/* Self-hosted fonts (SIL Open Font License 1.1; see fonts/LICENCES.txt). The CSP allows font-src 'self' only. */
@font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 200 900; font-display: swap; src: url("/fonts/source-serif-4-opsz.woff2") format("woff2"); }
@font-face { font-family: "Source Serif 4"; font-style: italic; font-weight: 200 900; font-display: swap; src: url("/fonts/source-serif-4-italic.woff2") format("woff2"); }
@font-face { font-family: "Public Sans"; font-style: normal; font-weight: 100 900; font-display: swap; src: url("/fonts/public-sans.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 100 800; font-display: swap; src: url("/fonts/jetbrains-mono.woff2") format("woff2"); }

/* Layout: a standards document turned into a site. Left-aligned, clause-referenced sections, one specimen certificate as the hero. */
:root {
  --paper: #f6f8fb;
  --surface: #ffffff;
  --sunk: #eef1f6;
  --ink: #131925;
  --ink-2: #4a5466;
  --ink-3: #6b7587;
  --rule: #dce1ea;
  --brand: #2f6fed;
  --brand-ink: #1f55cf;
  --brand-wash: #e9effd;
  --on-brand: #ffffff;
  --seal: #0f1a36;
  --seal-ink: #e9eefb;
  --seal-ink-2: #a7b4d4;
  --seal-line: rgba(140, 170, 255, 0.22);
  --ok: #17734b;
  --ok-wash: #e3f3eb;
  --warn: #a94d0a;
  --warn-wash: #fbefe1;
  --block: #b42318;
  --block-wash: #fcebea;
  --shadow: 0 1px 2px rgba(15, 26, 54, 0.06), 0 8px 28px rgba(15, 26, 54, 0.07);

  --f-display: "Source Serif 4", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --f-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --t-xs: 0.78rem; --t-sm: 0.875rem; --t-md: 1rem; --t-lg: 1.125rem;
  --t-h3: 1.25rem; --t-h2: clamp(1.75rem, 1.2rem + 1.8vw, 2.4rem); --t-h1: clamp(2.3rem, 1.4rem + 3.4vw, 3.6rem);
  --wrap: 1180px;
  --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0c1018; --surface: #131925; --sunk: #182030; --ink: #e8ecf4; --ink-2: #a3adbf; --ink-3: #8390a6;
    --rule: #253046; --brand: #6e9bff; --brand-ink: #9ab8ff; --brand-wash: #16213b; --on-brand: #0a1022;
    --seal: #0a1430; --seal-ink: #e9eefb; --seal-ink-2: #9fb0d6; --seal-line: rgba(140, 170, 255, 0.2);
    --ok: #67d1a0; --ok-wash: #12302a; --warn: #ffb36b; --warn-wash: #36261a; --block: #ff8b80; --block-wash: #3a1d1c;
    --shadow: 0 0 0 1px rgba(110, 155, 255, 0.08), 0 10px 30px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0c1018; --surface: #131925; --sunk: #182030; --ink: #e8ecf4; --ink-2: #a3adbf; --ink-3: #8390a6;
  --rule: #253046; --brand: #6e9bff; --brand-ink: #9ab8ff; --brand-wash: #16213b; --on-brand: #0a1022;
  --seal: #0a1430; --seal-ink: #e9eefb; --seal-ink-2: #9fb0d6; --seal-line: rgba(140, 170, 255, 0.2);
  --ok: #67d1a0; --ok-wash: #12302a; --warn: #ffb36b; --warn-wash: #36261a; --block: #ff8b80; --block-wash: #3a1d1c;
  --shadow: 0 0 0 1px rgba(110, 155, 255, 0.08), 0 10px 30px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 var(--t-md)/1.6 var(--f-body); -webkit-font-smoothing: antialiased;
}
a { color: var(--brand-ink); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { text-wrap: balance; margin: 0; }
h1, h2 { font-family: var(--f-display); font-weight: 600; letter-spacing: -0.012em; line-height: 1.1; }
h2 { font-size: var(--t-h2); }
h3 { font-size: var(--t-h3); font-weight: 650; line-height: 1.3; letter-spacing: -0.005em; }
p { margin: 0; }
code, .mono { font-family: var(--f-mono); font-size: 0.86em; }
.num { font-variant-numeric: tabular-nums; }

.wrap {
  max-width: var(--wrap); margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px));
}
@media (min-width: 720px) { .wrap { padding-left: max(32px, env(safe-area-inset-left, 0px)); padding-right: max(32px, env(safe-area-inset-right, 0px)); } }

/* Draft notice */
.notice { background: var(--seal); color: var(--seal-ink); font-size: var(--t-sm); }
.notice .wrap { padding-block: 9px; display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.notice strong { font-weight: 600; }
.notice .tag { font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--seal-ink-2); border: 1px solid var(--seal-line); padding: 4px 7px; border-radius: 4px; }

/* Header */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: saturate(1.4) blur(10px); -webkit-backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--rule); }
.top .wrap { display: flex; align-items: center; gap: 20px; padding-block: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; min-width: 0; flex: 0 1 auto; }
.top .brand { flex: none; }
@media (max-width: 560px) { .top .brand { flex: 0 1 auto; } }
.brand .mark { flex: none; width: 26px; height: 26px; display: block; }
.brand .name { font-weight: 700; font-size: 0.98rem; letter-spacing: 0.005em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand .abbr { color: var(--ink-3); font-weight: 500; font-size: var(--t-sm); }
.nav { display: flex; gap: 2px; margin-left: auto; }
.nav a { color: var(--ink-2); text-decoration: none; font-size: var(--t-sm); font-weight: 500; padding: 6px 10px; border-radius: 6px; }
.nav a:hover { color: var(--ink); background: var(--sunk); }
.actions { display: flex; gap: 8px; align-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 600 var(--t-sm)/1 var(--f-body); padding: 11px 16px; border-radius: 8px; text-decoration: none; border: 1px solid var(--rule); background: var(--surface); color: var(--ink); cursor: pointer; white-space: nowrap; transition: background .15s, border-color .15s, transform .15s; }
.btn:hover { border-color: var(--ink-3); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--on-brand); }
.btn.primary:hover { background: var(--brand-ink); border-color: var(--brand-ink); }
.btn.lg { font-size: var(--t-md); padding: 14px 20px; }
.btn.quiet { background: transparent; border-color: transparent; color: var(--ink-2); }
.btn.quiet:hover { color: var(--ink); background: var(--sunk); }
.theme { width: 38px; height: 38px; padding: 0; }
.theme svg { width: 18px; height: 18px; }
.menu { display: none; position: relative; }
.menu summary { list-style: none; }
.menu summary::-webkit-details-marker { display: none; }
.menu .panel { position: absolute; right: 0; top: calc(100% + 8px); background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow); padding: 8px; display: grid; min-width: 220px; }
.menu .panel a { color: var(--ink); text-decoration: none; padding: 10px 12px; border-radius: 6px; font-weight: 500; }
.menu .panel a:hover { background: var(--sunk); }
@media (max-width: 1180px) { .nav { display: none; } .actions { margin-left: auto; } .menu { display: block; } }
@media (max-width: 560px) { .actions .signin, .top .brand .name { display: none; } .top .brand .abbr { color: var(--ink); font-weight: 700; font-size: 1rem; letter-spacing: 0.04em; } }
@media (max-width: 400px) { .actions .create { display: none; } }

/* Sections */
section { padding-block: clamp(56px, 7vw, 96px); border-top: 1px solid var(--rule); }
.clause { display: flex; gap: 10px; align-items: center; font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--brand-ink); margin-bottom: 16px; }
.clause::after { content: ""; flex: 0 0 36px; height: 1px; background: currentColor; opacity: .5; }
.lede { font-size: var(--t-lg); color: var(--ink-2); max-width: 64ch; margin-top: 14px; }
.head { max-width: 760px; margin-bottom: 40px; }
.muted { color: var(--ink-2); }
.small { font-size: var(--t-sm); }
.fine { font-size: var(--t-xs); color: var(--ink-3); }

/* Hero */
.hero { border-top: 0; padding-block: clamp(40px, 6vw, 80px) clamp(56px, 7vw, 96px); }
.hero .grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
@media (max-width: 920px) { .hero .grid { grid-template-columns: 1fr; } }
.hero h1 { font-size: var(--t-h1); }
.hero h1 em { font-style: italic; color: var(--brand-ink); font-weight: 500; }
.hero .lede { margin-top: 20px; }
.hero .cta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin-top: 40px; border-top: 1px solid var(--rule); }
.facts div { padding: 16px 16px 0 0; }
.facts div + div { padding-left: 16px; border-left: 1px solid var(--rule); }
.facts b { display: block; font: 600 1.7rem/1.1 var(--f-display); font-variant-numeric: tabular-nums; }
.facts span { font-size: var(--t-sm); color: var(--ink-2); }
@media (max-width: 480px) { .facts { grid-template-columns: 1fr; } .facts div + div { border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); padding-top: 14px; margin-top: 14px; } .facts div { padding-top: 14px; } }

/* Specimen certificate */
.cert { position: relative; background: var(--seal); color: var(--seal-ink); border-radius: 14px; overflow: hidden; box-shadow: var(--shadow); isolation: isolate; max-width: 100%; }
.cert canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.cert .inner { padding: clamp(20px, 3vw, 30px); display: grid; gap: 18px; }
.cert .row1 { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.cert .issuer { display: flex; gap: 10px; align-items: center; font-size: var(--t-sm); font-weight: 600; }
.cert .issuer .mark { width: 20px; height: 20px; display: block; flex: none; }
.cert .specimen { font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--warn); background: color-mix(in srgb, var(--warn) 14%, transparent); border: 1px solid color-mix(in srgb, var(--warn) 45%, transparent); padding: 6px 8px; border-radius: 4px; }
.cert .lvl { display: grid; gap: 4px; }
.cert .lvl small { font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--seal-ink-2); }
.cert .lvl strong { font: 600 clamp(2rem, 1.5rem + 2vw, 2.8rem)/1 var(--f-display); letter-spacing: -0.01em; }
.cert .subject { font-size: var(--t-sm); color: var(--seal-ink-2); }
.cert dl { margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 20px; padding-top: 18px; border-top: 1px solid var(--seal-line); }
.cert dt { font: 500 var(--t-xs)/1.2 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--seal-ink-2); margin-bottom: 4px; }
.cert dd { margin: 0; font-size: var(--t-sm); font-weight: 500; font-variant-numeric: tabular-nums; }
.cert dd.wide { grid-column: 1 / -1; }
.cert .fp { font-family: var(--f-mono); font-size: 0.74rem; word-break: break-all; color: var(--seal-ink); opacity: .92; }
.cert .claim { font-family: var(--f-display); font-style: italic; font-size: 1.02rem; line-height: 1.45; padding-top: 16px; border-top: 1px solid var(--seal-line); }
.cert .foot { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: var(--t-xs); color: var(--seal-ink-2); }
.cert .status { display: inline-flex; align-items: center; gap: 7px; }
.cert .status i { width: 8px; height: 8px; border-radius: 50%; background: #5fd49c; box-shadow: 0 0 0 4px rgba(95, 212, 156, 0.18); }
.cert-note { margin-top: 12px; font-size: var(--t-xs); color: var(--ink-3); }

/* What a certificate says */
.two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); }
@media (max-width: 860px) { .two { grid-template-columns: 1fr; } }
.points { display: grid; gap: 22px; }
.point { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 14px; }
.point svg { width: 24px; height: 24px; color: var(--brand-ink); margin-top: 2px; }
.point h3 { font-size: var(--t-lg); }
.point p { color: var(--ink-2); margin-top: 4px; }
.say { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; align-self: start; }
.say header { padding: 16px 20px; border-bottom: 1px solid var(--rule); font-weight: 600; }
.say header span { display: block; font-weight: 400; font-size: var(--t-sm); color: var(--ink-2); margin-top: 2px; }
.say .cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.say .cols > div { padding: 16px 20px; display: grid; gap: 10px; align-content: start; }
.say .cols > div + div { border-left: 1px solid var(--rule); }
.say h4 { margin: 0; font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.say .yes h4 { color: var(--ok); }
.say .no h4 { color: var(--block); }
.say q { quotes: "\201C" "\201D"; font-size: var(--t-sm); line-height: 1.45; display: block; }
.say .no q { color: var(--ink-2); text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--block) 60%, transparent); }
@media (max-width: 520px) { .say .cols { grid-template-columns: 1fr; } .say .cols > div + div { border-left: 0; border-top: 1px solid var(--rule); } }

/* Process */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); overflow: hidden; counter-reset: s; }
.steps li { padding: 24px; display: grid; gap: 10px; align-content: start; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); counter-increment: s; }
.steps li:nth-child(3n) { border-right: 0; }
.steps li:nth-last-child(-n+3) { border-bottom: 0; }
.steps .n { font: 600 1.9rem/1 var(--f-display); color: var(--brand-ink); font-variant-numeric: tabular-nums; }
.steps .n::before { content: counter(s, decimal-leading-zero); }
.steps h3 { font-size: var(--t-lg); }
.steps .who { display: grid; gap: 6px; font-size: var(--t-sm); }
.steps .who p { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 8px; color: var(--ink-2); }
.steps .who b { font: 500 var(--t-xs)/1.7 var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); font-weight: 500; }
@media (max-width: 900px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps li:nth-child(3n) { border-right: 1px solid var(--rule); }
  .steps li:nth-child(2n) { border-right: 0; }
  .steps li:nth-last-child(-n+3) { border-bottom: 1px solid var(--rule); }
  .steps li:nth-last-child(-n+2) { border-bottom: 0; }
}
@media (max-width: 600px) {
  .steps { grid-template-columns: 1fr; }
  .steps li, .steps li:nth-child(3n) { border-right: 0; }
  .steps li:nth-last-child(-n+2) { border-bottom: 1px solid var(--rule); }
  .steps li:last-child { border-bottom: 0; }
}
.never { margin-top: 28px; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px 20px; align-items: baseline; padding: 20px 24px; border-radius: var(--radius); background: var(--brand-wash); }
.never h3 { font-size: var(--t-md); }
.never ul { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px 22px; color: var(--ink-2); font-size: var(--t-sm); }
.never li::before { content: "×"; color: var(--brand-ink); font-weight: 700; margin-right: 7px; }
@media (max-width: 700px) { .never { grid-template-columns: 1fr; } }

/* Areas */
.areas-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 340px); gap: 32px; align-items: end; margin-bottom: 32px; }
@media (max-width: 860px) { .areas-top { grid-template-columns: 1fr; } }
.areas { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
.areas div { padding: 18px 18px 22px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); background: var(--surface); display: grid; gap: 6px; align-content: start; }
.areas small { font: 500 var(--t-xs)/1 var(--f-mono); color: var(--ink-3); letter-spacing: 0.06em; }
.areas b { font-weight: 600; font-size: 0.98rem; line-height: 1.35; }
@media (max-width: 900px) { .areas { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 640px) { .areas { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.sev { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 32px; }
@media (max-width: 760px) { .sev { grid-template-columns: 1fr; } }
.sev > div { padding: 18px 20px; border-radius: var(--radius); border: 1px solid var(--rule); background: var(--surface); display: grid; gap: 6px; align-content: start; }
.pill { display: inline-block; justify-self: start; font: 600 var(--t-xs)/1 var(--f-body); padding: 5px 10px; border-radius: 999px; letter-spacing: 0.02em; }
.pill.block { color: var(--block); background: var(--block-wash); }
.pill.warn { color: var(--warn); background: var(--warn-wash); }
.pill.adv { color: var(--brand-ink); background: var(--brand-wash); }
.pill.ok { color: var(--ok); background: var(--ok-wash); }
.sev p { color: var(--ink-2); font-size: var(--t-sm); }
.outcomes { margin-top: 32px; padding: 22px 24px; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); }
.outcomes h3 { font-size: var(--t-md); }
.outcomes p.muted { font-size: var(--t-sm); margin-top: 4px; }
.outcomes ol { list-style: none; margin: 14px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); gap: 10px 24px; }
.outcomes li { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 8px; font-size: var(--t-sm); }
.outcomes li code { color: var(--block); font-weight: 500; }

/* Connection options */
.opts { border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.opt { display: grid; grid-template-columns: 52px minmax(0, 1.2fr) minmax(0, 2fr) 120px 150px; gap: 16px; padding: 18px 22px; align-items: baseline; border-top: 1px solid var(--rule); }
.opt.hdr { border-top: 0; background: var(--sunk); padding-block: 12px; font: 500 var(--t-xs)/1.3 var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); }
.opt .letter { font: 600 1.3rem/1 var(--f-display); color: var(--brand-ink); }
.opt b { font-weight: 600; }
.opt .desc { color: var(--ink-2); font-size: var(--t-sm); }
.opt .time { font-size: var(--t-sm); font-variant-numeric: tabular-nums; }
.opt .lv { font-size: var(--t-sm); font-weight: 600; }
.opt.g { background: var(--brand-wash); }
.opt .lab { display: none; }
@media (max-width: 860px) {
  .opt.hdr { display: none; }
  .opt { grid-template-columns: 40px minmax(0, 1fr); gap: 6px 12px; }
  .opt .desc, .opt .time, .opt .lv { grid-column: 2; }
  .opt .lab { display: inline; color: var(--ink-3); font-weight: 400; }
}
.combine { margin-top: 14px; font-size: var(--t-sm); color: var(--ink-2); }

.sensor { margin-top: 56px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(28px, 4vw, 56px); align-items: start; }
@media (max-width: 920px) { .sensor { grid-template-columns: 1fr; } }
.sensor h3 { font: 600 clamp(1.5rem, 1.2rem + 1vw, 1.9rem)/1.15 var(--f-display); letter-spacing: -0.01em; }
.sensor .lede { font-size: var(--t-md); }
.rules { margin-top: 24px; display: grid; gap: 14px; }
.rules div { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 12px; padding-top: 14px; border-top: 1px solid var(--rule); font-size: var(--t-sm); }
.rules b { font-weight: 600; }
.rules span { color: var(--ink-2); }
@media (max-width: 520px) { .rules div { grid-template-columns: 1fr; gap: 2px; } }
.diagram { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 20px; }
.diagram svg { display: block; width: 100%; height: auto; }
.diagram .cap { margin-top: 14px; font-size: var(--t-xs); color: var(--ink-3); }
.svg-ink { fill: var(--ink); } .svg-ink2 { fill: var(--ink-2); } .svg-ink3 { fill: var(--ink-3); }
.svg-box { fill: var(--sunk); stroke: var(--rule); } .svg-brandbox { fill: var(--brand-wash); stroke: var(--brand); }
.svg-line { stroke: var(--ink-3); } .svg-brandline { stroke: var(--brand); } .svg-brandfill { fill: var(--brand); }
.svg-zone { fill: none; stroke: var(--rule); stroke-dasharray: 5 5; }
.ticks { margin-top: 20px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.ticks div { display: flex; gap: 10px; align-items: center; font-size: var(--t-sm); padding: 10px 12px; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); }
.ticks svg { width: 18px; height: 18px; color: var(--ok); flex: none; }
.levels-content { margin-top: 18px; display: flex; gap: 8px; flex-wrap: wrap; }
.chip { font-size: var(--t-xs); padding: 6px 10px; border-radius: 999px; border: 1px solid var(--rule); color: var(--ink-2); background: var(--surface); }
.chip b { color: var(--ink); font-weight: 600; }

/* Levels */
.levels { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 1060px) { .levels { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .levels { grid-template-columns: 1fr; } }
.level { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 22px; display: grid; grid-template-rows: auto auto 1fr auto; gap: 14px; }
.level .rung { display: flex; gap: 4px; }
.level .rung i { height: 4px; flex: 1; border-radius: 2px; background: var(--rule); }
.level .rung i.on { background: var(--brand); }
.level h3 { font: 600 1.45rem/1.1 var(--f-display); letter-spacing: -0.01em; }
.level .kind { font-size: var(--t-xs); color: var(--ink-3); margin-top: 4px; }
.level p { color: var(--ink-2); font-size: var(--t-sm); }
.level dl { margin: 0; display: grid; gap: 10px; padding-top: 14px; border-top: 1px solid var(--rule); font-size: var(--t-sm); }
.level dl div { display: grid; gap: 1px; }
.level dt { font: 500 var(--t-xs)/1.3 var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); }
.level dd { margin: 0; font-variant-numeric: tabular-nums; }
.level.hl { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand); }
.needs { margin-top: 28px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 32px; padding: 26px; border-radius: var(--radius); background: var(--sunk); }
@media (max-width: 860px) { .needs { grid-template-columns: 1fr; gap: 16px; } }
.needs h3 { font-size: var(--t-h3); }
.needs > div > p { color: var(--ink-2); margin-top: 8px; font-size: var(--t-sm); }
.needs ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.needs li { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 12px; font-size: var(--t-sm); padding-bottom: 10px; border-bottom: 1px solid var(--rule); }
.needs li:last-child { border-bottom: 0; padding-bottom: 0; }
.needs li b { font-weight: 600; }
.needs li span { color: var(--ink-2); }
@media (max-width: 480px) { .needs li { grid-template-columns: 1fr; gap: 2px; } }
.pricing { margin-top: 18px; font-size: var(--t-sm); color: var(--ink-2); }

/* Verify */
.verify { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(28px, 4vw, 56px); align-items: start; }
@media (max-width: 920px) { .verify { grid-template-columns: 1fr; } }
.ways { display: grid; gap: 18px; margin-top: 28px; }
.ways > div { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 14px; }
.ways svg { width: 22px; height: 22px; color: var(--brand-ink); margin-top: 2px; }
.ways b { font-weight: 600; display: block; }
.ways span { color: var(--ink-2); font-size: var(--t-sm); }
.readout { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.readout header { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--rule); background: var(--sunk); flex-wrap: wrap; }
.readout header b { font-size: var(--t-sm); }
.readout header code { color: var(--ink-2); font-size: var(--t-xs); word-break: break-all; }
.readout ol { list-style: none; margin: 0; padding: 6px 0; counter-reset: v; }
.readout li { display: grid; grid-template-columns: 26px minmax(0, 1fr) auto; gap: 12px; padding: 11px 18px; align-items: baseline; font-size: var(--t-sm); counter-increment: v; }
.readout li + li { border-top: 1px dashed var(--rule); }
.readout li::before { content: counter(v); font: 500 var(--t-xs)/1 var(--f-mono); color: var(--ink-3); }
.readout li span { color: var(--ink-2); display: block; font-size: var(--t-xs); margin-top: 2px; }
.readout .r { font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: 0.04em; padding: 4px 7px; border-radius: 4px; white-space: nowrap; }
.readout .r.ok { color: var(--ok); background: var(--ok-wash); }
.readout .r.na { color: var(--ink-3); background: var(--sunk); }
.readout .r.you { color: var(--brand-ink); background: var(--brand-wash); }
.readout footer { padding: 14px 18px; border-top: 1px solid var(--rule); font-size: var(--t-xs); color: var(--ink-3); }

/* Lifecycle */
.changes { border: 1px solid var(--rule); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.chg { display: grid; grid-template-columns: 120px minmax(0, 1.6fr) minmax(0, 1.2fr); gap: 20px; padding: 18px 22px; border-top: 1px solid var(--rule); align-items: baseline; font-size: var(--t-sm); }
.chg:first-child { border-top: 0; }
.chg .ex { color: var(--ink-2); }
@media (max-width: 760px) { .chg { grid-template-columns: 1fr; gap: 6px; } }
.life { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 24px; }
@media (max-width: 860px) { .life { grid-template-columns: 1fr; } }
.life div { padding-top: 16px; border-top: 2px solid var(--rule); display: grid; gap: 6px; align-content: start; }
.life div.a { border-color: var(--ok); } .life div.p { border-color: var(--warn); } .life div.w { border-color: var(--block); }
.life b { font-weight: 600; }
.life p { color: var(--ink-2); font-size: var(--t-sm); }

/* Independence */
.commit { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px 40px; }
@media (max-width: 900px) { .commit { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .commit { grid-template-columns: 1fr; } }
.commit div { display: grid; gap: 6px; align-content: start; }
.commit small { font: 500 var(--t-xs)/1 var(--f-mono); color: var(--brand-ink); letter-spacing: 0.06em; }
.commit b { font-weight: 600; font-size: 1.02rem; }
.commit p { color: var(--ink-2); font-size: var(--t-sm); }

/* Status / roadmap */
.status-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: clamp(28px, 4vw, 56px); }
@media (max-width: 900px) { .status-grid { grid-template-columns: 1fr; } }
.now { display: grid; gap: 10px; margin-top: 24px; }
.now div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 12px; font-size: var(--t-sm); align-items: baseline; }
.now .pill { justify-self: start; }
@media (max-width: 460px) { .now div { grid-template-columns: 1fr; gap: 4px; } }
.track { list-style: none; margin: 0; padding: 0; position: relative; display: grid; gap: 0; }
.track li { display: grid; grid-template-columns: 110px 22px minmax(0, 1fr); gap: 14px; padding-bottom: 22px; position: relative; }
.track li::after { content: ""; position: absolute; left: calc(110px + 14px + 10px); top: 14px; bottom: 0; width: 2px; background: var(--rule); }
.track li:last-child::after { display: none; }
.track time { font: 500 var(--t-sm)/1.5 var(--f-mono); color: var(--ink-2); text-align: right; font-variant-numeric: tabular-nums; }
.track .dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--brand); background: var(--paper); margin: 5px 0 0 5px; position: relative; z-index: 1; }
.track li.done .dot { background: var(--brand); }
.track b { font-weight: 600; display: block; }
.track span { color: var(--ink-2); font-size: var(--t-sm); }
@media (max-width: 460px) {
  .track li { grid-template-columns: 22px minmax(0, 1fr); }
  .track time { grid-column: 2; text-align: left; order: -1; }
  .track .dot { grid-row: 1 / span 2; grid-column: 1; }
  .track li::after { left: 10px; }
}

/* CTA band */
.band { background: var(--seal); color: var(--seal-ink); border-top: 0; }
.band .wrap { display: grid; grid-template-columns: minmax(0, 1.3fr) auto; gap: 28px; align-items: center; }
@media (max-width: 760px) { .band .wrap { grid-template-columns: 1fr; } }
.band h2 { color: var(--seal-ink); }
.band p { color: var(--seal-ink-2); margin-top: 12px; max-width: 58ch; }
.band .cta { display: flex; gap: 10px; flex-wrap: wrap; }
.band .btn:not(.primary) { background: transparent; color: var(--seal-ink); border-color: var(--seal-line); }
.band .btn:not(.primary):hover { border-color: var(--seal-ink-2); }

footer.site { padding-block: 40px 48px; font-size: var(--t-sm); color: var(--ink-2); }
footer.site .wrap { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr)); gap: 28px; }
@media (max-width: 700px) { footer.site .wrap { grid-template-columns: 1fr; } }
footer.site h4 { margin: 0 0 10px; font: 500 var(--t-xs)/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
footer.site ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
footer.site a { color: var(--ink-2); text-decoration: none; }
footer.site a:hover { color: var(--ink); text-decoration: underline; }
footer.site .legal { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid var(--rule); font-size: var(--t-xs); color: var(--ink-3); display: flex; gap: 8px 20px; flex-wrap: wrap; }

/* Page basics and spacing helpers (inline style attributes are not allowed by the CSP) */
img { max-width: 100%; }
[hidden] { display: none !important; }
.cert { margin: 0; }
.gap-s { margin-top: 12px; }
.gap-m { margin-top: 18px; }
.gap-l { margin-top: 22px; }
.foot-about { margin-top: 12px; max-width: 44ch; }
.hero .after-cta { margin-top: 18px; font-size: var(--t-sm); color: var(--ink-2); max-width: 52ch; }