:root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --accent-coral: #f43f5e;
      --accent-purple: #7c3aed;
      --accent-amber: #f59e0b;
      --accent-cyan: #06b6d4;
      --accent-emerald: #10b981;
      --bg-page: #f8fafc;
      --bg-surface: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #3b82f6;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
      --shadow-hover: 0 20px 25px -5px rgba(37, 99, 235, 0.12), 0 8px 10px -6px rgba(37, 99, 235, 0.08);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --container-width: 1200px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    *, *::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, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 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 var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .brand-badge {
      display: inline-block;
      font-size: 0.75rem;
      background: #eff6ff;
      color: var(--primary);
      border: 1px solid #bfdbfe;
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-weight: 600;
    }

    .nav-menu {
      display: flex;
      align-items: center;
    }

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

    .nav-item {
      display: inline-block;
    }

    .nav-link {
      display: block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-link:hover, .nav-link.active {
      color: var(--primary);
      background-color: #eff6ff;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: 16px;
    }

    .btn-nav-primary {
      background: var(--primary);
      color: #ffffff;
      padding: 9px 20px;
      border-radius: var(--radius-full);
      font-weight: 600;
      font-size: 0.9rem;
      box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
    }

    .btn-nav-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
    }

    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* 区域通用样式 */
    .section-padding {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }

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

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 14px;
      border-radius: var(--radius-full);
      margin-bottom: 14px;
    }

    .tag-blue { background: #dbeafe; color: #1e40af; }
    .tag-purple { background: #ede9fe; color: #5b21b6; }
    .tag-coral { background: #ffe4e6; color: #9f1239; }
    .tag-emerald { background: #d1fae5; color: #065f46; }
    .tag-amber { background: #fef3c7; color: #92400e; }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }

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

    /* Hero 首屏 (严禁包含图片) */
    .hero-section {
      padding: 90px 0 80px;
      background: linear-gradient(135deg, #eff6ff 0%, #fdf2f8 50%, #f0fdf4 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid #bfdbfe;
      padding: 6px 16px;
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-badge span.pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-coral);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 0 3px rgba(244, 63, 94, 0.2);
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      color: #0f172a;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

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

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 48px;
    }

    .btn-hero-official {
      background: linear-gradient(135deg, #2563eb, #1d4ed8);
      color: #ffffff;
      font-size: 1.15rem;
      font-weight: 700;
      padding: 16px 36px;
      border-radius: var(--radius-full);
      box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.4);
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }

    .btn-hero-official:hover {
      background: linear-gradient(135deg, #1d4ed8, #1e40af);
      transform: translateY(-2px);
      box-shadow: 0 15px 30px -5px rgba(37, 99, 235, 0.5);
    }

    .btn-hero-secondary {
      background: #ffffff;
      color: var(--text-main);
      border: 2px solid var(--border-color);
      font-size: 1.05rem;
      font-weight: 700;
      padding: 14px 28px;
      border-radius: var(--radius-full);
      box-shadow: var(--shadow-sm);
    }

    .btn-hero-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #eff6ff;
    }

    .hero-highlights-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 10px;
    }

    .hero-highlight-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 20px 16px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      text-align: left;
      transition: var(--transition);
    }

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

    .hero-card-num {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .hero-card-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .hero-card-desc {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 模型阵列条目 */
    .models-bar-section {
      background: #ffffff;
      padding: 28px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .models-bar-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-sub);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 16px;
      text-align: center;
    }

    .models-tags-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-badge {
      display: inline-flex;
      align-items: center;
      padding: 6px 14px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition);
    }

    .model-badge:hover {
      background: #eff6ff;
      border-color: #93c5fd;
      color: var(--primary);
      transform: translateY(-1px);
    }

    /* 平台介绍 & 核心能力 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-info-title {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 20px;
      color: var(--text-main);
    }

    .about-info-p {
      color: var(--text-muted);
      margin-bottom: 16px;
      font-size: 1rem;
      line-height: 1.7;
    }

    .about-features-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }

    .about-feature-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: var(--radius-md);
      border-left: 4px solid var(--primary);
    }

    .about-feature-title {
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 4px;
      color: var(--text-main);
    }

    .about-feature-desc {
      font-size: 0.85rem;
      color: var(--text-sub);
    }

    .about-media-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 16px;
      box-shadow: var(--shadow-md);
    }

    .about-media-box img {
      width: 100%;
      height: auto;
      border-radius: var(--radius-md);
      display: block;
    }

    /* 卡片网格 (AIGC 服务矩阵) */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #bfdbfe;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--primary);
      opacity: 0;
      transition: var(--transition);
    }

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

    .service-card.card-accent-coral::before { background: var(--accent-coral); }
    .service-card.card-accent-purple::before { background: var(--accent-purple); }
    .service-card.card-accent-emerald::before { background: var(--accent-emerald); }
    .service-card.card-accent-amber::before { background: var(--accent-amber); }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.2rem;
      margin-bottom: 18px;
    }

    .icon-blue { background: #eff6ff; color: var(--primary); }
    .icon-coral { background: #ffe4e6; color: var(--accent-coral); }
    .icon-purple { background: #f3e8ff; color: var(--accent-purple); }
    .icon-emerald { background: #ecfdf5; color: var(--accent-emerald); }
    .icon-amber { background: #fef3c7; color: var(--accent-amber); }

    .service-card-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .service-card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .service-card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: auto;
    }

    .service-tag {
      font-size: 0.78rem;
      background: #f1f5f9;
      color: var(--text-sub);
      padding: 3px 10px;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }

    /* 一站式制作场景 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scene-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px 18px;
      transition: var(--transition);
    }

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

    .scene-card-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 10px;
    }

    .scene-name {
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-main);
    }

    .scene-chip {
      font-size: 0.72rem;
      padding: 2px 8px;
      border-radius: var(--radius-full);
      background: #eff6ff;
      color: var(--primary);
      font-weight: 600;
    }

    .scene-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 标准流程时间线 */
    .flow-steps-grid {
      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-lg);
      padding: 28px 20px;
      text-align: center;
      position: relative;
      transition: var(--transition);
    }

    .flow-step-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .flow-step-num {
      width: 44px;
      height: 44px;
      background: var(--primary);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin: 0 auto 18px;
      box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
    }

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

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

    /* 对比评测板块 */
    .compare-section-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .rating-summary-banner {
      background: linear-gradient(135deg, #1e293b, #0f172a);
      color: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 32px;
    }

    .rating-left h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .rating-left p {
      color: #94a3b8;
      font-size: 0.95rem;
    }

    .rating-right {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .rating-score-block {
      text-align: right;
    }

    .rating-number {
      font-size: 2.8rem;
      font-weight: 900;
      color: #fbbf24;
      line-height: 1;
    }

    .rating-stars {
      color: #fbbf24;
      font-size: 1.2rem;
      margin-top: 4px;
    }

    .compare-table-responsive {
      width: 100%;
      overflow-x: auto;
    }

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }

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

    .col-highlight {
      background: #f0fdf4 !important;
      font-weight: 700;
      color: #166534;
    }

    .table-check {
      color: var(--accent-emerald);
      font-weight: 800;
      font-size: 1.1rem;
    }

    .table-cross {
      color: #94a3b8;
      font-weight: 600;
    }

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

    .price-card {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      text-align: center;
      transition: var(--transition);
      position: relative;
    }

    .price-card.featured {
      border-color: var(--primary);
      box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.2);
    }

    .price-card-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent-coral);
      color: #ffffff;
      padding: 4px 16px;
      border-radius: var(--radius-full);
      font-size: 0.75rem;
      font-weight: 800;
      letter-spacing: 0.5px;
    }

    .price-card-tier {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .price-value-box {
      margin: 20px 0;
    }

    .price-amount {
      font-size: 2.5rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .price-unit {
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    .price-features-list {
      text-align: left;
      margin: 24px 0;
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .price-features-list li {
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .price-btn {
      display: block;
      width: 100%;
      padding: 12px;
      border-radius: var(--radius-full);
      font-weight: 700;
      font-size: 0.95rem;
      text-align: center;
      border: 1px solid var(--primary);
      color: var(--primary);
      background: #ffffff;
      transition: var(--transition);
    }

    .price-btn:hover, .price-card.featured .price-btn {
      background: var(--primary);
      color: #ffffff;
    }

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

    .case-banner-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

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

    .case-banner-content {
      padding: 20px;
    }

    .case-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .case-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

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

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

    .review-stars {
      color: #f59e0b;
      margin-bottom: 12px;
      font-size: 1.1rem;
    }

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

    .review-author-box {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      border: 2px solid #bfdbfe;
    }

    .author-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-role {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 加盟代理板块 */
    .agent-card-banner {
      background: linear-gradient(135deg, #1e1b4b, #312e81);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 48px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
      align-items: center;
    }

    .agent-title {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 14px;
      color: #ffffff;
    }

    .agent-desc {
      font-size: 1.05rem;
      color: #c7d2fe;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .agent-benefits-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .agent-benefit-item {
      background: rgba(255, 255, 255, 0.1);
      padding: 12px 16px;
      border-radius: var(--radius-md);
      font-size: 0.9rem;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .agent-action-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      text-align: center;
      color: var(--text-main);
      box-shadow: var(--shadow-lg);
    }

    .agent-action-box h4 {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .agent-action-box p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

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

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: transparent;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

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

    .faq-arrow {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--text-sub);
    }

    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #f8fafc;
      border-top: 1px solid transparent;
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
      border-top-color: var(--border-color);
    }

    .faq-answer-inner {
      padding: 18px 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* AI 百科 & 知识卡片 */
    .wiki-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .wiki-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px;
      transition: var(--transition);
    }

    .wiki-card:hover {
      border-color: var(--accent-purple);
      box-shadow: var(--shadow-sm);
    }

    .wiki-term {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .wiki-term::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--accent-purple);
      border-radius: 50%;
    }

    .wiki-explain {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 行业资讯 & 最新文章 */
    .news-section-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
    }

    .news-links-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .news-link-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      background: #f8fafc;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition);
    }

    .news-link-item:hover {
      border-color: var(--primary);
      background: #eff6ff;
      color: var(--primary);
      transform: translateX(4px);
    }

    /* 联系我们 & 需求表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

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

    .contact-meta-item {
      margin-bottom: 20px;
    }

    .contact-meta-label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-sub);
      margin-bottom: 4px;
    }

    .contact-meta-value {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .qr-box {
      margin-top: 20px;
      padding: 16px;
      background: #f8fafc;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      display: inline-block;
      text-align: center;
      max-width: 200px;
    }

    .qr-box img {
      width: 100%;
      height: auto;
      border-radius: var(--radius-sm);
      display: block;
      margin-bottom: 8px;
    }

    .qr-box span {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 表单组件 */
    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

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

    .btn-submit {
      width: 100%;
      padding: 14px;
      background: var(--primary);
      color: #ffffff;
      border: none;
      border-radius: var(--radius-md);
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
      transition: var(--transition);
    }

    .btn-submit:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
    }

    /* 页脚样式 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px;
      color: var(--text-muted);
      font-size: 0.92rem;
    }

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

    .footer-brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .footer-brand-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

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

    .footer-link-list a {
      color: var(--text-muted);
    }

    .footer-link-list a:hover {
      color: var(--primary);
    }

    .friend-links-box {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

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

    .friend-links-list a {
      color: var(--text-sub);
      font-size: 0.88rem;
    }

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

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.85rem;
      color: var(--text-sub);
    }

    /* 浮动操作条与返回顶部 */
    .floating-bar {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-main);
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
    }

    .floating-btn:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.2rem; }
      .hero-highlights-grid { grid-template-columns: repeat(2, 1fr); }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .scene-grid { grid-template-columns: repeat(2, 1fr); }
      .flow-steps-grid { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .contact-wrapper { grid-template-columns: 1fr; }
      .agent-card-banner { grid-template-columns: 1fr; }
      .case-media-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .mobile-toggle { display: block; }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        flex-direction: column;
        align-items: flex-start;
        box-shadow: var(--shadow-lg);
      }
      .nav-menu.show { display: flex; }
      .nav-links {
        flex-direction: column;
        width: 100%;
        align-items: flex-start;
      }
      .nav-item { width: 100%; }
      .nav-link { width: 100%; padding: 10px 0; }
      .nav-actions { margin-left: 0; margin-top: 16px; width: 100%; }
      .btn-nav-primary { width: 100%; text-align: center; }
      .hero-title { font-size: 1.85rem; }
      .hero-subtitle { font-size: 1.05rem; }
      .hero-highlights-grid { grid-template-columns: 1fr; }
      .about-grid { grid-template-columns: 1fr; }
      .about-features-list { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: 1fr; }
      .scene-grid { grid-template-columns: 1fr; }
      .flow-steps-grid { grid-template-columns: 1fr; }
      .token-price-grid { grid-template-columns: 1fr; }
      .wiki-grid { grid-template-columns: 1fr; }
      .news-links-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }