@font-face { font-family: "Instrument Serif"; src: url(fonts/serif.woff2) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Instrument Serif"; src: url(fonts/serif-italic.woff2) format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Public Sans"; src: url(fonts/sans.woff2) format("woff2"); font-weight: 100 900; font-style: normal; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url(fonts/mono.woff2) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }

:root {
  --bg: #f5f2ea;
  --raised: #fffcf5;
  --ink: #222920;
  --muted: #5c6459;
  --rule: #d6d8cc;
  --rule-strong: #b9bdae;
  --accent: #2f5a42;
  --accent-ink: #fffcf5;
  --accent-soft: #e3eadf;
  --shadow: 0 1px 2px rgb(34 41 32 / 6%), 0 12px 32px -12px rgb(34 41 32 / 18%);
  --serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --sans: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171a17; --raised: #1f241f; --ink: #eeece3; --muted: #aab2a5; --rule: #343b33; --rule-strong: #4a5348;
    --accent: #a6c8a5; --accent-ink: #142014; --accent-soft: #263127;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 16px 40px -16px rgb(0 0 0 / 60%);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #171a17; --raised: #1f241f; --ink: #eeece3; --muted: #aab2a5; --rule: #343b33; --rule-strong: #4a5348;
  --accent: #a6c8a5; --accent-ink: #142014; --accent-soft: #263127;
  --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 16px 40px -16px rgb(0 0 0 / 60%);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { margin: 0; font-weight: 400; }
p { margin: 0; }

.wrap { width: min(1120px, 100% - 40px); margin-inline: auto; }
.skip { position: absolute; left: 16px; top: -60px; padding: 8px 14px; background: var(--ink); color: var(--bg); border-radius: 8px; z-index: 20; }
.skip:focus { top: 12px; }
.label { font: 500 12px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.num { font: 400 13px/1 var(--mono); color: var(--muted); font-variant-numeric: tabular-nums; }

/* Header */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.2) blur(10px); -webkit-backdrop-filter: saturate(1.2) blur(10px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.top.scrolled { border-bottom-color: var(--rule); }
.top-in { display: flex; align-items: center; gap: 24px; height: 64px; }
.mark { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 22px/1 var(--serif); margin-right: auto; white-space: nowrap; }
.mark svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.mark svg .dot { fill: var(--accent); stroke: none; }
.top nav { display: flex; gap: 26px; font-size: 15px; }
.top nav a { text-decoration: none; color: var(--muted); }
.top nav a:hover { color: var(--ink); }
.theme { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--rule); background: transparent; color: var(--ink); cursor: pointer; }
.theme:hover { border-color: var(--rule-strong); }
.theme svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.theme svg path { fill: currentColor; stroke: none; }

/* Buttons */
.btn { display: inline-flex; align-items: center; height: 46px; padding: 0 20px; border-radius: 10px; background: var(--accent); color: var(--accent-ink); font-weight: 600; font-size: 15px; text-decoration: none; transition: transform .15s, filter .15s; }
.btn:hover { color: var(--accent-ink); filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.quiet { font-weight: 500; font-size: 15px; }

/* Hero */
.hero { display: grid; grid-template-columns: 7fr 5fr; gap: 56px; align-items: center; padding: 88px 0 96px; }
.hero h1 { font: 400 clamp(46px, 7vw, 84px)/1.0 var(--serif); letter-spacing: -.012em; margin: 18px 0 24px; }
.lede { max-width: 33em; font-size: 19px; color: var(--muted); }
.hero-links { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-top: 34px; }

.plate { margin: 0; }
.plate svg { width: 100%; height: auto; overflow: visible; }
.plate .rings circle { fill: none; stroke: var(--rule-strong); stroke-width: 1; }
.plate .ticks line { stroke: var(--rule-strong); stroke-width: 1; }
.plate .ticks line.long { stroke: var(--muted); }
.plate .axis { stroke: var(--rule); stroke-width: 1; stroke-dasharray: 2 5; }
.plate .arc { fill: none; stroke: var(--ink); stroke-width: 1.4; }
.plate .arc.faint { stroke: var(--muted); stroke-dasharray: 3 6; }
.plate .here { fill: var(--accent); }
.plate .here-ring { fill: none; stroke: var(--accent); stroke-width: 1; }
.plate .next { fill: var(--bg); stroke: var(--muted); stroke-width: 1.2; }
.plate text { font: 400 13px var(--mono); fill: var(--muted); }
.plate .t-strong { fill: var(--ink); font-size: 14px; }
.plate figcaption { margin-top: 14px; text-align: center; font: italic 15px var(--serif); color: var(--muted); }
.js .plate .arc { stroke-dasharray: 520; stroke-dashoffset: 520; animation: draw 1.6s .2s cubic-bezier(.3,.6,.2,1) forwards; }
.js .plate .arc.faint { animation: none; stroke-dashoffset: 0; stroke-dasharray: 3 6; }
.js .plate .here, .js .plate .here-ring, .js .plate .t-strong { opacity: 0; animation: fade .5s 1.5s forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fade { to { opacity: 1; } }

/* Blocks */
.block { padding: 96px 0; border-top: 1px solid var(--rule); }
.head { display: grid; gap: 14px; margin-bottom: 48px; }
.head h2 { font: 400 clamp(32px, 4.4vw, 48px)/1.08 var(--serif); letter-spacing: -.01em; max-width: 18em; }

/* Catalogue entry */
.entry { display: grid; grid-template-columns: 150px 1fr 1.15fr; gap: 40px; padding: 40px 0; border-top: 1px solid var(--ink); }
.entry-meta { display: flex; flex-direction: column; gap: 10px; font-size: 14px; color: var(--muted); }
.entry-meta .num { font-size: 15px; color: var(--ink); }
.status { display: inline-flex; align-items: center; gap: 7px; }
.status i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.entry-body { display: grid; gap: 18px; align-content: start; }
.entry-title { display: flex; align-items: center; gap: 14px; }
.entry-title img { width: 48px; height: 48px; border-radius: 11px; }
.entry h3 { font: 400 32px/1.1 var(--serif); }
.url { font: 13px var(--mono); color: var(--muted); margin-top: 4px; }
.outcome { font: 400 23px/1.3 var(--serif); }
.entry-body > p:not(.outcome):not(.entry-links) { color: var(--muted); }
.spec { margin: 4px 0 0; display: grid; border-top: 1px solid var(--rule); }
.spec div { display: grid; grid-template-columns: 96px 1fr; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--rule); font-size: 15px; }
.spec dt { font: 12px/1.9 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.spec dd { margin: 0; }
.entry-links { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-top: 8px; }
.shot { margin: 0; align-self: start; }
.shot img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--rule); box-shadow: var(--shadow); background: #f7f5ef; }
.shot figcaption { margin-top: 10px; font: italic 15px var(--serif); color: var(--muted); }
.entry-next { grid-template-columns: 150px 1fr; border-top-color: var(--rule); padding-bottom: 0; }
.entry-next p { max-width: 40em; color: var(--muted); }

/* Approach */
.rules { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 56px; }
.rules li { display: grid; align-content: start; grid-template-columns: 40px 1fr; gap: 6px 12px; padding: 28px 0; border-top: 1px solid var(--rule); }
.rules .num { grid-row: span 2; padding-top: 7px; }
.rules h3 { font: 600 18px/1.35 var(--sans); }
.rules p { color: var(--muted); }

/* Name */
.name { background: var(--raised); }
.chain { display: grid; grid-template-columns: repeat(3, 1fr); position: relative; margin: 8px 0 44px; }
.chain::before { content: ""; position: absolute; left: 0; right: 0; top: 62px; border-top: 1px solid var(--rule-strong); }
.chain > div { position: relative; display: grid; gap: 14px; padding-right: 32px; }
.chain > div::before { content: ""; position: absolute; left: 0; top: 58px; width: 9px; height: 9px; border-radius: 50%; background: var(--raised); border: 1px solid var(--muted); }
.chain > div:last-child::before { background: var(--accent); border-color: var(--accent); }
.word { font: 400 clamp(30px, 3.6vw, 42px)/1.15 var(--serif); height: 48px; }
.chain .gloss { margin-top: 18px; color: var(--muted); font-size: 15px; max-width: 22em; }
.story { max-width: 36em; font: 400 23px/1.45 var(--serif); }

/* Contact */
.contacts { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 56px; }
.contacts div { padding: 20px 0; border-top: 1px solid var(--rule); display: grid; gap: 6px; }
.contacts dt { font: 12px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.contacts dd { margin: 0; font-size: 17px; }
.contacts dd a { font: 400 24px/1.3 var(--serif); }

/* Footer */
.foot { border-top: 1px solid var(--rule); padding: 36px 0 48px; font-size: 14px; color: var(--muted); }
.foot-in { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; }
.foot nav { display: flex; flex-wrap: wrap; gap: 4px 20px; margin-right: auto; }
.foot nav a { padding: 6px 0; }
.foot .fine { flex-basis: 100%; font-size: 13px; }

/* Reveal on scroll, only when JS is running */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s, transform .6s cubic-bezier(.2,.7,.2,1); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .js .plate .arc, .js .plate .here, .js .plate .here-ring, .js .plate .t-strong { animation: none; opacity: 1; stroke-dashoffset: 0; }
}

/* Legal page */
.doc { padding: 72px 0 96px; }
.doc .wrap { max-width: 720px; }
.doc h1 { font: 400 clamp(40px, 6vw, 60px)/1.05 var(--serif); margin: 14px 0 28px; }
.doc h2 { font: 600 19px/1.4 var(--sans); margin: 36px 0 10px; }
.doc p, .doc li { color: var(--muted); }
.doc p + p { margin-top: 12px; }

/* Responsive */
@media (max-width: 980px) {
  .entry { grid-template-columns: 1fr 1fr; }
  .entry-meta { grid-column: 1 / -1; flex-direction: row; flex-wrap: wrap; gap: 18px; }
  .entry-next { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .top nav { gap: 18px; font-size: 14px; }
  .top nav a[href="#approach"], .top nav a[href="#name"] { display: none; }
  .hero { grid-template-columns: 1fr; gap: 48px; padding: 56px 0 72px; }
  .plate { max-width: 420px; width: 100%; justify-self: center; }
  .entry { grid-template-columns: 1fr; gap: 28px; }
  .rules, .contacts { grid-template-columns: 1fr; }
  .chain { grid-template-columns: 1fr; gap: 28px; }
  .chain::before { left: 4px; right: auto; top: 8px; bottom: 8px; border-top: 0; border-left: 1px solid var(--rule-strong); }
  .chain > div { padding: 0 0 0 30px; gap: 8px; }
  .chain > div::before { top: 9px; left: 0; }
  .word { height: auto; }
  .chain .gloss { margin-top: 0; }
  .block { padding: 64px 0; }
  .head { margin-bottom: 32px; }
}
@media (max-width: 420px) {
  .wrap { width: calc(100% - 32px); }
  body { font-size: 16px; }
  .lede { font-size: 17px; }
  .outcome, .story { font-size: 20px; }
  .spec div { grid-template-columns: 1fr; gap: 2px; }
  .contacts dd a { font-size: 21px; word-break: break-word; }
  .mark span { font-size: 20px; }
}