/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #0b1e33;
            --color-primary-light: #132d4a;
            --color-primary-dark: #060f1a;
            --color-accent: #d4a843;
            --color-accent-light: #e8c56d;
            --color-accent-dark: #b88d2f;
            --color-bg: #f8f7f4;
            --color-bg-alt: #ffffff;
            --color-bg-dark: #0b1e33;
            --color-text: #1e293b;
            --color-text-light: #64748b;
            --color-text-inverse: #f1f5f9;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 60px rgba(0,0,0,0.16);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        button { font: inherit; cursor: pointer; border: none; background: none; }
        input, textarea { font: inherit; }
        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, 5.5vw, 3.8rem); }
        h2 { font-size: clamp(1.6rem, 3.6vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.4vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 0.8rem; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: 80px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            text-align: center;
            color: var(--color-text-light);
            font-size: 1.1rem;
            max-width: 620px;
            margin: 0 auto 48px;
        }
        .section-divider {
            width: 64px;
            height: 4px;
            background: var(--color-accent);
            border-radius: 4px;
            margin: 16px auto 24px;
        }
        .text-accent { color: var(--color-accent); }
        .text-center { text-align: center; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            line-height: 1.2;
            transition: all var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:focus-visible {
            outline: 3px solid var(--color-accent-light);
            outline-offset: 2px;
        }
        .btn-secondary {
            background: transparent;
            color: var(--color-text-inverse);
            border-color: rgba(255,255,255,0.4);
        }
        .btn-secondary:hover {
            background: rgba(255,255,255,0.12);
            border-color: rgba(255,255,255,0.7);
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(255,255,255,0.5);
            outline-offset: 2px;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-border);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-lg { padding: 18px 44px; font-size: 1.1rem; border-radius: var(--radius-lg); }
        .btn-sm { padding: 10px 20px; font-size: 0.9rem; border-radius: var(--radius-sm); }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(212, 168, 67, 0.14);
            color: var(--color-accent-dark);
        }
        .badge-white {
            background: rgba(255,255,255,0.18);
            color: #fff;
        }
        .badge-sm { padding: 2px 10px; font-size: 0.7rem; }

        /* ===== Card ===== */
        .card {
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body { padding: 24px; }
        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary);
        }
        .card-text {
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin-top: 14px;
        }

        /* ===== Grid ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 30, 51, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--header-height);
            transition: background var(--transition);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-primary-dark);
            font-weight: 800;
        }
        .nav { display: flex; align-items: center; gap: 8px; }
        .nav a {
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.78);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
        }
        .nav a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav a.active {
            color: #fff;
            background: rgba(212, 168, 67, 0.18);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 4px;
        }
        .nav-cta {
            background: var(--color-accent) !important;
            color: var(--color-primary-dark) !important;
            font-weight: 700;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
        }
        .nav-cta:hover { background: var(--color-accent-light) !important; transform: translateY(-1px); }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
        }
        .hamburger span {
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 4px;
            transition: all 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); }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(11, 30, 51, 0.98);
            backdrop-filter: blur(20px);
            padding: 20px 24px 32px;
            flex-direction: column;
            gap: 6px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            box-shadow: var(--shadow-lg);
            z-index: 999;
        }
        .mobile-nav.open { display: flex; }
        .mobile-nav a {
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.8);
            font-weight: 500;
            font-size: 1.05rem;
            transition: all var(--transition);
        }
        .mobile-nav a:hover { background: rgba(255,255,255,0.08); color: #fff; }
        .mobile-nav a.active { background: rgba(212,168,67,0.15); color: var(--color-accent); }
        .mobile-nav .nav-cta {
            margin-top: 12px;
            text-align: center;
            background: var(--color-accent) !important;
            color: var(--color-primary-dark) !important;
            font-weight: 700;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary-dark);
            overflow: hidden;
            padding: 120px 0 80px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero:hover .hero-bg { transform: scale(1); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,30,51,0.88) 0%, rgba(11,30,51,0.62) 50%, rgba(11,30,51,0.88) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 0 24px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 100px;
            background: rgba(212,168,67,0.18);
            color: var(--color-accent-light);
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(212,168,67,0.2);
        }
        .hero h1 {
            color: #fff;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.75);
            max-width: 600px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px 60px;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .hero-stat { text-align: center; }
        .hero-stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.1;
        }
        .hero-stat-label {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            margin-top: 4px;
        }

        /* ===== Features ===== */
        .features { background: var(--color-bg-alt); }
        .feature-card {
            text-align: center;
            padding: 40px 28px;
            border-radius: var(--radius-md);
            background: var(--color-bg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: var(--color-accent);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: rgba(212,168,67,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--color-accent-dark);
        }
        .feature-card h3 { margin-bottom: 12px; }
        .feature-card p { color: var(--color-text-light); font-size: 0.95rem; }

        /* ===== Category Section ===== */
        .category-cards { background: var(--color-bg); }
        .category-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            cursor: pointer;
            aspect-ratio: 4 / 3;
            display: flex;
            align-items: flex-end;
            border: 1px solid var(--color-border-light);
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .category-card:hover img { transform: scale(1.06); }
        .category-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(11,30,51,0.85) 0%, rgba(11,30,51,0.1) 70%);
            z-index: 1;
        }
        .category-card-content {
            position: relative;
            z-index: 2;
            padding: 28px 24px;
            width: 100%;
        }
        .category-card h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .category-card p {
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
        }
        .category-card .badge-white {
            margin-bottom: 12px;
        }

        /* ===== News / CMS List ===== */
        .news-section { background: var(--color-bg-alt); }
        .news-card {
            display: flex;
            gap: 24px;
            padding: 24px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .news-card:last-child { border-bottom: none; }
        .news-card:hover { opacity: 0.85; }
        .news-thumb {
            width: 180px;
            min-height: 120px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-border-light);
        }
        .news-info { flex: 1; min-width: 0; }
        .news-info h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary);
        }
        .news-info h3 a { color: inherit; }
        .news-info h3 a:hover { color: var(--color-accent-dark); }
        .news-info p {
            color: var(--color-text-light);
            font-size: 0.95rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 12px;
            font-size: 0.85rem;
            color: var(--color-text-light);
        }
        .news-meta .badge { font-size: 0.7rem; }
        .news-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--color-text-light);
            font-size: 1.05rem;
            background: var(--color-bg);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }

        /* ===== Process / Steps ===== */
        .process { background: var(--color-bg); }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 36px 20px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .step-card h4 { margin-bottom: 8px; }
        .step-card p { color: var(--color-text-light); font-size: 0.9rem; }
        .step-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-accent);
            opacity: 0.4;
            padding: 0 4px;
        }

        /* ===== FAQ ===== */
        .faq-section { background: var(--color-bg-alt); }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 20px 0;
        }
        .faq-item:first-child { border-top: 1px solid var(--color-border); }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-primary);
            transition: color var(--transition);
            background: none;
            width: 100%;
            text-align: left;
            padding: 4px 0;
        }
        .faq-question:hover { color: var(--color-accent-dark); }
        .faq-question .icon {
            font-size: 1.4rem;
            transition: transform var(--transition);
            flex-shrink: 0;
            color: var(--color-accent);
        }
        .faq-item.open .faq-question .icon { transform: rotate(45deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--color-text-light);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-primary);
            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: 0.1;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 24px;
        }
        .cta-content h2 {
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            max-width: 540px;
            margin: 0 auto 32px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.6);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { margin-bottom: 16px; }
        .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--color-accent-light); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--color-accent-light); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .hero-stat-number { font-size: 2rem; }
        }

        @media (max-width: 768px) {
            .nav { display: none; }
            .hamburger { display: flex; }
            .hero { min-height: 80vh; padding: 100px 0 60px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px 32px; }
            .hero-stat-number { font-size: 1.8rem; }
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
            .process-steps { grid-template-columns: 1fr; gap: 16px; }
            .section { padding: 56px 0; }
            .news-card { flex-direction: column; gap: 12px; }
            .news-thumb { width: 100%; min-height: 180px; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-content { padding: 56px 20px; }
            .hero-actions .btn { width: 100%; max-width: 300px; }
            .step-arrow { display: none; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.7rem; }
            .hero p { font-size: 0.95rem; }
            .section-title { font-size: 1.4rem; }
            .section-subtitle { font-size: 0.95rem; }
            .feature-card { padding: 28px 16px; }
            .category-card-content { padding: 20px 16px; }
            .card-body { padding: 18px; }
            .logo { font-size: 1.1rem; }
            .logo-icon { width: 30px; height: 30px; font-size: 1rem; }
            .btn-lg { padding: 14px 28px; font-size: 1rem; }
            .news-thumb { min-height: 140px; }
            .faq-question { font-size: 0.95rem; }
        }

        /* ===== Animations ===== */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-fade-up {
            animation: fadeUp 0.7s ease forwards;
        }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        .delay-4 { animation-delay: 0.4s; }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #0a1628;
        --primary-light: #132240;
        --secondary: #d4a843;
        --secondary-light: #e8c56a;
        --secondary-dark: #b8922e;
        --accent: #f0b90b;
        --bg-body: #f4f6f9;
        --bg-white: #ffffff;
        --bg-card: #ffffff;
        --bg-dark: #0a1628;
        --text-primary: #1a1a2e;
        --text-secondary: #5a6a7e;
        --text-muted: #8a9aa8;
        --text-white: #ffffff;
        --text-light: rgba(255,255,255,0.85);
        --border-color: #e8ecf1;
        --border-light: rgba(255,255,255,0.12);
        --radius-sm: 6px;
        --radius-md: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --shadow-sm: 0 2px 8px rgba(10,22,40,0.06);
        --shadow-md: 0 8px 30px rgba(10,22,40,0.10);
        --shadow-lg: 0 20px 50px rgba(10,22,40,0.14);
        --shadow-glow: 0 0 30px rgba(212,168,67,0.25);
        --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        --max-width: 1200px;
        --header-height: 76px;
    }

    /* ===== Reset / Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text-primary);
        background: var(--bg-body);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        padding-top: var(--header-height);
    }
    a { color: inherit; text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--secondary); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    button, input, textarea { 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 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    h4 { font-size: 1.25rem; }
    p { margin-bottom: 1rem; color: var(--text-secondary); }
    .container {
        width: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Header / 导航 ===== */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--header-height);
        background: rgba(10,22,40,0.96);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        z-index: 1000;
        transition: background var(--transition);
    }
    .header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.35rem;
        font-weight: 800;
        color: var(--text-white);
        letter-spacing: 0.5px;
        white-space: nowrap;
    }
    .logo-icon { font-size: 1.6rem; line-height: 1; }
    .logo:hover { color: var(--secondary); }
    .nav {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .nav a {
        position: relative;
        padding: 8px 18px;
        font-size: 0.92rem;
        font-weight: 500;
        color: rgba(255,255,255,0.75);
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        letter-spacing: 0.3px;
    }
    .nav a:hover {
        color: var(--text-white);
        background: rgba(255,255,255,0.08);
    }
    .nav a.active {
        color: var(--text-white);
        background: rgba(212,168,67,0.18);
    }
    .nav a.active::after {
        content: '';
        position: absolute;
        bottom: 4px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 2px;
        background: var(--secondary);
        border-radius: 2px;
    }
    .nav-cta {
        background: var(--secondary) !important;
        color: var(--primary) !important;
        font-weight: 700 !important;
        padding: 8px 24px !important;
        border-radius: var(--radius-md) !important;
        box-shadow: 0 4px 14px rgba(212,168,67,0.30);
        margin-left: 8px;
    }
    .nav-cta:hover {
        background: var(--secondary-light) !important;
        box-shadow: 0 6px 24px rgba(212,168,67,0.45) !important;
        transform: translateY(-1px);
    }
    .nav-toggle {
        display: none;
        flex-direction: column;
        gap: 5px;
        padding: 6px;
        background: none;
        border: none;
        cursor: pointer;
    }
    .nav-toggle span {
        display: block;
        width: 26px;
        height: 2px;
        background: var(--text-white);
        border-radius: 2px;
        transition: var(--transition);
    }

    /* ===== 移动端导航 ===== */
    @media (max-width: 768px) {
        .nav-toggle { display: flex; }
        .nav {
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            flex-direction: column;
            background: rgba(10,22,40,0.98);
            backdrop-filter: blur(20px);
            padding: 16px 24px 28px;
            gap: 4px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transform: translateY(-120%);
            opacity: 0;
            pointer-events: none;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .nav.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .nav a {
            width: 100%;
            padding: 14px 16px;
            font-size: 1rem;
            border-radius: var(--radius-sm);
        }
        .nav a.active::after { display: none; }
        .nav a.active { background: rgba(212,168,67,0.15); }
        .nav-cta {
            margin-left: 0;
            margin-top: 8px;
            text-align: center;
        }
    }

    /* ===== Article Hero ===== */
    .article-hero {
        position: relative;
        padding: 80px 0 60px;
        background: var(--primary) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        color: var(--text-white);
        overflow: hidden;
    }
    .article-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(10,22,40,0.88) 30%, rgba(10,22,40,0.60) 80%);
        z-index: 1;
    }
    .article-hero .container { position: relative; z-index: 2; }
    .article-hero .category-badge {
        display: inline-block;
        padding: 5px 16px;
        background: var(--secondary);
        color: var(--primary);
        font-size: 0.82rem;
        font-weight: 700;
        border-radius: 20px;
        letter-spacing: 0.5px;
        margin-bottom: 20px;
    }
    .article-hero h1 {
        font-size: 2.6rem;
        color: var(--text-white);
        max-width: 860px;
        line-height: 1.25;
        margin-bottom: 18px;
        text-shadow: 0 2px 16px rgba(0,0,0,0.20);
    }
    .article-hero .meta {
        display: flex;
        flex-wrap: wrap;
        gap: 18px 30px;
        font-size: 0.92rem;
        color: rgba(255,255,255,0.70);
    }
    .article-hero .meta i { margin-right: 6px; color: var(--secondary); }
    .article-hero .meta span { display: inline-flex; align-items: center; }

    /* ===== Article Body ===== */
    .article-section {
        padding: 48px 0 64px;
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 48px;
    }
    .article-content {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        padding: 40px 44px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-color);
    }
    .article-content h2 {
        font-size: 1.6rem;
        margin-top: 36px;
        margin-bottom: 16px;
        padding-bottom: 10px;
        border-bottom: 2px solid var(--border-color);
    }
    .article-content h3 {
        font-size: 1.25rem;
        margin-top: 28px;
        margin-bottom: 12px;
    }
    .article-content p {
        font-size: 1.05rem;
        line-height: 1.85;
        margin-bottom: 1.2rem;
        color: var(--text-secondary);
    }
    .article-content ul, .article-content ol {
        padding-left: 24px;
        margin-bottom: 1.2rem;
        color: var(--text-secondary);
    }
    .article-content ul li { list-style: disc; margin-bottom: 6px; }
    .article-content ol li { list-style: decimal; margin-bottom: 6px; }
    .article-content img {
        border-radius: var(--radius-md);
        margin: 24px 0;
        box-shadow: var(--shadow-sm);
    }
    .article-content blockquote {
        border-left: 4px solid var(--secondary);
        padding: 16px 24px;
        margin: 24px 0;
        background: #f8f6f0;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-secondary);
        font-style: italic;
    }
    .article-content a { color: var(--secondary-dark); font-weight: 600; }
    .article-content a:hover { color: var(--secondary); text-decoration: underline; }

    /* 文章标签 */
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 36px;
        padding-top: 24px;
        border-top: 1px solid var(--border-color);
    }
    .article-tags .tag {
        display: inline-block;
        padding: 4px 16px;
        font-size: 0.82rem;
        font-weight: 500;
        color: var(--text-secondary);
        background: var(--bg-body);
        border-radius: 20px;
        border: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .article-tags .tag:hover {
        background: var(--secondary);
        color: var(--primary);
        border-color: var(--secondary);
    }

    /* ===== Sidebar ===== */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 32px;
    }
    .sidebar-card {
        background: var(--bg-white);
        border-radius: var(--radius-md);
        padding: 24px 20px;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--border-color);
    }
    .sidebar-card h4 {
        font-size: 1.05rem;
        margin-bottom: 16px;
        color: var(--text-primary);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .sidebar-card h4 i { color: var(--secondary); }
    .sidebar-list a {
        display: flex;
        gap: 12px;
        padding: 12px 0;
        border-bottom: 1px solid var(--border-color);
        align-items: flex-start;
        transition: var(--transition);
    }
    .sidebar-list a:last-child { border-bottom: none; }
    .sidebar-list a:hover { padding-left: 6px; }
    .sidebar-list .thumb {
        width: 64px;
        height: 48px;
        border-radius: var(--radius-sm);
        object-fit: cover;
        flex-shrink: 0;
        background: var(--bg-body);
    }
    .sidebar-list .info { flex: 1; min-width: 0; }
    .sidebar-list .info .title {
        font-size: 0.88rem;
        font-weight: 600;
        color: var(--text-primary);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        line-height: 1.4;
    }
    .sidebar-list .info .date {
        font-size: 0.78rem;
        color: var(--text-muted);
        margin-top: 4px;
    }
    .sidebar-cta {
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        color: var(--text-white);
        border: none;
    }
    .sidebar-cta h4 { color: var(--text-white); }
    .sidebar-cta p { color: rgba(255,255,255,0.70); font-size: 0.92rem; margin-bottom: 16px; }
    .sidebar-cta .btn {
        display: inline-block;
        padding: 10px 28px;
        background: var(--secondary);
        color: var(--primary);
        font-weight: 700;
        border-radius: var(--radius-md);
        transition: var(--transition);
        text-align: center;
    }
    .sidebar-cta .btn:hover {
        background: var(--secondary-light);
        transform: translateY(-2px);
        box-shadow: var(--shadow-glow);
    }

    /* ===== Related Posts ===== */
    .related-section {
        padding: 60px 0 80px;
        background: var(--bg-white);
    }
    .related-section .section-title {
        text-align: center;
        margin-bottom: 40px;
    }
    .related-section .section-title h2 {
        font-size: 1.8rem;
        color: var(--text-primary);
    }
    .related-section .section-title p {
        color: var(--text-muted);
        font-size: 1rem;
        margin-top: 6px;
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .related-card {
        background: var(--bg-body);
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border-color);
        transition: all var(--transition);
    }
    .related-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-md);
        border-color: var(--secondary);
    }
    .related-card .card-img {
        width: 100%;
        height: 180px;
        object-fit: cover;
        background: var(--border-color);
    }
    .related-card .card-body {
        padding: 20px 22px 24px;
    }
    .related-card .card-body .cat {
        font-size: 0.78rem;
        font-weight: 600;
        color: var(--secondary-dark);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        margin-bottom: 6px;
    }
    .related-card .card-body h3 {
        font-size: 1.08rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-body p {
        font-size: 0.9rem;
        color: var(--text-muted);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 0;
    }
    .related-card .card-body .date {
        font-size: 0.8rem;
        color: var(--text-muted);
        margin-top: 12px;
    }

    /* ===== CTA Section ===== */
    .cta-section {
        padding: 64px 0;
        background: var(--primary) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        position: relative;
        color: var(--text-white);
        text-align: center;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(10,22,40,0.85), rgba(10,22,40,0.70));
        z-index: 1;
    }
    .cta-section .container { position: relative; z-index: 2; }
    .cta-section h2 {
        font-size: 2rem;
        color: var(--text-white);
        margin-bottom: 12px;
    }
    .cta-section p {
        color: rgba(255,255,255,0.75);
        font-size: 1.1rem;
        max-width: 600px;
        margin: 0 auto 28px;
    }
    .cta-section .btn-group {
        display: flex;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
    }
    .cta-section .btn-primary {
        padding: 14px 40px;
        background: var(--secondary);
        color: var(--primary);
        font-weight: 700;
        font-size: 1.05rem;
        border-radius: var(--radius-md);
        transition: all var(--transition);
        box-shadow: 0 6px 24px rgba(212,168,67,0.30);
    }
    .cta-section .btn-primary:hover {
        background: var(--secondary-light);
        transform: translateY(-2px);
        box-shadow: 0 10px 36px rgba(212,168,67,0.45);
    }
    .cta-section .btn-outline {
        padding: 14px 40px;
        background: transparent;
        color: var(--text-white);
        font-weight: 600;
        font-size: 1.05rem;
        border-radius: var(--radius-md);
        border: 2px solid rgba(255,255,255,0.30);
        transition: all var(--transition);
    }
    .cta-section .btn-outline:hover {
        border-color: var(--secondary);
        color: var(--secondary);
        background: rgba(212,168,67,0.08);
    }

    /* ===== 错误状态 ===== */
    .error-section {
        padding: 80px 0 100px;
        text-align: center;
        min-height: 50vh;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .error-section .error-icon {
        font-size: 4rem;
        color: var(--text-muted);
        margin-bottom: 20px;
    }
    .error-section h2 {
        font-size: 1.8rem;
        color: var(--text-primary);
        margin-bottom: 12px;
    }
    .error-section p {
        color: var(--text-muted);
        font-size: 1.05rem;
        margin-bottom: 24px;
    }
    .error-section .btn-home {
        display: inline-block;
        padding: 12px 36px;
        background: var(--secondary);
        color: var(--primary);
        font-weight: 700;
        border-radius: var(--radius-md);
        transition: var(--transition);
    }
    .error-section .btn-home:hover {
        background: var(--secondary-light);
        transform: translateY(-2px);
        box-shadow: var(--shadow-glow);
    }

    /* ===== Footer ===== */
    .footer {
        background: var(--primary);
        color: rgba(255,255,255,0.70);
        padding: 56px 0 28px;
        border-top: 1px solid rgba(255,255,255,0.06);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.2fr;
        gap: 40px;
        margin-bottom: 36px;
    }
    .footer-brand .logo {
        font-size: 1.2rem;
        margin-bottom: 14px;
    }
    .footer-brand p {
        font-size: 0.9rem;
        color: rgba(255,255,255,0.50);
        line-height: 1.7;
        margin-bottom: 0;
    }
    .footer-col h4 {
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 16px;
        letter-spacing: 0.5px;
    }
    .footer-col a {
        display: block;
        padding: 6px 0;
        font-size: 0.88rem;
        color: rgba(255,255,255,0.55);
        transition: var(--transition);
    }
    .footer-col a:hover {
        color: var(--secondary);
        padding-left: 4px;
    }
    .footer-col a i { margin-right: 6px; color: var(--secondary); }
    .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        padding-top: 24px;
        border-top: 1px solid rgba(255,255,255,0.06);
        font-size: 0.82rem;
        color: rgba(255,255,255,0.35);
    }
    .footer-bottom a { color: rgba(255,255,255,0.50); }
    .footer-bottom a:hover { color: var(--secondary); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .article-layout { grid-template-columns: 1fr; }
        .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
        .related-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
        :root { --header-height: 64px; }
        h1 { font-size: 1.8rem; }
        h2 { font-size: 1.5rem; }
        h3 { font-size: 1.2rem; }
        .article-hero { padding: 48px 0 40px; }
        .article-hero h1 { font-size: 1.6rem; }
        .article-content { padding: 24px 20px; }
        .article-sidebar { grid-template-columns: 1fr; }
        .related-grid { grid-template-columns: 1fr; }
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
        .cta-section h2 { font-size: 1.5rem; }
        .cta-section .btn-group { flex-direction: column; align-items: center; }
    }
    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        .article-hero h1 { font-size: 1.3rem; }
        .article-content { padding: 16px 14px; }
        .article-hero .meta { gap: 10px 16px; font-size: 0.82rem; }
        .footer-grid { grid-template-columns: 1fr; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .related-card .card-img { height: 140px; }
    }

    /* ===== 辅助 ===== */
    .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
    .text-center { text-align: center; }
    .mt-8 { margin-top: 8px; }
    .mb-8 { margin-bottom: 8px; }
    .gap-4 { gap: 4px; }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
    :root {
        --primary: #e63946;
        --primary-dark: #c1121f;
        --primary-light: #ff6b6b;
        --secondary: #1d3557;
        --secondary-light: #2b4d7a;
        --accent: #f4a261;
        --accent-light: #f9c28b;
        --bg: #f8f9fa;
        --bg-alt: #ffffff;
        --bg-dark: #0d1b2a;
        --text: #1a1a2e;
        --text-light: #6c757d;
        --text-white: #ffffff;
        --border: #dee2e6;
        --border-light: #e9ecef;
        --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.14);
        --radius: 16px;
        --radius-sm: 8px;
        --radius-lg: 24px;
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        --container: 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);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
        padding-top: var(--nav-height);
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover {
        color: var(--primary-dark);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    button,
    input,
    select,
    textarea {
        font-family: inherit;
        font-size: inherit;
    }
    ul,
    ol {
        list-style: none;
    }
    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        line-height: 1.25;
        font-weight: 700;
        color: var(--text);
    }

    /* ===== Container ===== */
    .container {
        max-width: var(--container);
        margin: 0 auto;
        padding: 0 24px;
    }

    /* ===== Header / Nav ===== */
    .header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--nav-height);
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border-light);
        z-index: 1000;
        transition: box-shadow var(--transition);
    }
    .header.scrolled {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    }
    .header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.35rem;
        font-weight: 800;
        color: var(--text);
        letter-spacing: -0.5px;
        transition: opacity var(--transition);
    }
    .logo:hover {
        opacity: 0.85;
        color: var(--text);
    }
    .logo-icon {
        font-size: 1.6rem;
        line-height: 1;
    }
    .nav {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .nav a {
        position: relative;
        padding: 8px 18px;
        border-radius: var(--radius-sm);
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--text-light);
        transition: all var(--transition);
    }
    .nav a:hover {
        color: var(--text);
        background: rgba(0, 0, 0, 0.04);
    }
    .nav a.active {
        color: var(--primary);
        background: rgba(230, 57, 70, 0.08);
        font-weight: 600;
    }
    .nav a.active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        background: var(--primary);
        border-radius: 2px;
    }
    .nav-cta {
        background: var(--primary) !important;
        color: #fff !important;
        padding: 8px 24px !important;
        border-radius: 50px !important;
        font-weight: 600 !important;
        box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
    }
    .nav-cta:hover {
        background: var(--primary-dark) !important;
        color: #fff !important;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(230, 57, 70, 0.4);
    }
    .nav-toggle {
        display: none;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--text);
        cursor: pointer;
        padding: 8px;
        border-radius: var(--radius-sm);
        transition: background var(--transition);
    }
    .nav-toggle:hover {
        background: rgba(0, 0, 0, 0.04);
    }

    /* ===== Hero / Banner ===== */
    .hero-banner {
        position: relative;
        min-height: 320px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a3a 100%);
        overflow: hidden;
        padding: 80px 24px 60px;
    }
    .hero-banner .bg-image {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
        opacity: 0.25;
        z-index: 0;
    }
    .hero-banner .overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(13, 27, 42, 0.9) 0%, rgba(13, 27, 42, 0.4) 100%);
        z-index: 1;
    }
    .hero-banner .hero-content {
        position: relative;
        z-index: 2;
        max-width: 780px;
    }
    .hero-banner .hero-tag {
        display: inline-block;
        padding: 6px 20px;
        border-radius: 50px;
        background: rgba(244, 162, 97, 0.2);
        color: var(--accent);
        font-size: 0.85rem;
        font-weight: 600;
        letter-spacing: 0.5px;
        margin-bottom: 20px;
        border: 1px solid rgba(244, 162, 97, 0.2);
    }
    .hero-banner h1 {
        font-size: clamp(2rem, 5vw, 3.2rem);
        color: var(--text-white);
        margin-bottom: 16px;
        letter-spacing: -0.5px;
    }
    .hero-banner h1 span {
        color: var(--accent);
    }
    .hero-banner p {
        font-size: 1.1rem;
        color: rgba(255, 255, 255, 0.75);
        max-width: 600px;
        margin: 0 auto 28px;
        line-height: 1.7;
    }
    .hero-banner .hero-actions {
        display: flex;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
    }

    /* ===== Buttons ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 14px 32px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 0.95rem;
        border: none;
        cursor: pointer;
        transition: all var(--transition);
        text-decoration: none;
    }
    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
    }
    .btn-primary:hover {
        background: var(--primary-dark);
        color: #fff;
        transform: translateY(-3px);
        box-shadow: 0 8px 28px rgba(230, 57, 70, 0.4);
    }
    .btn-outline {
        background: transparent;
        color: var(--text-white);
        border: 2px solid rgba(255, 255, 255, 0.3);
    }
    .btn-outline:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: var(--text-white);
        color: var(--text-white);
        transform: translateY(-3px);
    }
    .btn-secondary {
        background: var(--secondary);
        color: #fff;
        box-shadow: 0 4px 16px rgba(29, 53, 87, 0.3);
    }
    .btn-secondary:hover {
        background: var(--secondary-light);
        color: #fff;
        transform: translateY(-3px);
        box-shadow: 0 8px 28px rgba(29, 53, 87, 0.4);
    }
    .btn-sm {
        padding: 10px 22px;
        font-size: 0.85rem;
    }

    /* ===== Section ===== */
    .section {
        padding: 80px 0;
    }
    .section-alt {
        background: var(--bg-alt);
    }
    .section-dark {
        background: var(--bg-dark);
        color: var(--text-white);
    }
    .section-dark h2,
    .section-dark h3,
    .section-dark .section-subtitle {
        color: var(--text-white);
    }
    .section-header {
        text-align: center;
        max-width: 720px;
        margin: 0 auto 48px;
    }
    .section-header h2 {
        font-size: clamp(1.6rem, 3.5vw, 2.4rem);
        margin-bottom: 12px;
        letter-spacing: -0.3px;
    }
    .section-subtitle {
        font-size: 1.05rem;
        color: var(--text-light);
        line-height: 1.7;
    }
    .section-dark .section-subtitle {
        color: rgba(255, 255, 255, 0.6);
    }

    /* ===== 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;
    }

    .card {
        background: var(--bg-alt);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: all var(--transition);
        border: 1px solid var(--border-light);
    }
    .card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-hover);
    }
    .card-image {
        width: 100%;
        aspect-ratio: 16 / 9;
        object-fit: cover;
        display: block;
    }
    .card-body {
        padding: 24px;
    }
    .card-body h3 {
        font-size: 1.2rem;
        margin-bottom: 8px;
    }
    .card-body p {
        color: var(--text-light);
        font-size: 0.95rem;
        line-height: 1.6;
    }
    .card-tag {
        display: inline-block;
        padding: 3px 12px;
        border-radius: 50px;
        font-size: 0.75rem;
        font-weight: 600;
        background: rgba(230, 57, 70, 0.08);
        color: var(--primary);
        margin-bottom: 10px;
    }
    .card-badge {
        display: inline-block;
        padding: 2px 10px;
        border-radius: 4px;
        font-size: 0.7rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.3px;
        background: var(--accent);
        color: #fff;
    }

    /* ===== Feature / Icon Cards ===== */
    .icon-card {
        text-align: center;
        padding: 36px 24px;
        background: var(--bg-alt);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        transition: all var(--transition);
        border: 1px solid var(--border-light);
    }
    .icon-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-hover);
    }
    .icon-card .icon {
        font-size: 2.8rem;
        margin-bottom: 16px;
        display: block;
        color: var(--primary);
    }
    .icon-card h3 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    .icon-card p {
        color: var(--text-light);
        font-size: 0.9rem;
        line-height: 1.6;
    }

    /* ===== Stats ===== */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        text-align: center;
    }
    .stat-item {
        padding: 28px 16px;
        background: rgba(255, 255, 255, 0.05);
        border-radius: var(--radius);
        border: 1px solid rgba(255, 255, 255, 0.08);
        transition: background var(--transition);
    }
    .stat-item:hover {
        background: rgba(255, 255, 255, 0.08);
    }
    .stat-number {
        font-size: 2.4rem;
        font-weight: 800;
        color: var(--accent);
        line-height: 1.2;
        margin-bottom: 4px;
    }
    .stat-label {
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.6);
    }

    /* ===== Comparison Table ===== */
    .table-wrap {
        overflow-x: auto;
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        background: var(--bg-alt);
    }
    .table-wrap table {
        width: 100%;
        border-collapse: collapse;
        font-size: 0.9rem;
        min-width: 600px;
    }
    .table-wrap th,
    .table-wrap td {
        padding: 16px 20px;
        text-align: left;
        border-bottom: 1px solid var(--border-light);
    }
    .table-wrap th {
        background: var(--secondary);
        color: #fff;
        font-weight: 600;
        font-size: 0.85rem;
        letter-spacing: 0.3px;
    }
    .table-wrap tr:last-child td {
        border-bottom: none;
    }
    .table-wrap tr:hover td {
        background: rgba(230, 57, 70, 0.03);
    }
    .table-wrap .check {
        color: #2ecc71;
        font-weight: 700;
    }
    .table-wrap .cross {
        color: var(--text-light);
        opacity: 0.4;
    }
    .table-wrap .highlight {
        background: rgba(244, 162, 97, 0.08);
    }
    .table-wrap .highlight td {
        font-weight: 600;
    }

    /* ===== Testimonials ===== */
    .testimonial-card {
        background: var(--bg-alt);
        border-radius: var(--radius);
        padding: 28px;
        box-shadow: var(--shadow);
        border: 1px solid var(--border-light);
        transition: all var(--transition);
    }
    .testimonial-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }
    .testimonial-card .stars {
        color: var(--accent);
        font-size: 1rem;
        margin-bottom: 12px;
        letter-spacing: 2px;
    }
    .testimonial-card blockquote {
        font-size: 0.95rem;
        color: var(--text-light);
        line-height: 1.7;
        margin-bottom: 16px;
        font-style: italic;
    }
    .testimonial-card .author {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .testimonial-card .author-avatar {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: var(--border-light);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        color: var(--text-light);
        font-size: 1.1rem;
        flex-shrink: 0;
    }
    .testimonial-card .author-info strong {
        display: block;
        font-size: 0.9rem;
    }
    .testimonial-card .author-info span {
        font-size: 0.8rem;
        color: var(--text-light);
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: var(--bg-alt);
        border-radius: var(--radius-sm);
        border: 1px solid var(--border-light);
        overflow: hidden;
        transition: box-shadow var(--transition);
    }
    .faq-item:hover {
        box-shadow: var(--shadow);
    }
    .faq-question {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 18px 24px;
        background: none;
        border: none;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text);
        cursor: pointer;
        text-align: left;
        transition: background var(--transition);
        gap: 16px;
    }
    .faq-question:hover {
        background: rgba(0, 0, 0, 0.02);
    }
    .faq-question .icon {
        font-size: 1.2rem;
        color: var(--primary);
        transition: transform var(--transition);
        flex-shrink: 0;
    }
    .faq-item.open .faq-question .icon {
        transform: rotate(45deg);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        padding: 0 24px;
        color: var(--text-light);
        font-size: 0.95rem;
        line-height: 1.7;
    }
    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 0 24px 20px;
    }

    /* ===== CTA ===== */
    .cta-band {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: var(--radius-lg);
        padding: 60px 48px;
        text-align: center;
        color: #fff;
        position: relative;
        overflow: hidden;
    }
    .cta-band::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        opacity: 0.08;
        z-index: 0;
    }
    .cta-band>* {
        position: relative;
        z-index: 1;
    }
    .cta-band h2 {
        font-size: clamp(1.5rem, 3vw, 2.2rem);
        color: #fff;
        margin-bottom: 12px;
    }
    .cta-band p {
        font-size: 1.05rem;
        color: rgba(255, 255, 255, 0.8);
        max-width: 560px;
        margin: 0 auto 28px;
    }
    .cta-band .btn {
        background: #fff;
        color: var(--primary);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    }
    .cta-band .btn:hover {
        background: var(--bg);
        color: var(--primary-dark);
        transform: translateY(-3px);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    }

    /* ===== Footer ===== */
    .footer {
        background: var(--bg-dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 60px 0 32px;
        margin-top: 80px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }
    .footer-brand .logo {
        color: #fff;
        margin-bottom: 14px;
        font-size: 1.3rem;
    }
    .footer-brand p {
        font-size: 0.9rem;
        line-height: 1.7;
        color: rgba(255, 255, 255, 0.5);
        max-width: 360px;
    }
    .footer-col h4 {
        color: #fff;
        font-size: 0.95rem;
        margin-bottom: 16px;
        font-weight: 600;
    }
    .footer-col a {
        display: block;
        color: rgba(255, 255, 255, 0.5);
        font-size: 0.9rem;
        padding: 4px 0;
        transition: color var(--transition);
    }
    .footer-col a:hover {
        color: var(--accent);
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 24px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.35);
    }
    .footer-bottom a {
        color: rgba(255, 255, 255, 0.45);
    }
    .footer-bottom a:hover {
        color: var(--accent);
    }

    /* ===== Breadcrumb ===== */
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: var(--text-light);
        padding: 16px 0;
        flex-wrap: wrap;
    }
    .breadcrumb a {
        color: var(--text-light);
    }
    .breadcrumb a:hover {
        color: var(--primary);
    }
    .breadcrumb .sep {
        color: var(--border);
    }
    .breadcrumb .current {
        color: var(--text);
        font-weight: 500;
    }

    /* ===== Divider ===== */
    .divider {
        width: 60px;
        height: 3px;
        background: var(--primary);
        border-radius: 2px;
        margin: 0 auto 16px;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-4 {
            grid-template-columns: repeat(2, 1fr);
        }
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 768px) {
        .nav {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(16px);
            flex-direction: column;
            padding: 16px 24px 24px;
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
            gap: 4px;
        }
        .nav.open {
            display: flex;
        }
        .nav a {
            padding: 12px 16px;
            width: 100%;
            border-radius: var(--radius-sm);
        }
        .nav a.active::after {
            display: none;
        }
        .nav a.active {
            background: rgba(230, 57, 70, 0.08);
        }
        .nav-cta {
            text-align: center;
            margin-top: 8px;
        }
        .nav-toggle {
            display: block;
        }
        .grid-3,
        .grid-2 {
            grid-template-columns: 1fr;
        }
        .grid-4 {
            grid-template-columns: 1fr 1fr;
        }
        .hero-banner {
            min-height: 260px;
            padding: 60px 20px 40px;
        }
        .hero-banner h1 {
            font-size: 1.8rem;
        }
        .hero-banner p {
            font-size: 0.95rem;
        }
        .section {
            padding: 50px 0;
        }
        .section-header {
            margin-bottom: 32px;
        }
        .cta-band {
            padding: 40px 24px;
            border-radius: var(--radius);
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
        .table-wrap th,
        .table-wrap td {
            padding: 12px 14px;
            font-size: 0.8rem;
        }
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .stat-number {
            font-size: 1.8rem;
        }
    }

    @media (max-width: 520px) {
        .grid-4 {
            grid-template-columns: 1fr;
        }
        .hero-banner h1 {
            font-size: 1.5rem;
        }
        .hero-banner .hero-actions {
            flex-direction: column;
            align-items: center;
        }
        .btn {
            padding: 12px 24px;
            font-size: 0.9rem;
            width: 100%;
            justify-content: center;
        }
        .section-header h2 {
            font-size: 1.4rem;
        }
        .card-body {
            padding: 18px;
        }
        .icon-card {
            padding: 24px 18px;
        }
        .footer {
            padding: 40px 0 24px;
        }
    }

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