/* roulang page: index */
:root {
            --color-primary: #0a1128;
            --color-primary-light: #1a2744;
            --color-secondary: #ffd700;
            --color-accent: #7b2ff7;
            --color-accent-light: #9b5de5;
            --color-bg: #f0f2f7;
            --color-surface: #ffffff;
            --color-text: #1e1e2f;
            --color-text-muted: #5a5f7a;
            --color-border: #e2e5f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 4px 12px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 28px rgba(0,0,0,0.08);
            --shadow-lg: 0 18px 48px rgba(0,0,0,0.12);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s ease;
            --max-width: 1280px;
            --header-height: 76px;
            --bottom-nav-height: 64px;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button { font: inherit; border: none; cursor: pointer; background: none; }
        ul { list-style: none; }

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

        /* header & nav */
        .header {
            position: sticky; top: 0; z-index: 100;
            background: rgba(10,17,40,0.92); backdrop-filter: blur(16px);
            box-shadow: 0 2px 20px rgba(0,0,0,0.15);
            height: var(--header-height);
            display: flex; align-items: center;
        }
        .header .container {
            display: flex; align-items: center; justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-weight: 700; font-size: 1.5rem; color: #ffffff;
            letter-spacing: 0.5px;
        }
        .logo i { font-size: 1.8rem; color: var(--color-secondary); }
        .nav-links { display: flex; align-items: center; gap: 32px; }
        .nav-links a {
            color: rgba(255,255,255,0.82); font-weight: 500; font-size: 0.95rem;
            padding: 6px 0; position: relative;
        }
        .nav-links a:hover, .nav-links a.active { color: var(--color-secondary); }
        .nav-links a.active::after {
            content: ''; position: absolute; bottom: -4px; left: 0; width: 100%;
            height: 2px; background: var(--color-secondary); border-radius: 2px;
        }
        .menu-toggle { display: none; color: #fff; font-size: 1.6rem; line-height: 1; }

        /* mobile bottom nav */
        .bottom-nav {
            position: fixed; bottom: 0; left: 0; width: 100%;
            background: rgba(10,17,40,0.95); backdrop-filter: blur(20px);
            border-top: 1px solid rgba(255,255,255,0.1);
            display: none; justify-content: center; align-items: center;
            height: var(--bottom-nav-height); z-index: 101;
            padding: 8px 16px;
        }
        .bottom-nav .tab-item {
            flex: 1; display: flex; flex-direction: column; align-items: center;
            justify-content: center; color: rgba(255,255,255,0.6);
            font-size: 0.72rem; font-weight: 500; gap: 4px;
            transition: var(--transition);
        }
        .bottom-nav .tab-item i { font-size: 1.4rem; line-height: 1; }
        .bottom-nav .tab-item.active, .bottom-nav .tab-item:hover { color: var(--color-secondary); }
        body.has-bottom-nav { padding-bottom: var(--bottom-nav-height); }

        /* hero */
        .hero {
            background: linear-gradient(135deg, #0a1128 0%, #1b2a4e 100%);
            position: relative; overflow: hidden;
            padding: 90px 0 100px;
            color: #fff;
        }
        .hero::before {
            content: ''; position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover; background-position: center;
            opacity: 0.4; mix-blend-mode: overlay;
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-content { max-width: 700px; }
        .hero h1 {
            font-size: 3.2rem; font-weight: 800; line-height: 1.2;
            margin-bottom: 20px; letter-spacing: -0.5px;
            background: linear-gradient(to right, #ffffff, #ffd700);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .hero p {
            font-size: 1.2rem; color: rgba(255,255,255,0.85); margin-bottom: 32px; max-width: 540px;
        }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--color-secondary); color: var(--color-primary);
            font-weight: 700; padding: 14px 34px; border-radius: 40px;
            font-size: 1rem; transition: var(--transition); box-shadow: 0 8px 24px rgba(255,215,0,0.3);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(255,215,0,0.45); }

        /* section */
        .section { padding: 80px 0; }
        .section-title {
            font-size: 2.2rem; font-weight: 700; text-align: center;
            margin-bottom: 16px; color: var(--color-primary);
        }
        .section-subtitle {
            text-align: center; color: var(--color-text-muted); max-width: 600px; margin: 0 auto 48px;
            font-size: 1.05rem;
        }

        /* feature grid */
        .feature-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
        }
        .feature-card {
            background: var(--color-surface); border-radius: var(--radius-md);
            padding: 36px 28px; box-shadow: var(--shadow-sm);
            transition: var(--transition); border: 1px solid var(--color-border);
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .feature-icon {
            width: 56px; height: 56px; background: rgba(123,47,247,0.08);
            border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
            margin-bottom: 20px; color: var(--color-accent); font-size: 1.8rem;
        }
        .feature-card h3 { font-size: 1.25rem; margin-bottom: 12px; }
        .feature-card p { color: var(--color-text-muted); font-size: 0.95rem; }

        /* category entry */
        .category-entry {
            background: var(--color-primary); border-radius: var(--radius-lg);
            overflow: hidden; display: flex; flex-wrap: wrap; align-items: center;
            box-shadow: var(--shadow-md);
        }
        .category-entry-img {
            flex: 1 1 300px; min-height: 260px;
            background: url('/assets/images/coverpic/cover-1.png') center/cover no-repeat;
        }
        .category-entry-text {
            flex: 1 1 300px; padding: 48px 40px; color: #fff;
        }
        .category-entry-text h2 { font-size: 2rem; margin-bottom: 16px; }
        .category-entry-text p { color: rgba(255,255,255,0.8); margin-bottom: 24px; }
        .btn-outline {
            display: inline-flex; align-items: center; gap: 8px;
            border: 2px solid var(--color-secondary); color: var(--color-secondary);
            font-weight: 600; padding: 12px 30px; border-radius: 40px;
            transition: var(--transition);
        }
        .btn-outline:hover { background: var(--color-secondary); color: var(--color-primary); }

        /* news list */
        .news-list {
            display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 28px;
        }
        .news-card {
            background: var(--color-surface); border-radius: var(--radius-md);
            overflow: hidden; box-shadow: var(--shadow-sm);
            transition: var(--transition); border: 1px solid var(--color-border);
        }
        .news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .news-card-img {
            height: 180px; background-size: cover; background-position: center;
        }
        .news-card-body { padding: 24px; }
        .news-card-category {
            display: inline-block; background: rgba(123,47,247,0.1);
            color: var(--color-accent); font-size: 0.75rem; font-weight: 600;
            padding: 4px 12px; border-radius: 20px; margin-bottom: 12px;
        }
        .news-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .news-card p { color: var(--color-text-muted); font-size: 0.9rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card-meta { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 14px; display: flex; justify-content: space-between; }

        /* stats */
        .stats-row {
            display: flex; flex-wrap: wrap; gap: 32px; justify-content: center; text-align: center;
        }
        .stat-item { flex: 1 1 180px; }
        .stat-number {
            font-size: 2.8rem; font-weight: 800; color: var(--color-accent);
            line-height: 1.1; margin-bottom: 6px;
        }
        .stat-label { color: var(--color-text-muted); font-size: 0.95rem; }

        /* steps */
        .steps {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; counter-reset: step;
        }
        .step-card {
            position: relative; text-align: center; padding: 40px 20px 30px;
            background: var(--color-surface); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .step-card::before {
            counter-increment: step; content: counter(step);
            position: absolute; top: -20px; left: 50%; transform: translateX(-50%);
            width: 44px; height: 44px; background: var(--color-accent);
            color: #fff; font-weight: 700; font-size: 1.2rem;
            border-radius: 50%; display: flex; align-items: center; justify-content: center;
            box-shadow: 0 6px 18px rgba(123,47,247,0.35);
        }
        .step-card h3 { margin: 20px 0 10px; font-size: 1.15rem; }
        .step-card p { color: var(--color-text-muted); font-size: 0.9rem; }

        /* faq */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: var(--color-surface); border: 1px solid var(--color-border);
            border-radius: var(--radius-md); margin-bottom: 16px; overflow: hidden;
            transition: var(--transition);
        }
        .faq-question {
            padding: 20px 24px; font-weight: 600; font-size: 1.05rem;
            display: flex; justify-content: space-between; align-items: center;
            cursor: pointer; background: none; width: 100%; text-align: left; color: var(--color-text);
        }
        .faq-answer { padding: 0 24px 20px; color: var(--color-text-muted); font-size: 0.95rem; display: none; }
        .faq-item.open .faq-answer { display: block; }

        /* cta */
        .cta {
            background: linear-gradient(135deg, #0a1128, #311b5c);
            text-align: center; padding: 80px 24px; color: #fff;
            border-radius: var(--radius-lg); margin: 0 auto; max-width: var(--max-width);
        }
        .cta h2 { font-size: 2rem; margin-bottom: 14px; }
        .cta p { color: rgba(255,255,255,0.8); margin-bottom: 32px; }

        /* footer */
        .footer {
            background: var(--color-primary); color: rgba(255,255,255,0.7);
            padding: 48px 0 24px; margin-top: 60px;
        }
        .footer-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
            margin-bottom: 32px;
        }
        .footer h4 { color: #fff; margin-bottom: 14px; font-size: 1rem; }
        .footer a { color: rgba(255,255,255,0.65); font-size: 0.9rem; display: block; margin-bottom: 6px; }
        .footer a:hover { color: var(--color-secondary); }
        .footer-bottom {
            text-align: center; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.85rem;
        }

        @media (max-width: 1024px) {
            .nav-links { display: none; }
            .menu-toggle { display: block; }
            .feature-grid { grid-template-columns: 1fr 1fr; }
            .steps { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.2rem; }
            .hero { padding: 60px 0 70px; }
            .section { padding: 50px 0; }
            .feature-grid, .steps { grid-template-columns: 1fr; }
            .category-entry { flex-direction: column; }
            .footer-grid { grid-template-columns: 1fr; }
            .bottom-nav { display: flex; }
            body.has-bottom-nav { padding-bottom: var(--bottom-nav-height); }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 1rem; }
            .btn-primary { padding: 12px 28px; }
            .news-list { grid-template-columns: 1fr; }
        }

/* roulang page: article */
:root {
            --color-primary: #0f1b3d;
            --color-primary-light: #1a2e5c;
            --color-accent: #3b82f6;
            --color-accent-hover: #2563eb;
            --color-gold: #f59e0b;
            --color-gold-light: #fbbf24;
            --color-bg: #f0f4f8;
            --color-bg-alt: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-weak: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
            --header-height: 68px;
            --bottom-tab-height: 60px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            padding-bottom: 0;
        }

        @media (max-width: 767.98px) {
            body {
                padding-bottom: var(--bottom-tab-height);
            }
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 3px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-narrow {
            max-width: 860px;
        }

        /* ========== HEADER / NAV ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }
        .logo:hover {
            text-decoration: none;
            color: var(--color-primary);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--color-accent);
            background: rgba(59, 130, 246, 0.06);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px;
        }
        .nav-cta {
            background: var(--color-accent) !important;
            color: #fff !important;
            padding: 8px 18px !important;
            border-radius: var(--radius-md) !important;
            font-weight: 600 !important;
        }
        .nav-cta:hover {
            background: var(--color-accent-hover) !important;
            color: #fff !important;
            box-shadow: var(--shadow-md);
        }

        /* Mobile hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: none;
            border: none;
            z-index: 1060;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 767.98px) {
            .hamburger {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-base);
                z-index: 1040;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                justify-content: flex-start;
                font-size: 1rem;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                border-left: 3px solid var(--color-accent);
            }
        }

        /* ========== BOTTOM TAB NAV (Mobile) ========== */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1070;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.06);
            height: var(--bottom-tab-height);
            padding-bottom: env(safe-area-inset-bottom, 0);
        }
        @media (max-width: 767.98px) {
            .bottom-tab-nav {
                display: flex;
            }
        }
        .bottom-tab-nav .tab-inner {
            display: flex;
            width: 100%;
            height: 100%;
        }
        .bottom-tab-nav .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            color: var(--color-text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            text-decoration: none;
            transition: all var(--transition-fast);
            position: relative;
            -webkit-tap-highlight-color: transparent;
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
        }
        .bottom-tab-nav .tab-item i {
            font-size: 1.25rem;
            transition: all var(--transition-fast);
        }
        .bottom-tab-nav .tab-item:hover,
        .bottom-tab-nav .tab-item:active {
            color: var(--color-accent);
            text-decoration: none;
        }
        .bottom-tab-nav .tab-item.active {
            color: var(--color-accent);
            font-weight: 600;
        }
        .bottom-tab-nav .tab-item.active i {
            transform: scale(1.1);
        }
        .bottom-tab-nav .tab-item.active::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 0 0 3px 3px;
        }

        /* ========== MAIN CONTENT ========== */
        .main {
            flex: 1;
        }

        /* Breadcrumb banner */
        .breadcrumb-banner {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 28px 0;
            position: relative;
        }
        .breadcrumb-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 27, 61, 0.75);
            z-index: 0;
        }
        .breadcrumb-banner .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
        }
        .breadcrumb-list a {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .breadcrumb-list a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .breadcrumb-list .sep {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.7rem;
        }
        .breadcrumb-list .current {
            color: #fff;
            font-weight: 500;
        }

        /* Article section */
        .article-section {
            padding: 40px 0 60px;
        }
        .article-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }
        .article-cover {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
            display: block;
        }
        .article-body {
            padding: 32px 36px 40px;
        }
        @media (max-width: 767.98px) {
            .article-body {
                padding: 20px 18px 28px;
            }
            .article-section {
                padding: 24px 0 40px;
            }
            .breadcrumb-banner {
                padding: 20px 0;
            }
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(59, 130, 246, 0.08);
            color: var(--color-accent);
            text-decoration: none;
            transition: all var(--transition-fast);
        }
        .article-category-badge:hover {
            background: rgba(59, 130, 246, 0.16);
            text-decoration: none;
            color: var(--color-accent-hover);
        }
        .article-date {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-date i {
            font-size: 0.85rem;
        }
        .article-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.35;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }
        @media (max-width: 767.98px) {
            .article-title {
                font-size: 1.4rem;
            }
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-content p {
            margin-bottom: 1.2em;
        }
        .article-content h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 1.8em 0 0.6em;
        }
        .article-content h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 1.4em 0 0.5em;
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.2em;
            padding-left: 1.5em;
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 0.4em;
        }
        .article-content blockquote {
            border-left: 4px solid var(--color-accent);
            padding: 14px 20px;
            margin: 1.5em 0;
            background: var(--color-bg-alt);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-weak);
            font-style: italic;
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.5em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-content a {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--color-accent-hover);
        }
        .article-divider {
            border: none;
            height: 1px;
            background: var(--color-border);
            margin: 36px 0 28px;
        }

        /* Not found */
        .not-found-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 60px 40px;
            text-align: center;
        }
        .not-found-icon {
            font-size: 4rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }
        .not-found-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .not-found-desc {
            color: var(--color-text-weak);
            margin-bottom: 24px;
            font-size: 1rem;
        }
        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
            font-size: 0.95rem;
        }
        .btn-back:hover {
            background: var(--color-accent-hover);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* Related posts */
        .related-section {
            padding: 20px 0 50px;
        }
        .related-heading {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-heading::before {
            content: '';
            width: 4px;
            height: 22px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        @media (max-width: 991.98px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        .related-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-base);
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            text-decoration: none;
            color: inherit;
        }
        .related-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            display: block;
        }
        .related-card-body {
            padding: 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-cat {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.03em;
            margin-bottom: 6px;
        }
        .related-card-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-date {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-top: auto;
        }
        .related-empty {
            color: var(--color-text-weak);
            font-size: 0.95rem;
            padding: 16px 0;
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 44px 0 24px;
            margin-top: auto;
        }
        @media (max-width: 767.98px) {
            .footer {
                padding: 32px 0 20px;
                margin-bottom: 0;
            }
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        @media (max-width: 767.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        .footer h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .footer a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            padding: 4px 0;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer p {
            margin: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 18px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }

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

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e40af;
            --primary-hover: #1e3a8a;
            --primary-light: #dbeafe;
            --primary-soft: #eff6ff;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --accent-light: #fef3c7;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --text-on-dark: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.1), 0 4px 10px rgba(0,0,0,0.05);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12), 0 6px 16px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Consolas', monospace;
            --nav-height: 68px;
            --bottom-tab-height: 60px;
            --container-max: 1200px;
            --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: var(--bg);
            line-height: 1.65;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 0;
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        :focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 4px; }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }
        .header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 24px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(30,64,175,0.3);
        }
        .nav-links a.active:hover {
            background: var(--primary-hover);
            color: #fff;
        }
        .header-search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: var(--bg-white);
            color: var(--text-secondary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .header-search-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--border);
            background: var(--bg-white);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--text);
            font-size: 1.2rem;
            transition: all var(--transition);
        }
        .mobile-menu-toggle:hover { border-color: var(--primary); color: var(--primary); }
        @media (max-width: 768px) {
            .header-inner { padding: 0 16px; }
            .nav-links { display: none; }
            .mobile-menu-toggle { display: flex; }
            .header-search-btn { display: none; }
            .logo { font-size: 1.1rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 0.9rem; }
        }

        /* ===== Bottom Tab Navigation (Mobile) ===== */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            height: var(--bottom-tab-height);
            padding-bottom: env(safe-area-inset-bottom, 0);
            box-shadow: 0 -2px 16px rgba(0,0,0,0.06);
        }
        .bottom-tab-nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            max-width: 500px;
            margin: 0 auto;
        }
        .bottom-tab-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-light);
            padding: 4px 16px;
            border-radius: 12px;
            transition: all var(--transition);
            min-width: 64px;
        }
        .bottom-tab-nav a i { font-size: 1.25rem; transition: color var(--transition); }
        .bottom-tab-nav a.active { color: var(--primary); font-weight: 600; }
        .bottom-tab-nav a.active i { color: var(--primary); }
        .bottom-tab-nav a:hover { color: var(--primary); }
        @media (max-width: 768px) {
            .bottom-tab-nav { display: block; }
            body { padding-bottom: calc(var(--bottom-tab-height) + env(safe-area-inset-bottom, 0) + 10px); }
            .footer { padding-bottom: calc(var(--bottom-tab-height) + env(safe-area-inset-bottom, 0) + 30px); }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-light);
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--text-secondary); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb .separator { color: var(--text-light); font-size: 0.7rem; }
        .breadcrumb .current { color: var(--text); font-weight: 600; }

        /* ===== Category Banner ===== */
        .category-banner {
            position: relative;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 40%, #1e40af 100%);
            color: #fff;
            padding: 60px 0 50px;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12;
            z-index: 1;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, rgba(15,23,42,0.9), transparent);
            z-index: 2;
        }
        .category-banner-content {
            position: relative;
            z-index: 3;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .category-banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.25);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
            color: #fde68a;
        }
        .category-banner-badge i { font-size: 0.75rem; color: var(--accent); }
        .category-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin-bottom: 12px;
            line-height: 1.2;
        }
        .category-banner p {
            font-size: 1.1rem;
            color: #cbd5e1;
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .category-stats-row {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .category-stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .category-stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: #fde68a;
            letter-spacing: -0.02em;
            line-height: 1;
        }
        .category-stat-label {
            font-size: 0.85rem;
            color: #94a3b8;
            line-height: 1.3;
        }
        @media (max-width: 768px) {
            .category-banner { padding: 40px 0 36px; }
            .category-banner-content { padding: 0 16px; }
            .category-banner h1 { font-size: 1.8rem; }
            .category-banner p { font-size: 0.95rem; }
            .category-stat-value { font-size: 1.5rem; }
            .category-stats-row { gap: 18px; }
        }

        /* ===== Main Content Area ===== */
        .main-content {
            padding: 40px 0 60px;
            background: var(--bg);
        }
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: start;
        }
        @media (max-width: 1024px) {
            .content-layout { grid-template-columns: 1fr; gap: 30px; }
        }
        @media (max-width: 768px) {
            .main-content { padding: 28px 0 40px; }
        }

        /* ===== Filter Bar ===== */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            margin-bottom: 24px;
        }
        .filter-search {
            flex: 1;
            min-width: 200px;
            position: relative;
        }
        .filter-search i {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-light);
            font-size: 0.95rem;
            pointer-events: none;
        }
        .filter-search input {
            width: 100%;
            padding: 10px 14px 10px 40px;
            border: 1px solid var(--border);
            border-radius: 24px;
            background: var(--bg);
            color: var(--text);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .filter-search input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30,64,175,0.08);
            background: #fff;
        }
        .filter-sort {
            padding: 10px 16px;
            border: 1px solid var(--border);
            border-radius: 24px;
            background: var(--bg-white);
            color: var(--text);
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition);
            min-width: 120px;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'%3E%3C/path%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 36px;
        }
        .filter-sort:focus { outline: none; border-color: var(--primary); }
        .filter-result-count {
            font-size: 0.85rem;
            color: var(--text-secondary);
            white-space: nowrap;
            font-weight: 500;
        }
        @media (max-width: 520px) {
            .filter-bar { padding: 12px 14px; gap: 10px; }
            .filter-search { min-width: 100%; }
            .filter-sort { min-width: 100px; font-size: 0.82rem; }
        }

        /* ===== Article Cards ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 28px;
        }
        @media (max-width: 768px) {
            .article-grid { grid-template-columns: 1fr; gap: 16px; }
        }
        .article-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-slow);
            display: flex;
            flex-direction: column;
            cursor: pointer;
            position: relative;
        }
        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }
        .article-card-image {
            position: relative;
            width: 100%;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--bg);
        }
        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .article-card-image img { transform: scale(1.04); }
        .article-card-image .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0,0,0,0.65);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 5px 12px;
            border-radius: 16px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            z-index: 2;
        }
        .article-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .article-card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            letter-spacing: -0.01em;
        }
        .article-card-body h3 a { color: inherit; }
        .article-card-body h3 a:hover { color: var(--primary); }
        .article-card-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .article-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-light);
            padding-top: 8px;
            border-top: 1px solid var(--border-light);
        }
        .article-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .article-card-meta i { font-size: 0.7rem; }

        /* ===== Pagination ===== */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .pagination a, .pagination span {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid var(--border);
            background: var(--bg-white);
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .pagination .current {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(30,64,175,0.3);
        }
        .pagination .disabled {
            opacity: 0.45;
            pointer-events: none;
            cursor: default;
        }
        @media (max-width: 520px) {
            .pagination a, .pagination span { min-width: 34px; height: 34px; font-size: 0.82rem; padding: 0 8px; border-radius: 17px; }
        }

        /* ===== Sidebar ===== */
        .sidebar { display: flex; flex-direction: column; gap: 24px; }
        @media (max-width: 1024px) {
            .sidebar { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 640px) {
            .sidebar { grid-template-columns: 1fr; }
        }
        .sidebar-widget {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-widget h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget h4 i { color: var(--primary); font-size: 0.85rem; }
        .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
        .tag-cloud a {
            padding: 6px 14px;
            border-radius: 18px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--bg);
            color: var(--text-secondary);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .tag-cloud a:hover {
            background: var(--primary-soft);
            color: var(--primary);
            border-color: var(--primary-light);
        }
        .sidebar-article-list { display: flex; flex-direction: column; gap: 12px; }
        .sidebar-article-item {
            display: flex;
            gap: 10px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .sidebar-article-item:last-child { border-bottom: none; padding-bottom: 0; }
        .sidebar-article-item:hover { opacity: 0.8; }
        .sidebar-article-thumb {
            width: 64px;
            height: 48px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg);
        }
        .sidebar-article-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .sidebar-article-info h5 {
            font-size: 0.85rem;
            font-weight: 600;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            color: var(--text);
        }
        .sidebar-article-info span {
            font-size: 0.72rem;
            color: var(--text-light);
            margin-top: 3px;
            display: block;
        }

        /* ===== Subscribe CTA ===== */
        .subscribe-cta {
            background: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #2563eb 100%);
            border-radius: var(--radius-xl);
            padding: 44px 36px;
            text-align: center;
            color: #fff;
            margin-top: 16px;
            position: relative;
            overflow: hidden;
        }
        .subscribe-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
        }
        .subscribe-cta > * { position: relative; z-index: 1; }
        .subscribe-cta h3 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }
        .subscribe-cta p {
            font-size: 0.95rem;
            color: #bfdbfe;
            margin-bottom: 20px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border-radius: 28px;
            border: 1px solid rgba(255,255,255,0.3);
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 0.9rem;
        }
        .subscribe-form input::placeholder { color: #bfdbfe; }
        .subscribe-form input:focus { outline: none; border-color: #fff; background: rgba(255,255,255,0.22); }
        .btn-subscribe {
            padding: 12px 28px;
            border-radius: 28px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-subscribe:hover {
            background: #fde68a;
            color: #92400e;
            box-shadow: 0 6px 20px rgba(0,0,0,0.2);
            transform: translateY(-1px);
        }
        @media (max-width: 520px) {
            .subscribe-cta { padding: 30px 18px; }
            .subscribe-cta h3 { font-size: 1.2rem; }
            .subscribe-form input { min-width: 100%; }
            .btn-subscribe { width: 100%; }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            padding: 50px 0 28px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-grid h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .footer-grid p, .footer-grid a {
            font-size: 0.88rem;
            color: #94a3b8;
            line-height: 1.8;
        }
        .footer-grid a {
            display: block;
            transition: color var(--transition);
        }
        .footer-grid a:hover { color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: #64748b;
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .footer { padding: 36px 0 20px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .footer-grid > div:first-child { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 22px; }
            .footer-grid > div:first-child { grid-column: auto; }
        }

        /* ===== Utility Classes ===== */
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .text-accent { color: var(--accent); }
        .text-primary { color: var(--primary); }
        .fw-700 { font-weight: 700; }

        /* ===== Scroll animations ===== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in {
            animation: fadeInUp 0.5s ease-out forwards;
        }

        /* ===== No results ===== */
        .no-results {
            text-align: center;
            padding: 50px 20px;
            color: var(--text-secondary);
        }
        .no-results i { font-size: 3rem; color: var(--text-light); margin-bottom: 16px; display: block; }
        .no-results h3 { font-size: 1.2rem; color: var(--text); margin-bottom: 6px; }