:root {
      --primary: #4338ca;
      --primary-light: #6366f1;
      --secondary: #0ea5e9;
      --accent-coral: #f43f5e;
      --accent-amber: #f59e0b;
      --accent-emerald: #10b981;
      --accent-purple: #8b5cf6;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-soft: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --border-focus: #c7d2fe;
      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(67, 56, 202, 0.08), 0 8px 10px -6px rgba(14, 165, 233, 0.05);
      --shadow-lg: 0 20px 35px -10px rgba(67, 56, 202, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      background-image: radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.05) 0, transparent 50%),
                        radial-gradient(at 100% 10%, rgba(14, 165, 233, 0.05) 0, transparent 50%),
                        radial-gradient(at 50% 100%, rgba(244, 63, 94, 0.03) 0, transparent 50%);
      background-attachment: fixed;
    }

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 斑斓色彩标签与标头通用 */
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: 9999px;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(14, 165, 233, 0.12));
      color: var(--primary);
      border: 1px solid rgba(99, 102, 241, 0.2);
      margin-bottom: 14px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }

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

    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }

    .page-section {
      padding: 72px 0;
      position: relative;
    }

    /* 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);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }

    .nav-container {
      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;
      display: block;
      object-fit: contain;
    }

    .brand-meta {
      display: flex;
      flex-direction: column;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1.2;
    }

    .brand-tag {
      font-size: 0.72rem;
      color: var(--text-light);
      font-weight: 500;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* 严格要求 gap 为 0 */
    }

    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(99, 102, 241, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .btn-gradient {
      background: linear-gradient(135deg, #4f46e5, #0ea5e9);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
    }

    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.35);
      color: #ffffff;
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--primary);
      border: 1px solid #cbd5e1;
    }

    .btn-secondary:hover {
      border-color: var(--primary);
      background: #f8fafc;
    }

    .btn-rainbow {
      background: linear-gradient(135deg, #f43f5e, #8b5cf6, #0ea5e9);
      color: #ffffff;
      box-shadow: 0 4px 16px rgba(244, 63, 94, 0.3);
      font-weight: 700;
    }

    .btn-rainbow:hover {
      filter: brightness(1.08);
      transform: translateY(-2px);
      color: #ffffff;
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
      padding: 6px;
    }

    /* 首屏 HERO 区域（严格无图片） */
    .hero-section {
      padding: 84px 0 72px 0;
      position: relative;
      background: linear-gradient(180deg, rgba(238, 242, 255, 0.6) 0%, rgba(248, 250, 252, 0.8) 100%);
      border-bottom: 1px solid var(--border-color);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 2.55rem;
      font-weight: 900;
      line-height: 1.25;
      color: #1e1b4b;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-gradient-text {
      background: linear-gradient(135deg, #4338ca 0%, #0284c7 50%, #db2777 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.12rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 30px;
    }

    .hero-features-inline {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 34px;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #334155;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.02);
    }

    .hero-pill-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
    }

    .hero-pill-dot.p-blue { background-color: #0284c7; }
    .hero-pill-dot.p-pink { background-color: #ec4899; }
    .hero-pill-dot.p-amber { background-color: #f59e0b; }
    .hero-pill-dot.p-emerald { background-color: #10b981; }

    .hero-btn-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
    }

    /* 首屏纯CSS纯代码展示卡片 */
    .hero-visual-board {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid #e2e8f0;
      box-shadow: 0 25px 50px -12px rgba(67, 56, 202, 0.15);
      padding: 28px;
      position: relative;
    }

    .board-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #f1f5f9;
      padding-bottom: 16px;
      margin-bottom: 20px;
    }

    .board-dots {
      display: flex;
      gap: 6px;
    }

    .b-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .b-dot-1 { background-color: #f43f5e; }
    .b-dot-2 { background-color: #f59e0b; }
    .b-dot-3 { background-color: #10b981; }

    .board-chip {
      font-size: 0.78rem;
      font-weight: 700;
      color: #4338ca;
      background: #eef2ff;
      padding: 4px 10px;
      border-radius: 6px;
    }

    .board-stats-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 20px;
    }

    .board-stat-item {
      padding: 14px;
      border-radius: var(--radius-md);
      background: #f8fafc;
      border-left: 4px solid var(--primary);
    }

    .board-stat-item.accent-cyan { border-left-color: var(--secondary); }
    .board-stat-item.accent-coral { border-left-color: var(--accent-coral); }
    .board-stat-item.accent-amber { border-left-color: var(--accent-amber); }

    .board-stat-label {
      font-size: 0.78rem;
      color: var(--text-light);
      font-weight: 500;
    }

    .board-stat-value {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-top: 2px;
    }

    .board-code-mock {
      background: #0f172a;
      border-radius: var(--radius-md);
      padding: 16px;
      font-family: SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      font-size: 0.8rem;
      color: #94a3b8;
      line-height: 1.6;
    }

    .board-code-mock .c-green { color: #34d399; }
    .board-code-mock .c-purple { color: #c084fc; }
    .board-code-mock .c-cyan { color: #38bdf8; }
    .board-code-mock .c-yellow { color: #fde047; }

    /* 通用网格与卡片 */
    .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;
    }

    .card-item {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
      display: flex;
      flex-direction: column;
    }

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

    .card-icon {
      width: 50px;
      height: 50px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 18px;
      background: #eef2ff;
      color: var(--primary);
    }

    .card-icon.coral { background: #ffe4e6; color: #f43f5e; }
    .card-icon.cyan { background: #e0f2fe; color: #0ea5e9; }
    .card-icon.amber { background: #fef3c7; color: #d97706; }
    .card-icon.emerald { background: #d1fae5; color: #059669; }
    .card-icon.purple { background: #ede9fe; color: #7c3aed; }

    .card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .card-meta {
      margin-top: 14px;
      padding-top: 12px;
      border-top: 1px dashed var(--border-color);
      font-size: 0.82rem;
      color: var(--text-light);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 支持模型标签云 */
    .model-badge-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-tag {
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      font-size: 0.88rem;
      font-weight: 600;
      color: #1e293b;
      box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
      transition: all 0.2s ease;
    }

    .model-tag:hover {
      background: #4338ca;
      color: #ffffff;
      border-color: #4338ca;
      transform: translateY(-2px);
    }

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

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

    .step-number {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
      font-size: 1rem;
    }

    /* 对比评测高亮板块 */
    .review-score-banner {
      background: linear-gradient(135deg, #312e81, #1e1b4b);
      border-radius: var(--radius-lg);
      color: #ffffff;
      padding: 36px;
      margin-bottom: 36px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      box-shadow: var(--shadow-lg);
    }

    .score-left h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: #ffffff;
    }

    .score-left p {
      color: #c7d2fe;
      font-size: 0.98rem;
      max-width: 600px;
    }

    .score-badge-area {
      display: flex;
      align-items: center;
      gap: 20px;
      background: rgba(255, 255, 255, 0.08);
      padding: 16px 28px;
      border-radius: 16px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .star-display {
      color: #fbbf24;
      font-size: 1.6rem;
      letter-spacing: 2px;
      margin-bottom: 4px;
    }

    .rating-num {
      font-size: 2.8rem;
      font-weight: 900;
      color: #38bdf8;
      line-height: 1;
    }

    .rating-total {
      font-size: 1.1rem;
      color: #cbd5e1;
    }

    /* 对比评测表格 */
    .compare-table-container {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 760px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 0.92rem;
    }

    .compare-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
    }

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

    .compare-table .highlight-col {
      background: rgba(99, 102, 241, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

    .tag-check {
      display: inline-flex;
      align-items: center;
      color: #059669;
      font-weight: 700;
    }

    .tag-cross {
      display: inline-flex;
      align-items: center;
      color: #94a3b8;
    }

    /* 素材图片图文混合展示区（Hero外正常渲染） */
    .media-showcase-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      align-items: stretch;
      margin-top: 32px;
    }

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

    .media-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #f1f5f9;
    }

    .media-img-wrap.square {
      aspect-ratio: 1 / 1;
      max-height: 260px;
    }

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

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

    .media-content {
      padding: 20px;
    }

    /* 宣传图画廊展示 */
    .banner-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 28px;
    }

    .banner-gallery-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
    }

    .banner-gallery-item img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.3s ease;
    }

    .banner-gallery-item:hover img {
      transform: scale(1.02);
    }

    /* 表单与需求匹配 */
    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 36px;
      max-width: 860px;
      margin: 0 auto;
    }

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

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group.full {
      grid-column: 1 / -1;
    }

    .form-label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      background: #f8fafc;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .form-control:focus {
      border-color: var(--primary-light);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

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

    /* 用户评论 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .review-stars {
      color: #f59e0b;
      margin-bottom: 12px;
      font-size: 0.95rem;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
    }

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

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
    }

    .author-info h4 {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-info p {
      font-size: 0.78rem;
      color: var(--text-light);
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 920px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-header {
      padding: 18px 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-main);
      user-select: none;
    }

    .faq-header:hover {
      background: #f8fafc;
      color: var(--primary);
    }

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

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

    .faq-body {
      padding: 0 22px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: var(--text-muted);
      font-size: 0.94rem;
      line-height: 1.65;
    }

    .faq-item.active .faq-body {
      padding: 0 22px 20px 22px;
      max-height: 250px;
    }

    /* 文章列表 & 资讯 */
    .article-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .article-card-link {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 20px;
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      font-size: 0.92rem;
      font-weight: 600;
    }

    .article-card-link:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateX(4px);
    }

    .article-feed-area {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 24px;
    }

    /* 算力与加盟代理 */
    .agent-box {
      background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
      border: 1px solid #bbf7d0;
      border-radius: var(--radius-lg);
      padding: 36px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
      align-items: center;
    }

    .agent-perks {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 20px;
    }

    .perk-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.92rem;
      font-weight: 600;
      color: #166534;
    }

    /* 联系我们 */
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 32px;
      align-items: center;
    }

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-card {
      background: #ffffff;
      padding: 18px 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .contact-qr-wrapper {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 28px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .qr-box {
      width: 180px;
      height: 180px;
      margin: 0 auto 16px auto;
      border: 1px solid #e2e8f0;
      padding: 8px;
      border-radius: 12px;
      background: #ffffff;
    }

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

    /* 友情链接与页脚规范 */
    .footer-section {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.3rem;
      margin-bottom: 12px;
      font-weight: 800;
    }

    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.6;
      color: #94a3b8;
    }

    .footer-links-col h5 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 16px;
      font-weight: 700;
    }

    .footer-links-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.88rem;
    }

    .footer-links-list a:hover {
      color: #38bdf8;
    }

    .friend-links-box {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.88rem;
      color: #cbd5e1;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .friend-links-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.84rem;
    }

    .friend-links-group a {
      color: #94a3b8;
    }

    .friend-links-group a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 悬浮客服挂件与返回顶部 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
      border: 1px solid var(--border-color);
      cursor: pointer;
      transition: all 0.25s ease;
      font-size: 1.1rem;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-3px);
    }

    /* 响应式断点 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-list {
        grid-template-columns: repeat(2, 1fr);
      }
      .review-grid {
        grid-template-columns: 1fr;
      }
      .agent-box {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .banner-gallery {
        grid-template-columns: 1fr;
      }
      .media-showcase-grid {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 12px 16px;
      }
      .mobile-menu-toggle {
        display: block;
      }
    }

    @media (max-width: 640px) {
      .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .step-list {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 1.85rem;
      }
      .board-stats-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }