/* roulang page: index */
:root {
      --primary: #00D084;
      --primary-hover: #00b371;
      --secondary: #3B82F6;
      --accent: #FF6B00;
      --dark-slate: #0F172A;
      --dark-card: #1E293B;
      --text-main: #0F172A;
      --text-sub: #475569;
      --text-muted: #94A3B8;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-full: 9999px;
      --shadow-sm: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 12px 30px -4px rgba(0, 208, 132, 0.18);
      --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-family);
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }

    .top-bar {
      background: #F1F5F9;
      font-size: 0.825rem;
      color: var(--text-sub);
      padding: 6px 0;
      border-bottom: 1px solid #E2E8F0;
    }

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

    .top-bar-tags span {
      margin-right: 16px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .top-bar-tags span::before {
      content: "•";
      color: var(--primary);
      font-weight: bold;
    }

    .main-nav {
      padding: 14px 0;
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--dark-slate);
      letter-spacing: -0.5px;
    }

    .brand-logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 900;
      font-size: 1.15rem;
      box-shadow: 0 4px 12px rgba(0, 208, 132, 0.35);
    }

    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
      align-items: center;
    }

    .nav-links a {
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-sub);
    }

    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }

    .header-cta-btn {
      background: var(--dark-slate);
      color: #FFF;
      padding: 9px 24px;
      border-radius: var(--radius-full);
      font-size: 0.9rem;
      font-weight: 700;
      border: 1px solid transparent;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .header-cta-btn:hover {
      background: var(--primary);
      color: var(--dark-slate);
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }

    /* 按钮通用 */
    .btn-primary {
      background: var(--primary);
      color: var(--dark-slate);
      font-weight: 700;
      padding: 13px 32px;
      border-radius: var(--radius-full);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      box-shadow: 0 6px 18px rgba(0, 208, 132, 0.28);
      transition: all 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.15);
      color: #FFF;
      border: 1px solid rgba(255, 255, 255, 0.3);
      font-weight: 600;
      padding: 13px 30px;
      border-radius: var(--radius-full);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.3s ease;
    }

    .btn-secondary:hover {
      background: #FFF;
      color: var(--dark-slate);
      border-color: #FFF;
      transform: translateY(-2px);
    }

    /* 板块通用 */
    .section-padding {
      padding: 86px 0;
    }

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

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

    .section-bg-dark {
      background-color: var(--dark-slate);
      color: #FFF;
    }

    .section-header {
      margin-bottom: 50px;
      max-width: 820px;
    }

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

    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 800;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1px;
      background: rgba(0, 208, 132, 0.1);
      padding: 4px 12px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
    }

    .section-bg-dark .section-tag {
      background: rgba(0, 208, 132, 0.2);
    }

    .section-title {
      font-size: 2.15rem;
      line-height: 1.3;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-sub);
      line-height: 1.8;
    }

    .section-bg-dark .section-desc {
      color: #94A3B8;
    }

    /* 1. Hero 裂变首屏 */
    .hero-section {
      background: linear-gradient(135deg, #070D18 0%, #0F172A 70%, #172554 100%), url('/assets/images/智动AI---国家队级AI数字科技运动技术---水滴智店.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
      color: #FFF;
      padding: 95px 0 85px;
      position: relative;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-badge-live {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(0, 208, 132, 0.15);
      border: 1px solid rgba(0, 208, 132, 0.3);
      padding: 6px 14px;
      border-radius: var(--radius-full);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.85rem;
      margin-bottom: 20px;
    }

    .hero-badge-live .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--primary);
    }

    .hero-content h1 {
      font-size: 2.85rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-content h1 span {
      color: var(--primary);
      position: relative;
    }

    .hero-desc {
      font-size: 1.1rem;
      color: #CBD5E1;
      margin-bottom: 32px;
      line-height: 1.8;
      max-width: 620px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 36px;
    }

    .hero-stats-row {
      display: flex;
      gap: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 24px;
    }

    .hero-stat-item h4 {
      font-size: 1.75rem;
      color: #FFF;
      font-weight: 800;
    }

    .hero-stat-item p {
      font-size: 0.85rem;
      color: #94A3B8;
    }

    .hero-growth-box {
      background: rgba(30, 41, 59, 0.88);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }

    .growth-box-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 14px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .growth-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #FFF;
    }

    .growth-tag {
      font-size: 0.75rem;
      background: var(--accent);
      color: #FFF;
      padding: 3px 8px;
      border-radius: var(--radius-full);
      font-weight: 700;
    }

    .progress-track {
      background: rgba(255, 255, 255, 0.1);
      height: 10px;
      border-radius: var(--radius-full);
      margin: 16px 0;
      overflow: hidden;
      position: relative;
    }

    .progress-fill {
      background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
      height: 100%;
      width: 82%;
      border-radius: var(--radius-full);
    }

    .growth-steps {
      list-style: none;
      margin-top: 20px;
    }

    .growth-steps li {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.9rem;
      color: #CBD5E1;
      padding: 10px 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
    }

    .growth-steps li span.score {
      font-weight: 700;
      color: var(--primary);
    }

    /* 2. 优惠阶梯墙 (蓝图组件要求) */
    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .tier-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .tier-card.featured {
      border-color: var(--primary);
      box-shadow: 0 10px 30px rgba(0, 208, 132, 0.15);
    }

    .tier-ribbon {
      position: absolute;
      top: 14px;
      right: -30px;
      background: var(--accent);
      color: #FFF;
      font-size: 0.7rem;
      font-weight: 700;
      padding: 4px 30px;
      transform: rotate(45deg);
    }

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

    .tier-level {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 8px;
    }

    .tier-val {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--dark-slate);
      margin-bottom: 14px;
    }

    .tier-val small {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: normal;
    }

    .tier-features {
      list-style: none;
      margin: 20px 0 28px;
    }

    .tier-features li {
      padding: 8px 0;
      color: var(--text-sub);
      font-size: 0.9rem;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .tier-features li::before {
      content: "✓";
      color: var(--primary);
      font-weight: bold;
    }

    /* 3. 问题陈述 */
    .problem-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .problem-box {
      background: var(--bg-white);
      border: 1px solid #FEE2E2;
      border-radius: var(--radius-md);
      padding: 32px;
      position: relative;
    }

    .problem-icon {
      width: 48px;
      height: 48px;
      background: #FEE2E2;
      color: #DC2626;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      font-weight: bold;
      margin-bottom: 18px;
    }

    .problem-box h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--dark-slate);
    }

    .problem-box p {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 4. 操作演示 (步骤流) */
    .pipeline-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .pipeline-step-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      position: relative;
      transition: all 0.3s ease;
    }

    .pipeline-step-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }

    .step-number {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--primary);
      background: rgba(0, 208, 132, 0.1);
      display: inline-block;
      padding: 4px 10px;
      border-radius: var(--radius-full);
      margin-bottom: 16px;
    }

    .pipeline-step-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--dark-slate);
    }

    .pipeline-step-card p {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* 5. 结果预览专题卡片 (产品分类入口) */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .category-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .category-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }

    .card-thumb-wrap {
      position: relative;
      height: 220px;
      overflow: hidden;
    }

    .card-thumb-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .category-card:hover .card-thumb-wrap img {
      transform: scale(1.05);
    }

    .category-body {
      padding: 28px;
    }

    .category-body .app-type-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--secondary);
      background: #EFF6FF;
      padding: 3px 10px;
      border-radius: var(--radius-full);
      display: inline-block;
      margin-bottom: 12px;
    }

    .category-body h3 {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--dark-slate);
    }

    .category-body p {
      font-size: 0.925rem;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .stat-pill-row {
      display: flex;
      justify-content: space-between;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }

    .pill-item span {
      display: block;
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    .pill-item strong {
      font-size: 1.05rem;
      color: var(--primary);
      font-weight: 700;
    }

    /* 6. 深色理念架构全景 */
    .arch-flow-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .arch-spec-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .arch-item {
      background: var(--dark-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      gap: 18px;
    }

    .arch-icon {
      font-size: 1.5rem;
      color: var(--primary);
    }

    .arch-text h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 6px;
    }

    .arch-text p {
      font-size: 0.9rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    .arch-visual-frame {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }

    /* 7. 常见卡住点排查 */
    .bottleneck-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .bottleneck-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      border-top: 4px solid var(--accent);
    }

    .bottleneck-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 12px;
    }

    .bottleneck-card p {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 8. 成功路径与行业标杆案例 */
    .case-split-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-media img {
      width: 100%;
      height: 100%;
      min-height: 380px;
      object-fit: cover;
    }

    .case-info {
      padding: 40px;
    }

    .case-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      background: #FFF7ED;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      display: inline-block;
      margin-bottom: 14px;
    }

    .case-info h3 {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--dark-slate);
      margin-bottom: 16px;
      line-height: 1.35;
    }

    .case-info p {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.75;
      margin-bottom: 24px;
    }

    .case-metrics-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid #E2E8F0;
      padding-top: 20px;
    }

    .case-metric-box strong {
      font-size: 1.5rem;
      color: var(--primary);
      font-weight: 800;
      display: block;
    }

    .case-metric-box span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 9. 关键指标数据条 */
    .metrics-bar-section {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      color: #FFF;
      padding: 56px 0;
    }

    .metrics-flex-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .metrics-col h3 {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }

    .metrics-col p {
      font-size: 0.95rem;
      color: #94A3B8;
      font-weight: 500;
    }

    /* 10. 用户口碑真实故事 */
    .stories-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .story-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 34px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .story-header {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 20px;
    }

    .story-avatar {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 800;
      font-size: 1.1rem;
    }

    .story-author h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark-slate);
    }

    .story-author p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .story-body {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .story-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--secondary);
      background: #EFF6FF;
      padding: 5px 12px;
      border-radius: var(--radius-full);
      width: fit-content;
    }

    /* 11. 开发者与生态多维反馈墙 */
    .testimonial-wall-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-bubble {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
    }

    .review-bubble:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }

    .review-stars {
      color: #FBBF24;
      font-size: 0.95rem;
      margin-bottom: 12px;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 18px;
    }

    .reviewer-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
      font-size: 0.825rem;
    }

    .reviewer-name {
      font-weight: 700;
      color: var(--dark-slate);
    }

    .reviewer-role {
      color: var(--text-muted);
    }

    /* 12. 体育应用推荐洞察与资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .news-item-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }

    .news-item-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .news-thumb {
      height: 190px;
      overflow: hidden;
    }

    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 10px;
    }

    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 12px;
      color: var(--dark-slate);
    }

    .news-summary {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .news-link-btn {
      color: var(--secondary);
      font-weight: 700;
      font-size: 0.875rem;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 13. 高频疑问解答手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    details.faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 20px 24px;
      transition: all 0.25s ease;
    }

    details.faq-item[open] {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    summary.faq-question {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark-slate);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    summary.faq-question::-webkit-details-marker {
      display: none;
    }

    summary.faq-question::after {
      content: "+";
      font-size: 1.4rem;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.2s ease;
    }

    details[open] summary.faq-question::after {
      transform: rotate(45deg);
      color: var(--primary);
    }

    .faq-answer {
      margin-top: 14px;
      font-size: 0.925rem;
      color: var(--text-sub);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* 底部收口行动区 */
    .cta-final-section {
      background: linear-gradient(135deg, #070D18 0%, #0F172A 100%);
      color: #FFF;
      text-align: center;
      padding: 85px 0;
      position: relative;
    }

    .cta-form-box {
      max-width: 620px;
      margin: 32px auto 0;
      display: flex;
      gap: 12px;
      background: rgba(255, 255, 255, 0.08);
      padding: 8px;
      border-radius: var(--radius-full);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .cta-input {
      flex: 1;
      background: transparent;
      border: none;
      outline: none;
      padding: 12px 24px;
      font-size: 0.95rem;
      color: #FFF;
      font-family: inherit;
    }

    .cta-input::placeholder {
      color: #94A3B8;
    }

    /* 页脚 Footer */
    .site-footer {
      background: #090E17;
      color: #94A3B8;
      font-size: 0.875rem;
      padding: 68px 0 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-brand h4 {
      font-size: 1.25rem;
      color: #FFF;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
      color: #64748B;
    }

    .footer-col h5 {
      color: #FFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

    .footer-contact-info p {
      line-height: 1.8;
      color: #64748B;
      margin-bottom: 6px;
    }

    .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: 0.825rem;
      color: #64748B;
    }

    /* 响应式样式适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .tier-grid, .problem-grid, .category-grid, .bottleneck-grid, .news-grid, .testimonial-wall-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pipeline-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .arch-flow-wrap, .case-split-wrap {
        grid-template-columns: 1fr;
      }
      .metrics-flex-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 36px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hero-content h1 {
        font-size: 2.15rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .tier-grid, .problem-grid, .category-grid, .bottleneck-grid, .news-grid, .testimonial-wall-grid, .stories-grid {
        grid-template-columns: 1fr;
      }
      .pipeline-grid {
        grid-template-columns: 1fr;
      }
      .metrics-flex-row {
        grid-template-columns: 1fr;
      }
      .case-info {
        padding: 24px;
      }
      .case-metrics-bar {
        grid-template-columns: 1fr;
      }
      .cta-form-box {
        flex-direction: column;
        background: transparent;
        border: none;
        padding: 0;
      }
      .cta-input {
        background: rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-full);
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }