/* Hanivio — Editorial Voice identity
   Charcoal Ink #222222 · Paper #F7F4EE · Cinnabar #C5412D · Dust Blue #8BA1B1 · Warm Taupe #B8ACA0 */

@import url('./components.css');

:root {
  --ink: #222222;
  --paper: #F7F4EE;
  --cinnabar: #C5412D;
  --dust: #8BA1B1;
  --taupe: #B8ACA0;
  --hover-bg: #f3e8de;
  --hover-bg-light: #f6ece4;
  --hover-bg-cinnabar: #f9ece8;
  --hover-bg-error: #fef0f0;
  --code-bg: #efe9dd;
  --cell-empty: #e2dccb;
  --known-muted: #aaa496;
  --skeleton-bg1: #f0eadf;
  --skeleton-bg2: #f8f4ec;
  --tone2: #2E7D4F;
  --tone3: #2B5FA8;
  --grade-hard: #d9a441;
  --grade-hard-text: #a87a28;
  --grade-ok-bg: #eef5ef;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

[data-theme="dark"] {
  --ink: #e0e0e0;
  --paper: #1a1a1a;
  --cinnabar: #E05A47;
  --dust: #6B8A9E;
  --taupe: #5A5A5A;
  --hover-bg: #2a2a2a;
  --hover-bg-light: #333333;
  --hover-bg-cinnabar: #3a2020;
  --hover-bg-error: #3a2020;
  --code-bg: #2a2a2a;
  --cell-empty: #4a4a4a;
  --known-muted: #6a6a6a;
  --skeleton-bg1: #2a2a2a;
  --skeleton-bg2: #333333;
  --tone2: #4caf50;
  --tone3: #5c9ced;
  --grade-hard: #ffb74d;
  --grade-hard-text: #ffa726;
  --grade-ok-bg: #1b3a1b;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* header */
.site-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  max-width: 72rem;
  margin: 0 auto;
  padding: 1.5rem 2rem 1.25rem;
  border-bottom: 1px solid var(--taupe);
}

.wordmark {
  font-family: var(--serif);
  font-size: 1.6rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--ink);
}

.wordmark .mark { color: var(--cinnabar); }
.wordmark.small { font-size: 1.2rem; }

.site-nav {
  display: flex;
  gap: 1.5rem;
  align-items: baseline;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.site-nav a:hover { color: var(--cinnabar); }

/* hero */
.hero {
  max-width: 68ch;
  margin: 0 auto;
  padding: 5.5rem 2rem 4rem;
}

.pronunciation {
  margin: 0 0 1.25rem;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dust);
}

.pronunciation strong { color: var(--ink); }

h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  line-height: 1.12;
  margin: 0 0 1.5rem;
}

.hero-sub {
  font-size: 1.12rem;
  max-width: 54ch;
  margin: 0 0 2.5rem;
  color: var(--ink);
}

.cta-row { display: flex; flex-wrap: wrap; gap: 1rem; }

.cta {
  text-decoration: none;
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  padding: 0.7rem 1.3rem;
  border: 1px solid var(--ink);
  border-radius: 2px;
  color: var(--ink);
  background: transparent;
}

.cta:hover { border-color: var(--cinnabar); color: var(--cinnabar); }

.cta.primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.cta.primary:hover {
  background: var(--cinnabar);
  border-color: var(--cinnabar);
  color: #fff;
}

/* strip */
.rule-strip {
  display: flex;
  justify-content: center;
  gap: 1.6rem;
  padding: 0.9rem 2rem;
  border-top: 1px solid var(--taupe);
  border-bottom: 1px solid var(--taupe);
  color: var(--dust);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
}

/* sections */
.section-grid {
  display: grid;
  grid-template-columns: 200px minmax(0, 68ch);
  gap: 3rem;
  max-width: 72rem;
  margin: 0 auto;
  padding: 4.5rem 2rem 1rem;
}

.section-label {
  position: sticky;
  top: 1.5rem;
  align-self: start;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dust);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.section-label .num {
  color: var(--cinnabar);
  font-variant-numeric: tabular-nums;
}

h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
  line-height: 1.25;
  margin: 0 0 1.5rem;
}

.section-body p { margin: 0 0 1.1rem; }

.pull {
  border-left: 2px solid var(--cinnabar);
  padding-left: 1.25rem;
  font-family: var(--serif);
  font-size: 1.18rem;
  font-style: italic;
  color: var(--ink);
}

.feature {
  padding: 1.4rem 0;
  border-top: 1px solid var(--taupe);
}

.feature h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.22rem;
  margin: 0 0 0.5rem;
}

.feature p {
  margin: 0;
  color: var(--ink);
  font-size: 0.98rem;
}

.supporters {
  margin: 2.5rem 0 3rem;
  padding: 1.6rem 2rem;
  border: 1px solid var(--taupe);
  background: var(--paper);
}

.supporters p {
  font-family: var(--serif);
  font-size: 1.3rem;
  margin: 0 0 0.5rem;
}

.supporters footer { color: var(--dust); font-size: 0.95rem; }

/* footer */
.site-foot {
  max-width: 72rem;
  margin: 5rem auto 0;
  padding: 2rem;
  border-top: 1px solid var(--taupe);
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  align-items: baseline;
}

.site-foot nav { display: flex; gap: 1.4rem; }

.site-foot a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.88rem;
}

.site-foot a:hover { color: var(--cinnabar); }

.fine { width: 100%; color: var(--dust); font-size: 0.8rem; margin: 0; }

/* chinese typography adjustments */
html[lang="zh"] body { font-family: var(--sans); }
html[lang="zh"] h1, html[lang="zh"] h2, html[lang="zh"] .supporters p, html[lang="zh"] .pull { letter-spacing: 0.01em; }

@media (max-width: 820px) {
  .section-grid { grid-template-columns: 1fr; gap: 1.25rem; padding-top: 3.5rem; }
  .section-label { position: static; flex-direction: row; gap: 0.9rem; align-items: baseline; }
  .hero { padding-top: 3.5rem; }
  .site-head { flex-wrap: wrap; gap: 0.75rem; }
}

/* ============ web tools ============ */

.site-nav a.active { color: var(--cinnabar); border-bottom: 1px solid var(--cinnabar); }

.tool-main { max-width: 76rem; margin: 0 auto; padding: 3rem 2rem 2rem; }
.tool-main.narrow { max-width: 54rem; }

.kicker {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dust);
  margin: 0 0 0.6rem;
}

.lede { max-width: 62ch; color: var(--ink); margin: 0 0 1.6rem; }
.lede a { color: inherit; }

.muted { color: var(--dust); font-size: 0.88rem; }
.note { margin-top: 0.75rem; }

code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85em;
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 2px;
}

.btn {
  font: inherit;
  font-size: 0.9rem;
  background: transparent;
  border: 1px solid var(--ink);
  border-radius: 2px;
  padding: 0.45rem 1.1rem;
  color: var(--ink);
  cursor: pointer;
}
.btn:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.btn.small { font-size: 0.8rem; padding: 0.25rem 0.7rem; }

/* tone bar */
.tone-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 1.25rem; }
.tone-chip {
  font: inherit;
  font-size: 0.85rem;
  padding: 0.3rem 0.85rem;
  border: 1px solid var(--taupe);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.tone-chip:hover { border-color: var(--cinnabar); }
.tone-chip.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.tone-bar.small .tone-chip { font-size: 0.78rem; padding: 0.2rem 0.6rem; }

/* chart table */
.chart-wrap { overflow: auto; border: 1px solid var(--taupe); border-radius: 4px; background: var(--paper); }

.chart-table { border-collapse: collapse; font-size: 0.8rem; }

.chart-table th {
  position: sticky;
  background: var(--paper);
  font-weight: 500;
  color: var(--dust);
  z-index: 2;
}
.chart-table thead th { top: 0; padding: 0.5rem 0.3rem; font-size: 0.82rem; }
.chart-table .row-label { left: 0; top: 0; text-align: right; padding: 0.3rem 0.55rem; z-index: 3; min-width: 2.2rem; }
.chart-table td { border: 1px solid var(--taupe); padding: 0; }
.chart-table .cell-empty { color: var(--cell-empty); text-align: center; }

button.cell {
  font: inherit;
  display: block;
  width: 100%;
  min-width: 3.1rem;
  padding: 0.42rem 0.3rem;
  background: none;
  border: none;
  color: var(--ink);
  cursor: pointer;
}
button.cell:hover { background: var(--hover-bg); color: var(--cinnabar); }
button.cell.chip { width: auto; border: 1px solid var(--taupe); border-radius: 999px; padding: 0.25rem 0.7rem; }

.specials { margin-top: 1rem; }
.chip-row { display: flex; flex-wrap: wrap; gap: 0.45rem; }

/* drawer */
.drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(430px, 100vw);
  background: var(--paper);
  border-left: 1px solid var(--taupe);
  box-shadow: -8px 0 28px rgba(34, 34, 34, 0.12);
  padding: 1.4rem 1.6rem;
  overflow-y: auto;
  z-index: 40;
}
.drawer[hidden] { display: none; }
.drawer-head { display: flex; justify-content: space-between; align-items: baseline; }
.drawer-head h2 { font-family: var(--serif); font-size: 1.9rem; margin: 0; }

.char-row {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  padding: 0.6rem 0;
  border-top: 1px solid var(--taupe);
}
button.hanzi-btn {
  font-family: var(--serif);
  font-size: 1.7rem;
  line-height: 1;
  width: 2.6rem; height: 2.6rem;
  background: var(--paper);
  border: 1px solid var(--taupe);
  border-radius: 4px;
  cursor: pointer;
  color: var(--ink);
}
button.hanzi-btn:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.char-meta { flex: 1; display: flex; flex-direction: column; gap: 0.1rem; }
.char-meta .def { font-size: 0.85rem; color: var(--ink); }

.marks { color: var(--cinnabar); letter-spacing: 0.02em; }
.trad { color: var(--dust); margin-left: 0.4rem; }

.spk {
  background: none;
  border: none;
  font-size: 1.05rem;
  cursor: pointer;
  opacity: 0.55;
}
.spk:hover { opacity: 1; }

.voice-note { font-size: 0.8rem; color: var(--dust); font-style: italic; }

/* modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(24, 22, 20, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 50;
}
.modal-overlay[hidden] { display: none; }
.modal {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--taupe);
  border-radius: 6px;
  padding: 1.5rem 1.6rem 1.6rem;
  width: min(420px, 100%);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-close {
  position: absolute;
  top: 0.5rem; right: 0.8rem;
  background: none; border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--dust);
  cursor: pointer;
}
.modal-close:hover { color: var(--cinnabar); }
.modal-head { display: flex; align-items: baseline; gap: 0.8rem; margin-bottom: 0.4rem; }
.modal-char { font-family: var(--serif); font-size: 1.8rem; }
.modal-info { font-size: 0.82rem; color: var(--dust); }
.writer-box { display: flex; justify-content: center; margin: 0.4rem 0 0.8rem; }
.writer-box svg { max-width: 230px; }
.modal-actions { display: flex; gap: 0.5rem; justify-content: center; margin-bottom: 1rem; }
.modal-extra { border-top: 1px solid var(--taupe); padding-top: 0.8rem; }
.modal-extra p { margin: 0.25rem 0; }
.gloss-line .marks { margin-right: 0.4rem; }

button.word-chip {
  font: inherit;
  font-size: 0.82rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.05rem;
  border: 1px solid var(--taupe);
  border-radius: 4px;
  background: var(--paper);
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  color: var(--ink);
}
button.word-chip:hover { border-color: var(--cinnabar); }
button.word-chip b { font-family: var(--serif); font-weight: 400; font-size: 1.05rem; }
button.word-chip em { font-style: normal; color: var(--dust); font-size: 0.75rem; }

/* dictionary */
.search-row { display: flex; gap: 0.6rem; align-items: center; margin-bottom: 1.5rem; }
.search-row input[type="search"] {
  font: inherit;
  flex: 1;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--taupe);
  border-radius: 3px;
  background: var(--paper);
  color: var(--ink);
}
.search-row input[type="search"]:focus { outline: 2px solid var(--cinnabar); outline-offset: 1px; border-color: var(--cinnabar); }

.dict-card { padding: 1rem 0; border-bottom: 1px solid var(--taupe); }
.dc-main { display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; align-items: baseline; }
.dc-word { font-family: var(--serif); font-size: 1.55rem; line-height: 1.2; }
button.hc {
  font: inherit;
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  cursor: pointer;
}
button.hc:hover { color: var(--cinnabar); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.dc-py { display: flex; align-items: baseline; gap: 0.4rem; font-size: 1rem; }
.dc-badges { width: 100%; display: flex; gap: 0.4rem; flex-wrap: wrap; }
.badge {
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--dust);
  border: 1px solid var(--dust);
  border-radius: 999px;
  padding: 0.05rem 0.55rem;
}
.dc-defs { margin: 0.4rem 0 0; padding-left: 1.3rem; font-size: 0.93rem; color: var(--ink); }
.dc-defs li { margin: 0.1rem 0; }

/* hsk */
.level-tabs { display: flex; flex-wrap: wrap; gap: 1.4rem; margin-bottom: 1.5rem; }
.tab-group { display: flex; align-items: center; gap: 0.35rem; }
.tab-label { font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dust); margin-right: 0.3rem; }
button.lvl-chip {
  font: inherit;
  font-size: 0.85rem;
  width: 2rem; height: 2rem;
  border: 1px solid var(--taupe);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  color: var(--ink);
}
button.lvl-chip:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
button.lvl-chip.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.hsk-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 0.8rem; }
.hsk-card {
  border: 1px solid var(--taupe);
  border-radius: 4px;
  padding: 0.7rem 0.85rem;
  background: var(--paper);
}
.hsk-card:hover { border-color: var(--dust); }
.hc-word { font-family: var(--serif); font-size: 1.3rem; }
.hc-py { font-size: 0.88rem; display: flex; align-items: baseline; gap: 0.35rem; }
.hc-def { font-size: 0.78rem; color: var(--taupe); margin-top: 0.25rem; }

.list-foot { display: flex; align-items: baseline; gap: 1rem; margin: 1.5rem 0 2rem; }

/* tool footer */
.tool-foot {
  max-width: 76rem;
  margin: 4rem auto 0;
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--taupe);
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2rem;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--dust);
}
.tool-foot a { color: var(--dust); }
.tool-foot a:hover { color: var(--cinnabar); }

/* landing tool cards */
.tool-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin: 1.5rem 0 1rem; }
.tool-card {
  border: 1px solid var(--taupe);
  border-radius: 4px;
  padding: 1.2rem 1.3rem;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
}
.tool-card:hover { border-color: var(--cinnabar); }
.tool-card h3 { font-family: var(--serif); font-weight: 400; font-size: 1.15rem; margin: 0 0 0.4rem; }
.tool-card p { font-size: 0.88rem; color: var(--ink); margin: 0; }
.beta-note { font-size: 0.8rem; color: var(--dust); font-style: italic; }

@media (max-width: 700px) {
  .drawer { width: 100vw; border-left: none; }
  .hsk-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
}

/* ============ P0 shell + redesign (see hanivio-product-plan.md) ============ */

/* tone colors — redundant with tone marks (principle P6) */
.py { font-style: normal; }
.py.t1 { color: var(--cinnabar); }
.py.t2 { color: var(--tone2); }
.py.t3 { color: var(--tone3); }
.py.t4 { color: var(--ink); }
.py.t5 { color: var(--dust); }
html.tone-plain .py.t1, html.tone-plain .py.t2, html.tone-plain .py.t3, html.tone-plain .py.t4 { color: var(--ink); }

/* app shell */
.shell {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  max-width: 76rem;
  margin: 0 auto;
  padding: 0.85rem 2rem;
  border-bottom: 1px solid var(--taupe);
  position: sticky;
  top: 0;
  background: var(--paper);
  z-index: 30;
}

.shell .wordmark { font-size: 1.35rem; }

.mini-search { position: relative; flex: 1; max-width: 330px; }

.mini-search input {
  width: 100%;
  font: inherit;
  font-size: 0.9rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--taupe);
  border-radius: 3px;
  background: var(--paper);
  color: var(--ink);
}

.mini-search input:focus { outline: 2px solid var(--cinnabar); border-color: var(--cinnabar); outline-offset: 0; }

.suggest {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--paper);
  border: 1px solid var(--taupe);
  border-radius: 4px;
  box-shadow: 0 8px 24px rgba(34, 34, 34, 0.08);
  z-index: 60;
  display: flex;
  flex-direction: column;
}
.suggest[hidden] { display: none; }

button.sg {
  display: grid;
  grid-template-columns: minmax(64px, auto) auto 1fr;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.5rem 0.8rem;
  border: none;
  border-bottom: 1px solid var(--taupe);
  background: none;
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: var(--ink);
}
button.sg:last-child { border-bottom: none; }
.sg.on, .sg:hover { background: var(--hover-bg); }
.sg-w { font-family: var(--serif); font-size: 1.1rem; }
.sg-w i { color: var(--dust); font-size: 0.85rem; font-style: normal; }
.sg-py { font-size: 0.85rem; }
.sg-g { font-size: 0.8rem; color: var(--dust); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.shell-nav { display: flex; gap: 1.1rem; align-items: baseline; }
.shell-nav a { color: var(--ink); text-decoration: none; font-size: 0.85rem; letter-spacing: 0.04em; }
.shell-nav a:hover { color: var(--cinnabar); }
body[data-page="learn"] .shell-nav a[href="/learn/"],
body[data-page="pinyin"] .shell-nav a[href="/pinyin/"],
body[data-page="dict"] .shell-nav a[href="/dict/"],
body[data-page="hsk"] .shell-nav a[href="/hsk/"],
body[data-page="saved"] .shell-nav a[href="/saved/"],
.shell-nav a.active { color: var(--cinnabar); border-bottom: 1px solid var(--cinnabar); }

.shell-actions { display: flex; gap: 0.6rem; align-items: center; margin-left: auto; }

.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--taupe);
  border-radius: 3px;
  font-size: 1rem;
  padding: 0.3rem 0.5rem;
  cursor: pointer;
  color: var(--ink);
}

.prefs-btn {
  font: inherit;
  font-size: 0.95rem;
  width: 1.7rem; height: 1.7rem;
  border-radius: 50%;
  border: 1px solid var(--taupe);
  background: none;
  cursor: pointer;
  color: var(--dust);
  line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
}
.prefs-btn:hover { border-color: var(--cinnabar); color: var(--cinnabar); }

@media (max-width: 900px) {
  .shell { flex-wrap: wrap; gap: 0.75rem; padding: 0.8rem 1.25rem; }
  .shell-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--taupe);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0.8rem;
    z-index: 29;
  }
  body.nav-open .shell-nav { display: flex; }
  .menu-btn { display: inline-block; }
  .mini-search { max-width: none; order: 5; flex-basis: 100%; }
  .tool-main { padding-left: 1.25rem; padding-right: 1.25rem; }
}

/* help popover + coach marks */
.prefs-pop {
  position: absolute;
  width: 280px;
  background: var(--paper);
  border: 1px solid var(--taupe);
  border-radius: 6px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  z-index: 70;
  font-size: 0.85rem;
  box-shadow: 0 8px 24px rgba(34, 34, 34, 0.12);
}
.prefs-pop[hidden] { display: none; }
.prefs-section { display: flex; flex-direction: column; gap: 0.4rem; }
.prefs-label { font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--dust); }
.seg { display: flex; border: 1px solid var(--taupe); border-radius: 5px; overflow: hidden; }
.seg button {
  flex: 1; font: inherit; font-size: 0.8rem; padding: 0.35rem 0.4rem;
  border: none; border-right: 1px solid var(--taupe); background: none;
  color: var(--ink); cursor: pointer; white-space: nowrap;
}
.seg button:last-child { border-right: none; }
.seg button:hover { background: var(--hover-bg); }
.seg button.on { background: var(--cinnabar); color: #fff; }
.prefs-check { display: flex; gap: 0.5rem; align-items: center; cursor: pointer; }
.prefs-reset { font: inherit; font-size: 0.82rem; border: 1px solid var(--taupe); background: none; border-radius: 3px; padding: 0.3rem 0.6rem; cursor: pointer; color: var(--ink); text-align: left; }
.prefs-reset:hover { border-color: var(--cinnabar); color: var(--cinnabar); }

.coach {
  position: absolute;
  max-width: 262px;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.8rem;
  line-height: 1.45;
  padding: 0.55rem 0.7rem;
  border-radius: 4px;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  z-index: 65;
}
.coach::before { content: ""; position: absolute; top: -6px; left: 16px; border: 6px solid transparent; border-bottom-color: var(--ink); border-top: 0; }
.coach button { background: none; border: none; color: var(--taupe); cursor: pointer; font-size: 1.05rem; line-height: 1; }
.coach button:hover { color: var(--paper); }

/* buttons */
.btn.primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.primary:hover { background: var(--cinnabar); border-color: var(--cinnabar); color: #fff; }

/* entry anatomy (research §dictionaries) */
.entry { padding: 1.05rem 0; border-bottom: 1px solid var(--taupe); }
.e-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.35rem 0.9rem; }
.e-word { margin: 0; font-family: var(--serif); font-weight: 400; font-size: 1.7rem; line-height: 1.25; color: var(--ink); }
.entry--compact .e-word { font-size: 1.3rem; }
.e-trad { color: var(--dust); font-family: var(--serif); font-size: 1.2rem; }
.entry--compact .e-trad { font-size: 1rem; }
.e-py { display: flex; align-items: center; gap: 0.45rem; font-size: 1.05rem; }
.entry--compact .e-py { font-size: 0.92rem; }
.e-badges { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.e-defs { margin: 0.4rem 0 0; padding-left: 1.35rem; color: var(--ink); font-size: 0.93rem; }
.entry--compact .e-defs { list-style: none; padding: 0; font-size: 0.82rem; color: var(--taupe); display: flex; flex-wrap: wrap; gap: 0.15rem 1.1rem; margin: 0.2rem 0 0; }

button.star { background: none; border: none; cursor: pointer; font-size: 1.1rem; color: var(--taupe); padding: 0 0.1rem; }
button.star:hover { color: var(--cinnabar); }
button.star.on { color: var(--cinnabar); }
.badge-quiet { color: var(--taupe); border-color: var(--taupe); }

/* dictionary page */
.search-hero { position: relative; margin-bottom: 0.5rem; }
.search-hero input {
  width: 100%;
  font: inherit;
  font-size: 1.15rem;
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--taupe);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
}
.search-hero input:focus { outline: 2px solid var(--cinnabar); border-color: var(--cinnabar); outline-offset: 0; }
.chip-line { display: flex; gap: 0.5rem; align-items: center; font-size: 0.85rem; color: var(--dust); margin: 0.6rem 0 1rem; flex-wrap: wrap; }
.try-chip { font: inherit; font-size: 0.85rem; border: 1px solid var(--taupe); background: none; border-radius: 999px; padding: 0.15rem 0.75rem; cursor: pointer; color: var(--ink); }
.try-chip:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.about-line { font-size: 0.78rem; color: var(--dust); margin: 0 0 1.2rem; }
.about-line a { color: var(--dust); }

/* pinyin page */
.py-what { border: 1px solid var(--taupe); border-radius: 6px; background: var(--paper); padding: 1.1rem 1.4rem; margin: 0 0 1.6rem; }
.py-what h2 { font-family: var(--serif); font-weight: 400; font-size: 1.15rem; margin: 0 0 0.35rem; }
.py-what p { margin: 0; font-size: 0.92rem; }
.ma-demo { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.7rem 0 0.2rem; }
.ma-demo button { font: inherit; border: 1px solid var(--taupe); border-radius: 4px; background: var(--paper); padding: 0.32rem 0.75rem; cursor: pointer; color: var(--ink); }
.ma-demo button:hover { border-color: var(--cinnabar); }
.ma-demo .all { border-color: var(--ink); }
.learn-link { display: inline-block; margin-top: 0.4rem; font-size: 0.88rem; color: var(--cinnabar); text-decoration: none; }
.learn-link:hover { text-decoration: underline; }
.py-controls { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin: 0 0 1rem; }
.py-controls .tone-bar { margin: 0; }
.tone-label { font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--dust); }
.switch { display: flex; align-items: center; gap: 0.45rem; font-size: 0.85rem; cursor: pointer; color: var(--dust); }

.tone-chip.t1 { color: var(--cinnabar); }
.tone-chip.t2 { color: var(--tone2); }
.tone-chip.t3 { color: var(--tone3); }
.tone-chip.t4 { color: var(--ink); }
.tone-chip.t5 { color: var(--dust); }
.tone-chip.t1.active { background: var(--cinnabar); border-color: var(--cinnabar); color: #fff; }
.tone-chip.t2.active { background: var(--tone2); border-color: var(--tone2); color: #fff; }
.tone-chip.t3.active { background: var(--tone3); border-color: var(--tone3); color: #fff; }
.tone-chip.t4.active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.tone-chip.t5.active { background: var(--dust); border-color: var(--dust); color: #fff; }

.chart-table .corner { left: 0; top: 0; z-index: 4; background: var(--paper); }

button.cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.05rem;
  padding: 0.34rem 0.2rem;
  font-size: 0.78rem;
}
button.cell small { font-family: var(--serif); font-size: 0.95rem; line-height: 1.15; color: #8a8578; }
button.cell:hover small { color: var(--dust); }
button.cell.rare { opacity: 0.32; }
button.cell .py { font-size: 0.78rem; }
.specials-row { display: flex; gap: 0.45rem; align-items: center; margin-top: 0.8rem; flex-wrap: wrap; }
.legend { margin-top: 0.9rem; font-size: 0.78rem; }

/* HSK page */
.list-select { display: flex; gap: 0.6rem; margin-bottom: 1.4rem; flex-wrap: wrap; }
.list-chip { font: inherit; font-size: 0.9rem; padding: 0.4rem 1.1rem; border: 1px solid var(--taupe); border-radius: 999px; background: none; cursor: pointer; color: var(--ink); }
.list-chip.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.level-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(185px, 1fr)); gap: 1rem; }
.level-card { border: 1px solid var(--taupe); border-radius: 6px; padding: 1.2rem; background: var(--paper); display: flex; flex-direction: column; gap: 0.7rem; }
.lv-num { font-family: var(--serif); font-size: 2.6rem; line-height: 1; }
.lv-total { color: var(--dust); font-size: 0.85rem; }
.lv-actions { display: flex; gap: 0.5rem; }

.browse-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 0.4rem; flex-wrap: wrap; }
.browse-head h2 { margin: 0; font-family: var(--serif); font-weight: 400; font-size: 1.4rem; flex: 1; }
.browse-list { margin-top: 0.5rem; }

/* practice modal */
.practice-modal { width: min(440px, 100%); text-align: center; }
.practice-word { font-family: var(--serif); font-size: 3rem; margin: 1.3rem 0 0.4rem; line-height: 1.2; }
.practice-word.small { font-size: 2rem; margin-bottom: 0.2rem; }
.practice-py { font-size: 1.2rem; margin-bottom: 0.3rem; }
.practice-def { color: var(--ink); font-size: 0.95rem; min-height: 2.6em; }
.practice-actions { display: flex; gap: 0.7rem; justify-content: center; align-items: center; margin: 1rem 0 0.6rem; }
.btn.again { border-color: var(--cinnabar); color: var(--cinnabar); }
.btn.again:hover { background: var(--cinnabar); color: #fff; }
.btn.good { border-color: var(--tone2); color: var(--tone2); }
.btn.good:hover { background: var(--tone2); color: #fff; }
.practice-done { font-family: var(--serif); margin: 1.4rem 0 0.2rem; }
.practice-done.big { font-size: 1.5rem; margin-bottom: 1rem; }
.practice-progress { min-height: 1.4em; font-size: 0.78rem; }

/* learn page */
.learn-progress { display: flex; align-items: center; gap: 0.5rem; margin: 0 0 1.5rem; }
.dot { width: 1.9rem; height: 1.9rem; border-radius: 50%; border: 1px solid var(--taupe); display: flex; align-items: center; justify-content: center; font-size: 0.8rem; color: var(--dust); text-decoration: none; }
.dot.done { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.dot-sep { width: 1.6rem; height: 1px; background: var(--taupe); }

.learn-unit { padding: 1.6rem 0 2rem; border-top: 1px solid var(--taupe); }
.learn-unit h2 { font-family: var(--serif); font-weight: 400; font-size: 1.45rem; margin: 0 0 0.9rem; }
.learn-unit > p { margin: 0 0 1rem; }
.lu-num { color: var(--dust); font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase; }

.tone-cards { display: flex; gap: 0.8rem; flex-wrap: wrap; margin: 1rem 0; }
button.tc { font: inherit; display: flex; flex-direction: column; align-items: center; gap: 0.1rem; border: 1px solid var(--taupe); border-radius: 6px; padding: 0.8rem 1.1rem; background: var(--paper); cursor: pointer; color: var(--ink); min-width: 88px; }
button.tc:hover { border-color: var(--cinnabar); }
.tc-han { font-family: var(--serif); font-size: 1.9rem; line-height: 1.1; }
.tc-py { font-size: 1.02rem; }
.tc.t1 .tc-py { color: var(--cinnabar); }
.tc.t2 .tc-py { color: var(--tone2); }
.tc.t3 .tc-py { color: var(--tone3); }
.tc.t4 .tc-py { color: var(--ink); }
.tc-g { font-size: 0.75rem; color: var(--dust); }
.tc.all { justify-content: center; color: var(--dust); font-size: 0.9rem; }

.contours { width: 100%; max-width: 480px; height: 80px; margin: 0.2rem 0 1rem; }
.contours path { fill: none; stroke-width: 3.5; stroke-linecap: round; }
.contours .c1 { stroke: var(--cinnabar); }
.contours .c2 { stroke: #2E7D4F; }
.contours .c3 { stroke: #2B5FA8; }
.contours .c4 { stroke: var(--ink); }

.pairs-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); gap: 0.8rem; margin: 1rem 0; }
.pair-card { border: 1px solid var(--taupe); border-radius: 6px; padding: 0.7rem 0.9rem; background: var(--paper); display: flex; flex-direction: column; gap: 0.5rem; }
.pair-label { display: flex; align-items: center; gap: 0.4rem; font-size: 0.95rem; color: var(--dust); }
.pair-dash { color: var(--taupe); }
.pair-example { width: 100%; }

.chars-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.7rem; margin: 1rem 0; }
.char-card { position: relative; border: 1px solid var(--taupe); border-radius: 6px; padding: 0.6rem 0.75rem; background: var(--paper); }
.cc-rank { font-size: 0.7rem; color: var(--dust); }
.cc-char { font-family: var(--serif); font-size: 1.5rem; background: none; border: none; cursor: pointer; color: var(--ink); padding: 0; }
.cc-char:hover { color: var(--cinnabar); }
.cc-py { font-size: 0.85rem; float: right; margin-top: -2.1rem; }
.cc-gloss { display: block; font-size: 0.75rem; color: var(--taupe); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 0.15rem; padding-right: 1.2rem; }
.cc-star { position: absolute; bottom: 0.45rem; right: 0.5rem; font-size: 0.9rem; }
.u4-actions { display: flex; gap: 0.7rem; align-items: center; margin-top: 1rem; }
.done-btn.is-done { border-color: var(--tone2); color: var(--tone2); }
.learn-next { margin-top: 1.5rem; color: var(--dust); }
.learn-next a { color: var(--ink); }

/* modal char structure */
.char-meta-row { font-size: 0.8rem; }
.comp-row { display: flex; align-items: center; gap: 0.4rem; margin: 0.5rem 0; font-family: var(--serif); font-size: 1.3rem; }
button.comp { font: inherit; background: var(--paper); border: 1px solid var(--taupe); border-radius: 4px; padding: 0.05rem 0.5rem; cursor: pointer; color: var(--ink); }
button.comp:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.comp-plus { color: var(--dust); font-size: 1rem; }
.py-line { display: inline; }
.modal-star { margin-left: auto; }

/* saved page */
.saved-row { display: flex; gap: 1rem; align-items: baseline; padding: 0.7rem 0; border-bottom: 1px solid var(--taupe); }
.sv-main { display: flex; gap: 0.6rem; align-items: baseline; flex: 1; flex-wrap: wrap; }
.sv-word { font-family: var(--serif); font-size: 1.35rem; }
.sv-py { font-size: 0.9rem; }
.sv-gloss { font-size: 0.8rem; color: var(--taupe); max-width: 32ch; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sv-actions { display: flex; gap: 0.5rem; align-items: center; }
button.row-del { background: none; border: none; color: var(--dust); font-size: 1.25rem; cursor: pointer; line-height: 1; }
button.row-del:hover { color: var(--cinnabar); }
.saved-stats { font-size: 0.9rem; color: var(--dust); }

/* print: the chart is the product */
@media print {
  .shell, .drawer, .tool-foot, .py-what, .py-controls, #specials, .legend, .note, .voice-note, .coach, .prefs-pop { display: none !important; }
  body { background: #fff; }
  .chart-wrap { border: none; overflow: visible; }
  .chart-table { font-size: 8pt; }
  button.cell { padding: 1px; }
  button.cell .py, .chart-table td, .chart-table th { color: #000 !important; }
}

/* ============ round 2: native audio + review + interactions ============ */

/* due badge in nav */
.due-badge {
  font-style: normal;
  font-size: 0.68rem;
  line-height: 1.5;
  min-width: 1.4rem;
  padding: 0 0.3rem;
  border-radius: 999px;
  background: var(--cinnabar);
  color: #fff;
  text-align: center;
  display: inline-block;
}
body[data-page="review"] .shell-nav a[href="/review/"] { color: var(--cinnabar); border-bottom: 1px solid var(--cinnabar); }

/* chart: crosshair hover + clickable initials/finals */
.chart-table td.hl { background: var(--hover-bg-light); }
.chart-table th.hl { color: var(--cinnabar); }
.chart-table th.playable { cursor: pointer; }
.chart-table th.playable:hover { color: var(--cinnabar); }
.chart-table th.ping { color: var(--cinnabar); animation: ping 0.6s ease; }
@keyframes ping { 0% { transform: scale(1); } 35% { transform: scale(1.25); } 100% { transform: scale(1); } }

button.cell:active { transform: scale(0.93); }
.spk:active { transform: scale(0.85); }
.tone-chip:active { transform: scale(0.95); }

/* drawer + modal motion (respect reduced motion) */
.drawer { transform: translateX(40px); opacity: 0; transition: transform 0.22s ease, opacity 0.22s ease; }
.drawer.in { transform: none; opacity: 1; }
.modal-overlay .modal { transform: scale(0.96) translateY(6px); opacity: 0; transition: transform 0.18s ease, opacity 0.18s ease; }
.modal-overlay.in .modal { transform: none; opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .drawer, .modal-overlay .modal { transition: none; transform: none; opacity: 1; }
  .chart-table th.ping { animation: none; }
  html { scroll-behavior: auto; }
}

:focus-visible { outline: 2px solid var(--cinnabar); outline-offset: 2px; }

/* learn: proper character cards (replaces the cramped layout) */
.chars-grid { grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); }
.char-card { display: flex; flex-direction: column; gap: 0.35rem; padding: 0.8rem 0.95rem 0.9rem; min-height: 118px; }
.cc-head { display: flex; justify-content: space-between; align-items: center; }
.cc-rank { font-size: 0.72rem; color: var(--dust); font-variant-numeric: tabular-nums; }
.cc-star { position: static; font-size: 1.05rem; }
.cc-main { display: flex; align-items: baseline; gap: 0.6rem; }
.cc-char { font-size: 1.7rem; line-height: 1.15; }
.cc-py { float: none; margin: 0; font-size: 0.95rem; }
.cc-gloss { padding: 0; white-space: normal; font-size: 0.78rem; line-height: 1.35; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* review session */
.rv-progress { font-size: 0.85rem; color: var(--dust); margin: 0 0 1rem; }
.rv-card { border: 1px solid var(--taupe); border-radius: 8px; background: var(--paper); padding: 2.2rem 1.5rem 1.8rem; text-align: center; min-height: 210px; }
.rv-word .rv-han { font-family: var(--serif); font-size: 3.4rem; line-height: 1.2; margin: 0 0.15em; }
.rv-back { margin-top: 0.9rem; }
.rv-py { font-size: 1.25rem; }
.rv-trad { color: var(--dust); font-family: var(--serif); font-size: 1.1rem; margin-top: 0.1rem; }
.rv-gloss { color: var(--ink); margin-top: 0.45rem; min-height: 1.6em; }
.rv-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; align-items: center; margin: 1.1rem 0 0.5rem; }
button.grade { min-width: 96px; }
button.grade em { font-style: normal; color: var(--dust); font-size: 0.75rem; margin-left: 0.35rem; }
button.grade.again { border-color: var(--cinnabar); color: var(--cinnabar); }
button.grade.again:hover { background: var(--cinnabar); color: #fff; }
button.grade.hard { border-color: var(--grade-hard); color: var(--grade-hard-text); }
button.grade.hard:hover { background: var(--grade-hard); border-color: var(--grade-hard); color: #fff; }
button.grade.good { border-color: var(--tone2); color: var(--tone2); }
button.grade.good:hover { background: var(--tone2); color: #fff; }
button.grade.easy { border-color: var(--tone3); color: var(--tone3); }
button.grade.easy:hover { background: var(--tone3); color: #fff; }
.rv-note, .rv-summary { text-align: center; }
.saved-empty { border: 1px solid var(--taupe); border-radius: 8px; background: var(--paper); padding: 2rem 2.2rem; margin: 1rem 0; }
.saved-empty h2 { font-family: var(--serif); font-weight: 400; font-size: 1.5rem; margin: 0 0 0.5rem; }
.saved-empty .cta-row { margin-top: 1.2rem; }

/* keyboard hint on review buttons */
.rv-actions .btn::after { content: ""; }
.kbd-hint { margin-top: 0.4rem; font-size: 0.75rem; color: var(--taupe); }

/* ============ round 3: HSK card sections, examples, trainer ============ */

/* hsk all-levels */
.level-jump, .level-jump { display: flex; gap: 0.45rem; margin: 0 0 1.6rem; flex-wrap: wrap; }
.jump-chip {
  font-size: 0.85rem;
  min-width: 2rem;
  text-align: center;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--taupe);
  border-radius: 999px;
  color: var(--ink);
  text-decoration: none;
}
.jump-chip:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.hsk-level { margin: 0 0 2.2rem; scroll-margin-top: 86px; }
.lv-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--taupe);
  margin-bottom: 1rem;
  position: sticky;
  top: 57px;
  background: var(--paper);
  z-index: 20;
}
.lv-head h2 { font-family: var(--serif); font-weight: 400; font-size: 1.3rem; margin: 0; flex: 1; min-width: 160px; }
.lv-head .lv-n { color: var(--cinnabar); }
.word-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(172px, 1fr)); gap: 0.8rem; }
article.entry.wcard {
  border: 1px solid var(--taupe);
  border-bottom: 1px solid var(--taupe);
  border-radius: 6px;
  background: var(--paper);
  padding: 0.8rem 0.95rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.wcard:hover { border-color: var(--dust); }
.wcard .e-top { display: none; }
.wc-word {
  font-family: var(--serif);
  font-size: 1.55rem;
  line-height: 1.25;
  color: var(--ink);
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  text-align: left;
  cursor: pointer;
  width: 100%;
}
.wc-trad { color: var(--dust); font-size: 0.85rem; }
.wc-py { display: flex; align-items: center; gap: 0.4rem; font-size: 0.95rem; color: var(--ink); }
.wc-py .star { margin-left: auto; font-size: 1rem; }
.wc-def { font-size: 0.78rem; color: var(--taupe); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.wcard.skel { height: 96px; background: linear-gradient(90deg, var(--skeleton-bg1) 25%, var(--skeleton-bg2) 45%, var(--skeleton-bg1) 65%); background-size: 300% 100%; animation: skel 1.3s linear infinite; border: none; }
@keyframes skel { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }
.lv-more { margin-top: 0.9rem; text-align: center; }

/* example sentences */
.e-ex { display: flex; gap: 0.7rem; align-items: flex-start; margin: 0.55rem 0 0; padding: 0.55rem 0.75rem; background: var(--paper); border-left: 2px solid var(--dust); border-radius: 0 4px 4px 0; }
.ex-cmn { font-family: var(--serif); font-size: 1.08rem; }
.ex-eng { font-size: 0.82rem; color: var(--dust); margin-top: 0.1rem; }
.sv-ex { font-size: 0.8rem; color: var(--dust); margin-top: 0.1rem; }
.rv-ex { display: flex; gap: 0.6rem; align-items: flex-start; justify-content: center; margin-top: 0.9rem; }
.rv-ex .ex-cmn { font-size: 1.2rem; }

/* tone trainer */
body[data-page="practice"] .mini-search { max-width: 260px; }
.mode-tabs { display: flex; gap: 0.6rem; margin-bottom: 1.5rem; }
.pairs-grid.wide { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.pair-words { display: flex; flex-direction: column; gap: 0.45rem; }
.pair-count { font-size: 0.75rem; margin-left: auto; }
.pair-label { align-items: center; }
.drill-box { border: 1px solid var(--taupe); border-radius: 8px; background: var(--paper); padding: 1.8rem 1.6rem; text-align: center; }
.drill-q { font-family: var(--serif); font-size: 1.25rem; margin: 0 0 1.2rem; }
.drill-play { display: flex; gap: 0.7rem; justify-content: center; align-items: center; margin-bottom: 1.4rem; }
.btn.big { font-size: 1.3rem; padding: 0.6rem 1.8rem; border-radius: 999px; }
.drill-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 0.7rem; max-width: 420px; margin: 0 auto; }
button.choice {
  font: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.8rem 0.5rem;
  border: 1px solid var(--taupe);
  border-radius: 6px;
  background: var(--paper);
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--ink);
}
button.choice:hover { border-color: var(--cinnabar); }
button.choice.ok { border-color: var(--tone2); background: var(--grade-ok-bg); }
button.choice.no { border-color: var(--cinnabar); background: var(--hover-bg-cinnabar); }
.drill-status { margin: 1rem 0 0; font-variant-numeric: tabular-nums; }
@media (prefers-reduced-motion: reduce) { .wcard.skel { animation: none; } }

/* ============ reader + sentence library ============ */

#paste-in {
  width: 100%;
  font: inherit;
  font-size: 1.05rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--taupe);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  resize: vertical;
}
#paste-in:focus { outline: 2px solid var(--cinnabar); outline-offset: 0; }
.paste-bar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin: 0.7rem 0 0.4rem; }

.rd-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 0.9rem; margin: 0 0 1.2rem; }
.known-chip { font-size: 0.82rem; color: var(--dust); }
#known-reset { margin-left: auto; }

.rd-text {
  font-family: var(--serif);
  font-size: 1.7rem;
  line-height: 2.05;
  background: var(--paper);
  border: 1px solid var(--taupe);
  border-radius: 8px;
  padding: 1.6rem 1.8rem;
}
button.tok {
  font: inherit;
  background: none;
  border: none;
  padding: 0 0.05rem;
  cursor: pointer;
  color: var(--ink);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  vertical-align: baseline;
  line-height: 1.25;
}
.tok .tk-py {
  display: none;
  font-family: var(--sans);
  font-size: 0.62rem;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--dust);
}
.pinyin-on .tok .tk-py { display: block; }
.pinyin-on .rd-text, .pinyin-on .lib-sent { line-height: 2.7; }
button.tok:hover .tk-han { color: var(--cinnabar); }
.tok.st-saved .tk-han { border-bottom: 2px solid var(--cinnabar); }
.tok.st-known .tk-han { color: var(--known-muted); }
.tok-plain { font-family: var(--sans); font-size: 0.9em; color: var(--dust); }

.rd-pop {
  position: fixed;
  width: 300px;
  background: var(--paper);
  border: 1px solid var(--taupe);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(34, 34, 34, 0.14);
  padding: 1rem 1.1rem;
  z-index: 80;
}
.pop-head { display: flex; align-items: baseline; gap: 0.6rem; }
.pop-word { font-family: var(--serif); font-size: 1.7rem; color: var(--ink); }
.pop-trad { color: var(--dust); }
.pop-py { margin: 0.15rem 0 0.45rem; }
.pop-defs { font-size: 0.85rem; color: var(--ink); margin-bottom: 0.75rem; }
.pop-defs div { margin: 0.1rem 0; }
.pop-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.pop-actions .btn { padding: 0.3rem 0.7rem; }
.pop-actions .btn.ok { border-color: var(--cinnabar); color: var(--cinnabar); }

.lib-bar { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; margin-bottom: 1.2rem; }
.lib-card { border: 1px solid var(--taupe); border-radius: 8px; background: var(--paper); padding: 1.1rem 1.3rem 1rem; margin-bottom: 0.9rem; }
.lib-card.skel { height: 84px; border: none; background: linear-gradient(90deg, var(--skeleton-bg1) 25%, var(--skeleton-bg2) 45%, var(--skeleton-bg1) 65%); background-size: 300% 100%; animation: skel 1.3s linear infinite; }
.lib-sent { font-family: var(--serif); font-size: 1.5rem; line-height: 2.35; }
.lib-bar-card { display: flex; gap: 0.6rem; align-items: center; margin-top: 0.35rem; }
.lib-bar-card .spk { font-size: 1.15rem; }
.trans-toggle { font-size: 0.78rem; color: var(--dust); }
.lib-trans { font-size: 0.88rem; margin-top: 0.5rem; }

body[data-page="read"] .shell-nav a[href="/read/"] { color: var(--cinnabar); border-bottom: 1px solid var(--cinnabar); }

@media (max-width: 700px) {
  .rd-text { font-size: 1.4rem; padding: 1.1rem 1.2rem; }
  .lib-sent { font-size: 1.3rem; }
  .rd-pop { width: min(300px, calc(100vw - 16px)); }
  #known-reset { margin-left: 0; }

  /* Stories mobile */
  .stories-list {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }
  .story-card {
    padding: 0.9rem;
  }
  .story-card h3 {
    font-size: 1.1rem;
  }
  .stories-filters {
    flex-direction: column;
    gap: 0.8rem;
  }
  .filter-group {
    width: 100%;
  }
  .filter-group select {
    width: 100%;
    padding: 0.6rem;
    font-size: 1rem;
  }
  .story-topics {
    gap: 0.4rem;
  }
  .topic-tag {
    font-size: 0.7rem;
    padding: 0.15rem 0.5rem;
  }

  /* Better touch targets */
  .tok {
    padding: 0.15rem 0.2rem;
    margin: 0 -0.1rem;
  }
  .btn {
    min-height: 44px;
    padding: 0.5rem 1rem;
  }
  .btn.small {
    min-height: 36px;
    padding: 0.4rem 0.8rem;
  }
  .spk {
    padding: 0.5rem;
    min-width: 44px;
    min-height: 44px;
  }
  .star {
    padding: 0.5rem;
    min-width: 44px;
    min-height: 44px;
  }
  .hc {
    padding: 0.3rem;
    min-width: 44px;
    min-height: 44px;
  }

  /* Mobile navigation improvements */
  .shell-nav a {
    font-size: 1rem;
    padding: 0.6rem 0;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  /* Reader mobile improvements */
  .rd-bar {
    flex-wrap: wrap;
    gap: 0.6rem;
  }
  .rd-bar .btn {
    font-size: 0.85rem;
  }
  #rd-stats, #known-chip {
    font-size: 0.8rem;
    width: 100%;
    text-align: center;
  }

  /* Story detail mobile */
  .story-header h2 {
    font-size: 1.5rem;
  }
  .story-footer {
    margin-top: 1.5rem;
    padding-top: 0.8rem;
  }
  .story-footer .switch {
    font-size: 0.9rem;
  }

  /* Library mobile */
  .lib-bar {
    flex-wrap: wrap;
    gap: 0.6rem;
  }
  .lib-bar .switch {
    font-size: 0.85rem;
  }

  /* Popover mobile positioning */
  .rd-pop {
    max-width: calc(100vw - 2rem);
    max-height: 60vh;
    overflow-y: auto;
  }
  .pop-word {
    font-size: 1.5rem;
  }
  .pop-defs {
    font-size: 0.9rem;
  }
  .pop-actions {
    flex-wrap: wrap;
  }
  .pop-actions .btn {
    flex: 1;
    min-width: 80px;
  }

  /* Chart mobile */
  .chart-table {
    font-size: 0.7rem;
  }
  .chart-table th {
    padding: 0.3rem;
  }
  .chart-table td {
    padding: 0.3rem;
  }

  /* Dictionary mobile */
  .entry {
    padding: 0.8rem 0;
  }
  .e-word {
    font-size: 1.6rem;
  }
  .e-py {
    font-size: 1rem;
  }
  .e-defs {
    font-size: 0.9rem;
  }

  /* HSK mobile */
  .level-cards {
    gap: 0.8rem;
  }
  .level-card {
    padding: 0.8rem;
  }

  /* Practice modal mobile */
  .practice-modal {
    width: calc(100vw - 2rem);
    max-width: 400px;
  }
  .practice-word {
    font-size: 2.5rem;
  }

  /* Learn mobile */
  .learn-units {
    gap: 0.8rem;
  }
  .learn-unit {
    padding: 0.9rem;
  }
  .learn-unit h3 {
    font-size: 1.1rem;
  }

  /* Saved mobile */
  .saved-entry {
    padding: 0.8rem;
  }
  .saved-word {
    font-size: 1.4rem;
  }

  /* Review mobile */
  .review-card {
    padding: 1.2rem;
  }
  .review-word {
    font-size: 3rem;
  }
  .review-actions {
    flex-direction: column;
    gap: 0.6rem;
  }
  .review-actions .btn {
    width: 100%;
  }
}

/* ============ stories ============ */
.stories-list {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.story-card {
  border: 1px solid var(--taupe);
  border-radius: 8px;
  padding: 1rem;
  cursor: pointer;
  transition: border-color 0.2s;
  background: var(--paper);
}

.story-card:hover {
  border-color: var(--cinnabar);
}

.story-card h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.2rem;
}

.story-card h3 .muted {
  font-size: 0.9rem;
  font-weight: normal;
}

.story-preview {
  margin: 0.5rem 0;
  line-height: 1.6;
}

.story-header {
  margin-bottom: 1.5rem;
}

.story-header h2 {
  margin: 0.5rem 0 0.2rem 0;
  font-size: 1.8rem;
}

.story-footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--taupe);
}

.story-footer .switch {
  margin-bottom: 0.5rem;
}

#story-trans {
  margin: 0.5rem 0 0 0;
  line-height: 1.8;
}

/* ============ stories filters ============ */
.stories-filters {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-group label {
  font-weight: 500;
  color: var(--text-secondary);
}

.filter-group select {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  font-size: 0.9rem;
}

.filter-group select:hover {
  border-color: var(--accent);
}

.filter-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(var(--accent-rgb), 0.1);
}

.story-topics {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.topic-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--bg-secondary);
  border-radius: 12px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: capitalize;
}

.topic-tag:hover {
  background: var(--accent-light);
  color: var(--accent);
}

/* Extra small screens (phones in portrait) */
@media (max-width: 480px) {
  body {
    font-size: 16px;
  }

  .tool-main {
    padding: 1rem;
  }

  .shell {
    padding: 0.6rem 1rem;
  }

  .wordmark {
    font-size: 1.3rem;
  }

  .rd-text {
    font-size: 1.3rem;
    padding: 1rem;
    line-height: 2;
  }

  .tok {
    font-size: 1.3rem;
  }

  .story-card h3 {
    font-size: 1rem;
  }

  .story-card h3 .muted {
    display: block;
    font-size: 0.8rem;
    margin-top: 0.2rem;
  }

  .filter-group {
    flex-direction: column;
    align-items: stretch;
    gap: 0.4rem;
  }

  .filter-group label {
    font-size: 0.9rem;
  }

  .filter-group select {
    font-size: 0.95rem;
  }

  .rd-pop {
    left: 1rem !important;
    right: 1rem !important;
    width: auto !important;
    max-width: none !important;
  }

  .pop-word {
    font-size: 1.3rem;
  }

  .pop-actions .btn {
    font-size: 0.85rem;
    padding: 0.4rem 0.6rem;
  }

  .practice-word {
    font-size: 2.2rem;
  }

  .review-word {
    font-size: 2.5rem;
  }

  .chart-table {
    font-size: 0.65rem;
  }

  .level-card {
    padding: 0.7rem;
  }

  .learn-unit h3 {
    font-size: 1rem;
  }
}

/* ============ reading progress ============ */
.read-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--cinnabar, #C5412D);
  color: white;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: 0.3rem;
  margin-right: 0.3rem;
}

.quiz-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--tone2);
  color: white;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: 0.3rem;
}

.story-card .read-badge,
.story-card .quiz-badge {
  margin-bottom: 0.5rem;
}

/* ============ story audio controls ============ */
.story-actions {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.story-actions .btn {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* ============ vocabulary list ============ */
#story-vocab-section {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--paper-light);
  border-radius: 8px;
  border: 1px solid var(--border);
}

#story-vocab-section h3 {
  margin-top: 0;
  margin-bottom: 1rem;
}

.vocab-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.vocab-card {
  background: var(--paper);
  padding: 1rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  transition: box-shadow 0.2s;
}

.vocab-card:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.vocab-word {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.vocab-char {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text);
}

.vocab-trad {
  font-size: 1rem;
  color: var(--text-muted);
}

.vocab-pinyin {
  font-size: 0.95rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.vocab-defs {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.vocab-save {
  width: 100%;
}

.vocab-save.saved {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.vocab-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

/* ============ quiz styles ============ */
#story-quiz-section {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--paper-light);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.quiz-header h3 {
  margin: 0;
}

.quiz-progress {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.9rem;
}

.quiz-score {
  font-weight: 600;
  color: var(--primary);
}

.quiz-content {
  min-height: 300px;
}

.quiz-question {
  margin-bottom: 1.5rem;
}

.quiz-question-text {
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

.quiz-question-text-en {
  font-size: 0.95rem;
  font-style: italic;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.quiz-option {
  padding: 1rem;
  border: 2px solid var(--border);
  border-radius: 6px;
  background: var(--paper);
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  transition: all 0.2s;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--primary);
  background: var(--paper);
}

.quiz-option:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.quiz-option.correct {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}

.quiz-option.incorrect {
  border-color: var(--cinnabar);
  background: var(--hover-bg-error);
  color: var(--cinnabar);
}

.quiz-feedback {
  margin-top: 1.5rem;
  padding: 1rem;
  border-radius: 6px;
  background: var(--paper);
  border: 1px solid var(--border);
}

.feedback-text {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feedback-text.correct {
  color: var(--primary);
}

.feedback-text.incorrect {
  color: var(--cinnabar);
}

.feedback-explanation {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.quiz-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
}

.quiz-results {
  text-align: center;
  padding: 2rem;
}

.quiz-results h4 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.quiz-score-display {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.score-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.score-percentage {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.quiz-message {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}


/* E1-12a report reader */
.rp-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.6rem; margin: 1rem 0 1.4rem; }
.rp-stat { border: 1px solid var(--line, #d8d2c4); border-radius: 4px; padding: 0.6rem 0.8rem; display: flex; flex-direction: column; gap: 0.15rem; }
.rp-stat b { font-size: 1.45rem; line-height: 1.1; }
.rp-stat span { font-size: 0.78rem; opacity: 0.75; }
.rp-list { margin: 0.3rem 0 1.2rem; }
.rp-row { margin: 0.25rem 0; }

/* E1-14 tone checker (F4) */
.tonec-overlay { position: fixed; inset: 0; background: rgba(20, 18, 14, 0.55); display: flex; align-items: center; justify-content: center; z-index: 90; padding: 1rem; }
.tonec-panel { background: var(--paper, #F7F4EE); color: var(--ink, #26221C); border-radius: 8px; max-width: 430px; width: 100%; max-height: 90vh; overflow: auto; padding: 1rem 1.1rem; box-shadow: 0 12px 40px rgba(0,0,0,0.3); }
[data-theme="dark"] .tonec-panel { background: #221F1A; color: #EDE8DF; }
.tonec-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.6rem; font-size: 1.1rem; }
.tonec-close { background: none; border: none; font-size: 1rem; cursor: pointer; color: inherit; padding: 0.2rem 0.4rem; }
.tonec-explain { margin: 0.3rem 0; }
.tonec-privacy { font-size: 0.8rem; }
.tonec-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.8rem 0 0.4rem; }
.tonec-actions button { cursor: pointer; }
.tonec-cal, .tonec-back { background: none; border: 1px solid var(--line, #d8d2c4); border-radius: 4px; padding: 0.45rem 0.7rem; color: inherit; }
.tonec-left { font-size: 0.8rem; }
.tonec-rec { font-weight: 600; }
.tonec-meter { height: 8px; border-radius: 4px; background: var(--line, #d8d2c4); overflow: hidden; margin: 0.5rem 0; }
.tonec-meter i { display: block; height: 100%; width: 0; background: var(--cinnabar, #C5412D); transition: width 60ms linear; }
.tonec-err { font-weight: 600; }
.tonec-err.ok { color: #2E7D4F; }
.tonec-syl { border-top: 1px solid var(--line, #d8d2c4); padding: 0.6rem 0; }
.tonec-sylhead { display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; }
.tonec-verdict { font-size: 0.8rem; font-weight: 600; padding: 0.15rem 0.5rem; border-radius: 999px; border: 1px solid currentColor; }
.tonec-verdict.ok { color: #2E7D4F; }
.tonec-verdict.mid { color: #B7791F; }
.tonec-verdict.bad { color: #C5412D; }
.tonec-svg { width: 100%; height: auto; display: block; margin: 0.4rem 0 0.1rem; }
.tonec-zero { stroke: var(--line, #d8d2c4); stroke-width: 1; stroke-dasharray: 2 3; }
.tonec-native { fill: none; stroke: var(--ink, #26221C); stroke-width: 2; stroke-dasharray: 5 4; opacity: 0.75; }
[data-theme="dark"] .tonec-native { stroke: #EDE8DF; }
.tonec-learner { fill: none; stroke: var(--cinnabar, #C5412D); stroke-width: 2.5; }
.tonec-legend { font-size: 0.75rem; margin: 0 0 0.3rem; }
.tonec-lg-native::before { content: '– – '; }
.tonec-lg-learner::before { content: '— '; color: var(--cinnabar, #C5412D); }
.tonec-tip { margin: 0.2rem 0 0; font-size: 0.9rem; }
.tonec-lowconf { font-size: 0.8rem; }
.tonec-calprompt { font-weight: 600; }
.tonec-calchar { font-size: 3rem; text-align: center; margin: 0.4rem 0; }
.tonec-open { background: none; border: none; cursor: pointer; font-size: 0.95rem; padding: 0.1rem 0.25rem; }
.word-mic { background: none; border: 1px solid var(--line, #d8d2c4); border-radius: 4px; cursor: pointer; padding: 0.15rem 0.4rem; font-size: 0.85rem; }
.tc.mic { font-size: 0.9rem; }