:root {
  color-scheme: dark;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-synthesis: none;
  color: #f2e8d4;
  background: #151d1b;
  --ink: #f2e8d4;
  --muted: #b9b9a6;
  --brass: #d8b57b;
  --edge: #62563e;
  --glass: #a3d9d5;
  --panel: #202a27;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  padding: 0 max(24px, env(safe-area-inset-right)) 24px max(24px, env(safe-area-inset-left));
  background:
    radial-gradient(ellipse at 31% -60px, #35413a 0%, transparent 54%),
    repeating-linear-gradient(99deg, #ffffff02 0 1px, transparent 1px 7px),
    #151d1b;
}
.masthead, main { max-width: 1056px; margin-inline: auto; }
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 57px;
  border-bottom: 1px solid var(--edge);
}
.edition {
  display: flex;
  gap: 11px;
  align-items: center;
  font: 24px Georgia, serif;
  white-space: nowrap;
}
.edition i {
  margin-left: 5px;
  color: var(--brass);
  font-size: .73em;
}
.seal {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 1px solid #9d8053;
  border-radius: 50%;
  box-shadow: inset 0 0 0 3px #202a27, inset 0 0 0 4px #9d805363;
}
.seal::before {
  content: "";
  width: 8px;
  height: 8px;
  transform: rotate(-45deg);
  border-radius: 0 50% 50%;
  background: var(--glass);
}
a { color: var(--brass); text-underline-offset: 3px; }
.back {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 13px;
}
.intro { padding: 17px 0 13px; }
.chapter-kicker {
  margin: 0 0 2px;
  color: var(--brass);
  font-size: 12px;
  letter-spacing: .045em;
  font-variant-numeric: tabular-nums;
}
h1, h2 { font-family: Georgia, "Times New Roman", serif; font-weight: 400; }
h1 { margin: 0; font-size: clamp(35px, 5vw, 58px); letter-spacing: -.04em; line-height: 1.02; }
p { margin: 8px 0; color: var(--muted); line-height: 1.45; }
#chapter-description { max-width: 65ch; margin: 5px 0 0; font-size: 15px; }
#chapter-nav {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 660px;
  margin: 0 0 14px;
  isolation: isolate;
  gap: 6px;
}
#chapter-nav:empty { display: none; }
#chapter-nav::before {
  position: absolute;
  content: "";
  z-index: -1;
  top: 50%;
  width: 100%;
  height: 4px;
  border-block: 1px solid #a68957;
  background: #594a35;
}
.chapter {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  padding: 7px 10px 7px 23px;
  border: 1px solid #746549;
  border-radius: 4px;
  color: var(--ink);
  background: #242d28;
  box-shadow: inset 0 1px #ffffff10;
  font-size: 13px;
  line-height: 1.2;
  text-decoration: none;
}
.chapter > span { color: #ddc494; font-variant-numeric: tabular-nums; }
.chapter > small { color: #dfd2b9; white-space: nowrap; }
.chapter::before {
  position: absolute;
  left: 9px;
  content: "";
  width: 6px;
  height: 6px;
  border: 1px solid var(--brass);
  border-radius: 50%;
}
.chapter:hover[href] { background: #34423a; }
.chapter[aria-disabled=true] { color: #adb0a1; background: #202923; border-style: dashed; }
.chapter[aria-disabled=true]::before { border-color: #85836e; }
.chapter[data-complete=true]::before { border-color: var(--glass); background: var(--glass); }
.chapter[aria-current=step] {
  border-color: var(--brass);
  background: #3c3628;
  box-shadow: inset 0 0 0 1px #d8b57b44;
}
.chapter[aria-current=step]::before { background: var(--brass); border-color: var(--brass); }
.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(288px, 1fr);
  align-items: start;
  gap: clamp(14px, 3vw, 28px);
}
.vessel, .instruments { min-width: 0; }
.vessel {
  padding: 9px;
  border: 1px solid #766347;
  border-radius: 9px;
  background: linear-gradient(112deg, #49402f, #282d25 49%, #32382e);
  box-shadow: inset 0 1px #ead6a135, 0 12px 27px #0004;
}
.vessel-heading {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  min-height: 25px;
  padding: 0 5px 5px;
  font-size: 13px;
}
.vessel-heading strong { color: #ffe5b5; font-weight: 600; }
#clock, #cursor, .goal output, #materials strong { font-variant-numeric: tabular-nums; }
#clock { color: #e4d4b5; text-align: right; }
.vessel-frame {
  position: relative;
  display: grid;
  place-items: center;
  background: #0e0e14;
  border: 1px solid #b29a6c;
  outline: 2px solid #171c19;
  border-radius: 3px;
}
.vessel-frame::before, .vessel-frame::after {
  position: absolute;
  z-index: 1;
  width: 13px;
  height: 13px;
  content: "";
  pointer-events: none;
  opacity: .9;
}
.vessel-frame::before { top: 3px; left: 3px; border-top: 1px solid #a78b5e; border-left: 1px solid #a78b5e; }
.vessel-frame::after { bottom: 3px; right: 3px; border-right: 1px solid #a78b5e; border-bottom: 1px solid #a78b5e; }
canvas {
  display: block;
  width: 100%;
  width: min(100%, max(330px, (100svh - 250px) * 1.148));
  height: auto;
  background: #0e0e14;
  image-rendering: pixelated;
  touch-action: none;
  cursor: crosshair;
}
.legend {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 7px 5px 2px;
  font-size: 12px;
  color: #ded5bc;
}
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { display: inline-block; width: 12px; height: 12px; }
.build-key { border: 1px dashed var(--brass); }
.water-key { border: 1px solid #93c8fb; background: #284e76; }
#cursor { margin-left: auto; }
.instruments {
  padding: 12px 14px;
  border: 1px solid #655f48;
  border-radius: 6px;
  background: var(--panel);
}
.goal { padding-bottom: 9px; border-bottom: 1px solid var(--edge); }
.goal h2 { margin: 0; font-size: 24px; line-height: 1.1; }
.goal p { font-size: 14px; margin: 5px 0 7px; }
.goal label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-top: 7px;
  font-size: 12px;
}
.goal output { color: #c7e9e2; white-space: nowrap; }
progress {
  appearance: none;
  display: block;
  width: 100%;
  height: 7px;
  margin-top: 4px;
  border: 1px solid #71694e;
  border-radius: 6px;
  overflow: hidden;
  accent-color: var(--glass);
  background: #101714;
}
progress::-webkit-progress-bar { background: #101714; }
progress::-webkit-progress-value { background: #97d0ce; }
progress::-moz-progress-bar { background: #97d0ce; }
#hold { accent-color: var(--brass); }
#hold::-webkit-progress-value { background: var(--brass); }
#hold::-moz-progress-bar { background: var(--brass); }
fieldset { margin: 9px 0 0; padding: 0; border: 0; min-width: 0; }
legend { margin-bottom: 4px; padding: 0; font-size: 12px; color: var(--muted); }
button, #next-chapter {
  min-height: 44px;
  padding: 6px 9px;
  border: 1px solid #71654c;
  border-radius: 4px;
  color: var(--ink);
  background: #303a32;
  box-shadow: inset 0 1px #ffffff0e;
  font: 14px/1.2 "Segoe UI", system-ui, sans-serif;
  cursor: pointer;
}
button:hover:not(:disabled), #next-chapter:hover { background: #404b3e; border-color: var(--brass); }
:where(button, a, summary, canvas):focus-visible { outline: 3px solid #b1e0ff; outline-offset: 3px; }
button:disabled { color: #a3a396; opacity: .7; cursor: default; }
button[aria-pressed=true] { border-color: var(--brass); background: #4b422f; }
#materials { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
#materials button { display: flex; align-items: center; gap: 7px; text-align: left; }
#materials strong { margin-left: auto; font-weight: 600; }
#materials i {
  width: 11px;
  height: 11px;
  flex-shrink: 0;
  border: 1px solid #eee6c25c;
  border-radius: 2px;
  box-shadow: inset 0 -2px #0003;
}
.stone-chip { background: #a7abac; }
.sand-chip { background: #d3a65a; }
.brushes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
.brushes button { padding-inline: 4px; }
.preview { margin: 6px 0; min-height: 19px; font-size: 12px; }
.actions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
.release, #retry, #next-chapter { grid-column: 1 / -1; }
.release, #next-chapter {
  background: #a8d8cc;
  border-color: #c1efdf;
  color: #142d2a;
  font-weight: 700;
}
.release:hover:not(:disabled), #next-chapter:hover { background: #c3ebdf; border-color: #d9f9ee; }
.release:disabled { background: #30443c; border-color: #657f72; color: #bcd3c8; }
#next-chapter { display: grid; place-items: center; text-align: center; text-decoration: none; }
#message {
  margin: 8px 0 0;
  min-height: 2.8em;
  color: #f1d49f;
  font-size: 13px;
}
#campaign-complete {
  padding: 8px 10px;
  border: 1px solid #629187;
  border-radius: 3px;
  color: #c5eadc;
  background: #233e36;
}
.records { margin: 5px 0 0; padding-top: 7px; border-top: 1px solid var(--edge); font-size: 12px; }
details { color: var(--muted); font-size: 13px; }
summary { display: list-item; width: fit-content; min-height: 44px; padding: 12px 2px; color: var(--brass); cursor: pointer; }
.hint summary { padding-left: 5px; }
.hint p { margin: 0 5px 5px; color: #eadbc0; }
.manual { margin: 12px 0 0; max-width: 70ch; }
body[data-phase=won] #phase { color: #afe5c7; }
body[data-phase=lost] #phase { color: #ffc2ad; }
@media (max-width: 710px) {
  body { padding-inline: max(12px, env(safe-area-inset-left)) max(12px, env(safe-area-inset-right)); }
  .masthead { min-height: 48px; }
  main { max-width: 500px; }
  .intro { padding-top: 13px; }
  #chapter-nav { margin-bottom: 11px; }
  .chapter { grid-template-columns: auto minmax(0, 1fr); gap: 2px 5px; padding-right: 5px; font-size: 12px; }
  .chapter > small { grid-column: 2; font-size: 11px; }
  .workbench { grid-template-columns: minmax(0, 1fr); gap: 9px; }
  .vessel { padding: 7px; }
  canvas { width: min(100%, max(320px, 49svh * 1.148)); }
  .instruments { padding: 10px; }
}
@media (max-width: 365px) {
  .edition { font-size: 20px; gap: 6px; }
  .edition i { margin-left: 2px; }
  .seal { width: 22px; height: 22px; }
  .back { font-size: 12px; }
  .chapter { padding-left: 17px; }
  .chapter::before { left: 5px; }
}