/* roulang page: index */
:root {
      --bg-base: #0c0e14;
      --bg-surface: #141824;
      --bg-card: rgba(20, 24, 36, 0.75);
      --bg-hover: #1b2132;
      --primary: #00e599;
      --primary-glow: rgba(0, 229, 153, 0.25);
      --accent: #00b8d9;
      --purple: #7c3aed;
      --text-main: #ffffff;
      --text-muted: #bac7d5;
      --text-sub: #6b7a90;
      --border: rgba(255, 255, 255, 0.08);
      --border-bright: rgba(0, 229, 153, 0.4);
      --font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      --container-w: 1240px;
    }

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

    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: var(--font-family);
      line-height: 1.7;
      font-size: 15px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-w);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部通知与主导航 */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(12, 14, 20, 0.85);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
    }

    .top-bar {
      background: rgba(0, 0, 0, 0.4);
      font-size: 12px;
      color: var(--text-sub);
      padding: 6px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-status {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .status-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
    }

    .nav-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: var(--text-main);
    }
    .brand-logo .logo-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0c0e14;
      font-weight: 900;
      font-size: 18px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--primary);
      color: #0c0e14;
      box-shadow: 0 4px 14px var(--primary-glow);
    }
    .btn-primary:hover {
      background: #00faaa;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 229, 153, 0.4);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      border-color: var(--border);
      color: var(--text-main);
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--text-muted);
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      color: var(--text-main);
      font-size: 24px;
      cursor: pointer;
    }

    /* 模块通用样式 */
    section.section {
      padding: 90px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-surface);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
      margin-bottom: 56px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1px;
      color: var(--primary);
      background: rgba(0, 229, 153, 0.1);
      border: 1px solid rgba(0, 229, 153, 0.25);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 1. 首屏 Hero 卡片堆叠架构 */
    .hero-section {
      padding: 60px 0 90px 0;
      background: radial-gradient(circle at 50% 10%, rgba(0, 229, 153, 0.08) 0%, transparent 60%),
                  radial-gradient(circle at 90% 40%, rgba(0, 184, 217, 0.05) 0%, transparent 50%),
                  var(--bg-base);
    }
    .hero-top-info {
      text-align: center;
      max-width: 880px;
      margin: 0 auto 40px auto;
    }
    .hero-top-info h1 {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-top-info h1 span {
      background: linear-gradient(120deg, #00e599 0%, #00b8d9 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 40px;
    }
    
    /* 卡片堆叠布局 */
    .hero-stack-container {
      display: grid;
      grid-template-columns: 280px 1fr 280px;
      gap: 20px;
      align-items: center;
      perspective: 1000px;
    }
    .stack-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      backdrop-filter: blur(10px);
      transition: var(--transition);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
    }
    .stack-card:hover {
      border-color: var(--border-bright);
      transform: translateY(-4px);
    }
    .stack-side-left {
      transform: rotateY(6deg) scale(0.96);
    }
    .stack-side-right {
      transform: rotateY(-6deg) scale(0.96);
    }
    .stack-main {
      border-color: rgba(0, 229, 153, 0.3);
      padding: 30px;
      position: relative;
      background: linear-gradient(180deg, rgba(20, 24, 36, 0.9) 0%, rgba(12, 14, 20, 0.95) 100%);
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 229, 153, 0.08);
    }
    .stack-main-img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      border-radius: var(--radius-sm);
      margin-bottom: 18px;
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .hero-badge-row {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-top: 15px;
    }
    .tag-chip {
      font-size: 11px;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border);
      color: var(--text-muted);
    }

    /* 2. 搜索 / 入口与快选条 */
    .quick-entry-bar {
      padding: 30px 0;
      background: #10131c;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .search-grid {
      display: flex;
      gap: 20px;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
    }
    .search-input-box {
      display: flex;
      align-items: center;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 6px 14px;
      width: 380px;
    }
    .search-input-box input {
      background: transparent;
      border: none;
      color: #fff;
      font-size: 14px;
      width: 100%;
      outline: none;
    }
    .entry-tags {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }
    .entry-btn {
      font-size: 13px;
      padding: 8px 14px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      color: var(--text-muted);
    }
    .entry-btn:hover {
      background: var(--bg-hover);
      color: var(--primary);
      border-color: var(--primary);
    }

    /* 3. 核心痛点与架构挑战 */
    .challenges-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .challenge-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
    }
    .challenge-card:hover {
      border-color: rgba(255, 80, 80, 0.4);
      transform: translateY(-3px);
    }
    .challenge-tag {
      font-size: 12px;
      color: #ff6b6b;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .challenge-card h3 {
      font-size: 18px;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .challenge-card p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* 4. 架构解决方案与品牌产品介绍 (图文分栏) */
    .solution-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .split-image-wrap {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
    }
    .split-image-wrap img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .tech-spec-badge {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(12, 14, 20, 0.85);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-bright);
      padding: 12px 18px;
      border-radius: var(--radius-sm);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .badge-item strong {
      display: block;
      color: var(--primary);
      font-size: 16px;
    }
    .badge-item span {
      font-size: 12px;
      color: var(--text-sub);
    }

    /* 5. 分类矩阵 (产品矩阵) */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .category-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 30px;
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .category-card:hover {
      border-color: var(--border-bright);
      box-shadow: 0 10px 30px rgba(0, 229, 153, 0.1);
      transform: translateY(-4px);
    }
    .category-badge {
      display: inline-block;
      align-self: flex-start;
      font-size: 12px;
      background: rgba(0, 184, 217, 0.12);
      border: 1px solid rgba(0, 184, 217, 0.3);
      color: var(--accent);
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .category-card h3 {
      font-size: 20px;
      margin-bottom: 12px;
    }
    .category-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.7;
    }
    .category-meta {
      border-top: 1px solid var(--border);
      padding-top: 16px;
      margin-top: auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 6. 核心优势网格 3x2 */
    .grid-3x2 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .advantage-card {
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 26px;
      transition: var(--transition);
    }
    .advantage-card:hover {
      background: var(--bg-surface);
      border-color: rgba(0, 229, 153, 0.3);
      transform: translateY(-3px);
    }
    .adv-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: rgba(0, 229, 153, 0.1);
      border: 1px solid rgba(0, 229, 153, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: bold;
      font-size: 18px;
      margin-bottom: 18px;
    }
    .advantage-card h3 {
      font-size: 18px;
      margin-bottom: 10px;
    }
    .advantage-card p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* 7. 精选架构拓扑 / 代码展示区 */
    .code-arch-box {
      background: #090b10;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }
    .terminal-head {
      background: #141721;
      padding: 10px 18px;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 1px solid var(--border);
    }
    .circle-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      display: inline-block;
    }
    .dot-red { background: #ff5f56; }
    .dot-yellow { background: #ffbd2e; }
    .dot-green { background: #27c93f; }
    .terminal-title {
      font-size: 12px;
      color: var(--text-sub);
      margin-left: 10px;
      font-family: monospace;
    }
    .terminal-body {
      padding: 24px;
      font-family: Consolas, Monaco, "Courier New", Courier, monospace;
      font-size: 13px;
      line-height: 1.8;
      color: #9cdcfe;
      overflow-x: auto;
    }
    .terminal-body .keyword { color: #569cd6; }
    .terminal-body .func { color: #dcdcaa; }
    .terminal-body .comment { color: #6a9955; font-style: italic; }
    .terminal-body .highlight { color: var(--primary); }

    /* 8. 前后对比 Before & After */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .compare-box {
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border);
    }
    .compare-box.before {
      background: rgba(255, 75, 75, 0.03);
      border-color: rgba(255, 75, 75, 0.2);
    }
    .compare-box.after {
      background: rgba(0, 229, 153, 0.03);
      border-color: rgba(0, 229, 153, 0.3);
    }
    .compare-header {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .compare-list li {
      margin-bottom: 14px;
      font-size: 14px;
      color: var(--text-muted);
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }
    .compare-list li span.mark {
      font-weight: bold;
      font-size: 16px;
    }

    /* 9. 部署流程步骤轴 */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-number {
      font-size: 32px;
      font-weight: 800;
      color: rgba(0, 229, 153, 0.25);
      line-height: 1;
      margin-bottom: 14px;
    }
    .step-card h3 {
      font-size: 17px;
      margin-bottom: 10px;
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 10. 成果数据指标条 */
    .metrics-bar {
      background: linear-gradient(90deg, #10141f 0%, #171d2b 100%);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 50px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .metric-item .metric-val {
      font-size: 40px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
      letter-spacing: -1px;
    }
    .metric-item .metric-lbl {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 11. 适用场景矩阵 */
    .scenes-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .scene-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .scene-item:hover {
      transform: translateY(-4px);
      border-color: var(--primary);
    }
    .scene-item img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }
    .scene-content {
      padding: 20px;
    }
    .scene-content h3 {
      font-size: 17px;
      margin-bottom: 8px;
    }
    .scene-content p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 12. 客户证言与落地证据 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .quote-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 24px;
      position: relative;
    }
    .client-info {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border);
      padding-top: 16px;
    }
    .client-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-surface);
      border: 1px solid var(--border-bright);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .client-meta h4 {
      font-size: 15px;
      color: var(--text-main);
    }
    .client-meta span {
      font-size: 12px;
      color: var(--text-sub);
    }

    /* 13. 行业资讯与技术快讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      border-color: rgba(255, 255, 255, 0.2);
      transform: translateY(-3px);
    }
    .news-thumb {
      width: 100%;
      height: 170px;
      object-fit: cover;
    }
    .news-body {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .news-body h3 {
      font-size: 17px;
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .news-body p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .news-link {
      margin-top: auto;
      font-size: 13px;
      color: var(--accent);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 14. 常见问题解答 FAQ */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      font-size: 20px;
      transition: transform 0.3s ease;
      color: var(--text-sub);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: rgba(0, 0, 0, 0.2);
      padding: 0 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 18px 24px 22px 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.04);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }

    /* 15. 终极行动转化区 (CTA) */
    .cta-wrapper {
      background: linear-gradient(135deg, rgba(20, 24, 36, 0.95) 0%, rgba(12, 14, 20, 0.95) 100%);
      border: 1px solid var(--border-bright);
      border-radius: var(--radius-lg);
      padding: 48px;
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      align-items: center;
      box-shadow: 0 20px 60px rgba(0, 229, 153, 0.08);
    }
    .cta-left h2 {
      font-size: 30px;
      line-height: 1.35;
      margin-bottom: 16px;
    }
    .cta-left p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .cta-feature-list {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .cta-feature-list li {
      font-size: 13px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .cta-feature-list li::before {
      content: "✔";
      color: var(--primary);
    }
    .cta-form {
      background: rgba(0, 0, 0, 0.35);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 10px 14px;
      font-size: 14px;
      color: #fff;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 10px var(--primary-glow);
    }
    .form-submit-btn {
      width: 100%;
      padding: 12px;
      font-size: 15px;
      margin-top: 10px;
    }

    /* 页脚 Footer */
    footer.site-footer {
      background: #080a0e;
      border-top: 1px solid var(--border);
      padding: 60px 0 30px 0;
      font-size: 14px;
      color: var(--text-sub);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-about h3 {
      font-size: 18px;
      color: #fff;
      margin-bottom: 14px;
    }
    .footer-about p {
      line-height: 1.8;
      margin-bottom: 16px;
      font-size: 13px;
    }
    .footer-col h4 {
      font-size: 15px;
      color: #fff;
      margin-bottom: 18px;
      font-weight: 600;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a {
      color: var(--text-muted);
    }
    .footer-col ul li a:hover {
      color: var(--primary);
    }
    .footer-contact li {
      margin-bottom: 10px;
      line-height: 1.6;
      font-size: 13px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }

    /* 移动端与响应式断点 */
    @media (max-width: 1024px) {
      .hero-stack-container {
        grid-template-columns: 1fr;
      }
      .stack-side-left, .stack-side-right {
        display: none;
      }
      .solution-split, .compare-container, .cta-wrapper {
        grid-template-columns: 1fr;
      }
      .challenges-grid, .workflow-steps, .scenes-grid, .grid-3x2, .category-grid, .metrics-grid, .news-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links, .nav-actions .btn-secondary {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .challenges-grid, .workflow-steps, .scenes-grid, .grid-3x2, .category-grid, .metrics-grid, .news-grid, .testimonials-grid {
        grid-template-columns: 1fr;
      }
      .hero-top-info h1 {
        font-size: 30px;
      }
      .section {
        padding: 56px 0;
      }
      .cta-wrapper {
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .search-grid {
        flex-direction: column;
        align-items: stretch;
      }
      .search-input-box {
        width: 100%;
      }
    }