/* roulang page: index */
/* ==================== 设计变量 ==================== */
        :root {
            --primary: #00B4A0;
            --primary-dark: #009688;
            --primary-glow: rgba(0, 180, 161, 0.4);
            --accent: #CAFF50;
            --secondary: #0A1A2F;
            --bg: #0B1526;
            --bg-deep: #050A12;
            --bg-card: rgba(255, 255, 255, 0.05);
            --bg-card-hover: rgba(255, 255, 255, 0.09);
            --border: rgba(255, 255, 255, 0.08);
            --border-bright: rgba(255, 255, 255, 0.18);
            --text-main: #EAF2F5;
            --text-muted: #93AAB8;
            --text-weak: #60798A;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(0, 181, 161, 0.4);
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        /* ==================== 基础 Reset ==================== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: system-ui, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text-main);
            background: linear-gradient(135deg, #0A1A2F 0%, #0B1526 40%, #0D1A2C 100%);
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition);
        }

        a:hover {
            color: #00d4be;
        }

        button {
            border: none;
            outline: none;
            font-family: inherit;
        }

        input,
        textarea {
            font-family: inherit;
        }

        /* ==================== 容器 ==================== */
        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            padding: 96px 0;
        }

        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 64px;
        }

        .section-head .section-eyebrow {
            display: inline-block;
            font-size: 0.8rem;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(0, 180, 161, 0.12);
            border: 1px solid rgba(0, 180, 161, 0.25);
            padding: 4px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
            font-weight: 500;
        }

        .section-head h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.7;
        }

        /* ==================== 顶栏 ==================== */
        .top-bar {
            background: rgba(5, 10, 18, 0.6);
            border-bottom: 1px solid var(--border);
            font-size: 0.8rem;
            color: var(--text-muted);
            backdrop-filter: blur(10px);
        }

        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            min-height: 38px;
            flex-wrap: wrap;
        }

        .top-bar .top-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .top-bar .top-left i {
            color: var(--primary);
            margin-right: 6px;
        }

        .top-bar .top-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .top-bar .top-right span {
            color: var(--text-muted);
        }

        .top-bar .top-right .divider {
            width: 1px;
            height: 14px;
            background: var(--border);
        }

        /* ==================== 导航 ==================== */
        .main-nav-wrap {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 21, 38, 0.72);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .main-nav-wrap.scrolled {
            background: rgba(8, 16, 30, 0.85);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
        }

        .main-nav .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--text-main);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .main-nav .logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), #00D4C2);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #06121F;
            font-size: 1.1rem;
            font-weight: 700;
            box-shadow: 0 0 16px rgba(0, 180, 161, 0.35);
        }

        .main-nav .logo .logo-text {
            font-size: 1.15rem;
            white-space: nowrap;
        }

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

        .nav-links li a {
            display: inline-block;
            padding: 10px 18px;
            color: var(--text-muted);
            font-size: 0.92rem;
            font-weight: 400;
            border-radius: var(--radius-sm);
            position: relative;
            transition: all var(--transition);
            letter-spacing: 0.02em;
        }

        .nav-links li a::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 4px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform var(--transition);
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--text-main);
        }

        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            transform: scaleX(1);
        }

        .nav-links li a.active {
            font-weight: 500;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-cta .btn-nav {
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            transition: all var(--transition);
        }

        .btn-outline-primary {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline-primary:hover {
            background: rgba(0, 180, 161, 0.1);
            color: #00d4be;
            border-color: #00d4be;
        }

        .btn-solid-primary {
            background: var(--primary);
            color: #06121F;
            box-shadow: 0 0 12px rgba(0, 180, 161, 0.3);
        }

        .btn-solid-primary:hover {
            background: #00c8b6;
            color: #06121F;
            box-shadow: 0 0 24px rgba(0, 180, 161, 0.5);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            width: 42px;
            height: 42px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--text-main);
            font-size: 1.2rem;
            transition: background var(--transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ==================== Hero ==================== */
        .hero {
            position: relative;
            padding: 120px 0 140px;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 14, 25, 0.35) 0%, rgba(8, 14, 25, 0.78) 60%, #0B1526 100%);
        }

        .hero::after {
            content: "";
            position: absolute;
            width: 640px;
            height: 640px;
            background: radial-gradient(circle, rgba(0, 180, 161, 0.22) 0%, transparent 70%);
            right: -180px;
            top: -100px;
            border-radius: 50%;
            pointer-events: none;
        }

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

        .hero-inner {
            max-width: 680px;
        }

        .hero h1 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 600;
            line-height: 1.25;
            margin-bottom: 18px;
            color: var(--text-main);
            letter-spacing: -0.02em;
        }

        .hero h1 .highlight {
            color: var(--primary);
            text-shadow: 0 0 30px rgba(0, 180, 161, 0.4);
        }

        .hero .hero-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 560px;
        }

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

        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 500;
            background: var(--primary);
            color: #06121F;
            border: 1px solid rgba(255, 255, 255, 0.2);
            box-shadow: 0 0 20px rgba(0, 180, 161, 0.35);
            transition: all var(--transition);
        }

        .btn-primary-lg:hover {
            background: #00c8b6;
            color: #06121F;
            box-shadow: 0 0 36px rgba(0, 180, 161, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 400;
            background: transparent;
            color: var(--text-main);
            border: 1px solid var(--border-bright);
            transition: all var(--transition);
        }

        .btn-outline-lg:hover {
            background: rgba(0, 180, 161, 0.1);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ==================== 信任指标条 ==================== */
        .stats-band {
            background: rgba(5, 10, 18, 0.5);
            border-bottom: 1px solid var(--border);
            padding: 40px 0;
            margin-top: -1px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stats-item {
            text-align: center;
            padding: 16px 20px;
            border-left: 1px solid var(--border);
        }

        .stats-item:first-child {
            border-left: none;
        }

        .stats-item .stat-num {
            font-size: 2rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.2;
        }

        .stats-item .stat-num .accent {
            color: var(--accent);
        }

        .stats-item .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ==================== 功能分组区 ==================== */
        .features-section {
            background: transparent;
        }

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            text-align: center;
            backdrop-filter: blur(12px);
            transition: all var(--transition);
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.06);
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-bright);
            transform: translateY(-6px);
            box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.08);
        }

        .feature-card .icon-box {
            width: 64px;
            height: 64px;
            margin: 0 auto 24px;
            background: linear-gradient(135deg, rgba(0, 180, 161, 0.18), rgba(0, 180, 161, 0.06));
            border: 1px solid rgba(0, 180, 161, 0.3);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            transition: all var(--transition);
        }

        .feature-card:hover .icon-box {
            transform: scale(1.06) rotate(3deg);
            box-shadow: 0 0 20px rgba(0, 180, 161, 0.25);
        }

        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ==================== 使用场景区 ==================== */
        .scenes-section {
            background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.15));
        }

        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .scene-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            background: var(--bg-card);
            backdrop-filter: blur(8px);
            transition: all var(--transition);
            min-height: 320px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            background-size: cover;
            background-position: center;
        }

        .scene-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(5, 10, 18, 0.9) 100%);
        }

        .scene-card .scene-content {
            position: relative;
            z-index: 2;
            padding: 32px;
        }

        .scene-card h3 {
            font-size: 1.25rem;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .scene-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .scene-card .scene-link {
            font-size: 0.88rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }

        .scene-card .scene-link:hover {
            gap: 12px;
        }

        /* 场景背景图 */
        .scene-1 { background-image: url('/assets/images/coverpic/cover-1.png'); }
        .scene-2 { background-image: url('/assets/images/coverpic/cover-2.webp'); }
        .scene-3 { background-image: url('/assets/images/coverpic/cover-3.webp'); }
        .scene-4 { background-image: url('/assets/images/coverpic/cover-4.png'); }

        /* ==================== 产品特色区 ==================== */
        .showcase-section {
            background: linear-gradient(180deg, rgba(0, 0, 0, 0.1), transparent);
        }

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

        .showcase-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            backdrop-filter: blur(12px);
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
        }

        .showcase-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-bright);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
        }

        .showcase-card .showcase-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 180, 161, 0.12);
            border: 1px solid rgba(0, 180, 161, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .showcase-card h3 {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .showcase-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .showcase-card .showcase-img {
            margin-top: 20px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .showcase-card .showcase-img img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        /* ==================== 最新资讯区 ==================== */
        .news-section {
            background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.2));
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-item {
            display: flex;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            gap: 24px;
            backdrop-filter: blur(8px);
            transition: all var(--transition);
        }

        .news-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-bright);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }

        .news-item .news-thumb {
            flex: 0 0 160px;
            height: 120px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .news-item .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-item .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-item .news-content .badge-tag {
            display: inline-block;
            font-size: 0.75rem;
            padding: 3px 12px;
            border-radius: 30px;
            background: rgba(0, 180, 161, 0.15);
            color: var(--primary);
            border: 1px solid rgba(0, 180, 161, 0.25);
            margin-bottom: 8px;
            width: fit-content;
        }

        .news-item .news-content h3 {
            font-size: 1.1rem;
            font-weight: 500;
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .news-item .news-content h3 a {
            color: var(--text-main);
        }

        .news-item .news-content h3 a:hover {
            color: var(--primary);
        }

        .news-item .news-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-weak);
        }

        .news-meta .read-more {
            margin-left: auto;
            color: var(--primary);
            font-weight: 400;
            font-size: 0.82rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }

        .news-meta .read-more:hover {
            gap: 12px;
            color: #00d4be;
        }

        .empty-state {
            text-align: center;
            padding: 80px 20px;
            color: var(--text-weak);
            background: var(--bg-card);
            border: 1px dashed var(--border);
            border-radius: var(--radius-lg);
            font-size: 0.95rem;
        }

        .news-more {
            text-align: center;
            margin-top: 40px;
        }

        .btn-secondary-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            background: transparent;
            border: 1px solid var(--border-bright);
            color: var(--text-main);
            font-size: 0.92rem;
            transition: all var(--transition);
        }

        .btn-secondary-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 180, 161, 0.08);
        }

        /* ==================== 成功案例区 ==================== */
        .cases-section {
            background: transparent;
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px;
            backdrop-filter: blur(10px);
            transition: all var(--transition);
        }

        .case-card:hover {
            border-color: var(--border-bright);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

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

        .case-card .case-avatar {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 180, 161, 0.22), rgba(0, 180, 161, 0.08));
            border: 1px solid rgba(0, 180, 161, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--primary);
        }

        .case-card .case-name {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-main);
        }

        .case-card .case-industry {
            font-size: 0.8rem;
            color: var(--text-weak);
        }

        .case-card .case-desc {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .case-card .case-metric {
            display: inline-flex;
            align-items: baseline;
            gap: 6px;
            background: rgba(202, 255, 80, 0.08);
            border: 1px solid rgba(202, 255, 80, 0.2);
            border-radius: var(--radius-sm);
            padding: 8px 16px;
        }

        .case-card .case-metric .metric-num {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--accent);
        }

        .case-card .case-metric .metric-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ==================== 价格计划区 ==================== */
        .pricing-section {
            background: linear-gradient(180deg, rgba(0, 0, 0, 0.15), transparent);
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            align-items: stretch;
        }

        .pricing-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
            transition: all var(--transition);
            position: relative;
        }

        .pricing-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-bright);
            box-shadow: var(--shadow-card);
        }

        .pricing-card.featured {
            background: linear-gradient(135deg, rgba(0, 180, 161, 0.14), rgba(0, 180, 161, 0.05));
            border-color: rgba(0, 180, 161, 0.35);
            box-shadow: 0 0 40px rgba(0, 180, 161, 0.18);
            transform: scale(1.02);
        }

        .pricing-card.featured:hover {
            transform: scale(1.02) translateY(-6px);
            box-shadow: 0 0 50px rgba(0, 180, 161, 0.3);
        }

        .pricing-card.featured::before {
            content: "推荐";
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--accent);
            color: #0A1A2F;
            font-size: 0.75rem;
            font-weight: 500;
            padding: 2px 14px;
            border-radius: 20px;
        }

        .pricing-card .plan-name {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .pricing-card .plan-price {
            font-size: 2.4rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .pricing-card .plan-price .currency,
        .pricing-card .plan-price .period {
            font-size: 1rem;
            font-weight: 400;
            color: var(--text-weak);
        }

        .pricing-card .plan-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }

        .pricing-card .plan-features {
            list-style: none;
            padding: 0;
            margin: 0 0 32px;
            flex: 1;
        }

        .pricing-card .plan-features li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .pricing-card .plan-features li i {
            color: var(--primary);
            margin-top: 2px;
            font-size: 0.85rem;
        }

        .pricing-card .plan-features li.off i {
            color: var(--text-weak);
            opacity: 0.5;
        }

        .pricing-card .btn-plan {
            display: block;
            text-align: center;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition);
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .pricing-card .btn-plan:hover {
            background: rgba(0, 180, 161, 0.1);
            color: #00d4be;
        }

        .pricing-card.featured .btn-plan {
            background: var(--primary);
            color: #06121F;
            border-color: var(--primary);
            box-shadow: 0 0 16px rgba(0, 180, 161, 0.35);
        }

        .pricing-card.featured .btn-plan:hover {
            background: #00c8b6;
            box-shadow: 0 0 30px rgba(0, 180, 161, 0.5);
        }

        /* ==================== FAQ ==================== */
        .faq-section {
            background: transparent;
        }

        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 180, 161, 0.3);
        }

        .faq-item.active {
            border-color: rgba(0, 180, 161, 0.5);
            box-shadow: 0 0 20px rgba(0, 180, 161, 0.1);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 24px;
            background: transparent;
            color: var(--text-main);
            font-size: 0.98rem;
            font-weight: 400;
            text-align: left;
            cursor: pointer;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            flex: 0 0 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: all 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            border-color: var(--primary);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px 24px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.75;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* ==================== 联系/CTA ==================== */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 180, 161, 0.1), rgba(0, 0, 0, 0.2));
            border-top: 1px solid var(--border);
        }

        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .cta-heading h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .cta-heading p {
            color: var(--text-muted);
            font-size: 0.96rem;
            margin-bottom: 28px;
            max-width: 460px;
        }

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

        .cta-contact-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .cta-contact-list li i {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(0, 180, 161, 0.1);
            border: 1px solid rgba(0, 180, 161, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.9rem;
        }

        .cta-form-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px;
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
        }

        .cta-form-card .form-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            font-weight: 400;
        }

        .cta-form-card .form-control {
            background: rgba(10, 18, 30, 0.7);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            color: var(--text-main);
            font-size: 0.9rem;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .cta-form-card .form-control:focus {
            background: rgba(10, 18, 30, 0.85);
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 180, 161, 0.15);
            color: var(--text-main);
        }

        .cta-form-card .form-control::placeholder {
            color: var(--text-weak);
        }

        .cta-form-card textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        .cta-form-card .btn-submit {
            width: 100%;
            padding: 14px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #06121F;
            font-size: 0.95rem;
            font-weight: 500;
            border: none;
            box-shadow: 0 0 16px rgba(0, 180, 161, 0.3);
            transition: all var(--transition);
            margin-top: 8px;
        }

        .cta-form-card .btn-submit:hover {
            background: #00c8b6;
            box-shadow: 0 0 30px rgba(0, 180, 161, 0.5);
            transform: translateY(-1px);
        }

        /* ==================== 页脚 ==================== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(0, 180, 161, 0.15);
            padding: 80px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid var(--border);
        }

        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), #00D4C2);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
            color: #06121F;
        }

        .footer-brand .logo .logo-text {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .footer-brand .brand-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 0.86rem;
            color: var(--text-muted);
            transition: all var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.86rem;
            color: var(--text-muted);
            margin-bottom: 14px;
        }

        .footer-contact li i {
            color: var(--primary);
            font-size: 0.9rem;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0 28px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom .copyright {
            font-size: 0.8rem;
            color: var(--text-weak);
        }

        .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }

        .footer-bottom .footer-links a {
            font-size: 0.8rem;
            color: var(--text-weak);
        }

        .footer-bottom .footer-links a:hover {
            color: var(--primary);
        }

        /* ==================== CTA底部带 ==================== */
        .bottom-cta {
            background: linear-gradient(135deg, rgba(0, 180, 161, 0.16), rgba(0, 0, 0, 0.2));
            border-bottom: 1px solid var(--border);
            padding: 64px 0;
            text-align: center;
        }

        .bottom-cta h2 {
            font-size: 1.6rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .bottom-cta p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 28px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ==================== 响应式 ==================== */
        @media (max-width: 1199.98px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .pricing-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }

            .pricing-card {
                padding: 28px 20px;
            }
        }

        @media (max-width: 991.98px) {
            section {
                padding: 72px 0;
            }

            .nav-links {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                background: rgba(8, 16, 30, 0.96);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border);
                padding: 16px 24px 24px;
                gap: 4px;
                z-index: 100;
            }

            .nav-links.open li a {
                display: block;
                padding: 14px 16px;
                font-size: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }

            .nav-links.open li a::after {
                display: none;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stats-item {
                border-left: none;
                border-bottom: 1px solid var(--border);
                padding: 12px;
            }

            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

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

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

            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }

            .pricing-card.featured {
                transform: none;
            }

            .cta-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767.98px) {
            section {
                padding: 56px 0;
            }

            .hero {
                padding: 80px 0 100px;
            }

            .hero h1 {
                font-size: 1.65rem;
            }

            .hero .hero-sub {
                font-size: 0.95rem;
            }

            .hero-actions .btn-primary-lg,
            .hero-actions .btn-outline-lg {
                width: 100%;
                justify-content: center;
            }

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

            .stats-item .stat-num {
                font-size: 1.5rem;
            }

            .features-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin-left: auto;
                margin-right: auto;
            }

            .news-item {
                flex-direction: column;
                padding: 18px;
            }

            .news-item .news-thumb {
                flex: auto;
                width: 100%;
                height: 160px;
            }

            .news-meta {
                flex-wrap: wrap;
            }

            .news-meta .read-more {
                margin-left: 0;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .cta-form-card {
                padding: 24px;
            }

            .section-head {
                margin-bottom: 40px;
            }

            .top-bar .top-right {
                display: none;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero {
                padding: 60px 0 80px;
            }

            .hero h1 {
                font-size: 1.5rem;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .stats-item .stat-num {
                font-size: 1.3rem;
            }

            .stats-item .stat-label {
                font-size: 0.75rem;
            }

            .feature-card {
                padding: 28px 20px;
            }

            .showcase-card {
                padding: 24px 20px;
            }

            .case-card {
                padding: 24px 20px;
            }

            .pricing-card {
                padding: 24px 20px;
            }

            .faq-question {
                padding: 18px 16px;
                font-size: 0.9rem;
            }

            .faq-answer {
                padding: 0 16px 18px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #00b4a0;
            --primary-light: #00c2b2;
            --primary-dark: #009688;
            --secondary: #0a1a2f;
            --accent: #caff50;
            --bg: #0e1c2b;
            --bg-elevated: #121c2c;
            --bg-card: rgba(255, 255, 255, 0.05);
            --bg-card-strong: rgba(255, 255, 255, 0.08);
            --border: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.16);
            --text-main: #eaf2f5;
            --text-sub: #93aab8;
            --text-weak: #60798a;
            --text-disabled: #3a4f5c;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
            --glow: 0 0 24px rgba(0, 181, 161, 0.4);
            --font-main: system-ui, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: linear-gradient(160deg, #0a1626 0%, #0e1c2b 55%, #091521 100%);
            color: var(--text-main);
            line-height: 1.8;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
            margin: 0 auto;
        }
        .bg-texture {
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }
        .section-pad {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 56px 0;
            }
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head .tagline {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            border: 1px solid rgba(0, 196, 178, 0.35);
            background: rgba(0, 196, 178, 0.1);
            padding: 4px 14px;
            border-radius: 32px;
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 500;
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 0.97rem;
            max-width: 620px;
            margin: 0 auto;
        }
        .btn {
            border-radius: 10px;
            padding: 10px 24px;
            font-weight: 500;
            font-size: 0.92rem;
            letter-spacing: 0.02em;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn-solid-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #05251f;
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 4px 16px rgba(0, 180, 160, 0.3);
        }
        .btn-solid-primary:hover {
            color: #02211a;
            box-shadow: var(--glow);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #00bfa8 0%, #00d6c4 100%);
        }
        .btn-outline-primary {
            background: transparent;
            color: var(--primary-light);
            border-color: rgba(0, 196, 178, 0.5);
        }
        .btn-outline-primary:hover {
            background: rgba(0, 196, 178, 0.1);
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-nav {
            padding: 7px 18px;
            font-size: 0.84rem;
            border-radius: 8px;
        }
        .btn-nav.btn-solid-primary {
            background: var(--primary);
            color: #05251f;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .btn-nav.btn-solid-primary:hover {
            box-shadow: var(--glow);
        }
        .btn-nav.btn-outline-primary {
            background: transparent;
            color: var(--text-sub);
            border-color: var(--border-light);
        }
        .btn-nav.btn-outline-primary:hover {
            color: var(--primary-light);
            border-color: var(--primary);
            background: rgba(0, 196, 178, 0.08);
        }
        .badge-soft {
            display: inline-block;
            background: rgba(0, 196, 178, 0.12);
            color: var(--primary-light);
            border: 1px solid rgba(0, 196, 178, 0.3);
            border-radius: 6px;
            font-size: 0.78rem;
            font-weight: 400;
            padding: 2px 10px;
            line-height: 1.5;
        }
        .badge-accent {
            display: inline-block;
            background: rgba(202, 255, 80, 0.12);
            color: var(--accent);
            border: 1px solid rgba(202, 255, 80, 0.3);
            border-radius: 6px;
            font-size: 0.78rem;
            font-weight: 400;
            padding: 2px 10px;
        }
        /* ===================== NAV ===================== */
        .site-header {
            position: relative;
            z-index: 100;
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 20px 24px;
            background: rgba(8, 18, 30, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .main-nav.scrolled {
            background: rgba(6, 14, 24, 0.92);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #05251f;
            font-size: 0.8rem;
            font-weight: 700;
            border-radius: 9px;
            letter-spacing: 0.02em;
        }
        .logo-text {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 30px;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            position: relative;
            color: var(--text-sub);
            font-size: 0.92rem;
            font-weight: 400;
            letter-spacing: 0.02em;
            padding: 6px 2px;
            white-space: nowrap;
            transition: color 0.25s ease;
        }
        .nav-links li a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.25s ease;
            border-radius: 2px;
        }
        .nav-links li a:hover {
            color: var(--text-main);
        }
        .nav-links li a:hover::after {
            transform: scaleX(1);
        }
        .nav-links li a.active {
            color: var(--text-main);
            font-weight: 500;
        }
        .nav-links li a.active::after {
            transform: scaleX(1);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 1.3rem;
            cursor: pointer;
            padding: 4px;
        }
        @media (max-width: 992px) {
            .main-nav {
                flex-wrap: wrap;
                padding: 16px 20px;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                background: rgba(8, 18, 30, 0.96);
                border: 1px solid var(--border);
                border-radius: 12px;
                padding: 18px 20px;
                margin-top: 12px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-cta {
                margin-left: 0;
                gap: 8px;
            }
            .nav-cta .btn-nav.btn-outline-primary {
                display: none;
            }
            .hamburger {
                display: block;
                margin-left: auto;
            }
        }
        @media (max-width: 576px) {
            .logo-text {
                font-size: 0.95rem;
            }
        }
        /* ===================== HERO ===================== */
        .hero {
            position: relative;
            padding: 110px 0 90px;
            background-image: linear-gradient(180deg, rgba(8, 14, 25, 0.55) 0%, rgba(10, 22, 35, 0.88) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-sub);
            margin-bottom: 20px;
        }
        .hero-breadcrumb a {
            color: var(--text-sub);
        }
        .hero-breadcrumb a:hover {
            color: var(--primary-light);
        }
        .hero-breadcrumb i {
            font-size: 0.6rem;
            color: var(--text-weak);
        }
        .hero h1 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .hero h1 .highlight {
            color: var(--primary-light);
            text-shadow: 0 0 30px rgba(0, 200, 185, 0.3);
        }
        .hero-sub {
            font-size: 1.02rem;
            color: var(--text-sub);
            max-width: 520px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 10px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 34px;
        }
        @media (max-width: 768px) {
            .hero {
                padding: 70px 0 56px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-meta {
                flex-direction: column;
                gap: 8px;
            }
        }
        /* ===================== OVERVIEW ===================== */
        .overview {
            padding: 96px 0;
            background: transparent;
        }
        .overview-grid {
            display: grid;
            grid-template-columns: 1.05fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .overview-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            background: var(--bg-card);
        }
        .overview-media img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .overview-media:hover img {
            transform: scale(1.03);
        }
        .overview-content .section-label {
            font-size: 0.8rem;
            color: var(--primary-light);
            letter-spacing: 0.1em;
            text-transform: uppercase;
            margin-bottom: 10px;
            display: block;
        }
        .overview-content h2 {
            font-size: clamp(1.4rem, 2.4vw, 1.9rem);
            font-weight: 500;
            line-height: 1.4;
            margin-bottom: 18px;
        }
        .overview-content p {
            color: var(--text-sub);
            font-size: 0.96rem;
            margin-bottom: 20px;
        }
        .overview-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }
        .overview-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            color: var(--text-sub);
            font-size: 0.94rem;
            border-bottom: 1px solid var(--border);
        }
        .overview-list li:last-child {
            border-bottom: none;
        }
        .overview-list li i {
            color: var(--primary);
            margin-top: 6px;
            font-size: 0.9rem;
            width: 18px;
            text-align: center;
            flex-shrink: 0;
        }
        .overview-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary-light);
            font-size: 0.9rem;
            font-weight: 500;
            transition: gap 0.2s ease;
        }
        .overview-link:hover {
            gap: 14px;
            color: var(--primary-light);
        }
        @media (max-width: 900px) {
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }
        /* ===================== FEATURES ===================== */
        .features {
            padding: 96px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 12px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
            height: 100%;
        }
        .feature-card:hover {
            border-color: rgba(255, 255, 255, 0.22);
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(0, 180, 160, 0.18), rgba(0, 180, 160, 0.05));
            border: 1px solid rgba(0, 180, 160, 0.3);
            color: var(--primary-light);
            font-size: 1.2rem;
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 1.12rem;
            font-weight: 500;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--text-sub);
            font-size: 0.92rem;
            line-height: 1.7;
            margin: 0;
        }
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===================== PLATFORM ===================== */
        .platform {
            padding: 96px 0;
            background: transparent;
        }
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 16px;
        }
        .platform-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px 20px;
            text-align: center;
            transition: transform 0.25s ease, border-color 0.25s ease;
            backdrop-filter: blur(8px);
            min-height: 160px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .platform-card:hover {
            border-color: rgba(0, 196, 178, 0.4);
            transform: translateY(-4px);
        }
        .platform-card .p-icon {
            font-size: 1.9rem;
            margin-bottom: 14px;
            color: var(--primary-light);
            background: rgba(0, 196, 178, 0.1);
            width: 64px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid rgba(0, 196, 178, 0.2);
        }
        .platform-card h3 {
            font-size: 1.02rem;
            font-weight: 500;
            margin-bottom: 6px;
        }
        .platform-card p {
            color: var(--text-sub);
            font-size: 0.85rem;
            line-height: 1.5;
            margin: 0;
        }
        @media (max-width: 992px) {
            .platform-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .platform-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===================== PROCESS ===================== */
        .process {
            padding: 96px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 20px;
            counter-reset: step;
        }
        .process-step {
            position: relative;
            padding: 30px 22px 26px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            text-align: center;
            transition: transform 0.25s ease, border-color 0.25s ease;
        }
        .process-step::before {
            counter-increment: step;
            content: "0" counter(step);
            display: block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            background: rgba(0, 196, 178, 0.1);
            border: 1px solid rgba(0, 196, 178, 0.25);
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .process-step h3 {
            font-size: 1rem;
            font-weight: 500;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.86rem;
            color: var(--text-sub);
            line-height: 1.6;
            margin: 0;
        }
        .process-step:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 196, 178, 0.35);
        }
        @media (max-width: 992px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }
        /* ===================== INTERNAL LINKS ===================== */
        .internal-links {
            padding: 96px 0;
            background: transparent;
        }
        .internal-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .internal-card {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 40px 36px;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
            backdrop-filter: blur(12px);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
            min-height: 220px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .internal-card::after {
            content: "";
            position: absolute;
            right: -30px;
            top: -30px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(0, 196, 178, 0.08);
            pointer-events: none;
        }
        .internal-card:nth-child(2)::after {
            background: rgba(202, 255, 80, 0.07);
        }
        .internal-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.25);
            box-shadow: var(--shadow);
        }
        .internal-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 196, 178, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--primary-light);
            border: 1px solid rgba(0, 196, 178, 0.25);
            margin-bottom: 22px;
        }
        .internal-card:nth-child(2) .internal-icon {
            background: rgba(202, 255, 80, 0.1);
            color: var(--accent);
            border-color: rgba(202, 255, 80, 0.2);
        }
        .internal-card h3 {
            font-size: 1.18rem;
            font-weight: 500;
            margin-bottom: 10px;
        }
        .internal-card p {
            color: var(--text-sub);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 85%;
        }
        .internal-link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary-light);
            font-size: 0.9rem;
            font-weight: 500;
            transition: gap 0.2s ease;
        }
        .internal-card:nth-child(2) .internal-link-arrow {
            color: var(--accent);
        }
        .internal-link-arrow:hover {
            gap: 14px;
            color: inherit;
        }
        @media (max-width: 768px) {
            .internal-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===================== FAQ ===================== */
        .faq {
            padding: 96px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.03);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.25s ease;
        }
        .faq-item.open {
            border-color: rgba(0, 196, 178, 0.4);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 22px;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 0.96rem;
            font-weight: 500;
            text-align: left;
            cursor: pointer;
            transition: background 0.2s ease;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .faq-question .faq-icon {
            color: var(--primary-light);
            font-size: 0.85rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
            color: var(--text-sub);
            font-size: 0.92rem;
            line-height: 1.75;
            border-top: 1px solid transparent;
        }
        .faq-item.open .faq-answer-inner {
            border-top-color: var(--border);
            padding-top: 14px;
        }
        /* ===================== CTA ===================== */
        .cta-contact {
            padding: 96px 0;
            background: transparent;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(0, 180, 160, 0.1), rgba(10, 26, 47, 0.4)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .cta-box::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(0, 196, 178, 0.12), transparent 60%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: clamp(1.4rem, 2.6vw, 2rem);
            font-weight: 500;
            margin-bottom: 14px;
            position: relative;
        }
        .cta-box p {
            color: var(--text-sub);
            font-size: 0.98rem;
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
            position: relative;
        }
        .cta-contact-info {
            margin-top: 36px;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 24px;
            color: var(--text-sub);
            font-size: 0.88rem;
            position: relative;
        }
        .cta-contact-info i {
            color: var(--primary-light);
            margin-right: 6px;
        }
        @media (max-width: 768px) {
            .cta-box {
                padding: 42px 24px;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }
        /* ===================== FOOTER ===================== */
        .site-footer {
            background: #050a12;
            border-top: 1px solid rgba(0, 196, 178, 0.12);
            padding-top: 60px;
            color: var(--text-sub);
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .brand-desc {
            font-size: 0.9rem;
            line-height: 1.8;
            color: var(--text-weak);
            max-width: 300px;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: var(--text-sub);
            font-size: 0.88rem;
            transition: color 0.2s ease;
        }
        .footer-col ul a:hover {
            color: var(--primary-light);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-sub);
            font-size: 0.88rem;
        }
        .footer-contact i {
            color: var(--primary-light);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--text-weak);
        }
        .footer-bottom .copyright {
            color: var(--text-weak);
        }
        .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-links a {
            color: var(--text-weak);
            font-size: 0.82rem;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 992px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 576px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 26px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
        }
        /* ===================== ANIMATION ===================== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .fade-up {
                opacity: 1;
                transform: none;
                transition: none;
            }
        }

/* roulang page: article */
:root {
            --primary: #00B4A0;
            --primary-light: #00E0C8;
            --primary-dark: #008C7F;
            --primary-glow: rgba(0, 181, 161, 0.35);
            --accent: #CAFF50;
            --secondary: #0B1826;
            --secondary-deep: #050A12;
            --bg-body: #081420;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.06);
            --bg-input: #121C2C;
            --text-main: #EAF2F5;
            --text-sub: #93AAB8;
            --text-weak: #60798A;
            --border: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.14);
            --radius-xl: 20px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(0, 181, 161, 0.4);
            --font-base: system-ui, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
        }

        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-base);
            background: linear-gradient(160deg, #0B1826 0%, #081420 45%, #050A12 100%);
            color: var(--text-main);
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 14px;
            letter-spacing: 0.02em;
            padding: 10px 22px;
            border: 1px solid transparent;
            text-decoration: none;
            transition: all var(--transition-fast);
            line-height: 1.6;
        }

        .btn-lg {
            padding: 12px 30px;
            font-size: 15px;
            border-radius: var(--radius-md);
        }

        .btn-solid-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #042B26;
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 4px 16px rgba(0, 180, 160, 0.25);
        }

        .btn-solid-primary:hover {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
            color: #021A16;
            box-shadow: var(--shadow-glow);
            transform: translateY(-1px);
        }

        .btn-outline-primary {
            border-color: rgba(0, 180, 160, 0.5);
            color: var(--primary);
            background: transparent;
        }

        .btn-outline-primary:hover {
            border-color: var(--primary);
            background: rgba(0, 180, 160, 0.12);
            color: var(--primary-light);
            box-shadow: 0 0 16px rgba(0, 180, 160, 0.15);
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 20, 32, 0.65);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(8, 20, 32, 0.92);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 0;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-right: 8px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: #042B26;
            box-shadow: 0 0 18px rgba(0, 180, 160, 0.3);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 600;
            letter-spacing: 0.03em;
            color: var(--text-main);
            white-space: nowrap;
        }

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

        .nav-links li a {
            position: relative;
            display: inline-block;
            padding: 8px 14px;
            font-size: 15px;
            color: var(--text-sub);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
        }

        .nav-links li a:hover {
            color: var(--primary-light);
            background: rgba(0, 180, 160, 0.06);
        }

        .nav-links li a.active {
            color: var(--text-main);
            font-weight: 500;
        }

        .nav-links li a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            box-shadow: 0 0 12px var(--primary-glow);
        }

        .nav-cta {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-nav {
            padding: 7px 18px;
            font-size: 14px;
            border-radius: var(--radius-sm);
        }

        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 20px;
            color: var(--text-main);
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .article-section {
            position: relative;
            padding: 150px 0 90px;
            background: url('/assets/images/backpic/back-1.webp') center top / cover no-repeat;
        }

        .article-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(8, 20, 32, 0.9) 0%, rgba(8, 20, 32, 0.96) 50%, #081420 100%);
        }

        .article-section .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding: 16px 0;
            color: var(--text-weak);
            font-size: 13px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 40px;
        }

        .breadcrumb-bar a {
            color: var(--text-sub);
            transition: color var(--transition-fast);
        }

        .breadcrumb-bar a:hover {
            color: var(--primary);
        }

        .breadcrumb-bar .separator {
            font-size: 10px;
            color: var(--text-weak);
            opacity: 0.7;
        }

        .breadcrumb-bar .current {
            color: var(--text-sub);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 260px;
            display: inline-block;
            vertical-align: bottom;
        }

        .breadcrumb-bar .current-title {
            max-width: 320px;
        }

        .article-wrapper {
            max-width: 900px;
            margin: 0 auto;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: 48px 56px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .article-header {
            text-align: center;
            margin-bottom: 36px;
        }

        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 100px;
            background: rgba(0, 180, 160, 0.12);
            border: 1px solid rgba(0, 180, 160, 0.3);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 22px;
        }

        .article-title {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 22px;
            letter-spacing: 0.01em;
        }

        .article-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 24px;
            color: var(--text-weak);
            font-size: 13px;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

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

        .article-meta i {
            color: var(--primary);
            font-size: 12px;
        }

        .article-featured {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            margin-bottom: 36px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .article-featured img {
            width: 100%;
            height: auto;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .article-body {
            font-size: 1rem;
            line-height: 1.85;
            color: #D3E2E9;
        }

        .article-body p {
            margin-bottom: 1.5em;
        }

        .article-body h2 {
            font-size: 1.45rem;
            font-weight: 600;
            margin: 2em 0 0.8em;
            color: var(--text-main);
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 1.18rem;
            font-weight: 600;
            margin: 1.6em 0 0.6em;
            color: var(--text-main);
        }

        .article-body img {
            max-width: 100%;
            border-radius: var(--radius-md);
            margin: 1.5em 0;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

        .article-body a:hover {
            color: var(--primary-light);
        }

        .article-body blockquote {
            border-left: 3px solid var(--primary);
            padding: 18px 24px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-sub);
            margin: 1.8em 0;
            font-style: italic;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.4em;
            margin-bottom: 1.5em;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: 0.45em;
        }

        .article-body code {
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }

        .article-empty {
            text-align: center;
            padding: 80px 32px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px dashed var(--border-light);
            border-radius: var(--radius-lg);
        }

        .article-empty .icon {
            font-size: 48px;
            color: var(--text-weak);
            margin-bottom: 20px;
        }

        .article-empty h2 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .article-empty p {
            color: var(--text-sub);
            margin-bottom: 28px;
            max-width: 420px;
            margin-left: auto;
            margin-right: auto;
        }

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .tags-label {
            color: var(--text-weak);
            font-size: 14px;
            margin-right: 4px;
        }

        .tags-label i {
            color: var(--primary);
            margin-right: 4px;
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 100px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            color: var(--text-sub);
            font-size: 13px;
            text-decoration: none;
            transition: all var(--transition-fast);
        }

        .tag-item:hover {
            color: var(--primary-light);
            border-color: rgba(0, 180, 160, 0.4);
            background: rgba(0, 180, 160, 0.08);
        }

        .related-section {
            padding: 90px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .related-section .section-title {
            text-align: center;
            font-size: clamp(1.4rem, 2.5vw, 1.8rem);
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .related-section .section-sub {
            text-align: center;
            color: var(--text-sub);
            margin-bottom: 44px;
            font-size: 15px;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 180, 160, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        }

        .related-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .related-card .card-body {
            padding: 26px 28px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.45;
        }

        .related-card h3 a {
            color: var(--text-main);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .related-card h3 a:hover {
            color: var(--primary-light);
        }

        .related-card p {
            color: var(--text-sub);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .related-card .card-link {
            color: var(--primary);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition-fast), gap var(--transition-fast);
        }

        .related-card .card-link:hover {
            color: var(--primary-light);
            gap: 10px;
        }

        .cta-section {
            position: relative;
            padding: 100px 0;
            background: linear-gradient(135deg, rgba(0, 180, 160, 0.1), rgba(0, 0, 0, 0.25)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            text-align: center;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(8, 20, 32, 0.82);
        }

        .cta-inner {
            position: relative;
            z-index: 1;
        }

        .cta-inner .cta-title {
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: var(--text-sub);
            max-width: 620px;
            margin: 0 auto 36px;
            font-size: 15px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .site-footer {
            background: #050A12;
            padding: 64px 0 0;
            border-top: 1px solid rgba(0, 180, 160, 0.15);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid var(--border);
        }

        .footer-brand .logo {
            margin-bottom: 18px;
        }

        .brand-desc {
            color: var(--text-sub);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul a {
            color: var(--text-sub);
            font-size: 0.9rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul a:hover {
            color: var(--primary-light);
        }

        .footer-contact li {
            color: var(--text-sub);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact i {
            width: 18px;
            color: var(--primary);
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            padding: 22px 0;
            color: var(--text-weak);
            font-size: 13px;
        }

        .footer-links {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 4px;
        }

        .footer-links a {
            color: var(--text-weak);
            text-decoration: none;
            font-size: 13px;
            padding: 4px 12px;
            border-radius: 4px;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--primary-light);
        }

        @media (max-width: 991.98px) {
            .main-nav {
                padding: 12px 0;
            }

            .nav-links {
                position: fixed;
                top: 63px;
                right: 0;
                width: 280px;
                background: rgba(10, 20, 35, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 0 0 0 var(--radius-lg);
                flex-direction: column;
                align-items: stretch;
                padding: 24px;
                gap: 6px;
                transform: translateX(105%);
                transition: transform var(--transition-base);
                border-left: 1px solid var(--border);
                box-shadow: -12px 12px 40px rgba(0, 0, 0, 0.35);
            }

            .nav-links.show {
                transform: translateX(0);
            }

            .nav-links li a {
                display: block;
                padding: 12px 16px;
                font-size: 15px;
                border-radius: var(--radius-sm);
            }

            .nav-links li a.active::after {
                left: 16px;
                right: auto;
                width: 24px;
                bottom: 8px;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: block;
                margin-left: auto;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .article-wrapper {
                padding: 40px 32px;
            }

            .article-section {
                padding: 120px 0 64px;
            }

            .cta-section {
                padding: 80px 0;
            }
        }

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

            .logo-text {
                font-size: 16px;
            }

            .breadcrumb-bar {
                gap: 8px;
                font-size: 12px;
                margin-bottom: 28px;
            }

            .breadcrumb-bar .current {
                max-width: 160px;
            }

            .article-wrapper {
                padding: 28px 20px;
                border-radius: var(--radius-lg);
            }

            .article-title {
                font-size: 1.4rem;
                line-height: 1.45;
            }

            .article-meta {
                gap: 14px;
                flex-direction: column;
                align-items: center;
            }

            .article-meta span {
                font-size: 12px;
            }

            .article-body {
                font-size: 0.95rem;
                line-height: 1.8;
            }

            .article-body h2 {
                font-size: 1.25rem;
            }

            .article-body h3 {
                font-size: 1.08rem;
            }

            .article-tags {
                gap: 8px;
            }

            .article-tags .tag-item {
                font-size: 12px;
                padding: 4px 12px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .footer-links {
                justify-content: center;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
                width: 100%;
            }

            .cta-actions .btn {
                width: 100%;
                max-width: 340px;
            }

            .related-section {
                padding: 64px 0;
            }

            .related-section .section-sub {
                margin-bottom: 28px;
            }
        }

        @media (max-width: 520px) {
            .logo {
                gap: 8px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }

            .logo-text {
                font-size: 15px;
            }

            .nav-links {
                width: 240px;
            }

            .article-wrapper {
                padding: 24px 16px;
            }

            .article-category {
                font-size: 12px;
                padding: 5px 12px;
            }

            .article-title {
                font-size: 1.25rem;
            }

            .article-section {
                padding: 104px 0 48px;
            }

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

/* roulang page: category2 */
:root {
            --primary: #00B4A0;
            --primary-light: #00C2B2;
            --secondary: #0A1A2F;
            --secondary-deep: #0E1C2B;
            --accent: #CAFF50;
            --bg-main: linear-gradient(160deg, #0A1A2F 0%, #0B1C31 50%, #0E2238 100%);
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.1);
            --text-main: #EAF2F5;
            --text-sub: #93AAB8;
            --text-weak: #60798A;
            --border-light: rgba(255, 255, 255, 0.1);
            --border-bright: rgba(255, 255, 255, 0.2);
            --primary-glow: rgba(0, 181, 161, 0.4);
            --radius-card: 18px;
            --radius-btn: 10px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.08);
            --font-stack: system-ui, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-main);
            background-attachment: fixed;
            color: var(--text-main);
            line-height: 1.8;
            font-size: 0.95rem;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding: 100px 0;
        }
        .section-sm {
            padding: 64px 0;
        }

        .text-sub {
            color: var(--text-sub);
        }
        .text-weak {
            color: var(--text-weak);
        }
        .text-primary-custom {
            color: var(--primary);
        }
        .text-accent {
            color: var(--accent);
        }

        /* ===== 按钮 ===== */
        .btn-primary-custom {
            --bs-btn-color: #07131C;
            --bs-btn-bg: var(--primary);
            --bs-btn-border-color: var(--primary);
            --bs-btn-hover-color: #07131C;
            --bs-btn-hover-bg: #20C4B2;
            --bs-btn-hover-border-color: #20C4B2;
            --bs-btn-focus-shadow-rgb: 0, 180, 160;
            --bs-btn-active-color: #07131C;
            --bs-btn-active-bg: var(--primary);
            --bs-btn-active-border-color: var(--primary);
            border-radius: var(--radius-btn);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0.8rem 2rem;
            box-shadow: 0 4px 22px rgba(0, 180, 161, 0.25);
            transition: box-shadow 0.3s ease, transform 0.2s ease;
        }
        .btn-primary-custom:hover {
            box-shadow: 0 6px 32px var(--primary-glow);
            transform: translateY(-2px);
        }

        .btn-outline-primary-custom {
            --bs-btn-color: var(--primary);
            --bs-btn-border-color: rgba(0, 180, 161, 0.7);
            --bs-btn-hover-color: var(--primary-light);
            --bs-btn-hover-bg: rgba(0, 180, 161, 0.08);
            --bs-btn-hover-border-color: var(--primary);
            --bs-btn-active-color: var(--primary);
            --bs-btn-active-bg: rgba(0, 180, 161, 0.15);
            --bs-btn-active-border-color: var(--primary);
            border-radius: var(--radius-btn);
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 0.8rem 2rem;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: rgba(11, 22, 37, 0.6);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(8, 16, 28, 0.88);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            gap: 30px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, #007E78 100%);
            color: #07131C;
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.04em;
            border-radius: 12px;
            box-shadow: 0 4px 18px rgba(0, 180, 161, 0.3);
        }
        .logo-text {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-main);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo:hover {
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 38px;
            margin-bottom: 0;
        }
        .nav-links li a {
            color: var(--text-sub);
            font-size: 0.92rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            padding: 8px 0;
            position: relative;
            transition: color 0.25s ease;
        }
        .nav-links li a::after {
            content: "";
            display: block;
            position: absolute;
            left: 0;
            bottom: 2px;
            width: 100%;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        .nav-links li a:hover {
            color: var(--text-main);
        }
        .nav-links li a:hover::after {
            transform: scaleX(1);
        }
        .nav-links li a.active {
            color: var(--text-main);
        }
        .nav-links li a.active::after {
            transform: scaleX(1);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .btn-nav {
            padding: 0.55rem 1.3rem;
            font-size: 0.85rem;
            font-weight: 500;
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
        }
        .btn-outline-primary {
            border-color: rgba(0, 180, 161, 0.6);
            color: var(--primary) !important;
        }
        .btn-outline-primary:hover {
            background: rgba(0, 180, 161, 0.12);
            border-color: var(--primary);
            color: var(--primary-light) !important;
        }
        .btn-solid-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #07131C !important;
            font-weight: 600;
        }
        .btn-solid-primary:hover {
            background: #20C4B2;
            border-color: #20C4B2;
            box-shadow: 0 0 24px rgba(0, 180, 161, 0.35);
        }

        .hamburger {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border-light);
            color: var(--text-main);
            font-size: 1.2rem;
            cursor: pointer;
            background: transparent;
            transition: background 0.2s ease;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== Hero 区域 ===== */
        .page-hero {
            background-image: linear-gradient(180deg, rgba(8, 14, 25, 0.55) 0%, rgba(8, 14, 25, 0.88) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 100px 0 90px;
            border-bottom: 1px solid var(--border-light);
            position: relative;
        }
        .page-hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 140px;
            background: linear-gradient(180deg, rgba(10, 20, 31, 0) 0%, #0A1A2F 90%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 180, 161, 0.15);
            border: 1px solid rgba(0, 180, 161, 0.35);
            border-radius: 50px;
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 6px 16px;
            margin-bottom: 24px;
        }
        .hero-badge i {
            font-size: 0.8rem;
        }

        .page-hero h1 {
            font-size: clamp(1.9rem, 4vw, 2.7rem);
            font-weight: 600;
            line-height: 1.36;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            max-width: 720px;
        }
        .page-hero h1 span {
            color: var(--primary);
        }
        .page-hero .lead {
            font-size: clamp(1rem, 1.6vw, 1.18rem);
            color: var(--text-sub);
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.9;
        }

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

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin-top: 48px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-meta-item {
            display: flex;
            flex-direction: column;
        }
        .hero-meta-item strong {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
        }
        .hero-meta-item span {
            font-size: 0.8rem;
            color: var(--text-sub);
        }

        /* ===== 支持内容分区 ===== */
        .support-intro {
            padding: 40px 0 20px;
        }

        .section-header {
            margin-bottom: 56px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            color: var(--primary);
            background: rgba(0, 180, 161, 0.1);
            border: 1px solid rgba(0, 180, 161, 0.2);
            border-radius: 6px;
            padding: 4px 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .section-header h2 {
            font-size: clamp(1.35rem, 2.5vw, 1.9rem);
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 14px;
        }
        .section-header p {
            color: var(--text-sub);
            max-width: 640px;
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 左图右文：服务流程版 ===== */
        .service-showcase {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 100px 0;
        }

        .showcase-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .showcase-media {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            position: relative;
        }
        .showcase-media img {
            width: 100%;
            min-height: 340px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .showcase-media:hover img {
            transform: scale(1.03);
        }
        .showcase-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(200deg, rgba(0, 180, 161, 0.12) 0%, rgba(10, 20, 35, 0.2) 60%);
            pointer-events: none;
        }

        .showcase-content .content-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 180, 161, 0.1);
            border: 1px solid rgba(0, 180, 161, 0.25);
            color: var(--primary);
            border-radius: 50px;
            padding: 5px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
        }
        .showcase-content h2 {
            font-size: clamp(1.4rem, 2.3vw, 1.9rem);
            font-weight: 600;
            line-height: 1.45;
            margin-bottom: 20px;
        }
        .showcase-content p {
            color: var(--text-sub);
            margin-bottom: 28px;
            font-size: 0.95rem;
        }

        .process-steps {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .process-step {
            display: flex;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: relative;
        }
        .process-step:last-child {
            border-bottom: none;
        }
        .step-num {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(0, 180, 161, 0.14);
            border: 1px solid rgba(0, 180, 161, 0.3);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.95rem;
        }
        .step-body h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .step-body p {
            font-size: 0.85rem;
            color: var(--text-sub);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ===== 场景网格 ===== */
        .scene-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            transition: transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .scene-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), transparent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }
        .scene-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-5px);
            box-shadow: var(--shadow-card);
            border-color: var(--border-bright);
        }
        .scene-card:hover::before {
            transform: scaleX(1);
        }
        .scene-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 180, 161, 0.14);
            border: 1px solid rgba(0, 180, 161, 0.25);
            border-radius: 14px;
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        .scene-card h3 {
            font-size: 1.08rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .scene-card p {
            color: var(--text-sub);
            font-size: 0.88rem;
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ===== 图形数据带 ===== */
        .stats-band {
            background: linear-gradient(90deg, rgba(0, 180, 161, 0.08), rgba(0, 180, 161, 0.02));
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 64px 0;
        }
        .stat-item {
            text-align: center;
            padding: 26px 16px;
            border-left: 1px solid rgba(255, 255, 255, 0.06);
        }
        .stat-item:first-child {
            border-left: none;
        }
        .stat-item strong {
            font-size: 1.6rem;
            font-weight: 600;
            color: var(--text-main);
            display: block;
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }
        .stat-item strong i {
            color: var(--primary);
            font-style: normal;
            font-size: 1.1rem;
            margin-left: 2px;
        }
        .stat-item span {
            color: var(--text-sub);
            font-size: 0.85rem;
        }

        /* ===== 常见问题 ===== */
        .faq-block {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-light);
            border-radius: 14px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item.active {
            border-color: rgba(0, 180, 161, 0.4);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 22px;
            cursor: pointer;
            user-select: none;
        }
        .faq-question span {
            font-weight: 600;
            font-size: 0.98rem;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--primary);
            font-size: 0.85rem;
            transition: transform 0.3s ease, background 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #07131C;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer p {
            padding: 0 22px 22px;
            color: var(--text-sub);
            font-size: 0.9rem;
            line-height: 1.9;
            margin: 0;
        }
        .faq-item.active .faq-answer {
            max-height: 240px;
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: rgba(255, 255, 255, 0.03);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 90px 0;
            text-align: center;
        }
        .cta-inner {
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 600;
            margin-bottom: 16px;
        }
        .cta-inner p {
            color: var(--text-sub);
            font-size: 0.98rem;
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #050A12;
            border-top: 1px solid rgba(0, 180, 161, 0.25);
            padding: 70px 0 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 50px;
            padding-bottom: 54px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .brand-desc {
            color: var(--text-sub);
            font-size: 0.85rem;
            line-height: 1.8;
            max-width: 340px;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 18px;
            color: var(--text-main);
        }
        .footer-col ul {
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-sub);
            font-size: 0.85rem;
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-sub);
            font-size: 0.85rem;
        }
        .footer-contact li i {
            color: var(--primary);
            width: 18px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 22px 0;
        }
        .copyright {
            color: var(--text-weak);
            font-size: 0.8rem;
        }
        .footer-links {
            display: flex;
            gap: 24px;
        }
        .footer-links a {
            color: var(--text-weak);
            font-size: 0.8rem;
        }
        .footer-links a:hover {
            color: var(--primary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .nav-links {
                gap: 26px;
            }
            .nav-cta {
                gap: 8px;
            }
            .btn-nav {
                padding: 0.5rem 1rem;
                font-size: 0.8rem;
            }
            .logo-text {
                font-size: 1rem;
            }
        }

        @media (max-width: 991.98px) {
            .main-nav {
                flex-wrap: wrap;
                padding: 14px 0;
            }
            .hamburger {
                display: flex;
            }
            .nav-links {
                order: 3;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                background: rgba(10, 20, 35, 0.95);
                border-radius: 14px;
                padding: 12px 16px;
                margin-top: 12px;
                display: none;
                border: 1px solid var(--border-light);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links li a {
                display: block;
                padding: 10px 8px;
                font-size: 0.95rem;
                border-radius: 8px;
            }
            .nav-links li a.active {
                background: rgba(0, 180, 161, 0.1);
                color: var(--primary);
            }
            .nav-links li a.active::after {
                display: none;
            }
            .nav-cta {
                order: 2;
                margin-left: auto;
                margin-right: 10px;
            }
            .btn-nav {
                display: none;
            }
            .nav-cta .btn-solid-primary {
                display: inline-flex;
            }
            .nav-cta .btn-outline-primary {
                display: none;
            }

            .showcase-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .showcase-media img {
                min-height: 240px;
            }

            .stats-band .row {
                --bs-gutter-y: 16px;
            }
            .stat-item {
                border-left: none;
                padding: 14px 8px;
            }
            .stat-item strong {
                font-size: 1.2rem;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 60px 0;
            }
            .page-hero {
                padding: 66px 0 60px;
            }
            .page-hero h1 {
                font-size: 1.55rem;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-meta {
                gap: 16px;
                justify-content: space-between;
            }
            .hero-meta-item strong {
                font-size: 1rem;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                gap: 14px;
            }

            .faq-item.active .faq-answer {
                max-height: 400px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }
            .nav-cta .btn-solid-primary {
                display: none;
            }
            .page-hero {
                padding: 50px 0 46px;
            }
            .page-hero h1 {
                font-size: 1.35rem;
                line-height: 1.45;
            }
            .page-hero .lead {
                font-size: 0.92rem;
            }
            .hero-meta {
                align-items: flex-start;
            }
            .scene-card {
                padding: 24px 18px;
            }
            .showcase-content p {
                font-size: 0.9rem;
            }
            .process-step {
                gap: 12px;
            }
            .step-num {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #00B4A0;
            --primary-dark: #009688;
            --primary-glow: rgba(0, 180, 161, 0.4);
            --accent: #CAFF50;
            --bg-dark: #0B1B2B;
            --bg-deep: #050A12;
            --bg-soft: #101E30;
            --card-bg: rgba(255, 255, 255, 0.05);
            --card-border: rgba(255, 255, 255, 0.10);
            --border: rgba(255, 255, 255, 0.08);
            --text-main: #EAF2F5;
            --text-sub: #93AAB8;
            --text-weak: #60798A;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
            --glow: 0 0 24px rgba(0, 181, 161, 0.4);
            --transition: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: system-ui, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text-main);
            background: radial-gradient(ellipse at 20% 0%, #142A44 0%, var(--bg-dark) 38%, var(--bg-deep) 100%);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: #00d4bf;
        }

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 90px 0;
            position: relative;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            letter-spacing: 0.14em;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(0, 180, 161, 0.12);
            border: 1px solid rgba(0, 180, 161, 0.3);
            border-radius: 999px;
            padding: 6px 16px;
            margin-bottom: 18px;
            font-weight: 500;
        }

        .section-title {
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 500;
            line-height: 1.35;
            margin: 0 0 14px;
            letter-spacing: 0.01em;
        }

        .section-desc {
            color: var(--text-sub);
            font-size: 1rem;
            max-width: 720px;
            margin-bottom: 44px;
            line-height: 1.8;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 12px 28px;
            border: 1px solid transparent;
            transition: all var(--transition);
            text-decoration: none;
        }

        .btn-solid-primary {
            background: var(--primary);
            color: #06202A;
            border-color: var(--primary);
            box-shadow: 0 4px 18px rgba(0, 180, 161, 0.25);
        }

        .btn-solid-primary:hover {
            background: #00c9b4;
            border-color: #00d4bf;
            color: #06202A;
            transform: translateY(-2px);
            box-shadow: var(--glow);
        }

        .btn-outline-primary {
            background: transparent;
            color: var(--primary);
            border-color: rgba(0, 180, 161, 0.5);
        }

        .btn-outline-primary:hover {
            background: rgba(0, 180, 161, 0.1);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 0 18px rgba(0, 180, 161, 0.15);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-main);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 15, 25, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(6, 13, 22, 0.92);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            padding: 0 24px;
            max-width: 1340px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--text-main);
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), #007d6e);
            color: #fff;
            font-size: 0.9rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            border-radius: 12px;
            box-shadow: 0 4px 16px rgba(0, 180, 161, 0.35);
        }

        .logo-text {
            font-size: 1.15rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 400;
            color: var(--text-sub);
            text-decoration: none;
            border-radius: 8px;
            position: relative;
            transition: color var(--transition);
        }

        .nav-links li a::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition);
        }

        .nav-links li a:hover {
            color: #fff;
        }

        .nav-links li a:hover::after {
            transform: scaleX(1);
        }

        .nav-links li a.active {
            color: #fff;
        }

        .nav-links li a.active::after {
            transform: scaleX(1);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-nav {
            padding: 8px 20px;
            font-size: 0.9rem;
        }

        .hamburger {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text-main);
            font-size: 1.1rem;
            cursor: pointer;
            background: rgba(255, 255, 255, 0.04);
            transition: all var(--transition);
        }

        .hamburger:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: 160px 0 80px;
            position: relative;
            background: linear-gradient(180deg, rgba(6, 13, 22, 0.75), rgba(8, 15, 25, 0.92)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            border-bottom: 1px solid var(--border);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 200px;
            background: radial-gradient(ellipse at 30% 0%, rgba(0, 180, 161, 0.12), transparent 70%);
            pointer-events: none;
        }

        .hero-inner {
            max-width: 860px;
        }

        .hero-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 180, 161, 0.12);
            border: 1px solid rgba(0, 180, 161, 0.3);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 600;
            line-height: 1.3;
            margin: 0 0 20px;
            letter-spacing: 0.01em;
        }

        .hero-title span {
            color: var(--primary);
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 700px;
            margin-bottom: 32px;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-meta {
            display: flex;
            gap: 28px;
            margin-top: 42px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
        }

        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-sub);
            font-size: 0.9rem;
        }

        .hero-meta-item i {
            color: var(--primary);
            font-size: 1rem;
        }

        /* ===== Timeline Section ===== */
        .timeline-section {
            padding: 90px 0;
        }

        .timeline-wrap {
            display: flex;
            gap: 56px;
            align-items: flex-start;
        }

        .timeline-content {
            flex: 1.1;
            padding-right: 20px;
        }

        .timeline-visual {
            flex: 0.9;
            position: sticky;
            top: 110px;
        }

        .timeline-visual .visual-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 12px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .timeline-visual .visual-card img {
            border-radius: calc(var(--radius) - 6px);
            width: 100%;
        }

        .timeline-list {
            position: relative;
            padding-left: 32px;
        }

        .timeline-list::before {
            content: "";
            position: absolute;
            left: 9px;
            top: 12px;
            bottom: 12px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), rgba(0, 180, 161, 0.2));
            border-radius: 4px;
        }

        .timeline-item {
            position: relative;
            padding: 0 0 38px 24px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -32px;
            top: 6px;
            width: 22px;
            height: 22px;
            background: var(--bg-dark);
            border: 2px solid var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1;
            box-shadow: 0 0 0 4px rgba(0, 180, 161, 0.12), 0 0 16px rgba(0, 180, 161, 0.2);
        }

        .timeline-dot i {
            font-size: 0.5rem;
            color: var(--primary);
        }

        .timeline-step-num {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.12em;
            text-transform: uppercase;
            margin-bottom: 6px;
            display: block;
        }

        .timeline-item h3 {
            font-size: 1.2rem;
            font-weight: 500;
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }

        .timeline-item p {
            color: var(--text-sub);
            font-size: 0.93rem;
            line-height: 1.75;
            margin: 0;
            max-width: 460px;
        }

        /* ===== Coverage / Cards ===== */
        .coverage-section {
            padding: 90px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .coverage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .coverage-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 32px 26px;
            position: relative;
            overflow: hidden;
            transition: all var(--transition);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .coverage-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 180, 161, 0.5), transparent);
        }

        .coverage-card:hover {
            border-color: rgba(255, 255, 255, 0.22);
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
        }

        .coverage-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 180, 161, 0.12);
            border: 1px solid rgba(0, 180, 161, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.25rem;
            margin-bottom: 20px;
        }

        .coverage-card h3 {
            font-size: 1.12rem;
            font-weight: 500;
            margin-bottom: 10px;
        }

        .coverage-card p {
            color: var(--text-sub);
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Platform band ===== */
        .platform-section {
            padding: 70px 0;
        }

        .platform-row {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .platform-info {
            flex: 1;
            min-width: 300px;
        }

        .platform-info .section-title {
            margin-bottom: 16px;
        }

        .platform-info p {
            color: var(--text-sub);
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .platform-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px 24px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .platform-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.93rem;
            color: var(--text-main);
        }

        .platform-list li i {
            color: var(--accent);
            font-size: 0.85rem;
            width: 18px;
            text-align: center;
        }

        .platform-stats {
            flex: 0.85;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .stat-card:hover {
            border-color: rgba(0, 180, 161, 0.4);
            transform: translateY(-3px);
        }

        .stat-num {
            font-size: 1.8rem;
            font-weight: 600;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 0.82rem;
            color: var(--text-sub);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 90px 0;
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border);
        }

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.18);
        }

        .faq-item.active {
            border-color: rgba(0, 180, 161, 0.45);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 1.02rem;
            font-weight: 500;
            text-align: left;
            cursor: pointer;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 180, 161, 0.12);
            border: 1px solid rgba(0, 180, 161, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 0.85rem;
            transition: transform var(--transition), background var(--transition);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 180, 161, 0.25);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 24px 22px;
            color: var(--text-sub);
            font-size: 0.93rem;
            line-height: 1.75;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 0;
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            position: relative;
            background: linear-gradient(135deg, rgba(0, 180, 161, 0.08), rgba(10, 26, 47, 0.4));
            border-bottom: 1px solid var(--border);
        }

        .cta-inner {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(0, 180, 161, 0.25);
            border-radius: 22px;
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .cta-inner::before {
            content: "";
            position: absolute;
            top: -40%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(0, 180, 161, 0.2), transparent 70%);
            pointer-events: none;
        }

        .cta-title {
            font-size: clamp(1.5rem, 3vw, 2.1rem);
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .cta-desc {
            color: var(--text-sub);
            max-width: 620px;
            margin: 0 auto 36px;
            line-height: 1.75;
            font-size: 0.98rem;
        }

        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(0, 180, 161, 0.2);
            padding: 64px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid var(--border);
        }

        .footer-brand .logo {
            margin-bottom: 18px;
        }

        .brand-desc {
            color: var(--text-sub);
            font-size: 0.9rem;
            line-height: 1.75;
            margin: 0;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: var(--text-sub);
            font-size: 0.92rem;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-contact li {
            color: var(--text-sub);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact li i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 0 26px;
            flex-wrap: wrap;
            gap: 14px;
        }

        .copyright {
            color: var(--text-weak);
            font-size: 0.85rem;
        }

        .footer-links {
            display: flex;
            gap: 24px;
        }

        .footer-links a {
            color: var(--text-weak);
            font-size: 0.85rem;
            transition: color var(--transition);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .coverage-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .platform-row {
                flex-direction: column;
                align-items: stretch;
            }

            .platform-stats {
                flex: none;
            }
        }

        @media (max-width: 991px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: 0;
                height: 100vh;
                width: 320px;
                max-width: 85vw;
                background: rgba(8, 15, 25, 0.97);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                border-left: 1px solid var(--border);
                flex-direction: column;
                align-items: flex-start;
                padding: 80px 32px 32px;
                gap: 16px;
                transform: translateX(100%);
                transition: transform 0.35s ease;
                z-index: 999;
            }

            .nav-links.open {
                transform: translateX(0);
            }

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

            .nav-links li a {
                display: block;
                width: 100%;
                padding: 12px 8px;
                font-size: 1.05rem;
            }

            .nav-links li a::after {
                left: 8px;
                right: auto;
                width: 28px;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .timeline-wrap {
                flex-direction: column-reverse;
                gap: 40px;
            }

            .timeline-visual {
                position: static;
                width: 100%;
            }

            .timeline-visual .visual-card {
                max-width: 520px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 64px 0;
            }

            .page-hero {
                padding: 130px 0 60px;
            }

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

            .platform-list {
                grid-template-columns: 1fr;
            }

            .platform-stats {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-num {
                font-size: 1.4rem;
            }

            .cta-inner {
                padding: 44px 24px;
            }

            .hero-btns .btn {
                width: 100%;
            }

            .hero-meta {
                flex-direction: column;
                gap: 12px;
            }

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

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

            .footer-links {
                gap: 16px;
                justify-content: center;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 20px;
            }

            .logo-text {
                font-size: 1rem;
            }

            .hero-title {
                font-size: 1.75rem;
            }

            .coverage-card {
                padding: 24px 20px;
            }

            .platform-stats {
                grid-template-columns: 1fr;
            }

            .timeline-item {
                padding-left: 16px;
            }

            .cta-section {
                padding: 56px 0;
            }

            .cta-inner {
                padding: 36px 20px;
                border-radius: 16px;
            }

            .btn {
                width: 100%;
            }

            .cta-btns {
                flex-direction: column;
            }
        }