:root {
      --primary: #ff5e7e;
      --primary-hover: #e04866;
      --secondary: #6366f1;
      --accent-cyan: #06b6d4;
      --accent-yellow: #f59e0b;
      --accent-green: #10b981;
      --accent-pink: #ec4899;
      --candy-bg-1: #fff5f7;
      --candy-bg-2: #f0f7ff;
      --candy-bg-3: #fdf4ff;
      --bg-main: #fcfbfe;
      --card-bg: #ffffff;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --border-color: #f1f5f9;
      --border-candy: #fed7e2;
      --radius-sm: 10px;
      --radius-md: 18px;
      --radius-lg: 26px;
      --radius-full: 9999px;
      --shadow-soft: 0 10px 30px -5px rgba(255, 94, 126, 0.08), 0 4px 12px -2px rgba(99, 102, 241, 0.05);
      --shadow-hover: 0 20px 35px -8px rgba(255, 94, 126, 0.18), 0 8px 16px -4px rgba(99, 102, 241, 0.1);
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
    }

    body {
      line-height: 1.65;
      background: radial-gradient(circle at 10% 10%, #fff1f2 0%, transparent 40%),
                  radial-gradient(circle at 90% 20%, #eff6ff 0%, transparent 40%),
                  radial-gradient(circle at 50% 80%, #fdf2f8 0%, transparent 50%),
                  var(--bg-main);
      min-height: 100vh;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(241, 245, 249, 0.8);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

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

    .brand-box .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

    .brand-title {
      font-size: 20px;
      font-weight: 800;
      background: linear-gradient(135deg, #ff5e7e 0%, #6366f1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-full);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: #fff0f3;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-full);
      font-size: 14px;
      font-weight: 700;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      text-align: center;
    }

    .btn-candy-primary {
      background: linear-gradient(135deg, #ff5e7e 0%, #ff8a65 100%);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(255, 94, 126, 0.35);
    }

    .btn-candy-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(255, 94, 126, 0.45);
      color: #ffffff;
    }

    .btn-candy-secondary {
      background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
      color: #ffffff;
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    }

    .btn-candy-secondary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(99, 102, 241, 0.4);
      color: #ffffff;
    }

    .btn-candy-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 1.5px solid #e2e8f0;
    }

    .btn-candy-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #fff5f7;
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
      padding: 6px;
    }

    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2.5px;
      background-color: var(--text-main);
      border-radius: 2px;
      transition: all 0.3s ease;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 70px 0 60px;
      text-align: center;
      position: relative;
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffe4e9;
      border: 1px solid #fecdd6;
      border-radius: var(--radius-full);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 24px;
      animation: floatBadge 3s ease-in-out infinite;
    }

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

    .hero-title {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--text-main);
    }

    .hero-title span {
      background: linear-gradient(135deg, #ff5e7e 0%, #ec4899 40%, #6366f1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 17px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 48px;
    }

    .btn-hero-official {
      padding: 14px 34px;
      font-size: 16px;
      background: linear-gradient(135deg, #ff5e7e 0%, #ff7849 50%, #ff3366 100%);
      color: #ffffff;
      border-radius: var(--radius-full);
      box-shadow: 0 8px 24px rgba(255, 94, 126, 0.4);
      font-weight: 800;
      letter-spacing: 0.5px;
    }

    .btn-hero-official:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 30px rgba(255, 94, 126, 0.55);
      color: #ffffff;
    }

    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1050px;
      margin: 0 auto;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid rgba(254, 215, 226, 0.6);
      padding: 24px 18px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-soft);
      text-align: center;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, #ff5e7e, #6366f1);
    }

    .metric-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }

    .metric-value {
      font-size: 32px;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 4px;
      font-family: inherit;
    }

    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 通用Section */
    .section-wrap {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: #fdf2f8;
      border: 1px solid #fbcfe8;
      border-radius: var(--radius-full);
      font-size: 12px;
      font-weight: 700;
      color: var(--accent-pink);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.35;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.65;
    }

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

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

    .candy-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-soft);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .candy-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: #fed7e2;
    }

    .card-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: bold;
      margin-bottom: 18px;
      background: #fff1f2;
      color: var(--primary);
    }

    .candy-card:nth-child(2n) .card-icon-box {
      background: #eff6ff;
      color: var(--secondary);
    }

    .candy-card:nth-child(3n) .card-icon-box {
      background: #ecfeff;
      color: var(--accent-cyan);
    }

    .candy-card:nth-child(4n) .card-icon-box {
      background: #fffbeb;
      color: var(--accent-yellow);
    }

    .card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

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

    /* 平台矩阵芯片 */
    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      padding: 8px 16px;
      border-radius: var(--radius-full);
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      background: #fff1f2;
      border-color: #fda4af;
      color: var(--primary);
      transform: scale(1.05);
    }

    /* 流程与步骤 */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 20px;
      text-align: center;
      box-shadow: var(--shadow-soft);
      position: relative;
    }

    .step-num {
      width: 40px;
      height: 40px;
      line-height: 40px;
      background: linear-gradient(135deg, #ff5e7e 0%, #6366f1 100%);
      color: #ffffff;
      font-weight: 800;
      border-radius: 50%;
      margin: 0 auto 16px;
      font-size: 16px;
      box-shadow: 0 4px 10px rgba(255, 94, 126, 0.3);
    }

    .step-name {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 评测与对比模块 */
    .review-score-panel {
      background: linear-gradient(135deg, #ffffff 0%, #fff5f7 100%);
      border: 2px solid #fecdd3;
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-soft);
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .score-left {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .score-badge {
      background: linear-gradient(135deg, #ff5e7e, #ec4899);
      color: #fff;
      padding: 20px 28px;
      border-radius: var(--radius-md);
      text-align: center;
    }

    .score-num {
      font-size: 44px;
      font-weight: 900;
      line-height: 1;
    }

    .score-max {
      font-size: 13px;
      opacity: 0.9;
    }

    .score-details h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 18px;
      font-weight: bold;
      margin-bottom: 6px;
    }

    .score-desc {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 对比表格 */
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
    }

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

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table tr:hover td {
      background: #fffbfc;
    }

    .compare-highlight {
      background: #fff5f7 !important;
      font-weight: 700;
      color: var(--primary);
    }

    /* 媒体与素材展示 */
    .media-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      transition: all 0.3s ease;
    }

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

    .media-img-wrap {
      width: 100%;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: #f1f5f9;
    }

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

    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .media-card:hover .media-img-wrap img {
      transform: scale(1.04);
    }

    .media-content {
      padding: 20px;
    }

    .media-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .media-desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 用户评论网格 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid #f1f5f9;
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 18px;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f8fafc;
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ffd1dc, #d8b4fe);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: #4a044e;
    }

    .reviewer-name {
      font-size: 14px;
      font-weight: 700;
    }

    .reviewer-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ 手风琴 */
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
      transition: all 0.3s ease;
    }

    .faq-item.active {
      border-color: #fecdd3;
      box-shadow: var(--shadow-soft);
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      color: var(--primary);
      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, padding 0.35s ease;
      background: #fffdfd;
      padding: 0 22px;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 22px 20px 22px;
    }

    /* 表单与需求匹配 */
    .form-box-layout {
      background: #ffffff;
      border: 1px solid var(--border-candy);
      border-radius: var(--radius-lg);
      padding: 44px;
      box-shadow: var(--shadow-soft);
      max-width: 860px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }

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

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1.5px solid #e2e8f0;
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: border-color 0.25s ease;
      background: #fafafa;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
    }

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

    /* 资讯与百科文章 */
    .articles-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .article-item-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.25s ease;
    }

    .article-item-card:hover {
      border-color: var(--primary);
      background: #fffbfc;
      transform: translateX(4px);
    }

    .article-link-title {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    .article-tag {
      font-size: 12px;
      color: var(--secondary);
      background: #eef2ff;
      padding: 2px 8px;
      border-radius: 4px;
      white-space: nowrap;
      margin-left: 12px;
    }

    /* 友情链接与底部 */
    .friend-links-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 30px;
    }

    .friend-links-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

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

    .friend-links-list a {
      font-size: 13px;
      color: var(--text-muted);
      background: #f8fafc;
      padding: 4px 12px;
      border-radius: var(--radius-sm);
    }

    .friend-links-list a:hover {
      color: var(--primary);
      background: #fff0f3;
    }

    /* Footer */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 30px;
      color: var(--text-muted);
      font-size: 14px;
      margin-top: 40px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 36px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

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

    .footer-contact-info p {
      margin-bottom: 6px;
      font-size: 13px;
    }

    .footer-qr-box {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 12px;
    }

    .footer-qr-box img {
      width: 80px;
      height: 80px;
      border-radius: 8px;
      border: 1px solid #e2e8f0;
      display: block;
    }

    .footer-qr-text {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.4;
    }

    .footer-bottom {
      border-top: 1px solid #f1f5f9;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: var(--text-light);
    }

    /* 浮动工具栏 */
    .float-toolbar {
      position: fixed;
      right: 20px;
      bottom: 40px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 99;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid #fed7e2;
      box-shadow: 0 4px 14px rgba(0,0,0,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      font-size: 18px;
      font-weight: bold;
      transition: all 0.25s ease;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.1);
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-metrics-grid,
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .candy-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .candy-grid-3,
      .media-card-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-bottom: 1px solid #f1f5f9;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-toggle {
        display: flex;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-subtitle {
        font-size: 15px;
      }
      .candy-grid-3,
      .candy-grid-4,
      .hero-metrics-grid,
      .flow-steps-grid,
      .media-card-grid,
      .reviews-grid,
      .form-grid,
      .articles-list {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .review-score-panel {
        flex-direction: column;
        text-align: center;
      }
      .score-left {
        flex-direction: column;
      }
      .form-box-layout {
        padding: 24px;
      }
    }