:root {
  color-scheme: dark;
  --ink: #171512;
  --ink-soft: #29241e;
  --paper: #e6d8b8;
  --paper-deep: #cbb88f;
  --cinnabar: #a93d2f;
  --azurite: #3e7775;
  --line: rgba(230, 216, 184, 0.38);
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 50% 10%, rgba(62, 119, 117, 0.19), transparent 38rem),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.012) 0 1px, transparent 1px 5px),
    #0d0c0a;
  color: var(--paper);
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
}

button, a { font: inherit; }

button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 3px solid #e7ba62;
  outline-offset: 3px;
}

.page-shell {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  gap: 16px;
  padding: 18px max(12px, env(safe-area-inset-right)) 24px max(12px, env(safe-area-inset-left));
}

.game-frame {
  position: relative;
  width: min(100%, 420px, calc((100dvh - 92px) * 420 / 747));
  aspect-ratio: 420 / 747;
  overflow: hidden;
  border: 1px solid rgba(230, 216, 184, 0.46);
  border-radius: var(--radius);
  background: #b5a581;
  box-shadow: 0 28px 90px rgba(0,0,0,0.58), inset 0 0 0 5px rgba(24,20,15,0.48);
}

.game-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 75px 20px rgba(10,9,7,0.58);
  z-index: 2;
}

#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.hidden { display: none !important; }

.overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 38px 30px;
  text-align: center;
  background: linear-gradient(rgba(18,16,13,0.57), rgba(18,16,13,0.9));
}

.start-screen::before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(230,216,184,0.17);
  border-radius: 50%;
  box-shadow: 0 0 0 28px rgba(230,216,184,0.025), 0 0 0 54px rgba(230,216,184,0.02);
  z-index: -1;
}

.eyebrow {
  margin: 0 0 16px;
  color: #d7c398;
  font-size: 12px;
  letter-spacing: .34em;
}

h1 {
  display: flex;
  gap: .08em;
  margin: 0;
  color: #efe3c9;
  font-size: clamp(66px, 20vw, 92px);
  font-weight: 800;
  line-height: .92;
  text-shadow: 0 3px 0 #241d16, 0 10px 32px rgba(0,0,0,.68);
}

h1 span:nth-child(2) { color: #78a8a1; transform: translateY(-10px); }
h1 span:nth-child(3) { color: #c25746; }

.premise {
  max-width: 310px;
  margin: 28px 0 22px;
  color: rgba(239,227,201,.86);
  font-size: 15px;
  line-height: 1.9;
}

.control-note {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  font-family: system-ui, sans-serif;
  font-size: 11px;
  color: rgba(239,227,201,.72);
}

.control-note span + span::before { content: "·"; margin-right: 12px; }

.seal-button, .paper-button, .upgrade-card {
  min-height: 48px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: var(--radius);
  cursor: pointer;
}

.seal-button {
  min-width: 172px;
  padding: 13px 24px;
  color: #fff6e2;
  background: var(--cinnabar);
  box-shadow: inset 0 0 0 3px rgba(255,255,255,.09), 0 8px 24px rgba(76,22,15,.42);
  font-weight: 700;
  letter-spacing: .18em;
}

.seal-button:hover:not(:disabled) { background: #bd4939; }
.seal-button:disabled { cursor: wait; opacity: .55; }

.paper-button {
  padding: 12px 18px;
  color: #241e18;
  background: var(--paper);
  font-weight: 700;
}

.load-status, .save-status {
  min-height: 18px;
  margin: 14px 0 0;
  color: rgba(230,216,184,.68);
  font: 12px/1.5 system-ui, sans-serif;
}

.hud {
  position: absolute;
  z-index: 4;
  top: max(12px, env(safe-area-inset-top));
  left: 14px;
  right: 14px;
  display: grid;
  grid-template-columns: 58px 1fr 58px;
  gap: 10px;
  align-items: center;
  padding: 9px 10px;
  border: 1px solid rgba(230,216,184,.28);
  border-radius: var(--radius);
  background: rgba(20,17,13,.76);
  backdrop-filter: blur(8px);
  font-family: system-ui, sans-serif;
}

.hud-value span, .progress-label span { display: block; color: rgba(230,216,184,.66); font-size: 10px; }
.hud-value strong { font-size: 18px; }
.hud-value-right { text-align: right; }
.progress-label { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 5px; }
.progress-label strong { color: #9fc7bd; font-size: 12px; }
.progress-track { height: 5px; overflow: hidden; background: rgba(230,216,184,.17); }
.progress-track span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--cinnabar), #80aaa4); transition: width .25s ease; }

.upgrade-screen { background: rgba(15,13,10,.87); }
.upgrade-screen h2, .result-screen h2 { margin: 0 0 24px; font-size: 34px; letter-spacing: .16em; }
.upgrade-options { display: grid; width: 100%; gap: 10px; }
.upgrade-card {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: center;
  width: 100%;
  padding: 12px 14px;
  color: #2c241b;
  text-align: left;
  background: linear-gradient(110deg, #efe1c1, #cbb98f);
}
.upgrade-card:hover { transform: translateX(4px); }
.upgrade-mark { display: grid; place-items: center; width: 38px; height: 38px; border: 2px solid var(--cinnabar); color: var(--cinnabar); font-weight: 800; }
.upgrade-card strong, .upgrade-card small { display: block; }
.upgrade-card small { margin-top: 4px; color: #63513f; font: 12px/1.45 system-ui, sans-serif; }

.result-screen {
  background: linear-gradient(rgba(18,15,11,.5), rgba(18,15,11,.94));
}
.result-copy { margin: -10px 0 20px; max-width: 290px; line-height: 1.7; }
.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); width: 100%; margin: 0 0 22px; padding: 15px 0; border-block: 1px solid var(--line); }
.result-stats div { display: grid; gap: 4px; }
.result-stats dt { color: rgba(230,216,184,.62); font-size: 11px; }
.result-stats dd { margin: 0; color: #f1e5ca; font-size: 25px; font-weight: 700; }
.result-actions { display: grid; width: min(100%, 260px); gap: 10px; }

.boss-alert {
  position: absolute;
  z-index: 4;
  top: 92px;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  padding: 8px 18px;
  border-block: 1px solid rgba(188,70,54,.68);
  color: #f5d8c6;
  background: rgba(56,15,11,.72);
  letter-spacing: .28em;
}

.provenance {
  width: min(100%, 420px);
  color: rgba(230,216,184,.68);
  font: 12px/1.65 system-ui, sans-serif;
}
.provenance summary { cursor: pointer; color: rgba(230,216,184,.82); }
.provenance a { color: #9fc7bd; }

@media (max-width: 460px) {
  .page-shell { padding: 8px 0 18px; }
  .game-frame { width: min(100%, calc((100dvh - 72px) * 420 / 747)); border-radius: 0; }
  .provenance { padding: 14px 16px 28px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
  .upgrade-card:hover { transform: none; }
}