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

    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
      background: #fff9f5;
      color: #1a1a1a;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

    /* 色彩体系 */
    :root {
      --primary: #ff5e1a;
      --primary-dark: #d94a0e;
      --primary-light: #fff0e8;
      --secondary: #2b1c12;
      --accent: #ffb347;
      --gray-bg: #fdf6f0;
      --card-bg: #ffffff;
      --text-dark: #1f1a16;
      --text-mid: #4a3e36;
      --text-light: #75655b;
      --border-light: #ffe2d0;
      --shadow-sm: 0 6px 20px rgba(255, 94, 26, 0.08);
      --shadow-md: 0 12px 30px rgba(255, 94, 26, 0.12);
      --shadow-hover: 0 20px 40px rgba(255, 94, 26, 0.18);
    }

    h1, h2, h3, h4 {
      font-weight: 700;
      line-height: 1.25;
      color: var(--text-dark);
    }

    h2 {
      font-size: 2.2rem;
      margin-bottom: 1.2rem;
      letter-spacing: -0.02em;
      position: relative;
    }

    h2::after {
      content: '';
      display: block;
      width: 64px;
      height: 4px;
      background: var(--primary);
      border-radius: 100px;
      margin-top: 12px;
    }

    h3 {
      font-size: 1.4rem;
      margin-bottom: 0.8rem;
    }

    p {
      color: var(--text-mid);
    }

    section {
      padding: 72px 0;
      position: relative;
    }

    /* 背景氛围贯穿 */
    section:nth-child(odd) {
      background: #fff9f5;
    }

    section:nth-child(even) {
      background: #ffffff;
    }

    /* 按钮 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--primary);
      color: #ffffff;
      font-weight: 600;
      font-size: 1rem;
      padding: 14px 32px;
      border-radius: 60px;
      border: none;
      cursor: pointer;
      text-decoration: none;
      transition: all 0.25s ease;
      box-shadow: 0 10px 20px -8px rgba(255, 94, 26, 0.4);
      letter-spacing: 0.3px;
    }

    .btn:hover {
      background: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: 0 18px 28px -8px rgba(255, 94, 26, 0.55);
    }

    .btn:active {
      transform: translateY(0);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      box-shadow: none;
    }

    .btn-outline:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
      transform: translateY(-3px);
    }

    /* 顶部导航 */
    .navbar {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      position: sticky;
      top: 0;
      z-index: 100;
      border-bottom: 1px solid var(--border-light);
      padding: 10px 0;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
    }

    .logo img {
      height: 40px;
      width: auto;
    }

    .logo-text {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-dark);
      letter-spacing: -0.5px;
    }

    .logo-text span {
      color: var(--primary);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* 按要求设为0 */
      flex-wrap: wrap;
      list-style: none;
    }

    .nav-links li {
      margin: 0 2px;
    }

    .nav-links a {
      display: block;
      padding: 8px 12px;
      color: var(--text-mid);
      text-decoration: none;
      font-size: 0.9rem;
      font-weight: 500;
      border-radius: 40px;
      transition: all 0.2s;
    }

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

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

    .nav-actions .btn {
      padding: 10px 20px;
      font-size: 0.9rem;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.8rem;
      cursor: pointer;
      color: var(--text-dark);
      line-height: 1;
    }

    /* Hero 首屏 (无图) */
    .hero {
      background: linear-gradient(145deg, #fff4ee 0%, #ffe8db 100%);
      padding: 96px 0 88px;
      overflow: hidden;
      position: relative;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -20%;
      right: -10%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(255,94,26,0.12) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-content {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 24px;
      max-width: 780px;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      background: var(--primary);
      color: #ffffff;
      font-size: 0.85rem;
      font-weight: 600;
      padding: 6px 18px;
      border-radius: 100px;
      letter-spacing: 0.5px;
      display: inline-block;
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.9; transform: scale(1.02); }
    }

    .hero h1 {
      font-size: 3.2rem;
      letter-spacing: -0.03em;
      color: var(--text-dark);
    }

    .hero h1 span {
      color: var(--primary);
      background: linear-gradient(120deg, #ff5e1a, #ff9142);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-mid);
      max-width: 620px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      margin-top: 8px;
    }

    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 40px;
      margin-top: 32px;
      padding-top: 24px;
      border-top: 2px solid rgba(255, 94, 26, 0.2);
    }

    .hero-stat-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .hero-stat-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }

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

    /* 卡片通用 */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 28px;
      margin-top: 24px;
    }

    .card {
      background: var(--card-bg);
      border-radius: 28px;
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }

    .card-icon {
      font-size: 2rem;
      margin-bottom: 6px;
      color: var(--primary);
    }

    .card h3 {
      font-size: 1.25rem;
      margin-bottom: 0;
    }

    .card p {
      font-size: 0.95rem;
      line-height: 1.6;
      color: var(--text-mid);
    }

    .tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 8px;
    }

    .tag {
      background: var(--primary-light);
      color: var(--primary-dark);
      padding: 4px 14px;
      border-radius: 40px;
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 0.2px;
    }

    /* 素材展示区（能展示图片，但非首屏） */
    .media-showcase {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      align-items: center;
      margin-top: 24px;
    }

    .media-item {
      flex: 1 1 240px;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: box-shadow 0.3s;
      background: #fff;
    }

    .media-item:hover {
      box-shadow: var(--shadow-md);
    }

    .media-item img {
      width: 100%;
      height: auto;
      display: block;
    }

    .banner-duo {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      margin: 24px 0;
    }

    .banner-duo img {
      flex: 1 1 280px;
      max-width: 100%;
      border-radius: 24px;
      box-shadow: var(--shadow-sm);
    }

    /* 对比表格 */
    .table-wrapper {
      overflow-x: auto;
      margin: 32px 0 16px;
      border-radius: 24px;
      border: 1px solid var(--border-light);
      background: #fff;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.95rem;
      min-width: 680px;
    }

    th {
      background: var(--primary-light);
      color: var(--primary-dark);
      text-align: left;
      padding: 16px 20px;
      font-weight: 700;
      font-size: 0.9rem;
      letter-spacing: 0.3px;
    }

    td {
      padding: 16px 20px;
      border-bottom: 1px solid #ffe8db;
      color: var(--text-mid);
    }

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

    .rating-badge {
      background: var(--primary);
      color: #fff;
      padding: 5px 14px;
      border-radius: 40px;
      font-weight: 700;
      font-size: 0.9rem;
      display: inline-block;
    }

    /* 用户评论 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 24px;
      margin-top: 24px;
    }

    .review-card {
      background: #fff;
      border-radius: 24px;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      border-left: 6px solid var(--primary);
      transition: transform 0.2s;
    }

    .review-card:hover {
      transform: scale(1.01);
    }

    .review-text {
      font-size: 0.95rem;
      color: var(--text-mid);
      line-height: 1.7;
      margin-bottom: 14px;
      font-style: italic;
    }

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

    .review-avatar {
      width: 36px;
      height: 36px;
      background: var(--primary-light);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary-dark);
      font-size: 1.1rem;
    }

    .review-name {
      font-weight: 600;
      font-size: 0.9rem;
    }

    .review-role {
      font-size: 0.75rem;
      color: var(--text-light);
    }

    /* FAQ 折叠 */
    .faq-list {
      max-width: 840px;
      margin: 24px auto 0;
    }

    .faq-item {
      background: #fff;
      border-radius: 18px;
      margin-bottom: 12px;
      border: 1px solid var(--border-light);
      overflow: hidden;
      transition: box-shadow 0.2s;
    }

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

    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      color: var(--text-dark);
      background: #fff;
      transition: background 0.2s;
    }

    .faq-question::after {
      content: '+';
      font-size: 1.6rem;
      color: var(--primary);
      font-weight: 300;
      line-height: 1;
      transition: transform 0.2s;
    }

    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
      color: var(--primary-dark);
    }

    .faq-answer {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.2s;
      color: var(--text-mid);
      background: #fff;
      font-size: 0.95rem;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 20px 24px;
    }

    /* 表单 */
    .form-box {
      background: #fff;
      padding: 36px 32px;
      border-radius: 36px;
      box-shadow: var(--shadow-md);
      max-width: 720px;
      margin: 0 auto;
    }

    .form-row {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
    }

    .form-group {
      flex: 1 1 220px;
      display: flex;
      flex-direction: column;
      gap: 6px;
      margin-bottom: 6px;
    }

    .form-group label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-dark);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      padding: 14px 18px;
      border-radius: 18px;
      border: 2px solid #f0e0d8;
      background: #fffaf7;
      font-size: 0.95rem;
      transition: border 0.2s;
      font-family: inherit;
      outline: none;
      width: 100%;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      background: #fff;
    }

    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }

    .form-submit {
      margin-top: 18px;
      width: 100%;
      justify-content: center;
    }

    /* 页脚 */
    footer {
      background: #2b1c12;
      color: #fff5f0;
      padding: 56px 0 28px;
      margin-top: 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 36px;
      text-align: left;
    }

    .footer-col p, .footer-col a {
      color: #e0cdc2;
      font-size: 0.9rem;
      text-decoration: none;
      line-height: 1.9;
    }

    .footer-col a:hover {
      color: var(--primary);
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 18px;
      font-weight: 600;
    }

    .footer-bottom {
      border-top: 1px solid #4e3e34;
      margin-top: 40px;
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-size: 0.85rem;
      color: #bfaea2;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 16px 24px;
      margin: 12px 0 0;
    }

    .friend-links a {
      color: #e0cdc2;
      text-decoration: none;
      font-size: 0.85rem;
    }

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

    /* 浮动客服 */
    .float-service {
      position: fixed;
      bottom: 28px;
      right: 28px;
      z-index: 200;
      display: flex;
      flex-direction: column;
      align-items: flex-end;
      gap: 12px;
    }

    .service-btn {
      width: 56px;
      height: 56px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      border: none;
      transition: all 0.25s;
    }

    .service-btn:hover {
      transform: scale(1.08);
      background: var(--primary-dark);
    }

    .qr-popup {
      background: #fff;
      padding: 16px;
      border-radius: 24px;
      box-shadow: var(--shadow-md);
      display: none;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      border: 1px solid var(--border-light);
    }

    .qr-popup img {
      width: 140px;
      height: 140px;
      object-fit: contain;
      border-radius: 12px;
    }

    .qr-popup p {
      font-size: 0.75rem;
      color: var(--text-mid);
      font-weight: 500;
    }

    .float-service.show-qr .qr-popup {
      display: flex;
    }

    /* 返回顶部 */
    .back-to-top {
      position: fixed;
      bottom: 100px;
      right: 36px;
      background: #fff;
      border: 1px solid var(--border-light);
      width: 44px;
      height: 44px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s;
      color: var(--primary);
      font-size: 1.3rem;
      z-index: 150;
      opacity: 0;
      visibility: hidden;
    }

    .back-to-top.visible {
      opacity: 1;
      visibility: visible;
    }

    .back-to-top:hover {
      background: var(--primary-light);
    }

    /* 滚动渐入 */
    .fade-in {
      opacity: 1;
      transform: translateY(0);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .fade-in:not(.visible) {
      opacity: 0;
      transform: translateY(30px);
    }

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

    /* 响应式 */
    @media (max-width: 900px) {
      .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 4px;
        padding: 16px 0 8px;
        border-top: 1px solid var(--border-light);
      }

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

      .nav-links li {
        width: 100%;
        margin: 0;
      }

      .nav-links a {
        padding: 10px 16px;
        font-size: 1rem;
      }

      .menu-toggle {
        display: block;
      }

      .nav-actions {
        display: none;
      }

      .hero h1 {
        font-size: 2.4rem;
      }

      .hero-stats {
        gap: 24px;
      }

      .hero {
        padding: 64px 0 56px;
      }

      h2 {
        font-size: 1.8rem;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media (max-width: 600px) {
      .hero h1 {
        font-size: 2rem;
      }

      .hero-desc {
        font-size: 1rem;
      }

      section {
        padding: 56px 0;
      }

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

    /* 工具类 */
    .text-center {
      text-align: center;
    }

    .mt-40 {
      margin-top: 40px;
    }

    .mt-24 {
      margin-top: 24px;
    }

    .flex-wrap {
      flex-wrap: wrap;
    }

    .rating-stars {
      color: #ffb347;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }

    .icon-svg {
      display: inline-block;
      width: 1em;
      height: 1em;
      stroke-width: 0;
      stroke: currentColor;
      fill: currentColor;
    }