:root {
  --bg: #fbf7ee;
  --bg-card: #fffcf3;
  --ink: #1f1a14;
  --ink-soft: #4a4036;
  --ink-faint: #8a7d6c;
  --rule: #d9cfb8;
  --rule-soft: #ece3cd;
  --accent: #8a3324;
  --accent-soft: #c8a89a;
  --highlight: #f3e9c8;
  --shadow: 0 1px 0 rgba(70, 50, 20, 0.04), 0 8px 28px -12px rgba(70, 50, 20, 0.18);

  --font-latin: "EB Garamond", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-cjk-zh: "Noto Serif TC", "Source Han Serif TC", "Source Han Serif CN", "Songti SC", "PingFang SC", serif;
  --font-cjk-jp: "Noto Serif JP", "Source Han Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --font-tib: "Noto Serif Tibetan", "Microsoft Himalaya", "Jomolhari", serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15110b;
    --bg-card: #1c1812;
    --ink: #ece3cf;
    --ink-soft: #b8ad97;
    --ink-faint: #7d7361;
    --rule: #3a3225;
    --rule-soft: #2a2418;
    --accent: #d8927e;
    --accent-soft: #6e433a;
    --highlight: #2e2516;
    --shadow: 0 1px 0 rgba(0,0,0,0.3), 0 12px 32px -12px rgba(0,0,0,0.6);
  }
}

* { box-sizing: border-box; }

html {
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-latin);
  line-height: 1.65;
  font-feature-settings: "kern", "liga", "onum";
  font-variant-numeric: oldstyle-nums;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.page {
  max-width: 780px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 6rem;
}

@media (min-width: 720px) {
  .page { padding: 4rem 2rem 8rem; }
}

/* ── Header ─────────────────────────────────────── */

.masthead {
  text-align: center;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--rule);
}

.masthead h1 {
  font-family: var(--font-latin);
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 2.8rem);
  letter-spacing: 0.01em;
  margin: 0 0 0.6rem;
  color: var(--ink);
}

.masthead .subtitle {
  font-size: 1rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.9;
  word-spacing: 0.15em;
}
.masthead .subtitle .sep { color: var(--ink-faint); margin: 0 0.35em; }
.masthead .subtitle .zh { font-family: var(--font-cjk-zh); }
.masthead .subtitle .jp { font-family: var(--font-cjk-jp); }
.masthead .subtitle .tib { font-family: var(--font-tib); font-size: 1.15em; line-height: 1; }

/* ── Intro ──────────────────────────────────────── */

.intro {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 2.5rem;
}
.intro p + p { margin-top: 1rem; }
.intro .zh { font-family: var(--font-cjk-zh); font-size: 1.02em; line-height: 1.85; }

/* ── Toggle bar ─────────────────────────────────── */

.toggles {
  position: sticky;
  top: 0;
  z-index: 10;
  margin: 0 -1.25rem 2rem;
  padding: 0.65rem 1.25rem;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  -webkit-backdrop-filter: saturate(1.3) blur(8px);
  backdrop-filter: saturate(1.3) blur(8px);
  border-bottom: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.5rem;
  justify-content: center;
  align-items: center;
  font-size: 0.85rem;
}

@media (min-width: 720px) {
  .toggles {
    margin-left: -2rem;
    margin-right: -2rem;
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

.toggles .label {
  color: var(--ink-faint);
  font-variant: small-caps;
  letter-spacing: 0.08em;
  margin-right: 0.25rem;
}

.toggle-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--bg-card);
  color: var(--ink-soft);
  cursor: pointer;
  user-select: none;
  font-size: 0.82rem;
  transition: all 0.15s ease;
}
.toggle-chip:hover { border-color: var(--accent-soft); color: var(--ink); }
.toggle-chip.on {
  background: var(--accent);
  border-color: var(--accent);
  color: #fffcf3;
}
.toggle-chip input { display: none; }

/* ── Verse card ─────────────────────────────────── */

.verse {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.5rem 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
  position: relative;
}

@media (min-width: 720px) {
  .verse { padding: 2rem 2.25rem; }
}

.verse__num {
  position: absolute;
  top: -0.7rem;
  left: 1.25rem;
  font-size: 0.72rem;
  font-variant: small-caps;
  letter-spacing: 0.15em;
  color: var(--accent);
  background: var(--bg);
  padding: 0.1rem 0.6rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
}

.verse--title {
  text-align: center;
  border-color: var(--accent-soft);
}

/* Each language row */
.line {
  padding: 0.75rem 0;
  border-bottom: 1px dashed var(--rule-soft);
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 0.5rem 0.9rem;
  align-items: baseline;
}
.line:last-child { border-bottom: none; }
.line[hidden] { display: none; }

.line__tag {
  font-size: 0.68rem;
  font-variant: small-caps;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  padding-top: 0.25em;
  font-family: var(--font-latin);
  font-feature-settings: "kern";
  font-variant-numeric: lining-nums;
}

.line__text {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--ink);
}

.line--skt .line__text { font-style: italic; color: var(--ink); }
.line--zh .line__text { font-family: var(--font-cjk-zh); font-size: 1.18rem; line-height: 1.9; letter-spacing: 0.05em; }
.line--jp .line__text { font-family: var(--font-cjk-jp); font-size: 1.05rem; line-height: 1.85; }
.line--jp .romaji { display: block; font-family: var(--font-latin); font-size: 0.92rem; color: var(--ink-soft); font-style: italic; margin-top: 0.2rem; letter-spacing: 0.01em; }
.line--tib .line__text { font-family: var(--font-latin); font-size: 0.95rem; color: var(--ink-soft); font-style: italic; line-height: 1.7; }
.line--en .line__text { color: var(--ink); font-size: 1.05rem; }

.verse--title .line__text { font-size: 1.25rem; }
.verse--title .line--zh .line__text { font-size: 1.5rem; }
.verse--title .line--jp .line__text { font-size: 1.3rem; }

@media (max-width: 520px) {
  .line { grid-template-columns: 1fr; gap: 0.15rem; }
  .line__tag { padding-top: 0; }
}

/* Literal gloss block */
.gloss {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule-soft);
}
.gloss__heading {
  font-size: 0.7rem;
  font-variant: small-caps;
  letter-spacing: 0.15em;
  color: var(--ink-faint);
  margin-bottom: 0.6rem;
}
.gloss__heading button {
  background: none;
  border: none;
  color: inherit;
  font: inherit;
  font-variant: small-caps;
  letter-spacing: 0.15em;
  padding: 0;
  cursor: pointer;
}
.gloss__heading button:hover { color: var(--accent); }
.gloss__heading .caret { display: inline-block; transition: transform 0.2s ease; margin-left: 0.3rem; }
.gloss[open] .gloss__heading .caret { transform: rotate(90deg); }

.gloss dl {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(120px, max-content) 1fr;
  gap: 0.4rem 1.2rem;
  font-size: 0.95rem;
  line-height: 1.55;
}
.gloss dt {
  font-style: italic;
  color: var(--accent);
  font-weight: 500;
}
.gloss dd { margin: 0; color: var(--ink-soft); }

@media (max-width: 520px) {
  .gloss dl { grid-template-columns: 1fr; gap: 0 0; }
  .gloss dd { margin-bottom: 0.5rem; }
}

.gloss__zh {
  margin-top: 0.9rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--rule-soft);
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.65;
}
.gloss__zh strong { color: var(--ink); font-weight: 500; }
.gloss__zh .zh { font-family: var(--font-cjk-zh); }

/* Notes / asides inside a verse */
.aside {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  background: var(--highlight);
  border-left: 2px solid var(--accent);
  border-radius: 0 4px 4px 0;
  font-size: 0.93rem;
  line-height: 1.65;
  color: var(--ink-soft);
}
.aside .zh { font-family: var(--font-cjk-zh); }

/* ── Glossary ───────────────────────────────────── */

.section-heading {
  font-family: var(--font-latin);
  font-weight: 500;
  font-size: 1.5rem;
  margin: 4rem 0 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
}

.glossary {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

.glossary__item {
  padding: 0.9rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 4px;
}
.glossary__term {
  font-style: italic;
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 500;
}
.glossary__zh { font-family: var(--font-cjk-zh); color: var(--ink-soft); margin-left: 0.5em; }
.glossary__def { margin-top: 0.25rem; color: var(--ink-soft); font-size: 0.97rem; line-height: 1.6; }

@media (min-width: 600px) {
  .glossary { grid-template-columns: 1fr 1fr; }
}

/* ── Notes ──────────────────────────────────────── */

.notes {
  margin-top: 1.5rem;
}
.note-block {
  margin-bottom: 1.75rem;
  padding-left: 1rem;
  border-left: 2px solid var(--rule);
}
.note-block h3 {
  font-family: var(--font-latin);
  font-weight: 500;
  font-size: 1.1rem;
  margin: 0 0 0.4rem;
  color: var(--ink);
}
.note-block p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.7;
  font-size: 0.97rem;
}

/* ── Footer ─────────────────────────────────────── */

.colophon {
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-faint);
  font-variant: small-caps;
  letter-spacing: 0.1em;
}

/* ── Print ──────────────────────────────────────── */
@media print {
  .toggles { display: none; }
  .verse, .glossary__item { box-shadow: none; border-color: #ccc; break-inside: avoid; }
  body { background: white; color: black; }
}