/* ============================================================
   modern.css v2 — UI 样式覆盖层
   全部为 CSS 覆盖，默认跟随 bootstrap.min.css
   ============================================================ */

/* ---------- 1. 品牌色板 ---------- */
:root {
    --cardinal: #8C1515;        /* 主红 */
    --cardinal-light: #B83A4B;
    --cardinal-dark: #820000;
    --digital-red: #B1040E;     /* 链接交互红 */
    --cardinal-hover: #541107;  /* 导航悬停 */
    --cardinal-50: #FBF4F4;     /* 浅红底（仅 hover） */
    --stanford-black: #2E2D29;  /* 墨色 */
    --cool-grey: #53565A;       /* Cool Grey 11C */
    --grey-tint: #F4F4F4;       /* Fog（页面底） */
    --grey-line: #E3E1DD;
    --white: #FFFFFF;
    --ink: var(--stanford-black);
    --ink-2: var(--cool-grey);
    --shadow-card: 0 1px 3px rgba(46,45,41,.04), 0 6px 24px rgba(46,45,41,.07);
    --shadow-card-hover: 0 2px 6px rgba(46,45,41,.06), 0 12px 32px rgba(46,45,41,.12);
    --radius: 8px;
    --radius-sm: 5px;
    --grad-brand: linear-gradient(220.7deg, #B1040E 12.15%, #8C1515 88.45%);
    --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", sans-serif;
}

/* ---------- 2. 基础层 ---------- */
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    color: var(--ink);
    background: var(--grey-tint);
    -webkit-font-smoothing: antialiased;
}
a { color: var(--digital-red); transition: color .18s ease, background-color .18s ease, border-color .18s ease; }
a:hover { color: var(--cardinal-dark); }
.container { max-width: 1200px; }
body > .container { padding-top: 10px; padding-bottom: 40px; }
header img, a > img.img-fluid { display: block; }

/* ---------- 3. 导航：去表格化（单一强调：红下划线） ---------- */
.nav-pills { margin: 10px -4px !important; }
.nav-pills .nav-item { padding: 0 2px; min-width: 96px; }
.nav-pills .nav-link {
    color: var(--ink) !important;
    font-size: 15.5px;
    font-weight: 500;
    letter-spacing: .02em;
    padding: 12px 10px 13px !important;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0 !important;
    border-bottom: 2px solid transparent;
    background: transparent !important;
    transition: color .18s, border-color .18s, background-color .18s;
}
.nav-pills .nav-link:hover {
    color: var(--cardinal) !important;
    background: var(--cardinal-50) !important;
    border-bottom-color: var(--cardinal-light);
}
/* 激活态：仅红字 + 底部红下划线（无底色无竖条，单一强调） */
.nav-pills .nav-link.active,
.nav-pills .show > .nav-link {
    color: var(--cardinal) !important;
    background: transparent !important;
    border-bottom: 2px solid var(--cardinal) !important;
    font-weight: 600;
}
/* 下拉小 V（border 画法；消灭 Bootstrap 默认实心三角，恒不随开合变形） */
.nav-pills .dropdown-toggle::after {
    content: "" !important;
    display: inline-block !important;
    width: 6px !important; height: 6px !important;
    border-right: 1.6px solid var(--ink-2) !important;
    border-bottom: 1.6px solid var(--ink-2) !important;
    border-top: 0 !important; border-left: 0 !important;
    background: transparent !important;
    transform: rotate(45deg) !important;
    vertical-align: 2px;
    margin-left: 6px;
    transition: border-color .18s;
}
.nav-pills .nav-link:hover.dropdown-toggle::after,
.nav-pills .nav-link.active.dropdown-toggle::after { border-color: var(--cardinal); }
/* 图标恒为 V：不随开合变形 */
.dropdown-menu {
    border: 1px solid var(--grey-line);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card);
    padding: 6px 0 !important;
    margin-top: 4px;
}
.dropdown-item {
    font-size: 14.5px; color: var(--ink); padding: 9px 22px;
    transition: background-color .15s, color .15s;
}
.dropdown-item:hover { background: var(--cardinal-50); color: var(--cardinal); }

/* 移动端：单列清单式（彻底去 2×4 格子表格） */
@media (max-width: 991.98px) {
    .nav-pills .dropdown-menu { border-radius: var(--radius); box-shadow: var(--shadow-card-hover); }
    .dropdown-item { padding: 12px 24px; font-size: 15px; }
}
@media (max-width: 575.98px) {
    .nav-pills {
        display: block !important;
        margin: 8px 0 0 !important;
        background: var(--white);
        border: 1px solid var(--grey-line);
        border-radius: var(--radius);
        box-shadow: var(--shadow-card);
        overflow: hidden;
    }
    .nav-pills .nav-item {
        display: block;
        width: 100%;
        padding: 0;
        background: transparent;
        border-bottom: 1px solid var(--grey-line);
    }
    .nav-pills .nav-item:last-child { border-bottom: 0; }
    .nav-pills .nav-link {
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-radius: 0 !important;
        border-bottom: 0;
        box-shadow: none;
        padding: 13px 16px !important;
        font-size: 15px;
    }
    .nav-pills .nav-link:hover { background: var(--cardinal-50) !important; }
    .nav-pills .nav-link.active,
    .nav-pills .show > .nav-link {
        background: var(--cardinal-50) !important;
        box-shadow: inset 3px 0 0 var(--cardinal) !important;
    }
    .nav-pills .nav-link:not(.dropdown-toggle) { justify-content: flex-start; }
    .nav-pills .nav-link:not(.dropdown-toggle)::after {
        content: "\203A";
        color: #C9C5C0;
        font-weight: 700;
        width: auto; height: auto;
        border: 0;
        background: none;
        transform: none;
        margin-left: auto;
    }
    .nav-pills .nav-link.active:not(.dropdown-toggle),
    .nav-pills .show > .nav-link:not(.dropdown-toggle) {
        box-shadow: inset 4px 0 0 var(--cardinal) !important;
    }
    .nav-pills .dropdown-toggle::after { margin-left: auto; }
    .nav-pills .dropdown-menu {
        position: static !important;
        transform: none !important;
        width: 100%;
        max-height: none;
        border: 0;
        border-top: 1px solid var(--grey-line);
        border-radius: 0;
        box-shadow: none;
        margin: 0;
    }
    .dropdown-item { padding: 11px 34px; }
}

/* ---------- 4. 品牌红线 → 官方渐变（双条件匹配，避免误伤同色页脚） ---------- */
div[style*="height: 2px"][style*="136, 17, 21"],
div[style*="height: 2px"][style*="136,17,21"] {
    height: 3px !important;
    background: var(--grad-brand) !important;
}

/* ---------- 5. 卡片体系 ---------- */
.card {
    background: var(--white) !important;
    border: 1px solid var(--grey-line) !important;
    border-radius: var(--radius) !important;
    box-shadow: var(--shadow-card);
}
.card[style*="min-height"] { min-height: 0 !important; }  /* 空内容不再撑高 */
.card-header {
    background: transparent !important;
    border-bottom: 1px solid var(--grey-line) !important;
    padding: 14px 20px 12px !important;
}
.card-body { padding: 18px 20px !important; }
.card-footer { border-top: 1px solid var(--grey-line); }

/* ---------- 6. 模块标题条：红竖线 + 现代箭头 ---------- */
.card-header h6 {
    font-size: 19px !important;
    font-weight: 600 !important;
    color: var(--ink) !important;
    position: relative;
    padding-left: 14px !important;
    margin: 0 !important;
}
.card-header h6::before {
    content: "";
    position: absolute; left: 0; top: 50%;
    transform: translateY(-50%);
    width: 5px; height: 18px;
    border-radius: 2.5px;
    background: var(--grad-brand);
}
.card-header .more { font-size: 0 !important; color: var(--digital-red) !important; white-space: nowrap; }
.card-header .more::after {
    content: "更多 \2192";
    font-size: 13.5px;
    font-weight: 500;
    letter-spacing: .02em;
}
.card-header .more:hover { color: var(--cardinal-dark) !important; }

/* ---------- 7. 列表条目 ---------- */
.list-group-item {
    border-bottom: 1px solid var(--grey-line) !important;
    padding: 13px 4px !important;
    transition: background-color .15s;
}
.list-group-item:last-child { border-bottom: 0 !important; }
.list-group-item:hover { background: var(--cardinal-50); }
.list-group-item .mx-2 { display: none; }
/* 日期统一收敛为灰（压过内联 !important：日期红 → 灰，红色收束） */
.list-group-item .text-danger,
.list-group-item span.text-danger[style],
.list-group-item span[style*="8c1515"],
.list-group-item span[style*="#8c1515"],
.list-group-item span[style*="color: rgb(140"] {
    color: var(--ink-2) !important;
    font-size: 13px !important;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    letter-spacing: .01em;
    min-width: 56px !important;
    width: auto !important;
}
.list-group-item div[style*="width: 85px"] { width: auto !important; min-width: 62px !important; }
.list-group-item .text-truncate {
    white-space: normal !important;
    overflow: hidden !important;
    text-overflow: clip !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    color: var(--ink) !important;
    font-size: 14.5px;
    line-height: 1.55;
    transition: color .15s;
}
.list-group-item:hover .text-truncate { color: var(--cardinal) !important; }

/* ---------- 8. 首页图片新闻 ---------- */
.news-image-container { border-radius: var(--radius-sm); overflow: hidden; }
.news-image { transition: transform .5s ease; }
a:hover .news-image { transform: scale(1.04); }
.card-body p.text-muted { color: var(--ink) !important; font-size: 14px; }
a:hover p.text-muted { color: var(--cardinal) !important; }
/* 左列图文卡与右列列表等高对齐（修空旷） */
@media (min-width: 768px) {
    .card-body .row.mx-0 { align-items: stretch; }
    .card-body .col-md-8 .row { height: 100%; }
    .card-body .col-md-8 .col-sm-4 { display: flex; flex-direction: column; }
    .card-body .col-md-8 .col-sm-4 a { flex: 1; display: flex; flex-direction: column; }
    .card-body .col-md-8 .col-sm-4 .news-image-container { flex: 1; min-height: 0; padding-bottom: 0; }
    .card-body .col-md-8 .col-sm-4 .news-image { height: 100%; }
    .card-body .col-md-4 { display: flex; flex-direction: column; }
    .card-body .col-md-4 .list-group { flex: 1; display: flex; flex-direction: column; justify-content: space-between; }
}

/* ---------- 9. 轮播 ---------- */
.carousel { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-card); }
.carousel-caption {
    background: linear-gradient(transparent, rgba(20,8,8,.78));
    left: 0; right: 0; bottom: 0;
    padding: 40px 24px 18px;
    text-align: left;
}
.carousel-caption h3 { font-size: 20px; font-weight: 600; }
.carousel-caption p { font-size: 14px; margin-bottom: 0; opacity: .92; }

/* ---------- 10. 文章页（通知/新闻/下载正文） ---------- */
.news-article-card .card-header {
    padding: 16px 24px 14px !important;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--grey-line) !important;
}
.article-header-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: .01em;
    line-height: 1.5;
}
.news-article-card .card-header .font-weight-lighter {
    color: var(--ink-2) !important;
    font-size: 13.5px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}
.news-article-card .card-body { padding: 22px 26px 28px !important; }
.news-article-card .normal_paragraph {
    font-family: var(--font-sans);
    font-size: 15.5px;
    line-height: 1.9;
    color: var(--ink);
    margin: .9em 0 0 0 !important;
    text-align: justify;
}
.news-article-card iframe {
    border: 1px solid var(--grey-line);
    border-radius: var(--radius-sm);
    background: var(--white);
    margin-top: 8px;
    max-width: 100%;
}

/* 下载链接：按钮化（文件名墨色、[点击下载]独立红按钮，红色收束） */
.news-article-card a[download] {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 12px;
    color: var(--ink) !important;
    font-size: 15px;
    line-height: 1.8;
    padding: 14px 18px;
    margin: 6px 0;
    border: 1px solid var(--grey-line);
    border-radius: var(--radius-sm);
    background: var(--white);
    box-shadow: 0 1px 2px rgba(46,45,41,.04);
    text-decoration: none;
    overflow-wrap: anywhere;
    transition: border-color .18s, box-shadow .18s;
}
.news-article-card a[download]:hover {
    border-color: var(--cardinal-light);
    box-shadow: var(--shadow-card);
}
.news-article-card a[download] span[style*="d40e0e"] {
    color: var(--digital-red);
    font-weight: 600;
    white-space: nowrap;
    padding: 3px 16px;
    border: 1px solid var(--cardinal);
    border-radius: 999px;
    background: var(--white);
    margin-left: auto;
    font-size: 0;
    transition: background-color .18s, border-color .18s, box-shadow .18s;
}
.news-article-card a[download] span[style*="d40e0e"]::after {
    content: "点击下载";
    font-size: 13.5px;
    letter-spacing: .06em;
}
.news-article-card a[download]:hover span[style*="d40e0e"] {
    background: var(--cardinal);
    color: #fff;
}
.news-article-card a[download]:hover span[style*="d40e0e"]::after { color: #fff; }
.news-article-card a[download] span[style*="8c1515"] {
    font-variant-numeric: tabular-nums;
    color: var(--ink-2) !important;
    margin-right: 2px;
}

/* ---------- 11. 页脚 ---------- */
footer .card-footer,
.card-footer[style*="136, 17, 21"], .card-footer[style*="136,17,21"] {
    background: var(--cardinal-dark) !important;
    padding: 16px 20px !important;
    height: auto !important;
    min-height: 0 !important;
}
.card-footer[style*="136, 17, 21"] p, .card-footer[style*="136,17,21"] p {
    color: rgba(255,255,255,.82) !important;
    font-size: 13px;
    letter-spacing: .03em;
    margin: 0;
}
.card-body a.text-muted { color: var(--cool-grey) !important; overflow-wrap: anywhere; }
.card-body a.text-muted:hover { color: var(--cardinal) !important; text-decoration: none; }
.card-body span a.text-muted { display: inline-block; margin: 0 18px 6px 0; white-space: nowrap; }
.card-body p { overflow-wrap: anywhere; }

/* ---------- 12. 表格（科研数据页） ---------- */
.table th {
    background: var(--cardinal) !important;
    color: #fff !important;
    font-weight: 500;
    border-bottom: 0 !important;
    white-space: nowrap;
}
.table thead th { border-color: rgba(255,255,255,.12) !important; }
.table td { color: var(--ink); vertical-align: middle; }
.table-hover tbody tr:hover td { background: var(--cardinal-50) !important; }

/* ---------- 13. 细节质感 ---------- */
::selection { background: var(--cardinal); color: #fff; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--grey-tint); }
::-webkit-scrollbar-thumb { background: #C9C5C0; border-radius: 5px; border: 2px solid var(--grey-tint); }
::-webkit-scrollbar-thumb:hover { background: var(--cool-grey); }
.text-muted { color: var(--cool-grey) !important; }
h1, h2, h3, h4, h5, h6 { color: var(--ink); }

/* ---------- 14. 动效偏好尊重 ---------- */
@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; }
    .news-image { transform: none !important; }
}

/* ---------- 15. 无障碍跳转链接 ---------- */
a.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--cardinal);
    color: #fff;
    padding: 8px 16px;
    border-radius: 0 0 4px 0;
    z-index: 2000;
}
a.skip-link:focus {
    left: 0;
}

/* ---------- 16. 页脚友情链接网格 ---------- */
ul.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 2rem;
    row-gap: 0.5rem;
    font-size: small;
}
ul.footer-links li { min-width: 0; }
ul.footer-links a { display: inline-block; }
@media (max-width: 767.98px) {
    ul.footer-links { grid-template-columns: 1fr; row-gap: 0.4rem; }
}

/* ---------- 17. 页脚三件套链接行（版权栏居中版） ---------- */
p.footer-trinity {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.8rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}
.card-footer p.footer-trinity a,
.card-footer p.footer-trinity span {
    color: rgba(255,255,255,.72);
}
.card-footer p.footer-trinity a:hover {
    color: #fff;
    text-decoration: none;
}
.card-footer p.footer-trinity a { display: inline-flex; align-items: center; }
.card-footer p.footer-trinity a img {
    margin-right: 0.35rem;
    margin-top: -0.125rem;
    border-radius: 3px;
}

/* ---------- 18. 首页双面板（通知公告/文件下载）等高对齐 ---------- */
@media (min-width: 768px) {
    .home-panels > .col-md-6 {
        display: flex;
        flex-direction: column;
    }
    .home-panels > .col-md-6 > .card {
        flex: 1;
    }
}