/* roulang page: index */
:root {
            --primary: #1E7A46;
            --primary-dark: #155A34;
            --primary-pale: #E8F3EE;
            --accent: #D99E2B;
            --bg: #F7F6F3;
            --bg-dark: #1C1F1E;
            --surface: #FFFFFF;
            --text: #22261F;
            --text-sub: #5A615A;
            --border: #E2DFD6;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.07);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 96px 0;
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
            gap: 16px;
            flex-wrap: wrap;
        }
        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            padding-left: 16px;
            border-left: 4px solid var(--accent);
        }
        .section-header .section-desc {
            color: var(--text-sub);
            font-size: 16px;
            width: 100%;
            padding-left: 20px;
            margin-top: -8px;
        }
        .section-header a {
            color: var(--primary);
            font-weight: 500;
            font-size: 14px;
        }
        .section-header a:hover {
            text-decoration: underline;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: none;
            min-height: 44px;
            transition: all 0.25s ease;
            box-shadow: none;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--surface);
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            min-height: 44px;
            transition: all 0.25s ease;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }

        /* 左侧导航 */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 260px;
            height: 100vh;
            background: var(--surface);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 100;
            padding: 32px 24px;
        }
        .sidebar-brand {
            margin-bottom: 48px;
        }
        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            display: inline-block;
        }
        .brand-logo span {
            display: block;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-sub);
            margin-top: 4px;
            letter-spacing: 1px;
        }
        .brand-logo .logo-accent {
            color: var(--accent);
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--text);
            font-weight: 500;
            border-left: 4px solid transparent;
            transition: all 0.2s ease;
        }
        .nav-item svg {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            color: var(--text-sub);
            transition: color 0.2s ease;
        }
        .nav-item:hover {
            background: var(--primary-pale);
            color: var(--primary);
        }
        .nav-item:hover svg {
            color: var(--primary);
        }
        .nav-item.active {
            background: var(--primary-pale);
            color: var(--primary);
            border-left-color: var(--accent);
            font-weight: 600;
        }
        .nav-item.active svg {
            color: var(--primary);
        }
        .sidebar-footer {
            margin-top: auto;
        }
        .sidebar-footer .btn-primary {
            width: 100%;
        }
        .sidebar-copyright {
            font-size: 12px;
            color: var(--text-sub);
            text-align: center;
            margin-top: 20px;
            line-height: 1.6;
        }

        /* 主内容区 */
        .main-content {
            margin-left: 260px;
            min-height: 100vh;
        }

        /* 移动端 header */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            z-index: 200;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
        }
        .mobile-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
        }
        .mobile-brand span {
            color: var(--accent);
        }
        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        /* 移动端抽屉 */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: var(--surface);
            z-index: 300;
            padding: 48px 28px;
            transition: right 0.35s ease;
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .drawer-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text);
            padding: 8px;
            line-height: 1;
        }
        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 32px;
            flex: 1;
        }
        .drawer-item {
            font-size: 18px;
            font-weight: 500;
            padding: 14px 12px;
            border-radius: var(--radius-sm);
            color: var(--text);
        }
        .drawer-item:hover {
            background: var(--primary-pale);
            color: var(--primary);
        }
        .drawer-item.active {
            background: var(--primary-pale);
            color: var(--primary);
            font-weight: 600;
        }
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 250;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        .drawer-overlay.show {
            opacity: 1;
            visibility: visible;
        }

        /* Hero */
        .hero {
            background: linear-gradient(rgba(247, 246, 243, 0.88), rgba(247, 246, 243, 0.94)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 120px 0 100px;
            position: relative;
            border-bottom: 1px solid var(--border);
        }
        .hero-badge {
            display: inline-block;
            background: var(--primary-pale);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            max-width: 680px;
            margin-bottom: 20px;
        }
        .hero h1 .highlight {
            color: var(--primary);
        }
        .hero h1 .highlight-accent {
            color: var(--accent);
        }
        .hero-sub {
            font-size: 18px;
            color: var(--text-sub);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }
        .hero-stats {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }
        .hero-stats div {
            display: flex;
            flex-direction: column;
        }
        .hero-stats strong {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stats span {
            font-size: 14px;
            color: var(--text-sub);
        }

        /* 最新资讯 */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-card {
            display: flex;
            align-items: center;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            gap: 24px;
            transition: all 0.25s ease;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .news-date {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: var(--primary-pale);
            border-radius: var(--radius-sm);
            min-width: 72px;
            padding: 12px 8px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .news-date .day {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.1;
        }
        .news-date .month {
            font-size: 12px;
            color: var(--text-sub);
            margin-top: 4px;
        }
        .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-category {
            display: inline-block;
            background: var(--primary-pale);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            margin-bottom: 6px;
        }
        .news-content h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-content h3 a:hover {
            color: var(--primary);
        }
        .news-content p {
            font-size: 14px;
            color: var(--text-sub);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 8px;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-sub);
        }
        .news-meta a {
            color: var(--primary);
            font-weight: 500;
        }
        .news-meta a:hover {
            text-decoration: underline;
        }
        .news-empty {
            background: var(--surface);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            padding: 48px 24px;
            text-align: center;
            color: var(--text-sub);
            font-size: 15px;
        }

        /* 核心卖点 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px;
            transition: all 0.3s ease;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--primary-pale);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .feature-icon svg {
            width: 26px;
            height: 26px;
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-card .feature-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
        }
        .feature-card .feature-link:hover {
            text-decoration: underline;
        }

        /* 演示区 */
        .demo-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .demo-text h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 24px;
            line-height: 1.3;
        }
        .demo-steps {
            list-style: none;
            margin-bottom: 32px;
        }
        .demo-steps li {
            position: relative;
            padding-left: 36px;
            font-size: 16px;
            color: var(--text);
            margin-bottom: 18px;
            line-height: 1.6;
        }
        .demo-steps li::before {
            content: counter(step);
            counter-increment: step;
            position: absolute;
            left: 0;
            top: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .demo-steps {
            counter-reset: step;
        }
        .demo-image img {
            border-radius: 16px;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
            border: 1px solid var(--border);
        }

        /* 证据区 */
        .evidence-section {
            background: var(--bg-dark);
            color: #fff;
        }
        .evidence-section h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 16px;
            text-align: center;
        }
        .evidence-intro {
            text-align: center;
            color: rgba(255, 255, 255, 0.7);
            max-width: 640px;
            margin: 0 auto 56px;
            font-size: 15px;
        }
        .evidence-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            text-align: center;
        }
        .evidence-item strong {
            display: block;
            font-size: 48px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .evidence-item span {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 8px;
            display: block;
        }

        /* 价格区 */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: start;
        }
        .pricing-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 32px;
            text-align: center;
            position: relative;
            transition: all 0.3s ease;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .pricing-card.recommended {
            border-color: var(--accent);
            border-width: 2px;
            padding-top: 44px;
            padding-bottom: 44px;
        }
        .pricing-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 20px;
            border-radius: 999px;
            letter-spacing: 1px;
        }
        .pricing-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .pricing-price {
            font-size: 44px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 24px;
        }
        .pricing-price small {
            font-size: 16px;
            font-weight: 400;
            color: var(--text-sub);
        }
        .pricing-features {
            list-style: none;
            margin-bottom: 32px;
            text-align: left;
        }
        .pricing-features li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .pricing-features li::before {
            content: '✓';
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
        }
        .pricing-note {
            text-align: center;
            font-size: 13px;
            color: var(--text-sub);
            margin-top: 24px;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: border-color 0.2s ease;
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-item.open {
            border-color: var(--primary);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text);
            gap: 16px;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-pale);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            flex-shrink: 0;
            transition: all 0.3s ease;
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* 最终 CTA */
        .final-cta {
            background: linear-gradient(rgba(28, 31, 30, 0.92), rgba(28, 31, 30, 0.95)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 100px 0;
            text-align: center;
            color: #fff;
        }
        .final-cta h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .final-cta p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 36px;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-light {
            background: var(--accent);
            color: #fff;
        }
        .btn-light:hover {
            background: #c78c20;
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.5);
            min-height: 44px;
            transition: all 0.25s ease;
        }
        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-links h4,
        .footer-contact h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links a {
            display: block;
            font-size: 14px;
            padding: 6px 0;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact p {
            font-size: 14px;
            padding: 4px 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* 浮动 CTA */
        .floating-cta {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 150;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 12px;
        }
        .floating-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            box-shadow: 0 8px 24px rgba(30, 122, 70, 0.3);
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 8px;
            text-align: center;
            line-height: 1.2;
        }
        .floating-btn:hover {
            background: var(--primary-dark);
            transform: scale(1.05);
        }
        .floating-options {
            display: flex;
            flex-direction: column;
            gap: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.25s ease;
        }
        .floating-options.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .floating-options a {
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            text-align: center;
            white-space: nowrap;
            transition: all 0.2s ease;
        }
        .floating-options a:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .sidebar {
                display: none;
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .section {
                padding: 56px 0;
            }
            .hero {
                padding: 90px 0 70px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .demo-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                max-width: 480px;
                margin: 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stats strong {
                font-size: 26px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .final-cta h2 {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: left;
            }
            .news-card {
                flex-direction: row;
                padding: 16px;
                gap: 16px;
            }
            .news-date {
                min-width: 56px;
                padding: 10px 6px;
            }
            .news-content h3 {
                font-size: 15px;
            }
            .news-content p {
                display: none;
            }
            .evidence-grid {
                gap: 24px;
            }
            .evidence-item strong {
                font-size: 36px;
            }
        }

        @media (max-width: 520px) {
            .hero {
                padding: 70px 0 50px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .news-date {
                display: none;
            }
            .news-meta {
                flex-wrap: wrap;
                gap: 8px;
            }
            .pricing-card {
                padding: 28px 20px;
            }
            .floating-cta {
                bottom: 20px;
                right: 20px;
            }
        }

        @media (min-width: 1025px) {
            .mobile-header,
            .mobile-drawer,
            .drawer-overlay {
                display: none !important;
            }
        }

/* roulang page: article */
:root {
            --primary: #1E7A46;
            --primary-dark: #155A34;
            --primary-pale: #E8F3EE;
            --accent: #D99E2B;
            --bg: #F7F6F3;
            --bg-dark: #1C1F1E;
            --surface: #FFFFFF;
            --text: #22261F;
            --text-sub: #5A615A;
            --border: #E2DFD6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.07);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: all .25s ease;
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-custom {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Layout: left sidebar + right content */
        .layout-wrapper {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            width: 260px;
            min-height: 100vh;
            background: var(--surface);
            border-right: 1px solid var(--border);
            position: fixed;
            top: 0;
            left: 0;
            display: flex;
            flex-direction: column;
            z-index: 100;
        }
        .sidebar-brand {
            padding: 32px 24px 24px;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-brand .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            display: block;
            text-decoration: none;
        }
        .sidebar-brand .logo .gold {
            color: var(--accent);
        }
        .sidebar-brand .logo-sub {
            font-size: 12px;
            color: var(--text-sub);
            margin-top: 4px;
            letter-spacing: 1px;
        }
        .sidebar-nav {
            flex: 1;
            padding: 24px 16px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 15px;
            color: var(--text);
            font-weight: 500;
            border-left: 4px solid transparent;
            transition: all .2s ease;
            text-decoration: none;
            line-height: 1.4;
        }
        .nav-item svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            opacity: .75;
        }
        .nav-item:hover {
            background: var(--primary-pale);
            color: var(--primary-dark);
            text-decoration: none;
            border-left-color: var(--primary);
        }
        .nav-item.active {
            background: var(--primary-pale);
            color: var(--primary-dark);
            border-left-color: var(--accent);
            font-weight: 600;
        }
        .sidebar-cta {
            padding: 20px;
        }
        .sidebar-cta .btn-login-side {
            width: 100%;
            padding: 12px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all .25s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .sidebar-cta .btn-login-side:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(30, 122, 70, .3);
        }
        .sidebar-bottom {
            padding: 20px 24px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: var(--text-sub);
        }
        /* Main content area */
        .main-area {
            margin-left: 260px;
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 99;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 14px 20px;
            align-items: center;
            justify-content: space-between;
        }
        .mobile-header .logo {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            text-decoration: none;
        }
        .mobile-header .logo .gold {
            color: var(--accent);
        }
        .mobile-toggle {
            background: none;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 10px;
            cursor: pointer;
            font-size: 18px;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -100%;
            width: 82%;
            max-width: 360px;
            height: 100vh;
            background: var(--surface);
            z-index: 200;
            transition: right .35s ease;
            box-shadow: -10px 0 40px rgba(0, 0, 0, .15);
            padding: 24px;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, .5);
            z-index: 199;
        }
        .drawer-overlay.show {
            display: block;
        }
        .drawer-close {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 12px;
            font-size: 16px;
            cursor: pointer;
            float: right;
        }
        .drawer-nav {
            clear: both;
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 36px;
        }
        .drawer-nav .nav-item {
            font-size: 18px;
            padding: 16px;
        }
        .drawer-login {
            margin-top: 24px;
            padding: 14px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            text-align: center;
        }
        /* Breadcrumb */
        .breadcrumb-bar {
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-sub);
        }
        .breadcrumb-bar a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb-bar a:hover {
            text-decoration: underline;
        }
        .breadcrumb-bar .sep {
            margin: 0 8px;
            color: var(--border);
        }
        /* Article Layout */
        .article-wrap {
            max-width: 780px;
            margin: 0 auto;
            padding: 48px 24px;
        }
        .article-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .article-header .cat-label {
            display: inline-block;
            background: var(--primary-pale);
            color: var(--primary-dark);
            border-radius: var(--radius-badge);
            padding: 4px 16px;
            font-size: 13px;
            font-weight: 600;
        }
        .article-header h1 {
            font-size: 36px;
            line-height: 1.35;
            font-weight: 700;
            margin: 16px 0;
        }
        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            color: var(--text-sub);
            font-size: 14px;
            flex-wrap: wrap;
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--accent);
        }
        .article-body {
            font-size: 17px;
            line-height: 2;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 1.5em;
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 48px 0 16px;
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 21px;
            font-weight: 600;
            margin: 36px 0 12px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-pale);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 0 8px 8px 0;
            color: var(--text);
            font-style: normal;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5em;
            padding-left: 24px;
        }
        .article-body ul li::marker {
            color: var(--accent);
        }
        .article-body ol li::marker {
            color: var(--accent);
            font-weight: 600;
        }
        .article-body img {
            border-radius: 12px;
            margin: 24px 0;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin: 36px 0;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 13px;
            color: var(--text-sub);
        }
        /* Post navigation */
        .post-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 32px 0;
        }
        .post-nav .nav-link {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            transition: all .25s ease;
            text-decoration: none;
            color: var(--text);
            display: block;
        }
        .post-nav .nav-link:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .post-nav .nav-label {
            font-size: 13px;
            color: var(--text-sub);
            display: block;
            margin-bottom: 4px;
        }
        .post-nav .nav-title {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
        }
        /* Related Cards */
        .related-section {
            margin-top: 48px;
        }
        .section-heading {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 24px;
        }
        .section-heading .bar {
            width: 4px;
            height: 20px;
            background: var(--accent);
            border-radius: 2px;
        }
        .section-heading h2 {
            font-size: 22px;
            font-weight: 700;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .3s ease;
            text-decoration: none;
            color: var(--text);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            text-decoration: none;
            color: var(--text);
        }
        .related-card .thumb {
            height: 140px;
            background: var(--primary-pale);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .related-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .related-card .related-body {
            padding: 16px 18px;
        }
        .related-card .related-title {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .related-card .related-meta {
            font-size: 13px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        /* CTA */
        .cta-band {
            background: var(--bg-dark);
            padding: 48px 24px;
            text-align: center;
        }
        .cta-band h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-band p {
            color: rgba(255, 255, 255, .75);
            margin-bottom: 24px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-band .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1C1F1E;
            border: none;
            border-radius: var(--radius-btn);
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all .25s ease;
            text-decoration: none;
        }
        .cta-band .btn:hover {
            background: #c08a1e;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(217, 158, 43, .3);
            color: #1C1F1E;
            text-decoration: none;
        }
        .cta-band .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, .4);
            color: #fff;
            background: transparent;
            border-radius: var(--radius-btn);
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all .25s ease;
            margin-left: 12px;
            text-decoration: none;
        }
        .cta-band .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            text-decoration: none;
        }
        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .85);
            padding-top: 56px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }
        .site-footer h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .site-footer p {
            font-size: 14px;
            line-height: 1.6;
            color: rgba(255, 255, 255, .65);
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
            text-decoration: none;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact p {
            margin-bottom: 8px;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
        }
        /* Not Found */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
        }
        .not-found-box .nf-icon {
            font-size: 56px;
            color: var(--border);
            margin-bottom: 16px;
        }
        .not-found-box h2 {
            font-size: 24px;
            color: var(--text);
            margin-bottom: 8px;
        }
        .not-found-box p {
            color: var(--text-sub);
            margin-bottom: 20px;
        }
        /* Floating CTA */
        .floating-cta {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 50;
        }
        .float-main {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            border: none;
            box-shadow: 0 4px 16px rgba(30, 122, 70, .4);
            font-size: 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .3s ease;
        }
        .float-main:hover {
            background: var(--primary-dark);
            transform: scale(1.06);
        }
        /* Responsive */
        @media (max-width: 1023px) {
            .sidebar {
                display: none;
            }
            .main-area {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .mobile-drawer {
                display: block;
            }
            .drawer-overlay {
                display: block;
            }
            .breadcrumb-bar {
                padding: 14px 16px;
            }
            .article-wrap {
                padding: 32px 20px;
            }
            .article-header h1 {
                font-size: 28px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .container-custom {
                padding: 0 16px;
            }
            .article-header h1 {
                font-size: 26px;
            }
            .article-meta {
                gap: 10px;
                font-size: 13px;
            }
            .post-nav {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }
            .cta-band h2 {
                font-size: 24px;
            }
            .cta-band .btn,
            .cta-band .btn-outline {
                display: flex;
                width: 100%;
                justify-content: center;
                margin: 8px 0;
            }
        }
        @media (max-width: 520px) {
            .article-wrap {
                padding: 24px 16px;
            }
            .article-header h1 {
                font-size: 22px;
            }
            .article-body {
                font-size: 16px;
            }
            .article-body h2 {
                font-size: 21px;
            }
            .breadcrumb-bar {
                font-size: 13px;
                overflow-x: auto;
                white-space: nowrap;
            }
            .floating-cta {
                right: 16px;
                bottom: 16px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1E7A46;
            --primary-dark: #155A34;
            --primary-pale: #E8F3EE;
            --accent: #D99E2B;
            --bg: #F7F6F3;
            --bg-dark: #1C1F1E;
            --surface: #FFFFFF;
            --text: #22261F;
            --text-sub: #5A615A;
            --border: #E2DFD6;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.07);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 17px;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover {
            text-decoration: underline;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        input,
        textarea {
            font-family: inherit;
            font-size: 15px;
        }

        .site-shell {
            min-height: 100vh;
            display: flex;
        }

        /* 左侧竖向导航 */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 260px;
            height: 100vh;
            background: var(--surface);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 90;
            padding: 32px 20px 20px;
            transition: transform .3s ease;
        }

        .sidebar-brand {
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 20px;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .brand-logo span {
            color: var(--accent);
        }

        .brand-slogan {
            font-size: 12px;
            color: var(--text-sub);
            margin-top: 6px;
            letter-spacing: 1px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 14px;
            height: 44px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-left: 4px solid transparent;
            transition: background .2s ease, color .2s ease;
        }

        .nav-item svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            color: var(--text-sub);
            transition: color .2s ease;
        }

        .nav-item:hover {
            background: var(--primary-pale);
            color: var(--primary-dark);
            text-decoration: none;
        }

        .nav-item:hover svg {
            color: var(--primary);
        }

        .nav-item.active {
            background: var(--primary-pale);
            color: var(--primary-dark);
            border-left-color: var(--accent);
            font-weight: 600;
        }

        .nav-item.active svg {
            color: var(--primary);
        }

        .sidebar-auth {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }

        .auth-tip {
            font-size: 12px;
            color: var(--text-sub);
            margin-top: 10px;
            text-align: center;
        }

        .login-panel {
            display: none;
            margin-top: 14px;
            padding: 16px;
            background: var(--primary-pale);
            border-radius: var(--radius);
        }

        .login-panel.open {
            display: block;
        }

        .login-form .form-group {
            margin-bottom: 12px;
        }

        .login-form label {
            display: block;
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 6px;
            font-weight: 500;
        }

        .login-form input[type="text"],
        .login-form input[type="password"] {
            width: 100%;
            height: 40px;
            padding: 0 12px;
            border: 1px solid var(--border);
            border-radius: 8px;
            background: var(--surface);
            font-size: 14px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .login-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 122, 70, 0.15);
            outline: none;
        }

        .remember-line {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 12px;
            cursor: pointer;
        }

        .remember-line input {
            width: 16px;
            height: 16px;
            accent-color: var(--primary);
        }

        .sidebar-foot {
            font-size: 12px;
            color: var(--text-sub);
            text-align: center;
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }

        /* 移动端顶部导航 */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            z-index: 100;
        }

        .mobile-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
        }

        .mobile-brand span {
            color: var(--accent);
        }

        .menu-toggle {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            border-radius: 8px;
            background: var(--surface);
            color: var(--text);
        }

        .menu-toggle:hover {
            background: var(--primary-pale);
        }

        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(28, 31, 30, 0.45);
            z-index: 85;
        }

        .mobile-overlay.show {
            display: block;
        }

        /* 主内容区 */
        .main-area {
            margin-left: 260px;
            width: calc(100% - 260px);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 分类页 Hero */
        .category-hero {
            position: relative;
            background: linear-gradient(rgba(247, 246, 243, 0.88), rgba(247, 246, 243, 0.92)), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            padding: 100px 0 64px;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 32px;
        }

        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

        .breadcrumb a:hover {
            text-decoration: underline;
        }

        .breadcrumb .sep {
            margin: 0 8px;
            color: var(--border);
        }

        .hero-content {
            max-width: 720px;
        }

        .hero-content h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
        }

        .hero-content h1 .highlight {
            color: var(--primary);
        }

        .hero-content p {
            font-size: 18px;
            color: var(--text-sub);
            max-width: 60ch;
            margin-bottom: 28px;
        }

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

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 8px;
            border: 1px solid transparent;
            transition: background .2s ease, border-color .2s ease, color .2s ease, transform .15s ease, box-shadow .2s ease;
            text-decoration: none;
        }

        .btn:hover {
            text-decoration: none;
        }

        .btn:active {
            transform: translateY(1px);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-outline {
            background: var(--surface);
            border-color: var(--border);
            color: var(--text);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--surface);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: #c88e1f;
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }

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

        .btn-lg {
            height: 52px;
            padding: 0 36px;
            font-size: 16px;
        }

        .btn-block {
            width: 100%;
        }

        /* 区块 */
        .section-block {
            padding: 80px 0;
        }

        .section-block-alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            margin-bottom: 32px;
        }

        .section-title-block {
            display: flex;
            align-items: center;
            gap: 12px;
            position: relative;
            padding-left: 18px;
        }

        .section-title-block::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 26px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-sub);
            margin-top: 8px;
        }

        .section-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            padding: 6px 0;
        }

        .section-link:hover {
            text-decoration: underline;
        }

        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

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

        .card-cover {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--primary-pale);
            position: relative;
        }

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

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

        .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-pale);
            color: var(--primary-dark);
            width: fit-content;
        }

        .card-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text);
        }

        .card-desc {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
            flex: 1;
        }

        .card-meta {
            font-size: 13px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        .card-meta a {
            font-weight: 600;
        }

        /* 通栏 CTA 条 */
        .cta-banner {
            grid-column: 1 / -1;
            background: var(--bg-dark);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .cta-banner h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .cta-banner p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* 特色卡 */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
        }

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

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-pale);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .feature-icon svg {
            width: 22px;
            height: 22px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* 流程 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .step-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            position: relative;
        }

        .step-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .step-num::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border);
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 860px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 0 24px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

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

        .faq-item[open] {
            box-shadow: var(--shadow);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            user-select: none;
        }

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

        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            color: var(--primary);
            transition: transform .25s ease, background .2s ease;
            flex-shrink: 0;
        }

        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
            background: var(--primary-pale);
        }

        .faq-content {
            padding: 0 0 20px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* 最终 CTA */
        .final-cta {
            background: linear-gradient(rgba(28, 31, 30, 0.82), rgba(28, 31, 30, 0.88)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            padding: 96px 0;
            color: #fff;
            text-align: center;
        }

        .final-cta h2 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .final-cta p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
        }

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

        /* 页脚 */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 64px;
        }

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

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
            line-height: 1.8;
        }

        .footer-links h4,
        .footer-contact h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 15px;
            margin-bottom: 10px;
            transition: color .2s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .footer-contact p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.45);
            text-align: center;
        }

        /* 响应式 */
        @media (max-width: 1023px) {
            .sidebar {
                left: auto;
                right: 0;
                transform: translateX(100%);
                width: 300px;
                box-shadow: -12px 0 32px rgba(0, 0, 0, 0.12);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .mobile-header {
                display: flex;
            }

            .main-area {
                margin-left: 0;
                width: 100%;
                padding-top: 64px;
            }

            .category-hero {
                padding: 72px 0 48px;
            }

            .hero-content h1 {
                font-size: 32px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .section-block {
                padding: 56px 0;
            }

            .final-cta {
                padding: 64px 0;
            }

            .final-cta h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .card-grid,
            .feature-grid,
            .steps-grid {
                grid-template-columns: 1fr;
            }

            .hero-content h1 {
                font-size: 28px;
            }

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

            .cta-banner {
                padding: 24px 20px;
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-banner .btn {
                width: 100%;
            }

            .section-title {
                font-size: 24px;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .breadcrumb {
                font-size: 13px;
                margin-bottom: 24px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1E7A46;
            --primary-dark: #155A34;
            --primary-pale: #E8F3EE;
            --accent: #D99E2B;
            --bg: #F7F6F3;
            --bg-dark: #1C1F1E;
            --surface: #FFFFFF;
            --text: #22261F;
            --text-sub: #5A615A;
            --border: #E2DFD6;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.07);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* 侧边栏 */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 260px;
            height: 100vh;
            background: var(--surface);
            border-right: 1px solid var(--border);
            z-index: 50;
            display: none;
            flex-direction: column;
            padding: 32px 20px 24px;
        }
        .sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .sidebar-brand {
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 20px;
        }
        .brand-name {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: 0.5px;
        }
        .brand-name .brand-accent {
            color: var(--accent);
        }
        .brand-sub {
            display: block;
            font-size: 12px;
            color: var(--text-sub);
            margin-top: 4px;
            letter-spacing: 1px;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 2px;
            flex: 1;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 15px;
            color: var(--text);
            transition: background 0.2s, color 0.2s;
            position: relative;
            line-height: 1.4;
        }
        .nav-item svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
        }
        .nav-item:hover {
            background: var(--primary-pale);
            color: var(--primary);
        }
        .nav-item.active {
            background: var(--primary-pale);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-item.active::before {
            content: '';
            position: absolute;
            left: -20px;
            top: 8px;
            bottom: 8px;
            width: 4px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
        }
        .sidebar-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
        }
        .btn-login-sidebar {
            display: block;
            width: 100%;
            background: var(--primary);
            color: #fff;
            text-align: center;
            padding: 12px 0;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            transition: background 0.2s, transform 0.2s;
        }
        .btn-login-sidebar:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        .sidebar-copy {
            font-size: 12px;
            color: var(--text-sub);
            text-align: center;
            margin-top: 16px;
        }
        /* 主内容区 */
        .main-wrap {
            width: 100%;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        /* 移动端顶栏 */
        .mobile-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .mobile-brand {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
        }
        .mobile-brand span {
            color: var(--accent);
        }
        .mobile-menu-btn {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text);
        }
        .mobile-menu-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        /* 移动端抽屉 */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            max-width: 320px;
            height: 100vh;
            background: var(--surface);
            z-index: 120;
            transition: right 0.3s ease;
            padding: 24px;
            display: flex;
            flex-direction: column;
            box-shadow: -8px 0 30px rgba(0, 0, 0, 0.1);
        }
        .mobile-drawer.open {
            right: 0;
        }
        .drawer-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 30px;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--border);
        }
        .drawer-close {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg);
            border-radius: 50%;
            color: var(--text);
        }
        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .drawer-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 12px;
            border-radius: var(--radius-sm);
            font-size: 17px;
            color: var(--text);
        }
        .drawer-nav a:hover {
            background: var(--primary-pale);
            color: var(--primary);
        }
        .drawer-nav a.active {
            background: var(--primary-pale);
            color: var(--primary);
            font-weight: 600;
        }
        .drawer-login {
            padding-top: 18px;
            border-top: 1px solid var(--border);
        }
        .drawer-mask {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.45);
            z-index: 110;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, visibility 0.3s;
        }
        .drawer-mask.open {
            opacity: 1;
            visibility: visible;
        }
        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-sub);
            padding: 16px 0;
            flex-wrap: wrap;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }
        /* Hero */
        .cat-hero {
            position: relative;
            min-height: 240px;
            display: flex;
            align-items: center;
            border-radius: 16px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 48px 40px;
            margin-bottom: 64px;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(247, 246, 243, 0.88);
        }
        .cat-hero-content {
            position: relative;
            z-index: 1;
            max-width: 680px;
        }
        .cat-hero h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
        }
        .cat-hero p {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 58ch;
            margin-bottom: 24px;
            line-height: 1.8;
        }
        /* 区块 */
        .section {
            padding: 56px 0;
        }
        .section-title-wrap {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 32px;
        }
        .section-title-bar {
            width: 4px;
            height: 24px;
            background: var(--accent);
            border-radius: 4px;
            flex-shrink: 0;
        }
        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
        }
        .section-link {
            margin-left: auto;
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .section-link:hover {
            text-decoration: underline;
        }
        /* 卡片 */
        .card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
            transform: translateY(-3px);
        }
        .card-img {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--primary-pale);
            position: relative;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .card-body {
            padding: 20px;
        }
        .card-tag {
            display: inline-block;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 999px;
            background: var(--primary-pale);
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 10px;
        }
        .card-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--text);
            margin-bottom: 8px;
        }
        .card-summary {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-sub);
        }
        .card-link {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            margin-left: auto;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .card-link:hover {
            text-decoration: underline;
        }
        /* 卖点卡片 */
        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
            transform: translateY(-3px);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--primary-pale);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .feature-icon svg {
            width: 24px;
            height: 24px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .feature-card .more {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
        }
        .feature-card .more:hover {
            text-decoration: underline;
        }
        /* 步骤流程 */
        .step-item {
            display: flex;
            gap: 18px;
            position: relative;
            padding-bottom: 32px;
        }
        .step-item:last-child {
            padding-bottom: 0;
        }
        .step-item::before {
            content: '';
            position: absolute;
            left: 23px;
            top: 48px;
            bottom: 0;
            width: 2px;
            background: var(--border);
        }
        .step-item:last-child::before {
            display: none;
        }
        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
            position: relative;
            z-index: 1;
            box-shadow: 0 0 0 4px var(--primary-pale);
        }
        .step-content {
            padding-top: 4px;
        }
        .step-content h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .step-content p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }
        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
            min-height: 44px;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(30, 122, 70, 0.25);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--surface);
            color: var(--text);
            border: 1px solid var(--border);
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            transition: border-color 0.2s, color 0.2s, transform 0.2s;
            min-height: 44px;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--text);
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            transition: transform 0.2s, box-shadow 0.2s;
            min-height: 44px;
        }
        .btn-white:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
        }
        /* 通栏 CTA 条 */
        .cta-strip {
            background: var(--bg-dark);
            border-radius: var(--radius);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 32px;
        }
        .cta-strip h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 600;
        }
        .cta-strip p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin-top: 4px;
        }
        /* 统计区 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
        }
        .stat-num {
            font-size: 40px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-sub);
            margin-top: 6px;
        }
        /* FAQ */
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.2s;
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-item.open {
            border-color: var(--primary);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            gap: 16px;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1.5px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-sub);
            flex-shrink: 0;
            transition: transform 0.3s, border-color 0.3s, color 0.3s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            border-color: var(--primary);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.8;
        }
        /* 最终 CTA */
        .final-cta {
            background: var(--bg-dark);
            border-radius: 16px;
            padding: 64px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            margin-bottom: 64px;
        }
        .final-cta h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .final-cta p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            margin-bottom: 32px;
            max-width: 52ch;
            margin-left: auto;
            margin-right: auto;
        }
        .final-cta .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* 页脚 */
        .site-footer {
            background: var(--bg-dark);
            color: #fff;
            padding: 56px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            padding-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-links h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            color: #fff;
        }
        .footer-links a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            padding: 4px 0;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            color: #fff;
        }
        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            padding: 4px 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        /* 浮动 CTA */
        .float-cta {
            position: fixed;
            bottom: 28px;
            right: 28px;
            z-index: 90;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 12px;
        }
        .float-cta-main {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 6px 20px rgba(30, 122, 70, 0.35);
            transition: background 0.2s, transform 0.2s;
        }
        .float-cta-main:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }
        .float-cta-options {
            display: flex;
            flex-direction: column;
            gap: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
        }
        .float-cta-options.open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .float-cta-options a {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 20px;
            font-size: 14px;
            color: var(--text);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            white-space: nowrap;
            transition: border-color 0.2s, color 0.2s;
        }
        .float-cta-options a:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        /* 响应式 */
        @media (min-width: 1024px) {
            .sidebar {
                display: flex;
            }
            .mobile-header {
                display: none;
            }
            .main-wrap {
                margin-left: 260px;
            }
            .section {
                padding: 72px 0;
            }
            .cat-hero {
                min-height: 260px;
                padding: 56px 48px;
            }
            .cat-hero h1 {
                font-size: 36px;
            }
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .cat-hero {
                padding: 36px 24px;
                min-height: 220px;
            }
            .cat-hero h1 {
                font-size: 26px;
            }
            .cat-hero p {
                font-size: 15px;
            }
            .cta-strip {
                padding: 28px 24px;
            }
            .final-cta {
                padding: 48px 24px;
            }
            .final-cta h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .card-body {
                padding: 16px;
            }
            .feature-card {
                padding: 22px 18px;
            }
            .section-title {
                font-size: 20px;
            }
            .stat-num {
                font-size: 32px;
            }
            .float-cta {
                bottom: 20px;
                right: 20px;
            }
        }