/* roulang page: index */
:root {
      --primary-900: #0b132b;
      --primary-800: #0f172a;
      --primary-700: #1e293b;
      --primary-600: #0284c7;
      --primary-500: #06b6d4;
      --accent-green: #10b981;
      --accent-orange: #f97316;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #94a3b8;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --border-color: rgba(226, 232, 240, 0.9);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 32px;
      --shadow-soft: 0 12px 30px -8px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 20px 40px -12px rgba(2, 132, 199, 0.18);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    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-light);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

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

    /* 顶部双行导航条 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(16px);
      box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
      border-bottom: 1px solid var(--border-color);
    }

    .header-topbar {
      background: #0f172a;
      color: #94a3b8;
      font-size: 12px;
      padding: 6px 0;
    }

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

    .topbar-left span {
      margin-right: 20px;
    }

    .nav-main {
      height: 72px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }

    .logo-badge {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: linear-gradient(135deg, #0284c7 0%, #10b981 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 20px;
      box-shadow: 0 4px 10px rgba(2, 132, 199, 0.35);
    }

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

    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--primary-600);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 9999px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      gap: 8px;
    }

    .btn-primary {
      background: linear-gradient(135deg, #0284c7 0%, #06b6d4 100%);
      color: #fff;
      box-shadow: 0 4px 14px rgba(2, 132, 199, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
    }

    .btn-outline {
      border-color: #cbd5e1;
      background: #fff;
      color: var(--text-main);
    }

    .btn-outline:hover {
      border-color: var(--primary-600);
      color: var(--primary-600);
      background: #f0f9ff;
    }

    /* 移动端菜单按钮 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 通用章节规范 */
    .section-wrap {
      padding: 84px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 56px auto;
    }

    .section-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-600);
      background: #e0f2fe;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

    .pulse-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--accent-green);
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse 1.8s infinite cubic-bezier(0.66, 0, 0, 1);
    }

    @keyframes pulse {
      to {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
      }
    }

    .section-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero 堆叠首屏 */
    #hero {
      position: relative;
      background: radial-gradient(circle at 80% 20%, rgba(2, 132, 199, 0.12) 0%, rgba(248, 250, 252, 0) 60%),
                  linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
      padding: 70px 0 90px 0;
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }

    .hero-copy h1 {
      font-size: 44px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 22px;
      color: var(--primary-900);
      letter-spacing: -1px;
    }

    .hero-copy h1 span {
      background: linear-gradient(135deg, #0284c7 0%, #10b981 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-p {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 36px;
      text-align: justify;
    }

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

    .hero-stats-strip {
      display: flex;
      gap: 32px;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
    }

    .h-stat-num {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary-900);
    }

    .h-stat-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 卡片堆叠视觉区 */
    .hero-stack {
      position: relative;
      height: 480px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .stack-card {
      position: absolute;
      border-radius: var(--radius-lg);
      background: #ffffff;
      box-shadow: 0 20px 45px rgba(15, 23, 42, 0.12);
      border: 1px solid rgba(226, 232, 240, 0.9);
      overflow: hidden;
      transition: var(--transition);
    }

    .stack-card.main-card {
      width: 88%;
      height: 380px;
      z-index: 3;
      top: 50px;
      left: 6%;
      display: flex;
      flex-direction: column;
    }

    .stack-card.sub-card-1 {
      width: 68%;
      height: 240px;
      z-index: 2;
      top: 0;
      right: 0;
      background: #0f172a;
      color: #ffffff;
      padding: 24px;
      transform: rotate(4deg);
      opacity: 0.95;
    }

    .stack-card.sub-card-2 {
      width: 65%;
      height: 190px;
      z-index: 4;
      bottom: 0;
      left: -10px;
      background: #ffffff;
      padding: 20px;
      border-left: 5px solid var(--accent-green);
      transform: rotate(-3deg);
    }

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

    .main-card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .main-card-body {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #fff;
      flex-grow: 1;
    }

    /* 2. 优惠阶梯与服务接入通道 (#tiers) */
    .ladder-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .ladder-card {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      position: relative;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .ladder-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-600);
    }

    .ladder-tag {
      position: absolute;
      top: 20px;
      right: 20px;
      background: #eff6ff;
      color: var(--primary-600);
      font-size: 12px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 99px;
    }

    .ladder-title {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .ladder-price {
      font-size: 32px;
      font-weight: 900;
      color: var(--primary-600);
      margin-bottom: 16px;
    }

    .ladder-price small {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-light);
    }

    .ladder-features {
      list-style: none;
      margin: 20px 0 28px 0;
      flex-grow: 1;
    }

    .ladder-features li {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .ladder-features li::before {
      content: "✓";
      color: var(--accent-green);
      font-weight: 800;
      background: #dcfce7;
      width: 18px;
      height: 18px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      font-size: 11px;
    }

    /* 3. 套餐维度深度对标与技术规格 (#comparison) */
    .compare-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-soft);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 720px;
    }

    .compare-table th, .compare-table td {
      padding: 20px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 800;
      color: var(--primary-900);
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .check-icon {
      color: var(--accent-green);
      font-weight: bold;
    }

    .cross-icon {
      color: #cbd5e1;
    }

    /* 4. 限时体验与示范点直通专区 (#fastpass) */
    .fastpass-banner {
      background: linear-gradient(135deg, #0b132b 0%, #1e293b 100%);
      border-radius: var(--radius-xl);
      padding: 56px 48px;
      color: #fff;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
      align-items: center;
      position: relative;
      overflow: hidden;
    }

    .fastpass-banner::after {
      content: "";
      position: absolute;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(2, 132, 199, 0.4) 0%, transparent 70%);
      top: -100px;
      right: -80px;
      border-radius: 50%;
    }

    .fastpass-title {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .fastpass-desc {
      font-size: 15px;
      color: #94a3b8;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .timer-badge {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 10px 18px;
      border-radius: 12px;
      font-size: 13px;
    }

    .timer-box {
      background: var(--accent-orange);
      color: #fff;
      padding: 2px 8px;
      border-radius: 6px;
      font-weight: 700;
    }

    /* 5. 爆款设备与自研终端清单 (#products) */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .prod-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .prod-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-600);
    }

    .prod-thumb {
      height: 220px;
      position: relative;
      background: #e2e8f0;
    }

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

    .prod-category {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(8px);
      color: #fff;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 6px;
      font-weight: 600;
    }

    .prod-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .prod-name {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .prod-spec-list {
      list-style: none;
      margin: 14px 0 20px 0;
      font-size: 13px;
      color: var(--text-muted);
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }

    .prod-spec-list li {
      margin-bottom: 8px;
      display: flex;
      justify-content: space-between;
    }

    /* 6. 多场景演练演示区 (#scenes) */
    .scene-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 50px;
      background: #fff;
      padding: 32px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
    }

    .scene-row.reverse {
      grid-template-columns: 1fr 1fr;
      direction: rtl;
    }

    .scene-row.reverse .scene-text {
      direction: ltr;
    }

    .scene-text h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 14px;
      color: var(--text-main);
    }

    .scene-text p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .scene-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .scene-tag {
      font-size: 12px;
      background: #f1f5f9;
      color: var(--primary-700);
      padding: 5px 12px;
      border-radius: 6px;
      font-weight: 600;
    }

    .scene-img-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      height: 280px;
    }

    .scene-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* 7. 硬核运营数据指标条 (#metrics) */
    .metrics-bar {
      background: linear-gradient(135deg, #0b132b 0%, #0f172a 100%);
      color: #fff;
      padding: 60px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }

    .metric-item {
      padding: 10px 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
    }

    .metric-item:last-child {
      border-right: none;
    }

    .metric-value {
      font-size: 42px;
      font-weight: 900;
      color: var(--accent-green);
      line-height: 1;
      margin-bottom: 8px;
    }

    .metric-title {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .metric-note {
      font-size: 12px;
      color: #94a3b8;
    }

    /* 8. 评价墙与实证口碑 (#testimonials) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      position: relative;
    }

    .stars {
      color: #eab308;
      font-size: 16px;
      margin-bottom: 14px;
    }

    .review-body {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #0284c7;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .reviewer-meta h4 {
      font-size: 15px;
      font-weight: 700;
    }

    .reviewer-meta p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 9. 保障图标条与规范合规 (#guarantee) */
    .guarantee-bar {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px 40px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      box-shadow: var(--shadow-soft);
    }

    .guarantee-item {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }

    .guarantee-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: #f0fdf4;
      color: var(--accent-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      flex-shrink: 0;
      font-weight: bold;
    }

    .guarantee-content h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .guarantee-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 10. 前沿技术动态与资讯证据 (#news) */
    .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-color);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

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

    .news-thumb {
      height: 180px;
      overflow: hidden;
    }

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

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

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

    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }

    .news-heading {
      font-size: 17px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .news-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .news-link {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-600);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 11. FAQ 常见异议折叠面板 (#faq) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--primary-600);
      box-shadow: var(--shadow-soft);
    }

    .faq-question {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      user-select: none;
    }

    .faq-item.active .faq-question {
      color: var(--primary-600);
    }

    .faq-icon {
      font-size: 20px;
      transition: transform 0.3s ease;
      color: var(--text-light);
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary-600);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      background: #fafafa;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 22px 24px;
    }

    /* 12. 加购与部署收口引导区 (#cta) */
    .cta-box {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      border-radius: var(--radius-xl);
      padding: 56px 48px;
      color: #ffffff;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
      box-shadow: 0 24px 48px -12px rgba(15, 23, 42, 0.25);
    }

    .cta-info h2 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .cta-info p {
      font-size: 15px;
      color: #94a3b8;
      line-height: 1.7;
      margin-bottom: 28px;
    }

    .cta-highlights {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .cta-hl-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: #e2e8f0;
    }

    .cta-form-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px;
      color: var(--text-main);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-muted);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: 8px;
      border: 1px solid #cbd5e1;
      font-size: 14px;
      transition: var(--transition);
      outline: none;
    }

    .form-control:focus {
      border-color: var(--primary-600);
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
    }

    .form-submit-btn {
      width: 100%;
      padding: 14px;
      border-radius: 8px;
      background: linear-gradient(135deg, #0284c7 0%, #10b981 100%);
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      border: none;
      cursor: pointer;
      box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
      transition: var(--transition);
    }

    .form-submit-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(2, 132, 199, 0.45);
    }

    /* 13. 悬浮吸底转化条 (Fixed CTA Bar) */
    .fixed-action-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(15, 23, 42, 0.94);
      backdrop-filter: blur(12px);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      z-index: 999;
      padding: 12px 0;
      box-shadow: 0 -8px 20px rgba(0, 0, 0, 0.15);
    }

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

    .fixed-bar-info {
      display: flex;
      align-items: center;
      gap: 16px;
      color: #fff;
    }

    .fixed-title {
      font-size: 15px;
      font-weight: 700;
    }

    .fixed-desc {
      font-size: 13px;
      color: #94a3b8;
    }

    .fixed-bar-btns {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* 页脚设计规范 */
    .site-footer {
      background: #0b132b;
      color: #94a3b8;
      padding: 70px 0 90px 0;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }

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

    .footer-brand h3 {
      font-size: 20px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
      color: #94a3b8;
    }

    .footer-links-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 18px;
    }

    .footer-links-col ul {
      list-style: none;
    }

    .footer-links-col li {
      margin-bottom: 10px;
    }

    .footer-links-col a:hover {
      color: #fff;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    .footer-bottom a {
      color: #94a3b8;
      text-decoration: underline;
    }

    /* 移动端菜单抽屉 */
    .mobile-drawer {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(15, 23, 42, 0.98);
      z-index: 1100;
      padding: 30px 24px;
      flex-direction: column;
    }

    .drawer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
      color: #fff;
    }

    .drawer-links {
      display: flex;
      flex-direction: column;
      gap: 24px;
      list-style: none;
    }

    .drawer-links a {
      font-size: 18px;
      font-weight: 700;
      color: #cbd5e1;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-stack {
        height: 380px;
      }
      .stack-card.main-card {
        width: 100%;
        left: 0;
        top: 20px;
      }
      .stack-card.sub-card-1 {
        display: none;
      }
      .ladder-grid, .product-grid, .reviews-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .guarantee-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .fastpass-banner, .cta-box {
        grid-template-columns: 1fr;
        gap: 30px;
      }
    }

    @media (max-width: 768px) {
      .header-topbar {
        display: none;
      }
      .nav-links, .header-cta {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .section-wrap {
        padding: 56px 0;
      }
      .section-title {
        font-size: 26px;
      }
      .hero-copy h1 {
        font-size: 30px;
      }
      .ladder-grid, .product-grid, .reviews-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .scene-row {
        grid-template-columns: 1fr;
        padding: 20px;
      }
      .scene-row.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
      }
      .guarantee-bar {
        grid-template-columns: 1fr;
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .fixed-desc {
        display: none;
      }
      .hero-stats-strip {
        gap: 16px;
        flex-wrap: wrap;
      }
    }