/* roulang page: index */
:root {
            --brand: #0e2a4a;
            --brand-600: #17365c;
            --brand-800: #092238;
            --accent: #f97316;
            --accent-600: #ea580c;
            --bg: #f7f9fc;
            --surface: #ffffff;
            --text: #0f1e2e;
            --muted: #5c7082;
            --border: #e4eaf1;
            --radius-lg: 24px;
            --radius-md: 14px;
            --shadow-xs: 0 2px 10px rgba(10, 34, 58, .05);
            --shadow-sm: 0 6px 18px rgba(10, 34, 58, .07);
            --shadow-md: 0 14px 34px rgba(10, 34, 58, .10);
            --shadow-lg: 0 24px 56px rgba(10, 34, 58, .14);
            --font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
        }

        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            display: block;
            max-width: 100%;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        textarea {
            font-family: inherit;
        }

        .wrap {
            width: 100%;
            max-width: 1280px;
            margin-inline: auto;
            padding-inline: 24px;
        }
        .section {
            padding-block: 84px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(249, 115, 22, .09);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .05em;
            line-height: 1.4;
        }
        .h2-title {
            margin: 14px 0 0;
            font-size: clamp(1.75rem, 3.6vw, 2.7rem);
            line-height: 1.22;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text);
        }
        .h2-sub {
            margin: 12px auto 0;
            max-width: 680px;
            color: var(--muted);
            font-size: 1.04rem;
            line-height: 1.7;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 30px;
            border-radius: 999px;
            background: var(--brand);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 8px 24px rgba(14, 42, 74, .22);
            transition: transform .22s ease, box-shadow .22s ease, background .22s ease;
        }
        .btn-primary:hover {
            background: var(--brand-600);
            transform: translateY(-2px);
            box-shadow: 0 14px 34px rgba(14, 42, 74, .28);
        }
        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-accent {
            background: var(--accent);
            box-shadow: 0 8px 24px rgba(249, 115, 22, .30);
        }
        .btn-accent:hover {
            background: var(--accent-600);
            box-shadow: 0 14px 36px rgba(249, 115, 22, .36);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 30px;
            border-radius: 999px;
            border: 1.5px solid rgba(255, 255, 255, .55);
            background: rgba(255, 255, 255, .08);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            backdrop-filter: blur(6px);
            transition: all .22s ease;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .16);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }

        .nav-wrap {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(228, 234, 241, .85);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 12px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
        }
        .logo-mark {
            flex: 0 0 auto;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: var(--brand);
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            box-shadow: 0 6px 16px rgba(14, 42, 74, .24);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 5px;
            background: #f1f5f9;
            border-radius: 999px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--muted);
            transition: all .2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text);
            background: #fff;
            box-shadow: 0 4px 14px rgba(10, 34, 58, .08);
        }
        .nav-link.active {
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 6px 18px rgba(14, 42, 74, .18);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 6px 18px rgba(249, 115, 22, .28);
            transition: all .22s ease;
        }
        .nav-cta:hover {
            background: var(--accent-600);
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(249, 115, 22, .34);
        }
        .mobile-menu-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            color: var(--text);
            background: #f1f5f9;
            transition: background .2s ease;
        }
        .mobile-menu-btn:hover {
            background: #e2e8f0;
        }
        .mobile-drawer {
            padding: 12px 20px 20px;
            background: #fff;
            border-bottom: 1px solid var(--border);
        }
        .mobile-drawer a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 16px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: background .2s ease;
        }
        .mobile-drawer a:hover {
            background: #f8fafc;
        }
        .mobile-drawer a.active {
            color: var(--accent);
            background: rgba(249, 115, 22, .06);
        }

        .hero-section {
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(8, 28, 53, .95) 0%, rgba(14, 42, 74, .88) 45%, rgba(14, 42, 74, .55) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding-top: 92px;
            padding-bottom: 140px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .25);
            background: rgba(255, 255, 255, .08);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: .04em;
            backdrop-filter: blur(6px);
        }
        .hero-badge::before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 999px;
            background: #fb923c;
        }
        .hero-title {
            margin: 22px 0 0;
            font-size: clamp(2.3rem, 5.4vw, 4rem);
            line-height: 1.12;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .hero-title .orange {
            color: #fb923c;
        }
        .hero-sub {
            margin: 18px 0 0;
            max-width: 580px;
            color: rgba(226, 232, 240, .92);
            font-size: 1.12rem;
            line-height: 1.8;
        }
        .hero-actions {
            margin-top: 36px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-points {
            margin: 28px 0 0;
            padding: 0;
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 22px;
            color: rgba(203, 213, 225, .88);
            font-size: 14px;
        }
        .hero-points li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-points li::before {
            content: "✓";
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 18px;
            height: 18px;
            border-radius: 999px;
            background: rgba(249, 115, 22, .24);
            color: #fb923c;
            font-size: 11px;
            font-weight: 700;
        }

        .stats-row {
            position: relative;
            z-index: 5;
            margin-top: -70px;
        }
        .stat-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 28px 30px;
            text-align: left;
            transition: transform .25s ease, box-shadow .25s ease;
        }
        .stat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .stat-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--brand);
            line-height: 1.1;
        }
        .stat-num span {
            font-size: 15px;
            font-weight: 600;
            color: var(--accent);
            margin-left: 4px;
        }
        .stat-label {
            margin-top: 8px;
            color: var(--muted);
            font-size: 14px;
        }

        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xs);
            padding: 32px 28px;
            transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(14, 42, 74, .12);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(249, 115, 22, .10);
            color: var(--accent);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            margin: 0 0 10px;
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
        }
        .feature-card p {
            margin: 0;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.75;
        }

        .feature-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 54px;
        }
        .feature-panel img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
        }
        .feature-list {
            margin: 26px 0 0;
            padding: 0;
            list-style: none;
            display: grid;
            gap: 14px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.6;
        }
        .feature-list .check {
            flex: 0 0 auto;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            background: rgba(249, 115, 22, .12);
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            margin-top: 2px;
        }

        .category-card {
            position: relative;
            display: block;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            transition: transform .28s ease, box-shadow .28s ease;
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .category-card img {
            width: 100%;
            height: 216px;
            object-fit: cover;
            transition: transform .40s ease;
        }
        .category-card:hover img {
            transform: scale(1.04);
        }
        .category-card-body {
            padding: 26px 26px 30px;
        }
        .category-card h3 {
            margin: 0;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
        }
        .category-card p {
            margin: 12px 0 0;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.7;
        }
        .category-tags {
            margin-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            background: #f1f5f9;
            color: var(--muted);
            font-size: 12px;
            font-weight: 500;
        }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 20px;
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
            transition: gap .2s ease;
        }
        .category-card:hover .category-link {
            gap: 12px;
        }

        .news-list {
            margin-top: 42px;
        }
        .news-card {
            display: block;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px 28px;
            box-shadow: var(--shadow-xs);
            transition: transform .26s ease, box-shadow .26s ease, border-color .26s ease;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: rgba(14, 42, 74, .12);
        }
        .news-card .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 14px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(249, 115, 22, .10);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
        }
        .news-card .date {
            color: #94a3b8;
            font-size: 13px;
        }
        .news-card h3 {
            margin: 0;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
        }
        .news-card .desc {
            margin: 10px 0 0;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            padding: 48px 24px;
            text-align: center;
            background: var(--surface);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
            color: var(--muted);
            font-size: 15px;
        }

        .step-card {
            position: relative;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 34px 28px 30px;
            box-shadow: var(--shadow-xs);
            transition: transform .26s ease, box-shadow .26s ease;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            padding-inline: 10px;
            border-radius: 14px;
            background: var(--brand);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            box-shadow: 0 8px 20px rgba(14, 42, 74, .18);
        }
        .step-card h3 {
            margin: 0 0 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
        }
        .step-card p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-xs);
            overflow: hidden;
            transition: box-shadow .22s ease, border-color .22s ease;
        }
        .faq-item.open {
            border-color: rgba(249, 115, 22, .30);
            box-shadow: var(--shadow-sm);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 20px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: color .2s ease;
        }
        .faq-q:hover {
            color: var(--accent);
        }
        .faq-q svg {
            flex: 0 0 auto;
            transition: transform .3s ease;
        }
        .faq-item.open .faq-q svg {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-a {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.75;
            transition: max-height .32s ease, padding .32s ease;
        }
        .faq-item.open .faq-a {
            max-height: 360px;
            padding: 0 24px 22px;
        }

        .cta-section {
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(9, 34, 56, .96) 0%, rgba(14, 42, 74, .86) 60%, rgba(14, 42, 74, .70) 100%);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            padding-block: 78px;
            text-align: center;
        }
        .cta-title {
            margin: 0;
            font-size: clamp(1.8rem, 4vw, 3rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            line-height: 1.28;
        }
        .cta-sub {
            margin: 16px auto 0;
            max-width: 620px;
            color: rgba(226, 232, 240, .90);
            font-size: 1.08rem;
            line-height: 1.75;
        }
        .cta-actions {
            margin-top: 34px;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        .site-footer {
            background: var(--brand-800);
            color: rgba(226, 232, 240, .85);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-block: 60px 40px;
        }
        .footer-brand .logo {
            color: #fff;
        }
        .footer-brand .logo-mark {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 20px rgba(249, 115, 22, .24);
        }
        .footer-desc {
            margin: 20px 0 0;
            font-size: 14px;
            line-height: 1.8;
            color: rgba(203, 213, 225, .80);
            max-width: 340px;
        }
        .footer-title {
            margin: 0 0 20px;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
        }
        .footer-nav {
            margin: 0;
            padding: 0;
            list-style: none;
            display: grid;
            gap: 12px;
        }
        .footer-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(203, 213, 225, .82);
            transition: color .2s ease, transform .2s ease;
        }
        .footer-nav a:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .10);
            padding-block: 22px;
            text-align: center;
            font-size: 13px;
            color: rgba(203, 213, 225, .60);
        }
        .footer-bottom a {
            color: rgba(251, 146, 60, .92);
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: inline-flex !important;
            }
            .feature-panel {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (min-width: 1025px) {
            .mobile-menu-btn {
                display: none !important;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding-block: 60px;
            }
            .hero-content {
                padding-top: 64px;
                padding-bottom: 110px;
            }
            .hero-title {
                font-size: clamp(1.9rem, 7vw, 2.8rem);
            }
            .stats-row {
                margin-top: -38px;
            }
        }
        @media (max-width: 520px) {
            .wrap {
                padding-inline: 18px;
            }
            .nav-inner {
                height: 64px;
            }
            .logo {
                font-size: .95rem;
            }
            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 15px;
                border-radius: 10px;
            }
            .hero-content {
                padding-top: 56px;
                padding-bottom: 96px;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                justify-content: center;
            }
            .hero-points {
                flex-direction: column;
                gap: 12px;
            }
            .stat-card {
                padding: 24px 22px;
            }
            .feature-card {
                padding: 26px 22px;
            }
            .category-card-body {
                padding: 22px 20px 24px;
            }
            .news-card {
                padding: 22px 20px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-outline {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }

        :focus-visible {
            outline: 3px solid rgba(249, 115, 22, .55);
            outline-offset: 2px;
            border-radius: 6px;
        }

/* roulang page: article */
/* 设计变量 */
        :root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --bg-alt: #f1f5f9;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.12);
        }

        /* 基础 reset */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        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;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        ul {
            list-style: none;
        }
        .wrap {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        .nav-wrap {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-weight: 700;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-alt);
            padding: 4px;
            border-radius: 999px;
        }
        .nav-link {
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--text);
            background: rgba(37, 99, 235, 0.06);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            transition: background 0.2s ease, transform 0.2s ease;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        .mobile-menu-btn {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: var(--bg-alt);
            color: var(--text);
        }
        .mobile-drawer {
            display: none;
            padding: 12px 24px 20px;
            border-top: 1px solid var(--border);
            background: #fff;
        }
        .mobile-drawer a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 4px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-bottom: 1px solid var(--bg-alt);
        }
        .mobile-drawer a:last-child {
            border-bottom: none;
        }
        .mobile-drawer a.active {
            color: var(--primary);
        }
        .mobile-drawer a span {
            color: var(--text-weak);
        }

        /* 内页横幅 */
        .page-hero {
            background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #3b82f6 100%);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 1;
        }
        .page-hero .wrap {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            color: #fff;
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            max-width: 640px;
            line-height: 1.8;
        }

        /* 文章详情 */
        .article-section {
            padding: 56px 0;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-main {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 48px;
            border: 1px solid var(--border);
        }
        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .article-header .category-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .article-header h1 {
            font-size: 30px;
            line-height: 1.4;
            color: var(--text);
            font-weight: 700;
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            color: var(--text-weak);
            font-size: 14px;
            flex-wrap: wrap;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--primary);
            font-size: 13px;
        }
        .article-content {
            color: #334155;
            font-size: 16px;
            line-height: 1.9;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content h2 {
            font-size: 24px;
            color: var(--text);
            margin: 32px 0 16px;
            font-weight: 700;
        }
        .article-content h3 {
            font-size: 19px;
            color: var(--text);
            margin: 24px 0 12px;
            font-weight: 600;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-content ul {
            margin: 16px 0;
            padding-left: 0;
        }
        .article-content ul li {
            padding-left: 24px;
            position: relative;
            margin-bottom: 8px;
        }
        .article-content ul li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-alt);
            padding: 16px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
            color: var(--text-weak);
        }
        .article-footer {
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .article-tags a {
            background: var(--bg-alt);
            color: var(--text-weak);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 13px;
            transition: all 0.2s;
        }
        .article-tags a:hover {
            background: var(--primary);
            color: #fff;
        }

        /* 侧边栏 */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 96px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-card h3 i {
            color: var(--primary);
        }
        .sidebar-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--bg-alt);
        }
        .sidebar-list li:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        .sidebar-list a {
            color: var(--text);
            font-size: 14px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
            transition: color 0.2s;
        }
        .sidebar-list a:hover {
            color: var(--primary);
        }
        .sidebar-list a span {
            color: var(--primary);
            font-weight: 700;
        }
        .sidebar-cta {
            background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .sidebar-cta::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
        }
        .sidebar-cta>* {
            position: relative;
            z-index: 1;
        }
        .sidebar-cta h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .sidebar-cta p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            margin-bottom: 20px;
            line-height: 1.7;
        }
        .sidebar-cta .cta-btn {
            display: inline-block;
            background: #fff;
            color: var(--primary);
            padding: 10px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .sidebar-cta .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
            color: var(--primary-dark);
        }

        /* 相关文章 */
        .related-section {
            padding: 48px 0 64px;
            background: var(--bg-alt);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            text-align: center;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-weak);
            font-size: 15px;
            margin-bottom: 40px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .related-card-body {
            padding: 20px;
        }
        .related-card h4 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .related-card h4 a {
            color: var(--text);
        }
        .related-card h4 a:hover {
            color: var(--primary);
        }
        .related-card p {
            color: var(--text-weak);
            font-size: 13px;
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* FAQ */
        .faq-section {
            padding: 56px 0;
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 28px;
            margin-bottom: 16px;
            transition: box-shadow 0.2s;
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        .faq-item h4::before {
            content: 'Q';
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .faq-item p {
            color: var(--text-weak);
            font-size: 15px;
            padding-left: 40px;
            line-height: 1.8;
        }

        /* CTA 区块 */
        .cta-section {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 48px 0;
            text-align: center;
        }
        .cta-content {
            max-width: 720px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        .cta-content p {
            color: var(--text-weak);
            margin-bottom: 24px;
            font-size: 16px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 999px;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 10px 30px;
            border-radius: 999px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-outline:hover {
            background: rgba(37, 99, 235, 0.1);
            transform: translateY(-2px);
        }

        /* 页脚 */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
        }
        .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 .logo:hover {
            color: #fff;
        }
        .footer-brand .logo-mark {
            background: #fff;
            color: var(--primary);
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 16px;
            max-width: 360px;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .footer-nav li {
            margin-bottom: 12px;
        }
        .footer-nav a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s;
        }
        .footer-nav a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .sidebar-card {
                flex: 1;
                min-width: 240px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .mobile-drawer {
                display: block;
            }
            .nav-inner {
                height: 64px;
            }
            .page-hero {
                padding: 48px 0;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .article-main {
                padding: 24px;
            }
            .article-header h1 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .wrap {
                padding: 0 16px;
            }
            .logo span:last-child {
                font-size: 16px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero p {
                font-size: 14px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                max-width: 280px;
            }
            .article-main {
                padding: 20px;
            }
            .article-meta {
                gap: 12px;
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-bottom {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a56db;
            --primarydark: #1e40af;
            --secondary: #f59e0b;
            --accent: #10b981;
            --ink: #0f172a;
            --softgray: #f8fafc;
            --border: #e2e8f0;
            --radius: 16px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.10);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', -apple-system, sans-serif;
            color: var(--ink);
            background: #ffffff;
            line-height: 1.7;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        .wrap {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .nav-wrap {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primarydark));
            color: #fff;
            border-radius: 10px;
            font-size: 20px;
            font-weight: 900;
            box-shadow: 0 4px 12px rgba(26, 86, 219, 0.30);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
        }
        .nav-tabs {
            display: flex;
            gap: 6px;
            background: #f1f5f9;
            padding: 5px;
            border-radius: 999px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: #475569;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(255, 255, 255, 0.7);
        }
        .nav-link.active {
            background: #ffffff;
            color: var(--primary);
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary), var(--primarydark));
            color: #fff;
            padding: 10px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.35);
            transition: all 0.25s ease;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(26, 86, 219, 0.42);
        }
        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--border);
            border-radius: 12px;
            background: #fff;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--ink);
        }
        .mobile-menu-btn:hover {
            background: var(--softgray);
        }
        .mobile-drawer {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 16px 24px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-drawer a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 12px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            color: #334155;
            transition: background 0.2s ease;
        }
        .mobile-drawer a:hover {
            background: var(--softgray);
        }
        .mobile-drawer a.active {
            background: #eff6ff;
            color: var(--primary);
            font-weight: 700;
        }
        .mobile-drawer a span {
            color: var(--primary);
            font-size: 18px;
        }

        @media (max-width: 900px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: inline-flex;
            }
            .mobile-drawer.open {
                display: flex;
            }
            .nav-cta {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .wrap {
                padding: 0 16px;
            }
            .nav-inner {
                height: 64px;
            }
            .logo {
                font-size: 17px;
            }
            .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 17px;
                border-radius: 8px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 64px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo-mark {
            background: linear-gradient(135deg, var(--secondary), #f97316);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.30);
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #94a3b8;
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-nav {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-nav a {
            color: #94a3b8;
            font-size: 14px;
            transition: color 0.2s, padding-left 0.2s;
        }
        .footer-nav a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            padding-top: 24px;
            font-size: 13px;
            color: #64748b;
            text-align: center;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* ===== 分类页面独有样式 ===== */
        .entry-hero {
            background: linear-gradient(135deg, #1e3a8a 0%, #1a56db 55%, #3b82f6 100%);
            position: relative;
            overflow: hidden;
            padding: 88px 0 72px;
            color: #fff;
        }
        .entry-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
        }
        .entry-hero::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.18) 0%, transparent 70%);
        }
        .entry-hero .wrap {
            position: relative;
            z-index: 2;
        }
        .entry-hero .hero-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(6px);
            margin-bottom: 24px;
        }
        .entry-hero h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 18px;
        }
        .entry-hero p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            line-height: 1.8;
        }
        .entry-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }
        .entry-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .entry-hero {
                padding: 64px 0 48px;
            }
            .entry-hero h1 {
                font-size: 32px;
            }
        }

        .section-pad {
            padding: 80px 0;
        }
        .section-pad-sm {
            padding: 56px 0;
        }
        .section-head {
            margin-bottom: 48px;
            max-width: 640px;
        }
        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--ink);
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 15px;
            color: #64748b;
            line-height: 1.7;
        }
        @media (max-width: 520px) {
            .section-pad {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
        }

        /* 入口方式卡片 */
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .entry-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 32px;
            transition: all 0.25s ease;
            position: relative;
            overflow: hidden;
        }
        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity 0.25s ease;
        }
        .entry-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
            border-color: rgba(26, 86, 219, 0.3);
        }
        .entry-card:hover::before {
            opacity: 1;
        }
        .entry-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            color: #fff;
        }
        .entry-card .card-icon.blue {
            background: linear-gradient(135deg, #1a56db, #3b82f6);
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.3);
        }
        .entry-card .card-icon.green {
            background: linear-gradient(135deg, #059669, #10b981);
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
        }
        .entry-card .card-icon.amber {
            background: linear-gradient(135deg, #d97706, #f59e0b);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
        }
        .entry-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .entry-card p {
            font-size: 14px;
            color: #64748b;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .entry-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .entry-card .tag {
            background: #f1f5f9;
            color: #475569;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 999px;
        }
        @media (max-width: 900px) {
            .entry-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
            }
        }

        /* 时间线 */
        .steps-panel {
            background: var(--softgray);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 40px;
        }
        .steps-list {
            list-style: none;
            position: relative;
            padding-left: 32px;
        }
        .steps-list::before {
            content: '';
            position: absolute;
            left: 11px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }
        .steps-list li {
            position: relative;
            padding: 0 0 32px 24px;
        }
        .steps-list li::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 4px;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 86, 219, 0.15);
            z-index: 1;
        }
        .steps-list li:last-child {
            padding-bottom: 0;
        }
        .steps-list .step-num {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 4px;
        }
        .steps-list h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .steps-list p {
            font-size: 14px;
            color: #64748b;
            line-height: 1.7;
        }
        @media (max-width: 520px) {
            .steps-panel {
                padding: 28px 20px;
            }
        }

        /* 文章卡片 */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .article-card .thumb {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .article-card .thumb .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(15, 23, 42, 0.7);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            font-weight: 500;
        }
        .article-card .body {
            padding: 20px;
        }
        .article-card .meta {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: #94a3b8;
            margin-bottom: 8px;
        }
        .article-card .meta .dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: #cbd5e1;
        }
        .article-card h3 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--ink);
            transition: color 0.2s;
        }
        .article-card:hover h3 {
            color: var(--primary);
        }
        .article-card .body p {
            font-size: 13px;
            color: #64748b;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        @media (max-width: 900px) {
            .article-grid {
                grid-template-columns: 1fr;
                max-width: 520px;
            }
        }

        /* FAQ */
        .faq-panel {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(26, 86, 219, 0.3);
        }
        .faq-item summary {
            padding: 22px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            position: relative;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 300;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item .faq-body {
            padding: 0 24px 22px;
            font-size: 14px;
            color: #64748b;
            line-height: 1.8;
        }

        /* CTA */
        .cta-panel {
            background: linear-gradient(135deg, #1e3a8a, #1a56db 60%, #3b82f6);
            border-radius: 24px;
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
            color: #fff;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-panel h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-panel p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 480px;
            margin-bottom: 28px;
        }
        .cta-panel .cta-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cta-panel .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 700;
            transition: all 0.25s ease;
        }
        .cta-panel .btn-white {
            background: #fff;
            color: var(--primary);
        }
        .cta-panel .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 255, 255, 0.25);
        }
        .cta-panel .btn-outline {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        .cta-panel .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }
        @media (max-width: 520px) {
            .cta-panel {
                padding: 40px 24px;
            }
            .cta-panel h3 {
                font-size: 22px;
            }
            .cta-panel .cta-buttons {
                flex-direction: column;
            }
            .cta-panel .btn {
                justify-content: center;
            }
        }

        /* 信息卡片 */
        .info-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .info-card {
            text-align: center;
            padding: 28px 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            transition: all 0.25s ease;
        }
        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .info-card .num {
            font-size: 32px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .info-card .label {
            font-size: 13px;
            color: #64748b;
            margin-top: 6px;
            font-weight: 500;
        }
        @media (max-width: 900px) {
            .info-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .bg-soft {
            background: var(--softgray);
        }
        .card-shadow {
            box-shadow: var(--shadow);
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --primary-light: #6366f1;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --wrap: 1200px;
            --section-pad: 80px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.2s ease;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器与板块 ===== */
        .wrap {
            max-width: var(--wrap);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--section-pad) 0;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--text);
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.6;
        }

        /* ===== 导航 ===== */
        .nav-wrap {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--text);
            white-space: nowrap;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .desktop-nav {
            display: block;
        }
        .nav-tabs {
            display: flex;
            gap: 4px;
            background: #f1f5f9;
            padding: 4px;
            border-radius: 12px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: 8px;
            font-size: 15px;
            color: var(--text-muted);
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .nav-link:hover {
            color: var(--text);
            background: #e2e8f0;
        }
        .nav-link.active {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
        }
        .nav-cta {
            display: none;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff !important;
            padding: 10px 22px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.2s ease;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
        }
        .mobile-menu-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            transition: all 0.2s ease;
        }
        .mobile-menu-btn:hover {
            border-color: var(--primary-light);
            color: var(--primary);
        }
        .mobile-drawer {
            display: none;
            padding: 16px 24px 24px;
            background: #fff;
            border-top: 1px solid var(--border);
        }
        .mobile-drawer.open {
            display: block;
            animation: drawerFade 0.25s ease;
        }
        .mobile-drawer a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 13px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            border-bottom: 1px solid #f1f5f9;
        }
        .mobile-drawer a:last-child {
            border-bottom: none;
        }
        .mobile-drawer a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-drawer a span {
            color: var(--text-light);
            font-size: 14px;
        }

        @keyframes drawerFade {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== Hero ===== */
        .feature-hero {
            position: relative;
            background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 55%, #312e81 100%);
            padding: 100px 0;
            overflow: hidden;
        }
        .feature-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            opacity: 0.18;
        }
        .feature-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.25) 0%, transparent 50%);
        }
        .feature-hero .wrap {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: #c7d2fe;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.02em;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 12px;
        }
        .feature-hero h1 {
            color: #fff;
            font-size: 44px;
            line-height: 1.15;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin: 20px 0 16px;
        }
        .feature-hero p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 18px;
            line-height: 1.7;
            max-width: 640px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 32px;
        }
        .hero-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary) !important;
            padding: 14px 30px;
            border-radius: 14px;
            font-weight: 700;
            font-size: 15px;
            transition: all 0.25s ease;
        }
        .hero-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 255, 255, 0.2);
        }
        .hero-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff !important;
            padding: 14px 30px;
            border-radius: 14px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.25s ease;
        }
        .hero-btn-outline:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 功能卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 30px;
            transition: all 0.25s ease;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(99, 102, 241, 0.3);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            background: var(--primary);
            margin-bottom: 18px;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.65;
        }

        /* ===== 图文深度解析 ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .split-media {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .split-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .split-media .media-tag {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            color: var(--text);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .split-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .split-content .lead {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 20px;
        }
        .content-list li {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid #f1f5f9;
            align-items: flex-start;
        }
        .content-list li:last-child {
            border-bottom: none;
        }
        .list-icon {
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
            margin-top: 4px;
            width: 22px;
            text-align: center;
        }
        .content-list .list-text {
            font-size: 15px;
            color: var(--text);
            line-height: 1.6;
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 36px 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
            transition: all 0.25s ease;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: rgba(99, 102, 241, 0.25);
        }
        .step-item::after {
            content: "";
            position: absolute;
            top: 50%;
            right: -20px;
            width: 40px;
            height: 2px;
            background: linear-gradient(90deg, var(--border), var(--primary-light));
            transform: translateY(-50%);
            z-index: 1;
        }
        .step-item:last-child::after {
            display: none;
        }
        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 18px;
            box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
        }
        .step-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .step-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 数据统计 ===== */
        .stats-block {
            background: var(--bg-dark);
            padding: 64px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            text-align: center;
        }
        .stat-num {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .stat-label {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            margin-top: 6px;
            letter-spacing: 0.02em;
        }
        .stat-icon {
            font-size: 28px;
            margin-bottom: 12px;
            color: var(--primary-light);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(99, 102, 241, 0.3);
        }
        .faq-item.open {
            box-shadow: var(--shadow);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
        }
        .faq-question .icon {
            color: var(--primary);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(90deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }
        .cta-block::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-block .wrap {
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-desc {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary) !important;
            padding: 16px 36px;
            border-radius: 14px;
            font-weight: 700;
            font-size: 16px;
            transition: all 0.25s ease;
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo .logo-mark {
            background: #fff;
            color: var(--primary);
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            max-width: 340px;
            line-height: 1.7;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-nav li {
            margin-bottom: 10px;
        }
        .footer-nav a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: all 0.2s ease;
        }
        .footer-nav a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .step-item::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .nav-cta {
                display: none !important;
            }
            .mobile-menu-btn {
                display: inline-flex;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .feature-hero {
                padding: 72px 0;
            }
            .feature-hero h1 {
                font-size: 30px;
            }
            .feature-hero p {
                font-size: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .cta-block {
                padding: 40px 24px;
            }
            .cta-title {
                font-size: 24px;
            }
            .brand-logo span:last-child {
                font-size: 18px;
            }
        }

        @media (max-width: 640px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .wrap {
                padding: 0 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions a {
                justify-content: center;
            }
            .split-media img {
                min-height: 220px;
            }
            .footer-bottom {
                font-size: 12px;
            }
        }