/* roulang page: index */
:root {
            --primary: #1B6FBF;
            --primary-dark: #155FA6;
            --primary-light: #E7F1F9;
            --primary-transparent: rgba(27, 111, 191, 0.08);
            --accent: #F97316;
            --accent-dark: #EA580C;
            --accent-light: #FEF0E7;
            --bg: #F5F8FC;
            --card-bg: #FFFFFF;
            --text-title: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: #E2E8F0;
            --radius-card: 12px;
            --radius-large: 16px;
            --radius-btn: 8px;
            --shadow-card: 0 8px 30px rgba(2, 44, 102, 0.08);
            --shadow-hover: 0 16px 40px rgba(2, 44, 102, 0.14);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
            --font-num: "Inter", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 2.5rem;
            }
        }
        .section {
            padding: 4rem 0;
        }
        @media (min-width: 1024px) {
            .section {
                padding: 5rem 0;
            }
        }
        .section-head {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: -0.01em;
        }
        .section-head p {
            margin-top: 0.5rem;
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .section-head h2 {
                font-size: 1.6rem;
            }
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(27, 111, 191, 0.3);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: var(--primary-transparent);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            line-height: 1.4;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.4;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(27, 111, 191, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(27, 111, 191, 0.3);
            color: #fff;
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(27, 111, 191, 0.2);
        }
        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-secondary:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(27, 111, 191, 0.15);
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 13px;
            border-radius: 6px;
            height: 32px;
            display: inline-flex;
            align-items: center;
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 0.875rem;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .text-link:hover {
            color: var(--primary-dark);
        }
        .text-link:hover i {
            transform: translateX(4px);
        }
        .text-link i {
            transition: transform 0.2s ease;
        }
        /* ===== 侧边导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 256px;
            height: 100vh;
            background: #fff;
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 40;
        }
        .sidebar-brand {
            height: 64px;
            display: flex;
            align-items: center;
            padding: 0 24px;
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
        }
        .brand-logo {
            font-weight: 700;
            font-size: 20px;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.01em;
        }
        .brand-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 3px;
            background: var(--accent);
            display: inline-block;
            flex-shrink: 0;
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            height: 44px;
            padding: 0 16px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: all 0.2s ease;
            position: relative;
            background: transparent;
        }
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            color: var(--text-muted);
            transition: color 0.2s ease;
        }
        .nav-item:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .nav-item:hover i {
            color: var(--primary);
        }
        .nav-item.active {
            background: var(--primary-transparent);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-item.active::before {
            content: "";
            position: absolute;
            left: -12px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 20px;
            border-radius: 0 4px 4px 0;
            background: var(--primary);
        }
        .nav-item.active i {
            color: var(--primary);
        }
        .sidebar-cta {
            margin: 16px;
            padding: 16px;
            background: var(--primary-light);
            border-radius: 12px;
            text-align: center;
        }
        .sidebar-cta p {
            font-size: 13px;
            color: var(--text-body);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .sidebar-cta .btn-sm {
            background: var(--primary);
            color: #fff;
        }
        .sidebar-cta .btn-sm:hover {
            background: var(--primary-dark);
        }
        /* ===== 移动端导航 ===== */
        .mobile-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            z-index: 50;
        }
        .mobile-header .brand-logo {
            font-size: 18px;
        }
        .hamburger-btn {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-title);
            transition: background 0.2s ease;
        }
        .hamburger-btn:hover {
            background: var(--primary-light);
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: -300px;
            width: 280px;
            height: 100vh;
            background: #fff;
            z-index: 70;
            transition: left 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open {
            left: 0;
        }
        .drawer-header {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            border-bottom: 1px solid var(--border);
        }
        .drawer-close {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-size: 16px;
            color: var(--text-muted);
            transition: background 0.2s ease;
        }
        .drawer-close:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .drawer-nav {
            padding: 16px 12px;
            flex: 1;
        }
        .drawer-nav .nav-item::before {
            left: -12px;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.45);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease;
            z-index: 60;
        }
        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            overflow: hidden;
            background-size: cover;
            background-position: center;
            min-height: 640px;
            display: flex;
            align-items: center;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, #ffffff 0%, rgba(255, 255, 255, 0.92) 50%, rgba(255, 255, 255, 0.3) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
            min-height: 640px;
            padding: 80px 0;
        }
        @media (min-width: 1024px) {
            .hero-content {
                grid-template-columns: 1.1fr 0.9fr;
                gap: 60px;
            }
        }
        .hero h1 {
            font-size: 2.1rem;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }
        @media (min-width: 768px) {
            .hero h1 {
                font-size: 2.8rem;
            }
        }
        @media (min-width: 1280px) {
            .hero h1 {
                font-size: 3rem;
            }
        }
        .hero h1 .brand-highlight {
            color: var(--primary);
        }
        .hero-sub {
            font-size: 0.95rem;
            color: var(--text-muted);
            max-width: 480px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        @media (min-width: 768px) {
            .hero-sub {
                font-size: 1.05rem;
            }
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-image {
            position: relative;
        }
        .hero-image img {
            border-radius: var(--radius-large);
            box-shadow: 0 20px 50px rgba(2, 44, 102, 0.2);
            object-fit: cover;
            width: 100%;
            aspect-ratio: 4/3;
        }
        .hero-image::after {
            content: "";
            position: absolute;
            right: -16px;
            bottom: -16px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            border: 6px solid rgba(249, 115, 22, 0.3);
            z-index: -1;
        }
        @media (max-width: 768px) {
            .hero {
                min-height: auto;
            }
            .hero-content {
                min-height: auto;
                padding: 120px 0 60px;
                grid-template-columns: 1fr;
            }
            .hero-image {
                order: -1;
            }
            .hero-image::after {
                width: 80px;
                height: 80px;
                right: -8px;
                bottom: -8px;
            }
            .hero-buttons .btn {
                width: 100%;
            }
        }
        /* ===== 痛点标签行 ===== */
        .pain-points {
            border-top: 1px solid rgba(226, 232, 240, 0.6);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            background: #fff;
            padding: 20px 0;
        }
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
        }
        @media (min-width: 768px) {
            .pain-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .pain-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            background: #F8FAFC;
            border-radius: 12px;
            border: 1px solid rgba(226, 232, 240, 0.7);
            transition: box-shadow 0.2s ease;
        }
        .pain-item:hover {
            box-shadow: var(--shadow-card);
        }
        .pain-item i {
            font-size: 20px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .pain-item span {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-title);
        }
        .pain-item small {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: block;
            line-height: 1.4;
        }
        /* ===== 解决方案区 ===== */
        .solutions {
            background: var(--bg);
        }
        .solution-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width: 1024px) {
            .solution-grid {
                grid-template-columns: 3fr 2fr;
            }
        }
        .solution-main {
            padding: 0;
            overflow: hidden;
        }
        .solution-main img {
            width: 100%;
            aspect-ratio: 16/7;
            object-fit: cover;
        }
        .solution-main-content {
            padding: 28px;
        }
        .solution-main-content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 12px;
        }
        .solution-main-content p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .solution-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .solution-list li {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 999px;
        }
        .solution-right {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .solution-small {
            padding: 28px;
            flex: 1;
        }
        .solution-small h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 12px;
        }
        .solution-small ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .solution-small ul li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-body);
        }
        .solution-small ul li i {
            color: var(--accent);
            font-size: 14px;
        }
        /* ===== 数据 ===== */
        .stats {
            background: var(--primary-light);
            padding: 3rem 0;
        }
        @media (min-width: 768px) {
            .stats {
                padding: 4rem 0;
            }
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        @media (min-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .stat-item {
            text-align: center;
            padding: 16px;
        }
        .stat-number {
            font-family: var(--font-num);
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        @media (min-width: 1024px) {
            .stat-number {
                font-size: 3.2rem;
            }
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-body);
            margin-top: 4px;
        }
        .stats-note {
            text-align: center;
            margin-top: 24px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        /* ===== 用户评价 ===== */
        .testimonials {
            background: #fff;
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width: 768px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .testimonial-card {
            padding: 28px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .testimonial-card .stars {
            color: #FBBF24;
            font-size: 14px;
        }
        .testimonial-card blockquote {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.8;
            font-style: normal;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid rgba(226, 232, 240, 0.6);
            padding-top: 16px;
        }
        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 16px;
            flex-shrink: 0;
        }
        .testimonial-author .author-name {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-title);
        }
        .testimonial-author .author-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(2, 44, 102, 0.04);
            transition: box-shadow 0.3s ease;
        }
        .faq-item.open {
            box-shadow: var(--shadow-card);
            border-color: rgba(27, 111, 191, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            cursor: pointer;
            width: 100%;
            text-align: left;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid rgba(226, 232, 240, 0.4);
            padding-top: 14px;
        }
        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            padding: 4rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(249, 115, 22, 0.1);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 0.95rem;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 20px rgba(249, 115, 22, 0.3);
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
        }
        /* ===== 最新动态 ===== */
        .latest-news {
            background: var(--bg);
            padding: 4rem 0;
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width: 768px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .news-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(2, 44, 102, 0.06);
            transition: all 0.3s ease;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .news-card a {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .news-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--primary-light);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.05);
        }
        .news-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .news-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-summary {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(226, 232, 240, 0.5);
            padding-top: 12px;
            margin-top: 4px;
        }
        .news-footer .news-date {
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-footer .read-more {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-card:hover .read-more i {
            transform: translateX(3px);
        }
        .read-more i {
            transition: transform 0.2s ease;
        }
        .empty-state {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 60px 20px;
            grid-column: 1 / -1;
            background: #fff;
            border-radius: 12px;
            border: 1px dashed var(--border);
        }
        .empty-state i {
            font-size: 36px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .empty-state p {
            font-size: 14px;
            color: var(--text-muted);
        }
        /* ===== 页脚 ===== */
        .footer {
            background: #F8FAFC;
            border-top: 1px solid var(--border);
            padding: 3.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 40px;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.5fr;
            }
        }
        .footer-brand h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h5 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 16px;
            text-transform: none;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color 0.2s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-contact-list li i {
            width: 18px;
            text-align: center;
            color: var(--primary);
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom .copyright {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .footer-bottom .copyright a {
            color: var(--primary);
        }
        /* ===== 隐藏桌面导航的断点 ===== */
        @media (max-width: 1023px) {
            .sidebar {
                display: none;
            }
            body {
                padding-top: 64px;
            }
        }
        @media (min-width: 1024px) {
            .mobile-header {
                display: none;
            }
            .main-wrapper {
                padding-left: 256px;
            }
        }
        /* ===== 通用辅助 ===== */
        .grain-text {
            letter-spacing: -0.02em;
        }
        .shadow-soft {
            box-shadow: 0 2px 12px rgba(2, 44, 102, 0.06);
        }

/* roulang page: article */
:root {
            --primary: #1B6FBF;
            --primary-dark: #155FA6;
            --primary-light: #E7F1F9;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --accent-light: #FEF0E7;
            --ink: #0F172A;
            --body: #334155;
            --muted: #64748B;
            --line: #E2E8F0;
            --bgsoft: #F5F8FC;
            --card-radius: 12px;
            --card-shadow: 0 8px 30px rgba(2, 44, 102, 0.08);
            --card-shadow-hover: 0 16px 40px rgba(2, 44, 102, 0.14);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--body);
            background: var(--bgsoft);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

        /* ---------- Sidebar ---------- */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 16rem;
            height: 100vh;
            background: #fff;
            border-right: 1px solid var(--line);
            display: flex;
            flex-direction: column;
            z-index: 50;
            padding: 0 1.25rem;
        }

        .sidebar-brand {
            height: 4rem;
            display: flex;
            align-items: center;
            gap: .5rem;
            padding: 0 .25rem;
            border-bottom: 1px solid var(--line);
            margin-bottom: 1.5rem;
        }

        .sidebar-brand .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .logo-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 2px;
            background: var(--accent);
            margin-right: 6px;
            flex-shrink: 0;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: .25rem;
            flex: 1;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: .625rem;
            height: 2.5rem;
            padding: 0 1rem;
            border-radius: .5rem;
            font-size: .875rem;
            font-weight: 500;
            color: var(--body);
            transition: background .2s, color .2s;
            position: relative;
        }

        .sidebar-nav .nav-item i {
            width: 1rem;
            text-align: center;
            color: var(--muted);
            transition: color .2s;
            font-size: .875rem;
        }

        .sidebar-nav .nav-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

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

        .sidebar-nav .nav-item.active {
            background: rgba(27, 111, 191, 0.08);
            color: var(--primary);
            font-weight: 600;
        }

        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 1.25rem;
            border-radius: 3px;
            background: var(--primary);
        }

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

        .sidebar-foot {
            padding: 1rem 0 1.5rem;
        }

        .sidebar-foot .mini-card {
            background: var(--bgsoft);
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 1rem;
            text-align: center;
        }

        .sidebar-foot .mini-card p {
            font-size: .75rem;
            color: var(--muted);
            line-height: 1.5;
            margin-bottom: .625rem;
        }

        .btn-mini {
            display: inline-block;
            height: 2rem;
            padding: 0 1rem;
            background: var(--primary);
            color: #fff;
            font-size: .75rem;
            font-weight: 500;
            border-radius: .5rem;
            line-height: 2rem;
            transition: all .2s;
        }

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

        /* ---------- Main ---------- */
        .main-wrap {
            margin-left: 16rem;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ---------- Article ---------- */
        .article-page {
            flex: 1;
            padding: 2.5rem 0 4rem;
        }

        .breadcrumb {
            font-size: .8125rem;
            color: var(--muted);
            margin-bottom: 2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: .375rem;
        }

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

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

        .breadcrumb .sep {
            color: #94A3B8;
            margin: 0 .25rem;
        }

        .article-header {
            margin-bottom: 2.5rem;
        }

        .article-header h1 {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
            letter-spacing: .5px;
            margin-bottom: 1rem;
            max-width: 900px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            font-size: .8125rem;
            color: var(--muted);
            border-bottom: 1px solid var(--line);
            padding-bottom: 1.25rem;
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: .375rem;
        }

        .article-meta .meta-item i {
            color: var(--primary);
            font-size: .8125rem;
        }

        .article-body {
            max-width: 48rem;
        }

        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--body);
        }

        .article-content p {
            margin-bottom: 1.5rem;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--ink);
            margin: 2.5rem 0 1rem;
            padding-bottom: .5rem;
            border-bottom: 1px solid var(--line);
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--ink);
            margin: 1.75rem 0 .75rem;
        }

        .article-content blockquote {
            border-left: 3px solid var(--primary);
            background: var(--primary-light);
            border-radius: 0 .5rem .5rem 0;
            padding: 1rem 1.25rem;
            margin: 1.5rem 0;
            color: var(--body);
            font-size: .9375rem;
        }

        .article-content img {
            border-radius: 12px;
            margin: 1.5rem 0;
        }

        .article-content figcaption,
        .article-content .img-caption {
            font-size: .8125rem;
            color: var(--muted);
            text-align: center;
            margin: -1rem 0 1.5rem;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: .875rem;
        }

        .article-content table th {
            background: var(--primary-light);
            font-weight: 600;
            color: var(--ink);
            text-align: left;
            padding: .75rem 1rem;
            border: 1px solid var(--line);
        }

        .article-content table td {
            padding: .75rem 1rem;
            border: 1px solid var(--line);
        }

        .article-content ul {
            margin: 1rem 0 1.5rem 1.25rem;
            list-style: disc;
        }

        .article-content ol {
            margin: 1rem 0 1.5rem 1.25rem;
            list-style: decimal;
        }

        .article-content li {
            margin-bottom: .35rem;
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(27, 111, 191, 0.3);
        }

        .article-content a:hover {
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        /* ---------- Tags / Share ---------- */
        .article-tools {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            margin: 2.5rem 0 3rem;
            padding: 1.25rem 0;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: .5rem;
        }

        .tag-pill {
            display: inline-block;
            padding: .25rem .75rem;
            background: var(--primary-light);
            color: var(--primary);
            font-size: .75rem;
            border-radius: 8px;
            font-weight: 500;
        }

        .share-links {
            display: flex;
            align-items: center;
            gap: .5rem;
        }

        .share-links span {
            font-size: .8125rem;
            color: var(--muted);
            margin-right: .25rem;
        }

        .share-btn {
            width: 2rem;
            height: 2rem;
            border-radius: .5rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--bgsoft);
            border: 1px solid var(--line);
            color: var(--muted);
            font-size: .8125rem;
            transition: all .2s;
        }

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

        /* ---------- Related ---------- */
        .related-section {
            margin-bottom: 3rem;
        }

        .related-section .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1.5rem;
        }

        .related-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--ink);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .related-card {
            background: #fff;
            border: 1px solid #F1F5F9;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all .3s ease;
        }

        .related-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(27, 111, 191, 0.3);
        }

        .related-card .thumb {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .related-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .related-card:hover .thumb img {
            transform: scale(1.05);
        }

        .related-card .rc-body {
            padding: 1rem 1.25rem 1.25rem;
        }

        .related-card .rc-title {
            font-size: .9375rem;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.5;
            margin-bottom: .5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .rc-title:hover {
            color: var(--primary);
        }

        .related-card .rc-meta {
            font-size: .75rem;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: .375rem;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            color: var(--primary);
            font-weight: 500;
            font-size: .875rem;
            transition: all .2s;
        }

        .back-link:hover {
            color: var(--primary-dark);
            gap: .75rem;
        }

        /* ---------- Footer ---------- */
        .footer {
            background: #F8FAFC;
            border-top: 1px solid var(--line);
            padding: 3.5rem 0 0;
            flex-shrink: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid var(--line);
        }

        .footer-brand h4 {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: .75rem;
        }

        .footer-brand p {
            font-size: .8125rem;
            color: var(--muted);
            line-height: 1.7;
        }

        .footer-col h5 {
            font-size: .875rem;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 1rem;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: .5rem;
        }

        .footer-col ul li a {
            font-size: .8125rem;
            color: var(--muted);
            transition: color .2s;
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-contact-list li {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .8125rem;
            color: var(--muted);
        }

        .footer-contact-list li i {
            color: var(--primary);
            width: 1rem;
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: .5rem;
            padding: 1.5rem 0;
            font-size: .75rem;
            color: var(--muted);
        }

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

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

        /* ---------- Mobile nav ---------- */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 60;
            height: 4rem;
            background: #fff;
            border-bottom: 1px solid var(--line);
            align-items: center;
            justify-content: space-between;
            padding: 0 1.25rem;
        }

        .mobile-header .m-logo {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
        }

        .hamburger {
            width: 2.5rem;
            height: 2.5rem;
            border-radius: .5rem;
            background: transparent;
            border: 1px solid var(--line);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--ink);
            font-size: 1rem;
            transition: background .2s;
        }

        .hamburger:hover {
            background: var(--primary-light);
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 65;
            background: rgba(15, 23, 42, 0.5);
        }

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

        .drawer {
            position: fixed;
            top: 0;
            left: 0;
            z-index: 70;
            width: 16rem;
            height: 100vh;
            background: #fff;
            border-right: 1px solid var(--line);
            padding: 1.25rem;
            transform: translateX(-100%);
            transition: transform .3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .drawer-brand {
            height: 4rem;
            display: flex;
            align-items: center;
            gap: .5rem;
            border-bottom: 1px solid var(--line);
            margin-bottom: 1.25rem;
        }

        .drawer-brand .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
        }

        .drawer-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            width: 2rem;
            height: 2rem;
            border-radius: .5rem;
            border: 1px solid var(--line);
            background: transparent;
            color: var(--muted);
            font-size: .8125rem;
        }

        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: .25rem;
            flex: 1;
        }

        .drawer-nav .nav-item {
            display: flex;
            align-items: center;
            gap: .625rem;
            height: 2.5rem;
            padding: 0 1rem;
            border-radius: .5rem;
            font-size: .875rem;
            font-weight: 500;
            color: var(--body);
            transition: background .2s, color .2s;
        }

        .drawer-nav .nav-item i {
            color: var(--muted);
            width: 1rem;
            text-align: center;
        }

        .drawer-nav .nav-item:hover,
        .drawer-nav .nav-item.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .drawer-nav .nav-item.active {
            font-weight: 600;
        }

        .drawer-foot {
            padding: 1rem 0 .5rem;
        }

        /* ---------- Responsive ---------- */
        @media (min-width: 768px) and (max-width: 1023px) {
            .sidebar {
                width: 5rem;
                padding: 0 1rem;
            }

            .sidebar-brand .logo-text {
                display: none;
            }

            .sidebar-brand .logo-dot {
                margin: 0 auto;
                width: 10px;
                height: 10px;
            }

            .sidebar-nav .nav-item {
                justify-content: center;
                padding: 0;
            }

            .sidebar-nav .nav-item span {
                display: none;
            }

            .sidebar-nav .nav-item i {
                font-size: 1rem;
            }

            .sidebar-foot {
                display: none;
            }

            .main-wrap {
                margin-left: 5rem;
            }

            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            .sidebar {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .main-wrap {
                margin-left: 0;
            }

            .container {
                padding: 0 1rem;
            }

            .article-page {
                padding: 1.5rem 0 3rem;
            }

            .article-header h1 {
                font-size: 1.5rem;
                line-height: 1.4;
            }

            .article-content {
                font-size: 1rem;
            }

            .article-content h2 {
                font-size: 1.25rem;
            }

            .article-content h3 {
                font-size: 1.125rem;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .article-tools {
                flex-direction: column;
                align-items: flex-start;
            }

            .breadcrumb {
                font-size: .75rem;
            }

            .article-meta {
                gap: .75rem;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.75rem;
            }

            .footer-under {
                flex-direction: column;
            }

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: .5rem;
            }
        }

        /* ---------- Accessibility ---------- */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: .25rem;
        }

/* roulang page: category1 */
:root {
        --primary: #1B6FBF;
        --primary-dark: #155FA6;
        --primary-bg: #E7F1F9;
        --primary-10: rgba(27, 111, 191, .08);
        --accent: #F97316;
        --accent-hover: #EA580C;
        --accent-bg: #FEF0E7;
        --page-bg: #F5F8FC;
        --card: #FFFFFF;
        --heading: #0F172A;
        --body: #334155;
        --muted: #64748B;
        --border: #E2E8F0;
        --radius: 12px;
        --shadow: 0 8px 30px rgba(2, 44, 102, .08);
        --shadow-hover: 0 16px 40px rgba(2, 44, 102, .14);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
        background: var(--page-bg);
        color: var(--body);
        line-height: 1.7;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }

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

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

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

    .main-content {
        margin-left: 256px;
        min-height: 100vh;
    }

    /* 侧边导航 */
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        width: 256px;
        background: #fff;
        border-right: 1px solid var(--border);
        z-index: 50;
        display: flex;
        flex-direction: column;
        transition: width .25s ease;
    }

    .sidebar-brand {
        height: 64px;
        padding: 0 24px;
        display: flex;
        align-items: center;
        border-bottom: 1px solid #F1F5F9;
    }

    .sidebar-nav {
        flex: 1;
        padding: 16px 12px;
        display: flex;
        flex-direction: column;
        gap: 4px;
        overflow-y: auto;
    }

    .nav-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 10px 16px;
        border-radius: 10px;
        font-size: 14px;
        font-weight: 500;
        color: #334155;
        transition: all .2s ease;
        position: relative;
        white-space: nowrap;
    }

    .nav-item i {
        width: 20px;
        text-align: center;
        font-size: 16px;
        flex-shrink: 0;
    }

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

    .nav-item.active {
        background: var(--primary-10);
        color: var(--primary);
        font-weight: 600;
    }

    .nav-item.active::before {
        content: "";
        position: absolute;
        left: -12px;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 20px;
        border-radius: 3px;
        background: var(--primary);
    }

    .sidebar-cta {
        padding: 16px;
    }

    .sidebar-cta .cta-card {
        background: var(--primary-bg);
        border-radius: 14px;
        padding: 16px;
    }

    /* 移动端顶栏 */
    .mobile-topbar {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 60px;
        background: #fff;
        border-bottom: 1px solid var(--border);
        z-index: 55;
        align-items: center;
        justify-content: space-between;
        padding: 0 16px;
    }

    .menu-btn {
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
        color: var(--body);
        transition: background .2s;
    }

    .menu-btn:hover {
        background: var(--primary-bg);
    }

    /* 移动端抽屉 */
    .drawer-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, .4);
        z-index: 60;
        opacity: 0;
        visibility: hidden;
        transition: all .3s ease;
    }

    .drawer-overlay.open {
        opacity: 1;
        visibility: visible;
    }

    .mobile-drawer {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        width: 288px;
        background: #fff;
        z-index: 70;
        transform: translateX(-100%);
        transition: transform .3s ease;
        display: flex;
        flex-direction: column;
    }

    .mobile-drawer.open {
        transform: translateX(0);
    }

    .drawer-head {
        height: 60px;
        padding: 0 16px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-bottom: 1px solid var(--border);
    }

    .drawer-close {
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
        color: var(--body);
        transition: background .2s;
    }

    .drawer-close:hover {
        background: var(--primary-bg);
    }

    /* 分类横幅 */
    .category-hero {
        position: relative;
        overflow: hidden;
        background: var(--primary-bg);
    }

    .category-hero-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        opacity: .15;
    }

    .category-hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(to right, var(--primary-bg) 20%, rgba(255, 255, 255, .92) 80%);
    }

    .hero-icon {
        width: 58px;
        height: 58px;
        border-radius: 16px;
        background: var(--primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 10px 24px rgba(27, 111, 191, .25);
        flex-shrink: 0;
    }

    /* 卡片 */
    .feature-card {
        background: #fff;
        border: 1px solid #F1F5F9;
        border-radius: 16px;
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: all .3s ease;
    }

    .feature-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-6px);
        border-color: rgba(27, 111, 191, .25);
    }

    .feature-card .card-img {
        aspect-ratio: 16 / 9;
        overflow: hidden;
    }

    .feature-card .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s ease;
    }

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

    .tag {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        background: var(--primary-10);
        color: var(--primary);
        font-size: 12px;
        font-weight: 600;
        padding: 4px 10px;
        border-radius: 8px;
    }

    .section-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--accent-bg);
        color: var(--accent-hover);
        font-size: 13px;
        font-weight: 600;
        padding: 6px 14px;
        border-radius: 999px;
    }

    /* 数据区 */
    .stats-band {
        background: var(--primary-bg);
        border-radius: 20px;
    }

    .stat-number {
        font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
        font-size: 38px;
        font-weight: 700;
        color: var(--primary);
        line-height: 1.2;
    }

    /* 图文分栏 */
    .split-img {
        border-radius: 16px;
        box-shadow: var(--shadow);
        overflow: hidden;
    }

    .split-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .feature-list-item {
        display: flex;
        gap: 14px;
        padding: 16px;
        border-radius: 12px;
        background: #fff;
        border: 1px solid #F1F5F9;
        transition: all .25s ease;
    }

    .feature-list-item:hover {
        box-shadow: var(--shadow);
        transform: translateX(4px);
    }

    .feature-list-item .icon-box {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: var(--primary-bg);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        flex-shrink: 0;
    }

    /* FAQ */
    .faq-wrap {
        max-width: 800px;
        margin: 0 auto;
    }

    .faq-item {
        background: #fff;
        border: 1px solid #F1F5F9;
        border-radius: 14px;
        margin-bottom: 12px;
        box-shadow: 0 4px 16px rgba(2, 44, 102, .04);
        transition: box-shadow .25s;
    }

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

    .faq-item.active {
        border-color: rgba(27, 111, 191, .25);
    }

    .faq-question {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 22px;
        font-size: 15px;
        font-weight: 600;
        color: var(--heading);
        text-align: left;
        border-radius: 14px;
    }

    .faq-question i {
        font-size: 14px;
        color: var(--primary);
        transition: transform .3s ease;
        flex-shrink: 0;
        margin-left: 12px;
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height .3s ease-out;
        padding: 0 22px;
        font-size: 14px;
        color: var(--muted);
        line-height: 1.8;
    }

    .faq-answer-inner {
        padding-bottom: 18px;
    }

    .faq-item.active .faq-question i {
        transform: rotate(45deg);
    }

    /* CTA */
    .cta-band {
        position: relative;
        overflow: hidden;
        background: var(--primary-dark);
        border-radius: 20px;
    }

    .cta-band-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-3.webp');
        background-size: cover;
        background-position: center;
        opacity: .18;
    }

    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: var(--primary);
        color: #fff;
        font-size: 15px;
        font-weight: 500;
        padding: 12px 28px;
        border-radius: 10px;
        transition: all .2s ease;
        box-shadow: 0 4px 12px rgba(27, 111, 191, .2);
    }

    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-1px);
        box-shadow: 0 8px 20px rgba(27, 111, 191, .3);
    }

    .btn-primary:active {
        transform: scale(.98);
    }

    .btn-primary:focus-visible {
        outline: none;
        box-shadow: 0 0 0 4px rgba(27, 111, 191, .2);
    }

    .btn-accent {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: var(--accent);
        color: #fff;
        font-size: 15px;
        font-weight: 500;
        padding: 12px 28px;
        border-radius: 10px;
        transition: all .2s ease;
        box-shadow: 0 4px 12px rgba(249, 115, 22, .25);
    }

    .btn-accent:hover {
        background: var(--accent-hover);
        transform: translateY(-1px);
        box-shadow: 0 8px 20px rgba(249, 115, 22, .3);
    }

    .btn-accent:active {
        transform: scale(.98);
    }

    /* 页脚 */
    .footer {
        background: #F8FAFC;
        border-top: 1px solid var(--border);
    }

    .footer a {
        transition: color .2s;
    }

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

    .footer-bottom {
        border-top: 1px solid var(--border);
        padding-top: 24px;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 12px;
        font-size: 13px;
        color: #94A3B8;
    }

    /* 响应式 */
    @media (max-width: 1023px) and (min-width: 768px) {
        .sidebar {
            width: 80px;
        }
        .sidebar .sidebar-brand {
            padding: 0 18px;
            justify-content: center;
        }
        .sidebar .sidebar-brand-text,
        .sidebar .nav-item .sidebar-text,
        .sidebar-cta .cta-card p {
            display: none;
        }
        .sidebar-nav {
            padding: 12px 10px;
        }
        .nav-item {
            justify-content: center;
            padding: 12px 0;
        }
        .nav-item i {
            margin: 0;
        }
        .sidebar-cta {
            padding: 10px;
        }
        .sidebar-cta .cta-card {
            padding: 10px;
        }
        .sidebar-cta .btn-primary {
            font-size: 0;
            width: 100%;
            padding: 10px 0;
        }
        .sidebar-cta .btn-primary::after {
            content: "\f054";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: #fff;
        }
        .main-content {
            margin-left: 80px;
        }
    }

    @media (max-width: 767px) {
        .sidebar {
            display: none;
        }
        .mobile-topbar {
            display: flex;
        }
        .main-content {
            margin-left: 0;
            padding-top: 60px;
        }
        .section-padding {
            padding: 48px 0;
        }
        .stat-number {
            font-size: 30px;
        }
        .btn-primary,
        .btn-accent {
            width: 100%;
        }
        .hero-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
        }
        .hero-icon i {
            font-size: 18px;
        }
        .category-hero .hero-title {
            font-size: 28px;
        }
    }

    @media (min-width: 768px) {
        .section-padding {
            padding: 72px 0;
        }
    }

    @media (min-width: 1024px) {
        .section-padding {
            padding: 80px 0;
        }
    }

/* roulang page: category2 */
:root {
            --primary: #1B6FBF;
            --primary-dark: #155FA6;
            --primary-light: #E7F1F9;
            --primary-10: rgba(27, 111, 191, 0.08);
            --accent: #F97316;
            --accent-dark: #EA580C;
            --accent-light: #FEF0E7;
            --bg: #F5F8FC;
            --card: #FFFFFF;
            --text: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: #E2E8F0;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 8px 30px rgba(2, 44, 102, 0.08);
            --shadow-hover: 0 16px 40px rgba(2, 44, 102, 0.14);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            display: block;
            max-width: 100%;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input {
            font: inherit;
            border: none;
            background: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            height: 3rem;
            padding: 0 1.5rem;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: 1.5px solid transparent;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(.98);
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(27, 111, 191, .15);
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
        }
        .btn-sm {
            height: 2.5rem;
            padding: 0 1rem;
            font-size: 14px;
        }

        /* ===== 标签 ===== */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            padding: .3rem .7rem;
            border-radius: 8px;
            font-size: 12px;
            font-weight: 600;
        }
        .tag-primary {
            background: var(--primary-10);
            color: var(--primary);
        }
        .tag-accent {
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 60;
            width: 16rem;
            background: #fff;
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            transition: transform .3s ease;
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: .5rem;
            height: 4rem;
            padding: 0 1.5rem;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            border-bottom: 1px solid var(--border);
            flex-shrink: 0;
        }
        .sidebar-nav {
            padding: 1rem .75rem;
            display: flex;
            flex-direction: column;
            gap: .25rem;
            flex: 1;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: .75rem;
            height: 2.5rem;
            padding: 0 .75rem;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            transition: all .2s ease;
            position: relative;
        }
        .nav-item i {
            width: 1.25rem;
            text-align: center;
            font-size: 15px;
            color: var(--text-muted);
            transition: color .2s ease;
        }
        .nav-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-item:hover i {
            color: var(--primary);
        }
        .nav-item.active {
            background: var(--primary-10);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-item.active i {
            color: var(--primary);
        }
        .nav-item.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 1.25rem;
            border-radius: 0 3px 3px 0;
            background: var(--primary);
        }
        .sidebar-cta {
            padding: 1rem;
        }
        .sidebar-cta .card-mini {
            background: var(--primary-light);
            border-radius: var(--radius);
            padding: 1rem;
            text-align: center;
        }
        .sidebar-cta p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: .75rem;
        }

        /* ===== 主内容 ===== */
        .main-container {
            margin-left: 16rem;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .main-content {
            flex: 1;
        }

        /* ===== 移动端顶栏 ===== */
        .mobile-bar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 55;
            height: 4rem;
            padding: 0 1.25rem;
            background: #fff;
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
        }
        .mobile-bar .sidebar-logo {
            height: auto;
            padding: 0;
            border: none;
            font-size: 17px;
        }
        .menu-toggle {
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: .5rem;
            border-radius: 8px;
            transition: background .2s ease;
        }
        .menu-toggle:hover {
            background: var(--primary-light);
        }

        /* ===== 抽屉 ===== */
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 70;
            background: rgba(15, 23, 42, .4);
            opacity: 0;
            transition: opacity .3s ease;
        }
        .drawer-overlay.show {
            display: block;
            opacity: 1;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 75;
            width: 17rem;
            background: #fff;
            transform: translateX(-100%);
            transition: transform .3s ease;
            display: flex;
            flex-direction: column;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-close {
            align-self: flex-end;
            font-size: 1.2rem;
            padding: 1rem 1.25rem 0;
            color: var(--text-muted);
            cursor: pointer;
        }
        .mobile-drawer .sidebar-nav {
            margin-top: 1rem;
        }

        /* ===== 分类横幅 ===== */
        .cat-hero {
            padding: 3.5rem 0 3rem;
            position: relative;
            overflow: hidden;
            background: linear-gradient(rgba(231, 241, 249, .94), rgba(231, 241, 249, .94)), url('/assets/images/backpic/back-2.webp') center/cover;
            border-bottom: 1px solid var(--border);
        }
        .cat-hero .container {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 3rem;
            align-items: center;
        }
        .cat-hero h1 {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin: .85rem 0 1rem;
            letter-spacing: .5px;
        }
        .cat-hero p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 34rem;
            line-height: 1.8;
        }
        .cat-hero-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(27, 111, 191, .15);
        }
        .cat-hero-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 5rem 0;
        }
        .section-tint {
            background: #fff;
            border-top: 1px solid rgba(226, 232, 240, .6);
            border-bottom: 1px solid rgba(226, 232, 240, .6);
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 3rem;
        }
        .section-head h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: .5rem;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--card);
            border: 1px solid #F1F5F9;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(27, 111, 191, .3);
        }

        /* ===== 功能卡片 ===== */
        .feature-card {
            padding: 2rem;
        }
        .feature-card .icon-wrap {
            width: 3rem;
            height: 3rem;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 1.25rem;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: .6rem;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .step-card {
            text-align: center;
            padding: 2rem 1.5rem;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid #F1F5F9;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
        }
        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .step-num {
            width: 3.25rem;
            height: 3.25rem;
            margin: 0 auto 1rem;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: .5rem;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 数据区 ===== */
        .stats-band {
            background: var(--primary-light);
            padding: 4.5rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stat-num {
            font-size: 2.75rem;
            font-weight: 700;
            color: var(--primary);
            font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
            letter-spacing: -.5px;
        }
        .stat-label {
            font-size: 15px;
            color: var(--text-body);
            margin-top: .25rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 48rem;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid #F1F5F9;
            border-radius: var(--radius);
            margin-bottom: .75rem;
            box-shadow: 0 4px 16px rgba(2, 44, 102, .06);
            overflow: hidden;
            transition: box-shadow .3s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            transition: color .2s ease;
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-icon {
            transition: transform .3s ease;
            color: var(--primary);
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-a-inner {
            padding: 0 1.5rem 1.25rem;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.85;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-band {
            background: var(--primary-dark);
            padding: 4.5rem 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover;
            opacity: .08;
        }
        .cta-band .container {
            position: relative;
            z-index: 1;
        }
        .cta-band h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: .75rem;
            color: #fff;
        }
        .cta-band p {
            color: rgba(255, 255, 255, .85);
            max-width: 36rem;
            margin: 0 auto 1.75rem;
            font-size: 15px;
            line-height: 1.7;
        }
        .cta-band .btn-primary {
            background: var(--accent);
        }
        .cta-band .btn-primary:hover {
            background: var(--accent-dark);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #F8FAFC;
            border-top: 1px solid var(--border);
            padding: 4rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr .8fr .8fr 1fr;
            gap: 3rem;
            padding-bottom: 3rem;
        }
        .footer-brand h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: .75rem;
            display: flex;
            align-items: center;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-top: .5rem;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 1rem;
        }
        .footer-col ul li {
            margin-bottom: .5rem;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color .2s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-contact-list li {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: .5rem;
        }
        .footer-contact-list i {
            color: var(--primary);
            width: 1rem;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 1.5rem 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .footer-bottom a {
            color: var(--primary);
        }
        .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media (min-width: 768px) and (max-width: 1023px) {
            .sidebar {
                width: 5rem;
            }
            .sidebar-logo {
                justify-content: center;
                padding: 0;
                font-size: 0;
                position: relative;
            }
            .sidebar-logo .logo-dot {
                display: none;
            }
            .sidebar-logo::before {
                content: "";
                width: 26px;
                height: 8px;
                border-radius: 3px;
                background: var(--primary);
                display: block;
                box-shadow: 0 -10px 0 0 var(--accent), 0 10px 0 0 var(--primary);
            }
            .sidebar-nav {
                padding: 1rem .5rem;
            }
            .nav-item {
                justify-content: center;
                padding: 0;
                font-size: 0;
            }
            .nav-item i {
                font-size: 17px;
                width: auto;
            }
            .nav-item.active::before {
                left: 2px;
            }
            .sidebar-cta {
                display: none;
            }
            .main-container {
                margin-left: 5rem;
            }
            .mobile-bar {
                display: none;
            }
        }

        @media (max-width: 767px) {
            .sidebar {
                display: none;
            }
            .main-container {
                margin-left: 0;
            }
            .mobile-bar {
                display: flex;
            }
            .cat-hero {
                padding: 2.5rem 0;
            }
            .cat-hero .container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .cat-hero h1 {
                font-size: 1.75rem;
            }
            .cat-hero p {
                font-size: 15px;
            }
            .section {
                padding: 3.5rem 0;
            }
            .section-head {
                margin-bottom: 2rem;
            }
            .section-head h2 {
                font-size: 1.5rem;
            }
            .feature-grid-custom {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .stat-num {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .cta-band {
                padding: 3.5rem 0;
            }
            .cta-band h2 {
                font-size: 1.5rem;
            }
            .btn {
                width: 100%;
            }
            .btn + .btn {
                margin-top: .5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.25rem;
            }
            .feature-card {
                padding: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: .5rem;
            }
        }