:root {
      --primary: #2563eb;
      --primary-hover: #1d4ed8;
      --accent: #ff4d00;
      --accent-soft: #fff4f0;
      --accent-lime: #00d084;
      --accent-cyan: #06b6d4;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-bold: #cbd5e1;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
      --shadow-accent: 0 12px 30px rgba(255, 77, 0, 0.15);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --max-width: 1200px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    .container {
      width: 100%;
      max-width: var(--max-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: 2px solid #ff4d00;
      box-shadow: var(--shadow-sm);
    }

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

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

    .brand-logo-wrap {
      max-height: 44px;
      display: flex;
      align-items: center;
    }

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

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

    .brand-name span {
      color: var(--accent);
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 12px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

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

    .nav-action {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn-nav {
      background: var(--primary);
      color: #ffffff !important;
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 0.9rem;
      display: inline-block;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }

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

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 1.2rem;
      color: var(--text-main);
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 700;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: all 0.25s ease;
      border: none;
      text-align: center;
    }

    .btn-accent {
      background: var(--accent);
      color: #ffffff;
      box-shadow: var(--shadow-accent);
    }

    .btn-accent:hover {
      background: #e04400;
      transform: translateY(-2px);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 2px solid var(--border-bold);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #f0f7ff;
    }

    /* 分区通用 */
    .section-block {
      padding: 70px 0;
      border-bottom: 1px solid var(--border-color);
    }

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

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent);
      background: var(--accent-soft);
      border: 1px solid rgba(255, 77, 0, 0.2);
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }

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

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

    /* Hero 首屏 (无图) */
    .hero-section {
      background: linear-gradient(135deg, #ffffff 0%, #fff7ed 50%, #f0fdf4 100%);
      padding: 70px 0 80px;
      position: relative;
      overflow: hidden;
      border-bottom: 3px solid var(--text-main);
    }

    .hero-container {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content {
      text-align: left;
    }

    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffe4e6;
      color: #e11d48;
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 20px;
      border: 1px solid rgba(225, 29, 72, 0.2);
    }

    .hero-title {
      font-size: 2.5rem;
      font-weight: 900;
      line-height: 1.2;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title .highlight {
      color: var(--accent);
      background: linear-gradient(120deg, rgba(255, 77, 0, 0.15) 0%, rgba(255, 77, 0, 0) 100%);
      padding: 0 6px;
      border-radius: 4px;
    }

    .hero-subtext {
      font-size: 1.125rem;
      color: var(--text-muted);
      margin-bottom: 32px;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 32px;
    }

    .hero-stats-inline {
      display: flex;
      gap: 24px;
      border-top: 2px dashed var(--border-bold);
      padding-top: 24px;
    }

    .stat-item h4 {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
    }

    .stat-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* Hero 右侧几何仪表卡片 */
    .hero-visual-card {
      background: #ffffff;
      border: 2px solid var(--text-main);
      box-shadow: 8px 8px 0px var(--text-main);
      border-radius: var(--radius-lg);
      padding: 30px;
      position: relative;
    }

    .hero-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 2px solid var(--border-color);
    }

    .hero-card-title {
      font-weight: 800;
      font-size: 1.1rem;
      color: var(--text-main);
    }

    .model-chip-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 24px;
    }

    .model-chip {
      background: #f1f5f9;
      border: 1px solid var(--border-color);
      padding: 5px 10px;
      border-radius: 6px;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--text-main);
      transition: all 0.2s;
    }

    .model-chip.hot {
      background: #ffedd5;
      color: #c2410c;
      border-color: #fdba74;
    }

    .model-chip.pro {
      background: #dbeafe;
      color: #1d4ed8;
      border-color: #93c5fd;
    }

    .hero-feature-list {
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .hero-feature-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .hero-feature-list li .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--accent-lime);
      box-shadow: 0 0 0 3px rgba(0, 208, 132, 0.2);
    }

    /* 平台核心架构介绍 */
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .intro-card {
      background: var(--bg-card);
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s;
      position: relative;
    }

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

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--accent-soft);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 900;
      margin-bottom: 18px;
      border: 1px solid rgba(255, 77, 0, 0.2);
    }

    .intro-card h3 {
      font-size: 1.25rem;
      margin-bottom: 10px;
      color: var(--text-main);
      font-weight: 700;
    }

    .intro-card p {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }

    /* 服务能力明艳卡片网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
      gap: 20px;
    }

    .service-card {
      background: #ffffff;
      border: 2px solid #0f172a;
      box-shadow: 4px 4px 0px #0f172a;
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.2s ease;
    }

    .service-card:hover {
      transform: translate(-2px, -2px);
      box-shadow: 6px 6px 0px var(--accent);
      border-color: var(--accent);
    }

    .service-card .svc-tag {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 3px 8px;
      border-radius: 4px;
      background: #f1f5f9;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .service-card h3 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .service-card .svc-action {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 行业解决方案 */
    .solution-tabs-wrap {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .sol-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 20px;
    }

    .sol-item {
      padding: 20px;
      background: #f8fafc;
      border-left: 4px solid var(--accent);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }

    .sol-item h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .sol-item p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 标准制作流程 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      position: relative;
    }

    .process-step {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      background: var(--text-main);
      color: #ffffff;
      font-weight: 900;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
      font-size: 1rem;
    }

    .process-step:nth-child(1) .step-num { background: var(--accent); }
    .process-step:nth-child(2) .step-num { background: var(--primary); }
    .process-step:nth-child(3) .step-num { background: var(--accent-cyan); }
    .process-step:nth-child(4) .step-num { background: var(--accent-lime); }

    .process-step h3 {
      font-size: 1.1rem;
      margin-bottom: 8px;
      font-weight: 800;
    }

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

    /* 案例中心 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-img-wrap {
      width: 100%;
      height: 220px;
      background: #e2e8f0;
      overflow: hidden;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }

    .case-body {
      padding: 20px;
    }

    .case-body h3 {
      font-size: 1.15rem;
      margin-bottom: 8px;
      font-weight: 700;
    }

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

    /* 对比评测明艳表格 */
    .eval-highlight-banner {
      background: linear-gradient(135deg, #ff4d00 0%, #ea580c 100%);
      color: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      margin-bottom: 28px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
      box-shadow: var(--shadow-accent);
    }

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

    .eval-big-score {
      font-size: 3.2rem;
      font-weight: 900;
      line-height: 1;
      background: #ffffff;
      color: var(--accent);
      padding: 6px 16px;
      border-radius: var(--radius-md);
    }

    .eval-score-text h4 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 4px;
    }

    .eval-stars {
      color: #fde047;
      font-size: 1.2rem;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: var(--radius-md);
      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: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 800;
      color: var(--text-main);
    }

    .compare-table .highlight-col {
      background: #fff7ed;
      font-weight: 700;
      color: var(--accent);
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .badge-check {
      display: inline-block;
      padding: 2px 8px;
      background: #dcfce7;
      color: #15803d;
      font-weight: 700;
      border-radius: 4px;
      font-size: 0.85rem;
    }

    .badge-cross {
      display: inline-block;
      padding: 2px 8px;
      background: #fee2e2;
      color: #b91c1c;
      font-weight: 700;
      border-radius: 4px;
      font-size: 0.85rem;
    }

    /* Token 比价 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 20px;
    }

    .token-card {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      transition: all 0.2s ease;
    }

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

    .token-name {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .token-price {
      font-size: 1.5rem;
      font-weight: 900;
      color: var(--accent);
      margin-bottom: 12px;
    }

    .token-price span {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: normal;
    }

    .token-meta {
      font-size: 0.85rem;
      color: var(--text-muted);
      border-top: 1px dashed var(--border-color);
      padding-top: 10px;
      line-height: 1.5;
    }

    /* 加盟代理模块 */
    .agent-box {
      background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
      border: 2px solid var(--primary);
      border-radius: var(--radius-lg);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }

    .agent-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 14px;
      color: var(--text-main);
    }

    .agent-content p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1rem;
    }

    .agent-benefits {
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .agent-benefits li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      color: var(--text-main);
    }

    /* 用户评论 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .testi-card {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testi-rating {
      color: #f59e0b;
      font-size: 1rem;
      margin-bottom: 12px;
    }

    .testi-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: italic;
    }

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

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--text-main);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.95rem;
    }

    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: grid;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s ease;
    }

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

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

    .faq-question::after {
      content: "+";
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--accent);
      transition: transform 0.2s ease;
    }

    .faq-item.active .faq-question::after {
      content: "-";
      color: var(--primary);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 表单与联系区 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .contact-info h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .contact-info p {
      color: var(--text-muted);
      font-size: 0.95rem;
      margin-bottom: 24px;
    }

    .qr-card {
      display: flex;
      align-items: center;
      gap: 16px;
      background: #f8fafc;
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      margin-bottom: 20px;
    }

    .qr-card img {
      width: 90px;
      height: 90px;
      object-fit: cover;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }

    .qr-details h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .qr-details p {
      margin: 0;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .contact-meta-list {
      list-style: none;
      display: grid;
      gap: 10px;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
    }

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

    /* 资讯与友情链接 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 16px;
      margin-bottom: 40px;
    }

    .news-link-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      display: block;
      transition: all 0.2s ease;
    }

    .news-link-card:hover {
      border-color: var(--accent);
      color: var(--accent);
      transform: translateX(4px);
    }

    .footer-links-wrap {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      margin-top: 30px;
    }

    .footer-links-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .friendly-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friendly-links a {
      font-size: 0.85rem;
      color: var(--text-light);
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 4px 10px;
      border-radius: 4px;
    }

    .friendly-links a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 40px 0 24px;
      font-size: 0.9rem;
    }

    .footer-container {
      display: flex;
      flex-direction: column;
      gap: 20px;
      align-items: center;
      text-align: center;
    }

    .footer-nav {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      list-style: none;
    }

    .footer-nav a {
      color: #cbd5e1;
      font-weight: 600;
    }

    .footer-nav a:hover {
      color: #ff4d00;
    }

    .footer-copyright {
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动工具栏 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 2px solid var(--text-main);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--text-main);
      cursor: pointer;
      transition: all 0.2s;
    }

    .float-btn:hover {
      background: var(--accent);
      color: #ffffff;
      border-color: var(--accent);
      transform: translateY(-2px);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-container {
        grid-template-columns: 1fr;
      }
      .hero-visual-card {
        margin-top: 10px;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .agent-box {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .site-header {
        position: relative;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 2px solid var(--border-bold);
        padding: 16px 0;
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        padding: 12px;
      }
      .hero-title {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.7rem;
      }
    }