/* ==========================================================================
   古典报纸风格学术个人空间样式表 (Complete Vintage Chronicle Theme)
   ========================================================================== */

/* 核心色彩与排版变量 */
:root {
    --ink: #1c1a17;           /* 古典浓墨黑 */
    --paper: #faf8f2;         /* 羊皮纸白（护眼温润背景） */
    --paper-tint: #ebe6d8;    /* 复古报纸阴影与高亮色 */
    --border-ink: #1c1a17;    /* 墨线边框 */
    --text-muted: #5c5850;    /* 铅印灰色（用于辅助说明） */
    /* 采用高雅学术气质的衬线字体库，中英文完美匹配 */
    --font-serif: "Georgia", "Times New Roman", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
}

/* 基础重置与全局样式 */
body {
    font-family: var(--font-serif);
    background-color: var(--paper);
    color: var(--ink);
    line-height: 1.8;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

a {
    color: var(--ink);
    text-decoration: underline;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--text-muted);
}

/* ==========================================================================
   一、 报纸头部设计 (Masthead Banner)
   ========================================================================== */
.newspaper-header {
    border-bottom: 5px double var(--border-ink); /* 双实线装帧 */
    padding: 25px 0 15px 0;
    text-align: center;
}

.meta-top {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-ink);
    padding-bottom: 5px;
    margin-bottom: 15px;
}

.masthead-main h1 {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 900;
    margin: 10px 0;
    letter-spacing: -1px;
    text-transform: uppercase;
}

.masthead-main h1 a {
    color: var(--ink);
    text-decoration: none;
}

.masthead-main .subtitle {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin: 0 0 15px 0;
}

.meta-bottom {
    border-top: 1px solid var(--border-ink);
    padding-top: 5px;
    margin-top: 15px;
}

/* 版面分割大标题 */
.section-title {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 800;
    border-top: 2px solid var(--border-ink);
    border-bottom: 1px solid var(--border-ink);
    padding: 4px 0;
    margin-top: 0;
    margin-bottom: 20px;
    text-align: center;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   二、 研究项目展示 (上置 / 1:1 正方形网格 / 手机友好)
   ========================================================================== */
.project-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 电脑端默认强制一排 4 个 */
    gap: 12px;
    margin-bottom: 40px;
}

.project-btn {
    display: block;
    aspect-ratio: 1 / 1;          /* 强制保持绝对 1:1 正方形 */
    border: 1px solid var(--border-ink);
    background-color: var(--paper-tint);
    position: relative;
    text-decoration: none;
    box-sizing: border-box;
    transition: background-color 0.15s ease, transform 0.1s ease;
}

.project-btn:hover {
    background-color: var(--ink);
}

.project-btn:hover .proj-title, 
.project-btn:hover .proj-tag {
    color: var(--paper);
}

.btn-inner {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 15px 12px;
    text-align: left;
}

.proj-tag {
    font-size: 0.75rem;
    font-weight: bold;
    letter-spacing: 1px;
    border: 1px solid var(--border-ink);
    padding: 1px 5px;
    width: fit-content;
    color: var(--ink);
}

.proj-title {
    font-size: 0.92rem;
    font-weight: 800;
    line-height: 1.3;
    color: var(--ink);
    word-break: break-all;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 针对移动端触摸精准适配：强制一排 3 个，缩小空隙与字体，保持正方形便于大拇指点击 */
@media (max-width: 768px) {
    .project-grid {
        grid-template-columns: repeat(3, 1fr); /* 手机端强制 3 列 */
        gap: 8px;
    }
    .btn-inner {
        padding: 8px;
    }
    .proj-title {
        font-size: 0.78rem;
    }
    .proj-tag {
        font-size: 0.6rem;
        padding: 0 3px;
    }
}

/* ==========================================================================
   三、 经典报纸分栏布局 (Editorial Layout)
   ========================================================================== */
.editorial-layout {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}

/* 左栏：陈述与荣誉图片 */
.editorial-left {
    flex: 1.4;
    border-right: 1px solid var(--border-ink);
    padding-right: 30px;
}

/* 右栏：文章列表 */
.editorial-right {
    flex: 1;
}

.biography {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 30px;
    text-align: justify;
}

@media (max-width: 768px) {
    .editorial-layout {
        flex-direction: column;
    }
    .editorial-left {
        border-right: none;
        padding-right: 0;
    }
}

/* ==========================================================================
   四、 荣誉图片画廊 (大大小小不对称排版：1大9小)
   ========================================================================== */
.photo-journal-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 默认三列排版 */
    grid-auto-rows: 130px;                /* 控制标准网格的单元格高度 */
    gap: 12px;
    margin: 20px 0;
}

.photo-item {
    background: #fff;
    border: 1px solid var(--border-ink);
    padding: 6px;
    cursor: pointer;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    grid-column: span 1;
    grid-row: span 1;
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 采用高质感报纸油墨复古灰度过滤效果，悬停还原色彩 */
    filter: grayscale(100%) contrast(115%);
    transition: filter 0.2s ease;
}

.photo-item:hover img {
    filter: none;
}

.photo-item .caption {
    font-size: 0.75rem;
    font-style: italic;
    text-align: center;
    margin-top: 4px;
    color: #333;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 核心逻辑：当前分页画廊里的第 1 个元素作为主要插图，强制放大占 2行*2列 */
.photo-item:first-child {
    grid-column: span 2;
    grid-row: span 2;
}

/* 手机端画廊自适应调整 */
@media (max-width: 600px) {
    .photo-journal-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 100px;
        gap: 8px;
    }
    .photo-item:first-child {
        grid-column: span 2;
        grid-row: span 2;
    }
}

/* ==========================================================================
   五、 学术动态文章列表 (Chronicle List)
   ========================================================================== */
.dispatch-item {
    border-bottom: 1px dashed var(--border-ink);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.dispatch-date {
    font-size: 0.8rem;
    font-weight: bold;
    color: var(--text-muted);
}

.dispatch-item h3 {
    margin: 5px 0;
    font-size: 1.15rem;
    font-weight: 800;
}

.dispatch-item h3 a {
    color: var(--ink);
    text-decoration: none;
}

.dispatch-item h3 a:hover {
    text-decoration: underline;
}

.dispatch-category {
    display: inline-block;
    border: 1px solid var(--border-ink);
    padding: 0 6px;
    font-size: 0.72rem;
    font-weight: bold;
    margin-bottom: 8px;
    background-color: var(--paper-tint);
}

.dispatch-summary {
    font-size: 0.9rem;
    color: #444;
    margin: 5px 0 0 0;
    line-height: 1.6;
}

/* ==========================================================================
   六、 文章阅读页 (Article Reading Page)
   ========================================================================== */
.newspaper-reading .back-link {
    font-weight: bold;
    font-size: 0.85rem;
    margin-bottom: 20px;
    display: inline-block;
}

.story-title {
    font-size: 2.2rem;
    font-weight: 900;
    margin: 0 0 10px 0;
    line-height: 1.2;
}

.story-meta {
    font-weight: bold;
    font-size: 0.85rem;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-ink);
    padding-bottom: 10px;
}

.story-meta .category {
    color: var(--text-muted);
}

.story-body {
    font-size: 1.15rem;
    line-height: 1.9;
}

.story-body h1, .story-body h2, .story-body h3 {
    margin-top: 25px;
    margin-bottom: 10px;
    font-weight: bold;
}

.story-body ul {
    padding-left: 20px;
    margin-bottom: 15px;
}

.story-body li {
    margin-bottom: 5px;
}

/* 空白提示样式 */
.no-data {
    text-align: center;
    font-style: italic;
    color: var(--text-muted);
    padding: 20px 0;
}

/* ==========================================================================
   七、 古典纸媒风翻页栏 (Newspaper Pagination)
   ========================================================================== */
.newspaper-pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 4px double var(--border-ink); /* 复古双线 */
    border-bottom: 1px solid var(--border-ink);
    padding: 8px 4px;
    margin: 25px 0;
    font-family: var(--font-serif);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.newspaper-pagination a {
    text-decoration: none;
    color: var(--ink);
    border: 1px solid var(--border-ink);
    padding: 2px 8px;
    background-color: var(--paper-tint);
    transition: all 0.15s ease;
}

.newspaper-pagination a:hover {
    background-color: var(--ink);
    color: var(--paper);
    text-decoration: none;
}

.newspaper-pagination span {
    color: var(--text-muted);
    text-transform: uppercase;
}

.newspaper-pagination span.disabled {
    color: #b8b3a7;
    border: 1px solid #dcd7ca;
    padding: 2px 8px;
    cursor: not-allowed;
}

/* ==========================================================================
   八、 原生大图放大模态层 (Lightbox Overlay)
   ========================================================================== */
.lightbox {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(28, 26, 23, 0.96); /* 墨黑色半透明底 */
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    cursor: zoom-out;
}

.lightbox.active {
    display: flex;
}

.lightbox img {
    max-width: 90%;
    max-height: 80%;
    border: 4px solid var(--paper);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    color: var(--paper);
    margin-top: 15px;
    font-size: 1rem;
    font-family: var(--font-serif);
    font-style: italic;
}

.lightbox-close {
    position: absolute;
    top: 20px; right: 30px;
    color: #fff;
    font-size: 3rem;
    cursor: pointer;
}

/* ==========================================================================
   九、 页脚排版 (Site Footer)
   ========================================================================== */
.site-footer {
    border-top: 4px double var(--border-ink); /* 双线 */
    padding: 30px 0;
    text-align: center;
    font-size: 0.85rem;
    font-weight: bold;
    margin-top: 60px;
    background-color: var(--paper-tint);
}

.site-footer p {
    margin: 3px 0;
}