:root {
      --bg-base: #f5f8fc;
      --bg-card: #ffffff;
      --bg-subtle: #edf3fa;
      --text-main: #141c2b;
      --text-muted: #526077;
      --text-soft: #7a889b;
      --brand-cyan: #00d2ff;
      --brand-magenta: #ff007a;
      --brand-violet: #7928ca;
      --neon-gradient: linear-gradient(135deg, #00d2ff 0%, #7928ca 50%, #ff007a 100%);
      --neon-glow: 0 10px 28px rgba(0, 210, 255, 0.22), 0 4px 12px rgba(255, 0, 122, 0.15);
      --border-color: rgba(121, 40, 202, 0.14);
      --border-hover: rgba(0, 210, 255, 0.45);
      --container-width: 1200px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(0, 210, 255, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 70%, rgba(255, 0, 122, 0.04) 0%, transparent 45%),
        linear-gradient(to bottom, #ffffff 0%, var(--bg-base) 100%);
      background-attachment: fixed;
    }

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

    .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(--border-color);
      box-shadow: 0 4px 20px rgba(20, 28, 43, 0.04);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
      gap: 16px;
    }

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

    .logo-container {
      width: 150px;
      display: flex;
      align-items: center;
    }

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

    .nav-links li a {
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 14px;
      display: inline-block;
      font-size: 0.95rem;
      border-radius: var(--radius-sm);
      transition: all var(--transition-fast);
    }

    .nav-links li a:hover {
      color: var(--brand-magenta);
      background: rgba(255, 0, 122, 0.06);
    }

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

    .btn-gradient {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--neon-gradient);
      color: #ffffff !important;
      padding: 10px 22px;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: 30px;
      box-shadow: 0 4px 16px rgba(121, 40, 202, 0.28);
      transition: transform var(--transition-fast), box-shadow var(--transition-fast);
      border: none;
      cursor: pointer;
    }

    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: var(--neon-glow);
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #ffffff;
      color: var(--brand-violet) !important;
      padding: 9px 20px;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: 30px;
      border: 1px solid rgba(121, 40, 202, 0.25);
      transition: all var(--transition-fast);
    }

    .btn-secondary:hover {
      border-color: var(--brand-cyan);
      background: rgba(0, 210, 255, 0.05);
      color: var(--brand-cyan) !important;
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      color: var(--text-main);
      font-size: 1.25rem;
    }

    /* 模块通用标题 */
    .section-wrap {
      padding-top: 80px;
      padding-bottom: 80px;
      position: relative;
    }

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

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 14px;
      border-radius: 20px;
      background: rgba(0, 210, 255, 0.1);
      color: #007bb0;
      border: 1px solid rgba(0, 210, 255, 0.3);
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.35;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 90px 0 80px 0;
      position: relative;
      background: radial-gradient(circle at 50% 10%, rgba(0, 210, 255, 0.12) 0%, rgba(255, 0, 122, 0.04) 40%, transparent 80%);
      border-bottom: 1px solid rgba(121, 40, 202, 0.08);
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid rgba(121, 40, 202, 0.2);
      box-shadow: 0 4px 14px rgba(121, 40, 202, 0.08);
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--brand-violet);
      margin-bottom: 24px;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--brand-magenta);
      box-shadow: 0 0 8px var(--brand-magenta);
      display: inline-block;
    }

    .hero-title {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }

    .hero-title .neon-text {
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px auto;
      line-height: 1.8;
    }

    .hero-action-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }

    .hero-btn-main {
      padding: 14px 34px;
      font-size: 1.05rem;
    }

    .hero-model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
      max-width: 860px;
      margin: 0 auto;
      padding: 20px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(121, 40, 202, 0.12);
      box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
    }

    .model-chip {
      font-size: 0.8rem;
      font-weight: 600;
      padding: 4px 10px;
      background: var(--bg-subtle);
      border-radius: 6px;
      color: var(--text-muted);
      border: 1px solid rgba(20, 28, 43, 0.06);
      transition: all var(--transition-fast);
    }

    .model-chip:hover {
      border-color: var(--brand-cyan);
      color: var(--brand-violet);
      background: rgba(0, 210, 255, 0.08);
      transform: translateY(-1px);
    }

    /* 指标卡片 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: -30px;
      position: relative;
      z-index: 10;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      text-align: center;
      box-shadow: 0 8px 24px rgba(121, 40, 202, 0.06);
      transition: transform var(--transition-fast), border-color var(--transition-fast);
    }

    .metric-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-hover);
      box-shadow: 0 12px 30px rgba(0, 210, 255, 0.15);
    }

    .metric-val {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--brand-violet);
      margin-bottom: 6px;
      line-height: 1.2;
    }

    .metric-label {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .metric-sub {
      font-size: 0.85rem;
      color: var(--text-soft);
    }

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

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    /* 平台介绍 */
    .intro-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    }

    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }

    .intro-item {
      padding: 24px;
      background: var(--bg-subtle);
      border-radius: var(--radius-md);
      border: 1px solid rgba(121, 40, 202, 0.08);
      transition: all var(--transition-fast);
    }

    .intro-item:hover {
      background: #ffffff;
      border-color: var(--border-hover);
      box-shadow: 0 8px 24px rgba(0, 210, 255, 0.12);
      transform: translateY(-3px);
    }

    .intro-item h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .intro-item p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 场景卡片 */
    .scene-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all var(--transition-fast);
      position: relative;
      overflow: hidden;
    }

    .scene-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--neon-gradient);
      opacity: 0;
      transition: opacity var(--transition-fast);
    }

    .scene-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-hover);
      box-shadow: 0 12px 30px rgba(0, 210, 255, 0.12);
    }

    .scene-card:hover::before {
      opacity: 1;
    }

    .scene-icon-wrap {
      width: 46px;
      height: 46px;
      border-radius: 10px;
      background: rgba(0, 210, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-violet);
      font-weight: bold;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }

    .scene-card h3 {
      font-size: 1.1rem;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .scene-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .scene-tag {
      font-size: 0.75rem;
      color: var(--brand-magenta);
      background: rgba(255, 0, 122, 0.08);
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
      width: fit-content;
    }

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

    .flow-step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      position: relative;
      transition: all var(--transition-fast);
    }

    .flow-step-card:hover {
      border-color: var(--brand-cyan);
      box-shadow: 0 10px 24px rgba(0, 210, 255, 0.15);
      transform: translateY(-3px);
    }

    .step-badge {
      width: 42px;
      height: 42px;
      line-height: 42px;
      margin: 0 auto 16px auto;
      border-radius: 50%;
      background: var(--neon-gradient);
      color: #ffffff;
      font-weight: 800;
      font-size: 1.1rem;
      box-shadow: 0 4px 12px rgba(121, 40, 202, 0.3);
    }

    .flow-step-card h3 {
      font-size: 1.08rem;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .flow-step-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 案例中心展示 */
    .case-banner-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .case-img-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #ffffff;
      box-shadow: 0 6px 20px rgba(0,0,0,0.04);
      transition: all var(--transition-fast);
    }

    .case-img-box:hover {
      box-shadow: var(--neon-glow);
      transform: translateY(-3px);
    }

    .case-img-box img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform var(--transition-fast);
    }

    .case-img-box:hover img {
      transform: scale(1.02);
    }

    .case-info {
      padding: 16px 20px;
    }

    .case-info h4 {
      font-size: 1.05rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .case-info p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    .promo-gallery {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .promo-item {
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #ffffff;
    }

    .promo-item img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 对比评测板块 */
    .eval-highlight {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px solid var(--brand-violet);
      padding: 36px;
      box-shadow: var(--neon-glow);
      margin-bottom: 30px;
    }

    .eval-top-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      border-bottom: 1px solid rgba(121, 40, 202, 0.12);
      padding-bottom: 24px;
      margin-bottom: 24px;
    }

    .eval-score-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .eval-stars {
      color: #ffb800;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .eval-num {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--brand-magenta);
      line-height: 1;
    }

    .eval-denom {
      font-size: 1.1rem;
      color: var(--text-soft);
      font-weight: 600;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(20, 28, 43, 0.06);
    }

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

    .compare-table tr:hover td {
      background: rgba(0, 210, 255, 0.03);
    }

    .compare-table td:nth-child(2) {
      font-weight: 600;
      color: var(--brand-violet);
      background: rgba(121, 40, 202, 0.02);
    }

    .badge-win {
      display: inline-block;
      padding: 3px 8px;
      background: rgba(0, 210, 255, 0.12);
      color: #007bb0;
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: 600;
      margin-left: 6px;
    }

    /* 客户评论板块 */
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: 0 6px 18px rgba(0,0,0,0.03);
      transition: all var(--transition-fast);
    }

    .review-card:hover {
      transform: translateY(-3px);
      border-color: var(--border-hover);
      box-shadow: 0 10px 24px rgba(0, 210, 255, 0.12);
    }

    .review-quote {
      font-size: 0.94rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }

    .review-user-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(20, 28, 43, 0.06);
      padding-top: 14px;
    }

    .review-avatar-char {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--neon-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .review-user-meta h4 {
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .review-user-meta p {
      font-size: 0.82rem;
      color: var(--text-soft);
    }

    /* 需求匹配与表单 */
    .form-section-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 44px;
      box-shadow: 0 12px 32px rgba(121, 40, 202, 0.06);
    }

    .form-sidebar h3 {
      font-size: 1.5rem;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .form-sidebar p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .contact-spec-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .contact-spec-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.92rem;
      color: var(--text-main);
    }

    .spec-icon-badge {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: rgba(0, 210, 255, 0.12);
      color: var(--brand-violet);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }

    .styled-form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

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

    .form-group label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid rgba(20, 28, 43, 0.14);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--text-main);
      background: var(--bg-subtle);
      transition: all var(--transition-fast);
      outline: none;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--brand-violet);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(121, 40, 202, 0.12);
    }

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

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color var(--transition-fast);
    }

    .faq-card:hover {
      border-color: var(--border-hover);
    }

    .faq-header {
      width: 100%;
      padding: 18px 22px;
      background: none;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      text-align: left;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      transition: color var(--transition-fast);
    }

    .faq-header:hover {
      color: var(--brand-violet);
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--brand-magenta);
      transition: transform var(--transition-fast);
    }

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

    .faq-body {
      padding: 0 22px 18px 22px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
      border-top: 1px dashed rgba(20, 28, 43, 0.08);
      padding-top: 14px;
    }

    .faq-card.active .faq-body {
      display: block;
    }

    /* 资讯与友情链接 */
    .article-section-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px;
      margin-bottom: 40px;
    }

    .article-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 20px;
    }

    .article-btn-link {
      display: inline-flex;
      align-items: center;
      padding: 8px 16px;
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-main);
      transition: all var(--transition-fast);
    }

    .article-btn-link:hover {
      border-color: var(--brand-cyan);
      color: var(--brand-violet);
      background: rgba(0, 210, 255, 0.08);
      transform: translateY(-2px);
    }

    /* 页脚 */
    .site-footer {
      background: #0f1420;
      color: #94a3b8;
      padding-top: 60px;
      padding-bottom: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      font-size: 1.25rem;
      color: #ffffff;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.7;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      font-size: 1rem;
      color: #ffffff;
      margin-bottom: 16px;
      font-weight: 600;
    }

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-list a {
      color: #94a3b8;
      font-size: 0.88rem;
      transition: color var(--transition-fast);
    }

    .footer-links-list a:hover {
      color: var(--brand-cyan);
    }

    .qr-container {
      width: 110px;
      padding: 6px;
      background: #ffffff;
      border-radius: var(--radius-sm);
      margin-top: 8px;
    }

    .qr-container img {
      width: 100%;
      height: auto;
      display: block;
    }

    .footer-friendly-box {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friendly-links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 10px;
    }

    .friendly-links-flex a {
      font-size: 0.85rem;
      color: #64748b;
      transition: color var(--transition-fast);
    }

    .friendly-links-flex a:hover {
      color: var(--brand-magenta);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动侧边客服 */
    .float-service-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;
      border: 1px solid var(--border-color);
      box-shadow: 0 6px 18px rgba(0,0,0,0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-violet);
      font-weight: 700;
      font-size: 0.85rem;
      cursor: pointer;
      transition: all var(--transition-fast);
      position: relative;
    }

    .float-btn:hover {
      background: var(--neon-gradient);
      color: #ffffff;
      transform: scale(1.08);
    }

    .float-qr-popover {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: 0 8px 24px rgba(0,0,0,0.15);
      border: 1px solid var(--border-color);
      width: 140px;
      text-align: center;
    }

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

    .float-qr-popover img {
      width: 100%;
      height: auto;
      display: block;
      margin-bottom: 6px;
    }

    .float-qr-popover span {
      font-size: 0.75rem;
      color: var(--text-main);
      font-weight: 600;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px 24px;
        box-shadow: 0 10px 24px rgba(0,0,0,0.08);
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .case-banner-grid {
        grid-template-columns: 1fr;
      }
      .promo-gallery {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-section-layout {
        grid-template-columns: 1fr;
        padding: 24px;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }