a{
	text-decoration:none;
}
body {
            margin: 0;
            padding: 0;
            overflow: hidden;
            position: relative;
            background: #11998e;  /* fallback for old browsers */
            background: -webkit-linear-gradient(to right, #6b7274, #101315);  /* Chrome 10-25, Safari 5.1-6 */
            background: linear-gradient(to right, #6b7274, #101315); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
        }
        canvas {
            display: block;
            outline: none;
            position: fixed;
            top: 0;
            left: 0;
            z-index: -1;
        }
        .countdown{
            color:#fff;
            font-weight: 400;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 10;
            font-size: 18px;
            text-align: center;
        }
/* --- 主内容容器 (遮罩层) --- */
        .container {
            position: relative;
            z-index: 1;
            padding: 60px 80px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        /* --- 1. 头部 (Header) --- */
        header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            padding-bottom: 40px;
            margin-bottom: 50px;
        }

        /* 左侧 Logo 区域 (CSS 模拟) */
        .logo-area {
            display: flex;
            align-items: center;
            max-width: 200px;
        }
        .logo-area img,
        .header-right img,
        .theme-title img{
            max-width: 100%;
            height: auto;
        }
        

        /* 右侧标题区域 */
        .header-right {
            text-align: right;
            display: flex;
            gap: 40px;
            max-width: 600px;
        }

        /* --- 2. 主要内容网格 (Main Grid) --- */
        .grid-content {
            display: grid;
            position: relative;
            grid-template-columns: repeat(4, 1fr); /* 4列等分 */
            gap: 60px;
            flex-grow: 1;
            padding:20px;
            /* 使用深色半透明背景，让粒子隐约可见，同时保证文字清晰 */
            background: rgba(43, 45, 53, 0.75); 
            /* 可选：磨砂玻璃效果，消耗性能，视情况开启 */
            /* backdrop-filter: blur(3px);  */
            /* 右下角切角效果 */
            clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%);
        }
        .corner-adee{
            content:'';
            width:40px;
            height:40px;
            position: absolute;
            bottom: 0;
            right: 0;
            background-image:url('../img/adee.png');
            background-size:contain;
            background-repeat: no-repeat;
        }

        .column {
            display: flex;
            flex-direction: column;
            text-decoration: none;
        }

        /* 系部标题 */
        .dept-title {
            position: relative;
            font-size: 22px;
            font-weight: bold;
            color:#fff;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 1px solid rgba(255,255,255,1);
        }
        .dept-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -3px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: #ffffff;
        }

        /* 专业列表 */
        .majors {
            font-size: 12px;
            color: #ccc;
            line-height: 1.6;
            margin-bottom: 40px;
            min-height: 60px; /* 对齐高度 */
        }

        /* 主题大标题 */
        .theme-title {
            font-size: 36px;
            font-weight: 400;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .theme-title span {
            font-weight: 300;
            font-size: 24px;
            opacity: 0.8;
        }

        /* 描述文本 */
        .description {
            font-size: 12px;
            line-height: 1.8;
            color: #ddd;
            margin-bottom: 40px;
            text-align: justify;
            flex-grow: 1; /* 让下方信息沉底 */
        }

        /* 时间地点信息 */
        .info-block {
            font-size: 12px;
            color: #ccc;
            margin-top: auto;
        }
        .info-row {
            margin-bottom: 8px;
        }

        /* 底部英文部门名 */
        .footer-dept-en {
            position: relative;
            margin-top: 30px;
            padding-top: 15px;
            border-top: 1px solid rgba(255,255,255,1);
            font-size: 10px;
            text-transform: uppercase;
            color: #af905b;
            letter-spacing: 0.5px;
        }
        .footer-dept-en::after {
            content: '';
            position: absolute;
            left: 0;
            top: -4px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: #ffffff;
        }

        /* 右下角 logo */
        .bottom-logo {
            position: fixed;
            bottom: 30px;
            right: 30px;
            opacity: 0.5;
        }

        /* --- 响应式适配 (简单的堆叠) --- */
        @media (max-width: 1200px) {
            .grid-content {
                grid-template-columns: repeat(2, 1fr);
                gap: 60px;
            }
        }
        @media (max-width: 768px) {
            .container { padding: 30px; }
            header { flex-direction: column; gap: 20px; }
            .header-right { text-align: left; flex-direction: column; gap: 20px; }
            .school-info { border: none; padding: 0; }
            .grid-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 1440px) {
            .container{padding: 10px 20px;}
            header{margin-bottom: 0;}
        }