:root {
  --paper: #f2e9da;
  --paper-2: #e8dcc8;
  --ink: #2b2621;
  --ink-soft: #6a5f52;
  --cinnabar: #a83526;
  --cinnabar-dark: #87281b;
  --gold: #b8863b;
  --line: #d3c4a9;
  --ok: #2f6d4f;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--serif);
  color: var(--ink);
  background: #cbbca1;
  /* 宣纸纹理：两层错位斜纹 + 细噪点，避免大面积纯色显得单薄 */
  background-image:
    repeating-linear-gradient(52deg, rgba(255,255,255,.35) 0 2px, transparent 2px 7px),
    repeating-linear-gradient(-38deg, rgba(150,130,95,.16) 0 1px, transparent 1px 6px),
    radial-gradient(circle at 20% 10%, #f6eee0, #d9c9ac 70%);
  min-height: 100vh;
}

.paper {
  max-width: 980px;
  margin: 0 auto;
  padding: 26px 20px 60px;
}

.screen { display: none; }
.screen.active { display: block; animation: rise .32s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }

/* ---------- 首页 ---------- */
.masthead { display: flex; align-items: center; gap: 20px; margin-bottom: 18px; }
.seal {
  width: 74px; height: 74px; flex: 0 0 74px;
  background: var(--cinnabar); color: #fdf6ea;
  border-radius: 10px;
  display: grid; place-content: center;
  font-size: 25px; letter-spacing: 2px; line-height: 1.1;
  box-shadow: inset 0 0 0 3px rgba(255,255,255,.35), 0 6px 16px rgba(120,40,25,.3);
  writing-mode: vertical-rl;
}
.masthead-text h1 { margin: 0; font-size: 34px; letter-spacing: 6px; }
.sub { margin: 6px 0 0; color: var(--ink-soft); font-size: 13.5px; }

.corpus-bar {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 12px; background: rgba(255,255,255,.35); margin-bottom: 20px;
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }
.dot.live { background: var(--ok); box-shadow: 0 0 0 3px rgba(47,109,79,.18); }
.dot.off { background: #b0a087; }

.levels { display: grid; grid-template-columns: repeat(auto-fit, minmax(268px, 1fr)); gap: 14px; }

.level-card {
  text-align: left; cursor: pointer; font-family: var(--serif);
  background: linear-gradient(180deg, #fbf5ea, var(--paper-2));
  border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 16px 14px; color: var(--ink);
  box-shadow: 0 2px 0 rgba(120,100,70,.12);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s;
}
.level-card:hover { transform: translateY(-3px); border-color: var(--cinnabar); box-shadow: 0 10px 22px rgba(120,80,50,.18); }
.level-card:disabled { opacity: .5; cursor: progress; }
.lc-top { display: flex; align-items: baseline; gap: 10px; }
.lc-name { font-size: 22px; letter-spacing: 3px; }
.lc-tag { font-size: 11px; color: #fff; background: var(--cinnabar); border-radius: 4px; padding: 2px 6px; letter-spacing: 1px; }
.lc-tag.full { background: var(--gold); }
.lc-desc { margin: 8px 0 12px; font-size: 13px; color: var(--ink-soft); line-height: 1.6; }
.lc-meta { display: flex; gap: 14px; flex-wrap: wrap; font-size: 11.5px; color: var(--ink-soft); border-top: 1px dashed var(--line); padding-top: 10px; }
.lc-meta b { font-size: 15px; color: var(--ink); font-weight: 600; }
.lc-stars { margin-left: auto; color: var(--gold); letter-spacing: 1px; }

.home-foot { margin-top: 26px; display: flex; gap: 16px; align-items: flex-start; flex-wrap: wrap; }
.daily { flex: 1 1 320px; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; background: rgba(255,255,255,.42); }
.daily-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; letter-spacing: 2px; }
.daily-body { font-size: 14px; line-height: 1.9; white-space: pre-wrap; }
.daily-body .who { color: var(--ink-soft); font-size: 12.5px; }
.lang-switch { display: flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.lang-switch button { font-family: var(--serif); border: 0; background: transparent; color: var(--ink-soft); padding: 3px 11px; cursor: pointer; font-size: 13px; }
.lang-switch button.on { background: var(--cinnabar); color: #fdf6ea; }

/* ---------- 通用控件 ---------- */
button { font-family: var(--serif); }
.primary {
  background: var(--cinnabar); color: #fdf6ea; border: 0; border-radius: 8px;
  padding: 11px 22px; font-size: 15px; letter-spacing: 2px; cursor: pointer;
}
.primary:hover { background: var(--cinnabar-dark); }
.ghost { background: transparent; border: 1px solid var(--line); color: var(--ink-soft); border-radius: 8px; padding: 9px 16px; font-size: 13px; cursor: pointer; }
.ghost:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.back { background: none; border: 0; color: var(--ink-soft); cursor: pointer; font-size: 14px; padding: 6px 0; }
.back:hover { color: var(--cinnabar); }

.nav { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.nav h2 { margin: 0; font-size: 21px; letter-spacing: 4px; flex: 1; }
.map-summary { font-size: 12.5px; color: var(--ink-soft); }

/* ---------- 关卡地图 ---------- */
.stages { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.stage {
  position: relative; text-align: center; cursor: pointer;
  border: 1px solid var(--line); border-radius: 12px; padding: 14px 8px 11px;
  background: linear-gradient(180deg, #fbf5ea, var(--paper-2)); font-family: var(--serif); color: var(--ink);
}
.stage:hover { border-color: var(--cinnabar); }
.stage .no { font-size: 20px; letter-spacing: 1px; }
.stage .nm { font-size: 12px; color: var(--ink-soft); margin-top: 3px; }
.stage .st { color: var(--gold); font-size: 13px; letter-spacing: 2px; margin-top: 6px; }
.stage .bs { font-size: 11px; color: var(--ink-soft); }
.stage.locked { opacity: .45; cursor: not-allowed; }
.stage.locked::after { content: "封"; position: absolute; top: 6px; right: 8px; font-size: 11px; color: var(--cinnabar); border: 1px solid var(--cinnabar); border-radius: 3px; padding: 0 3px; }

/* ---------- 飞花令（挂在关卡地图下方，选一个令字开局） ---------- */
.fh-head {
  margin: 30px 0 6px; padding-top: 14px; border-top: 1px dashed var(--line);
  font-size: 19px; letter-spacing: 4px;
}
.fh-sub { font-size: 12.5px; color: var(--ink-soft); line-height: 1.7; margin-bottom: 12px; }
.fh-sub b { color: var(--ink); }
#fh-chips button {
  display: flex; flex-direction: column; align-items: center; gap: 1px;
  min-width: 62px; padding: 8px 10px 7px;
}
#fh-chips .fh-zi { font-size: 20px; letter-spacing: 1px; color: var(--ink); }
#fh-chips.on .fh-zi, #fh-chips button.on .fh-zi { color: #fdf6ea; }
#fh-chips .fh-n { font-size: 11px; letter-spacing: 0; color: var(--ink-soft); }
#fh-chips button:hover .fh-n { color: var(--cinnabar); }
#fh-chips button[disabled] { opacity: .4; cursor: not-allowed; }

/* 令字在题面、揭示、小抄里都要跳出来：一局六题咬的是同一个字 */
.fh { color: var(--cinnabar); border-bottom: 2px solid rgba(168, 53, 38, .3); padding: 0 1px; }

.fh-digest {
  text-align: left; border-top: 1px dashed var(--line); padding-top: 14px;
  margin-bottom: 20px; display: grid; gap: 11px;
}
.fh-digest[hidden] { display: none; }
.dg-line { font-size: 17px; line-height: 1.7; letter-spacing: 1.2px; }
.dg-kind {
  font-size: 11px; color: #fff; background: var(--gold); border-radius: 4px;
  padding: 1px 6px; letter-spacing: 1px; margin-right: 8px; vertical-align: 2px;
}
.dg-line .hint { font-size: 12.5px; color: var(--ink-soft); margin-left: 8px; letter-spacing: 0; }
.dg-ans { font-size: 12.5px; color: var(--ink-soft); margin-top: 2px; }

/* ---------- 答题 ---------- */
.hud { display: flex; align-items: center; gap: 14px; margin-bottom: 8px; }
.hud-mid { flex: 1; }
.qmeta { font-size: 12px; color: var(--ink-soft); margin-bottom: 5px; letter-spacing: 1px; }
.timer { height: 5px; background: rgba(120,100,70,.18); border-radius: 3px; overflow: hidden; }
.timer i { display: block; height: 100%; width: 100%; background: var(--gold); transition: width .1s linear; }
.timer.low i { background: var(--cinnabar); }
.lives { font-size: 16px; letter-spacing: 3px; color: var(--cinnabar); }
.lives .lost { color: rgba(120,100,70,.3); }
.score-box { font-size: 22px; min-width: 74px; text-align: right; }
.score-box small { font-size: 11px; color: var(--ink-soft); margin-left: 2px; }
.combo { height: 18px; font-size: 12px; color: var(--cinnabar); text-align: right; letter-spacing: 1px; }

.card {
  border: 1px solid var(--line); border-radius: 14px;
  background: linear-gradient(180deg, #fbf6ec, var(--paper-2));
  padding: 22px 22px 20px; box-shadow: 0 3px 0 rgba(120,100,70,.1);
}
.prompt { font-size: 13px; color: var(--ink-soft); letter-spacing: 2px; margin-bottom: 14px; }
.stem { font-size: 25px; line-height: 1.75; letter-spacing: 2px; margin-bottom: 22px; }
.stem .blank { color: var(--cinnabar); border-bottom: 2px solid var(--cinnabar); padding: 0 6px; letter-spacing: 4px; }
.stem .hint { display: block; font-size: 13px; color: var(--ink-soft); margin-top: 10px; letter-spacing: 1px; }

.options { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 11px; }
.opt {
  text-align: left; cursor: pointer; font-family: var(--serif);
  border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.5);
  padding: 13px 15px; font-size: 17px; color: var(--ink); letter-spacing: 1px;
  display: flex; gap: 10px; align-items: baseline;
}
.opt:hover:not(:disabled) { border-color: var(--cinnabar); background: #fff8ec; }
.opt .gi { font-size: 12px; color: var(--ink-soft); flex: 0 0 auto; }
.opt.right { border-color: var(--ok); background: rgba(47,109,79,.12); }
.opt.wrong { border-color: var(--cinnabar); background: rgba(168,53,38,.1); }
.opt:disabled { cursor: default; opacity: .9; }

.reveal { margin-top: 14px; }
.reveal.hidden { display: none; }
.reveal-head { display: flex; justify-content: space-between; align-items: baseline; font-size: 15px; margin-bottom: 12px; }
.reveal-head .yes { color: var(--ok); }
.reveal-head .no { color: var(--cinnabar); }
.source { font-size: 12px; color: var(--ink-soft); }
.poem-lines { font-size: 18px; line-height: 2; letter-spacing: 1.5px; border-left: 3px solid var(--cinnabar); padding-left: 14px; margin-bottom: 14px; }
.poem-lines em { font-style: normal; background: rgba(184,134,59,.28); }
.poem-lines .omit { font-size: 13px; color: var(--ink-soft); letter-spacing: 1px; }
.explain { font-size: 13px; color: var(--ink-soft); margin-bottom: 16px; line-height: 1.8; }

/* 逐项解析：正确项与每个错误项各自的出处 */
.notes-head {
  display: flex; align-items: baseline; gap: 9px; flex-wrap: wrap;
  font-size: 13px; letter-spacing: 2px; color: var(--ink);
  border-top: 1px dashed var(--line); padding-top: 12px; margin-bottom: 9px;
}
.notes-tip { font-size: 11.5px; letter-spacing: 0; color: var(--ink-soft); }
.opt-notes { display: grid; gap: 6px; margin-bottom: 16px; }
.ono {
  display: grid; grid-template-columns: auto 1fr; gap: 9px; align-items: baseline;
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 11px; background: rgba(255,255,255,.42);
}
.ono.ok { border-color: var(--ok); background: rgba(47,109,79,.1); }
.ono.chose { box-shadow: inset 0 0 0 1px rgba(168,53,38,.4); }
.ono .gi { font-size: 12px; color: var(--ink-soft); }
.on-t { font-size: 15px; letter-spacing: 1px; }
.on-tag { font-style: normal; font-size: 11px; border-radius: 4px; padding: 1px 6px; margin-left: 7px; letter-spacing: 1px; white-space: nowrap; }
.on-tag.ok { background: var(--ok); color: #fdf6ea; }
.on-tag.bad { background: var(--cinnabar); color: #fdf6ea; }
.on-s { font-size: 12px; color: var(--ink-soft); grid-column: 2 / -1; }

/* ---------- 结算 ---------- */
.result-card { max-width: 460px; margin: 40px auto 0; text-align: center; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(180deg, #fbf6ec, var(--paper-2)); padding: 30px 26px; }
.big-seal { width: 82px; height: 82px; margin: 0 auto 14px; border-radius: 12px; background: var(--cinnabar); color: #fdf6ea; display: grid; place-content: center; font-size: 22px; letter-spacing: 2px; writing-mode: vertical-rl; box-shadow: inset 0 0 0 3px rgba(255,255,255,.35); }
.big-seal.fail { background: #7d7469; }
.stars { font-size: 27px; color: var(--gold); letter-spacing: 6px; margin-bottom: 8px; }
.result-card h2 { margin: 0 0 6px; font-size: 20px; letter-spacing: 2px; }
.result-sub { margin: 0 0 18px; font-size: 13px; color: var(--ink-soft); }
.result-stats { display: flex; justify-content: center; gap: 26px; margin-bottom: 22px; }
.result-stats div { font-size: 12px; color: var(--ink-soft); }
.result-stats b { display: block; font-size: 21px; color: var(--ink); }
.result-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

@media (max-width: 620px) {
  .stem { font-size: 20px; }
  .masthead-text h1 { font-size: 26px; letter-spacing: 3px; }
}

/* ---------- 分档书目 / 全库检索 ---------- */
.browse-nav { display: flex; gap: 10px; margin-top: 16px; }

.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.tabs button {
  font-family: var(--serif); cursor: pointer; font-size: 14px; letter-spacing: 2px;
  border: 1px solid var(--line); border-radius: 20px; padding: 7px 15px;
  background: rgba(255,255,255,.45); color: var(--ink-soft);
}
.tabs button.on { background: var(--cinnabar); border-color: var(--cinnabar); color: #fdf6ea; }
.tabs button b { font-size: 11.5px; font-weight: normal; letter-spacing: 0; opacity: .75; margin-left: 5px; }

.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 10px; }
.filter-bar input[type="search"] {
  flex: 1 1 230px; font-family: var(--serif); font-size: 15px; color: var(--ink);
  padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.5);
}
.filter-bar select {
  font-family: var(--serif); font-size: 13.5px; color: var(--ink); cursor: pointer;
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.5);
}
.filter-bar .lang-switch button { padding: 8px 12px; }
.chip {
  display: flex; align-items: center; gap: 6px; cursor: pointer; font-size: 13px; color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: 20px; padding: 7px 12px; background: rgba(255,255,255,.4);
}
button.chip { font-family: var(--serif); letter-spacing: 1px; }
button.chip:hover { border-color: var(--cinnabar); color: var(--cinnabar); }

.list-count { font-size: 12px; color: var(--ink-soft); letter-spacing: 1px; margin-bottom: 10px; }
.list-count b { color: var(--ink); }

.poem-list { display: grid; gap: 8px; }
.poem-row { border: 1px solid var(--line); border-radius: 10px; background: rgba(255,255,255,.42); overflow: hidden; }
.poem-row + .poem-row { margin-top: 0; }
.pr-head { display: flex; align-items: baseline; gap: 10px; padding: 11px 14px; cursor: pointer; flex-wrap: wrap; }
.pr-head:hover { background: #fff8ec; }
.pr-t { font-size: 16.5px; letter-spacing: 1px; }
.pr-a { font-size: 12.5px; color: var(--ink-soft); }
.pr-badge { font-size: 11px; color: #fff; background: var(--gold); border-radius: 4px; padding: 2px 6px; letter-spacing: 1px; }
.pr-body {
  display: none; padding: 6px 14px 14px; border-top: 1px dashed var(--line);
  font-size: 16px; line-height: 2; letter-spacing: 1.2px;
}
.poem-row.open .pr-body { display: block; }
.pr-omit { font-size: 12.5px; color: var(--ink-soft); letter-spacing: 0; }

.grp { border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.34); margin-bottom: 10px; }
.grp-head { display: flex; align-items: baseline; gap: 12px; padding: 12px 15px; cursor: pointer; flex-wrap: wrap; }
.grp-head:hover { background: #fff8ec; }
.grp-name { font-size: 19px; letter-spacing: 3px; }
.grp-meta { font-size: 12px; color: var(--ink-soft); flex: 1; }
.grp-toggle { font-size: 12px; color: var(--cinnabar); letter-spacing: 1px; }
.grp-body { display: none; padding: 0 15px 14px; }
.grp.open > .grp-body { display: block; }

.more { display: block; margin: 12px auto 0; }
.more[hidden] { display: none; }
.more[disabled] { opacity: .5; cursor: default; }
.notice {
  border: 1px dashed var(--line); border-radius: 10px; padding: 14px 16px; background: rgba(255,255,255,.4);
  font-size: 13px; color: var(--ink-soft); line-height: 1.8;
}
.notice b { color: var(--cinnabar); }

@media (max-width: 620px) {
  .pr-t { font-size: 15px; }
  .grp-name { font-size: 17px; letter-spacing: 2px; }
  .filter-bar input[type="search"] { flex: 1 1 100%; }
}