:root {
      --primary: #5c3cf6;
      --primary-hover: #4829e0;
      --candy-pink: #ff4b82;
      --candy-mint: #00c9a7;
      --candy-yellow: #ffb703;
      --candy-orange: #fb8500;
      --candy-cyan: #06b6d4;
      --bg-page: #fbf9fe;
      --bg-card: #ffffff;
      --text-main: #18192b;
      --text-muted: #5e6479;
      --border-color: #efe8fa;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-pill: 999px;
      --shadow-sm: 0 4px 12px rgba(92, 60, 246, 0.06);
      --shadow-md: 0 10px 28px rgba(92, 60, 246, 0.09);
      --shadow-hover: 0 16px 36px rgba(92, 60, 246, 0.15);
      --container-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, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 8%, rgba(255, 75, 130, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 12%, rgba(0, 201, 167, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, rgba(92, 60, 246, 0.04) 0%, transparent 60%),
        radial-gradient(circle at 80% 85%, rgba(255, 183, 3, 0.07) 0%, transparent 40%);
      background-attachment: fixed;
    }

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

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }

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

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

    .logo-container {
      width: 130px;
      height: 42px;
      display: flex;
      align-items: center;
      justify-content: flex-start;
      overflow: hidden;
    }

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

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

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-pill);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(92, 60, 246, 0.08);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      border: 2px solid transparent;
      cursor: pointer;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
      white-space: nowrap;
    }

    .btn:active {
      transform: scale(0.98);
    }

    .btn-candy {
      background: linear-gradient(135deg, var(--candy-pink), var(--primary));
      color: #ffffff !important;
      box-shadow: 0 6px 16px rgba(92, 60, 246, 0.3);
    }

    .btn-candy:hover {
      box-shadow: 0 8px 22px rgba(255, 75, 130, 0.4);
      transform: translateY(-2px);
    }

    .btn-candy-mint {
      background: linear-gradient(135deg, var(--candy-mint), #0284c7);
      color: #ffffff !important;
      box-shadow: 0 6px 16px rgba(0, 201, 167, 0.3);
    }

    .btn-candy-mint:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(0, 201, 167, 0.4);
    }

    .btn-outline {
      background: #ffffff;
      border-color: #ded6f5;
      color: var(--primary);
    }

    .btn-outline:hover {
      background: #f5f0ff;
      border-color: var(--primary);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-menu-btn svg {
      width: 28px;
      height: 28px;
      stroke: var(--text-main);
    }

    /* 模块通用样式 */
    section {
      padding: 84px 0;
      position: relative;
    }

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

    .section-tag {
      display: inline-block;
      padding: 6px 16px;
      font-size: 0.85rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      color: var(--primary);
      background: rgba(92, 60, 246, 0.1);
      border-radius: var(--radius-pill);
      margin-bottom: 14px;
      border: 1px solid rgba(92, 60, 246, 0.2);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 Hero 无图片要求 */
    .hero-section {
      padding: 90px 0 80px 0;
      position: relative;
      overflow: hidden;
    }

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

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: var(--radius-pill);
      background: #ffffff;
      border: 1px solid #ffd1e0;
      box-shadow: 0 4px 14px rgba(255, 75, 130, 0.12);
      font-size: 0.88rem;
      color: var(--candy-pink);
      font-weight: 700;
      margin-bottom: 24px;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--candy-pink);
      box-shadow: 0 0 8px var(--candy-pink);
    }

    .hero-title {
      font-size: 3.1rem;
      font-weight: 900;
      line-height: 1.25;
      color: #121324;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }

    .hero-title-highlight {
      background: linear-gradient(120deg, #ff4b82, #5c3cf6 60%, #00c9a7);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px auto;
      line-height: 1.8;
    }

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

    .btn-hero-main {
      font-size: 1.15rem;
      padding: 16px 38px;
      background: linear-gradient(135deg, #ff4b82, #5c3cf6);
      color: #ffffff;
      border-radius: var(--radius-pill);
      box-shadow: 0 10px 28px rgba(92, 60, 246, 0.35);
      font-weight: 700;
    }

    .btn-hero-main:hover {
      box-shadow: 0 14px 34px rgba(255, 75, 130, 0.45);
      transform: translateY(-3px);
    }

    .btn-hero-sub {
      font-size: 1.05rem;
      padding: 15px 30px;
      border-radius: var(--radius-pill);
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid #dfd8f5;
      box-shadow: var(--shadow-sm);
      font-weight: 600;
    }

    .btn-hero-sub:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    .hero-tags-wall {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 820px;
      margin: 0 auto;
    }

    .candy-chip {
      padding: 6px 14px;
      border-radius: var(--radius-pill);
      font-size: 0.85rem;
      font-weight: 600;
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--text-muted);
      transition: all 0.2s ease;
    }

    .candy-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    /* 数据指标卡片 */
    .metrics-bar {
      margin-top: 50px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .metric-card {
      text-align: center;
      position: relative;
    }

    .metric-card:not(:last-child)::after {
      content: '';
      position: absolute;
      right: 0;
      top: 15%;
      height: 70%;
      width: 1px;
      background: var(--border-color);
    }

    .metric-number {
      font-size: 2.3rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
    }

    .metric-number span {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--candy-pink);
    }

    .metric-label {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 卡片通用网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
      align-items: center;
    }

    .candy-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .candy-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(92, 60, 246, 0.3);
    }

    .card-icon {
      width: 54px;
      height: 54px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-weight: bold;
    }

    .card-icon svg {
      width: 28px;
      height: 28px;
    }

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

    .card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .card-badge {
      display: inline-block;
      align-self: flex-start;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: var(--radius-pill);
      background: #f1edfe;
      color: var(--primary);
    }

    /* 平台模型支持展示区 */
    .models-stream {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-top: 36px;
    }

    .model-pill {
      background: #ffffff;
      padding: 10px 18px;
      border-radius: var(--radius-pill);
      border: 1px solid #f0e6ff;
      box-shadow: 0 2px 8px rgba(92, 60, 246, 0.04);
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      font-size: 0.9rem;
      color: #333652;
    }

    .model-pill-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--candy-mint);
    }

    /* 评测与对比表格 */
    .rating-highlight-card {
      background: linear-gradient(135deg, #ffffff, #faf7ff);
      border: 2px solid #ede3ff;
      border-radius: var(--radius-lg);
      padding: 36px;
      margin-bottom: 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: var(--shadow-md);
      flex-wrap: wrap;
      gap: 24px;
    }

    .rating-info h3 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .rating-stars {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-top: 10px;
    }

    .star {
      color: #ffb703;
      font-size: 1.4rem;
    }

    .score-badge-huge {
      background: linear-gradient(135deg, var(--candy-pink), var(--primary));
      color: #ffffff;
      padding: 18px 36px;
      border-radius: var(--radius-lg);
      text-align: center;
      box-shadow: 0 8px 24px rgba(255, 75, 130, 0.3);
    }

    .score-val {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1;
    }

    .score-total {
      font-size: 1rem;
      opacity: 0.9;
      font-weight: 600;
      margin-top: 4px;
    }

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

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 720px;
    }

    .comparison-table th, 
    .comparison-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }

    .comparison-table th {
      background: #fbf9ff;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .comparison-table tr:hover td {
      background: #fbfaff;
    }

    .col-highlight {
      background: rgba(92, 60, 246, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    .badge-check {
      color: var(--candy-mint);
      font-weight: 800;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .badge-cross {
      color: #a0aec0;
    }

    /* 流程步骤 */
    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 22px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--candy-pink));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 18px;
    }

    .step-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

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

    /* 案例展示图片区 */
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .media-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }

    .media-img-wrapper {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #f0f0f5;
    }

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

    .media-img-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .media-card:hover .media-img-wrapper img {
      transform: scale(1.04);
    }

    .media-card-body {
      padding: 24px;
    }

    .media-card-title {
      font-size: 1.18rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .media-card-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 宣传图画廊 */
    .banner-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 36px;
    }

    .banner-item {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      background: #ffffff;
      transition: transform 0.3s ease;
    }

    .banner-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .banner-item img {
      width: 100%;
      height: 220px;
      object-fit: cover;
    }

    /* FAQ 手风琴面板 */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: border-color 0.25s ease;
    }

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

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }

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

    .faq-icon {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: #f1edfe;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
      background: var(--primary);
      color: #ffffff;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 400px;
      padding-bottom: 22px;
      transition: max-height 0.35s ease-in, padding 0.3s ease;
    }

    /* 用户评论 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }

    .review-card::before {
      content: '“';
      position: absolute;
      top: 16px;
      right: 24px;
      font-size: 4rem;
      line-height: 1;
      color: rgba(92, 60, 246, 0.08);
      font-family: Georgia, serif;
    }

    .review-text {
      font-size: 0.96rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 22px;
      position: relative;
      z-index: 1;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid #f6f2fd;
      padding-top: 16px;
    }

    .author-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ffd1e0, #ded4fd);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--primary);
      font-size: 1.1rem;
    }

    .author-name {
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-main);
    }

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

    /* 表单与联系区 */
    .contact-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 48px;
    }

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

    .form-label {
      display: block;
      font-size: 0.92rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 13px 18px;
      border: 1px solid #ded6f5;
      border-radius: var(--radius-md);
      font-size: 0.95rem;
      background: #faf8ff;
      color: var(--text-main);
      transition: all 0.25s ease;
      outline: none;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(92, 60, 246, 0.12);
    }

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

    .contact-info-panel {
      background: #fbf9ff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 24px;
    }

    .contact-list-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
    }

    .contact-list-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: #ede6fd;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .qr-container {
      text-align: center;
      background: #ffffff;
      padding: 18px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .qr-box {
      width: 140px;
      height: 140px;
      margin: 0 auto 10px auto;
      overflow: hidden;
      border-radius: var(--radius-sm);
    }

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

    .qr-tip {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 行业资讯文章列表 */
    .article-links-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 30px;
    }

    .article-list {
      list-style: none;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .article-item a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 18px;
      background: #faf8ff;
      border-radius: var(--radius-md);
      border: 1px solid #f0eafc;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-main);
    }

    .article-item a:hover {
      background: #f1ecfe;
      color: var(--primary);
      border-color: var(--primary);
      transform: translateX(4px);
    }

    /* 友情链接与页脚 */
    .friend-links-box {
      padding: 24px 0;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      margin-bottom: 40px;
    }

    .friend-links-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 14px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-list a {
      font-size: 0.88rem;
      color: var(--text-muted);
      background: #f5f1fd;
      padding: 6px 14px;
      border-radius: var(--radius-pill);
      border: 1px solid transparent;
    }

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

    .site-footer {
      background: #18192b;
      color: #a0aec0;
      padding: 60px 0 30px 0;
      font-size: 0.9rem;
    }

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

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.3rem;
      margin-bottom: 14px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 18px;
      font-weight: 700;
    }

    .footer-nav {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

    .footer-bottom {
      border-top: 1px solid #2d3748;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #718096;
    }

    /* 悬浮客服面板 */
    .float-panel {
      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: #ffffff;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      position: relative;
      transition: all 0.25s ease;
    }

    .float-btn:hover {
      transform: scale(1.1);
      background: var(--primary);
      color: #ffffff;
    }

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

    .float-qr-pop {
      position: absolute;
      right: 64px;
      bottom: 0;
      background: #ffffff;
      padding: 16px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-color);
      width: 170px;
      display: none;
      text-align: center;
    }

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

    .float-qr-pop img {
      width: 100%;
      height: auto;
      border-radius: 4px;
      margin-bottom: 8px;
    }

    .float-qr-pop span {
      font-size: 0.8rem;
      color: var(--text-main);
      font-weight: 600;
      display: block;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .grid-4, .steps-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .testimonials-grid, .banner-gallery {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 30px;
      }
      .metric-card:nth-child(2)::after {
        display: none;
      }
      .hero-title {
        font-size: 2.5rem;
      }
    }

    @media (max-width: 768px) {
      .site-header {
        position: relative;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 12px;
      }
      .hero-title {
        font-size: 2rem;
      }
      .grid-3, .grid-4, .grid-2, .steps-container, .testimonials-grid, .banner-gallery, .metrics-bar, .article-list, .contact-wrapper, .footer-content {
        grid-template-columns: 1fr;
      }
      .contact-wrapper {
        padding: 24px;
      }
      .rating-highlight-card {
        flex-direction: column;
        text-align: center;
      }
      .rating-stars {
        justify-content: center;
      }
      .metric-card::after {
        display: none !important;
      }
    }