:root {
      --c-bg: #f7f9fd;
      --c-surface: #ffffff;
      --c-text-main: #141b2b;
      --c-text-muted: #55627a;
      --c-text-sub: #7887a0;
      --c-border: #e6ebf5;
      --c-border-hover: #cbd5e1;
      --c-brand-electric: #ff3366;
      --c-brand-neon: #7928ca;
      --c-brand-cyan: #00d2ff;
      --c-brand-lime: #00f076;
      --c-grad-trend: linear-gradient(135deg, #ff3366 0%, #7928ca 50%, #00d2ff 100%);
      --c-grad-light: linear-gradient(135deg, rgba(255,51,102,0.06) 0%, rgba(121,40,202,0.06) 50%, rgba(0,210,255,0.06) 100%);
      --c-grad-card: linear-gradient(180deg, #ffffff 0%, #fafcff 100%);
      --shadow-sm: 0 4px 12px rgba(20, 27, 43, 0.04);
      --shadow-md: 0 10px 30px rgba(20, 27, 43, 0.08);
      --shadow-trend: 0 12px 36px rgba(121, 40, 202, 0.16);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --radius-full: 9999px;
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--c-bg);
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--c-text-main);
      background: radial-gradient(circle at 10% 0%, rgba(255, 51, 102, 0.05) 0%, transparent 40%),
                  radial-gradient(circle at 90% 20%, rgba(0, 210, 255, 0.06) 0%, transparent 45%),
                  radial-gradient(circle at 50% 70%, rgba(121, 40, 202, 0.04) 0%, transparent 50%),
                  var(--c-bg);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 头部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--c-border);
      transition: box-shadow 0.3s ease;
    }

    .site-header.scrolled {
      box-shadow: var(--shadow-sm);
    }

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

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

    .brand-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

    .brand-text {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      background: var(--c-grad-trend);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--c-text-muted);
      border-radius: var(--radius-full);
      transition: all 0.2s ease;
    }

    .nav-links li a:hover {
      color: var(--c-text-main);
      background: rgba(121, 40, 202, 0.08);
    }

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

    .btn-nav-primary {
      padding: 9px 20px;
      font-size: 0.88rem;
      font-weight: 700;
      color: #ffffff;
      background: var(--c-grad-trend);
      border-radius: var(--radius-full);
      box-shadow: 0 4px 14px rgba(255, 51, 102, 0.25);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .btn-nav-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(121, 40, 202, 0.35);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      padding: 8px;
      cursor: pointer;
      color: var(--c-text-main);
    }

    /* 艳色潮流组件基类 */
    .trend-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: var(--c-grad-light);
      border: 1px solid rgba(255, 51, 102, 0.2);
      border-radius: var(--radius-full);
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--c-brand-neon);
      margin-bottom: 16px;
    }

    .trend-badge::before {
      content: "";
      width: 8px;
      height: 8px;
      background: var(--c-brand-electric);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 10px var(--c-brand-electric);
    }

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

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--c-text-main);
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--c-text-muted);
      line-height: 1.65;
    }

    .app-card {
      background: var(--c-grad-card);
      border: 1px solid var(--c-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      position: relative;
      overflow: hidden;
    }

    .app-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(121, 40, 202, 0.3);
    }

    /* 首屏 Hero（无图片，纯视觉与数据构建） */
    .hero-section {
      padding: 80px 0 64px 0;
      position: relative;
      overflow: hidden;
    }

    .hero-wrapper {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-h1 {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 900;
      color: var(--c-text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-h1 span {
      background: var(--c-grad-trend);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-sub {
      font-size: 1.1rem;
      color: var(--c-text-muted);
      margin-bottom: 32px;
      line-height: 1.7;
    }

    .hero-btn-group {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .btn-hero-official {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 800;
      color: #ffffff;
      background: var(--c-grad-trend);
      border-radius: var(--radius-full);
      box-shadow: 0 10px 24px rgba(255, 51, 102, 0.3);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.3s ease;
    }

    .btn-hero-official:hover {
      transform: translateY(-2px) scale(1.02);
      box-shadow: 0 14px 30px rgba(121, 40, 202, 0.45);
    }

    .btn-hero-sub {
      padding: 14px 26px;
      font-size: 1rem;
      font-weight: 700;
      color: var(--c-text-main);
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-full);
      box-shadow: var(--shadow-sm);
    }

    .btn-hero-sub:hover {
      border-color: var(--c-brand-neon);
      color: var(--c-brand-neon);
      background: #fdfefe;
    }

    .hero-highlights {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .highlight-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.86rem;
      font-weight: 600;
      color: var(--c-text-muted);
    }

    .highlight-pill svg {
      color: var(--c-brand-lime);
      background: rgba(0, 240, 118, 0.15);
      padding: 3px;
      border-radius: 50%;
    }

    /* 首屏右侧纯CSS科技质感看板（绝无图片） */
    .hero-visual-card {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-trend);
      position: relative;
    }

    .hero-visual-card::before {
      content: "";
      position: absolute;
      top: -1px;
      left: -1px;
      right: -1px;
      height: 4px;
      background: var(--c-grad-trend);
      border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }

    .engine-status-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-bottom: 16px;
      margin-bottom: 18px;
      border-bottom: 1px dashed var(--c-border);
    }

    .engine-title {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--c-text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .engine-dot {
      width: 10px;
      height: 10px;
      background: var(--c-brand-lime);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--c-brand-lime);
    }

    .engine-tag {
      font-size: 0.78rem;
      padding: 3px 10px;
      background: rgba(0, 210, 255, 0.1);
      color: #0284c7;
      border-radius: var(--radius-full);
      font-weight: 700;
    }

    .engine-model-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 22px;
    }

    .model-chip {
      padding: 6px 12px;
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-sm);
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--c-text-main);
    }

    .model-chip.hot {
      background: rgba(255, 51, 102, 0.08);
      border-color: rgba(255, 51, 102, 0.25);
      color: var(--c-brand-electric);
    }

    .model-chip.pro {
      background: rgba(121, 40, 202, 0.08);
      border-color: rgba(121, 40, 202, 0.25);
      color: var(--c-brand-neon);
    }

    .pipeline-preview {
      background: #f8fafc;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      padding: 16px;
    }

    .pipeline-step {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 8px 0;
      font-size: 0.85rem;
      border-bottom: 1px solid #edf2f7;
    }

    .pipeline-step:last-child {
      border-bottom: none;
    }

    .step-index {
      width: 22px;
      height: 22px;
      background: var(--c-grad-trend);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.72rem;
      font-weight: 800;
    }

    .step-text {
      flex: 1;
      font-weight: 600;
      color: var(--c-text-main);
    }

    .step-badge {
      font-size: 0.74rem;
      color: #0284c7;
      font-weight: 700;
    }

    /* 数据指标条 */
    .metrics-section {
      padding: 24px 0 64px 0;
    }

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

    .metric-box {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .metric-value {
      font-size: 2.2rem;
      font-weight: 900;
      line-height: 1.1;
      background: var(--c-grad-trend);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 0.9rem;
      color: var(--c-text-muted);
      font-weight: 600;
    }

    /* 关于我们 / 平台定位 */
    .content-section {
      padding: 64px 0;
    }

    .about-card {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

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

    .about-p {
      color: var(--c-text-muted);
      font-size: 0.98rem;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .feature-list-pill {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

    .feature-item-pill {
      padding: 10px 14px;
      background: #f8fafc;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--c-text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .feature-item-pill span {
      color: var(--c-brand-electric);
    }

    /* 服务能力卡片与场景网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-trend);
      border-color: rgba(255, 51, 102, 0.3);
    }

    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background: var(--c-grad-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 900;
      color: var(--c-brand-neon);
      margin-bottom: 18px;
    }

    .service-title {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--c-text-main);
      margin-bottom: 10px;
    }

    .service-desc {
      font-size: 0.9rem;
      color: var(--c-text-muted);
      line-height: 1.6;
      flex: 1;
    }

    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 16px;
    }

    .service-tags span {
      font-size: 0.75rem;
      font-weight: 700;
      background: #f1f5f9;
      color: var(--c-text-muted);
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* 素材图片展示区（遵循专用容器要求） */
    .media-showcase-grid {
      display: grid;
      grid-template-columns: 2fr 1.2fr;
      gap: 24px;
      margin-top: 36px;
    }

    .media-card {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .media-img-holder {
      width: 100%;
      background: #f1f5f9;
      display: block;
      position: relative;
    }

    .media-img-holder.banner-ratio {
      aspect-ratio: 16 / 9;
    }

    .media-img-holder.square-ratio {
      aspect-ratio: 1 / 1;
    }

    .media-img-holder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .media-card-info {
      padding: 16px 20px;
    }

    .media-card-title {
      font-size: 1rem;
      font-weight: 800;
      color: var(--c-text-main);
      margin-bottom: 4px;
    }

    .media-card-desc {
      font-size: 0.85rem;
      color: var(--c-text-muted);
    }

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

    .step-card {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .step-badge-num {
      font-size: 1.6rem;
      font-weight: 900;
      background: var(--c-grad-trend);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }

    .step-h4 {
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--c-text-main);
      margin-bottom: 8px;
    }

    .step-p {
      font-size: 0.88rem;
      color: var(--c-text-muted);
      line-height: 1.55;
    }

    /* 对比评测模块（明确满足 9.9分、5星、8大项对比） */
    .review-score-banner {
      background: linear-gradient(135deg, rgba(255,51,102,0.08) 0%, rgba(121,40,202,0.08) 100%);
      border: 1px solid rgba(121, 40, 202, 0.2);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 32px;
      flex-wrap: wrap;
      gap: 20px;
    }

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

    .score-num {
      font-size: 3rem;
      font-weight: 900;
      color: var(--c-brand-electric);
      line-height: 1;
    }

    .score-text-block {
      display: flex;
      flex-direction: column;
    }

    .score-title {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--c-text-main);
    }

    .score-stars {
      color: #ff9900;
      font-size: 1.1rem;
      letter-spacing: 2px;
    }

    .score-tag-right {
      background: #ffffff;
      padding: 8px 18px;
      border-radius: var(--radius-full);
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--c-brand-neon);
      border: 1px solid var(--c-border);
    }

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

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
      min-width: 650px;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--c-border);
    }

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

    .eval-table th.col-highlight,
    .eval-table td.col-highlight {
      background: rgba(121, 40, 202, 0.03);
      font-weight: 700;
      color: var(--c-brand-neon);
    }

    /* Token 比价与成本参考 */
    .token-pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .pricing-card {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .pricing-card.featured {
      border: 2px solid var(--c-brand-neon);
      box-shadow: var(--shadow-trend);
    }

    .featured-label {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--c-grad-trend);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 4px 14px;
      border-radius: var(--radius-full);
    }

    .pricing-tier-name {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .pricing-price {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--c-brand-electric);
      margin-bottom: 16px;
    }

    .pricing-price span {
      font-size: 0.9rem;
      color: var(--c-text-muted);
      font-weight: 500;
    }

    .pricing-features {
      list-style: none;
      text-align: left;
      margin-bottom: 24px;
      flex: 1;
    }

    .pricing-features li {
      padding: 8px 0;
      font-size: 0.88rem;
      color: var(--c-text-muted);
      border-bottom: 1px dashed #f1f5f9;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .pricing-features li::before {
      content: "✓";
      color: var(--c-brand-lime);
      font-weight: 900;
    }

    /* 需求匹配与表单 */
    .form-card-wrap {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      max-width: 800px;
      margin: 0 auto;
    }

    .custom-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .form-group-full {
      grid-column: span 2;
    }

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--c-text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--c-text-main);
      background: #f8fafc;
      transition: all 0.25s ease;
      outline: none;
    }

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

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

    .btn-submit-form {
      grid-column: span 2;
      padding: 14px 28px;
      background: var(--c-grad-trend);
      color: #ffffff;
      border: none;
      border-radius: var(--radius-full);
      font-size: 1.05rem;
      font-weight: 800;
      cursor: pointer;
      box-shadow: 0 8px 20px rgba(255, 51, 102, 0.25);
      transition: all 0.3s ease;
    }

    .btn-submit-form:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(121, 40, 202, 0.4);
    }

    /* 客户评论板块（严格满足6条不同背景的评论） */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 0.92rem;
      color: var(--c-text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      font-style: normal;
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--c-grad-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--c-brand-neon);
      font-size: 0.95rem;
    }

    .reviewer-name {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--c-text-main);
    }

    .reviewer-role {
      font-size: 0.78rem;
      color: var(--c-text-sub);
    }

    /* FAQ 手风琴面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s ease;
    }

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

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      text-align: left;
      background: none;
      border: none;
      font-size: 1rem;
      font-weight: 800;
      color: var(--c-text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-icon {
      font-size: 1.25rem;
      color: var(--c-brand-neon);
      transition: transform 0.25s ease;
    }

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

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

    .faq-item.active .faq-answer {
      border-top-color: #edf2f7;
    }

    .faq-answer-inner {
      padding: 18px 22px;
      font-size: 0.92rem;
      color: var(--c-text-muted);
      line-height: 1.7;
    }

    /* 行业资讯 & 最新文章 */
    .article-links-wrap {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 24px;
    }

    .article-links-list {
      list-style: none;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

    .article-links-list a {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.88rem;
      color: var(--c-brand-neon);
      font-weight: 600;
      padding: 6px 10px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
    }

    .article-links-list a:hover {
      background: rgba(121, 40, 202, 0.08);
    }

    /* 联络与加盟 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .contact-item-row {
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }

    .contact-label-tag {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--c-brand-neon);
      min-width: 90px;
    }

    .contact-val-text {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--c-text-main);
    }

    .qr-container {
      margin-top: 10px;
      padding: 16px;
      background: #f8fafc;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-md);
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      max-width: 170px;
    }

    .qr-container img {
      width: 130px;
      height: 130px;
      object-fit: cover;
      display: block;
      border-radius: 4px;
    }

    .qr-caption {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--c-text-muted);
      margin-top: 8px;
    }

    /* 友情链接 */
    .links-section {
      padding: 40px 0;
      border-top: 1px solid var(--c-border);
    }

    .friendship-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .friendship-links a {
      font-size: 0.85rem;
      color: var(--c-text-muted);
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid var(--c-border);
      border-radius: var(--radius-full);
    }

    .friendship-links a:hover {
      color: var(--c-brand-electric);
      border-color: var(--c-brand-electric);
    }

    /* 底部统一页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--c-border);
      padding: 48px 0 32px 0;
      color: var(--c-text-muted);
    }

    .footer-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 36px;
      margin-bottom: 36px;
      flex-wrap: wrap;
    }

    .footer-brand-info {
      max-width: 380px;
    }

    .footer-brand-title {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--c-text-main);
      margin-bottom: 12px;
    }

    .footer-brand-p {
      font-size: 0.88rem;
      line-height: 1.65;
    }

    .footer-nav-col {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col-title {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--c-text-main);
      margin-bottom: 6px;
    }

    .footer-nav-col a {
      font-size: 0.86rem;
      color: var(--c-text-muted);
    }

    .footer-nav-col a:hover {
      color: var(--c-brand-neon);
    }

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

    /* 浮动客服挂件 */
    .float-service-widget {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--c-border);
      box-shadow: var(--shadow-trend);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--c-brand-neon);
      transition: all 0.25s ease;
      position: relative;
    }

    .float-btn:hover {
      background: var(--c-grad-trend);
      color: #ffffff;
      transform: scale(1.08);
    }

    .float-qr-pop {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-trend);
      border: 1px solid var(--c-border);
      display: none;
      flex-direction: column;
      align-items: center;
      width: 140px;
    }

    .float-btn:hover .float-qr-pop {
      display: flex;
    }

    .float-qr-pop img {
      width: 110px;
      height: 110px;
      display: block;
    }

    .float-qr-pop span {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--c-text-main);
      margin-top: 6px;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .media-showcase-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .token-pricing-grid {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 24px;
        border-bottom: 1px solid var(--c-border);
        box-shadow: var(--shadow-md);
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 10px 0;
      }
      .mobile-menu-btn {
        display: block;
      }
    }

    @media (max-width: 640px) {
      .hero-h1 {
        font-size: 1.95rem;
      }
      .section-title {
        font-size: 1.65rem;
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .custom-form {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .btn-submit-form {
        grid-column: span 1;
      }
      .article-links-list {
        grid-template-columns: 1fr;
      }
      .footer-top {
        flex-direction: column;
        gap: 24px;
      }
    }