@import url('https://fonts.googleapis.com/css2?family=Spectral:ital,wght@0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --sheet: #F4F1E8;
  --sunk: #EAE6D9;
  --ink: #1C1F1A;
  --ink-soft: #5A6152;
  --ink-faint: #8A8A7A;
  --rule: #C8C3B2;
  --specimen: #2F4A32;
  --stamp: #9C3B28;
  --font-display: "Spectral", Georgia, "Times New Roman", serif;
  --font-data: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --sheet: #121410;
    --sunk: #1B1F19;
    --ink: #E8E6DD;
    --ink-soft: #99A08F;
    --rule: #2E342A;
    --specimen: #7FA882;
    --stamp: #D4705C;
    color-scheme: dark;
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-display);
  background: var(--sheet);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-bottom: 104px;
}

@media (max-width: 560px) {
  body { padding-bottom: 0; }
}

::selection {
  background: var(--stamp);
  color: #fff;
}

a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

/* Header — matches SheetHeader */
.site-head {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--sheet);
  border-bottom: 1px solid var(--rule);
  padding: 0 max(16px, env(safe-area-inset-left, 0px));
}

.site-head .wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 13px;
  min-height: 58px;
}

.mark {
  flex: none;
  width: 22px;
  height: 30px;
  display: block;
}

.mark path { fill: var(--specimen); }
.mark line { stroke: var(--sheet); stroke-width: 1.1; }

.who {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.who b {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink);
}

.who span {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.head-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}

.head-nav a {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
}

.head-nav a:hover { color: var(--ink); }

.head-stamp {
  flex: none;
  font-family: var(--font-data);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--stamp);
  border: 1px solid var(--stamp);
  border-radius: 2px;
  padding: 4px 7px;
  transform: rotate(-4deg);
  line-height: 1.25;
  text-align: center;
  margin-left: 16px;
}

.head-stamp span {
  display: block;
  font-style: normal;
  font-variant-numeric: tabular-nums;
  color: var(--stamp);
  font-family: var(--font-data);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
}

@media (max-width: 560px) {
  .head-nav { display: none; }
  .who span { display: none; }
}

/* Case study header */
header.case {
  padding: 48px 0 56px;
}

header.case .back {
  font-size: 14px;
  color: var(--ink-soft);
  transition: color 0.2s;
}

header.case .back:hover { color: var(--ink); }

.kicker {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--stamp);
  margin-top: 24px;
  margin-bottom: 16px;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.5vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 760px;
}

.lede {
  font-size: 17px;
  color: var(--ink-soft);
  margin-top: 20px;
  max-width: 560px;
  line-height: 1.6;
}

/* Hero image */
.hero {
  background: var(--sunk);
  overflow: hidden;
  margin-bottom: 64px;
}

/* Content sections */
.section {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  padding: 0 0 56px;
}

.section .label {
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--stamp);
  margin: 0;
}

.section .body {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 620px;
  line-height: 1.65;
}

.section .body p { margin-bottom: 1em; }
.section .body p:last-child { margin-bottom: 0; }
.section .body strong { color: var(--ink); font-weight: 600; }
.section .body ul { list-style: none; }

.section .body li {
  padding-left: 18px;
  position: relative;
  margin-bottom: 6px;
  color: var(--ink-soft);
}

.section .body li::before {
  content: "\2014";
  position: absolute;
  left: 0;
  color: var(--rule);
}

.section .body a {
  border-bottom: 1px solid var(--ink);
  transition: color 0.2s;
}

.section .body a:hover { color: var(--stamp); border-color: var(--stamp); }

/* Gallery */
.gallery {
  padding: 16px 0 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px 32px;
}

.gallery figure.full { grid-column: span 2; }

.gallery .frame {
  background: var(--sunk);
  overflow: hidden;
}

.gallery figcaption {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--ink-soft);
  margin-top: 10px;
  letter-spacing: .02em;
}

/* Previous/next navigation */
.pn {
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.pn a {
  padding: 40px 0;
  transition: background 0.2s;
}

.pn a:hover { background: var(--sunk); }
.pn a:last-child { text-align: right; }

.pn .dir {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--ink-soft);
  letter-spacing: .04em;
}

.pn .name {
  font-size: 16px;
  font-weight: 600;
  margin-top: 4px;
}

/* Footer — matches SheetFooter */
.site-foot {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  background: var(--sheet);
  border-top: 1px solid var(--rule);
  padding: 0 max(16px, env(safe-area-inset-left, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.site-foot .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 22px;
  padding-block: 11px;
}

.fld {
  display: flex;
  align-items: baseline;
  gap: 7px;
  min-width: 0;
}

.fld-key {
  font-family: var(--font-data);
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  flex: none;
}

.fld-val {
  font-family: var(--font-data);
  font-size: 11.5px;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  min-width: 0;
}

.binom {
  margin-left: auto;
  font-size: 13px;
  color: var(--ink-soft);
  min-width: 0;
}

.binom i {
  font-style: italic;
  color: var(--specimen);
}

@media (max-width: 720px) {
  .binom { margin-left: 0; width: 100%; font-size: 12px; }
  .site-foot .wrap { gap: 3px 16px; }
}

@media (max-width: 560px) {
  .site-foot { position: static; padding-bottom: 0; }
  body { padding-bottom: 0; }
}

/* Responsive */
@media (max-width: 760px) {
  .wrap { padding: 0 20px; }
  .section { grid-template-columns: 1fr; gap: 12px; }
  .gallery { grid-template-columns: 1fr; }
  .gallery figure.full { grid-column: span 1; }
  header.case { padding: 36px 0 40px; }
}