:root {
      --bg-main: #fdfbf7;
      --bg-card: #ffffff;
      --text-main: #232220;
      --text-muted: #5e5c57;
      --graffiti-yellow: #ffe566;
      --graffiti-pink: #ff76ac;
      --graffiti-blue: #64b5f6;
      --graffiti-green: #81c784;
      --graffiti-orange: #ff9800;
      --graffiti-purple: #ba68c8;
      --border-dark: #222222;
      --shadow-pop: 4px 4px 0px #222222;
      --shadow-pop-lg: 6px 6px 0px #222222;
      --shadow-pop-hover: 2px 2px 0px #222222;
      --radius-doodle: 16px;
      --container-max: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      background-image: radial-gradient(#e2ded4 1.2px, transparent 1.2px);
      background-size: 24px 24px;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      display: block;
      max-width: 100%;
      height: auto;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }
    .section-wrap {
      padding: 60px 0;
      position: relative;
    }
    .section-title-wrap {
      text-align: center;
      margin-bottom: 40px;
    }
    .section-tag {
      display: inline-block;
      background: var(--graffiti-yellow);
      border: 2px solid var(--border-dark);
      padding: 4px 14px;
      font-size: 13px;
      font-weight: 700;
      border-radius: 20px;
      box-shadow: 2px 2px 0 var(--border-dark);
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 900;
      color: var(--text-main);
      display: inline-block;
      position: relative;
      padding: 0 10px;
    }
    .section-title::after {
      content: "";
      position: absolute;
      bottom: 2px;
      left: 0;
      width: 100%;
      height: 8px;
      background: var(--graffiti-pink);
      opacity: 0.35;
      z-index: -1;
      border-radius: 4px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      margin-top: 10px;
      max-width: 680px;
      margin-left: auto;
      margin-right: auto;
    }
    .doodle-card {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-doodle);
      box-shadow: var(--shadow-pop);
      padding: 24px;
      transition: all 0.2s ease;
      position: relative;
    }
    .doodle-card:hover {
      transform: translate(-2px, -2px);
      box-shadow: var(--shadow-pop-lg);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      padding: 12px 24px;
      border-radius: 12px;
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-pop);
      cursor: pointer;
      transition: all 0.15s ease;
      font-size: 15px;
      text-align: center;
    }
    .btn:hover {
      transform: translate(2px, 2px);
      box-shadow: var(--shadow-pop-hover);
    }
    .btn:active {
      transform: translate(4px, 4px);
      box-shadow: none;
    }
    .btn-primary {
      background-color: var(--graffiti-yellow);
      color: var(--text-main);
    }
    .btn-accent {
      background-color: var(--graffiti-pink);
      color: #ffffff;
    }
    .btn-cyan {
      background-color: var(--graffiti-blue);
      color: #ffffff;
    }
    .btn-dark {
      background-color: var(--border-dark);
      color: #ffffff;
    }

    /* 顶部导航 */
    .site-header {
      background: #ffffff;
      border-bottom: 2px solid var(--border-dark);
      position: sticky;
      top: 0;
      z-index: 999;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-area img {
      max-height: 42px;
      width: auto;
    }
    .brand-name {
      font-size: 20px;
      font-weight: 900;
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links a {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      padding: 8px 12px;
      border-radius: 8px;
      transition: background 0.15s ease;
    }
    .nav-links a:hover {
      background: var(--graffiti-yellow);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .nav-toggle {
      display: none;
      background: none;
      border: 2px solid var(--border-dark);
      padding: 6px 10px;
      border-radius: 8px;
      font-weight: 900;
      cursor: pointer;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 60px 0 50px;
      background: linear-gradient(180deg, rgba(255,229,102,0.18) 0%, rgba(253,251,247,1) 100%);
      border-bottom: 2px dashed var(--border-dark);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 36px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 38px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 18px;
      color: var(--text-main);
    }
    .hero-h1 span.highlight {
      background: var(--graffiti-yellow);
      padding: 0 6px;
      border-radius: 6px;
      border: 2px solid var(--border-dark);
      display: inline-block;
      box-shadow: 2px 2px 0 var(--border-dark);
    }
    .hero-p {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 28px;
    }
    .hero-badge-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .badge-item {
      font-size: 12px;
      font-weight: 700;
      background: #ffffff;
      border: 1.5px solid var(--border-dark);
      padding: 4px 10px;
      border-radius: 12px;
      box-shadow: 2px 2px 0 var(--border-dark);
    }
    .hero-visual-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: 20px;
      box-shadow: var(--shadow-pop-lg);
      padding: 24px;
      position: relative;
    }
    .visual-top-bar {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-bottom: 16px;
      border-bottom: 2px dashed #ecebe6;
      padding-bottom: 10px;
    }
    .dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      border: 1.5px solid var(--border-dark);
    }
    .dot-red { background: #ff76ac; }
    .dot-yellow { background: #ffe566; }
    .dot-green { background: #81c784; }
    .model-chip-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 14px;
    }
    .model-chip {
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      background: #f4f3ee;
      border: 1px solid var(--border-dark);
      border-radius: 6px;
    }
    .model-chip.hot {
      background: var(--graffiti-pink);
      color: #ffffff;
    }

    /* 数据指标栏 */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: -30px;
      position: relative;
      z-index: 10;
    }
    .metric-card {
      text-align: center;
      padding: 16px;
      background: #ffffff;
    }
    .metric-num {
      font-size: 30px;
      font-weight: 900;
      color: var(--text-main);
    }
    .metric-label {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-muted);
    }

    /* 网格卡片区 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .service-icon-box {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      border: 2px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 20px;
      margin-bottom: 14px;
      box-shadow: 2px 2px 0 var(--border-dark);
    }
    .card-title {
      font-size: 17px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .card-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测 */
    .rating-banner {
      background: var(--graffiti-yellow);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-doodle);
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: var(--shadow-pop);
      margin-bottom: 24px;
    }
    .score-badge {
      font-size: 38px;
      font-weight: 900;
      line-height: 1;
      background: #ffffff;
      padding: 8px 16px;
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      box-shadow: 3px 3px 0 var(--border-dark);
      display: inline-block;
    }
    .table-wrap {
      overflow-x: auto;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-doodle);
      box-shadow: var(--shadow-pop);
      background: #ffffff;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }
    .compare-table th, .compare-table td {
      padding: 14px 18px;
      border-bottom: 1px solid #ebe9e1;
      font-size: 14px;
    }
    .compare-table th {
      background: #faf8f2;
      font-weight: 800;
      border-bottom: 2px solid var(--border-dark);
    }
    .highlight-col {
      background: rgba(255, 229, 102, 0.25);
      font-weight: 700;
    }

    /* 流程时间线 */
    .step-list {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .step-item {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-doodle);
      padding: 20px;
      box-shadow: var(--shadow-pop);
      position: relative;
    }
    .step-num {
      position: absolute;
      top: -12px;
      left: 16px;
      background: var(--graffiti-pink);
      color: #ffffff;
      font-size: 12px;
      font-weight: 900;
      padding: 2px 10px;
      border-radius: 10px;
      border: 1.5px solid var(--border-dark);
    }

    /* 案例展示区图片 */
    .media-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .media-item {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-pop);
    }
    .media-item img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-bottom: 2px solid var(--border-dark);
    }
    .media-content {
      padding: 14px;
    }

    /* 用户评论 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .review-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-doodle);
      padding: 20px;
      box-shadow: var(--shadow-pop);
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }
    .reviewer-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      border: 2px solid var(--border-dark);
      background: var(--graffiti-yellow);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 14px;
    }

    /* FAQ */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      box-shadow: var(--shadow-pop);
      overflow: hidden;
    }
    .faq-question {
      padding: 16px 20px;
      font-weight: 800;
      font-size: 15px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      user-select: none;
    }
    .faq-question:hover {
      background: #faf9f5;
    }
    .faq-answer {
      padding: 0 20px 16px;
      font-size: 14px;
      color: var(--text-muted);
      display: none;
      border-top: 1px dashed #eae8df;
      padding-top: 12px;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-toggle-icon {
      font-size: 18px;
      font-weight: 900;
      transition: transform 0.2s ease;
    }

    /* 表单与联系 */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .form-group {
      margin-bottom: 14px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 2px solid var(--border-dark);
      border-radius: 8px;
      font-size: 14px;
      background: #ffffff;
      outline: none;
      font-family: inherit;
    }
    .form-control:focus {
      box-shadow: 2px 2px 0 var(--border-dark);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }
    .contact-info-list {
      list-style: none;
      margin-top: 16px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 14px;
    }
    .qr-box {
      display: flex;
      align-items: center;
      gap: 16px;
      background: #faf8f2;
      border: 2px dashed var(--border-dark);
      padding: 14px;
      border-radius: 12px;
      margin-top: 18px;
    }
    .qr-box img {
      width: 90px;
      height: 90px;
      border: 1px solid var(--border-dark);
      border-radius: 6px;
    }

    /* 行业资讯 & 链接 */
    .article-link-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-top: 10px;
    }
    .article-item {
      font-size: 14px;
      padding: 8px 12px;
      border: 1.5px solid var(--border-dark);
      border-radius: 8px;
      background: #ffffff;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }
    .friend-links-box a {
      font-size: 12px;
      font-weight: 700;
      background: #ffffff;
      border: 1.5px solid var(--border-dark);
      padding: 4px 10px;
      border-radius: 6px;
      box-shadow: 1.5px 1.5px 0 var(--border-dark);
    }
    .friend-links-box a:hover {
      background: var(--graffiti-yellow);
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 2px solid var(--border-dark);
      padding: 36px 0 24px;
      color: var(--text-main);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 24px;
    }
    .footer-col-title {
      font-size: 15px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .footer-bottom {
      border-top: 1px dashed #dcd9cf;
      padding-top: 18px;
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 浮动客服小工具 */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      background: var(--graffiti-yellow);
      border: 2px solid var(--border-dark);
      border-radius: 50px;
      padding: 10px 18px;
      box-shadow: var(--shadow-pop);
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 800;
      font-size: 14px;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .floating-kefu:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-pop-lg);
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .review-grid, .media-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
        margin-top: 0;
      }
      .step-list {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-container {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 2px solid var(--border-dark);
        flex-direction: column;
        padding: 16px 0;
      }
      .nav-links.active {
        display: flex;
      }
      .hero-h1 {
        font-size: 26px;
      }
      .grid-3, .grid-4, .grid-2, .review-grid, .media-gallery-grid, .step-list {
        grid-template-columns: 1fr;
      }
      .metrics-bar {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
      }
    }