/* 全局样式与重置 */
        :root {
            --primary-blue: #1a73e8;
            --light-blue: #e8f0fe;
            --bg-color: #f8f9fa;
            --text-dark: #202124;
            --text-gray: #5f6368;
            --border-color: #dadce0;
            --white: #ffffff;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        body {
            color: var(--text-dark);
            line-height: 1.6;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            display: block;
        }

        /* 通用容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 区块通用标题 */
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: bold;
            margin-bottom: 10px;
            color: #333;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-gray);
        }

        /* 顶部导航 */
        header {
            background-color: var(--white);
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 100;
        }

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

        .logo {
            font-size: 20px;
            font-weight: bold;
            color: var(--primary-blue);
            display: flex;
            align-items: center;
        }

        /* Hero 首屏区域 */
        .hero {
            padding: 20px 0;
            overflow: hidden;
            background: url(../img/hyzx_banner.png) no-repeat center center;
        }

        .hero-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        .hero-text {
            flex: 1;
        }

        .hero-text h1 {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 20px;
            color: #111;
        }

        .hero-text p {
            font-size: 18px;
            color: var(--text-gray);
            max-width: 500px;
        }

        .hero-image {
            flex: 1;
            display: flex;
            justify-content: flex-end;
        }

        /* 本土心理学底座 */
        .base-section {
            padding: 80px 0;
            background-color: var(--white);
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
        }

        .base-card {
            background-color: #f0f4fa;
            border-radius: 12px;
            padding: 30px 20px;
            text-align: center;
            transition: transform 0.3s;
        }
        
        .base-card:hover {
            transform: translateY(-5px);
        }

        .base-card img {
            height: 130px;
            margin: 0 auto 23px;
        }

        .base-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
            color: #333;
        }

        .base-card p {
            font-size: 14px;
            color: var(--text-gray);
        }

        /* 认知神经科学用研平台 */
        .platform-section {
            padding: 80px 0;
            background-color: var(--bg-color);
            background: url(../img/znxl_bg.png) no-repeat center center;
            background-size: cover;
        }

        .platform-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }

        .platform-image {
            flex: 1;
            text-align: center;
        }
        
        .platform-image p {
            font-size: 12px;
            color: var(--text-gray);
            margin-top: 20px;
        }

        .platform-list {
            flex: 1;
        }

        .platform-item {
            display: flex;
            gap: 20px;
            background: var(--white);
            padding: 20px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
            position: relative;
        }

        .platform-item::after{
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            background-color: #dbdbdb;
            height: 1px;
            width: 80%;
            left: 10%;
        }

        .platform-item:last-child::after{
            display: none;
        }

        .platform-item img {
            width: 40px;
            height: 40px;
        }

        .platform-item h4 {
            font-size: 16px;
            margin-bottom: 5px;
        }

        .platform-item p {
            font-size: 14px;
            color: var(--text-gray);
        }

        /* 智能分析 */
        .analysis-section {
            padding: 80px 0;
            background-color: var(--white);
        }

        .analysis-content {
            display: flex;
            align-items: center;
            gap: 50px;
            flex-direction: row-reverse; /* 调整左右布局 */
        }

        .analysis-image {
            flex: 1;
            text-align: center;
        }

        .analysis-list {
            flex: 1;
        }

        .analysis-item {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 20px;
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
            background: #f8faff;
        }

        .analysis-item img {
            width: 40px;
            height: 40px;
        }
        
        .analysis-item h4 {
            font-size: 16px;
            margin-bottom: 4px;
        }
        
        .analysis-item p {
            font-size: 14px;
            color: var(--text-gray);
        }

        /* 研究案例 */
        .case-section {
            padding: 80px 0;
            background-color: var(--bg-color);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }

        .case-card {
            background: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
        }

        .case-card img.cover {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .case-info {
            padding: 25px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .case-info h3 {
            font-size: 18px;
            margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
        }

        .case-info p {
            font-size: 13px;
    color: #666;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 40px;
        }

        .btn {
            display: inline-block;
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-primary {
            background-color: var(--primary-blue);
            color: var(--white);
            align-self: flex-start;
        }
        
        .btn-primary:hover {
            background-color: #1557b0;
        }

        .btn-outline {
            background-color: transparent;
            color: var(--primary-blue);
            border: 1px solid var(--primary-blue);
            margin: 0 auto;
            display: block;
            width: 120px;
        }
        
        .btn-outline:hover {
            background-color: var(--light-blue);
        }
/* ================= AI 访谈与主持 ================= */
        .ai-section {
            padding: 80px 0 0px 0;
            background-color: #fff;
        }
        .ai-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }
        /* 第一排3个 */
        .ai-card-small {
            grid-column: span 2;
            background: #f4f8ff;
            border-radius: 12px;
            padding: 30px;
            text-align: center;
        }
        /* 第二排2个 */
        .ai-card-large {
            grid-column: span 3;
            background: #f4f8ff;
            border-radius: 12px;
            padding: 30px;
            display: flex;
            align-items: center;
            gap: 20px;
            text-align: left;
        }
        .ai-card-img {
            height: 100px;
            margin-bottom: 20px;
            display: flex;
            justify-content: center;
        }
        .ai-card-large .ai-card-img {
            margin-bottom: 0;
            width: 120px;
            flex-shrink: 0;
        }
        .ai-card-img img {
            height: 100%;
            object-fit: contain;
        }
        .ai-card-small h3 {
            font-size: 18px;
            color: #2b7afb;
            margin-bottom: 10px;
        }
        .ai-card-large h3 {
            font-size: 18px;
            color: #2b7afb;
            margin-bottom: 10px;
        }
        .ai-card-small p, .ai-card-large p {
            font-size: 13px;
            color: #666;
        }
    
        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero-text h1 { font-size: 36px; }
            .cards-grid { grid-template-columns: repeat(2, 1fr); }
            .platform-content, .analysis-content { flex-direction: column; }
            .analysis-content { flex-direction: column-reverse; }
            .cases-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .hero{
                padding:20px 0;
            }
            /* 导航移动端处理 */
           .base-section,.platform-section,.case-section{
            padding: 20px 0;
           }
            
            .hero-container { flex-direction: column; text-align: center; }
            .hero-text p { margin: 0 auto; }
            .hero-image { justify-content: center; margin-top: 30px; }
            
            .cards-grid { grid-template-columns: 1fr; }
            .cases-grid { grid-template-columns: 1fr; }

            .ai-grid {
                grid-template-columns: 1fr;
            }
            .ai-card-small, .ai-card-large {
                grid-column: span 1;
            }
            .ai-card-large {
                flex-direction: column;
                text-align: center;
            }
            
        }