/* roulang page: index */
:root {
            --color-primary: #f0c060;
            --color-primary-hover: #f5d080;
            --color-primary-glow: rgba(240, 192, 96, 0.35);
            --color-secondary: #4a90d9;
            --color-bg-deep: #060e1f;
            --color-bg-surface: #0b1a35;
            --color-bg-card: rgba(15, 32, 60, 0.88);
            --color-bg-card-hover: rgba(20, 40, 72, 0.94);
            --color-bg-glass: rgba(8, 20, 44, 0.55);
            --color-bg-glass-solid: rgba(8, 18, 38, 0.94);
            --color-text: #e8e6e3;
            --color-text-strong: #ffffff;
            --color-text-muted: #8899bb;
            --color-text-dim: #5e6f88;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(255, 255, 255, 0.14);
            --color-border-glow: rgba(240, 192, 96, 0.25);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
            --shadow-glow: 0 0 40px rgba(240, 192, 96, 0.12);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --max-width: 1240px;
            --nav-height: 68px;
        }

        *,
        *::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);
            background-color: var(--color-bg-deep);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
            background: var(--color-bg-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 20px rgba(0, 0, 0, 0.25);
        }

        .site-header.scrolled {
            background: var(--color-bg-glass-solid);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: 0 2px 28px rgba(0, 0, 0, 0.45);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-logo {
            font-size: 1.28rem;
            font-weight: 700;
            color: var(--color-text-strong);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: opacity var(--transition-fast);
        }

        .site-logo:hover {
            opacity: 0.85;
        }

        .site-logo .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: radial-gradient(circle at 35% 35%, var(--color-primary), #c8852a);
            box-shadow: 0 0 18px var(--color-primary-glow);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #1a0e00;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 22px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-links a:hover {
            color: var(--color-text-strong);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-links a.active {
            color: var(--color-primary);
            background: rgba(240, 192, 96, 0.08);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2.5px;
            border-radius: 3px;
            background: var(--color-primary);
            box-shadow: 0 0 10px var(--color-primary-glow);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.93rem;
            color: #1a0e00 !important;
            background: linear-gradient(135deg, var(--color-primary), #e0a840);
            box-shadow: 0 4px 16px rgba(240, 192, 96, 0.28);
            transition: all var(--transition) !important;
            letter-spacing: 0.4px;
        }

        .nav-cta-btn:hover {
            background: linear-gradient(135deg, var(--color-primary-hover), #e8b850);
            box-shadow: 0 6px 22px rgba(240, 192, 96, 0.4);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
        }

        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            border-radius: 3px;
            background: var(--color-text-strong);
            transition: all var(--transition-fast);
        }

        .mobile-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(6, 14, 31, 0.45) 0%, rgba(6, 14, 31, 0.82) 60%, var(--color-bg-deep) 100%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                radial-gradient(1px 1px at 18% 22%, rgba(255, 255, 255, 0.55), transparent),
                radial-gradient(1px 1px at 35% 15%, rgba(255, 255, 255, 0.5), transparent),
                radial-gradient(1.5px 1.5px at 52% 28%, rgba(240, 192, 96, 0.6), transparent),
                radial-gradient(1px 1px at 68% 18%, rgba(255, 255, 255, 0.45), transparent),
                radial-gradient(1.5px 1.5px at 80% 32%, rgba(240, 192, 96, 0.5), transparent),
                radial-gradient(1px 1px at 25% 38%, rgba(255, 255, 255, 0.4), transparent),
                radial-gradient(1px 1px at 72% 42%, rgba(255, 255, 255, 0.35), transparent),
                radial-gradient(1.5px 1.5px at 44% 20%, rgba(240, 192, 96, 0.55), transparent),
                radial-gradient(1px 1px at 90% 25%, rgba(255, 255, 255, 0.4), transparent),
                radial-gradient(1px 1px at 12% 45%, rgba(255, 255, 255, 0.3), transparent);
            z-index: 2;
            pointer-events: none;
            animation: twinkle 6s ease-in-out infinite alternate;
        }

        @keyframes twinkle {
            0% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
            100% {
                opacity: 0.7;
            }
        }

        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 780px;
        }

        .hero-badge {
            display: inline-block;
            padding: 7px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--color-primary);
            background: rgba(240, 192, 96, 0.08);
            border: 1px solid var(--color-border-glow);
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: clamp(2.4rem, 5vw, 3.6rem);
            font-weight: 800;
            color: var(--color-text-strong);
            line-height: 1.3;
            letter-spacing: 0.6px;
            margin-bottom: 18px;
        }

        .hero h1 .highlight {
            color: var(--color-primary);
            text-shadow: 0 0 30px var(--color-primary-glow);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 26px;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.4px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), #d49530);
            color: #1a0e00;
            box-shadow: 0 6px 22px rgba(240, 192, 96, 0.3);
        }

        .btn-primary:hover {
            box-shadow: 0 10px 30px rgba(240, 192, 96, 0.45);
            transform: translateY(-2px);
            background: linear-gradient(135deg, var(--color-primary-hover), #e0a840);
        }

        .btn-outline {
            border: 1.5px solid var(--color-border-light);
            color: var(--color-text-strong);
            background: rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(6px);
        }

        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(240, 192, 96, 0.06);
            box-shadow: 0 0 20px rgba(240, 192, 96, 0.1);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 1.5px;
            color: var(--color-primary);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--color-text-strong);
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ========== FEATURES GRID ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
            opacity: 0;
            transition: opacity var(--transition);
            border-radius: 0 0 8px 8px;
        }

        .feature-card:hover {
            background: var(--color-bg-card-hover);
            border-color: var(--color-border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: rgba(240, 192, 96, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--color-primary);
        }

        .feature-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .feature-card p {
            font-size: 0.93rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        /* ========== CATEGORY ENTRY ========== */
        .category-entry-section {
            background: var(--color-bg-surface);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .category-card-lg {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition);
        }

        .category-card-lg:hover {
            border-color: var(--color-border-glow);
            box-shadow: var(--shadow-glow);
        }

        .category-card-lg .card-image {
            height: 320px;
            overflow: hidden;
        }

        .category-card-lg .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .category-card-lg:hover .card-image img {
            transform: scale(1.04);
        }

        .category-card-lg .card-body {
            padding: 32px 28px 32px 8px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .category-card-lg .card-body h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text-strong);
        }

        .category-card-lg .card-body p {
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        .category-card-lg .card-body .btn {
            align-self: flex-start;
            margin-top: 4px;
        }

        /* ========== CMS LIST ========== */
        .cms-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }

        .cms-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cms-item:hover {
            border-color: var(--color-border-glow);
            box-shadow: var(--shadow);
            transform: translateY(-3px);
            background: var(--color-bg-card-hover);
        }

        .cms-item .cms-category {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(240, 192, 96, 0.08);
            padding: 4px 12px;
            border-radius: 12px;
            letter-spacing: 0.5px;
            align-self: flex-start;
        }

        .cms-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-strong);
            line-height: 1.5;
        }

        .cms-item h4 a {
            transition: color var(--transition-fast);
        }

        .cms-item h4 a:hover {
            color: var(--color-primary);
        }

        .cms-item .cms-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.65;
        }

        .cms-item .cms-meta {
            font-size: 0.8rem;
            color: var(--color-text-dim);
            display: flex;
            gap: 14px;
            align-items: center;
        }

        .cms-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--color-text-muted);
            font-size: 1rem;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
            grid-column: 1 / -1;
        }

        /* ========== STEPS ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            counter-increment: step;
        }

        .step-card:hover {
            border-color: var(--color-border-glow);
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), #c8852a);
            color: #1a0e00;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: 0 4px 14px var(--color-primary-glow);
        }

        .step-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ========== STATS ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            text-align: center;
        }

        .stat-item {
            padding: 22px;
            border-radius: var(--radius-lg);
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
        }

        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 1px;
            margin-bottom: 4px;
            text-shadow: 0 0 18px var(--color-primary-glow);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            letter-spacing: 0.5px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--color-border-light);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-strong);
            letter-spacing: 0.3px;
            transition: color var(--transition-fast);
            text-align: left;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            transition: transform var(--transition);
            color: var(--color-text-muted);
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 0.93rem;
            color: var(--color-text-muted);
            line-height: 1.75;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--color-bg-surface);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            text-align: center;
            padding: 70px 24px;
        }

        .cta-section .section-title {
            margin-bottom: 14px;
        }

        .cta-section .section-subtitle {
            margin-bottom: 28px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-deep);
            border-top: 1px solid var(--color-border);
            padding: 40px 24px 28px;
            text-align: center;
        }

        .footer-brand {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--color-primary);
        }

        .footer-copy {
            font-size: 0.8rem;
            color: var(--color-text-dim);
            letter-spacing: 0.3px;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-card-lg {
                grid-template-columns: 1fr;
            }
            .category-card-lg .card-image {
                height: 220px;
            }
            .category-card-lg .card-body {
                padding: 24px 20px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                flex-direction: column;
                background: var(--color-bg-glass-solid);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                padding: 90px 28px 30px;
                gap: 6px;
                transition: right var(--transition);
                border-left: 1px solid var(--color-border);
                box-shadow: -4px 0 30px rgba(0, 0, 0, 0.5);
                align-items: stretch;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links a {
                border-radius: var(--radius);
                padding: 12px 16px;
                font-size: 1rem;
                justify-content: flex-start;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                border-left: 3px solid var(--color-primary);
                border-radius: 0 var(--radius) var(--radius) 0;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-cta-btn {
                justify-content: center;
                margin-top: 8px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .cms-list {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .hero {
                padding: 100px 16px 60px;
                min-height: 90vh;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
                font-size: 0.95rem;
                padding: 12px 20px;
            }
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .category-card-lg .card-image {
                height: 180px;
            }
            .nav-links {
                width: 100%;
                right: -100%;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a1f3a;
            --color-primary-light: #252d52;
            --color-accent: #d4a843;
            --color-accent-hover: #e8bf5a;
            --color-accent-light: #fdf3dc;
            --color-bg: #f7f8fb;
            --color-white: #ffffff;
            --color-text: #1a1a2e;
            --color-text-secondary: #555770;
            --color-text-muted: #8a8ba0;
            --color-border: #e5e6ed;
            --color-border-light: #f0f1f7;
            --color-glass: rgba(26, 31, 58, 0.82);
            --color-glass-light: rgba(255, 255, 255, 0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(26, 31, 58, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 31, 58, 0.09);
            --shadow-lg: 0 8px 32px rgba(26, 31, 58, 0.13);
            --shadow-xl: 0 16px 48px rgba(26, 31, 58, 0.17);
            --shadow-card-hover: 0 10px 36px rgba(26, 31, 58, 0.14);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1260px;
            --header-height: 72px;
        }

        *,
        *::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;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== HEADER & GLASS NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            transition: all var(--transition-smooth);
            background: var(--color-glass);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
        }

        .site-header.scrolled {
            background: rgba(26, 31, 58, 0.96);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.18);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .header-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
        }

        .header-logo:hover {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 25px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .nav-links a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.12);
        }

        .nav-links a.active {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.18);
            font-weight: 600;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.2);
        }

        .nav-cta-btn {
            background: var(--color-accent) !important;
            color: #1a1f3a !important;
            font-weight: 600 !important;
            padding: 9px 22px !important;
            border-radius: 25px !important;
            box-shadow: 0 3px 14px rgba(212, 168, 67, 0.35);
            transition: all var(--transition-fast);
        }

        .nav-cta-btn:hover {
            background: var(--color-accent-hover) !important;
            box-shadow: 0 5px 20px rgba(212, 168, 67, 0.5) !important;
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.5rem;
            padding: 8px;
            cursor: pointer;
            transition: color var(--transition-fast);
            z-index: 1001;
        }

        .mobile-menu-toggle:hover {
            color: var(--color-accent);
        }

        /* ========== CATEGORY BANNER ========== */
        .category-banner {
            position: relative;
            padding-top: calc(var(--header-height) + 56px);
            padding-bottom: 56px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            color: #ffffff;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 31, 58, 0.78) 0%, rgba(26, 31, 58, 0.55) 100%);
            z-index: 1;
        }

        .category-banner .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: #ffffff;
            font-weight: 500;
        }

        .category-banner-title {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            line-height: 1.3;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        }

        .category-banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 640px;
            line-height: 1.7;
        }

        .category-banner-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 18px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            flex-wrap: wrap;
        }

        .category-banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ========== MAIN CONTENT AREA ========== */
        .category-main {
            padding: 52px 0 60px;
            background: var(--color-bg);
        }

        .category-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: start;
        }

        /* ========== ARTICLE GRID ========== */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--color-border);
        }

        .article-card-image {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #eef0f5;
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .article-card:hover .article-card-image img {
            transform: scale(1.05);
        }

        .article-card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--color-accent);
            color: #1a1f3a;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 20px;
            letter-spacing: 0.02em;
            z-index: 2;
        }

        .article-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card-body h3 {
            font-size: 1.12rem;
            font-weight: 650;
            line-height: 1.45;
            margin-bottom: 10px;
            color: var(--color-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-body h3 a {
            color: inherit;
            transition: color var(--transition-fast);
        }

        .article-card-body h3 a:hover {
            color: var(--color-accent);
        }

        .article-card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .article-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--color-text-muted);
            border-top: 1px solid var(--color-border-light);
            padding-top: 14px;
            gap: 10px;
            flex-wrap: wrap;
        }

        .article-card-footer .date {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .article-card-footer .read-more {
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.84rem;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .article-card-footer .read-more:hover {
            color: var(--color-accent-hover);
        }

        /* ========== SIDEBAR ========== */
        .category-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--header-height) + 28px);
        }

        .sidebar-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }

        .sidebar-card h4 {
            font-size: 1.05rem;
            font-weight: 650;
            margin-bottom: 16px;
            color: var(--color-text);
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-accent);
            display: inline-block;
        }

        .sidebar-topic-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .sidebar-topic-list li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
        }

        .sidebar-topic-list li a:hover {
            background: var(--color-accent-light);
            color: var(--color-text);
        }

        .sidebar-topic-list li a .topic-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .sidebar-cta-card {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            text-align: center;
            border: none;
            box-shadow: var(--shadow-md);
        }

        .sidebar-cta-card h4 {
            color: #ffffff;
            border-bottom-color: rgba(255, 255, 255, 0.3);
            font-size: 1.08rem;
        }

        .sidebar-cta-card p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 18px;
            line-height: 1.6;
        }

        .sidebar-cta-btn {
            display: inline-block;
            background: var(--color-accent);
            color: #1a1f3a;
            font-weight: 650;
            padding: 11px 28px;
            border-radius: 25px;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 14px rgba(212, 168, 67, 0.4);
        }

        .sidebar-cta-btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(212, 168, 67, 0.5);
        }

        /* ========== PAGINATION ========== */
        .pagination-section {
            margin-top: 36px;
            display: flex;
            justify-content: center;
        }

        .pagination {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .pagination a,
        .pagination span {
            display: inline-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;
            transition: all var(--transition-fast);
            background: var(--color-white);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
        }

        .pagination a:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent);
            color: var(--color-text);
        }

        .pagination .current {
            background: var(--color-accent);
            color: #1a1f3a;
            font-weight: 650;
            border-color: var(--color-accent);
            box-shadow: 0 2px 8px rgba(212, 168, 67, 0.3);
        }

        .pagination .disabled {
            opacity: 0.4;
            pointer-events: none;
            cursor: default;
        }

        /* ========== FEATURED SECTION ========== */
        .featured-section {
            padding: 48px 0 52px;
            background: var(--color-white);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }

        .section-heading {
            text-align: center;
            margin-bottom: 36px;
        }

        .section-heading h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }

        .section-heading p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            max-width: 520px;
            margin: 0 auto;
        }

        .featured-horizontal {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .featured-mini-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--transition-smooth);
            border: 1px solid transparent;
            cursor: pointer;
        }

        .featured-mini-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            background: var(--color-white);
        }

        .featured-mini-icon {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .featured-mini-content h5 {
            font-size: 0.98rem;
            font-weight: 650;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .featured-mini-content p {
            font-size: 0.84rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            padding: 56px 0;
            background: var(--color-bg);
        }

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 18px 22px;
            font-weight: 650;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            color: var(--color-text);
            user-select: none;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--color-accent);
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 56px 0;
            background: linear-gradient(160deg, var(--color-primary) 0%, #1e2850 100%);
            color: #ffffff;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.78);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-btn-large {
            display: inline-block;
            background: var(--color-accent);
            color: #1a1f3a;
            font-weight: 650;
            padding: 14px 38px;
            border-radius: 30px;
            font-size: 1.05rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            box-shadow: 0 6px 22px rgba(212, 168, 67, 0.4);
        }

        .cta-btn-large:hover {
            background: var(--color-accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(212, 168, 67, 0.5);
        }

        .cta-btn-outline {
            display: inline-block;
            background: transparent;
            color: #ffffff;
            font-weight: 550;
            padding: 13px 36px;
            border-radius: 30px;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.35);
            margin-left: 14px;
            transition: all var(--transition-fast);
        }

        .cta-btn-outline:hover {
            border-color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 40px 0;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.03em;
        }

        .footer-links {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.92rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-copy {
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ========== MOBILE MENU OVERLAY ========== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(26, 31, 58, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .mobile-nav-overlay.active {
            display: flex;
        }

        .mobile-nav-overlay a {
            display: block;
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 500;
            padding: 14px 30px;
            border-radius: 30px;
            transition: all var(--transition-fast);
            letter-spacing: 0.03em;
        }

        .mobile-nav-overlay a:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-nav-overlay a.active {
            background: rgba(255, 255, 255, 0.18);
            color: var(--color-accent);
        }

        .mobile-nav-overlay .mobile-cta {
            background: var(--color-accent);
            color: #1a1f3a !important;
            font-weight: 650;
            margin-top: 6px;
        }

        .mobile-nav-close {
            position: absolute;
            top: 22px;
            right: 26px;
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.8rem;
            cursor: pointer;
            z-index: 1002;
            transition: color var(--transition-fast);
        }

        .mobile-nav-close:hover {
            color: var(--color-accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .category-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .category-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .sidebar-cta-card {
                grid-column: 1 / -1;
            }

            .featured-horizontal {
                grid-template-columns: repeat(2, 1fr);
            }

            .articles-grid {
                gap: 18px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .category-banner {
                padding-top: calc(var(--header-height) + 36px);
                padding-bottom: 40px;
            }

            .category-banner-title {
                font-size: 1.7rem;
            }

            .category-banner-desc {
                font-size: 0.95rem;
            }

            .articles-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .category-sidebar {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .featured-horizontal {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .section-heading h2 {
                font-size: 1.45rem;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .cta-btn-outline {
                margin-left: 0;
                margin-top: 12px;
                display: block;
                width: fit-content;
                margin-left: auto;
                margin-right: auto;
            }

            .pagination a,
            .pagination span {
                min-width: 34px;
                height: 34px;
                font-size: 0.82rem;
                padding: 0 8px;
            }

            .footer-links {
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }

            .header-logo {
                font-size: 1.1rem;
            }

            .category-banner-title {
                font-size: 1.4rem;
            }

            .category-banner {
                padding-top: calc(var(--header-height) + 24px);
                padding-bottom: 32px;
            }

            .article-card-body {
                padding: 14px 16px 16px;
            }

            .article-card-body h3 {
                font-size: 1rem;
            }

            .section-heading h2 {
                font-size: 1.3rem;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }

            .cta-btn-large,
            .cta-btn-outline {
                font-size: 0.9rem;
                padding: 11px 26px;
                display: block;
                width: fit-content;
                margin: 8px auto 0;
            }

            .cta-btn-outline {
                margin-top: 10px;
            }

            .sidebar-card {
                padding: 16px;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #5b8def;
            --color-primary-dark: #4370c9;
            --color-accent: #f0c75e;
            --color-accent-glow: #f7dc81;
            --color-bg-deep: #0a0e1a;
            --color-bg-surface: #11162a;
            --color-bg-card: #161c35;
            --color-bg-card-hover: #1b2240;
            --color-bg-glass: rgba(14, 18, 36, 0.78);
            --color-bg-glass-solid: rgba(14, 18, 36, 0.94);
            --color-text-primary: #e4e6f0;
            --color-text-secondary: #b0b5c8;
            --color-text-weak: #7d8299;
            --color-text-muted: #5e6378;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(255, 255, 255, 0.12);
            --color-border-accent: rgba(240, 199, 94, 0.3);
            --color-success: #4ade80;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(91, 141, 239, 0.15);
            --shadow-accent-glow: 0 0 24px rgba(240, 199, 94, 0.18);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-smooth: 0.38s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 68px;
            --container-max: 1260px;
            --container-narrow: 860px;
            --content-gap: 2.5rem;
            --section-gap: 5rem;
        }

        *,
        *::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);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--color-accent);
        }

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

        ::selection {
            background: rgba(91, 141, 239, 0.35);
            color: #fff;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        .container--narrow {
            max-width: var(--container-narrow);
        }

        /* ========== HEADER / NAV - 玻璃沉浸 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-bg-glass);
            backdrop-filter: blur(22px) saturate(160%);
            -webkit-backdrop-filter: blur(22px) saturate(160%);
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            background: var(--color-bg-glass-solid);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
            border-bottom-color: var(--color-border-light);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 1.5rem;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
            text-decoration: none;
        }

        .logo-link:hover {
            opacity: 0.85;
            color: #fff;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-xs);
            background: linear-gradient(135deg, var(--color-primary), #7b5ce7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            list-style: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 0.55rem 1.1rem;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            text-decoration: none;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-links a.active {
            color: #fff;
            background: rgba(91, 141, 239, 0.18);
            font-weight: 600;
        }

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--color-accent), #d4a843) !important;
            color: #1a1030 !important;
            font-weight: 700 !important;
            padding: 0.6rem 1.4rem !important;
            box-shadow: 0 2px 12px rgba(240, 199, 94, 0.25);
            transition: all var(--transition-base) !important;
        }

        .nav-cta-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 22px rgba(240, 199, 94, 0.4) !important;
            color: #1a1030 !important;
            background: linear-gradient(135deg, var(--color-accent-glow), #e8b84c) !important;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.4rem;
            line-height: 1;
            transition: color var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            color: var(--color-accent);
        }

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            padding: 2.5rem 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            background-color: var(--color-bg-surface);
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 14, 26, 0.92) 0%, rgba(10, 14, 26, 0.55) 45%, rgba(10, 14, 26, 0.35) 100%);
            z-index: 1;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 70%, rgba(91, 141, 239, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(240, 199, 94, 0.06) 0%, transparent 55%);
            z-index: 1;
        }

        .article-banner-content {
            position: relative;
            z-index: 2;
            max-width: var(--container-narrow);
            width: 100%;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .article-banner .category-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.35rem 1rem;
            border-radius: var(--radius-full);
            background: rgba(240, 199, 94, 0.15);
            color: var(--color-accent);
            border: 1px solid var(--color-border-accent);
            margin-bottom: 1rem;
            letter-spacing: 0.03em;
        }

        .article-banner h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: #fff;
            margin-bottom: 0.8rem;
            letter-spacing: 0.01em;
        }

        .article-banner .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.2rem;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
        }

        .article-banner .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .article-banner .article-meta i {
            color: var(--color-accent);
            font-size: 0.85rem;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--color-bg-surface);
            border-bottom: 1px solid var(--color-border);
            padding: 0.8rem 0;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--color-text-weak);
            list-style: none;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .separator {
            color: var(--color-text-muted);
            font-size: 0.7rem;
            margin: 0 0.2rem;
        }

        .breadcrumb .current {
            color: var(--color-text-primary);
            font-weight: 500;
            pointer-events: none;
        }

        /* ========== MAIN CONTENT LAYOUT ========== */
        .article-main {
            padding: 3rem 0 var(--section-gap);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 3rem;
            align-items: start;
        }

        .article-body {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        /* 文章正文富文本样式 */
        .article-body .content-html {
            font-size: 1.02rem;
            line-height: 1.9;
            color: var(--color-text-primary);
        }

        .article-body .content-html h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: #fff;
            margin: 2.2rem 0 1rem;
            padding-bottom: 0.6rem;
            border-bottom: 2px solid var(--color-border-light);
            letter-spacing: 0.01em;
        }

        .article-body .content-html h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #f0f2f8;
            margin: 1.8rem 0 0.8rem;
        }

        .article-body .content-html h4 {
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--color-text-primary);
            margin: 1.4rem 0 0.6rem;
        }

        .article-body .content-html p {
            margin-bottom: 1.1rem;
        }

        .article-body .content-html ul,
        .article-body .content-html ol {
            margin: 1rem 0 1.2rem 1.5rem;
        }

        .article-body .content-html li {
            margin-bottom: 0.45rem;
            padding-left: 0.3rem;
        }

        .article-body .content-html li::marker {
            color: var(--color-primary);
        }

        .article-body .content-html blockquote {
            border-left: 3px solid var(--color-accent);
            padding: 1rem 1.4rem;
            margin: 1.5rem 0;
            background: rgba(240, 199, 94, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-secondary);
            font-style: italic;
        }

        .article-body .content-html img {
            border-radius: var(--radius-md);
            margin: 1.4rem 0;
            box-shadow: var(--shadow-md);
        }

        .article-body .content-html code {
            background: rgba(255, 255, 255, 0.06);
            padding: 0.15em 0.5em;
            border-radius: var(--radius-xs);
            font-family: var(--font-mono);
            font-size: 0.88em;
            color: var(--color-accent);
        }

        .article-body .content-html pre {
            background: var(--color-bg-deep);
            padding: 1.2rem 1.4rem;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.4rem 0;
            border: 1px solid var(--color-border);
        }

        .article-body .content-html pre code {
            background: none;
            padding: 0;
            color: var(--color-text-primary);
            font-size: 0.9rem;
        }

        .article-body .content-html a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(91, 141, 239, 0.3);
        }

        .article-body .content-html a:hover {
            color: var(--color-accent);
            text-decoration-color: var(--color-accent);
        }

        .article-body .content-html table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.4rem 0;
            font-size: 0.92rem;
        }

        .article-body .content-html th,
        .article-body .content-html td {
            padding: 0.7rem 1rem;
            border: 1px solid var(--color-border);
            text-align: left;
        }

        .article-body .content-html th {
            background: rgba(255, 255, 255, 0.04);
            font-weight: 600;
            color: #fff;
        }

        /* 文章底部标签 */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--color-border);
        }

        .article-tag {
            display: inline-block;
            font-size: 0.8rem;
            padding: 0.35rem 0.9rem;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.03);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .article-tag:hover {
            background: rgba(91, 141, 239, 0.12);
            border-color: rgba(91, 141, 239, 0.4);
            color: var(--color-primary);
        }

        /* 分享按钮 */
        .article-share {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            margin-top: 1.5rem;
            flex-wrap: wrap;
        }

        .article-share span {
            font-size: 0.85rem;
            color: var(--color-text-weak);
        }

        .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--color-border);
            background: rgba(255, 255, 255, 0.03);
            color: var(--color-text-secondary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
            font-size: 0.9rem;
        }

        .share-btn:hover {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
            position: sticky;
            top: calc(var(--nav-height) + 1.5rem);
        }

        .sidebar-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: 0.01em;
        }

        .sidebar-card h3 i {
            color: var(--color-accent);
            font-size: 0.9rem;
        }

        .sidebar-post-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }

        .sidebar-post-list li a {
            display: block;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
            padding: 0.5rem 0.7rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            text-decoration: none;
            border-left: 2px solid transparent;
        }

        .sidebar-post-list li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.03);
            border-left-color: var(--color-primary);
        }

        .sidebar-post-list .post-date {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            display: block;
            margin-top: 0.2rem;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .sidebar-tag {
            font-size: 0.78rem;
            padding: 0.3rem 0.8rem;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.03);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .sidebar-tag:hover {
            background: rgba(91, 141, 239, 0.12);
            border-color: rgba(91, 141, 239, 0.4);
            color: var(--color-primary);
        }

        .sidebar-cta-mini {
            background: linear-gradient(135deg, rgba(91, 141, 239, 0.1), rgba(123, 92, 231, 0.08));
            border: 1px solid rgba(91, 141, 239, 0.2);
            text-align: center;
        }

        .sidebar-cta-mini p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin-bottom: 0.8rem;
        }

        .sidebar-cta-mini .btn-sm {
            display: inline-block;
            font-size: 0.82rem;
            padding: 0.5rem 1.3rem;
            border-radius: var(--radius-full);
            background: var(--color-accent);
            color: #1a1030;
            font-weight: 700;
            text-decoration: none;
            transition: all var(--transition-base);
        }

        .sidebar-cta-mini .btn-sm:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-accent-glow);
            color: #1a1030;
        }

        /* ========== NOT FOUND STATE ========== */
        .not-found-block {
            text-align: center;
            padding: 3rem 2rem;
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
        }

        .not-found-block .nf-icon {
            font-size: 3.5rem;
            color: var(--color-text-muted);
            margin-bottom: 1rem;
        }

        .not-found-block h3 {
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 0.6rem;
        }

        .not-found-block p {
            color: var(--color-text-weak);
            margin-bottom: 1.5rem;
        }

        .not-found-block .btn-back {
            display: inline-block;
            padding: 0.7rem 2rem;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition-base);
        }

        .not-found-block .btn-back:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }

        /* ========== RELATED POSTS SECTION ========== */
        .related-section {
            padding: 3rem 0 var(--section-gap);
            background: var(--color-bg-surface);
            border-top: 1px solid var(--color-border);
        }

        .related-section .section-heading {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .related-section .section-heading h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.01em;
        }

        .related-section .section-heading p {
            color: var(--color-text-weak);
            margin-top: 0.4rem;
            font-size: 0.95rem;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .related-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            text-decoration: none;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border-light);
        }

        .related-card .card-img-wrap {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
            background: var(--color-bg-deep);
        }

        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .related-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }

        .related-card .card-body {
            padding: 1.2rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .related-card .card-cat {
            font-size: 0.72rem;
            color: var(--color-accent);
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .related-card .card-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-date {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-top: auto;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 4rem 0;
            background: linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-surface) 100%);
            text-align: center;
        }

        .cta-card {
            background: linear-gradient(135deg, rgba(91, 141, 239, 0.08), rgba(240, 199, 94, 0.05));
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-xl);
            padding: 3rem 2rem;
            max-width: 700px;
            margin: 0 auto;
            box-shadow: var(--shadow-md);
        }

        .cta-card h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.7rem;
        }

        .cta-card p {
            color: var(--color-text-secondary);
            margin-bottom: 1.8rem;
            font-size: 1rem;
        }

        .cta-card .btn-cta {
            display: inline-block;
            padding: 0.85rem 2.8rem;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, var(--color-accent), #d4a843);
            color: #1a1030;
            font-weight: 700;
            font-size: 1.05rem;
            text-decoration: none;
            transition: all var(--transition-base);
            box-shadow: 0 4px 18px rgba(240, 199, 94, 0.3);
        }

        .cta-card .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(240, 199, 94, 0.45);
            color: #1a1030;
        }

        .cta-card .cta-sub {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            margin-top: 1rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-deep);
            border-top: 1px solid var(--color-border);
            padding: 2.5rem 0;
            text-align: center;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
            letter-spacing: 0.02em;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.2rem;
            margin-bottom: 1rem;
        }

        .footer-links a {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-links a:hover {
            color: var(--color-accent);
        }

        .footer-copy {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin: 0;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1100px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 1rem;
            }

            .article-sidebar .sidebar-card {
                flex: 1 1 280px;
                min-width: 240px;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .article-banner h1 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
                --section-gap: 3rem;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-bg-glass-solid);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                padding: 1rem 1.5rem;
                gap: 0.5rem;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                pointer-events: none;
                z-index: 999;
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }

            .nav-links a {
                width: 100%;
                justify-content: center;
                padding: 0.7rem 1rem;
                font-size: 0.95rem;
            }

            .article-banner {
                min-height: 240px;
                padding: 2rem 0;
            }

            .article-banner h1 {
                font-size: 1.4rem;
            }

            .article-body {
                padding: 1.5rem;
                border-radius: var(--radius-md);
            }

            .article-body .content-html {
                font-size: 0.95rem;
                line-height: 1.8;
            }

            .article-body .content-html h2 {
                font-size: 1.3rem;
            }

            .article-body .content-html h3 {
                font-size: 1.1rem;
            }

            .article-sidebar {
                flex-direction: column;
            }

            .article-sidebar .sidebar-card {
                flex: none;
                min-width: auto;
            }

            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }

            .cta-card {
                padding: 2rem 1.2rem;
                border-radius: var(--radius-lg);
            }

            .cta-card h2 {
                font-size: 1.3rem;
            }

            .logo-link {
                font-size: 1.05rem;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .article-banner {
                min-height: 200px;
                padding: 1.5rem 0;
            }

            .article-banner h1 {
                font-size: 1.2rem;
            }

            .article-banner .article-meta {
                font-size: 0.78rem;
                gap: 0.8rem;
            }

            .article-body {
                padding: 1.2rem;
                border-radius: var(--radius-sm);
            }

            .article-body .content-html {
                font-size: 0.9rem;
            }

            .article-body .content-html h2 {
                font-size: 1.15rem;
                margin: 1.6rem 0 0.8rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 0.9rem;
            }

            .related-card .card-title {
                font-size: 0.9rem;
            }

            .breadcrumb {
                font-size: 0.78rem;
            }

            .article-tags {
                gap: 0.4rem;
            }

            .article-tag {
                font-size: 0.72rem;
                padding: 0.3rem 0.7rem;
            }
        }