/* roulang page: index */
:root {
      --primary: #0F172A;
      --primary-light: #1E293B;
      --accent: #00D29E;
      --accent-hover: #05b589;
      --accent-glow: rgba(0, 210, 158, 0.2);
      --cyan: #06B6D4;
      --bg-main: #F8FAFC;
      --bg-alt: #F1F5F9;
      --bg-dark: #0B1120;
      --bg-footer: #070D18;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-light: rgba(226, 232, 240, 0.9);
      --border-dark: rgba(255, 255, 255, 0.08);
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

    body {
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.68;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      width: 100%;
      max-width: 1260px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部微型通知条 */
    .top-bar {
      background: #090e17;
      color: #94a3b8;
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 8px 0;
    }
    .top-bar-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-tags {
      display: flex;
      gap: 16px;
    }
    .top-bar-tags span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .top-bar-tags span::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--accent);
      border-radius: 50%;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(15, 23, 42, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: var(--transition);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .logo-badge {
      width: 42px;
      height: 42px;
      background: linear-gradient(135deg, var(--accent) 0%, var(--cyan) 100%);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 800;
      font-size: 20px;
      box-shadow: 0 4px 12px var(--accent-glow);
    }
    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: #ffffff;
      letter-spacing: -0.3px;
      display: flex;
      flex-direction: column;
    }
    .logo-text small {
      font-size: 11px;
      color: var(--accent);
      font-weight: 500;
      letter-spacing: 1px;
      text-transform: uppercase;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 32px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: #cbd5e1;
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: #ffffff;
    }
    .nav-link.active::after, .nav-link:hover::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 汉堡按钮 */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: #ffffff;
      font-size: 24px;
      cursor: pointer;
      padding: 6px;
    }

    /* 通用按钮 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 26px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      gap: 8px;
    }
    .btn-primary {
      background: var(--accent);
      color: var(--primary);
      box-shadow: 0 4px 16px var(--accent-glow);
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 210, 158, 0.35);
    }
    .btn-outline {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.3);
      color: #ffffff;
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #ffffff;
      transform: translateY(-2px);
    }
    .btn-dark {
      background: var(--primary);
      color: #ffffff;
    }
    .btn-dark:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    /* 通用 Section 规范 */
    .section {
      padding: 96px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #ffffff;
    }
    .section-head {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 60px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--accent);
      background: rgba(0, 210, 158, 0.12);
      padding: 5px 14px;
      border-radius: 30px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 14px;
      border: 1px solid rgba(0, 210, 158, 0.25);
    }
    .section-dark .section-tag {
      background: rgba(0, 210, 158, 0.15);
      border-color: rgba(0, 210, 158, 0.3);
    }
    .section-title {
      font-size: 34px;
      font-weight: 700;
      letter-spacing: -0.5px;
      line-height: 1.35;
      margin-bottom: 18px;
    }
    .section-dark .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .section-dark .section-desc {
      color: var(--text-light);
    }

    /* 1. Hero 区域 (促销主视觉 + 限时角标 + 强对比) */
    #hero {
      position: relative;
      background: linear-gradient(175deg, #070d18 0%, #0F172A 70%, #132238 100%);
      color: #ffffff;
      padding: 100px 0 120px;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .hero-bg-media {
      position: absolute;
      inset: 0;
      z-index: 1;
      opacity: 0.22;
      background-image: url('/assets/images/7d4362247f5b6ba8.webp');
      background-size: cover;
      background-position: center;
      mix-blend-mode: luminosity;
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-burst-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(90deg, rgba(239, 68, 68, 0.2) 0%, rgba(249, 115, 22, 0.2) 100%);
      border: 1px solid rgba(239, 68, 68, 0.4);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 700;
      color: #fca5a5;
      margin-bottom: 24px;
    }
    .hero-burst-badge span {
      background: #ef4444;
      color: #fff;
      font-size: 11px;
      padding: 2px 6px;
      border-radius: 4px;
    }
    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 22px;
      letter-spacing: -0.8px;
    }
    .hero-title span {
      color: var(--accent);
      background: linear-gradient(120deg, #00D29E 0%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 16px;
      color: #cbd5e1;
      line-height: 1.8;
      margin-bottom: 34px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-limit-box {
      display: flex;
      align-items: center;
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      font-size: 13px;
      color: #94a3b8;
    }
    .hero-limit-box strong {
      color: #ffffff;
      font-weight: 600;
    }

    /* 首屏右侧看板卡片 */
    .hero-stage-card {
      background: rgba(15, 23, 42, 0.75);
      border: 1px solid rgba(0, 210, 158, 0.25);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      position: relative;
    }
    .hero-stage-card::before {
      content: "";
      position: absolute;
      top: -2px;
      left: 15%;
      right: 15%;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--accent), transparent);
    }
    .stage-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);
    }
    .stage-title {
      font-size: 15px;
      font-weight: 700;
      color: #f8fafc;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 10px var(--accent);
    }
    .stage-status {
      font-size: 12px;
      color: var(--accent);
      background: rgba(0, 210, 158, 0.15);
      padding: 3px 8px;
      border-radius: 4px;
    }
    .stage-metric-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 20px;
    }
    .metric-pill {
      background: rgba(255, 255, 255, 0.04);
      padding: 14px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .metric-pill .label {
      font-size: 12px;
      color: #94a3b8;
      display: block;
      margin-bottom: 4px;
    }
    .metric-pill .val {
      font-size: 22px;
      font-weight: 700;
      color: #ffffff;
      font-family: monospace;
    }
    .stage-radar-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .radar-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      padding: 10px 14px;
      border-radius: 6px;
      background: rgba(255, 255, 255, 0.02);
      border-left: 3px solid var(--accent);
    }
    .radar-item span:last-child {
      color: var(--accent);
      font-weight: 600;
    }

    /* 2. 问题陈述板块 (#about) */
    .about-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .about-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-light);
    }
    .about-visual img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .about-caption-box {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(15, 23, 42, 0.88);
      backdrop-filter: blur(8px);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      color: #ffffff;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .about-caption-box p {
      font-size: 13px;
      color: #cbd5e1;
      margin-top: 4px;
    }
    .about-content h2 {
      font-size: 30px;
      line-height: 1.35;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .tech-highlight-card {
      background: #ffffff;
      border-left: 4px solid var(--accent);
      padding: 20px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      box-shadow: var(--shadow-sm);
      margin: 24px 0;
      font-size: 15px;
      color: var(--text-main);
    }
    .about-checklist {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .about-checklist li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 15px;
      color: var(--text-muted);
    }
    .about-checklist li::before {
      content: "✓";
      color: var(--accent);
      font-weight: 800;
      background: rgba(0, 210, 158, 0.15);
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
    }

    /* 3. 核心优势六矩阵卡片区 (#features) */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 34px 28px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(0, 210, 158, 0.4);
    }
    .feature-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(0, 210, 158, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: #0f766e;
      margin-bottom: 20px;
    }
    .feature-card h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 4. 热门产品与解决方案区 (#products) */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .product-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .product-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .product-card:hover .product-thumb img {
      transform: scale(1.05);
    }
    .product-badge-float {
      position: absolute;
      top: 14px;
      right: 14px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(4px);
      color: #ffffff;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 20px;
      font-weight: 600;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .product-body {
      padding: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .product-body h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .product-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.65;
    }
    .product-spec-list {
      list-style: none;
      margin-bottom: 24px;
      padding-top: 16px;
      border-top: 1px solid var(--border-light);
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .product-spec-list li {
      font-size: 13px;
      color: #334155;
      display: flex;
      justify-content: space-between;
    }
    .product-spec-list li span:first-child {
      color: var(--text-muted);
    }
    .product-spec-list li span:last-child {
      font-weight: 600;
    }
    .product-foot-cta {
      margin-top: auto;
    }
    .product-foot-cta .btn {
      width: 100%;
    }

    /* 5. 深色全景案例与战略理念区 (#showcase) */
    .showcase-banner {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(11, 17, 32, 0.98)), url('/assets/images/4721bd9a63a2e2af.jpg') center/cover;
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      border: 1px solid var(--border-dark);
      position: relative;
      overflow: hidden;
    }
    .showcase-flex {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .showcase-info h3 {
      font-size: 28px;
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 16px;
      color: #ffffff;
    }
    .showcase-info p {
      font-size: 15px;
      color: #94a3b8;
      line-height: 1.75;
      margin-bottom: 28px;
    }
    .showcase-stat-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .stat-box-mini {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-sm);
      padding: 16px;
    }
    .stat-box-mini .val {
      font-size: 26px;
      font-weight: 800;
      color: var(--accent);
      font-family: monospace;
      margin-bottom: 4px;
    }
    .stat-box-mini .lbl {
      font-size: 12px;
      color: #cbd5e1;
    }
    .showcase-screen {
      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, 0.6);
    }
    .showcase-screen img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    /* 6. 场景化落地与操作演示 (#stories) */
    .story-card-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      margin-bottom: 60px;
    }
    .story-card-row:nth-child(even) {
      direction: rtl;
    }
    .story-card-row:nth-child(even) .story-text {
      direction: ltr;
    }
    .story-img-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-light);
    }
    .story-img-wrap img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }
    .story-text h3 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .story-text p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .story-pills {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }
    .story-pill {
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 20px;
      background: #e2e8f0;
      color: #334155;
      font-weight: 600;
    }

    /* 7. 全网核心数据统计条 (#metrics) */
    .metrics-bar {
      background: linear-gradient(90deg, #070d18 0%, #0F172A 50%, #070d18 100%);
      padding: 64px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      color: #ffffff;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item {
      padding: 0 16px;
      position: relative;
    }
    .metric-item:not(:last-child)::after {
      content: "";
      position: absolute;
      right: 0;
      top: 20%;
      height: 60%;
      width: 1px;
      background: rgba(255, 255, 255, 0.1);
    }
    .metric-number {
      font-size: 40px;
      font-weight: 800;
      color: var(--accent);
      font-family: monospace;
      margin-bottom: 8px;
      letter-spacing: -1px;
    }
    .metric-name {
      font-size: 15px;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: #94a3b8;
    }

    /* 8. 客户实证与社会认同评价区 (#reviews) */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }
    .review-stars {
      color: #f59e0b;
      font-size: 16px;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }
    .review-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 14px;
      padding-top: 16px;
      border-top: 1px solid #f1f5f9;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #0f172a;
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .review-meta h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .review-meta small {
      font-size: 12px;
      color: var(--text-light);
      display: block;
    }

    /* 9. 新闻资讯与行业动态速递 (#news) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-img-holder {
      height: 180px;
      overflow: hidden;
    }
    .news-img-holder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-img-holder img {
      transform: scale(1.05);
    }
    .news-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 12px;
    }
    .news-excerpt {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .news-action {
      margin-top: auto;
      font-size: 13px;
      font-weight: 600;
      color: #0f766e;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 10. 常见问题手风琴 (#faq) */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: rgba(0, 210, 158, 0.5);
    }
    .faq-input {
      display: none;
    }
    .faq-header {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      font-size: 16px;
      color: var(--text-main);
      user-select: none;
    }
    .faq-icon {
      font-size: 20px;
      color: var(--accent);
      transition: transform 0.3s ease;
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #fafbfc;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.75;
      padding: 0 24px;
    }
    .faq-input:checked ~ .faq-body {
      max-height: 220px;
      padding: 16px 24px 24px;
      border-top: 1px solid var(--border-light);
    }
    .faq-input:checked ~ .faq-header .faq-icon {
      transform: rotate(45deg);
    }

    /* 11. 多重安全与合规保障条 (#guarantee) */
    .guarantee-bar {
      background: #0f172a;
      padding: 50px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 16px;
      color: #ffffff;
    }
    .guarantee-icon {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: rgba(0, 210, 158, 0.15);
      border: 1px solid rgba(0, 210, 158, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 20px;
      flex-shrink: 0;
    }
    .guarantee-item h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 2px;
    }
    .guarantee-item p {
      font-size: 12px;
      color: #94a3b8;
    }

    /* 12. 底部高转化咨询与表单预留区 (#contact) */
    .contact-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 50px;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 60px;
    }
    .contact-info h3 {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .contact-info p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 30px;
    }
    .contact-direct {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .contact-row {
      display: flex;
      align-items: center;
      gap: 14px;
      font-size: 15px;
      color: var(--text-main);
    }
    .contact-row-icon {
      width: 36px;
      height: 36px;
      background: var(--bg-alt);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: 700;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: #334155;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid #cbd5e1;
      font-size: 14px;
      background: #fafbfc;
      transition: var(--transition);
    }
    .form-control:focus {
      outline: none;
      border-color: var(--accent);
      box-shadow: 0 0 0 3px var(--accent-glow);
      background: #ffffff;
    }
    .form-grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    /* 页脚 */
    .site-footer {
      background: var(--bg-footer);
      color: #94a3b8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h4 {
      font-size: 18px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.7;
      font-size: 13px;
      color: #64748b;
      margin-bottom: 20px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      padding-top: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      text-align: center;
      font-size: 12px;
      color: #475569;
    }

    /* 移动端浮动转化条 */
    .mobile-float-cta {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(15, 23, 42, 0.95);
      backdrop-filter: blur(10px);
      padding: 12px 20px;
      z-index: 999;
      box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.3);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    .mobile-float-cta .btn {
      width: 100%;
    }

    /* 响应式样式适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .feature-grid, .product-grid, .review-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
      }
      .metric-item:not(:last-child)::after {
        display: none;
      }
      .showcase-flex {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .site-header {
        height: auto;
      }
      .nav-inner {
        height: 64px;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #0f172a;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        gap: 18px;
      }
      .nav-menu.show {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-actions .btn {
        display: none;
      }
      .section {
        padding: 60px 0;
      }
      .section-title {
        font-size: 26px;
      }
      .hero-title {
        font-size: 30px;
      }
      .about-split, .story-card-row, .story-card-row:nth-child(even) {
        grid-template-columns: 1fr;
        direction: ltr;
      }
      .feature-grid, .product-grid, .review-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .metrics-grid, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .contact-wrapper {
        padding: 24px;
      }
      .form-grid-2 {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .mobile-float-cta {
        display: block;
      }
      body {
        padding-bottom: 60px;
      }
    }