/* roulang page: index */
:root {
            --primary: #1a4b8c;
            --primary-light: #3a7bd5;
            --primary-dark: #0f2d55;
            --accent: #c7922e;
            --accent-light: #f0d68a;
            --bg-dark: #0a0f1a;
            --bg-surface: #f8f9fc;
            --text-body: #1f2937;
            --text-muted: #6b7280;
            --border-color: #e5e7eb;
            --radius-lg: 0.75rem;
            --radius-xl: 1rem;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.14);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-surface);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s, opacity 0.2s;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        @media (min-width: 768px) {
            .container {
                padding: 0 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 2.5rem;
            }
        }

        /* Top Bar */
        .top-bar {
            background: var(--bg-dark);
            color: #cbd5e1;
            font-size: 0.8rem;
            padding: 0.4rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .top-bar a {
            color: #e2e8f0;
        }
        .top-bar a:hover {
            color: var(--accent-light);
        }

        /* Navigation */
        .main-nav {
            background: #ffffff;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 50;
            transition: box-shadow 0.3s;
        }
        .main-nav.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
        }
        .nav-logo {
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .nav-logo span.tag {
            font-size: 0.65rem;
            background: var(--accent);
            color: #fff;
            padding: 0.1rem 0.45rem;
            border-radius: 999px;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-left: 0.25rem;
        }
        .nav-link {
            font-weight: 500;
            font-size: 0.9rem;
            padding: 0.5rem 1rem;
            border-radius: 0.5rem;
            color: #374151;
            transition: background 0.2s, color 0.2s;
        }
        .nav-link:hover {
            background: #f1f5f9;
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-cta {
            background: var(--accent);
            color: #fff !important;
            padding: 0.45rem 1.25rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.85rem;
            transition: background 0.2s, transform 0.2s;
        }
        .nav-cta:hover {
            background: #b07d22;
            transform: translateY(-1px);
        }
        .mobile-menu-btn {
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary-dark);
            cursor: pointer;
            padding: 0.25rem;
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #0a0f1a 0%, #1a2a4a 50%, #0f2d55 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 75, 140, 0.25) 0%, transparent 70%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 4rem 1.5rem;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(199, 146, 46, 0.2);
            border: 1px solid rgba(199, 146, 46, 0.35);
            color: var(--accent-light);
            padding: 0.3rem 1.2rem;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.15;
            color: #ffffff;
            margin-bottom: 1.25rem;
            letter-spacing: -0.02em;
        }
        .hero-title .highlight {
            color: var(--accent);
            position: relative;
        }
        .hero-title .highlight::after {
            content: '';
            position: absolute;
            bottom: 0.05em;
            left: 0;
            right: 0;
            height: 0.12em;
            background: var(--accent);
            opacity: 0.4;
            border-radius: 4px;
        }
        .hero-sub {
            font-size: 1.1rem;
            color: #cbd5e1;
            max-width: 620px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 0.75rem 2rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: background 0.25s, transform 0.2s, box-shadow 0.25s;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary:hover {
            background: #b07d22;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(199, 146, 46, 0.35);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            padding: 0.75rem 2rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            transition: background 0.25s, border-color 0.25s, transform 0.2s;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem 3.5rem;
            justify-content: center;
            margin-top: 3rem;
            padding-top: 2.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat-item .num i {
            color: var(--accent);
            margin-right: 0.3rem;
            font-size: 1.4rem;
        }
        .hero-stat-item .label {
            font-size: 0.8rem;
            color: #94a3b8;
            margin-top: 0.15rem;
        }

        /* Section Common */
        .section {
            padding: 4.5rem 0;
        }
        .section-dark {
            background: var(--bg-dark);
            color: #e2e8f0;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 0.5rem;
            color: var(--primary-dark);
        }
        .section-sub {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 2.5rem;
            font-size: 1rem;
        }
        .section-title-center {
            text-align: center;
        }
        .section-sub-center {
            text-align: center;
        }
        .title-accent {
            display: inline-block;
            width: 48px;
            height: 3px;
            background: var(--accent);
            border-radius: 6px;
            margin-bottom: 0.75rem;
        }

        /* Cards */
        .card {
            background: #ffffff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            border: 1px solid rgba(229, 231, 235, 0.5);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: #f1f5f9;
        }
        .card-body {
            padding: 1.5rem;
        }
        .card-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
            margin-bottom: 0.6rem;
        }
        .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--primary-dark);
            line-height: 1.4;
        }
        .card-text {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .card-meta {
            font-size: 0.78rem;
            color: #9ca3af;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-top: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px solid #f1f5f9;
        }

        /* Feature Grid */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 640px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .feature-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #f1f5f9;
            transition: transform 0.25s, box-shadow 0.25s;
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
        }
        .feature-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 1rem;
            display: inline-block;
            background: #eff6ff;
            width: 60px;
            height: 60px;
            line-height: 60px;
            border-radius: 50%;
            text-align: center;
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--primary-dark);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Category Cards */
        .cat-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media (min-width: 640px) {
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .cat-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .cat-card {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s, box-shadow 0.3s;
            border: 1px solid #f1f5f9;
        }
        .cat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .cat-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .cat-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(10, 15, 26, 0.7) 0%, transparent 60%);
            pointer-events: none;
        }
        .cat-card .cat-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }
        .cat-card .cat-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.25rem;
        }
        .cat-card .cat-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0.75rem;
        }
        .cat-card .cat-link {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .cat-card .cat-link:hover {
            color: var(--accent);
        }

        /* Post List (CMS) */
        .post-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 640px) {
            .post-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .post-list {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .post-item {
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            overflow: hidden;
            transition: transform 0.25s, box-shadow 0.25s;
            border: 1px solid #f1f5f9;
        }
        .post-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
        }
        .post-item .post-img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            background: #e2e8f0;
        }
        .post-item .post-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }
        .post-item .post-cat {
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--primary);
            background: #eff6ff;
            padding: 0.15rem 0.6rem;
            border-radius: 999px;
            display: inline-block;
            margin-bottom: 0.4rem;
        }
        .post-item .post-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.4;
            margin-bottom: 0.3rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-item .post-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-item .post-meta {
            font-size: 0.75rem;
            color: #9ca3af;
            margin-top: 0.65rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        /* Process / Timeline */
        .process-steps {
            display: flex;
            flex-direction: column;
            gap: 2rem;
            max-width: 780px;
            margin: 0 auto;
        }
        @media (min-width: 768px) {
            .process-steps {
                flex-direction: row;
                justify-content: space-between;
                gap: 1.5rem;
            }
        }
        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            line-height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 16px rgba(26, 75, 140, 0.3);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
            color: var(--primary-dark);
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .process-step::after {
            content: '';
            position: absolute;
            top: 24px;
            right: -1rem;
            width: 2rem;
            height: 2px;
            background: #d1d5db;
            display: none;
        }
        @media (min-width: 768px) {
            .process-step:not(:last-child)::after {
                display: block;
            }
        }
        .process-step:last-child::after {
            display: none;
        }

        /* FAQ */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-lg);
            margin-bottom: 0.75rem;
            border: 1px solid #f1f5f9;
            overflow: hidden;
            transition: box-shadow 0.2s;
        }
        .faq-item:hover {
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
        }
        .faq-question {
            padding: 1.1rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--primary-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #fafbfc;
            transition: background 0.2s;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            background: #f1f5f9;
        }
        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s;
            font-size: 0.85rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.1rem;
            font-size: 0.9rem;
            color: #4b5563;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #0a1f3d 0%, #1a3f73 50%, #0f2d55 100%);
            padding: 4rem 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
        }
        .cta-content p {
            font-size: 1rem;
            color: #cbd5e1;
            max-width: 520px;
            margin: 0 auto 1.75rem;
        }
        .cta-content .btn-primary {
            font-size: 1.05rem;
            padding: 0.85rem 2.5rem;
        }

        /* Footer */
        .footer {
            background: var(--bg-dark);
            color: #94a3b8;
            padding: 3.5rem 0 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        .footer-brand .nav-logo {
            color: #e2e8f0;
            margin-bottom: 0.75rem;
        }
        .footer-brand .nav-logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.85rem;
            max-width: 320px;
            line-height: 1.7;
        }
        .footer h4 {
            color: #e2e8f0;
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 0.4rem;
        }
        .footer ul li a {
            font-size: 0.85rem;
            color: #94a3b8;
            transition: color 0.2s;
        }
        .footer ul li a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.25rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            align-items: center;
            font-size: 0.78rem;
            color: #6b7280;
        }
        @media (min-width: 640px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }
        .footer-bottom a {
            color: #94a3b8;
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* Empty state */
        .empty-state {
            text-align: center;
            padding: 2.5rem 1rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            background: #f9fafb;
            border-radius: var(--radius-xl);
            border: 1px dashed #d1d5db;
        }
        .empty-state i {
            font-size: 2.5rem;
            color: #d1d5db;
            margin-bottom: 0.75rem;
            display: block;
        }

        /* Responsive */
        @media (max-width: 639px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-sub {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .hero-stats {
                gap: 1.5rem 2rem;
            }
            .hero-stat-item .num {
                font-size: 1.5rem;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .nav-link {
                font-size: 0.85rem;
                padding: 0.4rem 0.7rem;
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
            .process-step::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (min-width: 640px) and (max-width: 1023px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .post-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* Mobile nav */
        .mobile-nav {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border-color);
            padding: 0.75rem 1.25rem;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav a {
            display: block;
            padding: 0.6rem 0;
            font-weight: 500;
            border-bottom: 1px solid #f1f5f9;
            color: #374151;
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.active {
            color: var(--primary);
        }
        @media (max-width: 767px) {
            .desktop-nav {
                display: none;
            }
            .mobile-nav.open {
                display: block;
            }
        }
        @media (min-width: 768px) {
            .mobile-nav {
                display: none !important;
            }
            .desktop-nav {
                display: flex !important;
            }
            .mobile-menu-btn {
                display: none !important;
            }
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f5f9;
        }
        ::-webkit-scrollbar-thumb {
            background: #94a3b8;
            border-radius: 6px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #6b7280;
        }

        /* Selection */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* Skeleton loading */
        .skeleton {
            background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
            background-size: 200% 100%;
            animation: skeleton-pulse 1.5s ease-in-out infinite;
            border-radius: 0.5rem;
        }
        @keyframes skeleton-pulse {
            0% {
                background-position: 200% 0;
            }
            100% {
                background-position: -200% 0;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --accent: #e94560;
            --accent-hover: #d63850;
            --accent-glow: rgba(233, 69, 96, 0.35);
            --gold: #f5a623;
            --gold-light: #f7c948;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222240;
            --text-primary: #f0f0f5;
            --text-secondary: #a0a0b8;
            --text-muted: #6b6b85;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(233, 69, 96, 0.2);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 40px rgba(233, 69, 96, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; transition: var(--transition); }
        ul { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 900px; margin: 0 auto; padding: 0 24px; }

        /* ===== 导航 ===== */
        .main-nav {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .main-nav .container { display: flex; align-items: center; justify-content: space-between; padding-top: 8px; padding-bottom: 8px; }
        .nav-logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.3rem; font-weight: 800; color: #fff;
            letter-spacing: -0.5px;
        }
        .nav-logo i { color: var(--accent); font-size: 1.5rem; }
        .nav-logo .tag {
            background: var(--accent); color: #fff; font-size: 0.65rem;
            font-weight: 700; padding: 2px 10px; border-radius: 20px;
            letter-spacing: 0.3px; text-transform: uppercase;
        }
        .desktop-nav { display: flex; align-items: center; gap: 4px; }
        .nav-link {
            padding: 8px 18px; border-radius: 8px; font-size: 0.9rem;
            font-weight: 500; color: var(--text-secondary); transition: var(--transition);
            position: relative;
        }
        .nav-link:hover { color: #fff; background: rgba(255,255,255,0.06); }
        .nav-link.active { color: #fff; background: rgba(233, 69, 96, 0.15); }
        .nav-link.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; background: var(--accent); border-radius: 4px;
        }
        .nav-cta {
            padding: 8px 22px; border-radius: 30px; font-size: 0.85rem; font-weight: 600;
            background: linear-gradient(135deg, var(--accent), #ff6b81); color: #fff;
            box-shadow: 0 4px 20px var(--accent-glow); transition: var(--transition);
            display: flex; align-items: center; gap: 6px;
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--accent-glow); color: #fff; }
        .mobile-menu-btn {
            display: none; background: none; border: none; color: #fff;
            font-size: 1.6rem; cursor: pointer; padding: 4px 8px;
        }
        .mobile-nav {
            display: none; flex-direction: column; gap: 2px;
            padding: 0 24px 18px; border-top: 1px solid var(--border-color);
            background: rgba(15,15,26,0.98);
        }
        .mobile-nav a {
            padding: 14px 16px; border-radius: 10px; font-size: 1rem; font-weight: 500;
            color: var(--text-secondary); transition: var(--transition);
        }
        .mobile-nav a:hover, .mobile-nav a.active { color: #fff; background: rgba(255,255,255,0.06); }
        .mobile-nav a.active { color: var(--accent); background: rgba(233,69,96,0.1); }

        /* ===== Hero ===== */
        .hero-category {
            position: relative; min-height: 420px; display: flex; align-items: center;
            padding: 120px 0 80px; overflow: hidden;
            background: var(--bg-dark);
        }
        .hero-category-bg {
            position: absolute; inset: 0; z-index: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.4; filter: brightness(0.6) saturate(1.2);
        }
        .hero-category-bg::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(15,15,26,0.92) 30%, rgba(26,26,46,0.7) 70%, rgba(15,15,26,0.95) 100%);
        }
        .hero-category .container { position: relative; z-index: 2; }
        .hero-category h1 {
            font-size: 3.2rem; font-weight: 900; line-height: 1.2; margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 40%, var(--accent) 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-category .subtitle {
            font-size: 1.15rem; color: var(--text-secondary); max-width: 600px;
            line-height: 1.7; margin-bottom: 28px;
        }
        .hero-category .stats-row {
            display: flex; flex-wrap: wrap; gap: 32px; margin-top: 12px;
        }
        .hero-category .stat-item {
            display: flex; flex-direction: column; gap: 2px;
        }
        .hero-category .stat-num {
            font-size: 1.8rem; font-weight: 800; color: #fff;
        }
        .hero-category .stat-num span { color: var(--accent); }
        .hero-category .stat-label {
            font-size: 0.8rem; color: var(--text-muted); letter-spacing: 0.5px;
        }
        .hero-badges {
            display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px;
        }
        .hero-badges span {
            display: inline-flex; align-items: center; gap: 5px;
            background: rgba(233, 69, 96, 0.15); border: 1px solid rgba(233, 69, 96, 0.25);
            padding: 4px 14px; border-radius: 30px; font-size: 0.78rem; font-weight: 500;
            color: var(--gold-light);
        }
        .hero-badges span i { font-size: 0.7rem; }

        /* ===== 通用板块 ===== */
        .section { padding: 80px 0; }
        .section-dark { background: rgba(255,255,255,0.02); }
        .section-heading {
            text-align: center; margin-bottom: 50px;
        }
        .section-heading h2 {
            font-size: 2.2rem; font-weight: 800; margin-bottom: 12px;
            background: linear-gradient(135deg, #fff 50%, var(--accent) 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-heading p {
            color: var(--text-secondary); font-size: 1.05rem; max-width: 600px;
            margin: 0 auto; line-height: 1.7;
        }
        .section-heading .accent-line {
            width: 60px; height: 4px; background: var(--accent); border-radius: 4px;
            margin: 14px auto 0; box-shadow: 0 0 20px var(--accent-glow);
        }

        /* ===== 卡片通用 ===== */
        .card {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius); padding: 28px 24px;
            transition: var(--transition); position: relative; overflow: hidden;
        }
        .card:hover { border-color: var(--border-glow); transform: translateY(-6px); box-shadow: var(--shadow-card); }
        .card .card-icon {
            width: 52px; height: 52px; border-radius: 14px;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.4rem; color: #fff; margin-bottom: 16px;
            background: linear-gradient(135deg, var(--accent), #ff6b81);
            box-shadow: 0 8px 24px var(--accent-glow);
        }
        .card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: #fff; }
        .card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }
        .card .badge-group { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }

        /* ===== 攻略分类网格 ===== */
        .category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .category-card {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius); padding: 32px 20px 24px;
            text-align: center; transition: var(--transition); cursor: default;
        }
        .category-card:hover { border-color: var(--border-glow); transform: translateY(-4px); box-shadow: var(--shadow-card); }
        .category-card .icon-wrap {
            width: 64px; height: 64px; border-radius: 50%; margin: 0 auto 16px;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.6rem; color: var(--accent);
            background: rgba(233,69,96,0.1); border: 2px solid rgba(233,69,96,0.2);
            transition: var(--transition);
        }
        .category-card:hover .icon-wrap { background: rgba(233,69,96,0.2); border-color: var(--accent); transform: scale(1.05); }
        .category-card h3 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 6px; }
        .category-card p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

        /* ===== 精选攻略卡片 ===== */
        .guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .guide-card {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius); overflow: hidden;
            transition: var(--transition); cursor: default;
        }
        .guide-card:hover { border-color: var(--border-glow); transform: translateY(-6px); box-shadow: var(--shadow-card); }
        .guide-card .card-img {
            height: 180px; background-size: cover; background-position: center;
            position: relative;
        }
        .guide-card .card-img .overlay {
            position: absolute; bottom: 0; left: 0; right: 0;
            background: linear-gradient(transparent, rgba(15,15,26,0.9));
            padding: 20px 18px 14px;
        }
        .guide-card .card-img .overlay .tag {
            display: inline-block; background: var(--accent); color: #fff;
            font-size: 0.65rem; font-weight: 700; padding: 2px 12px; border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .guide-card .card-body { padding: 20px 18px 22px; }
        .guide-card .card-body h3 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 6px; }
        .guide-card .card-body p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 12px; }
        .guide-card .card-meta {
            display: flex; align-items: center; justify-content: space-between;
            font-size: 0.75rem; color: var(--text-muted); border-top: 1px solid var(--border-color);
            padding-top: 12px; margin-top: 2px;
        }
        .guide-card .card-meta i { margin-right: 4px; }

        /* ===== 数据统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius); padding: 32px 20px; text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover { border-color: var(--border-glow); transform: translateY(-4px); box-shadow: var(--shadow-card); }
        .stat-card .num { font-size: 2.4rem; font-weight: 900; color: #fff; line-height: 1.2; }
        .stat-card .num .accent { color: var(--accent); }
        .stat-card .label { font-size: 0.85rem; color: var(--text-muted); margin-top: 6px; }
        .stat-card .icon { font-size: 1.8rem; color: var(--accent); margin-bottom: 8px; opacity: 0.6; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card); border: 1px solid var(--border-color);
            border-radius: var(--radius-sm); padding: 20px 24px; margin-bottom: 12px;
            transition: var(--transition); cursor: pointer;
        }
        .faq-item:hover { border-color: var(--border-glow); }
        .faq-item .question {
            display: flex; align-items: center; justify-content: space-between;
            font-weight: 600; font-size: 1rem; color: #fff; gap: 16px;
        }
        .faq-item .question i { color: var(--accent); font-size: 0.9rem; transition: var(--transition); }
        .faq-item.open .question i { transform: rotate(180deg); }
        .faq-item .answer {
            max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7;
        }
        .faq-item.open .answer { max-height: 300px; padding-top: 12px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border: 1px solid var(--border-glow); border-radius: var(--radius-lg);
            padding: 56px 40px; text-align: center; position: relative; overflow: hidden;
            box-shadow: var(--shadow-glow);
        }
        .cta-section::before {
            content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
            background: radial-gradient(circle at 50% 50%, rgba(233,69,96,0.06), transparent 60%);
            animation: pulseGlow 6s ease-in-out infinite;
        }
        @keyframes pulseGlow { 0%, 100% { opacity: 0.4; } 50% { opacity: 1; } }
        .cta-section h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 12px; position: relative; z-index: 1; }
        .cta-section p { color: var(--text-secondary); max-width: 500px; margin: 0 auto 24px; position: relative; z-index: 1; }
        .cta-section .btn-group { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; position: relative; z-index: 1; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px;
            border-radius: 30px; font-size: 0.9rem; font-weight: 600; border: none;
            cursor: pointer; transition: var(--transition);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #ff6b81); color: #fff;
            box-shadow: 0 4px 24px var(--accent-glow);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 36px var(--accent-glow); }
        .btn-outline {
            background: transparent; border: 2px solid rgba(255,255,255,0.2); color: #fff;
        }
        .btn-outline:hover { border-color: var(--accent); background: rgba(233,69,96,0.1); transform: translateY(-3px); }
        .btn-sm { padding: 8px 20px; font-size: 0.8rem; }

        /* ===== 页脚 ===== */
        .footer {
            background: rgba(10,10,18,0.98); border-top: 1px solid var(--border-color);
            padding: 56px 0 30px; margin-top: 60px;
        }
        .footer .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px;
            padding-bottom: 32px; border-bottom: 1px solid var(--border-color);
            margin-bottom: 24px;
        }
        .footer .footer-brand .nav-logo { font-size: 1.2rem; margin-bottom: 12px; }
        .footer .footer-brand p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.8; max-width: 360px; }
        .footer h4 { font-size: 0.95rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .footer ul li { margin-bottom: 10px; }
        .footer ul li a { font-size: 0.85rem; color: var(--text-muted); transition: var(--transition); }
        .footer ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer .footer-bottom {
            display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
            gap: 12px; font-size: 0.8rem; color: var(--text-muted);
        }
        .footer .footer-bottom a { color: var(--text-secondary); }
        .footer .footer-bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .guide-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .hero-category h1 { font-size: 2.6rem; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none !important; }
            .mobile-menu-btn { display: block; }
            .mobile-nav.open { display: flex; }
            .hero-category { min-height: 340px; padding: 100px 0 60px; }
            .hero-category h1 { font-size: 2rem; }
            .hero-category .subtitle { font-size: 1rem; }
            .hero-category .stats-row { gap: 20px; }
            .hero-category .stat-num { font-size: 1.4rem; }
            .section { padding: 56px 0; }
            .section-heading h2 { font-size: 1.6rem; }
            .category-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .category-card { padding: 24px 16px; }
            .guide-grid { grid-template-columns: 1fr; gap: 18px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .stat-card { padding: 24px 16px; }
            .stat-card .num { font-size: 1.8rem; }
            .footer .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section { padding: 40px 24px; }
            .cta-section h2 { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-category h1 { font-size: 1.6rem; }
            .hero-category .subtitle { font-size: 0.9rem; }
            .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .section-heading h2 { font-size: 1.35rem; }
            .btn { padding: 10px 22px; font-size: 0.82rem; }
            .nav-logo { font-size: 1.1rem; }
            .nav-logo .tag { font-size: 0.55rem; padding: 1px 8px; }
            .faq-item { padding: 16px 18px; }
            .faq-item .question { font-size: 0.9rem; }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 10px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--accent); }

        /* ===== 选中高亮 ===== */
        ::selection { background: var(--accent); color: #fff; }

        /* ===== 动画 ===== */
        @keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
        .animate-fade-up { animation: fadeUp 0.8s ease forwards; }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        .delay-4 { animation-delay: 0.4s; }

/* roulang page: article */
:root {
            --primary: #3b82f6;
            --primary-dark: #1d4ed8;
            --accent: #d946ef;
            --accent-dark: #a21caf;
            --bg-dark: #0f172a;
            --bg-card: #1e293b;
            --bg-elevated: #334155;
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-subtle: #334155;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 16px 48px rgba(59, 130, 246, 0.15);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Navigation ===== */
        .main-nav {
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(51, 65, 85, 0.6);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: background 0.3s ease;
        }
        .main-nav.scrolled {
            background: rgba(15, 23, 42, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.5px;
        }
        .nav-logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .nav-logo .tag {
            background: linear-gradient(135deg, var(--accent), #a78bfa);
            color: #fff;
            font-size: 0.65rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 30px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .nav-link {
            color: var(--text-muted);
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 30px;
            transition: all 0.25s ease;
            font-size: 0.95rem;
            position: relative;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(59, 130, 246, 0.12);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(217, 70, 239, 0.12));
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.08);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--accent), #a78bfa);
            color: #fff;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 30px;
            font-size: 0.9rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(217, 70, 239, 0.25);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(217, 70, 239, 0.4);
        }
        .mobile-menu-btn {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.6rem;
            padding: 6px 12px;
            cursor: pointer;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            padding: 12px 24px 20px;
            gap: 6px;
            border-top: 1px solid rgba(51, 65, 85, 0.4);
            background: rgba(15, 23, 42, 0.98);
        }
        .mobile-nav a {
            color: var(--text-muted);
            font-weight: 500;
            padding: 12px 16px;
            border-radius: 12px;
            transition: all 0.2s;
            font-size: 1rem;
        }
        .mobile-nav a:hover {
            background: rgba(59, 130, 246, 0.1);
            color: #fff;
        }
        .mobile-nav a.active {
            color: #fff;
            background: rgba(59, 130, 246, 0.15);
        }
        .mobile-nav a.text-accent-600 {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-menu-btn {
                display: block;
            }
            .mobile-nav.open {
                display: flex;
            }
            .nav-logo {
                font-size: 1.25rem;
            }
        }
        @media (min-width: 769px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-nav {
                display: none !important;
            }
        }

        /* ===== Hero Banner ===== */
        .article-hero {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.85), rgba(30, 41, 59, 0.75)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-bottom: 1px solid rgba(51, 65, 85, 0.4);
            padding: 80px 24px 60px;
        }
        .article-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(217, 70, 239, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .article-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .article-hero .hero-category {
            display: inline-block;
            background: rgba(217, 70, 239, 0.18);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(217, 70, 239, 0.2);
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-hero .hero-meta {
            color: var(--text-muted);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .article-hero .hero-meta i {
            margin-right: 6px;
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .article-hero {
                min-height: 260px;
                padding: 60px 16px 40px;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-hero .hero-meta {
                font-size: 0.85rem;
                gap: 12px;
            }
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            border: 1px solid rgba(51, 65, 85, 0.4);
            box-shadow: var(--shadow-card);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-main);
        }
        .article-body .content p {
            margin-bottom: 1.4em;
        }
        .article-body .content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-top: 2em;
            margin-bottom: 0.8em;
            color: #fff;
            border-left: 4px solid var(--accent);
            padding-left: 18px;
        }
        .article-body .content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            color: #e2e8f0;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-body .content li {
            margin-bottom: 0.4em;
        }
        .article-body .content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body .content a:hover {
            color: var(--accent);
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 2em 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(217, 70, 239, 0.06);
            padding: 16px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 1.6em 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body .content pre {
            background: rgba(0, 0, 0, 0.3);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            overflow-x: auto;
            font-size: 0.9rem;
            border: 1px solid rgba(51, 65, 85, 0.4);
            margin: 1.6em 0;
        }
        .article-body .content code {
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.9em;
            background: rgba(59, 130, 246, 0.1);
            padding: 2px 8px;
            border-radius: 4px;
            color: var(--primary);
        }
        .article-body .content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-body .content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .article-body .content th,
        .article-body .content td {
            padding: 12px 18px;
            border: 1px solid rgba(51, 65, 85, 0.4);
            text-align: left;
        }
        .article-body .content th {
            background: rgba(59, 130, 246, 0.1);
            font-weight: 600;
            color: #fff;
        }
        .article-body .content td {
            background: rgba(0, 0, 0, 0.15);
        }
        .article-body .content .tag {
            display: inline-block;
            background: rgba(217, 70, 239, 0.12);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 2px 12px;
            border-radius: 20px;
            margin-right: 6px;
        }
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            color: var(--text-muted);
        }
        .article-not-found i {
            font-size: 3rem;
            color: var(--text-dim);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .article-not-found p {
            font-size: 1.05rem;
            margin-bottom: 24px;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), #6366f1);
            color: #fff;
            font-weight: 600;
            padding: 12px 32px;
            border-radius: 30px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(59, 130, 246, 0.25);
        }
        .article-not-found .btn-back:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid rgba(51, 65, 85, 0.4);
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i {
            color: var(--accent);
        }
        .sidebar-card .divider {
            height: 1px;
            background: rgba(51, 65, 85, 0.5);
            margin: 16px 0;
        }
        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            color: var(--text-muted);
            transition: all 0.2s;
            border-bottom: 1px solid rgba(51, 65, 85, 0.2);
            font-size: 0.95rem;
        }
        .sidebar-link:last-child {
            border-bottom: none;
        }
        .sidebar-link:hover {
            color: #fff;
            padding-left: 6px;
        }
        .sidebar-link i {
            color: var(--primary);
            font-size: 0.8rem;
        }
        .sidebar-cta {
            display: block;
            text-align: center;
            background: linear-gradient(135deg, var(--accent), #a78bfa);
            color: #fff;
            font-weight: 600;
            padding: 14px 0;
            border-radius: 30px;
            margin-top: 12px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(217, 70, 239, 0.2);
        }
        .sidebar-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(217, 70, 239, 0.35);
        }
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .article-body {
                padding: 24px 18px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Tags ===== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(51, 65, 85, 0.4);
        }
        .article-tags .tag-item {
            background: rgba(59, 130, 246, 0.08);
            color: var(--text-muted);
            font-size: 0.8rem;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 30px;
            border: 1px solid rgba(51, 65, 85, 0.3);
            transition: all 0.2s;
        }
        .article-tags .tag-item:hover {
            background: rgba(59, 130, 246, 0.15);
            color: #fff;
            border-color: var(--primary);
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0;
            border-top: 1px solid rgba(51, 65, 85, 0.3);
            background: rgba(15, 23, 42, 0.5);
        }
        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 32px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid rgba(51, 65, 85, 0.3);
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(59, 130, 246, 0.3);
            box-shadow: var(--shadow-hover);
        }
        .related-card .cat-tag {
            display: inline-block;
            background: rgba(217, 70, 239, 0.12);
            color: var(--accent);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .related-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .related-card .meta {
            font-size: 0.8rem;
            color: var(--text-dim);
            margin-top: 12px;
        }
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-title {
                font-size: 1.4rem;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: rgba(15, 23, 42, 0.95);
            border-top: 1px solid rgba(51, 65, 85, 0.3);
            padding: 60px 0 30px;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .nav-logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.95rem;
            max-width: 360px;
        }
        .footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer ul {
            list-style: none;
            padding: 0;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(51, 65, 85, 0.3);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--surface-lighter);
            border-radius: 6px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-dim);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-dim);
            padding: 20px 0 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: var(--text-dim);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--accent);
            font-weight: 500;
        }