:root {
      --bg-primary: #0a0618;
      --bg-secondary: #120b2e;
      --bg-card: rgba(26, 16, 61, 0.7);
      --bg-card-hover: rgba(38, 24, 90, 0.85);
      --border-color: rgba(236, 72, 153, 0.25);
      --border-bright: #ec4899;
      --accent-pink: #ec4899;
      --accent-purple: #a855f7;
      --accent-cyan: #06b6d4;
      --text-main: #f8fafc;
      --text-muted: #cbd5e1;
      --text-sub: #94a3b8;
      --gradient-brand: linear-gradient(135deg, #ec4899 0%, #a855f7 50%, #6366f1 100%);
      --gradient-btn: linear-gradient(90deg, #ec4899 0%, #8b5cf6 100%);
      --glow-pink: 0 0 25px rgba(236, 72, 153, 0.45);
      --glow-purple: 0 0 35px rgba(168, 85, 247, 0.35);
      --container-width: 1240px;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      background-color: var(--bg-primary);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(236, 72, 153, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 85% 65%, rgba(168, 85, 247, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 50% 90%, rgba(6, 182, 212, 0.08) 0%, transparent 40%);
      background-attachment: fixed;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-smooth);
    }

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 6, 24, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(236, 72, 153, 0.2);
    }

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

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

    .brand-logo-wrap {
      max-width: 160px;
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-link {
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
      transition: var(--transition-smooth);
    }

    .nav-link:hover, .nav-link.active {
      color: #fff;
      text-shadow: 0 0 10px rgba(236, 72, 153, 0.6);
      background: rgba(236, 72, 153, 0.1);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 9999px;
      cursor: pointer;
      border: none;
      transition: var(--transition-smooth);
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--gradient-btn);
      color: #fff;
      box-shadow: var(--glow-pink);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 30px rgba(236, 72, 153, 0.7);
    }

    .btn-outline {
      background: transparent;
      color: #fff;
      border: 1px solid var(--border-bright);
    }

    .btn-outline:hover {
      background: rgba(236, 72, 153, 0.15);
      box-shadow: 0 0 15px rgba(236, 72, 153, 0.3);
    }

    .btn-lg {
      padding: 14px 34px;
      font-size: 1.1rem;
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      color: #fff;
      font-size: 1.5rem;
      cursor: pointer;
    }

    /* 区域通用样式 */
    .section {
      padding: 85px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 55px;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      border-radius: 9999px;
      background: rgba(236, 72, 153, 0.15);
      border: 1px solid rgba(236, 72, 153, 0.4);
      color: var(--accent-pink);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 16px;
      background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    /* 首屏 Hero */
    .hero-section {
      padding: 90px 0 70px;
      text-align: center;
      position: relative;
    }

    .hero-content {
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(168, 85, 247, 0.15);
      border: 1px solid rgba(168, 85, 247, 0.4);
      padding: 6px 18px;
      border-radius: 9999px;
      color: #d8b4fe;
      font-size: 0.9rem;
      margin-bottom: 24px;
      box-shadow: 0 0 20px rgba(168, 85, 247, 0.2);
    }

    .hero-tag-dot {
      width: 8px;
      height: 8px;
      background: #ec4899;
      border-radius: 50%;
      box-shadow: 0 0 10px #ec4899;
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.3); }
    }

    .hero-title {
      font-size: 3.2rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }

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

    .hero-desc {
      font-size: 1.25rem;
      color: var(--text-muted);
      max-width: 800px;
      margin: 0 auto 36px;
      line-height: 1.75;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }

    .stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      padding: 24px 16px;
      border-radius: var(--radius-md);
      backdrop-filter: blur(8px);
      transition: var(--transition-smooth);
    }

    .stat-card:hover {
      transform: translateY(-4px);
      border-color: var(--accent-pink);
      box-shadow: var(--glow-pink);
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: #fff;
      background: var(--gradient-btn);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    /* 模型矩阵展示 */
    .model-pills {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 30px;
    }

    .model-pill {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      color: #e2e8f0;
      transition: var(--transition-smooth);
    }

    .model-pill:hover {
      background: rgba(236, 72, 153, 0.2);
      border-color: var(--accent-pink);
      transform: scale(1.05);
    }

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

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

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

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: var(--transition-smooth);
      position: relative;
      overflow: hidden;
    }

    .card:hover {
      background: var(--bg-card-hover);
      border-color: var(--accent-pink);
      transform: translateY(-5px);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), var(--glow-pink);
    }

    .card-icon {
      width: 48px;
      height: 48px;
      background: rgba(236, 72, 153, 0.15);
      border: 1px solid rgba(236, 72, 153, 0.4);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-pink);
      font-size: 1.4rem;
      margin-bottom: 20px;
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #fff;
    }

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

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

    .step-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 22px;
      position: relative;
    }

    .step-number {
      font-size: 2.2rem;
      font-weight: 900;
      color: rgba(236, 72, 153, 0.35);
      line-height: 1;
      margin-bottom: 16px;
    }

    .step-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }

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

    /* 对比表格 */
    .compare-container {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      padding: 30px;
    }

    .score-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: linear-gradient(90deg, rgba(236, 72, 153, 0.2), rgba(168, 85, 247, 0.2));
      border: 1px solid var(--accent-pink);
      padding: 8px 18px;
      border-radius: 9999px;
      margin-bottom: 24px;
      font-weight: 700;
      color: #fff;
    }

    .score-highlight {
      color: var(--accent-pink);
      font-size: 1.25rem;
      font-weight: 800;
    }

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .compare-table th {
      color: var(--text-sub);
      font-weight: 600;
      font-size: 0.95rem;
    }

    .compare-table td {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    .compare-table tr:hover td {
      background: rgba(236, 72, 153, 0.05);
    }

    .highlight-col {
      background: rgba(236, 72, 153, 0.08);
      color: #fff !important;
      font-weight: 600;
      border-left: 1px solid rgba(236, 72, 153, 0.3);
      border-right: 1px solid rgba(236, 72, 153, 0.3);
    }

    /* 案例图片展示容器 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .showcase-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition-smooth);
    }

    .showcase-card:hover {
      border-color: var(--accent-pink);
      transform: translateY(-4px);
    }

    .showcase-img-wrap {
      width: 100%;
      overflow: hidden;
      background: #000;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .showcase-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.5s ease;
    }

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

    .showcase-info {
      padding: 20px;
    }

    .showcase-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }

    .showcase-desc {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.5;
    }

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

    .testimonial-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-content {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 16px;
    }

    .user-avatar-badge {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--gradient-btn);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 1rem;
    }

    .user-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
    }

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

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition-smooth);
    }

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

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: #fff;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

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

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      background: rgba(10, 6, 24, 0.4);
    }

    .faq-answer-inner {
      padding: 0 24px 20px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 表单与需求匹配 */
    .form-wrapper {
      background: var(--bg-secondary);
      border: 1px solid var(--border-bright);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--glow-purple);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }

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

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

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

    .form-control {
      width: 100%;
      background: rgba(10, 6, 24, 0.8);
      border: 1px solid rgba(236, 72, 153, 0.3);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      color: #fff;
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition-smooth);
    }

    .form-control:focus {
      border-color: var(--accent-pink);
      box-shadow: 0 0 12px rgba(236, 72, 153, 0.4);
    }

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

    /* 文章与资讯 */
    .article-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
    }

    .article-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 16px;
    }

    .article-link-tag {
      background: rgba(168, 85, 247, 0.1);
      border: 1px solid rgba(168, 85, 247, 0.3);
      padding: 8px 16px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      color: #e2e8f0;
      transition: var(--transition-smooth);
      word-break: break-all;
    }

    .article-link-tag:hover {
      background: var(--gradient-btn);
      border-color: transparent;
      color: #fff;
      transform: translateY(-2px);
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #06040f;
      border-top: 1px solid rgba(236, 72, 153, 0.2);
      padding: 60px 0 30px;
      color: var(--text-sub);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 20px;
    }

    .footer-info-item {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      font-size: 0.92rem;
      color: var(--text-muted);
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 10px;
    }

    .friend-links a {
      color: var(--text-sub);
      font-size: 0.9rem;
      transition: var(--transition-smooth);
    }

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

    .qr-box {
      display: inline-block;
      padding: 10px;
      background: #fff;
      border-radius: var(--radius-sm);
      max-width: 110px;
    }

    .qr-box img {
      width: 100%;
      height: auto;
      display: block;
    }

    .footer-bottom {
      text-align: center;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.88rem;
    }

    /* 浮动客服 */
    .floating-contact {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--gradient-btn);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--glow-pink);
      cursor: pointer;
      border: none;
      transition: var(--transition-smooth);
    }

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

    .float-qr-panel {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: var(--bg-secondary);
      border: 1px solid var(--accent-pink);
      padding: 14px;
      border-radius: var(--radius-md);
      box-shadow: var(--glow-pink);
      display: none;
      flex-direction: column;
      align-items: center;
      width: 140px;
    }

    .float-qr-panel.show {
      display: flex;
    }

    .float-qr-panel span {
      font-size: 0.8rem;
      color: #fff;
      margin-top: 8px;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .hero-title { font-size: 2.6rem; }
      .grid-3, .showcase-grid, .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-4, .step-list, .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-bright);
        gap: 0;
      }
      .nav-links.open { display: flex; }
      .nav-link { width: 100%; text-align: center; }
      .hero-title { font-size: 2rem; }
      .hero-desc { font-size: 1rem; }
      .grid-3, .grid-2, .grid-4, .showcase-grid, .testimonial-grid, .step-list, .hero-stats-grid { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .form-group.full-width { grid-column: span 1; }
      .footer-grid { grid-template-columns: 1fr; }
      .section { padding: 60px 0; }
    }