/* roulang page: index */
/* ===== Design Variables ===== */
    :root {
        --primary: #0f172a;
        --primary-light: #1e293b;
        --primary-dark: #070d18;
        --accent: #3b82f6;
        --accent-hover: #2563eb;
        --accent-light: #60a5fa;
        --gold: #f59e0b;
        --gold-hover: #d97706;
        --bg: #ffffff;
        --bg-alt: #f1f5f9;
        --bg-dark: #0b1120;
        --text: #1e293b;
        --text-light: #64748b;
        --text-white: #f1f5f9;
        --text-muted: #94a3b8;
        --border: #e2e8f0;
        --border-light: #f1f5f9;
        --radius: 16px;
        --radius-sm: 10px;
        --radius-lg: 24px;
        --shadow: 0 4px 24px rgba(0,0,0,0.06);
        --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
        --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
        --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
        --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        --max-width: 1200px;
        --nav-height: 72px;
        --hero-height: 92vh;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body {
        font-family: var(--font);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; transition: color var(--transition); }
    button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--primary); }
    h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
    h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
    h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
    h4 { font-size: 1.15rem; }
    p { margin-bottom: 1rem; }
    .container {
        width: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Utility ===== */
    .text-accent { color: var(--accent); }
    .text-gold { color: var(--gold); }
    .text-white { color: var(--text-white); }
    .text-muted { color: var(--text-muted); }
    .text-center { text-align: center; }
    .section-pad { padding: 80px 0; }
    .section-title { margin-bottom: 16px; }
    .section-sub { font-size: 1.1rem; color: var(--text-light); max-width: 640px; margin: 0 auto 48px; }
    .badge {
        display: inline-block;
        padding: 4px 14px;
        border-radius: 50px;
        font-size: 0.82rem;
        font-weight: 600;
        letter-spacing: 0.3px;
        background: var(--accent);
        color: #fff;
        margin-bottom: 12px;
    }
    .badge-gold { background: var(--gold); color: #1e293b; }
    .badge-outline { background: transparent; border: 1px solid var(--border); color: var(--text-light); }

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 0.95rem;
        cursor: pointer;
        transition: all var(--transition);
        border: 2px solid transparent;
        background: var(--accent);
        color: #fff;
    }
    .btn:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(59,130,246,0.30); }
    .btn:active { transform: translateY(0); }
    .btn-gold { background: var(--gold); color: #1e293b; }
    .btn-gold:hover { background: var(--gold-hover); box-shadow: 0 8px 24px rgba(245,158,11,0.35); }
    .btn-outline { background: transparent; border-color: rgba(255,255,255,0.4); color: #fff; }
    .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; box-shadow: none; }
    .btn-outline-dark { background: transparent; border-color: var(--border); color: var(--text); }
    .btn-outline-dark:hover { border-color: var(--accent); color: var(--accent); box-shadow: none; }
    .btn-lg { padding: 16px 40px; font-size: 1.05rem; }
    .btn-sm { padding: 8px 20px; font-size: 0.85rem; }

    /* ===== Header & Nav ===== */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 1000;
        background: rgba(15,23,42,0.92);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        height: var(--nav-height);
        transition: background var(--transition);
    }
    .header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .logo {
        font-size: 1.35rem;
        font-weight: 800;
        letter-spacing: -0.5px;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .logo i { color: var(--accent); font-size: 1.2rem; }
    .logo span { color: var(--gold); }
    .nav { display: flex; align-items: center; gap: 32px; }
    .nav a {
        font-size: 0.92rem;
        font-weight: 500;
        color: rgba(255,255,255,0.75);
        transition: color var(--transition);
        position: relative;
        padding: 4px 0;
    }
    .nav a::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--accent);
        transition: width var(--transition);
        border-radius: 2px;
    }
    .nav a:hover { color: #fff; }
    .nav a:hover::after { width: 100%; }
    .nav a.active { color: #fff; }
    .nav a.active::after { width: 100%; background: var(--gold); }
    .nav-cta .btn { padding: 8px 22px; font-size: 0.88rem; }
    .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; }
    .hamburger span { display: block; width: 26px; height: 2px; background: #fff; border-radius: 2px; transition: all var(--transition); }
    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

    /* ===== Hero ===== */
    .hero {
        min-height: var(--hero-height);
        background: var(--bg-dark);
        display: flex;
        align-items: center;
        position: relative;
        overflow: hidden;
        padding-top: var(--nav-height);
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        opacity: 0.25;
        z-index: 0;
    }
    .hero-overlay {
        position: absolute;
        inset: 0;
        background: radial-gradient(ellipse at 30% 40%, rgba(59,130,246,0.15) 0%, transparent 60%),
                    radial-gradient(ellipse at 70% 60%, rgba(245,158,11,0.08) 0%, transparent 50%);
        z-index: 1;
    }
    .hero .container { position: relative; z-index: 2; display: flex; align-items: center; gap: 60px; }
    .hero-content { flex: 1.2; }
    .hero-visual { flex: 1; display: flex; justify-content: center; align-items: center; position: relative; }
    .hero-visual img { max-width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); transform: perspective(1200px) rotateY(-6deg); transition: transform 0.6s ease; }
    .hero-visual img:hover { transform: perspective(1200px) rotateY(0deg); }
    .hero-badge { display: inline-block; padding: 6px 18px; border-radius: 50px; background: rgba(59,130,246,0.15); color: var(--accent-light); font-size: 0.85rem; font-weight: 600; margin-bottom: 20px; border: 1px solid rgba(59,130,246,0.20); }
    .hero h1 { color: #fff; margin-bottom: 20px; letter-spacing: -1px; }
    .hero h1 span { background: linear-gradient(135deg, var(--accent), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .hero p { font-size: 1.15rem; color: rgba(255,255,255,0.7); max-width: 540px; margin-bottom: 32px; line-height: 1.8; }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
    .hero-stats { display: flex; gap: 40px; margin-top: 48px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.08); }
    .hero-stat h4 { font-size: 1.8rem; color: #fff; font-weight: 800; }
    .hero-stat h4 i { color: var(--gold); font-size: 1.4rem; margin-right: 6px; }
    .hero-stat p { font-size: 0.88rem; color: var(--text-muted); margin: 0; }

    /* ===== Core Values ===== */
    .values { background: var(--bg); }
    .values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
    .value-card {
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 36px 28px;
        transition: all var(--transition);
        text-align: center;
    }
    .value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
    .value-icon {
        width: 64px; height: 64px;
        background: linear-gradient(135deg, rgba(59,130,246,0.10), rgba(245,158,11,0.08));
        border-radius: 16px;
        display: flex; align-items: center; justify-content: center;
        margin: 0 auto 20px;
        font-size: 1.6rem;
        color: var(--accent);
    }
    .value-card h3 { margin-bottom: 12px; }
    .value-card p { color: var(--text-light); font-size: 0.95rem; margin: 0; }

    /* ===== Services / Categories ===== */
    .services { background: var(--bg-alt); }
    .services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .service-card {
        background: var(--bg);
        border-radius: var(--radius);
        overflow: hidden;
        border: 1px solid var(--border);
        transition: all var(--transition);
        cursor: default;
    }
    .service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
    .service-card .card-img {
        height: 180px;
        background: var(--primary-light);
        position: relative;
        overflow: hidden;
    }
    .service-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
    .service-card:hover .card-img img { transform: scale(1.06); }
    .service-card .card-img .overlay {
        position: absolute; inset: 0;
        background: linear-gradient(to top, rgba(15,23,42,0.6), transparent);
    }
    .service-card .card-body { padding: 22px 20px 26px; }
    .service-card .card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
    .service-card .card-body p { color: var(--text-light); font-size: 0.9rem; margin: 0 0 16px; }
    .service-card .card-body .tag {
        display: inline-block;
        padding: 2px 12px;
        border-radius: 50px;
        font-size: 0.75rem;
        font-weight: 600;
        background: rgba(59,130,246,0.08);
        color: var(--accent);
    }

    /* ===== Stats ===== */
    .stats-section {
        background: var(--bg-dark);
        position: relative;
        overflow: hidden;
    }
    .stats-section::before {
        content: '';
        position: absolute; inset: 0;
        background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        opacity: 0.08;
    }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 1; }
    .stat-item { text-align: center; padding: 24px 16px; }
    .stat-item .num { font-size: 2.8rem; font-weight: 800; color: #fff; line-height: 1.1; }
    .stat-item .num i { color: var(--gold); font-size: 2rem; margin-right: 6px; }
    .stat-item .label { font-size: 0.95rem; color: var(--text-muted); margin-top: 8px; }
    .stat-item .label i { margin-right: 4px; color: var(--accent); }

    /* ===== Latest Posts (CMS) ===== */
    .posts { background: var(--bg); }
    .posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .post-card {
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        transition: all var(--transition);
    }
    .post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .post-card .post-img {
        height: 190px;
        background: var(--primary-light);
        position: relative;
        overflow: hidden;
    }
    .post-card .post-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
    .post-card:hover .post-img img { transform: scale(1.05); }
    .post-card .post-cat {
        position: absolute;
        top: 14px;
        left: 14px;
        padding: 4px 14px;
        border-radius: 50px;
        font-size: 0.75rem;
        font-weight: 600;
        background: rgba(15,23,42,0.75);
        color: #fff;
        backdrop-filter: blur(4px);
    }
    .post-card .post-body { padding: 20px; }
    .post-card .post-body .post-date { font-size: 0.82rem; color: var(--text-light); margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
    .post-card .post-body h3 { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.4; }
    .post-card .post-body h3 a { color: var(--primary); }
    .post-card .post-body h3 a:hover { color: var(--accent); }
    .post-card .post-body p { font-size: 0.9rem; color: var(--text-light); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .post-card .post-body .read-more {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--accent);
        margin-top: 14px;
        transition: gap var(--transition);
    }
    .post-card .post-body .read-more:hover { gap: 8px; }
    .posts-empty { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-light); font-size: 1.05rem; background: var(--bg-alt); border-radius: var(--radius); }

    /* ===== Process ===== */
    .process { background: var(--bg-alt); }
    .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
    .process-step { text-align: center; padding: 32px 20px; background: var(--bg); border-radius: var(--radius); border: 1px solid var(--border); transition: all var(--transition); position: relative; }
    .process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .process-step .step-num {
        width: 52px; height: 52px;
        background: linear-gradient(135deg, var(--accent), var(--accent-hover));
        border-radius: 50%;
        display: flex; align-items: center; justify-content: center;
        margin: 0 auto 18px;
        font-size: 1.3rem;
        font-weight: 800;
        color: #fff;
    }
    .process-step .step-gold .step-num { background: linear-gradient(135deg, var(--gold), var(--gold-hover)); }
    .process-step h3 { font-size: 1.05rem; margin-bottom: 8px; }
    .process-step p { font-size: 0.9rem; color: var(--text-light); margin: 0; }

    /* ===== FAQ ===== */
    .faq { background: var(--bg); }
    .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
    .faq-item {
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        overflow: hidden;
        transition: all var(--transition);
        background: var(--bg);
    }
    .faq-item:hover { border-color: var(--accent); }
    .faq-question {
        padding: 18px 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        font-weight: 600;
        font-size: 1rem;
        background: none;
        width: 100%;
        text-align: left;
        color: var(--text);
        transition: background var(--transition);
    }
    .faq-question:hover { background: rgba(59,130,246,0.03); }
    .faq-question i { color: var(--accent); transition: transform var(--transition); font-size: 0.9rem; }
    .faq-question.active i { transform: rotate(180deg); }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        padding: 0 24px;
        color: var(--text-light);
        font-size: 0.95rem;
        line-height: 1.7;
    }
    .faq-answer.open { max-height: 300px; padding: 0 24px 20px; }

    /* ===== CTA ===== */
    .cta {
        background: var(--bg-dark);
        position: relative;
        overflow: hidden;
        text-align: center;
        padding: 100px 0;
    }
    .cta::before {
        content: '';
        position: absolute; inset: 0;
        background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        opacity: 0.06;
    }
    .cta .container { position: relative; z-index: 1; }
    .cta h2 { color: #fff; margin-bottom: 16px; }
    .cta p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 540px; margin: 0 auto 32px; }
    .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

    /* ===== Footer ===== */
    .footer {
        background: var(--primary);
        color: rgba(255,255,255,0.7);
        padding: 60px 0 32px;
        border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
    .footer-brand .logo { margin-bottom: 12px; }
    .footer-brand p { font-size: 0.9rem; max-width: 320px; }
    .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
    .footer-col a { display: block; font-size: 0.88rem; color: rgba(255,255,255,0.6); padding: 4px 0; transition: color var(--transition); }
    .footer-col a:hover { color: var(--accent); }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.06);
        padding-top: 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.85rem;
    }
    .footer-bottom a { color: rgba(255,255,255,0.5); }
    .footer-bottom a:hover { color: var(--accent); }
    .footer-socials { display: flex; gap: 16px; }
    .footer-socials a {
        width: 40px; height: 40px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        display: flex; align-items: center; justify-content: center;
        color: rgba(255,255,255,0.6);
        transition: all var(--transition);
    }
    .footer-socials a:hover { background: var(--accent); color: #fff; }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .hero .container { flex-direction: column; text-align: center; }
        .hero p { margin-left: auto; margin-right: auto; }
        .hero-actions { justify-content: center; }
        .hero-stats { justify-content: center; }
        .hero-visual { display: none; }
        .services-grid { grid-template-columns: repeat(2, 1fr); }
        .posts-grid { grid-template-columns: repeat(2, 1fr); }
        .process-grid { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
        :root { --nav-height: 64px; --hero-height: 86vh; }
        .nav { display: none; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; width: 100%; background: rgba(15,23,42,0.98); backdrop-filter: blur(16px); padding: 20px 24px; gap: 16px; border-bottom: 1px solid rgba(255,255,255,0.06); }
        .nav.open { display: flex; }
        .nav a { font-size: 1rem; padding: 8px 0; }
        .nav-cta { margin-top: 8px; }
        .hamburger { display: flex; }
        .values-grid { grid-template-columns: 1fr; }
        .services-grid { grid-template-columns: 1fr; }
        .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .posts-grid { grid-template-columns: 1fr; }
        .process-grid { grid-template-columns: 1fr; }
        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .hero-stats { flex-wrap: wrap; gap: 20px; }
        .hero-stat { flex: 1 1 40%; }
        .section-pad { padding: 60px 0; }
        .cta { padding: 60px 0; }
        .hero h1 { font-size: clamp(1.8rem, 8vw, 2.6rem); }
        .hero p { font-size: 1rem; }
        .stat-item .num { font-size: 2rem; }
    }
    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        .hero-actions { flex-direction: column; align-items: center; }
        .hero-actions .btn { width: 100%; justify-content: center; }
        .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
        .stat-item { padding: 16px 8px; }
        .stat-item .num { font-size: 1.6rem; }
        .hero-stats { flex-direction: column; align-items: center; }
        .hero-stat { text-align: center; }
        .cta-actions { flex-direction: column; align-items: center; }
        .cta-actions .btn { width: 100%; justify-content: center; }
        .footer-bottom { flex-direction: column; text-align: center; }
    }

/* roulang page: article */
*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --clr-primary: #0d1321;
            --clr-secondary: #1d2d44;
            --clr-accent: #c9a84c;
            --clr-accent-light: #e0c36a;
            --clr-accent-dark: #a8872e;
            --clr-bg: #080c14;
            --clr-card: rgba(255, 255, 255, 0.04);
            --clr-card-hover: rgba(255, 255, 255, 0.08);
            --clr-text: #f0ece4;
            --clr-text-muted: #a89f94;
            --clr-border: rgba(201, 168, 76, 0.2);
            --clr-overlay: rgba(8, 12, 20, 0.75);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', 'PingFang SC', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--clr-accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--clr-accent-light);
        }
        a:focus-visible {
            outline: 2px solid var(--clr-accent);
            outline-offset: 4px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 1px solid transparent;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-dark));
            color: #0d1321;
            border-color: var(--clr-accent);
            box-shadow: 0 4px 16px rgba(201, 168, 76, 0.25);
        }
        .btn-gold:hover,
        .btn-gold:focus {
            background: linear-gradient(135deg, var(--clr-accent-light), var(--clr-accent));
            color: #0d1321;
            box-shadow: 0 6px 24px rgba(201, 168, 76, 0.4);
            transform: translateY(-2px);
        }
        .btn-gold:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(201, 168, 76, 0.2);
        }
        .btn-outline {
            background: transparent;
            color: var(--clr-text);
            border-color: var(--clr-border);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            border-color: var(--clr-accent);
            color: var(--clr-accent);
            background: rgba(201, 168, 76, 0.06);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
            border-radius: 6px;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius);
        }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 12, 20, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--clr-border);
            height: var(--nav-height);
            transition: background var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--clr-text);
            display: flex;
            align-items: center;
            gap: 6px;
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--clr-accent);
            font-size: 1.4rem;
        }
        .logo span {
            color: var(--clr-accent);
            font-weight: 400;
        }
        .logo:hover {
            color: var(--clr-text);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            color: var(--clr-text-muted);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--clr-text);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav a.active {
            color: var(--clr-accent);
            background: rgba(201, 168, 76, 0.1);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--clr-accent);
            border-radius: 2px;
        }
        .nav .nav-cta {
            margin-left: 12px;
        }
        .nav-toggle {
            display: none;
            color: var(--clr-text);
            font-size: 1.4rem;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        @media (max-width: 820px) {
            .nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(8, 12, 20, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 1px solid var(--clr-border);
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.active {
                border-left: 3px solid var(--clr-accent);
            }
            .nav .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .nav .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: flex-end;
            padding-top: calc(var(--nav-height) + 40px);
            padding-bottom: 60px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .article-hero .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 12, 20, 0.3) 0%, var(--clr-overlay) 80%);
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .article-hero-content {
            max-width: 800px;
        }
        .article-category {
            display: inline-block;
            background: rgba(201, 168, 76, 0.15);
            color: var(--clr-accent);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            border: 1px solid rgba(201, 168, 76, 0.2);
            margin-bottom: 16px;
        }
        .article-hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--clr-text-muted);
            font-size: 0.9rem;
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--clr-accent);
        }
        @media (max-width: 768px) {
            .article-hero {
                min-height: 320px;
                padding-bottom: 40px;
                padding-top: calc(var(--nav-height) + 24px);
            }
            .article-hero-content h1 {
                font-size: 1.8rem;
            }
            .article-category {
                font-size: 0.8rem;
                padding: 4px 14px;
            }
            .article-meta {
                font-size: 0.8rem;
                gap: 12px;
            }
        }
        @media (max-width: 520px) {
            .article-hero-content h1 {
                font-size: 1.4rem;
            }
        }

        /* ===== Article Body ===== */
        .article-body {
            padding: 60px 0 80px;
        }
        .article-content {
            max-width: 800px;
            margin: 0 auto;
            font-size: 1.05rem;
            line-height: 1.9;
            color: #e0dbd2;
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: #fff;
            margin-top: 36px;
            margin-bottom: 16px;
            font-weight: 700;
            line-height: 1.3;
        }
        .article-content h2 {
            font-size: 1.6rem;
        }
        .article-content h3 {
            font-size: 1.25rem;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content a {
            color: var(--clr-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--clr-accent-light);
        }
        .article-content blockquote {
            border-left: 4px solid var(--clr-accent);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(201, 168, 76, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: #c9c1b4;
            font-style: italic;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 28px 0;
            box-shadow: var(--shadow);
        }
        .article-content code {
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--clr-accent-light);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .article-content th,
        .article-content td {
            padding: 12px 16px;
            border: 1px solid var(--clr-border);
            text-align: left;
        }
        .article-content th {
            background: rgba(201, 168, 76, 0.1);
            color: var(--clr-accent);
            font-weight: 600;
        }
        .article-content td {
            background: rgba(255, 255, 255, 0.02);
        }
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            max-width: 600px;
            margin: 0 auto;
        }
        .article-not-found h2 {
            font-size: 2rem;
            color: var(--clr-accent);
            margin-bottom: 16px;
        }
        .article-not-found p {
            color: var(--clr-text-muted);
            font-size: 1.1rem;
            margin-bottom: 32px;
        }
        @media (max-width: 768px) {
            .article-body {
                padding: 40px 0 60px;
            }
            .article-content {
                font-size: 0.98rem;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .article-content h3 {
                font-size: 1.1rem;
            }
            .article-not-found h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== Share / Tags ===== */
        .article-share {
            max-width: 800px;
            margin: 0 auto;
            padding: 40px 0 20px;
            border-top: 1px solid var(--clr-border);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tag {
            background: rgba(255, 255, 255, 0.05);
            color: var(--clr-text-muted);
            padding: 4px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
        }
        .article-tags .tag:hover {
            background: rgba(201, 168, 76, 0.1);
            color: var(--clr-accent);
            border-color: var(--clr-accent);
        }
        .share-buttons {
            display: flex;
            gap: 8px;
        }
        .share-buttons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--clr-text-muted);
            border: 1px solid var(--clr-border);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .share-buttons a:hover {
            background: var(--clr-accent);
            color: #0d1321;
            border-color: var(--clr-accent);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(201, 168, 76, 0.25);
        }
        @media (max-width: 600px) {
            .article-share {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ===== Related ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--clr-primary);
        }
        .related-heading {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .related-sub {
            color: var(--clr-text-muted);
            margin-bottom: 40px;
            font-size: 1rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--clr-card);
            border: 1px solid var(--clr-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            background: var(--clr-card-hover);
            border-color: rgba(201, 168, 76, 0.35);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .related-card .card-img .overlay-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(201, 168, 76, 0.85);
            color: #0d1321;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 700;
            backdrop-filter: blur(4px);
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .card-body p {
            color: var(--clr-text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .related-card .card-body .btn-link {
            color: var(--clr-accent);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .related-card .card-body .btn-link:hover {
            color: var(--clr-accent-light);
            gap: 10px;
        }
        @media (max-width: 1024px) {
            .related-grid {
                gap: 18px;
            }
        }
        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
            .related-heading {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card .card-img {
                height: 160px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0d1321 0%, #1a1a2e 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(201, 168, 76, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-content p {
            color: var(--clr-text-muted);
            font-size: 1.05rem;
            margin-bottom: 32px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 60px 0;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
            .cta-content p {
                font-size: 0.95rem;
            }
            .cta-buttons .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: #060a12;
            border-top: 1px solid var(--clr-border);
            padding: 60px 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: var(--clr-text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: var(--clr-text-muted);
            padding: 5px 0;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--clr-accent);
            padding-left: 4px;
        }
        .footer-col a i {
            margin-right: 8px;
            color: var(--clr-accent);
            width: 16px;
        }
        .footer-socials {
            display: flex;
            gap: 10px;
        }
        .footer-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--clr-border);
            color: var(--clr-text-muted);
            font-size: 1rem;
            padding: 0;
            transition: all var(--transition);
        }
        .footer-socials a:hover {
            background: var(--clr-accent);
            color: #0d1321;
            border-color: var(--clr-accent);
            transform: translateY(-3px);
            padding: 0;
        }
        .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--clr-text-muted);
        }
        .footer-bottom a {
            color: var(--clr-text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-bottom a:hover {
            color: var(--clr-accent);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .footer-brand {
                grid-column: span 2;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--clr-accent);
            color: #0d1321;
            border: none;
            font-size: 1.2rem;
            box-shadow: 0 4px 20px rgba(201, 168, 76, 0.3);
            transition: all var(--transition);
            opacity: 0;
            pointer-events: none;
            transform: translateY(20px);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .back-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }
        .back-top:hover {
            background: var(--clr-accent-light);
            transform: translateY(-4px);
            box-shadow: 0 8px 28px rgba(201, 168, 76, 0.4);
        }
        @media (max-width: 520px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }

        /* ===== Misc Utilities ===== */
        .text-accent {
            color: var(--clr-accent);
        }
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #0d1b2a;
            --clr-primary-light: #1b3a5c;
            --clr-accent: #d4a843;
            --clr-accent-light: #e8c56d;
            --clr-cta: #c0392b;
            --clr-cta-hover: #a93226;
            --clr-bg: #f0f2f5;
            --clr-bg-alt: #e8ebf0;
            --clr-card: #ffffff;
            --clr-text: #1a1a2e;
            --clr-text-secondary: #4a4a6a;
            --clr-text-light: #7a7a9a;
            --clr-border: #dce0e6;
            --clr-border-light: #eef0f4;
            --clr-success: #27ae60;
            --clr-warning: #f39c12;
            --clr-danger: #e74c3c;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(13, 27, 42, 0.06);
            --shadow-md: 0 8px 28px rgba(13, 27, 42, 0.10);
            --shadow-lg: 0 16px 48px rgba(13, 27, 42, 0.14);
            --shadow-glow: 0 0 30px rgba(212, 168, 67, 0.20);
            --transition: 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-pad: 24px;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            color: var(--clr-text);
            background: var(--clr-bg);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--clr-text);
        }
        h1 {
            font-size: clamp(2.4rem, 6vw, 4.2rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            letter-spacing: -0.015em;
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--clr-text-secondary);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }

        /* ===== Utility ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--clr-bg-alt);
        }
        .section-dark {
            background: var(--clr-primary);
            color: #fff;
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4,
        .section-dark p {
            color: #fff;
        }
        .section-dark p {
            color: rgba(255, 255, 255, 0.78);
        }
        .text-center {
            text-align: center;
        }
        .text-accent {
            color: var(--clr-accent);
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .mb-48 {
            margin-bottom: 48px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-24 {
            gap: 24px;
        }
        .gap-32 {
            gap: 32px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--clr-accent);
            color: var(--clr-primary);
            border-color: var(--clr-accent);
        }
        .btn-primary:hover {
            background: var(--clr-accent-light);
            border-color: var(--clr-accent-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-cta {
            background: var(--clr-cta);
            color: #fff;
            border-color: var(--clr-cta);
        }
        .btn-cta:hover {
            background: var(--clr-cta-hover);
            border-color: var(--clr-cta-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(192, 57, 43, 0.35);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
        }
        .btn-gold {
            background: var(--clr-accent);
            color: var(--clr-primary);
            border-color: var(--clr-accent);
        }
        .btn-gold:hover {
            background: var(--clr-accent-light);
            border-color: var(--clr-accent-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(212, 168, 67, 0.12);
            color: var(--clr-accent);
            border: 1px solid rgba(212, 168, 67, 0.25);
            margin-bottom: 16px;
        }
        .badge-white {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.25);
        }
        .badge-success {
            background: rgba(39, 174, 96, 0.12);
            color: var(--clr-success);
            border-color: rgba(39, 174, 96, 0.25);
        }

        /* ===== Header & Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(13, 27, 42, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            z-index: 1000;
            transition: var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .logo i {
            color: var(--clr-accent);
            font-size: 1.2rem;
        }
        .logo span {
            color: var(--clr-accent);
        }
        .logo:hover {
            opacity: 0.88;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
            font-size: 0.92rem;
            transition: var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav a.active {
            color: var(--clr-accent);
            background: rgba(212, 168, 67, 0.10);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--clr-accent);
        }
        .nav-cta {
            margin-left: 12px;
        }
        .nav-cta .btn {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        .nav-toggle {
            display: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        /* ===== Hero / Banner ===== */
        .banner {
            position: relative;
            padding: 140px 0 100px;
            margin-top: var(--nav-height);
            background: var(--clr-primary);
            overflow: hidden;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88) 0%, rgba(27, 58, 92, 0.72) 100%);
            z-index: 1;
        }
        .banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-content {
            max-width: 780px;
        }
        .banner h1 {
            color: #fff;
            margin-bottom: 20px;
        }
        .banner h1 .highlight {
            color: var(--clr-accent);
        }
        .banner p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.78);
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .banner-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .banner-stat-item {
            text-align: left;
        }
        .banner-stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--clr-accent);
            line-height: 1.1;
        }
        .banner-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--clr-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--clr-border-light);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--clr-border);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--clr-accent);
            background: rgba(212, 168, 67, 0.10);
            margin-bottom: 16px;
        }
        .card h3 {
            margin-bottom: 8px;
        }
        .card p {
            font-size: 0.92rem;
            margin-bottom: 0;
        }
        .card .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.72rem;
            font-weight: 600;
            background: var(--clr-bg-alt);
            color: var(--clr-text-secondary);
            margin-top: 12px;
        }

        /* ===== Grid ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--clr-accent), var(--clr-primary-light));
            border-radius: 4px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 36px;
            padding-left: 20px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--clr-accent);
            border: 3px solid var(--clr-bg);
            box-shadow: 0 0 0 3px var(--clr-accent);
        }
        .timeline-item .step {
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--clr-accent);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 4px;
        }
        .timeline-item h4 {
            margin-bottom: 4px;
        }
        .timeline-item p {
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid var(--clr-border-light);
            padding: 18px 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 0;
            user-select: none;
            color: var(--clr-text);
        }
        .faq-q i {
            font-size: 1.1rem;
            color: var(--clr-accent);
            transition: var(--transition);
        }
        .faq-q.open i {
            transform: rotate(180deg);
        }
        .faq-q:hover {
            color: var(--clr-accent);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 0;
            color: var(--clr-text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-a.open {
            max-height: 400px;
            padding: 12px 0 8px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--clr-primary);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.1rem;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        /* ===== Footer ===== */
        .footer {
            background: #0a1420;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .footer .logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .footer p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 0;
            max-width: 320px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--clr-accent);
            padding-left: 4px;
        }
        .footer-col a i {
            margin-right: 8px;
            width: 18px;
            text-align: center;
            color: var(--clr-accent);
        }
        .footer-socials {
            display: flex;
            gap: 12px;
        }
        .footer-socials a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            padding: 0;
            transition: var(--transition);
        }
        .footer-socials a:hover {
            background: var(--clr-accent);
            color: var(--clr-primary);
            padding: 0;
            transform: translateY(-2px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--clr-accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(13, 27, 42, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: var(--shadow-lg);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.active {
                background: rgba(212, 168, 67, 0.12);
                border-left: 3px solid var(--clr-accent);
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .banner {
                padding: 120px 0 70px;
                min-height: auto;
            }
            .banner h1 {
                font-size: clamp(1.8rem, 7vw, 2.6rem);
            }
            .banner p {
                font-size: 1rem;
            }
            .banner-stats {
                gap: 24px;
                margin-top: 28px;
                padding-top: 24px;
            }
            .banner-stat-item .num {
                font-size: 1.6rem;
            }
            .section {
                padding: 56px 0;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .timeline {
                padding-left: 30px;
            }
            .timeline-item::before {
                left: -24px;
                width: 14px;
                height: 14px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .banner-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .banner-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .banner-stats {
                flex-direction: column;
                gap: 16px;
            }
            .banner-stat-item {
                text-align: center;
            }
            .logo {
                font-size: 1.15rem;
            }
            .container {
                padding: 0 16px;
            }
            .card {
                padding: 20px 16px;
            }
        }

        /* ===== Keyframes ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .anim-fade-up {
            animation: fadeUp 0.7s ease forwards;
        }
        .anim-delay-1 {
            animation-delay: 0.1s;
        }
        .anim-delay-2 {
            animation-delay: 0.2s;
        }
        .anim-delay-3 {
            animation-delay: 0.3s;
        }
        .anim-delay-4 {
            animation-delay: 0.4s;
        }

        /* ===== Misc ===== */
        .img-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            background: var(--clr-card);
            transition: var(--transition);
        }
        .img-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .img-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        .img-card-body {
            padding: 16px 18px 20px;
        }
        .img-card-body h4 {
            margin-bottom: 4px;
        }
        .img-card-body p {
            font-size: 0.85rem;
            margin-bottom: 0;
            color: var(--clr-text-light);
        }
        .img-card-body .badge-sm {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 600;
            background: rgba(212, 168, 67, 0.10);
            color: var(--clr-accent);
            margin-top: 8px;
        }

        .stat-row {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: center;
        }
        .stat-item {
            text-align: center;
            padding: 24px 32px;
            background: var(--clr-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--clr-border-light);
            min-width: 140px;
            flex: 1 1 140px;
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--clr-accent);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.85rem;
            color: var(--clr-text-light);
            margin-top: 4px;
        }

        .list-check {
            padding-left: 0;
        }
        .list-check li {
            padding: 6px 0 6px 32px;
            position: relative;
            font-size: 0.95rem;
            color: var(--clr-text-secondary);
        }
        .list-check li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 6px;
            color: var(--clr-success);
            font-size: 1rem;
        }

        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }
        .tag-item {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--clr-bg-alt);
            color: var(--clr-text-secondary);
            border: 1px solid var(--clr-border-light);
            transition: var(--transition);
        }
        .tag-item:hover {
            background: var(--clr-accent);
            color: #fff;
            border-color: var(--clr-accent);
        }