:root {
  --root: #2a1810;
  --root-2: #3a2418;
  --copper: #b87333;
  --verde: #4a7a62;
  --oil: #d4a030;
  --paper: #efe4d0;
  --ink: #f0e2c8;
  --mute: #a89078;
  --display: "Spectral", "Noto Serif SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 72px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--root);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.app-link { color: var(--oil); text-decoration: underline; text-underline-offset: 3px; }
button { font-family: inherit; cursor: pointer; }
label { display: block; font-size: 13px; color: var(--mute); }
input[type="range"] { width: min(280px, 100%); accent-color: var(--oil); }
.rooting {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 7;
  opacity: 0.16;
  background-image: url("images/texture.webp");
  background-size: 380px auto;
  mix-blend-mode: multiply;
}
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; z-index: 80; background: var(--oil); color: #111; padding: 8px; }
.bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 22px;
  background: rgba(42, 24, 16, 0.94);
  border-bottom: 3px solid var(--verde);
}
.brand { font-family: var(--display); font-weight: 700; }
.brand small {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--mute);
  font-weight: 400;
}
.nav-toggle {
  display: none;
  background: var(--copper);
  color: #fff;
  border: 0;
  padding: 6px 12px;
}
.nav-links { display: flex; gap: 14px; font-size: 14px; flex-wrap: wrap; }
.nav-links a { color: var(--mute); }
.nav-links a.is-active, .nav-links a:hover { color: var(--oil); }
.nav-links .live { background: var(--verde); color: #fff; padding: 6px 12px; }
.hero {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 28px;
  align-items: center;
  padding: 32px 28px 48px;
  min-height: calc(100vh - 58px);
}
.flask {
  margin: 0 auto;
  width: min(100%, 420px);
  overflow: hidden;
  border-radius: 46% 46% 48% 48% / 28% 28% 62% 62%;
  border: 8px solid var(--copper);
  box-shadow: 0 0 0 4px var(--verde), 0 24px 40px rgba(0, 0, 0, 0.4);
}
.flask img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; aspect-ratio: 3 / 4; }
.kicker {
  font-family: var(--mono);
  letter-spacing: 0.16em;
  font-size: 11px;
  color: var(--oil);
  margin: 0 0 12px;
}
h1, h2, h3 { font-family: var(--display); margin: 0 0 12px; line-height: 1.12; font-weight: 700; }
h1 { font-size: clamp(32px, 5vw, 58px); }
h2 { font-size: clamp(24px, 3vw, 36px); }
.lead { max-width: 42em; color: var(--mute); }
.clock {
  margin: 20px 0;
  padding: 14px 16px;
  background: var(--root-2);
  border-left: 8px solid var(--copper);
  max-width: 30em;
}
.clock.is-ok { border-left-color: var(--verde); }
.n { font-family: var(--display); font-size: 44px; margin: 0 0 6px; color: var(--oil); }
.n span { font-size: 18px; color: var(--mute); }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; align-items: center; padding: 10px 16px; border: 1px solid currentColor; font-size: 14px; }
.btn.oil { background: var(--oil); color: #2a1810; border-color: var(--oil); }
.btn.line { color: var(--ink); }
.w { width: min(1040px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0; }
#need, #still, #rules { background: var(--paper); color: #2a1810; }
#need .kicker, #still .kicker, #rules .kicker { color: #8a5018; }
#need .app-link, #still .app-link, #rules .app-link { color: #8a5018; }
.alt { background: var(--root-2); }
.tri { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin-top: 20px; }
.tri article { background: #fff8ee; color: #2a1810; padding: 16px; border-top: 5px solid var(--verde); }
.alt .tri article { background: #2a1810; color: var(--ink); }
.tri ul, .io ul, #rules ol { margin: 0; padding-left: 1.1em; }
.steps { padding-left: 1.2em; max-width: 48em; }
.steps li { margin-bottom: 10px; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.pair img { width: 100%; height: 240px; object-fit: cover; }
.pair figcaption { font-size: 13px; color: var(--mute); margin-top: 8px; }
#rules ol {
  background: #fff8ee;
  padding: 16px 16px 16px 36px;
  border-left: 8px solid var(--copper);
  max-width: 46em;
}
.io { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.io > div { background: #2a1810; padding: 16px; }
.url { margin-top: 18px; font-family: var(--mono); font-size: 13px; }
footer { padding: 20px 24px 40px; color: var(--mute); font-size: 13px; }
@media (max-width: 900px) {
  .hero, .tri, .pair, .io { grid-template-columns: 1fr; }
  .flask { width: min(72%, 280px); }
  .flask img { min-height: 280px; }
  .nav-toggle { display: inline-block; }
  .bar { flex-wrap: wrap; }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    background: #3a2418;
    padding: 12px;
  }
  .nav-links.open { display: flex; }
}