/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1A3C3A;
            --color-primary-light: #2A5C5A;
            --color-accent: #C8A96E;
            --color-accent-light: #DAB97A;
            --color-accent-dark: #B8985E;
            --color-bg: #F8F7F4;
            --color-white: #FFFFFF;
            --color-text: #1A1A1A;
            --color-text-secondary: #4A4A4A;
            --color-text-weak: #8A8A8A;
            --color-border: #E8E8E8;
            --color-success: #2A7A5A;
            --color-error: #D94A4A;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --shadow-card: 0 4px 20px rgba(26, 60, 58, 0.06);
            --shadow-card-hover: 0 8px 40px rgba(26, 60, 58, 0.12);
            --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
            --transition: all 0.3s ease;
            --spacing-section: 80px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --container-max: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--color-accent);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-stack);
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.3;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-fluid {
            width: 100%;
            padding: 0 24px;
        }

        /* ===== 导航 Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            height: 60px;
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }

        .site-header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .header-left {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .logo-text {
            color: var(--color-primary);
        }
        .logo-text .brand-highlight {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--color-primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--color-primary);
        }
        .nav-links a.active::after {
            width: 100%;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn-nav-cta {
            background: var(--color-accent);
            color: var(--color-white);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            transition: var(--transition);
            letter-spacing: 0.3px;
        }

        .btn-nav-cta:hover {
            background: var(--color-accent-dark);
            color: var(--color-white);
            transform: translateY(-1px);
        }

        .search-toggle {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            font-size: 1rem;
            border-radius: 50%;
            transition: var(--transition);
            cursor: pointer;
        }

        .search-toggle:hover {
            color: var(--color-primary);
            background: rgba(26, 60, 58, 0.06);
        }

        .search-box {
            display: none;
            position: absolute;
            top: 60px;
            right: 24px;
            width: 280px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card-hover);
            padding: 12px;
            z-index: 1001;
        }

        .search-box.open {
            display: block;
            animation: fadeDown 0.25s ease;
        }

        .search-box input {
            width: 100%;
            height: 42px;
            padding: 0 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            font-size: 0.9rem;
            color: var(--color-text);
        }

        .search-box input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 60, 58, 0.1);
        }

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

        /* 汉堡菜单 */
        .hamburger {
            display: none;
            width: 36px;
            height: 36px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: var(--transition);
        }

        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            width: 100%;
            background: var(--color-white);
            padding: 24px 20px 32px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            z-index: 999;
            border-top: 1px solid var(--color-border);
        }

        .mobile-menu.open {
            display: block;
            animation: fadeDown 0.25s ease;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--color-text);
            border-bottom: 1px solid var(--color-border);
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a.active {
            color: var(--color-primary);
        }
        .mobile-menu .mobile-cta {
            margin-top: 16px;
            background: var(--color-accent);
            color: var(--color-white);
            text-align: center;
            padding: 12px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            border-bottom: none;
        }

        /* ===== Hero 分屏 ===== */
        .hero-split {
            display: flex;
            min-height: 100vh;
            padding-top: 60px;
            background: var(--color-bg);
        }

        .hero-content {
            flex: 0 0 55%;
            max-width: 55%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 80px 60px 80px 48px;
            position: relative;
            z-index: 2;
        }

        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(26, 60, 58, 0.08);
            color: var(--color-primary);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 24px;
            width: fit-content;
        }

        .hero-content h1 {
            font-size: 3.25rem;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            max-width: 640px;
        }

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

        .hero-content .hero-sub {
            font-size: 1.2rem;
            font-weight: 400;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 520px;
        }

        .hero-btns {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 1rem;
            font-weight: 600;
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            transition: var(--transition);
            border: 2px solid var(--color-primary);
            letter-spacing: 0.5px;
        }

        .btn-primary:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-light);
            color: var(--color-white);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 60, 58, 0.2);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-link {
            color: var(--color-accent);
            font-size: 1rem;
            font-weight: 500;
            padding: 8px 4px;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-link:hover {
            color: var(--color-accent-dark);
            border-bottom-color: var(--color-accent);
        }

        .btn-link i {
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .btn-link:hover i {
            transform: translateX(4px);
        }

        .hero-visual {
            flex: 0 0 45%;
            max-width: 45%;
            position: relative;
            overflow: hidden;
            min-height: 60vh;
        }

        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }

        .hero-visual .overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 30%;
            background: linear-gradient(to top, rgba(248, 247, 244, 0.95) 0%, transparent 100%);
            pointer-events: none;
        }

        /* ===== 指标看板 ===== */
        .metrics-section {
            background: var(--color-bg);
            padding: 60px 0;
            border-top: 1px solid var(--color-border);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .metric-item .metric-number {
            font-size: 3.25rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.1;
            margin-bottom: 4px;
        }

        .metric-item .metric-number .suffix {
            font-size: 1.8rem;
            font-weight: 600;
        }

        .metric-item .metric-divider {
            width: 40px;
            height: 2px;
            background: var(--color-primary);
            margin: 8px auto 12px;
            border-radius: 1px;
        }

        .metric-item .metric-label {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            font-weight: 400;
        }

        /* ===== 服务矩阵 ===== */
        .services-section {
            background: var(--color-white);
            padding: var(--spacing-section) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header h2 {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .service-card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid rgba(232, 232, 232, 0.5);
        }

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

        .service-card .card-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

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

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

        .service-card .card-body {
            padding: 28px 24px 32px;
        }

        .service-card .card-body .card-badge {
            display: inline-block;
            background: rgba(200, 169, 110, 0.15);
            color: var(--color-accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 12px;
            margin-bottom: 12px;
        }

        .service-card .card-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .service-card .card-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .service-card .card-body .card-link {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .service-card .card-body .card-link:hover {
            color: var(--color-accent-dark);
            gap: 10px;
        }

        /* ===== 结果对比 ===== */
        .compare-section {
            background: var(--color-white);
            padding: var(--spacing-section) 0;
            border-top: 1px solid var(--color-border);
        }

        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .compare-col {
            padding: 32px 28px;
            border-radius: var(--radius-card);
            background: var(--color-bg);
        }

        .compare-col.before {
            border: 1px solid var(--color-border);
        }

        .compare-col.after {
            background: rgba(26, 60, 58, 0.04);
            border: 1px solid rgba(26, 60, 58, 0.12);
        }

        .compare-col .compare-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .compare-col.before .compare-title {
            color: var(--color-text-weak);
        }
        .compare-col.after .compare-title {
            color: var(--color-primary);
        }

        .compare-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
        }

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

        .compare-item .item-label {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
        }

        .compare-item .item-value {
            font-size: 1.4rem;
            font-weight: 700;
        }

        .compare-col.before .item-value {
            color: var(--color-text-weak);
        }
        .compare-col.after .item-value {
            color: var(--color-primary);
        }
        .compare-col.after .item-value.accent {
            color: var(--color-accent);
        }

        .compare-bar-wrap {
            margin-top: 20px;
        }

        .compare-bar-item {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 16px;
        }

        .compare-bar-item .bar-label {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            min-width: 80px;
        }

        .compare-bar-item .bar-track {
            flex: 1;
            height: 28px;
            background: var(--color-border);
            border-radius: 14px;
            overflow: hidden;
            position: relative;
        }

        .compare-bar-item .bar-fill {
            height: 100%;
            border-radius: 14px;
            transition: width 1.5s ease-out;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
        }

        .compare-bar-item .bar-value {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            min-width: 40px;
            text-align: right;
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--color-bg);
            padding: var(--spacing-section) 0;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-card {
            display: flex;
            align-items: stretch;
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            border-left: 3px solid transparent;
        }

        .news-card:hover {
            background: #F0F5F3;
            border-left-color: var(--color-primary);
            box-shadow: var(--shadow-card-hover);
        }

        .news-card .news-thumb {
            width: 200px;
            min-height: 140px;
            flex-shrink: 0;
            overflow: hidden;
        }

        .news-card .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-card .news-body {
            padding: 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-card .news-body .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }

        .news-card .news-body .news-tag {
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 2px 12px;
            border-radius: 10px;
        }

        .news-card .news-body .news-date {
            font-size: 0.8rem;
            color: var(--color-text-weak);
        }

        .news-card .news-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-card .news-body p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .news-body .news-link {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            align-self: flex-start;
        }

        .news-card .news-body .news-link:hover {
            color: var(--color-accent-dark);
            gap: 8px;
        }

        /* 资讯空态 */
        .news-empty {
            text-align: center;
            padding: 60px 20px;
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .news-empty .empty-icon {
            width: 64px;
            height: 64px;
            background: var(--color-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            color: var(--color-text-weak);
        }

        .news-empty p {
            font-size: 1rem;
            color: var(--color-text-secondary);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--color-white);
            padding: var(--spacing-section) 0;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 4px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 0;
            cursor: pointer;
            user-select: none;
            transition: var(--transition);
            gap: 16px;
        }

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

        .faq-question .q-text {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
        }

        .faq-question .q-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-accent);
            transition: var(--transition);
        }

        .faq-question .q-icon.rotate {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0;
        }

        .faq-answer.open {
            max-height: 300px;
            padding: 0 0 20px;
        }

        .faq-answer .answer-inner {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            padding-right: 40px;
        }

        /* ===== CTA 表单 ===== */
        .cta-section {
            background: var(--color-bg);
            padding: var(--spacing-section) 0;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-form-wrap {
            background: var(--color-white);
            padding: 40px 36px;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .cta-form-wrap h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .cta-form-wrap .form-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }

        .cta-form .form-group {
            margin-bottom: 18px;
        }

        .cta-form label {
            display: block;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .cta-form input,
        .cta-form select,
        .cta-form textarea {
            width: 100%;
            height: 48px;
            padding: 0 16px;
            border: 1px solid #D0D0D0;
            border-radius: var(--radius-input);
            font-size: 0.95rem;
            color: var(--color-text);
            background: var(--color-white);
            transition: var(--transition);
        }

        .cta-form input:focus,
        .cta-form select:focus,
        .cta-form textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 60, 58, 0.1);
        }

        .cta-form textarea {
            height: 100px;
            padding: 12px 16px;
            resize: vertical;
        }

        .cta-form .btn-submit {
            width: 100%;
            height: 48px;
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 1rem;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: var(--transition);
            letter-spacing: 0.5px;
        }

        .cta-form .btn-submit:hover {
            background: var(--color-accent);
            color: var(--color-white);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(200, 169, 110, 0.3);
        }

        .cta-form .btn-submit:active {
            transform: scale(0.98);
        }

        .cta-trust {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .trust-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .trust-item .trust-icon {
            width: 48px;
            height: 48px;
            background: rgba(26, 60, 58, 0.08);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .trust-item .trust-text h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .trust-item .trust-text p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-primary);
            color: #E8E8E8;
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 24px;
        }

        .footer-col .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 16px;
        }

        .footer-col .footer-logo .logo-icon-sm {
            width: 28px;
            height: 28px;
            background: var(--color-accent);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 0.9rem;
        }

        .footer-col .footer-desc {
            font-size: 0.85rem;
            color: rgba(232, 232, 232, 0.7);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
        }

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

        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--color-accent);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent-light);
            padding-left: 4px;
        }

        .footer-col .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(232, 232, 232, 0.8);
            margin-bottom: 12px;
        }

        .footer-col .contact-item i {
            width: 16px;
            color: var(--color-accent);
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--color-accent);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        .footer-bottom {
            text-align: center;
            font-size: 0.8rem;
            color: rgba(232, 232, 232, 0.5);
            padding-top: 16px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-content {
                padding: 60px 40px 60px 32px;
            }
            .hero-content h1 {
                font-size: 2.6rem;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 60px;
            }

            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }

            .hero-split {
                flex-direction: column;
                min-height: auto;
            }

            .hero-content {
                flex: 0 0 100%;
                max-width: 100%;
                padding: 40px 24px 32px;
                order: 1;
            }

            .hero-content h1 {
                font-size: 2rem;
                max-width: 100%;
            }

            .hero-content .hero-sub {
                font-size: 1rem;
                max-width: 100%;
            }

            .hero-visual {
                flex: 0 0 100%;
                max-width: 100%;
                min-height: 40vh;
                order: 2;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .metric-item .metric-number {
                font-size: 2.5rem;
            }

            .services-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .compare-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .news-card {
                flex-direction: column;
            }

            .news-card .news-thumb {
                width: 100%;
                height: 180px;
            }

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

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

            .section-header h2 {
                font-size: 1.7rem;
            }

            .hero-btns {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary {
                text-align: center;
            }
            .btn-link {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-section: 40px;
            }

            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-content {
                padding: 32px 20px 24px;
            }
            .hero-visual {
                min-height: 30vh;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .metric-item .metric-number {
                font-size: 2rem;
            }
            .cta-form-wrap {
                padding: 24px 20px;
            }
            .compare-col {
                padding: 20px 16px;
            }
        }

        /* ===== 滚动渐入动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .fade-up .stagger-1 {
            transition-delay: 0.1s;
        }
        .fade-up .stagger-2 {
            transition-delay: 0.2s;
        }
        .fade-up .stagger-3 {
            transition-delay: 0.3s;
        }
        .fade-up .stagger-4 {
            transition-delay: 0.4s;
        }

/* roulang page: article */
/* ========== Design Variables ========== */
        :root {
            --color-primary: #1A3C3A;
            --color-primary-dark: #0f2a28;
            --color-accent: #C8A96E;
            --color-accent-hover: #b8974f;
            --color-bg: #F8F7F4;
            --color-white: #FFFFFF;
            --color-text: #1A1A1A;
            --color-text-secondary: #4A4A4A;
            --color-text-muted: #8A8A8A;
            --color-border: #E8E8E8;
            --color-error: #D94A4A;
            --color-primary-light: #F0F5F3;
            --color-highlight: #E8B84B;

            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --shadow-card: 0 4px 20px rgba(26,60,58,0.06);
            --shadow-card-hover: 0 8px 40px rgba(26,60,58,0.12);
            --shadow-nav: 0 2px 12px rgba(0,0,0,0.04);
            --spacing-section: 80px;
            --container-max: 1200px;
            --header-height: 60px;
            --transition: all 0.3s ease;
        }

        /* ========== Reset & Base ========== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a { color: var(--color-accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-accent-hover); }

        img { max-width: 100%; height: auto; display: block; border-radius: 4px; }

        ul, ol { list-style: none; }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid transparent;
            transition: var(--transition);
            height: var(--header-height);
        }

        .site-header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: var(--shadow-nav);
        }

        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 16px;
            font-weight: 700;
            border-radius: 4px;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 8px 0;
            position: relative;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: var(--transition);
        }

        .nav-links a:hover { color: var(--color-primary); }
        .nav-links a:hover::after { width: 100%; }

        .nav-links a.active {
            color: var(--color-primary);
        }
        .nav-links a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 20px;
            background: var(--color-accent);
            color: var(--color-white);
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: var(--transition);
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }

        .btn-cta:hover {
            background: var(--color-accent-hover);
            color: var(--color-white);
            transform: translateY(-1px);
        }

        .search-toggle {
            background: none;
            border: none;
            font-size: 16px;
            color: var(--color-text-secondary);
            cursor: pointer;
            padding: 8px;
            transition: var(--transition);
            border-radius: 4px;
        }

        .search-toggle:hover { color: var(--color-primary); background: var(--color-primary-light); }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--color-text);
            cursor: pointer;
            padding: 8px;
            transition: var(--transition);
        }

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

        /* ========== Breadcrumb ========== */
        .breadcrumb {
            background: var(--color-bg);
            padding: 16px 0;
            font-size: 14px;
            color: var(--color-text-muted);
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
        }

        .breadcrumb a { color: var(--color-text-secondary); }
        .breadcrumb a:hover { color: var(--color-accent); }
        .breadcrumb span { color: var(--color-text-muted); }

        /* ========== Article Main ========== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--color-white);
        }

        .article-content {
            max-width: 760px;
            margin: 0 auto;
        }

        .article-content h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--color-border);
        }

        .article-category {
            display: inline-block;
            padding: 4px 14px;
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 13px;
            font-weight: 500;
            border-radius: 20px;
            letter-spacing: 0.02em;
        }

        .article-date {
            font-size: 14px;
            color: var(--color-text-muted);
        }

        .article-date i { margin-right: 6px; }

        .article-body {
            font-size: 18px;
            line-height: 1.8;
            color: var(--color-text);
        }

        .article-body h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--color-primary);
            margin: 40px 0 16px;
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-primary);
            margin: 32px 0 12px;
        }

        .article-body p {
            margin-bottom: 24px;
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 16px 24px;
            border-left: 4px solid var(--color-primary);
            background: var(--color-primary-light);
            border-radius: 0 4px 4px 0;
            font-style: normal;
            color: var(--color-text-secondary);
        }

        .article-body img {
            max-width: 100%;
            border-radius: 8px;
            margin: 24px 0;
        }

        .article-body figcaption {
            font-size: 13px;
            color: var(--color-text-muted);
            text-align: center;
            margin-top: -16px;
            margin-bottom: 24px;
        }

        .article-body ul, .article-body ol {
            margin: 16px 0 24px;
            padding-left: 24px;
        }

        .article-body li {
            margin-bottom: 10px;
            line-height: 1.7;
        }

        .article-body ul li { list-style: disc; }
        .article-body ol li { list-style: decimal; }

        .article-body a { color: var(--color-accent); text-decoration: underline; }
        .article-body a:hover { color: var(--color-accent-hover); }

        /* ========== Article Not Found ========== */
        .article-not-found {
            max-width: 600px;
            margin: 80px auto;
            text-align: center;
            padding: 60px 40px;
            background: var(--color-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .article-not-found i {
            font-size: 56px;
            color: var(--color-text-muted);
            margin-bottom: 24px;
        }

        .article-not-found h2 {
            font-size: 28px;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .article-not-found p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }

        .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: var(--transition);
        }

        .btn-home:hover {
            background: var(--color-accent);
            color: var(--color-white);
            transform: translateY(-2px);
        }

        /* ========== Related Section ========== */
        .related-section {
            padding: 80px 0;
            background: var(--color-bg);
        }

        .related-section h3 {
            font-size: 28px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 40px;
            text-align: center;
            letter-spacing: -0.01em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .related-card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }

        .related-card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card-body h4 a { color: var(--color-text); }
        .related-card-body h4 a:hover { color: var(--color-accent); }

        .related-card-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
        }

        .related-date {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* ========== Back Home ========== */
        .back-home {
            padding: 24px 0 40px;
            background: var(--color-white);
            text-align: center;
        }

        .back-home a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-accent);
            transition: var(--transition);
        }

        .back-home a:hover { color: var(--color-accent-hover); gap: 12px; }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--color-primary);
            color: #E8E8E8;
            padding: 60px 0 30px;
        }

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

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
        }

        .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            background: var(--color-accent);
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 700;
            border-radius: 4px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #C8C8C8;
        }

        .footer-col h5 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
        }

        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-accent);
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: #DAB97A; }

        .contact-item {
            font-size: 14px;
            color: #C8C8C8;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .contact-item i { width: 16px; color: var(--color-accent); }

        .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 8px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.08);
            color: #E8E8E8;
            font-size: 18px;
            border-radius: 50%;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--color-accent);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 12px;
            color: rgba(232,232,232,0.6);
        }

        /* ========== Responsive ========== */
        @media screen and (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

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

            .article-content h1 { font-size: 36px; }
        }

        @media screen and (max-width: 767px) {
            :root { --spacing-section: 40px; }

            .nav-links {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                padding: 24px 20px;
                gap: 16px;
                box-shadow: 0 20px 40px rgba(0,0,0,0.08);
                border-top: 1px solid var(--color-border);
                z-index: 999;
            }

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

            .nav-links a { font-size: 18px; padding: 12px 0; }

            .menu-toggle { display: block; }

            .header-actions .btn-cta { display: none; }

            .article-main { padding: 40px 0 60px; }

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

            .article-body { font-size: 16px; line-height: 1.7; }

            .article-body h2 { font-size: 24px; }
            .article-body h3 { font-size: 20px; }

            .related-grid { grid-template-columns: 1fr; gap: 24px; }

            .related-section { padding: 60px 0; }
            .related-section h3 { font-size: 24px; margin-bottom: 24px; }

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

            .footer-col { text-align: center; }
            .footer-logo { justify-content: center; }
            .footer-social { justify-content: center; }

            .article-not-found { padding: 40px 20px; margin: 40px auto; }
            .article-not-found i { font-size: 40px; }

            .breadcrumb { font-size: 13px; padding: 12px 0; }

            .back-home { padding: 16px 0 32px; }
        }

        @media screen and (max-width: 520px) {
            .article-content h1 { font-size: 24px; }
            .article-body { font-size: 15px; }
            .article-body h2 { font-size: 20px; }
            .article-body h3 { font-size: 18px; }

            .related-card img { height: 140px; }
            .related-card-body { padding: 16px 16px 20px; }
            .related-card-body h4 { font-size: 16px; }
        }

        /* ========== Scroll Animation ========== */
        .fade-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== Foundation Overrides ========== */
        .button { border-radius: var(--radius-btn); transition: var(--transition); }
        .button.primary { background: var(--color-primary); }
        .button.primary:hover { background: var(--color-primary-dark); }
        .button.accent { background: var(--color-accent); color: var(--color-white); }
        .button.accent:hover { background: var(--color-accent-hover); }

        input, textarea, select { border-radius: var(--radius-input); border: 1px solid #D0D0D0; transition: var(--transition); }
        input:focus, textarea:focus, select:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(26,60,58,0.1); outline: none; }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1A3C3A;
            --color-primary-dark: #0f2a28;
            --color-accent: #C8A96E;
            --color-accent-hover: #d4b87a;
            --color-accent-dark: #b89955;
            --color-bg: #F8F7F4;
            --color-white: #FFFFFF;
            --color-text: #1A1A1A;
            --color-text-secondary: #4A4A4A;
            --color-text-muted: #8A8A8A;
            --color-border: #E8E8E8;
            --color-focus: #1A3C3A;
            --color-error: #D94A4A;
            --color-card-hover-bg: #F0F5F3;
            --color-footer-bg: #1A3C3A;
            --color-footer-text: #E8E8E8;
            --color-footer-link: #C8A96E;
            --color-footer-link-hover: #DAB97A;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --radius-image: 4px;
            --shadow-card: 0 4px 20px rgba(26, 60, 58, 0.06);
            --shadow-card-hover: 0 8px 40px rgba(26, 60, 58, 0.12);
            --shadow-nav: 0 2px 12px rgba(26, 60, 58, 0.06);
            --transition: all 0.3s ease;
            --spacing-section: 80px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --max-width: 1200px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.625;
            color: var(--color-text);
            background: var(--color-bg);
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--color-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-image);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            transition: var(--transition);
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6,
        p {
            margin: 0 0 1rem;
        }
        h1 {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 600;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 24px;
            line-height: 1.35;
            font-weight: 600;
        }
        h4 {
            font-size: 20px;
            line-height: 1.4;
            font-weight: 500;
        }
        h5 {
            font-size: 16px;
            line-height: 1.5;
            font-weight: 600;
        }
        .text-small {
            font-size: 14px;
            line-height: 1.5;
            color: var(--color-text-muted);
        }
        .text-micro {
            font-size: 12px;
            line-height: 1.5;
            color: var(--color-text-muted);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media screen and (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            height: 60px;
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }
        .site-header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: var(--shadow-nav);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .header-left {
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: var(--color-accent);
            border-radius: 6px;
            font-size: 18px;
            font-weight: 700;
        }
        .logo span {
            color: var(--color-primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 4px 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--color-primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--color-primary);
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-right .btn-cta {
            background: var(--color-accent);
            color: var(--color-white);
            font-size: 14px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
            line-height: 1.4;
        }
        .header-right .btn-cta:hover {
            background: var(--color-accent-hover);
            color: var(--color-white);
            transform: translateY(-1px);
        }
        .header-right .btn-cta:active {
            transform: scale(0.98);
        }
        .search-toggle {
            background: none;
            border: none;
            font-size: 18px;
            color: var(--color-text);
            cursor: pointer;
            padding: 4px 8px;
            transition: var(--transition);
        }
        .search-toggle:hover {
            color: var(--color-primary);
        }
        .search-box {
            display: none;
            align-items: center;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            overflow: hidden;
            transition: var(--transition);
        }
        .search-box.open {
            display: flex;
        }
        .search-box input {
            border: none;
            padding: 6px 12px;
            font-size: 14px;
            width: 200px;
            background: transparent;
            color: var(--color-text);
        }
        .search-box input::placeholder {
            color: var(--color-text-muted);
        }
        .search-box input:focus {
            outline: none;
        }
        .search-box button {
            background: none;
            border: none;
            padding: 6px 12px;
            color: var(--color-text-muted);
            cursor: pointer;
        }
        .search-box button:hover {
            color: var(--color-primary);
        }
        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端导航 */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-white);
            z-index: 999;
            padding: 40px 24px;
            flex-direction: column;
            gap: 20px;
            overflow-y: auto;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            font-size: 20px;
            font-weight: 500;
            color: var(--color-text);
            padding: 12px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .mobile-nav a.active {
            color: var(--color-primary);
        }
        .mobile-nav .btn-cta-mobile {
            margin-top: 16px;
            background: var(--color-accent);
            color: var(--color-white);
            font-size: 16px;
            font-weight: 600;
            padding: 14px 24px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            text-align: center;
            text-decoration: none;
            transition: var(--transition);
        }
        .mobile-nav .btn-cta-mobile:hover {
            background: var(--color-accent-hover);
            color: var(--color-white);
        }

        /* ===== Hero ===== */
        .hero-section {
            padding: 120px 0 80px;
            background: var(--color-bg);
            position: relative;
            overflow: hidden;
        }
        .hero-grid {
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .hero-content {
            flex: 1 1 55%;
        }
        .hero-visual {
            flex: 1 1 45%;
            border-radius: var(--radius-card);
            overflow: hidden;
            min-height: 360px;
            background: var(--color-border);
            position: relative;
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }
        .hero-visual::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 30%;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.05), transparent);
            pointer-events: none;
        }
        .hero-content h1 {
            color: var(--color-primary);
            margin-bottom: 16px;
        }
        .hero-content .subtitle {
            font-size: 20px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero-buttons {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .hero-buttons .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 16px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
        }
        .hero-buttons .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            color: var(--color-white);
        }
        .hero-buttons .btn-primary:active {
            transform: scale(0.98);
        }
        .hero-buttons .btn-link {
            color: var(--color-accent);
            font-size: 16px;
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 4px;
            transition: var(--transition);
        }
        .hero-buttons .btn-link:hover {
            color: var(--color-accent-hover);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-bg-white {
            background: var(--color-white);
        }
        .section-bg-light {
            background: var(--color-bg);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--color-text-secondary);
            font-size: 18px;
            max-width: 680px;
            margin: 0 auto;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: var(--color-accent);
            margin: 16px auto 0;
            border-radius: 2px;
        }

        /* ===== 核心服务卡片 ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .service-card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .service-card .card-img {
            height: 180px;
            overflow: hidden;
        }
        .service-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .service-card:hover .card-img img {
            transform: scale(1.03);
        }
        .service-card .card-body {
            padding: 24px 28px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .card-body h3 {
            color: var(--color-primary);
            margin-bottom: 8px;
            font-size: 20px;
        }
        .service-card .card-body p {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .service-card .card-body .card-link {
            color: var(--color-accent);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .service-card .card-body .card-link:hover {
            color: var(--color-accent-dark);
            gap: 8px;
        }
        .service-card .badge-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            color: var(--color-accent);
            border-radius: 50%;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        /* ===== 适用场景 ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scene-item {
            background: var(--color-white);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .scene-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .scene-item .scene-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            background: var(--color-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--color-primary);
            transition: var(--transition);
        }
        .scene-item:hover .scene-icon {
            background: var(--color-primary);
            color: var(--color-accent);
        }
        .scene-item h4 {
            color: var(--color-primary);
            margin-bottom: 8px;
            font-size: 18px;
        }
        .scene-item p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== 数据看板 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 52px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.1;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 14px;
            color: var(--color-text-muted);
            letter-spacing: 0.02em;
        }
        .stat-item .stat-line {
            width: 40px;
            height: 2px;
            background: var(--color-primary);
            margin: 8px auto 12px;
            border-radius: 1px;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--color-border);
            z-index: 0;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--color-white);
            padding: 24px 16px;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background: var(--color-primary);
            color: var(--color-accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
        }
        .step-item h4 {
            color: var(--color-primary);
            margin-bottom: 8px;
            font-size: 17px;
        }
        .step-item p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 0;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--color-accent);
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-question.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 0;
        }
        .faq-answer.open {
            max-height: 400px;
            padding: 0 0 20px;
        }
        .faq-answer p {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== CTA 表单 ===== */
        .cta-section {
            background: var(--color-bg);
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .cta-form-wrap {
            background: var(--color-white);
            padding: 40px 36px;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }
        .cta-form-wrap h3 {
            color: var(--color-primary);
            margin-bottom: 24px;
            font-size: 22px;
        }
        .cta-form .form-group {
            margin-bottom: 20px;
        }
        .cta-form label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .cta-form input,
        .cta-form select,
        .cta-form textarea {
            width: 100%;
            height: 48px;
            padding: 0 16px;
            border: 1px solid #D0D0D0;
            border-radius: var(--radius-input);
            font-size: 15px;
            color: var(--color-text);
            background: var(--color-white);
            transition: var(--transition);
        }
        .cta-form input:focus,
        .cta-form select:focus,
        .cta-form textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 60, 58, 0.12);
            outline: none;
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: var(--color-text-muted);
        }
        .cta-form textarea {
            height: 100px;
            padding: 12px 16px;
            resize: vertical;
        }
        .cta-form .btn-submit {
            width: 100%;
            height: 48px;
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 16px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: var(--transition);
        }
        .cta-form .btn-submit:hover {
            background: var(--color-accent);
            color: var(--color-white);
            transform: translateY(-1px);
        }
        .cta-form .btn-submit:active {
            transform: scale(0.98);
        }
        .cta-right {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .cta-right .trust-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--color-white);
            padding: 24px 20px;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .cta-right .trust-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .cta-right .trust-item .trust-icon {
            width: 48px;
            height: 48px;
            flex-shrink: 0;
            background: var(--color-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-primary);
        }
        .cta-right .trust-item h4 {
            color: var(--color-primary);
            font-size: 16px;
            margin-bottom: 4px;
        }
        .cta-right .trust-item p {
            color: var(--color-text-secondary);
            font-size: 13px;
            line-height: 1.5;
            margin-bottom: 0;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
        }
        .footer-logo .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            color: var(--color-primary);
            border-radius: 6px;
            font-size: 16px;
            font-weight: 700;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-footer-text);
            opacity: 0.85;
            margin-bottom: 0;
        }
        .footer-col h5 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: var(--color-footer-link);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--color-footer-link-hover);
            padding-left: 4px;
        }
        .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            margin-bottom: 10px;
            color: var(--color-footer-text);
            opacity: 0.9;
        }
        .contact-item i {
            width: 16px;
            color: var(--color-accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            color: var(--color-footer-text);
            font-size: 18px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--color-accent);
            color: var(--color-primary);
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            opacity: 0.6;
            color: var(--color-footer-text);
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1023px) {
            .hero-grid {
                flex-direction: column;
                gap: 32px;
            }
            .hero-content {
                flex: none;
                width: 100%;
            }
            .hero-visual {
                flex: none;
                width: 100%;
                min-height: 280px;
            }
            .hero-visual img {
                min-height: 280px;
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-grid::before {
                display: none;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            :root {
                --spacing-section: 60px;
            }
            h1 {
                font-size: 40px;
            }
            h2 {
                font-size: 30px;
            }
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-right .btn-cta {
                display: none;
            }
            .header-right .search-toggle {
                display: none;
            }
        }

        @media screen and (max-width: 767px) {
            :root {
                --spacing-section: 40px;
            }
            h1 {
                font-size: 32px;
            }
            h2 {
                font-size: 26px;
            }
            h3 {
                font-size: 20px;
            }
            .hero-section {
                padding: 100px 0 40px;
            }
            .hero-content .subtitle {
                font-size: 17px;
            }
            .service-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .scene-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 38px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-form-wrap {
                padding: 24px 20px;
            }
            .cta-right .trust-item {
                padding: 18px 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-col {
                text-align: center;
            }
            .footer-logo {
                justify-content: center;
            }
            .footer-social {
                justify-content: center;
            }
            .contact-item {
                justify-content: center;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .section-title p {
                font-size: 16px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-buttons .btn-primary {
                text-align: center;
            }
            .hero-buttons .btn-link {
                text-align: center;
            }
            .header-inner {
                padding: 0 16px;
            }
        }

        @media screen and (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
            .service-card .card-body {
                padding: 20px 16px 24px;
            }
        }

        /* ===== 动画辅助 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .fade-up-delay-1 {
            transition-delay: 0.1s;
        }
        .fade-up-delay-2 {
            transition-delay: 0.2s;
        }
        .fade-up-delay-3 {
            transition-delay: 0.3s;
        }
        .fade-up-delay-4 {
            transition-delay: 0.4s;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-primary);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-primary-dark);
        }

        /* ===== 选择高亮 ===== */
        ::selection {
            background: var(--color-primary);
            color: var(--color-white);
        }

        /* ===== Focus 可访问性 ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #1A3C3A;
            --color-primary-dark: #0F2A28;
            --color-accent: #C8A96E;
            --color-accent-hover: #DAB97A;
            --color-accent-dark: #B89650;
            --color-bg: #F8F7F4;
            --color-white: #FFFFFF;
            --color-text: #1A1A1A;
            --color-text-secondary: #4A4A4A;
            --color-text-weak: #8A8A8A;
            --color-border: #E8E8E8;
            --color-light-hover: #F0F5F3;
            --color-gold: #E8B84B;
            --color-error: #D94A4A;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --shadow-card: 0 4px 20px rgba(26, 60, 58, 0.06);
            --shadow-card-hover: 0 8px 40px rgba(26, 60, 58, 0.12);
            --shadow-nav: 0 2px 12px rgba(0, 0, 0, 0.04);
            --transition: all 0.3s ease;
            --spacing-section: 80px;
            --container-max: 1200px;
            --nav-height: 60px;
        }

        /* ========== Reset & Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.625;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--color-accent);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--color-text);
            line-height: 1.2;
        }

        /* ========== Layout ========== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .row {
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .section-padding {
            padding: var(--spacing-section) 0;
        }
        .section-bg-white {
            background: var(--color-white);
        }
        .section-bg-light {
            background: var(--color-bg);
        }
        .section-bg-primary {
            background: var(--color-primary);
            color: var(--color-white);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            height: var(--nav-height);
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }
        .site-header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: var(--shadow-nav);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .header-left {
            display: flex;
            align-items: center;
            gap: 32px;
            flex-shrink: 0;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--color-primary);
            color: var(--color-accent);
            border-radius: 6px;
            font-size: 18px;
            font-weight: 800;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 6px 2px;
            position: relative;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--color-primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
            background: var(--color-primary);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-accent);
            color: var(--color-white);
            font-size: 14px;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            transition: var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--color-accent-hover);
            color: var(--color-white);
            transform: translateY(-1px);
        }
        .header-cta:active {
            transform: scale(0.97);
        }
        .search-toggle {
            background: none;
            border: none;
            font-size: 16px;
            color: var(--color-text-secondary);
            cursor: pointer;
            padding: 8px;
            border-radius: 4px;
            transition: var(--transition);
        }
        .search-toggle:hover {
            color: var(--color-primary);
            background: rgba(26, 60, 58, 0.06);
        }
        .search-box {
            display: none;
            position: absolute;
            top: calc(var(--nav-height) + 4px);
            right: 24px;
            width: 280px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card-hover);
            padding: 12px 16px;
            z-index: 1001;
        }
        .search-box.open {
            display: block;
        }
        .search-box input {
            width: 100%;
            height: 42px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            padding: 0 14px;
            font-size: 14px;
            transition: var(--transition);
        }
        .search-box input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 60, 58, 0.10);
            outline: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--color-primary);
            cursor: pointer;
            padding: 6px;
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger:hover {
            background: rgba(26, 60, 58, 0.06);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-white);
            z-index: 999;
            padding: 32px 24px;
            flex-direction: column;
            gap: 20px;
            overflow-y: auto;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 18px;
            font-weight: 500;
            color: var(--color-text);
            padding: 12px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .mobile-menu a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-menu .mobile-cta {
            display: inline-flex;
            justify-content: center;
            background: var(--color-accent);
            color: var(--color-white);
            font-size: 16px;
            font-weight: 600;
            padding: 14px 24px;
            border-radius: var(--radius-btn);
            margin-top: 16px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .mobile-menu .mobile-cta:hover {
            background: var(--color-accent-hover);
            color: var(--color-white);
        }

        /* ========== Hero 分类Banner ========== */
        .category-hero {
            position: relative;
            background: var(--color-primary-dark);
            min-height: 360px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.02);
            transition: transform 6s ease;
        }
        .category-hero:hover .category-hero-bg {
            transform: scale(1.06);
        }
        .category-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 42, 40, 0.88) 40%, rgba(15, 42, 40, 0.60) 80%);
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .category-hero h1 {
            font-size: 48px;
            font-weight: 700;
            color: var(--color-white);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            line-height: 1.15;
        }
        .category-hero .hero-sub {
            font-size: 20px;
            color: rgba(255, 255, 255, 0.80);
            max-width: 640px;
            font-weight: 400;
            line-height: 1.6;
            margin-bottom: 28px;
        }
        .category-hero .hero-breadcrumb {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.60);
            margin-bottom: 20px;
        }
        .category-hero .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
        }
        .category-hero .hero-breadcrumb a:hover {
            color: var(--color-accent);
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-actions .btn-primary {
            background: var(--color-accent);
            color: var(--color-white);
            padding: 12px 32px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .hero-actions .btn-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
        }
        .hero-actions .btn-outline-light {
            background: transparent;
            color: var(--color-white);
            padding: 10px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 500;
            border: 2px solid rgba(255, 255, 255, 0.40);
            cursor: pointer;
            transition: var(--transition);
        }
        .hero-actions .btn-outline-light:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(200, 169, 110, 0.08);
        }

        /* ========== 介绍板块 ========== */
        .intro-section .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-text h2 {
            font-size: 36px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }
        .intro-text p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }
        .intro-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .intro-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }
        .intro-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 12px;
        }
        .intro-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-light-hover);
            color: var(--color-primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
        }
        .intro-tags .tag i {
            color: var(--color-accent);
            font-size: 12px;
        }

        /* ========== 服务特色 ========== */
        .features-section .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .features-section .section-title h2 {
            font-size: 36px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .features-section .section-title p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border);
        }
        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 64px;
            height: 64px;
            background: var(--color-light-hover);
            color: var(--color-primary);
            border-radius: 50%;
            font-size: 28px;
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--color-primary);
            color: var(--color-accent);
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .feature-card .feature-num {
            display: inline-block;
            font-size: 32px;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 8px;
            line-height: 1;
        }

        /* ========== 适用场景 ========== */
        .scenarios-section .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .scenarios-section .section-title h2 {
            font-size: 36px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .scenarios-section .section-title p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: var(--color-white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .scenario-card .scenario-img {
            height: 200px;
            overflow: hidden;
        }
        .scenario-card .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .scenario-card:hover .scenario-img img {
            transform: scale(1.05);
        }
        .scenario-card .scenario-body {
            padding: 24px 24px 28px;
        }
        .scenario-card .scenario-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .scenario-card .scenario-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .scenario-card .scenario-body .scenario-tag {
            display: inline-block;
            background: var(--color-light-hover);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 12px;
        }

        /* ========== 服务流程 ========== */
        .process-section .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .process-section .section-title h2 {
            font-size: 36px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 12px;
        }
        .process-section .section-title p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.70);
            max-width: 600px;
            margin: 0 auto;
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-card);
            padding: 32px 20px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            background: var(--color-accent);
            color: var(--color-primary-dark);
            font-size: 22px;
            font-weight: 700;
            border-radius: 50%;
            margin-bottom: 16px;
        }
        .process-step h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.70);
            line-height: 1.6;
        }
        .process-step .step-arrow {
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--color-accent);
            font-size: 20px;
            opacity: 0.5;
        }
        .process-step:last-child .step-arrow {
            display: none;
        }

        /* ========== FAQ ========== */
        .faq-section .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .faq-section .section-title h2 {
            font-size: 36px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .faq-section .section-title p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 4px 0;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 0;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            transition: var(--transition);
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--color-accent-dark);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--color-accent);
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 0;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 0 20px 0;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA 表单 ========== */
        .cta-section .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .cta-form-wrap h2 {
            font-size: 32px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 12px;
        }
        .cta-form-wrap p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
        }
        .cta-form .form-group {
            margin-bottom: 18px;
        }
        .cta-form label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .cta-form input,
        .cta-form select,
        .cta-form textarea {
            width: 100%;
            height: 48px;
            border: 1px solid #D0D0D0;
            border-radius: var(--radius-input);
            padding: 0 16px;
            font-size: 15px;
            transition: var(--transition);
            background: var(--color-white);
        }
        .cta-form textarea {
            height: 100px;
            padding: 12px 16px;
            resize: vertical;
        }
        .cta-form input:focus,
        .cta-form select:focus,
        .cta-form textarea:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 60, 58, 0.10);
            outline: none;
        }
        .cta-form .submit-btn {
            width: 100%;
            height: 48px;
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 16px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: var(--transition);
        }
        .cta-form .submit-btn:hover {
            background: var(--color-accent);
            transform: translateY(-2px);
        }
        .cta-form .submit-btn:active {
            transform: scale(0.98);
        }
        .cta-trust {
            display: flex;
            flex-direction: column;
            gap: 24px;
            padding-top: 24px;
        }
        .cta-trust-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .cta-trust-item .trust-icon {
            font-size: 28px;
            color: var(--color-accent);
            width: 44px;
            text-align: center;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .cta-trust-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
        }
        .cta-trust-item p {
            font-size: 13px;
            color: var(--color-text-weak);
            line-height: 1.6;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-primary);
            color: #E8E8E8;
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 12px;
        }
        .logo-icon-sm {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            color: var(--color-primary);
            border-radius: 4px;
            font-size: 16px;
            font-weight: 800;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 300px;
        }
        .footer-col h5 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }
        .contact-item {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .contact-item i {
            color: var(--color-accent);
            width: 16px;
            font-size: 14px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.70);
            font-size: 18px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--color-accent);
            color: var(--color-primary);
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 60px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-step .step-arrow {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-section .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .category-hero h1 {
                font-size: 38px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 40px;
            }
            .nav-links {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .header-left {
                gap: 16px;
            }
            .intro-section .intro-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .intro-image img {
                height: 240px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-hero {
                min-height: 280px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero .hero-sub {
                font-size: 16px;
            }
            .features-section .section-title h2,
            .scenarios-section .section-title h2,
            .process-section .section-title h2,
            .faq-section .section-title h2 {
                font-size: 28px;
            }
            .cta-form-wrap h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline-light {
                width: 100%;
                text-align: center;
            }
            .search-box {
                right: 12px;
                left: 12px;
                width: auto;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-sub {
                font-size: 15px;
            }
            .feature-card {
                padding: 24px 16px;
            }
            .scenario-card .scenario-body {
                padding: 18px 16px 20px;
            }
            .process-step {
                padding: 24px 16px;
            }
            .faq-question {
                font-size: 15px;
                padding: 14px 0;
            }
            .cta-form input,
            .cta-form select,
            .cta-form textarea {
                height: 44px;
                font-size: 14px;
            }
            .cta-form .submit-btn {
                height: 44px;
                font-size: 15px;
            }
        }

        /* ========== 动画工具 ========== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .fade-up-delay-1 {
            transition-delay: 0.1s;
        }
        .fade-up-delay-2 {
            transition-delay: 0.2s;
        }
        .fade-up-delay-3 {
            transition-delay: 0.3s;
        }
        .fade-up-delay-4 {
            transition-delay: 0.4s;
        }