/* 大同大学（筹）官网样式 — 复古学院风（民国书卷气 × 现代排版）
 * 配色：藏蓝 #1B3A6B ｜ 米金 #C9A227 ｜ 宣纸 #F7F4EC ｜ 印泥红 #9E2B25 */

:root {
  --blue: #1B3A6B;
  --blue-deep: #14335F;
  --blue-ink: #16325E;
  --gold: #C9A227;
  --gold-dark: #8A6D1D;
  --paper: #F7F4EC;
  --line: #E0DAC9;
  --ink: #26282B;
  --muted: #838690;
  --seal: #9E2B25;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun",
               "EB Garamond", Georgia, "Times New Roman", serif;
  background: #EFEADF;
  color: var(--ink);
  font-size: 15.5px;
  line-height: 1.7;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { width: min(1080px, 94vw); margin: 0 auto; }

/* ---------- 顶栏 ---------- */
.topbar {
  background: var(--blue-deep);
  color: #C9D3E6;
  font-size: 13px;
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; }
.langbar a { color: #E8E4D8; margin-left: 4px; }
.langbar a:not(:first-child)::before { content: "｜"; color: #5A6C93; margin-right: 4px; }

/* ---------- 题头 ---------- */
.masthead { background: var(--paper); border-bottom: 1px solid var(--line); }
.masthead .wrap { display: flex; align-items: center; gap: 20px; padding: 20px 0; }
.crest img { height: 88px; width: auto; display: block; }
.mh-text h1 { font-size: 34px; letter-spacing: 3px; color: var(--blue); font-weight: 700; }
.mh-text h1 a { color: inherit; }
.mh-text h1 a:hover { text-decoration: none; }
.mh-text .suffix { font-size: 18px; font-weight: 400; color: #555; margin-left: 8px; letter-spacing: 1px; }
.mh-text .sub { font-size: 13px; color: #7A7466; letter-spacing: 1.5px; margin-top: 4px; }
.seal {
  margin-left: auto;
  width: 68px; height: 68px;
  border: 3px solid var(--seal);
  color: var(--seal);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  place-items: center;
  font-size: 21px; font-weight: 700;
  padding: 5px;
  cursor: help;
  user-select: none;
}

/* ---------- 主导航 ---------- */
.mainnav { background: var(--blue); box-shadow: 0 2px 5px rgba(20, 40, 75, .25); }
.mainnav .wrap { display: flex; flex-wrap: wrap; }
.mainnav a {
  color: #E8E4D8; padding: 13px 26px; font-size: 16.5px; letter-spacing: 3px;
}
.mainnav a:hover, .mainnav a.cur {
  color: #FFF; text-decoration: none;
  box-shadow: inset 0 -3px 0 var(--gold);
}

/* ---------- 主区 ---------- */
main.wrap {
  background: #FFF;
  padding: 0 28px 30px;
  box-shadow: 0 0 8px rgba(60, 50, 30, .08);
  min-height: 55vh;
}

/* 首页头条 */
.hero {
  margin: 24px 0 26px;
  padding: 26px 30px;
  background: linear-gradient(180deg, #FBF9F2, #F6F2E6);
  border: 1px solid var(--line);
  border-left: 6px solid var(--gold);
}
.hero .kicker { font-size: 13px; color: var(--gold-dark); letter-spacing: 2px; margin-bottom: 8px; }
.hero h2 { font-size: 26px; line-height: 1.45; margin-bottom: 10px; }
.hero h2 a { color: var(--blue); }
.hero .excerpt { color: #4A4A4A; max-width: 72ch; }
.hero .more, .sec .more { font-size: 13px; color: #6B6455; font-weight: 400; letter-spacing: 1px; }
.hero .more { display: inline-block; margin-top: 12px; }

/* 三栏 */
.cols { display: grid; grid-template-columns: 5fr 4fr 3fr; gap: 30px; padding-bottom: 16px; }

.sec {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 19px; color: var(--blue);
  border-left: 5px solid var(--gold);
  padding-left: 10px;
  margin: 10px 0 14px;
  letter-spacing: 2px;
}
.sec .more:hover { color: var(--blue); }

/* 动态列表 */
.list li, .nlist li { display: flex; align-items: baseline; gap: 10px; padding: 10px 0; border-bottom: 1px dashed #DDD8CB; }
.list li a, .nlist li a { flex: 1; color: var(--ink); }
.list li a:hover, .nlist li a:hover { color: var(--blue); }
.date { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.cat { font-size: 12px; color: var(--gold-dark); border: 1px solid #D8C98A; padding: 0 6px; white-space: nowrap; }
.biglist li { padding: 13px 0; font-size: 16.5px; }

/* 通知公告 */
.ntag { color: var(--seal); font-weight: 600; font-size: 13px; white-space: nowrap; }
.ntag::before { content: "【"; }
.ntag::after { content: "】"; }
.nlist .date { margin-left: auto; }
.nlist li a { flex: 1; }

/* 快速通道 */
.qlist li a { display: block; padding: 8px 2px; border-bottom: 1px dotted #D5CFC0; color: var(--ink); }
.qlist li a::before { content: "▸ "; color: var(--gold); }
.qlist li a:hover { color: var(--blue); }

/* 校史时间线 */
.vtl { border-left: 2px solid var(--gold); padding-left: 16px; margin: 4px 0 10px; }
.vtl .item { margin-bottom: 14px; }
.vtl .yr { font-weight: 700; color: var(--blue); font-size: 15px; }
.vtl p { font-size: 13.5px; color: #555; }

/* ---------- 内页 ---------- */
.pagehead h1 {
  font-size: 26px; color: var(--blue); letter-spacing: 2px;
  margin: 30px 0 18px; padding-bottom: 12px;
  border-bottom: 3px double var(--blue);
}
.prose p { line-height: 1.95; margin-bottom: 14px; text-align: justify; }
.prose h2 { font-size: 20px; color: var(--blue); margin: 30px 0 14px; letter-spacing: 1.5px; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 18px 0 24px; }
.card { border: 1px solid var(--line); background: #FBF9F3; padding: 16px 18px; }
.card h3 { font-size: 14.5px; color: var(--gold-dark); letter-spacing: 2px; border-bottom: 1px solid #E5DDC8; padding-bottom: 8px; }
.card .big { font-size: 18px; font-weight: 600; color: #232323; margin: 10px 0 6px; }
.card .muted, .muted { color: #8B8578; font-size: 13px; }

/* 文章页 */
.article { max-width: 820px; margin: 0 auto; }
.article > h1 { font-size: 27px; color: var(--blue); text-align: center; margin: 36px 0 12px; line-height: 1.5; }
.article .meta { text-align: center; font-size: 13px; color: var(--muted); border-bottom: 1px solid #EAE5D8; padding-bottom: 16px; margin-bottom: 22px; }
.article .back { margin: 26px 0 40px; }

.sign { text-align: right; color: #444; line-height: 2; }
.statement ol { margin: 14px 0 0 1.5em; }
.statement li { margin-bottom: 12px; line-height: 1.9; }

/* 404 */
.e404 { text-align: center; padding: 90px 0 60px; }
.e404 h1 { font-size: 72px; color: var(--blue); letter-spacing: 12px; }
.e404 p { margin: 10px 0; }

/* ---------- 页脚 ---------- */
footer { background: var(--blue-deep); color: #C9D3E6; margin-top: 42px; padding: 26px 0 32px; }
footer p { margin: 7px 0; font-size: 13.5px; }
footer .fnav a { color: #FFF; margin: 0 4px; }
footer .muted { color: #8FA0C0; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .cols { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .mh-text h1 { font-size: 25px; }
  .seal { width: 56px; height: 56px; font-size: 17px; }
  .crest img { height: 64px; }
  .mainnav a { padding: 11px 15px; font-size: 15px; letter-spacing: 2px; }
}