:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --holo-1: #38bdf8;
      --holo-2: #818cf8;
      --holo-3: #c084fc;
      --holo-4: #f472b6;
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --accent-grad: linear-gradient(135deg, #0284c7 0%, #6366f1 50%, #ec4899 100%);
      --holo-border: linear-gradient(135deg, rgba(56,189,248,0.4), rgba(192,132,252,0.4), rgba(244,114,182,0.4));
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.1);
      --shadow-holo: 0 12px 30px -8px rgba(129, 140, 248, 0.25);
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(56, 189, 248, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 20%, rgba(192, 132, 252, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(244, 114, 182, 0.06) 0%, transparent 50%);
      background-attachment: fixed;
    }

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

    ul, ol {
      list-style: none;
    }

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

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

    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 0.875rem;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      background: var(--accent-grad);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 12px;
      padding: 4px 12px;
      border-radius: 999px;
      background-color: rgba(99, 102, 241, 0.08);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      transition: all 0.3s ease;
    }

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

    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .logo-box {
      width: 140px;
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
    }

    .nav-links a:hover {
      color: var(--primary);
      background: rgba(99, 102, 241, 0.05);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 999px;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid transparent;
    }

    .btn-holo {
      background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #db2777 100%);
      color: #ffffff !important;
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
    }

    .btn-holo:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid #cbd5e1;
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #f8fafc;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--text-main);
    }

    /* Hero 首屏 - 无图片，纯镭射与布局 */
    .hero-section {
      padding: 90px 0 80px;
      position: relative;
      text-align: center;
      background: radial-gradient(circle at 50% -20%, rgba(99, 102, 241, 0.15), rgba(244, 114, 182, 0.08) 50%, transparent 80%);
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 999px;
      background: #ffffff;
      border: 1px solid rgba(129, 140, 248, 0.3);
      box-shadow: var(--shadow-sm);
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 24px;
    }

    .hero-badge-pulse {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
    }

    .hero-h1 {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -0.5px;
      color: #0f172a;
      max-width: 900px;
      margin: 0 auto 24px;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto 36px;
      font-weight: 400;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-main-btn {
      font-size: 1.1rem;
      padding: 14px 36px;
    }

    .hero-kpis {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .kpi-card {
      background: rgba(255, 255, 255, 0.75);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.8);
      border-radius: var(--radius-md);
      padding: 24px 16px;
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
    }

    .kpi-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--accent-grad);
    }

    .kpi-val {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      display: block;
      margin-bottom: 4px;
    }

    .kpi-lbl {
      font-size: 0.875rem;
      color: var(--text-light);
    }

    /* 平台核心模型跑马灯标签 */
    .model-tags-section {
      padding: 24px 0;
      background: #ffffff;
      border-top: 1px solid #e2e8f0;
      border-bottom: 1px solid #e2e8f0;
    }

    .model-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-tag {
      padding: 6px 14px;
      border-radius: 999px;
      background: #f1f5f9;
      font-size: 0.85rem;
      font-weight: 600;
      color: #334155;
      border: 1px solid #e2e8f0;
      transition: all 0.2s;
    }

    .model-tag:hover {
      background: #eef2ff;
      color: var(--primary);
      border-color: #c7d2fe;
      transform: translateY(-1px);
    }

    /* 镭射卡片网格通用 */
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .cards-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .cards-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .holo-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
    }

    .holo-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-holo);
      border-color: rgba(129, 140, 248, 0.4);
    }

    .card-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(56, 189, 248, 0.1), rgba(99, 102, 241, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      margin-bottom: 18px;
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #1e293b;
    }

    .card-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 场景矩阵卡片 */
    .scene-item {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .scene-meta {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      color: #6366f1;
      background: #eef2ff;
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 10px;
      align-self: flex-start;
    }

    /* 案例图片展示 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .showcase-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
    }

    .showcase-img-wrap {
      width: 100%;
      height: 220px;
      overflow: hidden;
      background: #f1f5f9;
    }

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

    .showcase-card:hover .showcase-img-wrap img {
      transform: scale(1.04);
    }

    .showcase-body {
      padding: 20px;
    }

    .showcase-tag {
      font-size: 0.8rem;
      font-weight: 600;
      color: #0284c7;
      margin-bottom: 6px;
    }

    /* 对比评测表格 */
    .eval-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-md);
    }

    .eval-highlight-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #eef2ff 0%, #fdf2f8 100%);
      padding: 24px 32px;
      border-radius: var(--radius-md);
      margin-bottom: 32px;
      border: 1px solid rgba(99, 102, 241, 0.2);
    }

    .eval-score-badge {
      font-size: 2.2rem;
      font-weight: 900;
      color: #4f46e5;
    }

    .eval-table-wrap {
      overflow-x: auto;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #e2e8f0;
      font-size: 0.95rem;
    }

    .eval-table th {
      background: #f8fafc;
      font-weight: 700;
      color: #1e293b;
    }

    .eval-table td.col-brand {
      font-weight: 700;
      color: var(--primary);
      background: rgba(99, 102, 241, 0.03);
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 10px;
      border-radius: 999px;
      font-size: 0.8rem;
      font-weight: 600;
    }

    .status-yes {
      background: #ecfdf5;
      color: #059669;
    }

    .status-no {
      background: #fef2f2;
      color: #dc2626;
    }

    /* 流程步骤 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .flow-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
      position: relative;
    }

    .flow-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--accent-grad);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 16px;
    }

    /* 客户评价 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testimonial-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-stars {
      color: #f59e0b;
      font-size: 1.1rem;
      margin-bottom: 12px;
    }

    .testimonial-content {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .author-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, #a5b4fc, #fbcfe8);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #3730a3;
      font-size: 0.9rem;
    }

    .author-name {
      font-weight: 700;
      font-size: 0.925rem;
      color: #0f172a;
    }

    .author-role {
      font-size: 0.775rem;
      color: var(--text-light);
    }

    /* FAQ 伸缩 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid #e2e8f0;
      overflow: hidden;
      transition: all 0.2s;
    }

    .faq-item.active {
      border-color: #a5b4fc;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.08);
    }

    .faq-question {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      font-size: 1rem;
      color: #1e293b;
      user-select: none;
    }

    .faq-toggle {
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: #6366f1;
      transition: transform 0.2s ease;
    }

    .faq-item.active .faq-toggle {
      transform: rotate(45deg);
    }

    .faq-answer {
      padding: 0 24px 20px;
      color: var(--text-muted);
      font-size: 0.925rem;
      line-height: 1.65;
      display: none;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 表单与联系区 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      align-items: start;
    }

    .contact-info-panel {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 32px;
      border: 1px solid #e2e8f0;
    }

    .qr-card-box {
      margin-top: 24px;
      padding: 20px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
      border: 1px dashed #cbd5e1;
      text-align: center;
    }

    .qr-img-wrap {
      width: 140px;
      margin: 0 auto 12px;
    }

    .contact-form-panel {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 36px;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: #334155;
      margin-bottom: 8px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid #cbd5e1;
      font-size: 0.95rem;
      background: #f8fafc;
      color: #0f172a;
      outline: none;
      transition: border-color 0.2s, background-color 0.2s;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: #6366f1;
      background: #ffffff;
    }

    .form-textarea {
      resize: vertical;
      min-height: 110px;
    }

    /* 文章列表 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .article-item {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-title-link {
      font-weight: 700;
      font-size: 1.05rem;
      color: #0f172a;
      margin-bottom: 10px;
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .article-title-link:hover {
      color: var(--primary);
    }

    .article-date {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h3 {
      color: #ffffff;
      font-size: 1.25rem;
      margin-bottom: 12px;
    }

    .footer-links-col h4 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 16px;
    }

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

    .footer-links-list a {
      color: #94a3b8;
      font-size: 0.9rem;
    }

    .footer-links-list a:hover {
      color: #38bdf8;
    }

    .friend-links-box {
      border-top: 1px solid #1e293b;
      padding: 24px 0;
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
    }

    .friend-links-box span {
      font-size: 0.875rem;
      font-weight: 600;
      color: #cbd5e1;
    }

    .friend-links-box a {
      font-size: 0.875rem;
      color: #94a3b8;
    }

    .friend-links-box a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      color: #4f46e5;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
      border: 1px solid #e2e8f0;
      cursor: pointer;
      transition: all 0.2s;
    }

    .float-btn:hover {
      transform: scale(1.08);
      background: #f8fafc;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .cards-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid-3, .showcase-grid, .testimonials-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 2.1rem;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid #e2e8f0;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-kpis {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid-3, .cards-grid-2, .showcase-grid, .testimonials-grid, .flow-steps, .articles-grid {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .eval-highlight-banner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
      }
    }