/* roulang page: index */
:root {
            --bg-deep: #07111F;
            --bg-deep-2: #0B182C;
            --bg-deep-3: #081523;
            --surface-1: #0F1D32;
            --surface-2: #132640;
            --glass-bg: rgba(18, 32, 51, 0.72);
            --glass-border: rgba(148, 193, 255, 0.16);
            --accent-cyan: #33D6FF;
            --accent-electro: #3B8CFF;
            --accent-purple: #6D74FF;
            --accent-amber: #FFC764;
            --text-main: #EAF3FF;
            --text-secondary: #9EB3D1;
            --text-muted: #6C85A5;
            --success: #37D399;
            --warning: #FF9066;
            --info: #59A7FF;
            --radius-card: 20px;
            --radius-btn: 12px;
            --radius-img: 16px;
            --shadow-base: 0 12px 32px rgba(1, 8, 20, 0.42);
            --shadow-glow: 0 0 0 1px rgba(77, 166, 255, 0.08), 0 12px 40px rgba(0, 20, 55, 0.55);
            --shadow-cta: 0 0 32px rgba(51, 214, 255, 0.30);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --section-space: clamp(72px, 8vw, 112px);
            --nav-high: 72px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.85;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        img,
        svg {
            vertical-align: middle;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: all 0.2s ease;
        }
        a:hover {
            color: #80E7FF;
        }
        button,
        input {
            font-family: inherit;
        }
        strong,
        b {
            color: #fff;
            font-weight: 700;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: 0.01em;
        }
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .text-gradient {
            background: linear-gradient(92deg, var(--accent-cyan) 10%, var(--accent-purple) 90%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }
        .section-pad {
            padding-top: var(--section-space);
            padding-bottom: var(--section-space);
        }
        .bg-deep-2 {
            background: var(--bg-deep-2);
        }
        .bg-deep-3 {
            background: var(--bg-deep-3);
        }

        /* 顶部状态条 */
        .topstatus {
            background: #050B14;
            border-bottom: 1px solid rgba(148, 193, 255, 0.08);
            font-size: 13px;
            padding: 6px 0;
            color: var(--text-secondary);
        }
        .topstatus .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 32px;
        }
        .topstatus i {
            color: var(--success);
        }

        /* 导航 */
        .site-nav {
            position: sticky;
            top: 0;
            z-index: 1050;
            width: 100%;
            height: var(--nav-high);
            background: transparent;
            transition: background 0.35s ease, backdrop-filter 0.35s ease, box-shadow 0.35s ease;
        }
        .site-nav.nav-scrolled {
            background: rgba(6, 13, 24, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 8px 22px rgba(0, 0, 0, 0.3);
        }
        .navbar-shell {
            position: absolute;
            bottom: 0;
            left: 10%;
            width: 80%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-purple), transparent);
            opacity: 0.7;
            pointer-events: none;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-high);
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .brand-logo .badge-hot {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(255, 199, 100, 0.15);
            color: var(--accent-amber);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            border: 1px solid rgba(255, 199, 100, 0.3);
            letter-spacing: 0.03em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links .nav-item {
            position: relative;
        }
        .nav-links .nav-link-custom {
            display: block;
            padding: 10px 16px;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            text-decoration: none;
            transition: all 0.2s ease;
            position: relative;
            background: transparent;
            letter-spacing: 0.01em;
        }
        .nav-links .nav-link-custom:hover {
            color: #fff;
            background: rgba(51, 214, 255, 0.1);
        }
        .nav-links .nav-link-custom.active {
            color: #fff;
            background: rgba(51, 214, 255, 0.12);
            box-shadow: inset 0 0 0 1px rgba(51, 214, 255, 0.3);
        }
        .nav-links .nav-link-custom.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(51, 214, 255, 0.8);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-download-nav {
            background: linear-gradient(95deg, var(--accent-cyan), var(--accent-purple));
            color: #07111F;
            font-weight: 800;
            font-size: 14px;
            border: none;
            padding: 10px 22px;
            border-radius: 12px;
            box-shadow: 0 0 20px rgba(51, 214, 255, 0.2);
            transition: all 0.25s ease;
            letter-spacing: 0.04em;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn-download-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(51, 214, 255, 0.4);
            color: #07111F;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: 8px;
            width: 44px;
            height: 44px;
            font-size: 20px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            background: rgba(6, 13, 24, 0.97);
            backdrop-filter: blur(14px);
            padding: 16px 24px;
            border-top: 1px solid rgba(148, 193, 255, 0.1);
            border-bottom: 1px solid rgba(148, 193, 255, 0.1);
        }
        .mobile-menu a {
            display: block;
            padding: 10px 6px;
            color: var(--text-secondary);
            font-size: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .mobile-menu a.active {
            color: var(--accent-cyan);
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding: clamp(72px, 7vw, 110px) 0 90px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp'), radial-gradient(circle at 80% 20%, rgba(61, 91, 255, 0.25), transparent 40%);
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 10%, rgba(51, 214, 255, 0.15), transparent 30%), radial-gradient(circle at 15% 90%, rgba(109, 116, 255, 0.15), transparent 35%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            grid-template-columns: 1.08fr 0.92fr;
            display: grid;
            align-items: center;
            gap: clamp(40px, 6vw, 90px);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(51, 214, 255, 0.12);
            border: 1px solid rgba(51, 214, 255, 0.3);
            backdrop-filter: blur(6px);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            color: var(--accent-cyan);
            font-weight: 600;
            margin-bottom: 24px;
        }
        .hero-title {
            font-size: clamp(34px, 4.2vw, 54px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: 0.02em;
            color: #fff;
            margin-bottom: 20px;
        }
        .hero-sub {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 500px;
            margin-bottom: 36px;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 42px;
        }
        .btn-primary-custom {
            background: linear-gradient(92deg, var(--accent-cyan), var(--accent-purple));
            color: #07111F;
            font-weight: 800;
            font-size: 16px;
            padding: 14px 30px;
            border-radius: 12px;
            border: none;
            box-shadow: 0 0 32px rgba(51, 214, 255, 0.3);
            transition: all 0.25s ease;
            letter-spacing: 0.03em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            cursor: pointer;
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 48px rgba(51, 214, 255, 0.5);
            color: #07111F;
        }
        .btn-secondary-custom {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-main);
            font-weight: 600;
            font-size: 16px;
            padding: 14px 30px;
            border-radius: 12px;
            backdrop-filter: blur(10px);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.25s ease;
            text-decoration: none;
        }
        .btn-secondary-custom:hover {
            border-color: rgba(51, 214, 255, 0.4);
            color: #fff;
            background: rgba(18, 32, 51, 0.9);
        }
        .hero-stats {
            display: flex;
            gap: 36px;
            flex-wrap: wrap;
            padding-top: 6px;
        }
        .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stats .stat-num {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
        }
        .hero-stats .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .hero-visual {
            position: relative;
            z-index: 2;
        }
        .hero-panel-main {
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(148, 193, 255, 0.2);
            box-shadow: var(--shadow-glow);
            background: var(--glass-bg);
            backdrop-filter: blur(8px);
            position: relative;
        }
        .hero-panel-main img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4 / 3;
            display: block;
        }
        .hero-focus-bars {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 18px;
        }
        .hero-focus-bars .focus-item {
            background: rgba(18, 32, 51, 0.7);
            border: 1px solid rgba(148, 193, 255, 0.2);
            border-radius: 999px;
            padding: 8px 16px;
            font-size: 13px;
            backdrop-filter: blur(6px);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .focus-item i {
            color: var(--success);
        }

        /* 卡片通用 */
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(51, 214, 255, 0.35);
            box-shadow: var(--shadow-glow);
        }
        .icon-badge {
            width: 52px;
            height: 52px;
            min-width: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            background: linear-gradient(135deg, rgba(51, 214, 255, 0.15), rgba(109, 116, 255, 0.2));
            border: 1px solid rgba(51, 214, 255, 0.3);
            color: var(--accent-cyan);
        }

        /* 区块标题 */
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto clamp(44px, 5vw, 64px);
        }
        .section-head h2 {
            font-size: clamp(26px, 3vw, 40px);
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }
        .section-head p {
            color: var(--text-secondary);
            font-size: 16px;
        }

        /* 价值区域 */
        .value-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }
        .value-card-main {
            grid-column: span 5;
            border-radius: var(--radius-card);
            padding: 28px;
            position: relative;
            background: linear-gradient(135deg, rgba(51, 214, 255, 0.12), rgba(18, 32, 51, 0.75));
            border: 1px solid rgba(51, 214, 255, 0.2);
            overflow: hidden;
        }
        .value-card-wide {
            grid-column: span 7;
            border-radius: var(--radius-card);
            padding: 28px;
            background: var(--surface-1);
            border: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
        }
        .value-card {
            grid-column: span 4;
            border-radius: var(--radius-card);
            padding: 28px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
        }
        .value-card:hover {
            transform: translateY(-4px);
            border-color: rgba(51, 214, 255, 0.3);
        }
        .value-card-main h3 {
            font-size: 19px;
            font-weight: 800;
            margin: 20px 0 12px;
            color: #fff;
        }
        .value-card-wide h3 {
            font-size: 19px;
            font-weight: 800;
            margin: 18px 0 10px;
        }
        .value-card h3 {
            font-size: 18px;
            font-weight: 800;
            margin: 20px 0 10px;
        }
        .value-card-main p,
        .value-card-wide p,
        .value-card p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 0;
        }
        .mini-list {
            margin-top: 14px;
            list-style: none;
            padding: 0;
        }
        .mini-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 8px;
            font-size: 14px;
            color: var(--text-main);
        }
        .mini-list li i {
            color: var(--success);
            margin-top: 5px;
            font-size: 13px;
        }

        /* carousel */
        .showcase-section {
            position: relative;
            overflow: hidden;
        }
        .showcase-inner {
            display: grid;
            grid-template-columns: 0.5fr 1.5fr 0.5fr;
            gap: 32px;
            align-items: center;
        }
        .showcase-notes {
            list-style: none;
        }
        .showcase-notes li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .showcase-notes li:last-child {
            border-bottom: none;
        }
        .showcase-notes .step {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
            width: 40px;
            min-width: 40px;
            text-align: center;
        }
        .showcase-notes .note-text {
            font-size: 15px;
            color: var(--text-secondary);
        }
        .device-mock {
            background: rgba(15, 29, 50, 0.7);
            border-radius: 28px;
            padding: 12px;
            border: 1px solid rgba(148, 193, 255, 0.2);
            box-shadow: var(--shadow-glow);
            backdrop-filter: blur(8px);
        }
        .device-screen {
            border-radius: 20px;
            overflow: hidden;
            background: #07111F;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }
        .device-screen img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
        }
        .carousel-indicators-custom {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 14px;
        }
        .carousel-dot {
            width: 24px;
            height: 3px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 2px;
            display: block;
            transition: background 0.3s, width 0.3s;
            cursor: pointer;
            border: none;
        }
        .carousel-dot.active {
            background: var(--accent-cyan);
            width: 32px;
            box-shadow: 0 0 12px rgba(51, 214, 255, 0.6);
        }
        .carousel-arrow {
            background: rgba(18, 32, 51, 0.7);
            border: 1px solid rgba(148, 193, 255, 0.2);
            border-radius: 50%;
            width: 44px;
            height: 44px;
            color: #fff;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s ease;
            backdrop-filter: blur(6px);
        }
        .carousel-arrow:hover {
            background: rgba(51, 214, 255, 0.2);
            border-color: rgba(51, 214, 255, 0.5);
        }
        .carousel-caption-bar {
            background: rgba(8, 21, 35, 0.75);
            border: 1px solid rgba(148, 193, 255, 0.16);
            border-radius: 12px;
            padding: 10px 18px;
            font-size: 14px;
            text-align: center;
            margin: 14px 20px 4px;
            backdrop-filter: blur(8px);
            color: var(--text-main);
        }

        /* 环境/系统要求 */
        .syswrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .sys-intro h3 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .sys-intro p {
            color: var(--text-secondary);
            margin-bottom: 18px;
        }
        .sys-check-list {
            list-style: none;
            padding: 0;
        }
        .sys-check-list li {
            margin-bottom: 12px;
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }
        .sys-panel {
            background: rgba(15, 29, 50, 0.6);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(8px);
            border-radius: 20px;
            padding: 28px;
        }
        .sys-panel-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 22px;
        }
        .sys-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 16px;
            border-radius: 10px;
            margin-bottom: 6px;
            min-height: 44px;
            background: rgba(0, 0, 0, 0.15);
            border-left: 2px solid rgba(51, 214, 255, 0.25);
            gap: 20px;
            flex-wrap: wrap;
        }
        .sys-row .label {
            color: var(--text-secondary);
            font-size: 15px;
        }
        .sys-row .value {
            color: var(--accent-amber);
            font-weight: 700;
            font-size: 14px;
        }
        .sys-anchor {
            text-align: right;
            margin-top: 20px;
            font-size: 14px;
        }

        /* CMS 资讯区 */
        .cms-section {
            position: relative;
        }
        .cms-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 320px;
            background: radial-gradient(ellipse at 20% 0%, rgba(61, 140, 255, 0.1), transparent);
            pointer-events: none;
        }
        .cms-layout {
            display: grid;
            gap: 32px;
            position: relative;
        }
        .cms-layout-main .news-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 28px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .cms-layout-main .news-head h2 {
            font-size: 32px;
            font-weight: 800;
            margin: 0;
        }
        .news-item {
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            padding: 22px 26px;
            margin-bottom: 14px;
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
            position: relative;
        }
        .news-item:hover {
            transform: translateX(6px);
            border-color: rgba(51, 214, 255, 0.35);
            box-shadow: 0 0 0 1px rgba(77, 166, 255, 0.15), 0 8px 30px rgba(0, 0, 0, 0.3);
        }
        .news-item .news-meta {
            display: flex;
            gap: 10px;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .news-item .news-meta .news-cat {
            background: rgba(51, 214, 255, 0.15);
            color: var(--accent-cyan);
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
        }
        .news-item .news-link-arrow {
            color: var(--accent-cyan);
            font-size: 18px;
            opacity: 0;
            transform: translateX(-8px);
            transition: 0.3s;
        }
        .news-item:hover .news-link-arrow {
            opacity: 1;
            transform: translateX(0);
        }
        .cms-layout-side .side-panel {
            background: rgba(15, 29, 50, 0.6);
            border-radius: 18px;
            border: 1px solid rgba(148, 193, 255, 0.14);
            padding: 26px;
            margin-bottom: 16px;
        }
        .cms-side-cat {
            list-style: none;
        }
        .cms-side-cat li {
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .cms-side-cat li a {
            display: block;
            padding: 10px 0;
            color: var(--text-secondary);
            position: relative;
            padding-left: 12px;
            transition: all 0.2s;
        }
        .cms-side-cat li a::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 4px;
            background: var(--accent-cyan);
            opacity: 0;
            border-radius: 50%;
        }
        .cms-side-cat li a:hover {
            color: #fff;
            padding-left: 16px;
        }
        .cms-side-cat li a:hover::before {
            opacity: 1;
        }
        .cms-empty {
            text-align: center;
            padding: 40px 0;
            color: var(--text-secondary);
            border: 1px dashed rgba(148, 193, 255, 0.3);
            border-radius: var(--radius-card);
            background: rgba(8, 21, 35, 0.5);
        }
        .cms-empty i {
            font-size: 36px;
            margin-bottom: 12px;
            color: var(--text-muted);
        }

        /* 评价墙 */
        .review-wrap {
            display: grid;
            grid-template-columns: 0.38fr 0.62fr;
            gap: 32px;
        }
        .review-summary {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 36px;
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        .review-summary .score-num {
            font-size: 54px;
            font-weight: 800;
            color: var(--accent-amber);
            line-height: 1.15;
        }
        .review-summary .stars {
            color: var(--accent-amber);
            font-size: 16px;
            margin: 14px 0 8px;
        }
        .review-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .review-card {
            background: rgba(15, 29, 50, 0.55);
            border: 1px solid rgba(148, 193, 255, 0.12);
            border-radius: 16px;
            padding: 24px;
            transition: all 0.25s;
        }
        .review-card:nth-child(odd) {
            margin-top: 24px;
        }
        .review-card:hover {
            border-color: rgba(148, 193, 255, 0.4);
        }
        .review-head {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 14px;
        }
        .review-avatar {
            width: 44px;
            height: 44px;
            min-width: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-electro), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
        }
        .review-name {
            font-size: 15px;
            font-weight: 700;
            margin: 0;
        }
        .review-role {
            font-size: 13px;
            color: var(--text-muted);
        }
        .review-stars {
            color: var(--accent-amber);
            font-size: 13px;
            margin-bottom: 8px;
        }
        .review-text p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            margin-bottom: 12px;
            background: var(--glass-bg);
            backdrop-filter: blur(8px);
            border: 1px solid var(--glass-border);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color 0.2s;
        }
        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            width: 100%;
            background: transparent;
            border: none;
            text-align: left;
            transition: 0.3s;
        }
        .faq-item .faq-q:hover {
            color: var(--accent-cyan);
        }
        .faq-item.open {
            border-left: 3px solid var(--accent-cyan);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-item .faq-a p {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
        }

        /* CTA 下载 */
        .download-cta {
            background: radial-gradient(circle at 70% 0%, rgba(109, 116, 255, 0.25), transparent 50%), var(--surface-1);
            border-radius: 28px;
            border: 1px solid rgba(148, 193, 255, 0.2);
            padding: clamp(40px, 6vw, 70px);
            text-align: center;
            box-shadow: var(--shadow-base);
            position: relative;
            overflow: hidden;
        }
        .download-cta h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .download-cta .lead-cta {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .download-btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn-platform {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(148, 193, 255, 0.4);
            color: #fff;
            padding: 13px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 700;
            transition: all 0.25s ease;
            backdrop-filter: blur(6px);
            text-decoration: none;
        }
        .btn-platform i {
            font-size: 24px;
            color: var(--accent-cyan);
        }
        .btn-platform:hover {
            transform: translateY(-2px);
            background: rgba(255, 255, 255, 0.25);
            border-color: rgba(51, 214, 255, 0.7);
        }
        .btn-aux-download {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(15, 29, 50, 0.6);
            color: var(--text-secondary);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 12px 24px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            transition: 0.2s ease;
        }
        .btn-aux-download:hover {
            color: #fff;
            border-color: rgba(148, 193, 255, 0.4);
        }

        /* 页脚 */
        .site-footer {
            background: #040B15;
            border-top: 1px solid rgba(148, 193, 255, 0.08);
            padding-top: 56px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 38px;
            padding-bottom: 40px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 12px;
            line-height: 1.7;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-left: 12px;
        }
        .footer-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 3px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: 0.2s ease;
            display: inline-block;
        }
        .footer-links a:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 22px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            color: var(--text-muted);
            font-size: 13px;
        }
        .footer-legal {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* 图片公共样式 */
        .media-frame {
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(148, 193, 255, 0.12);
            position: relative;
        }
        .media-frame img {
            width: 100%;
            object-fit: cover;
            display: block;
        }

        /* 分区装饰线 */
        .divider-glow {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(51, 214, 255, 0.4), transparent);
            width: 70%;
            margin: 0 auto;
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .nav-links,
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu.show-mobile {
                display: block;
                position: fixed;
                top: var(--nav-high);
                left: 0;
                right: 0;
                z-index: 1040;
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: 48px;
            }
            .hero-sub {
                max-width: 100%;
            }
            .value-grid {
                grid-template-columns: 1fr 1fr;
            }
            .value-card-main,
            .value-card-wide,
            .value-card {
                grid-column: span 1;
            }
            .showcase-inner {
                grid-template-columns: 1fr;
            }
            .review-wrap {
                grid-template-columns: 1fr;
            }
            .review-summary {
                position: relative;
                top: 0;
            }
            .review-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .syswrap {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 767px) {
            :root {
                --nav-high: 64px;
            }
            .container-custom {
                padding: 0 16px;
            }
            .cms-layout {
                grid-template-columns: 1fr;
            }
            .review-list {
                grid-template-columns: 1fr;
            }
            .review-card:nth-child(odd) {
                margin-top: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .download-btn-group .btn-platform {
                width: 100%;
                justify-content: center;
            }
            .topstatus .container-custom {
                font-size: 12px;
            }
            .hero-btns {
                flex-direction: column;
            }
            .hero-btns a {
                width: 100%;
                justify-content: center;
            }
            .topstatus .topstatus-left {
                display: none;
            }
            .topstatus .topstatus-right {
                width: 100%;
                text-align: center;
                font-size: 12px;
            }
            .nav-cat-list {
                overflow-x: auto;
                white-space: nowrap;
                padding-bottom: 8px;
                -webkit-overflow-scrolling: touch;
            }
        }
        @media (min-width: 1400px) {
            .hero-title {
                font-size: 58px;
            }
        }

        /* 访问性 */
        :focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .nav-link-custom:focus-visible,
        .btn-download-nav:focus-visible {
            outline-offset: 4px;
        }
        .skip-link {
            position: absolute;
            left: 20px;
            top: -100px;
            background: #fff;
            color: #000;
            padding: 8px 16px;
            z-index: 10000;
            border-radius: 8px;
            transition: top 0.2s;
        }
        .skip-link:focus {
            top: 10px;
        }
        .btn-ghost-anchor {
            border: 1px solid rgba(255, 255, 255, 0.4);
            border-radius: 999px;
            padding: 0px 12px;
            display: inline-block;
            color: #fff;
            font-size: 13px;
            transition: 0.3s;
            line-height: 22px;
        }
        .text-secondary a {
            text-decoration: underline;
            text-underline-offset: 4px;
        }

/* roulang page: category1 */
:root {
            --bg-ink: #07111F;
            --bg-layer: #0B182C;
            --bg-deep: #081523;
            --surface-deep: #0F1D32;
            --surface-soft: #132640;
            --glass-bg: rgba(18, 32, 51, 0.72);
            --glass-border: rgba(148, 193, 255, 0.16);
            --accent-cyan: #33D6FF;
            --accent-blue: #3B8CFF;
            --accent-purple: #6D74FF;
            --accent-amber: #FFC764;
            --text-main: #EAF3FF;
            --text-secondary: #9EB3D1;
            --text-faint: #6C85A5;
            --success: #37D399;
            --warning: #FF9066;
            --info: #59A7FF;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-base: 0 12px 32px rgba(1, 8, 20, 0.42);
            --shadow-glow: 0 0 0 1px rgba(77, 166, 255, 0.08), 0 12px 40px rgba(0, 20, 55, 0.55);
            --shadow-cta: 0 0 32px rgba(51, 214, 255, 0.30);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --section-space: clamp(72px, 8vw, 112px);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 96px;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-main);
            background-color: var(--bg-ink);
            background-image: radial-gradient(circle at 12% 8%, rgba(37, 84, 140, 0.22), transparent 36%),
                radial-gradient(circle at 88% 16%, rgba(109, 116, 255, 0.14), transparent 32%);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color .2s ease, opacity .2s ease;
        }

        a:hover {
            color: #7CE7FF;
        }

        button,
        input {
            font-family: inherit;
        }

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            background: rgba(6, 13, 24, 0.68);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(148, 193, 255, 0.07);
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-nav.scrolled {
            background: rgba(6, 13, 24, 0.9);
            box-shadow: 0 8px 28px rgba(1, 8, 20, 0.3);
        }

        .site-nav .navbar-shell {
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 78%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(51, 214, 255, 0.6), rgba(109, 116, 255, 0.4), transparent);
            pointer-events: none;
        }

        .site-nav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 28px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-main);
            white-space: nowrap;
            line-height: 1.3;
        }

        .brand-logo:hover {
            color: #fff;
        }

        .badge-hot {
            display: inline-flex;
            align-items: center;
            margin-left: 10px;
            padding: 4px 12px;
            background: rgba(255, 199, 100, 0.12);
            border: 1px solid rgba(255, 199, 100, 0.28);
            color: var(--accent-amber);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
        }

        .nav-link-custom {
            position: relative;
            display: inline-block;
            padding: 9px 15px;
            font-size: 15px;
            line-height: 1.4;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 10px;
            transition: color .25s ease, background .25s ease;
        }

        .nav-link-custom::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
            box-shadow: 0 0 12px rgba(51, 214, 255, 0.5);
            opacity: 0;
            transform: scaleX(.5);
            transition: transform .28s ease, opacity .28s ease;
        }

        .nav-link-custom:hover {
            color: var(--text-main);
            background: rgba(51, 214, 255, 0.06);
        }

        .nav-link-custom:hover::after,
        .nav-link-custom.active::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .nav-link-custom.active {
            color: #fff;
            text-shadow: 0 0 12px rgba(51, 214, 255, 0.18);
        }

        .btn-download-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 20px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            color: #07111F;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            box-shadow: 0 0 22px rgba(51, 214, 255, 0.26);
            border: none;
            white-space: nowrap;
            letter-spacing: .04em;
            transition: transform .2s ease, box-shadow .25s ease, filter .25s ease;
        }

        .btn-download-nav:hover {
            transform: translateY(-2px);
            color: #07111F;
            box-shadow: 0 0 34px rgba(51, 214, 255, 0.42);
            filter: brightness(1.08);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: transparent;
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            color: var(--text-main);
            font-size: 20px;
            cursor: pointer;
        }

        .btn-primary,
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 26px;
            border: none;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 55%, var(--accent-purple) 100%);
            color: #07111F;
            font-size: 16px;
            font-weight: 700;
            letter-spacing: .05em;
            box-shadow: 0 0 22px rgba(51, 214, 255, 0.24), 0 12px 28px rgba(1, 8, 20, 0.3);
            transition: transform .22s ease, box-shadow .25s ease, filter .25s ease;
        }

        .btn-primary:hover,
        .btn-primary-custom:hover {
            color: #07111F;
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(51, 214, 255, 0.42);
            filter: brightness(1.06);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 0 24px;
            border-radius: 12px;
            background: rgba(18, 32, 51, 0.52);
            border: 1px solid rgba(148, 193, 255, 0.22);
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            transition: transform .22s ease, background .3s ease, border-color .3s ease;
        }

        .btn-ghost:hover {
            color: #fff;
            background: rgba(51, 214, 255, 0.09);
            border-color: rgba(51, 214, 255, 0.5);
            transform: translateY(-2px);
        }

        .page-main {
            padding-top: 72px;
        }

        .category-hero {
            position: relative;
            overflow: hidden;
            padding: clamp(64px, 8vw, 108px) 0 clamp(56px, 6vw, 84px);
            background: radial-gradient(circle at 18% 36%, rgba(51, 214, 255, 0.12), transparent 34%),
                radial-gradient(circle at 82% 24%, rgba(109, 116, 255, 0.14), transparent 30%);
        }

        .category-hero .bg-ring {
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            border: 1px solid rgba(51, 214, 255, 0.16);
            top: -90px;
            right: -110px;
            box-shadow: inset 0 0 90px rgba(51, 214, 255, 0.08);
            pointer-events: none;
            filter: blur(1px);
        }

        .category-hero .hero-bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            filter: blur(0.4px);
            z-index: 0;
        }

        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(7, 17, 31, 0.86) 0%, rgba(7, 17, 31, 0.62) 55%, rgba(11, 24, 44, 0.44) 100%);
            z-index: 1;
        }

        .category-hero .container-custom {
            position: relative;
            z-index: 2;
        }

        .hero-eyebrow {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--accent-cyan);
        }

        .hero-eyebrow::before {
            content: "";
            width: 22px;
            height: 2px;
            border-radius: 99px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
        }

        .category-hero h1 {
            font-size: clamp(30px, 4vw, 54px);
            font-weight: 800;
            line-height: 1.28;
            letter-spacing: .02em;
            margin: 0 0 18px;
            color: var(--text-main);
            max-width: 620px;
        }

        .category-hero .lead {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 34px;
        }

        .hero-safe {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            padding-top: 20px;
            border-top: 1px solid rgba(148, 193, 255, 0.13);
        }

        .hero-safe span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .hero-safe i {
            color: var(--accent-cyan);
        }

        .hero-note-card {
            position: relative;
            width: 100%;
            padding: 30px;
            border-radius: 20px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-base);
        }

        .hero-note-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 18px 0 8px;
            color: #fff;
        }

        .hero-note-card p {
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 16px;
        }

        .note-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .note-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 9px 0;
            font-size: 15px;
            color: var(--text-main);
            border-bottom: 1px dashed rgba(148, 193, 255, 0.12);
        }

        .note-list li:last-child {
            border-bottom: 0;
        }

        .note-list i {
            color: var(--accent-cyan);
            line-height: 24px;
            font-size: 14px;
        }

        .note-icon-box {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            display: grid;
            place-items: center;
            font-size: 22px;
            color: var(--accent-cyan);
            background: rgba(51, 214, 255, 0.1);
            border: 1px solid rgba(51, 214, 255, 0.2);
            margin-bottom: 14px;
        }

        .section-block {
            padding: var(--section-space) 0;
        }

        .section-block .section-heading {
            max-width: 840px;
            margin-bottom: 50px;
        }

        .section-eyebrow {
            display: inline-block;
            margin-bottom: 10px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: .08em;
            color: var(--accent-cyan);
        }

        .section-block h2,
        .section-block h3 {
            line-height: 1.35;
            margin: 0 0 14px;
        }

        .section-block h2 {
            font-size: clamp(26px, 3.4vw, 36px);
            font-weight: 800;
            letter-spacing: .02em;
        }

        .section-block h3 {
            font-size: 22px;
            font-weight: 700;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin: 0;
        }

        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-base);
            transition: transform .25s ease, border-color .3s ease, box-shadow .25s ease;
        }

        .glass-card:hover {
            transform: translateY(-3px);
            border-color: rgba(51, 214, 255, 0.28);
            box-shadow: var(--shadow-glow);
        }

        .feature-main-card {
            height: 100%;
        }

        .feature-icon-lg {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: grid;
            place-items: center;
            font-size: 24px;
            color: var(--accent-cyan);
            background: rgba(51, 214, 255, 0.12);
            border: 1px solid rgba(51, 214, 255, 0.25);
            margin-bottom: 22px;
        }

        .feature-grid-card {
            margin-bottom: 20px;
        }

        .feature-grid-card:last-child {
            margin-bottom: 0;
        }

        .feature-grid-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-main);
        }

        .feature-grid-card p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.8;
        }

        .feature-card {
            padding: 24px;
            border-radius: var(--radius-lg);
            background: rgba(15, 29, 50, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.12);
            height: 100%;
            transition: transform .22s ease, background .3s ease, border-color .3s ease;
        }

        .feature-card:hover {
            transform: translateY(-3px);
            background: rgba(19, 38, 64, 0.8);
            border-color: rgba(51, 214, 255, 0.22);
        }

        .feature-card .fc-head {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }

        .feature-card .fc-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: grid;
            place-items: center;
            color: var(--accent-purple);
            background: rgba(109, 116, 255, 0.12);
            border: 1px solid rgba(109, 116, 255, 0.16);
            font-size: 18px;
            flex-shrink: 0;
        }

        .feature-card .fc-cat {
            font-size: 13px;
            color: var(--text-faint);
            font-weight: 600;
            letter-spacing: .04em;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin: 0;
        }

        .feature-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 18px;
        }

        .feature-card .card-link {
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-cyan);
        }

        .card-thumb {
            border-radius: 16px;
            overflow: hidden;
            margin-bottom: 18px;
            aspect-ratio: 16 / 10;
            background: var(--bg-layer);
        }

        .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
            border: 1px solid rgba(148, 193, 255, 0.08);
        }

        .feature-card:hover .card-thumb img {
            transform: scale(1.03);
        }

        .background-split {
            background: var(--bg-deep);
            position: relative;
        }

        .background-split:before {
            content: "";
            position: absolute;
            width: 44%;
            height: 100%;
            top: 0;
            right: 0;
            background: radial-gradient(circle at 70% 30%, rgba(51, 214, 255, 0.09), transparent 55%);
            pointer-events: none;
        }

        .checklist-wrap {
            border-radius: 24px;
            background: linear-gradient(135deg, rgba(19, 38, 64, 0.74), rgba(11, 24, 44, 0.94));
            border: 1px solid rgba(148, 193, 255, 0.14);
            padding: clamp(24px, 4vw, 48px);
            box-shadow: var(--shadow-base);
        }

        .check-groups {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 16px 28px;
        }

        .check-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 17px 18px;
            border-radius: 16px;
            background: rgba(7, 17, 31, 0.47);
            border: 1px solid rgba(148, 193, 255, 0.11);
            transition: background .25s ease, border-color .25s ease;
        }

        .check-item:hover {
            background: rgba(51, 214, 255, 0.06);
            border-color: rgba(51, 214, 255, 0.2);
        }

        .check-item .ci-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            flex-shrink: 0;
            margin-top: 4px;
            display: grid;
            place-items: center;
            color: #07111F;
            background: var(--accent-cyan);
            font-size: 11px;
            box-shadow: 0 0 12px rgba(51, 214, 255, 0.34);
        }

        .check-item h4 {
            margin: 0 0 4px;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
        }

        .check-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.8;
        }

        .accent-icon-purple {
            color: var(--accent-purple) !important;
            background: rgba(109, 116, 255, 0.12) !important;
            border-color: rgba(109, 116, 255, 0.22) !important;
        }

        .amber-chip {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            background: rgba(255, 199, 100, 0.13);
            border: 1px solid rgba(255, 199, 100, 0.24);
            color: var(--accent-amber);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .shield-badges .shield-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(55, 211, 153, 0.1);
            border: 1px solid rgba(55, 211, 153, 0.2);
            color: var(--success);
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 13px;
        }

        .shield-note {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .faq-block {
            padding: var(--section-space) 0;
            background: var(--bg-deep);
        }

        .faq-accordion .accordion-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 16px !important;
            margin-bottom: 14px;
            overflow: hidden;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 8px 22px rgba(0, 8, 20, 0.2);
            transition: border-color .25s ease;
        }

        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-left: 3px solid var(--accent-cyan);
        }

        .faq-accordion .accordion-button {
            background: rgba(13, 27, 47, 0.16);
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            line-height: 1.6;
            letter-spacing: .01em;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(51, 214, 255, 0.12);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(51, 214, 255, 0.05);
            color: #fff;
        }

        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2333D6FF'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            width: 1em;
            height: 1em;
        }

        .faq-accordion .accordion-body {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.9;
            background: rgba(7, 17, 31, 0.35);
            padding: 8px 24px 24px;
            border-top: 0;
        }

        .faq-accordion .accordion-body p {
            margin: 0;
        }

        .cta-panel {
            position: relative;
            padding: var(--section-space) 0;
        }

        .download-panel {
            border-radius: 24px;
            overflow: hidden;
            background: radial-gradient(circle at 16% 30%, rgba(51, 214, 255, 0.15), transparent 44%),
                radial-gradient(circle at 88% 68%, rgba(109, 116, 255, 0.16), transparent 42%),
                rgba(15, 29, 50, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.18);
            padding: clamp(34px, 5vw, 64px);
            text-align: center;
            box-shadow: var(--shadow-glow);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .download-panel h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            margin-bottom: 14px;
            color: #fff;
        }

        .download-panel .download-desc {
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.9;
        }

        .download-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin: 26px 0 18px;
        }

        .download-panel .btn-primary {
            min-width: 180px;
        }

        .download-note {
            margin-top: 18px;
        }

        .download-note span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(55, 211, 153, 0.1);
            border: 1px solid rgba(55, 211, 153, 0.22);
            color: var(--success);
            font-size: 13px;
        }

        .site-footer {
            background: #050c18;
            padding: 64px 0 26px;
            border-top: 1px solid rgba(148, 193, 255, 0.08);
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(148, 193, 255, 0.1);
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
            max-width: 360px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 10px;
        }

        .footer-links a,
        .footer-links span {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color .2s ease, transform .2s ease;
            display: inline-block;
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
            transform: translateX(4px);
        }

        .footer-links .small {
            font-size: 13px;
            color: var(--text-faint);
            line-height: 1.7;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px 32px;
            padding-top: 28px;
            font-size: 13px;
            color: var(--text-faint);
        }

        .footer-legal {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .body-wrap {
            display: flex;
            min-height: 100vh;
            flex-direction: column;
        }

        .body-wrap .site-footer {
            margin-top: 0;
        }

        .page-main {
            flex: 1;
        }

        @media (min-width: 1200px) {
            .category-hero h1 {
                font-size: 46px;
            }
        }

        @media (max-width: 991.98px) {
            .site-nav .nav-inner {
                flex-wrap: wrap;
                min-height: 72px;
                padding: 12px 0;
            }

            .nav-toggle {
                display: inline-flex;
                order: 3;
            }

            .nav-cta {
                margin-left: auto;
                order: 2;
            }

            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                background: rgba(9, 19, 34, 0.96);
                border: 1px solid rgba(148, 193, 255, 0.12);
                border-radius: 16px;
                padding: 14px;
                margin-top: 6px;
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                order: 4;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-link-custom {
                padding: 12px 14px;
                font-size: 16px;
                border-radius: 10px;
            }

            .nav-link-custom::after {
                left: 14px;
                width: auto;
                right: 14px;
            }

            .nav-cta .btn-download-nav {
                height: 40px;
                padding: 0 14px;
                font-size: 14px;
            }

            .brand-logo {
                font-size: 18px;
            }

            .badge-hot {
                padding: 3px 9px;
                font-size: 12px;
                margin-left: 8px;
            }

            .page-main {
                padding-top: 66px;
            }
        }

        @media (max-width: 767.98px) {
            .container-custom {
                padding-left: 18px;
                padding-right: 18px;
            }

            .brand-logo {
                font-size: 17px;
            }

            .badge-hot {
                display: none;
            }

            .category-hero .hero-note-card {
                margin-top: 18px;
            }

            .feature-main-card {
                margin-bottom: 18px;
            }

            .check-groups {
                grid-template-columns: 1fr;
            }

            .download-panel {
                padding: 30px 20px;
            }

            .download-actions .btn-primary,
            .download-actions .btn-ghost {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 34px 22px;
            }

            .footer-grid div:first-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 519.98px) {
            .brand-logo {
                font-size: 15px;
                white-space: normal;
                line-height: 1.4;
            }

            .badge-hot {
                display: none;
            }

            .site-nav .nav-inner {
                gap: 12px;
            }

            .btn-download-nav {
                padding: 0 12px;
                font-size: 13px;
                height: 38px;
            }

            .nav-toggle {
                width: 38px;
                height: 38px;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                width: 100%;
            }

            .glass-card {
                padding: 22px;
            }

            .check-item {
                padding: 14px;
            }
        }

        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(148, 193, 255, 0.2), transparent);
            border: none;
        }

/* roulang page: article */
:root {
            --bg: #07111F;
            --bg-2: #0B182C;
            --bg-3: #081523;
            --surface: #0F1D32;
            --surface-2: #132640;
            --glass: rgba(18, 32, 51, 0.72);
            --glass-border: rgba(148, 193, 255, 0.16);
            --cyan: #33D6FF;
            --blue: #3B8CFF;
            --violet: #6D74FF;
            --amber: #FFC764;
            --text: #EAF3FF;
            --text-secondary: #9EB3D1;
            --text-muted: #6C85A5;
            --success: #37D399;
            --warning: #FF9066;
            --info: #59A7FF;
            --radius-card: 20px;
            --radius-btn: 12px;
            --radius-img: 16px;
            --shadow-basic: 0 12px 32px rgba(1, 8, 20, 0.42);
            --shadow-glow: 0 0 0 1px rgba(77, 166, 255, 0.08), 0 12px 40px rgba(0, 20, 55, 0.55);
            --shadow-cta: 0 0 32px rgba(51, 214, 255, 0.30);
            --ease: 0.25s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 84px;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--ease), opacity var(--ease), transform var(--ease), background var(--ease), border-color var(--ease), box-shadow var(--ease);
        }

        button,
        input,
        textarea {
            font-family: inherit;
        }

        ::selection {
            background: rgba(51, 214, 255, 0.26);
            color: #fff;
        }

        :focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 2px;
            border-radius: 6px;
        }

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 18px;
                padding-right: 18px;
            }
        }

        /* 全局导航 */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            width: 100%;
            z-index: 1090;
            background: rgba(6, 13, 24, 0.76);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(148, 193, 255, 0.14);
            box-shadow: 0 8px 30px rgba(0, 8, 22, 0.38);
        }

        .site-nav::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-70%);
            width: 80%;
            max-width: 620px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(51, 214, 255, 0.8), rgba(109, 116, 255, 0.7), transparent);
            pointer-events: none;
        }

        .navbar-shell {
            position: absolute;
            inset: 0;
            pointer-events: none;
            background:
                radial-gradient(ellipse at 14% 0%, rgba(255, 199, 100, 0.05), transparent 32%),
                radial-gradient(ellipse at 88% 0%, rgba(61, 140, 255, 0.08), transparent 42%);
            opacity: 0.92;
        }

        .nav-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 18px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text);
            white-space: nowrap;
            line-height: 1.2;
        }

        .brand-logo:hover {
            color: #fff;
        }

        .badge-hot {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            border-radius: 999px;
            background: rgba(255, 199, 100, 0.12);
            border: 1px solid rgba(255, 199, 100, 0.26);
            color: var(--amber);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 6px;
        }

        .nav-item {
            padding: 0;
        }

        .nav-link-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 9px 13px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            line-height: 1.4;
            border: 1px solid transparent;
            position: relative;
            transition: color var(--ease), background var(--ease), border-color var(--ease), box-shadow var(--ease);
        }

        .nav-link-custom:hover {
            color: #fff;
            background: rgba(51, 214, 255, 0.08);
            border-color: rgba(51, 214, 255, 0.16);
            transform: translateY(-1px);
        }

        .nav-link-custom.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(51, 214, 255, 0.18), rgba(109, 116, 255, 0.18));
            border-color: rgba(51, 214, 255, 0.24);
            box-shadow: 0 0 18px rgba(51, 214, 255, 0.18);
        }

        .nav-link-custom.active::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 34%;
            height: 2px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--cyan), var(--violet));
            box-shadow: 0 0 10px rgba(51, 214, 255, 0.6);
        }

        .nav-cta {
            display: flex;
            align-items: center;
        }

        .btn-download-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
            height: 44px;
            padding: 0 22px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--cyan), var(--blue), var(--violet));
            color: #06111F;
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0.06em;
            border: 0;
            white-space: nowrap;
            box-shadow: 0 0 24px rgba(51, 214, 255, 0.24);
            transition: transform var(--ease), box-shadow var(--ease), filter var(--ease);
        }

        .btn-download-nav:hover {
            color: #06111F;
            transform: translateY(-2px);
            box-shadow: 0 0 34px rgba(51, 214, 255, 0.45);
            filter: brightness(1.06);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: 1px solid var(--glass-border);
            background: rgba(18, 32, 51, 0.66);
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: background var(--ease), border-color var(--ease), transform var(--ease);
        }

        .nav-toggle:hover {
            background: rgba(51, 214, 255, 0.12);
            border-color: rgba(51, 214, 255, 0.4);
            transform: translateY(-1px);
        }

        @media (max-width: 1199.98px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 18px;
                right: 18px;
                z-index: 1090;
                display: block;
                padding: 14px;
                background: rgba(8, 18, 32, 0.94);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border: 1px solid var(--glass-border);
                border-radius: 18px;
                box-shadow: var(--shadow-basic);
                opacity: 0;
                transform: translateY(-10px);
                visibility: hidden;
                pointer-events: none;
                transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
            }

            .nav-links.open {
                opacity: 1;
                transform: translateY(0);
                visibility: visible;
                pointer-events: auto;
            }

            .nav-links .nav-item {
                width: 100%;
            }

            .nav-links .nav-link-custom {
                padding: 12px 16px;
                border-radius: 12px;
                font-size: 15px;
                justify-content: flex-start;
            }

            .nav-links .nav-link-custom.active::after {
                left: 18px;
                transform: none;
                width: 3px;
                height: 18px;
                top: 50%;
                bottom: auto;
                translate: 0 -50%;
                border-radius: 8px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-cta {
                margin-left: auto;
            }
        }

        @media (max-width: 768px) {
            .nav-inner {
                height: 64px;
                gap: 12px;
            }

            .nav-links {
                top: 56px;
            }

            .brand-logo {
                font-size: 16px;
                gap: 7px;
                white-space: normal;
                max-width: 170px;
                line-height: 1.15;
            }

            .badge-hot {
                padding: 3px 8px;
                font-size: 11px;
            }

            .badge-hot i {
                display: none;
            }

            .nav-cta .btn-download-nav {
                width: 44px;
                height: 44px;
                padding: 0;
                justify-content: center;
                font-size: 0;
                border-radius: 50%;
            }

            .nav-cta .btn-download-nav i {
                font-size: 17px;
                margin: 0;
            }
        }

        @media (max-width: 420px) {
            .badge-hot {
                display: none;
            }

            .nav-cta .btn-download-nav {
                width: 40px;
                height: 40px;
            }
        }

        /* 文章首屏 */
        .article-hero {
            position: relative;
            padding: 144px 0 42px;
            overflow: hidden;
            background: var(--bg-2);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center center;
            opacity: 0.18;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 18% 20%, rgba(51, 214, 255, 0.12), transparent 38%),
                radial-gradient(ellipse at 82% 8%, rgba(109, 116, 255, 0.15), transparent 42%),
                linear-gradient(180deg, rgba(7, 17, 31, 0.62), var(--bg) 100%);
            pointer-events: none;
        }

        .article-hero .container-custom {
            position: relative;
            z-index: 2;
        }

        .inner-breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 5px;
            margin: 0 0 26px;
            padding: 0;
            list-style: none;
            font-size: 14px;
            color: var(--text-muted);
        }

        .inner-breadcrumb li {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .inner-breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--ease);
        }

        .inner-breadcrumb a:hover {
            color: var(--cyan);
        }

        .inner-breadcrumb li+li::before {
            content: "/";
            color: rgba(108, 133, 165, 0.65);
            margin: 0 5px;
        }

        .inner-breadcrumb .active {
            color: var(--text);
            max-width: 340px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-hero-head {
            max-width: 820px;
        }

        .tag-info {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 14px;
            margin-bottom: 16px;
            border-radius: 999px;
            background: rgba(51, 214, 255, 0.09);
            border: 1px solid rgba(51, 214, 255, 0.22);
            color: var(--cyan);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .article-hero-head h1 {
            margin: 0;
            font-size: clamp(26px, 4vw, 40px);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.02em;
            color: var(--text);
            word-break: break-word;
        }

        /* 文章正文 */
        .article-main {
            padding: 0 0 72px;
        }

        .article-reader {
            max-width: 860px;
            margin: -26px auto 0;
            position: relative;
            z-index: 5;
        }

        .article-panel {
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-glow);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            padding: clamp(28px, 5vw, 52px);
        }

        .entry-header {
            padding-bottom: 30px;
            margin-bottom: 32px;
            border-bottom: 1px solid rgba(148, 193, 255, 0.14);
        }

        .entry-header .entry-title {
            margin: 0 0 16px;
            font-size: clamp(24px, 3.5vw, 34px);
            font-weight: 800;
            line-height: 1.4;
            letter-spacing: 0.01em;
            color: var(--text);
            word-break: break-word;
        }

        .entry-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 22px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .meta-item i {
            color: var(--cyan);
            width: 16px;
            text-align: center;
        }

        .meta-item a {
            color: var(--text-secondary);
        }

        .meta-item a:hover {
            color: var(--cyan);
        }

        /* 正文排版 */
        .article-content {
            color: var(--text);
            font-size: 16px;
            line-height: 1.9;
            word-break: break-word;
            min-height: 220px;
        }

        .article-content p {
            margin: 0 0 1.6rem;
        }

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-img);
            box-shadow: var(--shadow-basic);
            margin: 28px 0 12px;
            border: 1px solid rgba(148, 193, 255, 0.12);
        }

        .article-content img+em,
        .article-content figcaption {
            display: block;
            text-align: center;
            font-style: normal;
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 24px;
        }

        .article-content h2 {
            margin: 2.2em 0 0.95em;
            font-size: 24px;
            font-weight: 800;
            line-height: 1.4;
            color: #fff;
            letter-spacing: 0.01em;
            padding-left: 14px;
            border-left: 3px solid var(--cyan);
            box-shadow: -8px 0 24px rgba(51, 214, 255, 0.04);
        }

        .article-content h3 {
            margin: 1.8em 0 0.8em;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.6rem;
            padding-left: 1.4rem;
        }

        .article-content li {
            margin-bottom: 8px;
            line-height: 1.85;
        }

        .article-content li::marker {
            color: var(--cyan);
        }

        .article-content blockquote {
            margin: 30px 0;
            padding: 20px 24px;
            background: rgba(51, 214, 255, 0.05);
            border: 1px solid rgba(51, 214, 255, 0.14);
            border-left: 4px solid var(--cyan);
            border-radius: 12px;
            color: var(--text-secondary);
            font-size: 15px;
        }

        .article-content a {
            color: var(--cyan);
            border-bottom: 1px solid rgba(51, 214, 255, 0.4);
        }

        .article-content a:hover {
            color: #fff;
            border-bottom-color: #fff;
        }

        .article-content table {
            width: 100%;
            margin: 28px 0;
            border-collapse: separate;
            border-spacing: 0;
            background: rgba(11, 27, 48, 0.56);
            border-radius: 14px;
            overflow: hidden;
            border: 1px solid rgba(148, 193, 255, 0.14);
        }

        .article-content th,
        .article-content td {
            padding: 14px 16px;
            border-bottom: 1px solid rgba(148, 193, 255, 0.1);
            font-size: 15px;
        }

        .article-content th {
            background: rgba(51, 214, 255, 0.06);
            color: #fff;
            font-weight: 700;
        }

        .article-content tr:last-child td {
            border-bottom: 0;
        }

        /* 空状态 */
        .article-empty {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 14px;
            width: 100%;
            min-height: 380px;
            padding: 40px 20px;
            text-align: center;
            border-radius: 16px;
            background: rgba(15, 29, 50, 0.5);
            border: 1px dashed rgba(148, 193, 255, 0.2);
            color: var(--text-muted);
        }

        .article-empty i {
            font-size: 42px;
            color: var(--text-muted);
            opacity: 0.6;
        }

        .article-empty .empty-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
        }

        .article-empty a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 8px;
            color: var(--cyan);
            border: 1px solid rgba(51, 214, 255, 0.24);
            background: rgba(51, 214, 255, 0.06);
            padding: 10px 20px;
            border-radius: 999px;
            font-weight: 600;
            transition: all var(--ease);
        }

        .article-empty a:hover {
            background: rgba(51, 214, 255, 0.14);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 20px rgba(51, 214, 255, 0.18);
        }

        /* 扩展阅读 */
        .related-section {
            background: var(--bg-3);
            padding: clamp(68px, 8vw, 96px) 0 62px;
            border-top: 1px solid rgba(148, 193, 255, 0.08);
            border-bottom: 1px solid rgba(148, 193, 255, 0.08);
        }

        .section-heading {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 34px;
        }

        .eyebrow {
            display: inline-block;
            margin-bottom: 10px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.12em;
            color: var(--cyan);
            text-transform: uppercase;
        }

        .section-heading h2 {
            margin: 0;
            font-size: clamp(25px, 3vw, 32px);
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.02em;
        }

        .section-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 15px;
            padding-bottom: 6px;
            border-bottom: 1px solid rgba(51, 214, 255, 0.3);
            transition: all var(--ease);
        }

        .section-more:hover {
            color: var(--cyan);
            border-bottom-color: var(--cyan);
            transform: translateY(-2px);
        }

        .related-card {
            height: calc(100% - 24px);
            margin-bottom: 24px;
            background: rgba(15, 29, 50, 0.6);
            border: 1px solid rgba(148, 193, 255, 0.14);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-basic);
            transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
        }

        .related-card:hover {
            transform: translateY(-5px);
            border-color: rgba(51, 214, 255, 0.32);
            box-shadow: 0 0 0 1px rgba(77, 166, 255, 0.1), 0 18px 44px rgba(0, 20, 55, 0.6);
        }

        .related-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #0B182C;
        }

        .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .related-card:hover .related-img img {
            transform: scale(1.04);
        }

        .related-body {
            padding: 24px 22px 20px;
        }

        .related-cat {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            color: var(--cyan);
            background: rgba(51, 214, 255, 0.08);
            border: 1px solid rgba(51, 214, 255, 0.15);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .related-body h3 {
            margin: 0 0 12px;
            font-size: 18px;
            font-weight: 700;
            line-height: 1.55;
            color: var(--text);
        }

        .related-body p {
            margin: 0 0 16px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-link-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .card-link-more i {
            transition: transform var(--ease);
        }

        .related-card:hover .card-link-more {
            color: var(--cyan);
        }

        .related-card:hover .card-link-more i {
            transform: translateX(5px);
        }

        /* 文章操作条与小型下载锚点 */
        .post-nav-area {
            background: var(--bg);
            padding: clamp(60px, 7vw, 86px) 0 30px;
        }

        .post-action-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            background: var(--glass);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 26px 28px;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-basic);
        }

        .post-action-bar p {
            margin: 0;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            max-width: 580px;
        }

        .action-buttons {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn-back-custom {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            height: 46px;
            padding: 0 20px;
            border-radius: 999px;
            border: 1px solid rgba(148, 193, 255, 0.24);
            background: rgba(51, 214, 255, 0.08);
            color: var(--text);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--ease);
        }

        .btn-back-custom:hover {
            background: rgba(51, 214, 255, 0.15);
            border-color: rgba(51, 214, 255, 0.5);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 22px rgba(51, 214, 255, 0.18);
        }

        .btn-back-custom--primary {
            background: linear-gradient(135deg, var(--cyan), var(--violet));
            border: 0;
            color: #06111F;
            font-weight: 800;
            box-shadow: 0 0 24px rgba(51, 214, 255, 0.22);
        }

        .btn-back-custom--primary:hover {
            background: linear-gradient(135deg, #55e5ff, #7c81ff);
            color: #06111F;
            box-shadow: 0 0 32px rgba(51, 214, 255, 0.35);
        }

        .inline-download-box {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-top: 24px;
            padding: 18px 22px;
            background: linear-gradient(135deg, rgba(51, 214, 255, 0.08), rgba(109, 116, 255, 0.08));
            border: 1px solid rgba(51, 214, 255, 0.16);
            border-radius: 18px;
        }

        .inline-download-box span {
            color: var(--text-secondary);
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .inline-download-box span i {
            color: var(--amber);
        }

        .inline-download-box a {
            color: #fff;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .inline-download-box a:hover {
            color: var(--cyan);
            transform: translateX(3px);
        }

        /* 页脚 */
        .site-footer {
            background: #060D18;
            border-top: 1px solid rgba(148, 193, 255, 0.1);
            padding: 60px 0 0;
            position: relative;
            z-index: 4;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .footer-desc {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            max-width: 330px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.05em;
        }

        .small {
            font-size: 14px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 15px;
            transition: all var(--ease);
        }

        .footer-links a:hover {
            color: var(--cyan);
            transform: translateX(4px);
        }

        .footer-more {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(148, 193, 255, 0.08);
            padding: 18px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--text-muted);
            font-size: 13px;
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
        }

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                padding-bottom: 22px;
            }

            .article-panel {
                padding: 24px 18px;
                border-radius: 16px;
            }
        }

        /* 响应细节 */
        @media (max-width: 991.98px) {
            .post-action-bar {
                flex-direction: column;
                align-items: flex-start;
            }

            .action-buttons {
                width: 100%;
            }

            .action-buttons .btn-back-custom {
                flex: 1;
                justify-content: center;
            }

            .section-heading {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 767.98px) {
            .article-hero {
                padding-top: 116px;
            }

            .article-hero-head h1 {
                font-size: 26px;
            }

            .entry-meta {
                gap: 8px 16px;
                font-size: 13px;
            }

            .article-content {
                font-size: 15.5px;
            }

            .inline-download-box {
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #07111F;
            --bg-section: #0B182C;
            --bg-soft: #081523;
            --surface: #0F1D32;
            --surface-deep: #132640;
            --glass-bg: rgba(18, 32, 51, 0.72);
            --glass-strong: rgba(10, 22, 38, 0.84);
            --glass-border: rgba(148, 193, 255, 0.16);
            --accent-cyan: #33D6FF;
            --accent-blue: #3B8CFF;
            --accent-purple: #6D74FF;
            --accent-amber: #FFC764;
            --text-main: #EAF3FF;
            --text-sub: #9EB3D1;
            --text-mute: #6C85A5;
            --success: #37D399;
            --danger: #FF9066;
            --info: #59A7FF;
            --radius-card: 20px;
            --radius-btn: 12px;
            --radius-img: 16px;
            --shadow-base: 0 12px 32px rgba(1, 8, 20, 0.42);
            --shadow-glow: 0 0 0 1px rgba(77, 166, 255, 0.08), 0 12px 40px rgba(0, 20, 55, 0.55);
            --shadow-cta: 0 0 32px rgba(51, 214, 255, 0.30);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --section-space: clamp(72px, 8vw, 112px);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 88px;
        }

        body {
            margin: 0;
            background: var(--bg-deep);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body.modal-open,
        body.no-scroll {
            overflow: hidden;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color .25s ease, opacity .25s ease, transform .25s ease;
        }

        a:hover {
            color: #8DE7FF;
        }

        ul,
        ol {
            padding-left: 0;
            margin: 0;
            list-style: none;
        }

        button,
        input {
            font-family: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            font-weight: 600;
            line-height: 1.35;
            letter-spacing: 0.02em;
            color: #FAFCFF;
        }

        h1 {
            font-size: clamp(30px, 4vw, 54px);
            line-height: 1.2;
        }

        h2 {
            font-size: clamp(26px, 3vw, 36px);
            letter-spacing: 0.02em;
        }

        h3 {
            font-size: 18px;
        }

        p {
            margin: 0 0 16px;
        }

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-block {
            padding: var(--section-space) 0;
            position: relative;
        }

        .section-head {
            margin-bottom: 44px;
        }

        .section-title {
            margin-bottom: 12px;
        }

        .section-desc {
            color: var(--text-sub);
            max-width: 760px;
            font-size: 16px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border: 1px solid rgba(51, 214, 255, 0.25);
            background: rgba(51, 214, 255, 0.08);
            color: var(--accent-cyan);
            border-radius: 999px;
            font-size: 13px;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .glass-panel {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow-base);
        }

        .text-sub {
            color: var(--text-sub);
        }

        .text-mute {
            color: var(--text-mute);
        }

        .accent-amber {
            color: var(--accent-amber);
        }

        .btn-main,
        .btn-ghost,
        .btn-download-nav,
        .btn-download-lg,
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            letter-spacing: 0.04em;
            line-height: 1;
            transition: transform .28s ease, box-shadow .28s ease, background .28s ease, border-color .28s ease, color .28s ease;
            border: 1px solid transparent;
            text-align: center;
        }

        .btn-main:hover,
        .btn-ghost:hover,
        .btn-download-lg:hover,
        .btn-outline-light:hover {
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-main:focus,
        .btn-ghost:focus,
        .btn-download-nav:focus,
        .btn-download-lg:focus,
        .btn-outline-light:focus {
            outline: 3px solid rgba(51, 214, 255, 0.35);
            outline-offset: 2px;
        }

        .btn-main {
            background: linear-gradient(135deg, #33D6FF, #3B8CFF 52%, #6D74FF);
            color: #08121F;
            min-height: 50px;
            padding: 0 26px;
            font-size: 15px;
            box-shadow: 0 0 28px rgba(51, 214, 255, 0.2), 0 8px 24px rgba(0, 20, 55, 0.35);
        }

        .btn-main:hover {
            color: #07111F;
            box-shadow: 0 0 42px rgba(51, 214, 255, 0.38);
        }

        .btn-ghost {
            background: rgba(18, 32, 51, 0.55);
            border-color: rgba(148, 193, 255, 0.30);
            color: var(--text-main);
            min-height: 50px;
            padding: 0 24px;
            font-size: 15px;
            backdrop-filter: blur(8px);
        }

        .btn-ghost:hover {
            background: rgba(51, 214, 255, 0.12);
            border-color: rgba(51, 214, 255, 0.55);
        }

        .btn-download-nav {
            background: linear-gradient(135deg, #33D6FF, #3B8CFF 55%, #6D74FF);
            color: #08121F;
            min-height: 42px;
            padding: 0 20px;
            font-size: 14px;
            box-shadow: 0 0 22px rgba(51, 214, 255, 0.22);
        }

        .btn-download-nav:hover {
            color: #07111F;
            box-shadow: 0 0 32px rgba(51, 214, 255, 0.36);
        }

        .btn-download-lg {
            background: linear-gradient(135deg, #33D6FF, #3B8CFF 55%, #6D74FF);
            color: #08121F;
            min-height: 54px;
            padding: 0 32px;
            font-size: 16px;
            box-shadow: var(--shadow-cta);
        }

        .btn-download-lg:hover {
            color: #07111F;
            box-shadow: 0 0 44px rgba(51, 214, 255, 0.5);
        }

        .btn-outline-light {
            background: transparent;
            border-color: rgba(148, 193, 255, 0.4);
            color: var(--text-main);
            min-height: 54px;
            padding: 0 26px;
            font-size: 15px;
        }

        .btn-outline-light:hover {
            border-color: rgba(51, 214, 255, 0.7);
            background: rgba(51, 214, 255, 0.1);
        }

        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1200;
            padding: 10px 0;
            background: rgba(6, 13, 24, 0.68);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: background .35s ease, box-shadow .35s ease, border-color .35s ease;
        }

        .site-nav.scrolled {
            background: rgba(6, 13, 24, 0.88);
            border-bottom-color: rgba(148, 193, 255, 0.12);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
        }

        .navbar-shell {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(51, 214, 255, 0.4) 30%, rgba(109, 116, 255, 0.5) 70%, transparent);
            pointer-events: none;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            position: relative;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #fff;
            font-weight: 700;
            font-size: 19px;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: var(--accent-cyan);
        }

        .badge-hot {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(255, 199, 100, 0.14);
            border: 1px solid rgba(255, 199, 100, 0.3);
            color: var(--accent-amber);
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            line-height: 1.5;
            font-weight: 500;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
        }

        .nav-link-custom {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            color: var(--text-sub);
            font-size: 15px;
            border-radius: 10px;
            position: relative;
            font-weight: 500;
            letter-spacing: 0.01em;
            transition: color .25s ease, background .25s ease;
        }

        .nav-link-custom:hover {
            color: #fff;
            background: rgba(51, 214, 255, 0.08);
        }

        .nav-link-custom.active {
            color: #FFFFFF;
            background: linear-gradient(135deg, rgba(51, 214, 255, 0.18), rgba(109, 116, 255, 0.12));
            box-shadow: inset 0 0 0 1px rgba(51, 214, 255, 0.28);
        }

        .nav-link-custom.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue), var(--accent-purple));
            box-shadow: 0 0 10px rgba(51, 214, 255, 0.6);
        }

        .nav-cta {
            display: flex;
            align-items: center;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: rgba(51, 214, 255, 0.08);
            border: 1px solid rgba(148, 193, 255, 0.22);
            color: var(--text-main);
            border-radius: 12px;
            font-size: 18px;
            cursor: pointer;
        }

        .page-hero {
            position: relative;
            background: #07111F;
            padding: clamp(120px, 12vw, 168px) 0 72px;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(circle at 18% 26%, rgba(51, 214, 255, 0.12), transparent 34%),
                radial-gradient(circle at 76% 36%, rgba(109, 116, 255, 0.18), transparent 36%),
                radial-gradient(circle at 92% 84%, rgba(59, 140, 255, 0.10), transparent 32%);
            pointer-events: none;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            top: 0;
            bottom: 0;
            background-image: linear-gradient(rgba(148, 193, 255, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(148, 193, 255, 0.025) 1px, transparent 1px);
            background-size: 62px 62px;
            opacity: 0.55;
            pointer-events: none;
        }

        .page-hero .container-custom {
            position: relative;
            z-index: 3;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            align-items: center;
            gap: 52px;
        }

        .hero-copy {
            max-width: 660px;
        }

        .hero-sub {
            color: var(--text-sub);
            font-size: 18px;
            line-height: 1.85;
            max-width: 540px;
            margin: 18px 0 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 28px;
        }

        .hero-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            margin-top: 24px;
            color: var(--text-mute);
            font-size: 14px;
        }

        .hero-pills span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-pills i {
            color: var(--success);
        }

        .hero-visual {
            position: relative;
            min-height: 360px;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(148, 193, 255, 0.2);
            box-shadow: var(--shadow-glow);
            background-color: #0B182C;
            background-size: cover;
            background-position: center;
        }

        .hero-visual::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 17, 31, 0.20) 0%, rgba(7, 17, 31, 0.7) 70%, #07111F 100%);
        }

        .hero-visual-content {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            padding: 28px;
            z-index: 2;
        }

        .visual-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(51, 214, 255, 0.14);
            border: 1px solid rgba(51, 214, 255, 0.35);
            border-radius: 999px;
            padding: 5px 14px;
            color: var(--accent-cyan);
            font-size: 13px;
            margin-bottom: 14px;
        }

        .hero-visual h3 {
            color: #fff;
            font-size: 22px;
            margin-bottom: 8px;
        }

        .hero-visual p {
            color: var(--text-sub);
            font-size: 14px;
            margin-bottom: 0;
        }

        .feature-section {
            background: linear-gradient(180deg, #07111F 0%, #0B182C 100%);
        }

        .feature-grid2 {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 24px;
            margin-bottom: 24px;
        }

        .feature-card-large {
            position: relative;
            overflow: hidden;
            background: rgba(18, 32, 51, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.13);
            border-radius: 20px;
            padding: 30px;
            min-height: 320px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            background-size: cover;
            background-position: center;
        }

        .feature-card-large::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 20%, rgba(7, 17, 31, 0.82) 100%);
            border-radius: 20px;
        }

        .feature-card-large .feature-body {
            position: relative;
            z-index: 2;
            color: #fff;
        }

        .feature-card-large .feature-kicker {
            font-size: 12px;
            color: var(--accent-cyan);
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .feature-card-large h3 {
            color: #fff;
            font-size: 24px;
            margin-bottom: 10px;
        }

        .feature-card-large p {
            color: rgba(234, 243, 255, 0.75);
            font-size: 14px;
            margin: 0;
        }

        .feature-card-info {
            background: rgba(18, 32, 51, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.13);
            border-radius: 20px;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .feature-card-info h3 {
            font-size: 22px;
            margin-bottom: 12px;
        }

        .feature-card-info p {
            color: var(--text-sub);
        }

        .check-list {
            margin-top: 8px;
        }

        .check-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 10px 0;
            border-bottom: 1px solid rgba(148, 193, 255, 0.08);
            color: var(--text-sub);
        }

        .check-list li:last-child {
            border-bottom: none;
        }

        .check-list li i {
            color: var(--accent-cyan);
            margin-top: 5px;
            font-size: 13px;
        }

        .feature-grid3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-mini {
            background: rgba(15, 29, 50, 0.68);
            border: 1px solid rgba(148, 193, 255, 0.10);
            border-radius: 18px;
            padding: 26px;
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }

        .feature-mini:hover {
            transform: translateY(-4px);
            border-color: rgba(51, 214, 255, 0.35);
            box-shadow: 0 16px 30px rgba(0, 20, 55, 0.3);
        }

        .feature-mini-icon {
            width: 46px;
            height: 46px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(51, 214, 255, 0.18), rgba(109, 116, 255, 0.15));
            border: 1px solid rgba(51, 214, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 19px;
            margin-bottom: 18px;
        }

        .feature-mini h4 {
            font-size: 17px;
            margin-bottom: 10px;
        }

        .feature-mini p {
            color: var(--text-sub);
            font-size: 14px;
            margin: 0;
            line-height: 1.8;
        }

        .client-section {
            background: #081523;
            position: relative;
        }

        .client-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .client-card {
            background: rgba(18, 32, 51, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.13);
            border-radius: 20px;
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }

        .client-card:hover {
            transform: translateY(-6px);
            border-color: rgba(51, 214, 255, 0.35);
            box-shadow: var(--shadow-glow);
        }

        .client-card-media {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #132640;
        }

        .client-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .client-card:hover .client-card-media img {
            transform: scale(1.03);
        }

        .tag-type {
            position: absolute;
            left: 16px;
            top: 16px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(7, 17, 31, 0.72);
            border: 1px solid rgba(51, 214, 255, 0.35);
            color: var(--accent-cyan);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 12px;
            line-height: 1.6;
            backdrop-filter: blur(6px);
        }

        .tag-recommend {
            position: absolute;
            right: 16px;
            top: 16px;
            background: rgba(255, 199, 100, 0.16);
            border: 1px solid rgba(255, 199, 100, 0.36);
            color: var(--accent-amber);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .client-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .client-card-body h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }

        .client-card-body p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .client-card-list {
            margin-top: auto;
            border-top: 1px solid rgba(148, 193, 255, 0.1);
            padding-top: 14px;
        }

        .client-card-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: var(--text-sub);
            font-size: 13px;
            padding: 4px 0;
        }

        .client-card-list li i {
            color: var(--success);
            margin-top: 5px;
            font-size: 12px;
        }

        .steps-section {
            background: linear-gradient(180deg, #081523, #07111F);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 28px;
        }

        .step-item {
            position: relative;
            background: rgba(15, 29, 50, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.12);
            border-radius: 20px;
            padding: 26px 22px 24px;
            transition: transform .3s ease, border-color .3s ease;
        }

        .step-item:hover {
            transform: translateY(-5px);
            border-color: rgba(51, 214, 255, 0.4);
        }

        .step-num {
            display: inline-flex;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(51, 214, 255, 0.2), rgba(109, 116, 255, 0.18));
            border: 1px solid rgba(51, 214, 255, 0.3);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 17px;
            margin-bottom: 16px;
        }

        .step-item h3 {
            font-size: 17px;
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.8;
        }

        .faq-section {
            background: #0B182C;
        }

        .accordion-list {
            max-width: 940px;
            margin: 0 auto;
        }

        .accordion-item {
            background: rgba(18, 32, 51, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.13);
            border-radius: 18px;
            overflow: hidden;
            margin-bottom: 16px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-base);
        }

        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-left: 3px solid var(--accent-cyan);
        }

        .accordion-button {
            background: transparent;
            color: #EAF3FF;
            font-size: 16px;
            font-weight: 600;
            padding: 20px 22px;
            box-shadow: none;
            border: none;
            line-height: 1.6;
        }

        .accordion-button:not(.collapsed) {
            color: var(--accent-cyan);
            background: rgba(51, 214, 255, 0.05);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(51, 214, 255, 0.16);
        }

        .accordion-button::after {
            background-image: none;
            content: "\2b";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--accent-cyan);
            transform: none;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background-color: rgba(51, 214, 255, 0.12);
            font-size: 13px;
            transition: transform .3s ease;
        }

        .accordion-button:not(.collapsed)::after {
            content: "\f068";
            transform: none;
            color: #08121F;
            background-color: var(--accent-cyan);
        }

        .accordion-body {
            padding: 4px 22px 24px;
            color: var(--text-sub);
            line-height: 1.85;
            border-top: 1px solid rgba(148, 193, 255, 0.08);
        }

        .cta-download {
            position: relative;
            padding: var(--section-space) 0;
            background: #07111F;
            overflow: hidden;
        }

        .cta-download::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(circle at 20% 30%, rgba(51, 214, 255, 0.14), transparent 36%),
                radial-gradient(circle at 70% 80%, rgba(109, 116, 255, 0.12), transparent 32%);
            pointer-events: none;
        }

        .download-panel {
            position: relative;
            z-index: 2;
            background: rgba(18, 32, 51, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.18);
            border-radius: 26px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-glow);
            padding: clamp(32px, 6vw, 64px);
            text-align: center;
        }

        .download-panel h2 {
            margin-bottom: 16px;
        }

        .download-panel p {
            color: var(--text-sub);
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
            margin-bottom: 28px;
        }

        .download-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 18px;
        }

        .download-hint {
            margin-top: 20px;
            font-size: 13px;
            color: var(--text-mute);
        }

        .site-footer {
            background: #06101C;
            border-top: 1px solid rgba(148, 193, 255, 0.08);
            padding: 52px 0 0;
            color: var(--text-sub);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 36px;
            padding-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
            color: var(--text-sub);
            margin-bottom: 14px;
        }

        .footer-title {
            color: #F0F6FF;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(148, 193, 255, 0.08);
            padding: 18px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--text-mute);
        }

        .footer-bottom a {
            color: var(--text-mute);
        }

        .footer-legal {
            display: inline-flex;
            align-items: center;
            gap: 18px;
        }

        @media (max-width: 991.98px) {
            .nav-inner {
                flex-wrap: wrap;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-links {
                display: none;
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
                background: rgba(8, 17, 30, 0.96);
                border: 1px solid rgba(148, 193, 255, 0.14);
                border-radius: 18px;
                padding: 14px;
                gap: 6px;
                margin-top: 10px;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-cta {
                display: none;
            }

            .nav-link-custom {
                width: 100%;
            }

            .nav-link-custom::after {
                left: 12px;
                width: 28px;
                right: auto;
                bottom: 6px;
            }

            .hero-grid {
                grid-template-columns: 1fr;
            }

            .hero-visual {
                min-height: 280px;
            }

            .feature-grid2 {
                grid-template-columns: 1fr;
            }

            .feature-grid3 {
                grid-template-columns: 1fr 1fr;
            }

            .client-grid {
                grid-template-columns: 1fr;
            }

            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767.98px) {
            .brand-logo {
                font-size: 17px;
            }

            .badge-hot {
                font-size: 10px;
                padding: 2px 8px;
            }

            .container-custom {
                padding-left: 18px;
                padding-right: 18px;
            }

            .page-hero {
                padding-top: 110px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-main,
            .btn-ghost {
                width: 100%;
            }

            .feature-grid3 {
                grid-template-columns: 1fr;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .download-actions {
                flex-direction: column;
            }

            .btn-download-lg,
            .btn-outline-light {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 575.98px) {
            .brand-logo {
                font-size: 15px;
            }

            .badge-hot {
                display: none;
            }

            .page-hero {
                padding-top: 100px;
            }

            .hero-visual {
                min-height: 220px;
            }

            .hero-visual-content {
                padding: 20px;
            }

            .glass-panel {
                border-radius: 16px;
            }

            .feature-card-large,
            .feature-card-info {
                padding: 22px;
            }

            .client-card-body {
                padding: 20px;
            }

            .download-panel {
                padding: 28px 18px;
            }

            .btn-download-lg,
            .btn-outline-light {
                min-height: 50px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-main: #07111F;
            --bg-panel: #0F1D32;
            --bg-deep: #0B182C;
            --panel-soft: #132640;
            --glass-bg: rgba(18, 32, 51, 0.72);
            --glass-border: rgba(148, 193, 255, 0.16);
            --accent-cyan: #33D6FF;
            --accent-blue: #3B8CFF;
            --accent-purple: #6D74FF;
            --accent-amber: #FFC764;
            --text-main: #EAF3FF;
            --text-sub: #9EB3D1;
            --text-mute: #6C85A5;
            --grad-main: linear-gradient(135deg, #33D6FF 0%, #3B8CFF 55%, #6D74FF 100%);
            --radius-card: 20px;
            --radius-btn: 12px;
            --radius-pill: 999px;
            --radius-img: 16px;
            --shadow-card: 0 12px 32px rgba(1, 8, 20, 0.42);
            --shadow-glow: 0 0 0 1px rgba(77, 166, 255, 0.08), 0 12px 40px rgba(0, 20, 55, 0.55);
            --shadow-cta: 0 0 32px rgba(51, 214, 255, 0.30);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            --space-section: clamp(72px, 8vw, 112px);
            --nav-height: 72px;
        }

        /* base reset */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }
        body {
            margin: 0;
            background: var(--bg-main);
            color: var(--text-main);
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color .2s ease, border-color .2s ease, background .2s ease;
        }
        a:hover {
            color: #7FE6FF;
        }
        button:focus-visible,
        a:focus-visible,
        [tabindex]:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 6px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 16px;
            color: #fff;
            line-height: 1.35;
            letter-spacing: 0.02em;
            font-weight: 800;
        }
        p {
            margin-top: 0;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
        }
        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* header */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(6, 13, 24, 0.68);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: background .3s ease, box-shadow .3s ease;
        }
        .site-nav.scrolled {
            background: rgba(6, 13, 24, 0.82);
            box-shadow: 0 8px 30px rgba(1, 8, 20, 0.35);
        }
        .navbar-shell {
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(51, 214, 255, 0.45), transparent);
            pointer-events: none;
            opacity: 0;
            transition: opacity .3s ease;
        }
        .site-nav.scrolled .navbar-shell {
            opacity: 1;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            height: var(--nav-height);
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            flex-shrink: 0;
            font-size: 21px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            gap: 2px;
            transition: opacity .2s ease;
        }
        .brand-logo:hover {
            color: #fff;
            opacity: .88;
        }
        .badge-hot {
            margin-left: 8px;
            background: rgba(255, 199, 100, 0.14);
            border: 1px solid rgba(255, 199, 100, 0.34);
            color: var(--accent-amber);
            font-weight: 600;
            font-size: 12px;
            line-height: 1.4;
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 6px;
            margin: 0;
            padding: 0;
        }
        .nav-link-custom {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            white-space: nowrap;
            transition: background .2s ease, color .2s ease;
        }
        .nav-link-custom:hover {
            color: #fff;
            background: rgba(51, 214, 255, 0.08);
        }
        .nav-link-custom.active {
            color: #fff;
            background: rgba(51, 214, 255, 0.10);
        }
        .nav-link-custom.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 2px;
            border-radius: 2px;
            background: var(--grad-main);
            box-shadow: 0 0 12px var(--accent-cyan);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }
        .btn-download-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 42px;
            padding: 0 20px;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: .04em;
            background: var(--grad-main);
            color: #06101E;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-cta);
            transition: transform .2s ease, filter .2s ease, box-shadow .2s ease;
        }
        .btn-download-nav:hover {
            color: #07111F;
            filter: brightness(1.06);
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(51, 214, 255, .45);
        }
        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-btn);
            background: rgba(18, 32, 51, 0.6);
            color: var(--text-main);
            font-size: 18px;
            cursor: pointer;
            transition: border-color .2s, background .2s;
        }
        .nav-toggle:hover {
            border-color: rgba(51, 214, 255, .5);
            background: rgba(51, 214, 255, .08);
        }

        /* hero */
        .page-hero-cat {
            position: relative;
            isolation: isolate;
            overflow: hidden;
            padding: clamp(120px, 15vw, 190px) 0 clamp(56px, 8vw, 96px);
            background:
                radial-gradient(circle at 82% 16%, rgba(59, 140, 255, 0.28), transparent 42%),
                radial-gradient(circle at 12% 84%, rgba(109, 116, 255, 0.24), transparent 40%),
                url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
        }
        .page-hero-cat::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(180deg, rgba(7, 17, 31, 0.88) 0%, rgba(8, 20, 37, 0.82) 60%, var(--bg-main) 100%);
        }
        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(51, 214, 255, 0.08);
            border: 1px solid rgba(51, 214, 255, 0.22);
            color: var(--accent-cyan);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .08em;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: clamp(32px, 4.4vw, 56px);
            line-height: 1.25;
            margin-bottom: 18px;
            max-width: 720px;
            letter-spacing: .02em;
        }
        .grad-text {
            background: var(--grad-main);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-lead {
            color: var(--text-sub);
            font-size: clamp(16px, 1.6vw, 19px);
            line-height: 1.85;
            max-width: 640px;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 18px;
        }
        .hero-stat-row {
            display: flex;
            flex-wrap: wrap;
            gap: 18px 40px;
            margin-top: 26px;
            color: var(--text-sub);
        }
        .hero-stat-mini strong {
            display: block;
            font-size: 24px;
            color: #fff;
            font-weight: 800;
            line-height: 1.2;
        }
        .hero-stat-mini span {
            font-size: 13px;
            color: var(--text-mute);
        }
        .hero-side {
            position: relative;
            padding: 28px;
        }
        .hero-side::before {
            content: "";
            position: absolute;
            top: 0;
            right: 20px;
            left: 20px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(51, 214, 255, .5), transparent);
        }
        .side-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .problem-points {
            list-style: none;
            margin-bottom: 20px;
        }
        .problem-points li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 11px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.6;
        }
        .problem-points li i {
            position: absolute;
            left: 0;
            top: 4px;
            color: var(--accent-cyan);
            font-size: 13px;
        }

        /* buttons */
        .btn-app,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            height: 52px;
            padding: 0 26px;
            font-size: 16px;
            font-weight: 700;
            letter-spacing: .05em;
            border-radius: var(--radius-btn);
            white-space: nowrap;
            transition: transform .2s ease, box-shadow .2s ease, filter .2s ease, background .2s ease, border-color .2s ease;
        }
        .btn-app {
            background: var(--grad-main);
            color: #06101E;
            border: none;
            box-shadow: var(--shadow-cta);
        }
        .btn-app:hover {
            transform: translateY(-2px);
            filter: brightness(1.08);
            color: #07111F;
            box-shadow: 0 0 44px rgba(51, 214, 255, .5);
        }
        .btn-app:active {
            transform: translateY(0);
        }
        .btn-ghost {
            background: rgba(17, 31, 50, 0.72);
            color: #DDEBFF;
            border: 1px solid rgba(148, 193, 255, 0.28);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .btn-ghost:hover {
            color: #fff;
            border-color: rgba(51, 214, 255, .65);
            background: rgba(51, 214, 255, .08);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: translateY(0);
        }
        .btn-xl {
            height: 58px;
            padding: 0 30px;
            font-size: 16px;
        }

        /* general sections */
        .section-block {
            padding: var(--space-section) 0;
            position: relative;
        }
        .section-deep {
            background:
                linear-gradient(180deg, rgba(11, 24, 44, 0.4), rgba(11, 24, 44, 0.2)),
                var(--bg-main);
        }
        .section-head {
            margin-bottom: 40px;
        }
        .section-head.center {
            text-align: center;
        }
        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-cyan);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .16em;
            margin-bottom: 12px;
        }
        .section-eyebrow::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 3px;
            background: var(--grad-main);
            box-shadow: 0 0 12px var(--accent-cyan);
        }
        .section-title {
            font-size: clamp(26px, 3vw, 40px);
            max-width: 720px;
        }
        .section-head.center .section-title {
            margin-left: auto;
            margin-right: auto;
        }
        .section-lead {
            color: var(--text-sub);
            font-size: 16px;
            max-width: 720px;
        }
        .section-head.center .section-lead {
            margin-left: auto;
            margin-right: auto;
        }
        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(51, 214, 255, .32);
            box-shadow: var(--shadow-glow);
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* pre-check cards */
        .check-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr .9fr 1.1fr;
            gap: 20px;
        }
        .check-card {
            padding: 24px;
            min-height: 100%;
        }
        .check-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: rgba(51, 214, 255, .10);
            border: 1px solid rgba(51, 214, 255, .22);
            color: var(--accent-cyan);
            font-size: 20px;
            margin-bottom: 16px;
        }
        .check-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .check-card p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* installation steps */
        .steps-wrap {
            display: grid;
            grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
            align-items: center;
            gap: 44px;
        }
        .step-list {
            display: flex;
            flex-direction: column;
        }
        .step-item {
            display: grid;
            grid-template-columns: 54px 1fr;
            gap: 18px;
            position: relative;
            padding-bottom: 30px;
        }
        .step-item:last-child {
            padding-bottom: 0;
        }
        .step-item:not(:last-child)::before {
            content: "";
            position: absolute;
            left: 26px;
            top: 52px;
            bottom: 0;
            width: 1px;
            background: rgba(148, 193, 255, 0.2);
        }
        .step-no {
            width: 54px;
            height: 54px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: var(--grad-main);
            color: #07111F;
            font-weight: 800;
            font-size: 18px;
            box-shadow: 0 0 22px rgba(51, 214, 255, .28);
        }
        .step-text {
            padding-top: 2px;
        }
        .step-text h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: #fff;
            font-weight: 700;
        }
        .step-text p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 0;
        }
        .media-figure {
            margin: 0;
        }
        .media-figure img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: var(--radius-img);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-glow);
        }
        .media-figure figcaption {
            margin-top: 12px;
            color: var(--text-mute);
            font-size: 13px;
            text-align: center;
        }
        .proof-note {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            margin-top: 24px;
            padding: 16px 18px;
            border-radius: var(--radius-card);
            background: rgba(55, 211, 153, .08);
            border: 1px solid rgba(55, 211, 153, .2);
            color: var(--text-sub);
            font-size: 14px;
        }
        .proof-note i {
            color: var(--success);
            margin-top: 4px;
        }

        /* environment */
        .env-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
        }
        .env-card-wrap {
            grid-column: span 6;
        }
        .env-card-wide {
            grid-column: span 12;
        }
        .env-card {
            padding: 26px;
            height: 100%;
        }
        .env-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
        }
        .env-head-icon {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(51, 214, 255, .1);
            border: 1px solid rgba(51, 214, 255, .2);
            color: var(--accent-cyan);
            font-size: 18px;
        }
        .env-head strong {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }
        .env-tag {
            margin-left: auto;
            background: rgba(255, 199, 100, .12);
            border: 1px solid rgba(255, 199, 100, .32);
            color: var(--accent-amber);
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            white-space: nowrap;
        }
        .env-list {
            margin: 14px 0 0;
            padding: 0;
            list-style: none;
        }
        .env-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            min-height: 44px;
            border-bottom: 1px solid rgba(148, 193, 255, .1);
            color: var(--text-sub);
            font-size: 15px;
        }
        .env-list li:last-child {
            border-bottom: 0;
        }
        .env-list li span:last-child {
            color: #fff;
            font-weight: 600;
            text-align: right;
        }
        .env-list li span.amber {
            color: var(--accent-amber);
        }
        .env-note {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 18px 20px;
            border-radius: var(--radius-card);
            background: rgba(18, 32, 51, .5);
            border: 1px solid var(--glass-border);
            color: var(--text-sub);
            font-size: 14px;
        }
        .env-note i {
            color: var(--accent-cyan);
            margin-top: 4px;
        }

        /* problem quick guide */
        .pill-tabs {
            display: inline-flex;
            flex-wrap: wrap;
            gap: 8px;
            padding: 6px;
            background: rgba(7, 17, 31, .65);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-pill);
        }
        .pill-tabs .nav-link {
            border-radius: var(--radius-pill) !important;
            padding: 8px 20px;
            color: var(--text-sub);
            border: 1px solid transparent;
            font-size: 15px;
            font-weight: 500;
            background: transparent;
            transition: color .2s, background .2s, border-color .2s, box-shadow .2s;
        }
        .pill-tabs .nav-link:hover {
            color: #fff;
            background: rgba(51, 214, 255, .08);
            border-color: rgba(51, 214, 255, .3);
        }
        .pill-tabs .nav-link.active {
            background: var(--grad-main);
            color: #07111F;
            font-weight: 700;
            box-shadow: 0 0 20px rgba(51, 214, 255, .32);
            border-color: transparent;
        }
        .problem-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 20px;
        }
        .problem-card {
            background: rgba(10, 23, 41, .72);
            border: 1px solid rgba(148, 193, 255, .12);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: transform .2s, border-color .2s, background .2s;
        }
        .problem-card:hover {
            transform: translateY(-3px);
            background: rgba(18, 32, 51, .72);
            border-color: rgba(51, 214, 255, .3);
        }
        .problem-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .problem-title i {
            color: var(--accent-cyan);
            font-size: 14px;
        }
        .problem-card p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 14px;
        }
        .problem-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-cyan);
            font-size: 14px;
            font-weight: 600;
        }
        .problem-more i {
            font-size: 12px;
            transition: transform .2s;
        }
        .problem-more:hover .fa-arrow-right {
            transform: translateX(4px);
        }
        .problem-empty {
            display: none;
        }

        /* security ribbon */
        .security-ribbon {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 24px 28px;
            border-radius: var(--radius-card);
            background:
                linear-gradient(90deg, rgba(109, 116, 255, .14), rgba(15, 29, 50, .6) 45%, rgba(109, 116, 255, .08)),
                rgba(7, 17, 31, .6);
            border: 1px solid rgba(109, 116, 255, .28);
            color: var(--text-sub);
            font-size: 15px;
        }
        .security-ribbon i {
            color: var(--accent-purple);
            font-size: 22px;
            margin-top: 2px;
        }
        .security-ribbon strong {
            color: #fff;
            font-weight: 700;
            display: block;
            margin-bottom: 2px;
        }

        /* FAQ accordion */
        .accordion-faq {
            --bs-accordion-border-width: 0;
            --bs-accordion-btn-focus-box-shadow: none;
        }
        .accordion-faq .accordion-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 16px !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(1, 8, 20, .25);
        }
        .accordion-faq .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 700;
            padding: 18px 22px;
            border: 0;
            box-shadow: none;
            transition: background .2s, color .2s;
        }
        .accordion-faq .accordion-button:hover {
            color: #fff;
            background: rgba(51, 214, 255, .04);
        }
        .accordion-faq .accordion-button:not(.collapsed) {
            color: #fff;
            background: rgba(51, 214, 255, .06);
            box-shadow: inset 3px 0 0 var(--accent-cyan);
        }
        .accordion-faq .accordion-button::after {
            flex-shrink: 0;
            filter: invert(64%) sepia(72%) saturate(1100%) hue-rotate(165deg) brightness(1.1);
            background-size: 18px;
        }
        .accordion-faq .accordion-body {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            padding: 4px 24px 20px;
        }

        /* download CTA panel */
        .download-panel {
            position: relative;
            overflow: hidden;
            border-radius: 30px;
            padding: clamp(40px, 6vw, 72px) clamp(24px, 5vw, 60px);
            text-align: center;
            background:
                radial-gradient(circle at 12% 0%, rgba(51, 214, 255, .22), transparent 38%),
                radial-gradient(circle at 88% 100%, rgba(109, 116, 255, .25), transparent 42%),
                linear-gradient(145deg, rgba(18, 32, 51, .94), rgba(8, 21, 35, .98));
            border: 1px solid rgba(51, 214, 255, .25);
            box-shadow: var(--shadow-cta);
        }
        .download-panel::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(51, 214, 255, .8), transparent);
        }
        .download-title {
            font-size: clamp(24px, 3vw, 36px);
            max-width: 760px;
            margin: 0 auto 14px;
        }
        .download-sub {
            color: var(--text-sub);
            font-size: 16px;
            max-width: 720px;
            margin: 0 auto 30px;
        }
        .download-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 18px;
        }
        .download-meta {
            color: var(--text-mute);
            font-size: 13px;
            margin-top: 16px;
        }

        /* footer */
        .site-footer {
            background: #050C16;
            border-top: 1px solid rgba(148, 193, 255, .08);
            padding: 60px 0 26px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1.2fr 1.2fr 1.6fr;
            gap: 30px;
            margin-bottom: 40px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: .02em;
            margin-bottom: 8px;
        }
        .footer-desc {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 12px;
        }
        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a,
        .footer-links .small {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.6;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-links .small {
            color: var(--text-mute);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 20px;
            border-top: 1px solid rgba(148, 193, 255, .08);
            padding-top: 20px;
            color: var(--text-mute);
            font-size: 13px;
        }
        .footer-legal {
            display: inline-flex;
            align-items: center;
            gap: 16px;
        }

        /* responsive */
        @media (max-width: 1199.98px) {
            .nav-toggle {
                display: inline-flex;
            }
            .nav-links {
                position: fixed;
                top: 0;
                right: 0;
                bottom: 0;
                width: 310px;
                max-width: 86vw;
                height: 100vh;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                background: rgba(7, 17, 31, .96);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                padding: 90px 20px 30px;
                transform: translateX(105%);
                transition: transform .35s ease;
                border-left: 1px solid var(--glass-border);
                box-shadow: var(--shadow-glow);
                z-index: 1045;
                overflow-y: auto;
            }
            .nav-links.open {
                transform: none;
            }
            .nav-link-custom {
                display: flex;
                width: 100%;
                padding: 14px 18px;
                font-size: 16px;
                border-radius: 12px;
            }
            .nav-link-custom.active {
                background: rgba(51, 214, 255, .1);
            }
            .nav-link-custom.active::after {
                left: 0;
                transform: none;
                width: 3px;
                height: 22px;
                bottom: auto;
                top: 50%;
                margin-top: -11px;
                border-radius: 3px;
            }
        }
        @media (max-width: 767.98px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-inner {
                height: 64px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .nav-cta .btn-download-nav {
                height: 38px;
                padding: 0 12px;
                font-size: 13px;
                gap: 5px;
            }
            .page-hero-cat {
                padding-top: 110px;
                padding-bottom: 48px;
            }
            .check-grid {
                grid-template-columns: 1fr;
            }
            .steps-wrap {
                grid-template-columns: 1fr;
            }
            .env-card-wrap {
                grid-column: span 12;
            }
            .env-card-wide {
                grid-column: span 12;
            }
            .problem-grid {
                grid-template-columns: 1fr;
            }
            .download-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .download-actions .btn-app,
            .download-actions .btn-ghost {
                width: 100%;
            }
            .security-ribbon {
                flex-direction: column;
            }
        }
        @media (max-width: 575.98px) {
            .brand-logo {
                gap: 0;
            }
            .badge-hot {
                display: none;
            }
            .btn-download-nav {
                font-size: 13px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-app,
            .hero-actions .btn-ghost {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-stat-row {
                gap: 12px 24px;
            }
            .pill-tabs {
                width: 100%;
                border-radius: 18px;
            }
            .pill-tabs .nav-link {
                flex: 1 1 42%;
                text-align: center;
            }
        }

/* roulang page: category4 */
:root {
            --bg: #07111F;
            --bg-2: #0B182C;
            --bg-3: #081523;
            --surface: #0F1D32;
            --surface-2: #132640;
            --glass: rgba(18, 32, 51, 0.72);
            --glass-strong: rgba(9, 17, 29, 0.88);
            --border: rgba(148, 193, 255, 0.16);
            --border-light: rgba(148, 193, 255, 0.26);
            --cyan: #33D6FF;
            --blue: #3B8CFF;
            --purple: #6D74FF;
            --amber: #FFC764;
            --success: #37D399;
            --warning: #FF9066;
            --text: #EAF3FF;
            --text-2: #9EB3D1;
            --text-3: #6C85A5;
            --radius-card: 20px;
            --radius-ctrl: 12px;
            --shadow-base: 0 12px 32px rgba(1, 8, 20, 0.42);
            --shadow-glow: 0 0 0 1px rgba(77, 166, 255, 0.08), 0 12px 40px rgba(0, 20, 55, 0.55);
            --shadow-cta: 0 0 32px rgba(51, 214, 255, 0.30);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --space-section: clamp(72px, 8vw, 112px);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            background: var(--bg);
            color: var(--text);
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.35;
            color: var(--text);
            font-weight: 700;
            letter-spacing: 0.02em;
            margin: 0 0 18px;
        }

        p {
            margin: 0 0 16px;
        }

        a {
            color: var(--cyan);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: #a7ecff;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 4px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            display: block;
        }

        ul,
        ol {
            padding-left: 1.25rem;
        }

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .text-gradient {
            background: linear-gradient(135deg, #46dbff, #6d7aff);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .section-block {
            padding: var(--space-section) 0;
            position: relative;
        }

        .bg-deep {
            background: var(--bg-3);
        }

        .bg-panel-surface {
            background: var(--bg-2);
        }

        .section-head {
            max-width: 820px;
            margin-bottom: 44px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(51, 214, 255, 0.08);
            border: 1px solid rgba(51, 214, 255, 0.2);
            border-radius: 999px;
            padding: 5px 16px;
            font-size: 13px;
            color: var(--cyan);
            letter-spacing: 0.05em;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(28px, 3.4vw, 40px);
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .section-desc {
            color: var(--text-2);
            font-size: 16px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* 导航 */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            height: 72px;
            background: rgba(6, 13, 24, 0.55);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: background 0.45s ease, backdrop-filter 0.45s ease, box-shadow 0.45s ease, border-color 0.45s ease;
            border-bottom: 1px solid transparent;
        }

        .site-nav.scrolled {
            background: rgba(6, 13, 24, 0.86);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(148, 193, 255, 0.1);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.28);
        }

        .site-nav::after {
            content: "";
            position: absolute;
            left: 10%;
            right: 10%;
            bottom: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(51, 214, 255, 0.55), rgba(109, 116, 255, 0.45), transparent);
            opacity: 0.6;
            pointer-events: none;
        }

        .navbar-shell {
            display: none;
        }

        .nav-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 72px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 19px;
            color: #FFF;
            font-weight: 800;
            letter-spacing: 0.03em;
            line-height: 1.2;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            color: #FFF;
        }

        .badge-hot {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: rgba(255, 199, 100, 0.12);
            border: 1px solid rgba(255, 199, 100, 0.28);
            color: var(--amber);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            justify-content: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 5px;
            flex: 1;
        }

        .nav-item {
            margin: 0;
            padding: 0;
        }

        .nav-link-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 0 15px;
            color: var(--text-2);
            font-size: 15px;
            font-weight: 500;
            border-radius: 8px;
            position: relative;
            transition: color 0.25s ease, background 0.25s ease;
        }

        .nav-link-custom::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 3px;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--cyan), var(--purple));
            transform: translateX(-50%);
            transition: width 0.3s ease;
            box-shadow: 0 0 10px rgba(51, 214, 255, 0.55);
        }

        .nav-link-custom:hover,
        .nav-link-custom:focus-visible {
            color: #fff;
            background: rgba(51, 214, 255, 0.06);
        }

        .nav-link-custom:hover::after,
        .nav-link-custom:focus-visible::after {
            width: 24px;
        }

        .nav-link-custom.active {
            color: #fff;
            background: rgba(51, 214, 255, 0.08);
        }

        .nav-link-custom.active::after {
            width: 30px;
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .btn-download-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 0 20px;
            border: 0;
            border-radius: var(--radius-ctrl);
            background: linear-gradient(135deg, var(--cyan), #5a6bff);
            color: #06111F;
            font-weight: 700;
            font-size: 15px;
            letter-spacing: 0.04em;
            box-shadow: 0 0 22px rgba(51, 214, 255, 0.18);
            transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
        }

        .btn-download-nav:hover {
            transform: translateY(-2px);
            color: #06111F;
            box-shadow: 0 8px 28px rgba(51, 214, 255, 0.28);
            filter: brightness(1.06);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: 12px;
            color: var(--text);
            font-size: 18px;
            transition: background 0.25s ease, border-color 0.25s ease;
        }

        .nav-toggle:hover {
            background: rgba(51, 214, 255, 0.1);
            border-color: rgba(51, 214, 255, 0.4);
        }

        /* 按钮系统 */
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 52px;
            padding: 0 28px;
            border: 0;
            border-radius: var(--radius-ctrl);
            background: linear-gradient(135deg, #33D6FF, #5c8bff);
            color: #05101e;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 0.04em;
            line-height: 1.2;
            box-shadow: 0 0 24px rgba(51, 214, 255, 0.18), 0 14px 34px rgba(0, 0, 0, 0.24);
            transition: transform 0.25s ease, box-shadow 0.3s ease, filter 0.25s ease;
        }

        .btn-main:hover {
            transform: translateY(-2px);
            color: #05101e;
            box-shadow: 0 10px 36px rgba(51, 214, 255, 0.32);
            filter: brightness(1.06);
        }

        .btn-main.btn-purple-glow {
            background: linear-gradient(135deg, #6D74FF, #3B8CFF);
            box-shadow: 0 0 24px rgba(109, 116, 255, 0.18), 0 14px 34px rgba(0, 0, 0, 0.24);
        }

        .btn-main.btn-purple-glow:hover {
            box-shadow: 0 10px 36px rgba(109, 116, 255, 0.3);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 50px;
            padding: 0 26px;
            border: 1px solid var(--border-light);
            background: rgba(148, 193, 255, 0.06);
            color: var(--text);
            border-radius: var(--radius-ctrl);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.03em;
            transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
        }

        .btn-ghost:hover {
            background: rgba(148, 193, 255, 0.12);
            border-color: rgba(51, 214, 255, 0.5);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-light-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-2);
            font-weight: 600;
            font-size: 15px;
            transition: color 0.2s ease;
        }

        .btn-light-link:hover {
            color: var(--cyan);
        }

        /* 内页 Hero */
        .page-hero {
            position: relative;
            background:
                linear-gradient(180deg, rgba(7, 17, 31, 0.82) 0%, rgba(7, 17, 31, 0.72) 55%, var(--bg) 100%),
                url("/assets/images/backpic/back-1.webp") center center / cover no-repeat;
            padding: 158px 0 70px;
            margin-bottom: 0;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            width: 460px;
            height: 460px;
            right: -120px;
            top: -90px;
            background: radial-gradient(circle, rgba(51, 214, 255, 0.14), transparent 65%);
            pointer-events: none;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            width: 320px;
            height: 320px;
            left: 0;
            bottom: -160px;
            background: radial-gradient(circle, rgba(109, 116, 255, 0.14), transparent 65%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 7px;
            font-size: 14px;
            color: var(--text-3);
            margin-bottom: 24px;
        }

        .hero-breadcrumb svg,
        .hero-breadcrumb i {
            color: var(--cyan);
            font-size: 12px;
        }

        .hero-breadcrumb a {
            color: var(--text-2);
        }

        .hero-breadcrumb a:hover {
            color: var(--cyan);
        }

        .hero-breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(51, 214, 255, 0.1);
            border: 1px solid rgba(51, 214, 255, 0.22);
            color: var(--cyan);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: clamp(34px, 5vw, 58px);
            font-weight: 800;
            letter-spacing: 0.02em;
            color: #f4f9ff;
            line-height: 1.22;
            margin-bottom: 18px;
        }

        .hero-sub {
            max-width: 640px;
            color: var(--text-2);
            font-size: 17px;
            line-height: 1.9;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 34px;
        }

        .hero-note {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            padding-top: 22px;
            border-top: 1px solid rgba(148, 193, 255, 0.12);
            max-width: 760px;
        }

        .hero-note span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--text-2);
            font-size: 13px;
            background: rgba(6, 15, 27, 0.4);
            border: 1px solid rgba(148, 193, 255, 0.1);
            border-radius: 999px;
            padding: 4px 14px;
        }

        .hero-note i {
            color: var(--cyan);
        }

        /* 玻璃卡片 */
        .glass-card {
            background: var(--glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-glow);
        }

        .feature-card {
            background: rgba(15, 29, 50, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.14);
            border-radius: var(--radius-card);
            padding: 26px;
            height: 100%;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            border-color: rgba(51, 214, 255, 0.28);
            box-shadow: var(--shadow-glow);
        }

        .feature-card::after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(51, 214, 255, 0.3), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .feature-card:hover::after {
            opacity: 1;
        }

        .card-icon-box {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: rgba(51, 214, 255, 0.1);
            border: 1px solid rgba(51, 214, 255, 0.2);
            color: var(--cyan);
            border-radius: 15px;
            font-size: 22px;
            margin-bottom: 18px;
            box-shadow: 0 0 18px rgba(51, 214, 255, 0.08);
        }

        .card-icon-box.purple {
            background: rgba(109, 116, 255, 0.1);
            border-color: rgba(109, 116, 255, 0.24);
            color: #9ca1ff;
        }

        .card-icon-box.amber {
            background: rgba(255, 199, 100, 0.1);
            border-color: rgba(255, 199, 100, 0.22);
            color: var(--amber);
        }

        .feature-title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .feature-text {
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .small-feature-list {
            list-style: none;
            margin: 16px 0 0;
            padding: 0;
        }

        .small-feature-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 7px 0;
            color: var(--text-2);
            font-size: 14px;
        }

        .small-feature-list i {
            color: var(--success);
            margin-top: 5px;
            font-size: 13px;
        }

        /* 卡片集 */
        .mini-feature-card {
            background: linear-gradient(180deg, rgba(15, 29, 50, 0.75), rgba(11, 24, 44, 0.7));
            border: 1px solid rgba(148, 193, 255, 0.12);
            border-radius: 18px;
            padding: 24px;
            height: 100%;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

        .mini-feature-card:hover {
            transform: translateY(-5px);
            border-color: rgba(51, 214, 255, 0.25);
        }

        .mini-card-no {
            font-size: 14px;
            color: var(--cyan);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .mini-feature-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .mini-feature-desc {
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* 场景卡片 */
        .risk-card {
            background: rgba(15, 29, 50, 0.72);
            border: 1px solid rgba(148, 193, 255, 0.14);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .risk-card:hover {
            transform: translateY(-5px);
            border-color: rgba(51, 214, 255, 0.28);
            box-shadow: var(--shadow-glow);
        }

        .risk-card-img-wrap {
            height: 240px;
            overflow: hidden;
            border-bottom: 1px solid rgba(148, 193, 255, 0.1);
            background: var(--bg-2);
        }

        .risk-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .risk-card:hover .risk-card-img-wrap img {
            transform: scale(1.03);
        }

        .risk-card-body {
            padding: 26px;
        }

        .risk-tag {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255, 199, 100, 0.1);
            color: var(--amber);
            border: 1px solid rgba(255, 199, 100, 0.18);
            border-radius: 999px;
            font-size: 12px;
            padding: 4px 12px;
            margin-bottom: 16px;
        }

        .risk-card-title {
            font-size: 21px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .risk-card-desc {
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .tag-line {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(148, 193, 255, 0.06);
            border: 1px solid rgba(148, 193, 255, 0.14);
            border-radius: 999px;
            padding: 3px 12px;
            color: var(--text-2);
            font-size: 13px;
        }

        .tag-item i {
            color: var(--cyan);
            font-size: 12px;
        }

        /* 清单 / 混合列 */
        .check-panel {
            background: linear-gradient(160deg, rgba(18, 32, 51, 0.88), rgba(9, 18, 30, 0.82));
            border: 1px solid var(--border);
            border-radius: 22px;
            padding: 30px;
            box-shadow: var(--shadow-glow);
            backdrop-filter: blur(14px);
        }

        .check-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .check-list li {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 14px 0;
            border-bottom: 1px solid rgba(148, 193, 255, 0.09);
            line-height: 1.7;
        }

        .check-list li:last-child {
            border-bottom: 0;
        }

        .check-icon {
            width: 28px;
            height: 28px;
            background: rgba(55, 211, 153, 0.12);
            border: 1px solid rgba(55, 211, 153, 0.26);
            color: var(--success);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
            margin-top: 3px;
        }

        .check-title {
            font-weight: 600;
            color: var(--text);
            font-size: 16px;
        }

        .check-desc {
            color: var(--text-2);
            font-size: 14px;
            margin-top: 3px;
        }

        .notice-mini {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: rgba(255, 144, 102, 0.07);
            border: 1px solid rgba(255, 144, 102, 0.2);
            padding: 18px;
            border-radius: 16px;
            margin-top: 22px;
        }

        .notice-mini i {
            color: var(--warning);
            margin-top: 4px;
        }

        .notice-mini p {
            font-size: 14px;
            color: var(--text-2);
            margin: 0;
        }

        .anchor-link-group {
            margin-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
        }

        /* 流程步骤 */
        .step-card {
            position: relative;
            background: rgba(15, 29, 50, 0.55);
            border: 1px solid rgba(148, 193, 255, 0.12);
            border-radius: 20px;
            padding: 30px 24px 24px;
            height: 100%;
            overflow: hidden;
            transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
        }

        .step-card:hover {
            transform: translateY(-5px);
            background: rgba(18, 32, 51, 0.76);
            border-color: rgba(51, 214, 255, 0.25);
        }

        .step-no {
            font-size: 46px;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 24px;
            background: linear-gradient(135deg, rgba(51, 214, 255, 0.9), rgba(109, 116, 255, 0.9));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            opacity: 0.9;
        }

        .step-title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-desc {
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .step-line {
            position: absolute;
            top: 40px;
            right: -8%;
            width: 16%;
            height: 1px;
            background: linear-gradient(90deg, rgba(51, 214, 255, 0.35), transparent);
            display: none;
        }

        @media (min-width: 992px) {
            .step-card .step-line {
                display: block;
            }
            .step-card:last-child .step-line {
                display: none;
            }
        }

        /* FAQ */
        .faq-accordion .accordion-item {
            background: rgba(15, 29, 50, 0.66);
            border: 1px solid rgba(148, 193, 255, 0.13);
            border-radius: 18px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
        }

        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(51, 214, 255, 0.28);
            background: rgba(19, 38, 64, 0.78);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text);
            font-weight: 600;
            font-size: 17px;
            padding: 20px 24px;
            border: 0;
            box-shadow: none;
            border-radius: 18px !important;
            letter-spacing: 0.015em;
        }

        .faq-accordion .accordion-button::after {
            filter: brightness(0) invert(1);
            opacity: 0.7;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: #fff;
            box-shadow: none;
            background: transparent;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            opacity: 1;
            transform: rotate(180deg);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
        }

        .faq-accordion .accordion-body {
            padding: 0 24px 22px;
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-accordion .accordion-item.has-neon::before {
            content: "";
            position: absolute;
            left: 0;
            top: 14px;
            bottom: 14px;
            width: 3px;
            border-radius: 0 3px 3px 0;
            background: linear-gradient(180deg, var(--cyan), var(--purple));
            box-shadow: 0 0 12px rgba(51, 214, 255, 0.38);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .faq-accordion .accordion-item.has-neon {
            position: relative;
        }

        .faq-accordion .accordion-item.has-neon:has(.accordion-button:not(.collapsed))::before {
            opacity: 1;
        }

        /* CTA */
        .cta-download-panel {
            position: relative;
            border-radius: 28px;
            padding: clamp(36px, 5.6vw, 72px);
            background:
                linear-gradient(135deg, rgba(7, 17, 31, 0.92), rgba(13, 27, 47, 0.9)),
                url("/assets/images/backpic/back-2.png") center center / cover no-repeat;
            border: 1px solid rgba(148, 193, 255, 0.18);
            box-shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
            overflow: hidden;
        }

        .cta-download-panel::before {
            content: "";
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(51, 214, 255, 0.14), transparent 64%);
            top: -140px;
            right: -50px;
            pointer-events: none;
        }

        .cta-download-panel .cta-title {
            font-size: clamp(26px, 3.6vw, 38px);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-download-panel p {
            color: var(--text-2);
            max-width: 680px;
        }

        .cta-btn-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 28px;
        }

        /* 页脚 */
        .site-footer {
            background: #060D17;
            border-top: 1px solid rgba(148, 193, 255, 0.08);
            padding: 68px 0 30px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
            gap: 40px;
            margin-bottom: 42px;
        }

        .footer-brand {
            font-size: 21px;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-3);
            line-height: 1.85;
            max-width: 420px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 11px;
        }

        .footer-links a {
            color: var(--text-2);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.25s ease, transform 0.25s ease;
            border-bottom: 1px solid transparent;
        }

        .footer-links a:hover {
            color: var(--cyan);
            border-bottom-color: rgba(51, 214, 255, 0.35);
        }

        .footer-links .small {
            font-size: 14px;
            color: var(--text-3);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            padding-top: 24px;
            border-top: 1px solid rgba(148, 193, 255, 0.08);
            font-size: 14px;
            color: var(--text-3);
        }

        .footer-legal {
            display: flex;
            align-items: center;
            gap: 18px;
            font-size: 13px;
        }

        /* 响应式 */
        @media (min-width: 1200px) {
            .section-block {
                --space-section: clamp(76px, 7vw, 108px);
            }
        }

        @media (max-width: 1199.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 991.98px) {
            .site-nav,
            .nav-inner {
                height: 64px;
            }

            .page-hero {
                padding: 132px 0 58px;
            }

            .nav-links {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(7, 13, 24, 0.96);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: stretch;
                justify-content: flex-start;
                gap: 8px;
                padding: 18px 24px 26px;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 30px 60px rgba(0, 0, 0, 0.36);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-link-custom {
                justify-content: flex-start;
                min-height: 46px;
                padding: 0 12px;
                border-radius: 12px;
            }

            .nav-link-custom::after {
                left: 12px;
                transform: none;
                bottom: auto;
                top: 50%;
                width: 0;
                height: 18px;
                margin-top: -9px;
            }

            .nav-link-custom:hover::after,
            .nav-link-custom.active::after {
                width: 3px;
            }

            .nav-link-custom.active {
                background: rgba(51, 214, 255, 0.08);
                padding-left: 16px;
            }

            .nav-cta {
                margin-left: auto;
            }

            .nav-toggle {
                display: inline-flex;
                margin-left: 4px;
            }

            .section-head {
                margin-bottom: 34px;
            }
        }

        @media (max-width: 767.98px) {
            .container-custom {
                padding: 0 18px;
            }

            .brand-logo {
                font-size: 17px;
                gap: 8px;
            }

            .badge-hot {
                display: none;
            }

            .btn-download-nav {
                width: 46px;
                padding: 0;
                font-size: 0;
                gap: 0;
                box-shadow: none;
                background: transparent;
                border: 1px solid rgba(51, 214, 255, 0.28);
                color: var(--cyan);
            }

            .btn-download-nav i {
                font-size: 18px;
                margin: 0 !important;
            }

            .btn-download-nav:hover {
                background: rgba(51, 214, 255, 0.1);
                color: var(--cyan);
                box-shadow: none;
                transform: none;
            }

            .page-hero {
                padding: 118px 0 44px;
            }

            .page-hero::before {
                width: 300px;
                height: 300px;
                right: -160px;
            }

            .hero-title {
                font-size: 32px;
            }

            .hero-sub {
                font-size: 15px;
                line-height: 1.85;
            }

            .hero-actions .btn-main,
            .hero-actions .btn-ghost {
                width: 100%;
            }

            .feature-card,
            .risk-card-body,
            .check-panel,
            .cta-download-panel {
                padding: 20px;
            }

            .cta-btn-row .btn-main,
            .cta-btn-row .btn-ghost {
                width: 100%;
                margin-left: 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .section-title {
                font-size: 27px;
            }
        }

        @media (max-width: 399.98px) {
            .brand-logo {
                font-size: 16px;
            }

            .nav-toggle {
                width: 42px;
                height: 42px;
            }

            .btn-download-nav {
                width: 42px;
                height: 42px;
            }
        }