/* roulang page: index */
:root {
            --primary: #0b1220;
            --primary-light: #1a2332;
            --accent: #f0b429;
            --accent-dark: #d69e2e;
            --bg: #f6f7f9;
            --bg-dark: #0b1220;
            --card: #ffffff;
            --text: #1a2332;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 4px 24px rgba(11, 18, 32, 0.06);
            --shadow-hover: 0 12px 32px rgba(11, 18, 32, 0.12);
            --spacing-section: 80px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container-x {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            transition: box-shadow .3s;
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(11, 18, 32, 0.08);
        }

        .header-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary);
        }

        .logo-badge {
            background: linear-gradient(135deg, #f0b429, #e8890c);
            color: #fff;
            font-size: .9rem;
            font-weight: 700;
            padding: 2px 10px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
            list-style: none;
        }

        .nav-links a {
            font-size: .95rem;
            font-weight: 500;
            color: var(--text);
            padding: 8px 4px;
            border-bottom: 2px solid transparent;
            transition: color .3s, border-color .3s;
        }

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

        .nav-links a.active {
            color: var(--accent-dark);
            border-color: var(--accent);
        }

        .nav-cta {
            background: linear-gradient(135deg, #f0b429, #e8890c);
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 10px 24px;
            font-size: .9rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform .3s, box-shadow .3s;
            box-shadow: 0 4px 14px rgba(240, 180, 41, 0.35);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 180, 41, 0.45);
        }

        .nav-cta:focus {
            outline: 3px solid rgba(240, 180, 41, 0.4);
            outline-offset: 2px;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            line-height: 1;
            padding: 4px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 640px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.png') center center/cover no-repeat;
            isolation: isolate;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 18, 32, 0.88) 0%, rgba(11, 18, 32, 0.55) 60%, rgba(11, 18, 32, 0.25) 100%);
            z-index: -1;
        }

        .hero-content {
            max-width: 680px;
            padding: 100px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 180, 41, 0.15);
            border: 1px solid rgba(240, 180, 41, 0.4);
            color: #f0b429;
            border-radius: 30px;
            padding: 6px 18px;
            font-size: .85rem;
            font-weight: 500;
            letter-spacing: .05em;
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: clamp(2.6rem, 6vw, 4.2rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }

        .hero-title .accent {
            background: linear-gradient(135deg, #f0b429, #ffd700);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-sub {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.15rem;
            line-height: 1.6;
            margin-bottom: 36px;
            max-width: 540px;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #f0b429, #e8890c);
            color: #fff;
            font-weight: 600;
            border: none;
            border-radius: 40px;
            padding: 14px 32px;
            font-size: 1rem;
            cursor: pointer;
            transition: transform .3s, box-shadow .3s;
            box-shadow: 0 6px 20px rgba(240, 180, 41, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(240, 180, 41, 0.5);
        }

        .btn-primary:focus {
            outline: 3px solid rgba(240, 180, 41, 0.4);
            outline-offset: 2px;
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            border-radius: 40px;
            padding: 13px 30px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: all .3s;
        }

        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        .btn-outline-light:focus {
            outline: 3px solid rgba(255, 255, 255, 0.3);
            outline-offset: 2px;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 50px;
            flex-wrap: wrap;
        }

        .hero-stat {
            color: #fff;
        }

        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: #f0b429;
            line-height: 1.2;
        }

        .hero-stat .label {
            font-size: .85rem;
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== 板块标题 ===== */
        .section-pad {
            padding: var(--spacing-section) 0;
        }

        .section-pad-sm {
            padding: 48px 0;
        }

        .section-title-wrap {
            margin-bottom: 48px;
            max-width: 720px;
        }

        .section-eyebrow {
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--accent-dark);
            margin-bottom: 12px;
            display: inline-block;
        }

        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            color: var(--text);
            line-height: 1.25;
            letter-spacing: -0.02em;
        }

        .section-desc {
            color: var(--text-weak);
            font-size: 1rem;
            margin-top: 12px;
            line-height: 1.7;
        }

        .text-center .section-title-wrap {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 卡片 ===== */
        .feature-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 38px 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: transform .3s, box-shadow .3s;
            height: 100%;
        }

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

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, #f0b429, #e8890c);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            margin-bottom: 20px;
            box-shadow: 0 6px 16px rgba(240, 180, 41, 0.3);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--text-weak);
            font-size: .95rem;
            line-height: 1.6;
        }

        /* ===== 分类卡 ===== */
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform .3s, box-shadow .3s;
            height: 100%;
            display: block;
        }

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

        .category-card img {
            width: 100%;
            height: 230px;
            object-fit: cover;
            transition: transform .5s;
        }

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

        .category-body {
            padding: 28px;
            background: var(--card);
        }

        .category-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .category-body p {
            color: var(--text-weak);
            font-size: .9rem;
            line-height: 1.55;
        }

        .category-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(11, 18, 32, 0.75);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: .78rem;
            font-weight: 500;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: .03em;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(240, 180, 41, 0.08), transparent 40%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 70px 0;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 18, 32, 0.85);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            color: #fff;
            padding: 30px 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(4px);
            transition: background .3s, transform .3s;
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.07);
            transform: translateY(-4px);
        }

        .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .stat-item .label {
            font-size: .9rem;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 8px;
        }

        /* ===== 资讯 ===== */
        .news-card {
            display: flex;
            flex-direction: column;
            background: var(--card);
            border-radius: var(--radius-md);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: transform .3s, box-shadow .3s;
            height: 100%;
        }

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

        .news-cat {
            display: inline-block;
            background: rgba(240, 180, 41, 0.12);
            color: var(--accent-dark);
            font-size: .78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            align-self: flex-start;
            margin-bottom: 14px;
        }

        .news-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card p {
            color: var(--text-weak);
            font-size: .88rem;
            line-height: 1.55;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
            font-size: .8rem;
            color: var(--text-weak);
        }

        .empty-tip {
            grid-column: 1/-1;
            text-align: center;
            padding: 60px 20px;
            background: var(--card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
            color: var(--text-weak);
            font-size: 1rem;
        }

        /* ===== 流程 ===== */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            counter-reset: step;
        }

        .step-card {
            position: relative;
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 40px 28px 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: transform .3s, box-shadow .3s;
        }

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

        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -18px;
            left: 50%;
            transform: translateX(-50%);
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #f0b429, #e8890c);
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(240, 180, 41, 0.4);
        }

        .step-icon {
            font-size: 2rem;
            margin-bottom: 16px;
            display: block;
        }

        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-card p {
            color: var(--text-weak);
            font-size: .88rem;
            line-height: 1.55;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow .3s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-item summary {
            cursor: pointer;
            padding: 22px 28px;
            font-weight: 600;
            font-size: 1.05rem;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: background .3s;
        }

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

        .faq-item summary::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--accent-dark);
            transition: transform .3s;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            content: '−';
        }

        .faq-answer {
            padding: 0 28px 24px;
            color: var(--text-weak);
            line-height: 1.7;
            font-size: .95rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-3.png') center center/cover no-repeat;
            position: relative;
            padding: 80px 0;
            isolation: isolate;
            border-radius: 28px;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.9), rgba(11, 18, 32, 0.75));
            z-index: -1;
        }

        .cta-inner {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            color: #fff;
        }

        .cta-inner h2 {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            font-size: 1.05rem;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: .9rem;
            line-height: 1.6;
            max-width: 360px;
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: .9rem;
            transition: color .3s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 28px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            font-size: .82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color .3s;
        }

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

        .risk-tip {
            font-size: .82rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.6;
            margin-top: 8px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 0 16px;
            }
            .header-wrap {
                height: 64px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                background: #fff;
                border-top: 1px solid #eee;
                border-bottom: 1px solid #eee;
                padding: 16px 24px;
                gap: 4px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                display: block;
                padding: 12px 0;
                border-bottom: 1px solid #f6f7f9;
                width: 100%;
            }
            .nav-cta {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .hero {
                min-height: auto;
                padding: 80px 0;
            }
            .hero-content {
                padding: 30px 0;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .btn-primary,
            .btn-outline-light {
                width: 100%;
                text-align: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .section-pad {
                padding: 50px 0;
            }
            .section-title-wrap {
                margin-bottom: 30px;
            }
        }

        @media (max-width: 520px) {
            .container-x {
                padding: 0 18px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .stat-item {
                padding: 24px 16px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .cta-buttons .btn-primary,
            .cta-buttons .btn-outline-light {
                width: 100%;
                text-align: center;
            }
        }

        /* 工具类 */
        .text-accent {
            color: var(--accent-dark);
        }

        .bg-light {
            background: #ffffff;
        }

        .bg-neutral {
            background: #f0f2f5;
        }

        .badge-pill {
            display: inline-block;
            background: rgba(240, 180, 41, 0.12);
            color: var(--accent-dark);
            border-radius: 30px;
            padding: 4px 14px;
            font-size: .78rem;
            font-weight: 600;
        }

        /* 动画 */
        @keyframes float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }

        .animate-float {
            animation: float 3s ease-in-out infinite;
        }

/* roulang page: category1 */
:root {
            --primary: #0f2a4a;
            --primary-light: #1b4068;
            --primary-dark: #081e35;
            --accent: #e8a33d;
            --accent-hover: #f0b454;
            --accent-soft: #fdf3e0;
            --bg: #f5f7fb;
            --bg-white: #ffffff;
            --text: #0f172a;
            --text-muted: #5b6b7f;
            --border: #e4e9f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 12px 32px rgba(15, 42, 74, 0.08);
            --shadow-lg: 0 20px 48px rgba(15, 42, 74, 0.12);
            --transition: all 0.3s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        .container-x {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .header-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
        }

        .logo-badge {
            display: inline-block;
            background: var(--accent-soft);
            color: #b8771f;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 999px;
            border: 1px solid #f0d5a8;
            letter-spacing: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: inline-block;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .nav-links li a:hover {
            color: var(--primary);
            background: #f0f3f8;
        }

        .nav-links li a.active {
            color: var(--primary);
            background: var(--accent-soft);
            font-weight: 700;
        }

        .nav-cta {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-dark) !important;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 999px;
            border: none;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(232, 163, 61, 0.3);
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(232, 163, 61, 0.4);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            font-size: 22px;
            color: var(--primary);
            width: 44px;
            height: 44px;
            border-radius: 10px;
            cursor: pointer;
            transition: var(--transition);
        }

        .menu-toggle:hover {
            background: #f0f3f8;
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .nav-links {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
                display: none;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links li a {
                display: block;
                padding: 12px 16px;
                border-radius: 10px;
            }

            .nav-links li {
                margin: 0 !important;
            }
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            background-image: linear-gradient(135deg, rgba(8, 30, 53, 0.92), rgba(15, 42, 74, 0.82)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 100px 0 90px;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -60px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(232, 163, 61, 0.3), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }

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

        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 22px;
            backdrop-filter: blur(6px);
        }

        .hero-inner h1 {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.15;
            margin: 0 0 18px;
            letter-spacing: 1px;
        }

        .hero-inner p.lead {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            padding: 14px 30px;
            border-radius: 999px;
            border: none;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(232, 163, 61, 0.35);
        }

        .btn-gold:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(232, 163, 61, 0.45);
        }

        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 14px 26px;
            border-radius: 999px;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }

        .btn-ghost-light:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(255, 255, 255, 0.06);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 64px 0 56px;
            }

            .hero-inner h1 {
                font-size: 34px;
            }

            .hero-inner p.lead {
                font-size: 16px;
            }

            .hero-actions .btn-gold,
            .hero-actions .btn-ghost-light {
                width: 100%;
                justify-content: center;
            }
        }

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

        .section-alt {
            background: var(--bg-white);
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }

        .section-head .kicker {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: #b8771f;
            background: var(--accent-soft);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            margin: 0 0 12px;
            letter-spacing: -0.5px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .section-head h2 {
                font-size: 26px;
            }
        }

        /* ===== Intro / 核心说明 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-media {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .intro-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .intro-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 42, 74, 0.25), transparent 50%);
            border-radius: var(--radius);
        }

        .intro-content h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.4;
            margin: 0 0 18px;
        }

        .intro-content p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.9;
            margin-bottom: 20px;
        }

        .feature-points {
            list-style: none;
            margin: 24px 0 0;
            padding: 0;
        }

        .feature-points li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 18px;
        }

        .feature-points li .icon {
            flex: 0 0 40px;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent-soft);
            color: #b8771f;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .feature-points li strong {
            display: block;
            font-size: 16px;
            color: var(--primary);
            margin-bottom: 2px;
        }

        .feature-points li span {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        @media (max-width: 900px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .intro-media img {
                height: 280px;
            }
        }

        /* ===== Topic cards 主题卡 ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .topic-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: #d8c6a8;
        }

        .topic-card .card-media {
            position: relative;
            height: 170px;
            overflow: hidden;
        }

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

        .topic-card:hover .card-media img {
            transform: scale(1.05);
        }

        .topic-card .card-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 60%, rgba(15, 42, 74, 0.35));
        }

        .topic-card .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
        }

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

        .topic-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 10px;
        }

        .topic-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .box-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            transition: var(--transition);
        }

        .topic-card:hover .box-link {
            gap: 10px;
            color: #b8771f;
        }

        @media (max-width: 1024px) and (min-width: 769px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }

            .topic-card .card-media {
                height: 200px;
            }
        }

        /* ===== 热门指南列表 ===== */
        .guide-list {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .guide-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 22px 26px;
            border-bottom: 1px solid var(--border);
            transition: background 0.25s ease;
        }

        .guide-list-item:last-child {
            border-bottom: none;
        }

        .guide-list-item:hover {
            background: #fafbfd;
        }

        .guide-num {
            flex: 0 0 48px;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
            background: var(--accent-soft);
            border-radius: 12px;
        }

        .guide-info {
            flex: 1;
        }

        .guide-info h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 6px;
            line-height: 1.5;
            transition: color 0.2s ease;
        }

        .guide-list-item:hover .guide-info h3 {
            color: #b8771f;
        }

        .guide-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .guide-meta .label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
            background: #f0f3f8;
            color: var(--primary);
        }

        .guide-meta .label.gold {
            background: var(--accent-soft);
            color: #b8771f;
        }

        .guide-arrow {
            flex: 0 0 auto;
            color: #c3ccd8;
            font-size: 18px;
            transition: var(--transition);
        }

        .guide-list-item:hover .guide-arrow {
            color: var(--accent);
            transform: translateX(4px);
        }

        @media (max-width: 768px) {
            .guide-list-item {
                padding: 18px;
                gap: 14px;
                flex-wrap: wrap;
            }

            .guide-num {
                flex-basis: 40px;
                width: 40px;
                height: 40px;
                font-size: 15px;
            }

            .guide-info h3 {
                font-size: 15px;
            }

            .guide-meta {
                flex-wrap: wrap;
                gap: 8px 12px;
            }
        }

        /* ===== 学习路径时间线 ===== */
        .roadmap-section {
            background-image: linear-gradient(135deg, rgba(8, 30, 53, 0.93), rgba(15, 42, 74, 0.88)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
        }

        .roadmap-section .section-head h2 {
            color: #fff;
        }

        .roadmap-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        .roadmap-section .section-head .kicker {
            background: rgba(232, 163, 61, 0.15);
            color: var(--accent);
            border: 1px solid rgba(232, 163, 61, 0.3);
        }

        .timeline {
            position: relative;
            max-width: 760px;
            margin: 0 auto;
            padding: 20px 0 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 28px;
            width: 2px;
            background: linear-gradient(to bottom, rgba(232, 163, 61, 0.5), rgba(255, 255, 255, 0.1));
        }

        .timeline-item {
            position: relative;
            padding: 0 0 36px 76px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: 16px;
            top: 4px;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--accent);
            border: 4px solid rgba(255, 255, 255, 0.15);
            box-shadow: 0 0 0 4px rgba(232, 163, 61, 0.25);
        }

        .timeline-item .step-label {
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 4px;
        }

        .timeline-item h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .timeline-item p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin: 0;
        }

        @media (max-width: 768px) {
            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                padding-left: 56px;
            }

            .timeline-dot {
                left: 9px;
            }
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background-image: linear-gradient(135deg, rgba(15, 42, 74, 0.95), rgba(20, 52, 88, 0.9)), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            padding: 70px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-item .stat-num {
            font-size: 44px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-item .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }

        @media (max-width: 900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 20px;
            }
        }

        @media (max-width: 520px) {
            .stat-item .stat-num {
                font-size: 34px;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(15, 42, 74, 0.04);
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: #d8c6a8;
            box-shadow: 0 8px 24px rgba(15, 42, 74, 0.07);
        }

        .faq-item summary {
            cursor: pointer;
            list-style: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
            user-select: none;
        }

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

        .faq-item summary .faq-icon {
            flex: 0 0 32px;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--accent-soft);
            color: #b8771f;
            border-radius: 50%;
            font-size: 14px;
            transition: transform 0.3s ease;
        }

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

        .faq-item .faq-body {
            padding: 0 24px 22px 72px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.85;
        }

        @media (max-width: 768px) {
            .faq-item .faq-body {
                padding-left: 24px;
            }

            .faq-item summary {
                padding: 18px;
                font-size: 15px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(120deg, var(--primary), var(--primary-light));
            border-radius: 24px;
            margin: 0 auto;
            overflow: hidden;
            text-align: center;
            color: #fff;
            width: 100%;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(232, 163, 61, 0.4), transparent 60%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            padding: 68px 40px;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 800;
            margin: 0 0 14px;
            letter-spacing: -0.5px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 30px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-inner {
                padding: 48px 24px;
            }

            .cta-inner h2 {
                font-size: 26px;
            }

            .cta-actions .btn-gold,
            .cta-actions .btn-ghost-light {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .logo span {
            color: #fff;
        }

        .footer-brand .logo-badge {
            background: rgba(232, 163, 61, 0.15);
            color: var(--accent);
            border-color: rgba(232, 163, 61, 0.3);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.85;
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.55);
            max-width: 380px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .risk-tip {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.35);
            line-height: 1.8;
            padding: 18px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin: 0;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }

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

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 600px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Focus states ===== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 0;
        }

        /* ===== 页面通用 ===== */
        .section-divider {
            border: none;
            margin: 0;
            height: 1px;
            background: var(--border);
        }

/* roulang page: article */
:root{
  --primary:#0f172a;
  --primary-2:#1e293b;
  --accent:#4f46e5;
  --accent-2:#6366f1;
  --gold:#f59e0b;
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#1e293b;
  --muted:#64748b;
  --border:#e2e8f0;
  --radius:18px;
  --radius-sm:12px;
  --shadow-sm:0 2px 10px rgba(15,23,42,.05);
  --shadow-md:0 10px 40px rgba(15,23,42,.08);
  --shadow-lg:0 24px 80px rgba(15,23,42,.12);
  --trans:.3s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
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);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;border:none;background:none;cursor:pointer}
input{font:inherit}
.container-x{max-width:1200px;margin:0 auto;padding:0 24px}
@media(max-width:768px){.container-x{padding:0 16px}}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(226,232,240,.8);
  box-shadow:0 1px 12px rgba(15,23,42,.04);
  transition:box-shadow var(--trans);
}
.site-header.scrolled{box-shadow:0 4px 24px rgba(15,23,42,.08)}
.header-wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:20px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-size:22px;font-weight:800;letter-spacing:.5px;
  color:var(--primary);line-height:1;
}
.logo-badge{
  display:inline-block;
  background:linear-gradient(135deg,#6366f1,#8b5cf6);
  color:#fff;font-size:11px;font-weight:700;
  padding:4px 10px;border-radius:100px;
  letter-spacing:.5px;
}
.nav-links{
  display:flex;align-items:center;gap:8px;list-style:none;
}
.nav-links a{
  display:inline-block;
  padding:9px 18px;
  border-radius:100px;
  font-size:15px;font-weight:500;
  color:var(--text);
  transition:var(--trans);
  position:relative;
}
.nav-links a:hover{background:#eef2ff;color:var(--accent)}
.nav-links a.active{background:var(--accent);color:#fff;box-shadow:0 4px 16px rgba(79,70,229,.3)}
.nav-cta{
  background:linear-gradient(135deg,#f59e0b,#f97316);
  color:#fff!important;
  font-size:14px;font-weight:700;
  padding:10px 22px!important;
  border-radius:100px;
  box-shadow:0 4px 18px rgba(245,158,11,.35);
  transition:var(--trans);
  display:inline-block;
}
.nav-cta:hover{
  transform:translateY(-2px) scale(1.03);
  box-shadow:0 8px 28px rgba(245,158,11,.45);
  background:linear-gradient(135deg,#d97706,#ea580c);
  color:#fff!important;
}
.menu-toggle{
  display:none;font-size:22px;color:var(--primary);
  width:44px;height:44px;border-radius:12px;
  background:var(--bg);align-items:center;justify-content:center;
  transition:var(--trans);
}
.menu-toggle:hover{background:#eef2ff;color:var(--accent)}
@media(max-width:768px){
  .menu-toggle{display:flex}
  .nav-links{
    position:fixed;top:72px;left:0;right:0;
    background:#fff;
    flex-direction:column;align-items:stretch;
    padding:16px 20px 20px;
    border-bottom:1px solid var(--border);
    box-shadow:0 16px 40px rgba(15,23,42,.1);
    transform:translateY(-110%);
    transition:transform .35s cubic-bezier(.4,0,.2,1);
    border-radius:0 0 20px 20px;
    z-index:99;
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links a,.nav-links button{text-align:center;width:100%}
  .nav-links li{width:100%}
  .nav-links a{padding:13px}
  .nav-cta{margin-top:6px}
}

/* ===== Banner ===== */
.article-banner{
  position:relative;
  background-size:cover;background-position:center;
  padding:88px 0 72px;
  overflow:hidden;
}
.article-banner::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,14,30,.92),rgba(30,27,75,.75)),radial-gradient(circle at 80% 20%,rgba(99,102,241,.25),transparent 50%);
}
.article-banner .container-x{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:rgba(255,255,255,.7);margin-bottom:24px;
}
.breadcrumb a{color:rgba(255,255,255,.85);transition:var(--trans)}
.breadcrumb a:hover{color:#c7d2fe}
.breadcrumb .sep{opacity:.4}
.breadcrumb .current{color:#c7d2fe}
.banner-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.25);
  color:#e0e7ff;font-size:13px;font-weight:600;
  padding:6px 16px;border-radius:100px;
  letter-spacing:.5px;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.banner-title{
  font-size:36px;line-height:1.3;font-weight:800;
  color:#fff;margin-top:20px;max-width:780px;
  letter-spacing:.5px;
}
.banner-meta{
  display:flex;align-items:center;gap:20px;margin-top:24px;
  color:rgba(255,255,255,.7);font-size:14px;flex-wrap:wrap;
}
.banner-meta .meta-item{display:flex;align-items:center;gap:6px}
.banner-meta .meta-item svg{width:16px;height:16px;opacity:.7}
@media(max-width:768px){
  .article-banner{padding:64px 0 48px}
  .banner-title{font-size:26px}
}

/* ===== Article Layout ===== */
.article-section{position:relative;padding:56px 0 0}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:40px;
  align-items:start;
}
@media(max-width:1024px){.article-layout{grid-template-columns:1fr}}
.article-main{min-width:0}
.article-card{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow-md);
  padding:40px 44px;
  border:1px solid rgba(226,232,240,.6);
}
@media(max-width:768px){.article-card{padding:24px 20px}}
.article-content{
  font-size:16.5px;line-height:2;color:#334155;
}
.article-content p{margin-bottom:22px}
.article-content h2{
  font-size:23px;font-weight:700;color:var(--primary);
  margin:40px 0 16px;padding-left:16px;
  border-left:4px solid var(--accent);line-height:1.4;
}
.article-content h3{
  font-size:18px;font-weight:700;color:var(--text);margin:32px 0 12px;
}
.article-content img{border-radius:14px;margin:28px 0;box-shadow:var(--shadow-md)}
.article-content ul,.article-content ol{margin:20px 0;padding-left:24px}
.article-content ul li,.article-content ol li{margin-bottom:8px}
.article-content ul li::marker{color:var(--accent)}
.article-content blockquote{
  background:#f8fafc;border-left:4px solid var(--gold);
  padding:18px 24px;border-radius:0 14px 14px 0;
  margin:28px 0;color:var(--muted);font-style:italic;
}
.article-content a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--accent-2)}
.article-content table{width:100%;border-collapse:collapse;margin:28px 0;border-radius:12px;overflow:hidden}
.article-content th,.article-content td{padding:14px 16px;border:1px solid var(--border);text-align:left;font-size:14.5px}
.article-content th{background:#f1f5f9;font-weight:600;color:var(--primary)}
.article-content code{background:#f1f5f9;padding:2px 6px;border-radius:6px;font-size:14px}
.article-tags{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;
  padding-top:24px;border-top:1px solid var(--border);
}
.article-tags .tag{
  display:inline-block;
  background:#f1f5f9;color:var(--muted);
  font-size:13px;padding:6px 14px;border-radius:100px;
  transition:var(--trans);
}
.article-tags .tag:hover{background:#eef2ff;color:var(--accent)}
.not-found-box{
  text-align:center;padding:60px 20px;background:var(--card);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
}
.not-found-box .nf-icon{
  font-size:56px;margin-bottom:16px;
}
.not-found-box h2{font-size:24px;color:var(--primary);margin-bottom:12px}
.not-found-box p{color:var(--muted);margin-bottom:24px}
.not-found-box a{
  display:inline-block;
  background:var(--accent);color:#fff;
  padding:12px 32px;border-radius:100px;font-weight:600;
  transition:var(--trans);
}
.not-found-box a:hover{background:var(--accent-2);transform:translateY(-2px)}

/* ===== Sidebar ===== */
.article-sidebar{display:flex;flex-direction:column;gap:28px;position:sticky;top:100px}
.side-card{
  background:var(--card);border-radius:var(--radius-sm);
  box-shadow:var(--shadow-sm);border:1px solid var(--border);
  padding:24px;
  transition:var(--trans);
}
.side-card:hover{box-shadow:var(--shadow-md)}
.side-title{
  font-size:16px;font-weight:700;color:var(--primary);
  padding-bottom:14px;margin-bottom:16px;
  border-bottom:2px solid #f1f5f9;display:flex;align-items:center;gap:8px;
}
.side-title .icon{color:var(--accent)}
.side-links{list-style:none}
.side-links li{margin-bottom:6px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 14px;border-radius:10px;
  font-size:14px;color:var(--text);
  transition:var(--trans);
}
.side-links a:hover{background:#eef2ff;color:var(--accent);transform:translateX(4px)}
.side-links .count{font-size:12px;color:var(--muted);background:#f1f5f9;padding:2px 8px;border-radius:100px}
.side-tip{
  background:linear-gradient(135deg,#fefce8,#fffbeb);
}
.side-tip .tip-title{color:#92400e;font-weight:600;font-size:15px;margin-bottom:10px;display:flex;gap:8px;align-items:center}
.side-tip p{font-size:13.5px;color:#78350f;line-height:1.8}
.side-tip .tip-icon{font-size:18px}
.tip-card{
  background:linear-gradient(135deg,#f0f9ff,#eff6ff);
}
.tip-card .tip-title{color:#075985}
.tip-card p{color:#164e63}
.side-banner-card{
  border-radius:var(--radius-sm);
  overflow:hidden;
  position:relative;
  box-shadow:var(--shadow-md);
  min-height:200px;
  display:flex;align-items:flex-end;
}
.side-banner-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.side-banner-overlay{
  position:relative;z-index:2;padding:20px;
  background:linear-gradient(to top,rgba(15,23,42,.9),transparent);
  color:#fff;width:100%;
}
.side-banner-overlay p{font-size:14px;font-weight:600;line-height:1.5}

/* ===== Related Section ===== */
.related-section{padding:72px 0 0}
.section-header{
  display:flex;align-items:flex-end;justify-content:space-between;
  margin-bottom:36px;flex-wrap:wrap;gap:16px;
}
.section-eyebrow{
  display:inline-block;
  font-size:12px;font-weight:700;letter-spacing:2px;
  text-transform:uppercase;color:var(--accent);
  background:#eef2ff;padding:4px 14px;border-radius:100px;
  margin-bottom:10px;
}
.section-title{font-size:28px;font-weight:800;color:var(--primary);line-height:1.3}
.section-title .highlight{color:var(--accent)}
.section-sub{color:var(--muted);font-size:15px;margin-top:6px}
.section-link{
  font-size:14px;font-weight:600;color:var(--accent);
  display:inline-flex;align-items:center;gap:6px;
  transition:var(--trans);
}
.section-link:hover{gap:10px;color:var(--accent-2)}
.related-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
@media(max-width:1024px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.related-grid{grid-template-columns:1fr}}
.related-card{
  background:var(--card);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  transition:var(--trans);
  display:block;
}
.related-card:hover{
  transform:translateY(-6px);box-shadow:var(--shadow-lg);
  border-color:#c7d2fe;
}
.related-cover{
  position:relative;height:180px;overflow:hidden;
}
.related-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.related-card:hover .related-cover img{transform:scale(1.08)}
.related-cover::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to top,rgba(15,23,42,.35),transparent 50%);
}
.related-badge{
  position:absolute;top:14px;left:14px;z-index:3;
  background:rgba(255,255,255,.95);
  color:var(--primary);font-size:11px;font-weight:600;
  padding:4px 12px;border-radius:100px;
  box-shadow:var(--shadow-sm);
}
.related-body{padding:22px}
.related-body h4{
  font-size:16px;font-weight:600;color:var(--primary);
  line-height:1.55;margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-body .meta-row{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.related-body .date{display:flex;align-items:center;gap:5px}

/* ===== Stats Band ===== */
.stats-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0f172a,#1e1b4b);
  padding:80px 0;
  margin-top:72px;
}
.stats-band::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 20% 50%,rgba(99,102,241,.2),transparent 50%),
             radial-gradient(circle at 80% 80%,rgba(245,158,11,.12),transparent 40%);
}
.stats-band .container-x{position:relative;z-index:2}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  text-align:center;
}
@media(max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr);gap:36px 20px}}
.stat-item{}
.stat-num{
  font-size:44px;font-weight:800;line-height:1.2;
  background:linear-gradient(135deg,#fff,#c7d2fe);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{
  font-size:14px;color:rgba(255,255,255,.6);
  margin-top:6px;
}
.stat-divider{
  width:32px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,var(--gold),var(--accent));
  margin:8px auto 0;
}

/* ===== FAQ ===== */
.faq-section{padding:80px 0 0}
.faq-grid{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-sm);overflow:hidden;
  transition:var(--trans);
}
.faq-item.open{box-shadow:var(--shadow-md);border-color:#c7d2fe}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;text-align:left;
  font-size:15px;font-weight:600;color:var(--text);
  transition:var(--trans);
  gap:16px;
}
.faq-q:hover{color:var(--accent)}
.faq-q .faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  background:#eef2ff;color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;transition:var(--trans);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent);color:#fff}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .45s cubic-bezier(.4,0,.2,1);
  padding:0 24px;color:var(--muted);font-size:14.5px;line-height:1.9;
}
.faq-item.open .faq-a{max-height:400px;padding:0 24px 20px}

/* ===== CTA ===== */
.cta-section{padding:72px 0}
.cta-band{
  position:relative;overflow:hidden;
  border-radius:26px;
  padding:56px 60px;
  background:linear-gradient(135deg,#4f46e5,#7c3aed);
  box-shadow:0 24px 80px rgba(79,70,229,.35);
  text-align:center;
}
.cta-band::before{
  content:'';position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.12;
}
.cta-band .container-x{position:relative;z-index:2}
.cta-band h2{
  color:#fff;font-size:32px;font-weight:800;
  margin-bottom:12px;letter-spacing:.5px;
}
.cta-band p{color:rgba(255,255,255,.75);font-size:16px;margin-bottom:32px;max-width:600px;margin-left:auto;margin-right:auto}
.cta-btn{
  display:inline-block;
  background:#fff;color:var(--accent);
  font-size:15px;font-weight:700;
  padding:14px 40px;border-radius:100px;
  box-shadow:0 8px 30px rgba(0,0,0,.15);
  transition:var(--trans);
}
.cta-btn:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,.2)}
.cta-btn .arrow{margin-left:6px}
@media(max-width:768px){
  .cta-band{padding:40px 24px;border-radius:20px}
  .cta-band h2{font-size:24px}
}

/* ===== Footer ===== */
.site-footer{
  background:#0b1020;color:rgba(255,255,255,.7);
  padding:72px 0 0;
  position:relative;
}
.site-footer::before{
  content:'';position:absolute;top:0;left:0;right:0;
  height:4px;
  background:linear-gradient(90deg,var(--accent),var(--gold),var(--accent));
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08);
}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:36px}}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.55);max-width:380px}
.footer-title{
  font-size:15px;font-weight:700;color:#fff;
  margin-bottom:18px;letter-spacing:.5px;
  position:relative;padding-bottom:10px;
}
.footer-title::after{
  content:'';position:absolute;bottom:0;left:0;
  width:28px;height:2px;background:var(--gold);border-radius:2px;
}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,.55);
  transition:var(--trans);display:inline-flex;align-items:center;gap:6px;
}
.footer-links a::before{
  content:'';width:4px;height:4px;border-radius:50%;
  background:var(--gold);opacity:0;transition:var(--trans);
}
.footer-links a:hover{color:#fff;transform:translateX(4px)}
.footer-links a:hover::before{opacity:1}
.risk-tip{
  font-size:12.5px;line-height:1.8;color:rgba(255,255,255,.35);
  padding:24px 0;border-bottom:1px solid rgba(255,255,255,.06);
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  padding:24px 0;flex-wrap:wrap;gap:10px;
  font-size:13px;color:rgba(255,255,255,.4);
}
.footer-bottom a{color:rgba(255,255,255,.6);transition:var(--trans)}
.footer-bottom a:hover{color:#fff}

/* ===== Focus states ===== */
a:focus-visible,button:focus-visible{
  outline:3px solid rgba(99,102,241,.5);outline-offset:2px;border-radius:6px;
}

/* ===== Animations ===== */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
.fade-up{animation:fadeUp .7s ease both}
.fade-up-1{animation-delay:.1s}
.fade-up-2{animation-delay:.2s}
.fade-up-3{animation-delay:.3s}