/* roulang page: index */
/* ==================== 设计变量 ==================== */
        :root {
            --color-primary: #1A5F7A;
            --color-primary-dark: #134B61;
            --color-primary-light: #2E7D9E;
            --color-bg: #FFFFFF;
            --color-bg-warm: #F5F0EB;
            --color-bg-light: #F9F9F9;
            --color-accent: #C49B5C;
            --color-accent-dark: #B0894C;
            --color-text: #2C3E50;
            --color-heading: #1A5F7A;
            --color-muted: #7F8C8D;
            --color-border: #E5E7EB;
            --color-border-light: #EEEEEE;
            --color-white: #FFFFFF;
            --color-overlay: rgba(26, 95, 122, 0.75);
            --color-footer-bg: #1A3B4C;
            --color-footer-text: #B8C9D4;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-full: 50%;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.14);
            --transition-fast: 0.2s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
            --container-max: 1200px;
            --container-padding: 24px;
            --section-gap: 72px;
            --section-gap-mobile: 40px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-heading);
            margin-bottom: 0.5em;
        }

        h1 {
            font-size: 32px;
            line-height: 1.2;
        }

        h2 {
            font-size: 24px;
        }

        h3 {
            font-size: 18px;
        }

        p {
            margin-bottom: 1em;
        }

        /* ==================== 容器 ==================== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: var(--container-padding);
            padding-right: var(--container-padding);
            width: 100%;
        }

        /* ==================== 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(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            min-width: 0;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
            letter-spacing: 1px;
        }

        .nav-logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-heading);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 260px;
            letter-spacing: 0.3px;
        }

        .nav-logo-text:hover {
            color: var(--color-primary);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-menu-item {
            position: relative;
        }

        .nav-menu-link {
            display: block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }

        .nav-menu-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--color-primary);
            border-radius: 3px 3px 0 0;
            transition: width var(--transition-base);
        }

        .nav-menu-link:hover {
            color: var(--color-primary);
            background: rgba(26, 95, 122, 0.06);
        }

        .nav-menu-link:hover::after {
            width: 60%;
        }

        .nav-menu-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-menu-link.active::after {
            width: 60%;
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .nav-hamburger:hover {
            background: rgba(26, 95, 122, 0.08);
        }

        .nav-hamburger span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--color-heading);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .nav-hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-white);
            z-index: 999;
            padding: 24px 16px;
            transform: translateX(100%);
            transition: transform var(--transition-slow);
            overflow-y: auto;
        }

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

        .mobile-nav-link {
            display: block;
            padding: 16px 20px;
            font-size: 17px;
            font-weight: 500;
            color: var(--color-text);
            border-bottom: 1px solid var(--color-border-light);
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast), color var(--transition-fast);
            text-align: center;
        }

        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            background: rgba(26, 95, 122, 0.08);
            color: var(--color-primary);
        }

        /* ==================== 面包屑 ==================== */
        .breadcrumb-bar {
            margin-top: var(--nav-height);
            padding: 12px 0;
            background: var(--color-bg-warm);
            border-bottom: 1px solid var(--color-border-light);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-muted);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .separator {
            color: var(--color-muted);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ==================== Hero ==================== */
        .hero {
            min-height: 88vh;
            background: linear-gradient(135deg, rgba(245, 240, 235, 0.95) 0%, rgba(255, 255, 255, 0.98) 45%, rgba(245, 240, 235, 0.9) 100%);
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding: 40px 0 60px;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26, 95, 122, 0.06) 0%, transparent 70%);
            border-radius: var(--radius-full);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -15%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(196, 155, 92, 0.08) 0%, transparent 70%);
            border-radius: var(--radius-full);
            pointer-events: none;
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 24px;
            position: relative;
            z-index: 1;
            max-width: 820px;
        }

        .hero-brand-row {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-avatar {
            width: 72px;
            height: 72px;
            border-radius: var(--radius-full);
            border: 3px solid var(--color-accent);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 4px 16px rgba(26, 95, 122, 0.3);
            letter-spacing: 1px;
        }

        .hero-brand-info {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-brand-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-heading);
            letter-spacing: 0.5px;
        }

        .hero-brand-sub {
            font-size: 14px;
            color: var(--color-muted);
        }

        .hero-stats-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .hero-stat-badge {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text);
            box-shadow: var(--shadow-sm);
        }

        .hero-stat-badge .stat-icon {
            color: var(--color-accent);
            font-size: 14px;
        }

        .hero-stat-badge .stat-value {
            color: var(--color-primary);
            font-weight: 700;
        }

        .hero h1 {
            font-size: 36px;
            line-height: 1.25;
            color: var(--color-heading);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
            max-width: 780px;
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: var(--color-text);
            max-width: 680px;
            margin-bottom: 8px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        /* ==================== 按钮 ==================== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            text-align: center;
            cursor: pointer;
            letter-spacing: 0.3px;
            line-height: 1.4;
            min-height: 48px;
            border: 2px solid transparent;
        }

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

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            box-shadow: 0 6px 18px rgba(26, 95, 122, 0.3);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 95, 122, 0.25);
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .btn-secondary:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            box-shadow: 0 6px 18px rgba(26, 95, 122, 0.2);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 95, 122, 0.15);
        }

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

        .btn-accent:hover {
            background: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            box-shadow: 0 6px 18px rgba(196, 155, 92, 0.3);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 14px;
            min-height: 38px;
            border-radius: 6px;
        }

        .btn-lg {
            padding: 16px 34px;
            font-size: 17px;
            min-height: 54px;
        }

        /* ==================== Section 通用 ==================== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-warm {
            background: var(--color-bg-warm);
        }

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

        .section-light {
            background: var(--color-bg-light);
        }

        .section-header {
            margin-bottom: 40px;
            max-width: 780px;
        }

        .section-header.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(26, 95, 122, 0.08);
            border: 1px solid rgba(26, 95, 122, 0.2);
            border-radius: var(--radius-lg);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.7;
            max-width: 680px;
        }

        .section-header.center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ==================== 卖点三连 ==================== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 16px;
        }

        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--color-primary);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(26, 95, 122, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--color-primary);
        }

        .feature-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--color-heading);
        }

        .feature-card p {
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ==================== 场景演示 ==================== */
        .scenario-layout {
            display: flex;
            gap: 48px;
            align-items: center;
        }

        .scenario-text {
            flex: 1;
            min-width: 0;
        }

        .scenario-image {
            flex: 1;
            min-width: 0;
            position: relative;
        }

        .scenario-image img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .scenario-image .image-float-badge {
            position: absolute;
            bottom: -16px;
            right: 24px;
            background: var(--color-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            padding: 12px 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-heading);
            border: 1px solid var(--color-border-light);
        }

        .scenario-image .image-float-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: var(--radius-full);
            background: var(--color-accent);
            flex-shrink: 0;
        }

        .scenario-list {
            margin-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .scenario-list-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.6;
        }

        .scenario-list-item .check-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            margin-top: 2px;
        }

        /* ==================== 数据指标 ==================== */
        .stats-band {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            padding: 48px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-band::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: var(--radius-full);
        }

        .stats-band::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(196, 155, 92, 0.15) 0%, transparent 70%);
            border-radius: var(--radius-full);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .stat-block {
            text-align: center;
            padding: 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            backdrop-filter: blur(6px);
            transition: background var(--transition-base);
        }

        .stat-block:hover {
            background: rgba(255, 255, 255, 0.18);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }

        .stat-number .stat-unit {
            font-size: 16px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            margin-left: 2px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.4;
        }

        .stat-progress-ring {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-full);
            border: 3px solid rgba(255, 255, 255, 0.2);
            border-top-color: var(--color-accent);
            margin: 0 auto 12px;
            animation: ring-spin 3s linear infinite;
        }

        @keyframes ring-spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        /* ==================== 客户证言 ==================== */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--color-bg-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
            transform: translateY(-2px);
        }

        .testimonial-top {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
            letter-spacing: 1px;
        }

        .testimonial-user {
            display: flex;
            flex-direction: column;
        }

        .testimonial-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-heading);
        }

        .testimonial-stars {
            font-size: 14px;
            color: var(--color-accent);
            letter-spacing: 2px;
        }

        .testimonial-quote {
            font-size: 15px;
            font-style: italic;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .testimonial-meta {
            font-size: 12px;
            color: var(--color-muted);
        }

        /* ==================== 热门专题 ==================== */
        .topics-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .topic-tag {
            display: inline-block;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            background: var(--color-white);
            border: 1.5px solid rgba(26, 95, 122, 0.3);
            border-radius: var(--radius-lg);
            transition: all var(--transition-base);
            cursor: pointer;
            letter-spacing: 0.3px;
        }

        .topic-tag:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            box-shadow: 0 4px 14px rgba(26, 95, 122, 0.25);
            transform: translateY(-1px);
        }

        .topic-tag.featured {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }

        .topic-tag.featured:hover {
            background: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
        }

        /* ==================== 资讯列表 ==================== */
        .news-layout {
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }

        .news-main {
            flex: 2;
            min-width: 0;
        }

        .news-sidebar {
            flex: 1;
            min-width: 0;
            position: sticky;
            top: calc(var(--nav-height) + 20px);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
            border-radius: var(--radius-sm);
            padding-left: 12px;
            padding-right: 12px;
            margin-left: -12px;
            margin-right: -12px;
        }

        .news-item:hover {
            background: rgba(26, 95, 122, 0.03);
        }

        .news-item-thumb {
            flex-shrink: 0;
            width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--color-bg-warm);
        }

        .news-item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .news-item:hover .news-item-thumb img {
            transform: scale(1.05);
        }

        .news-item-body {
            flex: 1;
            min-width: 0;
        }

        .news-item-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-heading);
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item-title a {
            color: var(--color-heading);
            transition: color var(--transition-fast);
        }

        .news-item-title a:hover {
            color: var(--color-primary);
        }

        .news-item-excerpt {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 6px;
        }

        .news-item-meta {
            display: flex;
            gap: 16px;
            font-size: 12px;
            color: var(--color-muted);
        }

        .news-item-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .sidebar-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            margin-bottom: 20px;
        }

        .sidebar-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-heading);
        }

        .sidebar-list-item {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border-light);
            font-size: 14px;
            color: var(--color-text);
            transition: color var(--transition-fast);
        }

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

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

        .sidebar-list-item .item-index {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(26, 95, 122, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            color: var(--color-primary);
        }

        /* ==================== 限时入口 ==================== */
        .flash-band {
            background: var(--color-primary-dark);
            padding: 36px 0;
            position: relative;
            overflow: hidden;
        }

        .flash-band::before {
            content: '';
            position: absolute;
            top: -30%;
            right: 20%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(196, 155, 92, 0.2) 0%, transparent 70%);
            border-radius: var(--radius-full);
        }

        .flash-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .flash-info {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .flash-title {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .flash-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }

        .countdown-timer {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .countdown-block {
            background: rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            min-width: 48px;
            text-align: center;
        }

        .countdown-number {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
        }

        .countdown-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.65);
            letter-spacing: 1px;
        }

        .countdown-separator {
            font-size: 22px;
            color: rgba(255, 255, 255, 0.5);
            font-weight: 700;
        }

        /* ==================== FAQ ==================== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            max-width: 820px;
            margin: 0 auto;
        }

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

        .faq-item:first-child {
            border-top: 1px solid var(--color-border-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 8px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--color-heading);
            transition: color var(--transition-fast);
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            font-family: inherit;
        }

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

        .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: var(--radius-full);
            background: rgba(26, 95, 122, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--color-primary);
            transition: transform var(--transition-base);
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            background: var(--color-primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 8px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding-bottom: 20px;
        }

        .faq-answer p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            margin-bottom: 0;
        }

        /* ==================== CTA ==================== */
        .cta-section {
            background: linear-gradient(135deg, #1A3B4C 0%, var(--color-primary) 50%, var(--color-primary-dark) 100%);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: var(--radius-full);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            right: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(196, 155, 92, 0.2) 0%, transparent 70%);
            border-radius: var(--radius-full);
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .cta-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

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

        .cta-button-group .btn-accent {
            box-shadow: 0 6px 24px rgba(196, 155, 92, 0.35);
        }

        .cta-button-group .btn-accent:hover {
            box-shadow: 0 8px 30px rgba(196, 155, 92, 0.45);
        }

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

        .cta-button-group .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: #142E3A;
            padding: 48px 0 24px;
            color: var(--color-footer-text);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
        }

        .footer-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .footer-brand-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.6;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }

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

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

        /* ==================== 响应式断点 ==================== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 24px;
            }

            .scenario-layout {
                gap: 32px;
            }

            .hero h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 40px;
                --container-padding: 16px;
                --nav-height: 60px;
            }

            .nav-menu {
                display: none;
            }

            .nav-hamburger {
                display: flex;
            }

            .mobile-nav {
                display: block;
            }

            .hero {
                min-height: auto;
                padding: 100px 0 50px;
            }

            .hero h1 {
                font-size: 22px;
                line-height: 1.3;
            }

            .hero-desc {
                font-size: 15px;
                line-height: 1.7;
            }

            .hero-avatar {
                width: 56px;
                height: 56px;
                font-size: 22px;
            }

            .hero-brand-name {
                font-size: 17px;
            }

            .hero-stats-badges {
                gap: 6px;
            }

            .hero-stat-badge {
                padding: 4px 10px;
                font-size: 12px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .feature-card {
                padding: 24px 20px;
            }

            .scenario-layout {
                flex-direction: column;
                gap: 24px;
            }

            .scenario-image .image-float-badge {
                bottom: -12px;
                right: 12px;
                padding: 8px 14px;
                font-size: 12px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .stat-number {
                font-size: 26px;
            }

            .stat-label {
                font-size: 12px;
            }

            .testimonials-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .news-layout {
                flex-direction: column;
                gap: 24px;
            }

            .news-sidebar {
                position: static;
                width: 100%;
            }

            .news-item-thumb {
                width: 90px;
                height: 68px;
            }

            .flash-content {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }

            .countdown-block {
                min-width: 40px;
                padding: 6px 8px;
            }

            .countdown-number {
                font-size: 18px;
            }

            .cta-title {
                font-size: 22px;
            }

            .cta-desc {
                font-size: 14px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .section-title {
                font-size: 22px;
            }

            .section-header {
                margin-bottom: 28px;
            }

            .btn {
                padding: 12px 20px;
                font-size: 15px;
                min-height: 42px;
            }

            .btn-lg {
                padding: 14px 24px;
                font-size: 16px;
                min-height: 48px;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 4px;
            }

            .topics-cloud {
                gap: 8px;
            }

            .topic-tag {
                padding: 8px 16px;
                font-size: 13px;
            }

            .breadcrumb {
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --container-padding: 12px;
                --section-gap: 32px;
            }

            .hero {
                padding: 88px 0 40px;
            }

            .hero h1 {
                font-size: 20px;
            }

            .hero-content {
                gap: 16px;
            }

            .hero-brand-row {
                gap: 10px;
            }

            .hero-avatar {
                width: 48px;
                height: 48px;
                font-size: 18px;
            }

            .hero-brand-name {
                font-size: 15px;
            }

            .hero-stat-badge {
                font-size: 11px;
                padding: 4px 8px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .stat-block {
                padding: 14px 10px;
            }

            .stat-number {
                font-size: 22px;
            }

            .news-item {
                flex-direction: column;
                gap: 10px;
                padding: 14px 0;
            }

            .news-item-thumb {
                width: 100%;
                height: 140px;
                border-radius: var(--radius-sm);
            }

            .news-item-title {
                font-size: 15px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .cta-title {
                font-size: 20px;
            }

            .cta-desc {
                font-size: 13px;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .hero-cta-group {
                width: 100%;
            }

            .hero-cta-group .btn {
                width: 100%;
            }

            .countdown-timer {
                flex-wrap: wrap;
                gap: 4px;
            }

            .countdown-block {
                min-width: 36px;
                padding: 5px 6px;
            }

            .countdown-number {
                font-size: 16px;
            }

            .countdown-separator {
                font-size: 16px;
            }

            .flash-title {
                font-size: 16px;
            }

            .section-title {
                font-size: 20px;
            }

            .faq-question {
                font-size: 14px;
            }

            .faq-answer p {
                font-size: 14px;
            }
        }