/* roulang page: index */
:root {
            --bg-base: #070B14;
            --bg-panel: rgba(13, 20, 36, 0.72);
            --primary: #2E6BE6;
            --secondary: #38E8FF;
            --accent: #FFC53D;
            --text-main: #E6EDFF;
            --text-sub: #8B9BB4;
            --text-mute: #5A6A85;
            --success: #34D399;
            --warning: #FBBF24;
            --error: #F87171;
            --border-glass: rgba(255, 255, 255, 0.1);
            --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.35);
            --radius-lg: 16px;
            --radius-xl: 24px;
            --transition: 300ms ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg-base);
            color: var(--text-main);
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        @media (min-width: 1024px) {
            .container {
                padding: 0 32px;
            }
        }

        .section-padding {
            padding: 72px 0;
        }

        @media (min-width: 768px) {
            .section-padding {
                padding: 96px 0;
            }
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .section-subtitle {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.7;
            max-width: 560px;
        }

        .glass-card {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
            transition: transform 300ms ease, border-color 300ms ease, box-shadow 300ms ease;
        }

        .glass-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
            pointer-events: none;
            z-index: 1;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.45);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            transition: all 300ms ease;
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 4px 24px rgba(56, 232, 255, 0.25);
        }

        .btn-primary:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 32px rgba(56, 232, 255, 0.4);
            filter: brightness(1.1);
        }

        .btn-primary:active {
            transform: translateY(1px) scale(1.02);
        }

        .btn-ghost {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(8px);
        }

        .btn-ghost:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            box-shadow: 0 0 20px rgba(56, 232, 255, 0.15);
        }

        .btn-gold {
            background: linear-gradient(135deg, #FFD700, var(--accent));
            color: #1E1B4B;
            box-shadow: 0 4px 24px rgba(255, 197, 61, 0.35);
            font-weight: 700;
        }

        .btn-gold:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 36px rgba(255, 197, 61, 0.55);
            filter: brightness(1.05);
        }

        .btn-gold:active {
            transform: translateY(1px) scale(1.02);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }

        .btn-block {
            width: 100%;
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.78);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid transparent;
            border-image: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.4), transparent) 1;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        @media (min-width: 768px) {
            .header-inner {
                height: 76px;
            }
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            transition: opacity 300ms ease;
        }

        .brand:hover {
            opacity: 0.85;
        }

        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--secondary);
            box-shadow: 0 0 12px var(--secondary), 0 0 24px rgba(56, 232, 255, 0.5);
            animation: pulse-dot 2s ease-in-out infinite;
            flex-shrink: 0;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 8px var(--secondary), 0 0 16px rgba(56, 232, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 16px var(--secondary), 0 0 36px rgba(56, 232, 255, 0.7);
            }
        }

        .brand-name {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            white-space: nowrap;
        }

        .main-nav {
            display: none;
            align-items: center;
            gap: 28px;
        }

        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
        }

        .nav-link {
            position: relative;
            color: var(--text-sub);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 2px;
            transition: color 300ms ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--secondary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 300ms ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: #fff;
        }

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

        .nav-cta {
            display: none;
            background: linear-gradient(135deg, #FFD700, var(--accent));
            color: #1E1B4B;
            padding: 10px 24px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 700;
            box-shadow: 0 2px 16px rgba(255, 197, 61, 0.3);
            transition: all 300ms ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            box-shadow: 0 4px 28px rgba(255, 197, 61, 0.5);
            transform: scale(1.04);
        }

        @media (min-width: 1024px) {
            .nav-cta {
                display: inline-flex;
                align-items: center;
            }
        }

        .menu-toggle {
            display: flex;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }

        .menu-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 300ms ease;
        }

        .menu-toggle:hover span {
            background: var(--secondary);
        }

        @media (min-width: 1024px) {
            .menu-toggle {
                display: none;
            }
        }

        .mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 49;
            background: rgba(7, 11, 20, 0.96);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(56, 232, 255, 0.2);
            padding: 24px 32px 32px;
            display: none;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            color: var(--text-sub);
            font-size: 20px;
            font-weight: 600;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: color 300ms ease;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--secondary);
        }

        .mobile-menu .mobile-cta {
            background: linear-gradient(135deg, #FFD700, var(--accent));
            color: #1E1B4B;
            border-radius: 999px;
            text-align: center;
            padding: 14px;
            font-weight: 700;
            border: none;
            margin-top: 12px;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding-top: 120px;
            padding-bottom: 80px;
            overflow: hidden;
            background: var(--bg-base);
        }

        .hero-glow-1 {
            position: absolute;
            top: -10%;
            left: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(46, 107, 230, 0.28) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-glow-2 {
            position: absolute;
            bottom: -20%;
            right: -5%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(56, 232, 255, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr;
            gap: 48px;
            width: 100%;
        }

        @media (min-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1.1fr 0.9fr;
                align-items: center;
                gap: 64px;
            }
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(56, 232, 255, 0.08);
            border: 1px solid rgba(56, 232, 255, 0.2);
            color: var(--secondary);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 24px;
            fill: var(--secondary);
        }

        .hero-title {
            font-size: 36px;
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }

        @media (min-width: 768px) {
            .hero-title {
                font-size: 48px;
            }
        }

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

        .hero-sub {
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 480px;
        }

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

        @media (max-width: 520px) {
            .hero-btns .btn {
                width: 100%;
            }
        }

        .hero-visual {
            position: relative;
        }

        .hero-img-wrap {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.15);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            background: #0A1020;
        }

        .hero-img-wrap img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        @media (min-width: 768px) {
            .hero-img-wrap img {
                height: 440px;
            }
        }

        .hero-img-wrap::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.6), transparent);
        }

        .hero-img-wrap::before {
            content: "hth官方网";
            position: absolute;
            bottom: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(7, 11, 20, 0.6);
            backdrop-filter: blur(8px);
            color: var(--text-main);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* 优惠阶梯 */
        .pricing-section {
            position: relative;
            background: var(--bg-base);
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            margin-top: 48px;
        }

        @media (min-width: 768px) {
            .pricing-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 28px;
            }
        }

        .pricing-card {
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            transition: all 300ms ease;
            position: relative;
        }

        .pricing-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.45);
        }

        .pricing-card.featured {
            border-color: rgba(255, 197, 61, 0.5);
            box-shadow: 0 8px 40px rgba(255, 197, 61, 0.08), var(--shadow-card);
        }

        @media (min-width: 768px) {
            .pricing-card.featured {
                transform: translateY(-16px);
            }
            .pricing-card.featured:hover {
                transform: translateY(-20px);
            }
        }

        .pricing-card.featured::before {
            background: linear-gradient(90deg, transparent, rgba(255, 197, 61, 0.6), transparent);
            height: 2px;
        }

        .featured-badge {
            position: absolute;
            top: 16px;
            right: -10px;
            background: var(--accent);
            color: #1E1B4B;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 6px;
            transform: rotate(-12deg);
            box-shadow: 0 4px 16px rgba(255, 197, 61, 0.4);
            letter-spacing: 0.04em;
        }

        .pricing-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .pricing-desc {
            color: var(--text-sub);
            font-size: 13px;
            margin-bottom: 24px;
        }

        .pricing-price {
            display: flex;
            align-items: baseline;
            gap: 4px;
            margin-bottom: 24px;
        }

        .pricing-price .currency {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-sub);
        }

        .pricing-price .amount {
            font-size: 48px;
            font-weight: 700;
            letter-spacing: -0.03em;
            line-height: 1;
        }

        .pricing-price .period {
            color: var(--text-mute);
            font-size: 14px;
        }

        .pricing-list {
            list-style: none;
            margin: 0;
            padding: 0;
            flex: 1;
            margin-bottom: 28px;
        }

        .pricing-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 7px 0;
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.5;
        }

        .pricing-list li i {
            color: var(--success);
            font-size: 14px;
            flex-shrink: 0;
        }

        .pricing-list li.disabled {
            color: var(--text-mute);
        }

        .pricing-list li.disabled i {
            color: var(--text-mute);
            opacity: 0.4;
        }

        .pricing-btn {
            margin-top: auto;
        }

        /* 套餐对比 */
        .compare-section {
            background: rgba(255, 255, 255, 0.02);
            position: relative;
            overflow: hidden;
        }

        .compare-table-wrap {
            margin-top: 48px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            background: rgba(13, 20, 36, 0.5);
            backdrop-filter: blur(10px);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
        }

        .compare-table th,
        .compare-table td {
            padding: 18px 24px;
            text-align: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 14px;
        }

        .compare-table thead th {
            background: rgba(255, 255, 255, 0.04);
            color: var(--secondary);
            font-weight: 600;
            font-size: 15px;
            border-bottom: 1px solid rgba(56, 232, 255, 0.15);
        }

        .compare-table thead th:first-child {
            text-align: left;
            color: var(--text-main);
            font-weight: 600;
        }

        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }

        .compare-table tbody tr {
            transition: background 300ms ease;
        }

        .compare-table tbody tr:hover {
            background: rgba(56, 232, 255, 0.05);
        }

        .compare-table td:first-child {
            text-align: left;
            color: var(--text-sub);
            font-weight: 500;
        }

        .compare-table .check {
            color: var(--success);
        }

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

        .compare-mobile {
            display: none;
        }

        @media (max-width: 767px) {
            .compare-table-wrap {
                display: none;
            }
            .compare-mobile {
                display: flex;
                flex-direction: column;
                gap: 20px;
                margin-top: 40px;
            }
            .compare-mobile-card {
                padding: 24px;
            }
            .compare-mobile-card h3 {
                font-size: 18px;
                font-weight: 700;
                margin-bottom: 16px;
                color: var(--text-main);
            }
            .compare-mobile-card .compare-row {
                display: flex;
                justify-content: space-between;
                padding: 10px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
                font-size: 14px;
            }
            .compare-mobile-card .compare-row .label {
                color: var(--text-sub);
            }
            .compare-mobile-card .compare-row .value {
                color: var(--text-main);
                font-weight: 500;
            }
            .compare-mobile-card .compare-row .value.check {
                color: var(--success);
            }
        }

        /* 限时入口 */
        .promo-banner {
            position: relative;
            padding: 72px 0;
            background: var(--bg-base);
            overflow: hidden;
        }

        .promo-banner::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.5), transparent);
        }

        .promo-banner::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 197, 61, 0.4), transparent);
        }

        .promo-glow-1 {
            position: absolute;
            top: 20%;
            left: 10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(56, 232, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .promo-glow-2 {
            position: absolute;
            bottom: 10%;
            right: 10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 197, 61, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .promo-content {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .promo-content h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        @media (min-width: 768px) {
            .promo-content h2 {
                font-size: 36px;
            }
        }

        .promo-content p {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }

        .countdown-wrap {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 40px;
        }

        .countdown-box {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            min-width: 80px;
            padding: 20px 12px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .countdown-box::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
        }

        .countdown-box .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1;
            font-variant-numeric: tabular-nums;
        }

        .countdown-box .label {
            font-size: 12px;
            color: var(--text-sub);
            margin-top: 8px;
            display: block;
        }

        @media (max-width: 520px) {
            .countdown-wrap {
                gap: 10px;
            }
            .countdown-box {
                min-width: 64px;
                padding: 14px 8px;
            }
            .countdown-box .num {
                font-size: 28px;
            }
        }

        /* 最新资讯 */
        .news-section {
            background: var(--bg-base);
        }

        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            margin-top: 48px;
        }

        @media (min-width: 768px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        .news-card {
            display: flex;
            gap: 20px;
            padding: 20px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(10px);
            transition: all 300ms ease;
            position: relative;
            overflow: hidden;
        }

        .news-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
        }

        .news-card:hover {
            border-color: rgba(56, 232, 255, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
        }

        .news-thumb {
            width: 120px;
            flex-shrink: 0;
            border-radius: 12px;
            overflow: hidden;
            background: #0D1424;
        }

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

        @media (max-width: 520px) {
            .news-thumb {
                width: 80px;
                height: 80px;
            }
            .news-card {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 140px;
            }
        }

        .news-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .news-badge {
            display: inline-flex;
            align-self: flex-start;
            background: rgba(46, 107, 230, 0.15);
            border: 1px solid rgba(46, 107, 230, 0.3);
            color: var(--secondary);
            font-size: 11px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 6px;
        }

        .news-title a {
            transition: color 300ms ease;
        }

        .news-title a:hover {
            color: var(--secondary);
        }

        .news-summary {
            color: var(--text-sub);
            font-size: 13px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-mute);
        }

        .news-meta .read-more {
            color: var(--secondary);
            font-weight: 600;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 300ms ease;
        }

        .news-meta .read-more:hover {
            gap: 10px;
            color: #fff;
        }

        .news-empty {
            grid-column: 1 / -1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 80px 24px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.02);
            border: 1px dashed rgba(255, 255, 255, 0.1);
            text-align: center;
        }

        .news-empty i {
            font-size: 40px;
            color: var(--text-mute);
            margin-bottom: 16px;
        }

        .news-empty p {
            color: var(--text-sub);
            font-size: 15px;
        }

        /* 咨询表单 */
        .contact-section {
            background: rgba(255, 255, 255, 0.02);
            position: relative;
            overflow: hidden;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            margin-top: 48px;
        }

        @media (min-width: 768px) {
            .contact-grid {
                grid-template-columns: 0.9fr 1.1fr;
                gap: 56px;
            }
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .contact-info-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .contact-info-desc {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-glass);
        }

        .contact-item-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(56, 232, 255, 0.1);
            color: var(--secondary);
            font-size: 18px;
            flex-shrink: 0;
        }

        .contact-item-content .label {
            font-size: 12px;
            color: var(--text-mute);
            display: block;
        }

        .contact-item-content .value {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }

        .contact-form-wrap {
            padding: 32px;
        }

        .contact-form-wrap .form-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .contact-form-wrap .form-desc {
            color: var(--text-sub);
            font-size: 14px;
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-sub);
            margin-bottom: 8px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 12px 16px;
            color: var(--text-main);
            font-size: 14px;
            transition: all 300ms ease;
            outline: none;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-mute);
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(56, 232, 255, 0.15);
            background: rgba(255, 255, 255, 0.08);
        }

        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }

        .form-error {
            display: none;
            background: rgba(248, 113, 113, 0.1);
            border-left: 3px solid var(--error);
            color: var(--error);
            font-size: 13px;
            padding: 10px 14px;
            border-radius: 8px;
            margin-bottom: 16px;
        }

        .form-error.show {
            display: block;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-base);
        }

        .faq-list {
            margin-top: 48px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 860px;
        }

        .faq-item {
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-glass);
            overflow: hidden;
            transition: border-color 300ms ease;
        }

        .faq-item.active {
            border-color: rgba(56, 232, 255, 0.4);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color 300ms ease;
        }

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

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 300ms ease;
            color: var(--text-sub);
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            color: var(--secondary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 16px;
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-base);
            position: relative;
            overflow: hidden;
        }

        .cta-box {
            position: relative;
            padding: 56px 32px;
            text-align: center;
            border-radius: var(--radius-xl);
            background: rgba(13, 20, 36, 0.6);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.5), transparent);
        }

        .cta-glow-1 {
            position: absolute;
            top: -30%;
            left: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(46, 107, 230, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-glow-2 {
            position: absolute;
            bottom: -30%;
            right: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 197, 61, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }

        @media (min-width: 768px) {
            .cta-box h2 {
                font-size: 38px;
            }
        }

        .cta-box p {
            color: var(--text-sub);
            font-size: 15px;
            margin-bottom: 28px;
            position: relative;
            z-index: 2;
        }

        .cta-box .btn {
            position: relative;
            z-index: 2;
        }

        /* Footer */
        .site-footer {
            background: rgba(7, 11, 20, 0.98);
            border-top: 1px solid var(--border-glass);
            position: relative;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.3) 50%, rgba(255, 197, 61, 0.3), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            padding: 56px 0 40px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr;
                gap: 56px;
            }
        }

        .footer-brand .brand-name {
            font-size: 22px;
            margin-bottom: 12px;
        }

        .footer-desc {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-links-column h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

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

        .footer-links-column ul a {
            color: var(--text-sub);
            font-size: 14px;
            transition: color 300ms ease;
        }

        .footer-links-column ul a:hover {
            color: var(--secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            text-align: center;
            color: var(--text-mute);
            font-size: 13px;
        }

        .footer-bottom a {
            color: var(--text-sub);
            transition: color 300ms ease;
        }

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

        @media (max-width: 767px) {
            .footer-grid {
                gap: 32px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-base: #070B14;
            --bg-panel: rgba(13, 20, 36, 0.72);
            --primary: #2E6BE6;
            --secondary: #38E8FF;
            --accent: #FFC53D;
            --text-main: #E6EDFF;
            --text-sub: #8B9BB4;
            --text-mute: #5A6A85;
            --success: #34D399;
            --warning: #FBBF24;
            --error: #F87171;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.35);
            --font-ch: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            scroll-padding-top: 90px;
        }

        body {
            font-family: var(--font-ch);
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            color: var(--text-main);
            outline: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        .container-lg {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* 玻璃卡片 */
        .glass-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1.5rem;
            box-shadow: var(--shadow-card);
            position: relative;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .glass-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 1.5rem;
            right: 1.5rem;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
            opacity: 0.8;
            border-radius: 100%;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.22);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.875rem 2rem;
            border-radius: 999px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 24px rgba(56, 232, 255, 0.25);
            white-space: nowrap;
        }

        .btn-primary:hover {
            transform: scale(1.04);
            box-shadow: 0 8px 36px rgba(56, 232, 255, 0.4);
            filter: brightness(1.1);
        }

        .btn-primary:active {
            transform: translateY(1px) scale(1.01);
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            background: linear-gradient(135deg, #FFD75E, var(--accent));
            color: #1E1B4B;
            font-weight: 700;
            font-size: 1rem;
            padding: 0.875rem 2.25rem;
            border-radius: 999px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 24px rgba(255, 197, 61, 0.3);
            white-space: nowrap;
        }

        .btn-gold:hover {
            transform: scale(1.05);
            box-shadow: 0 8px 40px rgba(255, 197, 61, 0.5);
            filter: brightness(1.08);
        }

        .btn-gold:active {
            transform: translateY(1px) scale(1.02);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: var(--text-main);
            font-weight: 500;
            font-size: 1rem;
            padding: 0.875rem 2rem;
            border-radius: 999px;
            backdrop-filter: blur(8px);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(56, 232, 255, 0.5);
            color: #fff;
            transform: scale(1.03);
        }

        /* 徽章 */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            background: rgba(46, 107, 230, 0.15);
            border: 1px solid rgba(46, 107, 230, 0.35);
            color: #93C5FD;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.85rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }

        .badge-gold {
            background: rgba(255, 197, 61, 0.15);
            border-color: rgba(255, 197, 61, 0.4);
            color: var(--accent);
        }

        .badge-cyan {
            background: rgba(56, 232, 255, 0.12);
            border-color: rgba(56, 232, 255, 0.35);
            color: var(--secondary);
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid transparent;
            background-clip: padding-box;
        }

        .site-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.45), transparent);
            pointer-events: none;
        }

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

        @media (min-width: 768px) {
            .site-header .header-inner {
                height: 80px;
            }
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.3rem;
            letter-spacing: 0.01em;
            color: var(--text-main);
            transition: opacity 0.3s ease;
        }

        .brand-logo:hover {
            opacity: 0.85;
        }

        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 999px;
            background: var(--secondary);
            box-shadow: 0 0 12px rgba(56, 232, 255, 0.8), 0 0 24px rgba(56, 232, 255, 0.4);
            animation: pulse-dot 2s ease-in-out infinite;
            flex-shrink: 0;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(56, 232, 255, 0.8), 0 0 24px rgba(56, 232, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 20px rgba(56, 232, 255, 1), 0 0 36px rgba(56, 232, 255, 0.6);
            }
        }

        .main-nav {
            display: none;
            align-items: center;
            gap: 0.25rem;
        }

        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
        }

        .main-nav .nav-link {
            position: relative;
            display: inline-block;
            padding: 0.5rem 1rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-sub);
            transition: color 0.3s ease;
        }

        .main-nav .nav-link::after {
            content: '';
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0.05rem;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--secondary), transparent);
            opacity: 0;
            transform: scaleX(0.4);
            transition: opacity 0.3s ease, transform 0.3s ease;
        }

        .main-nav .nav-link:hover {
            color: #fff;
        }

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

        .main-nav .nav-link.active {
            color: #fff;
        }

        .header-cta {
            display: none;
        }

        @media (min-width: 1024px) {
            .header-cta {
                display: inline-flex;
                background: linear-gradient(135deg, #FFD75E, var(--accent));
                color: #1E1B4B;
                font-size: 0.9rem;
                font-weight: 700;
                padding: 0.55rem 1.5rem;
                border-radius: 999px;
                box-shadow: 0 0 20px rgba(255, 197, 61, 0.25);
                transition: all 0.3s ease;
            }

            .header-cta:hover {
                box-shadow: 0 0 32px rgba(255, 197, 61, 0.5);
                transform: scale(1.04);
            }
        }

        .nav-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-main);
            font-size: 1.2rem;
        }

        @media (min-width: 1024px) {
            .nav-toggle {
                display: none;
            }
        }

        /* 移动端抽屉 */
        .mobile-menu {
            position: fixed;
            inset: 0;
            z-index: 100;
            background: rgba(7, 11, 20, 0.97);
            backdrop-filter: blur(20px);
            display: flex;
            flex-direction: column;
            padding: 2rem;
            transform: translateY(-100%);
            transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
            visibility: hidden;
        }

        .mobile-menu.open {
            transform: translateY(0);
            visibility: visible;
        }

        .mobile-menu .menu-close {
            position: absolute;
            top: 1.25rem;
            right: 1.25rem;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-main);
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .mobile-menu .menu-brand {
            font-size: 1.4rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 2.5rem;
        }

        .mobile-menu .menu-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            flex: 1;
        }

        .mobile-menu .menu-links a {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--text-sub);
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-menu .menu-links a.active {
            color: var(--secondary);
        }

        .mobile-menu .menu-footer {
            margin-top: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 82vh;
            display: flex;
            align-items: center;
            padding-top: 4rem;
            padding-bottom: 5rem;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: -2;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 12% 50%, rgba(46, 107, 230, 0.35), transparent 60%),
                radial-gradient(ellipse at 85% 80%, rgba(56, 232, 255, 0.18), transparent 55%);
            z-index: -1;
        }

        .hero-content {
            max-width: 620px;
        }

        .hero-section .hero-title {
            font-size: 2.5rem;
            line-height: 1.2;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1.25rem;
            letter-spacing: -0.01em;
        }

        .hero-section .hero-title .brand-highlight {
            color: var(--accent);
            text-shadow: 0 0 30px rgba(255, 197, 61, 0.35);
        }

        @media (min-width: 768px) {
            .hero-section .hero-title {
                font-size: 3.25rem;
            }
        }

        .hero-section .hero-sub {
            font-size: 1.1rem;
            color: var(--text-sub);
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-meta-item {
            color: var(--text-sub);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

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

        /* 板块通用 */
        .site-section {
            padding: 5rem 0;
        }

        @media (min-width: 768px) {
            .site-section {
                padding: 6rem 0;
            }
        }

        .section-head {
            margin-bottom: 3.5rem;
            max-width: 720px;
        }

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

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--secondary);
            background: rgba(56, 232, 255, 0.08);
            border: 1px solid rgba(56, 232, 255, 0.2);
            border-radius: 999px;
            padding: 0.3rem 1rem;
            margin-bottom: 1rem;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2.5rem;
            }
        }

        .section-desc {
            color: var(--text-sub);
            font-size: 1.05rem;
            line-height: 1.8;
        }

        /* 流程步骤 */
        .process-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .process-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .process-step {
            position: relative;
            padding: 2rem 1.5rem;
            text-align: center;
        }

        .process-step .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.2), rgba(56, 232, 255, 0.1));
            border: 1px solid rgba(56, 232, 255, 0.25);
            color: var(--secondary);
            font-size: 1.3rem;
            font-weight: 700;
        }

        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 0.5rem;
        }

        .process-step p {
            font-size: 0.88rem;
            color: var(--text-sub);
            line-height: 1.7;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 42px;
            right: -12%;
            width: 24%;
            height: 1px;
            background: linear-gradient(90deg, rgba(56, 232, 255, 0.3), transparent);
            display: none;
        }

        @media (min-width: 768px) {
            .process-step:not(:last-child)::after {
                display: block;
            }
        }

        /* 服务卡片 */
        .features-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .feature-card {
            padding: 2rem 1.75rem;
        }

        .feature-card .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(46, 107, 230, 0.15), rgba(56, 232, 255, 0.08));
            border: 1px solid rgba(56, 232, 255, 0.2);
            color: var(--secondary);
            font-size: 1.25rem;
            margin-bottom: 1.25rem;
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.6rem;
        }

        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-sub);
            line-height: 1.75;
        }

        /* 场景 */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 1024px) {
            .scenario-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .scenario-card {
            overflow: hidden;
            padding: 0;
            display: flex;
            flex-direction: column;
        }

        .scenario-card .scenario-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: #0F172A;
            border-radius: 1.5rem 1.5rem 0 0;
        }

        .scenario-card .scenario-body {
            padding: 1.75rem;
            flex: 1;
        }

        .scenario-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.6rem;
        }

        .scenario-card p {
            font-size: 0.92rem;
            color: var(--text-sub);
            line-height: 1.75;
        }

        .scenario-card .scenario-tag {
            margin-top: 1rem;
        }

        /* 保障统计 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
        }

        @media (min-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .stat-card {
            padding: 2rem 1.5rem;
            text-align: center;
        }

        .stat-card .stat-num {
            font-size: 2.1rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 0.3rem;
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-sub);
        }

        .stat-card .stat-num i {
            font-size: 1.4rem;
            color: var(--secondary);
            margin-right: 0.25rem;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            border-radius: 1.25rem;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item.active {
            border-color: rgba(56, 232, 255, 0.4);
            box-shadow: 0 0 30px rgba(56, 232, 255, 0.06);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.5rem 1.75rem;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: #E6EDFF;
            background: transparent;
            transition: color 0.3s ease;
        }

        .faq-question:hover {
            color: #fff;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--secondary);
            font-size: 0.75rem;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background: rgba(56, 232, 255, 0.15);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1);
        }

        .faq-answer-inner {
            padding: 0 1.75rem 1.5rem;
            color: var(--text-sub);
            font-size: 0.95rem;
            line-height: 1.85;
        }

        /* CTA横幅 */
        .cta-banner {
            position: relative;
            overflow: hidden;
            border-radius: 2rem;
            padding: 4rem 2rem;
            text-align: center;
            background: linear-gradient(135deg, rgba(13, 20, 36, 0.9), rgba(7, 11, 20, 0.95));
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(56, 232, 255, 0.2), transparent 70%);
            top: -180px;
            left: -120px;
            z-index: 0;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(255, 197, 61, 0.18), transparent 70%);
            bottom: -160px;
            right: -100px;
            z-index: 0;
        }

        .cta-banner>* {
            position: relative;
            z-index: 1;
        }

        .cta-banner h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }

        @media (min-width: 768px) {
            .cta-banner h2 {
                font-size: 2.5rem;
            }
        }

        .cta-banner p {
            color: var(--text-sub);
            font-size: 1.05rem;
            max-width: 520px;
            margin: 0 auto 2rem;
            line-height: 1.8;
        }

        .cta-banner .btn-gold {
            font-size: 1.05rem;
            padding: 1rem 2.5rem;
        }

        /* 面包屑 */
        .breadcrumb-wrap {
            padding: 1.5rem 0 0;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-mute);
        }

        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.3s ease;
        }

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

        .breadcrumb .sep {
            color: var(--text-mute);
            opacity: 0.6;
        }

        .breadcrumb .current {
            color: #fff;
        }

        /* 页脚 */
        .site-footer {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            background: #050810;
            padding: 4rem 0 2rem;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.4), rgba(255, 197, 61, 0.3), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }

        .footer-brand .brand-name {
            font-size: 1.45rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1rem;
        }

        .footer-desc {
            color: var(--text-mute);
            font-size: 0.92rem;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-links-column h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1.25rem;
        }

        .footer-links-column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.65rem;
        }

        .footer-links-column ul li a {
            color: var(--text-sub);
            font-size: 0.92rem;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer-links-column ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }

        .footer-bottom {
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            color: var(--text-mute);
            font-size: 0.85rem;
        }

        .footer-bottom a {
            color: var(--text-mute);
            transition: color 0.3s ease;
        }

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

        /* 装饰线 */
        .section-divider {
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.2), transparent);
            border: none;
            margin: 0;
        }

        /* Focus */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* 响应式细节 */
        @media (max-width: 640px) {
            .section-title {
                font-size: 1.65rem;
            }

            .hero-section .hero-title {
                font-size: 2rem;
            }

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

            .cta-banner {
                padding: 3rem 1.25rem;
                border-radius: 1.25rem;
            }

            .cta-banner h2 {
                font-size: 1.6rem;
            }

            .footer-grid {
                gap: 2rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-base: #070B14;
            --bg-panel: rgba(13, 20, 36, 0.72);
            --primary: #2E6BE6;
            --secondary: #38E8FF;
            --accent: #FFC53D;
            --text-main: #E6EDFF;
            --text-sub: #8B9BB4;
            --text-mute: #5A6A85;
            --radius-card: 1rem;
            --radius-btn: 9999px;
            --radius-input: 0.5rem;
            --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.35);
            --container-max: 1280px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Inter", system-ui, sans-serif;
            background: var(--bg-base);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .3s ease;
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 2rem;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid transparent;
            background-image: linear-gradient(rgba(7, 11, 20, 0.72), rgba(7, 11, 20, 0.72)), linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.5), transparent);
            background-origin: border-box;
            background-clip: padding-box, border-box;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 4rem;
        }
        @media (min-width: 768px) {
            .header-inner {
                height: 5rem;
            }
        }
        .brand {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: .02em;
            color: var(--text-main);
            transition: color .3s ease;
        }
        .brand:hover {
            color: #fff;
        }
        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--secondary);
            box-shadow: 0 0 12px rgba(56, 232, 255, 0.8);
            animation: pulse-dot 2s ease-in-out infinite;
            flex-shrink: 0;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: .55;
                transform: scale(1.25);
            }
        }
        .main-nav {
            display: none;
            align-items: center;
            gap: 1.75rem;
        }
        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
        }
        .nav-link {
            position: relative;
            font-size: .95rem;
            color: var(--text-sub);
            padding: .25rem 0;
            font-weight: 500;
            transition: color .3s ease;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--secondary), rgba(56, 232, 255, 0.2));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease;
            box-shadow: 0 0 10px rgba(56, 232, 255, 0.6);
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: #fff;
        }
        .header-cta {
            display: none;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .header-cta {
                display: flex;
            }
        }
        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: linear-gradient(135deg, #FFD66B, var(--accent));
            color: #1E1B4B;
            font-weight: 700;
            font-size: .9rem;
            padding: .55rem 1.4rem;
            border-radius: var(--radius-btn);
            box-shadow: 0 0 20px rgba(255, 197, 61, 0.35);
            transition: all .3s ease;
            white-space: nowrap;
        }
        .btn-gold:hover {
            box-shadow: 0 0 32px rgba(255, 197, 61, 0.55);
            transform: scale(1.04);
        }
        .btn-gold:active {
            transform: translateY(1px) scale(1.02);
        }
        .menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.75rem;
            height: 2.75rem;
            border-radius: 0.75rem;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-main);
            font-size: 1.2rem;
            transition: background .3s ease;
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        @media (min-width: 1024px) {
            .menu-toggle {
                display: none;
            }
        }

        /* ===== Mobile Drawer ===== */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            width: min(85vw, 380px);
            height: 100vh;
            background: rgba(7, 11, 20, 0.96);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            z-index: 100;
            transform: translateX(100%);
            transition: transform .4s cubic-bezier(.4, 0, .2, 1);
            display: flex;
            flex-direction: column;
            padding: 1.5rem;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 2rem;
        }
        .drawer-close {
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--text-sub);
            transition: background .3s ease;
        }
        .drawer-close:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: .75rem;
            flex: 1;
        }
        .drawer-link {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-sub);
            padding: .75rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: color .3s ease, padding-left .3s ease;
        }
        .drawer-link:hover,
        .drawer-link.active {
            color: var(--secondary);
            padding-left: .5rem;
        }
        .drawer-cta {
            margin-top: auto;
            width: 100%;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 99;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease, visibility .3s ease;
        }
        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: .95rem;
            padding: .8rem 1.8rem;
            transition: all .3s ease;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 0 24px rgba(56, 232, 255, 0.25);
        }
        .btn-primary:hover {
            box-shadow: 0 0 40px rgba(56, 232, 255, 0.45);
            transform: scale(1.04);
        }
        .btn-primary:active {
            transform: translateY(1px) scale(1.02);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--text-main);
            backdrop-filter: blur(8px);
        }
        .btn-ghost:hover {
            border-color: rgba(56, 232, 255, 0.5);
            color: #fff;
            box-shadow: 0 0 20px rgba(56, 232, 255, 0.15);
            transform: scale(1.03);
        }
        .btn-block {
            width: 100%;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: var(--bg-base);
            overflow: hidden;
            padding: 4rem 0;
        }
        .hero::before {
            content: "";
            position: absolute;
            top: -20%;
            left: -15%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 107, 230, 0.35), transparent 70%);
            pointer-events: none;
        }
        .hero::after {
            content: "";
            position: absolute;
            bottom: -30%;
            right: -10%;
            width: 550px;
            height: 550px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(56, 232, 255, 0.22), transparent 70%);
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1.05fr .95fr;
                gap: 3rem;
            }
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .05em;
            color: var(--secondary);
            background: rgba(56, 232, 255, 0.1);
            border: 1px solid rgba(56, 232, 255, 0.25);
            padding: .4rem 1rem;
            border-radius: var(--radius-btn);
            margin-bottom: 1.25rem;
        }
        .hero h1 {
            font-size: 2.2rem;
            line-height: 1.2;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 1rem;
            letter-spacing: .01em;
        }
        @media (min-width: 768px) {
            .hero h1 {
                font-size: 3rem;
            }
        }
        @media (min-width: 1280px) {
            .hero h1 {
                font-size: 3.5rem;
            }
        }
        .hero h1 .text-accent {
            color: var(--accent);
        }
        .hero-sub {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 1.25rem;
            letter-spacing: .02em;
        }
        .hero-desc {
            font-size: 1rem;
            color: var(--text-sub);
            max-width: 34rem;
            margin-bottom: 2rem;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .hero-visual {
            position: relative;
        }
        .hero-img-wrap {
            position: relative;
            border-radius: 1.5rem;
            overflow: hidden;
            background: #0f172a;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-img-wrap::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
            z-index: 2;
        }
        .hero-img-wrap img {
            width: 100%;
            height: 100%;
            min-height: 320px;
            object-fit: cover;
        }
        .hero-glow {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 80%;
            max-width: 320px;
            height: 160px;
            background: rgba(56, 232, 255, 0.18);
            filter: blur(70px);
            border-radius: 50%;
            z-index: 1;
            pointer-events: none;
        }

        /* ===== Section ===== */
        .section {
            padding: 4rem 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 5.5rem 0;
            }
        }
        .section-head {
            text-align: center;
            max-width: 42rem;
            margin: 0 auto 3rem;
        }
        .section-head .section-tag {
            display: inline-block;
            font-size: .82rem;
            font-weight: 600;
            letter-spacing: .08em;
            text-transform: uppercase;
            color: var(--secondary);
            margin-bottom: .75rem;
            background: rgba(56, 232, 255, 0.08);
            padding: .3rem 1rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(56, 232, 255, 0.2);
        }
        .section-head h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: .75rem;
        }
        @media (min-width: 768px) {
            .section-head h2 {
                font-size: 2.4rem;
            }
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 1rem;
        }

        /* ===== Cards ===== */
        .glass-card {
            position: relative;
            background: rgba(13, 20, 36, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1.5rem;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }
        .glass-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            border-radius: 1.5rem 1.5rem 0 0;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
            pointer-events: none;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 16px 50px rgba(0, 0, 0, 0.5);
        }

        /* ===== Plan cards ===== */
        .plan-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 768px) {
            .plan-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.75rem;
            }
        }
        .plan-card {
            position: relative;
            padding: 2rem 1.75rem;
            display: flex;
            flex-direction: column;
            text-align: left;
        }
        .plan-card.featured {
            border-color: rgba(255, 197, 61, 0.5);
            box-shadow: 0 0 40px rgba(255, 197, 61, 0.15), 0 8px 40px rgba(0, 0, 0, 0.35);
        }
        @media (min-width: 1024px) {
            .plan-card.featured {
                transform: translateY(-1rem);
            }
            .plan-card.featured:hover {
                transform: translateY(-1.25rem);
            }
        }
        .plan-card.featured::after {
            content: "";
            position: absolute;
            top: -1px;
            left: 10%;
            right: 10%;
            height: 3px;
            border-radius: 0 0 6px 6px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
        }
        .plan-badge {
            position: absolute;
            top: 1.1rem;
            right: -0.6rem;
            background: var(--accent);
            color: #1E1B4B;
            font-size: .72rem;
            font-weight: 800;
            padding: .3rem .7rem;
            border-radius: .4rem;
            transform: rotate(-12deg);
            box-shadow: 0 4px 14px rgba(255, 197, 61, 0.4);
            letter-spacing: .05em;
        }
        .plan-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: .25rem;
        }
        .plan-desc {
            font-size: .85rem;
            color: var(--text-sub);
            margin-bottom: 1.5rem;
        }
        .plan-price {
            display: flex;
            align-items: baseline;
            gap: .25rem;
            margin-bottom: 1.5rem;
        }
        .plan-price .currency {
            font-size: 1rem;
            color: var(--text-sub);
            font-weight: 600;
        }
        .plan-price .amount {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1;
        }
        .plan-price .period {
            font-size: .85rem;
            color: var(--text-mute);
        }
        .plan-features {
            list-style: none;
            margin-bottom: 1.75rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: .65rem;
        }
        .plan-features li {
            display: flex;
            align-items: flex-start;
            gap: .6rem;
            font-size: .92rem;
            color: var(--text-sub);
        }
        .plan-features li i {
            color: var(--secondary);
            margin-top: .2rem;
            flex-shrink: 0;
        }

        /* ===== Compare table ===== */
        .compare-section {
            position: relative;
            background: linear-gradient(180deg, rgba(7, 11, 20, 0.6), rgba(13, 20, 36, 0.4));
        }
        .compare-wrap {
            overflow-x: auto;
            border-radius: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background: rgba(13, 20, 36, 0.72);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 640px;
        }
        .compare-table thead th {
            padding: 1.1rem 1.25rem;
            text-align: left;
            font-size: .9rem;
            font-weight: 700;
            background: rgba(255, 255, 255, 0.05);
            color: var(--secondary);
            white-space: nowrap;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .compare-table tbody td {
            padding: 1rem 1.25rem;
            font-size: .92rem;
            color: var(--text-sub);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table tbody tr:hover {
            background: rgba(56, 232, 255, 0.06);
        }
        .compare-table .check {
            color: var(--secondary);
            font-size: 1rem;
        }
        .compare-table .times {
            color: var(--text-mute);
            font-size: 1rem;
        }
        .compare-table .highlight-col {
            background: rgba(255, 197, 61, 0.05);
        }

        /* ===== Mobile compare cards ===== */
        .mobile-compare {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
            margin-top: 1.5rem;
        }
        @media (min-width: 768px) {
            .mobile-compare {
                display: none;
            }
        }
        .compare-card {
            padding: 1.25rem;
        }
        .compare-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: .75rem;
            display: flex;
            align-items: center;
            gap: .5rem;
        }
        .compare-card ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: .5rem;
        }
        .compare-card li {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .88rem;
            color: var(--text-sub);
        }
        .compare-card li .label {
            font-weight: 600;
            color: var(--text-mute);
            min-width: 4.5rem;
        }

        /* ===== Service scene ===== */
        .service-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 768px) {
            .service-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.75rem;
            }
        }
        .service-card {
            overflow: hidden;
        }
        .service-card .cover {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: #0f172a;
        }
        .service-card .body {
            padding: 1.5rem;
        }
        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: .6rem;
        }
        .service-card p {
            font-size: .92rem;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 768px) {
            .steps-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.5rem;
            }
        }
        .step-item {
            text-align: center;
            padding: 2rem 1.25rem;
        }
        .step-num {
            width: 3rem;
            height: 3rem;
            margin: 0 auto 1rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--secondary);
            background: rgba(56, 232, 255, 0.1);
            border: 1px solid rgba(56, 232, 255, 0.3);
            box-shadow: 0 0 20px rgba(56, 232, 255, 0.15);
        }
        .step-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: .5rem;
        }
        .step-item p {
            font-size: .88rem;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 48rem;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .faq-item {
            overflow: hidden;
            transition: border-color .3s ease;
        }
        .faq-item.open {
            border-color: rgba(56, 232, 255, 0.4);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            transition: color .3s ease;
        }
        .faq-question:hover {
            color: var(--secondary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 1.75rem;
            height: 1.75rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(56, 232, 255, 0.1);
            border: 1px solid rgba(56, 232, 255, 0.25);
            color: var(--secondary);
            font-size: .8rem;
            transition: transform .3s ease, background .3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            background: rgba(56, 232, 255, 0.2);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem;
            font-size: .92rem;
            color: var(--text-sub);
            line-height: 1.75;
        }

        /* ===== Contact ===== */
        .contact-section {
            position: relative;
            overflow: hidden;
        }
        .contact-section::before {
            content: "";
            position: absolute;
            top: 30%;
            left: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 107, 230, 0.2), transparent 70%);
            pointer-events: none;
        }
        .contact-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            align-items: start;
        }
        @media (min-width: 1024px) {
            .contact-grid {
                grid-template-columns: .9fr 1.1fr;
                gap: 3rem;
            }
        }
        .contact-info {
            padding: 2rem;
        }
        .contact-info h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: .75rem;
        }
        .contact-info>p {
            color: var(--text-sub);
            font-size: .95rem;
            margin-bottom: 1.5rem;
        }
        .contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .contact-list li {
            display: flex;
            align-items: center;
            gap: .8rem;
            font-size: .92rem;
            color: var(--text-sub);
        }
        .contact-list li i {
            width: 2.25rem;
            height: 2.25rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(56, 232, 255, 0.1);
            border: 1px solid rgba(56, 232, 255, 0.25);
            color: var(--secondary);
            font-size: .85rem;
            flex-shrink: 0;
        }
        .contact-form-card {
            padding: 2rem;
        }
        .contact-form-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1.5rem;
        }
        .form-group {
            margin-bottom: 1.25rem;
        }
        .form-group label {
            display: block;
            font-size: .82rem;
            font-weight: 600;
            color: var(--text-sub);
            margin-bottom: .4rem;
            letter-spacing: .03em;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: .65rem;
            padding: .8rem 1rem;
            color: var(--text-main);
            font-size: .92rem;
            transition: border-color .3s ease, box-shadow .3s ease;
            outline: none;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-mute);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(56, 232, 255, 0.2);
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }

        /* ===== CTA banner ===== */
        .cta-banner {
            position: relative;
            padding: 4rem 0;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(7, 11, 20, 0.9), rgba(13, 20, 36, 0.85));
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(56, 232, 255, 0.25), transparent 70%);
            pointer-events: none;
        }
        .cta-banner::after {
            content: "";
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 197, 61, 0.18), transparent 70%);
            pointer-events: none;
        }
        .cta-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-banner h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: .75rem;
        }
        @media (min-width: 768px) {
            .cta-banner h2 {
                font-size: 2.4rem;
            }
        }
        .cta-banner p {
            color: var(--text-sub);
            max-width: 36rem;
            margin: 0 auto 1.75rem;
            font-size: 1rem;
        }
        .cta-banner .btn {
            margin: 0 .25rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            position: relative;
            background: #05080F;
            border-top: 1px solid transparent;
            background-image: linear-gradient(#05080F, #05080F), linear-gradient(90deg, var(--secondary), var(--accent), var(--secondary));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            padding: 3.5rem 0 1.5rem;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr;
                gap: 3rem;
            }
        }
        .brand-name {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: .6rem;
            display: flex;
            align-items: center;
            gap: .6rem;
        }
        .footer-desc {
            font-size: .88rem;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 24rem;
        }
        .footer-links-column h4 {
            font-size: .9rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
            letter-spacing: .06em;
        }
        .footer-links-column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: .55rem;
        }
        .footer-links-column a {
            font-size: .88rem;
            color: var(--text-sub);
            transition: color .3s ease, padding-left .3s ease;
        }
        .footer-links-column a:hover {
            color: var(--secondary);
            padding-left: .3rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding-top: 1.5rem;
            text-align: center;
            font-size: .82rem;
            color: var(--text-mute);
        }
        .footer-bottom a {
            color: var(--text-mute);
            transition: color .3s ease;
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== General fade-in ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity .7s ease, transform .7s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.75rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .btn {
                padding: .7rem 1.3rem;
                font-size: .88rem;
            }
            .section-head h2 {
                font-size: 1.4rem;
            }
            .plan-price .amount {
                font-size: 2.4rem;
            }
            .plan-card {
                padding: 1.5rem 1.25rem;
            }
            .contact-form-card {
                padding: 1.5rem;
            }
            .footer-grid {
                gap: 1.5rem;
            }
            .cta-banner h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: article */
:root {
  --bg-base: #070B14;
  --bg-panel: rgba(13, 20, 36, 0.72);
  --primary: #2E6BE6;
  --secondary: #38E8FF;
  --accent: #FFC53D;
  --text-main: #E6EDFF;
  --text-sub: #8B9BB4;
  --text-mute: #5A6A85;
  --border: rgba(255, 255, 255, 0.1);
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.35);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-base);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--secondary); text-decoration: none; transition: color .3s ease; }
a:hover { color: #fff; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px) {
  .container { padding: 0 32px; }
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 11, 20, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
}
.site-header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.4), transparent);
  pointer-events: none;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
@media (min-width: 768px) {
  .header-inner { height: 76px; }
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.01em;
  transition: opacity .3s ease;
  flex-shrink: 0;
}
.brand:hover { opacity: 0.85; color: #fff; }
.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
  box-shadow: 0 0 12px rgba(56, 232, 255, 0.8);
  animation: brandPulse 2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes brandPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 12px rgba(56, 232, 255, 0.8); }
  50% { opacity: 0.55; box-shadow: 0 0 22px rgba(56, 232, 255, 0.35); }
}
.main-nav {
  display: none;
  align-items: center;
  gap: 28px;
}
@media (min-width: 1024px) {
  .main-nav { display: flex; gap: 32px; }
}
.nav-link {
  position: relative;
  color: var(--text-sub);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 2px;
  white-space: nowrap;
  transition: color .3s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--secondary);
  box-shadow: 0 0 8px rgba(56, 232, 255, 0.5);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .3s ease;
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: #fff; }
.nav-link.active::after { transform: scaleX(1); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.9rem;
  line-height: 1;
  padding: 11px 24px;
  border: none;
  transition: all .3s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-gold {
  background: linear-gradient(135deg, #FFC53D, #F59E0B);
  color: #1E1B4B;
  box-shadow: 0 4px 20px rgba(255, 197, 61, 0.25);
}
.btn-gold:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 32px rgba(255, 197, 61, 0.4);
  color: #1E1B4B;
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: var(--text-main);
}
.btn-outline:hover {
  border-color: var(--secondary);
  color: var(--secondary);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(56, 232, 255, 0.12);
}
.btn-primary {
  background: linear-gradient(135deg, #2E6BE6, #38E8FF);
  color: #fff;
  box-shadow: 0 4px 20px rgba(46, 107, 230, 0.3);
}
.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 32px rgba(56, 232, 255, 0.35);
  color: #fff;
}
.header-cta { display: none; }
@media (min-width: 768px) {
  .header-cta { display: inline-flex; }
}
.mobile-toggle {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: #fff;
}
.mobile-toggle:hover { border-color: rgba(56, 232, 255, 0.4); }
@media (min-width: 1024px) {
  .mobile-toggle { display: none; }
}

/* ===== Mobile Menu ===== */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  padding: 24px 20px;
  transform: translateX(100%);
  transition: transform .35s ease;
  visibility: hidden;
}
.mobile-menu.open {
  transform: translateX(0);
  visibility: visible;
}
.mobile-menu-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}
.mobile-close {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  color: #fff;
  font-size: 1.2rem;
}
.mobile-close:hover { color: var(--secondary); border-color: rgba(56,232,255,0.35); }
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 32px;
}
.mobile-nav .nav-link {
  display: block;
  font-size: 1.35rem;
  font-weight: 600;
  padding: 14px 4px;
  color: var(--text-sub);
}
.mobile-nav .nav-link.active { color: #fff; }
.mobile-nav .nav-link.active::after {
  display: none;
}
.mobile-nav .nav-link:hover { color: var(--secondary); }
.mobile-menu .btn { width: 100%; margin-top: auto; }

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-mute);
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
}
.breadcrumb a {
  color: var(--text-sub);
  transition: color .3s ease;
}
.breadcrumb a:hover { color: var(--secondary); }
.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.25);
  font-size: 0.75rem;
}
.breadcrumb .current {
  color: var(--text-sub);
  max-width: 260px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.breadcrumb .bcategory {
  color: var(--text-sub);
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  padding: 48px 0 24px;
  background:
    radial-gradient(ellipse at 72% 16%, rgba(56, 232, 255, 0.08), transparent 58%),
    radial-gradient(ellipse at 18% 70%, rgba(46, 107, 230, 0.1), transparent 50%),
    linear-gradient(180deg, rgba(13, 20, 36, 0.35), var(--bg-base)),
    url('/assets/images/backpic/back-1.webp') center top / cover no-repeat;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.article-hero .container { position: relative; z-index: 2; }
.article-header {
  text-align: center;
  max-width: 860px;
  margin: 8px auto 0;
  padding-bottom: 24px;
}
.article-category-badge {
  display: inline-block;
  background: rgba(56, 232, 255, 0.1);
  border: 1px solid rgba(56, 232, 255, 0.25);
  color: var(--secondary);
  font-size: 0.78rem;
  font-weight: 500;
  border-radius: 9999px;
  padding: 4px 16px;
  margin-bottom: 18px;
  letter-spacing: 0.03em;
}
.article-header h1 {
  font-size: 1.85rem;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.01em;
  background: linear-gradient(135deg, #FFFFFF, #B9C9F2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
@media (min-width: 768px) {
  .article-header h1 { font-size: 2.6rem; line-height: 1.25; }
}
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 20px;
  color: var(--text-sub);
  font-size: 0.85rem;
}
.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta .sep {
  color: rgba(255, 255, 255, 0.2);
}

/* ===== Article Body ===== */
.article-body {
  padding: 40px 0 16px;
  position: relative;
}
.article-content {
  max-width: 780px;
  margin: 0 auto;
  font-size: 1.03rem;
  line-height: 1.9;
  color: var(--text-main);
  position: relative;
}
.article-content > *:last-child { margin-bottom: 0; }
.article-content p {
  margin-bottom: 24px;
  overflow-wrap: break-word;
}
.article-content a {
  color: var(--secondary);
  text-decoration: underline;
  text-decoration-color: rgba(56, 232, 255, 0.4);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}
.article-content a:hover {
  color: #fff;
  text-decoration-color: var(--secondary);
}
.article-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 42px 0 20px;
  padding-left: 14px;
  border-left: 3px solid var(--secondary);
  color: #fff;
}
.article-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 32px 0 16px;
  color: #fff;
}
.article-content h4 {
  font-size: 1.02rem;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text-main);
}
.article-content ul,
.article-content ol {
  margin-bottom: 24px;
  padding-left: 26px;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li {
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-content li::marker { color: var(--secondary); }
.article-content img {
  border-radius: var(--radius-md);
  max-width: 100%;
  height: auto;
  margin: 28px 0;
  background: #1e293b;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.article-content blockquote {
  position: relative;
  border-left: 3px solid var(--accent);
  background: rgba(255, 197, 61, 0.05);
  padding: 18px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 28px 0;
  color: var(--text-sub);
  font-style: italic;
}
.article-content pre {
  background: #0C1422;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-sm);
  padding: 20px;
  overflow-x: auto;
  margin: 28px 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: #D6E4FF;
}
.article-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 4px;
  padding: 2px 7px;
  font-size: 0.88em;
  color: var(--secondary);
}
.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: 0.95em;
}
.article-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 28px 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
}
.article-content th {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-weight: 600;
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.article-content td {
  padding: 12px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-sub);
}
.article-content tr:hover td { background: rgba(56, 232, 255, 0.03); }
@media (max-width: 640px) {
  .article-content table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}
.article-content hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.25), transparent);
  margin: 36px 0;
}

/* ===== Empty State ===== */
.article-empty {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  padding: 72px 32px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.article-empty::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.3), transparent);
}
.article-empty .empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: rgba(56, 232, 255, 0.08);
  border: 1px solid rgba(56, 232, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--secondary);
}
.article-empty p {
  font-size: 1.1rem;
  color: var(--text-sub);
  margin-bottom: 28px;
}

/* ===== Related Section ===== */
.related-section {
  padding: 56px 0 24px;
  position: relative;
}
.section-head {
  text-align: center;
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.section-head p {
  color: var(--text-sub);
  font-size: 0.925rem;
}
.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 40px;
}
@media (min-width: 768px) {
  .related-grid { grid-template-columns: repeat(3, 1fr); gap: 28px; }
}
.related-card {
  display: flex;
  flex-direction: column;
  background: rgba(13, 20, 36, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all .3s ease;
  box-shadow: var(--shadow-card);
  position: relative;
}
.related-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.18), rgba(56, 232, 255, 0.12), transparent);
  z-index: 1;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5);
}
.related-card .card-img {
  height: 160px;
  background: #1e293b;
  overflow: hidden;
  position: relative;
}
.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body {
  padding: 20px 20px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.related-card .card-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 500;
  background: rgba(56, 232, 255, 0.1);
  border: 1px solid rgba(56, 232, 255, 0.2);
  color: var(--secondary);
  border-radius: 9999px;
  padding: 2px 12px;
  margin-bottom: 12px;
}
.related-card .card-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-main);
  margin-bottom: 10px;
  transition: color .3s ease;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card:hover .card-title { color: var(--secondary); }
.related-card .card-date {
  margin-top: auto;
  font-size: 0.78rem;
  color: var(--text-mute);
  display: flex;
  align-items: center;
  gap: 6px;
}
.related-footer {
  text-align: center;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 56px 0 16px;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: rgba(13, 20, 36, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  transition: all .3s ease;
  position: relative;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  cursor: pointer;
}
.faq-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.15), transparent);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.faq-item:hover { border-color: rgba(255, 255, 255, 0.18); }
.faq-item.open {
  border-color: rgba(56, 232, 255, 0.35);
  box-shadow: 0 8px 32px rgba(56, 232, 255, 0.06);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
}
.faq-chevron {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  color: var(--text-sub);
  transition: transform .35s ease, color .35s ease;
}
.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  color: var(--secondary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  font-size: 0.925rem;
  line-height: 1.85;
  color: var(--text-sub);
}
.faq-item.open .faq-answer {
  max-height: 320px;
  padding-top: 14px;
}

/* ===== CTA Band ===== */
.cta-band {
  padding: 48px 0 64px;
  position: relative;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 75% 40%, rgba(56, 232, 255, 0.1), transparent 60%),
    radial-gradient(ellipse at 20% 60%, rgba(255, 197, 61, 0.07), transparent 50%);
  pointer-events: none;
}
.cta-inner {
  background: rgba(13, 20, 36, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 48px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.cta-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.4), rgba(255, 197, 61, 0.3), transparent);
}
.cta-inner h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
  position: relative;
}
@media (min-width: 768px) {
  .cta-inner h2 { font-size: 1.8rem; }
}
.cta-inner p {
  color: var(--text-sub);
  font-size: 0.95rem;
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ===== Footer ===== */
.site-footer {
  background: rgba(7, 11, 20, 0.9);
  padding: 56px 0 0;
  border-top: 1px solid transparent;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.35), rgba(255, 197, 61, 0.25), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 40px;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; }
}
.footer-brand .brand-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand .brand-name::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
  box-shadow: 0 0 10px rgba(56, 232, 255, 0.7);
  flex-shrink: 0;
}
.footer-desc {
  color: var(--text-sub);
  font-size: 0.875rem;
  line-height: 1.8;
  max-width: 320px;
}
.footer-links-column h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}
.footer-links-column ul { list-style: none; }
.footer-links-column li { margin-bottom: 10px; }
.footer-links-column a {
  color: var(--text-sub);
  font-size: 0.875rem;
  transition: all .3s ease;
}
.footer-links-column a:hover {
  color: var(--secondary);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  text-align: center;
  color: var(--text-mute);
  font-size: 0.8rem;
}
.footer-bottom a { color: var(--text-mute); }
.footer-bottom a:hover { color: var(--secondary); }

/* ===== Utility ===== */
.text-gradient {
  background: linear-gradient(135deg, #FFFFFF, #B9C9F2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #0A0F1C; }
::-webkit-scrollbar-thumb { background: #1E2A42; border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: #2A3A58; }

/* roulang page: category3 */
:root {
            --bg-base: #070B14;
            --bg-panel: rgba(13, 20, 36, 0.72);
            --primary: #2E6BE6;
            --secondary: #38E8FF;
            --accent: #FFC53D;
            --text-main: #E6EDFF;
            --text-sub: #8B9BB4;
            --text-mute: #5A6A85;
            --success: #34D399;
            --warning: #FBBF24;
            --error: #F87171;
            --radius-card: 1rem;
            --radius-btn: 9999px;
            --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.35);
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .bg-base {
            background-color: var(--bg-base);
        }

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

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

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

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

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

        /* ============ Header / Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(7, 11, 20, 0.78);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            background-image: linear-gradient(rgba(7, 11, 20, 0.78), rgba(7, 11, 20, 0.78)), linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.4), transparent);
            background-clip: padding-box, border-box;
            background-origin: padding-box, border-box;
            border-bottom: 1px solid transparent;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }

        @media (min-width: 768px) {
            .header-inner {
                height: 80px;
            }
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }

        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--secondary);
            box-shadow: 0 0 12px var(--secondary), 0 0 30px rgba(56, 232, 255, 0.5);
            animation: pulse-dot 2s ease-in-out infinite;
            flex-shrink: 0;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.65;
                transform: scale(0.82);
            }
        }

        .brand-text {
            font-size: 1.25rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-main);
            transition: color 0.3s ease;
            white-space: nowrap;
        }

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

        .main-nav {
            display: none;
            align-items: center;
            gap: 0.25rem;
        }

        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
        }

        .main-nav .nav-link {
            position: relative;
            padding: 0.5rem 0.9rem;
            font-size: 0.925rem;
            color: var(--text-sub);
            border-radius: 8px;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .main-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%) scaleX(0);
            width: 70%;
            height: 2px;
            background: var(--secondary);
            box-shadow: 0 0 8px rgba(56, 232, 255, 0.6);
            border-radius: 999px;
            transition: transform 0.3s ease;
        }

        .main-nav .nav-link:hover {
            color: #ffffff;
        }

        .main-nav .nav-link:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .main-nav .nav-link.active {
            color: #ffffff;
            font-weight: 600;
        }

        .main-nav .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .header-cta {
            display: none;
            background: var(--accent);
            color: #1E1B4B;
            font-weight: 600;
            font-size: 0.875rem;
            padding: 0.55rem 1.4rem;
            border-radius: var(--radius-btn);
            transition: all 0.3s ease;
            box-shadow: 0 0 20px rgba(255, 197, 61, 0.35);
            white-space: nowrap;
        }

        .header-cta:hover {
            box-shadow: 0 0 32px rgba(255, 197, 61, 0.55);
            transform: scale(1.04);
        }

        @media (min-width: 1024px) {
            .header-cta {
                display: inline-block;
            }
        }

        .menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-main);
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        @media (min-width: 1024px) {
            .menu-toggle {
                display: none;
            }
        }

        /* 移动端抽屉菜单 */
        .mobile-drawer {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 80;
            background: rgba(7, 11, 20, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 1.5rem 1.5rem 2rem;
            flex-direction: column;
        }

        .mobile-drawer.open {
            display: flex;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 2.5rem;
        }

        .drawer-close {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: transparent;
            color: var(--text-main);
            font-size: 1.25rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .drawer-close:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            flex: 1;
        }

        .drawer-nav a {
            font-size: 1.6rem;
            font-weight: 600;
            color: var(--text-sub);
            padding: 0.75rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: color 0.3s ease, border-color 0.3s ease;
        }

        .drawer-nav a:hover,
        .drawer-nav a.active {
            color: var(--text-main);
            border-bottom-color: rgba(56, 232, 255, 0.4);
        }

        .drawer-cta {
            width: 100%;
            background: var(--accent);
            color: #1E1B4B;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.9rem 0;
            text-align: center;
            border-radius: var(--radius-btn);
            margin-top: 1.5rem;
            box-shadow: 0 0 24px rgba(255, 197, 61, 0.35);
        }

        /* ============ Hero ============ */
        .page-hero {
            position: relative;
            min-height: 52vh;
            display: flex;
            align-items: center;
            padding: 5rem 0 4rem;
            overflow: hidden;
            background-color: var(--bg-base);
        }

        @media (min-width: 768px) {
            .page-hero {
                min-height: 60vh;
            }
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: -30%;
            left: -10%;
            width: 560px;
            height: 560px;
            background: radial-gradient(circle, rgba(46, 107, 230, 0.35), transparent 65%);
            pointer-events: none;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(56, 232, 255, 0.2), transparent 60%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            gap: 3rem;
            align-items: center;
        }

        @media (min-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1.05fr 0.95fr;
            }
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(56, 232, 255, 0.1);
            border: 1px solid rgba(56, 232, 255, 0.25);
            color: var(--secondary);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 0.35rem 1rem;
            border-radius: var(--radius-btn);
            margin-bottom: 1.25rem;
        }

        .hero-title {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            color: var(--text-main);
        }

        @media (min-width: 768px) {
            .hero-title {
                font-size: 3.6rem;
            }
        }

        .hero-title .highlight {
            background: linear-gradient(90deg, var(--accent), #FFE4A0);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-sub {
            font-size: 1.05rem;
            color: var(--text-sub);
            max-width: 30rem;
            margin-bottom: 2rem;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.8rem 1.8rem;
            border-radius: var(--radius-btn);
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: #07101f;
            box-shadow: 0 4px 24px rgba(46, 107, 230, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 36px rgba(56, 232, 255, 0.4);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--text-main);
            backdrop-filter: blur(4px);
        }

        .btn-ghost:hover {
            border-color: rgba(56, 232, 255, 0.5);
            color: var(--secondary);
            box-shadow: 0 0 20px rgba(56, 232, 255, 0.1);
            transform: translateY(-2px);
        }

        .btn-gold {
            background: var(--accent);
            color: #1E1B4B;
            box-shadow: 0 4px 24px rgba(255, 197, 61, 0.35);
        }

        .btn-gold:hover {
            box-shadow: 0 8px 36px rgba(255, 197, 61, 0.5);
            transform: scale(1.03) translateY(-2px);
        }

        .btn-gold:active {
            transform: translateY(1px) scale(1);
        }

        .hero-media {
            position: relative;
        }

        .hero-media::before {
            content: "";
            position: absolute;
            inset: -1px;
            border-radius: 1.5rem;
            padding: 1px;
            background: linear-gradient(135deg, rgba(56, 232, 255, 0.5), rgba(255, 255, 255, 0.05), rgba(255, 197, 61, 0.3));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
            z-index: 1;
        }

        .hero-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            border-radius: 1.5rem;
            background-color: rgba(15, 23, 42, 0.8);
            box-shadow: var(--shadow-card);
        }

        @media (min-width: 768px) {
            .hero-media img {
                height: 400px;
            }
        }

        /* ============ Stats Bar ============ */
        .stats-section {
            padding: 2.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .stat-card {
            text-align: center;
            padding: 1.25rem 1rem;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--secondary), #7ae0ff);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 0.3rem;
        }

        .stat-label {
            font-size: 0.875rem;
            color: var(--text-sub);
        }

        /* ============ Section Shared ============ */
        .section {
            padding: 4rem 0;
        }

        @media (min-width: 768px) {
            .section {
                padding: 5rem 0;
            }
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 3rem;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--secondary);
            background: rgba(56, 232, 255, 0.08);
            border: 1px solid rgba(56, 232, 255, 0.15);
            padding: 0.3rem 1rem;
            border-radius: var(--radius-btn);
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 1rem;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2.4rem;
            }
        }

        .section-desc {
            color: var(--text-sub);
            font-size: 1rem;
            line-height: 1.8;
        }

        /* ============ Promo Cards ============ */
        .promo-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .promo-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .promo-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .promo-card {
            position: relative;
            border-radius: 1.25rem;
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.09);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .promo-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
            z-index: 1;
        }

        .promo-card:hover {
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
        }

        .promo-card-image {
            height: 160px;
            overflow: hidden;
            position: relative;
            background: #0f172a;
        }

        .promo-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .promo-card:hover .promo-card-image img {
            transform: scale(1.05);
        }

        .promo-card-badge {
            position: absolute;
            top: 0.9rem;
            right: 0.9rem;
            background: var(--accent);
            color: #1E1B4B;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.25rem 0.75rem;
            border-radius: var(--radius-btn);
            box-shadow: 0 2px 12px rgba(255, 197, 61, 0.4);
            z-index: 2;
            white-space: nowrap;
        }

        .promo-card-body {
            padding: 1.5rem 1.25rem 1.25rem;
        }

        .promo-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-main);
        }

        .promo-card-text {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .promo-card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--secondary);
            transition: gap 0.3s ease;
        }

        .promo-card-link:hover {
            gap: 0.6rem;
            color: #fff;
        }

        /* ============ Countdown / Limited ============ */
        .limited-section {
            position: relative;
            padding: 4.5rem 0;
            overflow: hidden;
            border-top: 1px solid transparent;
            border-bottom: 1px solid transparent;
            background-image: linear-gradient(rgba(7, 11, 20, 0.9), rgba(7, 11, 20, 0.9)), linear-gradient(90deg, rgba(56, 232, 255, 0.3), rgba(255, 197, 61, 0.2));
            background-clip: padding-box, border-box;
            background-origin: padding-box, border-box;
            border-top: 1px solid transparent;
            border-bottom: 1px solid transparent;
        }

        .limited-section::before {
            content: "";
            position: absolute;
            top: -40%;
            left: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(56, 232, 255, 0.18), transparent 60%);
            pointer-events: none;
        }

        .limited-section::after {
            content: "";
            position: absolute;
            bottom: -50%;
            right: -10%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(255, 197, 61, 0.16), transparent 55%);
            pointer-events: none;
        }

        .limited-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .limited-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.75rem;
        }

        @media (min-width: 768px) {
            .limited-title {
                font-size: 2.3rem;
            }
        }

        .limited-desc {
            color: var(--text-sub);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        .countdown {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .countdown-item {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1rem;
            padding: 0.9rem 1rem;
            min-width: 78px;
            text-align: center;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .countdown-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .countdown-label {
            font-size: 0.7rem;
            color: var(--text-sub);
            margin-top: 0.15rem;
        }

        @media (min-width: 768px) {
            .countdown-item {
                min-width: 90px;
                padding: 1rem 1.25rem;
            }

            .countdown-number {
                font-size: 2.2rem;
            }
        }

        /* ============ Steps ============ */
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.75rem;
        }

        @media (min-width: 768px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .step-card {
            position: relative;
            padding: 1.75rem 1.5rem;
            border-radius: 1.25rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.07);
            transition: border-color 0.3s ease, transform 0.3s ease, background 0.3s ease;
        }

        .step-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.18), transparent);
        }

        .step-card:hover {
            border-color: rgba(56, 232, 255, 0.25);
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.06);
        }

        .step-number {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
        }

        .step-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.5rem;
        }

        .step-text {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ============ Rules / Notice ============ */
        .rules-section {
            background: rgba(13, 20, 36, 0.5);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .rules-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }

        @media (min-width: 1024px) {
            .rules-grid {
                grid-template-columns: 1fr 1fr;
                gap: 3rem;
            }
        }

        .rules-list {
            list-style: none;
            padding: 0;
        }

        .rules-list li {
            position: relative;
            padding: 0.75rem 0 0.75rem 2rem;
            color: var(--text-sub);
            font-size: 0.95rem;
            line-height: 1.7;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

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

        .rules-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 1.25rem;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--secondary);
            box-shadow: 0 0 8px rgba(56, 232, 255, 0.5);
        }

        .rules-card {
            border-radius: 1.25rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.75rem;
            position: relative;
            overflow: hidden;
        }

        .rules-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 197, 61, 0.5), transparent);
        }

        .rules-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
        }

        .rules-card p {
            font-size: 0.925rem;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            border-radius: 1rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            overflow: hidden;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.15);
        }

        .faq-item.open {
            border-color: rgba(56, 232, 255, 0.35);
            background: rgba(255, 255, 255, 0.05);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            cursor: pointer;
            color: var(--text-main);
            font-size: 0.98rem;
            font-weight: 600;
            transition: color 0.3s ease;
        }

        .faq-question:hover {
            color: #ffffff;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--secondary);
            font-size: 0.85rem;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            background: rgba(56, 232, 255, 0.1);
            border-color: rgba(56, 232, 255, 0.4);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 1.5rem;
            color: var(--text-sub);
            font-size: 0.925rem;
            line-height: 1.8;
            transition: max-height 0.35s ease, padding 0.35s ease, opacity 0.3s ease;
            opacity: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.25rem;
            opacity: 1;
        }

        /* ============ CTA / Contact ============ */
        .cta-section {
            position: relative;
            padding: 4rem 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 232, 255, 0.4), transparent);
            pointer-events: none;
        }

        .cta-card {
            position: relative;
            border-radius: 1.5rem;
            background: rgba(13, 20, 36, 0.8);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 2.5rem 1.5rem;
            text-align: center;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
        }

        .cta-card::after {
            content: "";
            position: absolute;
            bottom: -30%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 197, 61, 0.12), transparent 60%);
            pointer-events: none;
        }

        @media (min-width: 768px) {
            .cta-card {
                padding: 3.5rem 3rem;
            }
        }

        .cta-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.75rem;
        }

        @media (min-width: 768px) {
            .cta-title {
                font-size: 2rem;
            }
        }

        .cta-desc {
            color: var(--text-sub);
            font-size: 1rem;
            max-width: 520px;
            margin: 0 auto 1.75rem;
            line-height: 1.8;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: rgba(7, 11, 20, 0.95);
            border-top: 1px solid transparent;
            background-image: linear-gradient(rgba(7, 11, 20, 0.95), rgba(7, 11, 20, 0.95)), linear-gradient(90deg, rgba(56, 232, 255, 0.3), rgba(255, 197, 61, 0.2));
            background-clip: padding-box, border-box;
            background-origin: padding-box, border-box;
            border-top: 1px solid transparent;
            padding: 3.5rem 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            padding-bottom: 2.5rem;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr;
            }
        }

        .footer-brand .brand-name {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.75rem;
        }

        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-links-column h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 1rem;
        }

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

        .footer-links-column li {
            margin-bottom: 0.6rem;
        }

        .footer-links-column a {
            font-size: 0.9rem;
            color: var(--text-sub);
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer-links-column a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 1.25rem 0;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-mute);
        }

        .footer-bottom a {
            color: var(--text-mute);
            transition: color 0.3s ease;
        }

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

        /* ============ Glass Card Highligh ============ */
        .glass-card {
            position: relative;
            border-radius: 1.25rem;
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-card);
        }

        .glass-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            border-radius: 1.25rem 1.25rem 0 0;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            pointer-events: none;
        }

        /* ============ Responsive fine-tune ============ */
        @media (max-width: 639px) {
            .hero-actions .btn {
                width: 100%;
            }
            .countdown {
                gap: 0.6rem;
            }
            .countdown-item {
                min-width: 68px;
                padding: 0.7rem 0.65rem;
            }
            .countdown-number {
                font-size: 1.5rem;
            }
        }