/* HEADER 置顶抬头 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    z-index: 2000;
    transition: background 0.4s ease;
    display: flex;
    justify-content: center; /* 让 Logo 置中 */
    align-items: center;
    background: #ffffff;
    color: #000000;
}
/* LOGO 居中 */
.logo-container {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.logo-img {
    height: clamp(32px, 4vw, 48px);
    width: auto;
    object-fit: contain;
}

/* 菜单按钮定位在右上，适当向左缩 */
.menu-btn {
    position: absolute;
    right: 2%;
    top: 50%;
    transform: translateY(-50%);
    font-size: clamp(24px, 3vw, 36px);
    border: none;
    background: none;
    color: #1e218c;
    cursor: pointer;
}


/* 横屏（landscape）时图片比例为 2.5:1 */
@media (orientation: landscape) {
.hero-image {
    aspect-ratio: 2.5 / 1;
  }
}
    

        
        body {
            background-color: #f8fafc;
            color: #1e293b;
            line-height: 1.6;
            padding: 20px;
            max-width: 2000px;
            margin: 0 auto;
        }
        
        /* 顶部标题区域 */
        .page-header {
            margin-top: 70px;
            text-align: center;
            margin-bottom: 40px;
            padding: 30px;
            background: linear-gradient(135deg, #1e3a8a, #3b82f6);
            color: white;
            border-radius: 15px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            position: relative;
            overflow: hidden;
        }
        
        .page-header::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('https://images.unsplash.com/photo-1518709268805-4e9042af2176?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover;
            opacity: 0.1;
        }
        
        .page-header h1 {
            font-size: 2.8rem;
            margin-bottom: 15px;
            font-weight: 800;
            position: relative;
        }
        
        .page-header .subtitle {
            font-size: 1.5rem;
            opacity: 0.95;
            margin-bottom: 10px;
            font-weight: 600;
            position: relative;
        }
        
        .page-header .date-location {
            font-size: 1.2rem;
            opacity: 0.9;
            background: rgba(255, 255, 255, 0.15);
            display: inline-block;
            padding: 8px 20px;
            border-radius: 30px;
            margin-top: 10px;
            position: relative;
        }
        
        /* 数据卡片区域 */
        .stats-container {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 25px;
            margin-bottom: 60px;
        }
        
        .stat-card {
            background: white;
            border-radius: 12px;
            padding: 30px 25px;
            min-width: 200px;
            text-align: center;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-top: 4px solid #3b82f6;
        }
        
        .stat-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
        }
        
        .stat-card:nth-child(2) {
            border-top-color: #10b981;
        }
        
        .stat-card:nth-child(3) {
            border-top-color: #f59e0b;
        }
        
        .stat-card:nth-child(4) {
            border-top-color: #8b5cf6;
        }
        
        .stat-number {
            font-size: 3.2rem;
            font-weight: 800;
            color: #1e3a8a;
            margin-bottom: 10px;
            line-height: 1;
        }
        
        .stat-label {
            font-size: 1.1rem;
            color: #475569;
            font-weight: 600;
        }
        
        /* 峰会组件通用样式 */
        .summit-component {
            display: flex;
            background-color: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            margin-bottom: 50px;
            transition: transform 0.3s ease;
        }
        
        .summit-component:hover {
            transform: translateY(-5px);
        }
        
        /* 左侧轮播区域 - 可调整比例 */
        .carousel-section {
            flex: 1;
            min-width: 300px;
            position: relative;
            overflow: hidden;
        }
        
        
        .carousel-container {
            width: 100%;
            height: 100%;
            position: relative;
        }
        
        .carousel-slide {
            width: 100%;
            height: 100%;
            position: absolute;
            top: 0;
            left: 0;
            opacity: 0;
            transition: opacity 0.8s ease;
        }
        
        .carousel-slide.active {
            opacity: 1;
        }
        
        .carousel-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        
        /* 图片左下角文字 */
        .image-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
            color: white;
            padding: 25px 20px 15px;
            font-size: 1.1rem;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        
        /* 轮播控制按钮 */
        .carousel-controls {
            position: absolute;
            bottom: 20px;
            right: 20px;
            display: flex;
            gap: 10px;
        }
        
        .carousel-btn {
            background-color: rgba(255, 255, 255, 0);
            color: white;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            transition: background-color 0.3s;
        }
        
        .carousel-btn:hover {
            background-color: rgba(255, 255, 255, 0.3);
        }
        
        /* 轮播指示点 */
        .carousel-dots {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 8px;
        }
        
        .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0);
            cursor: pointer;
            transition: background-color 0.3s;
        }
        
        .dot.active {
            background-color: rgba(255, 248, 248, 0);
        }
        
        /* 右侧文字区域 */
        .info-section {
            flex: 1;
            min-width: 300px;
            padding: 40px;
            display: flex;
            flex-direction: column;
        }
        
        .component-title {
            font-size: 2.2rem;
            color: #1e3a8a;
            margin-bottom: 25px;
            font-weight: 800;
            line-height: 1.3;
        }
        
        .component-subtitle {
            font-size: 1.4rem;
            color: #3b82f6;
            margin-bottom: 20px;
            font-weight: 700;
        }
        
        .component-content {
            line-height: 1.8;
            color: #475569;
            font-size: 1.1rem;
        }
        
        .component-content p {
            margin-bottom: 20px;
        }
        
        .highlight-quote {
            background-color: #f0f9ff;
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
            border-left: 4px solid #3b82f6;
            font-style: italic;
            color: #334155;
        }
        
        .participant-list {
            margin-top: 20px;
            padding-left: 20px;
        }
        
        .participant-item {
            margin-bottom: 8px;
            color: #475569;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .summit-component {
                flex-direction: column;
            }
            
            .carousel-section {
                aspect-ratio: 16/9;
            }
            
            .info-section {
                padding: 30px;
            }
            
            .stats-container {
                gap: 20px;
            }
            
            .stat-card {
                min-width: 180px;
                padding: 25px 20px;
            }
            
            .stat-number {
                font-size: 2.8rem;
            }
        }
        
        @media (max-width: 768px) {
            .page-header h1 {
                font-size: 2.2rem;
            }
            
            .component-title {
                font-size: 1.8rem;
            }
            
            .info-section {
                padding: 25px;
            }
            
            .stat-card {
                min-width: 150px;
                padding: 20px 15px;
            }
            
            .stat-number {
                font-size: 2.4rem;
            }
        }
        
        @media (max-width: 576px) {
            .stats-container {
                flex-direction: column;
                align-items: center;
            }
            
            .stat-card {
                width: 100%;
                max-width: 300px;
            }
        }
        
        
        .section-divider {
            text-align: center;
            margin: 50px 0 30px;
            position: relative;
        }
        
        .section-divider h2 {
            display: inline-block;
            background: #f8fafc;
            padding: 0 20px;
            color: #1e3a8a;
            font-size: 1.8rem;
            font-weight: 700;
            position: relative;
            z-index: 1;
        }
        
        .section-divider::before {
            content: "";
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 1px;
            background: #e2e8f0;
            z-index: 0;
        }
        
        /* 导航菜单 */
        .component-nav {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
            padding: 20px;
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .nav-link {
            padding: 10px 20px;
            background: #f1f5f9;
            color: #475569;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
        }
        
        .nav-link:hover, .nav-link.active {
            background: #3b82f6;
            color: white;
        }