:root {
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --accent-pink: #ec4899;
      --accent-cyan: #06b6d4;
      --accent-amber: #f59e0b;
      --accent-emerald: #10b981;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --gradient-vivid: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #f97316 100%);
      --gradient-soft: linear-gradient(135deg, #eef2ff 0%, #fce7f3 50%, #fff7ed 100%);
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
      --shadow-md: 0 10px 25px -5px rgba(79, 70, 229, 0.12), 0 8px 10px -6px rgba(0,0,0,0.04);
      --shadow-lg: 0 20px 30px -10px rgba(79, 70, 229, 0.2);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
    }

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

    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-page);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      background: radial-gradient(circle at 10% 20%, #f0fdf4 0%, #ffffff 40%),
                  radial-gradient(circle at 90% 80%, #fdf2f8 0%, #f8fafc 60%);
      min-height: 100vh;
    }

    .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: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      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;
      text-decoration: none;
    }
    .brand-logo-box {
      width: 42px;
      height: 42px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: var(--gradient-vivid);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }
    .brand-tag {
      font-size: 0.75rem;
      background: #eef2ff;
      color: var(--primary);
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-weight: 600;
      margin-left: 6px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      text-decoration: none;
      color: var(--text-muted);
      font-size: 0.92rem;
      font-weight: 500;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: color 0.2s, background-color 0.2s;
      white-space: nowrap;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: #f1f5f9;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-header-action {
      background: var(--gradient-vivid);
      color: #ffffff;
      padding: 8px 18px;
      font-size: 0.88rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      text-decoration: none;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
      transition: transform 0.2s, box-shadow 0.2s;
      white-space: nowrap;
    }
    .btn-header-action:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
    }
    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* 通用组件与版式 */
    section {
      padding: 72px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      background: #eef2ff;
      color: var(--primary);
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      margin-bottom: 12px;
      border: 1px solid #c7d2fe;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.02rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 HERO 区域 - 严格无图，纯CSS色块动效与数据卡片 */
    .hero-section {
      padding: 80px 0 90px;
      background: linear-gradient(180deg, rgba(238,242,255,0.7) 0%, rgba(255,255,255,0) 100%);
      position: relative;
      overflow: hidden;
    }
    .hero-wrapper {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid #cbd5e1;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      font-size: 0.84rem;
      font-weight: 600;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      margin-bottom: 20px;
    }
    .hero-tag-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-emerald);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-emerald);
    }
    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.18;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-title .highlight {
      background: var(--gradient-vivid);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.65;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 32px;
    }
    .btn-main-portal {
      background: var(--gradient-vivid);
      color: #ffffff;
      font-size: 1.08rem;
      font-weight: 700;
      padding: 14px 34px;
      border-radius: var(--radius-full);
      text-decoration: none;
      box-shadow: 0 10px 24px rgba(236, 72, 153, 0.35);
      transition: all 0.25s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-main-portal:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 14px 28px rgba(236, 72, 153, 0.45);
    }
    .btn-secondary-link {
      background: #ffffff;
      color: var(--text-main);
      font-size: 1.02rem;
      font-weight: 600;
      padding: 14px 28px;
      border-radius: var(--radius-full);
      text-decoration: none;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.2s;
    }
    .btn-secondary-link:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #f8fafc;
    }
    .hero-features-strip {
      display: flex;
      gap: 20px;
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .hero-feature-item {
      display: flex;
      align-items: center;
      gap: 6px;
      font-weight: 500;
    }

    /* Hero 右侧纯 CSS 科技数据卡片 */
    .hero-tech-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
    }
    .tech-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 16px;
      border-bottom: 1px solid #f1f5f9;
    }
    .tech-status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent-emerald);
      background: #ecfdf5;
      padding: 4px 10px;
      border-radius: var(--radius-full);
    }
    .tech-metrics-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 24px;
    }
    .tech-metric-box {
      background: #f8fafc;
      padding: 16px;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--primary);
    }
    .tech-metric-box:nth-child(2) { border-left-color: var(--accent-pink); }
    .tech-metric-box:nth-child(3) { border-left-color: var(--accent-cyan); }
    .tech-metric-box:nth-child(4) { border-left-color: var(--accent-amber); }
    .metric-value {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 2px;
    }
    .metric-title {
      font-size: 0.78rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .model-pills-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .model-pill {
      background: #f1f5f9;
      color: var(--text-muted);
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: var(--radius-full);
      border: 1px solid #e2e8f0;
    }

    /* 平台介绍 Section */
    .about-intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .about-text h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .about-text p {
      color: var(--text-muted);
      font-size: 1rem;
      margin-bottom: 20px;
    }
    .about-key-points {
      list-style: none;
      display: grid;
      gap: 12px;
    }
    .about-key-points li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.95rem;
      color: var(--text-main);
      font-weight: 500;
    }
    .about-bullet {
      background: #eef2ff;
      color: var(--primary);
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 700;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .about-media-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      background: #ffffff;
    }

    /* 核心场景与服务矩阵 (AIGC服务 + 一站式制作) */
    .grid-services-3col {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
      gap: 24px;
    }
    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #c7d2fe;
    }
    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: var(--gradient-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      color: var(--primary);
      margin-bottom: 18px;
      border: 1px solid #e0e7ff;
    }
    .service-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .service-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .service-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      padding-top: 14px;
      border-top: 1px dashed var(--border-color);
    }
    .service-micro-tag {
      font-size: 0.72rem;
      background: #f1f5f9;
      color: var(--text-muted);
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 行业方案展示 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
    }
    .solution-box {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      transition: all 0.2s;
    }
    .solution-box:hover {
      border-color: var(--accent-pink);
      box-shadow: var(--shadow-sm);
    }
    .solution-box h4 {
      font-size: 1.08rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .solution-box p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 标准制作流程 */
    .workflow-timeline {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      position: relative;
    }
    .timeline-step {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .step-number {
      font-size: 1.8rem;
      font-weight: 900;
      color: #cbd5e1;
      line-height: 1;
      margin-bottom: 12px;
    }
    .timeline-step h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .timeline-step p {
      font-size: 0.86rem;
      color: var(--text-muted);
    }

    /* 案例中心 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }
    .case-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .case-media {
      overflow: hidden;
      background: #f1f5f9;
      height: 200px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .case-body {
      padding: 20px;
    }
    .case-body h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .case-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .case-data-badge {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--accent-emerald);
      background: #ecfdf5;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }

    /* 对比评测 9.9分推荐 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-lg);
      margin-bottom: 36px;
    }
    .eval-head-flex {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid rgba(255,255,255,0.15);
    }
    .eval-score-wrap {
      display: flex;
      align-items: baseline;
      gap: 12px;
    }
    .eval-big-score {
      font-size: 3.2rem;
      font-weight: 900;
      color: #facc15;
      line-height: 1;
    }
    .eval-star-rating {
      color: #facc15;
      font-size: 1.2rem;
    }
    .eval-table-container {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }
    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
    }
    .eval-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .eval-table td.brand-col {
      background: #f0fdf4;
      font-weight: 700;
      color: var(--primary);
    }

    /* Token 比价与模型库 */
    .token-pricing-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
    }
    .token-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .token-card-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 14px;
    }
    .token-title {
      font-size: 1.1rem;
      font-weight: 700;
    }
    .token-price-tag {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--accent-pink);
    }
    .token-meta-list {
      list-style: none;
      font-size: 0.85rem;
      color: var(--text-muted);
      display: grid;
      gap: 6px;
    }

    /* 客户评价 (6条真实口碑) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .review-rating {
      color: var(--accent-amber);
      margin-bottom: 12px;
      font-size: 0.9rem;
    }
    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 12px;
      border-top: 1px solid #f1f5f9;
    }
    .author-avatar-text {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--gradient-soft);
      color: var(--primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.88rem;
      border: 1px solid #c7d2fe;
    }
    .author-info h5 {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info span {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    /* 需求匹配与表单板块 */
    .match-form-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .match-intro h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .match-intro p {
      color: var(--text-muted);
      font-size: 0.95rem;
      margin-bottom: 24px;
    }
    .match-highlights {
      list-style: none;
      display: grid;
      gap: 12px;
      font-size: 0.9rem;
      color: var(--text-main);
    }
    .ai-contact-form {
      display: grid;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      background: #f8fafc;
      color: var(--text-main);
      font-family: inherit;
      transition: border-color 0.2s, background-color 0.2s;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
    }
    .btn-submit-form {
      background: var(--gradient-vivid);
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      padding: 14px;
      border-radius: var(--radius-md);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .btn-submit-form:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(79, 70, 229, 0.35);
    }

    /* FAQ 手风琴 */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: grid;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      padding: 18px 24px;
      text-align: left;
      background: transparent;
      border: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      font-size: 1.2rem;
      font-weight: 400;
      transition: transform 0.25s;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      border-top: 1px dashed #f1f5f9;
      padding-top: 14px;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 行业资讯与短代码文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 20px;
      margin-bottom: 24px;
    }
    .article-item-card {
      background: #ffffff;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .article-item-card h4 a {
      color: var(--text-main);
      text-decoration: none;
      font-size: 1rem;
      font-weight: 700;
      transition: color 0.2s;
    }
    .article-item-card h4 a:hover {
      color: var(--primary);
    }
    .article-item-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-top: 8px;
    }
    .article-links-strip {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      background: #ffffff;
      padding: 18px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .article-link-tag {
      font-size: 0.85rem;
      color: var(--primary);
      text-decoration: none;
      background: #eef2ff;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      font-weight: 500;
    }

    /* 加盟代理与服务网络 */
    .partner-banner {
      background: linear-gradient(135deg, #fdf4ff 0%, #ede9fe 100%);
      border: 1px solid #ddd6fe;
      border-radius: var(--radius-lg);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 30px;
      align-items: center;
    }
    .partner-info h3 {
      font-size: 1.7rem;
      font-weight: 800;
      color: #4c1d95;
      margin-bottom: 12px;
    }
    .partner-info p {
      color: #6b21a8;
      font-size: 0.95rem;
    }

    /* 联系我们 */
    .contact-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 24px;
    }
    .contact-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .contact-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .contact-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      word-break: break-all;
    }
    .contact-qr-wrap {
      max-width: 140px;
      margin: 12px auto 0;
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }
    .contact-qr-wrap img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
    }
    .footer-brand-desc {
      font-size: 0.88rem;
      color: #94a3b8;
      line-height: 1.6;
    }
    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-links-list {
      list-style: none;
      display: grid;
      gap: 8px;
    }
    .footer-links-list a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.86rem;
      transition: color 0.2s;
    }
    .footer-links-list a:hover {
      color: #ffffff;
    }
    .friend-links-strip {
      padding-top: 24px;
      border-top: 1px solid #1e293b;
      margin-bottom: 24px;
    }
    .friend-links-strip h5 {
      font-size: 0.85rem;
      color: #94a3b8;
      margin-bottom: 10px;
    }
    .friend-links-items {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .friend-links-items a {
      color: #64748b;
      font-size: 0.82rem;
      text-decoration: none;
      transition: color 0.2s;
    }
    .friend-links-items a:hover {
      color: #38bdf8;
    }
    .footer-bottom-bar {
      text-align: center;
      font-size: 0.82rem;
      color: #64748b;
      padding-top: 20px;
      border-top: 1px solid #1e293b;
    }

    /* 浮动工具与返回顶部 */
    .floating-support-btn {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      background: var(--gradient-vivid);
      color: #ffffff;
      width: 52px;
      height: 52px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
      cursor: pointer;
      text-decoration: none;
      transition: transform 0.2s;
    }
    .floating-support-btn:hover {
      transform: scale(1.1);
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-wrapper {
        grid-template-columns: 1fr;
      }
      .about-intro-grid {
        grid-template-columns: 1fr;
      }
      .match-form-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .partner-banner {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }