:root {
  --bark: #2b1c12;
  --sap: #f3e6c8;
  --amber: #e2b15a;
  --rot: #3d5c5a;
  --ink: #24170f;
  --mute: #8a7358;
  --display: "Source Serif 4", "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: 24px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--sap);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  display: grid;
  grid-template-columns: 220px 1fr;
}
.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 3;
  opacity: 0.16;
  background-image: url("images/texture.webp");
  background-size: 420px auto;
  mix-blend-mode: multiply;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.app-link { color: #8a4b12; text-decoration: underline; text-underline-offset: 3px; }
button { font-family: inherit; cursor: pointer; }
code { font-family: var(--mono); background: #ead7b0; padding: 0.05em 0.35em; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 230px; top: 10px; z-index: 80; background: var(--amber); padding: 8px; }
.mill-rail {
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--bark);
  color: var(--sap);
  padding: 28px 18px;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.logmark { font-family: var(--display); font-size: 28px; font-weight: 700; }
.logmark small {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--amber);
  font-weight: 400;
  margin-top: 6px;
}
.mill-links { display: flex; flex-direction: column; gap: 12px; font-size: 15px; }
.mill-links a.is-active { color: var(--amber); }
.mill-links .live {
  margin-top: 12px;
  background: var(--amber);
  color: var(--bark);
  padding: 8px 10px;
  font-weight: 700;
  text-align: center;
}
.nav-toggle { display: none; background: transparent; color: var(--amber); border: 1px solid var(--amber); padding: 6px 12px; }
.deck { position: relative; }
.deck > img { width: 100%; height: 92vh; object-fit: cover; }
.tag {
  position: absolute;
  left: 40px;
  bottom: 36px;
  width: min(520px, 86%);
  background: rgba(243, 230, 200, 0.93);
  padding: 28px;
  border-top: 10px solid var(--bark);
}
.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: #8a4b12;
  margin: 0 0 8px;
}
h1, h2, h3 { font-family: var(--display); margin: 0 0 12px; line-height: 1.18; }
h1 { font-size: clamp(30px, 4.6vw, 48px); }
h2 { font-size: clamp(24px, 3vw, 36px); }
.quiet { color: var(--mute); }
.yield {
  margin: 16px 0 10px;
  padding: 12px 14px;
  background: var(--bark);
  color: var(--sap);
}
.yield span { font-family: var(--mono); font-size: 12px; color: var(--amber); }
.yield strong { display: block; font-size: 28px; margin: 4px 0; }
.yield p { margin: 0; color: #d8c4a4; font-size: 14px; }
.kerf-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.kerf-btns button {
  background: #efe0be;
  border: 1px solid #c9ae7a;
  padding: 8px 12px;
}
.kerf-btns button.on { background: var(--bark); color: var(--amber); border-color: var(--bark); }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.btn { display: inline-block; padding: 10px 16px; border: 1px solid var(--bark); font-weight: 700; }
.btn.fill { background: var(--bark); color: var(--sap); }
.btn.ghost { background: transparent; }
.wrap { width: min(1000px, calc(100% - 48px)); margin: 0 auto; padding: 72px 0; }
.bark { background: #e7d5b0; }
.tri, .io, .pair, .rings { display: grid; gap: 16px; }
.tri { grid-template-columns: repeat(3, 1fr); }
.io, .pair { grid-template-columns: 1fr 1fr; }
.rings { grid-template-columns: repeat(3, 1fr); margin-bottom: 36px; }
.tri article, .io article, .rings article {
  background: #fbf3de;
  padding: 18px;
  border-left: 6px solid var(--bark);
}
.tri .warn { border-left-color: var(--rot); background: #dce6e2; }
.rings span { font-family: var(--mono); font-size: 12px; color: #8a4b12; }
ul { margin: 0; padding-left: 1.1em; }
li + li { margin-top: 6px; }
figure { margin: 0; }
figcaption { color: var(--mute); font-size: 13px; margin-top: 8px; }
.bound { max-width: 720px; }
footer {
  padding: 24px 24px 48px;
  border-top: 8px solid var(--bark);
  display: flex;
  justify-content: space-between;
  color: var(--mute);
  font-size: 14px;
}
@media (max-width: 900px) {
  body { grid-template-columns: 1fr; }
  .mill-rail {
    position: sticky;
    top: 0;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    gap: 8px;
  }
  .nav-toggle { display: inline-block; }
  .mill-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }
  .mill-links.open { display: flex; }
  .deck > img { height: 42vh; }
  .tag { position: relative; left: 0; bottom: 0; width: auto; }
  .tri, .io, .pair, .rings { grid-template-columns: 1fr; }
  footer { flex-direction: column; gap: 8px; }
}