@charset "UTF-8";
:root {
  color-scheme: light;
  --ink: #1c1612;
  --muted: #7a6a58;
  --paper: #f3e6c8;
  --sheet: #fbf6ea;
  --cinnabar: #c23b2a;
  --cinnabar-deep: #9e2b1e;
  --indigo: #1f4e79;
  --line: #e2d2ae;
  --grid: rgba(194, 59, 42, 0.11);
  --ok: #2f6b45;
  --stuck: #9e2b1e;
  font-family: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background:
    radial-gradient(1200px 500px at 10% -10%, #f8efd8 0%, transparent 50%),
    repeating-linear-gradient(0deg, transparent 0 31px, var(--grid) 31px 32px),
    repeating-linear-gradient(90deg, transparent 0 31px, var(--grid) 31px 32px),
    var(--paper);
  color: var(--ink);
  font-size: 16px;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; }
button:disabled { opacity: .45; cursor: not-allowed; }
button:focus-visible, select:focus-visible, input:focus-visible, textarea:focus-visible, .tile:focus-visible {
  outline: 3px solid #e08b7a;
  outline-offset: 3px;
}
[hidden] { display: none !important; }
.login-panel {
  max-width: 420px;
  margin: 8vh auto;
  padding: 28px;
  background: var(--sheet);
  border: 1px solid var(--line);
}
.login-panel h1 { font-size: 36px; letter-spacing: .28em; margin: 8px 0 12px; }
.login-panel p { color: var(--muted); line-height: 1.8; }
.login-panel label { display: block; margin: 18px 0 8px; }
.login-panel input { width: 100%; padding: 14px; border: 1px solid var(--line); background: #fffaf0; font-size: 16px; }
.login-panel button { width: 100%; margin-top: 16px; }
.pinyin {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  font-weight: 600;
  letter-spacing: .04em;
}

.masthead {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 28px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
  font-size: 28px;
  letter-spacing: .18em;
}
.brand small {
  display: block;
  font-size: 11px;
  letter-spacing: .42em;
  color: var(--muted);
  margin-top: 4px;
  font-family: "Kaiti SC", "STKaiti", "Songti SC", serif;
}
.brand-seal {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: #f8ead2;
  background: var(--cinnabar);
  border: 2px solid var(--cinnabar-deep);
  box-shadow: inset 0 0 0 3px #f3c7b8, 0 2px 0 #7c1d14;
  font-size: 22px;
  letter-spacing: 0;
}
.connection {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "PingFang SC", "Hiragino Sans GB", sans-serif;
}
.connection i { width: 8px; height: 8px; border-radius: 50%; background: #b7a48a; }
.connection.online i { background: var(--ok); }
.connection.offline { color: var(--stuck); }

main { max-width: 1080px; margin: 0 auto; padding: 0 20px 48px; }
.play-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 4px 0 12px;
}
.compact-brand {
  text-decoration: none;
  color: var(--cinnabar);
  letter-spacing: .28em;
  font-size: 18px;
}
.play-context { flex: 1; min-width: 0; display: flex; gap: 10px; align-items: baseline; }
.play-context span { color: var(--muted); font-size: 13px; }
.secondary, .primary, .mark {
  min-height: 44px;
  padding: 8px 16px;
  border-radius: 2px;
  font-size: 15px;
}
.secondary {
  background: transparent;
  border: 1px solid #cbb892;
  color: #5d4c3a;
}
.primary {
  background: var(--cinnabar);
  color: #fff7ea;
  box-shadow: 0 1px 0 var(--cinnabar-deep);
}
.full-width { width: 100%; }

.board-card, .paper-card, .coach-card {
  background: var(--sheet);
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px #6a4a2214;
}
.board-card { padding: 22px 24px 18px; }
.board-heading { display: flex; justify-content: space-between; gap: 12px; align-items: start; }
.board-heading h2 { margin: 6px 0 0; font-size: 26px; font-weight: 600; letter-spacing: .08em; }
.eyebrow {
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--cinnabar);
  font-family: "PingFang SC", sans-serif;
}
.turn-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px dashed var(--cinnabar);
  color: var(--cinnabar-deep);
  padding: 7px 12px;
  font-size: 12px;
  white-space: nowrap;
}
.turn-pill i { width: 9px; height: 9px; background: var(--cinnabar); border-radius: 50%; }
.board-prompt { color: var(--muted); line-height: 1.7; margin: 8px 0 0; }
.section-tabs { display: flex; gap: 8px; margin: 14px 0 4px; }
.section-tabs button {
  flex: 1;
  min-height: 44px;
  background: #fffaf0;
  border: 1px solid var(--line);
  letter-spacing: .08em;
}
.section-tabs button.selected {
  background: var(--cinnabar);
  color: #fff7ea;
  border-color: var(--cinnabar-deep);
}

.blend-stage {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px dashed #d9c6a0;
}
.blend-slot {
  min-width: 72px;
  padding: 8px 12px;
  background: #fffaf0;
  border: 1px solid var(--line);
  text-align: center;
}
.blend-slot span { display: block; font-size: 11px; color: var(--muted); letter-spacing: .2em; }
.blend-slot strong { display: block; font-size: 28px; line-height: 1.2; color: var(--indigo); }
.blend-slot.result strong { color: var(--cinnabar); }
.blend-plus, .blend-arrow { font-size: 22px; color: var(--muted); }
.tile.picked { border-color: var(--indigo); box-shadow: 0 0 0 2px #c5d4e6; }
.blend-tones { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; }
.tone-btn {
  min-width: 72px;
  min-height: 58px;
  padding: 6px 10px;
  background: #fffaf0;
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.tone-btn small { font-size: 11px; color: var(--muted); letter-spacing: .12em; }
.tone-btn strong { font-size: 22px; color: var(--indigo); }
.tone-btn.sweep { background: var(--cinnabar); color: #fff7ea; border-color: var(--cinnabar-deep); }
.tone-btn.sweep strong, .tone-btn.sweep small { color: #fff7ea; }
.chart { margin-top: 16px; display: grid; gap: 18px; }
.chart-block h3 {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: .32em;
  color: var(--muted);
  font-weight: 500;
}
.tiles { display: flex; flex-wrap: wrap; gap: 8px; }
.final-groups { display: grid; gap: 12px; }
.tile {
  min-width: 58px;
  min-height: 58px;
  padding: 6px 8px 8px;
  background: #fffaf0;
  border: 1px solid #d8c49a;
  box-shadow: 1px 2px 0 #cbb58a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--ink);
}
.tile .glyph {
  font-size: 20px;
  color: var(--indigo);
  line-height: 1;
}
.tile small { font-size: 11px; color: #8a7358; }
.tile.target {
  border-color: var(--cinnabar);
  box-shadow: 0 0 0 2px #f3c7b8, 1px 2px 0 var(--cinnabar-deep);
  background: #fff3e4;
}
.tile.current { outline: 2px solid var(--indigo); }
.tile:hover { transform: translateY(-1px); }

.lesson-panel {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed #d9c6a0;
}
.lesson-copy h3 { margin: 6px 0 8px; font-size: 28px; letter-spacing: .06em; }
.lesson-copy p { margin: 0; color: #5a4a38; line-height: 1.75; }
.speak-row { display: flex; gap: 12px; align-items: center; margin: 16px 0 12px; }
.hear { min-width: 120px; letter-spacing: .18em; }
.example-chip {
  border: 1px solid var(--indigo);
  color: var(--indigo);
  padding: 6px 12px;
  font-size: 14px;
}
.choices { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.choice {
  min-height: 72px;
  background: #fffaf0;
  border: 1px solid #d4c09a;
  font-size: 28px;
  color: var(--indigo);
}
.choice.correct { background: #e7f3ea; border-color: var(--ok); color: var(--ok); }
.choice.wrong { background: #fbe8e3; border-color: var(--stuck); color: var(--stuck); }

.passage {
  font-size: 22px;
  line-height: 2.4;
  padding: 8px 4px 0;
}
.passage p { margin: 0 0 6px; }
ruby { ruby-position: over; }
rt {
  font-family: "Iowan Old Style", Palatino, serif;
  font-size: 12px;
  color: var(--indigo);
  font-weight: 600;
}

.mark-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.mark.ok { background: var(--ok); color: #f6fff8; }
.mark.okish { background: #c48a2b; color: #fff8ea; }
.mark.stuck { background: var(--cinnabar); color: #fff7ea; }
.inline-assessment, .assessment {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid #d8c49a;
  background: #fff9ee;
  line-height: 1.7;
}
.inline-assessment.success, .assessment.success { border-color: #9cc5a8; background: #f1f8f2; }
.inline-assessment.retry, .assessment.retry { border-color: #e3b089; background: #fff4ea; }
.board-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.board-actions .primary { margin-left: auto; }

.view-heading { display: flex; justify-content: space-between; gap: 16px; align-items: start; margin: 8px 0 18px; }
.view-heading h2 { margin: 0; font-size: 28px; letter-spacing: .12em; }
.quiet { color: var(--muted); font-size: 13px; line-height: 1.75; }
.paper-card { padding: 20px; margin-bottom: 16px; }
.skill-label { display: block; margin: 12px 0 6px; font-size: 13px; color: var(--muted); }
select, input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fffaf0;
  padding: 10px 12px;
  border-radius: 2px;
}
.records-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.skills { display: grid; gap: 10px; margin-top: 12px; }
.skill-row { padding-bottom: 10px; border-bottom: 1px dashed var(--line); }
.skill-row-heading { display: flex; justify-content: space-between; gap: 8px; }
ol { list-style: none; margin: 0; padding: 0; }
ol li { padding: 12px 0; border-bottom: 1px solid #efe3c8; display: grid; gap: 4px; }
ol li:last-child { border: 0; }
.history-success { color: var(--ok); }
.history-retry { color: var(--cinnabar-deep); }

.app-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(420px, 100vw);
  height: 100dvh;
  max-height: 100dvh;
  margin: 0;
  border: 0;
  border-left: 1px solid var(--line);
  background: var(--paper);
  padding: 0 20px 28px;
  overflow: auto;
}
.app-drawer::backdrop { background: #3a241466; }
.drawer-heading {
  position: sticky;
  top: 0;
  background: var(--paper);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}
.drawer-heading h2 { margin: 0; font-size: 20px; letter-spacing: .12em; }
.profiles { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.profile-option {
  padding: 8px 16px;
  background: #fffaf0;
  border: 1px solid var(--line);
}
.profile-option.selected { background: var(--cinnabar); color: #fff7ea; border-color: var(--cinnabar-deep); }
.profile-caption { display: block; margin-top: 10px; color: var(--muted); font-size: 13px; }
.add-profile { margin-top: 12px; }
.add-profile summary { cursor: pointer; color: var(--cinnabar); }
.add-profile form { display: grid; gap: 8px; margin-top: 10px; }
.page-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 18px 0; }
.page-nav button { background: #fffaf0; border: 1px solid var(--line); min-height: 44px; }
.page-nav button[aria-current=page] { background: var(--cinnabar); color: #fff7ea; }
.mode-card { background: var(--sheet); border: 1px solid var(--line); padding: 16px; display: grid; gap: 8px; }
.coach-card { padding: 20px; margin-bottom: 16px; }
.coach-card h2 { margin: 8px 0 10px; font-size: 24px; }

.print-root { display: grid; gap: 24px; }
.sheet {
  background: white;
  color: #1a1a1a;
  border: 1px solid #d7c7a4;
  padding: 18px 22px;
  min-height: 240px;
}
.sheet header { text-align: center; border-bottom: 2px dashed #d9b7a0; padding-bottom: 8px; margin-bottom: 12px; }
.sheet h1 { margin: 0; font-size: 22px; letter-spacing: .2em; }
.sheet .meta { font-size: 12px; color: #666; margin-top: 6px; display: flex; justify-content: center; gap: 16px; }
.visit { display: flex; gap: 10px; justify-content: center; margin: 10px 0 14px; }
.visit span {
  border: 1px solid var(--cinnabar);
  color: var(--cinnabar);
  padding: 4px 12px;
  min-width: 48px;
  text-align: center;
}
.print-q { margin: 0 0 14px; }
.print-q strong { display: block; margin-bottom: 6px; }
.print-choices { display: flex; gap: 16px; font-size: 22px; color: var(--indigo); }
.print-section { font-size: 15px; letter-spacing: .18em; margin: 12px 0 8px; }
.print-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 14px; }
.print-grid .print-q { margin: 0; }
.print-grid .print-q strong { font-size: 12px; }
.print-grid .print-choices { font-size: 16px; gap: 8px; }
.feedback-strip {
  margin-top: 16px;
  padding: 10px;
  border: 1px dashed #c23b2a;
  font-size: 13px;
  display: grid;
  gap: 6px;
}
.answer-key { background: #faf6ee; }

#toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #2a1c14;
  color: #fff3df;
  padding: 12px 18px;
  z-index: 20;
}

@media (max-width: 740px) {
  .masthead, .compact-brand, .desk-only, .board-heading, .board-prompt, #open-coach { display: none !important; }
  main { padding: 8px 10px 28px; }
  .play-bar {
    gap: 8px;
    min-height: 44px;
    padding: 2px 0 8px;
    justify-content: space-between;
  }
  .play-context { flex-direction: column; gap: 0; }
  .play-context strong { display: none; }
  .play-context span { font-size: 13px; color: var(--ink); }
  .board-card { padding: 12px 10px 14px; }
  .section-tabs { margin: 0 0 8px; }
  .section-tabs button { padding: 8px 4px; font-size: 13px; letter-spacing: 0; }
  .lesson-panel { margin-top: 4px; padding-top: 8px; border-top: 0; }
  .lesson-copy p { display: none; }
  .lesson-copy h3 { font-size: 26px; margin: 4px 0 8px; }
  .choices { grid-template-columns: 1fr; }
  .mark-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 6px; }
  .mark { padding: 10px 6px; font-size: 14px; }
  .board-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .board-actions .primary { margin-left: 0; grid-column: 1 / -1; }
  .records-grid { grid-template-columns: 1fr; }
  .blend-stage { gap: 6px; }
  .blend-slot { min-width: 56px; padding: 6px 8px; }
  .blend-slot strong { font-size: 22px; }
  .app-drawer {
    inset: auto 0 0;
    width: 100%;
    height: auto;
    max-height: 90dvh;
    border-radius: 18px 18px 0 0;
  }
  .tile { min-width: 52px; min-height: 52px; }
}

@media print {
  body { background: white; }
  .masthead, .play-bar, .no-print, .app-drawer, #toast, #view-board, #view-library, #view-records { display: none !important; }
  #view-print { display: block !important; }
  main { max-width: none; padding: 0; }
  .print-root { gap: 0; }
  .sheet {
    border: 0;
    box-shadow: none;
    min-height: auto;
    page-break-after: always;
    padding: 8mm 10mm;
  }
  .answer-key { page-break-before: always; }
  @page { size: A4 portrait; margin: 10mm; }
}