:root {
    --primary-color: #4a6fa5;
    --secondary-color: #166088;
    --accent-color: #4fc3f7;
    --text-color: #333;
    --light-bg: #f9f9f9;
    --card-bg: #fff;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --mocha-mousse: #A57865;
    /* 摩卡缪斯主题色 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    /* 摩卡缪斯主题色 (HEX: #A57865, RGB: 165,120,101, PANTONE: 17-1230) */
    background-color: var(--mocha-mousse);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding: 40px 0;
    margin-bottom: 30px;
}

header h1 {
    color: #ffffff;
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

header p {
    color: #f0f0f0;
    font-size: 1.2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.category {
    margin-bottom: 40px;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(5px);
}

.category h2 {
    color: var(--secondary-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--accent-color);
}

.links-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.link-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.link-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.link-card a {
    display: flex;
    align-items: center;
    padding: 15px;
    color: var(--text-color);
    text-decoration: none;
}

.link-card img {
    width: 32px;
    height: 32px;
    margin-right: 15px;
    border-radius: 4px;
}

.link-info h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--secondary-color);
}

.link-info p {
    font-size: 0.9rem;
    color: #666;
}

.link-card.disabled {
    opacity: 0.8;
    cursor: default;
}

.link-card.disabled a {
    pointer-events: none;
    /* 禁用所有鼠标交互 */
}

footer {
    text-align: center;
    padding: 20px 0;
    color: #ffffff;
    font-size: 0.9rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .links-container {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 2rem;
    }

    header p {
        font-size: 1rem;
    }
}


/* 现代化公告设计 */
.modern-announcement {
    display: flex;
    margin-bottom: 30px;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.97), rgba(255, 255, 255, 0.93));
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(8px);
    border-left: 5px solid var(--mocha-mousse);
    width: 100%;
    box-sizing: border-box;
    align-items: stretch;
    /* 改为stretch让子元素拉伸以填充容器高度 */
}

.announcement-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-color: rgba(165, 120, 101, 0.1);
    color: var(--mocha-mousse);
    /* 移除固定高度，让它自动跟随父容器 */
}

.announcement-icon i {
    font-size: 28px;
}

.announcement-images {
    display: flex;
    flex-direction: row;
    /* 图片水平排列 */
    justify-content: center;
    align-items: center;
    padding: 10px;
    gap: 10px;
    /* 图片之间的间距 */
}

.announcement-image {
    max-width: 180px;
    /* 最大宽度 */
    height: auto;
    /* 高度自动根据宽度调整 */
    border-radius: 5px;
}

.announcement-main {
    flex: 1;
    padding: 15px 20px;
    display: flex;
    flex-direction: column;
}

.announcement-main h3 {
    margin: 0 0 10px 0;
    color: var(--mocha-mousse);
    font-size: 1.2rem;
}

.announcement-message {
    margin-bottom: 10px;
    line-height: 1.5;
}

.announcement-meta {
    display: flex;
    font-size: 0.8rem;
    color: #777;
    margin-top: auto;
    /* 将meta推到底部 */
}

.announcement-time,
.announcement-author {
    margin-right: 15px;
    display: flex;
    align-items: center;
}

.announcement-meta i {
    margin-right: 5px;
    font-size: 0.9rem;
}

/* 添加媒体查询实现移动端自适应 */
@media (max-width: 768px) {
    .modern-announcement {
        flex-direction: column;
        /* 在移动端改为垂直布局 */
    }

    .announcement-icon {
        height: auto;
        width: 100%;
        padding: 15px;
    }

    .announcement-images {
        justify-content: center;
        width: 100%;
        padding: 15px 10px;
    }

    .announcement-image {
        max-width: 120px;
        /* 移动端图片更小 */
    }

    .announcement-main {
        width: 100%;
        padding: 15px;
    }

    .announcement-meta {
        flex-wrap: wrap;
        /* 允许换行 */
    }
}