/* roulang page: index */
:root {
            --primary: #0F2C59;
            --primary-hover: #0B2244;
            --primary-light: #EBF3FC;
            --secondary: #0284C7;
            --secondary-hover: #0369A1;
            --accent: #38BDF8;
            --dark: #0B192C;
            --text-main: #0F172A;
            --text-regular: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --bg-body: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-light: #F1F5F9;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 4px rgba(15, 44, 89, 0.04);
            --shadow-card: 0 10px 25px -5px rgba(15, 44, 89, 0.06), 0 8px 10px -6px rgba(15, 44, 89, 0.04);
            --shadow-hover: 0 20px 30px -10px rgba(15, 44, 89, 0.12), 0 10px 12px -5px rgba(15, 44, 89, 0.06);
            --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --container-width: 1240px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg-body);
            color: var(--text-regular);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button, input, select, textarea {
            font: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 顶部功能栏 */
        .top-utility-bar {
            background-color: #EEF2F6;
            border-bottom: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
            line-height: 38px;
        }
        .top-utility-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-tags {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 500;
        }
        .top-badge::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: #10B981;
        }
        .top-contact {
            display: flex;
            gap: 20px;
        }
        .top-contact a:hover {
            color: var(--secondary);
        }

        /* 统一主导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 76px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .logo-symbol {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 18px;
            box-shadow: 0 4px 10px rgba(15, 44, 89, 0.2);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            position: relative;
            padding: 6px 0;
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--secondary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary);
            transition: var(--transition);
        }
        .nav-links a:hover::after, .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta-btn {
            background-color: var(--primary);
            color: #ffffff !important;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 12px rgba(15, 44, 89, 0.15);
        }
        .nav-cta-btn:hover {
            background-color: var(--secondary);
            box-shadow: 0 6px 16px rgba(2, 132, 199, 0.25);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
        }

        /* 模块基础样式 */
        .section-padding {
            padding: 96px 0;
            position: relative;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-tint {
            background-color: #F1F5F9;
        }
        .section-dark {
            background-color: var(--dark);
            color: #F8FAFC;
        }
        .section-header {
            max-width: 780px;
            margin: 0 auto 56px auto;
            text-align: center;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--secondary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 12px;
            background: rgba(2, 132, 199, 0.08);
            padding: 4px 14px;
            border-radius: 20px;
        }
        .section-dark .section-eyebrow {
            background: rgba(56, 189, 248, 0.15);
            color: var(--accent);
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-dark .section-title {
            color: #FFFFFF;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-dark .section-desc {
            color: #94A3B8;
        }

        /* 按钮与卡片通用 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(15, 44, 89, 0.2);
        }
        .btn-primary:hover {
            background-color: var(--secondary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(2, 132, 199, 0.3);
        }
        .btn-secondary {
            background-color: #ffffff;
            color: var(--primary);
            border-color: var(--border-color);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background-color: var(--bg-light);
            color: var(--primary);
        }
        .btn-outline-white {
            background-color: transparent;
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.3);
        }
        .btn-outline-white:hover {
            background-color: #ffffff;
            color: var(--dark);
        }
        .card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(2, 132, 199, 0.3);
        }

        /* 1. 首屏工程级轮播区 */
        #hero-carousel {
            position: relative;
            background-color: var(--dark);
            color: #ffffff;
            overflow: hidden;
            min-height: 640px;
            display: flex;
            align-items: center;
        }
        .hero-slide {
            position: absolute;
            inset: 0;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.8s ease-in-out, visibility 0.8s ease;
            background-size: cover;
            background-position: center;
        }
        .hero-slide.active {
            opacity: 1;
            visibility: visible;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 25, 44, 0.94) 0%, rgba(15, 44, 89, 0.82) 55%, rgba(11, 25, 44, 0.6) 100%);
        }
        .hero-container {
            position: relative;
            z-index: 2;
            padding: 100px 24px;
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
        }
        .hero-badge-wrap {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 24px;
            font-size: 14px;
            color: var(--accent);
        }
        .hero-title {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.8px;
            max-width: 860px;
            margin-bottom: 24px;
            color: #FFFFFF;
        }
        .hero-title span {
            color: var(--accent);
            text-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
        }
        .hero-desc {
            font-size: 18px;
            line-height: 1.8;
            color: #E2E8F0;
            max-width: 760px;
            margin-bottom: 36px;
        }
        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 18px;
            margin-bottom: 48px;
        }
        .hero-metrics-pill {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 820px;
            background: rgba(15, 44, 89, 0.5);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 18px 24px;
        }
        .hero-metric-item strong {
            display: block;
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            font-family: monospace, sans-serif;
        }
        .hero-metric-item span {
            font-size: 12px;
            color: #94A3B8;
        }
        .carousel-controls {
            position: absolute;
            bottom: 30px;
            right: 48px;
            z-index: 10;
            display: flex;
            gap: 12px;
        }
        .carousel-btn {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .carousel-btn:hover {
            background: var(--secondary);
            border-color: var(--secondary);
        }

        /* 2. 行业痛点区 */
        .challenges-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .challenge-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 36px 30px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .challenge-card:hover {
            border-color: #EF4444;
            transform: translateY(-4px);
            box-shadow: 0 15px 30px rgba(239, 68, 68, 0.08);
        }
        .challenge-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background-color: #FEF2F2;
            color: #EF4444;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 20px;
        }
        .challenge-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }
        .challenge-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 3. 解决方案概览区 */
        .overview-layout {
            display: grid;
            grid-template-columns: 1.05fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .overview-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .overview-visual img {
            width: 100%;
            height: 460px;
            object-fit: cover;
        }
        .overview-tag-float {
            position: absolute;
            bottom: 24px;
            left: 24px;
            background: rgba(15, 44, 89, 0.9);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            color: #ffffff;
        }
        .overview-tag-float span {
            display: block;
            font-size: 13px;
            color: var(--accent);
        }
        .overview-tag-float strong {
            font-size: 16px;
        }
        .overview-content h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.35;
            margin-bottom: 20px;
        }
        .overview-content p {
            font-size: 16px;
            color: var(--text-regular);
            margin-bottom: 24px;
            line-height: 1.75;
        }
        .spec-checklist {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-bottom: 32px;
        }
        .spec-checklist li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }
        .spec-checklist li::before {
            content: "✓";
            color: #10B981;
            font-weight: bold;
            background: #E8FDF3;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
        }

        /* 4. 核心制造优势矩阵区 (6卡片) */
        .strengths-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .strength-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            transition: var(--transition);
        }
        .strength-card:hover {
            border-color: var(--secondary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .strength-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--secondary);
            font-family: monospace;
            margin-bottom: 12px;
        }
        .strength-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .strength-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 5. 热门工艺产品矩阵区 (3卡片) */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .product-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .product-media {
            height: 220px;
            position: relative;
            overflow: hidden;
        }
        .product-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .product-card:hover .product-media img {
            transform: scale(1.06);
        }
        .product-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #ffffff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
        }
        .product-body {
            padding: 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .product-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .product-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 20px;
            flex-grow: 1;
        }
        .product-specs {
            background-color: var(--bg-light);
            padding: 14px;
            border-radius: var(--radius-sm);
            margin-bottom: 20px;
            font-size: 13px;
        }
        .product-spec-row {
            display: flex;
            justify-content: space-between;
            margin-bottom: 6px;
        }
        .product-spec-row:last-child {
            margin-bottom: 0;
        }
        .product-spec-row span {
            color: var(--text-muted);
        }
        .product-spec-row strong {
            color: var(--text-main);
        }

        /* 6. 高对比深色微结构理念区 */
        #engineering-philosophy {
            position: relative;
            background-size: cover;
            background-position: center;
        }
        .dark-philosophy-overlay {
            position: absolute;
            inset: 0;
            background: rgba(11, 25, 44, 0.93);
        }
        .philosophy-wrap {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }
        .philosophy-text h2 {
            font-size: 34px;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.35;
            margin-bottom: 20px;
        }
        .philosophy-text p {
            font-size: 16px;
            color: #94A3B8;
            margin-bottom: 30px;
            line-height: 1.8;
        }
        .philosophy-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .phil-point-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px;
            border-radius: var(--radius-sm);
        }
        .phil-point-card h4 {
            color: var(--accent);
            font-size: 16px;
            margin-bottom: 8px;
        }
        .phil-point-card p {
            font-size: 13px;
            color: #CBD5E1;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* 7. 流片工艺步骤区 */
        .process-stepper {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-step-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 18px;
            text-align: center;
            position: relative;
            box-shadow: var(--shadow-sm);
        }
        .step-index {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px auto;
            font-weight: 700;
            font-size: 16px;
        }
        .process-step-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .process-step-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 8. 适用终端场景区 (4卡片) */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            transition: var(--transition);
        }
        .scenario-card:hover {
            border-color: var(--secondary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .scenario-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 12px;
            display: block;
        }
        .scenario-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .scenario-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 14px;
        }
        .scenario-metric {
            border-top: 1px dashed var(--border-color);
            padding-top: 12px;
            font-size: 12px;
            color: var(--text-regular);
            font-weight: 600;
        }

        /* 9. 客户量产故事区 */
        .story-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .story-image-box {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .story-image-box img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .story-content {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-card);
        }
        .story-badge {
            background: #FEF3C7;
            color: #92400E;
            font-size: 13px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 16px;
        }
        .story-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .story-content p {
            font-size: 15px;
            color: var(--text-regular);
            line-height: 1.75;
            margin-bottom: 24px;
        }
        .story-stat-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
        }
        .story-stat-val {
            font-size: 26px;
            font-weight: 800;
            color: var(--secondary);
            font-family: monospace;
        }
        .story-stat-lbl {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 10. 核心数据指标条 */
        .metrics-banner {
            background: linear-gradient(135deg, var(--primary) 0%, #082046 100%);
            color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            box-shadow: var(--shadow-card);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            text-align: center;
        }
        .metric-unit strong {
            display: block;
            font-size: 42px;
            font-weight: 800;
            color: #FFFFFF;
            font-family: monospace, sans-serif;
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .metric-unit h4 {
            font-size: 16px;
            color: var(--accent);
            margin-bottom: 6px;
            font-weight: 600;
        }
        .metric-unit p {
            font-size: 13px;
            color: #94A3B8;
        }

        /* 11. 产业链多维评价区 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .review-quote {
            font-size: 15px;
            color: var(--text-regular);
            line-height: 1.75;
            margin-bottom: 24px;
            position: relative;
        }
        .review-quote::before {
            content: "“";
            font-size: 40px;
            color: #CBD5E1;
            line-height: 1;
            display: block;
            margin-bottom: -10px;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 14px;
            border-top: 1px solid var(--border-color);
            padding-top: 18px;
        }
        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--primary);
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }
        .author-info h4 {
            font-size: 15px;
            color: var(--primary);
            font-weight: 700;
        }
        .author-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 12. 前沿资讯动态区 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .news-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .news-thumb {
            height: 190px;
            overflow: hidden;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.05);
        }
        .news-body {
            padding: 24px;
        }
        .news-date {
            font-size: 12px;
            color: var(--secondary);
            font-weight: 600;
            margin-bottom: 8px;
            display: block;
        }
        .news-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.45;
            margin-bottom: 10px;
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .news-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-link:hover {
            color: var(--secondary);
        }

        /* 13. 常见技术问题 FAQ 手风琴 */
        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-item details {
            width: 100%;
        }
        .faq-item summary {
            padding: 22px 26px;
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: background 0.2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background-color: var(--bg-light);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-light);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }
        .faq-item details[open] .faq-icon {
            transform: rotate(45deg);
            background: var(--secondary);
            color: #ffffff;
        }
        .faq-answer {
            padding: 0 26px 24px 26px;
            font-size: 15px;
            color: var(--text-regular);
            line-height: 1.75;
            border-top: 1px solid var(--bg-light);
            padding-top: 16px;
        }

        /* 14. 转化对接表单 CTA 区 */
        .cta-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
        }
        .cta-content {
            padding: 56px 48px;
        }
        .cta-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            background-color: #F8FAFC;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--secondary);
            background-color: #ffffff;
            box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
        }
        .cta-sidebar {
            background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
            padding: 56px 40px;
            color: #ffffff;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .nda-guarantee {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 24px;
            border-radius: var(--radius-md);
            margin-bottom: 24px;
        }
        .nda-guarantee h4 {
            font-size: 17px;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .nda-guarantee p {
            font-size: 13px;
            color: #CBD5E1;
            line-height: 1.65;
            margin-bottom: 0;
        }
        .direct-line {
            font-size: 14px;
            color: #94A3B8;
        }
        .direct-line strong {
            display: block;
            font-size: 20px;
            color: #ffffff;
            font-family: monospace;
            margin-top: 4px;
        }

        /* 统一页脚 */
        .site-footer {
            background-color: #0F172A;
            color: #94A3B8;
            font-size: 14px;
            padding-top: 80px;
            border-top: 1px solid #1E293B;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 60px;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-logo .logo-symbol {
            width: 32px;
            height: 32px;
            font-size: 15px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #94A3B8;
            margin-bottom: 20px;
        }
        .footer-col h4 {
            font-size: 16px;
            color: #ffffff;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--secondary);
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a:hover {
            color: #ffffff;
            padding-left: 4px;
        }
        .footer-contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact-list li {
            display: flex;
            flex-direction: column;
        }
        .footer-contact-list span {
            font-size: 12px;
            color: #64748B;
        }
        .footer-contact-list strong {
            color: #E2E8F0;
        }
        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding: 24px 0;
            font-size: 13px;
            text-align: center;
            color: #64748B;
        }
        .footer-bottom a {
            color: #94A3B8;
            margin: 0 8px;
        }
        .footer-bottom a:hover {
            color: #ffffff;
        }

        /* 响应式样式 */
        @media (max-width: 1024px) {
            .hero-title { font-size: 38px; }
            .overview-layout { grid-template-columns: 1fr; }
            .strengths-grid { grid-template-columns: repeat(2, 1fr); }
            .products-grid { grid-template-columns: 1fr; }
            .philosophy-wrap { grid-template-columns: 1fr; }
            .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
            .process-stepper { grid-template-columns: repeat(3, 1fr); }
            .story-container { grid-template-columns: 1fr; }
            .metrics-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .cta-box { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .top-utility-bar { display: none; }
            .navbar { height: 64px; }
            .mobile-toggle { display: block; }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                padding: 24px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
                border-bottom: 1px solid var(--border-color);
                display: none;
                gap: 16px;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-cta-btn { width: 100%; justify-content: center; }
            .section-padding { padding: 60px 0; }
            .section-title { font-size: 26px; }
            .hero-title { font-size: 30px; }
            .hero-metrics-pill { grid-template-columns: repeat(2, 1fr); }
            .challenges-grid { grid-template-columns: 1fr; }
            .strengths-grid { grid-template-columns: 1fr; }
            .scenarios-grid { grid-template-columns: 1fr; }
            .process-stepper { grid-template-columns: 1fr; }
            .metrics-grid { grid-template-columns: 1fr; }
            .reviews-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .cta-content { padding: 32px 20px; }
            .form-row { grid-template-columns: 1fr; }
            .cta-sidebar { padding: 32px 20px; }
        }