/* roulang page: index */
:root {
            --primary: #1a1a2e;
            --primary-light: #2d2d5e;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --accent-light: #fef3c7;
            --bg-body: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-section: #12121f;
            --text-white: #f8fafc;
            --text-light: #cbd5e1;
            --text-muted: #94a3b8;
            --border-color: #2d2d5e;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
            --shadow-glow: 0 0 40px rgba(245,158,11,0.15);
            --transition: all 0.3s 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;
            background: var(--bg-body);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input {
            font-family: inherit;
            outline: none;
            border: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-body);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 6px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent);
        }

        /* ===== Header & Nav ===== */
        .site-header {
            background: rgba(15,15,26,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(45,45,94,0.4);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(15,15,26,0.98);
            box-shadow: 0 4px 30px rgba(0,0,0,0.5);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f59e0b, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            -webkit-text-fill-color: initial;
            color: #f59e0b;
            font-size: 1.6rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-links a {
            padding: 8px 20px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(255,255,255,0.06);
        }
        .nav-links a.active {
            color: #fff;
            background: rgba(245,158,11,0.15);
            box-shadow: inset 0 0 0 1px rgba(245,158,11,0.2);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-cta {
            background: linear-gradient(135deg, #f59e0b, #d97706) !important;
            color: #0f0f1a !important;
            font-weight: 700 !important;
            padding: 10px 28px !important;
            border-radius: 40px !important;
            box-shadow: 0 4px 20px rgba(245,158,11,0.3);
            transition: var(--transition) !important;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 32px rgba(245,158,11,0.45) !important;
            background: linear-gradient(135deg, #fbbf24, #f59e0b) !important;
        }
        .nav-cta i {
            font-size: 0.9rem;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: transparent;
            border: none;
        }
        .hamburger span {
            width: 26px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(15,15,26,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 28px;
                border-bottom: 1px solid var(--border-color);
                display: none;
                gap: 6px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 20px;
                border-radius: 12px;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(245,158,11,0.12);
            }
            .nav-cta {
                justify-content: center;
                margin-top: 8px;
                padding: 14px 28px !important;
            }
            .nav-wrap {
                height: 64px;
            }
            .logo {
                font-size: 1.25rem;
            }
        }
        @media (max-width: 520px) {
            .nav-wrap {
                height: 58px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .nav-cta {
                padding: 10px 18px !important;
                font-size: 0.85rem !important;
            }
        }

        /* ===== Hero ===== */
        .hero {
            padding: 80px 0 100px;
            background: radial-gradient(ellipse at 50% 0%, rgba(245,158,11,0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 80% 30%, rgba(99,102,241,0.06) 0%, transparent 50%),
                        var(--bg-body);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -200px;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(245,158,11,0.04) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-wrap {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245,158,11,0.1);
            border: 1px solid rgba(245,158,11,0.2);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: var(--accent);
            margin-bottom: 24px;
            font-weight: 500;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero h1 {
            font-size: 3.8rem;
            font-weight: 800;
            letter-spacing: -1.5px;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #f8fafc 40%, #f59e0b 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary {
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #0f0f1a;
            font-weight: 700;
            padding: 16px 40px;
            border-radius: 50px;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 32px rgba(245,158,11,0.3);
            transition: var(--transition);
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 48px rgba(245,158,11,0.45);
        }
        .hero-actions .btn-secondary {
            background: rgba(255,255,255,0.06);
            color: var(--text-white);
            font-weight: 600;
            padding: 16px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 1px solid rgba(255,255,255,0.1);
            transition: var(--transition);
        }
        .hero-actions .btn-secondary:hover {
            background: rgba(255,255,255,0.1);
            border-color: rgba(245,158,11,0.3);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 60px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stats .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero { padding: 60px 0 70px; }
            .hero h1 { font-size: 2.6rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 28px; }
            .hero-stats .stat-num { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.9rem; }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary { width: 100%; justify-content: center; padding: 14px 24px; font-size: 0.95rem; }
            .hero-stats { gap: 20px; }
            .hero-stats .stat-num { font-size: 1.5rem; }
            .hero-badge { font-size: 0.75rem; padding: 4px 14px; }
        }

        /* ===== Sections ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-section);
        }
        .section-title {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-title h2 {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
            font-size: 1rem;
        }
        .section-title .title-accent {
            display: inline-block;
            width: 48px;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), transparent);
            border-radius: 4px;
            margin-bottom: 16px;
        }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-title { margin-bottom: 40px; }
            .section-title h2 { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .section { padding: 40px 0; }
            .section-title h2 { font-size: 1.5rem; }
        }

        /* ===== Features / Intro ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 36px 28px;
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(245,158,11,0.3);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .feature-card .icon {
            width: 60px;
            height: 60px;
            background: rgba(245,158,11,0.1);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--accent);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .feature-card { padding: 28px 20px; }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; gap: 16px; }
            .feature-card { padding: 24px 18px; }
            .feature-card .icon { width: 48px; height: 48px; font-size: 1.3rem; }
        }

        /* ===== Category cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }
        .category-card:hover {
            transform: translateY(-4px);
            border-color: rgba(245,158,11,0.25);
            box-shadow: var(--shadow-card);
        }
        .category-card .cat-icon {
            width: 52px;
            height: 52px;
            background: rgba(245,158,11,0.1);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .category-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .category-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 6px 0;
        }
        .category-card .cat-link:hover {
            gap: 14px;
        }
        @media (max-width: 768px) {
            .category-grid { grid-template-columns: 1fr; gap: 20px; }
        }
        @media (max-width: 520px) {
            .category-card { padding: 24px 18px; }
        }

        /* ===== Latest posts list ===== */
        .posts-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .post-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 24px 24px 20px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            border-color: rgba(245,158,11,0.25);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .post-card .post-meta .cat-tag {
            background: rgba(245,158,11,0.1);
            color: var(--accent);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .post-card .post-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .post-card .post-meta .date i {
            font-size: 0.7rem;
        }
        .post-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card h3 a {
            color: var(--text-white);
        }
        .post-card h3 a:hover {
            color: var(--accent);
        }
        .post-card .excerpt {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            flex: 1;
        }
        .post-card .read-more {
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            align-self: flex-start;
        }
        .post-card .read-more:hover {
            gap: 12px;
        }
        .posts-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px dashed var(--border-color);
        }
        .posts-empty i {
            font-size: 2.4rem;
            color: var(--text-muted);
            margin-bottom: 14px;
            opacity: 0.5;
        }
        @media (max-width: 768px) {
            .posts-list { grid-template-columns: 1fr; gap: 18px; }
            .post-card { padding: 20px 18px; }
        }
        @media (max-width: 520px) {
            .post-card .post-meta { font-size: 0.75rem; gap: 8px; }
            .post-card h3 { font-size: 0.95rem; }
        }

        /* ===== Process / Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            border-color: rgba(245,158,11,0.2);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, rgba(245,158,11,0.2), rgba(245,158,11,0.05));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent);
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-card p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
        }
        @media (max-width: 520px) {
            .steps-grid { grid-template-columns: 1fr; gap: 14px; }
            .step-card { padding: 24px 18px; }
        }

        /* ===== Stats / Data ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .data-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .data-card:hover {
            border-color: rgba(245,158,11,0.2);
            box-shadow: var(--shadow-card);
        }
        .data-card .data-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .data-card .data-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 6px;
        }
        .data-card .data-icon {
            font-size: 1.8rem;
            color: rgba(245,158,11,0.2);
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .data-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
            .data-card .data-num { font-size: 1.8rem; }
        }
        @media (max-width: 520px) {
            .data-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .data-card { padding: 24px 14px; }
            .data-card .data-num { font-size: 1.5rem; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(245,158,11,0.15);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            width: 100%;
            text-align: left;
            color: var(--text-white);
            gap: 16px;
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--accent);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 520px) {
            .faq-question { padding: 16px 18px; font-size: 0.92rem; }
            .faq-answer.open { padding: 0 18px 16px; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: radial-gradient(ellipse at 50% 50%, rgba(245,158,11,0.06) 0%, transparent 60%),
                        var(--bg-section);
            border-top: 1px solid rgba(45,45,94,0.3);
            border-bottom: 1px solid rgba(45,45,94,0.3);
        }
        .cta-wrap {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-wrap h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-wrap p {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 32px;
        }
        .cta-wrap .btn-cta {
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #0f0f1a;
            font-weight: 700;
            padding: 18px 52px;
            border-radius: 50px;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            gap: 12px;
            box-shadow: 0 8px 32px rgba(245,158,11,0.3);
            transition: var(--transition);
        }
        .cta-wrap .btn-cta:hover {
            transform: translateY(-3px) scale(1.02);
            box-shadow: 0 12px 48px rgba(245,158,11,0.45);
        }
        @media (max-width: 520px) {
            .cta-wrap h2 { font-size: 1.6rem; }
            .cta-wrap .btn-cta { width: 100%; justify-content: center; padding: 16px 24px; font-size: 1rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0a0a14;
            border-top: 1px solid rgba(45,45,94,0.3);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-white);
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            color: var(--text-muted);
            font-size: 0.88rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(45,45,94,0.2);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.82rem;
        }
        .footer-bottom .legal-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom .legal-links a {
            color: var(--text-muted);
            font-size: 0.82rem;
        }
        .footer-bottom .legal-links a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .site-footer { padding: 32px 0 24px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-bottom .legal-links { justify-content: center; flex-wrap: wrap; gap: 12px; }
        }

        /* ===== Utility ===== */
        .text-accent { color: var(--accent); }
        .bg-accent { background: var(--accent); }
        .border-accent { border-color: rgba(245,158,11,0.3); }
        .gap-section { height: 1px; background: linear-gradient(90deg, transparent, var(--border-color), transparent); margin: 0; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* focus visible */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

/* roulang page: category1 */
:root {
            --primary: #1e3a8a;
            --primary-light: #3b82f6;
            --primary-dark: #1e40af;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --text: #0f172a;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(30, 58, 138, 0.08);
            --shadow-hover: 0 12px 40px rgba(30, 58, 138, 0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            transition: var(--transition);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0 0;
            height: 72px;
            display: flex;
            align-items: center;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .logo:hover {
            opacity: 0.85;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links li a {
            padding: 8px 18px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }

        .nav-links li a:hover {
            color: var(--primary);
            background: rgba(30, 58, 138, 0.06);
        }

        .nav-links li a.active {
            color: var(--primary);
            background: rgba(30, 58, 138, 0.10);
            font-weight: 700;
        }

        .nav-links li a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(30, 58, 138, 0.25);
        }
        .nav-links li a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(30, 58, 138, 0.35);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px 4px;
            background: transparent;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 60%, #312e81 100%);
            color: #fff;
            padding: 80px 0 64px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .page-hero h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .page-hero p {
            font-size: 1.2rem;
            opacity: 0.85;
            max-width: 640px;
            line-height: 1.7;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            opacity: 0.7;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .page-hero .breadcrumb a:hover {
            opacity: 1;
            color: var(--accent-light);
        }
        .page-hero .breadcrumb span {
            color: var(--accent-light);
            font-weight: 600;
        }

        /* ===== Section common ===== */
        .section {
            padding: 72px 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 12px;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .section-sub {
            font-size: 1.1rem;
            color: var(--text-light);
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        .section-white {
            background: #fff;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 24px;
            transition: var(--transition);
            border: 1px solid rgba(226, 232, 240, 0.5);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(30, 58, 138, 0.12);
        }
        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .card .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(30, 58, 138, 0.08);
            color: var(--primary);
            margin-top: 12px;
        }

        /* ===== Guide List ===== */
        .guide-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .guide-item:last-child {
            border-bottom: none;
        }
        .guide-item:hover {
            padding-left: 8px;
        }
        .guide-item .guide-num {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(30, 58, 138, 0.15);
            min-width: 48px;
            line-height: 1;
        }
        .guide-item .guide-content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text);
        }
        .guide-item .guide-content p {
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .guide-item .guide-content .guide-meta {
            display: flex;
            gap: 16px;
            margin-top: 8px;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .guide-item .guide-content .guide-meta i {
            color: var(--primary-light);
            margin-right: 4px;
        }

        /* ===== Stats ===== */
        .stat-box {
            text-align: center;
            padding: 32px 16px;
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.4);
            transition: var(--transition);
        }
        .stat-box:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-box .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-box .stat-label {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-top: 6px;
        }
        .stat-box .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }

        /* ===== Steps ===== */
        .step-card {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.4);
            position: relative;
            transition: var(--transition);
            height: 100%;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-card .step-badge {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 16px;
        }
        .step-card h4 {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .step-card p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            box-shadow: 0 2px 12px rgba(30, 58, 138, 0.06);
            border: 1px solid var(--border);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: 0 4px 20px rgba(30, 58, 138, 0.10);
        }
        .faq-item .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text);
        }
        .faq-item .faq-q i {
            color: var(--primary-light);
            transition: var(--transition);
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            margin-top: 12px;
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e3a8a 0%, #312e81 100%);
            color: #fff;
            padding: 72px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.15rem;
            opacity: 0.85;
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 50px;
            background: var(--accent);
            color: #1e3a8a;
            font-weight: 800;
            font-size: 1.1rem;
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
        }
        .cta-section .cta-btn:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 44px rgba(245, 158, 11, 0.50);
            background: var(--accent-light);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
        }
        .site-footer .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .site-footer .logo i {
            color: var(--accent);
        }
        .site-footer p {
            font-size: 0.92rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
        }
        .footer-col ul li a i {
            font-size: 0.7rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
        }
        .footer-bottom .legal-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom .legal-links a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom .legal-links a:hover {
            color: var(--accent-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 2.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 24px 28px;
                gap: 12px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 48px rgba(0, 0, 0, 0.10);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 24px 24px;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links li a {
                width: 100%;
                text-align: center;
                padding: 14px 18px;
                font-size: 1.05rem;
            }
            .nav-links li a.nav-cta {
                justify-content: center;
            }

            .page-hero {
                padding: 56px 0 48px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }

            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-sub {
                font-size: 1rem;
                margin-bottom: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .guide-item {
                flex-direction: column;
                gap: 8px;
            }
            .guide-item .guide-num {
                font-size: 1.4rem;
                min-width: auto;
            }

            .stat-box .stat-num {
                font-size: 2.2rem;
            }

            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .card {
                padding: 20px 16px;
            }
            .stat-box {
                padding: 20px 12px;
            }
            .stat-box .stat-num {
                font-size: 1.8rem;
            }
            .footer-grid {
                gap: 24px;
            }
            .footer-bottom .legal-links {
                flex-wrap: wrap;
                gap: 12px;
            }
        }

        /* ===== Utility ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }

        .mt-8 {
            margin-top: 48px;
        }
        .mb-8 {
            margin-bottom: 48px;
        }
        .gap-6 {
            gap: 24px;
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: article */
:root {
            --primary: #3b82f6;
            --primary-dark: #1d4ed8;
            --accent: #f59e0b;
            --bg: #ffffff;
            --surface: #f8fafc;
            --text: #0f172a;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 1rem;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 16px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body { font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }
        button, input, textarea { font-family: inherit; transition: var(--transition); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
        .site-header { background: rgba(255,255,255,0.95); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; }
        .nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .logo { display: flex; align-items: center; gap: 0.5rem; font-size: 1.35rem; font-weight: 800; color: var(--text); letter-spacing: -0.02em; }
        .logo i { color: var(--accent); font-size: 1.5rem; }
        .nav-links { display: flex; align-items: center; gap: 0.25rem; list-style: none; }
        .nav-links li a { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.5rem 1rem; border-radius: 0.75rem; font-size: 0.95rem; font-weight: 500; color: var(--text-muted); transition: var(--transition); }
        .nav-links li a:hover { background: var(--surface); color: var(--text); }
        .nav-links li a.active { background: rgba(59,130,246,0.1); color: var(--primary-dark); font-weight: 600; }
        .nav-links li a.nav-cta { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; padding: 0.5rem 1.25rem; border-radius: 2rem; font-weight: 600; box-shadow: 0 4px 14px rgba(59,130,246,0.3); }
        .nav-links li a.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(59,130,246,0.4); }
        .hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 0.5rem; }
        .hamburger span { display: block; width: 26px; height: 2.5px; background: var(--text); border-radius: 4px; transition: var(--transition); }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .nav-links { position: fixed; top: 72px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 1.5rem; gap: 0.5rem; border-bottom: 1px solid var(--border); transform: translateY(-120%); opacity: 0; pointer-events: none; transition: var(--transition); box-shadow: 0 20px 40px rgba(0,0,0,0.06); }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .nav-links li a { width: 100%; justify-content: center; padding: 0.75rem 1rem; font-size: 1.05rem; }
            .nav-links li a.nav-cta { margin-top: 0.5rem; }
        }
        .hero-article { padding: 3rem 0 2rem; background: linear-gradient(180deg, #f0f4ff 0%, #ffffff 100%); }
        .hero-article .breadcrumb { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.5rem; }
        .hero-article .breadcrumb a:hover { color: var(--primary); }
        .hero-article .breadcrumb .sep { color: #cbd5e1; }
        .hero-article h1 { font-size: 2.5rem; font-weight: 800; line-height: 1.25; letter-spacing: -0.02em; margin-bottom: 1rem; color: var(--text); }
        .hero-article .meta { display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: center; font-size: 0.95rem; color: var(--text-muted); margin-bottom: 1.5rem; }
        .hero-article .meta .tag { display: inline-flex; align-items: center; gap: 0.3rem; background: rgba(59,130,246,0.08); color: var(--primary-dark); padding: 0.2rem 0.75rem; border-radius: 2rem; font-size: 0.85rem; font-weight: 500; }
        .hero-article .meta i { font-size: 0.85rem; }
        .article-featured-image { width: 100%; max-height: 480px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 2rem; }
        .article-body { padding: 2rem 0 4rem; }
        .article-body .content { max-width: 800px; margin: 0 auto; font-size: 1.05rem; line-height: 1.9; color: #1e293b; }
        .article-body .content p { margin-bottom: 1.25rem; }
        .article-body .content h2 { font-size: 1.75rem; font-weight: 700; margin-top: 2.5rem; margin-bottom: 1rem; color: var(--text); }
        .article-body .content h3 { font-size: 1.35rem; font-weight: 600; margin-top: 2rem; margin-bottom: 0.75rem; }
        .article-body .content ul, .article-body .content ol { margin-bottom: 1.25rem; padding-left: 1.5rem; }
        .article-body .content li { margin-bottom: 0.5rem; }
        .article-body .content blockquote { border-left: 4px solid var(--primary); background: #f0f4ff; padding: 1rem 1.5rem; margin: 1.5rem 0; border-radius: 0 0.75rem 0.75rem 0; font-style: italic; color: #334155; }
        .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 .content img { margin: 1.5rem auto; border-radius: var(--radius); box-shadow: var(--shadow); }
        .article-body .content pre { background: #0f172a; color: #e2e8f0; padding: 1.25rem 1.5rem; border-radius: 0.75rem; overflow-x: auto; margin: 1.5rem 0; font-size: 0.9rem; }
        .article-body .content code { background: #f1f5f9; padding: 0.2rem 0.5rem; border-radius: 0.35rem; font-size: 0.9rem; color: #b91c1c; }
        .article-body .content pre code { background: transparent; color: inherit; padding: 0; border-radius: 0; }
        .article-footer-bar { max-width: 800px; margin: 2rem auto 0; padding-top: 1.5rem; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; }
        .article-footer-bar .share { display: flex; gap: 0.75rem; align-items: center; }
        .article-footer-bar .share a { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: var(--surface); color: var(--text-muted); font-size: 1.1rem; transition: var(--transition); }
        .article-footer-bar .share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .section-title { font-size: 1.75rem; font-weight: 700; text-align: center; margin-bottom: 2.5rem; color: var(--text); letter-spacing: -0.01em; }
        .section-title span { color: var(--primary); }
        .related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.5rem; }
        .related-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; transition: var(--transition); box-shadow: var(--shadow); }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
        .related-card .cat-tag { display: inline-block; background: rgba(59,130,246,0.08); color: var(--primary-dark); font-size: 0.8rem; padding: 0.15rem 0.6rem; border-radius: 2rem; font-weight: 500; margin-bottom: 0.75rem; }
        .related-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; line-height: 1.4; }
        .related-card h3 a:hover { color: var(--primary); }
        .related-card p { font-size: 0.9rem; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .date { font-size: 0.8rem; color: #94a3b8; margin-top: 0.75rem; display: flex; align-items: center; gap: 0.35rem; }
        .faq-section { background: var(--surface); padding: 4rem 0; }
        .faq-grid { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 1rem; }
        .faq-item { background: #fff; border: 1px solid var(--border); border-radius: 0.75rem; overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--primary); }
        .faq-question { display: flex; justify-content: space-between; align-items: center; padding: 1.25rem 1.5rem; cursor: pointer; font-weight: 600; font-size: 1.05rem; color: var(--text); background: none; border: none; width: 100%; text-align: left; }
        .faq-question i { font-size: 0.9rem; color: var(--primary); transition: var(--transition); }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 1.5rem 1.25rem; color: var(--text-muted); line-height: 1.8; display: none; font-size: 0.95rem; }
        .faq-item.active .faq-answer { display: block; }
        .cta-section { padding: 4rem 0; background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 100%); color: #fff; text-align: center; }
        .cta-section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
        .cta-section p { font-size: 1.1rem; opacity: 0.9; margin-bottom: 2rem; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta-section .cta-btn { display: inline-flex; align-items: center; gap: 0.5rem; background: #fff; color: #1d4ed8; padding: 0.85rem 2rem; border-radius: 3rem; font-weight: 700; font-size: 1.05rem; transition: var(--transition); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
        .cta-section .cta-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(0,0,0,0.25); }
        .site-footer { background: #0f172a; color: #cbd5e1; padding: 4rem 0 1.5rem; }
        .site-footer .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
        .site-footer .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 1rem; }
        .site-footer .footer-brand .logo i { color: var(--accent); }
        .site-footer .footer-brand p { font-size: 0.95rem; line-height: 1.8; color: #94a3b8; max-width: 360px; }
        .site-footer .footer-col h4 { color: #fff; font-size: 1.05rem; font-weight: 600; margin-bottom: 1.25rem; }
        .site-footer .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
        .site-footer .footer-col ul li a { color: #94a3b8; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 0.35rem; transition: var(--transition); }
        .site-footer .footer-col ul li a i { font-size: 0.6rem; }
        .site-footer .footer-col ul li a:hover { color: #fff; padding-left: 0.25rem; }
        .site-footer .footer-bottom { border-top: 1px solid #1e293b; padding-top: 1.5rem; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; font-size: 0.85rem; color: #64748b; }
        .site-footer .footer-bottom .legal-links { display: flex; gap: 1.5rem; }
        .site-footer .footer-bottom .legal-links a { color: #64748b; }
        .site-footer .footer-bottom .legal-links a:hover { color: #fff; }
        @media (max-width: 1024px) {
            .hero-article h1 { font-size: 2rem; }
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
        }
        @media (max-width: 768px) {
            .hero-article h1 { font-size: 1.7rem; }
            .hero-article .meta { gap: 0.75rem; font-size: 0.85rem; }
            .article-body .content { font-size: 1rem; }
            .section-title { font-size: 1.4rem; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .site-footer .footer-bottom .legal-links { justify-content: center; flex-wrap: wrap; }
            .cta-section h2 { font-size: 1.5rem; }
            .related-grid { grid-template-columns: 1fr; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 480px) {
            .hero-article h1 { font-size: 1.4rem; }
            .container { padding: 0 1rem; }
            .nav-wrap { height: 64px; }
            .logo { font-size: 1.15rem; }
            .nav-links { top: 64px; }
        }
        .not-found-box { text-align: center; padding: 4rem 2rem; }
        .not-found-box i { font-size: 3rem; color: var(--text-muted); margin-bottom: 1.5rem; }
        .not-found-box h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.75rem; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 1.5rem; }
        .not-found-box a { display: inline-flex; align-items: center; gap: 0.4rem; background: var(--primary); color: #fff; padding: 0.6rem 1.5rem; border-radius: 2rem; font-weight: 500; }
        .not-found-box a:hover { background: var(--primary-dark); transform: translateY(-2px); }
        .loading-placeholder { text-align: center; padding: 3rem; color: var(--text-muted); }
        .loading-placeholder i { font-size: 2rem; margin-bottom: 1rem; opacity: 0.3; }