h1 {
            color: #2c3e50;
            margin-bottom: 10px;}
        
        .subtitle {
            color: #7f8c8d;
            font-size: 0.16rem;}
        
        .content-area {
            display: grid;
            grid-template-columns: 3fr 1fr;
            gap: 30px;}
        
        @media (max-width: 768px) {
            .content-area {
                grid-template-columns: 1fr;}
        }
        
        .text-content {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);}
        
        .text-content p {
            margin-bottom: 20px;
            font-size: 1.1rem;}
        
        .clickable-text {
            display: inline-block;
            color: #3498db;
            cursor: pointer;
            padding: 0 2px;
            border-bottom: 2px dotted #3498db;
            transition: all 0.3s ease;
            position: relative;}
        
        .clickable-text:hover {
            color: #2980b9;
            border-bottom: 2px solid #2980b9;
            transform: translateY(-2px);}
        
        .popup-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.6);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;}
        
        .popup-overlay.active {
            opacity: 1;
            visibility: visible;}
        
        .popup-container {
            background: white;
            border-radius: 15px;
            max-width: 700px;
            width: 90%;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            transform: translateY(-30px);
            transition: transform 0.4s ease;
            position: relative;}
        
        .popup-overlay.active .popup-container {
            transform: translateY(0);}
        
        .popup-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;}
        
        .popup-title {
            color: #2c3e50;
            font-size: 0.22rem;}
        
        .popup-close {
            background: #f8f9fa;
            border: none;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 0.16rem;
            color: #7f8c8d;
            transition: all 0.3s ease;}
        
        .popup-close:hover {
            background: #e74c3c;
            color: white;}
        
        .popup-content {
            font-size: 0.16rem;
            line-height: 1.7;}
        
        .popup-content p {
            margin-bottom: 15px;}
        
        .controls {
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            align-self: start;}
        
        .controls h3 {
            color: #2c3e50;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid #eee;}
        
        .style-option {
            margin-bottom: 20px;}
        
        .style-option label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #555;}
        
        select, .color-picker {
            width: 100%;
            padding: 10px 15px;
            border-radius: 8px;
            border: 1px solid #ddd;
            font-size: 0.14rem;
            background: #f8f9fa;}

        
        .color-options {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 8px;
            margin-top: 8px;}
        
        .color-option {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            cursor: pointer;
            transition: transform 0.2s;}
        
        .color-option:hover {
            transform: scale(1.1);}
        
        .color-option.active {
            transform: scale(1.1);
            box-shadow: 0 0 0 2px white, 0 0 0 4px #3498db;}
        
        .instructions {
            margin-top: 40px;
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);}
        
        .instructions h3 {
            color: #2c3e50;
            margin-bottom: 15px;}
        
        .instructions ul {
            padding-left: 20px;}
        
        .instructions li {
            margin-bottom: 10px;}
			
			 .content-section {
     
      color: #333;}
    
    .section-title {
      font-size: 0.24rem;
      color: #276BB6;
      margin-bottom: 10px;
      padding-bottom: 5px;
      border-bottom: 2px solid #276BB6;}
    
    /*.history-item, .info-card {
      display: flex;
      margin: 25px 0;
      padding: 15px;
      background: #f8f9fa;
      border-radius: 8px;
      align-items: flex-start;
    }
    
    .history-item img, .info-card img {
      width: 120px;
      height: 120px;
      object-fit: cover;
      border-radius: 6px;
      margin-right: 20px;
      flex-shrink: 0;
    }
    */
    .text-content {
      flex: 1;}
    
    .subtitle2 {
      font-size: 0.18rem;
      font-weight:800;
      color: #276BB6;
      margin: 0 0 8px 0;}
    
    .text-content p {
      margin: 0 0 15px 0;
      line-height: 1.6;
      font-size: 16px;}
    
   /* .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      margin: 25px 0;
    }
    
    .stat-card {
      padding: 20px;
      background: white;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
      border-left: 4px solid #276BB6;
    }
    
    .stat-card.blue {
      background: #276BB6;
      color: white;
    }
    
    .stat-card h3 {
      font-size: 18px;
      margin: 0 0 12px 0;
      color: inherit;
    }*/
    
    .dual-column {
      display: flex;
      gap: 30px;
      margin: 25px 0;
      align-items: flex-start;}
    
    .column-text {
      flex: 1;}
    
    .column-image {
      width: 35%;
      flex-shrink: 0;}
    
    .column-image img {
      width: 100%;
      height: auto;
      border-radius: 8px;}
    
    .date-note {
      text-align: right;
      font-size: 14px;
      color: #666;
      margin-top: 30px;
      padding-top: 15px;
      border-top: 1px solid #ddd;}
    
    @media (max-width: 768px) {
      .history-item, .info-card, .dual-column {
        flex-direction: column;}
      
      .history-item img, .info-card img, .column-image {
        width: 100%;
        margin-right: 0;
        margin-bottom: 15px;}
      
      .stats-grid {
        grid-template-columns: 1fr;}
      
      .dual-column {
        gap: 20px;}
      
      .column-image {
        width: 100%;}
    }
    
    .clearfix::after {
      content: "";
      display: table;
      clear: both;}
	  
	  .content-section {
  font-family: "Microsoft YaHei", "SimSun", sans-serif;
  color: #333;
  line-height: 1.6;}

.content-section h2 {
  font-size: 18px;
  font-weight: bold;
  margin: 20px 0 10px;
  color: #666;}

.content-section p {
  font-size: 16px;
  text-align: justify;
  text-indent: 2em;
  margin-bottom: 15px;
  line-height: 1.8;}

.content-section .date-note {
  text-align: right;
  text-indent: 0;
  margin-top: 30px;
  color: #666;
  font-style: italic;}


 *{
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Arial,'Segoe UI', 'Microsoft YaHei', sans-serif;}
        
        :root {
            --primary: #1a6dba;
            --primary-dark: #0d4d8c;
            --secondary: #2c3e50;
            --accent: #e74c3c;
            --light: #f5f7fa;
            --gray: #95a5a6;
            --text: #333;
            --text-light: #fff;}
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ed 100%);
            color: var(--text);
            line-height: 1.6;
            min-height: 100vh;
            padding: 0;}
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;}
        
        
         /* 头部样式 */
        header {
            background: rgba(60, 120, 210, 0.5);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);}
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;}
        
        .logo {
            display: flex;
            align-items: center;
            gap: 15px;}
        
        .logo-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
            box-shadow: 0 4px 6px rgba(26, 86, 219, 0.2);}
        
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: -0.5px;}
        
        .logo-text span {
            color: var(--primary);}
        
        nav ul {
            display: flex;
            list-style: none;
            gap: 6px;}
        
        nav a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            font-size: 16px;}
        
        nav a:hover {
            color: var(--primary);}
        
        nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            transition: width 0.3s ease;}
        
        nav a:hover::after {
            width: 70%;}
        
        
        
        
        
       .header2 {
            text-align: center;
            margin-bottom: 40px;
            padding: 20px 20px;
            *background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);*
            color: #333;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            position: relative;
            overflow: hidden;}
        
        .header2::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
            z-index: 1;}
        
        h1 {
            font-size: 0.26rem;
            margin-bottom: 15px;
            position: relative;
            z-index: 2;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);}
        
        .subtitle {
            font-size: 0.16rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;}
        
        .content {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: center;
            margin-bottom: 40px;}
        
        .card {
            flex: 1;
            min-width: 300px;
            background: white;
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            position: relative;
            overflow: hidden;
            border-top: 5px solid var(--primary);}
        
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);}
        
        .card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;}
        
        .card:hover::after {
            transform: scaleX(1);}
        
        .card-title {
            font-size: 0.25rem;
            margin-bottom: 20px;
            color: var(--primary);
            display: flex;
            align-items: center;
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 15px;}
        
        .card-title i {
            margin-right: 12px;
            font-size: 0.25rem;
            color: var(--accent);}
        
        .card-content {
            font-size: 0.16rem;
            color: #555;}
        
        .tooltip-trigger {
            display: inline-block;
            /*margin-top: 15px;*/
            padding: 5px 10px;
           /* background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);*/
            color: #275aac;
            border-radius: 20px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
           /* box-shadow: 0 4px 15px rgba(26, 109, 186, 0.3);*/
            border: none;}
        
        .tooltip-trigger:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 20px rgba(26, 109, 186, 0.4);
           /* background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);*/
           background:#275aac;
            color:#fff;}
        
        .tooltip {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 90%;
            max-width: 800px;
            max-height: 85vh;
            background-color: white;
            color: var(--text);
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 15px 50px rgba(0, 0, 0, 0.25);
            z-index: 1000;
            overflow-y: auto;
            animation: fadeIn 0.3s ease;}
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translate(-50%, -48%);}
            to { opacity: 1; transform: translate(-50%, -50%);}
        }
        
        .tooltip h3 {
            font-size: 0.25rem;
            margin-bottom: 20px;
            color: var(--primary);
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 10px;}
        
        .tooltip h4 {
            font-size: 0.2rem;
            margin: 20px 0 10px;
            color: var(--secondary);}
        
        .tooltip ul {
            padding-left: 20px;
            margin-bottom: 20px;}
        
        .tooltip li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 10px;}
        
        .tooltip li::before {
            content: '•';
            color: var(--accent);
            font-weight: bold;
            position: absolute;
            left: -10px;}
        
        .platform-list {
            margin-top: 15px;}
        
        .platform-category {
            margin-bottom: 25px;}

        
        .platform-category h4 {
            display: flex;
            align-items: center;
            margin-bottom: 12px;
            font-size: 0.2rem;}
        
        .platform-category h4 i {
            margin-right: 10px;
            color: var(--accent);}
        
        .cooperative {
            font-style: italic;
            color: var(--gray);
            font-size: 0.2rem;}
        
        .close-btn {
            position: absolute;
            top: 15px;
            right: 20px;
            background: none;
            border: none;
            font-size:0.2rem;
            color: var(--gray);
            cursor: pointer;
            transition: color 0.3s;}
        
        .close-btn:hover {
            color: var(--accent);}
        
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            backdrop-filter: blur(3px);}
        
        footer {
            text-align: center;
            margin-top: 40px;
            padding: 25px;
            color: var(--gray);
            font-size: 0.95rem;
            border-top: 1px solid #eaeaea;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);}
        
        .stats {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            margin: 30px 0;
            gap: 20px;}
        
        .stat-item {
            text-align: center;
            padding: 20px 10px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            flex: 1;
            min-width: 115px;
            transition: transform 0.3s ease;}
        
        .stat-item:hover {
            transform: translateY(-5px);}
        
        .stat-number {
            font-size: 0.3rem;
            font-weight: bold;
            color: var(--primary);
            display: block;
            margin-bottom:5px;}
        
        .stat-label {
            font-size: 0.15rem;
            color: var(--secondary);
            margin-top: 5px;}
        
       /* 响应式设计 */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 0.8rem;}
            
            .card-grid {
                grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));}
        }
        
        @media (max-width: 768px) {
            nav ul {
                gap: 15px;}
            
            .hero {
                padding: 70px 0 40px;}
            
            .hero h1 {
                font-size: 0.3rem;}
            
            .hero p {
                font-size: 0.2rem;}
            
            .section {
                padding: 60px 0;}
            
            .section-title h2 {
                font-size: 0.35rem;}
            
            .timeline::before {
                left: 30px;}
            
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 0;
                left: 0 !important;}
            
            .timeline-item:nth-child(even) .timeline-content::after {
                left: auto;
                right: -10px;}
        }
        
        @media (max-width: 576px) {
            .header-container {
                flex-direction: column;
                gap: 15px;}
            
            nav ul {
                flex-wrap: wrap;
                justify-content: center;}
            
            .hero h1 {
                font-size: 0.5rem;}
            
            .stat-item {
                min-width: 150px;
                padding: 15px 20px;}
            
            .stat-item h3 {
                font-size: 0.35rem;}
            
            .card-grid {
                grid-template-columns: 1fr;}
        }