:root {
      --primary: #ff2d55;
      --primary-hover: #e02447;
      --secondary: #4a00e0;
      --accent-cyan: #00f2fe;
      --accent-yellow: #ffe600;
      --accent-orange: #ff7700;
      --text-main: #1e1e2f;
      --text-sub: #505068;
      --text-light: #7c7c9a;
      --bg-page: #f9f9fe;
      --bg-card: #ffffff;
      --bg-card-alt: #f0f3fa;
      --border-color: #e5e9f2;
      --container-max: 1200px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 12px rgba(255, 45, 85, 0.08);
      --shadow-md: 0 8px 24px rgba(74, 0, 224, 0.1);
      --shadow-lg: 0 16px 36px rgba(255, 45, 85, 0.15);
      --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;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: radial-gradient(#4a00e0 0.5px, transparent 0.5px), radial-gradient(#ff2d55 0.5px, var(--bg-page) 0.5px);
      background-size: 30px 30px;
      background-position: 0 0, 15px 15px;
      background-attachment: fixed;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }
    .section-padding {
      padding: 60px 0;
    }
    .section-header {
      text-align: center;
      margin-bottom: 40px;
    }
    .badge-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(90deg, var(--primary), var(--accent-orange));
      border-radius: 50px;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 12px;
      box-shadow: var(--shadow-sm);
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-sub);
      max-width: 700px;
      margin: 0 auto;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, var(--primary) 0%, #ff5252 100%);
      border-radius: 50px;
      box-shadow: 0 8px 20px rgba(255, 45, 85, 0.35);
      transition: var(--transition);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 26px rgba(255, 45, 85, 0.45);
      background: linear-gradient(135deg, #e02447 0%, #f03e3e 100%);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: 50px;
      transition: var(--transition);
      cursor: pointer;
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #fff;
    }

    /* 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 rgba(255, 45, 85, 0.15);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    }
    .navbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .logo-container {
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .brand-text {
      font-size: 1.35rem;
      font-weight: 900;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      -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 {
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      display: block;
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(255, 45, 85, 0.06);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
    }

    /* Hero 首屏 (无图片) */
    .hero-section {
      padding: 80px 0 60px;
      background: linear-gradient(135deg, rgba(255, 240, 245, 0.8) 0%, rgba(240, 243, 255, 0.8) 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }
    .hero-wrapper {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.5rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .hero-content h1 span {
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-sub);
      margin-bottom: 30px;
      line-height: 1.7;
    }
    .hero-btns {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-features-strip {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .hero-feature-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .hero-feature-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--primary);
    }

    /* Hero 右侧动态面板 */
    .hero-dynamic-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-lg);
      border: 2px solid rgba(74, 0, 224, 0.1);
      position: relative;
    }
    .dynamic-badge {
      position: absolute;
      top: -14px;
      right: 20px;
      background: var(--secondary);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 20px;
    }
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 20px;
    }
    .metric-box {
      background: var(--bg-card-alt);
      padding: 16px;
      border-radius: var(--radius-md);
      text-align: center;
      border: 1px solid var(--border-color);
    }
    .metric-value {
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--primary);
    }
    .metric-label {
      font-size: 0.85rem;
      color: var(--text-sub);
      font-weight: 600;
    }
    .model-tags-preview {
      background: linear-gradient(135deg, rgba(255, 45, 85, 0.05), rgba(74, 0, 224, 0.05));
      border-radius: var(--radius-md);
      padding: 16px;
      font-size: 0.85rem;
      line-height: 1.8;
      border: 1px dashed var(--primary);
    }
    .model-tag {
      display: inline-block;
      background: #fff;
      color: var(--text-main);
      padding: 2px 8px;
      border-radius: 4px;
      margin: 2px 4px 2px 0;
      font-weight: 600;
      border: 1px solid var(--border-color);
    }

    /* 平台核心模型跑马灯 */
    .model-marquee-section {
      background: #ffffff;
      padding: 24px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .model-badge-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .pill-badge {
      background: var(--bg-card-alt);
      color: var(--text-main);
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 700;
      transition: var(--transition);
    }
    .pill-badge:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #fff;
      transform: translateY(-2px);
    }

    /* 通用卡片网格 */
    .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: 24px;
    }
    .feature-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), var(--accent-orange));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 900;
      margin-bottom: 16px;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .feature-card p {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 流程步骤 */
    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #fff;
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      position: relative;
      text-align: center;
    }
    .step-number {
      width: 40px;
      height: 40px;
      line-height: 40px;
      background: var(--secondary);
      color: #fff;
      font-weight: 900;
      border-radius: 50%;
      margin: 0 auto 16px;
    }
    .step-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    /* 评测与对比表格 */
    .review-score-banner {
      background: linear-gradient(135deg, var(--secondary) 0%, #1e1e2f 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      box-shadow: var(--shadow-md);
    }
    .review-left h3 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 8px;
      color: var(--accent-yellow);
    }
    .review-left p {
      color: rgba(255, 255, 255, 0.85);
      font-size: 1rem;
    }
    .review-right {
      text-align: right;
    }
    .score-badge-huge {
      font-size: 3rem;
      font-weight: 900;
      color: var(--accent-cyan);
      line-height: 1;
    }
    .score-stars {
      color: var(--accent-yellow);
      font-size: 1.4rem;
      margin-top: 6px;
    }
    .comparison-table-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }
    .comparison-table th {
      background: var(--bg-card-alt);
      font-weight: 800;
      color: var(--text-main);
    }
    .comparison-table tr:last-child td {
      border-bottom: none;
    }
    .highlight-col {
      background: rgba(255, 45, 85, 0.04);
      font-weight: 700;
      color: var(--primary);
    }

    /* 案例展示 */
    .showcase-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 24px;
      align-items: center;
    }
    .media-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .media-card .img-wrap {
      width: 100%;
      aspect-ratio: 16/9;
      background: #f0f0f0;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .media-card .img-wrap.square-ratio {
      aspect-ratio: 1/1;
    }
    .media-card .card-body {
      padding: 20px;
    }
    .media-card h4 {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .media-card p {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    /* 用户评论 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .testimonial-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: italic;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }
    .user-avatar-char {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
    }
    .user-info h5 {
      font-size: 0.95rem;
      font-weight: 800;
    }
    .user-info span {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question:hover {
      background: rgba(255, 45, 85, 0.03);
      color: var(--primary);
    }
    .faq-icon {
      font-size: 1.2rem;
      transition: var(--transition);
      font-weight: 900;
      color: var(--primary);
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.6;
      display: none;
      border-top: 1px solid var(--border-color);
    }
    .faq-item.active .faq-answer {
      display: block;
      padding-top: 16px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 行业资讯与短代码文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
    }
    .dynamic-article-box {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .article-links-box {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .article-links-box h4 {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--secondary);
    }
    .article-url-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .article-url-list a {
      font-size: 0.9rem;
      color: var(--text-sub);
      text-decoration: none;
      transition: var(--transition);
      display: block;
      word-break: break-all;
    }
    .article-url-list a:hover {
      color: var(--primary);
      text-decoration: underline;
    }

    /* 表单与联系模块 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .contact-info-panel h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .contact-details {
      list-style: none;
      margin-bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .contact-details li {
      font-size: 0.95rem;
      color: var(--text-sub);
    }
    .contact-details strong {
      color: var(--text-main);
    }
    .qr-group {
      display: flex;
      align-items: center;
      gap: 20px;
      background: var(--bg-card-alt);
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .qr-box {
      width: 100px;
      height: 100px;
      background: #fff;
      padding: 6px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .qr-desc h5 {
      font-size: 1rem;
      font-weight: 800;
      margin-bottom: 4px;
    }
    .qr-desc p {
      font-size: 0.85rem;
      color: var(--text-sub);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      background: var(--bg-page);
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary);
      background: #fff;
      box-shadow: 0 0 0 3px rgba(255, 45, 85, 0.15);
    }
    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }

    /* 宣传横幅图区 */
    .banner-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 30px;
    }
    .banner-gallery .img-card {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #11111e;
      color: #c0c0d8;
      padding: 60px 0 30px;
      border-top: 4px solid var(--primary);
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .footer-col p {
      font-size: 0.9rem;
      line-height: 1.6;
      color: #9b9bb5;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a {
      color: #c0c0d8;
      font-size: 0.9rem;
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .friend-links-wrap {
      border-top: 1px solid #232338;
      padding: 20px 0;
      margin-bottom: 20px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
    }
    .friend-links-title {
      font-weight: 800;
      color: #ffffff;
      font-size: 0.9rem;
    }
    .friend-links-wrap a {
      color: #9b9bb5;
      font-size: 0.85rem;
      transition: var(--transition);
    }
    .friend-links-wrap a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid #232338;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #6e6e88;
    }

    /* 浮动工具栏 */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #fff;
      color: var(--text-main);
      box-shadow: var(--shadow-md);
      border: 2px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-weight: 900;
      transition: var(--transition);
      position: relative;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }
    .float-qr-pop {
      display: none;
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #fff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      width: 140px;
      text-align: center;
    }
    .float-btn:hover .float-qr-pop {
      display: block;
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-wrapper {
        grid-template-columns: 1fr;
      }
      .grid-4, .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .showcase-grid, .contact-wrapper, .articles-grid {
        grid-template-columns: 1fr;
      }
      .testimonial-grid {
        grid-template-columns: 1fr;
      }
      .banner-gallery {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 2px solid var(--primary);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .steps-container {
        grid-template-columns: 1fr;
      }
      .review-score-banner {
        flex-direction: column;
        text-align: center;
        gap: 20px;
      }
      .review-right {
        text-align: center;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.8rem;
      }
    }