/* roulang page: index */
:root {
            --primary: #0F766E;
            --primary-hover: #0d655e;
            --primary-light: #10B981;
            --primary-glow: rgba(16, 185, 129, 0.15);
            --secondary-dark: #334155;
            --accent-amber: #D97706;
            --accent-amber-light: #F59E0B;
            --bg-body: #F8FAFC;
            --bg-card: #FFFFFF;
            --bg-subtle: #F1F5F9;
            --bg-dark: #0B0F17;
            --bg-dark-card: #111827;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --text-on-dark: #F8FAFC;
            --border-light: #E2E8F0;
            --border-dark: #1E293B;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
            --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.03);
            --container-max: 1280px;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.2s ease;
        }

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

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

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

        /* 顶部全局微型工具条 */
        .topbar {
            background-color: #0b1118;
            color: #94A3B8;
            font-size: 0.8125rem;
            border-bottom: 1px solid #1E293B;
            padding: 6px 0;
        }
        .topbar-flex {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar-left, .topbar-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .topbar-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .topbar-badge {
            background: rgba(16, 185, 129, 0.2);
            color: #10B981;
            padding: 2px 8px;
            border-radius: var(--radius-sm);
            font-size: 0.75rem;
            font-weight: 500;
        }

        /* 全局双层吸顶导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-heading);
            letter-spacing: -0.02em;
        }
        .brand-icon-box {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, #059669 100%);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            box-shadow: 0 2px 6px rgba(15, 118, 110, 0.3);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }
        .nav-link {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-heading);
            padding: 8px 0;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: width 0.25s ease;
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            font-size: 0.9375rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
            box-shadow: 0 2px 4px rgba(15, 118, 110, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 10px rgba(15, 118, 110, 0.35);
        }
        .btn-outline {
            background-color: transparent;
            border: 1px solid var(--border-light);
            color: var(--text-heading);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background-color: rgba(15, 118, 110, 0.04);
        }
        .btn-sm {
            padding: 6px 14px;
            font-size: 0.8125rem;
        }
        .btn-amber {
            background-color: var(--accent-amber);
            color: #ffffff;
        }
        .btn-amber:hover {
            background-color: #b45309;
            transform: translateY(-1px);
        }

        /* 移动端菜单按钮 */
        .mobile-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border-light);
            padding: 8px;
            border-radius: var(--radius-sm);
            color: var(--text-heading);
        }

        /* 板块公用规范 */
        .section-block {
            padding: 88px 0;
            position: relative;
        }
        .section-block-dark {
            background-color: var(--bg-dark);
            color: var(--text-on-dark);
        }
        .section-block-alt {
            background-color: #F1F5F9;
        }
        .section-header {
            margin-bottom: 56px;
            text-align: center;
        }
        .section-header-left {
            text-align: left;
            margin-bottom: 40px;
        }
        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.8125rem;
            font-weight: 600;
            margin-bottom: 14px;
            border: 1px solid rgba(15, 118, 110, 0.2);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .section-badge-dark {
            background: rgba(16, 185, 129, 0.15);
            color: var(--primary-light);
            border-color: rgba(16, 185, 129, 0.3);
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: -0.025em;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .section-block-dark .section-title {
            color: #FFFFFF;
        }
        .section-desc {
            font-size: 1.0625rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.75;
        }
        .section-header-left .section-desc {
            margin-left: 0;
        }
        .section-block-dark .section-desc {
            color: #94A3B8;
        }

        /* 1. 首屏轮播与雇主亮点区 (Hero Carousel + Talent Track) */
        .hero-section {
            position: relative;
            background-color: #080D14;
            color: #FFFFFF;
            overflow: hidden;
            min-height: 680px;
            display: flex;
            align-items: center;
        }
        .hero-carousel {
            position: relative;
            width: 100%;
            height: 100%;
        }
        .hero-slide {
            display: none;
            opacity: 0;
            transition: opacity 0.6s ease-in-out;
            padding: 80px 0;
        }
        .hero-slide.active {
            display: block;
            opacity: 1;
        }
        .hero-bg-cover {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.22;
            z-index: 1;
        }
        .hero-grid-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: linear-gradient(rgba(15, 118, 110, 0.15) 1px, transparent 1px),
                              linear-gradient(90deg, rgba(15, 118, 110, 0.15) 1px, transparent 1px);
            background-size: 48px 48px;
            z-index: 2;
            pointer-events: none;
        }
        .hero-content-wrapper {
            position: relative;
            z-index: 3;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }
        .hero-main h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 24px;
            color: #FFFFFF;
        }
        .hero-highlight {
            background: linear-gradient(120deg, #10B981, #34D399);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-summary {
            font-size: 1.125rem;
            color: #CBD5E1;
            margin-bottom: 36px;
            line-height: 1.8;
            max-width: 680px;
        }
        .hero-btns {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .hero-indicators {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .hero-dot {
            width: 32px;
            height: 4px;
            background: rgba(255, 255, 255, 0.25);
            border-radius: 2px;
            cursor: pointer;
            transition: all 0.3s;
        }
        .hero-dot.active {
            width: 48px;
            background: #10B981;
        }
        /* 雇主技术团队亮点小卡 */
        .hero-card-side {
            background: rgba(17, 24, 39, 0.75);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }
        .hero-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-card-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: #F8FAFC;
        }
        .talent-badge {
            background: rgba(217, 119, 6, 0.2);
            color: #F59E0B;
            padding: 2px 10px;
            border-radius: var(--radius-sm);
            font-size: 0.75rem;
            font-weight: 600;
            border: 1px solid rgba(217, 119, 6, 0.3);
        }
        .hero-job-item {
            padding: 12px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .hero-job-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .hero-job-name {
            font-size: 0.875rem;
            font-weight: 600;
            color: #E2E8F0;
        }
        .hero-job-desc {
            font-size: 0.75rem;
            color: #94A3B8;
            margin-top: 2px;
        }
        .hero-job-link {
            font-size: 0.8125rem;
            color: #10B981;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .hero-job-link:hover {
            color: #34D399;
        }

        /* 2. 品牌与底层核心架构介绍区 (Brand & Architecture) */
        .arch-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .arch-diagram {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-md);
        }
        .arch-layer {
            background: var(--bg-subtle);
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .arch-layer:last-child {
            margin-bottom: 0;
        }
        .arch-layer-name {
            font-weight: 700;
            font-size: 0.9375rem;
            color: var(--text-heading);
        }
        .arch-layer-tech {
            font-size: 0.8125rem;
            color: var(--text-muted);
            font-family: monospace;
        }
        .arch-metric-list {
            list-style: none;
            margin: 24px 0 32px;
        }
        .arch-metric-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 0.9375rem;
            color: var(--text-body);
        }
        .arch-metric-icon {
            color: var(--primary);
            flex-shrink: 0;
            margin-top: 3px;
        }

        /* 3. 核心优势网格区 (Core Strengths - 6 cards) */
        .strengths-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .strength-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            position: relative;
        }
        .strength-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
            box-shadow: 0 12px 24px -6px rgba(15, 118, 110, 0.12);
        }
        .strength-icon-box {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .strength-title {
            font-size: 1.1875rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }
        .strength-desc {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 4. 热门与核心产品矩阵区 (Product Suite - 3 cards) */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .product-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            transition: all 0.25s ease;
        }
        .product-card.featured {
            border: 2px solid var(--primary);
            position: relative;
            box-shadow: 0 10px 25px -5px rgba(15, 118, 110, 0.18);
        }
        .product-badge-top {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--primary);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: var(--radius-sm);
            z-index: 5;
        }
        .product-thumb {
            height: 180px;
            overflow: hidden;
            position: relative;
            background: #0f172a;
        }
        .product-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .product-card:hover .product-thumb img {
            transform: scale(1.05);
        }
        .product-body {
            padding: 28px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .product-ver {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            font-family: monospace;
            margin-bottom: 6px;
        }
        .product-name {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }
        .product-summary {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.65;
        }
        .product-spec-list {
            list-style: none;
            margin-bottom: 24px;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
            font-size: 0.8125rem;
        }
        .product-spec-item {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
            color: var(--text-body);
        }
        .product-spec-label {
            color: var(--text-muted);
        }
        .product-btn-box {
            margin-top: auto;
        }

        /* 5. 交互式功能矩阵与操作演练区 (Feature Workflow & Demo) */
        .workflow-layout {
            display: grid;
            grid-template-columns: 360px 1fr;
            gap: 36px;
            align-items: start;
        }
        .workflow-tabs {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .workflow-tab-btn {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: left;
            transition: all 0.2s ease;
        }
        .workflow-tab-btn.active {
            border-color: var(--primary);
            background: rgba(15, 118, 110, 0.04);
            border-left: 5px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .workflow-tab-step {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.05em;
            margin-bottom: 4px;
        }
        .workflow-tab-heading {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .workflow-tab-sub {
            font-size: 0.8125rem;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .workflow-stage-view {
            background: #0B1118;
            border: 1px solid #1E293B;
            border-radius: var(--radius-lg);
            padding: 32px;
            color: #F8FAFC;
            box-shadow: var(--shadow-lg);
            min-height: 440px;
            position: relative;
        }
        .terminal-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid #1E293B;
            padding-bottom: 14px;
            margin-bottom: 24px;
        }
        .terminal-dots {
            display: flex;
            gap: 6px;
        }
        .t-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }
        .t-red { background: #EF4444; }
        .t-yellow { background: #F59E0B; }
        .t-green { background: #10B981; }
        .terminal-title {
            font-family: monospace;
            font-size: 0.8125rem;
            color: #94A3B8;
        }
        .console-code {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            font-size: 0.875rem;
            color: #34D399;
            line-height: 1.7;
            background: #06090e;
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid #1E293B;
            overflow-x: auto;
        }
        .console-line-dim { color: #64748B; }
        .console-line-warn { color: #FBBF24; }
        .console-line-info { color: #38BDF8; }

        /* 6. 深色硬核工程理念与技术基石区 (Engineering Philosophy) */
        .philosophy-banner {
            position: relative;
            background: #070B10;
            padding: 96px 0;
            color: #FFFFFF;
            overflow: hidden;
            border-top: 1px solid #1E293B;
            border-bottom: 1px solid #1E293B;
        }
        .philosophy-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.18;
            pointer-events: none;
        }
        .philosophy-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 880px;
            margin: 0 auto;
        }
        .philosophy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 56px;
            text-align: left;
        }
        .phil-card {
            background: rgba(17, 24, 39, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 28px;
            backdrop-filter: blur(8px);
        }
        .phil-num {
            font-size: 1.75rem;
            font-weight: 800;
            color: #10B981;
            margin-bottom: 10px;
            font-family: monospace;
        }
        .phil-title {
            font-size: 1.0625rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }
        .phil-desc {
            font-size: 0.875rem;
            color: #94A3B8;
            line-height: 1.65;
        }

        /* 7. 行业应用场景方案区 (Application Scenarios - 4 cards) */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .scenario-img {
            height: 160px;
            overflow: hidden;
        }
        .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }
        .scenario-card:hover .scenario-img img {
            transform: scale(1.05);
        }
        .scenario-info {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .scenario-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }
        .scenario-desc {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .scenario-tags {
            margin-top: auto;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .tag-pill {
            background: var(--bg-subtle);
            color: var(--text-body);
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: var(--radius-sm);
        }

        /* 8. 用户落地故事与流片案例区 (Customer Case Stories) */
        .case-stack {
            display: flex;
            flex-direction: column;
            gap: 40px;
        }
        .case-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
        }
        .case-row.reverse {
            grid-template-columns: 1fr 1fr;
            direction: rtl;
        }
        .case-row.reverse > * {
            direction: ltr;
        }
        .case-media {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            height: 280px;
        }
        .case-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-client {
            font-size: 0.8125rem;
            color: var(--primary);
            font-weight: 700;
            letter-spacing: 0.05em;
            margin-bottom: 8px;
        }
        .case-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .case-desc {
            font-size: 0.9375rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .case-stats {
            display: flex;
            gap: 24px;
        }
        .case-stat-item {
            border-left: 3px solid var(--primary);
            padding-left: 12px;
        }
        .case-stat-val {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1;
            margin-bottom: 4px;
        }
        .case-stat-lab {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 9. 关键性能数据统计指标条与基准榜单 (Metric Counters & Benchmark) */
        .metric-band {
            background: linear-gradient(135deg, #09121E 0%, #061A19 100%);
            border-top: 1px solid #1E293B;
            border-bottom: 1px solid #1E293B;
            padding: 64px 0;
            color: #FFFFFF;
        }
        .metric-counters-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .counter-item {
            padding: 16px;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
        }
        .counter-item:last-child {
            border-right: none;
        }
        .counter-val {
            font-size: 3rem;
            font-weight: 900;
            color: #10B981;
            line-height: 1.1;
            font-family: ui-monospace, monospace;
            margin-bottom: 8px;
        }
        .counter-unit {
            font-size: 1.25rem;
            font-weight: 600;
            color: #34D399;
            margin-left: 4px;
        }
        .counter-title {
            font-size: 1rem;
            font-weight: 700;
            color: #F8FAFC;
            margin-bottom: 6px;
        }
        .counter-note {
            font-size: 0.8125rem;
            color: #94A3B8;
        }

        /* 基准榜单微型表格 */
        .benchmark-box {
            margin-top: 48px;
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 24px;
        }
        .benchmark-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: #F8FAFC;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .benchmark-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.875rem;
        }
        .benchmark-table th, .benchmark-table td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .benchmark-table th {
            color: #94A3B8;
            font-weight: 600;
        }
        .benchmark-table td {
            color: #E2E8F0;
        }
        .score-highlight {
            color: #10B981;
            font-weight: 700;
        }

        /* 10. 商业授权与企业部署方案区 (Pricing & Deployment) */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            align-items: stretch;
        }
        .pricing-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            display: flex;
            flex-direction: column;
            transition: all 0.25s ease;
            box-shadow: var(--shadow-sm);
        }
        .pricing-card.premium {
            border: 2px solid var(--primary);
            position: relative;
            box-shadow: 0 12px 28px -6px rgba(15, 118, 110, 0.18);
            transform: translateY(-8px);
        }
        .pricing-head-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 20px;
            letter-spacing: 0.05em;
        }
        .plan-name {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .plan-desc {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            min-height: 48px;
        }
        .plan-price-box {
            margin-bottom: 24px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-light);
        }
        .plan-price-label {
            font-size: 0.8125rem;
            color: var(--text-muted);
        }
        .plan-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-heading);
        }
        .plan-feature-list {
            list-style: none;
            margin-bottom: 32px;
            flex-grow: 1;
        }
        .plan-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.875rem;
            color: var(--text-body);
            margin-bottom: 12px;
        }
        .plan-check {
            color: var(--primary);
            flex-shrink: 0;
            margin-top: 3px;
        }

        /* 11. 行业同行与工程师口碑评价墙 (Testimonials & Reviews) */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .review-quote {
            font-size: 0.9375rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 24px;
            position: relative;
        }
        .review-author {
            display: flex;
            align-items: center;
            gap: 14px;
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
        }
        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #ffffff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }
        .author-name {
            font-size: 0.9375rem;
            font-weight: 700;
            color: var(--text-heading);
        }
        .author-role {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 12. 行业前沿动态与EDA软件资讯内嵌区 (News & Insights) */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .news-img {
            height: 180px;
            overflow: hidden;
        }
        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .news-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .news-snippet {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .news-expand-btn {
            margin-top: auto;
            color: var(--primary);
            font-size: 0.875rem;
            font-weight: 600;
            background: none;
            padding: 0;
            text-align: left;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 13. 服务保障与SLA承诺条 (SLA & Assurance Bar) */
        .sla-bar {
            background: #F1F5F9;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 36px 0;
        }
        .sla-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .sla-item {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .sla-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            flex-shrink: 0;
        }
        .sla-title {
            font-size: 0.9375rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 2px;
        }
        .sla-desc {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 14. 常见技术问答 FAQ 手风琴区 (Interactive Accordion) */
        .faq-accordion-box {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.2s;
        }
        .faq-item:focus-within, .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: transparent;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-heading);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-arrow {
            transition: transform 0.25s ease;
            color: var(--text-muted);
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background: #F8FAFC;
            border-top: 1px solid transparent;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            border-top-color: var(--border-light);
        }
        .faq-answer-inner {
            padding: 20px 24px;
            font-size: 0.9375rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* 15. 商业试用与方案下载行动召唤区 (Final Conversion CTA) */
        .cta-box {
            background: linear-gradient(135deg, #062825 0%, #0B1728 100%);
            border-radius: var(--radius-lg);
            padding: 72px 48px;
            color: #FFFFFF;
            text-align: center;
            border: 1px solid #1E293B;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-box-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.12;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 18px;
            line-height: 1.3;
        }
        .cta-desc {
            font-size: 1.0625rem;
            color: #CBD5E1;
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .cta-btn-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* 页脚 (Footer) */
        .site-footer {
            background: #090E17;
            color: #94A3B8;
            padding-top: 72px;
            border-top: 1px solid #1E293B;
            font-size: 0.875rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 64px;
        }
        .footer-col-title {
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-link-item {
            margin-bottom: 12px;
        }
        .footer-link-item a:hover {
            color: #10B981;
        }
        .footer-contact-info {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding: 24px 0;
            font-size: 0.8125rem;
            color: #64748B;
        }
        .footer-bottom-flex {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* 模态弹窗（试用与白皮书交互） */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(4px);
            z-index: 2000;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .modal-overlay.active {
            display: flex;
        }
        .modal-container {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            width: 100%;
            max-width: 520px;
            padding: 36px;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .modal-close {
            position: absolute;
            top: 20px;
            right: 20px;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: #94A3B8;
            cursor: pointer;
        }
        .modal-title {
            font-size: 1.375rem;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .modal-subtitle {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-label {
            display: block;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .form-input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            font-family: inherit;
            font-size: 0.9375rem;
        }
        .form-input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
        }

        /* 响应式断点适配 */
        @media (max-width: 1024px) {
            .hero-content-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .strengths-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .product-grid {
                grid-template-columns: 1fr;
            }
            .pricing-card.premium {
                transform: none;
            }
            .workflow-layout {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .sla-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .counter-item {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .counter-item:last-child {
                border-bottom: none;
            }
            .metric-counters-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .topbar { display: none; }
            .mobile-toggle { display: block; }
            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: #FFFFFF;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                gap: 16px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-actions {
                display: none;
            }
            .hero-main h1 {
                font-size: 2.125rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .arch-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .strengths-grid {
                grid-template-columns: 1fr;
            }
            .case-row, .case-row.reverse {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 24px;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .metric-counters-grid {
                grid-template-columns: 1fr;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .philosophy-grid {
                grid-template-columns: 1fr;
            }
            .sla-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 48px 24px;
            }
        }