:root {
      --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --bg-body: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --primary: #4f46e5;
      --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #ec4899 100%);
      --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
      --warm-gradient: linear-gradient(135deg, #f59e0b 0%, #ef4444 50%, #ec4899 100%);
      --card-bg: rgba(255, 255, 255, 0.94);
      --card-border: rgba(226, 232, 240, 0.9);
      --card-shadow: 0 10px 30px -8px rgba(79, 70, 229, 0.08);
      --card-shadow-hover: 0 20px 40px -10px rgba(79, 70, 229, 0.16);
      --container-max: 1240px;
    }

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

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

    body {
      font-family: var(--font-base);
      background-color: var(--bg-body);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 10%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 20%, rgba(236, 72, 153, 0.07) 0%, transparent 45%),
        radial-gradient(circle at 50% 60%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 90%, rgba(245, 158, 11, 0.06) 0%, transparent 40%);
      background-attachment: fixed;
    }

    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;
    }

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

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

    .brand-group {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }

    .ai-page-home-link {
      font-weight: 600;
      color: var(--primary);
      padding: 6px 12px;
      border-radius: 8px;
      background: rgba(79, 70, 229, 0.08);
      font-size: 0.95rem;
    }

    .ai-page-home-link:hover {
      background: rgba(79, 70, 229, 0.16);
      transform: translateY(-1px);
    }

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

    .nav-links li a {
      font-size: 0.94rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 13px;
      border-radius: 6px;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(79, 70, 229, 0.05);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      border-radius: 10px;
      padding: 10px 22px;
      font-size: 0.95rem;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .btn-gradient {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    }

    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border-color: #cbd5e1;
    }

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

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

    /* 首屏 Hero (严禁出现图片) */
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
      text-align: center;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(90deg, rgba(79, 70, 229, 0.08), rgba(236, 72, 153, 0.08));
      border: 1px solid rgba(79, 70, 229, 0.2);
      border-radius: 999px;
      padding: 6px 18px;
      margin-bottom: 24px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--primary);
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      box-shadow: 0 0 10px #10b981;
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 22px;
      color: #0f172a;
      letter-spacing: -0.02em;
    }

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

    .hero-subtitle {
      font-size: 1.22rem;
      color: var(--text-muted);
      max-width: 840px;
      margin: 0 auto 34px;
      line-height: 1.7;
    }

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

    .hero-cta-main {
      padding: 14px 34px;
      font-size: 1.1rem;
      border-radius: 12px;
      background: var(--primary-gradient);
      color: #fff;
      font-weight: 700;
      box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
    }

    .hero-cta-main:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 30px rgba(79, 70, 229, 0.45);
      color: #fff;
    }

    .hero-cta-sub {
      padding: 14px 30px;
      font-size: 1.1rem;
      border-radius: 12px;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1040px;
      margin: 0 auto;
    }

    .stat-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 24px 18px;
      box-shadow: var(--card-shadow);
      position: relative;
      overflow: hidden;
      transition: transform 0.3s ease;
    }

    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--primary-gradient);
    }

    .stat-card:hover {
      transform: translateY(-4px);
    }

    .stat-val {
      font-size: 2.1rem;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .stat-desc {
      font-size: 0.9rem;
      color: var(--text-light);
      font-weight: 500;
    }

    /* Section 通用 */
    .section-block {
      padding: 72px 0;
    }

    .section-header {
      text-align: center;
      margin-bottom: 46px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.86rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: var(--primary);
      background: rgba(79, 70, 229, 0.08);
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 10px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.01em;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1.06rem;
      color: var(--text-muted);
      max-width: 700px;
      margin: 0 auto;
    }

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

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .feature-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: 18px;
      padding: 30px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--card-shadow-hover);
      border-color: rgba(99, 102, 241, 0.4);
    }

    .card-icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      color: #ffffff;
      margin-bottom: 20px;
      flex-shrink: 0;
    }

    .icon-p1 { background: var(--primary-gradient); }
    .icon-p2 { background: var(--accent-gradient); }
    .icon-p3 { background: var(--warm-gradient); }

    .card-title {
      font-size: 1.28rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 12px;
    }

    .card-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: auto;
    }

    .card-tag-pill {
      font-size: 0.78rem;
      font-weight: 600;
      color: #4338ca;
      background: #eef2ff;
      padding: 3px 10px;
      border-radius: 6px;
    }

    /* 模型生态流光面板 */
    .model-matrix-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 20px;
      padding: 36px;
      box-shadow: var(--card-shadow);
      text-align: center;
    }

    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 24px;
    }

    .model-pill {
      background: #f1f5f9;
      color: #1e293b;
      padding: 8px 16px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      border: 1px solid #e2e8f0;
      transition: all 0.2s ease;
    }

    .model-pill:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    }

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

    .step-card {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 26px 20px;
      box-shadow: var(--card-shadow);
      position: relative;
    }

    .step-badge {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: var(--primary-gradient);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }

    .step-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }

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

    /* 对比评测表格 */
    .eval-highlight-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #eef2ff 0%, #fae8ff 100%);
      border: 1px solid #c7d2fe;
      border-radius: 18px;
      padding: 28px 36px;
      margin-bottom: 28px;
    }

    .eval-score-num {
      font-size: 3.2rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .eval-star-row {
      color: #f59e0b;
      font-size: 1.4rem;
      margin-bottom: 6px;
    }

    .eval-table-container {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 16px;
      overflow-x: auto;
      box-shadow: var(--card-shadow);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 0.94rem;
    }

    .eval-table th {
      background: #f8fafc;
      color: #0f172a;
      font-weight: 700;
    }

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

    .table-our {
      background: #fbfbfe;
      font-weight: 700;
      color: var(--primary);
    }

    .badge-win {
      display: inline-block;
      padding: 2px 8px;
      background: #dcfce7;
      color: #15803d;
      border-radius: 4px;
      font-size: 0.78rem;
      font-weight: 700;
      margin-left: 6px;
    }

    /* 案例展示区（带图） */
    .case-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: transform 0.3s ease;
    }

    .case-card:hover {
      transform: translateY(-4px);
    }

    .case-img-container {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #e2e8f0;
    }

    .case-img-container.square-box {
      aspect-ratio: 1 / 1;
    }

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

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

    .case-body {
      padding: 20px;
    }

    .case-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 6px;
    }

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

    /* 宣传图 Banner */
    .banner-wrapper {
      margin: 40px 0 20px;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 16px 36px rgba(15, 23, 42, 0.1);
      border: 1px solid var(--card-border);
    }

    .banner-wrapper img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 用户评论 */
    .comment-card {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 26px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .comment-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .comment-avatar-char {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--accent-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
      flex-shrink: 0;
    }

    .comment-author-name {
      font-size: 1rem;
      font-weight: 700;
      color: #0f172a;
    }

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

    .comment-quote {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      font-style: italic;
    }

    /* FAQ 手风琴 */
    .faq-list {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 14px;
      overflow: hidden;
      box-shadow: 0 2px 10px 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;
      color: #0f172a;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fbfcfd;
      color: var(--text-muted);
      font-size: 0.94rem;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 240px;
      padding: 0 24px 20px;
      border-top: 1px solid #f1f5f9;
    }

    /* 需求匹配与联系表单 */
    .contact-container {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 24px;
      box-shadow: var(--card-shadow);
      padding: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: #1e293b;
      margin-bottom: 8px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: 10px;
      font-size: 0.95rem;
      color: #0f172a;
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
      background: #f8fafc;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
      background: #ffffff;
    }

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

    .contact-info-panel {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background: linear-gradient(145deg, #f8fafc 0%, #eef2ff 100%);
      padding: 30px;
      border-radius: 18px;
      border: 1px solid #e0e7ff;
    }

    .contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 24px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: #334155;
    }

    .contact-item strong {
      color: #0f172a;
    }

    .qrcode-box {
      text-align: center;
      background: #ffffff;
      padding: 16px;
      border-radius: 14px;
      border: 1px solid #cbd5e1;
      max-width: 180px;
      margin: 0 auto;
    }

    .qrcode-box img {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      display: block;
      margin-bottom: 8px;
    }

    .qrcode-box p {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* 资讯与百科 */
    .article-box {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 26px;
      box-shadow: var(--card-shadow);
    }

    .article-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 14px;
    }

    .article-links-list a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 14px;
      background: #f8fafc;
      border-radius: 8px;
      font-size: 0.9rem;
      color: var(--text-muted);
      border: 1px solid #edf2f7;
    }

    .article-links-list a:hover {
      background: #eef2ff;
      color: var(--primary);
      border-color: #c7d2fe;
    }

    /* 友情链接与页脚 */
    .friend-links-box {
      padding: 24px 0;
      border-top: 1px solid #e2e8f0;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.88rem;
    }

    .friend-links-box span {
      font-weight: 700;
      color: #334155;
    }

    .friend-links-box a {
      color: #64748b;
      padding: 4px 10px;
      background: #ffffff;
      border-radius: 6px;
      border: 1px solid #e2e8f0;
    }

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

    .site-footer {
      background: #ffffff;
      border-top: 1px solid #e2e8f0;
      padding: 40px 0 24px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 30px;
    }

    .footer-brand-desc {
      margin-top: 14px;
      max-width: 400px;
      font-size: 0.88rem;
      color: var(--text-light);
      line-height: 1.6;
    }

    .footer-col h4 {
      font-size: 1rem;
      color: #0f172a;
      margin-bottom: 14px;
      font-weight: 700;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col ul a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #f1f5f9;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.84rem;
      color: var(--text-light);
    }

    /* 浮动客服 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--card-border);
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      font-size: 1.2rem;
      transition: all 0.25s ease;
      position: relative;
    }

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

    .float-qr-pop {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      width: 140px;
      background: #ffffff;
      padding: 10px;
      border-radius: 10px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.15);
      border: 1px solid #e2e8f0;
      text-align: center;
    }

    .float-qr-pop img {
      width: 100%;
      height: auto;
      border-radius: 6px;
    }

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

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.4rem; }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .workflow-steps { grid-template-columns: repeat(2, 1fr); }
      .contact-container { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .site-header { height: auto; }
      .nav-wrap { height: 68px; }
      .menu-toggle { display: block; }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--card-border);
        padding: 16px 24px;
        gap: 8px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
      }
      .nav-links.open { display: flex; }
      .hero-title { font-size: 2rem; }
      .hero-subtitle { font-size: 1.05rem; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
      .workflow-steps { grid-template-columns: 1fr; }
      .eval-highlight-box { flex-direction: column; text-align: center; gap: 16px; }
      .footer-grid { grid-template-columns: 1fr; }
    }