:root {
      --primary: #7928ca;
      --primary-light: #9d4edd;
      --primary-dark: #4b168a;
      --accent-cyan: #00d2ff;
      --accent-magenta: #e040fb;
      --bg-page: #f8f6fc;
      --bg-surface: #ffffff;
      --bg-glass: rgba(255, 255, 255, 0.92);
      --text-main: #1f1a2e;
      --text-muted: #5e5672;
      --border-color: #e9e2f5;
      --shadow-sm: 0 4px 12px rgba(121, 40, 202, 0.06);
      --shadow-md: 0 10px 25px rgba(121, 40, 202, 0.1);
      --shadow-hover: 0 16px 36px rgba(121, 40, 202, 0.16);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s ease;
    }

    * {
      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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(157, 78, 221, 0.07) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 210, 255, 0.05) 0%, transparent 45%);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

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

    .ai-container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: var(--bg-glass);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }

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

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

    .brand-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
      line-height: 1.2;
    }

    .brand-tag {
      font-size: 0.72rem;
      color: var(--primary-light);
      font-weight: 600;
      letter-spacing: 0.5px;
    }

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

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: rgba(121, 40, 202, 0.08);
    }

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

    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 18px;
      font-size: 0.9rem;
      font-weight: 600;
      color: #fff;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
      border-radius: 30px;
      box-shadow: 0 4px 14px rgba(121, 40, 202, 0.3);
      transition: var(--transition);
    }

    .btn-portal:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(121, 40, 202, 0.45);
      color: #ffffff;
    }

    .menu-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* 首屏 Hero (无任何图片，纯CSS科技感) */
    .hero-section {
      position: relative;
      padding: 90px 0 80px;
      overflow: hidden;
      background: linear-gradient(180deg, #f4edff 0%, #faf8fe 100%);
      border-bottom: 1px solid var(--border-color);
    }

    .hero-deco-ring {
      position: absolute;
      top: -120px;
      right: -80px;
      width: 480px;
      height: 480px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(168, 85, 247, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
      pointer-events: none;
    }

    .hero-deco-ring-2 {
      position: absolute;
      bottom: -60px;
      left: -60px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(0, 210, 255, 0.12) 0%, rgba(255, 255, 255, 0) 70%);
      pointer-events: none;
    }

    .hero-content {
      text-align: center;
      max-width: 880px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary-dark);
      background: rgba(121, 40, 202, 0.1);
      border: 1px solid rgba(121, 40, 202, 0.22);
      border-radius: 30px;
      margin-bottom: 24px;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-magenta);
      box-shadow: 0 0 8px var(--accent-magenta);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%, 100% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.3); opacity: 0.6; }
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 850;
      line-height: 1.25;
      color: #1a0b36;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #6a11cb 0%, #9d4edd 50%, #2575fc 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 36px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 48px;
    }

    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, #7928ca 0%, #b83280 100%);
      border-radius: 40px;
      box-shadow: 0 8px 24px rgba(121, 40, 202, 0.35);
      transition: var(--transition);
    }

    .btn-hero-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 30px rgba(121, 40, 202, 0.45);
      color: #ffffff;
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 30px;
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--primary-dark);
      background: #ffffff;
      border: 1px solid rgba(121, 40, 202, 0.28);
      border-radius: 40px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .btn-hero-secondary:hover {
      background: #fdfaff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* 纯CSS首屏科技数据方阵 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 20px;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid rgba(121, 40, 202, 0.12);
      border-radius: var(--radius-md);
      padding: 22px 16px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--accent-magenta));
    }

    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(121, 40, 202, 0.3);
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 4px;
      line-height: 1.2;
    }

    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用区块排版 */
    .section-wrap {
      padding: 85px 0;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 52px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1px;
      background: rgba(121, 40, 202, 0.08);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: #1d182e;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .section-sub {
      font-size: 1.02rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 聚合模型展示条 */
    .model-chips-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 30px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid rgba(121, 40, 202, 0.16);
      padding: 7px 16px;
      border-radius: 24px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary-dark);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
      transition: var(--transition);
    }

    .model-chip:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* 关于我们 / 平台介绍 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .about-feature-list {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .about-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

    .about-icon {
      width: 28px;
      height: 28px;
      background: rgba(121, 40, 202, 0.1);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
      font-size: 0.85rem;
      margin-top: 2px;
    }

    .about-feature-text h4 {
      font-size: 1.05rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .about-feature-text p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 视觉素材卡片图组 */
    .visual-media-showcase {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .media-frame {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      background: #ffffff;
      transition: var(--transition);
    }

    .media-frame:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    .media-frame img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

    .media-frame:hover img {
      transform: scale(1.02);
    }

    .media-caption {
      padding: 14px 18px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      background: #ffffff;
      border-top: 1px solid rgba(0, 0, 0, 0.05);
    }

    /* 服务能力卡片 3列网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(121, 40, 202, 0.35);
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(121, 40, 202, 0.12), rgba(224, 64, 251, 0.15));
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 20px;
    }

    .service-card h3 {
      font-size: 1.2rem;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    .service-tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
    }

    .tag-sm {
      font-size: 0.76rem;
      padding: 3px 10px;
      border-radius: 12px;
      background: rgba(121, 40, 202, 0.06);
      color: var(--primary-dark);
      font-weight: 500;
    }

    /* 对比评测表格与卡片 */
    .eval-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      position: relative;
    }

    .eval-badge-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      background: linear-gradient(135deg, #f7f1ff 0%, #ede3ff 100%);
      border: 1px solid rgba(121, 40, 202, 0.2);
      border-radius: var(--radius-md);
      padding: 20px 28px;
      margin-bottom: 32px;
    }

    .eval-score-wrap {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .eval-score-num {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--primary-dark);
      line-height: 1;
    }

    .eval-score-max {
      font-size: 1.1rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    .eval-stars {
      color: #ffb703;
      font-size: 1.3rem;
      letter-spacing: 3px;
    }

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

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

    .eval-table th, 
    .eval-table td {
      padding: 16px 20px;
      font-size: 0.94rem;
      border-bottom: 1px solid #f0eaf7;
    }

    .eval-table th {
      background: #faf7ff;
      color: var(--primary-dark);
      font-weight: 700;
      white-space: nowrap;
    }

    .eval-table tr:hover td {
      background: #fbf9fe;
    }

    .eval-tag-good {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      color: #0d8a4f;
      background: #e8f8f0;
      padding: 3px 8px;
      border-radius: 6px;
    }

    .eval-tag-bad {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 500;
      color: #8c829e;
      background: #f4f2f7;
      padding: 3px 8px;
      border-radius: 6px;
    }

    /* 流程与网络 4列 */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .flow-step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
      transition: var(--transition);
    }

    .flow-step-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .flow-step-num {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent-magenta));
      color: #ffffff;
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }

    .flow-step-card h4 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .flow-step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 用户评论卡片 3列两行 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .review-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: rgba(121, 40, 202, 0.3);
    }

    .review-stars {
      color: #ffb703;
      font-size: 1rem;
      margin-bottom: 12px;
    }

    .review-text {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f2eef9;
      padding-top: 16px;
    }

    .review-avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(121, 40, 202, 0.2), rgba(0, 210, 255, 0.2));
      color: var(--primary-dark);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
    }

    .author-info h5 {
      font-size: 0.98rem;
      color: var(--text-main);
      margin-bottom: 2px;
    }

    .author-info span {
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 500;
    }

    /* FAQ 手风琴 */
    .faq-container {
      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: var(--radius-md);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: rgba(121, 40, 202, 0.3);
    }

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

    .faq-toggle-icon {
      font-size: 1.3rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      padding: 0 24px;
      background: #fdfcff;
    }

    .faq-item.active .faq-answer {
      max-height: 600px;
      transition: max-height 0.35s ease-in-out;
      padding: 0 24px 22px;
    }

    .faq-answer p {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 需求表单与联系区域 */
    .form-section-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
    }

    .form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

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

    .form-label {
      display: block;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid #d9d0e8;
      border-radius: var(--radius-sm);
      background: #faf9fd;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(121, 40, 202, 0.12);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    .btn-submit {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
      border: none;
      border-radius: var(--radius-sm);
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 6px 18px rgba(121, 40, 202, 0.28);
      transition: var(--transition);
    }

    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(121, 40, 202, 0.4);
    }

    .contact-info-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin: 20px 0;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .contact-item strong {
      color: var(--primary-dark);
      min-width: 80px;
    }

    .qr-box {
      text-align: center;
      padding: 16px;
      background: #f8f5fc;
      border: 1px dashed rgba(121, 40, 202, 0.3);
      border-radius: var(--radius-md);
      margin-top: 10px;
    }

    .qr-box img {
      max-width: 140px;
      height: auto;
      border-radius: 8px;
      margin-bottom: 8px;
      display: inline-block;
    }

    .qr-box p {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 行业资讯与文章模块 */
    .article-section-wrap {
      background: #fbf9fe;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 60px 0;
    }

    .article-links-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 30px;
      margin-top: 20px;
      box-shadow: var(--shadow-sm);
    }

    .article-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px 24px;
      list-style: none;
    }

    .article-links-list li a {
      color: var(--primary-dark);
      font-weight: 600;
      font-size: 0.95rem;
      position: relative;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .article-links-list li a:hover {
      color: var(--accent-magenta);
      text-decoration: underline;
    }

    /* 页脚 */
    .site-footer {
      background: #171226;
      color: #cbc3df;
      padding: 50px 0 30px;
      font-size: 0.9rem;
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 36px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      margin-bottom: 18px;
      font-weight: 700;
    }

    .footer-col p {
      line-height: 1.7;
      margin-bottom: 14px;
      color: #aba1c4;
    }

    .footer-friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
    }

    .footer-friend-links a {
      color: #d1c8ea;
      font-size: 0.9rem;
      transition: var(--transition);
    }

    .footer-friend-links a:hover {
      color: #ffffff;
      text-decoration: underline;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 14px;
      color: #8c82a8;
      font-size: 0.85rem;
    }

    .footer-bottom a {
      color: #b7a9db;
    }

    /* 浮动工具组件 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid rgba(121, 40, 202, 0.25);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1.1rem;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
      cursor: pointer;
      transition: var(--transition);
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.08);
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-title { font-size: 2.2rem; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .about-grid { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: 1fr 1fr; }
      .flow-grid { grid-template-columns: repeat(2, 1fr); }
      .form-section-grid { grid-template-columns: 1fr; }
      .footer-top-grid { grid-template-columns: 1fr; gap: 24px; }
      
      .menu-toggle { 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 8px 24px rgba(0, 0, 0, 0.08);
      }
      .nav-links.show { display: flex; }
      .nav-links li { width: 100%; }
      .nav-links li a { width: 100%; padding: 12px 14px; }
    }

    @media (max-width: 640px) {
      .hero-title { font-size: 1.85rem; }
      .hero-desc { font-size: 1rem; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .flow-grid { grid-template-columns: 1fr; }
      .visual-media-showcase { grid-template-columns: 1fr; }
      .eval-badge-bar { flex-direction: column; align-items: flex-start; gap: 12px; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }