/* roulang page: index */
:root {
        --bg-primary: #0A1220;
        --bg-secondary: #0F1B2D;
        --bg-tertiary: #0B1626;
        --glass-bg: rgba(255,255,255,0.06);
        --glass-border: rgba(255,255,255,0.12);
        --accent-cyan: #00D9C0;
        --accent-orange: #FF6B3D;
        --accent-blue: #7CC4FF;
        --text-primary: #F1F7FB;
        --text-secondary: #9FB3C8;
        --text-muted: #5E7188;
        --radius-lg: 20px;
        --radius-md: 12px;
        --radius-sm: 8px;
        --shadow-card: 0 20px 60px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.08);
        --transition: all 0.25s ease;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
        font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
        background: var(--bg-primary);
        color: var(--text-primary);
        line-height: 1.8;
        font-size: 16px;
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
    }
    a { color: var(--accent-cyan); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--accent-cyan); text-decoration: none; }
    img { max-width: 100%; height: auto; display: inline-block; }
    ul, ol { list-style: none; padding: 0; margin: 0; }
    button, input, select, textarea { font-family: inherit; }
    .grid-container { max-width: 1200px; }

    /* ===== 按钮 ===== */
    .btn {
        display: inline-flex; align-items: center; justify-content: center;
        height: 48px; padding: 0 28px; border-radius: var(--radius-md);
        font-size: 16px; font-weight: 600; border: 1px solid transparent;
        cursor: pointer; transition: var(--transition); text-decoration: none;
        line-height: 1; white-space: nowrap; letter-spacing: 0.5px;
    }
    .btn-primary {
        background: linear-gradient(135deg, #FF6B3D, #FF8A5C);
        color: #fff; box-shadow: 0 6px 30px rgba(255,107,61,0.35);
    }
    .btn-primary:hover { box-shadow: 0 8px 40px rgba(255,107,61,0.5); transform: translateY(-2px); color: #fff; }
    .btn-primary:active { box-shadow: 0 4px 20px rgba(255,107,61,0.25); transform: translateY(0); }
    .btn-cyan {
        background: linear-gradient(135deg, #00D9C0, #00B8A8);
        color: #fff; box-shadow: 0 6px 24px rgba(0,217,192,0.25);
    }
    .btn-cyan:hover { box-shadow: 0 8px 32px rgba(0,217,192,0.4); transform: translateY(-2px); color: #fff; }
    .btn-ghost {
        background: transparent; border-color: rgba(255,255,255,0.25);
        color: var(--text-primary);
    }
    .btn-ghost:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); background: rgba(0,217,192,0.06); }
    .btn-sm { height: 40px; padding: 0 20px; font-size: 14px; }
    .btn-lg { height: 52px; padding: 0 40px; font-size: 17px; }
    .btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible {
        outline: 2px solid #fff; outline-offset: 2px;
    }

    /* ===== 导航 ===== */
    .site-header {
        position: fixed; top: 0; left: 0; right: 0; z-index: 100;
        background: rgba(10,18,32,0.82);
        backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        height: 64px;
    }
    .nav-inner {
        display: flex; align-items: center; justify-content: space-between;
        height: 64px; gap: 20px;
    }
    .brand {
        display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0;
    }
    .brand-logo {
        width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
        border-radius: 12px; background: rgba(0,217,192,0.12);
        border: 1px solid rgba(0,217,192,0.25); overflow: hidden;
    }
    .brand-text {
        font-size: 19px; font-weight: 800; color: var(--text-primary);
        letter-spacing: 0.5px; line-height: 1.1;
    }
    .brand-text small {
        display: block; font-size: 10px; font-weight: 500;
        color: var(--accent-cyan); letter-spacing: 2px; line-height: 1.2;
    }
    .main-nav {
        display: flex; align-items: center; gap: 28px; flex: 1; justify-content: center;
    }
    .main-nav a {
        color: var(--text-secondary); font-size: 15px; font-weight: 500;
        position: relative; text-decoration: none; padding: 6px 0;
        transition: var(--transition);
    }
    .main-nav a::after {
        content: ''; position: absolute; bottom: 0; left: 0;
        width: 0; height: 2px; background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
        transition: var(--transition); border-radius: 2px;
    }
    .main-nav a:hover { color: var(--text-primary); }
    .main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
    .main-nav a.active { color: var(--accent-cyan); }
    .nav-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
    .search-box { position: relative; display: flex; align-items: center; }
    .search-box input {
        height: 40px; width: 180px; background: rgba(255,255,255,0.06);
        border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius-md);
        padding: 0 40px 0 14px; color: var(--text-primary); font-size: 14px;
        transition: var(--transition);
    }
    .search-box input::placeholder { color: var(--text-muted); }
    .search-box input:focus {
        border-color: var(--accent-cyan); box-shadow: 0 0 0 4px rgba(0,217,192,0.15);
        background: rgba(0,217,192,0.06); outline: none;
    }
    .search-box button {
        position: absolute; right: 4px; width: 32px; height: 32px;
        border: none; background: transparent; color: var(--text-secondary);
        cursor: pointer; border-radius: 8px; transition: var(--transition);
        font-size: 14px;
    }
    .search-box button:hover { color: var(--accent-cyan); }
    .hamburger {
        display: none; width: 40px; height: 40px;
        border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.06);
        border-radius: 10px; color: var(--text-primary); font-size: 18px;
        cursor: pointer; align-items: center; justify-content: center;
        transition: var(--transition);
    }
    .hamburger:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }

    /* ===== Hero ===== */
    .hero-section {
        padding: 160px 0 100px;
        background:
            radial-gradient(ellipse at 85% 30%, rgba(0,217,192,0.15), transparent 55%),
            linear-gradient(135deg, #0A1220 0%, #0F1B2D 100%);
        position: relative;
        overflow: hidden;
    }
    .hero-section::before {
        content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
        background-image:
            linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
        background-size: 44px 44px; pointer-events: none;
    }
    .hero-content { position: relative; z-index: 2; }
    .hero-tag {
        display: inline-flex; align-items: center; gap: 6px;
        padding: 6px 16px; border-radius: 999px;
        background: rgba(0,217,192,0.12); border: 1px solid rgba(0,217,192,0.28);
        color: var(--accent-cyan); font-size: 13px; font-weight: 600;
        margin-bottom: 24px; letter-spacing: 1px;
    }
    .hero-tag i { font-size: 12px; }
    .hero-section h1 {
        font-size: clamp(32px, 5.5vw, 60px); font-weight: 800;
        line-height: 1.2; letter-spacing: 0.5px;
        margin-bottom: 20px; color: var(--text-primary);
    }
    .hero-section h1 .highlight {
        color: var(--accent-cyan);
    }
    .hero-subtitle {
        font-size: 17px; color: var(--text-secondary);
        margin-bottom: 36px; max-width: 460px; line-height: 1.7;
    }
    .hero-ctas {
        display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px;
    }
    .hero-stats {
        display: flex; gap: 44px; flex-wrap: wrap;
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 28px;
    }
    .stat-item { display: flex; flex-direction: column; gap: 2px; }
    .stat-num {
        font-size: 32px; font-weight: 800; color: var(--accent-cyan);
        font-variant-numeric: tabular-nums; line-height: 1.2;
        text-shadow: 0 0 20px rgba(0,217,192,0.3);
    }
    .stat-label { font-size: 13px; color: var(--text-muted); }
    .hero-visual { position: relative; z-index: 2; }
    .hero-img-wrap {
        position: relative; border-radius: var(--radius-lg);
        overflow: visible; padding: 10px;
    }
    .hero-img-wrap > img {
        width: 100%; aspect-ratio: 4/3; object-fit: cover;
        border-radius: var(--radius-lg);
        border: 1px solid rgba(255,255,255,0.12);
        box-shadow: var(--shadow-card);
    }
    .glass-card {
        position: absolute; display: flex; align-items: center; gap: 10px;
        background: rgba(255,255,255,0.08);
        backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
        border: 1px solid rgba(255,255,255,0.16);
        border-radius: 16px; padding: 12px 16px;
        box-shadow: 0 12px 40px rgba(0,0,0,0.3);
        z-index: 3;
    }
    .glass-card .glass-icon {
        width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
        border-radius: 10px; background: rgba(0,217,192,0.15); color: var(--accent-cyan);
        font-size: 15px;
    }
    .glass-card strong { display: block; font-size: 14px; line-height: 1.3; color: var(--text-primary); }
    .glass-card span { font-size: 12px; color: var(--text-secondary); }
    .glass-1 { top: 24px; right: -14px; animation: float 4s ease-in-out infinite; }
    .glass-2 { bottom: 30px; left: -14px; animation: float 5s ease-in-out infinite 1s; }
    @keyframes float {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-12px); }
    }

    /* ===== 区块通用 ===== */
    .section-padding { padding: 96px 0; }
    .section-title {
        font-size: clamp(24px, 4vw, 38px);
        font-weight: 700; letter-spacing: 0.5px;
        margin-bottom: 48px; line-height: 1.3;
        position: relative;
    }
    .section-title::before {
        content: ''; display: block; width: 44px; height: 4px;
        background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
        border-radius: 2px; margin-bottom: 16px;
    }

    /* ===== 痛点区 ===== */
    .pain-section {
        padding: 96px 0;
        background: var(--bg-primary);
    }
    .pain-section h2 {
        font-size: clamp(24px, 3.5vw, 34px);
        font-weight: 700; line-height: 1.35;
        margin-bottom: 36px; letter-spacing: 0.3px;
    }
    .pain-list li {
        display: flex; align-items: flex-start; gap: 14px;
        padding: 14px 0; color: var(--text-secondary);
        font-size: 16px; line-height: 1.6;
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .pain-list li:last-child { border-bottom: none; }
    .pain-list li i {
        color: var(--accent-cyan); font-size: 10px;
        margin-top: 10px; flex-shrink: 0;
    }
    .pain-visual {
        border-radius: var(--radius-lg); overflow: hidden;
        position: relative;
        box-shadow: var(--shadow-card);
        border: 1px solid rgba(255,255,255,0.12);
        height: 100%;
        min-height: 320px;
    }
    .pain-visual img {
        width: 100%; height: 100%; object-fit: cover;
        display: block;
    }
    .pain-visual::after {
        content: '';
        position: absolute; inset: 0;
        background: linear-gradient(180deg, transparent 50%, rgba(10,18,32,0.6));
    }

    /* ===== 解决方案区 ===== */
    .solutions-section {
        padding: 96px 0;
        background: var(--bg-secondary);
        position: relative;
        overflow: hidden;
    }
    .solutions-section::before {
        content: ''; position: absolute; top: -100px; right: -100px;
        width: 400px; height: 400px; border-radius: 50%;
        background: radial-gradient(circle, rgba(0,217,192,0.08), transparent 60%);
        pointer-events: none;
    }
    .solution-card {
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-lg);
        padding: 36px 32px;
        height: 100%;
        display: flex; flex-direction: column;
        transition: var(--transition);
        position: relative;
        overflow: hidden;
    }
    .solution-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-card);
        border-color: rgba(0,217,192,0.4);
    }
    .solution-card .sol-icon {
        width: 48px; height: 48px; display: flex; align-items: center; justify-content: center;
        border-radius: 14px; background: rgba(0,217,192,0.12);
        border: 1px solid rgba(0,217,192,0.2);
        color: var(--accent-cyan); font-size: 20px;
        margin-bottom: 20px;
        transition: var(--transition);
    }
    .solution-card:hover .sol-icon {
        background: rgba(0,217,192,0.2);
        transform: scale(1.08);
    }
    .solution-card h3 {
        font-size: 20px; font-weight: 600; color: var(--text-primary);
        margin-bottom: 12px; letter-spacing: 0.3px;
    }
    .solution-card p {
        font-size: 15px; color: var(--text-secondary);
        line-height: 1.7; flex: 1; margin-bottom: 20px;
    }
    .card-link {
        font-size: 14px; font-weight: 600; color: var(--accent-cyan);
        display: inline-flex; align-items: center; gap: 6px;
    }
    .card-link i { transition: transform 0.25s ease; font-size: 12px; }
    .card-link:hover i { transform: translateX(4px); }

    /* ===== 成果区 ===== */
    .results-section {
        padding: 96px 0;
        background: #0F1B2D;
        position: relative;
        overflow: hidden;
    }
    .results-section::before {
        content: ''; position: absolute; left: 50%; top: 50%;
        transform: translate(-50%, -50%);
        width: 600px; height: 600px; border-radius: 50%;
        background: radial-gradient(circle, rgba(0,217,192,0.07), transparent 60%);
        pointer-events: none;
    }
    .result-item {
        text-align: center; padding: 40px 20px;
        position: relative;
    }
    .result-num {
        font-size: 64px; font-weight: 800; color: var(--accent-cyan);
        font-variant-numeric: tabular-nums;
        display: block; line-height: 1.1;
        text-shadow: 0 0 30px rgba(0,217,192,0.25);
    }
    .result-item::after {
        content: ''; display: block; width: 40px; height: 2px;
        background: rgba(0,217,192,0.3); margin: 12px auto;
    }
    .result-label {
        font-size: 14px; color: var(--text-secondary);
        letter-spacing: 1px;
    }

    /* ===== 最新动态 CMS ===== */
    .news-section { padding: 96px 0; background: var(--bg-primary); }
    .section-head {
        display: flex; align-items: center; justify-content: space-between;
        margin-bottom: 40px;
    }
    .section-head h2 {
        font-size: clamp(24px, 3.5vw, 36px); font-weight: 700;
    }
    .view-all {
        font-size: 15px; font-weight: 600; color: var(--text-secondary);
        display: inline-flex; align-items: center; gap: 8px;
        padding: 8px 16px; border-radius: 999px;
        border: 1px solid rgba(255,255,255,0.12);
        transition: var(--transition);
    }
    .view-all:hover {
        color: var(--accent-cyan); border-color: var(--accent-cyan);
        background: rgba(0,217,192,0.06);
    }
    .news-list { display: flex; flex-direction: column; gap: 16px; }
    .news-item {
        display: flex; align-items: center; gap: 20px;
        padding: 20px; border-radius: var(--radius-lg);
        border: 1px solid rgba(255,255,255,0.06);
        background: rgba(255,255,255,0.02);
        transition: var(--transition);
    }
    .news-item:hover {
        background: rgba(0,217,192,0.04);
        border-color: rgba(0,217,192,0.2);
        transform: translateY(-2px);
    }
    .news-thumb {
        width: 80px; height: 80px; border-radius: 12px;
        overflow: hidden; flex-shrink: 0; position: relative;
        display: block;
    }
    .news-thumb img {
        width: 100%; height: 100%; object-fit: cover;
        transition: transform 0.4s ease;
    }
    .news-item:hover .news-thumb img { transform: scale(1.06); }
    .news-body { flex: 1; min-width: 0; }
    .news-body h3 {
        font-size: 17px; font-weight: 600; line-height: 1.4;
        margin-bottom: 6px; white-space: nowrap; overflow: hidden;
        text-overflow: ellipsis;
    }
    .news-body h3 a { color: var(--text-primary); }
    .news-body h3 a:hover { color: var(--accent-cyan); }
    .news-body p {
        font-size: 14px; color: var(--text-secondary);
        line-height: 1.6; display: -webkit-box;
        -webkit-line-clamp: 2; -webkit-box-orient: vertical;
        overflow: hidden; margin-bottom: 8px;
    }
    .news-meta { display: flex; align-items: center; gap: 12px; }
    .news-date { font-size: 13px; color: var(--text-muted); display: inline-flex; align-items: center; gap: 5px; }
    .news-date i { font-size: 12px; }
    .news-cat {
        font-size: 12px; padding: 3px 10px; border-radius: 999px;
        background: rgba(0,217,192,0.12); color: var(--accent-cyan);
        font-weight: 500;
    }
    .news-more {
        font-size: 14px; font-weight: 600; color: var(--accent-cyan);
        white-space: nowrap; display: inline-flex; align-items: center; gap: 4px;
        flex-shrink: 0;
    }
    .news-more i { font-size: 12px; }
    .news-more:hover { color: var(--text-primary); }
    .news-empty {
        background: rgba(255,255,255,0.04);
        border: 1px solid rgba(255,255,255,0.12);
        backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
        border-radius: var(--radius-lg);
        padding: 60px 40px; text-align: center;
        display: flex; flex-direction: column; align-items: center; gap: 16px;
    }
    .news-empty i {
        font-size: 48px; color: rgba(255,255,255,0.1);
    }
    .news-empty p { font-size: 15px; color: var(--text-muted); }
    .news-empty .btn { margin-top: 8px; }
    .news-sidebar { display: flex; flex-direction: column; gap: 32px; }
    .tag-panel {
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-lg);
        padding: 28px;
    }
    .tag-panel h3 {
        font-size: 16px; font-weight: 600; margin-bottom: 20px;
        color: var(--text-primary);
    }
    .tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag-list a {
        font-size: 13px; padding: 6px 14px; border-radius: 999px;
        background: rgba(255,255,255,0.06);
        border: 1px solid rgba(255,255,255,0.08);
        color: var(--text-secondary);
        transition: var(--transition);
    }
    .tag-list a:hover {
        background: rgba(0,217,192,0.15);
        border-color: var(--accent-cyan);
        color: var(--accent-cyan);
    }
    .recommend-card {
        background: var(--glass-bg);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-lg);
        overflow: hidden;
        transition: var(--transition);
    }
    .recommend-card:hover {
        transform: translateY(-4px);
        border-color: rgba(255,107,61,0.4);
        box-shadow: var(--shadow-card);
    }
    .recommend-card img {
        width: 100%; height: 160px; object-fit: cover;
        display: block;
    }
    .recommend-card h4 {
        font-size: 16px; font-weight: 600; padding: 16px 20px 4px;
        color: var(--text-primary);
    }
    .recommend-card p {
        font-size: 14px; color: var(--text-secondary);
        padding: 0 20px 20px; line-height: 1.6;
        display: -webkit-box; -webkit-line-clamp: 2;
        -webkit-box-orient: vertical; overflow: hidden;
    }

    /* ===== 证言区 ===== */
    .testimonials-section {
        padding: 96px 0;
        background: var(--bg-secondary);
        position: relative;
        overflow: hidden;
    }
    .testimonial-card {
        background: rgba(255,255,255,0.04);
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: var(--radius-lg);
        padding: 36px 30px;
        position: relative;
        transition: var(--transition);
        height: 100%;
        display: flex; flex-direction: column;
    }
    .testimonial-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-card);
        border-color: rgba(124,196,255,0.3);
    }
    .testimonial-card:nth-child(2) { transform: translateY(24px); }
    .testimonial-card:nth-child(2):hover { transform: translateY(18px); }
    .quote-mark {
        font-size: 64px; line-height: 1; color: var(--accent-cyan);
        font-family: Georgia, serif; margin-bottom: 12px;
        opacity: 0.8; display: block;
    }
    .testimonial-card > p {
        font-size: 15px; color: var(--text-secondary);
        line-height: 1.8; flex: 1; margin-bottom: 20px;
    }
    .stars { color: #F5B50A; font-size: 15px; letter-spacing: 3px; margin-bottom: 16px; }
    .testimonial-author {
        display: flex; align-items: center; gap: 12px;
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 16px;
    }
    .testimonial-author img {
        width: 40px; height: 40px; border-radius: 50%;
        object-fit: cover; border: 1px solid rgba(255,255,255,0.15);
    }
    .testimonial-author strong {
        font-size: 14px; color: var(--text-primary); display: block;
    }
    .testimonial-author span {
        font-size: 13px; color: var(--text-muted);
    }

    /* ===== FAQ ===== */
    .faq-section { padding: 96px 0; background: var(--bg-primary); }
    .faq-list {
        max-width: 800px; margin: 0 auto;
        display: flex; flex-direction: column; gap: 16px;
    }
    .faq-item {
        background: rgba(255,255,255,0.04);
        border: 1px solid rgba(255,255,255,0.08);
        border-radius: 16px;
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover { border-color: rgba(0,217,192,0.2); }
    .faq-item-header {
        display: flex; align-items: center; justify-content: space-between;
        padding: 18px 24px; cursor: pointer;
        font-size: 16px; font-weight: 600; color: var(--text-primary);
        background: transparent; border: none; width: 100%;
        text-align: left; transition: var(--transition);
    }
    .faq-item-header:hover { color: var(--accent-cyan); }
    .faq-item-header i {
        color: var(--accent-cyan); transition: transform 0.3s ease;
        font-size: 14px; flex-shrink: 0;
    }
    .faq-item.active .faq-item-header i { transform: rotate(180deg); }
    .faq-item-content {
        max-height: 0; overflow: hidden;
        transition: max-height 0.35s ease;
        padding: 0 24px;
        color: var(--text-secondary); font-size: 15px; line-height: 1.7;
    }
    .faq-item.active .faq-item-content {
        max-height: 300px; padding: 0 24px 20px;
    }

    /* ===== CTA区 ===== */
    .cta-section {
        padding: 100px 0;
        background:
            radial-gradient(ellipse at 25% 50%, rgba(0,217,192,0.1), transparent 55%),
            radial-gradient(ellipse at 75% 50%, rgba(255,107,61,0.12), transparent 55%),
            #0F1B2D;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
        background-image:
            linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
        background-size: 60px 60px; pointer-events: none;
    }
    .cta-section .grid-container { position: relative; z-index: 2; }
    .cta-section h2 {
        font-size: clamp(28px, 4vw, 40px); font-weight: 800;
        margin-bottom: 16px; letter-spacing: 0.5px;
    }
    .cta-section p {
        font-size: 17px; color: var(--text-secondary);
        margin-bottom: 40px;
    }
    .cta-section .btn { position: relative; z-index: 2; }

    /* ===== 页脚 ===== */
    .site-footer {
        background: #0B1626;
        border-top: 2px solid;
        border-image: linear-gradient(90deg, #FF6B3D, #00D9C0) 1;
        padding: 70px 0 30px;
    }
    .footer-brand .brand { margin-bottom: 14px; }
    .footer-brand p {
        font-size: 14px; color: var(--text-muted);
        line-height: 1.6;
    }
    .site-footer h4 {
        font-size: 15px; font-weight: 600; color: var(--text-primary);
        margin-bottom: 20px; letter-spacing: 1px;
    }
    .site-footer ul li { margin-bottom: 10px; }
    .site-footer ul li a {
        font-size: 14px; color: var(--text-secondary);
        transition: var(--transition);
    }
    .site-footer ul li a:hover { color: var(--accent-cyan); padding-left: 4px; }
    .site-footer .contact-list li {
        display: flex; align-items: center; gap: 8px;
        font-size: 14px; color: var(--text-secondary);
    }
    .site-footer .contact-list i { color: var(--accent-cyan); }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.08);
        margin-top: 50px; padding-top: 24px;
        text-align: center;
    }
    .footer-bottom p {
        font-size: 13px; color: var(--text-muted);
    }

    /* ===== 响应式 ===== */
    @media screen and (max-width: 1024px) {
        .hero-section { padding-top: 140px; }
        .hero-visual { margin-top: 40px; }
        .glass-1 { right: 10px; }
        .glass-2 { left: 10px; }
        .testimonial-card:nth-child(2) { transform: none; }
        .testimonial-card:nth-child(2):hover { transform: translateY(-6px); }
    }
    @media screen and (max-width: 768px) {
        .search-box { display: none; }
        .main-nav {
            position: fixed; top: 64px; left: 0; right: 0;
            background: rgba(10,18,32,0.97);
            backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
            flex-direction: column; align-items: center;
            padding: 24px 16px; gap: 20px;
            transform: translateY(-120%); transition: transform 0.3s ease;
            z-index: 99;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .main-nav.show { transform: translateY(0); }
        .hamburger { display: flex; }
        .nav-actions .btn { display: none; }
        .section-padding, .pain-section, .solutions-section,
        .results-section, .news-section, .testimonials-section,
        .faq-section, .cta-section { padding: 64px 0; }
        .hero-stats { gap: 24px; }
        .stat-num { font-size: 26px; }
        .result-num { font-size: 44px; }
        .news-item { flex-direction: row; flex-wrap: wrap; }
        .news-more { display: none; }
        .news-thumb { width: 64px; height: 64px; }
        .news-body h3 { font-size: 15px; }
    }
    @media screen and (max-width: 520px) {
        .hero-section { padding-top: 120px; padding-bottom: 64px; }
        .hero-ctas .btn { width: 100%; }
        .brand-text { font-size: 16px; }
        .news-item { padding: 14px; gap: 12px; }
        .news-thumb { width: 56px; height: 56px; border-radius: 10px; }
        .news-body h3 { font-size: 14px; }
        .news-body p { font-size: 13px; }
        .section-title { font-size: 22px; }
        .glass-1, .glass-2 { display: none; }
        .footer-bottom p { font-size: 12px; }
    }

/* roulang page: article */
:root{
    --bg:#0A1220;
    --bg-2:#0F1B2D;
    --bg-3:#0B1626;
    --card:rgba(255,255,255,0.06);
    --card-border:rgba(255,255,255,0.12);
    --accent:#00D9C0;
    --accent-dark:#00B8A8;
    --hot:#FF6B3D;
    --hot-light:#FF8A5C;
    --blue:#7CC4FF;
    --text:#F1F7FB;
    --text-2:#9FB3C8;
    --text-3:#5E7188;
    --gold:#F5B50A;
    --radius:20px;
    --radius-sm:12px;
    --shadow:0 20px 60px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.08);
    --transition:all 0.25s ease;
    --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:var(--font);
    font-size:16px;
    line-height:1.8;
    letter-spacing:0.2px;
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--accent);text-decoration:none;transition:var(--transition);}
a:hover{color:var(--accent);}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.3;letter-spacing:0.5px;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
.grid-container{max-width:1200px;}
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 32px;
    border-radius:var(--radius-sm);
    font-weight:600;
    font-size:15px;
    line-height:1;
    border:1px solid transparent;
    cursor:pointer;
    transition:var(--transition);
    background:transparent;
    color:var(--text);
    text-align:center;
    white-space:nowrap;
}
.btn i{font-size:14px;}
.btn:focus-visible,.nav-toggle:focus-visible,a:focus-visible{
    outline:2px solid #fff;
    outline-offset:3px;
    border-radius:6px;
}
.btn-primary{
    background:linear-gradient(135deg,var(--hot),var(--hot-light));
    box-shadow:0 6px 30px rgba(255,107,61,0.35);
    color:#fff;
}
.btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 10px 40px rgba(255,107,61,0.45);
    color:#fff;
}
.btn-primary:active{
    transform:translateY(0);
    box-shadow:0 4px 20px rgba(255,107,61,0.25);
}
.btn-secondary{
    background:linear-gradient(135deg,var(--accent),var(--accent-dark));
    box-shadow:0 6px 24px rgba(0,217,192,0.25);
    color:#0A1220;
}
.btn-secondary:hover{
    transform:translateY(-2px);
    box-shadow:0 10px 32px rgba(0,217,192,0.35);
    color:#0A1220;
}
.btn-secondary:active{
    transform:translateY(0);
    box-shadow:0 4px 16px rgba(0,217,192,0.2);
}
.btn-outline{
    border-color:rgba(255,255,255,0.2);
    color:var(--text-2);
    background:transparent;
}
.btn-outline:hover{
    border-color:var(--accent);
    color:var(--accent);
    box-shadow:0 0 0 4px rgba(0,217,192,0.08);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}

/* Header */
.site-header{
    position:sticky;
    top:0;
    z-index:100;
    background:rgba(10,18,32,0.82);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border-bottom:1px solid rgba(255,255,255,0.06);
}
.nav-container{
    max-width:1280px;
    margin:0 auto;
    padding:0 28px;
    height:64px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
}
.nav-left{
    display:flex;
    align-items:center;
    gap:32px;
    flex:1;
    min-width:0;
}
.brand{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
}
.brand-logo{
    display:flex;
    align-items:center;
    justify-content:center;
    width:40px;
    height:40px;
    border-radius:12px;
    background:rgba(0,217,192,0.08);
    border:1px solid rgba(0,217,192,0.25);
}
.brand-text{
    font-size:20px;
    font-weight:800;
    color:var(--text);
    line-height:1.2;
    letter-spacing:0.5px;
    white-space:nowrap;
}
.brand-text small{
    display:block;
    font-size:11px;
    font-weight:500;
    color:var(--accent);
    letter-spacing:2px;
    text-transform:uppercase;
}
.main-nav{
    display:flex;
    align-items:center;
    gap:28px;
    flex-wrap:nowrap;
}
.main-nav a{
    font-size:15px;
    font-weight:500;
    color:var(--text-2);
    position:relative;
    padding:6px 2px;
    white-space:nowrap;
}
.main-nav a::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    width:0;
    height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--accent),var(--blue));
    transition:var(--transition);
}
.main-nav a:hover{color:var(--accent);}
.main-nav a:hover::after{width:100%;}
.main-nav a.active{color:#fff;}
.main-nav a.active::after{width:100%;}
.nav-right{
    display:flex;
    align-items:center;
    gap:16px;
    flex-shrink:0;
}
.nav-search{
    position:relative;
    display:flex;
    align-items:center;
}
.nav-search input{
    width:200px;
    height:40px;
    border-radius:999px;
    border:1px solid rgba(255,255,255,0.12);
    background:rgba(255,255,255,0.06);
    padding:0 16px 0 40px;
    color:var(--text);
    font-size:14px;
    outline:none;
    transition:var(--transition);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{
    border-color:var(--accent);
    background:rgba(0,217,192,0.05);
    box-shadow:0 0 0 4px rgba(0,217,192,0.15);
}
.nav-search i{
    position:absolute;
    left:16px;
    color:var(--text-3);
    font-size:13px;
    pointer-events:none;
}
.nav-toggle{
    display:none;
    width:40px;
    height:40px;
    border-radius:10px;
    border:1px solid rgba(255,255,255,0.12);
    background:rgba(255,255,255,0.06);
    color:var(--text);
    cursor:pointer;
    align-items:center;
    justify-content:center;
    transition:var(--transition);
}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent);}

/* Article Page */
.article-main{padding:0 0 80px;}
.breadcrumb-bar{
    padding:36px 0 12px;
    font-size:14px;
    color:var(--text-3);
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
}
.breadcrumb-bar a{color:var(--text-2);}
.breadcrumb-bar a:hover{color:var(--accent);}
.breadcrumb-bar .sep{color:var(--text-3);}
.category-pill{
    display:inline-flex;
    align-items:center;
    padding:4px 14px;
    border-radius:999px;
    background:rgba(0,217,192,0.12);
    color:var(--accent);
    font-size:13px;
    font-weight:600;
    border:1px solid rgba(0,217,192,0.2);
}
.breadcrumb-bar .current{
    color:var(--text-2);
    max-width:420px;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
}
.article-head{
    padding:24px 0 8px;
    background:linear-gradient(180deg,rgba(0,217,192,0.04),transparent 100%);
}
.article-head h1{
    font-size:clamp(28px,4vw,44px);
    font-weight:800;
    line-height:1.3;
    margin:16px 0 20px;
    letter-spacing:0.5px;
}
.article-meta{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px 24px;
    font-size:14px;
    color:var(--text-2);
    padding-bottom:24px;
    border-bottom:1px solid rgba(255,255,255,0.08);
}
.article-meta span{
    display:inline-flex;
    align-items:center;
    gap:8px;
}
.article-meta i{color:var(--accent);font-size:13px;}

.article-content-wrap{
    padding:48px 0 0;
}
.article-body{
    max-width:720px;
    margin:0 auto;
    font-size:16px;
    line-height:1.9;
    color:var(--text-2);
}
.article-body p{
    margin-bottom:1.5em;
    line-height:1.9;
}
.article-body h2{
    font-size:24px;
    font-weight:700;
    color:var(--text);
    margin:48px 0 20px;
    padding-left:16px;
    border-left:4px solid var(--accent);
    border-radius:2px;
    line-height:1.4;
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{
    font-size:20px;
    font-weight:600;
    color:var(--text);
    margin:32px 0 16px;
    line-height:1.5;
}
.article-body a{
    color:var(--accent);
    text-decoration:underline;
    text-underline-offset:3px;
    text-decoration-color:rgba(0,217,192,0.4);
}
.article-body a:hover{text-decoration-color:var(--accent);}
.article-body blockquote{
    margin:24px 0;
    padding:20px 24px;
    border-left:4px solid var(--accent);
    border-radius:0 12px 12px 0;
    background:rgba(0,217,192,0.05);
    color:var(--text-2);
    font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,.article-body ol{
    margin:0 0 1.5em;
    padding-left:1.5em;
}
.article-body li{
    margin-bottom:10px;
    line-height:1.8;
}
.article-body li::marker{color:var(--accent);}
.article-body img{
    width:100%;
    height:auto;
    border-radius:16px;
    margin:24px 0 8px;
    border:1px solid rgba(255,255,255,0.1);
}
.article-body figure{
    margin:24px 0;
}
.article-body figcaption{
    text-align:center;
    font-size:13px;
    color:var(--text-3);
    margin-top:8px;
}
.article-body hr{
    border:none;
    height:1px;
    background:rgba(255,255,255,0.1);
    margin:40px 0;
}
.article-body strong{color:var(--text);font-weight:700;}
.article-body code{
    background:rgba(0,217,192,0.1);
    color:var(--accent);
    padding:2px 8px;
    border-radius:6px;
    font-size:14px;
}

.article-empty{
    max-width:720px;
    margin:0 auto;
    text-align:center;
    padding:80px 24px;
    background:var(--card);
    border:1px solid var(--card-border);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
}
.article-empty i{
    font-size:48px;
    color:var(--text-3);
    margin-bottom:20px;
}
.article-empty p{
    font-size:20px;
    font-weight:600;
    color:var(--text);
    margin-bottom:28px;
}

/* End CTA */
.end-cta{
    padding:80px 0 0;
    max-width:720px;
    margin:0 auto;
}
.end-cta-card{
    background:linear-gradient(135deg,rgba(0,217,192,0.06),rgba(255,107,61,0.05));
    border:1px solid rgba(0,217,192,0.2);
    border-radius:var(--radius);
    padding:40px;
    text-align:center;
    position:relative;
    overflow:hidden;
}
.end-cta-card::before{
    content:"";
    position:absolute;
    top:-40px;
    right:-40px;
    width:120px;
    height:120px;
    border-radius:50%;
    background:rgba(0,217,192,0.1);
    filter:blur(40px);
}
.end-cta-card::after{
    content:"";
    position:absolute;
    bottom:-40px;
    left:-40px;
    width:120px;
    height:120px;
    border-radius:50%;
    background:rgba(255,107,61,0.1);
    filter:blur(40px);
}
.end-cta-card h3{
    font-size:24px;
    font-weight:700;
    color:var(--text);
    margin-bottom:12px;
    position:relative;
    z-index:1;
}
.end-cta-card p{
    color:var(--text-2);
    font-size:15px;
    margin-bottom:28px;
    position:relative;
    z-index:1;
}
.end-cta-card .btn{position:relative;z-index:1;}

/* Related */
.related-section{
    padding:80px 0 96px;
    background:linear-gradient(180deg,transparent,rgba(0,217,192,0.03));
}
.section-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-bottom:40px;
}
.section-head h2{
    font-size:clamp(24px,3.5vw,36px);
    font-weight:700;
    color:var(--text);
}
.more-link{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    font-weight:600;
    color:var(--accent);
    padding:8px 4px;
}
.more-link i{
    transition:transform 0.25s ease;
}
.more-link:hover i{transform:translateX(4px);}
.related-card{
    display:block;
    background:var(--card);
    border:1px solid var(--card-border);
    border-radius:var(--radius);
    overflow:hidden;
    margin-bottom:24px;
    box-shadow:0 10px 40px rgba(0,0,0,0.2);
    transition:var(--transition);
}
.related-card:hover{
    transform:translateY(-6px);
    border-color:rgba(0,217,192,0.4);
    box-shadow:var(--shadow);
}
.related-thumb{
    height:180px;
    background-size:cover;
    background-position:center;
    position:relative;
}
.related-thumb::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,transparent 40%,rgba(10,18,32,0.6));
    opacity:0.7;
    transition:var(--transition);
}
.related-card:hover .related-thumb::after{opacity:0.5;}
.related-info{
    padding:24px;
}
.related-info h3{
    font-size:18px;
    font-weight:600;
    color:var(--text);
    margin-bottom:10px;
    line-height:1.5;
    transition:var(--transition);
}
.related-card:hover .related-info h3{color:var(--accent);}
.related-info p{
    font-size:14px;
    color:var(--text-2);
    line-height:1.7;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.related-back{
    text-align:center;
    margin-top:16px;
}

/* Footer */
.site-footer{
    background:var(--bg-3);
    border-top:2px solid transparent;
    border-image:linear-gradient(90deg,var(--hot),var(--accent)) 1;
    padding:64px 0 0;
}
.footer-brand{
    display:flex;
    flex-direction:column;
    gap:12px;
}
.footer-brand .brand{justify-content:flex-start;}
.footer-brand p{
    font-size:14px;
    color:var(--text-2);
    line-height:1.7;
    max-width:240px;
}
.site-footer h4{
    font-size:16px;
    font-weight:600;
    color:var(--text);
    margin-bottom:20px;
}
.site-footer ul{
    list-style:none;
}
.site-footer ul li{
    margin-bottom:12px;
}
.site-footer ul a{
    font-size:14px;
    color:var(--text-2);
    line-height:1.6;
    position:relative;
    padding-bottom:2px;
}
.site-footer ul a::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    width:0;
    height:1px;
    background:var(--accent);
    transition:var(--transition);
}
.site-footer ul a:hover{
    color:var(--accent);
    padding-left:4px;
}
.site-footer ul a:hover::after{width:calc(100% - 4px);}
.contact-list li{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:14px;
    color:var(--text-2);
}
.contact-list i{
    color:var(--accent);
    font-size:14px;
}
.footer-bottom{
    margin-top:48px;
    padding:24px 0;
    border-top:1px solid rgba(255,255,255,0.06);
    text-align:center;
}
.footer-bottom p{
    font-size:14px;
    color:var(--text-3);
}

/* Responsive */
@media screen and (max-width:1024px){
    .nav-container{padding:0 20px;}
    .nav-left{gap:20px;}
    .main-nav{gap:20px;}
    .nav-search input{width:160px;}
}
@media screen and (max-width:768px){
    .nav-container{
        height:auto;
        flex-wrap:wrap;
        padding:12px 16px;
        gap:12px;
    }
    .nav-left{
        width:100%;
        justify-content:space-between;
        flex-wrap:wrap;
    }
    .main-nav{
        width:100%;
        flex-direction:column;
        align-items:flex-start;
        gap:0;
        padding-top:12px;
        display:none;
    }
    .nav-left.nav-open .main-nav{
        display:flex;
    }
    .main-nav a{
        width:100%;
        padding:12px 0;
        border-bottom:1px solid rgba(255,255,255,0.06);
    }
    .main-nav a::after{display:none;}
    .main-nav a.active{color:var(--accent);}
    .nav-right{
        width:100%;
        justify-content:space-between;
        gap:12px;
    }
    .nav-search{
        flex:1;
    }
    .nav-search input{
        width:100%;
    }
    .nav-toggle{
        display:flex;
    }
    .btn-sm {
        height:40px;
        padding:0 16px;
        font-size:14px;
    }
    .breadcrumb-bar{
        padding-top:24px;
    }
    .article-content-wrap{
        padding-top:32px;
    }
    .article-body{
        font-size:15px;
    }
    .article-body h2{
        font-size:22px;
        margin-top:36px;
    }
    .article-body h3{
        font-size:19px;
        margin-top:24px;
    }
    .end-cta-card{
        padding:32px 20px;
    }
    .end-cta-card h3{
        font-size:20px;
    }
    .related-section{
        padding:64px 0;
    }
    .section-head{
        margin-bottom:28px;
    }
    .related-info{
        padding:20px;
    }
    .related-thumb{
        height:160px;
    }
    .site-footer{
        padding-top:48px;
    }
    .site-footer .cell{
        margin-bottom:32px;
    }
}
@media screen and (max-width:520px){
    .article-head h1{
        font-size:24px;
    }
    .article-meta{
        gap:6px 16px;
        font-size:13px;
    }
    .article-body{
        font-size:15px;
        line-height:1.85;
    }
    .article-body blockquote{
        padding:16px 18px;
    }
    .end-cta-card h3{
        font-size:18px;
    }
    .end-cta-card .btn{
        width:100%;
    }
    .section-head{
        flex-direction:column;
        align-items:flex-start;
        gap:12px;
    }
    .related-thumb{
        height:140px;
    }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --bg-primary: #0A1220;
            --bg-alt: #0F1B2D;
            --bg-footer: #0B1626;
            --card-bg: rgba(255,255,255,0.06);
            --card-border: rgba(255,255,255,0.12);
            --primary: #00D9C0;
            --primary-dark: #00B8A8;
            --accent: #FF6B3D;
            --accent-light: #FF8A5C;
            --blue-light: #7CC4FF;
            --text-main: #F1F7FB;
            --text-secondary: #9FB3C8;
            --text-muted: #5E7188;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 20px 60px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.08);
            --shadow-hover: 0 30px 80px rgba(0,0,0,0.45);
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
        }

        /* ===== Base / Reset ===== */
        *, *::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: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            letter-spacing: 0.2px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: all .25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        ul {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        .grid-container {
            max-width: 1200px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10,18,32,0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 64px;
            padding: 10px 0;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .brand-text small {
            display: block;
            font-size: 10px;
            font-weight: 500;
            color: var(--text-muted);
            letter-spacing: 2px;
            line-height: 1.2;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all .25s ease;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: rgba(0,217,192,0.08);
        }
        .main-nav a.active {
            color: var(--primary);
            background: rgba(0,217,192,0.12);
            box-shadow: inset 0 0 0 1px rgba(0,217,192,0.3);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            position: relative;
        }
        .search-box input {
            height: 40px;
            width: 190px;
            border-radius: 999px;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.12);
            padding: 0 40px 0 16px;
            color: var(--text-main);
            font-size: 14px;
            outline: none;
            transition: all .25s ease;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(0,217,192,0.15);
            background: rgba(255,255,255,0.08);
        }
        .search-box i {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }
        .btn-sm {
            height: 38px;
            padding: 0 22px;
            font-size: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all .25s ease;
            outline: none;
            line-height: 1;
            text-decoration: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #fff;
            box-shadow: 0 6px 30px rgba(255,107,61,0.35);
        }
        .btn-primary:hover {
            box-shadow: 0 10px 36px rgba(255,107,61,0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 16px rgba(255,107,61,0.3);
        }
        .btn-primary:focus-visible {
            box-shadow: 0 0 0 2px var(--bg-primary), 0 0 0 4px var(--accent);
        }
        .btn-secondary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 6px 24px rgba(0,217,192,0.25);
        }
        .btn-secondary:hover {
            box-shadow: 0 10px 30px rgba(0,217,192,0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible {
            box-shadow: 0 0 0 2px var(--bg-primary), 0 0 0 4px var(--primary);
        }
        .btn-large {
            height: 52px;
            padding: 0 44px;
            font-size: 16px;
        }

        /* ===== Badge & Section Head ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 999px;
            background: rgba(0,217,192,0.12);
            border: 1px solid rgba(0,217,192,0.3);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 999px;
            background: rgba(0,217,192,0.1);
            border: 1px solid rgba(0,217,192,0.25);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-head h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
        }

        /* ===== Category Hero ===== */
        .cat-hero {
            position: relative;
            padding: 100px 0;
            background:
                linear-gradient(135deg, rgba(10,18,32,0.94), rgba(15,27,45,0.97)),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            overflow: hidden;
        }
        .cat-hero::before {
            content: "";
            position: absolute;
            top: -140px;
            right: -60px;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(0,217,192,0.16) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cat-hero::after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-image:
                linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
            background-size: 56px 56px;
            pointer-events: none;
        }
        .cat-hero .grid-container {
            position: relative;
            z-index: 2;
        }
        .cat-hero h1 {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 800;
            line-height: 1.25;
            margin: 24px 0 16px;
            letter-spacing: 0.5px;
        }
        .cat-hero-sub {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 560px;
            line-height: 1.8;
        }
        .btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 44px;
        }
        .hero-stats {
            display: flex;
            gap: 44px;
            flex-wrap: wrap;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .stat-item {
            text-align: left;
        }
        .stat-num {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            display: block;
            line-height: 1.2;
            text-shadow: 0 0 30px rgba(0,217,192,0.25);
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
        }
        .cat-hero-visual {
            position: relative;
        }
        .cat-hero-visual img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
            border: 1px solid rgba(255,255,255,0.1);
        }
        .float-card {
            position: absolute;
            bottom: 20px;
            left: -16px;
            background: rgba(15,27,45,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(0,217,192,0.3);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
            font-size: 14px;
            font-weight: 500;
            box-shadow: var(--shadow);
        }
        .float-card i {
            color: var(--primary);
            font-size: 16px;
        }
        .float-card-2 {
            position: absolute;
            top: 20px;
            right: -12px;
            background: rgba(15,27,45,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255,107,61,0.3);
            border-radius: var(--radius-sm);
            padding: 10px 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-main);
            font-size: 13px;
            font-weight: 500;
            box-shadow: var(--shadow);
        }
        .float-card-2 i {
            color: var(--accent);
        }

        /* ===== Intro ===== */
        .cat-intro {
            padding: 96px 0;
        }
        .cat-intro h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.3;
        }
        .cat-intro p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .intro-image {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 5 / 4;
            border: 1px solid rgba(255,255,255,0.08);
        }

        /* ===== Cards ===== */
        .cat-cards {
            padding: 96px 0;
            background: var(--bg-alt);
        }
        .cat-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 32px;
            height: 100%;
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }
        .cat-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at top right, rgba(0,217,192,0.06) 0%, transparent 60%);
            opacity: 0;
            transition: opacity .3s ease;
            pointer-events: none;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0,217,192,0.4);
            box-shadow: var(--shadow-hover);
        }
        .cat-card:hover::before {
            opacity: 1;
        }
        .cat-card-icon {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: rgba(0,217,192,0.12);
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
            transition: background .3s ease, color .3s ease;
        }
        .cat-card:hover .cat-card-icon {
            background: rgba(0,217,192,0.2);
            color: var(--primary);
        }
        .cat-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .cat-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 0;
        }
        .cat-card-tags {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 18px;
            padding-top: 16px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .cat-card-tags span {
            font-size: 12px;
            color: var(--blue-light);
            padding: 4px 10px;
            background: rgba(124,196,255,0.08);
            border-radius: 999px;
        }
        .cat-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            transition: gap .25s ease, color .25s ease;
        }
        .cat-card-link:hover {
            gap: 10px;
            color: var(--primary);
        }

        /* ===== FAQ ===== */
        .cat-faq {
            padding: 96px 0;
        }
        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
            background: transparent;
            border: none;
        }
        .faq-accordion .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .3s ease, background .3s ease;
        }
        .faq-accordion .accordion-item.is-active {
            border-color: rgba(0,217,192,0.4);
            background: rgba(0,217,192,0.03);
        }
        .faq-accordion .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: transparent;
            border: none;
            line-height: 1.5;
            transition: color .25s ease, background .25s ease;
        }
        .faq-accordion .accordion-title:hover,
        .faq-accordion .accordion-title:focus {
            background: rgba(0,217,192,0.05);
            color: var(--primary);
            outline: none;
        }
        .faq-accordion .accordion-title::before,
        .faq-accordion .accordion-title::after {
            content: none !important;
            border: none !important;
            transform: none !important;
            width: auto;
            height: auto;
        }
        .faq-accordion .accordion-title i {
            transition: transform .3s ease;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-accordion .accordion-item.is-active .accordion-title i {
            transform: rotate(180deg);
        }
        .faq-accordion .accordion-content {
            padding: 4px 22px 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            border: none;
            background: transparent;
        }

        /* ===== CTA ===== */
        .cat-cta {
            padding: 96px 0;
            position: relative;
            overflow: hidden;
            background: var(--bg-alt);
            text-align: center;
        }
        .cat-cta::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 30% 50%, rgba(0,217,192,0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(255,107,61,0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .cat-cta .grid-container {
            position: relative;
            z-index: 2;
        }
        .cat-cta h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .cat-cta p {
            color: var(--text-secondary);
            font-size: 17px;
            margin-bottom: 36px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            padding: 64px 0 0;
            border-top: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--accent), var(--primary)) 1;
        }
        .footer-brand .brand {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 260px;
        }
        .site-footer h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text-main);
            letter-spacing: 0.3px;
        }
        .site-footer ul li {
            margin-bottom: 12px;
        }
        .site-footer ul a {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color .25s ease;
        }
        .site-footer ul a:hover {
            color: var(--primary);
        }
        .contact-list li {
            color: var(--text-secondary);
            font-size: 14px;
        }
        .contact-list i {
            margin-right: 8px;
            color: var(--primary);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            margin-top: 48px;
            padding: 20px 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            text-align: center;
        }
        .footer-bottom p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Media Queries ===== */
        @media (max-width: 1024px) {
            .cat-hero {
                padding: 76px 0;
            }
            .cat-intro,
            .cat-cards,
            .cat-faq,
            .cat-cta {
                padding: 76px 0;
            }
            .search-box input {
                width: 140px;
            }
        }

        @media (max-width: 640px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
                padding: 12px 0;
            }
            .header-actions {
                margin-left: auto;
            }
            .search-box {
                display: none;
            }
            .main-nav {
                order: 3;
                width: 100%;
                display: flex;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                gap: 4px;
                padding-bottom: 4px;
            }
            .main-nav a {
                padding: 7px 14px;
                font-size: 14px;
            }
            .cat-hero {
                padding: 56px 0;
            }
            .cat-intro,
            .cat-cards,
            .cat-faq,
            .cat-cta {
                padding: 56px 0;
            }
            .cat-hero h1 {
                font-size: 30px;
            }
            .cat-hero-sub {
                font-size: 15px;
            }
            .hero-stats {
                gap: 20px;
                padding-top: 24px;
            }
            .stat-num {
                font-size: 28px;
            }
            .float-card {
                left: 10px;
                bottom: 10px;
                padding: 10px 14px;
                font-size: 13px;
            }
            .float-card-2 {
                top: 10px;
                right: 8px;
                padding: 8px 12px;
                font-size: 12px;
            }
            .btn-group {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
            }
            .btn-group .btn {
                width: 100%;
            }
            .section-head {
                margin-bottom: 40px;
            }
            .cat-card {
                padding: 26px;
            }
            .intro-image {
                margin-top: 24px;
            }
            .faq-accordion .accordion-title {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-accordion .accordion-content {
                padding: 2px 18px 16px;
                font-size: 14px;
            }
            .btn-large {
                width: 100%;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .site-footer h4 {
                margin-top: 24px;
            }
        }