/* 全局重置与桃红艳丽企业风变量 */
    :root {
      --primary: #E11D48;          /* 桃红主色 */
      --primary-hover: #BE123C;    /* 深桃红 */
      --primary-light: #FFF1F2;    /* 极浅桃红底 */
      --primary-soft: #FFE4E6;     /* 柔和粉红边框 */
      --accent-rose: #FB7185;      /* 明艳玫粉 */
      --accent-gradient: linear-gradient(135deg, #FF2E93 0%, #E11D48 100%);
      --hero-gradient: linear-gradient(180deg, #FFF1F4 0%, #FAF9FB 100%);
      --bg-page: #FAF9FB;          /* 浅暖米白底色 */
      --bg-card: #FFFFFF;          /* 卡片纯白 */
      --text-main: #0F172A;        /* 主标题深墨黑 */
      --text-body: #334155;        /* 正文清晰深灰 */
      --text-muted: #64748B;       /* 辅助文本 */
      --border-color: #F1E5E9;     /* 浅色边框 */
      --shadow-sm: 0 2px 8px rgba(225, 29, 72, 0.04);
      --shadow-md: 0 8px 24px rgba(225, 29, 72, 0.08);
      --shadow-lg: 0 16px 36px rgba(225, 29, 72, 0.12);
      --container-width: 1200px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.28s ease-in-out;
    }

    * {
      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-page);
      color: var(--text-body);
      line-height: 1.68;
      overflow-x: hidden;
    }

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

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

    /* 容器规范：全页统一度量 */
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--primary-soft);
      box-shadow: 0 2px 12px rgba(225, 29, 72, 0.03);
    }

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

    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .brand-badge {
      font-size: 11px;
      font-weight: 600;
      background: var(--primary-light);
      color: var(--primary);
      border: 1px solid var(--primary-soft);
      padding: 2px 8px;
      border-radius: 20px;
    }

    /* 强制要求：.nav-links 的 gap 属性设置为 0 */
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 14.5px;
      font-weight: 500;
      color: var(--text-body);
      border-radius: 6px;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--accent-gradient);
      color: #FFFFFF !important;
      font-size: 14px;
      font-weight: 600;
      padding: 9px 20px;
      border-radius: 30px;
      box-shadow: 0 4px 14px rgba(225, 29, 72, 0.35);
      border: none;
      cursor: pointer;
    }

    .btn-portal:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(225, 29, 72, 0.45);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: 8px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 首屏 HERO：完全无图片设计，桃红渐变科技质感 */
    .hero-section {
      background: var(--hero-gradient);
      padding: 80px 0 70px;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-glow-1 {
      position: absolute;
      top: -80px;
      left: 50%;
      transform: translateX(-50%);
      width: 600px;
      height: 350px;
      background: radial-gradient(circle, rgba(255, 46, 147, 0.18) 0%, rgba(255, 241, 244, 0) 70%);
      pointer-events: none;
      filter: blur(40px);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #FFFFFF;
      border: 1px solid var(--primary-soft);
      box-shadow: var(--shadow-sm);
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 13.5px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 24px;
    }

    .hero-badge span {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      display: inline-block;
      animation: pulseDot 2s infinite;
    }

    @keyframes pulseDot {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.3); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }

    /* H1 字数严格控制在 20 字以内 */
    .hero-title {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-title .highlight {
      color: var(--primary);
      position: relative;
      display: inline-block;
    }

    .hero-desc {
      font-size: 17.5px;
      color: var(--text-body);
      max-width: 760px;
      margin: 0 auto 34px;
      line-height: 1.7;
    }

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

    /* 首屏醒目访问官网按钮 */
    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--accent-gradient);
      color: #FFFFFF !important;
      font-size: 16.5px;
      font-weight: 700;
      padding: 14px 36px;
      border-radius: 40px;
      box-shadow: 0 8px 24px rgba(225, 29, 72, 0.4);
      transition: var(--transition);
    }

    .btn-hero-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(225, 29, 72, 0.55);
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: #FFFFFF;
      color: var(--text-main);
      font-size: 16px;
      font-weight: 600;
      padding: 14px 30px;
      border-radius: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .btn-hero-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 10px;
    }

    .stat-card {
      background: #FFFFFF;
      border: 1px solid var(--primary-soft);
      padding: 22px 18px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
    }

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

    .stat-number {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 13.5px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 模块通用标题架构 */
    .section-padding {
      padding: 76px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-subtitle {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: var(--primary);
      margin-bottom: 10px;
      display: block;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 通用卡片与网格 */
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

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

    .card-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-light);
      border: 1px solid var(--primary-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      color: var(--primary);
      font-size: 22px;
      font-weight: bold;
    }

    .feature-card h3 {
      font-size: 18.5px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .feature-card p {
      font-size: 14.5px;
      color: var(--text-body);
      line-height: 1.6;
      flex-grow: 1;
    }

    .feature-card .card-tag {
      margin-top: 14px;
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      padding: 3px 10px;
      border-radius: 20px;
      width: fit-content;
    }

    /* 平台介绍 / 关于我们 */
    .platform-intro-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--primary-soft);
      box-shadow: var(--shadow-sm);
      padding: 40px;
      margin-bottom: 30px;
    }

    .intro-pillars {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 32px;
    }

    .pillar-item {
      background: var(--primary-light);
      padding: 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--primary-soft);
    }

    .pillar-item h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary-hover);
      margin-bottom: 8px;
    }

    .pillar-item p {
      font-size: 14px;
      color: var(--text-body);
    }

    /* 模型生态与 Token 比价 */
    .model-tags-container {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      margin-bottom: 32px;
    }

    .model-tags-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .tags-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
    }

    .model-pill {
      font-size: 13px;
      font-weight: 500;
      background: #F8FAFC;
      border: 1px solid #E2E8F0;
      color: var(--text-body);
      padding: 5px 13px;
      border-radius: 20px;
      transition: var(--transition);
    }

    .model-pill:hover {
      background: var(--primary-light);
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 表格响应式 */
    .table-wrapper {
      width: 100%;
      overflow-x: auto;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .styled-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .styled-table th {
      background: #FFF5F7;
      color: var(--primary-hover);
      font-size: 14.5px;
      font-weight: 700;
      padding: 16px 20px;
      border-bottom: 2px solid var(--primary-soft);
    }

    .styled-table td {
      padding: 15px 20px;
      font-size: 14px;
      color: var(--text-body);
      border-bottom: 1px solid #F1F5F9;
    }

    .styled-table tr:hover td {
      background: #FFF9FA;
    }

    .badge-discount {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      background: #FFE4E6;
      color: #E11D48;
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 评测与对比核心要求 */
    .rating-header-card {
      background: linear-gradient(135deg, #FFF1F4 0%, #FFFFFF 100%);
      border: 1px solid var(--primary-soft);
      border-radius: var(--radius-lg);
      padding: 34px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      box-shadow: var(--shadow-sm);
    }

    .rating-score-box {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .big-score {
      font-size: 52px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .rating-meta h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .rating-stars {
      color: #F59E0B;
      font-size: 18px;
      letter-spacing: 2px;
    }

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

    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      position: relative;
    }

    .step-num {
      position: absolute;
      top: -14px;
      left: 20px;
      width: 32px;
      height: 32px;
      background: var(--accent-gradient);
      color: #FFFFFF;
      font-size: 14px;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 10px rgba(225, 29, 72, 0.3);
    }

    .step-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-top: 10px;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 案例图片画廊 */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .gallery-item {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .gallery-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent-rose);
    }

    .gallery-img-box {
      width: 100%;
      overflow: hidden;
      background: #F1F5F9;
      position: relative;
    }

    .gallery-img-box.aspect-landscape {
      aspect-ratio: 16 / 9;
    }

    .gallery-img-box.aspect-square {
      aspect-ratio: 1 / 1;
    }

    .gallery-img-box.aspect-banner {
      aspect-ratio: 4 / 3;
    }

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

    .gallery-item:hover img {
      transform: scale(1.04);
    }

    .gallery-info {
      padding: 18px 20px;
      flex-grow: 1;
    }

    .gallery-info h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .gallery-info p {
      font-size: 13.5px;
      color: var(--text-muted);
    }

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

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

    .testimonial-card:hover {
      border-color: var(--primary-soft);
      box-shadow: var(--shadow-md);
    }

    .testimonial-quote {
      font-size: 14.5px;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 20px;
      position: relative;
    }

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

    .user-avatar-initial {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 16px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--primary-soft);
    }

    .user-meta h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-meta span {
      font-size: 12.5px;
      color: var(--text-muted);
    }

    /* FAQ 折叠手风琴 */
    .faq-list {
      max-width: 880px;
      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;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--accent-rose);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      background: none;
      border: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      text-align: left;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      font-weight: 700;
      flex-shrink: 0;
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #FFFFFF;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #FAFAFC;
    }

    .faq-answer-inner {
      padding: 0 22px 20px;
      font-size: 14.5px;
      color: var(--text-body);
      line-height: 1.68;
    }

    /* 行业资讯 & 最新文章 */
    .news-wrapper {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 34px;
    }

    .news-links-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .news-card-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 18px;
      background: #FAF9FB;
      border: 1px solid #F1E5E9;
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-body);
      font-weight: 500;
    }

    .news-card-link:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #FFF1F2;
    }

    /* 表单与联系区 */
    .contact-form-layout {
      display: grid;
      grid-template-columns: 1fr 1.15fr;
      gap: 36px;
      background: #FFFFFF;
      border: 1px solid var(--primary-soft);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

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

    .contact-meta-group h3 {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .contact-details-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin: 22px 0;
    }

    .contact-details-list li {
      font-size: 15px;
      color: var(--text-body);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .contact-details-list strong {
      color: var(--text-main);
      min-width: 90px;
    }

    .qrcode-box {
      margin-top: 10px;
      padding: 16px;
      background: var(--primary-light);
      border-radius: var(--radius-md);
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      width: fit-content;
      border: 1px solid var(--primary-soft);
    }

    .qrcode-box img {
      width: 130px;
      height: 130px;
      border-radius: 6px;
      object-fit: cover;
    }

    .qrcode-box p {
      font-size: 12.5px;
      font-weight: 600;
      color: var(--primary-hover);
    }

    .form-side {
      background: #FAF9FB;
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid #F1E5E9;
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid #CBD5E1;
      border-radius: var(--radius-sm);
      background: #FFFFFF;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.15);
    }

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

    .btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 16px;
      font-weight: 700;
      background: var(--accent-gradient);
      color: #FFFFFF;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(225, 29, 72, 0.3);
      transition: var(--transition);
    }

    .btn-submit:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(225, 29, 72, 0.45);
    }

    /* 友情链接与页脚规范 */
    .friend-links-bar {
      padding: 24px 0;
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .friend-links-inner {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
    }

    .friend-links-label {
      font-size: 13.5px;
      font-weight: 700;
      color: var(--text-main);
      flex-shrink: 0;
    }

    .friend-links-list {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links-list a {
      font-size: 13.5px;
      color: var(--text-muted);
      padding: 3px 10px;
      background: #F8FAFC;
      border-radius: 4px;
      border: 1px solid #E2E8F0;
    }

    .friend-links-list a:hover {
      color: var(--primary);
      border-color: var(--primary-soft);
      background: var(--primary-light);
    }

    .site-footer {
      background: #18090E;
      color: #FBCFE8;
      padding: 40px 0 30px;
      border-top: 2px solid var(--primary);
    }

    .footer-content {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .footer-brand h4 {
      font-size: 18px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 6px;
    }

    .footer-brand p {
      font-size: 13px;
      color: #94A3B8;
    }

    .footer-nav {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    .footer-nav a {
      font-size: 13.5px;
      color: #E2E8F0;
    }

    .footer-nav a:hover {
      color: var(--accent-rose);
    }

    .footer-bottom {
      margin-top: 24px;
      padding-top: 18px;
      border-top: 1px solid #2D141D;
      text-align: center;
      font-size: 12.5px;
      color: #94A3B8;
    }

    /* 悬浮客服与返回顶部组件 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #FFFFFF;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      border: 1px solid var(--primary-soft);
      cursor: pointer;
      font-size: 13px;
      font-weight: 700;
      transition: var(--transition);
    }

    .float-btn:hover {
      background: var(--primary);
      color: #FFFFFF;
      transform: scale(1.06);
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .hero-title {
        font-size: 34px;
      }
      .grid-4, .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .testimonials-grid, .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-pillars {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 18px 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.06);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        width: 100%;
        border-radius: 0;
      }
      .hero-title {
        font-size: 27px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .hero-stats-grid,
      .grid-2,
      .grid-3,
      .grid-4,
      .step-grid,
      .gallery-grid,
      .testimonials-grid,
      .contact-form-layout,
      .news-links-grid {
        grid-template-columns: 1fr;
      }
      .rating-header-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
      .footer-content {
        flex-direction: column;
        align-items: flex-start;
      }
    }