:root {
  --tissue: #DCCBA1;
  --tissue-deep: #C9B47F;
  --muslin: #F5EEDC;
  --ink: #1E2230;
  --ink-soft: #464B5C;
  --chalk: #3F63B0;
  --pin: #B83A73;
  --steel: #8E979C;

  --display: "Gloock", "Georgia", serif;
  --text: "Commissioner", "Segoe UI", system-ui, sans-serif;
  --mark: "Courier Prime", "Courier New", monospace;

  --measure: 66ch;
  --gutter: clamp(1rem, 4vw, 2.75rem);
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--tissue);
  background-image:
    radial-gradient(circle at 1px 1px, rgba(30, 34, 48, 0.07) 1px, transparent 1.4px);
  background-size: 22px 22px;
  color: var(--ink);
  font-family: var(--text);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  line-height: 1.65;
}

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

a { color: var(--chalk); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--pin); }

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

.skip {
  position: absolute; left: 1rem; top: -4rem;
  background: var(--ink); color: var(--muslin);
  padding: .6rem 1rem; font-family: var(--mark); z-index: 10;
}
.skip:focus { top: 1rem; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- tape measure header ---------- */

.tape {
  position: relative;
  background: var(--muslin);
  border-bottom: 2px solid var(--ink);
}
.tape::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 10px;
  background:
    repeating-linear-gradient(90deg, var(--ink) 0 1px, transparent 1px 12px),
    repeating-linear-gradient(90deg, var(--ink) 0 1px, transparent 1px 60px);
  background-size: auto 6px, auto 10px;
  background-repeat: repeat-x;
  background-position: left bottom, left bottom;
  opacity: .55;
}
.tape__row {
  max-width: 1180px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem var(--gutter) 1.4rem;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--display);
  font-size: 1.6rem; line-height: 1;
  color: var(--ink); text-decoration: none;
  display: inline-flex; align-items: baseline; gap: .5rem;
}
.brand small {
  font-family: var(--mark); font-size: .72rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--pin);
}
.nav { display: flex; gap: 1.4rem; flex-wrap: wrap; font-family: var(--mark); font-size: .9rem; }
.nav a { color: var(--ink); text-decoration: none; border-bottom: 1px dashed transparent; }
.nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--pin); color: var(--ink); }

/* ---------- hero: the pattern piece ---------- */

.hero {
  max-width: 1180px; margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) var(--gutter) 2rem;
  display: grid; gap: clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  align-items: center;
}
.hero__copy h1 {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(2.3rem, 1.4rem + 3.6vw, 4.4rem);
  line-height: 1.02; letter-spacing: -.01em;
  margin: 0 0 1.25rem;
}
.hero__copy h1 em { font-style: normal; color: var(--pin); }
.hero__lede { max-width: 44ch; font-size: 1.12rem; color: var(--ink-soft); margin: 0 0 1rem; }
.hero__aside { font-family: var(--mark); font-size: .85rem; color: var(--ink-soft); max-width: 44ch; }

.piece-fig { margin: 0; }
.piece-fig figcaption {
  font-family: var(--mark); font-size: .8rem; color: var(--ink-soft);
  margin-top: .5rem; text-align: right;
}
.piece-svg .paper { fill: var(--muslin); }
.piece-svg .outline { fill: none; stroke: var(--ink); stroke-width: 2.4; }
.piece-svg .seam { fill: none; stroke: var(--ink); stroke-width: 1.1; stroke-dasharray: 7 5; opacity: .7; }
.piece-svg .fold { stroke: var(--ink); stroke-width: 1.2; fill: none; }
.piece-svg .notch { fill: var(--ink); }
.piece-svg .day { font-family: var(--mark); font-size: 13px; fill: var(--ink-soft); text-anchor: middle; }
.piece-svg .grain { stroke: var(--ink); stroke-width: 1.4; fill: none; }
.piece-svg .grain-txt { font-family: var(--mark); font-size: 12px; fill: var(--ink); letter-spacing: .14em; }
.piece-svg .title { font-family: var(--display); font-size: 34px; fill: var(--ink); }
.piece-svg .sub { font-family: var(--mark); font-size: 13px; fill: var(--ink-soft); letter-spacing: .12em; }
.piece-svg .fold-txt { font-family: var(--mark); font-size: 12px; fill: var(--chalk); letter-spacing: .2em; }
.piece-svg .dart { fill: rgba(184, 58, 115, .08); stroke: var(--pin); stroke-width: 1.8; }
.piece-svg .dot { fill: var(--pin); }
.piece-svg .pull { fill: none; stroke: var(--pin); stroke-width: 1; stroke-dasharray: 2 5; opacity: .75; }
.piece-svg .tag { fill: var(--ink); }
.piece-svg .tag-txt { font-family: var(--mark); font-size: 15px; font-weight: 700; fill: var(--muslin); text-anchor: middle; }
.piece-svg .lbl { font-family: var(--mark); font-size: 13px; fill: var(--ink); }
.piece-svg .hit { fill: none; stroke: transparent; stroke-width: 22; }
.piece-svg .trace { fill: none; stroke: var(--chalk); stroke-width: 2.2; stroke-dasharray: 1 7; stroke-linecap: round; }
.piece-svg a { cursor: pointer; }
.piece-svg a:hover .dart, .piece-svg a:focus .dart, .piece-svg a.is-hot .dart { fill: rgba(184, 58, 115, .22); }
.piece-svg a:hover .seam-b, .piece-svg a:focus .seam-b, .piece-svg a.is-hot .seam-b { stroke: var(--pin); opacity: 1; stroke-width: 2; }
.piece-svg a:hover .tag, .piece-svg a:focus .tag, .piece-svg a.is-hot .tag { fill: var(--pin); }
.piece-svg a:focus { outline: none; }
.piece-svg a:focus-visible .tag { stroke: var(--pin); stroke-width: 4; }

.js .tracing { clip-path: inset(0 100% 0 0); animation: wheel 2.4s .4s cubic-bezier(.4, .1, .3, 1) forwards; }
@keyframes wheel { to { clip-path: inset(0 0 0 0); } }

/* ---------- envelope back: the library ---------- */

.envelope {
  max-width: 1180px; margin: 2rem auto 0;
  padding: 0 var(--gutter);
}
.envelope__card {
  background: var(--muslin);
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
  padding: clamp(1.25rem, 3vw, 2.25rem);
}
.envelope__head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap;
  border-bottom: 2px solid var(--ink); padding-bottom: .9rem; margin-bottom: 1rem;
}
.envelope__head h2 { font-family: var(--display); font-weight: 400; font-size: clamp(1.7rem, 1.2rem + 2vw, 2.5rem); margin: 0; }
.envelope__head p { margin: 0; font-family: var(--mark); font-size: .88rem; color: var(--ink-soft); }

.chart { width: 100%; border-collapse: collapse; }
.chart th {
  font-family: var(--mark); font-weight: 700; font-size: .78rem; letter-spacing: .1em;
  text-transform: uppercase; text-align: left; color: var(--ink-soft);
  padding: .5rem .75rem .5rem 0; border-bottom: 1px solid var(--ink);
}
.chart td { padding: 1.1rem .75rem 1.1rem 0; border-bottom: 1px dashed var(--steel); vertical-align: top; }
.chart tr:last-child td { border-bottom: 0; }
.chart .mark {
  font-family: var(--mark); font-weight: 700; font-size: 1.05rem;
  width: 2.2rem; height: 2.2rem; display: inline-grid; place-items: center;
  background: var(--ink); color: var(--muslin); border-radius: 50%;
}
.chart tr.is-hot .mark { background: var(--pin); }
.chart .piece-name { font-family: var(--mark); font-size: .9rem; color: var(--ink-soft); white-space: nowrap; }
.chart .note a { font-family: var(--display); font-size: 1.3rem; line-height: 1.2; color: var(--ink); text-decoration: none; }
.chart .note a:hover { color: var(--pin); text-decoration: underline; }
.chart .note p { margin: .35rem 0 0; color: var(--ink-soft); max-width: 60ch; }

/* ---------- instruction sheet ---------- */

.sheet {
  max-width: 1180px; margin: 0 auto;
  padding: clamp(3rem, 6vw, 5rem) var(--gutter) 1rem;
  display: grid; gap: 2rem;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
}
.sheet h2, .donotcut h2, .faq h2, .help h2 {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(1.7rem, 1.2rem + 2vw, 2.5rem); line-height: 1.1; margin: 0 0 .75rem;
}
.sheet__intro p { color: var(--ink-soft); margin: 0; }
.symbols { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.25rem; }
.symbols li {
  display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 1rem; align-items: start;
  padding-bottom: 1.25rem; border-bottom: 1px solid rgba(30, 34, 48, .25);
}
.symbols li:last-child { border-bottom: 0; }
.symbols svg { width: 56px; height: 40px; }
.symbols svg * { fill: none; stroke: var(--ink); stroke-width: 2; }
.symbols svg .fill { fill: var(--pin); stroke: none; }
.symbols h3 { font-family: var(--mark); font-size: .95rem; letter-spacing: .06em; text-transform: uppercase; margin: .2rem 0 .3rem; }
.symbols p { margin: 0; }

/* ---------- do not cut ---------- */

.donotcut {
  max-width: 1180px; margin: 2rem auto 0;
  padding: 0 var(--gutter);
}
.donotcut__box {
  border: 2px dashed var(--ink);
  padding: clamp(1.25rem, 3vw, 2.25rem);
  background:
    repeating-linear-gradient(135deg, transparent 0 14px, rgba(30, 34, 48, .05) 14px 16px);
  position: relative;
}
.donotcut__box::before {
  content: "\2702";
  position: absolute; top: -1.05rem; left: 1.5rem;
  background: var(--tissue); padding: 0 .4rem;
  font-size: 1.4rem; line-height: 1; color: var(--ink);
}
.donotcut ul { margin: 0; padding: 0; list-style: none; columns: 2 18rem; column-gap: 2.5rem; }
.donotcut li { break-inside: avoid; padding: .35rem 0 .35rem 1.6rem; position: relative; }
.donotcut li::before { content: "\00D7"; position: absolute; left: 0; color: var(--pin); font-weight: 700; }

/* ---------- faq ---------- */

.faq { max-width: 1180px; margin: 0 auto; padding: clamp(3rem, 6vw, 5rem) var(--gutter) 0; }
.faq dl { margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 30rem), 1fr)); gap: 0 3rem; }
.faq dl > div { border-top: 1px solid var(--ink); padding: 1rem 0 1.25rem; }
.faq dt { font-weight: 700; margin-bottom: .35rem; }
.faq dd { margin: 0; color: var(--ink-soft); }

.help { max-width: 1180px; margin: 0 auto; padding: clamp(2.5rem, 5vw, 4rem) var(--gutter); }
.help__card {
  background: var(--ink); color: var(--muslin);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1.5rem; align-items: center;
}
.help__card h2 { color: var(--muslin); margin: 0 0 .35rem; }
.help__card p { margin: 0; color: rgba(245, 238, 220, .82); }
.help__card a { color: var(--muslin); font-family: var(--mark); font-size: 1.05rem; }
.help__card a:hover { color: var(--tissue); }

/* ---------- inner pages ---------- */

.page {
  max-width: 1180px; margin: 0 auto;
  padding: clamp(2.5rem, 5vw, 4rem) var(--gutter) clamp(3rem, 6vw, 5rem);
}
.page__paper {
  background: var(--muslin);
  border: 2px solid var(--ink);
  padding: clamp(1.5rem, 4vw, 3.25rem);
  max-width: 860px;
  position: relative;
}
.page__paper::before {
  content: attr(data-piece);
  position: absolute; top: -.85rem; right: 1.5rem;
  background: var(--tissue); padding: 0 .6rem;
  font-family: var(--mark); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-soft);
}
.page h1 {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(2rem, 1.3rem + 2.8vw, 3.3rem); line-height: 1.06; margin: 0 0 .75rem;
}
.page .eyebrow { font-family: var(--mark); font-size: .85rem; color: var(--pin); letter-spacing: .08em; margin: 0 0 1rem; text-transform: uppercase; }
.page .meta { font-family: var(--mark); font-size: .85rem; color: var(--ink-soft); margin: 0 0 2rem; }
.page h2 { font-family: var(--display); font-weight: 400; font-size: 1.6rem; line-height: 1.2; margin: 2.25rem 0 .6rem; }
.page h3 { font-family: var(--mark); font-size: 1rem; margin: 1.5rem 0 .4rem; text-transform: uppercase; letter-spacing: .05em; }
.page p, .page li { max-width: var(--measure); }
.page ul { padding-left: 1.2rem; }
.page li { margin-bottom: .35rem; }
.page li::marker { color: var(--pin); }
.page .callout {
  border-left: 4px solid var(--chalk); background: rgba(63, 99, 176, .07);
  padding: 1rem 1.25rem; margin: 1.75rem 0;
}
.page .callout p { margin: 0; }
.page .sources { font-size: .92rem; color: var(--ink-soft); border-top: 1px dashed var(--steel); margin-top: 2.5rem; padding-top: 1rem; }
.page .sources li { margin-bottom: .5rem; }
.page .back { font-family: var(--mark); font-size: .9rem; margin-top: 2rem; }

/* ---------- selvedge footer ---------- */

.selvedge {
  height: 26px; background: var(--muslin);
  border-top: 2px solid var(--ink);
  font-family: var(--mark); font-size: 11px; letter-spacing: .4em; line-height: 24px;
  color: var(--pin); white-space: nowrap; overflow: hidden;
  background-image: radial-gradient(circle, var(--ink) 1.3px, transparent 1.6px);
  background-size: 14px 8px; background-repeat: repeat-x; background-position: 0 bottom;
}
.foot { background: var(--ink); color: rgba(245, 238, 220, .85); }
.foot__row {
  max-width: 1180px; margin: 0 auto; padding: 1.75rem var(--gutter) 0;
  display: flex; justify-content: space-between; gap: 1.25rem; flex-wrap: wrap; align-items: baseline;
}
.foot__row:last-child { padding-bottom: 2rem; }
.foot__brand { font-family: var(--display); font-size: 1.4rem; margin: 0; color: var(--muslin); }
.foot nav { display: flex; gap: 1.1rem; flex-wrap: wrap; font-family: var(--mark); font-size: .88rem; }
.foot a { color: var(--muslin); }
.foot a:hover { color: var(--tissue); }
.foot p { margin: 0; font-size: .88rem; max-width: 80ch; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .hero, .sheet { grid-template-columns: 1fr; }
  .hero__copy { order: -1; }
}
@media (max-width: 640px) {
  .chart thead { display: none; }
  .chart, .chart tbody, .chart tr, .chart td { display: block; width: 100%; }
  .chart tr { padding: 1rem 0; border-bottom: 1px dashed var(--steel); }
  .chart tr:last-child { border-bottom: 0; }
  .chart td { border: 0; padding: .2rem 0; }
  .help__card { grid-template-columns: 1fr; }
  .envelope__card { box-shadow: 5px 5px 0 var(--ink); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .tracing { clip-path: none; }
}