/* roulang page: index */
:root {
      --primary: #0A2540;
      --primary-light: #16365C;
      --accent: #FF5C00;
      --accent-hover: #E04E00;
      --grad-cyan: #00D4B2;
      --grad-blue: #0066FF;
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-dark: #0B132B;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border: rgba(148, 163, 184, 0.2);
      --border-focus: #0066FF;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 4px 12px rgba(10, 37, 64, 0.04);
      --shadow-md: 0 10px 30px -10px rgba(0, 32, 80, 0.08);
      --shadow-hover: 0 20px 40px -12px rgba(0, 102, 255, 0.16);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      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, textarea, select {
      font: inherit;
      border: none;
      outline: none;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    /* 顶栏 */
    .top-bar {
      background: var(--primary);
      color: #CBD5E1;
      font-size: 0.8125rem;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-meta-list {
      display: flex;
      gap: 20px;
      list-style: none;
    }
    .top-meta-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      transition: var(--transition);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--grad-cyan), var(--grad-blue));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.15rem;
      box-shadow: 0 4px 10px rgba(0, 102, 255, 0.25);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: var(--transition);
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 11px 24px;
      border-radius: 30px;
      font-size: 0.9375rem;
      font-weight: 600;
      color: #FFFFFF;
      background: linear-gradient(135deg, #FF6B00 0%, #FF4500 100%);
      box-shadow: 0 6px 18px rgba(255, 92, 0, 0.28);
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(255, 92, 0, 0.38);
      color: #FFFFFF;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--primary);
      margin: 5px 0;
      transition: var(--transition);
    }
    /* 斜切色块首屏 (Hero) */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, #07172A 0%, #0F2D59 100%);
      color: #FFFFFF;
      padding: 80px 0 120px;
      overflow: hidden;
    }
    .hero-section::after {
      content: '';
      position: absolute;
      bottom: -1px;
      left: 0;
      width: 100%;
      height: 80px;
      background: var(--bg-page);
      clip-path: polygon(0 100%, 100% 100%, 100% 0);
      z-index: 1;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 24px;
    }
    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 0.8125rem;
      font-weight: 600;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #E2E8F0;
      backdrop-filter: blur(8px);
    }
    .badge-pill.accent {
      background: rgba(255, 92, 0, 0.18);
      border-color: rgba(255, 92, 0, 0.4);
      color: #FFA573;
    }
    .badge-pill.cyan {
      background: rgba(0, 212, 178, 0.15);
      border-color: rgba(0, 212, 178, 0.35);
      color: #5EEAD4;
    }
    .hero-title {
      font-size: clamp(2.2rem, 3.8vw, 3.4rem);
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }
    .text-gradient {
      background: linear-gradient(120deg, #FFFFFF 30%, #38BDF8 70%, #00D4B2 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.0625rem;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 36px;
      max-width: 600px;
    }
    .hero-cta-box {
      display: flex;
      align-items: center;
      gap: 20px;
      flex-wrap: wrap;
    }
    .hero-media {
      position: relative;
    }
    .hero-img-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.16);
      background: rgba(255, 255, 255, 0.05);
    }
    .hero-img-card img {
      width: 100%;
      height: 380px;
      object-fit: cover;
      display: block;
    }
    .floating-stat-badge {
      position: absolute;
      bottom: -20px;
      left: -20px;
      background: rgba(10, 37, 64, 0.9);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(0, 212, 178, 0.3);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-hover);
      color: #fff;
    }
    .stat-badge-val {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--grad-cyan);
      line-height: 1;
      margin-bottom: 4px;
    }
    .stat-badge-desc {
      font-size: 0.75rem;
      color: #94A3B8;
    }
    /* 公共板块头 */
    .section-padding {
      padding: 88px 0;
    }
    .section-head {
      margin-bottom: 48px;
    }
    .section-head.center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .sub-tag {
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: #0066FF;
      margin-bottom: 10px;
      display: inline-block;
    }
    .section-title {
      font-size: clamp(1.75rem, 2.5vw, 2.35rem);
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.75;
    }
    /* 卡片通用 */
    .card-base {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      border: 1px solid rgba(226, 232, 240, 0.9);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      overflow: hidden;
      position: relative;
    }
    .card-base:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 102, 255, 0.3);
    }
    /* 板块2: 平台架构概览 */
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 44px;
      align-items: center;
    }
    .overview-visual {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      position: relative;
    }
    .overview-visual img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .overview-tech-specs {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 28px;
    }
    .spec-item {
      padding: 16px;
      background: #F1F5F9;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--grad-blue);
    }
    .spec-title {
      font-size: 0.8125rem;
      color: var(--text-muted);
      margin-bottom: 4px;
    }
    .spec-value {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
    }
    /* 板块3: 核心优势矩阵 (3x2) */
    .strengths-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .strength-card {
      padding: 32px 28px;
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .strength-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, rgba(0, 212, 178, 0.15), rgba(0, 102, 255, 0.15));
      color: var(--grad-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }
    .strength-card h3 {
      font-size: 1.18rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .strength-card p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
    }
    /* 板块4: 解决方案 (3联排大卡) */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .solution-card-img {
      height: 220px;
      overflow: hidden;
      position: relative;
    }
    .solution-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .card-base:hover .solution-card-img img {
      transform: scale(1.05);
    }
    .solution-body {
      padding: 28px;
    }
    .solution-body h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .solution-body p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .solution-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .solution-tag {
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 6px;
      background: #EDF2F7;
      color: #334155;
    }
    /* 板块5: 深色方法论对比 (Dark Showcase) */
    .dark-showcase {
      background: var(--bg-dark);
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
    }
    .dark-showcase .section-title {
      color: #FFFFFF;
    }
    .dark-showcase .section-desc {
      color: #94A3B8;
    }
    .dark-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .method-steps {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .method-item {
      display: flex;
      gap: 18px;
      padding: 18px;
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: var(--transition);
    }
    .method-item:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(0, 212, 178, 0.4);
    }
    .method-num {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--grad-cyan), var(--grad-blue));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: #07172A;
      flex-shrink: 0;
    }
    .method-content h4 {
      font-size: 1.0625rem;
      margin-bottom: 6px;
      color: #F8FAFC;
    }
    .method-content p {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.6;
    }
    .dark-visual {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    }
    .dark-visual img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    /* 板块6: 全链路方法步骤 (Implementation Workflow) */
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .workflow-card {
      padding: 28px 22px;
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      position: relative;
    }
    .workflow-step-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 800;
      color: var(--grad-blue);
      background: rgba(0, 102, 255, 0.08);
      padding: 4px 10px;
      border-radius: 999px;
      margin-bottom: 14px;
    }
    .workflow-card h3 {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .workflow-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* 板块7: 实效案例拆解 (Success Stories) */
    .stories-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .story-card {
      display: grid;
      grid-template-columns: 180px 1fr;
      border-radius: var(--radius-lg);
      background: #FFFFFF;
      border: 1px solid var(--border);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .story-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .story-body h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .story-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 14px;
      line-height: 1.6;
    }
    .story-metric {
      display: flex;
      align-items: baseline;
      gap: 6px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--accent);
    }
    .story-metric span {
      font-size: 0.75rem;
      color: var(--text-light);
      font-weight: 500;
    }
    /* 板块8: 关键数据统计条 (Performance Metrics) */
    .metrics-bar-section {
      background: linear-gradient(135deg, #0A2540 0%, #16365C 100%);
      color: #FFFFFF;
      padding: 56px 0;
    }
    .metrics-flex {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-block-val {
      font-size: clamp(2rem, 3.2vw, 2.85rem);
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 6px;
      background: linear-gradient(120deg, #FFFFFF, #5EEAD4);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .metric-block-label {
      font-size: 0.9375rem;
      color: #CBD5E1;
      font-weight: 500;
    }
    .metric-block-sub {
      font-size: 0.75rem;
      color: #94A3B8;
      margin-top: 4px;
    }
    /* 板块9: 客户评价与证言 (Testimonials) */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-quote {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }
    .testi-quote::before {
      content: "“";
      font-size: 2.8rem;
      line-height: 1;
      color: rgba(0, 102, 255, 0.15);
      position: absolute;
      top: -14px;
      left: -10px;
      font-family: Georgia, serif;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .testi-meta h4 {
      font-size: 0.9375rem;
      font-weight: 700;
    }
    .testi-meta p {
      font-size: 0.75rem;
      color: var(--text-light);
    }
    /* 板块10: 适用生态划分 (Target Audience) */
    .audience-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .audience-card {
      padding: 24px 20px;
      text-align: center;
      background:#FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      transition: var(--transition);
    }
    .audience-card:hover {
      border-color: var(--grad-blue);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .audience-icon {
      width: 48px;
      height: 48px;
      margin: 0 auto 16px;
      border-radius: 12px;
      background: #F1F5F9;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 1.25rem;
    }
    .audience-card h3 {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .audience-card p {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* 板块11: 行业动态资讯 (News Insights) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-cover {
      height: 190px;
      overflow: hidden;
    }
    .news-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .news-card:hover .news-cover img {
      transform: scale(1.05);
    }
    .news-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 0.75rem;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-content h3 {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-content p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .news-tag {
      margin-top: auto;
      align-self: flex-start;
      font-size: 0.75rem;
      color: var(--grad-blue);
      background: rgba(0, 102, 255, 0.08);
      padding: 4px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    /* 板块12: 常见问题手风琴 (FAQ) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--grad-blue);
      box-shadow: var(--shadow-sm);
    }
    .faq-header {
      width: 100%;
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: none;
      cursor: pointer;
      text-align: left;
    }
    .faq-title {
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .faq-toggle-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: #F1F5F9;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-muted);
      font-weight: 700;
      transition: transform 0.3s ease;
      flex-shrink: 0;
      margin-left: 16px;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #FFFFFF;
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FAFAFC;
    }
    .faq-item.active .faq-body {
      padding: 0 24px 20px;
    }
    .faq-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed rgba(226, 232, 240, 0.8);
      padding-top: 14px;
    }
    /* 板块13: 高转化促成区 (Final CTA & Form) */
    .cta-container {
      background: linear-gradient(135deg, #07172A 0%, #0F2D59 50%, #081B33 100%);
      border-radius: var(--radius-lg);
      padding: 64px 48px;
      color: #FFFFFF;
      box-shadow: var(--shadow-hover);
      position: relative;
      overflow: hidden;
    }
    .cta-container::after {
      content: '';
      position: absolute;
      top: -50%;
      right: -20%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(0, 212, 178, 0.15) 0%, transparent 70%);
      pointer-events: none;
    }
    .cta-inner-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .cta-text h2 {
      font-size: clamp(1.85rem, 2.5vw, 2.4rem);
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .cta-text p {
      font-size: 1rem;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .cta-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .cta-feature-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9375rem;
      color: #E2E8F0;
    }
    .cta-feature-item::before {
      content: "✓";
      color: var(--grad-cyan);
      font-weight: 800;
    }
    .cta-form-box {
      background: #FFFFFF;
      padding: 36px;
      border-radius: var(--radius-md);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    }
    .cta-form-box h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .cta-form-box .form-sub {
      font-size: 0.8125rem;
      color: var(--text-light);
      margin-bottom: 20px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-input {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      font-size: 0.9375rem;
      color: var(--text-main);
      transition: var(--transition);
    }
    .form-input:focus {
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.15);
    }
    .form-submit-btn {
      width: 100%;
      height: 48px;
      background: linear-gradient(135deg, #FF6B00 0%, #FF4500 100%);
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 6px 16px rgba(255, 92, 0, 0.25);
      transition: var(--transition);
      margin-top: 8px;
    }
    .form-submit-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(255, 92, 0, 0.35);
    }
    /* 页脚 */
    .site-footer {
      background: #06121E;
      color: #94A3B8;
      font-size: 0.875rem;
      padding: 64px 0 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-logo {
      font-size: 1.25rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: inline-block;
    }
    .footer-desc {
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .footer-col h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      letter-spacing: 0.05em;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8125rem;
    }
    /* 响应式断点 */
    @media (max-width: 1024px) {
      .strengths-grid, .solutions-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-grid, .audience-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-grid, .overview-grid, .dark-grid, .cta-inner-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .overview-visual img, .dark-visual img {
        height: 320px;
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(226, 232, 240, 0.9);
        display: none;
        box-shadow: var(--shadow-md);
      }
      .nav-menu.open {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .strengths-grid, .solutions-grid, .testimonial-grid, .news-grid, .audience-grid {
        grid-template-columns: 1fr;
      }
      .stories-grid {
        grid-template-columns: 1fr;
      }
      .story-card {
        grid-template-columns: 1fr;
      }
      .story-cover {
        height: 180px;
      }
      .metrics-flex {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .workflow-grid {
        grid-template-columns: 1fr;
      }
      .cta-container {
        padding: 40px 20px;
      }
      .cta-form-box {
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 480px) {
      .metrics-flex {
        grid-template-columns: 1fr;
      }
      .overview-tech-specs {
        grid-template-columns: 1fr;
      }
      .floating-stat-badge {
        position: static;
        margin-top: 12px;
      }
    }