/* ===== 首页 8 区块（需求五） ===== */

/* 首页焦点轮播（3 个幻灯片位置；固定高度：桌面 300px / 窄屏 250px，不随视口宽度变高）。
   banner2/banner3 为 1920x444 证书横幅：在固定高度内改用 contain 等比缩小整图，
   证书花纹边框与底部印章完整显示、不裁切；两侧空隙由深蓝底色填充。
   banner1 为 1900x300 纯图，仍按 cover 铺满。 */
.hero-slides { position:relative; height:300px; overflow:hidden; background:var(--c-primary-dark); border-radius:10px 10px 0 0; }
/* 通栏版（index.html 的 frame-sec--full）：轮播与投稿通道拉伸到屏幕两侧，不再受内容区限宽。
   底图与渐变背景全宽；圆角去掉（贴边后圆角会露底色）；
   幻灯文字与投稿通道内部内容仍按站点内容区（1200px）居中对齐，窄屏回落为 20px 边距。 */
.frame-sec--full .hero-slides, .frame-sec--full .submit-strip { border-radius:0; }
.frame-sec--full .slide-content { margin-left:max(20px, calc((100% - var(--maxw)) / 2 + 20px)); padding-right:20px; }
.frame-sec--full .submit-inner { max-width:calc(var(--maxw) - 40px); margin:0 auto; }
/* 轨道撑满固定高度容器，幻灯片绝对定位叠放 */
.slide-track { position:relative; height:100%; }
.slide { position:absolute; inset:0; opacity:0; transition:opacity .6s ease; background-size:cover; background-position:center; display:flex; align-items:center; }
/* 证书类 banner：等比缩小整图，固定高度内完整显示（上下花纹边框与底部印章不再被 cover 切掉） */
.slide:not(.slide-plain) { background-size:contain; background-repeat:no-repeat; background-position:center; background-color:#0d2b57; }
.slide.active { opacity:1; z-index:1; }
.slide-mask { position:absolute; inset:0; background:linear-gradient(90deg, rgba(20,42,72,.42), rgba(20,42,72,.12)); }
.slide-content { position:relative; z-index:2; color:#fff; max-width:760px; }
.slide-kicker { display:inline-block; background:rgba(255,255,255,.18); border:1px solid rgba(255,255,255,.45); font-size:13px; padding:3px 13px; border-radius:20px; margin-bottom:14px; letter-spacing:1px; }
.slide-title { font-size:30px; margin:0 0 10px; font-weight:700; line-height:1.25; text-shadow:0 2px 8px rgba(0,0,0,.3); }
.slide-sub { font-size:16px; opacity:.95; margin:0 0 18px; line-height:1.7; }
.slide-btn { display:inline-block; background:#fff; color:var(--c-primary); padding:9px 24px; border-radius:6px; font-weight:600; text-decoration:none; transition:.2s; }
.slide-btn:hover { background:var(--c-soft); }
.slide-arrow { position:absolute; top:50%; transform:translateY(-50%); z-index:3; width:42px; height:42px; border:none; border-radius:50%; background:rgba(0,0,0,.32); color:#fff; font-size:24px; line-height:1; cursor:pointer; display:flex; align-items:center; justify-content:center; transition:.2s; }
.slide-arrow.prev { left:16px; } .slide-arrow.next { right:16px; }
.slide-arrow:hover { background:rgba(0,0,0,.55); }
.slide-dots { position:absolute; bottom:8px; left:50%; transform:translateX(-50%); z-index:3; display:flex; gap:7px; }
/* 无障碍：点击区 24x24（原 10x10），视觉圆点由 ::before 绘制，外观不变 */
.dot { width:24px; height:24px; border:none; background:transparent; cursor:pointer; padding:0; display:flex; align-items:center; justify-content:center; transition:.2s; }
.dot::before { content:''; display:block; width:10px; height:10px; border-radius:50%; background:rgba(255,255,255,.55); transition:.2s; }
.dot:hover::before { background:rgba(255,255,255,.85); }
.dot.active::before { background:#fff; width:22px; border-radius:6px; }

/* 公告合并板块：滚动条+卡片 同一板块 */
.notice-combo .notice-block { padding-bottom:18px; border-bottom:1px dashed var(--c-line); }
.notice-inner { display:flex; align-items:center; gap:14px; height:46px; overflow:hidden; }
.notice-label { background:var(--c-primary); color:#fff; font-size:13px; padding:4px 12px; border-radius:4px; white-space:nowrap; }
/* 检索：与「最新公告」标签同行，右对齐（margin-left:auto 推到行尾） */
.notice-search { display:flex; align-items:center; gap:8px; flex:none; margin-left:auto; }
.ns-box { display:flex; align-items:stretch; height:32px; border:1px solid #d0d8e2; border-radius:4px; background:#fff; overflow:hidden; }
.ns-field { border:0; outline:0; background:#f7f9fc; border-right:1px solid #e3e9f1; font-size:13px; color:var(--c-text); padding:0 6px 0 10px; cursor:pointer; font-family:inherit; }
.ns-input { border:0; outline:0; width:170px; font-size:13px; padding:0 10px; color:var(--c-text); font-family:inherit; }
.ns-input::placeholder { color:#a8b3c2; }
.ns-btn { border:0; background:#fff; color:var(--c-primary); width:38px; cursor:pointer; display:flex; align-items:center; justify-content:center; transition:.2s; }
.ns-btn:hover { background:var(--c-soft); }
.ns-adv { height:32px; line-height:30px; padding:0 13px; border:1px solid #d0d8e2; border-radius:4px; background:#fff; color:var(--c-text); font-size:13px; text-decoration:none; white-space:nowrap; transition:.2s; }
.ns-adv:hover { color:var(--c-primary); border-color:var(--c-primary); }

.section { padding:0; }
/* 导航栏以下各板块：独立成块，块间留白均匀；轮播+投稿通道保持连体 */
main > section { margin-top:10px; }
main > section.frame-sec + section.frame-sec { margin-top:0; }
.sec-head { display:flex; align-items:baseline; justify-content:space-between; margin-bottom:22px; border-left:4px solid var(--c-primary); padding-left:12px; }
.sec-head h2 { font-size:22px; margin:0; color:var(--c-primary); }
.sec-head .more { color:var(--c-primary); font-size:14px; text-decoration:none; }

.toc-list { display:flex; flex-direction:column; gap:14px; }
.toc-item { background:#fff; border:1px solid var(--c-line); border-radius:var(--radius); padding:16px 20px; }
.toc-tag { display:inline-block; background:var(--c-soft); color:var(--c-primary); font-size:12px; padding:2px 10px; border-radius:4px; margin-bottom:8px; }
.toc-item h3 { margin:0 0 6px; font-size:17px; }
.toc-item h3 a { color:var(--c-text); text-decoration:none; }
/* 无障碍：原 --c-muted(#7c8ba1) 在白底仅 3.46:1，13px 小字需 ≥4.5:1 */
.toc-meta { font-size:13px; color:#5b6a80; margin-bottom:8px; }
.toc-abstract { font-size:14px; color:#445; line-height:1.7; margin-bottom:8px; }
.toc-keywords { font-size:13px; color:var(--c-primary); }

.hot-grid { display:grid; grid-template-columns:1fr 1fr; gap:30px; }
.hot-col { background:#fff; border:1px solid var(--c-line); border-radius:var(--radius); padding:20px 24px; }
.hot-head { display:flex; align-items:center; justify-content:space-between; border-bottom:1px solid var(--c-line); margin-bottom:14px; padding-bottom:10px; }
.hot-head h3 { margin:0; border:0; padding:0; color:var(--c-primary); font-size:18px; }
.hot-more { font-size:13px; color:#5b6a80; text-decoration:none; white-space:nowrap; transition:.2s; }
.hot-more:hover { color:var(--c-primary); }
.hot-col h3 { margin:0 0 14px; color:var(--c-primary); font-size:18px; }
.rank-list { margin:0; padding-left:22px; }
.rank-list li { margin-bottom:10px; font-size:14px; line-height:1.5; }
.rank-list a { color:var(--c-text); text-decoration:none; }
.rank-views { margin-left:6px; color:#8a97a8; font-size:12px; font-weight:400; white-space:nowrap; }

/* 期刊荣誉：与友情链接同款无限横向滚动跑马灯；卡片 = 200x300 图片 + 文字（整卡可点击跳转详情） */
.db-marquee { overflow:hidden; -webkit-mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent); mask-image:linear-gradient(90deg,transparent,#000 4%,#000 96%,transparent); }
.db-track { display:flex; gap:14px; width:max-content; animation:db-scroll linear infinite; will-change:transform; }
.db-marquee:hover .db-track { animation-play-state:paused; }
@keyframes db-scroll { from { transform:translateX(0); } to { transform:translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .db-track { animation:none; } .db-marquee { overflow-x:auto; -webkit-mask-image:none; mask-image:none; } }
.db-item { flex:0 0 221px; width:221px; height:auto; box-sizing:border-box; background:#fff; border:1px solid var(--c-line); border-radius:var(--radius); padding:0; text-align:center; min-width:0; display:flex; flex-direction:column; align-items:stretch; justify-content:flex-start; overflow:hidden; box-shadow:var(--shadow); transition:.2s; }
.db-item:hover { transform:translateY(-3px); box-shadow:0 12px 26px rgba(26,58,108,.16); }
.db-img { width:100%; height:300px; flex:none; overflow:hidden; position:relative; background:#fff; border-bottom:1px solid var(--c-line); display:flex; align-items:center; justify-content:center; }
.db-img img { width:200px; height:300px; object-fit:contain; display:block; transition:transform .3s; }
.db-item:hover .db-img img { transform:scale(1.04); }
.db-img-ph { display:flex; align-items:center; justify-content:center; color:#fff; font-weight:800; font-size:26px; letter-spacing:2px; width:200px; height:300px; }
.db-tx { flex:none; min-height:0; padding:12px 14px; display:flex; flex-direction:column; align-items:center; overflow:hidden; }
/* 名称固定一行：长名称不换行，超出省略，hover/详情可见全名；文字区按一行自然高度，不留大块空白 */
.db-item .db-name { font-size:16px; color:var(--c-primary); font-weight:600; display:block; width:100%; max-width:100%; min-width:0; flex:none; line-height:1.5; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
a.db-name { text-decoration:none; transition:.2s; }
a.db-name:hover { color:var(--c-accent); text-decoration:underline; }
.db-item .db-desc { display:none; } /* 首页卡片只显示名称（兼容旧缓存 JS 的兜底） */

/* 广告位（期刊荣誉下方三个，图片可点击跳转） */
.ad-banners { background:var(--c-bg); }
.ad-row { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.ad-slot { display:block; position:relative; border-radius:var(--radius); overflow:hidden; background:#fff; border:1px solid var(--c-line); box-shadow:var(--shadow); height:210px; transition:.22s; text-decoration:none; }
.ad-slot img { width:100%; height:100%; object-fit:cover; display:block; }
.ad-slot:hover { transform:translateY(-3px); box-shadow:0 14px 30px rgba(26,58,108,.18); }
.ad-ph { width:100%; height:100%; display:flex; align-items:center; justify-content:center; color:var(--c-muted); font-size:13px; letter-spacing:2px; background:repeating-linear-gradient(45deg,#f7f9fc,#f7f9fc 10px,#f1f5fa 10px,#f1f5fa 20px); }
/* 广告位文字：有图时叠加在图底部（渐变遮罩保证可读），无图时整块文字卡片 */
.ad-cap { position:absolute; left:0; right:0; bottom:0; display:flex; flex-direction:column; gap:3px; padding:30px 14px 12px; color:#fff; background:linear-gradient(to top,rgba(8,20,38,.82) 0%,rgba(8,20,38,.55) 55%,rgba(8,20,38,0) 100%); }
.ad-cap b { font-size:14.5px; font-weight:600; line-height:1.45; text-shadow:0 1px 2px rgba(0,0,0,.35); }
.ad-cap span { font-size:12px; line-height:1.55; color:rgba(255,255,255,.9); }
.ad-text { width:100%; height:100%; display:flex; flex-direction:column; justify-content:center; gap:9px; padding:22px 20px; background:linear-gradient(135deg,#eef4fb,#e1ebf8); }
.ad-text b { font-size:16px; color:#1c2b45; line-height:1.5; }
.ad-text span { font-size:13px; color:#55687f; line-height:1.65; }
/* 内容型广告卡（无图 + 带说明，如「科技评价」板块）：深蓝渐变底 + 网点 + 金色题标，整卡可点 */
.ad-text--card { gap:12px; padding:24px 26px; color:#fff;
  background:radial-gradient(rgba(255,255,255,.09) 1px, transparent 1px) 0 0 / 22px 22px,
             linear-gradient(135deg, #0d2f66 0%, var(--c-primary) 58%, #2b6cb0 100%); }
.ad-text--card b { display:flex; align-items:center; font-size:21px; font-weight:800; letter-spacing:3px; color:#fff; line-height:1.3; }
.ad-text--card b::before { content:''; display:inline-block; width:5px; height:20px; flex:none; border-radius:3px;
  background:linear-gradient(180deg, #e7c66b, #c9a227); margin-right:12px; }
.ad-text--card span { font-size:12.5px; line-height:1.7; color:rgba(255,255,255,.9); }
.ad-cta { font-style:normal; font-size:12.5px; letter-spacing:1px; color:#fff; opacity:.95; margin-top:2px; }
.ad-cta::after { content:'\203A'; margin-left:6px; font-weight:700; }

/* 友情链接：200×80 Logo 卡片，一行约 5 个，横向翻页滑动（左右箭头，到头循环） */
.lk-slider { position:relative; }
.links-list { display:flex; gap:16px; overflow-x:auto; scroll-behavior:smooth; scroll-snap-type:x mandatory; scrollbar-width:none; -ms-overflow-style:none; }
.links-list::-webkit-scrollbar { display:none; }
.link-card { flex:0 0 224px; scroll-snap-align:start; display:flex; flex-direction:column; align-items:center; gap:8px; padding:12px 12px 10px; background:#fff; border:1px solid var(--c-line); border-radius:var(--radius); box-shadow:var(--shadow); text-decoration:none; transition:.2s; }
.link-card:hover { transform:translateY(-3px); border-color:#c6d6ea; box-shadow:0 12px 26px rgba(26,58,108,.16); }
.link-logo { width:200px; height:80px; display:flex; align-items:center; justify-content:center; overflow:hidden; }
.link-logo img { max-width:200px; max-height:80px; width:auto; height:auto; object-fit:contain; display:block; }
.link-abbr { width:100%; height:80px; border-radius:12px; color:#fff; font-weight:800; font-size:18px; letter-spacing:1px; display:flex; align-items:center; justify-content:center; box-shadow:0 5px 14px rgba(0,0,0,.12); }
.link-name { font-size:13px; color:#33425a; text-align:center; line-height:1.45; max-width:200px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.lk-arrow { position:absolute; top:50%; transform:translateY(-50%); width:34px; height:34px; border-radius:50%; border:1px solid var(--c-line); background:#fff; color:var(--c-primary); font-size:20px; line-height:1; cursor:pointer; box-shadow:var(--shadow); z-index:2; display:none; align-items:center; justify-content:center; transition:.2s; }
.lk-arrow.prev { left:-15px; }
.lk-arrow.next { right:-15px; }
.lk-arrow:hover { background:var(--c-primary); color:#fff; }
.lk-arrow.show { display:flex; }

/* 投稿通道图片横幅（轮播正下方，三按钮） */
.submit-strip { position:relative; background:linear-gradient(120deg, var(--c-strip-from) 0%, var(--c-strip-mid) 55%, var(--c-strip-to) 100%); color:#fff; overflow:hidden; border-radius:0 0 10px 10px; box-shadow:0 12px 28px rgba(26,58,108,.14); }
.submit-strip::before { content:""; position:absolute; inset:0; background-image:radial-gradient(rgba(255,255,255,.10) 1px, transparent 1px); background-size:22px 22px; opacity:.45; pointer-events:none; }
.submit-inner { position:relative; z-index:1; display:flex; align-items:center; justify-content:space-between; gap:28px; padding:0 28px; flex-wrap:wrap; }
.submit-head { max-width:320px; }
.submit-tag { display:inline-block; background:rgba(255,255,255,.16); border:1px solid rgba(255,255,255,.45); font-size:13px; padding:3px 14px; border-radius:20px; margin-bottom:12px; letter-spacing:2px; }
.submit-head p { margin:0; font-size:15px; line-height:1.7; opacity:.92; }
.submit-btns { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; flex:1; min-width:340px; }
/* 三个入口：深蓝半透明描边卡片 + 白色线性图标 + 粗体文字 */
.btn-submit { display:flex; align-items:center; justify-content:center; gap:14px; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.28); border-radius:10px; padding:20px 22px; color:#fff; text-decoration:none; transition:.2s; }
.btn-submit:hover { background:#fff; color:var(--c-primary); transform:translateY(-2px); box-shadow:0 10px 24px rgba(0,0,0,.25); }
.btn-submit .bs-ic { width:34px; height:34px; flex:none; color:#fff; transition:.2s; }
.btn-submit:hover .bs-ic { color:var(--c-primary); }
.btn-submit .bs-tx { font-size:23px; font-weight:700; letter-spacing:2px; }

@media (max-width:860px){
  .hot-grid{ grid-template-columns:1fr; }
  .hero-slides{ height:250px; }
  /* 窄屏：证书类 banner 按容器高度完整缩放并靠右，避免证书被横向裁掉；纯图 banner1 不受影响 */
  .slide:not(.slide-plain){ background-size:auto 100%; background-position:right center; background-color:#13375f; }
  /* 窄屏：banner1 为 1900x300 超宽纯图，cover 按容器高度铺满时手机只能看到原图中间约
     三分之一宽度、两侧文字被裁掉。文字实测位于原图 x 465..1236（宽 771px）。改为按
     min(37vw, 250px) 高度等比缩放（缩放后原图可见窗口约 811px ≥ 771px），水平锚定 41%
     （文字中心），上下空隙用主题深蓝补底，「坚持学术第一…」两行文字在手机上完整显示 */
  .slide-plain{ background-size:auto min(37vw, 250px); background-position:41% center; background-repeat:no-repeat; background-color:var(--c-primary-dark); }
  .slide-title{ font-size:22px; }
  .slide-sub{ font-size:14px; }
  .slide-arrow{ display:none; }
  .submit-inner{ flex-direction:column; align-items:stretch; text-align:center; padding:16px 20px; }
  .submit-btns{ grid-template-columns:1fr; min-width:0; }
  /* 公告条：窄屏换行，搜索块独占一行 */
  .notice-combo .notice-block{ height:auto; }
  .notice-inner{ height:auto; flex-wrap:wrap; row-gap:10px; }
  .notice-search{ width:100%; margin-left:0; justify-content:flex-start; }
  .ns-input{ flex:1; width:auto; }
  /* 广告位：窄屏单列 */
  .ad-row{ grid-template-columns:1fr; gap:14px; }
  /* 期刊荣誉：窄屏保持跑马灯，卡片略窄 */
  .db-item{ flex:0 0 236px; width:236px; }
  /* 友情链接：窄屏保持翻页，卡片略窄 */
  .link-card{ flex:0 0 190px; width:190px; }
  .link-logo{ width:166px; height:72px; }
  .link-logo img{ max-width:166px; max-height:72px; }
}

@media (max-width:560px){
  /* 期刊荣誉：手机一行 2 个 */
  .db-item{ flex:0 0 172px; width:172px; height:auto; }
  .db-img{ height:250px; }
  .db-img img{ width:170px; height:250px; }
  .db-img-ph{ width:170px; height:250px; font-size:22px; }
  /* 手机卡片变窄，名称字号同步收一点，常见荣誉名称仍能一行完整显示 */
  .db-item .db-name{ font-size:14px; }
}


/* ===== 杂志社公告 横排五列新闻卡片 ===== */
.news-tabs-sec { background:var(--c-bg); padding:0; }
.nt-grid { display:grid; grid-template-columns:repeat(5,1fr); gap:18px; align-items:stretch; }
.nt-card { background:#fff; border:1px solid var(--c-line); border-radius:var(--radius); overflow:hidden; text-decoration:none; display:flex; flex-direction:column; box-shadow:var(--shadow); transition:.2s; }
.nt-card:hover { transform:translateY(-4px); box-shadow:0 14px 30px rgba(26,58,108,.15); }
.nt-card img, .nt-ph { width:100%; flex:none; aspect-ratio:16/10; display:block; object-fit:cover; }
.nt-ph { display:flex; align-items:center; justify-content:center; }
.nt-ph span { color:rgba(255,255,255,.92); font-size:14px; font-weight:600; letter-spacing:2px; padding:5px 12px; border:1px solid rgba(255,255,255,.45); border-radius:4px; }
/* 无配图占位色块：三套渐变轮换，全部取主题变量，随「主题配色」一起变 */
.nt-ph-t0 { background:linear-gradient(135deg, var(--c-primary), var(--c-accent)); }
.nt-ph-t1 { background:linear-gradient(135deg, var(--c-primary-dark), var(--c-primary-2)); }
.nt-ph-t2 { background:linear-gradient(135deg, var(--c-accent), var(--c-primary-dark)); }
.nt-body { flex:1; display:flex; flex-direction:column; padding:12px 14px 14px; }
.nt-title { font-size:14px; font-weight:600; color:#2a3550; line-height:1.55; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; min-height:44px; }
.nt-meta { display:flex; align-items:center; gap:6px; flex-wrap:wrap; margin-top:auto; padding-top:9px; border-top:1px solid var(--c-line); }
/* 栏目与日期：明确可辨，不再用一整行 12px 浅灰文字 */
.nt-cat { color:var(--c-primary); background:var(--c-soft); font-size:12px; font-weight:600; padding:2px 9px; border-radius:3px; white-space:nowrap; }
.nt-date { color:#54657d; font-size:13px; font-weight:500; margin-left:auto; white-space:nowrap; font-variant-numeric:tabular-nums; }
.nt-pin { color:#fff; background:#c0392b; font-size:11px; font-weight:700; padding:2px 7px; border-radius:3px; white-space:nowrap; }
/* 公告卡片下方「查看更多」 */
.nt-more { text-align:center; margin-top:26px; }
.nt-more a { display:inline-block; padding:9px 38px; border:1px solid #c7d2e2; border-radius:22px; background:#fff; color:var(--c-primary); font-size:14px; text-decoration:none; letter-spacing:2px; transition:.2s; }
.nt-more a:hover { background:var(--c-primary); border-color:var(--c-primary); color:#fff; }
@media (max-width:1180px){ .nt-grid { grid-template-columns:repeat(4,1fr); } }
@media (max-width:900px){ .nt-grid { grid-template-columns:repeat(3,1fr); } }
@media (max-width:680px){ .nt-grid { grid-template-columns:repeat(2,1fr); } }

/* ===== 内容区宽度板块（轮播 / 投稿通道，不通栏） ===== */
.frame-sec { background:transparent; padding:0; }

/* 荣誉卡片整体为链接时去掉下划线，保持原卡片观感 */
a.db-item { text-decoration:none; display:flex; }