/* roulang page: index */
:root {
            --brand: #0d1b3e;
            --brand-light: #1e3a8a;
            --accent: #f5a623;
            --accent-dark: #de8a00;
            --text-main: #0f172a;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 12px 32px rgba(2, 12, 27, 0.1);
        }

        * { box-sizing: border-box; }

        html { scroll-behavior: smooth; }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            color: var(--text-main);
            background: #fff;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        a { text-decoration: none; color: inherit; }

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

        .container { max-width: 1200px; margin: 0 auto; }

        .hero-section {
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .hero-overlay {
            background: linear-gradient(100deg, rgba(7, 15, 36, 0.95) 0%, rgba(13, 27, 62, 0.82) 50%, rgba(13, 27, 62, 0.45) 100%);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(8px);
            padding: 8px 18px;
            border-radius: 999px;
            color: #fff;
            font-size: 14px;
            letter-spacing: 1px;
        }

        .hero-badge::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(245, 166, 35, 0.8);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 34px;
            border-radius: 999px;
            background: var(--accent);
            color: #0d1b3e;
            font-weight: 700;
            font-size: 16px;
            transition: all 0.3s ease;
            box-shadow: 0 8px 24px rgba(245, 166, 35, 0.35);
        }

        .btn-primary:hover {
            background: #ffb93f;
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(245, 166, 35, 0.45);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 34px;
            border-radius: 999px;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .section-tag {
            display: inline-block;
            background: rgba(13, 27, 62, 0.06);
            color: var(--brand);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            padding: 6px 16px;
            border-radius: 999px;
        }

        .section-title { font-size: 34px; font-weight: 800; color: var(--text-main); line-height: 1.25; }

        .section-desc { color: var(--text-muted); font-size: 16px; max-width: 640px; }

        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: all 0.35s ease;
            box-shadow: 0 4px 14px rgba(2, 12, 27, 0.04);
        }

        .feature-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
            border-color: rgba(245, 166, 35, 0.4);
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            background: linear-gradient(135deg, #0d1b3e, #1e3a8a);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 26px;
            margin-bottom: 20px;
        }

        .category-card {
            display: block;
            background: #fff;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: 0 6px 20px rgba(2, 12, 27, 0.05);
            transition: all 0.35s ease;
        }

        .category-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
        }

        .category-card img { height: 220px; width: 100%; object-fit: cover; transition: transform 0.5s ease; }

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

        .category-card .card-body { padding: 28px; }

        .category-card .card-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: var(--brand);
            transition: all 0.3s ease;
        }

        .category-card:hover .card-cta { color: var(--accent-dark); gap: 14px; }

        .news-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: 0 6px 20px rgba(2, 12, 27, 0.05);
            transition: all 0.35s ease;
            height: 100%;
        }

        .news-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
            border-color: rgba(13, 27, 62, 0.2);
        }

        .news-card img { height: 170px; width: 100%; object-fit: cover; transition: transform 0.5s ease; }

        .news-card:hover img { transform: scale(1.04); }

        .stats-section {
            background: linear-gradient(135deg, #0d1b3e 0%, #142a5e 60%, #1e3a8a 100%);
            position: relative;
        }

        .stat-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .process-card {
            text-align: center;
            padding: 36px 24px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all 0.35s ease;
            position: relative;
        }

        .process-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-6px);
        }

        .process-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--brand);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 18px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 0;
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }

        .faq-item:hover { box-shadow: 0 8px 24px rgba(2, 12, 27, 0.08); }

        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            padding: 22px 26px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-main);
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker { display: none; }

        .faq-item summary::after {
            content: '+';
            font-size: 28px;
            font-weight: 300;
            color: var(--brand-light);
            transition: transform 0.3s ease;
            line-height: 1;
        }

        .faq-item[open] summary::after { content: '−'; transform: rotate(180deg); }

        .faq-item .faq-body { padding: 0 26px 24px; color: var(--text-muted); font-size: 15px; line-height: 1.7; }

        .cta-section {
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .cta-overlay {
            background: linear-gradient(120deg, rgba(13, 27, 62, 0.93), rgba(13, 27, 62, 0.7));
        }

        .footer { background: #070f24; }

        .footer-link { color: rgba(255, 255, 255, 0.6); transition: all 0.3s ease; }

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

        @media (max-width: 768px) {
            .section-title { font-size: 28px; }
            .stat-num { font-size: 32px; }
        }

        @media (max-width: 520px) {
            .section-title { font-size: 24px; }
            .hero-badge { font-size: 12px; padding: 6px 12px; }
            .btn-primary, .btn-outline-light { padding: 12px 24px; font-size: 14px; width: 100%; }
        }

/* roulang page: category1 */
:root {
            --brand: #0f0e2b;
            --brand-light: #1a1940;
            --brand-dark: #0a0919;
            --accent: #f5b03b;
            --accent-light: #f7c46a;
            --accent-dark: #e19a1a;
            --text-body: #334155;
            --text-weak: #64748b;
            --border-color: rgba(255, 255, 255, 0.12);
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --shadow-card: 0 10px 40px -10px rgba(15, 14, 43, 0.12);
            --shadow-hover: 0 20px 50px -12px rgba(15, 14, 43, 0.22);
        }
        * {
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: #f8f9fc;
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            transition: all .3s ease;
        }
        .nav-item.active {
            background: rgba(245, 176, 59, 0.18);
            color: #f5b03b !important;
            box-shadow: 0 0 0 1px rgba(245, 176, 59, 0.3);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            background: linear-gradient(135deg, #f5b03b, #ef9926);
            color: #0f0e2b;
            font-weight: 700;
            padding: .875rem 1.75rem;
            border-radius: 9999px;
            box-shadow: 0 10px 30px -8px rgba(245, 176, 59, 0.5);
            transition: all .3s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px -8px rgba(245, 176, 59, 0.6);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(245, 176, 59, 0.5);
            outline-offset: 2px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: .875rem 1.75rem;
            border-radius: 9999px;
            font-weight: 600;
            transition: all .3s ease;
            background: transparent;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }
        .footer-link {
            color: #94a3b8;
            transition: color .3s;
            position: relative;
        }
        .footer-link:hover {
            color: #f5b03b;
        }
        .card-hover {
            transition: transform .35s ease, box-shadow .35s ease;
        }
        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .badge-accent {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            background: rgba(245, 176, 59, 0.12);
            color: #b57b10;
            font-size: .75rem;
            font-weight: 600;
            padding: .3rem .8rem;
            border-radius: 9999px;
            border: 1px solid rgba(245, 176, 59, 0.25);
        }
        .badge-dark {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            background: rgba(15, 14, 43, 0.06);
            color: #0f0e2b;
            font-size: .75rem;
            font-weight: 600;
            padding: .3rem .8rem;
            border-radius: 9999px;
            border: 1px solid rgba(15, 14, 43, 0.08);
        }
        .step-card {
            position: relative;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-card);
            transition: transform .35s ease, box-shadow .35s ease;
            border: 1px solid rgba(15, 14, 43, 0.04);
        }
        .step-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }
        .step-number {
            position: absolute;
            top: 1.25rem;
            right: 1.5rem;
            font-size: 3rem;
            font-weight: 800;
            color: rgba(15, 14, 43, 0.06);
            line-height: 1;
        }
        .faq-item {
            background: #fff;
            border-radius: 1rem;
            border: 1px solid rgba(15, 14, 43, 0.05);
            transition: border-color .3s, box-shadow .3s;
        }
        .faq-item:hover {
            border-color: rgba(245, 176, 59, 0.3);
            box-shadow: 0 8px 24px -12px rgba(245, 176, 59, 0.25);
        }
        .page-hero {
            background-image: linear-gradient(135deg, rgba(15, 14, 43, 0.92), rgba(26, 25, 64, 0.85)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }
        .divider-gradient {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(245, 176, 59, 0.5), transparent);
        }
        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 3.5rem;
            height: 3.5rem;
            border-radius: 1rem;
            background: linear-gradient(135deg, rgba(245, 176, 59, 0.12), rgba(245, 176, 59, 0.06));
            color: #d18b12;
            font-size: 1.25rem;
            border: 1px solid rgba(245, 176, 59, 0.2);
        }
        @media (max-width: 1024px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }
        @media (max-width: 768px) {
            .step-card {
                padding: 1.5rem 1.25rem;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.75rem !important;
            }
            .btn-primary,
            .btn-ghost {
                width: 100%;
                justify-content: center;
            }
        }
        .focus-outline:focus-visible {
            outline: 3px solid rgba(245, 176, 59, 0.4);
            outline-offset: 2px;
        }

/* roulang page: category2 */
:root {
            --brand: #0b1220;
            --brand-light: #1e293b;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --text-primary: #f8fafc;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-light: rgba(255, 255, 255, 0.1);
            --radius-md: 0.75rem;
            --radius-lg: 1.25rem;
            --radius-xl: 1.75rem;
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.15);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.25);
            --gap-section: 5rem;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--brand);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all .3s ease;
        }

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

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

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        .section {
            padding: var(--gap-section) 0;
        }

        .section-header {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            margin-bottom: 3rem;
            align-items: flex-start;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            border: 1px solid rgba(245, 158, 11, 0.25);
            letter-spacing: 0.05em;
        }

        .section-title {
            font-size: clamp(1.75rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 640px;
            line-height: 1.8;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            color: #0b1220;
            font-weight: 700;
            font-size: 1rem;
            padding: 0.9rem 2rem;
            border-radius: 999px;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
            transition: all .3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(245, 158, 11, 0.5);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-weight: 600;
            padding: 0.85rem 2rem;
            border-radius: 999px;
            transition: all .3s ease;
            background: rgba(255, 255, 255, 0.05);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.45);
            transform: translateY(-2px);
        }

        .nav-item {
            position: relative;
        }

        .nav-item.active {
            background: rgba(245, 158, 11, 0.2);
            color: #f59e0b;
        }

        .card {
            background: linear-gradient(145deg, rgba(30, 41, 59, 0.7), rgba(15, 23, 42, 0.85));
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            transition: all .4s ease;
        }

        .card:hover {
            transform: translateY(-6px);
            border-color: rgba(245, 158, 11, 0.35);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .badge {
            display: inline-block;
            padding: 0.25rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(245, 158, 11, 0.15);
            color: #fbbf24;
            border: 1px solid rgba(245, 158, 11, 0.3);
        }

        .badge-info {
            background: rgba(56, 189, 248, 0.15);
            color: #38bdf8;
            border-color: rgba(56, 189, 248, 0.3);
        }

        .badge-success {
            background: rgba(52, 211, 153, 0.15);
            color: #34d399;
            border-color: rgba(52, 211, 153, 0.3);
        }

        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
            margin: 2rem 0;
        }

        .footer-link {
            color: #94a3b8;
            transition: all .3s ease;
        }

        .footer-link:hover {
            color: #f59e0b;
        }

        .faq-item {
            background: rgba(30, 41, 59, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.75rem;
            transition: all .3s ease;
        }

        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.3);
        }

        .faq-question {
            font-weight: 700;
            color: #fff;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }

        .faq-answer {
            color: #94a3b8;
            font-size: 0.95rem;
            margin-top: 0.75rem;
            line-height: 1.8;
        }

        .hero-bg {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
        }

        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.92) 20%, rgba(11, 18, 32, 0.72) 60%, rgba(11, 18, 32, 0.85) 100%);
            z-index: 1;
        }

        .hero-bg>* {
            position: relative;
            z-index: 2;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-up {
            animation: fadeInUp 0.8s ease forwards;
            opacity: 0;
        }

        .animate-delay-1 {
            animation-delay: 0.2s;
        }

        .animate-delay-2 {
            animation-delay: 0.4s;
        }

        .animate-delay-3 {
            animation-delay: 0.6s;
        }

        /* Feature card */
        .feature-card {
            background: rgba(30, 41, 59, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: all .4s ease;
        }

        .feature-card:hover {
            border-color: rgba(245, 158, 11, 0.3);
            background: rgba(30, 41, 59, 0.6);
            transform: translateY(-4px);
        }

        /* Stats block */
        .stat-item {
            text-align: center;
            padding: 2rem 1rem;
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #f59e0b;
            line-height: 1.2;
        }

        .stat-label {
            color: #94a3b8;
            font-size: 0.95rem;
            margin-top: 0.5rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            :root {
                --gap-section: 3.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .hero-bg {
                min-height: 500px;
            }
            .stat-number {
                font-size: 1.75rem;
            }
        }

        /* Hide scrollbar for nav */
        .nav-scroll::-webkit-scrollbar {
            display: none;
        }

/* roulang page: article */
:root {
            --brand: #0b1220;
            --brand-light: #1c2744;
            --accent: #f7a928;
            --accent-hover: #fdb94e;
            --accent-dark: #d18a13;
            --text-main: #1e293b;
            --text-weak: #64748b;
            --bg-body: #f6f7fb;
            --border-soft: #e2e8f0;
            --shadow-card: 0 10px 30px -10px rgba(2, 6, 23, 0.12);
            --shadow-hover: 0 25px 50px -12px rgba(2, 6, 23, 0.25);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            margin: 0;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            font-family: inherit;
        }

        /* 导航状态 */
        .nav-item.active {
            background: rgba(247, 169, 40, 0.22);
            color: var(--accent);
        }

        /* 按钮体系 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .55rem;
            padding: .95rem 2rem;
            border-radius: 9999px;
            background: var(--accent);
            color: var(--brand);
            font-weight: 800;
            font-size: .95rem;
            line-height: 1.5;
            text-decoration: none;
            transition: all .3s ease;
            box-shadow: 0 10px 24px -8px rgba(247, 169, 40, .55);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 14px 32px -8px rgba(247, 169, 40, .7);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(.97);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .55rem;
            padding: .95rem 2rem;
            border-radius: 9999px;
            background: transparent;
            color: #fff;
            font-weight: 700;
            font-size: .95rem;
            line-height: 1.5;
            text-decoration: none;
            transition: all .3s ease;
            border: 1.5px solid rgba(255, 255, 255, .35);
            cursor: pointer;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .6);
            transform: translateY(-2px);
        }
        .btn-ghost:active {
            transform: scale(.97);
        }

        /* Hero 背景 */
        .article-hero {
            background-image: linear-gradient(135deg, rgba(11, 18, 32, .94) 0%, rgba(11, 18, 32, .72) 55%, rgba(247, 169, 40, .22) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        /* 文章内容排版 */
        .article-content {
            font-size: 1.0625rem;
            line-height: 1.95;
            color: #334155;
            word-break: break-word;
        }
        .article-content p {
            margin-bottom: 1.6rem;
        }
        .article-content h2 {
            font-size: 1.55rem;
            font-weight: 800;
            color: var(--brand);
            margin: 2.4rem 0 1.2rem;
            padding-bottom: .7rem;
            border-bottom: 2px solid #f1f5f9;
            line-height: 1.35;
        }
        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--brand);
            margin: 2rem 0 1rem;
            line-height: 1.4;
        }
        .article-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--brand);
            margin: 1.6rem 0 .8rem;
        }
        .article-content ul {
            list-style: disc;
            padding-left: 1.5rem;
            margin: 0 0 1.6rem;
        }
        .article-content ol {
            list-style: decimal;
            padding-left: 1.5rem;
            margin: 0 0 1.6rem;
        }
        .article-content li {
            margin-bottom: .45rem;
        }
        .article-content a {
            color: var(--accent-dark);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color .2s;
        }
        .article-content a:hover {
            color: var(--accent);
        }
        .article-content img {
            border-radius: 1.25rem;
            margin: 2rem 0;
            box-shadow: var(--shadow-card);
            height: auto;
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(247, 169, 40, .08);
            padding: 1.1rem 1.4rem;
            border-radius: 0 1rem 1rem 0;
            margin: 1.8rem 0;
            color: #1e293b;
            font-weight: 500;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6rem 0;
            font-size: .95rem;
        }
        .article-content th,
        .article-content td {
            border: 1px solid #e2e8f0;
            padding: .75rem 1rem;
            text-align: left;
        }
        .article-content th {
            background: #f8fafc;
            font-weight: 700;
            color: var(--brand);
        }
        .article-content code {
            background: #f1f5f9;
            border-radius: .375rem;
            padding: .15rem .4rem;
            font-size: .9em;
        }

        /* 区块标题 */
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            padding: .4rem 1.1rem;
            border-radius: 9999px;
            background: rgba(247, 169, 40, .12);
            color: var(--accent-dark);
            font-size: .85rem;
            font-weight: 700;
            letter-spacing: .02em;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--brand);
            margin-top: .9rem;
            line-height: 1.25;
        }

        /* FAQ */
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: 1.25rem;
            padding: 1.35rem 1.5rem;
            transition: all .3s ease;
            box-shadow: 0 4px 14px -6px rgba(2, 6, 23, .06);
        }
        .faq-item:hover,
        .faq-item[open] {
            border-color: rgba(247, 169, 40, .45);
            box-shadow: 0 14px 28px -12px rgba(2, 6, 23, .15);
        }
        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 700;
            color: var(--brand);
            font-size: 1.05rem;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            flex-shrink: 0;
            width: 2rem;
            height: 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 9999px;
            background: rgba(247, 169, 40, .12);
            color: var(--accent-dark);
            font-weight: 700;
            font-size: 1.2rem;
            transition: transform .3s;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item p {
            margin-top: 1rem;
            color: #64748b;
            font-size: .95rem;
            line-height: 1.85;
        }

        /* 页脚链接 */
        .footer-link {
            color: rgba(148, 163, 184, .85);
            transition: color .3s;
        }
        .footer-link:hover {
            color: var(--accent);
        }

        /* 文本截断 */
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* 推荐卡片 hover */
        .reco-card {
            transition: transform .35s ease, box-shadow .35s ease;
        }
        .reco-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        ::selection {
            background: rgba(247, 169, 40, .3);
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.55rem;
            }
            .article-content {
                font-size: 1rem;
                line-height: 1.85;
            }
        }
        @media (max-width: 520px) {
            .article-hero {
                background-position: 60% center;
            }
            .btn-primary,
            .btn-ghost {
                padding: .85rem 1.6rem;
                font-size: .9rem;
            }
        }