:root {
      --candy-pink: #ff5e7e;
      --candy-purple: #7b2cbf;
      --candy-cyan: #06d6a0;
      --candy-orange: #ff9f1c;
      --candy-blue: #4361ee;
      --candy-yellow: #ffd166;
      --candy-bg-soft: #fbfbfe;
      --candy-card-bg: #ffffff;
      --candy-border: #f0e6f7;
      --text-main: #2b2d42;
      --text-muted: #6c757d;
      --max-width: 1200px;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 4px 14px rgba(123, 44, 191, 0.06);
      --shadow-md: 0 10px 30px rgba(67, 97, 238, 0.08);
      --shadow-hover: 0 16px 36px rgba(255, 94, 126, 0.16);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background: linear-gradient(180deg, #faf7fc 0%, #ffffff 40%, #f6faff 70%, #fff7fa 100%);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      min-height: 100vh;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid #fbe7ef;
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

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

    .nav-brand .brand-logo-wrap {
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, #ff5e7e 0%, #ff9f1c 100%);
      border-radius: 12px;
      padding: 4px;
      box-shadow: 0 4px 10px rgba(255, 94, 126, 0.25);
    }

    .nav-brand .brand-name {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, var(--candy-purple), var(--candy-pink));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-links li a {
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 600;
      color: #4a4e69;
      border-radius: 20px;
      transition: var(--transition);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--candy-pink);
      background: #fff0f4;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 700;
      border-radius: 30px;
      cursor: pointer;
      transition: var(--transition);
      border: 2px solid transparent;
      outline: none;
      text-align: center;
    }

    .btn-candy-primary {
      background: linear-gradient(135deg, #ff5e7e, #ff9f1c);
      color: #ffffff !important;
      box-shadow: 0 6px 18px rgba(255, 94, 126, 0.35);
    }

    .btn-candy-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(255, 94, 126, 0.45);
    }

    .btn-candy-ghost {
      background: #f4efff;
      color: var(--candy-purple) !important;
      border-color: #ebd9fc;
    }

    .btn-candy-ghost:hover {
      background: #ebd9fc;
      transform: translateY(-2px);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--candy-purple);
    }

    /* 页面通用板块 */
    .section-wrap {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 6px 16px;
      font-size: 13px;
      font-weight: 700;
      border-radius: 20px;
      margin-bottom: 12px;
      background: linear-gradient(135deg, #ffeef2, #f5effe);
      color: var(--candy-purple);
      border: 1px solid #ffd4e0;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: #1a1b26;
      line-height: 1.35;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 60px 0 70px;
      position: relative;
      background: radial-gradient(circle at 10% 20%, rgba(255, 94, 126, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(67, 97, 238, 0.08) 0%, transparent 40%);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr;
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-badge {
      align-self: center;
      margin: 0 auto 20px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 700;
      color: var(--candy-pink);
      border: 2px solid #ffccd5;
      box-shadow: 0 4px 12px rgba(255, 94, 126, 0.12);
    }

    .hero-h1 {
      font-size: 38px;
      font-weight: 900;
      color: #1d1e2c;
      letter-spacing: -0.5px;
      line-height: 1.3;
      margin-bottom: 22px;
    }

    .hero-h1 span {
      background: linear-gradient(135deg, #ff5e7e 0%, #7b2cbf 50%, #4361ee 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-p {
      font-size: 18px;
      color: #4a4e69;
      line-height: 1.8;
      margin: 0 auto 34px;
      max-width: 820px;
    }

    .hero-btn-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 44px;
      flex-wrap: wrap;
    }

    .hero-btn-group .btn-main-action {
      padding: 14px 34px;
      font-size: 17px;
      border-radius: 40px;
    }

    /* 纯 CSS 视觉状态面板 */
    .hero-stats-panel {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      border: 2px solid #f6e8fa;
    }

    .hero-stat-card {
      padding: 16px;
      border-radius: var(--radius-md);
      background: #faf7ff;
      border: 1px dashed #ded4f5;
      transition: var(--transition);
    }

    .hero-stat-card:hover {
      transform: translateY(-3px);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
      border-color: var(--candy-purple);
    }

    .hero-stat-val {
      font-size: 28px;
      font-weight: 800;
      color: var(--candy-purple);
      margin-bottom: 4px;
    }

    .hero-stat-label {
      font-size: 14px;
      font-weight: 600;
      color: #6c757d;
    }

    /* 标签云与模型生态 */
    .model-strip {
      padding: 20px 0;
      background: #ffffff;
      border-top: 1px solid #f0e6f7;
      border-bottom: 1px solid #f0e6f7;
    }

    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-tag {
      background: #fdf5f8;
      border: 1px solid #ffe3ec;
      color: #555b6e;
      padding: 6px 14px;
      border-radius: 12px;
      font-size: 13px;
      font-weight: 600;
      transition: var(--transition);
    }

    .model-tag:hover {
      background: var(--candy-pink);
      color: #ffffff;
      border-color: var(--candy-pink);
      transform: scale(1.05);
    }

    /* 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: 30px;
    }

    .candy-card {
      background: var(--candy-card-bg);
      border-radius: var(--radius-md);
      padding: 26px;
      border: 2px solid var(--candy-border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .candy-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: #ffc4d6;
    }

    .card-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      font-size: 22px;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, var(--candy-pink), var(--candy-purple));
    }

    .card-title {
      font-size: 19px;
      font-weight: 700;
      color: #1f2041;
      margin-bottom: 10px;
    }

    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 流程时间线 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .timeline-step {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 2px solid #e7d8f5;
      text-align: center;
      position: relative;
      transition: var(--transition);
    }

    .timeline-step:hover {
      transform: translateY(-4px);
      border-color: var(--candy-pink);
    }

    .step-badge {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, #06d6a0, #4361ee);
      color: #ffffff;
      font-weight: 800;
      font-size: 18px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }

    /* 案例展示 */
    .case-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 2px solid #f0e6f7;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #f4effa;
    }

    .case-img-wrap.square {
      aspect-ratio: 1 / 1;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }

    .case-info {
      padding: 20px;
    }

    .case-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    /* 评测对比表 */
    .comparison-section {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 2px solid #f3e5f5;
      box-shadow: var(--shadow-md);
    }

    .score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #fff0f4 0%, #f6f0ff 100%);
      padding: 24px 32px;
      border-radius: var(--radius-md);
      margin-bottom: 30px;
      border: 1px solid #ffd4e5;
    }

    .score-left h3 {
      font-size: 22px;
      color: #2b2d42;
      margin-bottom: 6px;
    }

    .score-stars {
      color: #ff9f1c;
      font-size: 20px;
    }

    .score-badge {
      text-align: right;
    }

    .score-num {
      font-size: 40px;
      font-weight: 900;
      color: var(--candy-pink);
      line-height: 1;
    }

    .score-max {
      font-size: 14px;
      color: #8d99ae;
      font-weight: 600;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #eee5f5;
    }

    .eval-table th {
      background: #faf6ff;
      color: #2b2d42;
      font-weight: 700;
      font-size: 15px;
    }

    .eval-table tr:hover td {
      background: #fffbfe;
    }

    .highlight-cell {
      color: var(--candy-purple);
      font-weight: 700;
      background: rgba(255, 94, 126, 0.03);
    }

    .tag-yes {
      background: #e6fcf5;
      color: #0ca678;
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
    }

    .tag-no {
      background: #fff5f5;
      color: #fa5252;
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
    }

    /* 评论区 */
    .testimonial-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 2px solid #f0e6f7;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .user-avatar-pill {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ffd166, #ff5e7e);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .user-meta h4 {
      font-size: 16px;
      color: #2b2d42;
    }

    .user-meta p {
      font-size: 13px;
      color: #8d99ae;
    }

    .testimonial-body {
      font-size: 14px;
      color: #4a4e69;
      line-height: 1.65;
    }

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

    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      border: 1px solid #ebd9fc;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(123, 44, 191, 0.03);
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: #2b2d42;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      background: #ffffff;
      transition: var(--transition);
      user-select: none;
    }

    .faq-question:hover {
      background: #faf5ff;
      color: var(--candy-purple);
    }

    .faq-icon {
      font-size: 18px;
      font-weight: bold;
      color: var(--candy-pink);
      transition: transform 0.3s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
      background: #fdfcff;
      border-top: 1px dashed #f0e6f7;
    }

    .faq-answer-inner {
      padding: 18px 24px;
      font-size: 14px;
      color: #555b6e;
      line-height: 1.7;
    }

    /* 表单与需求匹配 */
    .contact-form-card {
      background: #ffffff;
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 2px solid #f6e8fa;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      color: #333;
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 2px solid #ebd9fc;
      border-radius: var(--radius-sm);
      outline: none;
      transition: var(--transition);
      background: #fbf9fe;
      color: var(--text-main);
    }

    .form-control:focus {
      border-color: var(--candy-purple);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(123, 44, 191, 0.1);
    }

    /* 文章列表 */
    .article-pill-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item {
      padding: 16px 20px;
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid #f0e6f7;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: var(--transition);
    }

    .article-item:hover {
      border-color: var(--candy-pink);
      transform: translateX(6px);
      box-shadow: var(--shadow-sm);
    }

    .article-item a {
      color: #2b2d42;
      font-weight: 600;
      font-size: 15px;
    }

    .article-item span {
      font-size: 13px;
      color: var(--candy-pink);
      font-weight: 600;
    }

    /* 页脚 */
    .site-footer {
      background: #1f2041;
      color: #d1d5db;
      padding: 60px 0 30px;
      border-top: 4px solid var(--candy-pink);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: #ffffff;
      font-size: 22px;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 14px;
      color: #a0aec0;
      line-height: 1.7;
      margin-bottom: 16px;
    }

    .footer-title {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
      border-left: 3px solid var(--candy-pink);
      padding-left: 10px;
    }

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

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

    .footer-links li a {
      color: #cbd5e1;
      font-size: 14px;
    }

    .footer-links li a:hover {
      color: var(--candy-yellow);
      padding-left: 4px;
    }

    .friend-links-box {
      border-top: 1px solid #323558;
      padding-top: 24px;
      margin-bottom: 30px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 10px;
    }

    .friend-links-list a {
      color: #94a3b8;
      font-size: 13px;
      background: #2a2c54;
      padding: 4px 12px;
      border-radius: 6px;
    }

    .friend-links-list a:hover {
      color: #ffffff;
      background: var(--candy-purple);
    }

    .footer-bottom {
      border-top: 1px solid #323558;
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: #8d99ae;
    }

    /* 悬浮客服面板 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      position: relative;
      transition: var(--transition);
      border: 2px solid #ffd4e5;
      font-size: 20px;
    }

    .float-btn:hover {
      transform: scale(1.1);
      border-color: var(--candy-pink);
    }

    .qr-popup {
      position: absolute;
      right: 65px;
      bottom: 0;
      width: 170px;
      background: #ffffff;
      padding: 12px;
      border-radius: 12px;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
      border: 2px solid var(--candy-border);
      display: none;
      text-align: center;
    }

    .qr-popup img {
      width: 100%;
      height: auto;
      border-radius: 6px;
      margin-bottom: 6px;
    }

    .qr-popup p {
      font-size: 12px;
      font-weight: 700;
      color: #333;
    }

    .float-btn.kefu:hover .qr-popup {
      display: block;
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .grid-4, .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-stats-panel {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 2px solid #f0e6f7;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-h1 {
        font-size: 28px;
      }
      .grid-2, .grid-3, .grid-4, .process-timeline {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
      }
      .score-badge {
        text-align: center;
      }
    }