/* roulang page: index */
:root {
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-dark: #0D1117;
      --bg-dark-card: #161B22;
      --primary: #10B981;
      --primary-hover: #059669;
      --primary-light: rgba(16, 185, 129, 0.1);
      --accent: #F59E0B;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --border-dark: #30363D;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 6px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 12px 28px -4px rgba(16, 185, 129, 0.15);
      --font-base: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-mono: "DIN Alternate", "SF Pro Display", Menlo, monospace;
    }

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

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

    body {
      font-family: var(--font-base);
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.65;
      -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;
    }

    ul, ol {
      list-style: none;
    }

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

    /* 顶部通知栏 */
    .top-bar {
      background-color: #0B0F15;
      color: #94A3B8;
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 8px 0;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .broadcast-badge {
      background: rgba(16, 185, 129, 0.2);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      margin-right: 8px;
    }
    .top-bar-links a {
      color: #94A3B8;
      margin-left: 16px;
    }
    .top-bar-links a:hover {
      color: var(--primary);
    }

    /* 主导航 */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }
    .nav-wrap {
      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: 800;
      color: var(--text-main);
      letter-spacing: -0.02em;
    }
    .brand-logo-icon {
      width: 34px;
      height: 34px;
      background: linear-gradient(135deg, var(--primary), #059669);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 18px;
      box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
      padding: 8px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid transparent;
      outline: none;
    }
    .btn:active {
      transform: scale(0.98);
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), #059669);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
    }
    .btn-primary:hover {
      box-shadow: 0 6px 18px rgba(16, 185, 129, 0.35);
      background: linear-gradient(135deg, #059669, #047857);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--text-main);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      background: #F1F5F9;
      border-color: #CBD5E1;
    }
    .btn-dark {
      background: var(--bg-dark-card);
      color: #FFFFFF;
      border-color: var(--border-dark);
    }
    .btn-dark:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 移动端汉堡按钮 */
    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* Section 通用规范 */
    .section {
      padding: 96px 0;
      position: relative;
    }
    .section-white {
      background-color: #FFFFFF;
    }
    .section-gray {
      background-color: #F8FAFC;
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #E2E8F0;
    }
    .section-header {
      max-width: 760px;
      margin: 0 auto 56px;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 14px;
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.01em;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-muted);
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 板块 1: Hero */
    .hero-section {
      padding: 80px 0 90px;
      background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 60%),
                  linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 46px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
    }
    .hero-h1 span {
      background: linear-gradient(135deg, #059669 0%, #10B981 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 17px;
      line-height: 1.75;
      color: var(--text-body);
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-capsules {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .capsule-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-body);
      box-shadow: var(--shadow-sm);
    }
    .capsule-dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
    }
    .hero-visual-card {
      background: #0B0F15;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-md);
    }
    .hero-visual-img {
      width: 100%;
      height: 380px;
      object-fit: cover;
      display: block;
    }
    .hero-visual-meta {
      padding: 20px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      background: #111722;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .hero-stat-block {
      text-align: center;
    }
    .hero-stat-num {
      font-family: var(--font-mono);
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
    }
    .hero-stat-label {
      font-size: 12px;
      color: #94A3B8;
      margin-top: 2px;
    }

    /* 板块 2: 平台架构 */
    .intro-grid {
      display: grid;
      grid-template-columns: 0.95fr 1.05fr;
      gap: 56px;
      align-items: center;
    }
    .intro-param-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .intro-spec-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding-bottom: 20px;
      margin-bottom: 20px;
      border-bottom: 1px solid #F1F5F9;
    }
    .intro-spec-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
      margin-bottom: 0;
    }
    .spec-icon {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
      font-size: 18px;
      flex-shrink: 0;
    }
    .intro-media-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      position: relative;
    }
    .intro-img {
      width: 100%;
      height: 400px;
      object-fit: cover;
    }
    .intro-overlay-badge {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(13, 17, 23, 0.88);
      color: #FFFFFF;
      padding: 12px 20px;
      border-radius: 8px;
      font-size: 14px;
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    /* 板块 3: 六维赋能矩阵 */
    .grid-3col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .matrix-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }
    .matrix-icon-badge {
      width: 48px;
      height: 48px;
      background: #F1F5F9;
      color: var(--text-main);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
      transition: all 0.3s ease;
    }
    .matrix-card:hover .matrix-icon-badge {
      background: var(--primary);
      color: #FFFFFF;
    }
    .matrix-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .matrix-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 4: 拳头产品与终端 */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .product-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .product-card.featured {
      border: 2px solid var(--primary);
      transform: translateY(-6px);
      box-shadow: 0 12px 30px rgba(16, 185, 129, 0.12);
    }
    .product-header {
      padding: 28px 24px;
      background: #FAFAFA;
      border-bottom: 1px solid var(--border-color);
    }
    .product-target {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 6px;
      text-transform: uppercase;
    }
    .product-title {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
    }
    .product-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .product-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feature-check-list {
      margin-bottom: 24px;
    }
    .feature-check-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--text-body);
      margin-bottom: 12px;
    }
    .feature-check-item::before {
      content: "✓";
      color: var(--primary);
      font-weight: 800;
    }

    /* 板块 5: 算法理念 (深色) */
    .algo-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .algo-text h3 {
      font-size: 28px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 20px;
      line-height: 1.35;
    }
    .algo-text p {
      font-size: 15px;
      line-height: 1.75;
      color: #94A3B8;
      margin-bottom: 24px;
    }
    .algo-boxes {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .algo-box-item {
      background: rgba(22, 27, 34, 0.85);
      border: 1px solid var(--border-dark);
      padding: 20px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .algo-box-title {
      font-size: 15px;
      font-weight: 600;
      color: #FFFFFF;
    }
    .algo-box-metric {
      font-family: var(--font-mono);
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
    }

    /* 板块 6: 落地应用实景 */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .case-img {
      width: 100%;
      height: 260px;
      object-fit: cover;
    }
    .case-content {
      padding: 30px;
    }
    .case-content h4 {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .case-content p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 7: 关键性能横幅 */
    .data-strip-section {
      background: #0B0F15;
      color: #FFFFFF;
      padding: 56px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .data-strip-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .data-item-val {
      font-family: var(--font-mono);
      font-size: 40px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .data-item-title {
      font-size: 15px;
      color: #94A3B8;
      font-weight: 500;
    }

    /* 板块 8: 专家反馈 */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }
    .testi-stars {
      color: var(--accent);
      font-size: 16px;
      letter-spacing: 2px;
      margin-bottom: 16px;
    }
    .testi-quote {
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-body);
      margin-bottom: 24px;
      font-style: italic;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .testi-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--text-main);
      font-size: 16px;
    }
    .testi-name {
      font-weight: 700;
      color: var(--text-main);
      font-size: 15px;
    }
    .testi-org {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 9: 资讯快报 */
    .news-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }
    .news-spotlight {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .news-spotlight-img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }
    .news-spotlight-body {
      padding: 28px;
    }
    .news-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 10px;
      display: inline-block;
    }
    .news-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .news-excerpt {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .news-list-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      display: flex;
      gap: 20px;
      align-items: center;
      box-shadow: var(--shadow-sm);
    }
    .news-list-date {
      font-family: var(--font-mono);
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      min-width: 80px;
      text-align: center;
      background: var(--primary-light);
      padding: 8px;
      border-radius: 6px;
    }
    .news-list-content h5 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .news-list-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 10: 流程步进 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      font-family: var(--font-mono);
      font-size: 28px;
      font-weight: 800;
      color: rgba(16, 185, 129, 0.25);
      margin-bottom: 12px;
    }
    .step-card h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 11: FAQ 手风琴 */
    .faq-container {
      max-width: 840px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 22px 26px;
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-icon {
      font-size: 18px;
      font-weight: 600;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      padding: 0 26px 22px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 板块 12: 保障徽章 */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-badge {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 20px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      gap: 16px;
      box-shadow: var(--shadow-sm);
    }
    .guarantee-symbol {
      width: 40px;
      height: 40px;
      background: var(--primary-light);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
      font-size: 16px;
      flex-shrink: 0;
    }
    .guarantee-text h5 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .guarantee-text p {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 2px;
    }

    /* 板块 13: 转化 CTA */
    .cta-card {
      background: linear-gradient(135deg, #0B0F15 0%, #161B22 100%);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: #FFFFFF;
      box-shadow: var(--shadow-md);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .cta-left h3 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 16px;
      letter-spacing: -0.01em;
    }
    .cta-left p {
      font-size: 16px;
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-benefits {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .cta-benefit-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: #E2E8F0;
    }
    .cta-benefit-item::before {
      content: "•";
      color: var(--primary);
      font-size: 20px;
    }
    .cta-form {
      background: #111722;
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 32px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      background: #0B0F15;
      border: 1px solid #30363D;
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary);
    }
    .form-submit {
      width: 100%;
      padding: 14px;
      font-size: 16px;
      margin-top: 10px;
    }

    /* 页脚 */
    .footer {
      background: #0B0F15;
      color: #94A3B8;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 72px 0 32px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
      gap: 40px;
      margin-bottom: 56px;
    }
    .footer-brand h4 {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a {
      font-size: 14px;
      color: #94A3B8;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-contact li {
      font-size: 14px;
      margin-bottom: 10px;
      color: #94A3B8;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }
    .footer-bottom a {
      color: #94A3B8;
    }
    .footer-bottom a:hover {
      color: var(--primary);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .intro-grid, .algo-grid, .case-grid, .news-grid, .cta-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .grid-3col, .product-grid, .testi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-visual-img, .intro-img {
        height: 300px;
      }
    }

    @media (max-width: 768px) {
      .mobile-toggle {
        display: block;
      }
      .top-bar {
        display: none;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 72px);
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 32px 24px;
        gap: 20px;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
      }
      .nav-menu.active {
        right: 0;
      }
      .nav-btn {
        width: 100%;
      }
      .hero-h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .grid-3col, .product-grid, .testi-grid, .data-strip-grid, .step-grid, .guarantee-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-card {
        padding: 32px 20px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }