/* roulang page: index */
/* ===== Design Variables ===== */
    :root {
        --primary: #0a1a3a;
        --primary-light: #132a5a;
        --primary-dark: #060f22;
        --accent: #d4a030;
        --accent-light: #e8bc4a;
        --accent-dark: #b8891a;
        --bg-light: #f4f6f8;
        --bg-white: #ffffff;
        --text-dark: #1a1a2e;
        --text-body: #2d3748;
        --text-muted: #6c757d;
        --text-light: #a0aec0;
        --border-color: #e2e8f0;
        --shadow-sm: 0 2px 8px rgba(10, 26, 58, 0.06);
        --shadow-md: 0 8px 30px rgba(10, 26, 58, 0.1);
        --shadow-lg: 0 20px 60px rgba(10, 26, 58, 0.12);
        --radius-sm: 8px;
        --radius-md: 16px;
        --radius-lg: 24px;
        --radius-xl: 32px;
        --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    }

    /* ===== Reset & Base ===== */
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    body {
        font-family: var(--font-sans);
        color: var(--text-body);
        background: var(--bg-light);
        line-height: 1.7;
        font-size: 1rem;
    }

    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover {
        color: var(--accent);
    }
    a:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
        border-radius: 4px;
    }

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

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

    button:focus-visible,
    input:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
    }

    ul,
    ol {
        list-style: none;
    }

    /* ===== Container ===== */
    .container-custom {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }

    @media (max-width: 768px) {
        .container-custom {
            padding: 0 16px;
        }
    }

    /* ===== Utility ===== */
    .section-padding {
        padding: 80px 0;
    }
    @media (max-width: 768px) {
        .section-padding {
            padding: 48px 0;
        }
    }

    .section-title {
        font-size: 2.2rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 12px;
        letter-spacing: -0.02em;
        line-height: 1.2;
    }
    .section-subtitle {
        font-size: 1.1rem;
        color: var(--text-muted);
        max-width: 680px;
        margin: 0 auto 48px;
        text-align: center;
    }
    @media (max-width: 768px) {
        .section-title {
            font-size: 1.6rem;
        }
        .section-subtitle {
            font-size: 1rem;
            margin-bottom: 32px;
        }
    }

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

    .bg-white {
        background: var(--bg-white);
    }
    .bg-light {
        background: var(--bg-light);
    }
    .bg-primary {
        background: var(--primary) !important;
    }

    .rounded-custom {
        border-radius: var(--radius-md);
    }

    /* ===== Top Bar ===== */
    .top-bar {
        background: var(--primary-dark);
        color: rgba(255, 255, 255, 0.8);
        font-size: 0.85rem;
        padding: 8px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .top-bar a {
        color: rgba(255, 255, 255, 0.8);
        transition: var(--transition);
    }
    .top-bar a:hover {
        color: var(--accent-light);
    }
    .top-bar .top-left span {
        margin-right: 20px;
    }
    .top-bar .top-left i {
        margin-right: 6px;
        color: var(--accent-light);
    }
    .top-bar .top-right a {
        margin-left: 16px;
        padding: 2px 12px;
        border-radius: 20px;
        border: 1px solid rgba(255, 255, 255, 0.15);
        font-size: 0.8rem;
        transition: var(--transition);
    }
    .top-bar .top-right a:hover {
        border-color: var(--accent);
        color: var(--accent-light);
        background: rgba(212, 160, 48, 0.1);
    }
    @media (max-width: 768px) {
        .top-bar .top-left span:not(:first-child) {
            display: none;
        }
        .top-bar .top-right a {
            font-size: 0.75rem;
            padding: 2px 8px;
        }
    }

    /* ===== Header / Nav ===== */
    .main-header {
        background: var(--bg-white);
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 1050;
        box-shadow: 0 2px 20px rgba(10, 26, 58, 0.04);
        transition: var(--transition);
    }
    .main-header .navbar-brand {
        font-size: 1.4rem;
        font-weight: 800;
        color: var(--primary);
        letter-spacing: -0.03em;
        padding: 12px 0;
        transition: var(--transition);
    }
    .main-header .navbar-brand:hover {
        color: var(--accent);
    }
    .main-header .navbar-brand .brand-icon {
        display: inline-block;
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--accent), var(--accent-dark));
        border-radius: 10px;
        text-align: center;
        line-height: 36px;
        color: #fff;
        font-size: 1.1rem;
        margin-right: 10px;
        vertical-align: middle;
    }
    .main-header .nav-link {
        font-weight: 600;
        color: var(--text-body);
        padding: 8px 18px !important;
        border-radius: 8px;
        transition: var(--transition);
        position: relative;
        font-size: 0.95rem;
    }
    .main-header .nav-link:hover,
    .main-header .nav-link.active {
        color: var(--primary);
        background: rgba(10, 26, 58, 0.04);
    }
    .main-header .nav-link.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        background: var(--accent);
        border-radius: 4px;
    }
    .main-header .nav-cta {
        background: linear-gradient(135deg, var(--accent), var(--accent-dark));
        color: #fff !important;
        padding: 8px 22px !important;
        border-radius: 30px;
        font-weight: 600;
        box-shadow: 0 4px 15px rgba(212, 160, 48, 0.3);
        transition: var(--transition);
    }
    .main-header .nav-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(212, 160, 48, 0.4);
        color: #fff !important;
        background: linear-gradient(135deg, var(--accent-light), var(--accent));
    }
    .navbar-toggler {
        border: none;
        padding: 6px 10px;
        border-radius: 8px;
        background: var(--bg-light);
        color: var(--primary);
        font-size: 1.3rem;
    }
    .navbar-toggler:focus {
        box-shadow: none;
        outline: 2px solid var(--accent);
    }
    @media (max-width: 991px) {
        .main-header .navbar-collapse {
            background: var(--bg-white);
            padding: 16px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            margin-top: 8px;
        }
        .main-header .nav-link {
            padding: 10px 16px !important;
        }
        .main-header .nav-cta {
            margin-top: 8px;
            text-align: center;
        }
    }
    @media (max-width: 480px) {
        .main-header .navbar-brand {
            font-size: 1.1rem;
        }
        .main-header .navbar-brand .brand-icon {
            width: 30px;
            height: 30px;
            line-height: 30px;
            font-size: 0.9rem;
            margin-right: 6px;
        }
    }

    /* ===== Hero ===== */
    .hero-section {
        position: relative;
        min-height: 85vh;
        display: flex;
        align-items: center;
        background: var(--primary);
        overflow: hidden;
    }
    .hero-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
        opacity: 0.25;
        z-index: 0;
    }
    .hero-section::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(10, 26, 58, 0.85) 0%, rgba(10, 26, 58, 0.4) 100%);
        z-index: 1;
    }
    .hero-section .hero-overlay {
        position: absolute;
        inset: 0;
        background: radial-gradient(ellipse at 30% 50%, rgba(212, 160, 48, 0.08) 0%, transparent 70%);
        z-index: 1;
    }
    .hero-section .container-custom {
        position: relative;
        z-index: 2;
        width: 100%;
    }
    .hero-section .hero-badge {
        display: inline-block;
        background: rgba(212, 160, 48, 0.15);
        color: var(--accent-light);
        padding: 6px 20px;
        border-radius: 30px;
        font-size: 0.85rem;
        font-weight: 600;
        letter-spacing: 0.5px;
        border: 1px solid rgba(212, 160, 48, 0.2);
        margin-bottom: 24px;
        backdrop-filter: blur(4px);
    }
    .hero-section h1 {
        font-size: 3.4rem;
        font-weight: 800;
        color: #fff;
        line-height: 1.1;
        letter-spacing: -0.03em;
        margin-bottom: 20px;
        text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
    }
    .hero-section h1 .highlight {
        color: var(--accent-light);
        position: relative;
    }
    .hero-section .hero-desc {
        font-size: 1.2rem;
        color: rgba(255, 255, 255, 0.85);
        max-width: 640px;
        line-height: 1.8;
        margin-bottom: 32px;
        text-shadow: 0 1px 8px rgba(0, 0, 0, 0.15);
    }
    .hero-section .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        align-items: center;
    }
    .hero-section .btn-primary-custom {
        background: linear-gradient(135deg, var(--accent), var(--accent-dark));
        color: #fff;
        padding: 14px 36px;
        border-radius: 40px;
        font-weight: 700;
        font-size: 1.05rem;
        border: none;
        box-shadow: 0 8px 30px rgba(212, 160, 48, 0.35);
        transition: var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 10px;
    }
    .hero-section .btn-primary-custom:hover {
        transform: translateY(-3px);
        box-shadow: 0 12px 40px rgba(212, 160, 48, 0.45);
        color: #fff;
    }
    .hero-section .btn-outline-custom {
        background: transparent;
        color: #fff;
        padding: 14px 32px;
        border-radius: 40px;
        font-weight: 600;
        font-size: 1.05rem;
        border: 2px solid rgba(255, 255, 255, 0.3);
        transition: var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 10px;
    }
    .hero-section .btn-outline-custom:hover {
        border-color: var(--accent);
        background: rgba(212, 160, 48, 0.1);
        color: var(--accent-light);
    }
    .hero-section .hero-stats {
        display: flex;
        gap: 40px;
        margin-top: 48px;
        padding-top: 32px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    .hero-section .hero-stats .stat-item {
        text-align: center;
    }
    .hero-section .hero-stats .stat-number {
        font-size: 2rem;
        font-weight: 800;
        color: var(--accent-light);
        display: block;
        line-height: 1.2;
    }
    .hero-section .hero-stats .stat-label {
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.6);
        margin-top: 4px;
    }
    @media (max-width: 991px) {
        .hero-section {
            min-height: 70vh;
        }
        .hero-section h1 {
            font-size: 2.4rem;
        }
        .hero-section .hero-desc {
            font-size: 1.05rem;
        }
        .hero-section .hero-stats {
            gap: 24px;
            flex-wrap: wrap;
        }
        .hero-section .hero-stats .stat-number {
            font-size: 1.6rem;
        }
    }
    @media (max-width: 576px) {
        .hero-section {
            min-height: 60vh;
            padding: 60px 0 40px;
        }
        .hero-section h1 {
            font-size: 1.8rem;
        }
        .hero-section .hero-desc {
            font-size: 0.95rem;
        }
        .hero-section .hero-actions {
            flex-direction: column;
            align-items: stretch;
        }
        .hero-section .btn-primary-custom,
        .hero-section .btn-outline-custom {
            justify-content: center;
            text-align: center;
        }
        .hero-section .hero-stats {
            margin-top: 32px;
            padding-top: 24px;
            gap: 16px;
            justify-content: space-between;
        }
        .hero-section .hero-stats .stat-number {
            font-size: 1.3rem;
        }
    }

    /* ===== Features / Services ===== */
    .features-section {
        background: var(--bg-white);
    }
    .feature-card {
        background: var(--bg-light);
        border-radius: var(--radius-md);
        padding: 36px 28px;
        height: 100%;
        transition: var(--transition);
        border: 1px solid transparent;
        position: relative;
        overflow: hidden;
    }
    .feature-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 4px;
        height: 0;
        background: linear-gradient(180deg, var(--accent), var(--accent-dark));
        transition: var(--transition);
        border-radius: 0 4px 4px 0;
    }
    .feature-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-md);
        border-color: var(--border-color);
        background: var(--bg-white);
    }
    .feature-card:hover::before {
        height: 100%;
    }
    .feature-card .feature-icon {
        width: 56px;
        height: 56px;
        border-radius: 16px;
        background: linear-gradient(135deg, rgba(212, 160, 48, 0.12), rgba(212, 160, 48, 0.05));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.6rem;
        color: var(--accent);
        margin-bottom: 20px;
        transition: var(--transition);
    }
    .feature-card:hover .feature-icon {
        background: linear-gradient(135deg, var(--accent), var(--accent-dark));
        color: #fff;
        transform: scale(1.05);
    }
    .feature-card h3 {
        font-size: 1.2rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 10px;
    }
    .feature-card p {
        font-size: 0.95rem;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 0;
    }
    .feature-card .feature-link {
        margin-top: 16px;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--accent);
        font-weight: 600;
        font-size: 0.9rem;
        transition: var(--transition);
    }
    .feature-card .feature-link:hover {
        gap: 12px;
        color: var(--accent-dark);
    }
    @media (max-width: 768px) {
        .feature-card {
            padding: 28px 20px;
        }
    }

    /* ===== Hot Events / Cards ===== */
    .events-section {
        background: var(--bg-light);
    }
    .event-card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        height: 100%;
        border: 1px solid var(--border-color);
    }
    .event-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-md);
    }
    .event-card .event-img {
        height: 200px;
        background: var(--primary-light);
        position: relative;
        overflow: hidden;
    }
    .event-card .event-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: var(--transition);
    }
    .event-card:hover .event-img img {
        transform: scale(1.05);
    }
    .event-card .event-img .event-tag {
        position: absolute;
        top: 12px;
        left: 12px;
        background: var(--accent);
        color: #fff;
        padding: 4px 14px;
        border-radius: 20px;
        font-size: 0.78rem;
        font-weight: 600;
        box-shadow: 0 2px 10px rgba(212, 160, 48, 0.3);
    }
    .event-card .event-body {
        padding: 22px 20px 24px;
    }
    .event-card .event-body h4 {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 8px;
        line-height: 1.4;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .event-card .event-body p {
        font-size: 0.9rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 14px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .event-card .event-body .event-meta {
        display: flex;
        align-items: center;
        gap: 16px;
        font-size: 0.82rem;
        color: var(--text-light);
    }
    .event-card .event-body .event-meta i {
        color: var(--accent);
        margin-right: 4px;
    }
    .event-card .event-body .event-btn {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: var(--accent);
        font-weight: 600;
        font-size: 0.9rem;
        margin-top: 12px;
        transition: var(--transition);
    }
    .event-card .event-body .event-btn:hover {
        gap: 12px;
        color: var(--accent-dark);
    }
    @media (max-width: 768px) {
        .event-card .event-img {
            height: 160px;
        }
        .event-card .event-body {
            padding: 18px 16px 20px;
        }
    }

    /* ===== News / CMS List ===== */
    .news-section {
        background: var(--bg-white);
    }
    .news-card {
        display: flex;
        gap: 20px;
        padding: 24px 0;
        border-bottom: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .news-card:last-child {
        border-bottom: none;
    }
    .news-card:hover {
        padding-left: 8px;
    }
    .news-card .news-thumb {
        width: 180px;
        min-height: 120px;
        border-radius: var(--radius-sm);
        overflow: hidden;
        flex-shrink: 0;
        background: var(--bg-light);
    }
    .news-card .news-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: var(--transition);
    }
    .news-card:hover .news-thumb img {
        transform: scale(1.05);
    }
    .news-card .news-content {
        flex: 1;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    .news-card .news-content .news-cat {
        display: inline-block;
        background: rgba(212, 160, 48, 0.1);
        color: var(--accent-dark);
        padding: 2px 14px;
        border-radius: 20px;
        font-size: 0.78rem;
        font-weight: 600;
        margin-bottom: 8px;
        width: fit-content;
    }
    .news-card .news-content h4 {
        font-size: 1.15rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 6px;
        line-height: 1.4;
        transition: var(--transition);
    }
    .news-card:hover .news-content h4 {
        color: var(--accent);
    }
    .news-card .news-content p {
        font-size: 0.9rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 10px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .news-card .news-content .news-meta {
        font-size: 0.82rem;
        color: var(--text-light);
        display: flex;
        align-items: center;
        gap: 16px;
    }
    .news-card .news-content .news-meta i {
        color: var(--accent);
        margin-right: 4px;
    }
    @media (max-width: 768px) {
        .news-card {
            flex-direction: column;
            gap: 12px;
            padding: 18px 0;
        }
        .news-card .news-thumb {
            width: 100%;
            height: 180px;
        }
        .news-card .news-content h4 {
            font-size: 1.05rem;
        }
    }
    @media (max-width: 480px) {
        .news-card .news-thumb {
            height: 140px;
        }
    }

    /* ===== Stats / Social Proof ===== */
    .stats-section {
        background: var(--primary);
        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;
        z-index: 0;
    }
    .stats-section .container-custom {
        position: relative;
        z-index: 1;
    }
    .stats-section .stat-block {
        text-align: center;
        padding: 24px 16px;
        border-right: 1px solid rgba(255, 255, 255, 0.08);
    }
    .stats-section .stat-block:last-child {
        border-right: none;
    }
    .stats-section .stat-block .stat-icon {
        font-size: 2rem;
        color: var(--accent-light);
        margin-bottom: 12px;
    }
    .stats-section .stat-block .stat-number {
        font-size: 2.6rem;
        font-weight: 800;
        color: #fff;
        line-height: 1.2;
        letter-spacing: -0.02em;
    }
    .stats-section .stat-block .stat-label {
        font-size: 0.95rem;
        color: rgba(255, 255, 255, 0.6);
        margin-top: 4px;
    }
    @media (max-width: 991px) {
        .stats-section .stat-block {
            border-right: none;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 12px;
        }
        .stats-section .stat-block:last-child {
            border-bottom: none;
        }
        .stats-section .stat-block .stat-number {
            font-size: 2rem;
        }
    }
    @media (max-width: 576px) {
        .stats-section .stat-block .stat-number {
            font-size: 1.6rem;
        }
        .stats-section .stat-block .stat-label {
            font-size: 0.85rem;
        }
    }

    /* ===== Advantages ===== */
    .advantages-section {
        background: var(--bg-light);
    }
    .advantage-item {
        display: flex;
        gap: 20px;
        padding: 24px 20px;
        background: var(--bg-white);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        height: 100%;
        border: 1px solid var(--border-color);
    }
    .advantage-item:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
        border-color: transparent;
    }
    .advantage-item .adv-icon {
        width: 48px;
        height: 48px;
        min-width: 48px;
        border-radius: 14px;
        background: linear-gradient(135deg, rgba(212, 160, 48, 0.12), rgba(212, 160, 48, 0.05));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
        color: var(--accent);
    }
    .advantage-item h4 {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 6px;
    }
    .advantage-item p {
        font-size: 0.88rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 0;
    }
    @media (max-width: 768px) {
        .advantage-item {
            padding: 18px 16px;
        }
    }

    /* ===== FAQ ===== */
    .faq-section {
        background: var(--bg-white);
    }
    .faq-item {
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        margin-bottom: 12px;
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover {
        border-color: var(--accent);
        box-shadow: 0 2px 12px rgba(212, 160, 48, 0.06);
    }
    .faq-item .faq-question {
        padding: 18px 24px;
        background: var(--bg-light);
        font-weight: 600;
        color: var(--primary);
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        transition: var(--transition);
        font-size: 1rem;
        border: none;
        width: 100%;
        text-align: left;
    }
    .faq-item .faq-question:hover {
        background: rgba(212, 160, 48, 0.06);
    }
    .faq-item .faq-question i {
        transition: var(--transition);
        color: var(--accent);
    }
    .faq-item .faq-question[aria-expanded="true"] i {
        transform: rotate(180deg);
    }
    .faq-item .faq-answer {
        padding: 0 24px 20px;
        color: var(--text-muted);
        line-height: 1.7;
        font-size: 0.95rem;
    }
    @media (max-width: 768px) {
        .faq-item .faq-question {
            padding: 14px 18px;
            font-size: 0.95rem;
        }
        .faq-item .faq-answer {
            padding: 0 18px 16px;
            font-size: 0.9rem;
        }
    }

    /* ===== CTA ===== */
    .cta-section {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
        opacity: 0.08;
        z-index: 0;
    }
    .cta-section::after {
        content: '';
        position: absolute;
        top: -50%;
        right: -20%;
        width: 600px;
        height: 600px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(212, 160, 48, 0.08), transparent 70%);
        z-index: 0;
    }
    .cta-section .container-custom {
        position: relative;
        z-index: 1;
    }
    .cta-section h2 {
        font-size: 2.4rem;
        font-weight: 800;
        color: #fff;
        margin-bottom: 16px;
        letter-spacing: -0.02em;
    }
    .cta-section p {
        font-size: 1.1rem;
        color: rgba(255, 255, 255, 0.75);
        max-width: 600px;
        margin: 0 auto 32px;
        line-height: 1.7;
    }
    .cta-section .btn-cta {
        background: var(--accent);
        color: var(--primary);
        padding: 16px 44px;
        border-radius: 40px;
        font-weight: 700;
        font-size: 1.1rem;
        border: none;
        transition: var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 12px;
        box-shadow: 0 8px 30px rgba(212, 160, 48, 0.3);
    }
    .cta-section .btn-cta:hover {
        background: var(--accent-light);
        transform: translateY(-3px);
        box-shadow: 0 12px 40px rgba(212, 160, 48, 0.4);
        color: var(--primary);
    }
    .cta-section .btn-cta-outline {
        background: transparent;
        color: #fff;
        padding: 16px 36px;
        border-radius: 40px;
        font-weight: 600;
        font-size: 1.05rem;
        border: 2px solid rgba(255, 255, 255, 0.3);
        transition: var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 10px;
    }
    .cta-section .btn-cta-outline:hover {
        border-color: var(--accent);
        color: var(--accent-light);
        background: rgba(212, 160, 48, 0.1);
    }
    @media (max-width: 768px) {
        .cta-section h2 {
            font-size: 1.8rem;
        }
        .cta-section p {
            font-size: 1rem;
        }
        .cta-section .btn-cta,
        .cta-section .btn-cta-outline {
            width: 100%;
            justify-content: center;
        }
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--primary-dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 60px 0 0;
    }
    .site-footer h5 {
        color: #fff;
        font-weight: 700;
        font-size: 1.1rem;
        margin-bottom: 20px;
        letter-spacing: -0.01em;
    }
    .site-footer .footer-brand {
        font-size: 1.3rem;
        font-weight: 800;
        color: #fff;
        margin-bottom: 12px;
        display: block;
    }
    .site-footer .footer-brand .brand-icon {
        display: inline-block;
        width: 32px;
        height: 32px;
        background: var(--accent);
        border-radius: 8px;
        text-align: center;
        line-height: 32px;
        color: var(--primary);
        font-size: 1rem;
        margin-right: 8px;
        font-weight: 800;
    }
    .site-footer p {
        font-size: 0.9rem;
        line-height: 1.7;
        color: rgba(255, 255, 255, 0.55);
    }
    .site-footer a {
        color: rgba(255, 255, 255, 0.6);
        transition: var(--transition);
        font-size: 0.9rem;
    }
    .site-footer a:hover {
        color: var(--accent-light);
    }
    .site-footer .footer-links li {
        margin-bottom: 8px;
    }
    .site-footer .footer-links li a {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .site-footer .footer-links li a::before {
        content: '›';
        color: var(--accent);
        font-weight: 700;
        font-size: 1.1rem;
    }
    .site-footer .footer-social a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.06);
        color: rgba(255, 255, 255, 0.6);
        margin-right: 8px;
        margin-bottom: 8px;
        transition: var(--transition);
        font-size: 1rem;
    }
    .site-footer .footer-social a:hover {
        background: var(--accent);
        color: var(--primary);
        transform: translateY(-2px);
    }
    .site-footer .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding: 20px 0;
        margin-top: 40px;
        text-align: center;
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.4);
    }
    .site-footer .footer-bottom a {
        color: rgba(255, 255, 255, 0.5);
    }
    .site-footer .footer-bottom a:hover {
        color: var(--accent-light);
    }
    @media (max-width: 768px) {
        .site-footer {
            padding: 40px 0 0;
        }
        .site-footer h5 {
            margin-bottom: 14px;
            font-size: 1rem;
        }
        .site-footer .footer-bottom {
            margin-top: 24px;
            padding: 16px 0;
        }
    }

    /* ===== Empty State ===== */
    .empty-state {
        text-align: center;
        padding: 40px 20px;
        color: var(--text-muted);
        background: var(--bg-light);
        border-radius: var(--radius-md);
        border: 2px dashed var(--border-color);
    }
    .empty-state i {
        font-size: 2.4rem;
        color: var(--text-light);
        margin-bottom: 16px;
        display: block;
    }
    .empty-state p {
        font-size: 1rem;
        font-weight: 500;
    }

    /* ===== Scroll to Top ===== */
    .scroll-top {
        position: fixed;
        bottom: 30px;
        right: 30px;
        width: 48px;
        height: 48px;
        border-radius: 50%;
        background: var(--accent);
        color: var(--primary);
        border: none;
        font-size: 1.2rem;
        cursor: pointer;
        box-shadow: var(--shadow-md);
        transition: var(--transition);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transform: translateY(20px);
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .scroll-top.show {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .scroll-top:hover {
        background: var(--accent-light);
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }
    @media (max-width: 576px) {
        .scroll-top {
            bottom: 20px;
            right: 20px;
            width: 40px;
            height: 40px;
            font-size: 1rem;
        }
    }

    /* ===== Responsive Enhancements ===== */
    @media (max-width: 992px) {
        .hero-section h1 {
            font-size: 2.6rem;
        }
    }
    @media (max-width: 576px) {
        .hero-section h1 {
            font-size: 1.8rem;
        }
        .section-title {
            font-size: 1.5rem;
        }
    }

    /* ===== Bootstrap Overrides ===== */
    .btn:focus-visible {
        box-shadow: none;
        outline: 2px solid var(--accent);
        outline-offset: 2px;
    }
    .form-control:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(212, 160, 48, 0.15);
    }
    .accordion-button:not(.collapsed) {
        background: rgba(212, 160, 48, 0.08);
        color: var(--primary);
    }
    .accordion-button:focus {
        box-shadow: none;
        border-color: var(--accent);
    }

    /* ===== Animation ===== */
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    .animate-in {
        animation: fadeInUp 0.6s ease forwards;
    }
    .animate-delay-1 {
        animation-delay: 0.1s;
    }
    .animate-delay-2 {
        animation-delay: 0.2s;
    }
    .animate-delay-3 {
        animation-delay: 0.3s;
    }
    .animate-delay-4 {
        animation-delay: 0.4s;
    }

/* roulang page: category1 */
:root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a4a;
            --secondary: #e63946;
            --secondary-light: #ff6b6b;
            --accent: #f4a261;
            --accent-light: #ffd166;
            --bg-light: #f8f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a3a;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border-color: #e8ecf4;
            --border-radius: 16px;
            --border-radius-sm: 10px;
            --border-radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 20px 60px rgba(26, 42, 108, 0.15);
            --shadow-hover: 0 12px 40px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ---------- Header & Nav ---------- */
        .main-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
        }

        .main-header .navbar {
            padding: 12px 0;
        }

        .navbar-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary) !important;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.3px;
        }
        .navbar-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
        }

        .nav-link {
            font-weight: 500;
            color: var(--text-secondary) !important;
            padding: 8px 16px !important;
            border-radius: 10px;
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--primary) !important;
            background: rgba(26, 42, 108, 0.06);
        }
        .nav-link.active {
            color: var(--secondary) !important;
            background: rgba(230, 57, 70, 0.08);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--secondary);
            border-radius: 3px;
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light)) !important;
            color: #fff !important;
            border-radius: 30px !important;
            padding: 10px 24px !important;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
            transition: var(--transition);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230, 57, 70, 0.35);
            color: #fff !important;
            background: linear-gradient(135deg, var(--secondary-light), var(--secondary)) !important;
        }

        .navbar-toggler {
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 4px 8px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* ---------- Hero ---------- */
        .category-hero {
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-white), transparent);
            pointer-events: none;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            padding: 6px 20px;
            border-radius: 30px;
            color: var(--accent-light);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 1px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            margin-bottom: 20px;
        }
        .category-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 span {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .category-hero .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .category-hero .btn-primary-custom {
            background: var(--secondary);
            color: #fff;
            border: none;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .category-hero .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(230, 57, 70, 0.4);
            background: #c1121f;
            color: #fff;
        }
        .category-hero .btn-outline-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .category-hero .btn-outline-custom:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(244, 162, 97, 0.1);
            transform: translateY(-3px);
        }

        /* ---------- Section ---------- */
        .section-block {
            padding: 80px 0;
        }
        .section-block.bg-alt {
            background: var(--bg-light);
        }
        .section-block .section-label {
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            color: var(--secondary);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-block .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .section-block .section-sub {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 680px;
            margin: 0 auto 48px;
            text-align: center;
        }

        /* ---------- Cards ---------- */
        .service-card {
            background: var(--bg-white);
            border-radius: var(--border-radius);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-card .card-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }
        .service-card .card-icon.icon-secondary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
        }
        .service-card .card-icon.icon-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
        }
        .service-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .service-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .service-card .card-tag {
            display: inline-block;
            background: rgba(26, 42, 108, 0.06);
            color: var(--primary-light);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* ---------- Process ---------- */
        .process-step {
            text-align: center;
            padding: 24px 16px;
            position: relative;
        }
        .process-step .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.2);
        }
        .process-step h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .process-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent);
            opacity: 0.4;
        }
        @media (max-width: 767px) {
            .process-arrow {
                transform: rotate(90deg);
                padding: 8px 0;
            }
        }

        /* ---------- Stats ---------- */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-white);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            font-weight: 500;
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ---------- Cover Card ---------- */
        .cover-card {
            border-radius: var(--border-radius);
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .cover-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .cover-card .cover-img {
            height: 200px;
            background: var(--bg-light);
            overflow: hidden;
        }
        .cover-card .cover-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .cover-card:hover .cover-img img {
            transform: scale(1.05);
        }
        .cover-card .cover-body {
            padding: 20px 24px 24px;
        }
        .cover-card .cover-body .cover-badge {
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            color: var(--secondary);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .cover-card .cover-body h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .cover-card .cover-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .cover-card .cover-body .cover-link {
            font-weight: 600;
            color: var(--secondary);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .cover-card .cover-body .cover-link:hover {
            gap: 12px;
        }

        /* ---------- FAQ ---------- */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            color: var(--primary);
            background: var(--bg-white);
            padding: 18px 24px;
            font-size: 1rem;
            border: none;
            box-shadow: none !important;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--secondary);
            background: rgba(230, 57, 70, 0.03);
        }
        .faq-accordion .accordion-button::after {
            background-size: 16px;
            opacity: 0.5;
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ---------- CTA ---------- */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
            padding: 80px 0;
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-block .btn-cta {
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            padding: 16px 48px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 8px 32px rgba(244, 162, 97, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }
        .cta-block .btn-cta:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 48px rgba(244, 162, 97, 0.4);
            background: var(--accent-light);
            color: var(--primary-dark);
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
        }
        .site-footer p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }
        .site-footer h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .site-footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 2.6rem;
            }
            .section-block .section-title {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 80px 0 60px;
                min-height: auto;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .category-hero .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .section-block {
                padding: 60px 0;
            }
            .section-block .section-title {
                font-size: 1.5rem;
            }
            .service-card {
                padding: 28px 20px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .cta-block h2 {
                font-size: 1.8rem;
            }
            .cta-block .btn-cta {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 1.1rem;
            }
            .navbar-brand .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .section-block .section-title {
                font-size: 1.3rem;
            }
            .container-custom {
                padding: 0 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .cover-card .cover-img {
                height: 160px;
            }
            .site-footer .footer-brand {
                font-size: 1.1rem;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0d1b2a;
            --secondary: #e85d3a;
            --secondary-hover: #d04e2e;
            --accent: #f4a261;
            --accent-light: #f8c99a;
            --bg: #f0f4f8;
            --bg-card: #ffffff;
            --bg-dark: #0d1b2a;
            --text: #1a1a2e;
            --text-light: #6c7a8d;
            --text-white: rgba(255, 255, 255, 0.92);
            --border: #dee4ed;
            --border-light: #eef2f7;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow: 0 6px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-base: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

        /* ===== 基础重置 ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-base);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== 排版 ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary-dark);
            margin-bottom: 0.5em;
        }
        h1 {
            font-size: 2.4rem;
        }
        h2 {
            font-size: 1.9rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
            margin-bottom: 0.5rem;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            color: var(--text-light);
            max-width: 680px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-spacing {
            padding: 5rem 0;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .section-spacing {
                padding: 3rem 0;
            }
            .section-title {
                margin-bottom: 2rem;
            }
        }

        /* ===== 导航 ===== */
        .main-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.95);
        }
        .main-header .navbar {
            padding: 0.6rem 0;
        }
        .main-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--primary);
            letter-spacing: 0.5px;
            transition: var(--transition);
        }
        .main-header .navbar-brand:hover {
            color: var(--secondary);
        }
        .main-header .brand-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .main-header .nav-link {
            font-weight: 500;
            color: var(--text);
            padding: 0.5rem 1rem !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .main-header .nav-link:hover,
        .main-header .nav-link:focus {
            color: var(--secondary);
            background: rgba(232, 93, 58, 0.06);
        }
        .main-header .nav-link.active {
            color: var(--secondary);
            background: rgba(232, 93, 58, 0.1);
        }
        .main-header .nav-cta {
            background: var(--secondary);
            color: #fff !important;
            padding: 0.55rem 1.4rem !important;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .main-header .nav-cta:hover {
            background: var(--secondary-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(232, 93, 58, 0.35);
        }
        .navbar-toggler {
            border: none;
            background: transparent;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 4px 8px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }
        @media (max-width: 991px) {
            .main-header .navbar-collapse {
                background: var(--bg-card);
                padding: 1rem;
                border-radius: var(--radius);
                box-shadow: var(--shadow);
                margin-top: 0.5rem;
            }
            .main-header .nav-link {
                padding: 0.6rem 1rem !important;
            }
            .main-header .nav-cta {
                margin-top: 0.5rem;
                justify-content: center;
            }
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 5rem 0 3.5rem;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88) 40%, rgba(26, 58, 92, 0.72) 100%);
            z-index: 1;
        }
        .article-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .article-hero .article-category {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 0.25rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
        }
        .article-hero h1 {
            color: #fff;
            font-size: 2.6rem;
            font-weight: 800;
            max-width: 860px;
            line-height: 1.25;
            margin-bottom: 1rem;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            margin-top: 0.5rem;
        }
        .article-hero .article-meta i {
            margin-right: 6px;
            color: var(--accent);
        }
        .article-hero .article-meta span {
            display: flex;
            align-items: center;
        }
        @media (max-width: 768px) {
            .article-hero {
                padding: 3rem 0 2.5rem;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-hero .article-meta {
                gap: 0.8rem 1.2rem;
                font-size: 0.85rem;
            }
        }

        /* ===== 文章正文 ===== */
        .article-content-section {
            padding: 3rem 0 4rem;
        }
        .article-content-wrapper {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 2.5rem 3rem;
            margin-top: -2rem;
            position: relative;
            z-index: 3;
        }
        .article-content-wrapper .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-content-wrapper .article-body p {
            margin-bottom: 1.4rem;
        }
        .article-content-wrapper .article-body img {
            border-radius: var(--radius);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content-wrapper .article-body h2,
        .article-content-wrapper .article-body h3 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: var(--primary);
        }
        .article-content-wrapper .article-body ul,
        .article-content-wrapper .article-body ol {
            margin-bottom: 1.4rem;
        }
        .article-content-wrapper .article-body blockquote {
            border-left: 4px solid var(--secondary);
            padding: 0.8rem 1.5rem;
            margin: 1.5rem 0;
            background: rgba(232, 93, 58, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-content-wrapper .article-body a {
            color: var(--secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content-wrapper .article-body a:hover {
            color: var(--secondary-hover);
        }
        .article-content-wrapper .article-tags {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            align-items: center;
        }
        .article-content-wrapper .article-tags .tag {
            display: inline-block;
            background: var(--bg);
            color: var(--text-light);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .article-content-wrapper .article-tags .tag:hover {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .article-content-wrapper .share-buttons {
            display: flex;
            gap: 0.6rem;
            margin-left: auto;
        }
        .article-content-wrapper .share-buttons a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text-light);
            transition: var(--transition);
            border: 1px solid var(--border);
            font-size: 0.95rem;
        }
        .article-content-wrapper .share-buttons a:hover {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
            transform: translateY(-2px);
        }
        .article-not-found {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }
        .article-not-found i {
            font-size: 3.5rem;
            color: var(--text-light);
            margin-bottom: 1.5rem;
            opacity: 0.5;
        }
        .article-not-found h3 {
            color: var(--text);
            margin-bottom: 0.8rem;
        }
        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 1.5rem;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
            color: #fff;
        }
        @media (max-width: 768px) {
            .article-content-wrapper {
                padding: 1.5rem 1.2rem;
                margin-top: -1rem;
            }
            .article-content-wrapper .article-body {
                font-size: 0.98rem;
            }
            .article-content-wrapper .article-tags {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-content-wrapper .share-buttons {
                margin-left: 0;
                margin-top: 0.8rem;
            }
        }

        /* ===== 推荐文章卡片 ===== */
        .related-section {
            background: var(--bg);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-light);
        }
        .related-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
            border-radius: 0;
        }
        .related-card:hover .card-img img {
            transform: scale(1.06);
        }
        .related-card .card-img .card-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--secondary);
            color: #fff;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            z-index: 2;
        }
        .related-card .card-body {
            padding: 1.3rem 1.4rem 1.5rem;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
            color: var(--primary-dark);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0.8rem;
        }
        .related-card .card-body .card-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .related-card .card-body .card-meta i {
            color: var(--accent);
            margin-right: 4px;
        }
        @media (max-width: 992px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card .card-img {
                height: 180px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.1rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary-dark);
            background: transparent;
            transition: var(--transition);
            border: none;
            width: 100%;
            text-align: left;
            gap: 1rem;
        }
        .faq-question:hover {
            color: var(--secondary);
        }
        .faq-question i {
            color: var(--secondary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.9) 30%, rgba(26, 58, 92, 0.8) 100%);
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 800;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 1.8rem;
            font-size: 1.05rem;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--secondary);
            color: #fff;
            padding: 0.9rem 2.4rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            border: none;
            box-shadow: 0 4px 20px rgba(232, 93, 58, 0.4);
        }
        .cta-section .btn-cta:hover {
            background: var(--secondary-hover);
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(232, 93, 58, 0.5);
            color: #fff;
        }
        .cta-section .btn-outline-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            padding: 0.85rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid rgba(255, 255, 255, 0.4);
            margin-left: 1rem;
        }
        .cta-section .btn-outline-cta:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateY(-3px);
        }
        @media (max-width: 576px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .btn-cta,
            .cta-section .btn-outline-cta {
                display: flex;
                margin: 0.5rem auto;
                justify-content: center;
                width: 100%;
                max-width: 280px;
            }
            .cta-section .btn-outline-cta {
                margin-left: auto;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.6);
            padding: 3.5rem 0 2rem;
            border-top: 3px solid var(--secondary);
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: 0.8rem;
            transition: var(--transition);
        }
        .site-footer .footer-brand:hover {
            color: var(--accent);
        }
        .site-footer .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1rem;
        }
        .site-footer p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 0.6rem;
        }
        .site-footer .footer-social a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            font-size: 1rem;
        }
        .site-footer .footer-social a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-3px);
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 0.6rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .site-footer .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .site-footer {
                padding: 2.5rem 0 1.5rem;
            }
            .site-footer .footer-social {
                margin-bottom: 1.5rem;
            }
            .site-footer h5 {
                margin-top: 1rem;
            }
        }

        /* ===== 通用按钮 ===== */
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            padding: 0.7rem 1.8rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
            color: #fff;
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            padding: 0.65rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
            border: 2px solid var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 通用卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            overflow: hidden;
        }
        .card-custom:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }

        /* ===== 徽章 ===== */
        .badge-custom {
            display: inline-block;
            padding: 0.25rem 0.9rem;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--bg);
            color: var(--text-light);
            border: 1px solid var(--border);
        }
        .badge-custom.badge-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .badge-custom.badge-secondary {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--secondary);
        }
        .text-muted-light {
            color: var(--text-light);
        }
        .bg-soft {
            background: var(--bg);
        }
        .bg-white-card {
            background: var(--bg-card);
        }
        .rounded-custom {
            border-radius: var(--radius);
        }
        .shadow-custom {
            box-shadow: var(--shadow);
        }
        .mb-section {
            margin-bottom: 4rem;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 576px) {
            .article-content-wrapper .article-body {
                font-size: 0.95rem;
                line-height: 1.75;
            }
            .related-card .card-body h4 {
                font-size: 0.95rem;
            }
            .faq-question {
                font-size: 0.92rem;
                padding: 0.9rem 1.2rem;
            }
            .faq-answer {
                padding: 0 1.2rem 1rem;
                font-size: 0.88rem;
            }
        }