<style>
        .history-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .history-header h2 {
            font-size: 24px;
            color: #1a2b48;
            margin-bottom: 12px;
            text-align:center;
        }
        .history-header p {
            font-size: 16px;
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 瀑布流容器 */
        .card-waterfall {
            max-width: 1200px;
            margin: 0 auto;
            column-count: 3;
            column-gap: 25px;
            font-family: Microsoft YaHei;
        }

        /* 年份卡片 */
        .year-card {
            break-inside: avoid;
            background: #fff;
            border-radius: 12px;
            padding: 28px;
            margin-bottom: 25px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.06);
            transition: all 0.3s ease;
            cursor: pointer;
            border-left: 4px solid #23529c;
        }
        .year-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }

        /* 年份样式 */
        .year {
            font-size: 26px;
            font-weight: bold;
            color: #23529c;
            margin-bottom: 12px;
        }

        /* 标题 */
        .card-title {
            font-size: 18px;
            color: #222;
            margin-bottom: 10px;
            font-weight: 500;
        }

        /* 简介（默认显示） */
        .card-desc {
            font-size: 15px;
            color: #555;
            line-height: 1.6;
            margin-bottom: 10px;
        }

        /* 详情（默认隐藏，点击展开） */
        .card-detail {
            display: none;
            font-size: 14px;
            color: #666;
            line-height: 1.7;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px dashed #ddd;
        }

        /* 响应式：手机端 */
        @media (max-width: 768px) {
            .card-waterfall {
                column-count: 1;
            }
            .history-header h2 {
                font-size: 26px;
            }
        }

        /* 平板端 */
        @media (min-width: 769px) and (max-width: 1024px) {
            .card-waterfall {
                column-count: 2;
            }
        }</style>