:root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --accent-coral: #ff4d4f;
      --accent-yellow: #ffb800;
      --accent-teal: #00b96b;
      --accent-purple: #722ed1;
      --bg-base: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border: #e2e8f0;
      --border-accent: #cbd5e1;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 20px 35px -8px rgba(15, 23, 42, 0.12);
      --radius: 12px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background: radial-gradient(circle at 10% 10%, rgba(37, 99, 235, 0.03) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(255, 77, 79, 0.03) 0%, transparent 40%),
                  var(--bg-base);
      color: var(--text-main);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid #0f172a;
      box-shadow: 0 4px 0 rgba(15, 23, 42, 0.05);
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .brand-area {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }

    .brand-text {
      font-size: 22px;
      font-weight: 900;
      letter-spacing: -0.5px;
      color: #0f172a;
    }

    .brand-tag {
      background: var(--accent-coral);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      margin-left: 6px;
    }

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

    .nav-links li a {
      text-decoration: none;
      color: var(--text-main);
      font-size: 14px;
      font-weight: 600;
      padding: 8px 12px;
      border-radius: 6px;
      transition: all 0.2s ease;
      display: inline-block;
    }

    .nav-links li a:hover {
      background: #eff6ff;
      color: var(--primary);
    }

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

    .btn-portal {
      background: #0f172a;
      color: #fff !important;
      font-weight: 700;
      padding: 10px 20px;
      border-radius: 8px;
      text-decoration: none;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: 2px solid #0f172a;
      box-shadow: 3px 3px 0 var(--accent-yellow);
      transition: all 0.15s ease;
    }

    .btn-portal:hover {
      transform: translate(-2px, -2px);
      box-shadow: 5px 5px 0 var(--accent-yellow);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 2px solid #0f172a;
      padding: 6px 10px;
      border-radius: 6px;
      font-weight: bold;
      cursor: pointer;
    }

    /* 撞色公共元素 */
    .section-head {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .badge-pill {
      display: inline-block;
      font-size: 12px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 6px 16px;
      border-radius: 20px;
      margin-bottom: 14px;
      border: 1.5px solid #0f172a;
      box-shadow: 2px 2px 0 #0f172a;
    }

    .badge-blue { background: #dbeafe; color: #1e40af; }
    .badge-coral { background: #ffe4e6; color: #be123c; }
    .badge-yellow { background: #fef08a; color: #854d0e; }
    .badge-green { background: #dcfce7; color: #166534; }

    .section-title {
      font-size: 34px;
      font-weight: 900;
      color: #0f172a;
      line-height: 1.3;
      margin-bottom: 12px;
    }

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

    section {
      padding: 70px 0;
      border-bottom: 1px solid var(--border);
    }

    /* Hero 首屏 - 无任何图片 */
    .hero-section {
      padding: 80px 0 90px 0;
      background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 50%, #fff7ed 100%);
      position: relative;
      overflow: hidden;
      border-bottom: 3px solid #0f172a;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 50px;
      align-items: center;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-pretitle {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fef08a;
      color: #0f172a;
      font-size: 13px;
      font-weight: 800;
      padding: 6px 14px;
      border: 2px solid #0f172a;
      border-radius: 6px;
      box-shadow: 3px 3px 0 #0f172a;
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 42px;
      font-weight: 950;
      line-height: 1.2;
      color: #0f172a;
      margin-bottom: 22px;
      letter-spacing: -1px;
    }

    .hero-title span {
      background: linear-gradient(120deg, #2563eb, #ff4d4f);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 18px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 32px;
      font-weight: 500;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 40px;
    }

    .btn-main-action {
      background: var(--accent-coral);
      color: #ffffff;
      font-size: 16px;
      font-weight: 800;
      padding: 15px 34px;
      border-radius: 10px;
      text-decoration: none;
      border: 2.5px solid #0f172a;
      box-shadow: 4px 4px 0 #0f172a;
      transition: all 0.15s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-main-action:hover {
      transform: translate(-3px, -3px);
      box-shadow: 7px 7px 0 #0f172a;
      background: #e03131;
    }

    .btn-sub-action {
      background: #ffffff;
      color: #0f172a;
      font-size: 16px;
      font-weight: 700;
      padding: 14px 28px;
      border-radius: 10px;
      text-decoration: none;
      border: 2.5px solid #0f172a;
      box-shadow: 4px 4px 0 #0f172a;
      transition: all 0.15s ease;
    }

    .btn-sub-action:hover {
      background: #f8fafc;
      transform: translate(-2px, -2px);
      box-shadow: 6px 6px 0 #0f172a;
    }

    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 2px dashed #cbd5e1;
      padding-top: 24px;
    }

    .stat-box strong {
      font-size: 28px;
      font-weight: 900;
      color: #0f172a;
      display: block;
      line-height: 1.1;
    }

    .stat-box span {
      font-size: 13px;
      color: #64748b;
      font-weight: 600;
    }

    /* 首屏纯CSS高能卡片展台 - 绝无图片 */
    .hero-terminal {
      background: #ffffff;
      border: 3px solid #0f172a;
      border-radius: 16px;
      box-shadow: 10px 10px 0 #0f172a;
      padding: 24px;
      position: relative;
    }

    .terminal-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 2px solid #0f172a;
      padding-bottom: 12px;
      margin-bottom: 18px;
    }

    .terminal-dots {
      display: flex;
      gap: 6px;
    }

    .tdot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      border: 1.5px solid #0f172a;
    }

    .tdot-red { background: #ff4d4f; }
    .tdot-yellow { background: #ffb800; }
    .tdot-green { background: #00b96b; }

    .terminal-badge {
      font-size: 11px;
      font-weight: 800;
      background: #eff6ff;
      color: var(--primary);
      padding: 3px 8px;
      border-radius: 4px;
      border: 1px solid #93c5fd;
    }

    .terminal-feed {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .feed-card {
      background: #f8fafc;
      border: 2px solid #e2e8f0;
      border-radius: 10px;
      padding: 14px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.2s ease;
    }

    .feed-card:hover {
      border-color: #0f172a;
      background: #ffffff;
      transform: translateX(4px);
    }

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

    .feed-icon {
      width: 38px;
      height: 38px;
      border-radius: 8px;
      border: 2px solid #0f172a;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 14px;
      color: #fff;
    }

    .bg-icon-blue { background: #2563eb; }
    .bg-icon-coral { background: #ff4d4f; }
    .bg-icon-purple { background: #722ed1; }
    .bg-icon-teal { background: #00b96b; }

    .feed-title {
      font-weight: 800;
      font-size: 14px;
      color: #0f172a;
    }

    .feed-desc {
      font-size: 12px;
      color: #64748b;
    }

    .feed-tag {
      font-size: 12px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 6px;
      border: 1.5px solid #0f172a;
    }

    /* 平台支持模型跑马灯/标签云 */
    .model-strip-section {
      background: #0f172a;
      color: #ffffff;
      padding: 30px 0;
      overflow: hidden;
    }

    .strip-wrapper {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .strip-label {
      white-space: nowrap;
      font-weight: 900;
      font-size: 14px;
      background: var(--accent-yellow);
      color: #0f172a;
      padding: 6px 14px;
      border-radius: 6px;
    }

    .model-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .model-chip {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #e2e8f0;
      font-size: 13px;
      padding: 4px 12px;
      border-radius: 20px;
      font-weight: 600;
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      background: #2563eb;
      color: #fff;
      border-color: #2563eb;
    }

    /* 卡片通用 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

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

    .feature-card {
      background: #ffffff;
      border: 2px solid #0f172a;
      border-radius: 14px;
      padding: 24px;
      box-shadow: 4px 4px 0 #0f172a;
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
    }

    .feature-card:hover {
      transform: translate(-3px, -3px);
      box-shadow: 8px 8px 0 #0f172a;
    }

    .card-badge {
      align-self: flex-start;
      font-size: 11px;
      font-weight: 800;
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 12px;
      border: 1px solid #0f172a;
    }

    .card-title {
      font-size: 18px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 关于我们 */
    .about-box {
      background: #fff;
      border: 3px solid #0f172a;
      border-radius: 16px;
      box-shadow: 8px 8px 0 #0f172a;
      padding: 40px;
    }

    .about-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-img-wrap {
      border: 2.5px solid #0f172a;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 4px 4px 0 #0f172a;
    }

    .about-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 流程与步骤 */
    .step-card {
      background: #ffffff;
      border: 2px solid #0f172a;
      border-radius: 12px;
      padding: 24px;
      box-shadow: 4px 4px 0 #0f172a;
      position: relative;
    }

    .step-num {
      position: absolute;
      top: -14px;
      right: 18px;
      background: var(--accent-coral);
      color: #fff;
      font-size: 14px;
      font-weight: 900;
      padding: 2px 10px;
      border-radius: 20px;
      border: 2px solid #0f172a;
    }

    /* 对比评测高亮专区 */
    .eval-box {
      background: #ffffff;
      border: 3px solid #0f172a;
      border-radius: 16px;
      padding: 34px;
      box-shadow: 8px 8px 0 #0f172a;
      margin-bottom: 30px;
    }

    .score-banner {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      background: #eff6ff;
      border: 2px solid #0f172a;
      border-radius: 12px;
      padding: 24px 30px;
      margin-bottom: 30px;
    }

    .score-left h3 {
      font-size: 22px;
      font-weight: 900;
      color: #0f172a;
      margin-bottom: 6px;
    }

    .stars-render {
      color: #ff9800;
      font-size: 22px;
      letter-spacing: 4px;
    }

    .score-val-wrap {
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .score-val {
      font-size: 54px;
      font-weight: 950;
      color: #2563eb;
      line-height: 1;
    }

    .score-total {
      font-size: 20px;
      font-weight: 700;
      color: #64748b;
    }

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

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

    .eval-table th, .eval-table td {
      padding: 14px 18px;
      border: 1.5px solid #0f172a;
      font-size: 14px;
    }

    .eval-table th {
      background: #f8fafc;
      font-weight: 850;
      color: #0f172a;
    }

    .eval-table tr.highlight-row td {
      background: #f0fdf4;
      font-weight: 700;
    }

    .tag-check {
      color: #16a34a;
      font-weight: 900;
    }

    .tag-cross {
      color: #dc2626;
      font-weight: 700;
    }

    /* 需求匹配器 */
    .matcher-card {
      background: #f8fafc;
      border: 2px solid #0f172a;
      border-radius: 12px;
      padding: 24px;
      box-shadow: 4px 4px 0 #0f172a;
      cursor: pointer;
      transition: all 0.15s ease;
    }

    .matcher-card.active, .matcher-card:hover {
      background: #fff;
      border-color: #2563eb;
      box-shadow: 6px 6px 0 #2563eb;
    }

    /* FAQ 折叠面板 */
    .faq-item {
      background: #ffffff;
      border: 2px solid #0f172a;
      border-radius: 10px;
      margin-bottom: 14px;
      box-shadow: 3px 3px 0 #0f172a;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 22px;
      font-weight: 800;
      font-size: 16px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #fff;
    }

    .faq-question:hover {
      background: #f8fafc;
    }

    .faq-icon {
      font-size: 18px;
      font-weight: 900;
      transition: transform 0.2s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 22px 18px 22px;
      font-size: 14px;
      color: #475569;
      line-height: 1.7;
      border-top: 1px dashed #e2e8f0;
      padding-top: 14px;
    }

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

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

    /* 客户评价卡片 */
    .review-card {
      background: #ffffff;
      border: 2px solid #0f172a;
      border-radius: 12px;
      padding: 22px;
      box-shadow: 4px 4px 0 #0f172a;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 2px solid #0f172a;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      color: #fff;
    }

    .review-meta h4 {
      font-size: 15px;
      font-weight: 800;
      color: #0f172a;
    }

    .review-meta p {
      font-size: 12px;
      color: #64748b;
    }

    .review-text {
      font-size: 14px;
      color: #334155;
      line-height: 1.6;
    }

    /* 案例展示 */
    .case-card {
      background: #fff;
      border: 2px solid #0f172a;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 4px 4px 0 #0f172a;
    }

    .case-img-box {
      width: 100%;
      aspect-ratio: 16/9;
      background: #e2e8f0;
      overflow: hidden;
      border-bottom: 2px solid #0f172a;
    }

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

    .case-body {
      padding: 18px;
    }

    /* 行业资讯 & 最新文章 */
    .article-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item {
      background: #ffffff;
      border: 2px solid #0f172a;
      border-radius: 8px;
      padding: 14px 18px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      text-decoration: none;
      color: #0f172a;
      box-shadow: 2px 2px 0 #0f172a;
      transition: all 0.15s ease;
    }

    .article-item:hover {
      transform: translateX(4px);
      background: #eff6ff;
      border-color: #2563eb;
    }

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

    .article-arrow {
      color: #2563eb;
      font-weight: 900;
    }

    /* 需求表单 */
    .form-box {
      background: #ffffff;
      border: 3px solid #0f172a;
      border-radius: 16px;
      padding: 34px;
      box-shadow: 8px 8px 0 #0f172a;
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 6px;
      color: #0f172a;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 2px solid #0f172a;
      border-radius: 8px;
      font-size: 14px;
      background: #f8fafc;
      color: #0f172a;
      outline: none;
      transition: all 0.2s ease;
    }

    .form-control:focus {
      background: #ffffff;
      border-color: #2563eb;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    }

    .btn-submit {
      width: 100%;
      background: var(--accent-coral);
      color: #fff;
      font-size: 16px;
      font-weight: 800;
      padding: 14px;
      border: 2px solid #0f172a;
      border-radius: 8px;
      cursor: pointer;
      box-shadow: 4px 4px 0 #0f172a;
      transition: all 0.15s ease;
    }

    .btn-submit:hover {
      transform: translate(-2px, -2px);
      box-shadow: 6px 6px 0 #0f172a;
    }

    /* 联系与客服 */
    .contact-card-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .contact-item {
      background: #ffffff;
      border: 2px solid #0f172a;
      border-radius: 12px;
      padding: 20px;
      text-align: center;
      box-shadow: 4px 4px 0 #0f172a;
    }

    .contact-icon-box {
      width: 48px;
      height: 48px;
      margin: 0 auto 12px auto;
      background: #eff6ff;
      border: 2px solid #0f172a;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 20px;
    }

    .qr-container {
      width: 140px;
      height: 140px;
      margin: 12px auto 0 auto;
      border: 2px solid #0f172a;
      border-radius: 8px;
      overflow: hidden;
      padding: 4px;
      background: #fff;
    }

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

    /* 加盟代理专区 */
    .agent-banner {
      background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
      color: #ffffff;
      border: 3px solid #0f172a;
      border-radius: 16px;
      padding: 40px;
      box-shadow: 8px 8px 0 var(--accent-coral);
    }

    .agent-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
      align-items: center;
    }

    .agent-list {
      list-style: none;
      margin: 20px 0;
    }

    .agent-list li {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 15px;
    }

    .agent-list li span {
      background: var(--accent-teal);
      color: #0f172a;
      font-weight: 900;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 3px solid #0f172a;
      padding: 50px 0 30px 0;
      margin-top: auto;
    }

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

    .footer-col h4 {
      font-size: 16px;
      font-weight: 850;
      color: #0f172a;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

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

    .footer-links-list li {
      margin-bottom: 8px;
    }

    .footer-links-list li a {
      color: #475569;
      text-decoration: none;
      font-size: 14px;
      transition: color 0.15s ease;
    }

    .footer-links-list li a:hover {
      color: #2563eb;
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links-wrap a {
      background: #f1f5f9;
      color: #334155;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 13px;
      text-decoration: none;
      border: 1px solid #cbd5e1;
      transition: all 0.2s ease;
    }

    .friend-links-wrap a:hover {
      background: #0f172a;
      color: #ffffff;
      border-color: #0f172a;
    }

    .footer-bottom {
      border-top: 1.5px solid #e2e8f0;
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #64748b;
    }

    /* 浮动客服入口 */
    .float-service {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #ffffff;
      border: 2px solid #0f172a;
      box-shadow: 3px 3px 0 #0f172a;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      text-decoration: none;
      color: #0f172a;
      font-weight: 900;
      font-size: 14px;
      transition: all 0.15s ease;
    }

    .float-btn:hover {
      transform: translate(-2px, -2px);
      box-shadow: 5px 5px 0 #0f172a;
      background: #fef08a;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-grid, .about-split, .agent-grid {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-card-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 2px solid #0f172a;
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .hero-title {
        font-size: 30px;
      }
      .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: 1fr;
      }
      .contact-card-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats-row {
        grid-template-columns: 1fr;
      }
    }