/* The specification page: a long read on paper. */
.spec-page { background: var(--paper); }
.spec-hero {
  padding: 140px 0 70px;
  background: radial-gradient(60% 80% at 85% 20%, rgba(228, 87, 46, .14), transparent 70%), linear-gradient(180deg, #120e0b, var(--night));
}
.spec-hero h1 { font-size: clamp(52px, 7.4vw, 104px); margin-bottom: 30px; }
.spec-motto { margin: 0 0 40px; max-width: 34em; font: italic 400 clamp(20px, 2vw, 26px)/1.35 var(--serif); color: #d8cdba; border-left: 2px solid var(--accent); padding-left: 20px; }
.spec-ids { display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 0; margin: 0 0 38px; border-top: 1px solid var(--line-dark); }
.spec-ids div { padding: 14px 32px 0 0; }
.spec-ids dt { font: 600 10.5px/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: #8b7f70; }
.spec-ids dd { margin: 4px 0 0; font-size: 15px; }
.spec-ids code { font-size: 13.5px; }

.spec-layout {
  display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 56px;
  background: transparent;
  color: var(--paper-ink);
  padding-top: 56px; padding-bottom: 100px;
  color-scheme: light;
}
.spec-page main, .spec-layout { position: relative; }
.spec-page .spec-layout::before {
  content: ''; position: absolute; inset: 0 -100vw; z-index: -1;
  background: linear-gradient(180deg, #f1eadb, #e9dfca);
}

.spec-toc { position: sticky; top: 92px; align-self: start; max-height: calc(100vh - 110px); overflow: auto; padding-right: 8px; scrollbar-width: thin; }
.spec-toc summary { font: 700 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--paper-muted); cursor: pointer; padding: 6px 0 14px; list-style: none; }
.spec-toc summary::-webkit-details-marker { display: none; }
.spec-toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--paper-line); }
.spec-toc li a { display: flex; gap: 10px; padding: 5px 0 5px 14px; margin-left: -1px; border-left: 2px solid transparent; text-decoration: none; font-size: 13.5px; line-height: 1.35; color: #5a5046; transition: color .15s, border-color .15s; }
.spec-toc li a span { font: 600 11px/1.6 var(--mono); color: #9a8d7c; min-width: 2.6em; }
.spec-toc li.l3 a { padding-left: 28px; font-size: 12.5px; }
.spec-toc li.l3 a span { min-width: 2.9em; }
.spec-toc li a:hover { color: var(--paper-ink); }
.spec-toc li a.on { color: var(--paper-ink); border-left-color: var(--accent); }
.spec-toc li a.on span { color: var(--accent); }

.spec-body { min-width: 0; max-width: 820px; font-size: 16.5px; line-height: 1.75; color: #2d261f; }
.spec-body h2 { font: 400 clamp(36px, 4vw, 50px)/1.05 var(--serif); letter-spacing: -.02em; margin: 72px 0 24px; padding-top: 28px; border-top: 1.5px solid var(--paper-ink); }
.spec-body h2:first-child { margin-top: 0; }
.spec-body h3 { font: 400 27px/1.2 var(--serif); margin: 44px 0 14px; }
.spec-body h4 { font: 700 13px var(--mono); letter-spacing: .08em; text-transform: uppercase; margin: 30px 0 10px; }
.spec-body h2, .spec-body h3 { position: relative; scroll-margin-top: 90px; }
.anchor { position: absolute; left: -1.2em; opacity: 0; text-decoration: none; color: var(--accent); font-size: .7em; top: .2em; transition: opacity .15s; }
.spec-body h2 .anchor { top: 1.25em; }
h2:hover > .anchor, h3:hover > .anchor, .anchor:focus { opacity: 1; }
.spec-body p { margin: 0 0 18px; }
.spec-body a { color: #a8391a; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.spec-body a:hover { color: var(--accent); }
.spec-body strong { font-weight: 700; color: var(--paper-ink); }
.spec-body code { font-size: .82em; background: rgba(60, 40, 20, .08); padding: 1px 5px; border-radius: 3px; color: #3a2a1d; word-break: break-word; }
.spec-body ul, .spec-body ol { padding-left: 1.4em; margin: 0 0 18px; }
.spec-body li { margin: 4px 0; }
.spec-body li > ul, .spec-body li > ol { margin: 6px 0; }
.spec-body li p { margin: 6px 0; }
.spec-body hr { display: none; }
.spec-body blockquote { margin: 22px 0; padding: 16px 20px; background: rgba(228, 87, 46, .08); border-left: 3px solid var(--accent); border-radius: 0 6px 6px 0; }
.spec-body blockquote p:last-child { margin: 0; }
.spec-body pre.code {
  margin: 0 0 22px; padding: 18px 20px; border-radius: 8px;
  background: #191512; color: #ece4d4; font-size: 13px; line-height: 1.7; overflow-x: auto;
  box-shadow: 0 14px 30px -18px rgba(40, 25, 10, .6);
  color-scheme: dark;
}
.spec-body pre.code code { background: none; padding: 0; color: inherit; font-size: inherit; word-break: normal; }
.table-wrap { overflow-x: auto; margin: 0 0 24px; border-top: 1.5px solid var(--paper-ink); }
.spec-body table { width: 100%; border-collapse: collapse; font-size: 14.5px; line-height: 1.55; }
.spec-body th { text-align: left; font: 700 11px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--paper-muted); padding: 12px 14px 10px 0; border-bottom: 1px solid var(--paper-line); vertical-align: bottom; }
.spec-body td { padding: 10px 14px 10px 0; border-bottom: 1px solid var(--paper-line); vertical-align: top; }
.spec-body td code { white-space: nowrap; }
.spec-body img { background: #fff; border-radius: 8px; padding: 12px; margin: 8px 0 24px; box-shadow: 0 14px 30px -18px rgba(40, 25, 10, .5); width: 100%; height: auto; }
.spec-foot { margin-top: 56px; padding-top: 24px; border-top: 1.5px solid var(--paper-ink); font-size: 14px; color: var(--paper-muted); }
.spec-page .site-footer { padding-top: 0; }

@media (max-width: 1000px) {
  .spec-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; padding-top: 0; }
  .spec-toc { position: sticky; top: 68px; z-index: 5; max-height: none; overflow: visible; margin: 0 calc(-1 * var(--gutter)); padding: 0 var(--gutter); background: rgba(238, 230, 212, .96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--paper-line); }
  .spec-toc summary { padding: 16px 0; }
  .spec-toc summary::after { content: ' ▾'; }
  .spec-toc details[open] ol { max-height: 60vh; overflow: auto; padding-bottom: 14px; }
  .spec-ids { grid-template-columns: repeat(2, auto); }
  .anchor { display: none; }
}
@media (max-width: 560px) {
  .spec-ids { grid-template-columns: minmax(0, 1fr); }
  .spec-body { font-size: 15.5px; }
  .spec-body td code { white-space: normal; }
}