/* 斑斓彩调风 核心变量 */
    :root {
      --primary: #6366f1; /* 靛蓝 */
      --secondary: #a855f7; /* 紫罗兰 */
      --accent: #ec4899; /* 玫瑰粉 */
      --cyan: #06b6d4; /* 青绿 */
      --dark: #0f172a; /* 深灰 */
      --light-bg: #f8fafc; /* 背景浅灰 */
      --card-bg: #ffffff;
      --text-main: #334155;
      --border-color: #e2e8f0;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--light-bg);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* 全局容器 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 斑斓彩调背景装饰（不影响首屏无图限制的CSS效果） */
    .bg-gradient-mesh {
      position: absolute;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 100%;
      max-width: 1400px;
      height: 800px;
      background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 40%),
                  radial-gradient(circle at 90% 10%, rgba(168, 85, 247, 0.1) 0%, transparent 40%),
                  radial-gradient(circle at 50% 80%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
      z-index: -1;
      pointer-events: none;
    }

    /* 顶部导航 */
    header {
      background: rgba(255, 255, 255, 0.8);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .nav-wrapper {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 70px;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .ai-page-logo {
      height: 40px;
      width: auto;
    }

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

    .nav-menu {
      display: flex;
      gap: 20px;
      list-style: none;
    }

    .nav-menu a {
      text-decoration: none;
      color: var(--dark);
      font-weight: 500;
      font-size: 0.95rem;
      transition: var(--transition);
      position: relative;
    }

    .nav-menu a:hover, .nav-menu a.active {
      color: var(--primary);
    }

    .nav-menu a::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      bottom: -4px;
      left: 0;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      transition: var(--transition);
    }

    .nav-menu a:hover::after {
      width: 100%;
    }

    .nav-btn-group {
      display: flex;
      align-items: center;
      gap: 15px;
    }

    .nav-btn {
      text-decoration: none;
      padding: 8px 18px;
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: 600;
      transition: var(--transition);
    }

    .nav-btn-outline {
      border: 1px solid var(--primary);
      color: var(--primary);
    }

    .nav-btn-outline:hover {
      background: rgba(99, 102, 241, 0.05);
    }

    .nav-btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: white;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
    }

    .nav-btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(99, 102, 241, 0.3);
    }

    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      border: none;
      background: transparent;
    }

    .menu-toggle span {
      width: 25px;
      height: 3px;
      background-color: var(--dark);
      border-radius: 2px;
      transition: var(--transition);
    }

    /* Section 通用样式 */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-title-wrap {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 20px;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 10px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 15px;
    }

    .section-subtitle {
      font-size: 1.1rem;
      color: #64748b;
      max-width: 700px;
      margin: 0 auto;
    }

    /* Hero 首屏 (无图片) */
    .hero-section {
      padding: 100px 0 80px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      max-width: 850px;
      margin: 0 auto;
      z-index: 2;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid rgba(168, 85, 247, 0.3);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 0.9rem;
      color: var(--secondary);
      font-weight: 600;
      margin-bottom: 30px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.03);
    }

    .hero-badge span {
      background: linear-gradient(90deg, var(--accent), var(--secondary));
      color: white;
      padding: 2px 8px;
      border-radius: 10px;
      font-size: 0.75rem;
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--dark);
      margin-bottom: 25px;
      letter-spacing: -0.5px;
    }

    .hero-title span.grad {
      background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent), var(--cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.25rem;
      color: #475569;
      margin-bottom: 40px;
      line-height: 1.6;
    }

    .hero-btns {
      display: flex;
      justify-content: center;
      gap: 20px;
      flex-wrap: wrap;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 32px;
      border-radius: 50px;
      font-size: 1.05rem;
      font-weight: 700;
      text-decoration: none;
      transition: var(--transition);
    }

    .btn-main {
      background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
      color: white;
      box-shadow: 0 10px 25px rgba(99, 102, 241, 0.35);
      border: none;
    }

    .btn-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 15px 30px rgba(99, 102, 241, 0.45);
    }

    .btn-sub {
      background: white;
      color: var(--dark);
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    }

    .btn-sub:hover {
      background: #f1f5f9;
      transform: translateY(-3px);
    }

    /* 数据指标卡片 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 60px;
    }

    .metric-card {
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid rgba(255, 255, 255, 0.8);
      border-radius: 16px;
      padding: 25px 20px;
      text-align: center;
      box-shadow: 0 4px 20px rgba(0,0,0,0.03);
      transition: var(--transition);
    }

    .metric-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 12px 25px rgba(99, 102, 241, 0.08);
      border-color: rgba(99, 102, 241, 0.2);
    }

    .metric-num {
      font-size: 2.2rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }

    .metric-label {
      font-size: 0.95rem;
      color: #64748b;
      font-weight: 600;
    }

    /* 关于我们 & 平台介绍 */
    .about-box {
      background: var(--card-bg);
      border-radius: 24px;
      padding: 50px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.02);
      border: 1px solid var(--border-color);
    }

    .about-layout {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 20px;
    }

    .about-text p {
      color: #475569;
      margin-bottom: 20px;
      font-size: 1.05rem;
    }

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

    .about-feat-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

    .about-feat-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      flex-shrink: 0;
      font-weight: bold;
    }

    .about-feat-content h4 {
      font-size: 1rem;
      color: var(--dark);
      margin-bottom: 4px;
    }

    .about-feat-content p {
      font-size: 0.85rem;
      color: #64748b;
      margin: 0;
    }

    /* 全平台 AIGC 服务 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .service-card {
      background: var(--card-bg);
      border-radius: 20px;
      padding: 35px;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 15px 35px rgba(168, 85, 247, 0.1);
      border-color: rgba(168, 85, 247, 0.3);
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
      opacity: 0;
      transition: var(--transition);
    }

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

    .service-icon-box {
      width: 60px;
      height: 60px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 25px;
    }

    .service-icon-box svg {
      width: 30px;
      height: 30px;
      fill: none;
      stroke: var(--primary);
      stroke-width: 2;
    }

    .service-card h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 12px;
    }

    .service-card p {
      color: #64748b;
      font-size: 0.95rem;
      margin-bottom: 20px;
    }

    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .service-tag-item {
      background: #f1f5f9;
      color: #475569;
      font-size: 0.8rem;
      padding: 4px 10px;
      border-radius: 6px;
      font-weight: 500;
    }

    /* 聚合的模型展示墙 */
    .model-wall-box {
      margin-top: 50px;
      background: rgba(255, 255, 255, 0.6);
      border-radius: 20px;
      padding: 40px;
      border: 1px solid var(--border-color);
      text-align: center;
    }

    .model-wall-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 25px;
    }

    .model-badges {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-badge-item {
      background: white;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #475569;
      transition: var(--transition);
      box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    }

    .model-badge-item:hover {
      border-color: var(--secondary);
      color: var(--secondary);
      transform: scale(1.05);
    }

    /* 一站式制作 & 标准流程 */
    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 25px;
    }

    .workflow-step {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 20px;
      padding: 30px 25px;
      position: relative;
      transition: var(--transition);
    }

    .workflow-step:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 20px rgba(0,0,0,0.04);
      border-color: var(--cyan);
    }

    .step-num {
      position: absolute;
      top: -15px;
      left: 25px;
      font-size: 2rem;
      font-weight: 900;
      background: linear-gradient(135deg, var(--cyan), var(--primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
    }

    .workflow-step h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-top: 10px;
      margin-bottom: 12px;
      color: var(--dark);
    }

    .workflow-step p {
      font-size: 0.9rem;
      color: #64748b;
    }

    /* 对比评测 */
    .comparison-wrapper {
      background: var(--card-bg);
      border-radius: 24px;
      padding: 45px;
      border: 1px solid var(--border-color);
      box-shadow: 0 15px 40px rgba(0,0,0,0.02);
    }

    .comp-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 35px;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 25px;
    }

    .comp-score-box {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-circle {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent), var(--secondary));
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      color: white;
      box-shadow: 0 8px 20px rgba(236, 72, 153, 0.3);
    }

    .score-num {
      font-size: 1.8rem;
      font-weight: 800;
      line-height: 1;
    }

    .score-max {
      font-size: 0.75rem;
      opacity: 0.9;
    }

    .score-info h4 {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--dark);
    }

    .score-stars {
      color: #fbbf24;
      font-size: 1.1rem;
      margin-top: 4px;
    }

    .comp-table-container {
      overflow-x: auto;
    }

    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .comp-table th, .comp-table td {
      padding: 18px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .comp-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--dark);
    }

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

    .comp-tag-yes {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 6px;
      background: rgba(16, 185, 129, 0.1);
      color: #10b981;
      font-size: 0.85rem;
      font-weight: 600;
    }

    .comp-tag-no {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 6px;
      background: rgba(239, 68, 68, 0.1);
      color: #ef4444;
      font-size: 0.85rem;
      font-weight: 600;
    }

    /* Token 比价 */
    .token-box {
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(168, 85, 247, 0.05));
      border-radius: 24px;
      padding: 40px;
      border: 1px solid rgba(168, 85, 247, 0.1);
    }

    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .token-card {
      background: white;
      border-radius: 16px;
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    }

    .token-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
    }

    .token-name {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark);
    }

    .token-tag {
      background: rgba(6, 182, 212, 0.1);
      color: var(--cyan);
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.75rem;
      font-weight: 600;
    }

    .token-price-wrap {
      margin-bottom: 20px;
    }

    .token-price-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--accent);
    }

    .token-price-unit {
      font-size: 0.85rem;
      color: #64748b;
    }

    .token-features {
      list-style: none;
      padding-top: 15px;
      border-top: 1px solid #f1f5f9;
    }

    .token-features li {
      font-size: 0.85rem;
      color: #64748b;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .token-features li::before {
      content: '✓';
      color: var(--cyan);
      font-weight: bold;
    }

    /* 职业技术培训 */
    .training-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .training-card {
      background: var(--card-bg);
      border-radius: 20px;
      padding: 35px;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .training-card:hover {
      box-shadow: 0 15px 30px rgba(99,102,241,0.05);
      border-color: var(--primary);
    }

    .training-info h3 {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 12px;
    }

    .training-info p {
      color: #64748b;
      font-size: 0.95rem;
      margin-bottom: 25px;
    }

    .training-items {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-bottom: 30px;
    }

    .train-item {
      background: #f8fafc;
      padding: 10px 14px;
      border-radius: 8px;
      font-size: 0.85rem;
      color: var(--dark);
      font-weight: 600;
      border-left: 3px solid var(--primary);
    }

    .train-btn {
      align-self: flex-start;
      padding: 10px 24px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: white;
      text-decoration: none;
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: 600;
      transition: var(--transition);
    }

    .train-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 15px rgba(99,102,241,0.2);
    }

    /* 案例展示区 (配合图文) */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .case-card {
      background: var(--card-bg);
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 15px 30px rgba(0,0,0,0.05);
    }

    .case-img-wrap {
      width: 100%;
      height: 240px;
      overflow: hidden;
      background: #e2e8f0;
      position: relative;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }

    .case-content {
      padding: 30px;
    }

    .case-cat {
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 8px;
    }

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

    .case-desc {
      font-size: 0.9rem;
      color: #64748b;
      margin-bottom: 20px;
    }

    /* 用户评论 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .review-card {
      background: var(--card-bg);
      border-radius: 20px;
      padding: 30px;
      border: 1px solid var(--border-color);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: 0 4px 15px rgba(0,0,0,0.01);
      transition: var(--transition);
    }

    .review-card:hover {
      border-color: var(--secondary);
      box-shadow: 0 10px 25px rgba(168, 85, 247, 0.05);
    }

    .review-text {
      font-size: 0.95rem;
      color: #475569;
      font-style: italic;
      margin-bottom: 25px;
      line-height: 1.6;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--cyan));
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }

    .review-info h4 {
      font-size: 0.9rem;
      color: var(--dark);
      font-weight: 700;
    }

    .review-info p {
      font-size: 0.75rem;
      color: #64748b;
    }

    /* FAQ 折叠面板 */
    .faq-wrapper {
      max-width: 850px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      margin-bottom: 15px;
      overflow: hidden;
      transition: var(--transition);
    }

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

    .faq-btn {
      width: 100%;
      padding: 20px 25px;
      background: transparent;
      border: none;
      text-align: left;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-icon {
      font-size: 1.3rem;
      color: var(--primary);
      transition: var(--transition);
    }

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

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fafafa;
    }

    .faq-content-inner {
      padding: 0 25px 20px;
      color: #64748b;
      font-size: 0.95rem;
      line-height: 1.6;
    }

    /* 术语百科与自助排查 */
    .glossary-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .glossary-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 25px;
      transition: var(--transition);
    }

    .glossary-card:hover {
      border-color: var(--cyan);
      box-shadow: 0 8px 20px rgba(6, 182, 212, 0.05);
    }

    .glossary-card h3 {
      font-size: 1.1rem;
      color: var(--dark);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .glossary-card h3::before {
      content: '';
      display: inline-block;
      width: 6px;
      height: 16px;
      background: var(--cyan);
      border-radius: 3px;
    }

    .glossary-card p {
      font-size: 0.85rem;
      color: #64748b;
      line-height: 1.5;
    }

    /* 行业资讯 / 知识库 */
    .articles-box {
      background: var(--card-bg);
      border-radius: 24px;
      padding: 40px;
      border: 1px solid var(--border-color);
    }

    .articles-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      list-style: none;
    }

    .article-item {
      padding: 15px;
      border-bottom: 1px solid #f1f5f9;
      transition: var(--transition);
    }

    .article-item:hover {
      background: #fafafa;
    }

    .article-item a {
      text-decoration: none;
      color: var(--dark);
      font-weight: 600;
      font-size: 0.95rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

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

    /* 智能需求匹配与联系我们（包含表单） */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1.3fr;
      gap: 50px;
    }

    .contact-info-card {
      background: linear-gradient(135deg, var(--dark) 0%, #1e293b 100%);
      color: white;
      border-radius: 24px;
      padding: 40px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    }

    .contact-info-card h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 15px;
      color: white;
    }

    .contact-info-card p {
      color: #94a3b8;
      font-size: 0.95rem;
      margin-bottom: 30px;
    }

    .contact-details {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .detail-item {
      display: flex;
      align-items: flex-start;
      gap: 15px;
    }

    .detail-icon {
      width: 40px;
      height: 40px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .detail-content h4 {
      font-size: 0.9rem;
      color: #cbd5e1;
    }

    .detail-content p {
      font-size: 0.95rem;
      color: white;
      margin: 0;
    }

    .contact-qr-group {
      display: flex;
      gap: 20px;
      margin-top: 30px;
      background: rgba(255, 255, 255, 0.05);
      padding: 20px;
      border-radius: 16px;
    }

    .contact-qr-item {
      text-align: center;
      flex: 1;
    }

    .contact-qr-item img {
      width: 100px;
      height: 100px;
      border-radius: 8px;
      background: white;
      padding: 4px;
      margin-bottom: 8px;
    }

    .contact-qr-item p {
      font-size: 0.8rem;
      color: #94a3b8;
      margin: 0;
    }

    /* 表单组件 */
    .form-wrapper {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 24px;
      padding: 45px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.02);
    }

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

    .form-label {
      display: block;
      font-weight: 700;
      font-size: 0.9rem;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      font-size: 0.95rem;
      transition: var(--transition);
      background: #f8fafc;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: white;
      box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    }

    .form-submit-btn {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: white;
      border: none;
      border-radius: 10px;
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
    }

    .form-submit-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
    }

    /* 友情链接与页脚 */
    footer {
      background: var(--dark);
      color: #94a3b8;
      padding: 60px 0 30px;
      border-top: 1px solid rgba(255,255,255,0.08);
    }

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

    .footer-brand h3 {
      color: white;
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 15px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.6;
    }

    .footer-links h4 {
      color: white;
      font-size: 1rem;
      margin-bottom: 20px;
    }

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

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

    .footer-links ul li a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.9rem;
      transition: var(--transition);
    }

    .footer-links ul li a:hover {
      color: white;
    }

    .footer-friends-container {
      border-top: 1px solid rgba(255,255,255,0.08);
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding: 20px 0;
      margin-bottom: 30px;
    }

    .footer-friends-title {
      font-size: 0.85rem;
      text-transform: uppercase;
      margin-bottom: 12px;
      font-weight: 700;
      color: #cbd5e1;
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
    }

    .friend-links-wrap a {
      color: #64748b;
      text-decoration: none;
      font-size: 0.85rem;
      transition: var(--transition);
    }

    .friend-links-wrap a:hover {
      color: white;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      font-size: 0.85rem;
    }

    /* 浮动组件 */
    .float-panel {
      position: fixed;
      bottom: 40px;
      right: 30px;
      display: flex;
      flex-direction: column;
      gap: 15px;
      z-index: 999;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: white;
      box-shadow: 0 4px 15px rgba(0,0,0,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      position: relative;
      transition: var(--transition);
      border: 1px solid var(--border-color);
    }

    .float-btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 25px rgba(99, 102, 241, 0.2);
      border-color: var(--primary);
    }

    .float-btn svg {
      width: 22px;
      height: 22px;
      fill: none;
      stroke: var(--dark);
      stroke-width: 2;
    }

    .float-btn.primary {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border: none;
    }

    .float-btn.primary svg {
      stroke: white;
    }

    .float-qr-hover {
      position: absolute;
      right: 65px;
      bottom: 0;
      background: white;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 15px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.15);
      display: none;
      flex-direction: column;
      align-items: center;
      width: 150px;
    }

    .float-btn:hover .float-qr-hover {
      display: flex;
    }

    .float-qr-hover img {
      width: 120px;
      height: 120px;
      margin-bottom: 8px;
    }

    .float-qr-hover p {
      font-size: 0.75rem;
      color: var(--dark);
      font-weight: 700;
      margin: 0;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .training-grid {
        grid-template-columns: 1fr;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .review-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-layout {
        grid-template-columns: 1fr;
      }
      .about-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-top: 1px solid var(--border-color);
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-btn-group {
        display: none;
      }
      .menu-toggle {
        display: flex;
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .service-grid {
        grid-template-columns: 1fr;
      }
      .workflow-grid {
        grid-template-columns: 1fr;
      }
      .review-grid {
        grid-template-columns: 1fr;
      }
      .token-grid {
        grid-template-columns: 1fr;
      }
      .glossary-grid {
        grid-template-columns: 1fr;
      }
      .articles-list {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }