:root {
      --neon-cyan: #00d2ff;
      --neon-pink: #ff2a85;
      --neon-purple: #7928ca;
      --neon-amber: #ff9900;
      --neon-green: #00f076;
      --bg-page: #f8fafc;
      --bg-surface: #ffffff;
      --bg-subtle: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: rgba(226, 232, 240, 0.8);
      --neon-gradient: linear-gradient(135deg, #00d2ff 0%, #7928ca 50%, #ff2a85 100%);
      --glow-shadow: 0 10px 25px -5px rgba(0, 210, 255, 0.25), 0 8px 10px -6px rgba(121, 40, 202, 0.2);
      --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --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: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      position: relative;
    }

    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: 
        radial-gradient(circle at 10% 20%, rgba(0, 210, 255, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(255, 42, 133, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(121, 40, 202, 0.03) 0%, transparent 50%);
      pointer-events: none;
      z-index: 0;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
      position: relative;
      z-index: 1;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      z-index: 1000;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-wrap .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      text-decoration: none;
      font-weight: 600;
      font-size: 0.93rem;
      color: var(--text-muted);
      border-radius: 6px;
      transition: var(--transition);
      position: relative;
    }

    .nav-links li a:hover {
      color: var(--neon-purple);
      background: rgba(121, 40, 202, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.95rem;
      text-decoration: none;
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
      outline: none;
      text-align: center;
      white-space: nowrap;
    }

    .btn-neon {
      background: var(--neon-gradient);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(0, 210, 255, 0.35);
    }

    .btn-neon:hover {
      opacity: 0.95;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 42, 133, 0.4);
    }

    .btn-outline {
      border: 1px solid rgba(121, 40, 202, 0.3);
      color: var(--neon-purple);
      background: rgba(255, 255, 255, 0.8);
    }

    .btn-outline:hover {
      background: rgba(121, 40, 202, 0.08);
      border-color: var(--neon-purple);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* 首屏 Hero 区（严格无图片） */
    .hero-section {
      padding: 90px 0 60px;
      background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
      position: relative;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 999px;
      background: rgba(0, 210, 255, 0.1);
      border: 1px solid rgba(0, 210, 255, 0.3);
      margin-bottom: 24px;
    }

    .neon-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--neon-pink);
      box-shadow: 0 0 10px var(--neon-pink);
      animation: pulseDot 2s infinite;
    }

    @keyframes pulseDot {
      0% { transform: scale(0.9); opacity: 0.8; }
      50% { transform: scale(1.3); opacity: 1; }
      100% { transform: scale(0.9); opacity: 0.8; }
    }

    .hero-badge-text {
      font-size: 0.85rem;
      font-weight: 700;
      color: #0284c7;
      letter-spacing: 0.5px;
    }

    .hero-layout {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }

    .hero-title {
      font-size: clamp(2rem, 4.5vw, 3rem);
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .neon-text-glow {
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
    }

    .hero-buttons {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .metric-card {
      background: #ffffff;
      padding: 20px 16px;
      border-radius: 16px;
      border: 1px solid rgba(0, 210, 255, 0.2);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      position: relative;
    }

    .metric-card::after {
      content: "";
      position: absolute;
      inset: -1px;
      border-radius: 16px;
      background: var(--neon-gradient);
      z-index: -1;
      opacity: 0;
      transition: var(--transition);
    }

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

    .metric-card:hover::after {
      opacity: 0.3;
    }

    .metric-val {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
    }

    .metric-val span {
      font-size: 1.2rem;
      color: var(--neon-pink);
    }

    .metric-label {
      font-size: 0.85rem;
      color: var(--text-light);
      font-weight: 500;
    }

    /* 模块通用样式 */
    .section {
      padding: 80px 0;
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 50px;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 10px;
    }

    .section-title {
      font-size: clamp(1.6rem, 3vw, 2.3rem);
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 支持模型生态条 */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .model-pill {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: 999px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-muted);
      box-shadow: 0 2px 6px rgba(0,0,0,0.03);
      transition: var(--transition);
      cursor: default;
    }

    .model-pill:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-purple);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(0, 210, 255, 0.2);
    }

    /* 网格卡片系统 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
      align-items: center;
    }

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

    .feature-card {
      background: #ffffff;
      border-radius: 16px;
      padding: 30px 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      border-color: rgba(121, 40, 202, 0.4);
      box-shadow: var(--glow-shadow);
    }

    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(0,210,255,0.1), rgba(121,40,202,0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 20px;
      border: 1px solid rgba(0,210,255,0.2);
    }

    .feature-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .feature-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }

    .feature-badge {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--neon-purple);
      background: rgba(121, 40, 202, 0.08);
      padding: 4px 10px;
      border-radius: 6px;
      align-self: flex-start;
    }

    /* 场景矩阵列表 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }

    .scenario-item {
      background: #ffffff;
      padding: 22px;
      border-radius: 14px;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .scenario-item:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 6px 18px rgba(0, 210, 255, 0.12);
      transform: translateY(-3px);
    }

    .scenario-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .scenario-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--neon-cyan);
    }

    .scenario-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 图片展示区 */
    .media-card {
      background: #ffffff;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      transition: var(--transition);
    }

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

    .media-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #e2e8f0;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .media-img-wrap.aspect-square {
      aspect-ratio: 1 / 1;
    }

    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: var(--transition);
    }

    .media-card:hover .media-img-wrap img {
      transform: scale(1.03);
    }

    .media-body {
      padding: 20px;
    }

    .media-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .media-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 对比评测表格与卡片 */
    .benchmark-wrap {
      background: #ffffff;
      border-radius: 20px;
      border: 1px solid rgba(121, 40, 202, 0.2);
      box-shadow: var(--glow-shadow);
      overflow: hidden;
      padding: 36px 30px;
      margin-bottom: 40px;
    }

    .score-banner {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding-bottom: 28px;
      margin-bottom: 28px;
      border-bottom: 1px dashed rgba(121, 40, 202, 0.2);
    }

    .score-left {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-number {
      font-size: 3.5rem;
      font-weight: 900;
      line-height: 1;
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .score-info h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .stars {
      color: #f59e0b;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .comparison-table th,
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .comparison-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .comparison-table td:nth-child(2) {
      font-weight: 700;
      color: var(--neon-purple);
      background: rgba(121, 40, 202, 0.02);
    }

    .comparison-table td:nth-child(3) {
      color: var(--text-light);
    }

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

    .step-card {
      background: #ffffff;
      padding: 26px 20px;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      position: relative;
      transition: var(--transition);
    }

    .step-card:hover {
      border-color: var(--neon-pink);
      transform: translateY(-4px);
    }

    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--neon-gradient);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 18px;
    }

    .step-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

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

    .testimonial-card {
      background: #ffffff;
      padding: 28px;
      border-radius: 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .testimonial-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--glow-shadow);
      border-color: rgba(0, 210, 255, 0.4);
    }

    .testimonial-quote {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      position: relative;
    }

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

    .user-avatar-initial {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }

    .user-details h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-details span {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 手风琴 */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--neon-purple);
      box-shadow: 0 4px 15px rgba(121, 40, 202, 0.08);
    }

    .faq-question {
      width: 100%;
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: transparent;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      text-align: left;
      cursor: pointer;
    }

    .faq-icon {
      font-size: 1.3rem;
      color: var(--neon-purple);
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #fbfcfe;
    }

    .faq-answer-inner {
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 表单与需求匹配 */
    .form-section-inner {
      background: #ffffff;
      border-radius: 20px;
      border: 1px solid var(--border-color);
      box-shadow: var(--glow-shadow);
      padding: 40px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .form-grid.full-col {
      grid-template-columns: 1fr;
      margin-top: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group label {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border-radius: 10px;
      border: 1px solid var(--border-color);
      background: #f8fafc;
      color: var(--text-main);
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: var(--neon-purple);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(121, 40, 202, 0.15);
    }

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

    /* 资讯与百科文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .article-item {
      background: #ffffff;
      padding: 22px;
      border-radius: 14px;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-item:hover {
      border-color: var(--neon-cyan);
      box-shadow: var(--card-shadow);
      transform: translateY(-3px);
    }

    .article-tag {
      font-size: 0.78rem;
      color: #0284c7;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .article-link {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      text-decoration: none;
      line-height: 1.45;
      margin-bottom: 12px;
      transition: color 0.2s;
    }

    .article-link:hover {
      color: var(--neon-purple);
    }

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

    /* 代理加盟政策条 */
    .agent-banner {
      background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
      color: #ffffff;
      border-radius: 20px;
      padding: 44px 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      position: relative;
      overflow: hidden;
    }

    .agent-banner::before {
      content: "";
      position: absolute;
      top: -50px;
      right: -50px;
      width: 200px;
      height: 200px;
      background: var(--neon-gradient);
      opacity: 0.25;
      filter: blur(50px);
      border-radius: 50%;
    }

    .agent-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: #ffffff;
    }

    .agent-content p {
      font-size: 1rem;
      color: #94a3b8;
      max-width: 600px;
    }

    /* 底部专属统一规范 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      position: relative;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

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

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-col p {
      font-size: 0.9rem;
      line-height: 1.7;
      margin-bottom: 12px;
    }

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

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

    .footer-links li a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.9rem;
      transition: color 0.2s;
    }

    .footer-links li a:hover {
      color: var(--neon-cyan);
    }

    .qr-box {
      width: 120px;
      height: 120px;
      background: #ffffff;
      padding: 6px;
      border-radius: 10px;
      margin-top: 10px;
      display: inline-block;
    }

    .qr-box img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      display: block;
    }

    .friend-links-box {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 24px 0;
      margin-bottom: 24px;
    }

    .friend-links-box span {
      font-weight: 700;
      color: #ffffff;
      margin-right: 14px;
      font-size: 0.9rem;
    }

    .friend-links-box a {
      color: #94a3b8;
      text-decoration: none;
      margin-right: 16px;
      font-size: 0.88rem;
      transition: color 0.2s;
    }

    .friend-links-box a:hover {
      color: var(--neon-pink);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 悬浮工具条 */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      color: var(--text-main);
      font-size: 1.2rem;
      cursor: pointer;
      transition: var(--transition);
    }

    .float-btn:hover {
      background: var(--neon-cyan);
      color: #ffffff;
      transform: scale(1.1);
      box-shadow: 0 6px 20px rgba(0, 210, 255, 0.4);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .grid-3, .grid-4, .testimonials-grid, .articles-grid, .steps-grid, .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-2 {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .agent-banner {
        flex-direction: column;
        text-align: center;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 12px 10px;
      }
      .grid-3, .grid-4, .testimonials-grid, .articles-grid, .steps-grid, .hero-metrics, .form-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .form-section-inner {
        padding: 24px 16px;
      }
    }