/* roulang page: index */
:root {
            --color-primary: #0f4c81;
            --color-primary-dark: #0a3560;
            --color-primary-light: #1a6db5;
            --color-accent: #d4943a;
            --color-accent-hover: #b87a2e;
            --color-bg: #ffffff;
            --color-bg-alt: #f5f7fa;
            --color-bg-dark: #0d1b2a;
            --color-bg-dark-card: #132438;
            --color-text: #1a1a1a;
            --color-text-light: #5a6470;
            --color-text-muted: #8b95a3;
            --color-text-on-dark: #e8ecf1;
            --color-text-on-dark-muted: #a8b5c4;
            --color-border: #e2e7ed;
            --color-border-light: #eef1f5;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --color-warning: #f59e0b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
            --shadow-card-hover: 0 10px 36px rgba(0, 0, 0, 0.14);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width: 1200px;
            --navbar-height: 64px;
            --topbar-height: 34px;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            padding-top: calc(var(--topbar-height) + var(--navbar-height));
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--color-primary-light);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

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

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }
        button:focus-visible {
            outline: 2px solid var(--color-primary-light);
            outline-offset: 2px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-top: 0;
        }

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

        .section {
            padding: 72px 0;
        }
        .section--alt {
            background-color: var(--color-bg-alt);
        }
        .section--dark {
            background-color: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section--dark h2,
        .section--dark h3 {
            color: #ffffff;
        }
        .section__header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section__title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section__subtitle {
            font-size: 1.05rem;
            color: var(--color-text-light);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section--dark .section__subtitle {
            color: var(--color-text-on-dark-muted);
        }

        /* ========== TOP BAR ========== */
        .top-bar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--topbar-height);
            background-color: #0a1628;
            color: #c0ccda;
            font-size: 0.8rem;
            display: flex;
            align-items: center;
            padding: 0;
        }
        .top-bar__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px 20px;
        }
        .top-bar__left {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .top-bar__badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background-color: rgba(212, 148, 58, 0.2);
            color: #f0c878;
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 500;
            letter-spacing: 0.03em;
        }
        .top-bar__badge i {
            font-size: 0.6rem;
        }
        .top-bar__right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }
        .top-bar__link {
            color: #bcc8d6;
            font-size: 0.78rem;
            transition: color var(--transition-fast);
        }
        .top-bar__link:hover {
            color: #ffffff;
        }
        .top-bar__dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: #10b981;
            display: inline-block;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* ========== NAVBAR ========== */
        .navbar-main {
            position: fixed;
            top: var(--topbar-height);
            left: 0;
            right: 0;
            z-index: 1040;
            height: var(--navbar-height);
            background-color: #ffffff;
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }
        .navbar-main.scrolled {
            box-shadow: var(--shadow-md);
        }
        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .navbar-brand {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary) !important;
            letter-spacing: 0.04em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .navbar-nav-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .navbar-nav-custom .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .navbar-nav-custom .nav-link:hover {
            background-color: #f0f4f8;
            color: var(--color-primary);
        }
        .navbar-nav-custom .nav-link.active {
            background-color: #e8f0f8;
            color: var(--color-primary);
            font-weight: 600;
        }
        .navbar-nav-custom .nav-link.nav-cta {
            background-color: var(--color-accent);
            color: #ffffff;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: 24px;
            margin-left: 8px;
        }
        .navbar-nav-custom .nav-link.nav-cta:hover {
            background-color: var(--color-accent-hover);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(212, 148, 58, 0.35);
        }
        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            background: transparent;
            font-size: 1.3rem;
            color: var(--color-text);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--color-primary-light);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 80px 0 90px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 540px;
            display: flex;
            align-items: center;
            color: #ffffff;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 22, 40, 0.88) 0%, rgba(15, 50, 90, 0.72) 60%, rgba(10, 35, 65, 0.8) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero__content {
            max-width: 700px;
        }
        .hero__badge {
            display: inline-block;
            background-color: rgba(212, 148, 58, 0.25);
            color: #f5d78c;
            padding: 6px 16px;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            border: 1px solid rgba(212, 148, 58, 0.35);
        }
        .hero__title {
            font-size: 2.8rem;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .hero__title span {
            color: #f0c878;
        }
        .hero__desc {
            font-size: 1.1rem;
            color: #c8d6e5;
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero__actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            background-color: var(--color-accent);
            color: #ffffff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 28px;
            border: none;
            transition: all var(--transition-base);
            letter-spacing: 0.03em;
        }
        .btn-hero-primary:hover {
            background-color: #e0a040;
            color: #ffffff;
            box-shadow: 0 6px 22px rgba(212, 148, 58, 0.4);
            transform: translateY(-2px);
        }
        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            background-color: transparent;
            color: #ffffff;
            font-weight: 500;
            font-size: 1rem;
            border-radius: 28px;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-base);
            letter-spacing: 0.03em;
        }
        .btn-hero-outline:hover {
            border-color: #ffffff;
            background-color: rgba(255, 255, 255, 0.08);
            color: #ffffff;
        }

        /* ========== STATS BLOCK ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background-color: var(--color-bg-dark-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            border-color: rgba(212, 148, 58, 0.35);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
            transform: translateY(-4px);
        }
        .stat-card__number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #f0c878;
            letter-spacing: 0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-card__label {
            font-size: 0.9rem;
            color: var(--color-text-on-dark-muted);
            letter-spacing: 0.03em;
        }
        .stat-card__icon {
            font-size: 1.6rem;
            color: rgba(212, 148, 58, 0.7);
            margin-bottom: 10px;
        }

        /* ========== SERVICE CARDS ========== */
        .service-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
            border-color: #d0dae5;
        }
        .service-card__image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .service-card__body {
            padding: 22px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card__tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-primary);
            background-color: #e8f0f8;
            padding: 4px 12px;
            border-radius: 16px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
            align-self: flex-start;
        }
        .service-card__title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .service-card__desc {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .service-card__link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            transition: gap var(--transition-fast);
        }
        .service-card__link:hover {
            gap: 10px;
            color: var(--color-primary-light);
        }
        .service-card__link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }
        .service-card__link:hover i {
            transform: translateX(3px);
        }

        /* ========== NEWS LIST ========== */
        .news-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-list__item {
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: background var(--transition-fast);
        }
        .news-list__item:hover {
            background-color: #fafbfc;
            margin: 0 -12px;
            padding-left: 12px;
            padding-right: 12px;
            border-radius: var(--radius-sm);
        }
        .news-list__date {
            flex-shrink: 0;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            min-width: 90px;
            padding-top: 2px;
            letter-spacing: 0.02em;
        }
        .news-list__content {
            flex: 1;
            min-width: 0;
        }
        .news-list__title {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            line-height: 1.4;
            display: block;
        }
        .news-list__title:hover {
            color: var(--color-primary);
        }
        .news-list__excerpt {
            font-size: 0.84rem;
            color: var(--color-text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-list__empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
        }

        /* ========== ADVANTAGE BLOCK ========== */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .advantage-item {
            display: flex;
            gap: 16px;
            padding: 20px;
            border-radius: var(--radius-md);
            background: #ffffff;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .advantage-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #d5dde5;
        }
        .advantage-item__icon {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #e8f0f8, #d5e4f2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 1.3rem;
        }
        .advantage-item__text h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .advantage-item__text p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== STEPS ========== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 20px 14px;
        }
        .step-card__circle {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #ffffff;
            font-size: 1.4rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 6px 20px rgba(15, 76, 129, 0.3);
        }
        .step-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 0.84rem;
            color: var(--color-text-light);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== TRUST BLOCK ========== */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .trust-item {
            text-align: center;
            padding: 18px 10px;
        }
        .trust-item__icon {
            font-size: 2.2rem;
            color: var(--color-accent);
            margin-bottom: 10px;
        }
        .trust-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .trust-item p {
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-wrapper .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            background: #ffffff;
        }
        .faq-wrapper .accordion-button {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-text);
            padding: 18px 20px;
            background: #ffffff;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
        }
        .faq-wrapper .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background-color: #f8fafc;
            box-shadow: none;
        }
        .faq-wrapper .accordion-button:focus {
            box-shadow: none;
            border-color: var(--color-primary-light);
            outline: 2px solid rgba(15, 76, 129, 0.2);
            outline-offset: -2px;
        }
        .faq-wrapper .accordion-body {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
            padding: 0 20px 20px;
        }

        /* ========== CTA ========== */
        .cta-block {
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            text-align: center;
            color: #ffffff;
        }
        .cta-block h2 {
            color: #ffffff;
            font-size: 1.8rem;
            margin-bottom: 12px;
        }
        .cta-block p {
            color: #c8d6e5;
            font-size: 1rem;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background-color: var(--color-accent);
            color: #ffffff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 28px;
            border: none;
            transition: all var(--transition-base);
            letter-spacing: 0.03em;
        }
        .btn-cta:hover {
            background-color: #e0a040;
            color: #ffffff;
            box-shadow: 0 6px 22px rgba(212, 148, 58, 0.4);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background-color: #0a1628;
            color: #a8b5c4;
            padding: 48px 0 28px;
            font-size: 0.88rem;
        }
        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
            display: block;
        }
        .site-footer a {
            color: #bcc8d6;
        }
        .site-footer a:hover {
            color: #ffffff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
        }
        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 0.84rem;
            transition: color var(--transition-fast);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 36px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.78rem;
            color: #7a8898;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .advantage-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero__title {
                font-size: 2.2rem;
            }
            .hero {
                padding: 60px 0 64px;
                min-height: 440px;
            }
            .section {
                padding: 52px 0;
            }
        }

        @media (max-width: 768px) {
            :root {
                --topbar-height: 30px;
                --navbar-height: 56px;
            }
            body {
                padding-top: calc(var(--topbar-height) + var(--navbar-height));
            }
            .top-bar {
                font-size: 0.7rem;
            }
            .top-bar__right {
                display: none;
            }
            .top-bar__badge {
                font-size: 0.68rem;
                padding: 2px 8px;
            }
            .navbar-brand {
                font-size: 1.05rem;
            }
            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.75rem;
            }
            .navbar-nav-custom {
                flex-direction: column;
                gap: 2px;
                padding: 12px 0;
                background: #fff;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                box-shadow: var(--shadow-lg);
                position: absolute;
                top: var(--navbar-height);
                left: 0;
                right: 0;
                display: none;
            }
            .navbar-nav-custom.show {
                display: flex;
            }
            .navbar-nav-custom .nav-link {
                padding: 10px 20px;
                border-radius: 0;
                width: 100%;
            }
            .navbar-nav-custom .nav-link.nav-cta {
                margin: 6px 16px;
                text-align: center;
                justify-content: center;
                border-radius: 24px;
            }
            .hero__title {
                font-size: 1.7rem;
            }
            .hero__desc {
                font-size: 0.95rem;
            }
            .hero {
                padding: 44px 0 48px;
                min-height: 380px;
            }
            .section {
                padding: 40px 0;
            }
            .section__title {
                font-size: 1.5rem;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-card__number {
                font-size: 2rem;
            }
            .service-cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .advantage-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .steps-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .trust-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-block {
                padding: 32px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-block h2 {
                font-size: 1.4rem;
            }
            .news-list__date {
                min-width: 70px;
                font-size: 0.74rem;
            }
            .news-list__title {
                font-size: 0.9rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .hero__title {
                font-size: 1.4rem;
            }
            .hero__desc {
                font-size: 0.85rem;
            }
            .hero__actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero__actions .btn-hero-primary,
            .hero__actions .btn-hero-outline {
                width: 100%;
                justify-content: center;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-card__number {
                font-size: 1.6rem;
            }
            .stat-card__label {
                font-size: 0.76rem;
            }
            .steps-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .trust-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section__title {
                font-size: 1.3rem;
            }
            .news-list__item {
                flex-direction: column;
                gap: 4px;
            }
            .news-list__date {
                min-width: auto;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0f2440;
            --color-primary-light: #1a3d64;
            --color-accent: #d4940b;
            --color-accent-light: #f0b429;
            --color-accent-glow: #fce4a8;
            --color-bg: #f8f9fb;
            --color-surface: #ffffff;
            --color-text: #1a1a2e;
            --color-text-weak: #5e6f82;
            --color-text-muted: #8896a7;
            --color-border: #e2e7ee;
            --color-border-light: #eef1f5;
            --color-dark-block: #0b1a2f;
            --color-dark-block-alt: #0f2440;
            --color-success: #10b981;
            --color-info: #3b82f6;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 32px rgba(212, 148, 11, 0.18);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            font-family: var(--font-body);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        /* ========== TOP INFO BAR ========== */
        .top-info-bar {
            background: var(--color-dark-block);
            color: #c5cdd8;
            font-size: 0.8rem;
            padding: 6px 0;
            letter-spacing: 0.02em;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .top-info-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 20px;
        }
        .top-info-bar a {
            color: var(--color-accent-light);
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .top-info-bar a:hover {
            color: #fff;
        }
        .top-info-bar .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-success);
            margin-right: 6px;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
            }
        }

        /* ========== MAIN NAV ========== */
        .navbar-main {
            background: var(--color-surface);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid var(--color-border-light);
            padding: 0;
        }
        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-primary) !important;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .navbar-brand .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
            color: #fff;
            font-size: 1rem;
        }
        .navbar-toggler {
            border: none;
            background: transparent;
            font-size: 1.4rem;
            color: var(--color-primary);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .navbar-toggler:hover {
            background: var(--color-border-light);
        }
        .navbar-nav-custom {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .navbar-nav-custom li {
            margin: 0;
        }
        .navbar-nav-custom .nav-link {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 24px;
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--color-text-weak);
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .navbar-nav-custom .nav-link:hover {
            color: var(--color-primary);
            background: var(--color-border-light);
        }
        .navbar-nav-custom .nav-link.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(15, 36, 64, 0.3);
        }
        .navbar-nav-custom .nav-cta {
            background: var(--color-accent);
            color: #fff !important;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 24px;
            box-shadow: 0 3px 14px rgba(212, 148, 11, 0.35);
            transition: all var(--transition-smooth);
        }
        .navbar-nav-custom .nav-cta:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 22px rgba(212, 148, 11, 0.5);
            transform: translateY(-1px);
            color: #fff !important;
        }

        /* Mobile nav */
        @media (max-width: 767.98px) {
            .navbar-nav-custom {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--color-surface);
                border-bottom: 2px solid var(--color-border);
                padding: 16px 20px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                z-index: 1040;
            }
            .navbar-nav-custom.show-mobile {
                display: flex;
            }
            .navbar-nav-custom .nav-link {
                display: block;
                width: 100%;
                text-align: center;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .navbar-nav-custom .nav-cta {
                margin-top: 4px;
            }
        }

        /* ========== PAGE HERO ========== */
        .page-hero {
            position: relative;
            background: var(--color-dark-block);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 80px 0 70px;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 26, 47, 0.88) 0%, rgba(15, 36, 64, 0.78) 40%, rgba(11, 26, 47, 0.9) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: var(--color-accent-light);
            padding: 6px 18px;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 20px;
        }
        .page-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 0.01em;
            margin-bottom: 16px;
            line-height: 1.25;
            color: #fff;
        }
        .page-hero h1 .highlight {
            color: var(--color-accent-light);
        }
        .page-hero .hero-subtitle {
            font-size: 1.15rem;
            color: #cdd6e0;
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .page-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 30px;
            border-radius: 28px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 6px 24px rgba(212, 148, 11, 0.45);
            text-decoration: none;
        }
        .btn-hero-primary:hover {
            background: var(--color-accent-light);
            box-shadow: 0 10px 32px rgba(212, 148, 11, 0.6);
            transform: translateY(-3px);
            color: #fff;
        }
        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 30px;
            border-radius: 28px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: all var(--transition-smooth);
            text-decoration: none;
        }
        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-3px);
        }
        @media (max-width: 767.98px) {
            .page-hero {
                padding: 50px 0 44px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero .hero-subtitle {
                font-size: 1rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
                padding: 13px 24px;
                font-size: 0.95rem;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section-block {
            padding: 70px 0;
        }
        .section-block.section-alt {
            background: var(--color-surface);
        }
        .section-block.section-dark {
            background: var(--color-dark-block);
            color: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            margin-bottom: 8px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 750;
            color: var(--color-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-weak);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.6;
        }
        .section-dark .section-subtitle {
            color: #bcc7d4;
        }
        @media (max-width: 767.98px) {
            .section-block {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* ========== SERVICE CARDS ========== */
        .service-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .service-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-accent);
        }
        .service-card .card-img-wrap {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .service-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .service-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .service-card .card-body-custom {
            padding: 22px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 14px;
            background: rgba(212, 148, 11, 0.1);
            color: var(--color-accent);
            margin-bottom: 10px;
            letter-spacing: 0.03em;
            align-self: flex-start;
        }
        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            margin-bottom: 14px;
            flex: 1;
        }
        .service-card .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }
        .service-card .card-link:hover {
            gap: 10px;
            color: var(--color-accent-light);
        }

        /* ========== SCENARIO CARDS ========== */
        .scenario-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .scenario-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--color-accent);
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }
        .scenario-card:hover::before {
            opacity: 1;
        }
        .scenario-card .scenario-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(15, 36, 64, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--color-primary);
            transition: all var(--transition-smooth);
        }
        .scenario-card:hover .scenario-icon {
            background: var(--color-primary);
            color: #fff;
        }
        .scenario-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.6;
        }
        @media (max-width: 767.98px) {
            .scenario-row {
                grid-template-columns: 1fr;
            }
            .scenario-card {
                padding: 22px 18px;
            }
        }

        /* ========== STEPS ========== */
        .steps-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .steps-list .step-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition-smooth);
        }
        .steps-list .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .steps-list .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 14px;
            box-shadow: 0 4px 14px rgba(15, 36, 64, 0.35);
        }
        .steps-list .step-item h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .steps-list .step-item p {
            font-size: 0.84rem;
            color: var(--color-text-weak);
            line-height: 1.5;
            margin: 0;
        }
        @media (max-width: 991.98px) {
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-list {
                grid-template-columns: 1fr;
            }
        }

        /* ========== STATS DARK BLOCK ========== */
        .stats-dark-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-card-dark {
            padding: 28px 16px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-smooth);
        }
        .stat-card-dark:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.25);
            box-shadow: var(--shadow-glow);
        }
        .stat-card-dark .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-accent-light);
            line-height: 1;
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .stat-card-dark .stat-label {
            font-size: 0.88rem;
            color: #bcc7d4;
            font-weight: 500;
        }
        @media (max-width: 767.98px) {
            .stats-dark-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-card-dark .stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 420px) {
            .stats-dark-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card-dark {
                padding: 20px 10px;
            }
            .stat-card-dark .stat-number {
                font-size: 1.7rem;
            }
        }

        /* ========== FAQ ACCORDION CUSTOM ========== */
        .faq-accordion-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .accordion-custom .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
        }
        .accordion-custom .accordion-item:hover {
            box-shadow: var(--shadow-md);
        }
        .accordion-custom .accordion-button {
            font-weight: 650;
            font-size: 1rem;
            color: var(--color-primary);
            background: var(--color-surface);
            padding: 18px 22px;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-smooth);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: var(--color-accent);
        }
        .accordion-custom .accordion-body {
            padding: 18px 22px 22px;
            font-size: 0.93rem;
            color: var(--color-text-weak);
            line-height: 1.7;
            background: var(--color-surface);
        }

        /* ========== CTA SECTION ========== */
        .cta-section-dark {
            background: var(--color-dark-block-alt);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 70px 0;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }
        .cta-section-dark::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 26, 47, 0.82);
            z-index: 1;
        }
        .cta-section-dark .container {
            position: relative;
            z-index: 2;
        }
        .cta-section-dark h3 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 750;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-section-dark p {
            font-size: 1.05rem;
            color: #cdd6e0;
            max-width: 550px;
            margin: 0 auto 26px;
            line-height: 1.6;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 16px 38px;
            border-radius: 30px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 8px 28px rgba(212, 148, 11, 0.5);
            text-decoration: none;
        }
        .btn-cta-large:hover {
            background: var(--color-accent-light);
            box-shadow: 0 14px 38px rgba(212, 148, 11, 0.65);
            transform: translateY(-4px);
            color: #fff;
        }
        @media (max-width: 767.98px) {
            .cta-section-dark {
                padding: 48px 0;
            }
            .cta-section-dark h3 {
                font-size: 1.5rem;
            }
            .btn-cta-large {
                width: 100%;
                justify-content: center;
                font-size: 1rem;
                padding: 14px 28px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-dark-block);
            color: #cdd6e0;
            padding: 50px 0 24px;
            font-size: 0.9rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: #fff;
            display: block;
            margin-bottom: 8px;
        }
        .footer-col h5 {
            font-size: 0.88rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            color: #8896a7;
            transition: color var(--transition-fast);
            font-size: 0.86rem;
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: #7a8898;
        }
        @media (max-width: 767.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 22px;
            }
            .footer-col:first-child {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 420px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== MISC ========== */
        .text-accent {
            color: var(--color-accent);
        }
        .fw-extrabold {
            font-weight: 800;
        }
        .gap-3 {
            gap: 1rem;
        }

/* roulang page: article */
:root {
            --brand-primary: #1a6fb5;
            --brand-primary-dark: #145a8f;
            --brand-accent: #e8831a;
            --brand-accent-hover: #c96e14;
            --bg-deep: #0b1a2e;
            --bg-deep-alt: #0f2440;
            --bg-light: #f6f9fc;
            --bg-white: #ffffff;
            --text-main: #1a1f2e;
            --text-soft: #4a5568;
            --text-muted: #7a8898;
            --text-on-dark: #e8edf3;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e0;
            --shadow-sm: 0 1px 3px rgba(11,26,46,0.06);
            --shadow-md: 0 4px 16px rgba(11,26,46,0.10);
            --shadow-lg: 0 8px 32px rgba(11,26,46,0.14);
            --shadow-xl: 0 16px 48px rgba(11,26,46,0.18);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-heading: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
            --font-body: 'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
        body{font-family:var(--font-body);font-size:1rem;line-height:1.7;color:var(--text-main);background:var(--bg-light);overflow-x:hidden}
        a{text-decoration:none;color:var(--brand-primary);transition:color var(--transition-fast)}
        a:hover{color:var(--brand-primary-dark)}
        img{max-width:100%;height:auto;display:block}
        ul,ol{list-style:none;padding:0;margin:0}
        button,input{font-family:inherit}
        h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);line-height:1.3;color:var(--text-main)}
        .container{max-width:1200px;padding-left:20px;padding-right:20px}

        /* Top Info Bar */
        .top-info-bar{background:var(--bg-deep);color:var(--text-on-dark);font-size:0.82rem;padding:7px 0;letter-spacing:0.02em}
        .top-info-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px}
        .top-info-bar a{color:#8ec8f2;font-weight:500;transition:color var(--transition-fast)}
        .top-info-bar a:hover{color:#b8dcf8}
        .top-info-bar .info-tag{background:var(--brand-accent);color:#fff;padding:3px 10px;border-radius:20px;font-size:0.72rem;font-weight:600;white-space:nowrap}

        /* Main Navbar */
        .navbar-main{background:var(--bg-white);border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:1020;box-shadow:var(--shadow-sm)}
        .navbar-main .container{display:flex;align-items:center;justify-content:space-between;padding-top:10px;padding-bottom:10px}
        .navbar-brand{display:flex;align-items:center;gap:9px;font-family:var(--font-heading);font-size:1.25rem;font-weight:700;color:var(--brand-primary);white-space:nowrap;transition:color var(--transition-fast)}
        .navbar-brand:hover{color:var(--brand-primary-dark)}
        .brand-icon{display:flex;align-items:center;justify-content:center;width:38px;height:38px;background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-dark));color:#fff;border-radius:var(--radius-sm);font-size:1rem}
        .navbar-toggler{background:none;border:none;color:var(--text-main);font-size:1.4rem;cursor:pointer;padding:6px 8px;border-radius:var(--radius-sm);transition:background var(--transition-fast)}
        .navbar-toggler:hover{background:var(--bg-light)}
        .navbar-nav-custom{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
        .navbar-nav-custom .nav-link{display:inline-block;padding:8px 15px;font-size:0.93rem;font-weight:500;color:var(--text-soft);border-radius:var(--radius-sm);transition:all var(--transition-fast);white-space:nowrap}
        .navbar-nav-custom .nav-link:hover{color:var(--brand-primary);background:var(--bg-light)}
        .navbar-nav-custom .nav-link.active{color:var(--brand-primary);background:#e8f4fd;font-weight:600}
        .navbar-nav-custom .nav-cta{background:var(--brand-accent);color:#fff!important;font-weight:600;padding:8px 18px;border-radius:var(--radius-sm);margin-left:6px;transition:all var(--transition-base)}
        .navbar-nav-custom .nav-cta:hover{background:var(--brand-accent-hover);box-shadow:var(--shadow-md);transform:translateY(-1px)}

        /* Breadcrumb */
        .breadcrumb-wrap{background:var(--bg-white);border-bottom:1px solid var(--border-light);padding:14px 0}
        .breadcrumb-custom{display:flex;align-items:center;gap:8px;font-size:0.85rem;color:var(--text-muted);flex-wrap:wrap}
        .breadcrumb-custom a{color:var(--text-soft);transition:color var(--transition-fast)}
        .breadcrumb-custom a:hover{color:var(--brand-primary)}
        .breadcrumb-custom .separator{color:var(--border-medium);font-size:0.7rem}
        .breadcrumb-custom .current{color:var(--text-main);font-weight:500}

        /* Article Main */
        .article-main{padding:40px 0 60px}
        .article-layout{display:grid;grid-template-columns:1fr 320px;gap:36px;align-items:start}
        .article-content-area{background:var(--bg-white);border-radius:var(--radius-lg);padding:36px 40px;box-shadow:var(--shadow-md);border:1px solid var(--border-light)}
        .article-meta{display:flex;flex-wrap:wrap;gap:16px;align-items:center;font-size:0.85rem;color:var(--text-muted);margin-bottom:18px;padding-bottom:16px;border-bottom:1px solid var(--border-light)}
        .article-meta .meta-item{display:flex;align-items:center;gap:6px}
        .article-meta .meta-item i{color:var(--brand-primary);font-size:0.85rem}
        .article-meta .category-badge{display:inline-block;background:#e8f4fd;color:var(--brand-primary);padding:4px 12px;border-radius:20px;font-size:0.78rem;font-weight:600}
        .article-content-area h1{font-size:2rem;font-weight:700;color:var(--text-main);margin-bottom:8px;line-height:1.35}
        .article-featured-image{margin:20px 0 28px;border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-md)}
        .article-featured-image img{width:100%;object-fit:cover;border-radius:var(--radius-md)}
        .article-body{font-size:1.05rem;line-height:1.85;color:var(--text-main)}
        .article-body h2{font-size:1.5rem;font-weight:700;margin:32px 0 14px;color:var(--text-main);padding-bottom:8px;border-bottom:2px solid var(--border-light)}
        .article-body h3{font-size:1.25rem;font-weight:600;margin:24px 0 10px;color:var(--text-main)}
        .article-body p{margin-bottom:16px}
        .article-body ul,.article-body ol{margin:12px 0 20px 24px}
        .article-body ul li,.article-body ol li{margin-bottom:8px;position:relative}
        .article-body ul{list-style:disc}
        .article-body ol{list-style:decimal}
        .article-body blockquote{border-left:4px solid var(--brand-primary);background:#f0f7fc;padding:16px 20px;margin:20px 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-soft);font-style:italic}
        .article-body img{border-radius:var(--radius-md);margin:20px 0;box-shadow:var(--shadow-sm)}
        .article-body table{width:100%;border-collapse:collapse;margin:20px 0}
        .article-body table th,.article-body table td{padding:10px 14px;border:1px solid var(--border-light);text-align:left}
        .article-body table th{background:var(--bg-light);font-weight:600}
        .article-body code{background:#f4f6f8;padding:2px 7px;border-radius:4px;font-size:0.9em;color:#c7254e}
        .article-body pre{background:#1a1f2e;color:#e8edf3;padding:20px;border-radius:var(--radius-md);overflow-x:auto;margin:20px 0;line-height:1.6}
        .article-body pre code{background:none;color:inherit;padding:0;font-size:0.9em}

        /* No Article State */
        .no-article-state{text-align:center;padding:60px 30px}
        .no-article-state .icon-wrap{font-size:4rem;color:var(--text-muted);margin-bottom:20px}
        .no-article-state h2{font-size:1.6rem;margin-bottom:10px;color:var(--text-main)}
        .no-article-state p{color:var(--text-soft);margin-bottom:24px}
        .no-article-state .btn-back{display:inline-block;background:var(--brand-primary);color:#fff;padding:12px 28px;border-radius:var(--radius-sm);font-weight:600;transition:all var(--transition-base)}
        .no-article-state .btn-back:hover{background:var(--brand-primary-dark);box-shadow:var(--shadow-md);transform:translateY(-2px);color:#fff}

        /* Sidebar */
        .article-sidebar{display:flex;flex-direction:column;gap:24px}
        .sidebar-card{background:var(--bg-white);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-md);border:1px solid var(--border-light)}
        .sidebar-card h4{font-size:1.05rem;font-weight:600;margin-bottom:16px;color:var(--text-main);padding-bottom:10px;border-bottom:2px solid var(--border-light)}
        .sidebar-card .card-entry{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border-light);transition:all var(--transition-fast)}
        .sidebar-card .card-entry:last-child{border-bottom:none}
        .sidebar-card .card-entry:hover{background:var(--bg-light);margin:0 -10px;padding-left:10px;padding-right:10px;border-radius:var(--radius-sm)}
        .sidebar-card .card-entry img{width:52px;height:52px;object-fit:cover;border-radius:var(--radius-sm);flex-shrink:0}
        .sidebar-card .card-entry .entry-info{flex:1}
        .sidebar-card .card-entry .entry-title{font-size:0.9rem;font-weight:600;color:var(--text-main);margin-bottom:2px}
        .sidebar-card .card-entry .entry-desc{font-size:0.78rem;color:var(--text-muted)}
        .sidebar-card .card-entry i.fa-chevron-right{color:var(--text-muted);font-size:0.7rem;transition:transform var(--transition-fast)}
        .sidebar-card .card-entry:hover i.fa-chevron-right{transform:translateX(3px);color:var(--brand-primary)}
        .sidebar-cta-card{background:linear-gradient(135deg,var(--bg-deep),var(--bg-deep-alt));color:#fff;border-radius:var(--radius-lg);padding:28px 24px;text-align:center;box-shadow:var(--shadow-lg)}
        .sidebar-cta-card h4{color:#fff;font-size:1.1rem;font-weight:700;margin-bottom:8px;border-bottom:none;padding-bottom:0}
        .sidebar-cta-card p{color:#c0d4e8;font-size:0.85rem;margin-bottom:18px;line-height:1.5}
        .sidebar-cta-card .btn-cta-side{display:inline-block;background:var(--brand-accent);color:#fff;padding:10px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:0.9rem;transition:all var(--transition-base)}
        .sidebar-cta-card .btn-cta-side:hover{background:var(--brand-accent-hover);box-shadow:0 6px 20px rgba(232,131,26,0.4);transform:translateY(-2px);color:#fff}

        /* Related Section */
        .related-section{padding:40px 0 50px;background:var(--bg-white);border-top:1px solid var(--border-light)}
        .related-section .section-heading{text-align:center;margin-bottom:32px}
        .related-section .section-heading h2{font-size:1.6rem;font-weight:700;color:var(--text-main)}
        .related-section .section-heading .divider{width:50px;height:3px;background:var(--brand-accent);margin:10px auto 0;border-radius:2px}
        .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
        .related-card{background:var(--bg-light);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:all var(--transition-base);cursor:pointer}
        .related-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:var(--brand-primary)}
        .related-card img{width:100%;height:180px;object-fit:cover}
        .related-card .related-card-body{padding:18px 20px}
        .related-card .related-card-body h5{font-size:1rem;font-weight:600;margin-bottom:6px;color:var(--text-main)}
        .related-card .related-card-body p{font-size:0.85rem;color:var(--text-muted);margin:0;line-height:1.5}

        /* CTA Section */
        .cta-section{padding:60px 0;background:linear-gradient(170deg,var(--bg-deep) 0%,#132d4a 100%);color:#fff;text-align:center;position:relative;overflow:hidden}
        .cta-section::before{content:'';position:absolute;top:-60px;right:-80px;width:300px;height:300px;background:rgba(232,131,26,0.12);border-radius:50%;pointer-events:none}
        .cta-section::after{content:'';position:absolute;bottom:-40px;left:-60px;width:220px;height:220px;background:rgba(26,111,181,0.10);border-radius:50%;pointer-events:none}
        .cta-section .container{position:relative;z-index:1}
        .cta-section h2{font-size:2rem;font-weight:700;color:#fff;margin-bottom:12px}
        .cta-section p{color:#c0d4e8;font-size:1.05rem;margin-bottom:28px;max-width:600px;margin-left:auto;margin-right:auto}
        .cta-section .btn-cta-large{display:inline-block;background:var(--brand-accent);color:#fff;padding:14px 36px;border-radius:var(--radius-sm);font-weight:700;font-size:1.1rem;transition:all var(--transition-base);box-shadow:0 6px 24px rgba(232,131,26,0.35)}
        .cta-section .btn-cta-large:hover{background:var(--brand-accent-hover);box-shadow:0 10px 32px rgba(232,131,26,0.5);transform:translateY(-3px);color:#fff}
        .cta-section .cta-trust{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin-top:20px;font-size:0.82rem;color:#8ea8c0}
        .cta-section .cta-trust span{display:flex;align-items:center;gap:5px}

        /* FAQ */
        .faq-section{padding:50px 0 60px;background:var(--bg-light)}
        .faq-section .section-heading{text-align:center;margin-bottom:36px}
        .faq-section .section-heading h2{font-size:1.6rem;font-weight:700;color:var(--text-main)}
        .faq-section .section-heading .divider{width:50px;height:3px;background:var(--brand-accent);margin:10px auto 0;border-radius:2px}
        .faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
        .faq-item{background:var(--bg-white);border-radius:var(--radius-md);padding:20px 24px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);cursor:pointer;transition:all var(--transition-fast)}
        .faq-item:hover{border-color:var(--brand-primary);box-shadow:var(--shadow-md)}
        .faq-item .faq-question{font-weight:600;font-size:1rem;color:var(--text-main);display:flex;justify-content:space-between;align-items:center;gap:12px}
        .faq-item .faq-question i{color:var(--brand-primary);transition:transform var(--transition-fast);font-size:0.85rem}
        .faq-item.open .faq-question i{transform:rotate(180deg)}
        .faq-item .faq-answer{margin-top:10px;color:var(--text-soft);font-size:0.93rem;line-height:1.7;display:none}
        .faq-item.open .faq-answer{display:block}

        /* Footer */
        .site-footer{background:var(--bg-deep);color:var(--text-on-dark);padding:48px 0 20px}
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;margin-bottom:32px}
        .footer-brand{font-family:var(--font-heading);font-size:1.2rem;font-weight:700;color:#fff;display:block;margin-bottom:8px}
        .footer-col h5{color:#fff;font-size:0.95rem;font-weight:600;margin-bottom:14px;padding-bottom:8px;border-bottom:2px solid rgba(255,255,255,0.12)}
        .footer-col ul li{margin-bottom:8px}
        .footer-col ul li a{color:#a0b8cc;font-size:0.88rem;transition:color var(--transition-fast)}
        .footer-col ul li a:hover{color:#d0e0f0;padding-left:3px}
        .footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:18px;text-align:center;font-size:0.82rem;color:#7a8898}

        /* Back to top */
        .back-to-top{position:fixed;bottom:28px;right:28px;width:44px;height:44px;background:var(--brand-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-lg);transition:all var(--transition-base);z-index:999;opacity:0;visibility:hidden;transform:translateY(10px)}
        .back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
        .back-to-top:hover{background:var(--brand-primary-dark);transform:translateY(-3px)}

        @media(max-width:1024px){
            .article-layout{grid-template-columns:1fr;gap:28px}
            .article-sidebar{flex-direction:row;flex-wrap:wrap;gap:16px}
            .sidebar-card{flex:1 1 280px}
            .sidebar-cta-card{flex:1 1 280px}
            .related-grid{grid-template-columns:repeat(2,1fr)}
        }
        @media(max-width:768px){
            .navbar-nav-custom{display:none;flex-direction:column;width:100%;background:var(--bg-white);position:absolute;top:100%;left:0;padding:12px 20px;box-shadow:var(--shadow-lg);border-radius:0 0 var(--radius-md) var(--radius-md);z-index:1019}
            .navbar-nav-custom.show{display:flex}
            .navbar-nav-custom .nav-link{width:100%;text-align:center;padding:10px}
            .navbar-nav-custom .nav-cta{margin-left:0;margin-top:6px}
            .navbar-main .container{flex-wrap:wrap}
            .article-content-area{padding:24px 20px}
            .article-content-area h1{font-size:1.5rem}
            .article-body{font-size:1rem}
            .related-grid{grid-template-columns:1fr}
            .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
            .cta-section h2{font-size:1.5rem}
            .faq-item{padding:16px 18px}
        }
        @media(max-width:520px){
            .article-meta{flex-direction:column;align-items:flex-start;gap:8px}
            .footer-grid{grid-template-columns:1fr}
            .cta-section{padding:40px 16px}
            .sidebar-card{flex:1 1 100%}
            .sidebar-cta-card{flex:1 1 100%}
            .article-sidebar{flex-direction:column}
            .top-info-bar .container{justify-content:center;text-align:center}
        }

/* roulang page: category3 */
:root {
            --color-primary: #1a5fdc;
            --color-primary-dark: #1349b0;
            --color-primary-light: #e8f1ff;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-danger: #ef4444;
            --color-success: #10b981;
            --color-bg: #f8fafc;
            --color-bg-dark: #0f172a;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-soft: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
            --topbar-height: 38px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--nav-height) + var(--topbar-height) + 20px);
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        /* ===== TOP BAR ===== */
        .top-bar {
            background-color: #0f172a;
            color: #cbd5e1;
            font-size: 0.8rem;
            height: var(--topbar-height);
            display: flex;
            align-items: center;
            z-index: 1050;
            position: relative;
        }
        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .top-bar a {
            color: #e2e8f0;
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .top-bar a:hover {
            color: #ffffff;
        }
        .top-bar .top-bar-left {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-bar .top-bar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .top-bar .security-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            color: #10b981;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .top-bar .security-badge i {
            font-size: 0.7rem;
        }

        /* ===== NAV ===== */
        .navbar-main {
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1040;
            box-shadow: var(--shadow-sm);
        }
        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .navbar-brand {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text) !important;
            display: flex;
            align-items: center;
            gap: 9px;
            white-space: nowrap;
            letter-spacing: -0.01em;
            transition: opacity var(--transition-fast);
        }
        .navbar-brand:hover {
            opacity: 0.8;
            color: var(--color-text) !important;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary), #2563eb);
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .navbar-nav-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .navbar-nav-custom .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .navbar-nav-custom .nav-link:hover {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
        }
        .navbar-nav-custom .nav-link.active {
            color: var(--color-primary);
            background-color: var(--color-primary-light);
            font-weight: 600;
        }
        .nav-cta {
            background: var(--color-primary) !important;
            color: #ffffff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: 24px !important;
            transition: all var(--transition-base) !important;
            box-shadow: 0 2px 8px rgba(26, 95, 220, 0.3);
        }
        .nav-cta:hover {
            background: var(--color-primary-dark) !important;
            box-shadow: 0 4px 16px rgba(26, 95, 220, 0.4);
            transform: translateY(-1px);
        }
        .nav-cta.active {
            background: var(--color-primary-dark) !important;
            color: #ffffff !important;
        }
        .navbar-toggler {
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .navbar-toggler:hover {
            background: var(--color-border-light);
        }

        @media (max-width: 991.98px) {
            .navbar-nav-custom {
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding: 12px 16px;
                border-bottom: 2px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                display: none;
                z-index: 1030;
            }
            .navbar-nav-custom.show {
                display: flex;
            }
            .navbar-nav-custom .nav-link {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
            }
            .nav-cta {
                text-align: center;
                justify-content: center;
                border-radius: var(--radius-md) !important;
                margin-top: 4px;
            }
        }
        @media (min-width: 992px) {
            .navbar-nav-custom {
                display: flex !important;
            }
            .navbar-toggler {
                display: none;
            }
        }
        @media (max-width: 575.98px) {
            .top-bar .top-bar-right {
                display: none;
            }
            .top-bar .top-bar-left {
                font-size: 0.7rem;
                gap: 8px;
            }
            .navbar-brand {
                font-size: 1.05rem;
                gap: 6px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
        }

        /* ===== PAGE HERO ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(160deg, #0f172a 0%, #1e293b 40%, #1a3a5c 70%, #0f2847 100%);
            padding: 70px 0 80px;
            overflow: hidden;
            color: #ffffff;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(0deg, var(--color-bg) 0%, transparent 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #f1f5f9;
            padding: 7px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 18px;
            backdrop-filter: blur(4px);
        }
        .page-hero .badge-pill i {
            color: #10b981;
            font-size: 0.7rem;
        }
        .page-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.65rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            line-height: 1.2;
            color: #ffffff;
        }
        .page-hero h1 span {
            color: #60a5fa;
        }
        .page-hero .hero-subtitle {
            font-size: 1.15rem;
            color: #cbd5e1;
            max-width: 620px;
            margin-bottom: 28px;
            line-height: 1.65;
        }
        .page-hero .hero-metrics {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }
        .page-hero .hero-metric-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .page-hero .hero-metric-num {
            font-size: 2rem;
            font-weight: 800;
            color: #f59e0b;
            line-height: 1;
            font-family: var(--font-heading);
        }
        .page-hero .hero-metric-label {
            font-size: 0.85rem;
            color: #94a3b8;
            line-height: 1.3;
        }
        .hero-btn-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 30px;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: 0 4px 18px rgba(26, 95, 220, 0.4);
            text-decoration: none;
        }
        .btn-hero-primary:hover {
            background: #2563eb;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 95, 220, 0.5);
            color: #fff;
        }
        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #e2e8f0;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 30px;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.35);
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
        }
        .btn-hero-outline:hover {
            border-color: #ffffff;
            color: #ffffff;
            background: rgba(255, 255, 255, 0.06);
        }

        @media (max-width: 767.98px) {
            .page-hero {
                padding: 44px 0 50px;
            }
            .page-hero h1 {
                font-size: 1.75rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .page-hero .hero-metrics {
                gap: 16px;
            }
            .page-hero .hero-metric-num {
                font-size: 1.5rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 11px 22px;
                font-size: 0.9rem;
                border-radius: 26px;
            }
        }

        /* ===== SECTION ===== */
        .section {
            padding: 64px 0;
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: #f1f5f9;
        }
        .section-light {
            background: #ffffff;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 750;
            letter-spacing: -0.01em;
            margin-bottom: 14px;
            line-height: 1.25;
            color: var(--color-text);
        }
        .section-dark .section-title {
            color: #ffffff;
        }
        .section-desc {
            color: var(--color-text-soft);
            font-size: 1.05rem;
            max-width: 680px;
            margin-bottom: 36px;
            line-height: 1.65;
        }
        .section-dark .section-desc {
            color: #94a3b8;
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-desc {
                font-size: 0.95rem;
                margin-bottom: 24px;
            }
        }

        /* ===== SECURITY CARDS ===== */
        .security-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        .security-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #d0ddf8;
        }
        .security-card .card-icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.35rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .security-card .card-icon-wrap.icon-blue {
            background: #eff6ff;
            color: #2563eb;
        }
        .security-card .card-icon-wrap.icon-green {
            background: #ecfdf5;
            color: #10b981;
        }
        .security-card .card-icon-wrap.icon-amber {
            background: #fffbeb;
            color: #f59e0b;
        }
        .security-card .card-icon-wrap.icon-red {
            background: #fef2f2;
            color: #ef4444;
        }
        .security-card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .security-card p {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            margin-bottom: 0;
            line-height: 1.6;
            flex-grow: 1;
        }
        .security-card .card-status {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 12px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .security-card .card-status.safe {
            color: #10b981;
        }
        .security-card .card-status.warning {
            color: #f59e0b;
        }

        /* ===== FLOW STEPS ===== */
        .flow-step-wrap {
            display: flex;
            gap: 0;
            align-items: stretch;
            flex-wrap: wrap;
        }
        .flow-step {
            flex: 1 1 220px;
            min-width: 200px;
            text-align: center;
            padding: 28px 18px;
            position: relative;
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }
        .flow-step:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .flow-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            font-weight: 800;
            font-size: 1.15rem;
            margin-bottom: 14px;
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .flow-step h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .flow-step p {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            margin-bottom: 0;
            line-height: 1.55;
        }
        .flow-connector {
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 1.3rem;
            padding: 0 6px;
            flex-shrink: 0;
        }
        @media (max-width: 991.98px) {
            .flow-step-wrap {
                flex-direction: column;
                gap: 10px;
            }
            .flow-connector {
                transform: rotate(90deg);
                padding: 4px 0;
            }
        }

        /* ===== DARK METRICS SECTION ===== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }
        .metric-card-dark {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-smooth);
            backdrop-filter: blur(2px);
        }
        .metric-card-dark:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }
        .metric-card-dark .metric-num {
            font-size: 2.8rem;
            font-weight: 850;
            color: #f59e0b;
            line-height: 1;
            margin-bottom: 6px;
            font-family: var(--font-heading);
            letter-spacing: -0.02em;
        }
        .metric-card-dark .metric-num.green {
            color: #34d399;
        }
        .metric-card-dark .metric-num.blue {
            color: #60a5fa;
        }
        .metric-card-dark .metric-label {
            font-size: 0.9rem;
            color: #94a3b8;
            font-weight: 500;
        }
        .metric-card-dark .metric-sub {
            font-size: 0.75rem;
            color: #64748b;
            margin-top: 2px;
        }

        /* ===== IMAGE FEATURE BLOCK ===== */
        .feature-block {
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }
        .feature-block.reverse {
            flex-direction: row-reverse;
        }
        .feature-block .feature-image {
            flex: 1 1 380px;
            min-width: 280px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .feature-block .feature-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            display: block;
            transition: transform var(--transition-smooth);
        }
        .feature-block .feature-image:hover img {
            transform: scale(1.04);
        }
        .feature-block .feature-content {
            flex: 1 1 340px;
            min-width: 260px;
        }
        .feature-block .feature-content h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 750;
            margin-bottom: 12px;
            color: var(--color-text);
        }
        .feature-block .feature-content p {
            color: var(--color-text-soft);
            font-size: 0.98rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 18px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 9px;
            font-size: 0.9rem;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .feature-list li i {
            color: #10b981;
            font-size: 0.85rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        @media (max-width: 767.98px) {
            .feature-block {
                gap: 20px;
            }
            .feature-block .feature-content h3 {
                font-size: 1.25rem;
            }
        }

        /* ===== FAQ ACCORDION ===== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-text);
            background: #ffffff;
            border-radius: var(--radius-md) !important;
            padding: 16px 20px;
            transition: all var(--transition-fast);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: var(--color-primary-light);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(26, 95, 220, 0.12);
            border-color: transparent;
        }
        .faq-accordion .accordion-body {
            font-size: 0.92rem;
            color: var(--color-text-soft);
            line-height: 1.7;
            padding: 14px 20px 20px;
            background: #fafbfc;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            background: linear-gradient(145deg, #1a3a5c 0%, #0f2847 50%, #0f172a 100%);
            border-radius: var(--radius-2xl);
            padding: 48px 40px;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 1.85rem;
            font-weight: 750;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 1rem;
            color: #cbd5e1;
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            background: #f59e0b;
            color: #0f172a;
            font-weight: 700;
            padding: 14px 34px;
            border-radius: 32px;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: 0 6px 22px rgba(245, 158, 11, 0.4);
            text-decoration: none;
        }
        .btn-cta-large:hover {
            background: #fbbf24;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(245, 158, 11, 0.5);
            color: #0f172a;
        }
        @media (max-width: 575.98px) {
            .cta-section {
                padding: 32px 18px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .btn-cta-large {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 44px 0 24px;
            margin-top: auto;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 28px;
            margin-bottom: 28px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: #ffffff;
            display: block;
            margin-bottom: 6px;
        }
        .site-footer h5 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #e2e8f0;
            margin-bottom: 10px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 5px;
        }
        .site-footer ul li a {
            color: #94a3b8;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: #e2e8f0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 16px;
            text-align: center;
            color: #64748b;
            font-size: 0.8rem;
        }
        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        /* ===== UTILITY ===== */
        .container {
            max-width: var(--max-width);
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
        }
        .text-primary-custom {
            color: var(--color-primary) !important;
        }
        .text-accent {
            color: var(--color-accent) !important;
        }
        .fw-750 {
            font-weight: 750;
        }
        .fw-850 {
            font-weight: 850;
        }

        /* ===== SAFETY ALERT BAR ===== */
        .safety-alert {
            background: #fefce8;
            border: 1px solid #fde68a;
            border-radius: var(--radius-md);
            padding: 14px 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: #92400e;
            margin-bottom: 28px;
        }
        .safety-alert i {
            color: #f59e0b;
            font-size: 1.15rem;
            flex-shrink: 0;
        }

/* roulang page: category2 */
:root {
            --primary: #0f1f3d;
            --primary-light: #1a3360;
            --accent: #e8a817;
            --accent-hover: #c98f14;
            --accent-light: #fdf3d1;
            --bg-white: #ffffff;
            --bg-light: #f7f8fa;
            --bg-dark: #0a1628;
            --bg-dark-card: #111d35;
            --text-dark: #1a1a2e;
            --text-body: #3a3f4a;
            --text-muted: #6c757d;
            --text-light: #a8b4c2;
            --border: #e2e6ea;
            --border-light: #eef1f4;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);
            --transition: 0.22s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-white);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        .container {
            max-width: 1180px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== TOP INFO BAR ========== */
        .top-info-bar {
            background: var(--primary);
            color: #c0ccdd;
            font-size: 0.82rem;
            padding: 6px 0;
            letter-spacing: 0.3px;
        }
        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 6px;
        }
        .top-info-bar .info-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .top-info-bar .info-left i {
            color: var(--accent);
            font-size: 0.7rem;
        }
        .top-info-bar .info-right a {
            color: #c0ccdd;
            font-size: 0.8rem;
            margin-left: 14px;
            transition: color var(--transition);
        }
        .top-info-bar .info-right a:hover {
            color: var(--accent);
        }
        .top-info-bar .badge-secure {
            background: rgba(232, 168, 23, 0.18);
            color: var(--accent);
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 0.73rem;
            font-weight: 600;
            letter-spacing: 0.4px;
        }

        /* ========== MAIN NAV ========== */
        .navbar-main {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }
        .navbar-main.scrolled {
            box-shadow: var(--shadow);
        }
        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
            min-height: 60px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 9px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.28rem;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: 0.3px;
            transition: color var(--transition);
        }
        .navbar-brand:hover {
            color: var(--primary-light);
        }
        .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
        }
        .navbar-toggler {
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 1.2rem;
            color: var(--primary);
            transition: all var(--transition);
        }
        .navbar-toggler:hover {
            background: var(--bg-light);
            border-color: var(--primary-light);
        }
        .navbar-nav-custom {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
        }
        .navbar-nav-custom li a.nav-link {
            display: block;
            padding: 10px 16px;
            font-size: 0.94rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }
        .navbar-nav-custom li a.nav-link:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .navbar-nav-custom li a.nav-link.active {
            color: var(--primary);
            background: #eef3fa;
            font-weight: 600;
        }
        .navbar-nav-custom li a.nav-cta {
            background: var(--accent);
            color: #fff !important;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: 22px;
            margin-left: 8px;
            letter-spacing: 0.3px;
            box-shadow: 0 2px 10px rgba(232, 168, 23, 0.3);
            transition: all var(--transition);
        }
        .navbar-nav-custom li a.nav-cta:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 16px rgba(232, 168, 23, 0.45);
            transform: translateY(-1px);
        }

        @media (max-width: 991.98px) {
            .navbar-nav-custom {
                display: none;
                flex-direction: column;
                width: 100%;
                position: absolute;
                top: 100%;
                left: 0;
                background: var(--bg-white);
                border-top: 1px solid var(--border-light);
                border-bottom: 1px solid var(--border-light);
                padding: 10px 16px;
                box-shadow: var(--shadow-lg);
                gap: 0;
                z-index: 1040;
            }
            .navbar-nav-custom.show {
                display: flex;
            }
            .navbar-nav-custom li a.nav-link {
                padding: 12px 14px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .navbar-nav-custom li a.nav-cta {
                margin-left: 0;
                margin-top: 6px;
                text-align: center;
                border-radius: var(--radius);
            }
            .navbar-main .container {
                position: relative;
            }
        }

        /* ========== HERO ========== */
        .hero-category {
            position: relative;
            background: linear-gradient(160deg, #0a1628 0%, #132442 40%, #0f1f3d 100%);
            color: #fff;
            padding: 80px 0 90px;
            overflow: hidden;
            z-index: 1;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
            pointer-events: none;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(232, 168, 23, 0.35), transparent);
            z-index: 1;
        }
        .hero-category .container {
            position: relative;
            z-index: 2;
        }
        .hero-category .hero-badge {
            display: inline-block;
            background: rgba(232, 168, 23, 0.2);
            color: var(--accent);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(232, 168, 23, 0.25);
        }
        .hero-category h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 0.8px;
            line-height: 1.25;
            margin-bottom: 18px;
            color: #fff;
        }
        .hero-category h1 .highlight {
            color: var(--accent);
            position: relative;
        }
        .hero-category .hero-sub {
            font-size: 1.12rem;
            color: #bcc7d9;
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .hero-category .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            letter-spacing: 0.3px;
            border: none;
            transition: all var(--transition);
            box-shadow: 0 4px 18px rgba(232, 168, 23, 0.35);
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 24px rgba(232, 168, 23, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            letter-spacing: 0.3px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition);
        }
        .btn-outline-white:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .hero-category .hero-stats {
            display: flex;
            gap: 36px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .hero-category .hero-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            font-family: var(--font-heading);
            letter-spacing: 0.5px;
        }
        .hero-category .hero-stat .stat-label {
            font-size: 0.85rem;
            color: #8899b5;
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .hero-category {
                padding: 50px 0 60px;
            }
            .hero-category h1 {
                font-size: 1.8rem;
            }
            .hero-category .hero-sub {
                font-size: 0.95rem;
            }
            .hero-category .hero-stats {
                gap: 20px;
            }
            .hero-category .hero-stat .stat-num {
                font-size: 1.5rem;
            }
            .btn-accent,
            .btn-outline-white {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section-pad {
            padding: 70px 0;
        }
        .section-pad-sm {
            padding: 50px 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.8px;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 12px;
            background: var(--accent-light);
            padding: 5px 14px;
            border-radius: 20px;
        }
        .section-heading {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .section-heading-sm {
            font-family: var(--font-heading);
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 640px;
            line-height: 1.7;
        }
        .bg-light-section {
            background: var(--bg-light);
        }
        .bg-dark-section {
            background: var(--bg-dark);
            color: #e0e6ef;
        }
        .bg-dark-section .section-heading,
        .bg-dark-section .section-heading-sm {
            color: #fff;
        }
        .bg-dark-section .section-desc {
            color: #a8b8cc;
        }

        /* ========== STEPS / PROCESS ========== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px 26px;
            text-align: center;
            position: relative;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            counter-increment: step;
        }
        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #d0d8e2;
        }
        .step-card .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 16px;
            font-family: var(--font-heading);
        }
        .step-card .step-num::before {
            content: counter(step);
        }
        .step-card h4 {
            font-family: var(--font-heading);
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        .steps-connector {
            display: none;
        }

        @media (max-width: 991.98px) {
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-row {
                grid-template-columns: 1fr;
            }
        }

        /* ========== METHOD CARDS ========== */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .method-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .method-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .method-card .method-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: #eef2f7;
        }
        .method-card .method-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .method-card:hover .method-img-wrap img {
            transform: scale(1.05);
        }
        .method-card .method-body {
            padding: 20px 20px 22px;
        }
        .method-card .method-tag {
            display: inline-block;
            font-size: 0.73rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 14px;
            background: #eef3fa;
            color: var(--primary);
            margin-bottom: 10px;
            letter-spacing: 0.4px;
        }
        .method-card h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .method-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .method-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== SAFETY BLOCK ========== */
        .safety-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }
        .safety-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--bg-dark-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 18px 20px;
            transition: all var(--transition);
        }
        .safety-list li:hover {
            border-color: rgba(232, 168, 23, 0.35);
            box-shadow: 0 0 20px rgba(232, 168, 23, 0.08);
        }
        .safety-list li .safety-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(232, 168, 23, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1rem;
        }
        .safety-list li .safety-text h5 {
            font-size: 0.98rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 4px;
            font-family: var(--font-heading);
        }
        .safety-list li .safety-text p {
            font-size: 0.84rem;
            color: #98a8bd;
            margin: 0;
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .safety-list {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-wrap .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius) !important;
            margin-bottom: 10px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-wrap .accordion-button {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-dark);
            background: var(--bg-white);
            padding: 18px 20px;
            border-radius: var(--radius) !important;
            box-shadow: none;
            transition: all var(--transition);
            font-family: var(--font-heading);
            letter-spacing: 0.2px;
        }
        .faq-wrap .accordion-button:not(.collapsed) {
            background: #fafbfc;
            color: var(--primary);
            box-shadow: none;
        }
        .faq-wrap .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(15, 31, 61, 0.1);
            border-color: var(--primary-light);
        }
        .faq-wrap .accordion-button::after {
            background-size: 14px;
            transition: all var(--transition);
        }
        .faq-wrap .accordion-body {
            padding: 16px 20px 20px;
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.75;
            background: #fafbfc;
        }

        /* ========== CTA SECTION ========== */
        .cta-block {
            background: linear-gradient(150deg, #0a1628 0%, #132442 50%, #0f1f3d 100%);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
            pointer-events: none;
        }
        .cta-block>* {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .cta-block p {
            color: #b8c6d9;
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-block .btn-accent {
            font-size: 1.05rem;
            padding: 14px 34px;
            border-radius: 30px;
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 40px 22px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.92rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0d1729;
            color: #b0becf;
            padding: 50px 0 0;
            font-size: 0.9rem;
            border-top: 3px solid rgba(232, 168, 23, 0.3);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: #fff;
            display: block;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .site-footer h5 {
            font-family: var(--font-heading);
            font-size: 0.9rem;
            font-weight: 700;
            color: #d0d8e4;
            margin-bottom: 12px;
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 7px;
        }
        .site-footer ul li a {
            color: #8899b0;
            font-size: 0.86rem;
            transition: color var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.8rem;
            color: #5e7085;
        }

        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== UTILS ========== */
        .text-accent {
            color: var(--accent) !important;
        }
        .fw-800 {
            font-weight: 800;
        }
        .mt-sec {
            margin-top: 60px;
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 46px 0;
            }
            .section-heading {
                font-size: 1.55rem;
            }
            .section-heading-sm {
                font-size: 1.25rem;
            }
        }