:root {
  --ink: #1c1914;
  --muted: #6d6458;
  --line: #e2d8c8;
  --paper: #f6f1e7;
  --card: #fffdf8;
  --accent: #0f6e6b;
  --accent-soft: #e5f3f1;
  --warn: #8a4b12;
  --warn-soft: #f8ead8;
  --shadow: 0 18px 40px rgba(60, 42, 18, 0.06);
  color-scheme: light;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 420px at 8% -10%, #efe4cf 0%, transparent 60%),
    var(--paper);
  color: var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

.top {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: end;
  padding: 28px 36px 18px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 4px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-family: "Instrument Serif", "Noto Serif SC", serif;
  font-weight: 400;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 0.9;
}

.lede {
  max-width: 28em;
  margin: 0;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: calc(100vh - 120px);
}

#tasks {
  border-right: 1px solid var(--line);
  padding: 18px 14px 40px;
}

.task-link {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  padding: 12px 12px 14px;
  border-radius: 12px;
  cursor: pointer;
}

.task-link.active {
  background: var(--card);
  box-shadow: var(--shadow);
}

.task-link strong { display: block; font-weight: 700; }
.task-link span { display: block; margin-top: 4px; color: var(--muted); font-size: 13px; }

.pill {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--warn-soft);
  color: var(--warn);
  font-size: 12px;
}

main { padding: 28px 36px 80px; }

.hero h2 {
  margin: 8px 0 8px;
  font-family: "Instrument Serif", serif;
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 400;
  line-height: 1.05;
}

.summary { margin: 0 0 18px; max-width: 46em; font-size: 17px; }

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.facts li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
}

.facts small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.facts code, .notes code, .prompt code {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.facts li.span {
  grid-column: 1 / -1;
}

.facts li.span code {
  display: block;
  margin-top: 8px;
  white-space: pre;
  overflow-x: auto;
  word-break: normal;
  line-height: 1.55;
}

.notes {
  margin: 0 0 22px;
  padding: 4px 0 0 18px;
  color: var(--ink);
}

.notes li { margin: 6px 0; }

.toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 10px 0;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
}

.tabs { display: flex; gap: 6px; }

.tabs button, .copy {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 14px;
  font: inherit;
  cursor: pointer;
}

.tabs button.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.copy { margin-left: auto; }

#finder {
  width: min(240px, 30vw);
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  padding: 8px 14px;
  font: inherit;
}

.prompt-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 22px;
  align-items: start;
}

.prompt {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px 24px;
  box-shadow: var(--shadow);
  font-size: 14.5px;
  line-height: 1.7;
}

mark {
  background: #ffe08a;
  color: inherit;
  border-radius: 3px;
}

.outline {
  position: sticky;
  top: 64px;
  max-height: calc(100vh - 90px);
  overflow: auto;
  font-size: 13px;
}

.outline a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  padding: 4px 0;
}

.outline a:hover { color: var(--accent); }

.empty { color: var(--muted); }

@media (max-width: 980px) {
  .top, .layout { display: block; }
  #tasks { border-right: 0; border-bottom: 1px solid var(--line); }
  .prompt-wrap { display: block; }
  .outline { position: static; max-height: none; margin-top: 16px; }
  .copy { margin-left: 0; }
  .toolbar { flex-wrap: wrap; }
}