:root {
      --primary: #5c16e5;
      --primary-hover: #480ec2;
      --accent: #ff2d60;
      --accent-cyan: #00e5ff;
      --accent-yellow: #ffb800;
      --bg-light: #f7f9fd;
      --surface: #ffffff;
      --text-main: #141824;
      --text-muted: #5b6479;
      --border-color: #e2e8f0;
      --card-shadow: 0 10px 30px rgba(92, 22, 229, 0.08);
      --card-hover-shadow: 0 20px 40px rgba(92, 22, 229, 0.16);
      --gradient-brand: linear-gradient(135deg, #ff2d60 0%, #5c16e5 50%, #00e5ff 100%);
      --gradient-tag: linear-gradient(90deg, #ff2d60, #ff8c00);
      --max-width: 1240px;
    }

    * {
      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, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 45, 96, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 229, 255, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(92, 22, 229, 0.02) 0%, transparent 60%);
      background-attachment: fixed;
    }

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

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

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

    .section-padding {
      padding: 80px 0;
      position: relative;
    }

    .section-head {
      text-align: center;
      margin-bottom: 50px;
      position: relative;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      color: #fff;
      background: var(--gradient-brand);
      padding: 4px 14px;
      border-radius: 999px;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      letter-spacing: -0.02em;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 720px;
      margin: 0 auto;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      text-align: center;
    }

    .btn-primary {
      background: var(--gradient-brand);
      color: #fff;
      box-shadow: 0 4px 15px rgba(92, 22, 229, 0.3);
    }

    .btn-primary:hover {
      box-shadow: 0 6px 20px rgba(92, 22, 229, 0.45);
      transform: translateY(-2px);
    }

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

    .btn-outline:hover {
      background: rgba(92, 22, 229, 0.06);
      transform: translateY(-2px);
    }

    .btn-white {
      background: #fff;
      color: var(--text-main);
      box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    }

    .btn-white:hover {
      background: #f8fafc;
      transform: translateY(-2px);
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: background 0.3s;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

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

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

    .brand-name {
      font-size: 1.4rem;
      font-weight: 800;
      background: var(--gradient-brand);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.02em;
    }

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

    .nav-links li a {
      padding: 8px 12px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: 6px;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(92, 22, 229, 0.05);
    }

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

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 4px;
    }

    /* 首屏 Hero (禁止出现图片) */
    .hero-section {
      padding: 80px 0 70px;
      text-align: center;
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.8) 0%, rgba(247, 249, 253, 0.95) 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 45, 96, 0.08);
      border: 1px solid rgba(255, 45, 96, 0.2);
      color: var(--accent);
      padding: 6px 18px;
      border-radius: 999px;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 24px;
      animation: floatBadge 3s ease-in-out infinite;
    }

    @keyframes floatBadge {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-4px); }
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--text-main);
      letter-spacing: -0.03em;
    }

    .hero-title-highlight {
      background: var(--gradient-brand);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 800px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

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

    .hero-highlight-btn {
      font-size: 1.1rem;
      padding: 14px 34px;
      border-radius: 10px;
      font-weight: 700;
      letter-spacing: 0.02em;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1020px;
      margin: 0 auto;
    }

    .hero-stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px 16px;
      box-shadow: var(--card-shadow);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .hero-stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover-shadow);
      border-color: rgba(92, 22, 229, 0.3);
    }

    .hero-stat-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .hero-stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 平台支持模型标签流 */
    .model-marquee-section {
      padding: 30px 0;
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
    }

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

    .model-tag {
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #334155;
      transition: all 0.2s ease;
    }

    .model-tag:hover {
      background: var(--gradient-brand);
      color: #ffffff;
      border-color: transparent;
      transform: scale(1.05);
    }

    /* 平台概况与核心能力 */
    .platform-overview-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .overview-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 32px 24px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .overview-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: var(--gradient-brand);
      opacity: 0;
      transition: opacity 0.3s;
    }

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

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

    .overview-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(92, 22, 229, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 20px;
    }

    .overview-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .overview-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

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

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover-shadow);
      border-color: rgba(92, 22, 229, 0.3);
    }

    .service-card-tag {
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 4px;
      background: rgba(92, 22, 229, 0.08);
      color: var(--primary);
      display: inline-block;
      margin-bottom: 12px;
      width: fit-content;
    }

    .service-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .service-card-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .service-card-footer {
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .service-card-link {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 流程与图文展示 */
    .process-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-bottom: 40px;
    }

    .step-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px 20px;
      position: relative;
    }

    .step-badge {
      font-size: 1.8rem;
      font-weight: 900;
      color: rgba(92, 22, 229, 0.15);
      position: absolute;
      top: 16px;
      right: 20px;
    }

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

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

    .media-showcase-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: stretch;
    }

    .media-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }

    .media-card .img-box {
      width: 100%;
      background: #f1f5f9;
      overflow: hidden;
    }

    .media-card img {
      width: 100%;
      height: auto;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .media-card:hover img {
      transform: scale(1.03);
    }

    .media-content {
      padding: 20px;
    }

    .media-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .media-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 对比评测版块 */
    .compare-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .rating-banner {
      background: linear-gradient(135deg, #1f1435 0%, #2f1754 100%);
      color: #fff;
      border-radius: 16px;
      padding: 30px 40px;
      margin-bottom: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

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

    .rating-stars {
      font-size: 2rem;
      color: var(--accent-yellow);
      letter-spacing: 2px;
    }

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

    .rating-score small {
      font-size: 1.1rem;
      font-weight: 500;
      color: rgba(255, 255, 255, 0.7);
    }

    .rating-meta h3 {
      font-size: 1.3rem;
      margin-bottom: 4px;
    }

    .rating-meta p {
      font-size: 0.9rem;
      color: rgba(255, 255, 255, 0.75);
    }

    .compare-table-wrapper {
      width: 100%;
      overflow-x: auto;
      border-radius: 12px;
      border: 1px solid var(--border-color);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
      background: #ffffff;
    }

    .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;
      color: var(--text-main);
      font-weight: 700;
    }

    .compare-table .highlight-col {
      background: rgba(92, 22, 229, 0.03);
      font-weight: 700;
      color: var(--primary);
    }

    /* 需求匹配与提交表单 */
    .match-form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: start;
    }

    .form-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--card-shadow);
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      background: #f8fafc;
      outline: none;
      transition: border-color 0.25s;
    }

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

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

    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 8px;
      cursor: pointer;
    }

    .form-side-info {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .side-info-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      box-shadow: var(--card-shadow);
    }

    .side-info-item h4 {
      font-size: 1.1rem;
      margin-bottom: 10px;
      color: var(--primary);
    }

    .side-info-item p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.93rem;
      color: #334155;
      line-height: 1.65;
      margin-bottom: 20px;
      font-style: italic;
    }

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

    .review-avatar-text {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--gradient-brand);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
    }

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

    .review-role {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0,0,0,0.02);
      transition: border-color 0.2s ease;
    }

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

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

    .faq-toggle-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
      background: #fafcff;
    }

    .faq-item.active .faq-answer {
      max-height: 500px;
      transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
    }

    .faq-answer-inner {
      padding: 0 24px 20px;
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 行业资讯与动态 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 22px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-badge {
      font-size: 0.75rem;
      font-weight: 700;
      color: #ff2d60;
      background: rgba(255, 45, 96, 0.08);
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
      width: fit-content;
    }

    .article-title {
      font-size: 1.05rem;
      font-weight: 700;
      line-height: 1.5;
      margin-bottom: 10px;
      color: var(--text-main);
    }

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

    .article-meta {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 宣传展示 Banner 区域 */
    .promo-banners-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 36px;
    }

    .banner-img-wrap {
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      background: #f1f5f9;
    }

    .banner-img-wrap img {
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    /* 加盟代理与被动收益专区 */
    .partner-cta-card {
      background: linear-gradient(135deg, #2b0f59 0%, #160a33 100%);
      color: #ffffff;
      border-radius: 16px;
      padding: 48px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .partner-title {
      font-size: 2.2rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .partner-desc {
      font-size: 1.05rem;
      color: rgba(255, 255, 255, 0.85);
      max-width: 680px;
      margin: 0 auto 30px;
      line-height: 1.6;
    }

    .partner-perks {
      display: flex;
      justify-content: center;
      gap: 30px;
      flex-wrap: wrap;
      margin-bottom: 36px;
    }

    .perk-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--accent-cyan);
    }

    /* 页脚 */
    .site-footer {
      background: #11141e;
      color: #cbd5e1;
      padding-top: 60px;
      padding-bottom: 30px;
      border-top: 1px solid #1e2433;
    }

    .footer-main-grid {
      display: grid;
      grid-template-columns: 2fr 1.2fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 18px;
    }

    .footer-about p {
      font-size: 0.9rem;
      line-height: 1.7;
      color: #94a3b8;
      margin-bottom: 16px;
    }

    .footer-contact-item {
      font-size: 0.9rem;
      color: #94a3b8;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-qr-card {
      display: inline-block;
      background: #1e2433;
      padding: 10px;
      border-radius: 8px;
      text-align: center;
    }

    .footer-qr-card img {
      width: 110px;
      height: 110px;
      object-fit: cover;
      margin-bottom: 6px;
      border-radius: 4px;
    }

    .footer-qr-card span {
      font-size: 0.8rem;
      color: #94a3b8;
      display: block;
    }

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

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

    .footer-links-list a {
      font-size: 0.9rem;
      color: #94a3b8;
    }

    .footer-links-list a:hover {
      color: #ffffff;
      padding-left: 4px;
    }

    .friend-links-box {
      border-top: 1px solid #1e2433;
      padding-top: 24px;
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .friend-links-label {
      font-size: 0.85rem;
      font-weight: 700;
      color: #94a3b8;
    }

    .friend-links-box a {
      font-size: 0.85rem;
      color: #64748b;
      margin-right: 8px;
    }

    .friend-links-box a:hover {
      color: var(--accent-cyan);
    }

    .footer-bottom {
      border-top: 1px solid #1e2433;
      padding-top: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服挂件 */
    .float-contact {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--gradient-brand);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(92, 22, 229, 0.4);
      cursor: pointer;
      position: relative;
      border: none;
      transition: transform 0.25s ease;
    }

    .float-btn:hover {
      transform: scale(1.1);
    }

    .float-btn svg {
      width: 24px;
      height: 24px;
      fill: currentColor;
    }

    .float-card-pop {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 16px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.15);
      display: none;
      width: 170px;
      text-align: center;
    }

    .float-card-pop img {
      width: 130px;
      height: 130px;
      margin: 0 auto 8px;
      border-radius: 6px;
    }

    .float-card-pop p {
      font-size: 0.8rem;
      color: var(--text-main);
      font-weight: 600;
    }

    .float-btn:hover .float-card-pop {
      display: block;
    }

    .back-to-top {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      display: none;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: var(--card-shadow);
      transition: all 0.2s;
    }

    .back-to-top:hover {
      background: #f1f5f9;
      color: var(--primary);
    }

    /* 响应式样式适配 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.3rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .platform-overview-grid {
        grid-template-columns: 1fr;
      }
      .service-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .media-showcase-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
      .match-form-grid {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: 1fr 1fr;
      }
      .promo-banners-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        position: relative;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 16px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li a {
        width: 100%;
        padding: 10px 14px;
      }
      .nav-toggle {
        display: block;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .hero-desc {
        font-size: 1rem;
      }
      .service-grid {
        grid-template-columns: 1fr;
      }
      .process-steps-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-main-grid {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        align-items: flex-start;
      }
      .partner-cta-card {
        padding: 30px 20px;
      }
      .partner-title {
        font-size: 1.6rem;
      }
    }