:root {
    --primary: #1a6b54;
    --secondary: #2c8c76;
    --accent: #f9a825;
    --light: #e8f4f0;
    --dark: #0d3b2e;
    --text: #333333;
    --border: rgba(13, 59, 46, 0.1);
    --code-bg: rgba(13, 59, 46, 0.05);
    --shadow: 0 4px 12px rgba(13, 59, 46, 0.08);
}

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

.content-container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 20px;
}

body {
    font-family: 'Roboto', 'Noto Sans SC', sans-serif;
    color: var(--text);
    line-height: 1.7;
    background: linear-gradient(135deg, #e8f4f0 0%, #d1e8e2 100%);
    overflow-x: hidden;
    margin: 0 auto;
}

.content-container a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

.content-container a:hover {
    color: #e69500;
    text-decoration: underline;
}

/* 文档容器样式 */
.markdown-container {
    background-color: rgba(255, 255, 255, 0.85);
    border-radius: 12px;
    padding: 40px;
    margin: 30px 0;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    backdrop-filter: blur(4px);
}

/* 标题样式 */
.content-container h1,
.content-container h2,
.content-container h3,
.content-container h4,
.content-container h5,
.content-container h6 {
    color: var(--dark);
    margin: 1.5em 0 0.8em;
    font-weight: 600;
    position: relative;
}

.content-container h1 {
    font-size: 2.2rem;
    border-bottom: 2px solid var(--primary);
    padding-bottom: 10px;
}

.content-container h2 {
    font-size: 1.8rem;
    padding-left: 12px;
    border-left: 4px solid var(--accent);
}

.content-container h3 {
    font-size: 1.5rem;
    color: var(--primary);
}

/* 段落样式 */
.content-container p {
    margin-bottom: 1.2rem;
    text-align: justify;
}

/* 列表样式 */
.content-container ul,
.content-container ol {
    margin: 1.2rem 0;
    padding-left: 2rem;
}

.content-container li {
    margin-bottom: 0.6rem;
}

.content-container ul li::marker {
    color: var(--accent);
}

.content-container ol li::marker {
    color: var(--primary);
    font-weight: 500;
}

/* 代码块样式 */
.content-container pre {
    background-color: var(--code-bg);
    border-radius: 8px;
    padding: 18px;
    margin: 1.5rem 0;
    overflow-x: auto;
    border: 1px solid var(--border);
}

.content-container code {
    font-family: 'Fira Code', monospace;
    background-color: var(--code-bg);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.95em;
}

.content-container pre code {
    background: none;
    padding: 0;
    border-radius: 0;
}

/* 引用样式 */
.content-container blockquote {
    background-color: rgba(232, 244, 240, 0.5);
    border-left: 4px solid var(--primary);
    padding: 1.2rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.content-container blockquote p {
    margin: 0;
    color: var(--dark);
    font-style: italic;
}

/* 表格样式 */
.content-container table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.content-container th,
.content-container td {
    padding: 0.8rem 1.2rem;
    text-align: left;
    border: 1px solid var(--border);
}

.content-container th {
    background-color: var(--primary);
    color: white;
    font-weight: 500;
}

.content-container tr:nth-child(even) {
    background-color: var(--light);
}

/* 图片样式 */
.content-container img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    display: block;
    box-shadow: var(--shadow);
}

/* 分割线样式 */
.content-container hr {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--primary), transparent);
    margin: 2.5rem 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .content-container h1 {
        font-size: 1.8rem;
    }

    .content-container h2 {
        font-size: 1.5rem;
    }

    .content-container h3 {
        font-size: 1.3rem;
    }
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin: 0 auto;
    max-width: 1200px;
    padding: 0 20px;
}

.gallery-item {
    background: #fff;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.3s, transform 0.3s;
    position: relative;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
    margin: 0;
    /* 去除图片顶部空隙 */
    border-radius: 0;
    box-shadow: none;
    transition: transform 0.3s;
}

.gallery-item .gallery-caption {
    position: relative;
    padding: 16px 18px 14px 18px;
    font-size: 1.08rem;
    color: #222;
    background: rgba(255, 255, 255, 0.92);
    text-align: center;
    font-weight: 500;
    letter-spacing: 0.5px;
    border-radius: 0 0 18px 18px;
    transition: color 0.3s;
    z-index: 2;
}

/* 悬浮效果优化 */
.gallery-item:hover {
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.10);
    transform: translateY(-6px) scale(1.025);
}

.gallery-item:hover img {
    transform: scale(1.04);
}

.gallery-item:hover .gallery-caption {
    min-height: 48px;
    /* 你可以根据实际字体大小调整 */
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0077b6;
    background: rgba(255, 255, 255, 0.98);
}

.gallery-caption-overlay {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 60%;
    min-height: 60px;
    background: rgba(20, 20, 20, 0.68);
    color: #fff;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    padding: 18px 18px 12px 18px;
    font-size: 1rem;
    font-weight: 400;
    text-align: center;
    z-index: 3;
    transition: opacity 0.35s, transform 0.35s;
    transform: translateY(-30px);
    border-radius: 0 0 18px 18px;
    box-sizing: border-box;
}

.gallery-item:hover .gallery-caption-overlay,
.gallery-item:focus-within .gallery-caption-overlay {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

/* 响应式调整 - 重点优化移动端 */
@media (min-width: 1200px) {
    .gallery-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 900px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 15px;
    }
}

/* 移动端布局 - 重点调整 */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        /* 确保一行两列 */
        gap: 15px;
        margin: 30px auto 0;
        max-width: 100%;
        /* 移除最大宽度限制 */
    }

    .gallery-item {
        display: flex;
        flex-direction: column;
        aspect-ratio: 3/4.2;
        min-height: 0;
    }

    .gallery-item img {
        flex: 1 1 0%;
        width: 100%;
        height: auto;
        min-height: 0;
        object-fit: cover;
        display: block;
    }

    .section-title {
        font-size: 1.5rem;
        margin: 2rem 0 1rem;
    }

    .gallery-caption {
        min-height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 10px;
        font-size: 0.8rem;
        background: rgba(255,255,255,0.92);
        border-radius: 0 0 18px 18px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    .gallery-grid {
        gap: 12px;
        /* 减小间隙 */
        padding: 0 10px;
        /* 添加内边距避免贴边 */
    }

    .gallery-item {
        aspect-ratio: 3/4.5;
        /* 进一步调整高度比例 */
    }

    .gallery-caption {
        padding: 8px;
        font-size: 0.75rem;
    }
}

/* 极窄屏幕优化 */
@media (max-width: 360px) {
    .gallery-grid {
        grid-template-columns: repeat(2, minmax(140px, 1fr));
        /* 确保小屏幕也能两列 */
        gap: 10px;
    }

    .gallery-caption {
        font-size: 0.7rem;
        padding: 6px;
    }
}

.gallery-item.show-overlay .gallery-caption-overlay {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

/* 视频容器样式 */
.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 纵横比 */
    height: 0;
    margin: 1.5rem 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.video-container iframe,
.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 8px;
}

/* 文件下载链接样式 */
.file-download {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    margin: 1rem 0;
    background-color: var(--light);
    border-left: 4px solid var(--primary);
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.file-download:hover {
    background-color: rgba(232, 244, 240, 0.8);
}

.file-icon {
    margin-right: 12px;
    font-size: 1.5rem;
    color: var(--primary);
}

.file-info {
    flex-grow: 1;
}

.file-name {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.file-meta {
    font-size: 0.85rem;
    color: #666;
}

.file-download-link {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--primary);
    color: white;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.file-download-link:hover {
    background-color: var(--secondary);
    color: white;
    text-decoration: none;
}