/* 鲜绿夺目风核心主题定义 */
    :root {
      --primary: #059669;
      --primary-hover: #047857;
      --primary-active: #065f46;
      --primary-light: #ecfdf5;
      --accent: #10b981;
      --accent-bright: #34d399;
      --lime-pop: #84cc16;
      --text-dark: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --bg-page: #f8fafc;
      --bg-surface: #ffffff;
      --bg-card: #ffffff;
      --border-subtle: #e2e8f0;
      --border-accent: #a7f3d0;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 14px -2px rgba(5, 150, 105, 0.08), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 12px 28px -4px rgba(5, 150, 105, 0.12), 0 4px 10px -2px rgba(0, 0, 0, 0.03);
      --container-max: 1200px;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --transition-fast: 0.2s ease;
      --transition-normal: 0.3s ease;
    }

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

    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: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    /* 统一样式主容器 */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(16, 185, 129, 0.15);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-dark);
      letter-spacing: -0.5px;
    }

    .brand-tag {
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 20px;
      border: 1px solid var(--border-accent);
      font-weight: 600;
    }

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

    .nav-item a {
      display: block;
      padding: 10px 14px;
      font-size: 0.925rem;
      font-weight: 500;
      color: var(--text-body);
      border-radius: var(--radius-sm);
      transition: background-color var(--transition-fast), color var(--transition-fast);
    }

    .nav-item a:hover {
      color: var(--primary);
      background-color: var(--primary-light);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      font-size: 0.95rem;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      border: 1px solid transparent;
      cursor: pointer;
      transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
      text-decoration: none;
      white-space: nowrap;
    }

    .btn:active {
      transform: scale(0.98);
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
      color: #ffffff;
      box-shadow: 0 6px 18px rgba(16, 185, 129, 0.45);
      transform: translateY(-1px);
    }

    .btn-outline {
      background: var(--bg-surface);
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary-light);
      color: var(--primary-hover);
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-dark);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 页面各 Section 统一规范 */
    .section {
      padding: 88px 0;
      position: relative;
    }

    .section-alt {
      background: linear-gradient(180deg, #f0fdf4 0%, #ffffff 100%);
      border-top: 1px solid rgba(16, 185, 129, 0.1);
      border-bottom: 1px solid rgba(16, 185, 129, 0.1);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 52px auto;
    }

    .section-badge {
      display: inline-block;
      font-size: 0.825rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      border: 1px solid var(--border-accent);
      padding: 4px 14px;
      border-radius: 30px;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-dark);
      letter-spacing: -0.5px;
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 首屏 HERO 区域：绝对禁止任何图片 */
    .hero-section {
      background: radial-gradient(circle at 50% 10%, #d1fae5 0%, #ecfdf5 45%, #f8fafc 85%);
      padding: 96px 0 80px 0;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(16, 185, 129, 0.15);
    }

    .hero-glow-1 {
      position: absolute;
      width: 480px;
      height: 480px;
      background: radial-gradient(circle, rgba(16, 185, 129, 0.22) 0%, transparent 70%);
      top: -120px;
      left: 10%;
      border-radius: 50%;
      filter: blur(50px);
      pointer-events: none;
    }

    .hero-glow-2 {
      position: absolute;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(132, 204, 22, 0.18) 0%, transparent 70%);
      bottom: -60px;
      right: 12%;
      border-radius: 50%;
      filter: blur(50px);
      pointer-events: none;
    }

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

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid var(--border-accent);
      box-shadow: var(--shadow-sm);
      padding: 6px 18px;
      border-radius: 50px;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 24px;
    }

    .hero-pill-dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.25);
    }

    /* H1 控制在20字以内 */
    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      color: var(--text-dark);
      letter-spacing: -1px;
      line-height: 1.25;
      margin-bottom: 22px;
    }

    .hero-h1 .highlight {
      color: var(--primary);
      background: linear-gradient(120deg, var(--primary) 0%, var(--accent-bright) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-body);
      max-width: 760px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-hero-portal {
      font-size: 1.1rem;
      padding: 14px 34px;
      background: linear-gradient(135deg, #059669 0%, #10b981 100%);
      color: #ffffff;
      border-radius: 50px;
      font-weight: 700;
      box-shadow: 0 10px 25px rgba(5, 150, 105, 0.35);
      border: 2px solid #a7f3d0;
    }

    .btn-hero-portal:hover {
      background: linear-gradient(135deg, #047857 0%, #059669 100%);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(5, 150, 105, 0.45);
    }

    /* 首屏指标卡片 (纯CSS与文字) */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .hero-stat-card {
      background: #ffffff;
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    }

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

    .stat-number {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 平台核心模型矩阵芯片 */
    .model-chips-wrap {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      margin-top: 40px;
    }

    .model-chips-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

    .model-chip-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .chip-item {
      font-size: 0.85rem;
      font-weight: 600;
      padding: 6px 14px;
      background: #f8fafc;
      border: 1px solid var(--border-subtle);
      border-radius: 30px;
      color: var(--text-body);
      transition: all var(--transition-fast);
    }

    .chip-item:hover {
      background: var(--primary-light);
      color: var(--primary);
      border-color: var(--border-accent);
      transform: translateY(-1px);
    }

    /* 通用栅格布局 */
    .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;
    }

    /* 服务能力与场景卡片 */
    .feature-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

    .feature-icon-box {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      margin-bottom: 20px;
    }

    .feature-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
    }

    .feature-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 16px;
    }

    .feature-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .tag-tiny {
      font-size: 0.75rem;
      padding: 3px 8px;
      background: #f1f5f9;
      color: #475569;
      border-radius: 4px;
      font-weight: 500;
    }

    /* 评测与对比板块 */
    .review-score-panel {
      background: linear-gradient(135deg, #059669 0%, #10b981 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
      margin-bottom: 36px;
    }

    .score-left {
      max-width: 600px;
    }

    .score-stars {
      color: #fef08a;
      font-size: 1.5rem;
      letter-spacing: 4px;
      margin-bottom: 8px;
    }

    .score-big {
      font-size: 3.6rem;
      font-weight: 900;
      line-height: 1;
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .score-scale {
      font-size: 1.25rem;
      font-weight: 500;
      opacity: 0.9;
    }

    .compare-table-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

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

    .compare-table th, .compare-table td {
      padding: 18px 22px;
      border-bottom: 1px solid var(--border-subtle);
    }

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

    .compare-table tr:hover td {
      background: #f0fdf4;
    }

    .col-highlight {
      background: rgba(16, 185, 129, 0.05);
      font-weight: 600;
      color: var(--primary-active);
    }

    /* 标准流程时间线 */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      width: 38px;
      height: 38px;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      border: 2px solid var(--border-accent);
    }

    .step-name {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 案例展示区 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-item-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-media-box {
      background: #e2e8f0;
      aspect-ratio: 16 / 9;
      position: relative;
      overflow: hidden;
    }

    .case-media-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform var(--transition-normal);
    }

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

    .case-body {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-cat {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .case-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* Token 比价卡片 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .token-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .token-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-lg);
    }

    .token-featured-tag {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--primary);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 20px;
    }

    .token-header {
      border-bottom: 1px solid var(--border-subtle);
      padding-bottom: 20px;
      margin-bottom: 20px;
    }

    .token-tier-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 6px;
    }

    .token-price {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      display: flex;
      align-items: baseline;
      gap: 4px;
    }

    .token-price span {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: normal;
    }

    .token-features-list {
      list-style: none;
      margin-bottom: 28px;
      flex-grow: 1;
    }

    .token-features-list li {
      font-size: 0.925rem;
      color: var(--text-body);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .token-features-list li svg {
      width: 16px;
      height: 16px;
      color: var(--primary);
      flex-shrink: 0;
    }

    /* 用户真实评价 6 条 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .review-user-info {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
    }

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
      border: 1px solid var(--border-accent);
    }

    .review-user-name {
      font-weight: 700;
      color: var(--text-dark);
      font-size: 1rem;
    }

    .review-user-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .review-text {
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .review-stars {
      color: #eab308;
      font-size: 0.9rem;
      letter-spacing: 2px;
    }

    /* FAQ 手风琴折叠 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color var(--transition-fast);
    }

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

    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--primary);
      transition: transform var(--transition-fast);
    }

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

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

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px 22px 24px;
      border-top: 1px solid var(--border-subtle);
    }

    .faq-answer p {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.65;
    }

    /* 表单与需求匹配 */
    .match-form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      max-width: 820px;
      margin: 0 auto;
    }

    .form-group-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 18px;
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      outline: none;
      background: #ffffff;
      color: var(--text-dark);
      transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 文章列表 */
    .article-links-box {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .article-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 0;
      border-bottom: 1px solid var(--border-subtle);
    }

    .article-row:last-child {
      border-bottom: none;
    }

    .article-title-link {
      font-weight: 600;
      color: var(--text-dark);
      font-size: 0.95rem;
    }

    .article-title-link:hover {
      color: var(--primary);
    }

    /* 机构与联系我们板块 */
    .contact-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 36px;
    }

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .contact-info-title {
      font-weight: 700;
      font-size: 1.1rem;
      color: var(--text-dark);
      margin-bottom: 10px;
    }

    .contact-info-desc {
      font-size: 0.95rem;
      color: var(--text-body);
    }

    .qr-container {
      display: flex;
      justify-content: center;
      margin-top: 14px;
    }

    .qr-container img {
      width: 140px;
      height: 140px;
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-sm);
      padding: 6px;
      background: #ffffff;
    }

    /* 宣传图展示条 */
    .banner-strip-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 36px;
    }

    .banner-strip-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
    }

    .banner-strip-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* 页脚必须统一容器与深色清晰文字 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 56px 0 32px 0;
      border-top: 2px solid var(--primary);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 12px;
    }

    .footer-desc {
      font-size: 0.9rem;
      line-height: 1.6;
      color: #cbd5e1;
      margin-bottom: 16px;
    }

    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 18px;
    }

    .footer-links-list {
      list-style: none;
    }

    .footer-links-list li {
      margin-bottom: 10px;
    }

    .footer-links-list a {
      color: #cbd5e1;
      font-size: 0.9rem;
      transition: color var(--transition-fast);
    }

    .footer-links-list a:hover {
      color: var(--accent-bright);
    }

    .friend-links-area {
      border-top: 1px solid #334155;
      padding-top: 24px;
      margin-top: 24px;
    }

    .friend-links-title {
      font-size: 0.875rem;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 12px;
    }

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

    .friend-links-list a {
      color: #94a3b8;
      font-size: 0.85rem;
      text-decoration: none;
      transition: color var(--transition-fast);
    }

    .friend-links-list a:hover {
      color: #34d399;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服入口 */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 28px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .kefu-btn-badge {
      width: 52px;
      height: 52px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
      cursor: pointer;
      border: 2px solid #ffffff;
      transition: transform var(--transition-fast);
    }

    .kefu-btn-badge:hover {
      transform: scale(1.08);
    }

    /* 移动端响应式适配 */
    @media (max-width: 992px) {
      .hero-h1 {
        font-size: 2.3rem;
      }
      .grid-4, .hero-stats-grid, .timeline-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .case-gallery-grid, .token-grid, .reviews-grid, .contact-card-grid, .banner-strip-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--border-subtle);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-item {
        width: 100%;
      }
      .nav-item a {
        padding: 12px 0;
        border-bottom: 1px solid #f1f5f9;
      }
      .nav-toggle {
        display: block;
      }
    }

    @media (max-width: 640px) {
      .section {
        padding: 60px 0;
      }
      .hero-h1 {
        font-size: 1.85rem;
      }
      .hero-subtitle {
        font-size: 1rem;
      }
      .hero-stats-grid, .timeline-steps, .grid-2, .form-group-row {
        grid-template-columns: 1fr;
      }
      .review-score-panel {
        padding: 24px;
      }
      .score-big {
        font-size: 2.8rem;
      }
    }