/* ============================================================
   Education.taipei — Design System
   Visual A: "Celadon Chronicle" (青瓷纪事)
   celadon green × rice-paper white × seal red
   ============================================================ */

:root {
  --bg:        #F7F5EF;   /* rice paper */
  --bg-soft:   #EFEDE3;   /* deeper paper */
  --card:      #FFFFFF;
  --ink:       #26292B;   /* ink text */
  --ink-soft:  #555A58;
  --ink-faint: #8B8E89;
  --celadon:      #2E6E65; /* celadon green — primary */
  --celadon-dark: #235A52;
  --celadon-mist: #EAF1EE; /* pale celadon wash */
  --seal:      #9E3B33;   /* seal red — accent */
  --line:      #C9D2CD;   /* celadon-grey hairline */
  --line-soft: #DDD9CC;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --cjk: "LXGW WenKai", "Noto Serif TC", "Songti TC", "PingFang TC", PMingLiU, serif;
  --max-w: 980px;
}

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

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.65;
  font-feature-settings: "liga" 1;
}

/* ---------- masthead ---------- */

.masthead {
  border-top: 1px solid var(--celadon);
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.masthead-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.brand .seal {
  width: 26px; height: 26px;
  background: var(--seal);
  color: #F7F5EF;
  font-family: var(--cjk);
  font-size: 15px;
  line-height: 26px;
  text-align: center;
  flex: none;
}
.brand .brand-name {
  font-size: 18px;
  letter-spacing: 2px;
  font-weight: 500;
}
.brand .brand-name .tld { color: var(--celadon); }

nav.main-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
nav.main-nav a {
  font-size: 12px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 3px 0;
  border-bottom: 1px solid transparent;
}
nav.main-nav a:hover,
nav.main-nav a.active { color: var(--celadon); border-bottom-color: var(--celadon); }

/* ---------- page scaffolding ---------- */

.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

.page-head { padding: 56px 0 36px; border-bottom: 1px solid var(--line); }
.page-head .kicker {
  font-size: 12px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--celadon); margin-bottom: 10px;
}
.page-head h1 {
  font-size: clamp(30px, 5.2vw, 44px);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: 0.4px;
}
.page-head .lede {
  margin-top: 14px; max-width: 620px;
  font-size: 18px; color: var(--ink-soft);
}
.page-head .zh {
  font-family: var(--cjk);
  color: var(--ink-faint);
  font-size: 15px;
  margin-top: 8px;
  letter-spacing: 3px;
}

section.block { padding: 40px 0 8px; }
.block-title {
  display: flex; align-items: baseline; gap: 12px;
  border-bottom: double 3px var(--line);
  padding-bottom: 8px; margin-bottom: 20px;
}
.block-title .en {
  font-size: 13px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--celadon); font-weight: 500;
}
.block-title .zh {
  font-family: var(--cjk); font-size: 14px; color: var(--ink-faint);
  letter-spacing: 3px;
}

/* ---------- cards ---------- */

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 18px 20px;
  text-decoration: none;
  color: var(--ink);
  display: flex; flex-direction: column; gap: 6px;
  transition: border-color .18s ease;
}
.card:hover { border-color: var(--celadon); }
.card .abbr {
  font-size: 20px; font-weight: 500; color: var(--celadon);
  letter-spacing: 1px;
}
.card .zh-name {
  font-family: var(--cjk);
  font-size: 15px; color: var(--ink); letter-spacing: 2px;
}
.card .meta {
  font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.6px;
  font-variant: small-caps;
}
.card p { font-size: 14.5px; color: var(--ink-soft); line-height: 1.55; }

.card.list-card { gap: 4px; }
.card.list-card .no {
  font-size: 12px; color: var(--seal); letter-spacing: 2px;
  font-variant: small-caps;
}

/* ---------- today module (daily rotation) ---------- */

.today {
  background: var(--celadon-mist);
  border-left: 2px solid var(--seal);
  padding: 18px 22px;
  margin: 32px 0 0;
}
.today .today-kicker {
  font-size: 11.5px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--seal); margin-bottom: 6px;
}
.today .today-body { font-size: 16px; }
.today .today-body .zh { font-family: var(--cjk); color: var(--ink-soft); }
.today .today-body a { color: var(--celadon-dark); text-decoration-color: var(--line); }

/* ---------- prose ---------- */

.prose { max-width: 660px; }
.prose p { margin-bottom: 16px; }
.prose h2 {
  font-size: 22px; font-weight: 500; margin: 30px 0 12px;
  border-bottom: 1px solid var(--line); padding-bottom: 6px;
}
.prose h2 .zh-h { font-family: var(--cjk); font-size: 15px; color: var(--ink-faint); margin-left: 10px; letter-spacing: 2px; }
.prose a { color: var(--celadon-dark); }
.prose .note {
  font-size: 14px; color: var(--ink-faint); border-left: 2px solid var(--line);
  padding-left: 14px;
}
.prose .zh-block {
  font-family: var(--cjk); background: var(--bg-soft);
  padding: 16px 20px; font-size: 15.5px; line-height: 1.9;
  letter-spacing: 1px; color: var(--ink);
}

/* ---------- tables ---------- */

table.plain { border-collapse: collapse; width: 100%; font-size: 15px; }
table.plain th, table.plain td {
  text-align: left; padding: 10px 12px;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
table.plain th {
  font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--celadon); font-weight: 500;
}
table.plain td .zh { font-family: var(--cjk); }

/* ---------- footer ---------- */

footer.site-foot {
  margin-top: 72px;
  border-top: 1px solid var(--celadon);
  border-bottom: 1px solid var(--line);
}
.foot-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 22px 24px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  align-items: center;
}
.foot-inner .left { font-size: 13px; color: var(--ink-soft); }
.foot-inner .left .zh { font-family: var(--cjk); color: var(--ink-faint); }
.foot-inner .right a { color: var(--celadon); font-size: 13px; text-decoration: none; letter-spacing: 1px; }
.foot-inner .right a:hover { color: var(--celadon-dark); }

/* ---------- 404 ---------- */
.err-code {
  font-size: clamp(64px, 12vw, 120px); line-height: 1; color: var(--celadon);
  font-weight: 400; letter-spacing: 6px;
}
.err-seal {
  width: 34px; height: 34px; background: var(--seal); color: #F7F5EF;
  font-family: var(--cjk); font-size: 19px; line-height: 34px; text-align: center;
  margin: 26px auto 0;
}

/* ---------- small screens ---------- */
@media (max-width: 640px) {
  body { font-size: 16px; }
  .masthead-inner { padding: 12px 18px; }
  .wrap { padding: 0 18px; }
  nav.main-nav { gap: 12px; }
  .page-head { padding: 40px 0 26px; }
}

/* ---------- district page card list (single column) ---------- */
.grid.area-grid { grid-template-columns: 1fr; }
.grid.area-grid .list-card { display: flex; align-items: baseline; gap: 14px; }
.grid.area-grid .list-card .abbr { min-width: 86px; }
.grid.area-grid .list-card .zh-name { min-width: 76px; }
.grid.area-grid .list-card p { flex: 1; margin: 0; }
@media (max-width: 640px) {
  .grid.area-grid .list-card { flex-direction: column; gap: 4px; }
  .grid.area-grid .list-card .abbr, .grid.area-grid .list-card .zh-name { min-width: 0; }
}