:root {
  --paper: #f7f1e4;
  --ink: #1a1410;
  --proof: #c41e1e;
  --mute: #6a5a4a;
  --display: "Newsreader", "Noto Serif SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 70px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); line-height: 1.7; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.app-link { color: var(--proof); text-decoration: underline; text-underline-offset: 3px; }
button { font-family: inherit; cursor: pointer; }
.paper-grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 6;
  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(--proof); color: #fff; padding: 8px; }
.proof-bar, .pf-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 22px;
  background: rgba(247, 241, 228, 0.94);
  border-bottom: 3px solid var(--proof);
}
.brand, .mark { font-family: var(--display); font-size: 24px; }
.brand small, .mark small { display: block; font-family: var(--mono); font-size: 10px; color: var(--mute); letter-spacing: 0.14em; }
.nav-toggle { display: none; background: var(--proof); color: #fff; border: 0; padding: 7px 12px; }
.proof-links, .pf-links { display: flex; gap: 14px; font-size: 14px; flex-wrap: wrap; align-items: center; }
.proof-links a, .pf-links a { color: var(--mute); }
.proof-links a.is-active, .proof-links a:hover, .pf-links a.is-active, .pf-links a:hover { color: var(--proof); }
.proof-links .live, .pf-links .live { background: var(--proof); color: #fff; padding: 6px 12px; font-weight: 700; }
.desk, .sheet { display: grid; grid-template-columns: 1.05fr 0.95fr; min-height: 84vh; }
.sheet > img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
.col { padding: 40px 32px; align-self: center; }
.pf-box { margin: 16px 0; padding: 14px; background: #fff; border-left: 8px solid var(--proof); }
.pf-btns { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.pf-btns button { border: 1px solid var(--proof); background: #fff; padding: 8px 12px; }
.pf-btns button.on { background: var(--proof); color: #fff; }
.desk figure { margin: 0; }
.desk img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
.sheet { padding: 40px 32px; align-self: center; }
.kicker { font-family: var(--mono); letter-spacing: 0.16em; font-size: 11px; color: var(--proof); margin: 0 0 10px; }
h1, h2, h3 { font-family: var(--display); margin: 0 0 10px; line-height: 1.12; font-weight: 700; }
h1 { font-size: clamp(30px, 4.6vw, 48px); }
.lead { color: var(--mute); }
.clip {
  margin: 16px 0;
  padding: 16px 16px 16px 110px;
  position: relative;
  background: #fff;
  border: 1px solid #d8ccb4;
  box-shadow: 4px 6px 0 rgba(196, 30, 30, 0.12);
}
.seal {
  position: absolute;
  left: 10px;
  top: 16px;
  width: 86px;
  height: 86px;
  object-fit: cover;
  transform: rotate(-8deg);
}
.n { font-family: var(--display); font-size: 36px; margin: 0 0 6px; color: var(--proof); }
.clip button { margin-top: 8px; background: var(--proof); color: #fff; border: 0; padding: 8px 14px; font-weight: 700; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; padding: 10px 16px; border: 1px solid currentColor; }
.btn.fill { background: var(--proof); color: #fff; border-color: var(--proof); font-weight: 700; }
.w { width: min(1080px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0; }
.ink { background: #1a1410; color: var(--paper); }
.ink .kicker, .ink .app-link { color: #e07070; }
.tri { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin-top: 16px; }
.tri article { background: #fff; padding: 16px; }
.ink .tri article { background: #2a221c; }
.tri ul, .io ul, #rules ol { margin: 0; padding-left: 1.1em; }
.steps { padding-left: 1.2em; max-width: 46em; }
figure { margin: 24px 0 0; }
figure img { width: 100%; max-height: 280px; object-fit: cover; }
figcaption { font-size: 13px; color: var(--mute); margin-top: 8px; }
.ink figcaption { color: #c4b49a; }
.io { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.io > div { background: #2a221c; padding: 16px; }
.url { margin-top: 16px; font-family: var(--mono); font-size: 13px; }
footer { padding: 20px 24px 40px; color: var(--mute); font-size: 13px; }
@media (max-width: 900px) {
  .nav-toggle { display: inline-block; }
  .proof-bar, .pf-bar { flex-wrap: wrap; position: relative; }
  .proof-links, .pf-links { display: none; width: 100%; flex-direction: column; background: var(--paper); padding: 12px; }
  .proof-links.open, .pf-links.open { display: flex; }
  .desk, .sheet, .tri, .io { grid-template-columns: 1fr; }
  .clip { padding: 100px 16px 16px; }
  .seal { left: 16px; top: 8px; }
}