:root {
  color-scheme: light;
  --bg: #f5f0e6;
  --paper: #fffaf0;
  --fg: #2b251d;
  --muted: #62574a;
  --accent: #a23026;
  --accent-dark: #81241e;
  --line: #d6c9b6;
  --display: "Songti SC", "Noto Serif CJK SC", "SimSun", serif;
  --mono: ui-monospace, "SFMono-Regular", Consolas, monospace;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.75 system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
}
h1, h2, h3, p, figure, dl, dd { margin: 0; }
p + p { margin-top: .85em; }
a { color: var(--accent); text-underline-offset: .24em; }
button { font: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
[hidden] { display: none !important; }
.skip-link { position: absolute; top: -6rem; left: 1rem; padding: .5rem 1rem; background: var(--paper); z-index: 2; }
.skip-link:focus { top: 1rem; }
.shell { width: min(1120px, calc(100% - 72px)); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner, .footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 30px;
}
.header-inner { min-height: 78px; padding-block: 12px; }
.brand, .header-inner nav a {
  color: var(--fg);
  text-decoration: none;
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 17px; font-weight: 750; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--accent);
  border-radius: 4px;
  color: var(--accent);
  font-family: var(--display);
}
.header-inner nav { display: flex; flex-wrap: wrap; align-items: center; gap: 3px 19px; }
.header-inner nav a { display: inline-block; padding: 5px 0; font-size: 14px; }
.header-inner nav a:hover { color: var(--accent); text-decoration: underline; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.06fr);
  align-items: center;
  gap: clamp(24px, 5vw, 74px);
  padding-block: 54px 64px;
}
.eyebrow, .index, .art-label {
  font: 700 12px/1.5 var(--mono);
  letter-spacing: .105em;
  color: var(--accent);
}
.eyebrow { display: flex; align-items: center; gap: 9px; }
.eyebrow span, .figure-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; }
.hero h1 { font: 800 clamp(70px, 9.6vw, 125px)/1.13 var(--display); letter-spacing: -.045em; margin: 15px 0 18px; }
.tagline { font: 750 clamp(27px, 3.25vw, 42px)/1.4 var(--display); color: var(--accent); }
.lead { max-width: 28em; margin-top: 18px; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; margin-top: 22px; }
.button {
  display: inline-flex;
  align-items: center;
  gap: .65em;
  border-radius: 5px;
  background: var(--accent);
  color: #fff9ee;
  padding: 9px 16px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
}
.button:hover { background: var(--accent-dark); }
.text-link { display: inline-block; padding-block: 5px; font-weight: 650; overflow-wrap: anywhere; }
.hero-art {
  min-width: 0;
  padding: 15px 17px 13px;
  border: 1px solid var(--line);
  background: #eae1d1;
  border-radius: 6px;
}
.art-label { display: flex; justify-content: space-between; gap: 10px; }
.screens {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8%;
  padding: 22px 8% 24px;
  background: repeating-linear-gradient(0deg, transparent, transparent 25px, #7e573319 26px);
}
.screen {
  display: block;
  width: 45%;
  max-width: 184px;
  height: auto;
  border-radius: 11% / 5%;
  border: clamp(3px, .45vw, 6px) solid #343028;
  background: var(--paper);
  box-shadow: 0 9px 16px #30221430;
}
.screen-straw { transform: rotate(-5deg); }
.screen-ledger { transform: rotate(5deg); }
.hero-art figcaption {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}
.section-row {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(150px, 1fr) minmax(0, 3.2fr);
  align-items: start;
  gap: 24px 40px;
  padding-block: 36px;
  scroll-margin-top: 20px;
}
.section-title h2 { font: 750 clamp(25px, 3vw, 35px)/1.35 var(--display); margin-top: 7px; }
.section-content { max-width: 790px; }
.section-content h3 { font-size: 20px; line-height: 1.45; }
.section-content .intro { font-size: 19px; font-weight: 700; }
.project-heading { display: flex; align-items: center; gap: 14px; }
.project-heading img { border-radius: 14px; }
.muted { color: var(--muted); font-size: 14px; }
.features, .notes { display: grid; gap: 20px; }
.features { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 24px; }
.features div { border-left: 2px solid var(--line); padding-left: 12px; }
.features dt { font-weight: 750; }
.features dd, .notes p { color: var(--muted); margin-top: 5px; }
.notes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.notes article { padding: 15px 18px; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); }
.notes h3, .lab-copy h3 { margin-top: 6px; }
.lab {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(145px, .8fr);
  align-items: center;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 20px clamp(16px, 3vw, 35px);
  background: #eee3cf;
}
.lab-copy p { color: var(--muted); margin-top: 7px; }
.lab-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 12px; }
.lab-controls output { font-weight: 700; font-variant-numeric: tabular-nums; }
.lab-controls button {
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  border: 1px solid currentColor;
  border-radius: 4px;
  padding: 2px 9px;
  font-size: 14px;
}
.doll-stage { display: grid; place-items: center; }
.doll-stage button { max-width: 100%; border: 0; border-radius: 12px; padding: 0; background: transparent; cursor: pointer; }
.doll-stage button:disabled { cursor: default; }
.doll-stage svg { display: block; max-width: 100%; height: auto; transform-origin: 50% 85%; }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner {
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  min-height: 84px;
  padding-block: 16px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}
.footer-inner p { margin: 0; }
.footer-inner .sep { margin-inline: .6em; opacity: .5; }
.beian a { color: var(--muted); text-decoration: none; }
.beian a:hover { color: var(--accent); text-decoration: underline; }
.document { width: min(680px, calc(100% - 40px)); margin-inline: auto; padding: 35px 0 52px; }
.document h1 { font: 750 clamp(32px, 6vw, 49px)/1.3 var(--display); margin: 16px 0 7px; }
.document h2 { font-size: 22px; line-height: 1.4; margin: 27px 0 8px; }
.document p + p { margin-top: 12px; }
.document ul, .document ol { padding-left: 1.35em; }
.document hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0 14px; }
.document .muted + p { margin-top: 19px; }
.document details { border-bottom: 1px solid var(--line); padding: 10px 0; }
.document summary { cursor: pointer; font-weight: 700; }
.document details p { margin: 6px 0 0; }
@media (max-width: 780px) {
  .shell { width: calc(100% - 44px); }
  .header-inner { flex-wrap: wrap; }
  .hero { padding-block: 40px 48px; }
  .section-row { grid-template-columns: 138px minmax(0, 1fr); column-gap: 18px; }
  .features { grid-template-columns: 1fr; gap: 12px; }
}
@media (max-width: 580px) {
  .shell { width: calc(100% - 36px); }
  .header-inner nav { gap: 3px 15px; }
  .hero, .section-row, .notes { grid-template-columns: 1fr; }
  .hero { gap: 27px; padding-block: 30px 37px; }
  .hero h1 { margin-block: 9px 12px; }
  .screen { max-width: 156px; }
  .section-row { gap: 14px; padding-block: 26px; }
  .lab { grid-template-columns: minmax(0, 1fr) minmax(100px, .72fr); }
}
@media (max-width: 420px) {
  .header-inner nav {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}