/* roulang page: index */
:root {
            --primary: #1e3a5f;
            --primary-light: #2d5a8e;
            --primary-dark: #0f2440;
            --accent: #c9a84c;
            --accent-light: #e0c876;
            --accent-dark: #a88a30;
            --bg-light: #f8f7f4;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --border: #e5e7eb;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
            --radius: 16px;
            --radius-sm: 8px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        /* header & nav */
        .top-bar {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.75);
            font-size: 0.8rem;
            padding: 6px 0;
            letter-spacing: 0.02em;
        }
        .top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 6px; }
        .top-bar a { color: rgba(255,255,255,0.85); }
        .top-bar a:hover { color: var(--accent-light); }

        .main-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0,0,0,0.03);
        }
        .main-header .container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
        .logo { font-size: 1.5rem; font-weight: 700; color: var(--primary); letter-spacing: -0.01em; display: flex; align-items: center; gap: 8px; }
        .logo i { color: var(--accent); font-size: 1.3rem; }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { opacity: 0.85; }

        .nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
        .nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--text-muted); padding: 6px 0; border-bottom: 2px solid transparent; transition: var(--transition); }
        .nav-links a:hover, .nav-links a.active { color: var(--primary); border-bottom-color: var(--accent); }
        .nav-links a.active { font-weight: 600; color: var(--primary); }
        .nav-cta {
            background: var(--accent);
            color: var(--primary-dark) !important;
            padding: 8px 22px !important;
            border-radius: 50px;
            font-weight: 600;
            border: none !important;
            transition: var(--transition);
        }
        .nav-cta:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(201,168,76,0.35); }

        .mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
        .mobile-toggle span { width: 26px; height: 2.5px; background: var(--primary); border-radius: 4px; transition: var(--transition); }

        /* hero */
        .hero {
            position: relative;
            min-height: 86vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(30,58,95,0.3) 0%, transparent 70%);
        }
        .hero .container { position: relative; z-index: 2; text-align: center; padding: 80px 20px; }
        .hero h1 { font-size: clamp(2.2rem, 6vw, 4.2rem); font-weight: 800; color: #ffffff; line-height: 1.15; letter-spacing: -0.02em; max-width: 900px; margin: 0 auto 20px; }
        .hero h1 span { color: var(--accent); }
        .hero p { font-size: clamp(1rem, 2vw, 1.25rem); color: rgba(255,255,255,0.8); max-width: 680px; margin: 0 auto 36px; line-height: 1.7; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 10px;
            background: var(--accent); color: var(--primary-dark); padding: 14px 36px;
            border-radius: 50px; font-weight: 700; font-size: 1.05rem;
            transition: var(--transition); border: none; cursor: pointer;
        }
        .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(201,168,76,0.35); }
        .btn-outline {
            display: inline-flex; align-items: center; gap: 10px;
            background: transparent; color: #ffffff; padding: 14px 36px;
            border-radius: 50px; font-weight: 600; font-size: 1.05rem;
            border: 2px solid rgba(255,255,255,0.3); transition: var(--transition);
        }
        .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(201,168,76,0.08); transform: translateY(-2px); }
        .hero-badges { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; margin-top: 40px; }
        .hero-badge { background: rgba(255,255,255,0.08); backdrop-filter: blur(8px); padding: 8px 20px; border-radius: 50px; color: rgba(255,255,255,0.85); font-size: 0.85rem; border: 1px solid rgba(255,255,255,0.06); display: flex; align-items: center; gap: 8px; }

        /* sections */
        section { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 56px; }
        .section-title h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 700; color: var(--primary); margin-bottom: 12px; letter-spacing: -0.01em; }
        .section-title p { color: var(--text-muted); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }
        .section-title .accent-line { width: 60px; height: 4px; background: var(--accent); border-radius: 4px; margin: 16px auto 0; }

        .bg-white { background: #ffffff; }
        .bg-soft { background: var(--bg-light); }

        /* cards grid */
        .features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
        .feature-card {
            background: var(--bg-card); border-radius: var(--radius); padding: 36px 28px;
            box-shadow: var(--shadow); border: 1px solid var(--border);
            transition: var(--transition); text-align: center;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
        .feature-card .icon { width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.8rem; color: #ffffff; }
        .icon-blue { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
        .icon-gold { background: linear-gradient(135deg, var(--accent-dark), var(--accent)); }
        .icon-teal { background: linear-gradient(135deg, #0d9488, #14b8a6); }
        .feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; color: var(--primary); }
        .feature-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }

        /* cover cards */
        .cover-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
        .cover-card {
            background: var(--bg-card); border-radius: var(--radius); overflow: hidden;
            box-shadow: var(--shadow); border: 1px solid var(--border);
            transition: var(--transition);
        }
        .cover-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .cover-card img { width: 100%; height: 200px; object-fit: cover; }
        .cover-card-body { padding: 20px; }
        .cover-card-body h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
        .cover-card-body p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }
        .cover-card-body .tag {
            display: inline-block; background: var(--accent); color: var(--primary-dark);
            padding: 2px 14px; border-radius: 50px; font-size: 0.75rem; font-weight: 600;
            margin-bottom: 10px;
        }

        /* cms list */
        .cms-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
        .cms-item {
            background: var(--bg-card); border-radius: var(--radius); padding: 24px;
            box-shadow: var(--shadow); border: 1px solid var(--border);
            transition: var(--transition);
        }
        .cms-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--accent); }
        .cms-item .meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; flex-wrap: wrap; }
        .cms-item .meta .cat { background: var(--primary); color: #ffffff; padding: 2px 14px; border-radius: 50px; font-size: 0.7rem; font-weight: 600; }
        .cms-item h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; color: var(--primary); line-height: 1.4; }
        .cms-item h3 a { color: inherit; }
        .cms-item h3 a:hover { color: var(--accent-dark); }
        .cms-item p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }
        .cms-empty { text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 1.05rem; grid-column: 1 / -1; }

        /* stats */
        .stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; }
        .stat-item { text-align: center; }
        .stat-item .num { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; color: var(--primary); line-height: 1.1; }
        .stat-item .num span { color: var(--accent); }
        .stat-item .label { color: var(--text-muted); font-size: 0.95rem; margin-top: 6px; }

        /* testimonials */
        .testimonial-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
        .testimonial-card {
            background: var(--bg-card); border-radius: var(--radius); padding: 32px 28px;
            box-shadow: var(--shadow); border: 1px solid var(--border);
            transition: var(--transition);
        }
        .testimonial-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
        .testimonial-card .stars { color: var(--accent); font-size: 1rem; margin-bottom: 14px; letter-spacing: 2px; }
        .testimonial-card blockquote { color: var(--text-muted); font-style: italic; font-size: 0.95rem; line-height: 1.7; margin-bottom: 16px; }
        .testimonial-card .author { display: flex; align-items: center; gap: 12px; }
        .testimonial-card .author .avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--primary); color: #ffffff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.9rem; }
        .testimonial-card .author .name { font-weight: 600; font-size: 0.9rem; color: var(--primary); }
        .testimonial-card .author .role { font-size: 0.8rem; color: var(--text-muted); }

        /* faq */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card); border-radius: var(--radius-sm); border: 1px solid var(--border);
            overflow: hidden; transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-question {
            padding: 18px 24px; font-weight: 600; color: var(--primary); cursor: pointer;
            display: flex; justify-content: space-between; align-items: center;
            background: none; border: none; width: 100%; text-align: left; font-size: 1rem;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--accent-dark); }
        .faq-question i { transition: var(--transition); color: var(--accent); font-size: 0.85rem; }
        .faq-question.open i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 18px; color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; display: none; }
        .faq-answer.open { display: block; }

        /* cta */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 80px 0;
            text-align: center;
        }
        .cta-section h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 700; color: #ffffff; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.75); max-width: 580px; margin: 0 auto 32px; font-size: 1.05rem; }

        /* footer */
        .footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-brand .logo { color: #ffffff; margin-bottom: 16px; }
        .footer-brand .logo span { -webkit-text-fill-color: #ffffff; background: none; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer h4 { font-size: 1rem; font-weight: 700; color: #ffffff; margin-bottom: 18px; }
        .footer ul { list-style: none; }
        .footer ul li { margin-bottom: 10px; }
        .footer ul a { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
        .footer ul a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        /* mobile */
        @media (max-width: 768px) {
            .mobile-toggle { display: flex; }
            .nav-links {
                position: fixed; top: 70px; left: 0; right: 0;
                background: #ffffff; border-bottom: 1px solid var(--border);
                flex-direction: column; padding: 24px 20px;
                gap: 16px; display: none; box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 8px 0; font-size: 1rem; }
            .hero { min-height: 70vh; }
            .hero h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); }
            section { padding: 56px 0; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .top-bar .container { justify-content: center; text-align: center; }
            .features-grid, .cover-grid, .cms-list, .testimonial-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        }
        @media (max-width: 520px) {
            .hero-actions { flex-direction: column; align-items: center; }
            .btn-primary, .btn-outline { width: 100%; justify-content: center; }
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .footer-brand p { margin: 0 auto; }
            .hero-badges { flex-direction: column; align-items: center; }
            .stats-grid { grid-template-columns: 1fr; }
        }

        /* scroll reveal */
        .fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
        .fade-up.show { opacity: 1; transform: translateY(0); }

.rotate-180 { transform: rotate(180deg); }
    .faq-question.open i { transform: rotate(180deg); }

/* roulang page: article */
:root {
            --primary: #146ef5;
            --primary-dark: #0d59e1;
            --accent: #ee8c24;
            --deep: #0b1a2e;
            --soft-bg: #f8fafc;
            --border-light: #e9edf4;
            --text-body: #1e293b;
            --text-weak: #64748b;
            --radius: 0.75rem;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            color: var(--text-body);
            background: #ffffff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        @media (min-width: 768px) {
            .container {
                padding: 0 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 2.5rem;
            }
        }
        .top-bar {
            background: var(--deep);
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.8rem;
            padding: 0.4rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-bar a {
            color: rgba(255, 255, 255, 0.8);
            transition: color 0.2s;
        }
        .top-bar a:hover {
            color: #fff;
        }
        .top-bar .badge {
            background: var(--accent);
            color: #fff;
            padding: 0.1rem 0.6rem;
            border-radius: 999px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .header-main {
            background: #ffffff;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
            transition: box-shadow 0.3s;
        }
        .header-main.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .header-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--deep);
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
        }
        .nav-links li a {
            padding: 0.5rem 1rem;
            border-radius: 2rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all 0.25s;
            white-space: nowrap;
        }
        .nav-links li a:hover {
            background: rgba(20, 110, 245, 0.08);
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(20, 110, 245, 0.3);
        }
        .nav-links li a.nav-cta {
            background: var(--accent);
            color: #fff;
            padding: 0.5rem 1.25rem;
            box-shadow: 0 4px 14px rgba(238, 140, 36, 0.35);
            margin-left: 0.25rem;
        }
        .nav-links li a.nav-cta:hover {
            background: #d85d0a;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(238, 140, 36, 0.4);
        }
        .nav-links li a.nav-cta i {
            margin-right: 0.35rem;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--deep);
            cursor: pointer;
            padding: 0.25rem;
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 1rem 1.5rem 1.5rem;
                gap: 0.35rem;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
                border-radius: 0 0 1rem 1rem;
                z-index: 99;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 0.6rem 1rem;
                width: 100%;
                border-radius: 0.5rem;
            }
            .nav-links li a.nav-cta {
                margin-left: 0;
                margin-top: 0.25rem;
                text-align: center;
            }
            .top-bar .container {
                flex-direction: column;
                text-align: center;
            }
        }
        .article-hero {
            background: linear-gradient(135deg, var(--deep) 0%, #0f2a4a 100%);
            padding: 4rem 0 3.5rem;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero h1 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            max-width: 860px;
            letter-spacing: -0.3px;
        }
        .article-hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            margin-top: 1.2rem;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        .article-hero .meta i {
            margin-right: 0.4rem;
            opacity: 0.7;
        }
        .article-hero .meta a {
            color: rgba(255, 255, 255, 0.8);
            border-bottom: 1px dotted rgba(255, 255, 255, 0.3);
        }
        .article-hero .meta a:hover {
            color: #fff;
            border-color: #fff;
        }
        @media (min-width: 768px) {
            .article-hero h1 {
                font-size: 2.6rem;
            }
            .article-hero {
                padding: 5rem 0 4rem;
            }
        }
        @media (min-width: 1024px) {
            .article-hero h1 {
                font-size: 3rem;
            }
        }
        .article-body {
            padding: 3rem 0 4rem;
        }
        .article-body .content {
            max-width: 820px;
            margin: 0 auto;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body .content p {
            margin-bottom: 1.4rem;
        }
        .article-body .content h2,
        .article-body .content h3 {
            margin-top: 2.2rem;
            margin-bottom: 1rem;
            font-weight: 700;
            color: var(--deep);
        }
        .article-body .content h2 {
            font-size: 1.6rem;
        }
        .article-body .content h3 {
            font-size: 1.25rem;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin: 1rem 0 1.5rem 1.6rem;
        }
        .article-body .content li {
            margin-bottom: 0.5rem;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: #f1f7fe;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 0.5rem 0.5rem 0;
            color: #1e293b;
        }
        .article-body .content img {
            margin: 1.8rem auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
        }
        .article-body .content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover {
            color: var(--primary-dark);
        }
        .article-body .not-found {
            text-align: center;
            padding: 5rem 2rem;
        }
        .article-body .not-found i {
            font-size: 4rem;
            color: #cbd5e1;
            margin-bottom: 1.5rem;
        }
        .article-body .not-found h2 {
            font-size: 1.8rem;
            color: var(--deep);
            margin-bottom: 0.75rem;
        }
        .article-body .not-found p {
            color: var(--text-weak);
            margin-bottom: 1.5rem;
        }
        .article-body .not-found a {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 0.7rem 2rem;
            border-radius: 2rem;
            font-weight: 600;
            transition: all 0.25s;
        }
        .article-body .not-found a:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(20, 110, 245, 0.35);
        }
        .article-nav {
            border-top: 1px solid var(--border-light);
            padding: 2rem 0 0;
            margin-top: 3rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .article-nav a {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-weak);
            font-size: 0.95rem;
            transition: all 0.2s;
        }
        .article-nav a:hover {
            color: var(--primary);
        }
        .related-section {
            background: var(--soft-bg);
            padding: 3.5rem 0;
        }
        .related-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--deep);
            margin-bottom: 2rem;
            text-align: center;
        }
        .related-grid {
            display: grid;
            gap: 1.5rem;
            grid-template-columns: 1fr;
        }
        @media (min-width: 640px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s;
            border: 1px solid var(--border-light);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 1.2rem 1.4rem 1.4rem;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--deep);
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-weak);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .tag {
            display: inline-block;
            font-size: 0.75rem;
            background: rgba(20, 110, 245, 0.08);
            color: var(--primary);
            padding: 0.15rem 0.6rem;
            border-radius: 999px;
            margin-top: 0.5rem;
        }
        .cta-section {
            background: linear-gradient(135deg, var(--deep) 0%, #0f2a4a 100%);
            padding: 3.5rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 1.8rem;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }
        .cta-section .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 0.8rem 2.2rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.25s;
            box-shadow: 0 4px 16px rgba(238, 140, 36, 0.4);
        }
        .cta-section .btn-primary:hover {
            background: #d85d0a;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(238, 140, 36, 0.5);
        }
        .cta-section .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 0.8rem 2.2rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.25s;
        }
        .cta-section .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .footer {
            background: #0b1422;
            color: rgba(255, 255, 255, 0.8);
            padding: 3rem 0 1.5rem;
            border-top: 2px solid rgba(255, 255, 255, 0.04);
        }
        .footer .footer-grid {
            display: grid;
            gap: 2rem;
            grid-template-columns: 1fr;
        }
        @media (min-width: 640px) {
            .footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.2fr;
            }
        }
        .footer .logo {
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .footer .logo i {
            color: var(--accent);
        }
        .footer .logo span {
            background: linear-gradient(135deg, #fff, #cbd5e1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }
        .footer h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
        }
        .footer ul {
            list-style: none;
        }
        .footer ul li {
            margin-bottom: 0.5rem;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            transition: color 0.2s;
        }
        .footer ul li a:hover {
            color: #fff;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 2rem;
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem 0.6rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 1.2rem;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .tag-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.85);
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
            font-size: 0.78rem;
            margin-top: 0.5rem;
            backdrop-filter: blur(4px);
        }
        @media (max-width: 480px) {
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .article-body .content {
                font-size: 0.98rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a2d4a;
            --primary-light: #2d4a7a;
            --primary-dark: #0f1e33;
            --accent: #c9a84c;
            --accent-light: #dfc06a;
            --bg-light: #f5f7fa;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-soft: #4a5a6e;
            --text-muted: #7a8a9e;
            --border-light: #e2e6ed;
            --shadow-sm: 0 1px 3px rgba(26,45,74,0.06);
            --shadow-md: 0 4px 16px rgba(26,45,74,0.08);
            --shadow-lg: 0 12px 40px rgba(26,45,74,0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            color: var(--text-dark);
            background: var(--bg-light);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button, input, textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header & Topbar */
        .topbar {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.75);
            font-size: 0.8rem;
            padding: 6px 0;
            letter-spacing: 0.02em;
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 16px;
        }
        .topbar a {
            color: var(--accent-light);
            font-weight: 500;
        }
        .topbar a:hover {
            color: #fff;
        }

        /* Main Nav */
        .main-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .main-header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 64px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-links li a {
            padding: 8px 18px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.925rem;
            color: var(--text-soft);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--primary);
            background: rgba(26,45,74,0.05);
        }
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(26,45,74,0.08);
            font-weight: 600;
        }
        .nav-links li a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 24px;
            border-radius: 40px;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26,45,74,0.20);
        }
        .nav-links li a.nav-cta:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(26,45,74,0.25);
        }
        .nav-links li a.nav-cta i {
            margin-right: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s ease;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links li a {
                padding: 12px 20px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links li a.nav-cta {
                margin-top: 8px;
                text-align: center;
            }
            .nav-toggle {
                display: block;
            }
        }

        /* Hero Section (inner page) */
        .page-hero {
            position: relative;
            padding: 100px 0 80px;
            background: var(--primary);
            color: #fff;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .page-hero p {
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto;
            color: rgba(255,255,255,0.80);
            line-height: 1.7;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.15);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--accent-light);
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 72px 0 56px;
                min-height: 280px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
        }

        /* Section Shared */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 12px;
            color: var(--primary);
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-soft);
            max-width: 600px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }
        @media (max-width: 640px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                margin-bottom: 32px;
                font-size: 0.95rem;
            }
        }

        /* Features Grid */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(201,168,76,0.30);
        }
        .feature-card .icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(26,45,74,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .feature-card p {
            color: var(--text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        @media (max-width: 960px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-card {
                padding: 24px 20px;
            }
        }

        /* Guide Content / Image + Text */
        .guide-block {
            display: flex;
            gap: 48px;
            align-items: center;
        }
        .guide-block.reverse {
            flex-direction: row-reverse;
        }
        .guide-block .guide-image {
            flex: 1 1 48%;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .guide-block .guide-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .guide-block .guide-image:hover img {
            transform: scale(1.02);
        }
        .guide-block .guide-text {
            flex: 1 1 48%;
        }
        .guide-block .guide-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .guide-block .guide-text p {
            color: var(--text-soft);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .guide-block .guide-text .tag {
            display: inline-block;
            background: rgba(201,168,76,0.12);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 40px;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        @media (max-width: 860px) {
            .guide-block, .guide-block.reverse {
                flex-direction: column;
                gap: 28px;
            }
            .guide-block .guide-text h3 {
                font-size: 1.3rem;
            }
        }

        /* Process / Steps */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .step-num {
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 auto 16px;
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .step-card p {
            color: var(--text-soft);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        @media (max-width: 900px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .process-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(201,168,76,0.25);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(26,45,74,0.02);
        }
        .faq-question i {
            color: var(--accent);
            transition: transform 0.3s ease;
            font-size: 0.9rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* CTA */
        .cta-section {
            background: var(--primary);
            color: #fff;
            text-align: center;
            padding: 64px 0;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.80);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-btn {
            display: inline-block;
            background: var(--accent);
            color: var(--primary);
            padding: 14px 40px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(201,168,76,0.30);
        }
        .cta-btn:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(201,168,76,0.40);
            color: var(--primary-dark);
        }
        .cta-btn i {
            margin-right: 8px;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* Footer (inherited from shared) */
        .footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.80);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand .logo span {
            -webkit-text-fill-color: #fff;
            background: none;
        }
        .footer-brand p {
            color: rgba(255,255,255,0.60);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer ul li {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.60);
        }
        .footer ul li a {
            color: rgba(255,255,255,0.60);
            transition: color var(--transition);
        }
        .footer ul li a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }
        @media (max-width: 860px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* Extra utilities */
        .badge-accent {
            display: inline-block;
            background: rgba(201,168,76,0.12);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 40px;
            letter-spacing: 0.03em;
        }
        .text-accent {
            color: var(--accent);
        }
        .mt-8 { margin-top: 32px; }
        .mb-8 { margin-bottom: 32px; }