:root {
  --hide: #6b3f2a;
  --rust: #b5522a;
  --mud: #2c2a27;
  --dust: #4a4540;
  --paper: #efe4d4;
  --mute: #a09080;
  --ok: #6a8f5a;
  --warn: #c45a28;
  --serif: "Noto Serif SC", "Songti 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: 76px; }
body {
  margin: 0;
  color: var(--paper);
  background: var(--mud);
  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: #e0b08a; text-decoration: underline; text-underline-offset: 3px; }
button { font-family: inherit; cursor: pointer; }
code { font-family: var(--mono); background: rgba(181, 82, 42, 0.2); padding: 0.05em 0.35em; }

.hide-grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 40;
  opacity: 0.16;
  background-image: url("images/texture.webp");
  background-size: 420px auto;
  mix-blend-mode: multiply;
}
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; z-index: 70; background: var(--rust); color: var(--paper); padding: 8px 12px; }

.tag-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 22px;
  background: rgba(44, 42, 39, 0.94);
  border-bottom: 1px solid rgba(181, 82, 42, 0.45);
}
.ear { display: flex; align-items: center; gap: 10px; font-family: var(--serif); font-size: 22px; }
.ear small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; color: var(--mute); }
.ear-num {
  width: 36px;
  height: 28px;
  display: grid;
  place-items: center;
  background: #d8c4a4;
  color: var(--mud);
  font-family: var(--mono);
  font-size: 14px;
  clip-path: polygon(0 0, 86% 0, 100% 50%, 86% 100%, 0 100%);
}
.nav-toggle { display: none; background: var(--rust); color: var(--paper); border: 0; padding: 10px 14px; font-size: 16px; }
.tag-links { display: flex; gap: 16px; align-items: center; font-size: 14px; }
.tag-links a { color: var(--mute); }
.tag-links a.is-active, .tag-links a:hover { color: #e0b08a; }
.tag-links .live { background: var(--rust); color: var(--paper); padding: 8px 12px; }

.glass { position: relative; min-height: 100vh; display: grid; align-items: center; }
.glass img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: saturate(0.85); }
.glass::before {
  content: "";
  position: absolute;
  inset: 8vh auto 8vh 6vw;
  width: min(560px, 86vw);
  background: rgba(44, 42, 39, 0.78);
  clip-path: polygon(8% 0, 92% 0, 100% 50%, 92% 100%, 8% 100%, 0 50%);
  z-index: 1;
}
.glass-copy { position: relative; z-index: 2; padding: 10vh 8vw; max-width: 640px; }
.kicker { font-family: var(--mono); letter-spacing: 0.16em; font-size: 12px; color: #e0b08a; margin: 0 0 10px; }
h1, h2, h3 { font-family: var(--serif); margin: 0 0 12px; line-height: 1.08; }
h1 { font-size: clamp(40px, 6vw, 76px); }
h2 { font-size: clamp(28px, 3.5vw, 42px); }
h3 { font-size: 22px; }
.lead { font-size: 17px; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 18px 0; }
.chips li { font-family: var(--mono); font-size: 12px; border: 1px solid rgba(181, 82, 42, 0.5); padding: 4px 10px; }
.acts { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-flex; align-items: center; padding: 12px 16px; border: 2px solid currentColor; font-size: 15px; }
.fill { background: var(--rust); border-color: var(--rust); color: var(--paper); }
.ghost { background: transparent; }

.pen { width: min(1060px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0; }
.lot { background: #352f2b; }
.mud { background: var(--mud); }
.quiet { color: var(--mute); max-width: 44em; }

.bulb-row { display: grid; grid-template-columns: 1fr 28px 1fr; grid-template-rows: auto auto; gap: 12px; margin-top: 28px; }
.bulb { background: #4a3b32; padding: 20px; }
.top-bulb { clip-path: polygon(10% 0, 90% 0, 100% 100%, 0 100%); }
.bulb:not(.top-bulb):not(.stone-bulb) { clip-path: polygon(0 0, 100% 0, 90% 100%, 10% 100%); }
.stone-bulb { grid-column: 1 / -1; border-top: 8px dashed #8a7a6a; }
.neck { background: linear-gradient(180deg, var(--rust), #8a7a6a); }
.bulb span { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; color: #e0b08a; }
.bulb ul { margin: 8px 0 0; padding-left: 1.1em; }

.card-row { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 28px; align-items: center; margin: 44px 0; }
.card-row.flip { grid-template-columns: 0.9fr 1.1fr; }
.card-row.flip figure { order: 2; }
.n { font-family: var(--mono); color: var(--rust); letter-spacing: 0.12em; font-size: 12px; display: block; margin-bottom: 8px; }
figure { margin: 0; }
figure img { width: 100%; height: 270px; object-fit: cover; box-shadow: 12px 12px 0 rgba(107, 63, 42, 0.45); }
figcaption { margin-top: 8px; font-size: 13px; color: var(--mute); }

.sand-demo { margin-top: 16px; padding: 14px; background: #241f1c; border: 2px solid var(--hide); }
.sand-label { margin: 0 0 10px; font-family: var(--mono); font-size: 12px; color: var(--mute); }
.sand-row { display: grid; grid-template-columns: 40px 1fr 64px; gap: 10px; align-items: center; }
.sand-row input { width: 100%; accent-color: var(--rust); }
.sand-row strong { font-family: var(--mono); font-size: 22px; color: #e0b08a; }
.stone-row { display: flex; gap: 10px; align-items: center; margin-top: 10px; }
.stone-row input { width: 20px; height: 20px; accent-color: var(--warn); }
.sand-state { margin: 10px 0 0; font-family: var(--mono); font-size: 14px; }
.sand-state.ok { color: var(--ok); }
.sand-state.warn { color: #e08a5a; }

.mods { list-style: none; margin: 28px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.mods li { background: #4a3b32; padding: 18px; }
.mods p { margin: 0; color: var(--mute); font-size: 14px; }

.vals { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
.vals article { padding: 18px; background: #4a3b32; }
.vals p { margin: 0; color: var(--mute); }

.laws { max-width: 46em; font-size: 17px; }
.io { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 18px; }
.io ul { margin: 0; padding-left: 1.1em; }

footer { background: #1c1916; color: var(--mute); border-top: 8px solid var(--hide); }
.foot { display: flex; justify-content: space-between; gap: 12px; font-size: 13px; padding-top: 24px; padding-bottom: 24px; }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .tag-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 12px 16px 18px;
    background: var(--mud);
  }
  .tag-links.open { display: flex; }
  .glass::before { inset: auto 4vw 4vh 4vw; width: auto; height: 72%; clip-path: none; }
  .glass-copy { align-self: end; }
  .pen { width: min(1060px, calc(100% - 24px)); padding: 48px 0; }
  .bulb-row, .card-row, .card-row.flip, .mods, .vals, .io, .foot { grid-template-columns: 1fr; display: grid; }
  .neck { display: none; }
  .card-row.flip figure { order: 0; }
  h1 { font-size: 36px; }
  figure img { height: 200px; box-shadow: 6px 6px 0 rgba(107, 63, 42, 0.45); }
  .sand-row { grid-template-columns: 1fr; }
  .btn { min-height: 44px; }
}