:root {
  --paper: #f1e6d0;
  --paper-2: #e8d8b8;
  --ink: #241c12;
  --muted: #6b5a45;
  --spine: #7a2e24;
  --moss: #2d5440;
  --stamp: #c23b22;
  --gold: #c9a227;
  --line: rgba(36, 28, 18, 0.14);
  --shadow: rgba(36, 28, 18, 0.12);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Songti SC", "STSong", "Georgia", serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 10% -10%, #d9c4a0 0%, transparent 55%),
    radial-gradient(900px 500px at 110% 10%, #cbb892 0%, transparent 50%),
    #cbb892;
  background-attachment: fixed;
}

.page {
  max-width: 920px;
  margin: 28px auto 80px;
  background: var(--paper);
  border: 1px solid rgba(36, 28, 18, 0.18);
  box-shadow: 12px 18px 0 var(--shadow);
  position: relative;
  overflow: hidden;
}

.page::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 18px;
  background: repeating-linear-gradient(
    to bottom,
    var(--spine) 0 18px,
    #5c2119 18px 22px
  );
}

.page::after {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.045'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

.inner {
  padding: 36px 32px 48px 48px;
  position: relative;
  z-index: 1;
}

.kicker {
  font-family: Georgia, "Songti SC", serif;
  font-style: italic;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: var(--spine);
  text-transform: uppercase;
}

h1 {
  font-family: Georgia, "Songti SC", serif;
  font-weight: 600;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.15;
  margin: 8px 0 10px;
}

.lede {
  color: var(--muted);
  max-width: 38em;
  margin: 0 0 22px;
}

nav.books {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
}
nav.books button {
  font: inherit;
  background: rgba(255,255,255,0.35);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 8px 14px;
  cursor: pointer;
}
nav.books button[aria-current="page"] {
  background: var(--spine);
  color: var(--paper);
  border-color: var(--spine);
}

nav.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 28px;
}

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

nav.tabs button[aria-current="page"] {
  background: var(--ink);
  color: var(--paper);
}

.whisper {
  font-size: 14px;
  color: var(--muted);
  border-left: 3px solid var(--gold);
  padding: 8px 0 8px 14px;
  margin: 0 0 22px;
}

h2 {
  font-family: Georgia, "Songti SC", serif;
  font-size: 26px;
  margin: 8px 0 12px;
}

h3 { font-size: 18px; margin: 22px 0 8px; }

.en {
  font-family: Georgia, "Songti SC", serif;
  font-size: 22px;
  font-weight: 500;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 16px 0 8px;
}

.stat {
  border: 1px solid var(--line);
  padding: 14px 14px 12px;
  background: rgba(255,255,255,0.28);
}
.stat b {
  display: block;
  font-family: Georgia, "Songti SC", serif;
  font-size: 28px;
  font-weight: 600;
}

.nights, .roots, .units, .quiz, .fix {
  display: none;
}
.nights.show, .roots.show, .units.show, .quiz.show, .fix.show { display: block; }

.card {
  border: 1px solid var(--line);
  padding: 16px 18px;
  margin: 0 0 12px;
  background: rgba(255,255,255,0.35);
}

.card h3 { margin-top: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  margin: 8px 0 16px;
}
th, td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 9px 8px;
  vertical-align: top;
}
th { color: var(--muted); font-weight: 600; }

.script {
  background: #efe3c8;
  padding: 14px 18px 14px 8px;
}
.script ol { margin: 0; }

.btn {
  font: inherit;
  background: var(--moss);
  color: #f6f1e4;
  border: 0;
  padding: 10px 16px;
  cursor: pointer;
}
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}

.choices { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.choices button {
  font: inherit;
  font-family: Georgia, "Songti SC", serif;
  font-size: 18px;
  padding: 10px 16px;
  background: #fff8ea;
  border: 1px solid var(--ink);
  cursor: pointer;
}
.choices button.ok { background: var(--moss); color: #f6f1e4; }
.choices button.bad { background: var(--stamp); color: #fff; }

.prompt {
  font-size: 20px;
  margin: 0 0 6px;
}

.stamp {
  display: none;
  font-family: Georgia, "Songti SC", serif;
  color: var(--stamp);
  border: 3px solid var(--stamp);
  width: 88px;
  height: 88px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  transform: rotate(-12deg);
  font-size: 22px;
  font-weight: 700;
}
.stamp.show { display: flex; }

.speak {
  font: inherit;
  font-size: 13px;
  margin-left: 8px;
  border: 1px solid var(--moss);
  background: transparent;
  color: var(--moss);
  cursor: pointer;
  padding: 2px 8px;
}
.speak.playing {
  background: var(--moss);
  color: var(--paper);
}

footer.colophon {
  margin-top: 36px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 720px) {
  .page { margin: 0; box-shadow: none; min-height: 100vh; }
  .inner { padding: 24px 18px 40px 32px; }
  .grid-3 { grid-template-columns: 1fr; }
  h1 { font-size: 32px; }
}

@media print {
  body { background: #fff; }
  .page { box-shadow: none; border: 0; }
  nav.tabs, nav.books, .speak, .choices, .btn { display: none !important; }
}