:root {
  color-scheme: light;
  --cp-bg: #f7f4ef;
  --cp-bg-elevated: #fcfbf8;
  --cp-surface: #ffffff;
  --cp-surface-soft: #f5f5f5;
  --cp-border: #dedede;
  --cp-border-strong: #919191;
  --cp-text: #242424;
  --cp-text-muted: #5c5c5c;
  --cp-text-soft: #6f6f6f;
  --cp-accent: #b11f4b;
  --cp-accent-hover: #9a1a41;
  --cp-accent-soft: rgba(177, 31, 75, 0.08);
  --cp-accent-fg: #ffffff;
  --cp-success: #16a34a;
  --cp-danger: #dc2626;
  --cp-warning: #f59e0b;
  --cp-link: #0078d4;
  --cp-shadow: 0 18px 48px rgba(0, 0, 0, 0.12);
  --cp-overlay: rgba(255, 255, 255, 0.8);
  --cp-panel: rgba(255, 255, 255, 0.86);
  --cp-panel-strong: rgba(255, 255, 255, 0.96);
  --cp-sheen: rgba(255, 255, 255, 0.55);
  --cp-highlight: rgba(177, 31, 75, 0.12);
}
html[data-theme="dark"] {
  color-scheme: dark;
  --cp-bg: #3d3b3a;
  --cp-bg-elevated: #343231;
  --cp-surface: #292929;
  --cp-surface-soft: #2e2e2e;
  --cp-border: #474747;
  --cp-border-strong: #5f5f5f;
  --cp-text: #dedede;
  --cp-text-muted: #919191;
  --cp-text-soft: #b0b0b0;
  --cp-accent: #fd8ea1;
  --cp-accent-hover: #fb7b91;
  --cp-accent-soft: rgba(253, 142, 161, 0.14);
  --cp-accent-fg: #1a1a1a;
  --cp-success: #4ade80;
  --cp-danger: #f87171;
  --cp-warning: #fbbf24;
  --cp-link: #4da6ff;
  --cp-shadow: 0 18px 48px rgba(0, 0, 0, 0.32);
  --cp-overlay: rgba(41, 41, 41, 0.88);
  --cp-panel: rgba(41, 41, 41, 0.72);
  --cp-panel-strong: rgba(41, 41, 41, 0.96);
  --cp-sheen: rgba(255, 255, 255, 0.04);
  --cp-highlight: rgba(253, 142, 161, 0.12);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--cp-bg); color: var(--cp-text); font: 16px/1.7 "Segoe UI", Aptos, Calibri, -apple-system, BlinkMacSystemFont, sans-serif; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button, .button { cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 8px 16px; border: 1px solid var(--cp-border); border-radius: .625rem; background: var(--cp-surface); }
button:hover, .button:hover { border-color: var(--cp-accent); color: var(--cp-accent); }
.primary { color: var(--cp-accent-fg); background: var(--cp-accent); border-color: var(--cp-accent); }
.primary:hover { background: var(--cp-accent-hover); color: var(--cp-accent-fg); }
:focus-visible { outline: 3px solid var(--cp-accent); outline-offset: 4px; }
.skip { position: absolute; top: -100px; padding: 8px; background: var(--cp-surface); z-index: 3; }
.skip:focus { top: 0; }
header { display: flex; align-items: center; gap: 32px; max-width: 1320px; margin: auto; padding: 24px 40px; border-bottom: 1px solid var(--cp-border); }
.brand { display: flex; align-items: center; gap: 12px; font-size: 24px; font-weight: 600; line-height: 1.2; }
.brand small { display: block; font-size: 11px; letter-spacing: .18em; color: var(--cp-text-muted); margin-top: 8px; white-space: nowrap; }
.seal { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid var(--cp-accent); color: var(--cp-accent); border-radius: .625rem; font-size: 30px; }
nav { flex: 1; display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; }
nav a { font-size: 14px; color: var(--cp-text-muted); padding: 8px 0; }
nav a[aria-current="page"], nav a:hover { color: var(--cp-accent); }
.settings { display: flex; gap: 8px; }
.settings button { padding: 8px 12px; background: var(--cp-bg-elevated); }
main { max-width: 1200px; margin: auto; padding: 48px 32px 96px; min-height: 70vh; }
.eyebrow { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .2em; color: var(--cp-accent); }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(36px, 5vw, 68px); line-height: 1.2; font-weight: 500; letter-spacing: -.025em; margin-bottom: 24px; }
h2 { font-size: 28px; line-height: 1.35; font-weight: 500; }
h3 { font-size: 20px; font-weight: 500; line-height: 1.5; }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 48px; padding: 32px 0 56px; }
.hero p { max-width: 540px; color: var(--cp-text-muted); font-size: 18px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.landscape { position: relative; min-width: 0; }
.landscape svg { width: 100%; display: block; color: var(--cp-text); }
svg .mountain { fill: var(--cp-surface-soft); stroke: var(--cp-border-strong); stroke-width: 1; }
svg .river { fill: none; stroke: var(--cp-accent); stroke-width: 2; }
svg .sun { fill: var(--cp-accent-soft); stroke: var(--cp-accent); }
.landscape .caption { text-align: center; font-size: 12px; color: var(--cp-text-soft); letter-spacing: .1em; margin-top: 12px; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; margin: 40px 0 24px; }
.section-head p { color: var(--cp-text-muted); }
.grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.two { grid-template-columns: repeat(2,minmax(0,1fr)); }
.card { min-width: 0; padding: 28px; border: 1px solid var(--cp-border); background: var(--cp-bg-elevated); border-radius: 16px; }
a.card { display: block; transition: border-color .2s, transform .2s; }
a.card:hover { border-color: var(--cp-accent); transform: translateY(-3px); }
.card p { color: var(--cp-text-muted); margin-bottom: 0; }
.card .number { font: 13px Consolas, "Courier New", Courier, monospace; color: var(--cp-accent); margin-bottom: 16px; display: block; }
.card .glyph { font-size: 44px; line-height: 1.3; margin-bottom: 12px; color: var(--cp-accent); }
.arrow { color: var(--cp-accent); margin-top: 20px; display: block; }
.quote-band { border-top: 1px solid var(--cp-border); border-bottom: 1px solid var(--cp-border); margin: 48px 0; padding: 36px 0; display: grid; grid-template-columns: 1fr 2fr; gap: 32px; }
.quote-band blockquote { margin: 0; font-size: 28px; line-height: 1.8; }
.quote-band small { display: block; font-size: 13px; color: var(--cp-text-muted); margin-top: 16px; }
.intro { max-width: 760px; margin-bottom: 36px; }
.intro p { color: var(--cp-text-muted); font-size: 18px; }
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 28px; }
input, select, textarea { min-width: 0; background: var(--cp-surface); border: 1px solid var(--cp-border); border-radius: .625rem; padding: 12px 16px; }
input { flex: 1; min-width: 180px; }
label { display: block; }
.muted, .meta { color: var(--cp-text-muted); }
.meta { font-size: 13px; }
.tag { display: inline-block; padding: 4px 10px; border-radius: .625rem; background: var(--cp-accent-soft); color: var(--cp-accent); font-size: 12px; margin: 4px 4px 0 0; }
.chapter-grid .card { padding: 24px; }
.chapter-grid .excerpt { font-size: 17px; line-height: 1.9; margin-top: 12px; }
.reader-heading { display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.reader-heading h1 { font-size: clamp(32px, 4vw, 52px); }
.reading { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.reading section { padding: 32px; background: var(--cp-bg-elevated); border: 1px solid var(--cp-border); border-radius: 16px; min-width: 0; }
.original { font-size: 24px; line-height: 2.2; letter-spacing: .06em; white-space: pre-line; }
.translation { white-space: pre-line; line-height: 2; }
details { margin-top: 20px; }
summary { cursor: pointer; color: var(--cp-accent); padding: 8px 0; }
.reader-nav { display: flex; justify-content: space-between; gap: 12px; margin: 32px 0; }
.reading a, .prose a { color: var(--cp-accent); text-decoration: underline; text-underline-offset: 3px; }
.prose { max-width: 800px; }
.prose h2 { margin-top: 36px; }
.lesson { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.lesson svg { width: 100%; height: 240px; }
.lesson-controls { display: flex; gap: 8px; flex-wrap: wrap; }
[aria-pressed="true"] { background: var(--cp-accent-soft); border-color: var(--cp-accent); color: var(--cp-accent); }
.callout { border-left: 3px solid var(--cp-accent); background: var(--cp-accent-soft); padding: 20px 24px; margin: 24px 0; border-radius: 0 .625rem .625rem 0; }
.practice textarea { width: 100%; min-height: 180px; margin: 12px 0; resize: vertical; }
.empty { padding: 48px; text-align: center; border: 1px dashed var(--cp-border); border-radius: 16px; }
footer { border-top: 1px solid var(--cp-border); max-width: 1320px; margin: auto; padding: 32px 40px; display: flex; gap: 24px; align-items: center; color: var(--cp-text-muted); font-size: 12px; flex-wrap: wrap; }
footer a { color: var(--cp-accent); font-size: 18px; }
footer p { margin: 0; flex: 1; }
.error { color: var(--cp-danger); }
@media (min-width: 1500px) { main { padding-top: 64px; } }
@media (max-width: 900px) {
  header { gap: 20px; padding: 20px 24px; flex-wrap: wrap; }
  nav { order: 3; flex-basis: 100%; justify-content: flex-start; gap: 20px; }
  .settings { margin-left: auto; }
  .hero { gap: 24px; }
  .grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .reading { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  main { padding: 24px 20px 64px; }
  header { padding: 16px 20px; }
  nav { gap: 16px; }
  nav a { font-size: 13px; }
  .hero { grid-template-columns: 1fr; padding-top: 20px; gap: 24px; }
  .hero h1 { font-size: 44px; }
  .landscape { max-width: 420px; }
  .grid, .two, .lesson, .quote-band { grid-template-columns: 1fr; }
  .section-head { display: block; }
  .card { padding: 24px; }
  .quote-band { gap: 16px; margin: 32px 0; }
  .quote-band blockquote { font-size: 24px; }
  .reader-heading { display: block; }
  .reading section { padding: 24px; }
  .original { font-size: 21px; }
  .reader-nav .button { padding: 8px 12px; font-size: 14px; }
  footer { padding: 24px 20px; gap: 12px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }