:root {
      --primary: #4338ca;
      --primary-accent: #ff4757;
      --accent-yellow: #ffa502;
      --accent-cyan: #00d2d3;
      --accent-purple: #5f27cd;
      --bg-base: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -4px rgba(0, 0, 0, 0.07);
      --shadow-pop: 0 12px 28px rgba(67, 56, 202, 0.12);
    }
    *, *::before, *::after {
      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, "Noto Sans", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .section-wrap {
      padding: 70px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-tag {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(67, 56, 202, 0.1);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.875rem;
      border-radius: 30px;
      margin-bottom: 12px;
      border: 1px solid rgba(67, 56, 202, 0.2);
    }
    .section-tag.contrast-pink {
      background: rgba(255, 71, 87, 0.1);
      color: var(--primary-accent);
      border-color: rgba(255, 71, 87, 0.2);
    }
    .section-tag.contrast-cyan {
      background: rgba(0, 210, 211, 0.1);
      color: #019293;
      border-color: rgba(0, 210, 211, 0.2);
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.02em;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-sub);
      max-width: 720px;
      margin: 0 auto;
    }

    /* 顶部导航 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .header-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .brand-title {
      font-size: 1.35rem;
      font-weight: 900;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-item a {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
      padding: 8px 10px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
    }
    .nav-item a:hover {
      color: var(--primary-accent);
      background: rgba(255, 71, 87, 0.06);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s ease;
      border: 2px solid transparent;
      text-align: center;
    }
    .btn-contrast {
      background: var(--primary-accent);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(255, 71, 87, 0.35);
    }
    .btn-contrast:hover {
      background: #ff2a3e;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 71, 87, 0.45);
    }
    .btn-primary {
      background: var(--primary);
      color: #ffffff;
    }
    .btn-primary:hover {
      background: #3730a3;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(67, 56, 202, 0.35);
    }
    .btn-yellow {
      background: var(--accent-yellow);
      color: #1e293b;
    }
    .btn-yellow:hover {
      background: #e59300;
      transform: translateY(-2px);
    }
    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: transparent;
    }
    .btn-outline:hover {
      background: rgba(67, 56, 202, 0.06);
    }
    .nav-toggle-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
      padding: 6px;
    }

    /* Hero 首屏 (无图纯色渐变与撞色几何卡片) */
    .hero-section {
      padding: 60px 0 70px 0;
      background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 50%, #ede9fe 100%);
      border-bottom: 2px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 2.3rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -0.03em;
    }
    .hero-h1 span.color-strike {
      color: var(--primary-accent);
      text-decoration: underline wavy var(--accent-yellow);
      text-underline-offset: 6px;
    }
    .hero-lead {
      font-size: 1.12rem;
      color: var(--text-sub);
      margin-bottom: 28px;
      line-height: 1.7;
    }
    .hero-tags-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 30px;
    }
    .hero-chip {
      font-size: 0.82rem;
      font-weight: 700;
      padding: 5px 12px;
      border-radius: 6px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--text-main);
    }
    .hero-chip.accent-1 { background: #ffeaa7; color: #d63031; border-color: #fdcb6e; }
    .hero-chip.accent-2 { background: #dff9fb; color: #130f40; border-color: #c7ecee; }
    .hero-chip.accent-3 { background: #e056fd; color: #ffffff; border-color: #be2edd; }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }
    .hero-visual-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 28px;
      border: 2px solid var(--primary);
      box-shadow: 12px 12px 0px var(--primary-accent);
      position: relative;
    }
    .visual-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 2px dashed var(--border-color);
    }
    .visual-status {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 0.9rem;
      color: #10b981;
    }
    .status-dot {
      width: 10px;
      height: 10px;
      background: #10b981;
      border-radius: 50%;
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }
    .visual-stat-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .visual-stat-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      background: var(--bg-base);
      border-left: 4px solid var(--primary);
    }
    .visual-stat-item.strike-pink { border-left-color: var(--primary-accent); }
    .visual-stat-item.strike-yellow { border-left-color: var(--accent-yellow); }
    .stat-label { font-weight: 600; color: var(--text-main); font-size: 0.9rem; }
    .stat-val { font-weight: 800; color: var(--primary); font-size: 1.05rem; }

    /* 数据指标栏 */
    .metrics-bar {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      padding: 30px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .metric-card {
      padding: 16px;
      border-radius: var(--radius-md);
      background: var(--bg-base);
      border: 1px solid var(--border-color);
      transition: transform 0.25s ease;
    }
    .metric-card:hover {
      transform: translateY(-4px);
    }
    .metric-num {
      font-size: 2rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .metric-title {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-sub);
    }

    /* 平台介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .intro-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .intro-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-pop);
      border-color: var(--primary);
    }
    .intro-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(67, 56, 202, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 18px;
      font-weight: 900;
    }
    .intro-icon-box.pink { background: rgba(255, 71, 87, 0.1); color: var(--primary-accent); }
    .intro-icon-box.yellow { background: rgba(255, 165, 2, 0.1); color: var(--accent-yellow); }
    .intro-card h3 {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .intro-card p {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 模型支持网格 */
    .models-cloud-wrap {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }
    .models-badge-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }
    .model-badge {
      display: inline-flex;
      align-items: center;
      padding: 8px 16px;
      border-radius: 8px;
      font-size: 0.88rem;
      font-weight: 700;
      background: var(--bg-base);
      border: 1px solid #cbd5e1;
      color: var(--text-main);
      transition: all 0.2s ease;
    }
    .model-badge:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: scale(1.05);
    }

    /* 一站式创作场景工坊卡片 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .scenario-card:hover {
      border-color: var(--primary-accent);
      box-shadow: 0 10px 24px rgba(255, 71, 87, 0.12);
      transform: translateY(-4px);
    }
    .scenario-badge {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
      text-transform: uppercase;
      background: #f1f5f9;
      color: var(--text-main);
    }
    .scenario-card:nth-child(3n+1) .scenario-badge { background: #ffe4e6; color: #e11d48; }
    .scenario-card:nth-child(3n+2) .scenario-badge { background: #e0e7ff; color: #4338ca; }
    .scenario-card:nth-child(3n+3) .scenario-badge { background: #fef3c7; color: #d97706; }
    .scenario-card h3 {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .scenario-card p {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 素材案例展示 */
    .media-showcase-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 24px;
      margin-bottom: 30px;
    }
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .media-img-holder {
      background: #0f172a;
      overflow: hidden;
      aspect-ratio: 16/9;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .media-img-holder.square-aspect {
      aspect-ratio: 1/1;
    }
    .media-img-holder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-img-holder img {
      transform: scale(1.04);
    }
    .media-body {
      padding: 22px;
    }
    .media-body h3 {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .media-body p {
      font-size: 0.9rem;
      color: var(--text-sub);
    }
    .banner-trio {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    /* 对比评测专区 */
    .eval-box {
      background: #ffffff;
      border: 2px solid var(--primary);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }
    .eval-highlight-score {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(90deg, #4338ca, #5f27cd);
      color: #ffffff;
      padding: 24px 32px;
      border-radius: var(--radius-md);
      margin-bottom: 30px;
    }
    .score-left h3 {
      font-size: 1.4rem;
      font-weight: 900;
      margin-bottom: 4px;
    }
    .score-left p {
      font-size: 0.95rem;
      opacity: 0.9;
    }
    .score-right {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }
    .score-big {
      font-size: 3rem;
      font-weight: 900;
      color: var(--accent-yellow);
    }
    .score-stars {
      font-size: 1.3rem;
      color: var(--accent-yellow);
    }
    .eval-table-wrap {
      overflow-x: auto;
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .eval-table th, .eval-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.94rem;
    }
    .eval-table th {
      background: var(--bg-base);
      font-weight: 800;
      color: var(--text-main);
    }
    .eval-table td.strong-win {
      font-weight: 800;
      color: var(--primary);
      background: rgba(67, 56, 202, 0.03);
    }

    /* 流程步骤 */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .process-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .process-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary-accent);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      margin-bottom: 14px;
    }
    .process-card h3 {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .process-card p {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    /* 用户评论 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-card:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--accent-yellow);
    }
    .test-content {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.6;
      margin-bottom: 18px;
      position: relative;
    }
    .test-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .test-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }
    .test-avatar.alt-1 { background: var(--primary-accent); }
    .test-avatar.alt-2 { background: var(--accent-purple); }
    .test-meta h4 {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--text-main);
    }
    .test-meta p {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 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);
      overflow: hidden;
      transition: all 0.2s ease;
    }
    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      background: none;
      border: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.25s ease;
      color: var(--primary);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary-accent);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fafafa;
    }
    .faq-answer-inner {
      padding: 0 24px 20px 24px;
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 资讯与百科 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .article-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-tag {
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .article-item h3 {
      font-size: 1.08rem;
      font-weight: 800;
      line-height: 1.4;
      margin-bottom: 12px;
    }
    .article-links-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-top: 14px;
      padding-top: 12px;
      border-top: 1px dashed var(--border-color);
    }
    .article-link-anchor {
      font-size: 0.88rem;
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .article-link-anchor:hover {
      color: var(--primary-accent);
      text-decoration: underline;
    }

    /* 表单与联系区 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-family: inherit;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(67, 56, 202, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }
    .contact-info-panel {
      background: var(--bg-base);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      border: 1px solid var(--border-color);
    }
    .qr-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: var(--radius-sm);
      display: inline-block;
      text-align: center;
      margin-bottom: 20px;
    }
    .qr-box img {
      width: 140px;
      height: 140px;
      margin: 0 auto 8px auto;
      object-fit: contain;
    }
    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      font-size: 0.92rem;
      color: var(--text-main);
    }
    .contact-item-row strong {
      color: var(--primary);
    }

    /* 加盟代理模块 */
    .agent-banner {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 44px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .agent-content h3 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 10px;
      color: #ffffff;
    }
    .agent-content p {
      font-size: 1.05rem;
      opacity: 0.9;
      max-width: 680px;
    }

    /* 页脚 */
    .main-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px 0;
      color: var(--text-sub);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 36px;
    }
    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links-list a {
      font-size: 0.9rem;
      color: var(--text-sub);
      transition: color 0.2s ease;
    }
    .footer-links-list a:hover {
      color: var(--primary-accent);
    }
    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .friend-links-box a {
      font-size: 0.85rem;
      background: var(--bg-base);
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      transition: all 0.2s ease;
    }
    .friend-links-box a:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      text-align: center;
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 悬浮工具 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 2px solid var(--primary);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      cursor: pointer;
      box-shadow: var(--shadow-md);
      transition: all 0.25s ease;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.1);
    }
    .float-btn.kefu-btn {
      background: var(--primary-accent);
      border-color: var(--primary-accent);
      color: #ffffff;
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-grid { grid-template-columns: 1fr; }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }
      .intro-grid, .scenario-grid, .testimonials-grid, .articles-grid { grid-template-columns: repeat(2, 1fr); }
      .media-showcase-grid { grid-template-columns: 1fr; }
      .process-grid { grid-template-columns: repeat(2, 1fr); }
      .contact-wrapper { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .agent-banner { flex-direction: column; text-align: center; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active { display: flex; }
      .nav-toggle-btn { display: block; }
    }

    @media (max-width: 640px) {
      .section-wrap { padding: 45px 0; }
      .hero-h1 { font-size: 1.75rem; }
      .intro-grid, .scenario-grid, .testimonials-grid, .articles-grid, .process-grid, .banner-trio { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .eval-highlight-score { flex-direction: column; align-items: flex-start; gap: 14px; }
      .hero-actions { flex-direction: column; width: 100%; }
      .hero-actions .btn { width: 100%; }
    }