:root {
  --rice: #f6eee4;
  --pink: #e8c4c8;
  --ink: #1c1814;
  --mute: #7a6e64;
  --seal: #1c1814;
  --ok: #4a6b48;
  --warn: #8a3a32;
  --display: "Unna", "Songti SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", sans-serif;
  --mono: "Cousine", 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(--ink);
  background:
    radial-gradient(800px 360px at 90% 0, rgba(232, 196, 200, 0.35), transparent 55%),
    var(--rice);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.72;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.app-link {
  color: var(--warn);
  text-decoration: underline;
  text-underline-offset: 3px;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.rice-paper {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 1;
  opacity: 0.34;
  background-image: url("images/texture.webp");
  background-size: 240px auto;
  mix-blend-mode: multiply;
}

.skip {
  position: absolute;
  left: -999px;
}

.skip:focus {
  left: 12px;
  top: 8px;
  z-index: 40;
  background: var(--ink);
  color: #fff;
  padding: 6px 10px;
}

.formula-rail {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 22px;
  background: rgba(246, 238, 228, 0.94);
  border-bottom: 1px solid var(--ink);
  backdrop-filter: blur(8px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: 30px;
}

.brand small {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--mute);
  letter-spacing: 0.14em;
}

.ink-seal {
  width: 22px;
  height: 8px;
  background: var(--ink);
  box-shadow: 0 10px 0 var(--pink);
}

.strip-nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  font-size: 14px;
}

.strip-nav a.is-active {
  color: var(--warn);
  box-shadow: inset 0 -2px 0 var(--warn);
}

.strip-nav .live {
  background: var(--ink);
  color: var(--rice);
  padding: 4px 10px;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  background: var(--ink);
  color: #fff;
  border: 0;
  width: 42px;
  height: 42px;
  font-family: var(--display);
  font-size: 20px;
}

.hero,
.bench {
  position: relative;
  z-index: 2;
  padding: 36px 40px 28px;
  max-width: 1040px;
  margin: 0 auto;
}

.blotter-lock {
  background:
    repeating-linear-gradient(90deg, transparent 0 18px, rgba(28, 24, 20, 0.04) 18px 19px);
}

.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--warn);
  margin: 0 0 10px;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.14;
}

h1 {
  font-size: clamp(2.2rem, 4.4vw, 3.3rem);
  margin: 0 0 16px;
}

h2 {
  font-size: clamp(1.35rem, 2.3vw, 1.85rem);
  margin: 0 0 8px;
}

h3 {
  font-size: 1.08rem;
  margin: 0 0 8px;
  color: var(--warn);
}

.lead {
  max-width: 68ch;
}

.ifra-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 0;
  margin: 0 0 18px;
}

.strip {
  background: #fff;
  border: 1px solid var(--ink);
  padding: 28px 10px 12px;
  font-family: var(--mono);
  font-size: 12px;
  position: relative;
}

.strip::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--pink);
}

.strip small {
  display: block;
  margin-top: 6px;
  color: var(--mute);
}

.strip.active::before {
  background: var(--ink);
}

.strip.warn::before {
  background: var(--warn);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}

.chip {
  font-family: var(--mono);
  font-size: 12px;
  border: 1px solid rgba(28, 24, 20, 0.35);
  padding: 3px 10px;
}

.chip.warn {
  border-color: var(--warn);
  color: var(--warn);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 8px 0 22px;
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  font-size: 14px;
}

.btn-fill {
  background: var(--ink);
  color: var(--rice);
}

.btn-ghost {
  border: 1px solid var(--ink);
}

figure {
  margin: 0;
}

figcaption {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--mute);
  margin-top: 8px;
}

.bench-head {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  margin-bottom: 22px;
}

.bench-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--warn);
  margin: 0;
}

.three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.paper-card {
  background: #fff;
  padding: 16px 18px;
  border-top: 3px solid var(--ink);
}

.paper-card ul {
  margin: 0;
  padding-left: 18px;
}

.paper-card p {
  margin: 0;
}

.gate-list {
  margin: 0;
  padding-left: 20px;
}

.gate-list li {
  margin-bottom: 10px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 140px;
  gap: 24px;
  align-items: start;
}

.hex-label {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--warn);
  margin-bottom: 8px;
}

.hex-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

#hexyl {
  flex: 1;
  accent-color: var(--warn);
}

#hexyl-val {
  font-family: var(--mono);
  font-size: 28px;
  min-width: 3.2ch;
}

.tri-state {
  font-family: var(--mono);
  font-size: 14px;
}

.tri-state.late {
  color: var(--warn);
}

.tri-state.ok {
  color: var(--ok);
}

.hint {
  color: var(--mute);
  font-size: 14px;
}

.seal-bay {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.version-tape {
  width: 28px;
  height: 200px;
  background: var(--pink);
  box-shadow: inset 0 0 0 1px var(--ink);
}

.version-tape.sealed {
  background:
    repeating-linear-gradient(180deg, var(--ink) 0 10px, var(--pink) 10px 22px);
}

.version-tape.open {
  background: var(--ok);
  box-shadow: none;
}

.gardenia-pink {
  color: var(--pink);
}

.drop-scale {
  font-family: var(--mono);
}

.allergen-bar {
  list-style: none;
  padding: 0;
  margin: 0;
}

.allergen-bar li {
  padding: 10px 0 10px 16px;
  border-left: 3px solid var(--ink);
  margin-bottom: 8px;
  background: rgba(28, 24, 20, 0.04);
}

.bound-list {
  columns: 2;
  margin: 0;
  padding-left: 18px;
}

.roll {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.roll th,
.roll td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid rgba(28, 24, 20, 0.16);
}

.roll th {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--warn);
}

.foot {
  position: relative;
  z-index: 2;
  padding: 28px 40px 48px;
  max-width: 1040px;
  margin: 0 auto;
  color: var(--mute);
  font-size: 14px;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .strip-nav {
    display: none;
    position: absolute;
    top: 58px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #f6eee4;
    padding: 12px 18px 18px;
    gap: 10px;
    border-bottom: 1px solid var(--ink);
  }

  .strip-nav.open {
    display: flex;
  }

  .ifra-grid,
  .three,
  .bench-head,
  .split,
  .bound-list {
    grid-template-columns: 1fr;
    columns: 1;
  }

  .hero,
  .bench,
  .foot {
    padding-left: 18px;
    padding-right: 18px;
  }
}