/* roulang page: index */
:root {
            --primary: #0A192F;
            --primary-light: #172a45;
            --electric-blue: #0066FF;
            --electric-hover: #0052cc;
            --accent-green: #00E599;
            --accent-green-bg: rgba(0, 229, 153, 0.1);
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --bg-dark: #0B1120;
            --text-title: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: rgba(226, 232, 240, 0.9);
            --border-dark: rgba(255, 255, 255, 0.1);
            --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 20px 30px -10px rgba(0, 0, 0, 0.1);
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 9999px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *, *::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", "Noto Sans SC", sans-serif;
            background-color: var(--bg-light);
            color: var(--text-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* 顶部通栏辅助条与导航 */
        .header-wrapper {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .top-bar {
            background-color: var(--primary);
            color: #94A3B8;
            font-size: 0.8125rem;
            padding: 0.4rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #E2E8F0;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--accent-green);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--accent-green);
        }

        .nav-main {
            padding: 0.85rem 0;
        }

        .nav-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .brand-logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--electric-blue), var(--accent-green));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 1.25rem;
            box-shadow: 0 4px 12px rgba(0, 102, 255, 0.25);
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 1.75rem;
            align-items: center;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-title);
            padding: 0.5rem 0;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--electric-blue);
        }

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

        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }

        .btn-header {
            background-color: var(--electric-blue);
            color: #ffffff;
            padding: 0.55rem 1.25rem;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(0, 102, 255, 0.25);
        }

        .btn-header:hover {
            background-color: var(--electric-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 102, 255, 0.35);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-title);
            cursor: pointer;
        }

        /* 统一 Section 基础样式 */
        .section-padding {
            padding: 5.5rem 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 3.5rem;
        }

        .section-tag {
            display: inline-block;
            background: var(--accent-green-bg);
            color: #00875A;
            font-size: 0.8125rem;
            font-weight: 700;
            padding: 0.3rem 0.85rem;
            border-radius: var(--radius-full);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 0.85rem;
            border: 1px solid rgba(0, 229, 153, 0.3);
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 1.25rem;
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* 1. Hero 板块（无大图首屏，图标矩阵 + 状态条 + 短标题） */
        .hero-section {
            background: radial-gradient(circle at 50% 0%, #172a45 0%, #0A192F 100%);
            color: #FFFFFF;
            padding: 5rem 0 4.5rem;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(0, 229, 153, 0.1) 1px, transparent 1px);
            background-size: 32px 32px;
            opacity: 0.6;
        }

        .hero-status-strip {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 0.4rem 1rem;
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            margin-bottom: 1.75rem;
            backdrop-filter: blur(8px);
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #FFFFFF 0%, #E2E8F0 60%, #00E599 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.125rem;
            color: #CBD5E1;
            max-width: 840px;
            margin: 0 auto 2.5rem;
            line-height: 1.8;
        }

        .hero-cta-group {
            display: flex;
            justify-content: center;
            gap: 1.25rem;
            margin-bottom: 3.5rem;
        }

        .btn-primary-hero {
            background: linear-gradient(135deg, var(--electric-blue), #004ecc);
            color: #FFFFFF;
            padding: 0.85rem 2.25rem;
            border-radius: var(--radius-full);
            font-size: 1rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.2);
            box-shadow: 0 10px 25px rgba(0, 102, 255, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary-hero:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 30px rgba(0, 102, 255, 0.5);
            background: linear-gradient(135deg, #0052cc, #003fa3);
        }

        .btn-secondary-hero {
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            padding: 0.85rem 2rem;
            border-radius: var(--radius-full);
            font-size: 1rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(8px);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary-hero:hover {
            background: rgba(255, 255, 255, 0.18);
            transform: translateY(-3px);
        }

        .hero-icon-matrix {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            max-width: 1080px;
            margin: 0 auto;
        }

        .hero-matrix-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.25rem;
            text-align: center;
            transition: var(--transition);
        }

        .hero-matrix-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(0, 229, 153, 0.3);
            transform: translateY(-4px);
        }

        .hero-matrix-icon {
            font-size: 1.75rem;
            color: var(--accent-green);
            margin-bottom: 0.75rem;
        }

        .hero-matrix-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 0.4rem;
        }

        .hero-matrix-desc {
            font-size: 0.85rem;
            color: #94A3B8;
            line-height: 1.5;
        }

        /* 2. 行业痛点与技术概览 (Intro Section) */
        .section-intro {
            background-color: var(--bg-white);
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .intro-img-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .intro-img-badge {
            position: absolute;
            bottom: 1.5rem;
            left: 1.5rem;
            background: rgba(10, 25, 47, 0.85);
            backdrop-filter: blur(8px);
            color: #FFFFFF;
            padding: 1rem 1.25rem;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .intro-badge-val {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-green);
        }

        .intro-badge-lbl {
            font-size: 0.85rem;
            color: #CBD5E1;
        }

        .intro-feature-list {
            list-style: none;
            margin-top: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .intro-feature-item {
            display: flex;
            gap: 1rem;
        }

        .intro-feature-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--accent-green-bg);
            color: #00875A;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* 3. 核心优势矩阵 (6 卡片网格) */
        .section-features {
            background-color: var(--bg-light);
        }

        .grid-3x2 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2.25rem 1.75rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(0, 102, 255, 0.3);
        }

        .feature-icon-box {
            width: 54px;
            height: 54px;
            border-radius: 12px;
            background: rgba(0, 102, 255, 0.08);
            color: var(--electric-blue);
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }

        .feature-card-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 0.75rem;
        }

        .feature-card-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 4. 热门解决方案 (Hot Solutions - 3 重点卡片) */
        .section-solutions {
            background-color: var(--bg-white);
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .sol-card {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .sol-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .sol-card-media {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

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

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

        .sol-tag-float {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: rgba(10, 25, 47, 0.85);
            color: var(--accent-green);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.3rem 0.75rem;
            border-radius: var(--radius-full);
            backdrop-filter: blur(6px);
        }

        .sol-card-body {
            padding: 1.75rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .sol-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 0.85rem;
        }

        .sol-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 1.25rem;
            flex: 1;
        }

        .sol-meta-list {
            list-style: none;
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 5. 科技理念与数字底座 (深色对比区) */
        .section-dark-concept {
            background: var(--bg-dark);
            color: #FFFFFF;
            padding: 6rem 0;
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }

        .dark-concept-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .dark-title {
            color: #FFFFFF;
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 1.25rem;
        }

        .dark-desc {
            color: #94A3B8;
            font-size: 1.05rem;
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        .dark-metrics-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .dark-metric-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 1.5rem;
        }

        .dark-metric-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-green);
            margin-bottom: 0.25rem;
        }

        .dark-metric-label {
            font-size: 0.9rem;
            color: #CBD5E1;
        }

        /* 6. 方法步骤与落地流程 */
        .section-workflow {
            background-color: var(--bg-light);
        }

        .workflow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }

        .step-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            position: relative;
            box-shadow: var(--shadow-sm);
        }

        .step-num {
            font-size: 2.5rem;
            font-weight: 900;
            color: rgba(0, 102, 255, 0.15);
            line-height: 1;
            margin-bottom: 1rem;
        }

        .step-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 0.65rem;
        }

        .step-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 7. 合集目录区 (版式蓝图硬性) */
        .section-collection {
            background-color: var(--bg-white);
        }

        .collection-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .collection-card {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            background: var(--bg-light);
            padding: 1.75rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .collection-card:hover {
            border-color: var(--electric-blue);
            background: #FFFFFF;
            box-shadow: var(--shadow-md);
        }

        .col-badge {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--electric-blue);
            background: rgba(0, 102, 255, 0.08);
            padding: 0.2rem 0.6rem;
            border-radius: var(--radius-full);
            display: inline-block;
            margin-bottom: 0.75rem;
        }

        .col-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 0.6rem;
        }

        .col-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1.25rem;
        }

        .col-footer-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-title);
            font-weight: 600;
            border-top: 1px dashed var(--border-color);
            padding-top: 1rem;
        }

        /* 8. 关键数据指标条 (Metrics & Stats Bar) */
        .section-stats {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #FFFFFF;
            padding: 4.5rem 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }

        .stat-item {
            padding: 1rem;
        }

        .stat-val {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-green);
            line-height: 1.1;
            margin-bottom: 0.5rem;
            font-feature-settings: "tnum";
        }

        .stat-name {
            font-size: 1.05rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 0.25rem;
        }

        .stat-detail {
            font-size: 0.85rem;
            color: #94A3B8;
        }

        /* 9. 客户故事与实战案例 (User Stories) */
        .section-stories {
            background-color: var(--bg-white);
        }

        .story-card-horizontal {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 2rem;
            padding: 1rem;
        }

        .story-img-frame {
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 100%;
            min-height: 280px;
        }

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

        .story-content-wrap {
            padding: 1.5rem 2rem 1.5rem 1rem;
        }

        .story-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 0.85rem;
        }

        .story-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .story-stats-row {
            display: flex;
            gap: 2rem;
        }

        .story-stat-num {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--electric-blue);
        }

        .story-stat-lbl {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 10. 新闻与体育科技资讯摘要 */
        .section-news {
            background-color: var(--bg-light);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 102, 255, 0.3);
        }

        .news-date-tag {
            font-size: 0.8rem;
            color: var(--electric-blue);
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .news-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 0.75rem;
            line-height: 1.4;
        }

        .news-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 1.25rem;
        }

        /* 11. FAQ 常见问题手风琴 */
        .section-faq {
            background-color: var(--bg-white);
        }

        .faq-container {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            background: var(--bg-white);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            width: 100%;
            padding: 1.25rem 1.5rem;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-title);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        .faq-icon {
            font-size: 1rem;
            color: var(--electric-blue);
            transition: transform 0.3s ease;
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease;
            background-color: var(--bg-light);
        }

        .faq-body-content {
            padding: 1.25rem 1.5rem;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-body {
            max-height: 300px;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* 12. 转化行动号召区 (Final CTA Box) */
        .section-final-cta {
            background: radial-gradient(circle at 50% 50%, #172a45 0%, #0A192F 100%);
            color: #FFFFFF;
            padding: 5.5rem 0;
            position: relative;
        }

        .cta-card-box {
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 3.5rem 2.5rem;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 1rem;
        }

        .cta-desc {
            font-size: 1.05rem;
            color: #CBD5E1;
            max-width: 650px;
            margin: 0 auto 2.5rem;
            line-height: 1.7;
        }

        .cta-form {
            display: flex;
            max-width: 540px;
            margin: 0 auto;
            gap: 0.75rem;
        }

        .cta-input {
            flex: 1;
            padding: 0.85rem 1.25rem;
            border-radius: var(--radius-full);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition);
        }

        .cta-input:focus {
            border-color: var(--accent-green);
            background: rgba(255, 255, 255, 0.15);
        }

        .cta-submit-btn {
            background: var(--accent-green);
            color: var(--primary);
            font-weight: 700;
            padding: 0.85rem 1.75rem;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .cta-submit-btn:hover {
            background: #00cc88;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 229, 153, 0.3);
        }

        /* 统一页脚 (Footer) */
        .footer-wrapper {
            background: #070D18;
            color: #94A3B8;
            padding: 4.5rem 0 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 3rem;
            margin-bottom: 3.5rem;
        }

        .footer-brand-title {
            color: #FFFFFF;
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand-desc {
            line-height: 1.75;
            margin-bottom: 1.5rem;
            color: #64748B;
        }

        .footer-col-title {
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .footer-link-item a:hover {
            color: var(--accent-green);
            padding-left: 4px;
        }

        .footer-contact-item {
            display: flex;
            gap: 10px;
            margin-bottom: 0.75rem;
            line-height: 1.5;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8125rem;
            color: #475569;
        }

        /* 响应式媒体查询断点 */
        @media (max-width: 1024px) {
            .hero-icon-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3x2, .solutions-grid, .collection-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .workflow-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 2.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .top-bar {
                display: none;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #FFFFFF;
                flex-direction: column;
                padding: 1.5rem;
                box-shadow: var(--shadow-lg);
                border-top: 1px solid var(--border-color);
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .btn-header {
                display: none;
            }
            .hero-title {
                font-size: 2.25rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .intro-grid, .dark-concept-grid, .story-card-horizontal {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .grid-3x2, .solutions-grid, .collection-grid, .news-grid, .hero-icon-matrix, .workflow-steps {
                grid-template-columns: 1fr;
            }
            .cta-form {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
        }