/* ===== 基础重置与全局 ===== */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --primary: #ff5e1a;
      --primary-light: #ff8a4c;
      --primary-dark: #d94800;
      --primary-glow: rgba(255, 94, 26, 0.18);
      --bg-base: #fffaf6;
      --bg-soft: #fff3ec;
      --bg-card: #ffffff;
      --text-dark: #1f1a17;
      --text-body: #3d332d;
      --text-muted: #7a6b62;
      --border-light: #f0e4dd;
      --shadow-sm: 0 2px 8px rgba(31, 26, 23, 0.04);
      --shadow-md: 0 8px 24px rgba(255, 94, 26, 0.08);
      --shadow-lg: 0 16px 40px rgba(255, 94, 26, 0.12);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-base);
      background-image: radial-gradient(circle at 0% 0%, #fff0e6 0%, transparent 40%),
                        radial-gradient(circle at 100% 20%, #ffe9dd 0%, transparent 35%);
      color: var(--text-body);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    a {
      text-decoration: none;
      color: var(--primary);
      transition: color 0.2s, opacity 0.2s;
    }
    a:hover {
      color: var(--primary-dark);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    ul, ol {
      list-style: none;
    }
    h1, h2, h3, h4 {
      color: var(--text-dark);
      font-weight: 700;
      line-height: 1.3;
    }
    h2 {
      font-size: 2rem;
      margin-bottom: 12px;
    }
    h3 {
      font-size: 1.25rem;
      margin-bottom: 8px;
    }
    .section {
      padding: 72px 0;
    }
    .section-header {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 48px;
    }
    .section-header p {
      color: var(--text-muted);
      font-size: 1.05rem;
    }
    .badge {
      display: inline-block;
      background: var(--primary-glow);
      color: var(--primary-dark);
      font-size: 0.8rem;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: 50px;
      letter-spacing: 0.5px;
      margin-bottom: 12px;
      border: 1px solid rgba(255, 94, 26, 0.2);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.95rem;
      transition: all 0.25s ease;
      cursor: pointer;
      border: none;
      background: var(--primary);
      color: #fff;
      box-shadow: 0 6px 18px rgba(255, 94, 26, 0.3);
    }
    .btn:hover {
      background: var(--primary-dark);
      color: #fff;
      box-shadow: 0 10px 24px rgba(255, 94, 26, 0.4);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
      box-shadow: none;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 6px 18px rgba(255, 94, 26, 0.3);
    }
    .btn-sm {
      padding: 8px 20px;
      font-size: 0.85rem;
    }

    /* ===== 滚动渐入 ===== */
    .reveal {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===== 顶部导航 ===== */
    .header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 250, 246, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 68px;
      gap: 24px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-shrink: 0;
    }
    .brand img {
      height: 38px;
      width: auto;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      flex-wrap: wrap;
    }
    .nav-links a {
      color: var(--text-body);
      font-size: 0.9rem;
      font-weight: 500;
      padding: 8px 12px;
      border-radius: 8px;
      white-space: nowrap;
      transition: background 0.2s, color 0.2s;
    }
    .nav-links a:hover {
      background: var(--bg-soft);
      color: var(--primary-dark);
    }
    .nav-cta {
      flex-shrink: 0;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
      color: var(--text-dark);
    }
    .mobile-toggle svg {
      display: block;
    }

    /* ===== Hero 首屏（无图片） ===== */
    .hero {
      padding: 80px 0 64px;
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: -20%;
      right: -10%;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(255, 94, 26, 0.10) 0%, transparent 65%);
      border-radius: 50%;
      pointer-events: none;
      z-index: 0;
    }
    .hero::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: -5%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(255, 180, 140, 0.12) 0%, transparent 65%);
      border-radius: 50%;
      pointer-events: none;
      z-index: 0;
    }
    .hero .container {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.8rem;
      line-height: 1.15;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .hero-content h1 .highlight {
      color: var(--primary);
      position: relative;
    }
    .hero-content h1 .highlight::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 4px;
      width: 100%;
      height: 8px;
      background: rgba(255, 94, 26, 0.18);
      border-radius: 4px;
      z-index: -1;
    }
    .hero-desc {
      font-size: 1.1rem;
      color: var(--text-muted);
      margin-bottom: 28px;
      max-width: 520px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 32px;
    }
    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 28px;
      padding-top: 8px;
    }
    .hero-stat-item .num {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.2;
    }
    .hero-stat-item .num span {
      color: var(--primary);
    }
    .hero-stat-item .label {
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-top: 2px;
    }
    .hero-visual {
      position: relative;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .hero-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 22px 24px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-light);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .hero-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .hero-card .card-top {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }
    .hero-card .icon-dot {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--bg-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      flex-shrink: 0;
    }
    .hero-card .icon-dot svg {
      width: 22px;
      height: 22px;
    }
    .hero-card .card-title {
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-dark);
    }
    .hero-card .card-sub {
      font-size: 0.82rem;
      color: var(--text-muted);
    }
    .hero-card .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 10px;
    }
    .tag {
      display: inline-block;
      background: var(--bg-soft);
      color: var(--text-body);
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 50px;
      border: 1px solid var(--border-light);
      transition: background 0.2s, color 0.2s;
    }
    .tag:hover {
      background: var(--primary);
      color: #fff;
    }

    /* ===== 数据指标 ===== */
    .metrics {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item .metric-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }
    .metric-item .metric-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* ===== 平台介绍 ===== */
    .about-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .about-content h2 {
      font-size: 1.9rem;
      margin-bottom: 16px;
    }
    .about-content p {
      color: var(--text-body);
      margin-bottom: 14px;
      font-size: 1rem;
    }
    .about-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }
    .about-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.92rem;
      color: var(--text-body);
    }
    .about-feature-item .dot-icon {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--primary-glow);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.7rem;
      font-weight: 700;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .about-visual {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 28px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .model-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }
    .model-cloud span {
      background: var(--bg-base);
      border: 1px solid var(--border-light);
      border-radius: 50px;
      padding: 6px 16px;
      font-size: 0.82rem;
      color: var(--text-body);
      transition: all 0.25s;
    }
    .model-cloud span:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* ===== 服务能力卡片 ===== */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .service-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 26px 22px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .service-card .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: var(--bg-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .service-card .service-icon svg {
      width: 24px;
      height: 24px;
    }
    .service-card h3 {
      font-size: 1.05rem;
      margin-bottom: 6px;
    }
    .service-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* ===== 标准流程 / 时间线 ===== */
    .timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .timeline::before {
      content: '';
      position: absolute;
      top: 28px;
      left: 10%;
      right: 10%;
      height: 2px;
      background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
      opacity: 0.3;
    }
    .timeline-step {
      text-align: center;
      position: relative;
      z-index: 1;
    }
    .timeline-step .step-num {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 2px solid var(--primary);
      color: var(--primary);
      font-weight: 800;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px;
      box-shadow: 0 4px 12px rgba(255, 94, 26, 0.15);
      transition: background 0.25s, color 0.25s;
    }
    .timeline-step:hover .step-num {
      background: var(--primary);
      color: #fff;
    }
    .timeline-step h4 {
      font-size: 0.95rem;
      margin-bottom: 4px;
    }
    .timeline-step p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* ===== 对比评测 ===== */
    .compare-wrapper {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .compare-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 28px;
    }
    .rating-block {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .rating-score {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
    }
    .rating-stars {
      color: #f5a623;
      font-size: 1.1rem;
      letter-spacing: 2px;
    }
    .rating-detail {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .compare-table-wrap {
      overflow-x: auto;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
    }
    table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.92rem;
      min-width: 640px;
    }
    th, td {
      padding: 14px 18px;
      text-align: left;
      border-bottom: 1px solid var(--border-light);
    }
    th {
      background: var(--bg-soft);
      color: var(--text-dark);
      font-weight: 700;
      white-space: nowrap;
    }
    tr:last-child td {
      border-bottom: none;
    }
    tr:hover td {
      background: #fffbf8;
    }
    .check-yes {
      color: #2e9e4f;
      font-weight: 700;
    }
    .check-no {
      color: #b0a49c;
    }

    /* ===== 案例中心 ===== */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .case-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .case-card .case-img {
      width: 100%;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: var(--bg-soft);
    }
    .case-card .case-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-img img {
      transform: scale(1.04);
    }
    .case-card .case-body {
      padding: 18px 20px;
    }
    .case-card h3 {
      font-size: 1rem;
      margin-bottom: 6px;
    }
    .case-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* ===== 用户评论 ===== */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .review-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .review-stars {
      color: #f5a623;
      font-size: 0.9rem;
      letter-spacing: 2px;
      margin-bottom: 10px;
    }
    .review-text {
      font-size: 0.9rem;
      color: var(--text-body);
      margin-bottom: 16px;
      line-height: 1.7;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .review-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--bg-soft);
      color: var(--primary);
      font-weight: 700;
      font-size: 0.85rem;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .review-user-info .name {
      font-weight: 600;
      font-size: 0.88rem;
      color: var(--text-dark);
    }
    .review-user-info .role {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* ===== 文章列表 ===== */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .article-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
      display: flex;
      flex-direction: column;
    }
    .article-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .article-card .article-meta {
      font-size: 0.78rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .article-card h3 {
      font-size: 1rem;
      margin-bottom: 8px;
      flex: 1;
    }
    .article-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 14px;
    }
    .article-card .read-more {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
    }

    /* ===== 表单 ===== */
    .form-section {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 40px 36px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full {
      grid-column: 1 / -1;
    }
    .form-group label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-dark);
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1.5px solid var(--border-light);
      font-family: var(--font-sans);
      font-size: 0.92rem;
      color: var(--text-dark);
      background: var(--bg-base);
      transition: border-color 0.25s, box-shadow 0.25s;
      outline: none;
      appearance: none;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px var(--primary-glow);
    }
    .form-group textarea {
      min-height: 110px;
      resize: vertical;
    }
    .form-submit {
      margin-top: 8px;
      text-align: center;
    }
    .form-submit .btn {
      min-width: 200px;
    }

    /* ===== FAQ ===== */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--bg-card);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
      overflow: hidden;
      transition: box-shadow 0.25s;
    }
    .faq-item:hover {
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 18px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      font-family: var(--font-sans);
      transition: color 0.2s;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--bg-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      transition: transform 0.3s, background 0.3s;
      color: var(--primary);
      font-size: 1.1rem;
      font-weight: 400;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 22px;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 22px 18px;
    }
    .faq-answer p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* ===== 浮动客服 & 返回顶部 ===== */
    .float-actions {
      position: fixed;
      right: 22px;
      bottom: 80px;
      z-index: 90;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      cursor: pointer;
      transition: all 0.25s;
      position: relative;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-3px);
      box-shadow: var(--shadow-lg);
    }
    .float-btn svg {
      width: 22px;
      height: 22px;
    }
    .float-tooltip {
      position: absolute;
      right: 58px;
      top: 50%;
      transform: translateY(-50%);
      background: var(--text-dark);
      color: #fff;
      font-size: 0.78rem;
      padding: 6px 12px;
      border-radius: 6px;
      white-space: nowrap;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.2s;
    }
    .float-btn:hover .float-tooltip {
      opacity: 1;
    }
    .back-top {
      position: fixed;
      right: 22px;
      bottom: 22px;
      z-index: 90;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: 0 6px 18px rgba(255, 94, 26, 0.35);
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
      border: none;
    }
    .back-top.show {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    .back-top svg {
      width: 22px;
      height: 22px;
    }

    /* ===== 页脚 ===== */
    .footer {
      background: #1f1a17;
      color: #d6ccc5;
      padding: 56px 0 0;
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-brand .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
    }
    .footer-brand .footer-logo img {
      height: 36px;
      width: auto;
    }
    .footer-brand p {
      font-size: 0.85rem;
      line-height: 1.8;
      color: #b3a8a0;
      margin-bottom: 8px;
    }
    .footer h4 {
      color: #fff;
      font-size: 0.95rem;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      color: #b3a8a0;
      font-size: 0.85rem;
      transition: color 0.2s;
    }
    .footer-links a:hover {
      color: var(--primary-light);
    }
    .footer-contact-item {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      font-size: 0.85rem;
      color: #b3a8a0;
      margin-bottom: 10px;
    }
    .footer-contact-item svg {
      width: 16px;
      height: 16px;
      flex-shrink: 0;
      margin-top: 3px;
      color: var(--primary-light);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom p {
      font-size: 0.8rem;
      color: #8a7e76;
    }
    .footer-bottom-links {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .footer-bottom-links a {
      font-size: 0.8rem;
      color: #8a7e76;
    }
    .footer-bottom-links a:hover {
      color: var(--primary-light);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .hero .container {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .hero-content h1 {
        font-size: 2.2rem;
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cases-grid,
      .reviews-grid,
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
      }
      .timeline::before {
        display: none;
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .metrics {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--bg-base);
        border-bottom: 1px solid var(--border-light);
        flex-direction: column;
        align-items: stretch;
        padding: 12px 24px 20px;
        gap: 4px;
        box-shadow: 0 12px 24px rgba(31, 26, 23, 0.06);
        max-height: 70vh;
        overflow-y: auto;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links a {
        padding: 10px 12px;
        font-size: 0.92rem;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-cta .btn {
        display: none;
      }
      .hero {
        padding: 48px 0 40px;
      }
      .hero-content h1 {
        font-size: 1.75rem;
      }
      .hero-desc {
        font-size: 1rem;
      }
      .section {
        padding: 48px 0;
      }
      h2 {
        font-size: 1.6rem;
      }
      .services-grid,
      .cases-grid,
      .reviews-grid,
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .timeline {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-section {
        padding: 28px 20px;
      }
      .compare-wrapper {
        padding: 24px 16px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .metrics {
        grid-template-columns: 1fr 1fr;
        padding: 24px 16px;
        gap: 16px;
      }
      .hero-stats {
        gap: 20px;
      }
      .float-actions {
        right: 14px;
        bottom: 72px;
      }
      .back-top {
        right: 14px;
        bottom: 14px;
      }
      .hero-visual {
        display: grid;
        grid-template-columns: 1fr;
        gap: 12px;
      }
      .about-features {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 480px) {
      .container {
        padding: 0 16px;
      }
      .hero-content h1 {
        font-size: 1.5rem;
      }
      .hero-actions {
        flex-direction: column;
      }
      .hero-actions .btn {
        width: 100%;
      }
      .metrics {
        grid-template-columns: 1fr;
      }
      .compare-header {
        flex-direction: column;
        align-items: flex-start;
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
    }