/* roulang page: index */
:root {
        --bg-primary: #070B12;
        --bg-secondary: #0D1420;
        --bg-deep: #05080F;
        --glass-bg: rgba(255, 255, 255, 0.05);
        --glass-border: rgba(255, 255, 255, 0.1);
        --border-accent: rgba(0, 224, 255, 0.4);
        --main-color: #00E0FF;
        --main-deep: #0066FF;
        --accent-gold: #F5B301;
        --text-main: #E8EDF5;
        --text-secondary: #A7B4C3;
        --text-muted: #5D6B7E;
        --radius: 16px;
        --radius-sm: 10px;
        --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
        --shadow-cyan: 0 0 24px rgba(0, 224, 255, 0.25);
        --shadow-gold: 0 0 24px rgba(245, 179, 1, 0.25);
        --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
        --spacing-section: 80px;
        --spacing-section-mobile: 48px;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        font-family: var(--font-sans);
        background: var(--bg-primary);
        color: var(--text-main);
        line-height: 1.75;
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        font-weight: 700;
        line-height: 1.3;
        color: var(--text-main);
    }

    h1 {
        font-size: 2.5rem;
    }
    h2 {
        font-size: 1.9rem;
    }
    h3 {
        font-size: 1.3rem;
    }

    a {
        color: var(--main-color);
        text-decoration: none;
        transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
    }

    a:hover {
        color: #8aefc0;
        color: #7ae9ff;
    }

    img {
        max-width: 100%;
        height: auto;
        border-radius: var(--radius-sm);
    }

    .container {
        max-width: 1200px;
    }

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

    .section-title {
        text-align: center;
        margin-bottom: 48px;
    }

    .section-title h2 {
        font-size: 2rem;
        position: relative;
        display: inline-block;
        margin-bottom: 12px;
    }

    .section-title p {
        color: var(--text-secondary);
        max-width: 640px;
        margin: 0 auto;
    }

    .text-muted {
        color: var(--text-muted) !important;
    }
    .text-muted-alt {
        color: var(--text-secondary);
    }

    .btn {
        border-radius: 12px;
        font-weight: 600;
        padding: 14px 28px;
        transition: all 0.3s ease;
    }

    .btn-ghost {
        border: none;
        background: linear-gradient(135deg, var(--main-color) 0%, var(--main-deep) 100%);
        color: #fff;
        box-shadow: 0 0 18px rgba(0, 224, 255, 0.35);
        padding: 14px 32px;
        border-radius: 12px;
    }

    .btn-ghost:hover {
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 0 28px rgba(0, 224, 255, 0.5);
    }

    .btn-outline {
        background: transparent;
        border: 1px solid rgba(255, 255, 255, 0.3);
        color: var(--main-color);
        padding: 13px 30px;
        border-radius: 12px;
    }

    .btn-outline:hover {
        border-color: var(--main-color);
        background: rgba(0, 224, 255, 0.06);
        color: var(--main-color);
        transform: translateY(-2px);
    }

    .btn-nav {
        background: linear-gradient(135deg, var(--main-color) 0%, var(--main-deep) 100%);
        color: #fff;
        border: none;
        padding: 9px 22px;
        border-radius: 10px;
        font-weight: 600;
        font-size: 0.9375rem;
        box-shadow: 0 0 14px rgba(0, 224, 255, 0.3);
        transition: all 0.3s ease;
    }

    .btn-nav:hover {
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 0 22px rgba(0, 224, 255, 0.5);
    }

    /* 导航 */
    .site-navbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(7, 11, 18, 0.6);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        min-height: 72px;
        transition: background 0.3s ease, box-shadow 0.3s ease;
    }

    .site-navbar.scrolled {
        background: rgba(7, 11, 18, 0.88);
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    }

    .site-navbar .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 72px;
        flex-wrap: nowrap;
    }

    .navbar-brand {
        font-size: 1.15rem;
        font-weight: 800;
        color: var(--text-main);
        padding: 10px 0;
        white-space: nowrap;
    }

    .navbar-brand .brand-accent {
        background: linear-gradient(135deg, var(--main-color), #7ae9ff);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }

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

    .navbar-nav {
        display: flex;
        gap: 4px;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .navbar-nav .nav-link {
        color: var(--text-secondary);
        font-weight: 500;
        padding: 8px 14px;
        border-radius: 10px;
        font-size: 0.9375rem;
        line-height: 1.5;
        transition: all 0.25s ease;
    }

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

    .navbar-nav .nav-link.active {
        color: var(--main-color);
        background: rgba(0, 224, 255, 0.08);
      box-shadow: inset 0 0 0 1px rgba(0,224,255,0.15);
    }

    .nav-cta {
        margin-left: 12px;
        flex-shrink: 0;
    }

    .navbar-toggler {
        border: 1px solid rgba(255, 255, 255, 0.2);
        background: rgba(255, 255, 255, 0.04);
        border-radius: 8px;
        padding: 8px 12px;
    }

    .navbar-toggler .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28232,237,245,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    @media (max-width: 991.98px) {
        .navbar-collapse {
            background: rgba(7, 11, 18, 0.95);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            margin-top: 10px;
            padding: 18px;
        }

        .navbar-nav {
            flex-direction: column;
            gap: 6px;
        }

        .nav-cta {
            margin-left: 0;
            margin-top: 12px;
        }

        .btn-nav {
            width: 100%;
            text-align: center;
        }
    }

    /* 首屏 */
    .hero-section {
        min-height: 85vh;
        display: flex;
        align-items: center;
        position: relative;
        background: linear-gradient(180deg, rgba(7, 11, 18, 0.55) 0%, rgba(7, 11, 18, 0.88) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        overflow: hidden;
        padding-top: 72px;
    }

    .hero-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background-image: linear-gradient(rgba(0, 224, 255, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 224, 255, 0.06) 1px, transparent 1px);
        background-size: 48px 48px;
        pointer-events: none;
    }

    .hero-section::after {
        content: '';
        position: absolute;
        width: 480px;
        height: 480px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(0, 224, 255, 0.15) 0%, transparent 70%);
        top: 20%;
        right: -140px;
        pointer-events: none;
    }

    .hero-content {
        text-align: center;
        max-width: 860px;
        margin: 0 auto;
        position: relative;
        z-index: 2;
        padding: 60px 20px;
    }

    .hero-content h1 {
        font-size: 2.6rem;
        font-weight: 800;
        letter-spacing: 0.02em;
        margin-bottom: 18px;
    }

    .hero-sub {
        color: var(--text-secondary);
        font-size: 1.1rem;
        max-width: 600px;
        margin: 0 auto 34px;
    }

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

    .hero-scroll {
        position: absolute;
        bottom: 32px;
        left: 50%;
        transform: translateX(-50%);
        color: var(--text-muted);
        font-size: 1.4rem;
        animation: scroll-bounce 2s infinite;
        z-index: 2;
        transition: color 0.3s;
    }

    .hero-scroll:hover {
        color: var(--main-color);
    }

    @keyframes scroll-bounce {
        0%, 100% { transform: translateX(-50%) translateY(0); }
        50% { transform: translateX(-50%) translateY(8px); }
    }

    /* 玻璃卡片 */
    .glass-card {
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-radius: var(--radius);
        padding: 24px;
        transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .glass-card:hover {
        transform: translateY(-4px);
        border-color: var(--border-accent);
        box-shadow: 0 12px 32px rgba(0, 224, 255, 0.08);
    }

    /* 玩法介绍 */
    .game-section {
        background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    }

    .game-grid {
        display: grid;
        grid-template-columns: 1fr 1.25fr 1fr;
        gap: 24px;
        align-items: center;
    }

    .game-card {
        display: flex;
        flex-direction: column;
        min-height: 360px;
        position: relative;
        overflow: hidden;
    }

    .game-card-img {
        position: relative;
        height: 180px;
        border-radius: 12px;
        overflow: hidden;
        margin-bottom: 20px;
    }

    .game-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .game-card-img::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(7, 11, 18, 0.1) 0%, rgba(7, 11, 18, 0.6) 100%);
    }

    .game-card-body {
        position: relative;
        flex: 1;
    }

    .game-card-body .icon {
        width: 52px;
        height: 52px;
        border-radius: 14px;
        background: linear-gradient(135deg, rgba(0, 224, 255, 0.2), rgba(0, 224, 255, 0.05));
        border: 1px solid rgba(0, 224, 255, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--main-color);
        font-size: 1.3rem;
        margin-bottom: 16px;
    }

    .game-card-body h3 {
        font-size: 1.15rem;
        margin-bottom: 8px;
    }

    .game-card-body p {
        color: var(--text-secondary);
        font-size: 0.9375rem;
        margin-bottom: 16px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .game-card-body .more-link {
        color: var(--main-color);
        font-weight: 600;
        font-size: 0.9375rem;
        transition: all 0.3s;
    }

    .game-card-body .more-link:hover {
        color: #7ae9ff;
        text-decoration: underline;
    }

    .game-card-featured {
        transform: translateY(-16px);
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
        border-color: rgba(0, 224, 255, 0.3);
        box-shadow: 0 0 40px rgba(0, 224, 255, 0.1);
    }

    .game-card-featured:hover {
        transform: translateY(-20px);
    }

    /* 奖励预览 */
    .reward-section {
        background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    }

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

    .reward-card {
        text-align: center;
        padding: 36px 24px;
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius);
        backdrop-filter: blur(16px);
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
    }

    .reward-card:hover {
        border-color: var(--border-accent);
        transform: translateY(-4px);
        box-shadow: 0 12px 32px rgba(0, 224, 255, 0.08);
    }

    .reward-card .reward-icon {
        font-size: 2.2rem;
        margin-bottom: 14px;
        color: var(--text-muted);
    }

    .reward-card:nth-child(1) .reward-icon {
        color: var(--accent-gold);
    }
    .reward-card:nth-child(2) .reward-icon {
        color: #E4E7EB;
    }
    .reward-card:nth-child(3) .reward-icon {
        color: var(--accent-gold);
    }
    .reward-card:nth-child(4) .reward-icon {
        color: var(--main-color);
    }

    .reward-card h4 {
        font-size: 1.05rem;
        margin-bottom: 6px;
    }

    .reward-card p {
        color: var(--text-secondary);
        font-size: 0.875rem;
        line-height: 1.6;
        margin-bottom: 0;
    }

    .reward-special {
        background: linear-gradient(145deg, rgba(245, 179, 1, 0.15), rgba(245, 179, 1, 0.03));
        border-color: rgba(245, 179, 1, 0.3);
        transform: scale(1.05);
    }

    .reward-special:hover {
        border-color: rgba(245, 179, 1, 0.6);
        box-shadow: 0 12px 32px rgba(245, 179, 1, 0.12);
    }

    .reward-special .reward-tag {
        position: absolute;
        top: 12px;
        right: 12px;
        background: rgba(245, 179, 1, 0.15);
        border: 1px solid rgba(245, 179, 1, 0.3);
        color: var(--accent-gold);
        font-size: 0.75rem;
        padding: 2px 10px;
        border-radius: 20px;
        font-weight: 600;
    }

    /* 任务步骤 */
    .steps-section {
        background: var(--bg-primary);
    }

    .steps-wrap {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        position: relative;
        max-width: 1000px;
        margin: 0 auto;
    }

    .steps-wrap::before {
        content: '';
        position: absolute;
        top: 24px;
        left: 80px;
        right: 80px;
        height: 2px;
        background: rgba(255, 255, 255, 0.12);
        z-index: 0;
    }

    .step-item {
        text-align: center;
        padding: 0 16px;
        position: relative;
        z-index: 1;
        max-width: 200px;
    }

    .step-dot {
        width: 48px;
        height: 48px;
        border-radius: 50%;
        border: 2px solid rgba(255, 255, 255, 0.25);
        background: var(--bg-primary);
        margin: 0 auto 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
        color: var(--text-muted);
        position: relative;
        z-index: 1;
    }

    .step-item.completed .step-dot {
        background: var(--main-color);
        border-color: var(--main-color);
        color: #fff;
        box-shadow: 0 0 14px rgba(0, 224, 255, 0.6);
    }

    .step-item.active .step-dot {
        background: var(--accent-gold);
        border-color: var(--accent-gold);
        color: #fff;
        box-shadow: 0 0 14px rgba(245, 179, 1, 0.6);
    }

    .step-item h4 {
        font-size: 1.05rem;
        margin-bottom: 6px;
    }

    .step-item p {
        color: var(--text-secondary);
        font-size: 0.875rem;
        line-height: 1.5;
    }

    .steps-wrap::before {
        background: linear-gradient(90deg, var(--main-color) 0%, var(--main-color) 50%, rgba(255,255,255,0.12) 50%);
        opacity: 0.8;
    }

    /* 参与CTA */
    .cta-section {
        background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
        padding: 100px 0;
        text-align: center;
    }

    .cta-section h2 {
        font-size: 2rem;
        margin-bottom: 12px;
    }

    .cta-section p {
        color: var(--text-secondary);
        max-width: 560px;
        margin: 0 auto 36px;
    }

    .cta-pulse {
        display: inline-block;
        background: linear-gradient(135deg, var(--main-color) 0%, var(--main-deep) 100%);
        color: #fff;
        border: none;
        padding: 16px 44px;
        border-radius: 14px;
        font-size: 1.05rem;
        font-weight: 700;
        box-shadow: 0 0 24px rgba(0, 224, 255, 0.4);
        animation: pulse-glow 2.2s infinite;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .cta-pulse:hover {
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 0 32px rgba(0, 224, 255, 0.6);
    }

    @keyframes pulse-glow {
        0%, 100% { box-shadow: 0 0 18px rgba(0, 224, 255, 0.3); }
        50% { box-shadow: 0 0 34px rgba(0, 224, 255, 0.55); }
    }

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

    .news-list {
        max-width: 900px;
        margin: 0 auto;
    }

    .news-item {
        display: flex;
        align-items: center;
        gap: 20px;
        padding: 20px 18px;
        border-radius: 14px;
        border-left: 4px solid transparent;
        background: rgba(255, 255, 255, 0.03);
        border: 1px solid rgba(255, 255, 255, 0.06);
        margin-bottom: 14px;
        transition: all 0.3s ease;
    }

    .news-item:hover {
        border-left-color: var(--main-color);
        background: rgba(0, 224, 255, 0.04);
        transform: translateX(4px);
        box-shadow: 0 4px 20px rgba(0, 224, 255, 0.06);
    }

    .news-badge {
        flex-shrink: 0;
        padding: 4px 12px;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 600;
        color: var(--main-color);
        background: rgba(0, 224, 255, 0.1);
        border: 1px solid rgba(0, 224, 255, 0.2);
        white-space: nowrap;
    }

    .news-main {
        flex: 1;
        min-width: 0;
    }

    .news-title {
        font-size: 1rem;
        margin-bottom: 2px;
        font-weight: 600;
    }

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

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

    .news-summary {
        color: var(--text-secondary);
        font-size: 0.875rem;
        margin: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 540px;
    }

    .news-time {
        flex-shrink: 0;
        color: var(--text-muted);
        font-size: 0.875rem;
        white-space: nowrap;
    }

    .news-empty {
        text-align: center;
        color: var(--text-muted);
        padding: 40px 0;
        border: 1px dashed rgba(255, 255, 255, 0.1);
        border-radius: var(--radius);
        font-size: 0.9375rem;
    }

    /* FAQ */
    .faq-section {
        background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    }

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

    .faq-card {
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        border-radius: 14px;
        margin-bottom: 14px;
        overflow: hidden;
        backdrop-filter: blur(16px);
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .faq-card:hover {
        border-color: rgba(0, 224, 255, 0.2);
    }

    .faq-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        background: transparent;
        border: none;
        color: var(--text-main);
        padding: 20px 24px;
        font-size: 1rem;
        font-weight: 600;
        text-align: left;
        gap: 16px;
    }

    .faq-icon {
        width: 28px;
        height: 28px;
        border-radius: 50%;
        background: rgba(0, 224, 255, 0.1);
        border: 1px solid rgba(0, 224, 255, 0.2);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--main-color);
        font-size: 0.8rem;
        flex-shrink: 0;
        transition: transform 0.3s ease;
    }

    .faq-toggle[aria-expanded="true"] .faq-icon {
        transform: rotate(45deg);
        background: rgba(0, 224, 255, 0.2);
    }

    .faq-body {
        padding: 0 24px 20px;
        color: var(--text-secondary);
        font-size: 0.9375rem;
        line-height: 1.75;
    }

    /* 页脚 */
    .site-footer {
        background: var(--bg-deep);
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 60px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 40px;
    }

    .footer-brand-name {
        font-size: 1.1rem;
        font-weight: 800;
        color: var(--text-main);
        margin-bottom: 10px;
    }

    .footer-brand-desc {
        color: var(--text-muted);
        font-size: 0.9rem;
        line-height: 1.7;
    }

    .footer-title {
        font-size: 0.9375rem;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 14px;
    }

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

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

    .footer-links-list a {
        color: var(--text-secondary);
        font-size: 0.9rem;
        transition: color 0.2s;
    }

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

    .footer-contact-info {
        color: var(--text-secondary);
        font-size: 0.9rem;
        line-height: 2;
    }

    .footer-contact-info i {
        color: var(--main-color);
        margin-right: 8px;
        font-size: 0.85rem;
        width: 18px;
    }

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        padding: 20px 0;
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 0.85rem;
        color: var(--text-muted);
    }

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

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

    /* 响应式 */
    @media (max-width: 1199px) {
        .game-grid {
            grid-template-columns: 1fr 1fr;
        }

        .game-card-featured {
            transform: none;
            order: -1;
            grid-column: 1 / -1;
        }

        .game-card-featured:hover {
            transform: translateY(-4px);
        }

        .steps-wrap {
            gap: 20px;
        }
    }

    @media (max-width: 991.98px) {
        .section {
            padding: var(--spacing-section-mobile) 0;
        }

        h1 {
            font-size: 2rem;
        }

        .hero-content h1 {
            font-size: 1.9rem;
        }

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

        .reward-special {
            transform: none;
        }

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

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

    @media (max-width: 767.98px) {
        .game-grid {
            grid-template-columns: 1fr;
        }

        .game-card-featured {
            grid-column: auto;
        }

        .steps-wrap {
            flex-direction: column;
            gap: 28px;
            max-width: 320px;
        }

        .steps-wrap::before {
            display: none;
        }

        .step-item {
            max-width: 100%;
            display: flex;
            gap: 16px;
            text-align: left;
            align-items: flex-start;
        }

        .step-dot {
            margin: 0;
            flex-shrink: 0;
        }

        .news-item {
            flex-wrap: wrap;
            gap: 10px;
        }

        .news-summary {
            white-space: normal;
        }

        .news-time {
            margin-left: auto;
        }

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

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

    @media (max-width: 575.98px) {
        .hero-content {
            padding: 40px 16px;
        }

        .hero-content h1 {
            font-size: 1.6rem;
        }

        .hero-actions {
            flex-direction: column;
            width: 100%;
        }

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

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

        .reward-special {
            transform: none;
        }
    }

/* roulang page: category1 */
:root {
            --bg-primary: #070B12;
            --bg-secondary: #0D1420;
            --bg-tertiary: #0A101A;
            --surface-glass: rgba(255, 255, 255, 0.05);
            --surface-border: rgba(255, 255, 255, 0.10);
            --accent: #00E0FF;
            --accent-rgb: 0, 224, 255;
            --accent-deep: #0066FF;
            --gold: #F5B301;
            --text-primary: #E8EDF5;
            --text-secondary: #A7B4C3;
            --text-muted: #5D6B7E;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-accent: 0 0 18px rgba(0, 224, 255, 0.35);
            --shadow-card: 0 12px 32px rgba(0, 224, 255, 0.08);
            --shadow-gold: 0 0 22px rgba(245, 179, 1, 0.25);
            --transition: all .3s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: #fff;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        .section {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
        }

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

        .text-gold {
            color: var(--gold) !important;
        }

        .section-head {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 56px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-size: .875rem;
            font-weight: 600;
            letter-spacing: .04em;
            text-transform: uppercase;
            margin-bottom: 12px;
            background: rgba(0, 224, 255, 0.08);
            border: 1px solid rgba(0, 224, 255, 0.2);
            padding: 4px 16px;
            border-radius: 999px;
        }

        .section-head h2 {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 16px;
            line-height: 1.3;
            color: var(--text-primary);
        }

        .section-head p {
            color: var(--text-secondary);
            margin: 0;
            font-size: 1rem;
        }

        @media (max-width: 768px) {
            .section-head h2 {
                font-size: 1.6rem;
            }
        }

        /* ===== 导航 ===== */
        .site-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            min-height: 72px;
            background: rgba(7, 11, 18, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-navbar.scrolled {
            background: rgba(7, 11, 18, 0.85);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
            border-bottom-color: rgba(255, 255, 255, 0.1);
        }

        .site-navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            flex-wrap: nowrap;
        }

        .navbar-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary) !important;
            letter-spacing: .01em;
            white-space: nowrap;
            line-height: 1.2;
        }

        .navbar-brand .brand-accent {
            color: var(--accent);
            font-weight: 800;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 8px;
            padding: 6px 10px;
            background: transparent;
        }

        .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 22px;
            height: 16px;
            display: block;
        }

        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
        }

        .navbar-toggler-icon::before {
            top: 2px;
            box-shadow: 0 6px 0 var(--text-primary);
        }

        .navbar-toggler-icon::after {
            bottom: 2px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.3);
        }

        .navbar-collapse {
            gap: 20px;
        }

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

        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-size: .9375rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .navbar-nav .nav-link.active {
            color: var(--accent);
            background: rgba(0, 224, 255, 0.08);
            box-shadow: inset 0 0 0 1px rgba(0, 224, 255, 0.18);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 224, 255, 0.6);
        }

        .nav-cta {
            margin-left: 12px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--radius-md);
            padding: 10px 22px;
            font-size: .9375rem;
            border: 1px solid transparent;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .btn-nav {
            background: linear-gradient(135deg, var(--accent), var(--accent-deep));
            color: #fff !important;
            box-shadow: var(--shadow-accent);
            padding: 9px 22px;
            border-radius: 10px;
            font-size: .9375rem;
            font-weight: 600;
            border: none;
        }

        .btn-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 224, 255, 0.5);
            color: #fff !important;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--accent), var(--accent-deep));
            color: #fff !important;
            box-shadow: var(--shadow-accent);
            border: none;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-size: 1rem;
        }

        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 224, 255, 0.55);
            color: #fff !important;
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--accent) !important;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-size: 1rem;
        }

        .btn-outline-custom:hover {
            border-color: var(--accent);
            background: rgba(0, 224, 255, 0.06);
            color: var(--accent) !important;
            transform: translateY(-2px);
        }

        .btn-lg-cta {
            padding: 16px 40px;
            font-size: 1.0625rem;
            border-radius: 14px;
        }

        @media (max-width: 991px) {
            .site-navbar .container {
                flex-wrap: wrap;
                padding-top: 10px;
                padding-bottom: 10px;
            }

            .navbar-collapse {
                width: 100%;
                background: rgba(7, 11, 18, 0.97);
                border: 1px solid rgba(255, 255, 255, 0.08);
                border-radius: 14px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
            }

            .navbar-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

            .navbar-nav .nav-link {
                padding: 12px 14px;
                font-size: 1rem;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                text-align: center;
            }

            .nav-cta .btn-nav {
                width: 100%;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding: 140px 0 100px;
            background:
                linear-gradient(180deg, rgba(7, 11, 18, 0.55), rgba(7, 11, 18, 0.88)),
                url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(0, 224, 255, 0.06) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 224, 255, 0.06) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }

        .hero::after {
            content: "";
            position: absolute;
            top: -120px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 224, 255, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 224, 255, 0.08);
            border: 1px solid rgba(0, 224, 255, 0.22);
            border-radius: 999px;
            padding: 6px 18px;
            color: var(--accent);
            font-size: .875rem;
            font-weight: 500;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: clamp(2.25rem, 4vw, 2.75rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            margin: 0 0 18px;
            letter-spacing: .01em;
        }

        .hero h1 .gradient-text {
            background: linear-gradient(120deg, var(--accent), #7CE8FF);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.6;
        }

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

        .hero-scroll {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            color: var(--text-muted);
            font-size: 1.4rem;
            animation: scrollBounce 2s infinite;
            z-index: 2;
            background: none;
            border: none;
            padding: 0;
        }

        .hero-scroll:hover {
            color: var(--accent);
        }

        @keyframes scrollBounce {
            0%,
            100% {
                transform: translate(-50%, 0);
            }
            50% {
                transform: translate(-50%, 10px);
            }
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 80vh;
                padding: 110px 0 80px;
            }

            .hero h1 {
                font-size: 1.75rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }
        }

        /* ===== 图文交错区 ===== */
        .split-row {
            display: flex;
            align-items: center;
            gap: 56px;
            margin-bottom: 72px;
        }

        .split-row:last-child {
            margin-bottom: 0;
        }

        .split-row .split-image {
            flex: 1 1 48%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--surface-border);
            box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
            position: relative;
        }

        .split-row .split-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        .split-row .split-image::after {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, rgba(0, 224, 255, 0.06), transparent 50%);
            pointer-events: none;
        }

        .split-row .split-content {
            flex: 1 1 48%;
        }

        .split-row .split-content .tag {
            display: inline-block;
            background: rgba(0, 224, 255, 0.08);
            border: 1px solid rgba(0, 224, 255, 0.18);
            color: var(--accent);
            font-size: .8125rem;
            font-weight: 600;
            letter-spacing: .04em;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .split-row .split-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 0 14px;
            line-height: 1.35;
        }

        .split-row .split-content p {
            color: var(--text-secondary);
            margin: 0 0 16px;
        }

        .split-row .split-content ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .split-row .split-content ul li {
            position: relative;
            padding-left: 26px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            font-size: .9375rem;
        }

        .split-row .split-content ul li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 1px;
            color: var(--accent);
            font-size: .8125rem;
        }

        @media (max-width: 991px) {
            .split-row {
                flex-direction: column !important;
                gap: 28px;
                margin-bottom: 48px;
            }

            .split-row .split-image,
            .split-row .split-content {
                flex: 1 1 auto;
                width: 100%;
            }

            .split-row .split-image img {
                height: 240px;
            }
        }

        /* ===== 适用场景 ===== */
        .scenario-card {
            background: var(--surface-glass);
            border: 1px solid var(--surface-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 28px 24px;
            height: 100%;
            transition: var(--transition);
        }

        .scenario-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 224, 255, 0.4);
            box-shadow: var(--shadow-card);
        }

        .scenario-card .icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 224, 255, 0.1);
            border: 1px solid rgba(0, 224, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
            margin-bottom: 18px;
        }

        .scenario-card h3 {
            font-size: 1.125rem;
            font-weight: 700;
            margin: 0 0 10px;
            color: var(--text-primary);
        }

        .scenario-card p {
            color: var(--text-secondary);
            font-size: .9375rem;
            margin: 0;
            line-height: 1.65;
        }

        /* ===== 步骤条 ===== */
        .steps-section {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }

        .steps-section::before {
            content: "";
            position: absolute;
            bottom: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(0, 224, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .step-item {
            text-align: center;
            padding: 32px 20px;
            position: relative;
        }

        .step-item .step-dot {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.12);
            border: 2px solid rgba(255, 255, 255, 0.2);
            margin: 0 auto 18px;
            position: relative;
            z-index: 2;
        }

        .step-item.done .step-dot {
            background: var(--accent);
            border-color: var(--accent);
            box-shadow: 0 0 14px rgba(0, 224, 255, 0.6);
        }

        .step-item.active .step-dot {
            background: var(--gold);
            border-color: var(--gold);
            box-shadow: 0 0 18px rgba(245, 179, 1, 0.65);
        }

        .step-item .step-num {
            font-size: .8125rem;
            font-weight: 700;
            color: var(--text-muted);
            letter-spacing: .06em;
            margin-bottom: 6px;
            text-transform: uppercase;
        }

        .step-item h3 {
            font-size: 1.0625rem;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .step-item p {
            font-size: .875rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        .step-connector {
            position: absolute;
            top: 42px;
            left: 25%;
            width: 50%;
            height: 2px;
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-50%);
        }

        .step-connector.done {
            background: linear-gradient(90deg, var(--accent), rgba(0, 224, 255, 0.6));
            box-shadow: 0 0 12px rgba(0, 224, 255, 0.4);
        }

        @media (max-width: 991px) {
            .steps-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
                gap: 16px;
            }

            .step-item {
                display: flex;
                text-align: left;
                align-items: flex-start;
                gap: 18px;
                padding: 20px 0;
            }

            .step-item .step-dot {
                margin: 6px 0 0;
                flex-shrink: 0;
            }

            .step-connector {
                display: none;
            }
        }

        /* ===== 双卡入口 ===== */
        .dual-card {
            background: var(--surface-glass);
            border: 1px solid var(--surface-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 32px;
            display: flex;
            align-items: flex-start;
            gap: 24px;
            height: 100%;
            transition: var(--transition);
        }

        .dual-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 224, 255, 0.4);
            box-shadow: var(--shadow-card);
        }

        .dual-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(0, 224, 255, 0.16), rgba(0, 102, 255, 0.12));
            border: 1px solid rgba(0, 224, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            flex-shrink: 0;
        }

        .dual-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .dual-card p {
            color: var(--text-secondary);
            font-size: .9375rem;
            margin: 0 0 16px;
        }

        .dual-card .link-more {
            color: var(--accent);
            font-weight: 600;
            font-size: .9375rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            position: relative;
        }

        .dual-card .link-more:hover {
            gap: 10px;
        }

        @media (max-width: 768px) {
            .dual-card {
                flex-direction: column;
                padding: 24px;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--surface-glass);
            border: 1px solid var(--surface-border) !important;
            border-radius: var(--radius-lg) !important;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            margin-bottom: 16px;
            overflow: hidden;
        }

        .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-header .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 1.0625rem;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            border: none;
            position: relative;
        }

        .accordion-header .accordion-button::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            background: none;
            width: auto;
            height: auto;
            margin-left: auto;
            color: var(--accent);
            font-size: 1rem;
            transform: none;
            transition: transform .3s ease;
        }

        .accordion-header .accordion-button:not(.collapsed)::after {
            content: "\f068";
            transform: rotate(0deg);
        }

        .accordion-header .accordion-button:not(.collapsed) {
            color: var(--accent);
            background: rgba(0, 224, 255, 0.04);
        }

        .accordion-header .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.2);
            border-radius: var(--radius-lg);
        }

        .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: .9375rem;
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin: 0 0 12px;
        }

        @media (max-width: 768px) {
            .accordion-header .accordion-button {
                font-size: 1rem;
                padding: 16px 18px;
            }

            .accordion-body {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(0, 224, 255, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box {
            text-align: center;
            padding: 32px 0 0;
            position: relative;
        }

        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            margin: 0 0 16px;
        }

        .cta-box p {
            color: var(--text-secondary);
            font-size: 1.0625rem;
            margin: 0 auto 32px;
            max-width: 600px;
        }

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

        .btn-pulse {
            position: relative;
            animation: pulseGlow 2.4s infinite;
        }

        @keyframes pulseGlow {
            0%,
            100% {
                box-shadow: 0 0 18px rgba(0, 224, 255, 0.35);
            }
            50% {
                box-shadow: 0 0 32px rgba(0, 224, 255, 0.6), 0 0 60px rgba(0, 224, 255, 0.15);
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 0;
            margin-top: 0;
        }

        .site-footer .container {
            max-width: 1200px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand-name {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .footer-brand-name span {
            color: var(--accent);
        }

        .footer-brand-desc {
            color: var(--text-muted);
            font-size: .875rem;
            line-height: 1.65;
            margin: 0;
            max-width: 360px;
        }

        .footer-title {
            font-size: .9375rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: .03em;
        }

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

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

        .footer-links-list a {
            color: var(--text-secondary);
            font-size: .875rem;
            transition: var(--transition);
        }

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

        .footer-contact-info {
            color: var(--text-secondary);
            font-size: .875rem;
            line-height: 2;
        }

        .footer-contact-info i {
            color: var(--accent);
            width: 20px;
            margin-right: 6px;
        }

        .footer-contact-info a {
            color: var(--text-secondary);
        }

        .footer-contact-info a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 20px 0;
            color: var(--text-muted);
            font-size: .8125rem;
            gap: 8px;
        }

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

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

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }

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

        /* ===== 通用辅助 ===== */
        .bg-secondary-custom {
            background: var(--bg-secondary);
        }

        .divider-glow {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 224, 255, 0.4), transparent);
            border: none;
            margin: 0;
        }

        /* ===== 动画 ===== */
        .fade-up {
            animation: fadeUp .6s ease-out both;
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .navbar-brand:hover {
            color: var(--text-primary) !important;
        }

/* roulang page: article */
:root {
    --bg-primary: #070B12;
    --bg-secondary: #0D1420;
    --bg-elevated: #101A2A;
    --glass-bg: rgba(255,255,255,0.05);
    --glass-border: rgba(255,255,255,0.10);
    --glass-border-hover: rgba(0,224,255,0.40);
    --accent: #00E0FF;
    --accent-dark: #0066FF;
    --gold: #F5B301;
    --text-main: #E8EDF5;
    --text-secondary: #A7B4C3;
    --text-muted: #5D6B7E;
    --radius-xl: 20px;
    --radius-lg: 16px;
    --radius-md: 12px;
    --shadow-accent: 0 0 18px rgba(0,224,255,0.35);
    --shadow-card: 0 12px 32px rgba(0,224,255,0.08);
    --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    --transition-base: all 0.3s ease;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: none; transition: var(--transition-base); }
a:hover { color: #fff; }
button, input, select, textarea { font-family: inherit; }
ul, ol { margin: 0; padding: 0; }
::selection { background: rgba(0,224,255,0.25); color: #fff; }

.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }

/* ===== 导航 ===== */
.site-navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1040;
    height: 72px;
    background: rgba(7,11,18,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: var(--transition-base);
}
.site-navbar .container {
    display: flex;
    align-items: center;
    height: 72px;
    position: relative;
}
.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 2px;
    margin-right: 24px;
    white-space: nowrap;
}
.navbar-brand .brand-accent { color: var(--accent); }
.navbar-brand:hover { color: var(--accent); }
.navbar-collapse { flex: 1; justify-content: center; }
.navbar-nav {
    display: flex;
    gap: 4px;
    list-style: none;
    margin: 0; padding: 0;
}
.navbar-nav .nav-link {
    display: inline-block;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 10px;
    transition: var(--transition-base);
    white-space: nowrap;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--accent);
    background: rgba(0,224,255,0.08);
}
.nav-cta { margin-left: 16px; }
.btn-nav {
    display: inline-block;
    padding: 10px 22px;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-accent);
    transition: var(--transition-base);
    white-space: nowrap;
}
.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 28px rgba(0,224,255,0.5);
    color: #fff;
}
.btn-nav:focus-visible {
    outline: 3px solid rgba(0,224,255,0.4);
    outline-offset: 2px;
}
.navbar-toggler {
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 10px;
    padding: 6px 10px;
    background: transparent;
}
.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(0,224,255,0.15);
    outline: none;
}
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
@media (max-width: 991.98px) {
    .navbar-collapse {
        position: absolute;
        top: 72px;
        left: 0; right: 0;
        background: rgba(7,11,18,0.98);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255,255,255,0.08);
        padding: 16px 24px 20px;
        flex-direction: column;
        align-items: flex-start;
    }
    .navbar-nav { flex-direction: column; gap: 8px; width: 100%; }
    .navbar-nav .nav-link { display: block; padding: 10px 14px; }
    .nav-cta { margin-left: 0; margin-top: 14px; width: 100%; }
    .btn-nav { display: block; text-align: center; }
}

/* ===== 面包屑 ===== */
.breadcrumb-nav {
    padding-top: 96px;
    padding-bottom: 8px;
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.breadcrumb-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0; padding: 0;
    font-size: 0.8125rem;
    color: var(--text-muted);
}
.breadcrumb-list li + li::before {
    content: "/";
    margin-right: 8px;
    color: var(--text-muted);
}
.breadcrumb-list a { color: var(--text-secondary); }
.breadcrumb-list a:hover { color: var(--accent); }
.breadcrumb-list .is-active { color: var(--text-secondary); max-width: 320px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ===== 文章头部 ===== */
.article-hero {
    padding: 40px 0 48px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
    overflow: hidden;
}
.article-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    opacity: 0.22;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0.8), transparent);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.8), transparent);
}
.article-hero .container { position: relative; z-index: 2; }
.article-hero h1 {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.3;
    color: #fff;
    margin: 16px 0 18px;
    letter-spacing: 0.01em;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}
.article-meta .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.article-meta .meta-item i { color: var(--accent); opacity: 0.85; }
.badge-soft {
    display: inline-block;
    padding: 4px 14px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    background: rgba(0,224,255,0.1);
    color: var(--accent);
    border: 1px solid rgba(0,224,255,0.2);
}

/* ===== 正文区 ===== */
.article-main { padding: 56px 0 24px; }
.article-body {
    max-width: 720px;
    margin: 0 auto;
    font-size: 1rem;
    line-height: 1.75;
    color: var(--text-main);
}
.article-body h2,
.article-body h3 {
    margin-top: 40px;
    margin-bottom: 16px;
    font-weight: 700;
    line-height: 1.3;
    color: #fff;
    letter-spacing: 0.01em;
}
.article-body h2 {
    font-size: 1.5rem;
    border-left: 4px solid var(--accent);
    padding-left: 14px;
}
.article-body h3 { font-size: 1.25rem; }
.article-body p { margin-bottom: 24px; text-align: justify; }
.article-body img {
    border-radius: var(--radius-md);
    margin: 24px 0;
    width: 100%;
    height: auto;
    display: block;
}
.article-body blockquote {
    border-left: 3px solid var(--accent);
    background: rgba(255,255,255,0.03);
    padding: 18px 22px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--text-secondary);
    margin: 28px 0;
    font-style: normal;
}
.article-body blockquote p { margin-bottom: 0; }
.article-body ul,
.article-body ol {
    padding-left: 24px;
    margin-bottom: 24px;
}
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--accent); border-bottom: 1px solid rgba(0,224,255,0.3); }
.article-body a:hover { color: #fff; border-bottom-color: #fff; }
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.9375rem;
}
.article-body table th,
.article-body table td {
    border: 1px solid rgba(255,255,255,0.1);
    padding: 10px 14px;
    text-align: left;
}
.article-body table th {
    background: rgba(0,224,255,0.06);
    font-weight: 600;
    color: #fff;
}
.article-body code {
    background: rgba(255,255,255,0.08);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.875em;
    color: var(--accent);
}
.article-body pre {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    padding: 20px;
    overflow-x: auto;
    margin: 24px 0;
}

/* ===== 空状态 ===== */
.article-empty {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
}
.article-empty i {
    font-size: 2.5rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}
.article-empty h3 { font-size: 1.25rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.article-empty p { color: var(--text-secondary); font-size: 0.9375rem; margin-bottom: 20px; }

/* ===== 标签与返回 ===== */
.article-tags {
    max-width: 720px;
    margin: 40px auto 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.article-tag {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(255,255,255,0.03);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    transition: var(--transition-base);
}
.article-tag:hover { border-color: var(--accent); color: var(--accent); }
.article-actions {
    max-width: 720px;
    margin: 28px auto 0;
    text-align: center;
}

/* ===== 按钮通用 ===== */
.btn-primary-custom {
    display: inline-block;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-accent);
    transition: var(--transition-base);
    cursor: pointer;
}
.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 28px rgba(0,224,255,0.5);
    color: #fff;
}
.btn-primary-custom:focus-visible {
    outline: 3px solid rgba(0,224,255,0.4);
    outline-offset: 2px;
}
.btn-outline-custom {
    display: inline-block;
    padding: 12px 26px;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--accent);
    background: transparent;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    cursor: pointer;
}
.btn-outline-custom:hover {
    border-color: var(--accent);
    background: rgba(0,224,255,0.06);
    color: var(--accent);
    transform: translateY(-2px);
}
.btn-outline-custom:focus-visible {
    outline: 3px solid rgba(0,224,255,0.3);
    outline-offset: 2px;
}

/* ===== 相关推荐 ===== */
.related-section {
    padding: 56px 0 64px;
    background: var(--bg-secondary);
    position: relative;
}
.related-section .container { position: relative; z-index: 2; }
.related-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    color: #fff;
    margin-bottom: 8px;
}
.related-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 36px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-base);
}
.related-card:hover {
    transform: translateY(-4px);
    border-color: var(--glass-border-hover);
    box-shadow: var(--shadow-card);
}
.related-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    display: block;
    transition: var(--transition-base);
}
.related-card:hover img { transform: scale(1.03); }
.related-card-body { padding: 20px; }
.related-card-body h5 { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 10px; line-height: 1.4; }
.related-card-body h5 a { color: inherit; }
.related-card-body h5 a:hover { color: var(--accent); }
.related-date { font-size: 0.8125rem; color: var(--text-muted); display: inline-flex; align-items: center; gap: 5px; }

/* ===== CTA 区块 ===== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.12;
}
.cta-section .container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.cta-section p {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 520px;
    margin: 0 auto 28px;
}
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 56px 0 24px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}
.footer-brand-name { font-size: 1.25rem; font-weight: 700; color: #fff; letter-spacing: 0.02em; }
.footer-brand-desc { font-size: 0.875rem; color: var(--text-secondary); margin-top: 12px; line-height: 1.7; max-width: 320px; }
.footer-title { font-size: 0.9375rem; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-links-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-links-list a { color: var(--text-secondary); font-size: 0.875rem; transition: var(--transition-base); }
.footer-links-list a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact-info { display: grid; gap: 10px; font-size: 0.875rem; color: var(--text-secondary); }
.footer-contact-info a { color: var(--text-secondary); }
.footer-contact-info a:hover { color: var(--accent); }
.footer-contact-info i { color: var(--accent); margin-right: 6px; opacity: 0.85; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.8125rem;
    color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767.98px) {
    .breadcrumb-nav { padding-top: 88px; }
    .article-hero h1 { font-size: 1.75rem; }
    .article-hero { padding: 28px 0 36px; }
    .article-meta { gap: 12px; font-size: 0.8125rem; }
    .article-main { padding-top: 40px; }
    .related-grid { grid-template-columns: 1fr; }
    .related-section { padding: 40px 0 48px; }
    .cta-section { padding: 56px 0; }
    .cta-section h2 { font-size: 1.5rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .breadcrumb-list .is-active { max-width: 220px; }
}
@media (max-width: 520px) {
    .container { padding-left: 16px; padding-right: 16px; }
    .article-body { font-size: 0.9375rem; }
    .article-body h2 { font-size: 1.25rem; }
    .article-body blockquote { padding: 14px 18px; }
    .btn-primary-custom,
    .btn-outline-custom { width: 100%; text-align: center; }
    .cta-actions { flex-direction: column; gap: 12px; }
    .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
}

/* roulang page: category2 */
:root {
            --bg-primary: #070B12;
            --bg-secondary: #0D1420;
            --bg-deep: #05080F;
            --bg-card: rgba(255, 255, 255, 0.05);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --border-glass: rgba(255, 255, 255, 0.1);
            --border-active: rgba(0, 224, 255, 0.4);
            --primary: #00E0FF;
            --primary-2: #0066FF;
            --accent: #F5B301;
            --text-main: #E8EDF5;
            --text-sub: #A7B4C3;
            --text-muted: #5D6B7E;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-primary: 0 0 18px rgba(0, 224, 255, 0.35);
            --shadow-card: 0 12px 32px rgba(0, 224, 255, 0.08);
            --transition: .3s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            background: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: #66eaff;
        }

        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ====== 导航 ====== */
        .site-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1070;
            height: 72px;
            background: rgba(7, 11, 18, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background .4s ease, box-shadow .4s ease;
        }

        .site-navbar.scrolled {
            background: rgba(7, 11, 18, 0.92);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
        }

        .site-navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            flex-wrap: nowrap;
        }

        .navbar-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: .02em;
            white-space: nowrap;
            line-height: 1.3;
            display: inline-flex;
            align-items: baseline;
        }

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

        .brand-accent {
            color: var(--primary);
            margin-right: 2px;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: transparent;
            border-radius: 8px;
            padding: 6px 10px;
            color: var(--text-main);
        }

        .navbar-toggler-icon {
            width: 20px;
            height: 20px;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(232,237,245,.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            display: inline-block;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.25);
            outline: none;
        }

        #mainNavbar {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .navbar-nav {
            display: flex;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .navbar-nav .nav-link {
            color: var(--text-sub);
            font-size: .9375rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-main);
            background: rgba(0, 224, 255, 0.08);
        }

        .navbar-nav .nav-link:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(0, 224, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 224, 255, 0.2);
        }

        .nav-cta {
            margin-left: 16px;
            flex-shrink: 0;
        }

        .btn-nav {
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            border: none;
            font-size: .9375rem;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 10px;
            box-shadow: 0 0 14px rgba(0, 224, 255, 0.35);
            transition: all var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-nav:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 24px rgba(0, 224, 255, 0.5);
        }

        .btn-nav:active {
            transform: translateY(0);
            box-shadow: 0 0 10px rgba(0, 224, 255, 0.3);
        }

        .btn-nav:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        @media (max-width: 991.98px) {
            .site-navbar .container {
                flex-wrap: wrap;
                padding-top: 12px;
                padding-bottom: 12px;
            }

            .site-navbar {
                height: auto;
                min-height: 72px;
            }

            #mainNavbar {
                width: 100%;
                margin-top: 14px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding-top: 12px;
                padding-bottom: 12px;
                background: rgba(7, 11, 18, 0.97);
                border-radius: 0 0 16px 16px;
            }

            .navbar-nav {
                flex-direction: column;
                width: 100%;
                gap: 2px;
            }

            .navbar-nav .nav-link {
                display: block;
                padding: 10px 14px;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
            }

            .btn-nav {
                width: 100%;
                justify-content: center;
            }
        }

        /* ====== Hero ====== */
        .page-hero {
            position: relative;
            min-height: 60vh;
            display: flex;
            align-items: center;
            padding: 150px 0 90px;
            overflow: hidden;
            background-color: var(--bg-deep);
            background-image: linear-gradient(rgba(5, 8, 15, .55), rgba(5, 8, 15, .75)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }

        .hero-grid-overlay {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(0, 224, 255, .12) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 224, 255, .12) 1px, transparent 1px);
            background-size: 44px 44px;
            opacity: .35;
            mask-image: radial-gradient(ellipse at center, #000 30%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 70%);
            pointer-events: none;
        }

        .hero-dots {
            position: absolute;
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 224, 255, .4) 0%, transparent 70%);
            filter: blur(2px);
            pointer-events: none;
        }

        .hero-dots.d1 {
            top: 22%;
            left: 12%;
        }

        .hero-dots.d2 {
            bottom: 20%;
            right: 14%;
            background: radial-gradient(circle, rgba(245, 179, 1, .35) 0%, transparent 70%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 224, 255, 0.08);
            border: 1px solid rgba(0, 224, 255, 0.3);
            color: var(--primary);
            font-size: .815rem;
            font-weight: 600;
            letter-spacing: .04em;
            padding: 7px 16px;
            border-radius: 30px;
            margin-bottom: 24px;
        }

        .hero-badge i {
            font-size: .75rem;
        }

        .page-hero h1 {
            font-size: 2.75rem;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 18px;
            color: var(--text-main);
            letter-spacing: .01em;
        }

        .page-hero h1 .gradient-text {
            background: linear-gradient(135deg, var(--primary), #66eaff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.125rem;
            color: var(--text-sub);
            margin-bottom: 36px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        @media (max-width: 767.98px) {
            .page-hero {
                padding: 120px 0 60px;
                min-height: 50vh;
            }

            .page-hero h1 {
                font-size: 1.9rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .hero-actions .btn {
                flex: 1;
                justify-content: center;
            }
        }

        /* ====== 通用按钮 ====== */
        .btn-custom-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 12px;
            box-shadow: 0 0 18px rgba(0, 224, 255, .35);
            transition: all var(--transition);
        }

        .btn-custom-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 224, 255, .55);
            background: linear-gradient(135deg, #2ae4ff, #0a78ff);
        }

        .btn-custom-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(0, 224, 255, .3);
        }

        .btn-custom-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-custom-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--primary);
            font-size: 1rem;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 12px;
            transition: all var(--transition);
        }

        .btn-custom-secondary:hover {
            border-color: var(--primary);
            background: rgba(0, 224, 255, 0.06);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-custom-secondary:active {
            transform: translateY(0);
        }

        .btn-custom-secondary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        /* ====== 通用区块标题 ====== */
        .section-padding {
            padding: 90px 0;
        }

        .section-title-wrap {
            margin-bottom: 54px;
            text-align: center;
        }

        .section-title-wrap .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: .93rem;
            font-weight: 600;
            letter-spacing: .06em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title-wrap .section-tag i {
            font-size: .8em;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 12px;
            color: var(--text-main);
        }

        .section-subtitle {
            color: var(--text-sub);
            font-size: 1rem;
            max-width: 520px;
            margin: 0 auto;
        }

        @media (max-width: 767.98px) {
            .section-padding {
                padding: 58px 0;
            }

            .section-title {
                font-size: 1.6rem;
            }
        }

        /* ====== 图文交错区 ====== */
        .content-blocks {
            background: var(--bg-secondary);
            position: relative;
        }

        .content-blocks::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 70%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(0, 224, 255, .5), transparent);
        }

        .content-block-row {
            display: flex;
            align-items: center;
            gap: 50px;
            margin-bottom: 70px;
        }

        .content-block-row:last-child {
            margin-bottom: 0;
        }

        .content-block-row.reverse .content-media {
            order: 2;
        }

        .content-block-row.reverse .content-body {
            order: 1;
        }

        .content-media {
            flex: 1;
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 20px 50px rgba(0, 0, 0, .4);
        }

        .content-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }

        .content-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, .45));
            border-radius: var(--radius-lg);
        }

        .media-float-badge {
            position: absolute;
            bottom: 18px;
            left: 18px;
            z-index: 2;
            background: rgba(7, 11, 18, .75);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 224, 255, .25);
            border-radius: 12px;
            padding: 10px 18px;
            color: var(--primary);
            font-size: .875rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .content-body {
            flex: 1;
        }

        .content-body .content-index {
            color: var(--primary);
            font-size: .875rem;
            font-weight: 700;
            letter-spacing: .08em;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .content-body .content-index::after {
            content: '';
            width: 36px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), transparent);
            border-radius: 2px;
        }

        .content-body h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 16px;
            color: var(--text-main);
        }

        .content-body p {
            color: var(--text-sub);
            font-size: 1rem;
            margin-bottom: 20px;
            text-align: justify;
        }

        .content-body ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .content-body ul li {
            position: relative;
            padding-left: 26px;
            margin-bottom: 10px;
            color: var(--text-sub);
            font-size: .9375rem;
        }

        .content-body ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 8px rgba(0, 224, 255, .6);
        }

        @media (max-width: 991.98px) {
            .content-block-row,
            .content-block-row.reverse {
                flex-direction: column;
                gap: 30px;
            }

            .content-media img {
                height: 240px;
            }

            .content-body h3 {
                font-size: 1.35rem;
            }
        }

        /* ====== 亮点卡片 ====== */
        .feature-cards {
            background: var(--bg-primary);
        }

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            transition: all var(--transition);
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-active);
            box-shadow: var(--shadow-card);
            background: var(--bg-card-hover);
        }

        .feature-card:focus-within {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            background: rgba(0, 224, 255, .08);
            border: 1px solid rgba(0, 224, 255, .2);
            margin-bottom: 18px;
            transition: all var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: rgba(0, 224, 255, .15);
            box-shadow: 0 0 16px rgba(0, 224, 255, .2);
        }

        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 0 0 10px;
            color: var(--text-main);
        }

        .feature-card p {
            font-size: .875rem;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 991.98px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ====== 适用场景 ====== */
        .scenarios-section {
            background: var(--bg-secondary);
            position: relative;
        }

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

        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(14px);
            border-radius: var(--radius-lg);
            padding: 34px 28px;
            text-align: center;
            transition: all var(--transition);
        }

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

        .scenario-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent);
            background: rgba(245, 179, 1, .1);
            border: 1px solid rgba(245, 179, 1, .25);
            margin-bottom: 20px;
            font-variant-numeric: tabular-nums;
        }

        .scenario-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 0 0 12px;
            color: var(--text-main);
        }

        .scenario-card p {
            font-size: .9375rem;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.65;
        }

        @media (max-width: 991.98px) {
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .scenario-card {
                text-align: left;
                display: flex;
                gap: 18px;
                padding: 24px;
            }

            .scenario-number {
                margin-bottom: 0;
                flex-shrink: 0;
            }
        }

        /* ====== 流程步骤 ====== */
        .process-section {
            background: var(--bg-primary);
        }

        .process-track {
            position: relative;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            padding: 20px 0;
        }

        .process-track::before {
            content: '';
            position: absolute;
            top: 44px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: rgba(255, 255, 255, .12);
            border-radius: 2px;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-node {
            width: 56px;
            height: 56px;
            margin: 0 auto 18px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .04);
            border: 2px solid rgba(255, 255, 255, .2);
            font-size: 1.2rem;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
            transition: all var(--transition);
            font-weight: 700;
        }

        .process-step.completed .process-node {
            background: var(--primary);
            border-color: var(--primary);
            color: #071018;
            box-shadow: 0 0 20px rgba(0, 224, 255, .4);
        }

        .process-step.active .process-node {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 22px rgba(245, 179, 1, .4);
            background: rgba(245, 179, 1, .1);
        }

        .process-step.pending .process-node {
            background: rgba(255, 255, 255, .03);
            border-color: rgba(255, 255, 255, .12);
            color: var(--text-muted);
        }

        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--text-main);
        }

        .process-step p {
            font-size: .875rem;
            color: var(--text-sub);
            max-width: 180px;
            margin: 0 auto;
            line-height: 1.55;
        }

        @media (max-width: 767.98px) {
            .process-track {
                grid-template-columns: 1fr;
                gap: 0;
                padding: 0;
            }

            .process-track::before {
                left: 28px;
                right: auto;
                width: 2px;
                top: 0;
                bottom: 0;
                height: auto;
            }

            .process-step {
                display: flex;
                align-items: flex-start;
                text-align: left;
                gap: 20px;
                padding: 18px 0;
            }

            .process-node {
                margin: 0;
                flex-shrink: 0;
            }

            .process-step h3,
            .process-step p {
                margin-left: 0;
            }
        }

        /* ====== 入口导航 ====== */
        .entry-nav-section {
            background: var(--bg-secondary);
            position: relative;
        }

        .entry-nav-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .entry-nav-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            padding: 38px 32px;
            display: flex;
            align-items: center;
            gap: 24px;
            transition: all var(--transition);
        }

        .entry-nav-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-active);
            box-shadow: var(--shadow-card);
        }

        .entry-nav-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            background: rgba(0, 224, 255, .08);
            border: 1px solid rgba(0, 224, 255, .2);
            flex-shrink: 0;
        }

        .entry-nav-info h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--text-main);
        }

        .entry-nav-info p {
            font-size: .9rem;
            color: var(--text-sub);
            margin: 0 0 12px;
        }

        .entry-nav-link {
            color: var(--primary);
            font-size: .93rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }

        .entry-nav-link:hover {
            color: #66eaff;
            gap: 10px;
        }

        .entry-nav-link:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        @media (max-width: 767.98px) {
            .entry-nav-grid {
                grid-template-columns: 1fr;
            }

            .entry-nav-card {
                flex-direction: column;
                text-align: center;
                padding: 30px 24px;
            }
        }

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

        .faq-container {
            max-width: 760px;
            margin: 0 auto;
        }

        .accordion-faq .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass) !important;
            backdrop-filter: blur(14px);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .accordion-faq .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(0, 224, 255, .3) !important;
            box-shadow: 0 0 20px rgba(0, 224, 255, .06);
        }

        .accordion-faq .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 600;
            padding: 22px 26px;
            text-align: left;
            line-height: 1.5;
            box-shadow: none;
            border: none;
            position: relative;
        }

        .accordion-faq .accordion-button::after {
            content: '\f067';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            background: none;
            width: auto;
            height: auto;
            font-size: .85rem;
            color: var(--primary);
            transition: transform var(--transition);
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
        }

        .accordion-faq .accordion-button:not(.collapsed)::after {
            transform: translateY(-50%) rotate(45deg);
        }

        .accordion-faq .accordion-button:not(.collapsed) {
            background: rgba(0, 224, 255, .03);
            color: var(--primary);
        }

        .accordion-faq .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 224, 255, .2);
            border-radius: var(--radius-md);
        }

        .accordion-faq .accordion-body {
            padding: 6px 26px 24px;
            color: var(--text-sub);
            font-size: .9375rem;
            line-height: 1.75;
        }

        @media (max-width: 575.98px) {
            .accordion-faq .accordion-button {
                padding: 18px 48px 18px 18px;
                font-size: .9375rem;
            }

            .accordion-faq .accordion-body {
                padding: 4px 18px 20px;
            }
        }

        /* ====== CTA ====== */
        .cta-section {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 224, 255, .12) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box {
            position: relative;
            z-index: 1;
            text-align: center;
            background: linear-gradient(135deg, rgba(0, 224, 255, .08), rgba(0, 102, 255, .04));
            border: 1px solid rgba(0, 224, 255, .2);
            border-radius: 20px;
            padding: 72px 40px;
            backdrop-filter: blur(16px);
        }

        .cta-box h2 {
            font-size: 2.1rem;
            font-weight: 700;
            margin: 0 0 16px;
            color: var(--text-main);
        }

        .cta-box p {
            color: var(--text-sub);
            font-size: 1.05rem;
            max-width: 440px;
            margin: 0 auto 36px;
        }

        .cta-btn-big {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
            border: none;
            font-size: 1.1rem;
            font-weight: 600;
            padding: 16px 44px;
            border-radius: 14px;
            box-shadow: 0 0 24px rgba(0, 224, 255, .4);
            animation: pulseGlow 2.5s ease-in-out infinite;
            transition: all var(--transition);
        }

        .cta-btn-big:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 38px rgba(0, 224, 255, .6);
            animation: none;
        }

        .cta-btn-big:active {
            transform: translateY(0);
            box-shadow: 0 0 14px rgba(0, 224, 255, .35);
        }

        .cta-btn-big:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 4px;
        }

        @keyframes pulseGlow {
            0%,
            100% {
                box-shadow: 0 0 18px rgba(0, 224, 255, .35);
            }

            50% {
                box-shadow: 0 0 34px rgba(0, 224, 255, .5);
            }
        }

        @media (max-width: 575.98px) {
            .cta-box {
                padding: 44px 24px;
            }

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

            .cta-btn-big {
                width: 100%;
                justify-content: center;
            }
        }

        /* ====== 页脚 ====== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 60px 0 0;
        }

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

        .footer-brand-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .footer-brand-desc {
            color: var(--text-sub);
            font-size: .9rem;
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 18px;
        }

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

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

        .footer-links-list a {
            color: var(--text-sub);
            font-size: .9rem;
            transition: all var(--transition);
        }

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

        .footer-contact-info {
            display: flex;
            flex-direction: column;
            gap: 12px;
            color: var(--text-sub);
            font-size: .9rem;
        }

        .footer-contact-info a {
            color: var(--text-sub);
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: .85rem;
        }

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

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

        @media (max-width: 767.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

        /* ====== 辅助 ====== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), #66eaff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(0, 224, 255, .1);
            border: 1px solid rgba(0, 224, 255, .3);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            backdrop-filter: blur(10px);
            transition: all var(--transition);
            z-index: 999;
        }

        .back-to-top:hover {
            background: rgba(0, 224, 255, .2);
            box-shadow: 0 0 20px rgba(0, 224, 255, .25);
            transform: translateY(-3px);
            color: var(--primary);
        }

        .back-to-top:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }