/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #0d1b2a;
            --color-primary-light: #1a2d44;
            --color-primary-dark: #070f1a;
            --color-accent: #c8a84e;
            --color-accent-light: #e0c06a;
            --color-accent-dark: #a8882e;
            --color-gold-light: #f5e8c8;
            --color-bg: #f7f5f0;
            --color-bg-alt: #eef0f2;
            --color-bg-dark: #0a1628;
            --color-white: #ffffff;
            --color-text: #1a1a2e;
            --color-text-light: #5a6270;
            --color-text-muted: #8a94a6;
            --color-border: #e2e4e8;
            --color-border-light: #f0f1f3;
            --color-shadow: rgba(10, 22, 40, 0.08);
            --color-shadow-hover: rgba(10, 22, 40, 0.16);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px var(--color-shadow);
            --shadow-md: 0 8px 24px var(--color-shadow);
            --shadow-lg: 0 16px 48px var(--color-shadow-hover);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
            --spacing-section: 100px;
            --spacing-section-mobile: 60px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-accent); }
        button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--color-primary); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); }
        h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--color-text-light); }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 27, 42, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(200, 168, 78, 0.15);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(13, 27, 42, 0.98);
            box-shadow: 0 4px 24px rgba(0,0,0,0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-white);
            letter-spacing: 1px;
        }
        .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary-dark);
            font-size: 1.1rem;
            font-weight: 900;
        }
        .site-logo .logo-text {
            background: linear-gradient(135deg, #f5e8c8, var(--color-accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo .logo-tag {
            font-size: 0.65rem;
            font-weight: 400;
            color: var(--color-text-muted);
            letter-spacing: 2px;
            -webkit-text-fill-color: var(--color-text-muted);
            background: none;
            margin-left: 2px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.75);
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 0.3px;
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover {
            color: var(--color-white);
            background: rgba(200, 168, 78, 0.12);
        }
        .main-nav a.active {
            color: var(--color-accent);
            background: rgba(200, 168, 78, 0.10);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light)) !important;
            color: var(--color-primary-dark) !important;
            font-weight: 700 !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: 0 4px 14px rgba(200, 168, 78, 0.3);
        }
        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(200, 168, 78, 0.4) !important;
            background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent)) !important;
            color: var(--color-primary-dark) !important;
        }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 4px;
            background: none;
            border: none;
        }
        .mobile-toggle span {
            width: 26px;
            height: 2px;
            background: var(--color-white);
            border-radius: 2px;
            transition: var(--transition);
        }
        .mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .mobile-toggle.active span:nth-child(2) { opacity: 0; }
        .mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        @media (max-width: 768px) {
            .mobile-toggle { display: flex; }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(13, 27, 42, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid rgba(200, 168, 78, 0.1);
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .main-nav a {
                padding: 14px 16px;
                width: 100%;
                font-size: 1rem;
            }
            .main-nav a.active::after { display: none; }
            .nav-cta { text-align: center; margin-top: 8px; }
        }

        /* ===== Hero Section ===== */
        .hero {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary-dark);
            overflow: hidden;
            margin-top: 0;
            padding-top: var(--nav-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.5;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% { transform: scale(1.05); }
            100% { transform: scale(1.15); }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 22, 40, 0.88) 0%, rgba(13, 27, 42, 0.70) 50%, rgba(10, 22, 40, 0.88) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            background: rgba(200, 168, 78, 0.15);
            border: 1px solid rgba(200, 168, 78, 0.3);
            border-radius: 50px;
            color: var(--color-accent-light);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 2px;
            margin-bottom: 24px;
            text-transform: uppercase;
        }
        .hero h1 {
            color: var(--color-white);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1.05rem, 1.8vw, 1.25rem);
            color: rgba(255,255,255,0.7);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            color: var(--color-primary-dark);
            border-color: var(--color-accent);
            box-shadow: 0 4px 20px rgba(200, 168, 78, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(200, 168, 78, 0.4);
            color: var(--color-primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-white);
            border-color: rgba(255,255,255,0.3);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(200, 168, 78, 0.08);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.5);
            letter-spacing: 1px;
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero { min-height: 80vh; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.5rem; }
        }

        /* ===== Section Shared ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-subtitle { color: var(--color-white); }
        .section-dark p { color: rgba(255,255,255,0.7); }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            margin-bottom: 16px;
        }
        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }
        .section-badge {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(200, 168, 78, 0.12);
            border-radius: 50px;
            color: var(--color-accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 1.5px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .section-dark .section-badge {
            background: rgba(200, 168, 78, 0.15);
            color: var(--color-accent-light);
        }
        @media (max-width: 768px) {
            .section { padding: var(--spacing-section-mobile) 0; }
            .section-header { margin-bottom: 36px; }
        }

        /* ===== Features / Cards Grid ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .grid-3, .grid-2 { grid-template-columns: 1fr; }
            .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
        }
        @media (max-width: 520px) {
            .grid-4 { grid-template-columns: 1fr; }
        }

        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--color-border-light);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(200, 168, 78, 0.2);
        }
        .feature-card .icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(200, 168, 78, 0.12), rgba(200, 168, 78, 0.06));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.4rem;
            color: var(--color-accent);
        }
        .feature-card h3 {
            margin-bottom: 12px;
            font-size: 1.15rem;
        }
        .feature-card p {
            font-size: 0.92rem;
            margin-bottom: 0;
        }

        /* ===== Category / Guide Cards ===== */
        .guide-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--color-border-light);
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .guide-card .card-img {
            height: 200px;
            background: var(--color-bg-alt);
            position: relative;
            overflow: hidden;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .guide-card:hover .card-img img {
            transform: scale(1.05);
        }
        .guide-card .card-img .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 4px 14px;
            background: rgba(200, 168, 78, 0.9);
            color: var(--color-primary-dark);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .guide-card .card-body {
            padding: 24px;
        }
        .guide-card .card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .guide-card .card-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-bottom: 16px;
        }
        .guide-card .card-footer {
            padding: 0 24px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .guide-card .card-footer .btn-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-footer .btn-link:hover {
            gap: 10px;
            color: var(--color-accent);
        }

        /* ===== Latest Posts / CMS List ===== */
        .post-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .post-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--color-white);
            padding: 20px 24px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--color-border-light);
        }
        .post-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(200, 168, 78, 0.2);
            transform: translateX(4px);
        }
        .post-item .post-cat {
            flex-shrink: 0;
            padding: 4px 14px;
            background: rgba(200, 168, 78, 0.1);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-accent-dark);
        }
        .post-item .post-title {
            flex: 1;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-item:hover .post-title {
            color: var(--color-accent-dark);
        }
        .post-item .post-date {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        .post-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }
        @media (max-width: 768px) {
            .post-item {
                flex-wrap: wrap;
                gap: 12px;
                padding: 16px;
            }
            .post-item .post-title { flex-basis: 100%; order: -1; }
            .post-item .post-cat { order: 0; }
            .post-item .post-date { margin-left: auto; }
        }

        /* ===== Stats / Data Section ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 20px;
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(200, 168, 78, 0.2);
        }
        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-top: 8px;
        }
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(200, 168, 78, 0.2);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover {
            color: var(--color-accent-dark);
        }
        .faq-item .faq-q .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(200, 168, 78, 0.1);
            color: var(--color-accent);
            font-size: 0.75rem;
            transition: var(--transition);
        }
        .faq-item.open .faq-q .faq-icon {
            transform: rotate(180deg);
            background: var(--color-accent);
            color: var(--color-white);
        }
        .faq-item .faq-a {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-item .faq-a p {
            font-size: 0.92rem;
            color: var(--color-text-light);
            margin-bottom: 0;
        }
        .section-dark .faq-item {
            background: rgba(255,255,255,0.04);
            border-color: rgba(255,255,255,0.06);
        }
        .section-dark .faq-item .faq-q {
            color: rgba(255,255,255,0.9);
        }
        .section-dark .faq-item .faq-q:hover {
            color: var(--color-accent-light);
        }
        .section-dark .faq-item .faq-a p {
            color: rgba(255,255,255,0.65);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: var(--color-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-primary {
            font-size: 1.05rem;
            padding: 16px 40px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.6);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.5);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: var(--color-white);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.5);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Additional Utilities ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mt-32 { margin-top: 32px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Article Page Specific ===== */
        .article-hero {
            position: relative;
            padding: 120px 0 60px;
            background: var(--color-primary-dark);
            margin-top: var(--nav-height);
        }
        .article-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.2;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }
        .article-hero h1 {
            color: var(--color-white);
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            max-width: 800px;
        }
        .article-meta {
            display: flex;
            gap: 20px;
            margin-top: 16px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-body {
            padding: 48px 0 80px;
            background: var(--color-white);
        }
        .article-body .container {
            max-width: 800px;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--color-text);
        }
        .article-body .content p {
            margin-bottom: 1.4rem;
        }
        .article-body .content h2, .article-body .content h3 {
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
        }
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
        }
        .article-not-found h2 {
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .article-not-found p {
            color: var(--color-text-muted);
            margin-bottom: 24px;
        }
        .article-not-found .btn {
            display: inline-flex;
        }

        /* ===== Category Page Specific ===== */
        .category-hero {
            position: relative;
            padding: 120px 0 60px;
            background: var(--color-primary-dark);
            margin-top: var(--nav-height);
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .category-hero h1 {
            color: var(--color-white);
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
        }
        .category-hero p {
            color: rgba(255,255,255,0.65);
            font-size: 1.05rem;
            max-width: 600px;
            margin-top: 12px;
        }

        /* ===== Responsive Fine-tuning ===== */
        @media (max-width: 520px) {
            .hero-actions .btn { width: 100%; justify-content: center; }
            .feature-card { padding: 24px 20px; }
            .guide-card .card-body { padding: 18px; }
            .guide-card .card-footer { padding: 0 18px 16px; }
            .faq-item .faq-q { padding: 14px 18px; font-size: 0.92rem; }
            .faq-item .faq-a { padding: 0 18px; }
            .faq-item.open .faq-a { padding: 0 18px 16px; }
            .cta-section { padding: 48px 0; }
            .site-footer { padding: 40px 0 24px; }
            .post-item .post-title { font-size: 0.92rem; }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a5cff;
            --primary-dark: #0d47d9;
            --primary-light: #e8f0ff;
            --accent: #ff6b35;
            --accent-dark: #e55a2b;
            --bg: #f9fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f1724;
            --bg-dark-muted: #1a2538;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
            --shadow-hover: 0 12px 40px rgba(26,92,255,0.14);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --content-width: 780px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: var(--radius-xs); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: 1rem; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .content-container {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        section { padding: 80px 0; }
        .section-title {
            font-size: 2rem;
            margin-bottom: 12px;
            text-align: center;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-light);
            text-align: center;
            margin-bottom: 48px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled { background: rgba(255,255,255,0.98); box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
        }
        .site-logo:hover { color: var(--primary); }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            font-weight: 800;
        }
        .logo-text { font-weight: 700; }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            position: relative;
            padding: 8px 18px;
            border-radius: var(--radius-xs);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .main-nav a:hover { color: var(--primary); background: var(--primary-light); }
        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .main-nav a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(26,92,255,0.25);
        }
        .main-nav a.nav-cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(26,92,255,0.35); }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
        .nav-toggle span { display: block; width: 26px; height: 2.5px; background: var(--text); border-radius: 2px; transition: var(--transition); }
        .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                padding: 20px 24px 32px;
                gap: 12px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
                box-shadow: 0 20px 40px rgba(0,0,0,0.06);
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .main-nav a { width: 100%; text-align: center; padding: 14px 18px; font-size: 1.05rem; }
            .main-nav a.nav-cta { justify-content: center; }
            .main-nav a.active::after { display: none; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 4px; }
            .site-logo { font-size: 1.1rem; gap: 6px; }
            .logo-icon { width: 32px; height: 32px; font-size: 1rem; }
        }

        /* ===== Hero / Banner ===== */
        .article-hero {
            position: relative;
            margin-top: var(--nav-height);
            padding: 100px 0 80px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,36,0.88) 0%, rgba(15,23,36,0.72) 100%);
            z-index: 1;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 24px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
        }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb span { color: rgba(255,255,255,0.9); }
        .article-hero .article-category {
            display: inline-block;
            padding: 6px 16px;
            background: var(--primary);
            color: #fff;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            max-width: 800px;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
        }
        .article-hero .article-meta i { margin-right: 6px; }
        .article-hero .article-meta span { display: inline-flex; align-items: center; }
        @media (max-width: 768px) {
            .article-hero { padding: 80px 0 56px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero .article-meta { gap: 14px; font-size: 0.85rem; flex-wrap: wrap; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.5rem; }
            .article-hero { padding: 64px 0 40px; }
        }

        /* ===== Article Content ===== */
        .article-content-section { padding: 56px 0 80px; background: #fff; }
        .article-body {
            font-size: 1.1rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-body p { margin-bottom: 1.6em; }
        .article-body h2 { font-size: 1.6rem; margin: 2em 0 0.8em; font-weight: 700; }
        .article-body h3 { font-size: 1.3rem; margin: 1.8em 0 0.6em; font-weight: 700; }
        .article-body ul, .article-body ol { margin: 1em 0 1.6em; padding-left: 1.8em; }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.4em; }
        .article-body blockquote {
            margin: 1.6em 0;
            padding: 20px 24px;
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            border-radius: var(--radius-sm);
            color: var(--text);
            font-style: italic;
        }
        .article-body img {
            margin: 2em auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            max-width: 100%;
        }
        .article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
        .article-body a:hover { color: var(--primary-dark); }
        .article-body code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
        }
        .article-body pre {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 1.6em 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .article-body pre code { background: transparent; color: inherit; padding: 0; }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary); color: #fff; }
        .article-notfound {
            text-align: center;
            padding: 80px 20px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-notfound i { font-size: 3rem; color: var(--text-light); margin-bottom: 20px; }
        .article-notfound h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .article-notfound p { color: var(--text-light); margin-bottom: 24px; }
        .article-notfound a { display: inline-block; padding: 12px 32px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); font-weight: 600; }
        .article-notfound a:hover { background: var(--primary-dark); color: #fff; }
        @media (max-width: 768px) {
            .article-body { font-size: 1rem; line-height: 1.8; }
            .article-body h2 { font-size: 1.35rem; }
            .article-body h3 { font-size: 1.15rem; }
        }

        /* ===== Related Articles ===== */
        .related-section {
            background: var(--bg);
            padding: 64px 0;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .related-card .card-body { padding: 20px 20px 24px; }
        .related-card .card-body .card-cat {
            display: inline-block;
            padding: 3px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .related-card .card-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
        .related-card .card-body h3 a { color: var(--text); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body .card-date { font-size: 0.8rem; color: var(--text-light); }
        @media (max-width: 768px) {
            .related-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-card .card-img { height: 160px; }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,36,0.9) 0%, rgba(26,92,255,0.6) 100%);
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 { font-size: 2.2rem; color: #fff; margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto 32px; }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            font-weight: 700;
            transition: all var(--transition);
            box-shadow: 0 8px 28px rgba(255,107,53,0.35);
        }
        .cta-section .cta-btn:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 36px rgba(255,107,53,0.45); }
        @media (max-width: 768px) {
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 1rem; }
            .cta-section .cta-btn { padding: 14px 28px; font-size: 0.95rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 32px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .site-footer .site-logo { color: #fff; margin-bottom: 16px; }
        .site-footer .site-logo:hover { color: var(--primary); }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 320px; }
        .footer-col h4 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 18px; }
        .footer-col ul li { margin-bottom: 12px; }
        .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a { color: rgba(255,255,255,0.55); }
        .footer-bottom a:hover { color: var(--primary); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px 16px; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg); }
        ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-light); }

        /* ===== Print ===== */
        @media print {
            .site-header, .site-footer, .cta-section, .related-section, .nav-toggle { display: none !important; }
            .article-hero { padding: 40px 0; background: #fff !important; margin-top: 0; }
            .article-hero::before { display: none; }
            .article-hero h1 { color: var(--text); }
            .article-hero .breadcrumb, .article-hero .article-meta { color: var(--text-light); }
            .article-hero .breadcrumb a { color: var(--text-light); }
            .article-content-section { padding: 20px 0; }
            body { background: #fff; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f1a2e;
            --primary-light: #1a2a4a;
            --primary-dark: #080f1c;
            --secondary: #c9a44a;
            --secondary-light: #e8c86a;
            --secondary-dark: #a8883a;
            --accent: #d4a853;
            --bg: #f8f6f1;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-lighter: #9ca3af;
            --text-inverse: #ffffff;
            --text-inverse-muted: rgba(255,255,255,0.75);
            --border: #e5e7eb;
            --border-light: rgba(255,255,255,0.12);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0,0,0,0.07);
            --shadow-lg: 0 12px 48px rgba(0,0,0,0.10);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.14);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--nav-height);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        ul { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--text); }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.1rem; }
        p { color: var(--text-light); margin-bottom: 1rem; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            border-radius: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .logo-text { letter-spacing: -0.3px; }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
        }
        .main-nav a:hover { color: var(--primary); background: rgba(15,26,46,0.05); }
        .main-nav a.active {
            color: var(--primary);
            background: rgba(15,26,46,0.06);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark)) !important;
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 14px rgba(201,164,74,0.35);
            transition: all var(--transition) !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201,164,74,0.45) !important;
            background: linear-gradient(135deg, var(--secondary-light), var(--secondary)) !important;
            color: #fff !important;
        }
        .nav-cta i { font-size: 1rem; }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            cursor: pointer;
            background: none;
            border: none;
        }
        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 3px;
            transition: all var(--transition);
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px 60px;
            background: var(--primary-dark);
            overflow: hidden;
        }
        .category-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,46,0.85) 0%, rgba(15,26,46,0.60) 100%);
            z-index: 1;
        }
        .category-hero .container { position: relative; z-index: 2; }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 span { color: var(--secondary); }
        .category-hero .hero-sub {
            font-size: 1.2rem;
            color: var(--text-inverse-muted);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201,164,74,0.18);
            border: 1px solid rgba(201,164,74,0.3);
            padding: 8px 20px;
            border-radius: 50px;
            color: var(--secondary-light);
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .hero-badge i { font-size: 0.85rem; }

        /* ===== Section Shared ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt { background: #fff; }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }
        .section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }
        .section-dark p { color: var(--text-inverse-muted); }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { font-size: 1.1rem; }
        .section-label {
            display: inline-block;
            background: rgba(201,164,74,0.12);
            color: var(--secondary-dark);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-dark .section-label {
            background: rgba(201,164,74,0.2);
            color: var(--secondary-light);
        }

        /* ===== Cards Grid ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .guide-card-img {
            height: 200px;
            background: var(--primary-light);
            position: relative;
            overflow: hidden;
        }
        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .guide-card-img img { transform: scale(1.05); }
        .guide-card-img .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(15,26,46,0.8);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .guide-card-body {
            padding: 24px 22px 26px;
        }
        .guide-card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .guide-card-body p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }
        .guide-card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            font-size: 0.85rem;
            color: var(--text-lighter);
        }
        .guide-card-body .card-meta i { margin-right: 4px; }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 18px;
            font-weight: 600;
            color: var(--secondary-dark);
            font-size: 0.95rem;
            transition: gap var(--transition);
        }
        .card-link:hover { gap: 12px; color: var(--secondary); }

        /* ===== Feature /图文区块 ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-block.reverse { direction: rtl; }
        .feature-block.reverse > * { direction: ltr; }
        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .feature-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-image:hover img { transform: scale(1.02); }
        .feature-content h2 { margin-bottom: 16px; }
        .feature-content p { font-size: 1.05rem; line-height: 1.8; }
        .feature-list {
            margin-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 1rem;
            color: var(--text-light);
        }
        .feature-list li i {
            color: var(--secondary);
            font-size: 1.2rem;
            margin-top: 2px;
            flex-shrink: 0;
        }

        /* ===== Steps / 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .step-item:hover {
            background: rgba(255,255,255,0.08);
            transform: translateY(-4px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--secondary);
            color: var(--primary-dark);
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .step-item h4 { color: #fff; margin-bottom: 8px; }
        .step-item p { color: var(--text-inverse-muted); font-size: 0.9rem; margin-bottom: 0; }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 16px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-number span { color: var(--secondary); }
        .stat-label {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--secondary); box-shadow: var(--shadow); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(15,26,46,0.02); }
        .faq-question i {
            font-size: 1.2rem;
            color: var(--secondary);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p { color: var(--text-light); margin-bottom: 0; font-size: 0.98rem; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 80px 0;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.2rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-inverse-muted);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            padding: 16px 40px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 32px rgba(201,164,74,0.4);
            transition: all var(--transition);
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(201,164,74,0.55);
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-inverse-muted);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-light);
        }
        .footer-brand .site-logo { color: #fff; margin-bottom: 16px; }
        .footer-brand p { font-size: 0.95rem; color: var(--text-inverse-muted); line-height: 1.8; margin-top: 12px; }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: var(--text-inverse-muted);
            font-size: 0.92rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover { color: var(--secondary); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.88rem;
            color: var(--text-lighter);
        }
        .footer-bottom a { color: var(--secondary); }
        .footer-bottom a:hover { color: var(--secondary-light); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            body { padding-top: 64px; }
            :root { --nav-height: 64px; }
            .mobile-toggle { display: flex; }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                border-bottom: 1px solid var(--border);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 18px;
                font-size: 1rem;
            }
            .main-nav a.active::after { display: none; }
            .main-nav a.active { background: rgba(15,26,46,0.06); }
            .nav-cta { justify-content: center; margin-top: 8px; }
            .category-hero { min-height: 300px; padding: 60px 20px 50px; }
            .category-hero h1 { font-size: 2.2rem; }
            .category-hero .hero-sub { font-size: 1rem; }
            .section { padding: 56px 0; }
            .section-header { margin-bottom: 36px; }
            .section-header h2 { font-size: 1.6rem; }
            .grid-3 { grid-template-columns: 1fr; gap: 20px; }
            .grid-2 { grid-template-columns: 1fr; gap: 20px; }
            .feature-block { grid-template-columns: 1fr; gap: 28px; }
            .feature-block.reverse { direction: ltr; }
            .feature-image img { height: 240px; }
            .steps-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .stat-number { font-size: 2rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
            .faq-question { font-size: 0.95rem; padding: 16px 18px; }
        }
        @media (max-width: 520px) {
            .category-hero h1 { font-size: 1.7rem; }
            .category-hero .hero-sub { font-size: 0.9rem; }
            .steps-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-btn { width: 100%; justify-content: center; }
            .guide-card-img { height: 160px; }
        }