@font-face {
  font-family: "HuWenMingChao";
  src: url("../fonts/HuWenMingChaoTi.woff2") format("woff2"),
       url("../fonts/HuWenMingChaoTi.woff") format("woff");
  font-display: swap;
}

:root {
  --paper: #f6f1e7;
  --paper-2: #fbf8f2;
  --card: #fffdf9;
  --ink: #2a2521;
  --ink-2: #574d44;
  --ink-3: #8b7f72;
  --line: #e2d8c8;
  --line-2: #efe7d9;
  --zhu: #9c3833;
  --zhu-soft: #c26a5e;
  --qing: #3c6b78;
  --gold: #a9884a;
  --ok: #4a7a52;
  --shadow: 0 1px 2px rgba(60, 45, 30, .05), 0 8px 24px rgba(60, 45, 30, .06);
  --radius: 14px;
  --serif: "HuWenMingChao", "Songti SC", "SimSun", "Source Han Serif SC", "Noto Serif CJK SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --read-size: 19px;
  --read-lh: 2.05;
  --read-width: 34em;
}

html[data-theme="dark"] {
  --paper: #15141a;
  --paper-2: #1b1a21;
  --card: #1f1e26;
  --ink: #e7e0d4;
  --ink-2: #b9b0a2;
  --ink-3: #8a8175;
  --line: #322f3a;
  --line-2: #29272f;
  --zhu: #d9736a;
  --zhu-soft: #b3564d;
  --qing: #6fa5b3;
  --gold: #c8a765;
  --ok: #7fae86;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px rgba(0, 0, 0, .3);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

a { color: var(--zhu); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.4; margin: 0; }

/* ---------- 頂欄 ---------- */
.top {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
}
.top-in {
  max-width: 1180px; margin: 0 auto; padding: 0 18px;
  display: flex; align-items: center; gap: 14px; height: 56px;
}
.brand {
  font-family: var(--serif); font-size: 19px; letter-spacing: .06em;
  color: var(--ink); white-space: nowrap; display: flex; align-items: baseline; gap: 8px;
}
.brand b { font-weight: 600; }
.brand span { font-size: 11px; color: var(--ink-3); letter-spacing: .12em; font-family: var(--sans); }
.tabs { display: flex; gap: 2px; margin-left: 6px; overflow-x: auto; scrollbar-width: none; flex: 1; }
.tabs::-webkit-scrollbar { display: none; }
.tabs a {
  padding: 6px 11px; border-radius: 9px; color: var(--ink-2);
  font-size: 14px; white-space: nowrap; letter-spacing: .04em;
}
.tabs a:hover { background: var(--line-2); text-decoration: none; }
.tabs a.on { background: var(--zhu); color: #fff; }
.top-tools { display: flex; align-items: center; gap: 6px; }
.icon-btn {
  width: 34px; height: 34px; display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 9px; background: var(--card);
  font-size: 15px; line-height: 1;
}
.icon-btn:hover { border-color: var(--zhu-soft); color: var(--zhu); }

/* ---------- 版心 ---------- */
.wrap { max-width: 1180px; margin: 0 auto; padding: 26px 18px 90px; }
.narrow { max-width: 780px; }
.page-head { margin-bottom: 20px; }
.page-head h1 { font-size: 27px; letter-spacing: .04em; }
.page-head p { margin: 8px 0 0; color: var(--ink-3); font-size: 14px; max-width: 62ch; }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.pad { padding: 18px 20px; }

.muted { color: var(--ink-3); }
.small { font-size: 13px; }
.tiny { font-size: 12px; }
.zhu { color: var(--zhu); }
.center { text-align: center; }

.chip {
  display: inline-block; padding: 2px 9px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--paper-2);
  font-size: 12px; color: var(--ink-2); letter-spacing: .03em;
}
.chip.on { background: var(--zhu); border-color: var(--zhu); color: #fff; }
.chip.qing { border-color: color-mix(in srgb, var(--qing) 40%, var(--line)); color: var(--qing); }
.chip.gold { border-color: color-mix(in srgb, var(--gold) 45%, var(--line)); color: var(--gold); }
button.chip { cursor: pointer; }
button.chip:hover { border-color: var(--zhu-soft); }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 15px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink); font-size: 14px;
}
.btn:hover { border-color: var(--zhu-soft); color: var(--zhu); }
.btn.primary { background: var(--zhu); border-color: var(--zhu); color: #fff; }
.btn.primary:hover { background: var(--zhu-soft); color: #fff; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.grid { display: grid; gap: 14px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 首頁 ---------- */
.hero { display: grid; grid-template-columns: 1.35fr 1fr; gap: 16px; margin-bottom: 18px; }
.today h2 { font-size: 20px; margin-bottom: 2px; }
.today .d { color: var(--ink-3); font-size: 13px; letter-spacing: .05em; }
.tasklist { list-style: none; margin: 14px 0 0; padding: 0; }
.tasklist li {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 9px 0; border-top: 1px dashed var(--line);
  font-size: 14px; line-height: 1.7;
}
.tasklist li:first-child { border-top: 0; }
.tasklist .k {
  flex: none; width: 22px; height: 22px; border-radius: 7px; margin-top: 2px;
  border: 1px solid var(--line); display: grid; place-items: center;
  font-size: 12px; color: var(--ink-3); background: var(--paper-2);
}
.tasklist li.done .k { background: var(--ok); border-color: var(--ok); color: #fff; }
.tasklist li.done .t { color: var(--ink-3); text-decoration: line-through; }

.ring { display: flex; align-items: center; gap: 16px; }
.ring svg { flex: none; }
.ring .n { font-family: var(--serif); font-size: 30px; line-height: 1.1; }

.poem-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow); }
.poem-card .lines {
  font-family: var(--serif); font-size: 17px; line-height: 2.1;
  letter-spacing: .05em; white-space: pre-line; margin: 10px 0;
}

.entry {
  display: block; padding: 16px 18px; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--card); box-shadow: var(--shadow);
  color: var(--ink);
}
.entry:hover { border-color: var(--zhu-soft); text-decoration: none; transform: translateY(-1px); }
.entry h3 { font-size: 16px; }
.entry p { margin: 6px 0 0; font-size: 13px; color: var(--ink-3); line-height: 1.65; }
.entry .num { font-family: var(--serif); font-size: 22px; color: var(--zhu); }

/* ---------- 目錄 / 閱讀 ---------- */
.reader-layout { display: grid; grid-template-columns: 268px minmax(0, 1fr); gap: 22px; align-items: start; }
.toc { position: sticky; top: 74px; max-height: calc(100vh - 96px); display: flex; flex-direction: column; }
.toc-search {
  width: 100%; padding: 8px 11px; border-radius: 9px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink); font-size: 13px;
}
.toc-list { overflow-y: auto; margin-top: 10px; padding-right: 4px; flex: 1; }
.toc-toggle { display: none; }
.toc-part {
  position: sticky; top: 0; background: var(--paper);
  font-size: 11px; letter-spacing: .16em; color: var(--ink-3);
  padding: 9px 2px 5px; border-bottom: 1px solid var(--line-2); z-index: 1;
}
.toc-item {
  display: flex; gap: 8px; align-items: baseline; width: 100%; text-align: left;
  padding: 6px 8px; border: 0; background: none; border-radius: 8px;
  font-size: 13px; line-height: 1.6; color: var(--ink-2);
}
.toc-item:hover { background: var(--line-2); }
.toc-item.on { background: color-mix(in srgb, var(--zhu) 12%, transparent); color: var(--zhu); }
.toc-item .n { flex: none; width: 2.2em; text-align: right; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.toc-item.read .n::after { content: "·"; color: var(--ok); }
.toc-item.read { color: var(--ink-3); }
.toc-item .dot { flex: none; width: 5px; height: 5px; border-radius: 50%; background: transparent; margin-top: 8px; }
.toc-item.has-exam .dot { background: var(--zhu); }

.reader { max-width: none; }
.reader-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  padding-bottom: 12px; border-bottom: 1px solid var(--line); margin-bottom: 18px;
}
.reader-bar .spacer { flex: 1; }
.chapter-title { font-family: var(--serif); font-size: 25px; letter-spacing: .05em; margin: 0 0 4px; }
.chapter-sub { color: var(--ink-3); font-size: 13px; margin-bottom: 20px; }
.chapter-body {
  font-family: var(--serif);
  font-size: var(--read-size); line-height: var(--read-lh);
  max-width: var(--read-width); letter-spacing: .02em;
}
.chapter-body p { margin: 0 0 1.05em; text-indent: 2em; }
.chapter-body p.mark { background: color-mix(in srgb, var(--gold) 22%, transparent); border-radius: 3px; }
.side-box { margin: 0 0 14px; }
.side-box h4 { font-size: 13px; letter-spacing: .1em; color: var(--ink-3); font-family: var(--sans); font-weight: 600; margin-bottom: 8px; }
.side-box ul { list-style: none; margin: 0; padding: 0; font-size: 13px; line-height: 1.85; }
.reader-cols { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 28px; align-items: start; }
.reader-side { position: sticky; top: 74px; }

.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 34px; padding-top: 18px; border-top: 1px solid var(--line); }

/* ---------- 真題 ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.exam-item { margin-bottom: 14px; overflow: hidden; }
.exam-head {
  display: flex; gap: 12px; align-items: baseline; width: 100%; text-align: left;
  padding: 15px 18px; background: none; border: 0;
}
.exam-head:hover { background: var(--paper-2); }
.exam-year { font-family: var(--serif); font-size: 25px; color: var(--zhu); flex: none; line-height: 1; }
.exam-head .meta { flex: 1; min-width: 0; }
.exam-head .meta h3 { font-size: 16px; font-family: var(--sans); font-weight: 600; }
.exam-head .meta .sub { font-size: 12.5px; color: var(--ink-3); margin-top: 3px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.exam-body { padding: 0 18px 18px; border-top: 1px solid var(--line-2); }
.qbox {
  font-family: var(--serif); font-size: 16px; line-height: 1.95;
  white-space: pre-wrap; background: var(--paper-2);
  border-left: 3px solid var(--zhu); border-radius: 0 8px 8px 0;
  padding: 14px 16px; margin: 14px 0;
}
.material {
  font-family: var(--serif); font-size: 15.5px; line-height: 2;
  background: var(--paper-2); border: 1px solid var(--line-2);
  border-radius: 8px; padding: 14px 16px; margin: 14px 0; white-space: pre-wrap;
}
.material .src { display: block; font-family: var(--sans); font-size: 12px; color: var(--ink-3); margin-bottom: 8px; letter-spacing: .06em; }
.opts { list-style: none; margin: 10px 0; padding: 0; }
.opts li { padding: 5px 0 5px 30px; position: relative; font-size: 14.5px; line-height: 1.8; }
.opts li b { position: absolute; left: 0; color: var(--zhu); font-family: var(--serif); }
.ans { border-top: 1px dashed var(--line); margin-top: 14px; padding-top: 14px; }
.ans h4 { font-size: 13px; letter-spacing: .1em; color: var(--zhu); font-family: var(--sans); margin-bottom: 8px; }
.ans .body { white-space: pre-wrap; font-size: 14.5px; line-height: 1.95; }
.selfbox { width: 100%; min-height: 92px; resize: vertical; padding: 11px 13px; border-radius: 10px; border: 1px solid var(--line); background: var(--paper-2); color: var(--ink); font: inherit; line-height: 1.8; }

/* ---------- 人物 ---------- */
.people-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.p-card { padding: 14px 16px; text-align: left; display: block; width: 100%; border: 1px solid var(--line); background: var(--card); border-radius: var(--radius); color: var(--ink); }
.p-card:hover { border-color: var(--zhu-soft); text-decoration: none; }
.p-card h3 { font-size: 17px; letter-spacing: .06em; }
.p-card .tl { font-size: 12.5px; color: var(--ink-3); margin-top: 5px; line-height: 1.6; }
.spark { display: flex; align-items: flex-end; gap: 1px; height: 26px; margin-top: 10px; }
.spark i { flex: 1; background: color-mix(in srgb, var(--qing) 55%, transparent); border-radius: 1px; min-height: 1px; }
.person-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px; }
.person-head h1 { font-size: 30px; letter-spacing: .08em; }
.scene { display: flex; gap: 12px; padding: 10px 0; border-top: 1px dashed var(--line); font-size: 14px; line-height: 1.8; }
.scene:first-of-type { border-top: 0; }
.scene .ch { flex: none; font-family: var(--serif); color: var(--zhu); width: 3.6em; }
.bullet { list-style: none; padding: 0; margin: 0; }
.bullet li { position: relative; padding-left: 16px; margin-bottom: 7px; font-size: 14px; line-height: 1.8; }
.bullet li::before { content: ""; position: absolute; left: 3px; top: 11px; width: 5px; height: 5px; border-radius: 50%; background: var(--zhu-soft); }

/* ---------- 詩詞 ---------- */
.poem-item { padding: 16px 18px; margin-bottom: 12px; }
.poem-item h3 { font-size: 17px; letter-spacing: .05em; }
.poem-item .lines {
  font-family: var(--serif); font-size: 16.5px; line-height: 2.05;
  letter-spacing: .05em; margin: 10px 0; white-space: pre-line;
}
.poem-item .note { font-size: 13.5px; line-height: 1.85; color: var(--ink-2); white-space: pre-wrap; }
details.anno { margin-top: 10px; }
details.anno summary { cursor: pointer; font-size: 13px; color: var(--qing); }
details.anno .note { margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--line); }

/* ---------- 計畫 ---------- */
.plan-day { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 14px; padding: 13px 0; border-top: 1px solid var(--line-2); }
.plan-day:first-of-type { border-top: 0; }
.plan-day .dn { font-family: var(--serif); font-size: 20px; color: var(--ink-3); text-align: right; }
.plan-day.today { background: color-mix(in srgb, var(--gold) 11%, transparent); border-radius: 10px; padding: 13px 12px; }
.plan-day.today .dn { color: var(--zhu); }
.plan-day.done .dn { color: var(--ok); }
.plan-day h4 { font-size: 14.5px; font-family: var(--sans); font-weight: 600; }
.plan-day ul { list-style: none; margin: 7px 0 0; padding: 0; font-size: 13.5px; line-height: 1.8; color: var(--ink-2); }
.plan-day li { padding-left: 14px; position: relative; }
.plan-day li::before { content: "·"; position: absolute; left: 3px; color: var(--zhu-soft); }
.plan-note { margin-top: 8px; font-size: 13px; color: var(--gold); line-height: 1.7; }

/* ---------- 讀法 ---------- */
.method-sec { margin-bottom: 26px; }
.method-sec > h2 { font-size: 20px; margin-bottom: 12px; letter-spacing: .04em; }
.method-block { padding: 15px 18px; margin-bottom: 10px; }
.method-block h4 { font-size: 15px; font-family: var(--sans); font-weight: 600; margin-bottom: 6px; }
.method-block p { margin: 0; font-size: 14px; line-height: 1.9; color: var(--ink-2); white-space: pre-line; }

/* ---------- 搜尋 ---------- */
.hit { padding: 13px 16px; margin-bottom: 9px; display: block; color: var(--ink); }
.hit:hover { border-color: var(--zhu-soft); text-decoration: none; }
.hit .where { font-size: 12px; color: var(--ink-3); letter-spacing: .06em; }
.hit .txt { font-size: 14px; line-height: 1.8; margin-top: 4px; }
mark { background: color-mix(in srgb, var(--gold) 35%, transparent); color: inherit; border-radius: 2px; padding: 0 1px; }

/* ---------- AI 抽屜 ---------- */
.ai-fab {
  position: fixed; right: 18px; bottom: 24px; z-index: 45;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--zhu); color: #fff; border: 0; box-shadow: var(--shadow);
  font-size: 19px; display: grid; place-items: center;
}
.ai-panel {
  position: fixed; inset: 0 0 0 auto; width: min(430px, 100%); z-index: 60;
  background: var(--paper-2); border-left: 1px solid var(--line);
  display: flex; flex-direction: column; transform: translateX(102%);
  transition: transform .24s ease; box-shadow: -12px 0 40px rgba(0, 0, 0, .12);
}
.ai-panel.open { transform: none; }
.ai-head { display: flex; align-items: center; gap: 10px; padding: 13px 16px; border-bottom: 1px solid var(--line); }
.ai-head h3 { font-size: 15px; flex: 1; }
.ai-log { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.bubble { padding: 11px 14px; border-radius: 13px; font-size: 14px; line-height: 1.85; max-width: 92%; }
.bubble.ai { background: var(--card); border: 1px solid var(--line); align-self: flex-start; }
.bubble.me { background: var(--zhu); color: #fff; align-self: flex-end; }
.bubble p { margin: 0 0 .7em; }
.bubble p:last-child { margin-bottom: 0; }
.bubble h3, .bubble h4 { font-size: 14px; margin: .6em 0 .3em; font-family: var(--sans); }
.bubble ul, .bubble ol { margin: .4em 0; padding-left: 1.3em; }
.ai-in { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); }
.ai-in input { flex: 1; padding: 9px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); font: inherit; }
.ai-quick { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 12px 10px; }
.scrim { position: fixed; inset: 0; background: rgba(20, 15, 10, .35); z-index: 55; opacity: 0; pointer-events: none; transition: opacity .24s; }
.scrim.on { opacity: 1; pointer-events: auto; }

.foot { border-top: 1px solid var(--line); margin-top: 40px; padding: 22px 18px 40px; text-align: center; color: var(--ink-3); font-size: 12.5px; }

.skel { background: linear-gradient(90deg, var(--line-2), var(--line), var(--line-2)); background-size: 200% 100%; animation: sk 1.3s infinite; border-radius: 6px; height: 14px; margin-bottom: 10px; }
@keyframes sk { to { background-position: -200% 0; } }

@media (max-width: 980px) {
  .hero, .g4, .g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reader-cols { grid-template-columns: minmax(0, 1fr); }
  .reader-side { position: static; }
}
@media (max-width: 760px) {
  .wrap { padding: 18px 14px 90px; }
  .brand span { display: none; }
  .reader-layout { grid-template-columns: minmax(0, 1fr); }
  .toc { position: static; max-height: none; margin-bottom: 14px; }
  .toc-list { max-height: 46vh; }
  .toc-toggle { display: inline-block; align-self: flex-start; margin-bottom: 8px; padding: 5px 14px; }
  .toc.collapsed .toc-list, .toc.collapsed .toc-search, .toc.collapsed .toc-hint { display: none; }
  .hero, .g2, .g3, .g4 { grid-template-columns: minmax(0, 1fr); }
  .chapter-body { font-size: calc(var(--read-size) - 1px); }
  .ai-fab { bottom: 20px; right: 14px; }
}
@media print {
  .top, .ai-fab, .ai-panel, .scrim, .foot, .toc, #bdfz-unified-widget { display: none !important; }
  body { background: #fff; }
  .card { box-shadow: none; border-color: #ccc; }
}