:root {
  --kraft: #e8dcc8;
  --seed: #3d5a3a;
  --tomato: #c44b3c;
  --umber: #4a3728;
  --cream: #f7f1e6;
  --ink: #2a2118;
  --seed-dim: #2f4630;
  --row: #c9bba3;
  --font-display: "Hanken Grotesk", system-ui, sans-serif;
  --font-body: "Vollkorn", Georgia, serif;
  --max: 68rem;
  --pad: clamp(1rem, 3vw, 2rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--ink);
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 47px,
      color-mix(in srgb, var(--row) 35%, transparent) 47px,
      color-mix(in srgb, var(--row) 35%, transparent) 48px
    ),
    linear-gradient(165deg, var(--cream) 0%, var(--kraft) 55%, #efe4d2 100%);
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--tomato);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--seed);
}

:focus-visible {
  outline: 2px solid var(--seed);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--umber);
  color: var(--cream);
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.shell {
  width: min(100% - 2 * var(--pad), var(--max));
  margin-inline: auto;
}

.mast {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--cream) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px dashed color-mix(in srgb, var(--umber) 28%, transparent);
}

.mast__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--umber);
  text-decoration: none;
}

.wordmark__mark {
  width: 1.35rem;
  height: 1.35rem;
  border: 2px solid var(--seed);
  border-radius: 0.15rem 0.15rem 0.55rem 0.15rem;
  background:
    linear-gradient(180deg, transparent 55%, var(--tomato) 55% 62%, transparent 62%),
    color-mix(in srgb, var(--kraft) 70%, white);
  position: relative;
}

.wordmark__mark::after {
  content: "";
  position: absolute;
  top: -0.2rem;
  right: -0.15rem;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--tomato);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.nav {
  display: flex;
  gap: 1.1rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
}

.nav a {
  color: var(--seed-dim);
  text-decoration: none;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--tomato);
}

.hero {
  position: relative;
  padding: clamp(2.5rem, 8vw, 5rem) 0 clamp(2rem, 5vw, 3.5rem);
  overflow: hidden;
  border-bottom: 2px dashed color-mix(in srgb, var(--umber) 35%, transparent);
}

.hero__flap {
  position: absolute;
  inset: 0 8% auto;
  height: 1.1rem;
  background:
    repeating-linear-gradient(
      90deg,
      var(--umber) 0 6px,
      transparent 6px 12px
    );
  opacity: 0.35;
  animation: flap-pulse 6s ease-in-out infinite;
}

.hero__tag {
  position: absolute;
  top: 1.5rem;
  right: max(var(--pad), calc((100% - var(--max)) / 2 + var(--pad)));
  width: 4.5rem;
  height: 4.5rem;
  background: var(--tomato);
  color: var(--cream);
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: grid;
  place-items: center;
  text-align: center;
  line-height: 1.2;
  transform: rotate(8deg);
  box-shadow: 2px 3px 0 color-mix(in srgb, var(--umber) 40%, transparent);
  animation: tag-settle 1.1s ease-out both;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 42rem;
}

.hero__brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 7vw, 4rem);
  letter-spacing: -0.03em;
  color: var(--seed);
  margin: 0 0 0.75rem;
  line-height: 1.05;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.6vw, 1.45rem);
  line-height: 1.35;
  color: var(--umber);
  margin: 0 0 1rem;
}

.hero__stand {
  margin: 0 0 1.25rem;
  color: var(--ink);
  max-width: 38rem;
}

.hero__stamp {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--seed);
  border: 1px solid var(--seed);
  padding: 0.35rem 0.7rem;
  background: color-mix(in srgb, var(--cream) 80%, white);
}

.panel {
  padding: clamp(2rem, 5vw, 3.25rem) 0;
}

.panel--row {
  background: color-mix(in srgb, var(--kraft) 55%, transparent);
  border-block: 1px solid color-mix(in srgb, var(--umber) 18%, transparent);
}

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--tomato);
  margin: 0 0 0.5rem;
}

.panel h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3vw, 1.85rem);
  color: var(--seed);
  margin: 0 0 1rem;
}

.lede {
  display: grid;
  gap: 0.85rem;
  max-width: 44rem;
}

.library {
  display: grid;
  gap: 1.25rem;
}

.entry {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.15rem 1.25rem;
  background: color-mix(in srgb, var(--cream) 88%, white);
  border: 1px solid color-mix(in srgb, var(--umber) 20%, transparent);
  border-left: 4px solid var(--seed);
  position: relative;
}

.entry::after {
  content: "";
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  width: 0.7rem;
  height: 0.7rem;
  background: var(--tomato);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  opacity: 0.85;
}

.entry__id {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--umber);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  margin: 0;
}

.entry h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  line-height: 1.3;
}

.entry h3 a {
  color: var(--seed);
  text-decoration: none;
}

.entry h3 a:hover {
  color: var(--tomato);
}

.entry p {
  margin: 0;
  font-size: 1.02rem;
}

.standards,
.not-list {
  margin: 0;
  padding-left: 1.15rem;
  max-width: 44rem;
}

.standards li,
.not-list li {
  margin-bottom: 0.65rem;
}

.faq {
  display: grid;
  gap: 0.65rem;
  max-width: 44rem;
}

.faq details {
  background: color-mix(in srgb, var(--cream) 90%, white);
  border: 1px solid color-mix(in srgb, var(--umber) 18%, transparent);
  padding: 0.75rem 1rem;
}

.faq summary {
  font-family: var(--font-display);
  font-weight: 650;
  cursor: pointer;
  color: var(--seed);
}

.faq p {
  margin: 0.65rem 0 0;
}

.support-block {
  max-width: 40rem;
  padding: 1.25rem;
  border: 2px dashed var(--seed);
  background: color-mix(in srgb, var(--kraft) 40%, var(--cream));
}

.article__head {
  padding: clamp(2rem, 5vw, 3rem) 0 0;
}

.article__head h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.5vw, 2.15rem);
  color: var(--seed);
  margin: 0 0 0.75rem;
  line-height: 1.2;
}

.article__meta {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--umber);
  margin: 0;
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--seed);
  margin: 1.75rem 0 0.65rem;
}

.prose p,
.prose li {
  margin-top: 0;
  margin-bottom: 0.85rem;
}

.prose ul {
  padding-left: 1.15rem;
}

.backlink {
  font-family: var(--font-display);
  font-weight: 650;
  display: inline-block;
  margin-top: 1.5rem;
}

.colophon {
  margin-top: 2rem;
  padding: 1.5rem 0 2.5rem;
  border-top: 2px dashed color-mix(in srgb, var(--umber) 30%, transparent);
  background: color-mix(in srgb, var(--umber) 92%, black);
  color: var(--cream);
}

.colophon a {
  color: color-mix(in srgb, var(--kraft) 80%, white);
}

.colophon__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.15rem;
  font-family: var(--font-display);
  font-size: 0.88rem;
  margin-bottom: 0.85rem;
}

.colophon__note {
  margin: 0;
  font-size: 0.95rem;
  opacity: 0.9;
}

.page-404 {
  padding: 4rem 0;
  text-align: center;
}

.page-404 h1 {
  font-family: var(--font-display);
  color: var(--seed);
}

@keyframes flap-pulse {
  0%,
  100% {
    opacity: 0.28;
  }
  50% {
    opacity: 0.48;
  }
}

@keyframes tag-settle {
  from {
    transform: translateY(-1.2rem) rotate(18deg);
    opacity: 0;
  }
  to {
    transform: translateY(0) rotate(8deg);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero__flap,
  .hero__tag {
    animation: none;
  }
}

@media (max-width: 640px) {
  .entry {
    grid-template-columns: 1fr;
  }

  .entry__id {
    writing-mode: horizontal-tb;
    transform: none;
  }

  .hero__tag {
    position: static;
    margin: 0 0 1rem;
    transform: rotate(4deg);
  }
}