/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #FF6B00;
            --primary-dark: #E05E00;
            --primary-light: #FFE8D0;
            --secondary: #0A2540;
            --secondary-light: #1A3A5C;
            --accent: #FF8C38;
            --bg-warm: #F5F5F5;
            --bg-white: #FFFFFF;
            --text-dark: #1A1A2E;
            --text-body: #333333;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border-color: #E0E0E0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
        }

        /* ===== Base Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        p { margin-bottom: 1rem; }
        .container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }

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

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .navbar { padding: 12px 0; }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--secondary) !important;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
        }
        .navbar-brand .brand-text {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-body) !important;
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar-nav .nav-link:hover { color: var(--primary) !important; background: var(--primary-light); }
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
            background: var(--primary-light);
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta-btn {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff !important;
            border-radius: var(--radius-md) !important;
            padding: 10px 28px !important;
            font-weight: 600;
            border: none;
            box-shadow: 0 4px 12px rgba(255,107,0,0.3);
            transition: var(--transition);
        }
        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff !important;
            box-shadow: 0 6px 20px rgba(255,107,0,0.4);
            transform: translateY(-1px);
        }
        .navbar-toggler {
            border: none;
            padding: 8px;
            color: var(--secondary);
            font-size: 1.5rem;
        }
        .navbar-toggler:focus { box-shadow: none; }
        @media (max-width: 991px) {
            .navbar-nav { padding-top: 16px; }
            .navbar-nav .nav-link { padding: 12px 16px !important; }
            .navbar-nav .nav-link.active::after { display: none; }
            .nav-cta-btn { margin-top: 12px; text-align: center; }
        }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            padding: 140px 0 100px;
            background: linear-gradient(160deg, var(--secondary) 0%, #0D2E4E 40%, #1A2A3A 100%);
            overflow: hidden;
            min-height: 620px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255,107,0,0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,107,0,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-content { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-block;
            background: rgba(255,107,0,0.18);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            border: 1px solid rgba(255,107,0,0.25);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.2);
        }
        .hero-title em { font-style: normal; color: var(--accent); }
        .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.8);
            max-width: 540px;
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border: none;
            padding: 16px 44px;
            border-radius: var(--radius-md);
            font-size: 1.05rem;
            font-weight: 600;
            box-shadow: 0 8px 24px rgba(255,107,0,0.35);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-btn-primary:hover {
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(255,107,0,0.45);
        }
        .hero-btn-secondary {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.3);
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-size: 1.05rem;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(255,107,0,0.08);
        }
        .hero-image-wrap {
            position: relative;
            z-index: 2;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            border: 1px solid rgba(255,255,255,0.08);
        }
        .hero-image-wrap img { width: 100%; height: auto; object-fit: cover; aspect-ratio: 16/10; }
        @media (max-width: 991px) {
            .hero-section { padding: 120px 0 60px; min-height: auto; text-align: center; }
            .hero-title { font-size: 2.2rem; }
            .hero-subtitle { max-width: 100%; margin-left: auto; margin-right: auto; }
            .hero-actions { justify-content: center; }
            .hero-image-wrap { margin-top: 40px; }
        }
        @media (max-width: 576px) {
            .hero-title { font-size: 1.75rem; }
            .hero-subtitle { font-size: 1rem; }
            .hero-btn-primary, .hero-btn-secondary { width: 100%; justify-content: center; }
        }

        /* ===== Section Titles ===== */
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .section-title { font-size: 1.75rem; }
        }

        /* ===== Value Cards ===== */
        .value-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            text-align: center;
        }
        .value-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: var(--primary-light);
        }
        .value-card .icon-box {
            width: 72px;
            height: 72px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 2rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .value-card:hover .icon-box { background: var(--primary); color: #fff; }
        .value-card h4 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
        .value-card p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== Feature Blocks ===== */
        .feature-block {
            padding: 60px 0;
        }
        .feature-block:nth-child(even) { background: var(--bg-warm); }
        .feature-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .feature-image-wrap img { width: 100%; height: auto; object-fit: cover; aspect-ratio: 4/3; }
        .feature-list { margin-top: 12px; }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 10px 0;
            font-size: 1rem;
            color: var(--text-body);
            border-bottom: 1px solid rgba(0,0,0,0.04);
        }
        .feature-list li:last-child { border-bottom: none; }
        .feature-list li i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        @media (max-width: 991px) {
            .feature-block .row { flex-direction: column-reverse; }
            .feature-block .row .order-lg-2 { flex-direction: column; }
            .feature-image-wrap { margin-top: 32px; }
        }

        /* ===== Scene Cards ===== */
        .scene-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .scene-card .card-img-top {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .scene-card:hover .card-img-top { transform: scale(1.05); }
        .scene-card .card-body { padding: 24px; }
        .scene-card .card-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
        .scene-card .card-tags .tag {
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .scene-card h5 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
        .scene-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== Stats / Success ===== */
        .stats-section {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .stat-item { text-align: center; padding: 20px; }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-label { font-size: 1rem; color: rgba(255,255,255,0.7); font-weight: 500; }
        @media (max-width: 768px) {
            .stat-number { font-size: 2.2rem; }
        }

        /* ===== Pricing ===== */
        .pricing-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            position: relative;
            text-align: center;
        }
        .pricing-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .pricing-card.featured {
            border-color: var(--primary);
            box-shadow: 0 8px 32px rgba(255,107,0,0.18);
            transform: scale(1.02);
        }
        .pricing-card.featured:hover { transform: scale(1.02) translateY(-4px); }
        .pricing-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 20px;
            border-radius: 50px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .pricing-card h4 { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
        .pricing-price {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 4px;
        }
        .pricing-price span { font-size: 1rem; font-weight: 400; color: var(--text-muted); }
        .pricing-desc { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 24px; }
        .pricing-features { text-align: left; margin-bottom: 28px; }
        .pricing-features li {
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            border-bottom: 1px solid rgba(0,0,0,0.04);
        }
        .pricing-features li:last-child { border-bottom: none; }
        .pricing-features li i { color: var(--primary); font-size: 0.9rem; width: 18px; }
        .pricing-btn {
            display: block;
            width: 100%;
            padding: 14px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--primary);
            background: transparent;
            color: var(--primary);
            transition: var(--transition);
            text-align: center;
        }
        .pricing-btn:hover { background: var(--primary); color: #fff; }
        .pricing-btn.primary-btn {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255,107,0,0.25);
        }
        .pricing-btn.primary-btn:hover { background: var(--primary-dark); }
        @media (max-width: 991px) {
            .pricing-card.featured { transform: none; }
            .pricing-card.featured:hover { transform: translateY(-4px); }
        }

        /* ===== Latest Posts (CMS) ===== */
        .post-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .post-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .post-card .card-img-top {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .post-card .card-body { padding: 20px 24px 24px; }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .post-card .post-meta .post-cat {
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.7rem;
        }
        .post-card h5 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
        .post-card h5 a { color: var(--text-dark); }
        .post-card h5 a:hover { color: var(--primary); }
        .post-card .post-excerpt {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .empty-state {
            background: var(--bg-warm);
            border-radius: var(--radius-lg);
            padding: 60px 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 1.05rem;
        }
        .empty-state i { font-size: 2.5rem; color: var(--text-light); margin-bottom: 16px; display: block; }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--bg-white);
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question .faq-icon { transition: var(--transition); font-size: 1.1rem; color: var(--primary); }
        .faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary), #0D2E4E);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.05;
            pointer-events: none;
        }
        .cta-title { font-size: 2.2rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .cta-text { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto 32px; }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            padding: 16px 48px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1.1rem;
            box-shadow: 0 8px 28px rgba(255,107,0,0.35);
            transition: var(--transition);
            border: none;
        }
        .cta-btn:hover { color: #fff; transform: translateY(-3px); box-shadow: 0 12px 36px rgba(255,107,0,0.5); }
        @media (max-width: 768px) {
            .cta-title { font-size: 1.75rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 24px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .site-footer a { color: rgba(255,255,255,0.6); }
        .site-footer a:hover { color: var(--accent); }
        .footer-links li { margin-bottom: 10px; }
        .footer-links li a { font-size: 0.9rem; }
        .footer-brand { font-size: 1.4rem; font-weight: 800; color: #fff; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
        .footer-brand .brand-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
        }
        .footer-desc { font-size: 0.9rem; color: rgba(255,255,255,0.5); max-width: 300px; margin-bottom: 20px; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            margin-top: 40px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            text-align: center;
        }

        /* ===== Buttons & Badges ===== */
        .btn-custom-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-custom-primary:hover { background: var(--primary-dark); color: #fff; box-shadow: var(--shadow-md); transform: translateY(-2px); }
        .btn-custom-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 10px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-custom-outline:hover { background: var(--primary); color: #fff; }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 576px) {
            .hero-title { font-size: 1.5rem; }
            .value-card { padding: 24px 16px; }
            .pricing-card { padding: 28px 20px; }
            .section-title { font-size: 1.5rem; }
        }

        /* ===== Accessibility ===== */
        :focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        .btn:focus, .navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(255,107,0,0.25); }

/* roulang page: article */
:root {
            --primary: #FF6B00;
            --primary-dark: #E05A00;
            --primary-light: #FFE8D0;
            --secondary: #0A2540;
            --secondary-light: #1A3A5C;
            --bg-light: #F5F5F5;
            --bg-white: #FFFFFF;
            --text-dark: #333333;
            --text-muted: #666666;
            --text-light: #999999;
            --border-color: #E0E0E0;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
            --transition: all 0.3s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
        }

        * { box-sizing: border-box; }
        body {
            font-family: var(--font-family);
            color: var(--text-dark);
            background: var(--bg-white);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a { text-decoration: none; color: var(--primary); transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        /* Header & Nav */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0;
            background: rgba(255,255,255,0.98);
            box-shadow: 0 1px 0 rgba(0,0,0,0.06);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header .navbar { padding: 12px 0; }
        .navbar-brand { display: flex; align-items: center; gap: 10px; }
        .brand-icon {
            display: inline-flex; align-items: center; justify-content: center;
            width: 36px; height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff; font-weight: 800; font-size: 18px;
            border-radius: 8px;
        }
        .brand-text { font-weight: 700; font-size: 20px; color: var(--secondary); letter-spacing: 1px; }
        .nav-link {
            color: var(--text-dark) !important;
            font-weight: 500; font-size: 15px;
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-link:hover { color: var(--primary) !important; background: var(--primary-light); }
        .nav-link.active { color: var(--primary) !important; background: var(--primary-light); font-weight: 600; }
        .nav-cta-btn {
            background: var(--primary) !important;
            color: #fff !important;
            border-radius: var(--radius-md);
            padding: 10px 28px !important;
            font-weight: 600;
            border: none;
        }
        .nav-cta-btn:hover { background: var(--primary-dark) !important; color: #fff !important; transform: scale(1.02); }
        .navbar-toggler { border: none; background: transparent; font-size: 24px; color: var(--secondary); padding: 4px; }
        .navbar-toggler:focus { box-shadow: none; }

        /* Article Page */
        .article-page { padding-top: 100px; padding-bottom: 60px; background: var(--bg-light); min-height: 100vh; }
        .article-breadcrumb {
            padding: 20px 0 10px;
            font-size: 14px;
            color: var(--text-light);
        }
        .article-breadcrumb a { color: var(--text-muted); }
        .article-breadcrumb a:hover { color: var(--primary); }
        .article-breadcrumb .separator { margin: 0 10px; color: #ccc; }
        .article-breadcrumb .current { color: var(--text-dark); font-weight: 500; }

        .article-header-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            box-shadow: var(--shadow-md);
            margin-bottom: 32px;
        }
        .article-header-card h1 {
            font-size: 32px; font-weight: 700;
            color: var(--secondary);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .article-meta {
            display: flex; flex-wrap: wrap; gap: 20px;
            font-size: 14px; color: var(--text-muted);
            margin-bottom: 8px;
        }
        .article-meta span { display: inline-flex; align-items: center; gap: 6px; }
        .article-meta .category-badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
        }

        .article-body-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-md);
            margin-bottom: 32px;
        }
        .article-body {
            max-width: 720px; margin: 0 auto;
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-dark);
        }
        .article-body h2 {
            font-size: 26px; font-weight: 700;
            color: var(--secondary);
            margin-top: 48px; margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
        }
        .article-body h3 {
            font-size: 22px; font-weight: 600;
            color: var(--secondary);
            margin-top: 36px; margin-bottom: 16px;
        }
        .article-body p { margin-bottom: 24px; }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 32px auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 20px 24px;
            margin: 32px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: normal;
            color: var(--text-dark);
        }
        .article-body blockquote p { margin-bottom: 0; }
        .article-body ul, .article-body ol { margin-bottom: 24px; padding-left: 24px; }
        .article-body li { margin-bottom: 8px; }

        .article-not-found {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 80px 48px;
            box-shadow: var(--shadow-md);
            text-align: center;
        }
        .article-not-found .icon { font-size: 56px; color: var(--text-light); margin-bottom: 20px; }
        .article-not-found h3 { font-size: 24px; color: var(--text-dark); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found .btn-back {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
        }
        .article-not-found .btn-back:hover { background: var(--primary-dark); color: #fff; }

        /* Related Articles */
        .related-section { margin-top: 48px; }
        .related-section h3 {
            font-size: 24px; font-weight: 700;
            color: var(--secondary);
            margin-bottom: 24px;
            text-align: center;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }
        .related-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; }
        .related-card-body { padding: 20px; }
        .related-card-body h5 { font-size: 16px; font-weight: 600; color: var(--secondary); margin-bottom: 8px; }
        .related-card-body p { font-size: 14px; color: var(--text-muted); margin-bottom: 0; }
        .related-card-body .date { font-size: 12px; color: var(--text-light); margin-top: 8px; }

        .back-to-list-wrap { text-align: center; margin-top: 40px; }
        .btn-back-list {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 12px 36px;
            border-radius: var(--radius-md);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-back-list:hover { background: var(--primary); color: #fff; }

        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.85);
            padding: 60px 0 32px;
        }
        .footer-brand { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .footer-brand .brand-icon { width: 40px; height: 40px; font-size: 20px; }
        .footer-desc { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.7; max-width: 300px; }
        .footer-social { display: flex; gap: 16px; margin-top: 20px; }
        .footer-social a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 40px; height: 40px;
            background: rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.7);
            border-radius: 50%;
            font-size: 18px;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .site-footer h5 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 16px; }
        .footer-links { list-style: none; padding: 0; margin: 0; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { color: rgba(255,255,255,0.6); font-size: 14px; transition: var(--transition); }
        .footer-links a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 14px;
            color: rgba(255,255,255,0.4);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .navbar-nav { margin-top: 16px; }
            .nav-link { padding: 10px 0 !important; }
            .nav-cta-btn { margin-top: 12px; text-align: center; }
            .article-header-card { padding: 32px 28px; }
            .article-header-card h1 { font-size: 26px; }
            .article-body-card { padding: 28px 24px; }
            .article-body { font-size: 16px; }
        }
        @media (max-width: 768px) {
            .article-page { padding-top: 80px; }
            .article-header-card { padding: 24px 20px; }
            .article-header-card h1 { font-size: 22px; }
            .article-meta { font-size: 13px; gap: 12px; }
            .article-body-card { padding: 20px 16px; }
            .article-body { font-size: 15px; }
            .article-body h2 { font-size: 20px; margin-top: 32px; }
            .article-body h3 { font-size: 18px; }
            .related-card img { height: 140px; }
        }
        @media (max-width: 576px) {
            .article-header-card { padding: 20px 16px; }
            .article-header-card h1 { font-size: 19px; }
            .article-body-card { padding: 16px 12px; }
            .article-body { font-size: 15px; line-height: 1.8; }
            .article-body h2 { font-size: 18px; }
            .article-body h3 { font-size: 16px; }
            .article-meta { flex-direction: column; gap: 8px; }
            .footer-brand { font-size: 18px; }
            .site-footer { padding: 40px 0 24px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #FF6B00;
            --primary-dark: #E05E00;
            --primary-light: #FFE8D0;
            --secondary: #0A2540;
            --secondary-light: #1A3A5C;
            --bg-warm: #F5F5F5;
            --bg-card: #FFFFFF;
            --text-dark: #333333;
            --text-muted: #777777;
            --text-light: #FFFFFF;
            --border-color: #E0E0E0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.14);
            --transition: all 0.3s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-dark);
            background: var(--bg-warm);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
            transition: var(--transition);
        }

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

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--secondary);
            letter-spacing: 0.5px;
        }

        .site-header .navbar-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            font-weight: 800;
        }

        .site-header .navbar-brand .brand-text {
            color: var(--secondary);
        }

        .site-header .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-dark);
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .site-header .nav-link:hover {
            color: var(--primary);
            background: rgba(255, 107, 0, 0.06);
        }

        .site-header .nav-link.active {
            color: var(--primary);
            background: rgba(255, 107, 0, 0.10);
            font-weight: 600;
        }

        .site-header .nav-cta-btn {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 24px !important;
            border-radius: var(--radius-md);
            font-weight: 600;
            transition: var(--transition);
        }

        .site-header .nav-cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 107, 0, 0.3);
        }

        .navbar-toggler {
            border: none;
            background: transparent;
            font-size: 1.4rem;
            color: var(--secondary);
            padding: 4px 8px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* ===== Hero ===== */
        .category-hero {
            padding: 140px 0 80px;
            background: linear-gradient(145deg, var(--secondary) 0%, #0D2E4A 60%, rgba(255, 107, 0, 0.15) 100%);
            position: relative;
            overflow: hidden;
            min-height: 480px;
            display: flex;
            align-items: center;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 2;
        }

        .category-hero .breadcrumb-custom {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
        }
        .category-hero .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.65);
        }
        .category-hero .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .category-hero .breadcrumb-custom span {
            color: rgba(255, 255, 255, 0.8);
        }

        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .category-hero .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 620px;
            margin-bottom: 32px;
        }

        .category-hero .hero-cta-group .btn {
            padding: 14px 40px;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .category-hero .hero-cta-group .btn-primary {
            background: var(--primary);
            border: none;
            color: #fff;
        }
        .category-hero .hero-cta-group .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 0, 0.35);
        }

        .category-hero .hero-cta-group .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: transparent;
        }
        .category-hero .hero-cta-group .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-2px);
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 107, 0, 0.20);
            color: var(--primary-light);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 107, 0, 0.25);
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .section-bg-light {
            background: var(--bg-warm);
        }

        .section-bg-white {
            background: #fff;
        }

        .section-bg-dark {
            background: var(--secondary);
            color: var(--text-light);
        }
        .section-bg-dark .section-title {
            color: #fff;
        }
        .section-bg-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border: none;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }

        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .card-custom .card-body {
            padding: 24px;
        }

        .card-custom .card-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .card-custom .card-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 10px;
        }

        .card-custom .card-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .card-custom .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            margin-bottom: 12px;
        }

        .card-img-top-custom {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        /* ===== 按钮通用 ===== */
        .btn-roulang {
            padding: 12px 32px;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: var(--transition);
            font-size: 1rem;
        }

        .btn-roulang-primary {
            background: var(--primary);
            border: none;
            color: #fff;
        }
        .btn-roulang-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 0, 0.3);
            color: #fff;
        }

        .btn-roulang-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-roulang-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 数据统计块 ===== */
        .stat-block {
            text-align: center;
            padding: 24px 16px;
        }

        .stat-block .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-block .stat-label {
            font-size: 1rem;
            color: var(--text-muted);
            margin-top: 8px;
        }

        .section-bg-dark .stat-block .stat-number {
            color: #fff;
        }
        .section-bg-dark .stat-block .stat-label {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== 图文交替 ===== */
        .feature-row {
            align-items: center;
            margin-bottom: 60px;
        }

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

        .feature-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .feature-image-wrap img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: var(--transition);
        }

        .feature-image-wrap:hover img {
            transform: scale(1.03);
        }

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

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 1rem;
            color: var(--text-dark);
        }

        .feature-list li i {
            color: var(--primary);
            font-size: 1.2rem;
            margin-top: 2px;
            flex-shrink: 0;
        }

        /* ===== 场景卡片 ===== */
        .scene-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }

        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .scene-card .scene-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: var(--transition);
        }

        .scene-card:hover .scene-img {
            transform: scale(1.05);
        }

        .scene-card .scene-body {
            padding: 20px;
        }

        .scene-card .scene-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .scene-card .scene-desc {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .scene-card .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 12px;
        }

        .scene-card .scene-tags .tag {
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
        }

        /* ===== 流程步骤 ===== */
        .step-item {
            text-align: center;
            padding: 24px 16px;
            position: relative;
        }

        .step-item .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .step-item .step-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .step-item .step-desc {
            font-size: 0.92rem;
            color: var(--text-muted);
            max-width: 240px;
            margin: 0 auto;
        }

        .step-connector {
            display: none;
        }

        @media (min-width: 768px) {
            .step-connector {
                display: block;
                position: absolute;
                top: 44px;
                right: -20px;
                width: 40px;
                height: 2px;
                background: var(--border-color);
            }
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

        .faq-question:focus {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }

        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0D2E4A 50%, rgba(255, 107, 0, 0.20) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.10;
        }

        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .cta-section .btn-roulang-primary {
            padding: 16px 48px;
            font-size: 1.1rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer .footer-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 800;
        }

        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
            line-height: 1.7;
        }

        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }

        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .site-footer h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .category-hero .hero-sub {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section-padding {
                padding: 60px 0;
            }
            .feature-image-wrap img {
                height: 240px;
            }
            .stat-block .stat-number {
                font-size: 2.2rem;
            }
            .site-header .navbar-collapse {
                background: rgba(255, 255, 255, 0.98);
                padding: 16px;
                border-radius: var(--radius-md);
                margin-top: 8px;
                box-shadow: var(--shadow-md);
            }
        }

        @media (max-width: 767px) {
            .category-hero {
                padding: 120px 0 60px;
                min-height: auto;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-sub {
                font-size: 0.95rem;
            }
            .category-hero .hero-cta-group .btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .feature-row {
                margin-bottom: 40px;
            }
            .feature-image-wrap img {
                height: 200px;
            }
            .stat-block .stat-number {
                font-size: 1.8rem;
            }
            .step-item {
                padding: 16px 8px;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
            .site-footer .footer-brand {
                font-size: 1.1rem;
            }
            .site-header .navbar-brand {
                font-size: 1.1rem;
            }
            .site-header .navbar-brand .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero .hero-sub {
                font-size: 0.9rem;
            }
            .category-hero .hero-cta-group .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
                display: block;
                width: 100%;
                margin-bottom: 8px;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .stat-block .stat-number {
                font-size: 1.5rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.88rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-roulang-primary {
                padding: 14px 32px;
                font-size: 1rem;
                display: block;
                width: 100%;
            }
        }

        /* ===== 工具类 ===== */
        .text-primary-custom {
            color: var(--primary);
        }
        .bg-primary-light {
            background: var(--primary-light);
        }
        .rounded-lg {
            border-radius: var(--radius-lg);
        }
        .shadow-hover:hover {
            box-shadow: var(--shadow-md);
        }

/* roulang page: category2 */
/* ========== Design Variables ========== */
        :root {
            --primary-orange: #FF6B00;
            --primary-orange-light: #FFE8D0;
            --primary-orange-hover: #E86000;
            --primary-orange-active: #CC5500;
            --deep-blue: #0A2540;
            --deep-blue-light: #1A3A5C;
            --warm-gray: #F5F5F5;
            --warm-gray-dark: #E8E8E8;
            --white: #FFFFFF;
            --text-dark: #222222;
            --text-body: #333333;
            --text-muted: #777777;
            --text-light: #AAAAAA;
            --border-color: #E0E0E0;
            --card-shadow: 0 4px 12px rgba(0,0,0,0.08);
            --card-shadow-hover: 0 8px 24px rgba(0,0,0,0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition-base: all 0.3s ease;
            --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-primary);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-body);
            background: var(--white);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary-orange);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--primary-orange-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--primary-orange);
            outline-offset: 2px;
        }

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

        ul,
        ol {
            padding-left: 1.25rem;
        }

        /* ========== Typography ========== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
            margin-top: 0;
        }

        h1 {
            font-size: 2.5rem;
            letter-spacing: -0.01em;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.75rem;
        }
        h4 {
            font-size: 1.375rem;
        }
        h5 {
            font-size: 1.125rem;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 1.75rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.375rem;
            }
            h4 {
                font-size: 1.125rem;
            }
            h5 {
                font-size: 1rem;
            }
        }

        /* ========== Utility ========== */
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 40px 0;
            }
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-title p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }

        .btn-main {
            display: inline-block;
            background: var(--primary-orange);
            color: var(--white) !important;
            font-weight: 500;
            padding: 12px 32px;
            border-radius: var(--radius-md);
            border: none;
            transition: var(--transition-base);
            cursor: pointer;
            text-align: center;
            font-size: 1rem;
            line-height: 1.4;
        }
        .btn-main:hover {
            background: var(--primary-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 0, 0.35);
        }
        .btn-main:active {
            background: var(--primary-orange-active);
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(255, 107, 0, 0.25);
        }
        .btn-main:focus-visible {
            outline: 2px solid var(--primary-orange);
            outline-offset: 3px;
        }

        .btn-outline-main {
            display: inline-block;
            background: transparent;
            color: var(--primary-orange) !important;
            font-weight: 500;
            padding: 12px 32px;
            border-radius: var(--radius-md);
            border: 2px solid var(--primary-orange);
            transition: var(--transition-base);
            cursor: pointer;
            text-align: center;
            font-size: 1rem;
            line-height: 1.4;
        }
        .btn-outline-main:hover {
            background: var(--primary-orange);
            color: var(--white) !important;
            transform: translateY(-2px);
        }
        .btn-outline-main:active {
            transform: translateY(0);
        }

        .card-custom {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--card-shadow);
            padding: 24px;
            transition: var(--transition-base);
            border: 1px solid rgba(0,0,0,0.04);
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }

        .badge-tag {
            display: inline-block;
            background: var(--primary-orange-light);
            color: var(--primary-orange);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            border: none;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: transparent;
            transition: var(--transition-base);
            padding: 8px 0;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.97);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
            backdrop-filter: blur(8px);
        }
        .site-header .navbar {
            padding: 0;
        }
        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--white) !important;
            font-weight: 700;
            font-size: 1.35rem;
            padding: 8px 0;
        }
        .site-header.scrolled .navbar-brand {
            color: var(--text-dark) !important;
        }
        .site-header .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary-orange);
            color: var(--white);
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.2rem;
        }
        .site-header .brand-text {
            letter-spacing: 0.02em;
        }

        .site-header .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.9) !important;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition-base);
            position: relative;
            font-size: 0.95rem;
        }
        .site-header.scrolled .navbar-nav .nav-link {
            color: var(--text-body) !important;
        }
        .site-header .navbar-nav .nav-link:hover,
        .site-header .navbar-nav .nav-link:focus {
            color: var(--white) !important;
            background: rgba(255, 255, 255, 0.1);
        }
        .site-header.scrolled .navbar-nav .nav-link:hover,
        .site-header.scrolled .navbar-nav .nav-link:focus {
            color: var(--primary-orange) !important;
            background: rgba(255, 107, 0, 0.08);
        }
        .site-header .navbar-nav .nav-link.active {
            color: var(--primary-orange) !important;
            background: rgba(255, 107, 0, 0.12);
        }
        .site-header.scrolled .navbar-nav .nav-link.active {
            color: var(--primary-orange) !important;
            background: rgba(255, 107, 0, 0.12);
        }

        .site-header .nav-cta-btn {
            background: var(--primary-orange) !important;
            color: var(--white) !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-md);
            font-weight: 600;
            border: none;
        }
        .site-header .nav-cta-btn:hover {
            background: var(--primary-orange-hover) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(255, 107, 0, 0.3);
        }

        .site-header .navbar-toggler {
            border: none;
            color: var(--white);
            font-size: 1.4rem;
            padding: 4px 8px;
        }
        .site-header.scrolled .navbar-toggler {
            color: var(--text-dark);
        }
        .site-header .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary-orange);
        }

        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: var(--deep-blue);
                padding: 20px;
                border-radius: var(--radius-md);
                margin-top: 12px;
                max-height: 90vh;
                overflow-y: auto;
            }
            .site-header.scrolled .navbar-collapse {
                background: var(--white);
                box-shadow: var(--card-shadow-hover);
            }
            .site-header .navbar-nav .nav-link {
                color: rgba(255, 255, 255, 0.9) !important;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .site-header.scrolled .navbar-nav .nav-link {
                color: var(--text-body) !important;
            }
            .site-header .navbar-nav .nav-link:hover {
                background: rgba(255, 255, 255, 0.1);
            }
            .site-header.scrolled .navbar-nav .nav-link:hover {
                background: rgba(255, 107, 0, 0.08);
            }
            .site-header .nav-cta-btn {
                margin-top: 8px;
                text-align: center;
            }
        }

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            background: var(--deep-blue);
            min-height: 480px;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, var(--deep-blue) 40%, rgba(255, 107, 0, 0.25) 100%);
            z-index: 1;
        }
        .hero-section .hero-bg-img {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            object-fit: cover;
            width: 100%;
            height: 100%;
            opacity: 0.2;
            z-index: 0;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }
        .hero-section .hero-content {
            max-width: 700px;
        }
        .hero-section .hero-badge {
            display: inline-block;
            background: rgba(255, 107, 0, 0.2);
            color: var(--primary-orange-light);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 20px;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 107, 0, 0.3);
        }
        .hero-section h1 {
            color: var(--white);
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .hero-section .hero-sub {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.15rem;
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 600px;
        }
        .hero-section .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-section .btn-hero {
            background: var(--primary-orange);
            color: var(--white) !important;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition-base);
        }
        .hero-section .btn-hero:hover {
            background: var(--primary-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 0, 0.4);
        }
        .hero-section .btn-hero-outline {
            background: transparent;
            color: var(--white) !important;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: var(--transition-base);
        }
        .hero-section .btn-hero-outline:hover {
            border-color: var(--primary-orange);
            background: rgba(255, 107, 0, 0.15);
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 380px;
                padding: 100px 0 60px;
            }
            .hero-section h1 {
                font-size: 1.9rem;
            }
            .hero-section .hero-sub {
                font-size: 1rem;
            }
            .hero-section .hero-actions {
                flex-direction: column;
            }
            .hero-section .btn-hero,
            .hero-section .btn-hero-outline {
                width: 100%;
                text-align: center;
            }
        }

        /* ========== Stats Bar ========== */
        .stats-bar {
            background: var(--white);
            padding: 24px 0;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.04);
            position: relative;
            z-index: 3;
            margin-top: -40px;
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        }
        .stats-bar .stat-item {
            text-align: center;
            padding: 12px 8px;
        }
        .stats-bar .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-orange);
            line-height: 1.2;
        }
        .stats-bar .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-bar {
                margin-top: 0;
                border-radius: 0;
            }
            .stats-bar .stat-number {
                font-size: 1.5rem;
            }
        }

        /* ========== Guide Intro ========== */
        .guide-intro {
            background: var(--warm-gray);
        }
        .guide-intro .intro-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--card-shadow);
            height: 100%;
            transition: var(--transition-base);
            border-top: 4px solid var(--primary-orange);
        }
        .guide-intro .intro-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }
        .guide-intro .intro-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--primary-orange-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 1.6rem;
            color: var(--primary-orange);
        }
        .guide-intro .intro-card h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .guide-intro .intro-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 0;
        }

        /* ========== Step Flow ========== */
        .step-flow {
            background: var(--white);
        }
        .step-flow .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px 0;
            border-bottom: 1px solid var(--warm-gray-dark);
        }
        .step-flow .step-item:last-child {
            border-bottom: none;
        }
        .step-flow .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-orange);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
        }
        .step-flow .step-content h4 {
            font-size: 1.1rem;
            margin-bottom: 4px;
        }
        .step-flow .step-content p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .step-flow .step-item {
                flex-direction: column;
                gap: 12px;
            }
        }

        /* ========== Scenario Cards ========== */
        .scenario-section {
            background: var(--warm-gray);
        }
        .scenario-section .scenario-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition-base);
            height: 100%;
        }
        .scenario-section .scenario-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }
        .scenario-section .scenario-card .card-img {
            height: 180px;
            overflow: hidden;
        }
        .scenario-section .scenario-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scenario-section .scenario-card:hover .card-img img {
            transform: scale(1.08);
        }
        .scenario-section .scenario-card .card-body {
            padding: 20px;
        }
        .scenario-section .scenario-card .card-body h5 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .scenario-section .scenario-card .card-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 12px;
        }
        .scenario-section .scenario-card .card-body .tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .scenario-section .scenario-card .card-body .tags .tag {
            background: var(--primary-orange-light);
            color: var(--primary-orange);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 12px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--white);
        }
        .faq-section .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-section .accordion-button {
            font-weight: 600;
            color: var(--text-dark);
            background: var(--white);
            padding: 18px 24px;
            font-size: 1rem;
            border: none;
            box-shadow: none;
        }
        .faq-section .accordion-button:not(.collapsed) {
            background: var(--primary-orange-light);
            color: var(--primary-orange);
            font-weight: 700;
        }
        .faq-section .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23FF6B00'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
            transition: var(--transition-base);
        }
        .faq-section .accordion-button:not(.collapsed)::after {
            transform: rotate(-180deg);
        }
        .faq-section .accordion-body {
            padding: 18px 24px 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-section .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--primary-orange);
            outline-offset: -2px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--deep-blue) 0%, #0F2A44 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 107, 0, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section h2 {
            color: var(--white);
            font-size: 2.2rem;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-cta-main {
            background: var(--primary-orange);
            color: var(--white) !important;
            padding: 14px 40px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition-base);
        }
        .cta-section .btn-cta-main:hover {
            background: var(--primary-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 107, 0, 0.4);
        }
        .cta-section .btn-cta-outline {
            background: transparent;
            color: var(--white) !important;
            padding: 14px 40px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition-base);
        }
        .cta-section .btn-cta-outline:hover {
            border-color: var(--primary-orange);
            background: rgba(255, 107, 0, 0.15);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .cta-btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-section .btn-cta-main,
            .cta-section .btn-cta-outline {
                width: 100%;
                max-width: 280px;
            }
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #06182B;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary-orange);
            color: var(--white);
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.1rem;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 340px;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 20px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: var(--transition-base);
        }
        .site-footer .footer-social a:hover {
            background: var(--primary-orange);
            color: var(--white);
            transform: translateY(-2px);
        }
        .site-footer h5 {
            color: var(--white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            transition: var(--transition-base);
        }
        .site-footer .footer-links a:hover {
            color: var(--primary-orange);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 20px;
            }
            .site-footer .footer-brand {
                justify-content: center;
            }
            .site-footer .footer-desc {
                text-align: center;
                margin-left: auto;
                margin-right: auto;
            }
            .site-footer .footer-social {
                justify-content: center;
            }
            .site-footer h5 {
                text-align: center;
                margin-top: 20px;
            }
            .site-footer .footer-links {
                text-align: center;
            }
        }

        /* ========== Extra ========== */
        .mb-32 {
            margin-bottom: 32px;
        }
        .mt-32 {
            margin-top: 32px;
        }

        .text-primary-orange {
            color: var(--primary-orange);
        }
        .bg-warm-gray {
            background: var(--warm-gray);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            padding: 12px 0;
            background: var(--warm-gray);
            font-size: 0.85rem;
        }
        .breadcrumb-bar .breadcrumb {
            margin: 0;
            background: transparent;
        }
        .breadcrumb-bar .breadcrumb-item a {
            color: var(--text-muted);
        }
        .breadcrumb-bar .breadcrumb-item.active {
            color: var(--primary-orange);
        }

        /* Responsive fine-tune */
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-section h1 {
                font-size: 1.6rem;
            }
            .stats-bar .stat-number {
                font-size: 1.3rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #FF6B00;
            --primary-dark: #E05E00;
            --primary-light: #FFE8D0;
            --deep-blue: #0A2540;
            --deep-blue-light: #1A3A5C;
            --bg-warm: #F5F5F5;
            --text-dark: #333333;
            --text-muted: #6c757d;
            --border-color: #E0E0E0;
            --card-radius: 16px;
            --btn-radius: 12px;
            --input-radius: 8px;
            --shadow-sm: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.15);
            --transition-base: all 0.3s ease;
        }
        * { box-sizing: border-box; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-dark);
            background: #FFFFFF;
            margin: 0;
            padding-top: 76px;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition-base); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; }
        .container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
        /* Header / Nav */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1050;
            background: rgba(255,255,255,0.98);
            box-shadow: 0 2px 20px rgba(0,0,0,0.06);
            backdrop-filter: blur(8px);
            transition: var(--transition-base);
        }
        .site-header .navbar { padding: 12px 0; }
        .navbar-brand {
            display: flex; align-items: center; gap: 10px;
            font-weight: 700; font-size: 1.4rem; color: var(--deep-blue) !important;
        }
        .brand-icon {
            display: inline-flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #FF8C38);
            color: #fff; font-weight: 800; font-size: 1.1rem;
        }
        .brand-text { color: var(--deep-blue); }
        .nav-link {
            font-weight: 500; color: var(--text-dark) !important;
            padding: 8px 16px !important; border-radius: 8px;
            transition: var(--transition-base);
            position: relative;
        }
        .nav-link:hover, .nav-link.active { color: var(--primary) !important; background: var(--primary-light); }
        .nav-link.active::after {
            content: ''; position: absolute; bottom: 2px; left: 16px; right: 16px;
            height: 3px; background: var(--primary); border-radius: 2px;
        }
        .nav-cta-btn {
            display: inline-block; padding: 10px 28px !important;
            background: var(--primary); color: #fff !important; border-radius: var(--btn-radius);
            font-weight: 600; border: none; transition: var(--transition-base);
        }
        .nav-cta-btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,107,0,0.35); }
        .navbar-toggler { border: none; font-size: 1.4rem; color: var(--deep-blue); padding: 4px 8px; }
        .navbar-toggler:focus { box-shadow: none; }
        /* Hero */
        .help-hero {
            position: relative;
            background: linear-gradient(135deg, var(--deep-blue) 0%, #0D2F4F 60%, #1A3A5C 100%);
            padding: 80px 0 100px;
            overflow: hidden;
            min-height: 480px;
            display: flex; align-items: center;
        }
        .help-hero::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.2; mix-blend-mode: overlay;
        }
        .help-hero .hero-badge {
            display: inline-block; background: rgba(255,107,0,0.2); color: var(--primary);
            padding: 6px 18px; border-radius: 30px; font-size: 0.9rem; font-weight: 600;
            margin-bottom: 20px; border: 1px solid rgba(255,107,0,0.3);
        }
        .help-hero h1 {
            font-size: 2.8rem; font-weight: 800; color: #fff;
            line-height: 1.2; margin-bottom: 20px;
            position: relative; z-index: 2;
        }
        .help-hero h1 span { color: var(--primary); }
        .help-hero p.lead {
            font-size: 1.2rem; color: rgba(255,255,255,0.8);
            max-width: 600px; margin-bottom: 32px; position: relative; z-index: 2;
        }
        .help-hero .hero-stats {
            display: flex; gap: 40px; flex-wrap: wrap; margin-top: 20px;
            position: relative; z-index: 2;
        }
        .help-hero .hero-stats .stat-item { text-align: center; }
        .help-hero .hero-stats .stat-number {
            font-size: 1.8rem; font-weight: 800; color: var(--primary);
            display: block; line-height: 1.2;
        }
        .help-hero .hero-stats .stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.6); }
        .help-hero .hero-img-wrap {
            position: relative; z-index: 2; text-align: center;
        }
        .help-hero .hero-img-wrap img {
            max-height: 360px; border-radius: var(--card-radius);
            box-shadow: 0 20px 60px rgba(0,0,0,0.4);
        }
        @media (max-width: 991.98px) {
            .help-hero { padding: 60px 0 70px; text-align: center; min-height: auto; }
            .help-hero h1 { font-size: 2rem; }
            .help-hero p.lead { margin-left: auto; margin-right: auto; }
            .help-hero .hero-stats { justify-content: center; }
            .help-hero .hero-img-wrap { margin-top: 40px; }
            .help-hero .hero-img-wrap img { max-height: 260px; }
        }
        @media (max-width: 575.98px) {
            .help-hero h1 { font-size: 1.6rem; }
            .help-hero .hero-stats { gap: 20px; }
            .help-hero .hero-stats .stat-number { font-size: 1.4rem; }
        }
        /* Section global */
        .section-padding { padding: 80px 0; }
        .section-title { font-size: 2rem; font-weight: 700; color: var(--deep-blue); margin-bottom: 12px; }
        .section-subtitle { font-size: 1.05rem; color: var(--text-muted); max-width: 640px; margin-bottom: 48px; }
        .section-title-center { text-align: center; }
        .section-subtitle-center { margin-left: auto; margin-right: auto; text-align: center; }
        /* Help Categories */
        .help-categories { background: var(--bg-warm); }
        .help-cat-card {
            background: #fff; border-radius: var(--card-radius); padding: 32px 24px;
            text-align: center; box-shadow: var(--shadow-sm);
            transition: var(--transition-base); height: 100%;
            border: 1px solid transparent;
        }
        .help-cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--primary-light); }
        .help-cat-card .cat-icon {
            width: 64px; height: 64px; border-radius: 50%;
            background: var(--primary-light); color: var(--primary);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.6rem; margin: 0 auto 20px; transition: var(--transition-base);
        }
        .help-cat-card:hover .cat-icon { background: var(--primary); color: #fff; }
        .help-cat-card h4 { font-size: 1.2rem; font-weight: 700; color: var(--deep-blue); margin-bottom: 10px; }
        .help-cat-card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 16px; }
        .help-cat-card .cat-tag {
            display: inline-block; background: var(--primary-light); color: var(--primary);
            padding: 4px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 600;
        }
        /* FAQ */
        .faq-section { background: #fff; }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color); border-radius: 12px !important;
            margin-bottom: 12px; overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-weight: 600; color: var(--deep-blue); background: #fff;
            padding: 18px 24px; font-size: 1rem;
            box-shadow: none !important; border: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) { background: var(--primary-light); color: var(--primary); }
        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23FF6B00'%3E%3Cpath fill-rule='evenodd' d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5h-4.5a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2z'/%3E%3C/svg%3E");
            transition: transform 0.3s;
        }
        .faq-accordion .accordion-button:not(.collapsed)::after { transform: rotate(45deg); }
        .faq-accordion .accordion-body { padding: 0 24px 20px; color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }
        /* Process */
        .process-section { background: var(--bg-warm); }
        .process-step {
            text-align: center; padding: 24px 16px; position: relative;
        }
        .process-step .step-number {
            width: 48px; height: 48px; border-radius: 50%;
            background: var(--primary); color: #fff;
            display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.2rem; margin: 0 auto 16px;
            position: relative; z-index: 2;
        }
        .process-step .step-line {
            position: absolute; top: 24px; left: 60%; right: -40%;
            height: 3px; background: linear-gradient(90deg, var(--primary), var(--primary-light));
            z-index: 1;
        }
        .process-step:last-child .step-line { display: none; }
        .process-step h5 { font-weight: 700; color: var(--deep-blue); margin-bottom: 8px; font-size: 1.05rem; }
        .process-step p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0; }
        @media (max-width: 767.98px) {
            .process-step .step-line { display: none; }
            .process-step { margin-bottom: 24px; }
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--deep-blue), #0D2F4F);
            padding: 80px 0; text-align: center; position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-section h2 { color: #fff; font-weight: 800; font-size: 2.2rem; position: relative; z-index: 2; }
        .cta-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 560px; margin: 16px auto 32px; position: relative; z-index: 2; }
        .cta-section .btn-cta {
            display: inline-block; padding: 16px 48px; background: var(--primary); color: #fff;
            border-radius: var(--btn-radius); font-weight: 700; font-size: 1.1rem;
            transition: var(--transition-base); border: none; position: relative; z-index: 2;
        }
        .cta-section .btn-cta:hover { background: var(--primary-dark); transform: translateY(-3px); box-shadow: 0 10px 30px rgba(255,107,0,0.4); }
        .cta-section .cta-contact {
            margin-top: 20px; color: rgba(255,255,255,0.5); font-size: 0.9rem;
            position: relative; z-index: 2;
        }
        .cta-section .cta-contact a { color: var(--primary); font-weight: 600; }
        /* Support Features */
        .support-features { background: #fff; }
        .support-feature-item {
            display: flex; gap: 16px; padding: 20px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .support-feature-item:last-child { border-bottom: none; }
        .support-feature-item .sf-icon {
            width: 48px; height: 48px; min-width: 48px; border-radius: 12px;
            background: var(--primary-light); color: var(--primary);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.2rem;
        }
        .support-feature-item h5 { font-size: 1rem; font-weight: 700; color: var(--deep-blue); margin-bottom: 4px; }
        .support-feature-item p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0; }
        /* Footer */
        .site-footer {
            background: var(--deep-blue); color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
        }
        .site-footer h5 { color: #fff; font-weight: 700; font-size: 1rem; margin-bottom: 20px; }
        .site-footer .footer-brand {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: 16px;
        }
        .site-footer .footer-brand .brand-icon {
            width: 36px; height: 36px; border-radius: 10px;
            background: var(--primary); color: #fff; display: inline-flex;
            align-items: center; justify-content: center; font-weight: 800;
        }
        .site-footer .footer-desc { font-size: 0.9rem; color: rgba(255,255,255,0.5); margin-bottom: 20px; max-width: 320px; }
        .site-footer .footer-social a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: 50%;
            background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.6);
            margin-right: 10px; font-size: 1rem; transition: var(--transition-base);
        }
        .site-footer .footer-social a:hover { background: var(--primary); color: #fff; }
        .site-footer .footer-links { list-style: none; padding: 0; margin: 0; }
        .site-footer .footer-links li { margin-bottom: 10px; }
        .site-footer .footer-links a { color: rgba(255,255,255,0.5); font-size: 0.9rem; transition: var(--transition-base); }
        .site-footer .footer-links a:hover { color: var(--primary); padding-left: 4px; }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 24px 0; margin-top: 40px;
            text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.3);
        }
        /* Buttons general */
        .btn-primary-custom {
            background: var(--primary); color: #fff; border: none;
            padding: 12px 32px; border-radius: var(--btn-radius);
            font-weight: 600; transition: var(--transition-base);
            display: inline-block;
        }
        .btn-primary-custom:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,107,0,0.3); color: #fff; }
        .btn-outline-custom {
            background: transparent; color: var(--primary); border: 2px solid var(--primary);
            padding: 10px 28px; border-radius: var(--btn-radius);
            font-weight: 600; transition: var(--transition-base);
            display: inline-block;
        }
        .btn-outline-custom:hover { background: var(--primary); color: #fff; }
        /* Responsive */
        @media (max-width: 991.98px) {
            .section-padding { padding: 60px 0; }
            .section-title { font-size: 1.6rem; }
        }
        @media (max-width: 575.98px) {
            body { padding-top: 66px; }
            .section-padding { padding: 40px 0; }
            .section-title { font-size: 1.4rem; }
            .section-subtitle { font-size: 0.95rem; margin-bottom: 32px; }
            .help-hero { padding: 40px 0 50px; }
            .help-hero h1 { font-size: 1.5rem; }
        }
        /* Accessibility */
        .nav-link:focus-visible, .btn:focus-visible, a:focus-visible {
            outline: 3px solid var(--primary); outline-offset: 2px;
        }
        /* Extra */
        .bg-orange-soft { background: var(--primary-light); }
        .text-primary { color: var(--primary) !important; }
        .rounded-card { border-radius: var(--card-radius); }
        .shadow-card { box-shadow: var(--shadow-sm); }
        .hover-lift { transition: var(--transition-base); }
        .hover-lift:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        /* Quick links */
        .quick-links { background: #fff; }
        .quick-link-item {
            padding: 16px 20px; border-radius: 12px;
            background: var(--bg-warm); transition: var(--transition-base);
            display: flex; align-items: center; gap: 12px;
        }
        .quick-link-item:hover { background: var(--primary-light); transform: translateX(4px); }
        .quick-link-item i { color: var(--primary); font-size: 1.2rem; width: 24px; text-align: center; }
        .quick-link-item span { font-weight: 500; color: var(--deep-blue); }
        .quick-link-item small { color: var(--text-muted); font-size: 0.85rem; }