:root {
      --primary-yellow: #FFB800;
      --primary-hover: #FFA000;
      --primary-light: #FFF8E7;
      --accent-gold: #FF8F00;
      --dark-text: #1E293B;
      --sub-text: #475569;
      --light-text: #94A3B8;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --card-border: #F1F5F9;
      --border-accent: #FFE082;
      --shadow-sm: 0 2px 8px rgba(255, 184, 0, 0.08);
      --shadow-md: 0 8px 24px rgba(255, 184, 0, 0.12);
      --shadow-hover: 0 12px 32px rgba(255, 184, 0, 0.2);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-width: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--dark-text);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    ul, ol {
      list-style: none;
    }

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

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

    .section-padding {
      padding: 80px 0;
    }

    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-badge {
      display: inline-block;
      background: var(--primary-light);
      color: var(--accent-gold);
      border: 1px solid var(--border-accent);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 12px;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--dark-text);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--sub-text);
      max-width: 680px;
      margin: 0 auto;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: none;
      transition: all 0.25s ease;
      font-size: 15px;
    }

    .btn-primary {
      background: linear-gradient(135deg, #FFC727 0%, #FF9900 100%);
      color: #000000;
      box-shadow: 0 4px 14px rgba(255, 160, 0, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 160, 0, 0.45);
      color: #000000;
    }

    .btn-outline {
      background: #FFFFFF;
      border: 2px solid var(--primary-yellow);
      color: var(--dark-text);
    }

    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    /* 导航栏 */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 184, 0, 0.2);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

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

    .logo-box img {
      height: 38px;
      width: auto;
    }

    .logo-text {
      font-size: 20px;
      font-weight: 800;
      color: var(--dark-text);
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-item {
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 600;
      color: var(--sub-text);
      border-radius: var(--radius-sm);
      transition: all 0.2s;
    }

    .nav-item:hover, .nav-item.active {
      color: #D97706;
      background: var(--primary-light);
    }

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

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--dark-text);
      cursor: pointer;
    }

    /* 首屏 HERO */
    .hero-section {
      position: relative;
      padding: 90px 0 100px;
      background: linear-gradient(180deg, #FFFBEB 0%, #FFFFFF 100%);
      border-bottom: 1px solid rgba(255, 184, 0, 0.15);
      overflow: hidden;
    }

    .hero-shape-1 {
      position: absolute;
      top: -100px;
      right: -80px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(255, 214, 0, 0.2) 0%, rgba(255, 255, 255, 0) 70%);
      pointer-events: none;
    }

    .hero-shape-2 {
      position: absolute;
      bottom: -60px;
      left: -60px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(255, 179, 0, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
      pointer-events: none;
    }

    .hero-content {
      text-align: center;
      max-width: 880px;
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #FEF3C7;
      color: #B45309;
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 24px;
      border: 1px solid #FDE68A;
    }

    .hero-title {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      color: #0F172A;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #D97706 0%, #F59E0B 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--sub-text);
      line-height: 1.7;
      margin-bottom: 36px;
    }

    .hero-btns {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }

    .hero-btn-official {
      background: #000000;
      color: #FFC727;
      border: 2px solid #FFC727;
      font-size: 16px;
      padding: 14px 34px;
      border-radius: var(--radius-sm);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    }

    .hero-btn-official:hover {
      background: #1E293B;
      color: #FFD54F;
      transform: translateY(-2px);
    }

    /* 指标栏 */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: var(--bg-white);
      padding: 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(255, 184, 0, 0.25);
    }

    .metric-item {
      text-align: center;
      border-right: 1px solid #F1F5F9;
    }

    .metric-item:last-child {
      border-right: none;
    }

    .metric-num {
      font-size: 28px;
      font-weight: 800;
      color: #D97706;
      margin-bottom: 4px;
    }

    .metric-label {
      font-size: 13px;
      color: var(--sub-text);
      font-weight: 500;
    }

    /* 平台介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .intro-card {
      background: var(--bg-white);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .intro-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--border-accent);
    }

    .intro-icon {
      width: 50px;
      height: 50px;
      background: var(--primary-light);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
      color: var(--accent-gold);
    }

    .intro-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 12px;
    }

    .intro-text {
      font-size: 14px;
      color: var(--sub-text);
      line-height: 1.6;
    }

    /* 场景矩阵 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .scene-card {
      background: var(--bg-white);
      border: 1px solid #F1F5F9;
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.25s ease;
      position: relative;
      overflow: hidden;
    }

    .scene-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 0;
      background: var(--primary-yellow);
      transition: height 0.25s ease;
    }

    .scene-card:hover {
      border-color: var(--border-accent);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    .scene-card:hover::before {
      height: 100%;
    }

    .scene-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
    }

    .scene-name {
      font-size: 17px;
      font-weight: 700;
      color: var(--dark-text);
    }

    .scene-badge {
      font-size: 11px;
      background: #FEF3C7;
      color: #92400E;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    .scene-desc {
      font-size: 13.5px;
      color: var(--sub-text);
      line-height: 1.6;
    }

    /* 模型支持跑马标签云 */
    .model-box {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid rgba(255, 184, 0, 0.25);
      box-shadow: var(--shadow-sm);
      text-align: center;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-top: 24px;
    }

    .model-tag {
      background: #FFFBEB;
      border: 1px solid #FDE68A;
      color: #78350F;
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 600;
      transition: all 0.2s;
    }

    .model-tag:hover {
      background: var(--primary-yellow);
      color: #000000;
      transform: scale(1.05);
    }

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

    .flow-card {
      background: var(--bg-white);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .flow-num {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, #FFC727 0%, #FF9900 100%);
      color: #000000;
      border-radius: 50%;
      font-size: 18px;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }

    .flow-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--dark-text);
    }

    .flow-text {
      font-size: 13px;
      color: var(--sub-text);
      line-height: 1.5;
    }

    /* 对比评测 */
    .compare-wrap {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(255, 184, 0, 0.25);
    }

    .score-summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
      padding: 20px 30px;
      border-radius: var(--radius-md);
      margin-bottom: 30px;
      border: 1px solid #FDE68A;
    }

    .score-left h3 {
      font-size: 20px;
      font-weight: 800;
      color: #78350F;
      margin-bottom: 4px;
    }

    .score-left p {
      font-size: 14px;
      color: #92400E;
    }

    .score-right {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }

    .score-val {
      font-size: 38px;
      font-weight: 900;
      color: #D97706;
    }

    .score-max {
      font-size: 18px;
      color: #92400E;
      font-weight: 700;
    }

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #F1F5F9;
      font-size: 14px;
    }

    .compare-table th {
      background: #F8FAFC;
      color: var(--dark-text);
      font-weight: 700;
    }

    .compare-table tr:hover td {
      background: #FFFDF7;
    }

    .highlight-col {
      background: rgba(255, 248, 231, 0.5);
      font-weight: 700;
      color: #B45309;
    }

    /* 案例展示 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .case-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-sm);
    }

    .case-img-box {
      width: 100%;
      aspect-ratio: 16/9;
      overflow: hidden;
      background: #E2E8F0;
    }

    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-img-box img {
      transform: scale(1.04);
    }

    .case-body {
      padding: 24px;
    }

    .case-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--dark-text);
    }

    .case-desc {
      font-size: 14px;
      color: var(--sub-text);
      line-height: 1.6;
    }

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

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

    .review-text {
      font-size: 14px;
      color: var(--sub-text);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    .user-avatar {
      width: 42px;
      height: 42px;
      background: var(--primary-light);
      border: 1px solid var(--border-accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--accent-gold);
      font-size: 14px;
    }

    .user-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--dark-text);
    }

    .user-info p {
      font-size: 12px;
      color: var(--light-text);
    }

    /* FAQ */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s;
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--dark-text);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
    }

    .faq-question:hover {
      color: #D97706;
    }

    .faq-icon {
      font-size: 20px;
      transition: transform 0.25s ease;
      color: var(--accent-gold);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      padding: 0 24px;
      color: var(--sub-text);
      font-size: 14.5px;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-bottom: 20px;
    }

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

    /* 需求匹配表单与加盟 */
    .form-wrapper {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(255, 184, 0, 0.25);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .form-info {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .form-info h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--dark-text);
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
      font-size: 14.5px;
      color: var(--sub-text);
    }

    .contact-icon {
      width: 36px;
      height: 36px;
      background: var(--primary-light);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-gold);
      font-weight: bold;
    }

    .qr-box {
      margin-top: 20px;
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .qr-box img {
      width: 110px;
      height: 110px;
      border: 1px solid #E2E8F0;
      border-radius: var(--radius-sm);
      padding: 4px;
      background: #FFFFFF;
    }

    .form-box {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

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

    .form-group label {
      font-size: 13.5px;
      font-weight: 600;
      color: var(--dark-text);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: border 0.2s;
      font-family: inherit;
    }

    .form-control:focus {
      border-color: var(--primary-yellow);
      box-shadow: 0 0 0 3px rgba(255, 184, 0, 0.15);
    }

    /* 文章列表与资讯 */
    .article-wrap {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-sm);
    }

    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .article-card {
      padding: 16px;
      border-radius: var(--radius-sm);
      background: #F8FAFC;
      border: 1px solid #F1F5F9;
      transition: all 0.2s;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-card:hover {
      background: #FFFDF7;
      border-color: var(--border-accent);
      transform: translateY(-2px);
    }

    .article-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .article-meta {
      font-size: 12px;
      color: var(--light-text);
    }

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

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, #FFC727 0%, #FF9900 100%);
      color: #000000;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
      cursor: pointer;
      border: none;
      font-size: 20px;
      transition: transform 0.2s;
    }

    .float-btn:hover {
      transform: scale(1.1);
    }

    /* 底部 FOOTER */
    .footer {
      background: #0F172A;
      color: #E2E8F0;
      padding: 60px 0 24px;
      border-top: 4px solid var(--primary-yellow);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 13.5px;
      color: #94A3B8;
      line-height: 1.7;
    }

    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-col h5::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background: var(--primary-yellow);
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      font-size: 13.5px;
      color: #94A3B8;
    }

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

    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #64748B;
    }

    .friend-links {
      margin-bottom: 16px;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
    }

    .friend-links a {
      color: #94A3B8;
      font-size: 12.5px;
    }

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

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .intro-grid, .scene-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-wrapper {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .section-padding {
        padding: 50px 0;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .metric-item:nth-child(2) {
        border-right: none;
      }
      .intro-grid, .scene-grid, .case-grid, .reviews-grid, .article-grid {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 2px solid var(--primary-yellow);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .compare-table {
        display: block;
        overflow-x: auto;
      }
    }