/* ----- 全局基底与变量 ----- */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --bg-base: #fdfaf6;
      --bg-soft: #fef7f0;
      --ink-strong: #1d1b1a;
      --ink-mid: #3e3a38;
      --ink-soft: #6b6461;
      --brand-orange: #ff6b35;
      --brand-pink: #ff3d7f;
      --brand-violet: #7c3aed;
      --brand-cyan: #06b6d4;
      --brand-yellow: #ffb800;
      --card-bg: #ffffff;
      --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 14px 40px rgba(255, 107, 53, 0.10);
      --border-light: rgba(0, 0, 0, 0.06);
      --radius-md: 20px;
      --radius-lg: 28px;
      --radius-sm: 14px;
      --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-base);
      background-color: var(--bg-base);
      background-image: radial-gradient(circle at 10% 0%, rgba(255, 107, 53, 0.06) 0%, transparent 40%),
                        radial-gradient(circle at 90% 20%, rgba(124, 58, 237, 0.05) 0%, transparent 35%),
                        linear-gradient(180deg, #fffaf7 0%, #fdfaf6 100%);
      color: var(--ink-strong);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* ----- 顶部导航 ----- */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(253, 250, 246, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-light);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 0;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .brand img {
      width: 44px;
      height: auto;
      border-radius: 10px;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.4px;
      background: linear-gradient(120deg, var(--brand-orange), var(--brand-pink));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 500;
      color: var(--ink-mid);
      text-decoration: none;
      border-radius: 10px;
      transition: color 0.2s, background 0.2s;
      white-space: nowrap;
    }

    .nav-links li a:hover {
      color: var(--brand-orange);
      background: rgba(255, 107, 53, 0.06);
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-left: 16px;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 700;
      text-decoration: none;
      border-radius: 40px;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s;
      cursor: pointer;
      border: none;
      font-family: inherit;
      letter-spacing: 0.2px;
    }

    .btn-primary {
      background: linear-gradient(120deg, var(--brand-orange), var(--brand-pink));
      color: #fff;
      padding: 10px 24px;
      font-size: 14px;
      box-shadow: 0 8px 20px rgba(255, 61, 127, 0.25);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(255, 61, 127, 0.35);
    }

    .btn-outline {
      background: transparent;
      color: var(--ink-strong);
      padding: 10px 22px;
      font-size: 14px;
      border: 1.5px solid rgba(0, 0, 0, 0.12);
    }

    .btn-outline:hover {
      border-color: var(--brand-orange);
      color: var(--brand-orange);
      background: rgba(255, 107, 53, 0.04);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 28px;
      cursor: pointer;
      color: var(--ink-strong);
      padding: 6px 10px;
    }

    /* ----- Hero 首屏（无图片） ----- */
    .hero {
      padding: 48px 0 56px;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: "";
      position: absolute;
      top: -20%;
      left: -10%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(255, 107, 53, 0.10) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero::after {
      content: "";
      position: absolute;
      bottom: -10%;
      right: -5%;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      align-items: center;
      gap: 40px;
      position: relative;
      z-index: 2;
    }

    .hero-content h1 {
      font-size: clamp(2.2rem, 5vw, 3.4rem);
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: -1px;
      margin-bottom: 20px;
      color: var(--ink-strong);
    }

    .hero-content h1 .gradient-text {
      background: linear-gradient(120deg, var(--brand-orange), var(--brand-pink), var(--brand-violet));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-desc {
      font-size: 1.05rem;
      color: var(--ink-mid);
      max-width: 560px;
      margin-bottom: 28px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 30px;
    }

    .btn-hero {
      padding: 14px 34px;
      font-size: 16px;
      border-radius: 60px;
    }

    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 24px 40px;
      margin-top: 8px;
    }

    .hero-stat-item {
      display: flex;
      flex-direction: column;
    }

    .hero-stat-item strong {
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--ink-strong);
      line-height: 1.2;
      background: linear-gradient(120deg, var(--brand-orange), var(--brand-pink));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-stat-item span {
      font-size: 0.85rem;
      color: var(--ink-soft);
      font-weight: 500;
    }

    .hero-visual {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 16px;
      background: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      border: 1px solid rgba(255, 255, 255, 0.9);
      box-shadow: var(--shadow-md);
      position: relative;
    }

    .hero-visual::after {
      content: "";
      position: absolute;
      inset: 0;
      border-radius: var(--radius-lg);
      padding: 2px;
      background: linear-gradient(130deg, rgba(255, 107, 53, 0.3), rgba(124, 58, 237, 0.15));
      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events: none;
    }

    .visual-pill {
      display: inline-block;
      background: rgba(255, 107, 53, 0.10);
      color: var(--brand-orange);
      padding: 5px 14px;
      border-radius: 40px;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.4px;
    }

    .visual-title {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--ink-strong);
      line-height: 1.3;
    }

    .visual-models {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 4px;
    }

    .model-tag {
      background: var(--bg-soft);
      border: 1px solid var(--border-light);
      color: var(--ink-mid);
      padding: 5px 12px;
      border-radius: 40px;
      font-size: 0.75rem;
      font-weight: 600;
      transition: background 0.2s, border-color 0.2s, transform 0.15s;
    }

    .model-tag:hover {
      background: #fff;
      border-color: var(--brand-orange);
      transform: translateY(-1px);
    }

    /* ----- 通用区块样式 ----- */
    .section {
      padding: 60px 0;
      position: relative;
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 44px;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 2px;
      color: var(--brand-orange);
      background: rgba(255, 107, 53, 0.08);
      padding: 6px 18px;
      border-radius: 40px;
      margin-bottom: 14px;
    }

    .section-head h2 {
      font-size: clamp(1.8rem, 3.5vw, 2.6rem);
      font-weight: 900;
      letter-spacing: -0.6px;
      color: var(--ink-strong);
      line-height: 1.25;
      margin-bottom: 14px;
    }

    .section-head p {
      font-size: 1.02rem;
      color: var(--ink-soft);
      max-width: 620px;
      margin: 0 auto;
    }

    /* ----- 数据指标卡片 ----- */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 10px;
    }

    .metric-card {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 26px 18px;
      text-align: center;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .metric-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .metric-number {
      font-size: 2.2rem;
      font-weight: 900;
      line-height: 1.2;
      background: linear-gradient(120deg, var(--brand-orange), var(--brand-pink));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .metric-label {
      font-size: 0.9rem;
      color: var(--ink-soft);
      font-weight: 500;
      margin-top: 6px;
    }

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

    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 107, 53, 0.25);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 16px;
      background: rgba(255, 107, 53, 0.08);
      color: var(--brand-orange);
    }

    .service-card h3 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--ink-strong);
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--ink-soft);
      flex: 1;
    }

    .service-tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 16px;
    }

    .service-tag {
      font-size: 0.7rem;
      font-weight: 600;
      color: var(--ink-soft);
      background: var(--bg-soft);
      padding: 4px 10px;
      border-radius: 30px;
      border: 1px solid var(--border-light);
    }

    /* ----- 流程步骤 ----- */
    .steps-row {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }

    .step-item {
      flex: 1 1 160px;
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 28px 18px;
      text-align: center;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
      position: relative;
    }

    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--brand-orange), var(--brand-pink));
      color: #fff;
      font-weight: 900;
      font-size: 1rem;
      margin-bottom: 14px;
    }

    .step-item h4 {
      font-size: 0.98rem;
      font-weight: 800;
      color: var(--ink-strong);
    }

    .step-item p {
      font-size: 0.82rem;
      color: var(--ink-soft);
      margin-top: 6px;
    }

    /* ----- 对比评测表格 ----- */
    .compare-table-wrap {
      overflow-x: auto;
      background: var(--card-bg);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 640px;
      font-size: 0.92rem;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid var(--border-light);
    }

    .compare-table th {
      background: var(--bg-soft);
      font-weight: 800;
      color: var(--ink-strong);
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .compare-table .highlight {
      background: rgba(255, 107, 53, 0.04);
      font-weight: 600;
    }

    .score-big {
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--brand-orange);
      line-height: 1.2;
    }

    .stars {
      color: var(--brand-yellow);
      letter-spacing: 2px;
      font-size: 1.1rem;
    }

    /* ----- 客户评论卡片 ----- */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .review-stars {
      color: var(--brand-yellow);
      font-size: 0.9rem;
      letter-spacing: 2px;
      margin-bottom: 10px;
    }

    .review-text {
      font-size: 0.9rem;
      color: var(--ink-mid);
      margin-bottom: 16px;
      line-height: 1.7;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .review-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--brand-orange), var(--brand-violet));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      font-size: 0.9rem;
      flex-shrink: 0;
    }

    .review-meta strong {
      display: block;
      font-size: 0.85rem;
      color: var(--ink-strong);
    }

    .review-meta span {
      font-size: 0.75rem;
      color: var(--ink-soft);
    }

    /* ----- 案例展示（横版+方版素材） ----- */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .case-item {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .case-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .case-item img {
      width: 100%;
      height: auto;
      display: block;
      aspect-ratio: 16/9;
      object-fit: cover;
      background: #f0ece9;
    }

    .case-item figcaption {
      padding: 16px 18px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--ink-strong);
    }

    .case-square {
      grid-column: span 1;
    }

    .case-square img {
      aspect-ratio: 1/1;
      object-fit: contain;
      background: #faf7f4;
      padding: 8px;
    }

    /* ----- 文章列表 / 行业资讯 ----- */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .article-card {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 22px 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s, box-shadow 0.2s;
      display: flex;
      flex-direction: column;
    }

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

    .article-card h4 {
      font-size: 1rem;
      font-weight: 800;
      color: var(--ink-strong);
      margin-bottom: 8px;
    }

    .article-card p {
      font-size: 0.85rem;
      color: var(--ink-soft);
      flex: 1;
      margin-bottom: 12px;
    }

    .article-link {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--brand-orange);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: gap 0.2s;
    }

    .article-link:hover {
      gap: 8px;
    }

    /* ----- 表单 ----- */
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .form-info h3 {
      font-size: 1.6rem;
      font-weight: 900;
      margin-bottom: 12px;
      color: var(--ink-strong);
    }

    .form-info p {
      color: var(--ink-soft);
      margin-bottom: 20px;
    }

    .contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 0.9rem;
    }

    .contact-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--ink-mid);
    }

    .contact-list li strong {
      color: var(--ink-strong);
      font-weight: 700;
    }

    .qr-box {
      margin-top: 20px;
    }

    .qr-box img {
      width: 110px;
      height: auto;
      border-radius: 14px;
      border: 1px solid var(--border-light);
      background: #fff;
      padding: 6px;
    }

    .qr-box span {
      display: block;
      font-size: 0.78rem;
      color: var(--ink-soft);
      margin-top: 6px;
    }

    .demand-form {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 34px 30px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
      margin-bottom: 18px;
    }

    .form-group label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--ink-strong);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      padding: 12px 16px;
      border-radius: 12px;
      border: 1.5px solid rgba(0, 0, 0, 0.10);
      background: var(--bg-soft);
      font-family: inherit;
      font-size: 0.9rem;
      color: var(--ink-strong);
      transition: border-color 0.2s, box-shadow 0.2s;
    }

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

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      outline: none;
      border-color: var(--brand-orange);
      box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.10);
      background: #fff;
    }

    .form-group.full {
      grid-column: 1 / -1;
    }

    /* ----- FAQ 折叠 ----- */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--card-bg);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
      overflow: hidden;
      transition: box-shadow 0.2s;
    }

    .faq-item:hover {
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 22px;
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--ink-strong);
      background: transparent;
      border: none;
      cursor: pointer;
      text-align: left;
      font-family: inherit;
      gap: 16px;
    }

    .faq-question span {
      font-size: 1.4rem;
      font-weight: 300;
      color: var(--brand-orange);
      transition: transform 0.25s;
      flex-shrink: 0;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s;
      padding: 0 22px;
      font-size: 0.9rem;
      color: var(--ink-soft);
      background: var(--bg-soft);
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 22px 20px;
    }

    /* ----- 标签云 / 友情链接 ----- */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 20px;
    }

    .tag-cloud span {
      background: var(--card-bg);
      border: 1px solid var(--border-light);
      padding: 8px 18px;
      border-radius: 40px;
      font-size: 0.85rem;
      color: var(--ink-mid);
      font-weight: 500;
      transition: background 0.2s, border-color 0.2s, transform 0.15s;
    }

    .tag-cloud span:hover {
      background: rgba(255, 107, 53, 0.06);
      border-color: var(--brand-orange);
      transform: translateY(-2px);
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 20px;
      justify-content: center;
      margin-top: 16px;
    }

    .friend-links a {
      font-size: 0.85rem;
      color: var(--ink-soft);
      text-decoration: none;
      transition: color 0.2s;
    }

    .friend-links a:hover {
      color: var(--brand-orange);
    }

    /* ----- 页脚 ----- */
    .site-footer {
      background: #1a1817;
      color: rgba(255, 255, 255, 0.85);
      padding: 48px 0 28px;
      margin-top: 40px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 36px;
    }

    .footer-brand p {
      font-size: 0.85rem;
      color: rgba(255, 255, 255, 0.6);
      margin-top: 12px;
      max-width: 280px;
      line-height: 1.7;
    }

    .footer-brand a {
      color: rgba(255, 255, 255, 0.9);
      text-decoration: none;
    }

    .footer-brand a:hover {
      color: var(--brand-orange);
    }

    .site-footer h4 {
      font-size: 0.9rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      font-size: 0.85rem;
      color: rgba(255, 255, 255, 0.65);
      text-decoration: none;
      transition: color 0.2s;
    }

    .footer-links a:hover {
      color: var(--brand-orange);
    }

    .footer-contact {
      font-size: 0.85rem;
      color: rgba(255, 255, 255, 0.65);
      line-height: 1.8;
    }

    .footer-contact strong {
      color: rgba(255, 255, 255, 0.9);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.8rem;
      color: rgba(255, 255, 255, 0.45);
    }

    /* ----- 浮动客服 ----- */
    .float-kefu {
      position: fixed;
      right: 20px;
      bottom: 80px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-kefu button {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--card-bg);
      border: 1px solid var(--border-light);
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.10);
      cursor: pointer;
      font-size: 1.2rem;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: transform 0.2s, box-shadow 0.2s;
      color: var(--ink-strong);
    }

    .float-kefu button:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 24px rgba(255, 107, 53, 0.18);
    }

    .kefu-panel {
      position: fixed;
      right: 80px;
      bottom: 80px;
      z-index: 101;
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
      border: 1px solid var(--border-light);
      display: none;
      width: 220px;
    }

    .kefu-panel.show {
      display: block;
      animation: fadeUp 0.25s ease;
    }

    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .kefu-panel img {
      width: 100%;
      height: auto;
      border-radius: 12px;
      margin-bottom: 10px;
    }

    .kefu-panel p {
      font-size: 0.8rem;
      color: var(--ink-soft);
      text-align: center;
    }

    /* ----- 动画 ----- */
    .fade-in-up {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .fade-in-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ----- 响应式 ----- */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .hero-visual {
        max-width: 520px;
      }

      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(253, 250, 246, 0.98);
        backdrop-filter: blur(14px);
        flex-direction: column;
        padding: 18px 24px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 20px 30px rgba(0, 0, 0, 0.06);
        align-items: flex-start;
        gap: 4px;
      }

      .nav-links.open {
        display: flex;
      }

      .mobile-toggle {
        display: block;
      }

      .nav-cta .btn-outline {
        display: none;
      }

      .form-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .services-grid {
        grid-template-columns: 1fr;
      }

      .reviews-grid {
        grid-template-columns: 1fr;
      }

      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .case-grid {
        grid-template-columns: 1fr;
      }

      .articles-grid {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .form-row {
        grid-template-columns: 1fr;
      }

      .hero-stats {
        gap: 18px 30px;
      }

      .nav-cta .btn-primary {
        padding: 8px 18px;
        font-size: 12px;
      }

      .brand-name {
        font-size: 17px;
      }

      .brand img {
        width: 36px;
      }

      .float-kefu {
        right: 14px;
        bottom: 70px;
      }

      .kefu-panel {
        right: 70px;
        bottom: 70px;
        width: 190px;
      }

      .section {
        padding: 44px 0;
      }

      .compare-table th,
      .compare-table td {
        padding: 12px 14px;
        font-size: 0.82rem;
      }
    }

    @media (max-width: 480px) {
      .metrics-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
      }

      .metric-card {
        padding: 18px 12px;
      }

      .metric-number {
        font-size: 1.6rem;
      }

      .hero-actions {
        flex-direction: column;
        align-items: flex-start;
      }

      .btn-hero {
        width: 100%;
        justify-content: center;
      }

      .hero-stats {
        flex-direction: column;
        gap: 12px;
      }

      .demand-form {
        padding: 24px 18px;
      }
    }

    /* AI百科 / 服务网络等辅助样式 */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .network-item {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s;
    }

    .network-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .network-item h4 {
      font-size: 1rem;
      font-weight: 800;
      color: var(--ink-strong);
      margin-bottom: 6px;
    }

    .network-item p {
      font-size: 0.85rem;
      color: var(--ink-soft);
    }

    .timeline-row {
      display: flex;
      gap: 0;
      flex-wrap: wrap;
      justify-content: center;
      margin-top: 20px;
    }

    .timeline-item {
      flex: 1 1 160px;
      text-align: center;
      padding: 12px 10px;
      position: relative;
    }

    .timeline-item::before {
      content: "";
      display: block;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--brand-orange);
      margin: 0 auto 12px;
    }

    .timeline-item h4 {
      font-size: 0.9rem;
      font-weight: 800;
      color: var(--ink-strong);
    }

    .timeline-item p {
      font-size: 0.8rem;
      color: var(--ink-soft);
    }

    @media (max-width: 1024px) {
      .network-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 640px) {
      .network-grid {
        grid-template-columns: 1fr;
      }
    }

    .no-wrap {
      white-space: nowrap;
    }