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

    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans SC', sans-serif;
      background-color: #fbf9f4;
      background-image: radial-gradient(circle at 10% 20%, rgba(255, 210, 120, 0.08) 0%, transparent 35%),
                        radial-gradient(circle at 90% 70%, rgba(120, 200, 255, 0.08) 0%, transparent 40%),
                        linear-gradient(135deg, #fefcf8 0%, #f8f4ec 100%);
      color: #1e1b16;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 多彩涂鸦风点缀 */
    .accent-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #ff8a4c;
      margin-right: 8px;
      position: relative;
      top: -1px;
    }

    .accent-dot.blue {
      background: #4c9aff;
    }

    .accent-dot.green {
      background: #4cc38a;
    }

    .accent-dot.pink {
      background: #ff6b9d;
    }

    .brush-bg {
      position: relative;
      display: inline-block;
      z-index: 0;
    }

    .brush-bg::after {
      content: '';
      position: absolute;
      left: -2px;
      right: -2px;
      bottom: 2px;
      height: 10px;
      background: rgba(255, 170, 80, 0.35);
      border-radius: 6px 12px 4px 10px;
      transform: rotate(-0.5deg);
      z-index: -1;
    }

    /* header / nav 统一容器 */
    .site-header {
      position: sticky;
      top: 0;
      background: rgba(255, 252, 247, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 2px solid #eadfce;
      padding: 10px 0;
      z-index: 100;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
      transition: box-shadow 0.2s;
    }

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

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 1.3rem;
      color: #1e1b16;
      text-decoration: none;
    }

    .brand img {
      max-width: 44px;
      height: auto;
      border-radius: 8px;
    }

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

    .nav-links li {
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 500;
      color: #3d3a35;
      text-decoration: none;
      border-radius: 30px;
      transition: background 0.2s, color 0.2s, transform 0.15s;
      white-space: nowrap;
    }

    .nav-links a:hover {
      background: #f0e6d6;
      color: #0f0d0a;
      transform: translateY(-1px);
    }

    .nav-cta {
      background: #ff8a4c;
      color: #fff !important;
      padding: 8px 20px !important;
      border-radius: 30px !important;
      font-weight: 600 !important;
      transition: background 0.2s, transform 0.15s;
    }

    .nav-cta:hover {
      background: #e67636 !important;
      transform: scale(1.02);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 2px solid #d8cebc;
      border-radius: 30px;
      padding: 6px 18px;
      font-size: 0.95rem;
      font-weight: 500;
      color: #3d3a35;
      cursor: pointer;
      transition: background 0.2s;
    }

    .menu-toggle:hover {
      background: #f0e6d6;
    }

    /* Hero 首屏 无图片 */
    .hero {
      padding: 60px 0 50px;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -80px;
      right: -60px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(255, 180, 120, 0.15) 0%, transparent 70%);
      border-radius: 50%;
      z-index: 0;
    }

    .hero::after {
      content: '';
      position: absolute;
      bottom: -100px;
      left: -40px;
      width: 280px;
      height: 280px;
      background: radial-gradient(circle, rgba(100, 160, 255, 0.1) 0%, transparent 70%);
      border-radius: 50%;
      z-index: 0;
    }

    .hero-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      background: #fff4e9;
      padding: 6px 20px 6px 16px;
      border-radius: 40px;
      font-size: 0.88rem;
      font-weight: 500;
      color: #a15e2c;
      border: 1.5px dashed #ffb77c;
      margin-bottom: 24px;
      animation: floatY 4s ease-in-out infinite;
    }

    @keyframes floatY {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-4px); }
    }

    .hero h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.01em;
      max-width: 900px;
      margin-bottom: 20px;
      color: #1a1612;
    }

    .hero h1 span {
      background: linear-gradient(120deg, #ff8a4c 0%, #ffaa4c 60%, #fbb03b 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      display: inline-block;
    }

    .hero-sub {
      font-size: 1.15rem;
      color: #4f4a43;
      max-width: 720px;
      margin-bottom: 36px;
    }

    .hero-actions {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
      justify-content: center;
      margin-bottom: 48px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 34px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 1rem;
      text-decoration: none;
      transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s;
      border: 2px solid transparent;
      cursor: pointer;
      line-height: 1.2;
    }

    .btn-primary {
      background: #ff8a4c;
      color: #fff;
      box-shadow: 0 8px 18px rgba(255, 138, 76, 0.3);
    }

    .btn-primary:hover {
      background: #e67636;
      transform: translateY(-2px) scale(1.01);
      box-shadow: 0 12px 24px rgba(255, 138, 76, 0.4);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid #cbbfae;
      color: #2e2a24;
    }

    .btn-outline:hover {
      background: #e9dfd1;
      border-color: #b8a990;
      transform: translateY(-2px);
    }

    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 30px 50px;
      background: rgba(255, 250, 242, 0.7);
      padding: 24px 40px;
      border-radius: 60px;
      border: 1.5px solid #f0e2d2;
      backdrop-filter: blur(4px);
    }

    .hero-stat-item {
      text-align: center;
    }

    .hero-stat-item strong {
      display: block;
      font-size: 1.8rem;
      font-weight: 800;
      color: #1e1b16;
      line-height: 1.2;
    }

    .hero-stat-item span {
      font-size: 0.85rem;
      color: #6b635a;
    }

    /* 通用 section 标题 */
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      margin-bottom: 12px;
      letter-spacing: -0.01em;
      color: #1a1612;
    }

    .section-sub {
      font-size: 1rem;
      color: #6b635a;
      max-width: 620px;
      margin-bottom: 36px;
    }

    .text-center {
      text-align: center;
    }

    .text-center .section-sub {
      margin-left: auto;
      margin-right: auto;
    }

    .section {
      padding: 64px 0;
      position: relative;
    }

    .section:nth-child(even) {
      background: rgba(255, 250, 242, 0.3);
    }

    .card {
      background: #ffffff;
      border-radius: 24px;
      padding: 28px 24px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
      border: 1.5px solid #efe6da;
      transition: box-shadow 0.25s, transform 0.25s;
    }

    .card:hover {
      box-shadow: 0 18px 40px rgba(255, 138, 76, 0.1);
      transform: translateY(-4px);
      border-color: #f7d9be;
    }

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

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    /* 服务卡片小图标 */
    .service-icon {
      width: 48px;
      height: 48px;
      background: #fff4e9;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 18px;
      border: 1.5px solid #ffe2c7;
    }

    /* 步骤流程 */
    .step-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      counter-reset: step-counter;
    }

    .step-item {
      flex: 1 1 180px;
      background: #fff;
      border-radius: 20px;
      padding: 24px 18px 24px 24px;
      border: 1.5px solid #efe6da;
      position: relative;
      transition: background 0.2s;
    }

    .step-item:hover {
      background: #fffaf3;
    }

    .step-item::before {
      counter-increment: step-counter;
      content: counter(step-counter);
      display: inline-block;
      font-size: 1.4rem;
      font-weight: 800;
      color: #ff8a4c;
      background: #fff0e4;
      width: 36px;
      height: 36px;
      line-height: 36px;
      text-align: center;
      border-radius: 12px;
      margin-bottom: 16px;
    }

    .step-item h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 0.9rem;
      color: #5b544b;
    }

    /* 表格 */
    .table-wrap {
      overflow-x: auto;
      border-radius: 24px;
      border: 1.5px solid #efe6da;
      background: #fff;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.02);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.95rem;
      min-width: 700px;
    }

    .compare-table th {
      background: #fdf5ec;
      text-align: left;
      padding: 18px 16px;
      font-weight: 700;
      color: #2e2a24;
      border-bottom: 2px solid #f0e2d2;
      white-space: nowrap;
    }

    .compare-table td {
      padding: 16px;
      border-bottom: 1px solid #f3ede5;
      color: #3d3a35;
      vertical-align: top;
    }

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

    .star-rating {
      color: #f4b740;
      font-size: 1.1rem;
      letter-spacing: 2px;
    }

    .score-badge {
      display: inline-block;
      background: #ff8a4c;
      color: #fff;
      padding: 2px 12px;
      border-radius: 20px;
      font-weight: 700;
      font-size: 0.85rem;
    }

    /* 评论卡片 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .review-card {
      background: #fff;
      border-radius: 20px;
      padding: 24px;
      border: 1.5px solid #efe6da;
      box-shadow: 0 6px 16px rgba(0, 0, 0, 0.02);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .review-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 28px rgba(0, 0, 0, 0.05);
    }

    .review-text {
      font-size: 0.95rem;
      color: #3d3a35;
      margin-bottom: 16px;
      line-height: 1.65;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .avatar-placeholder {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #f0e6d6;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #ff8a4c;
      font-size: 1rem;
    }

    /* FAQ */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      border-bottom: 1.5px solid #efe6da;
      padding: 6px 0;
    }

    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 0;
      font-weight: 600;
      font-size: 1.05rem;
      color: #1e1b16;
      cursor: pointer;
      list-style: none;
      transition: color 0.2s;
    }

    .faq-question:hover {
      color: #ff8a4c;
    }

    .faq-question::-webkit-details-marker {
      display: none;
    }

    .faq-question::after {
      content: '+';
      font-size: 1.6rem;
      font-weight: 300;
      color: #b8a990;
      transition: transform 0.2s;
    }

    details[open] .faq-question::after {
      content: '−';
      transform: rotate(180deg);
      color: #ff8a4c;
    }

    .faq-answer {
      padding: 0 0 20px;
      color: #5b544b;
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* 文章列表 */
    .article-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .article-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 14px 18px;
      border-radius: 16px;
      background: #fff;
      border: 1px solid #f3ede5;
      text-decoration: none;
      color: #2e2a24;
      transition: background 0.2s, transform 0.2s;
    }

    .article-item:hover {
      background: #fffaf3;
      transform: translateX(4px);
      border-color: #f7d9be;
    }

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

    .form-field {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-field.full {
      grid-column: span 2;
    }

    .form-field label {
      font-size: 0.9rem;
      font-weight: 500;
      color: #3d3a35;
    }

    .form-field input,
    .form-field select,
    .form-field textarea {
      padding: 12px 16px;
      border: 1.5px solid #e3d9cd;
      border-radius: 14px;
      font-size: 0.95rem;
      font-family: inherit;
      background: #fff;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .form-field input:focus,
    .form-field select:focus,
    .form-field textarea:focus {
      outline: none;
      border-color: #ff8a4c;
      box-shadow: 0 0 0 3px rgba(255, 138, 76, 0.15);
    }

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

    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      right: 24px;
      bottom: 100px;
      width: 60px;
      height: 60px;
      background: #ff8a4c;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.6rem;
      box-shadow: 0 8px 24px rgba(255, 138, 76, 0.4);
      cursor: pointer;
      z-index: 200;
      border: none;
      transition: transform 0.2s, background 0.2s;
    }

    .float-kefu:hover {
      background: #e67636;
      transform: scale(1.08);
    }

    .back-top {
      position: fixed;
      right: 24px;
      bottom: 24px;
      width: 48px;
      height: 48px;
      background: #fff;
      border: 1.5px solid #e3d9cd;
      border-radius: 50%;
      display: none;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: #3d3a35;
      cursor: pointer;
      z-index: 200;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
      transition: background 0.2s;
    }

    .back-top.show {
      display: flex;
    }

    .back-top:hover {
      background: #f5ede2;
    }

    /* footer */
    .site-footer {
      background: #2e2a24;
      color: #efe6da;
      padding: 56px 0 28px;
      margin-top: 32px;
      border-top: 6px solid #ff8a4c;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand p {
      color: #cdc3b8;
      font-size: 0.9rem;
      margin: 12px 0;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: #cdc3b8;
      text-decoration: none;
      font-size: 0.9rem;
      transition: color 0.2s;
    }

    .footer-links a:hover {
      color: #ffb77c;
    }

    .footer-bottom {
      border-top: 1px solid #4f4a43;
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      font-size: 0.85rem;
      color: #b0a89e;
    }

    /* 通用动画类 */
    .reveal {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .review-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        padding-top: 12px;
        gap: 4px;
      }
      .nav-links.open {
        display: flex;
      }
      .menu-toggle {
        display: inline-block;
      }
      .nav-wrap {
        row-gap: 8px;
      }
      .nav-links a {
        padding: 10px 14px;
        width: 100%;
        text-align: left;
        border-radius: 12px;
      }
      .hero h1 {
        font-size: 2rem;
      }
      .grid-3,
      .grid-2,
      .grid-4,
      .review-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-field.full {
        grid-column: span 1;
      }
      .hero-stats {
        gap: 20px 30px;
        padding: 18px 24px;
        border-radius: 36px;
      }
      .section {
        padding: 48px 0;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .compare-table {
        font-size: 0.85rem;
      }
      .float-kefu {
        width: 52px;
        height: 52px;
        font-size: 1.4rem;
        right: 16px;
        bottom: 88px;
      }
      .back-top {
        right: 16px;
        bottom: 16px;
        width: 44px;
        height: 44px;
      }
    }

    @media (max-width: 480px) {
      .hero h1 {
        font-size: 1.65rem;
      }
      .hero-actions {
        flex-direction: column;
        width: 100%;
      }
      .btn {
        width: 100%;
      }
    }

    /* 画布装饰小元素，用于涂鸦风 */
    .scribble-line {
      height: 3px;
      width: 60px;
      background: #ff8a4c;
      border-radius: 4px;
      margin: 16px 0;
      transform: rotate(-1deg);
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 16px;
    }

    .tag {
      background: #fff4e9;
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 0.9rem;
      color: #a15e2c;
      border: 1px solid #ffe2c7;
      transition: background 0.2s, transform 0.15s;
    }

    .tag:hover {
      background: #ffe2c7;
      transform: translateY(-2px);
    }

    /* 确保图片响应式 */
    .ai-page-image,
    .ai-page-logo {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .media-box {
      border-radius: 20px;
      overflow: hidden;
      background: #fff;
      border: 1.5px solid #efe6da;
    }

    .media-box img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: contain;
    }