/* ================= 基础重置与明艳宝蓝变量 ================= */
    :root {
      --primary: #0f62fe;
      --primary-hover: #0043ce;
      --primary-active: #002d9c;
      --primary-light: #edf5ff;
      --primary-glow: rgba(15, 98, 254, 0.15);
      --accent: #00b4d8;
      --accent-warm: #ff8c00;
      --bg-page: #f8faff;
      --bg-surface: #ffffff;
      --bg-subtle: #f0f4fc;
      --text-main: #161c2d;
      --text-regular: #3e485e;
      --text-muted: #69788f;
      --border-color: #e2e8f0;
      --border-light: #edf2f7;
      --shadow-sm: 0 2px 8px rgba(15, 98, 254, 0.05);
      --shadow-md: 0 8px 24px rgba(15, 98, 254, 0.08);
      --shadow-lg: 0 16px 36px rgba(15, 98, 254, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    /* 统一标准容器体系 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

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

    /* ================= 顶部导航 ================= */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(15, 98, 254, 0.1);
      box-shadow: var(--shadow-sm);
    }

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

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

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

    .brand-text {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    /* 强制要求：.nav-links gap为0 */
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 0;
    }

    .nav-links li a {
      display: inline-block;
      padding: 10px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-regular);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }

    .ai-page-home-link {
      font-weight: 600;
      color: var(--primary) !important;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(15, 98, 254, 0.3);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 6px 18px rgba(15, 98, 254, 0.4);
      transform: translateY(-1px);
    }

    .btn-secondary {
      background-color: #ffffff;
      color: var(--primary);
      border: 1px solid rgba(15, 98, 254, 0.3);
    }

    .btn-secondary:hover {
      background-color: var(--primary-light);
      border-color: var(--primary);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* ================= 视觉区域公共样式 ================= */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-subtle {
      background-color: #ffffff;
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }

    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 52px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background-color: var(--primary-light);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: 30px;
      margin-bottom: 14px;
      border: 1px solid rgba(15, 98, 254, 0.2);
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.35;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* ================= 首屏 HERO（严格规则：无任何图片） ================= */
    .hero-section {
      padding: 90px 0 80px 0;
      background: linear-gradient(180deg, #edf5ff 0%, #f8faff 100%);
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(15, 98, 254, 0.12);
    }

    /* 纯 CSS 科技几何与光晕效果（无图） */
    .hero-glow-1 {
      position: absolute;
      top: -120px;
      right: -80px;
      width: 480px;
      height: 480px;
      background: radial-gradient(circle, rgba(15, 98, 254, 0.15) 0%, rgba(0, 180, 216, 0.05) 50%, transparent 70%);
      pointer-events: none;
    }

    .hero-glow-2 {
      position: absolute;
      bottom: -100px;
      left: -80px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(0, 180, 216, 0.12) 0%, transparent 60%);
      pointer-events: none;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 30px;
      background: #ffffff;
      border: 1px solid rgba(15, 98, 254, 0.25);
      box-shadow: var(--shadow-sm);
      color: var(--primary);
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 24px;
    }

    .hero-badge .pulse {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #00c853;
      box-shadow: 0 0 0 0 rgba(0, 200, 83, 0.7);
      animation: pulseAnimation 2s infinite;
    }

    @keyframes pulseAnimation {
      0% { box-shadow: 0 0 0 0 rgba(0, 200, 83, 0.7); }
      70% { box-shadow: 0 0 0 8px rgba(0, 200, 83, 0); }
      100% { box-shadow: 0 0 0 0 rgba(0, 200, 83, 0); }
    }

    /* H1 精准控制在20字内 */
    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title span {
      color: var(--primary);
      background: linear-gradient(90deg, #0f62fe 0%, #00b4d8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-regular);
      line-height: 1.8;
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .btn-hero-large {
      padding: 14px 34px;
      font-size: 1.08rem;
      border-radius: 8px;
    }

    .btn-hero-cta {
      background: linear-gradient(135deg, #0f62fe 0%, #0043ce 100%);
      color: #ffffff;
      box-shadow: 0 10px 25px rgba(15, 98, 254, 0.35);
    }

    .btn-hero-cta:hover {
      box-shadow: 0 14px 30px rgba(15, 98, 254, 0.45);
      transform: translateY(-2px);
    }

    /* 纯代码数据指标卡片群（首屏无图） */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .hero-stat-card {
      background: #ffffff;
      border: 1px solid rgba(15, 98, 254, 0.12);
      border-radius: var(--radius-md);
      padding: 22px 16px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
    }

    .hero-stat-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: rgba(15, 98, 254, 0.3);
    }

    .hero-stat-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
      font-family: inherit;
    }

    .hero-stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* ================= 平台介绍与核心架构 ================= */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .about-info-text {
      font-size: 1.02rem;
      color: var(--text-regular);
      margin-bottom: 24px;
      line-height: 1.75;
    }

    .about-feature-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 30px;
    }

    .about-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      background: var(--bg-subtle);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--primary);
    }

    .about-feature-item h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 3px;
    }

    .about-feature-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.4;
    }

    .image-frame {
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      position: relative;
    }

    .ai-page-image {
      width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-md);
      object-fit: cover;
    }

    /* ================= AIGC 核心业务与场景矩阵 ================= */
    .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 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

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

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background-color: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 18px;
    }

    .service-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-regular);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 16px;
    }

    .service-meta-tag {
      display: inline-block;
      font-size: 0.8rem;
      padding: 3px 10px;
      background: var(--bg-subtle);
      color: var(--primary);
      border-radius: 4px;
      font-weight: 500;
      align-self: flex-start;
    }

    /* ================= 模型生态与聚合标签 ================= */
    .models-cloud-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      box-shadow: var(--shadow-sm);
      text-align: center;
    }

    .models-title {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .models-subtitle {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 28px;
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-badge {
      display: inline-flex;
      align-items: center;
      padding: 8px 16px;
      background: var(--bg-subtle);
      border: 1px solid var(--border-light);
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-regular);
      transition: var(--transition);
    }

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

    /* ================= 标准化一站式流水线 ================= */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-step {
      background: #ffffff;
      padding: 28px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .process-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      font-size: 1rem;
    }

    .process-step h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .process-step p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* ================= 严格要求的对比评测板块 ================= */
    .review-score-hero {
      background: linear-gradient(135deg, #0f62fe 0%, #0043ce 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      margin-bottom: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-lg);
      flex-wrap: wrap;
      gap: 20px;
    }

    .score-left {
      max-width: 600px;
    }

    .score-left h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .score-left p {
      font-size: 1rem;
      opacity: 0.92;
      line-height: 1.6;
    }

    .score-badge-card {
      background: rgba(255, 255, 255, 0.15);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.3);
      padding: 20px 32px;
      border-radius: var(--radius-md);
      text-align: center;
    }

    .score-number {
      font-size: 3.2rem;
      font-weight: 900;
      line-height: 1;
      margin-bottom: 4px;
      color: #ffffff;
    }

    .score-stars {
      color: #ffd166;
      font-size: 1.25rem;
      letter-spacing: 2px;
      margin-bottom: 4px;
    }

    .score-scale {
      font-size: 0.88rem;
      opacity: 0.85;
    }

    .comparison-table-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 720px;
    }

    .comparison-table th,
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-light);
      font-size: 0.93rem;
    }

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

    .comparison-table tr:hover td {
      background-color: rgba(15, 98, 254, 0.02);
    }

    .highlight-cell {
      color: var(--primary);
      font-weight: 700;
      background-color: var(--primary-light) !important;
    }

    /* ================= 案例中心展示 ================= */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

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

    .case-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }

    .case-media {
      width: 100%;
      height: 240px;
      overflow: hidden;
      background: #eee;
    }

    .case-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-media img {
      transform: scale(1.04);
    }

    .case-body {
      padding: 24px;
    }

    .case-body h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .case-body p {
      font-size: 0.9rem;
      color: var(--text-regular);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .case-tags {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }

    .case-tags span {
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.8rem;
      padding: 3px 10px;
      border-radius: 4px;
      font-weight: 500;
    }

    /* ================= 客户评论（6条真实评论） ================= */
    .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: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .review-card:hover {
      border-color: rgba(15, 98, 254, 0.4);
      box-shadow: var(--shadow-md);
    }

    .review-stars {
      color: #ffb703;
      margin-bottom: 12px;
      font-size: 0.95rem;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-regular);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary) 0%, #00b4d8 100%);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }

    .author-info h4 {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* ================= 行业资讯与短代码 ================= */
    .articles-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 30px;
    }

    .article-main-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

    .article-links-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .article-links-list li {
      padding: 14px 0;
      border-bottom: 1px dashed var(--border-light);
    }

    .article-links-list li:last-child {
      border-bottom: none;
    }

    .article-links-list a {
      font-size: 0.96rem;
      color: var(--text-main);
      font-weight: 500;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .article-links-list a:hover {
      color: var(--primary);
      padding-left: 6px;
    }

    .article-sidebar-box {
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
    }

    /* ================= 常见问题 FAQ 折叠面板 ================= */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: rgba(15, 98, 254, 0.4);
    }

    .faq-question {
      padding: 18px 24px;
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
      background-color: #fafcff;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 16px 24px 22px 24px;
      border-top: 1px solid var(--border-light);
    }

    .faq-answer p {
      font-size: 0.92rem;
      color: var(--text-regular);
      line-height: 1.7;
    }

    /* ================= 加盟代理与商业生态 ================= */
    .franchise-card {
      background: linear-gradient(135deg, #ffffff 0%, #f0f6ff 100%);
      border: 2px solid rgba(15, 98, 254, 0.2);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .franchise-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 28px;
    }

    .franchise-point {
      background: #ffffff;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
    }

    .franchise-point h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .franchise-point p {
      font-size: 0.88rem;
      color: var(--text-regular);
      line-height: 1.55;
    }

    /* ================= 联系我们与需求表单 ================= */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background-color: #ffffff;
      color: var(--text-main);
      transition: var(--transition);
      outline: none;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px var(--primary-glow);
    }

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

    .contact-info-panel {
      background: var(--bg-subtle);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-meta-item {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .contact-meta-item strong {
      min-width: 90px;
      color: var(--text-regular);
    }

    .qr-box {
      text-align: center;
      margin-top: 20px;
      padding: 16px;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
    }

    .qr-box img {
      width: 130px;
      height: 130px;
      display: block;
      margin: 0 auto 10px auto;
      object-fit: contain;
    }

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

    /* ================= 页脚与友情链接 ================= */
    .site-footer {
      background-color: #0d1526;
      color: #94a3b8;
      padding: 50px 0 24px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 36px;
    }

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.3rem;
      margin-bottom: 12px;
      font-weight: 700;
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.7;
      max-width: 440px;
      color: #94a3b8;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 14px;
    }

    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }

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

    .footer-links a {
      color: #94a3b8;
      font-size: 0.88rem;
    }

    .footer-links a:hover {
      color: #ffffff;
    }

    .friend-links-wrap {
      border-top: 1px solid #1e293b;
      padding: 20px 0;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
    }

    .friend-links-wrap span {
      color: #e2e8f0;
      font-size: 0.88rem;
      font-weight: 600;
    }

    .friend-links-wrap a {
      color: #94a3b8;
      font-size: 0.85rem;
    }

    .friend-links-wrap a:hover {
      color: #ffffff;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* ================= 浮动侧边客服 ================= */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(15, 98, 254, 0.4);
      cursor: pointer;
      border: none;
      transition: var(--transition);
      font-size: 1.2rem;
    }

    .float-btn:hover {
      transform: scale(1.1);
      background: var(--primary-hover);
    }

    /* ================= 响应式适配 ================= */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.3rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid,
      .cases-grid,
      .reviews-grid,
      .franchise-grid,
      .contact-wrapper,
      .footer-top-grid,
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .mobile-menu-active .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        box-shadow: var(--shadow-md);
        padding: 16px 20px;
        gap: 0;
      }
      .mobile-menu-active .nav-links li {
        width: 100%;
      }
      .mobile-menu-active .nav-links li a {
        display: block;
        padding: 12px 0;
        border-bottom: 1px solid var(--border-light);
      }
    }

    @media (max-width: 640px) {
      .hero-title {
        font-size: 1.85rem;
      }
      .hero-stats-grid,
      .services-grid,
      .process-timeline,
      .about-feature-list {
        grid-template-columns: 1fr;
      }
      .score-number {
        font-size: 2.4rem;
      }
      .section-wrap {
        padding: 50px 0;
      }
    }