/* ---------- 全局重置与变量 ---------- */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --bg: #fdfaf7;
      --bg-alt: #fff9f2;
      --surface: #ffffff;
      --surface-soft: #fffaf4;
      --text: #1e1e2a;
      --text-muted: #5e5e6e;
      --primary: #ff4d4d;
      --primary-dark: #d9363e;
      --primary-light: #fff0f0;
      --accent: #ffb347;
      --accent-light: #fff4e0;
      --border: #f0e4d8;
      --shadow-sm: 0 8px 20px rgba(0, 0, 0, 0.02), 0 2px 6px rgba(0, 0, 0, 0.02);
      --shadow-md: 0 20px 35px -8px rgba(255, 77, 77, 0.08), 0 8px 20px -6px rgba(0, 0, 0, 0.02);
      --shadow-hover: 0 24px 45px -12px rgba(255, 77, 77, 0.15), 0 10px 25px -8px rgba(0, 0, 0, 0.05);
      --radius-card: 24px;
      --radius-btn: 50px;
      --radius-sm: 12px;
      --container-width: 1200px;
      --transition: 0.25s ease;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg);
      background-image: radial-gradient(circle at 10% 20%, rgba(255, 200, 150, 0.08) 0%, transparent 35%),
                        radial-gradient(circle at 90% 10%, rgba(255, 100, 100, 0.06) 0%, transparent 40%);
      color: var(--text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    ul {
      list-style: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }
    /* ---------- 通用按钮 ---------- */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 1rem;
      line-height: 1.2;
      transition: all var(--transition);
      cursor: pointer;
      border: none;
      text-align: center;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 10px 18px -6px rgba(255, 77, 77, 0.4);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: 0 18px 25px -8px rgba(255, 77, 77, 0.5);
    }
    .btn-outline {
      background: transparent;
      color: var(--text);
      border: 1.5px solid var(--border);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      background: var(--primary-light);
      color: var(--primary-dark);
      transform: translateY(-2px);
    }
    .btn-lg {
      padding: 18px 42px;
      font-size: 1.125rem;
    }
    .tag {
      display: inline-block;
      padding: 6px 14px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 0.02em;
    }
    /* ---------- 导航 ---------- */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(253, 250, 247, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 0;
    }
    .logo-wrap {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-shrink: 0;
    }
    .logo-wrap img {
      max-height: 44px;
      width: auto;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      margin: 0 16px;
    }
    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 0.94rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: 50px;
      transition: all var(--transition);
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: 1.5px solid var(--border);
      border-radius: 50px;
      width: 44px;
      height: 44px;
      font-size: 1.4rem;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text);
    }
    /* ---------- HERO 首屏（无图片） ---------- */
    .hero {
      padding: 60px 0 70px;
      position: relative;
      overflow: hidden;
    }
    .hero .container {
      display: flex;
      align-items: center;
      gap: 48px;
    }
    .hero-content {
      flex: 1.2;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent-light);
      padding: 6px 18px;
      border-radius: 100px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #b35a00;
      margin-bottom: 24px;
      border: 1px solid #ffe0b0;
    }
    .hero h1 {
      font-size: clamp(2rem, 4vw, 3.2rem);
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
      color: #1a1a2e;
    }
    .hero h1 span {
      color: var(--primary);
    }
    .hero p {
      font-size: 1.1rem;
      color: var(--text-muted);
      max-width: 540px;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-stats {
      display: flex;
      gap: 32px;
      flex-wrap: wrap;
    }
    .hero-stats .stat-item {
      display: flex;
      flex-direction: column;
    }
    .hero-stats .stat-number {
      font-size: 1.8rem;
      font-weight: 800;
      color: #1a1a2e;
      letter-spacing: -0.02em;
    }
    .hero-stats .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .hero-visual {
      flex: 0.8;
      display: flex;
      justify-content: center;
    }
    .hero-graphic {
      width: 100%;
      max-width: 380px;
      aspect-ratio: 1 / 1;
      background: linear-gradient(145deg, #ffe8e0, #fff4e8);
      border-radius: 50% 30% 50% 30% / 30% 50% 30% 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      animation: floatGraphic 8s infinite ease-in-out;
      box-shadow: 0 30px 50px -20px rgba(255, 120, 80, 0.2);
    }
    .hero-graphic::before {
      content: '';
      position: absolute;
      inset: 18px;
      border-radius: inherit;
      border: 2px dashed rgba(255, 77, 77, 0.3);
      pointer-events: none;
    }
    .hero-graphic-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      padding: 32px;
      width: 100%;
    }
    .graphic-chip {
      background: #ffffff;
      border-radius: 16px;
      padding: 18px 12px;
      text-align: center;
      box-shadow: 0 10px 18px -6px rgba(0, 0, 0, 0.05);
      font-weight: 600;
      font-size: 0.9rem;
      color: #1a1a2e;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
      transition: transform var(--transition);
    }
    .graphic-chip:hover {
      transform: translateY(-4px);
    }
    .graphic-chip span {
      font-size: 1.6rem;
    }
    @keyframes floatGraphic {
      0%, 100% { transform: translateY(0) rotate(0deg); }
      50% { transform: translateY(-12px) rotate(2deg); }
    }
    /* ---------- 通用区块 ---------- */
    section {
      padding: 70px 0;
    }
    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }
    .section-header h2 {
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 14px;
      color: #1a1a2e;
    }
    .section-header p {
      color: var(--text-muted);
      max-width: 620px;
      margin: 0 auto;
      font-size: 1.05rem;
    }
    /* ---------- 关于我们 ---------- */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .about-text h3 {
      font-size: 1.8rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: #1a1a2e;
    }
    .about-text p {
      color: var(--text-muted);
      margin-bottom: 18px;
      font-size: 1.02rem;
    }
    .about-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }
    .about-tags .tag {
      background: #fff4e0;
      color: #a35e00;
    }
    .about-cards {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }
    .about-card {
      background: var(--surface);
      border-radius: var(--radius-card);
      padding: 24px 20px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
    }
    .about-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-6px);
      border-color: #ffcfcf;
    }
    .about-card .icon {
      font-size: 1.8rem;
      margin-bottom: 12px;
    }
    .about-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: #1a1a2e;
    }
    .about-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    /* ---------- 服务能力卡片 ---------- */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 24px;
    }
    .service-card {
      background: var(--surface);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-6px);
      border-color: #ffcfcf;
    }
    .service-icon {
      width: 52px;
      height: 52px;
      background: linear-gradient(135deg, #ffe8e0, #fff4e8);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 18px;
    }
    .service-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #1a1a2e;
    }
    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      flex: 1;
    }
    /* ---------- 流程步骤 ---------- */
    .steps-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      justify-content: center;
    }
    .step-item {
      flex: 1 1 180px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 30px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      position: relative;
    }
    .step-item:hover {
      border-color: #ffcfcf;
      box-shadow: var(--shadow-hover);
      transform: translateY(-6px);
    }
    .step-number {
      width: 44px;
      height: 44px;
      background: var(--primary);
      color: #fff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      font-size: 1.1rem;
    }
    .step-item h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #1a1a2e;
    }
    .step-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    /* ---------- 对比表格 ---------- */
    .table-responsive {
      overflow-x: auto;
      margin-top: 30px;
      border-radius: var(--radius-card);
      border: 1px solid var(--border);
      background: var(--surface);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      min-width: 680px;
      border-collapse: collapse;
    }
    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid var(--border);
      font-size: 0.95rem;
    }
    .compare-table th {
      background: #fff4e8;
      color: #1a1a2e;
      font-weight: 700;
      font-size: 1rem;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table td:first-child {
      font-weight: 600;
      color: #1a1a2e;
    }
    .rating-stars {
      color: #ffb347;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }
    .score-highlight {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--primary);
    }
    /* ---------- 案例展示 ---------- */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 24px;
    }
    .case-card {
      background: var(--surface);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
    }
    .case-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-6px);
      border-color: #ffcfcf;
    }
    .case-card img {
      width: 100%;
      aspect-ratio: 16/10;
      object-fit: cover;
    }
    .case-info {
      padding: 20px;
    }
    .case-info h4 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: #1a1a2e;
    }
    .case-info p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    /* ---------- 用户评论 ---------- */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }
    .review-card {
      background: var(--surface);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      display: flex;
      flex-direction: column;
    }
    .review-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: #ffcfcf;
    }
    .review-stars {
      color: #ffb347;
      font-size: 1rem;
      letter-spacing: 2px;
      margin-bottom: 14px;
    }
    .review-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      flex: 1;
      margin-bottom: 20px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .review-avatar {
      width: 40px;
      height: 40px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
    }
    .review-meta {
      display: flex;
      flex-direction: column;
    }
    .review-meta strong {
      font-size: 0.95rem;
      font-weight: 700;
      color: #1a1a2e;
    }
    .review-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    /* ---------- FAQ ---------- */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: all var(--transition);
    }
    .faq-item:hover {
      border-color: #ffcfcf;
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 22px;
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      color: #1a1a2e;
      transition: background var(--transition);
    }
    .faq-question:hover {
      background: var(--surface-soft);
    }
    .faq-question .arrow {
      transition: transform 0.3s ease;
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .faq-item.active .faq-question .arrow {
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s ease;
      padding: 0 22px;
      font-size: 0.95rem;
      color: var(--text-muted);
      background: var(--surface);
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 22px 20px;
    }
    /* ---------- 表单 ---------- */
    .form-card {
      max-width: 660px;
      margin: 0 auto;
      background: var(--surface);
      border-radius: var(--radius-card);
      padding: 40px 36px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: #1a1a2e;
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 14px 18px;
      border: 1.5px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: var(--bg);
      color: var(--text);
      transition: all var(--transition);
      font-family: inherit;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(255, 77, 77, 0.08);
    }
    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    /* ---------- 底部信息区 ---------- */
    .footer {
      background: #1e1e2a;
      color: #d4d4e0;
      padding: 50px 0 0;
      margin-top: 40px;
    }
    .footer a {
      color: #d4d4e0;
      transition: color var(--transition);
    }
    .footer a:hover {
      color: #ffb347;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 30px;
      padding-bottom: 40px;
    }
    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 18px;
      color: #ffffff;
    }
    .footer-col p {
      font-size: 0.9rem;
      line-height: 1.8;
      color: #b0b0c0;
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      font-size: 0.9rem;
      color: #b0b0c0;
    }
    .footer-bottom {
      border-top: 1px solid #2e2e3e;
      padding: 22px 0;
      text-align: center;
      font-size: 0.85rem;
      color: #8888a0;
    }
    .footer-qrcode img {
      width: 120px;
      border-radius: 8px;
      margin-top: 10px;
    }
    /* ---------- 浮动客服与返回顶部 ---------- */
    .float-actions {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 90;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--surface);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      cursor: pointer;
      transition: all var(--transition);
      color: #1a1a2e;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      transform: scale(1.06);
    }
    #backToTop {
      opacity: 0;
      visibility: hidden;
    }
    #backToTop.visible {
      opacity: 1;
      visibility: visible;
    }
    /* ---------- 滚动渐入 ---------- */
    .fade-up {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* ---------- 响应式 ---------- */
    @media (max-width: 992px) {
      .hero .container {
        flex-direction: column;
        text-align: center;
      }
      .hero p {
        margin-left: auto;
        margin-right: auto;
      }
      .hero-actions {
        justify-content: center;
      }
      .hero-stats {
        justify-content: center;
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        gap: 4px;
        z-index: 99;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links li a {
        padding: 12px 16px;
        width: 100%;
      }
      .menu-toggle {
        display: flex;
      }
      .nav-actions .btn {
        display: none;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .form-card {
        padding: 28px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .hero-graphic {
        max-width: 300px;
      }
    }
    @media (max-width: 480px) {
      .container {
        padding: 0 16px;
      }
      .hero {
        padding: 40px 0 50px;
      }
      .hero-stats {
        gap: 20px;
      }
      .about-cards {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        font-size: 0.78rem;
        padding: 18px 0;
      }
      .btn-lg {
        padding: 14px 28px;
        font-size: 1rem;
      }
    }