:root {
      --bg-page: #f7f9fd;
      --bg-surface: #ffffff;
      --bg-surface-alt: #f0f4fa;
      --text-main: #111827;
      --text-sub: #4b5563;
      --text-muted: #6b7280;
      --primary: #2563eb;
      --accent-pop: #ff4713;
      --accent-yellow: #f59e0b;
      --accent-cyan: #06b6d4;
      --accent-purple: #7c3aed;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 4px rgba(17, 24, 39, 0.04);
      --shadow-md: 0 10px 24px rgba(37, 99, 235, 0.08), 0 4px 12px rgba(17, 24, 39, 0.03);
      --shadow-pop: 0 12px 28px rgba(255, 71, 19, 0.16);
      --transition: all 0.28s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .main-container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 头部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid #e5eaf2;
    }

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

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

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

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

    .nav-links a {
      color: var(--text-main);
      text-decoration: none;
      font-size: 15px;
      font-weight: 600;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      position: relative;
    }

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

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

    .btn-solid-pop {
      background: linear-gradient(135deg, var(--accent-pop), #ff782d);
      color: #ffffff;
      text-decoration: none;
      font-weight: 700;
      font-size: 14px;
      padding: 10px 20px;
      border-radius: 30px;
      box-shadow: 0 4px 14px rgba(255, 71, 19, 0.3);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: none;
      cursor: pointer;
    }

    .btn-solid-pop:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(255, 71, 19, 0.4);
    }

    .btn-outline-primary {
      border: 2px solid var(--primary);
      color: var(--primary);
      background: transparent;
      text-decoration: none;
      font-weight: 700;
      font-size: 14px;
      padding: 8px 18px;
      border-radius: 30px;
      transition: var(--transition);
    }

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

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 2px solid var(--border-color);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      font-size: 20px;
      cursor: pointer;
    }

    /* 首屏 Hero 无图片区，通过撞色色块与纯 CSS 视觉实现 */
    .hero-section {
      padding: 70px 0 60px;
      background: radial-gradient(circle at 85% 15%, rgba(255, 71, 19, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 15% 80%, rgba(37, 99, 235, 0.08) 0%, transparent 45%),
                  #ffffff;
      border-bottom: 2px solid #ebf0f8;
      position: relative;
      overflow: hidden;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff3ec;
      border: 1.5px solid #ffd4bd;
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 700;
      color: var(--accent-pop);
      margin-bottom: 20px;
    }

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

    .hero-title {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 900;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-highlight {
      background: linear-gradient(120deg, #1d4ed8, #ff4713);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 18px;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 34px;
    }

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

    .btn-hero-main {
      background: linear-gradient(135deg, #ff4713, #ff6b3d);
      color: #ffffff;
      font-size: 18px;
      font-weight: 800;
      padding: 14px 38px;
      border-radius: 40px;
      text-decoration: none;
      box-shadow: 0 10px 24px rgba(255, 71, 19, 0.35);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-hero-main:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 14px 30px rgba(255, 71, 19, 0.45);
    }

    .btn-hero-secondary {
      background: #0f172a;
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      padding: 14px 32px;
      border-radius: 40px;
      text-decoration: none;
      transition: var(--transition);
      border: 2px solid #0f172a;
    }

    .btn-hero-secondary:hover {
      background: #1e293b;
      color: #ffffff;
      transform: translateY(-2px);
    }

    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .metric-item {
      background: #ffffff;
      border: 2px solid #e9eef6;
      border-radius: var(--radius-md);
      padding: 20px 16px;
      text-align: center;
      transition: var(--transition);
    }

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

    .metric-val {
      font-size: 28px;
      font-weight: 900;
      color: #1e3a8a;
      display: block;
      margin-bottom: 4px;
    }

    .metric-val.accent {
      color: var(--accent-pop);
    }

    .metric-title {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 通用区块排版 */
    section.page-block {
      padding: 70px 0;
      border-bottom: 1px solid #e5eaf2;
    }

    .block-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }

    .block-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background: #e0e7ff;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }

    .block-tag.orange {
      color: #ea580c;
      background: #ffedd5;
    }

    .block-tag.purple {
      color: #6d28d9;
      background: #ede9fe;
    }

    .block-title {
      font-size: 32px;
      font-weight: 900;
      color: #0f172a;
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .block-desc {
      font-size: 16px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 平台核心卡片与模型 */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-bottom: 35px;
    }

    .model-pill {
      background: #ffffff;
      border: 1.5px solid #dbeafe;
      color: #1e40af;
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 700;
      transition: var(--transition);
    }

    .model-pill:hover {
      background: #2563eb;
      color: #ffffff;
      border-color: #2563eb;
      transform: translateY(-2px);
    }

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

    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 2px solid #e2e8f0;
      padding: 28px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .service-card:hover {
      border-color: var(--accent-pop);
      transform: translateY(-5px);
      box-shadow: 0 16px 30px rgba(0, 0, 0, 0.06);
    }

    .service-card.highlight-card {
      border-color: #3b82f6;
      background: linear-gradient(180deg, #ffffff 0%, #f8faff 100%);
    }

    .service-badge {
      position: absolute;
      top: 18px;
      right: 18px;
      font-size: 11px;
      font-weight: 800;
      padding: 3px 8px;
      border-radius: 6px;
      background: #fee2e2;
      color: #b91c1c;
    }

    .service-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: 900;
      margin-bottom: 20px;
      border: 2px solid #dbeafe;
    }

    .service-card.highlight-card .service-icon-box {
      background: #fff7ed;
      color: var(--accent-pop);
      border-color: #ffedd5;
    }

    .service-title {
      font-size: 20px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 10px;
    }

    .service-detail {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .service-features {
      list-style: none;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
      display: flex;
      flex-direction: column;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
    }

    .service-features li::before {
      content: "✔";
      color: #10b981;
      margin-right: 6px;
    }

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

    .scenario-card {
      background: #ffffff;
      border: 2px solid #e5eaf2;
      border-radius: var(--radius-md);
      padding: 22px;
      transition: var(--transition);
    }

    .scenario-card:hover {
      border-color: #f97316;
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .scenario-tag {
      font-size: 11px;
      font-weight: 700;
      color: #2563eb;
      background: #dbeafe;
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 10px;
    }

    .scenario-name {
      font-size: 17px;
      font-weight: 800;
      color: #111827;
      margin-bottom: 8px;
    }

    .scenario-text {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.55;
    }

    /* 对比评测高亮板块 */
    .rating-banner {
      background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 40px;
      border: 3px solid #ff4713;
      box-shadow: var(--shadow-pop);
    }

    .rating-info {
      max-width: 650px;
    }

    .rating-score-box {
      text-align: center;
      background: rgba(255, 255, 255, 0.08);
      border: 2px solid #ff6b3d;
      padding: 24px 32px;
      border-radius: var(--radius-md);
      min-width: 220px;
    }

    .score-num {
      font-size: 54px;
      font-weight: 900;
      color: #fbbf24;
      line-height: 1;
      margin-bottom: 6px;
    }

    .score-stars {
      color: #fbbf24;
      font-size: 20px;
      margin-bottom: 4px;
    }

    .score-label {
      font-size: 13px;
      color: #cbd5e1;
    }

    .compare-table-wrap {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 2px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    .compare-table th, 
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #edf2f7;
    }

    .compare-table th {
      background: #f8fafc;
      color: #0f172a;
      font-weight: 800;
    }

    .compare-table tr:hover td {
      background: #f8fbff;
    }

    .compare-highlight-cell {
      background: #fff7ed;
      color: #c2410c;
      font-weight: 800;
      border-left: 2px solid #ea580c;
      border-right: 2px solid #ea580c;
    }

    .compare-table th.compare-highlight-header {
      background: #ea580c;
      color: #ffffff;
      font-weight: 900;
    }

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

    .flow-step-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      transition: var(--transition);
    }

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

    .flow-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: #2563eb;
      color: #ffffff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      font-size: 15px;
    }

    .flow-title {
      font-size: 18px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .flow-desc {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 案例图片板块 */
    .media-card-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: center;
      margin-bottom: 30px;
    }

    .media-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .media-img-holder {
      width: 100%;
      position: relative;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .media-img-holder img {
      width: 100%;
      height: auto;
      max-height: 460px;
      object-fit: contain;
      display: block;
    }

    .media-content-pad {
      padding: 20px;
    }

    .media-title {
      font-size: 18px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 6px;
    }

    .media-intro {
      font-size: 14px;
      color: var(--text-sub);
    }

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

    .pricing-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 30px;
      position: relative;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .pricing-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .pricing-card.featured {
      border: 3px solid #ff4713;
      background: linear-gradient(180deg, #fffcfb 0%, #ffffff 100%);
    }

    .pricing-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: #ff4713;
      color: #ffffff;
      font-size: 12px;
      font-weight: 800;
      padding: 4px 12px;
      border-radius: 20px;
    }

    .pricing-tier {
      font-size: 20px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 12px;
    }

    .pricing-price {
      font-size: 38px;
      font-weight: 900;
      color: #1e3a8a;
      margin-bottom: 16px;
    }

    .pricing-price span {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    .pricing-list {
      list-style: none;
      margin-bottom: 26px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 14px;
      color: #334155;
    }

    .pricing-list li::before {
      content: "✔";
      color: #2563eb;
      font-weight: bold;
      margin-right: 8px;
    }

    /* 客户评价板块（6条） */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testimonial-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
    }

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

    .testimonial-head {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 14px;
    }

    .avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #2563eb;
      color: #ffffff;
      font-size: 16px;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .avatar-char.pop {
      background: #ea580c;
    }

    .user-name {
      font-weight: 800;
      font-size: 16px;
      color: #0f172a;
    }

    .user-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    .testimonial-body {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* FAQ 手风琴面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: #cbd5e1;
    }

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

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 800;
      color: #0f172a;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
    }

    .faq-question::after {
      content: "+";
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      transition: var(--transition);
    }

    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
      color: var(--accent-pop);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #f8fafc;
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-answer-inner {
      padding: 18px 24px;
      border-top: 1px solid #edf2f7;
    }

    /* 需求表单与联系我们 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1.3fr;
      gap: 36px;
      align-items: start;
    }

    .contact-info-panel {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 32px;
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 20px;
    }

    .contact-icon-badge {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: #eff6ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: bold;
      flex-shrink: 0;
    }

    .contact-label {
      font-size: 12px;
      color: var(--text-muted);
      font-weight: 700;
    }

    .contact-val {
      font-size: 15px;
      font-weight: 800;
      color: #0f172a;
    }

    .qr-container {
      margin-top: 24px;
      padding-top: 24px;
      border-top: 1px dashed var(--border-color);
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .qr-img-box {
      width: 110px;
      height: 110px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 2px solid #cbd5e1;
      flex-shrink: 0;
    }

    .qr-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .form-box {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 34px;
      box-shadow: var(--shadow-sm);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 2px solid #cbd5e1;
      font-size: 14px;
      color: #0f172a;
      background: #ffffff;
      transition: var(--transition);
      outline: none;
    }

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

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

    .btn-submit {
      width: 100%;
      background: linear-gradient(135deg, var(--accent-pop), #ff6b3d);
      color: #ffffff;
      font-size: 16px;
      font-weight: 800;
      padding: 14px;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(255, 71, 19, 0.35);
      transition: var(--transition);
    }

    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(255, 71, 19, 0.45);
    }

    /* 行业资讯与文章 */
    .article-wrap-box {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 30px;
    }

    .article-links-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px dashed var(--border-color);
    }

    .article-ext-link {
      display: inline-block;
      padding: 6px 14px;
      background: #f1f5f9;
      color: #1e40af;
      text-decoration: none;
      font-size: 13px;
      font-weight: 600;
      border-radius: 6px;
      transition: var(--transition);
    }

    .article-ext-link:hover {
      background: #2563eb;
      color: #ffffff;
    }

    /* 底部链接与通用页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 2px solid #e2e8f0;
      padding: 50px 0 30px;
      margin-top: 40px;
    }

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

    .footer-desc {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-top: 12px;
      max-width: 420px;
    }

    .footer-title {
      font-size: 16px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 16px;
    }

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

    .friendly-links a {
      color: var(--text-sub);
      text-decoration: none;
      font-size: 14px;
      transition: var(--transition);
    }

    .friendly-links a:hover {
      color: var(--accent-pop);
    }

    .footer-bottom-bar {
      padding-top: 24px;
      border-top: 1px solid #edf2f7;
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 浮动组件 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 2px solid #e2e8f0;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0f172a;
      text-decoration: none;
      font-size: 18px;
      font-weight: 800;
      cursor: pointer;
      transition: var(--transition);
    }

    .float-btn:hover {
      background: #2563eb;
      color: #ffffff;
      border-color: #2563eb;
      transform: scale(1.08);
    }

    .float-btn.pop-btn {
      background: #ff4713;
      color: #ffffff;
      border-color: #ff4713;
    }

    .float-btn.pop-btn:hover {
      background: #e03b0d;
    }

    /* 响应式媒体查询 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 32px;
      }
      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .rating-banner {
        flex-direction: column;
        text-align: center;
        gap: 24px;
      }
      .rating-score-box {
        width: 100%;
      }
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .media-card-grid {
        grid-template-columns: 1fr;
      }
      .token-pricing-grid {
        grid-template-columns: 1fr;
      }
      .testimonial-grid {
        grid-template-columns: 1fr;
      }
      .contact-layout {
        grid-template-columns: 1fr;
      }
      .footer-columns {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px 0;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
    }

    @media (max-width: 600px) {
      .hero-title {
        font-size: 26px;
      }
      .hero-lead {
        font-size: 15px;
      }
      .hero-metrics-grid {
        grid-template-columns: 1fr;
      }
      .service-grid {
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .flow-steps-grid {
        grid-template-columns: 1fr;
      }
    }