/* Matthew Nolan — site styles. Warm paper, quiet ink, one hi-vis accent. */
:root {
  --paper: #f5f1e8; --paper-2: #ede7da; --card: #fbf9f4; --rule: #dcd4c4; --rule-2: #c9bfac;
  --ink: #1c1a16; --ink-2: #4a453c; --ink-3: #635c50;
  --accent: #b3401a; --accent-ink: #8f3112;
  --night: #1c1a16; --night-2: #2a2721; --on-night: #f5f1e8; --on-night-2: #c9c1b2; --accent-night: #f08a5d;
  --serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --gut: clamp(16px, 4vw, 40px);
  --r: 6px;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.0625rem/1.65 var(--sans); text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.1; letter-spacing: -0.015em; margin: 0; text-wrap: balance; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.75rem); }
h3 { font-size: 1.35rem; }
p { margin: 0 0 1em; text-wrap: pretty; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 var(--gut); }
.narrow { max-width: 760px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 50; background: var(--ink); color: var(--paper); padding: 10px 14px; border-radius: var(--r); }
.skip:focus { top: 12px; color: var(--paper); }
.eyebrow { font: 500 0.75rem/1.4 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-ink); margin: 0 0 14px; }
.eyebrow a { color: inherit; }
.arr { display: inline-block; vertical-align: -1px; transition: transform .2s; flex: none; }
a:hover .arr { transform: translateX(3px); }

/* buttons + links */
.btn { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 0 22px; border-radius: var(--r); background: var(--ink); color: var(--paper); font: 500 1rem/1 var(--sans); text-decoration: none; border: 1px solid var(--ink); cursor: pointer; transition: background .2s, color .2s; }
.btn:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--rule-2); }
.btn-ghost:hover { background: var(--card); color: var(--ink); border-color: var(--ink); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: .9375rem; }
.tlink { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; text-decoration: underline; text-decoration-color: var(--rule-2); min-height: 44px; }
.tlink:hover { text-decoration-color: currentColor; }
.tlink-inv { color: var(--on-night); }
.tlink-inv:hover { color: var(--accent-night); }
.linkbtn { background: none; border: 0; padding: 0; font: inherit; color: inherit; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; min-height: 24px; }
.copied { margin-left: 8px; color: var(--accent-ink); }

/* header */
.site-h { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.site-h.scrolled { border-bottom-color: var(--rule); }
.site-h .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; min-height: 44px; }
.brand .mono { font: 500 .8125rem/1 var(--mono); letter-spacing: .04em; border: 1px solid var(--ink); padding: 7px 7px 6px; border-radius: 3px; }
.brand-name { font: 500 1.0625rem/1 var(--sans); }
#nav ul { display: flex; align-items: center; gap: 4px; }
#nav a:not(.btn) { display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px; text-decoration: none; color: var(--ink-2); font-size: .9375rem; border-radius: var(--r); }
#nav a:not(.btn):hover { color: var(--ink); background: var(--paper-2); }
#nav a[aria-current="page"]:not(.btn) { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 6px; }
#nav li:last-child { margin-left: 8px; }
.nav-btn { display: none; width: 44px; height: 44px; border: 1px solid var(--rule-2); border-radius: var(--r); background: transparent; cursor: pointer; align-items: center; justify-content: center; }
.burger, .burger::before, .burger::after { display: block; width: 18px; height: 1.5px; background: var(--ink); position: relative; transition: transform .2s; }
.burger::before, .burger::after { content: ''; position: absolute; left: 0; }
.burger::before { top: -6px; } .burger::after { top: 6px; }
.nav-btn[aria-expanded="true"] .burger { background: transparent; }
.nav-btn[aria-expanded="true"] .burger::before { transform: translateY(6px) rotate(45deg); }
.nav-btn[aria-expanded="true"] .burger::after { transform: translateY(-6px) rotate(-45deg); }
@media (max-width: 880px) {
  .js .nav-btn { display: inline-flex; }
  .js #nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--rule); padding: 8px var(--gut) 20px; }
  .js #nav.open { display: block; }
  .js #nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .js #nav a:not(.btn) { display: flex; min-height: 52px; font-size: 1.0625rem; border-bottom: 1px solid var(--rule); border-radius: 0; padding: 0 4px; }
  .js #nav li:last-child { margin: 16px 0 0; }
  .js #nav .btn { width: 100%; justify-content: center; }
  html:not(.js) #nav ul { flex-wrap: wrap; }
  html:not(.js) .site-h .wrap { flex-wrap: wrap; padding-block: 8px; }
}

/* sections */
.band { padding: clamp(64px, 9vw, 120px) 0; }
.band-tight { padding-top: clamp(24px, 4vw, 48px); }
.band-alt { background: var(--paper-2); }
.band-ink { background: var(--night); color: var(--on-night); }
.band-ink .eyebrow { color: var(--accent-night); }
.sec-head { max-width: 760px; margin-bottom: clamp(32px, 5vw, 56px); }
.sec-head p:not(.eyebrow) { color: var(--ink-2); margin-top: 16px; font-size: 1.0625rem; }
.more { margin-top: 28px; }
.page-head { padding: clamp(48px, 8vw, 104px) 0 clamp(24px, 4vw, 40px); }
.page-head h1 { font-size: clamp(2.5rem, 6.5vw, 5rem); max-width: 16ch; }
.lede { font-size: clamp(1.125rem, 1.8vw, 1.3rem); color: var(--ink-2); max-width: 62ch; margin-top: 20px; }
.lede a { color: var(--ink); }

/* hero */
.hero { padding: clamp(40px, 7vw, 96px) 0 clamp(56px, 8vw, 112px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .9fr); gap: clamp(32px, 5vw, 72px); align-items: start; }
.h1-name { display: block; font-size: clamp(3.1rem, 8.4vw, 6.6rem); line-height: .98; letter-spacing: -0.03em; }
.h1-line { display: block; margin-top: 18px; font-style: italic; font-size: clamp(1.6rem, 3.3vw, 2.5rem); line-height: 1.15; color: var(--accent-ink); }
.hero-lede { margin-top: 28px; font-size: clamp(1.125rem, 1.8vw, 1.3rem); color: var(--ink-2); max-width: 34ch; }
.ctas { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; margin-top: 32px; }
.shift { background: var(--card); border: 1px solid var(--rule); border-radius: 10px; padding: clamp(20px, 2.6vw, 30px); box-shadow: 0 1px 0 var(--rule), 0 24px 48px -32px rgba(28, 26, 22, .35); }
.shift-h { font: 500 .75rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); padding-bottom: 14px; border-bottom: 1px dashed var(--rule-2); }
.shift-now { display: flex; gap: 10px; align-items: baseline; margin: 16px 0 14px; font: 500 .9375rem/1.45 var(--sans); }
.dot { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); transform: translateY(-1px); }
@media (prefers-reduced-motion: no-preference) { .dot { animation: pulse 2.4s ease-in-out infinite; } }
@keyframes pulse { 50% { box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 18%, transparent); } }
.shift-rows li { display: grid; grid-template-columns: 92px 1fr; gap: 12px; padding: 8px 0; font-size: .9375rem; color: var(--ink-2); }
.shift-rows .t { font: 400 .8125rem/1.7 var(--mono); color: var(--ink-3); }
.ledger { margin-top: 6px; border-top: 1px solid var(--rule); }
.ledger li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--rule); font-size: .9375rem; }
.shift-foot { margin-top: 14px; font-size: .8125rem; color: var(--ink-3); }

/* evidence tags + status */
.ev { flex: none; display: inline-flex; align-items: center; gap: 6px; min-height: 28px; padding: 0 8px 0 0; border: 1px solid var(--rule-2); border-radius: 4px; font: 400 .75rem/1 var(--mono); text-decoration: none; color: var(--ink); background: var(--paper); white-space: nowrap; }
.ev:hover { border-color: var(--ink); color: var(--ink); }
.ev-k { font: 500 .625rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.ev .ev-k { align-self: stretch; display: inline-flex; align-items: center; padding: 0 6px; border-right: 1px solid var(--rule-2); background: var(--paper-2); border-radius: 3px 0 0 3px; }
.st { display: inline-flex; align-items: center; gap: 6px; padding: 4px 8px 3px; border-radius: 3px; font: 500 .6875rem/1 var(--mono); letter-spacing: .06em; white-space: nowrap; vertical-align: middle; }
.st::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.st-live { color: #1e5c39; background: #e1ede3; }
.st-in-use { color: #1f4b73; background: #e0e9f2; }
.st-building { color: #6e4a00; background: #f4e9cf; }
.st-experiment { color: #553a80; background: #ebe4f3; }
.st-shelved, .st-archived { color: #4f4a40; background: #e5dfd2; }
.st-shelved::before { border-radius: 1px; }
.st-concept, .st-research { color: #4f4a40; background: transparent; box-shadow: inset 0 0 0 1px var(--rule-2); }

/* short version */
.short { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.short li { padding: 24px 24px 28px 0; border-bottom: 1px solid var(--rule); }
.short li:not(:nth-child(3n+1)) { padding-left: 24px; border-left: 1px solid var(--rule); }
.short h3 { font: 500 .8125rem/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 10px; }
.short p { font-family: var(--serif); font-size: 1.375rem; line-height: 1.3; }

/* proof */
.proof-rail { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 3vw, 36px); }
.shot { margin: 0; }
.frame { border: 1px solid var(--rule-2); border-radius: 8px; overflow: hidden; background: var(--card); box-shadow: 0 20px 40px -30px rgba(28, 26, 22, .45); }
.bar { display: flex; align-items: center; gap: 6px; height: 32px; padding: 0 12px; border-bottom: 1px solid var(--rule); background: var(--paper); }
.bar i { width: 8px; height: 8px; border-radius: 50%; background: var(--rule-2); }
.bar span { margin-left: 10px; font: 400 .75rem/1 var(--mono); color: var(--ink-3); }
.shot figcaption { margin-top: 12px; font-size: .875rem; color: var(--ink-3); }
.proof-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 8px; font-size: .9375rem; }
.proof-meta a { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; font-weight: 500; }

/* project list */
.plist { border-top: 1px solid var(--ink); counter-reset: p; }
.prow { border-bottom: 1px solid var(--rule); }
.prow-link { display: grid; grid-template-columns: 56px minmax(0, 1fr) auto; gap: 8px 20px; padding: 28px 0; text-decoration: none; color: inherit; }
a.prow-link:hover { color: inherit; }
a.prow-link:hover .prow-t { color: var(--accent-ink); }
.prow-n { font: 400 .8125rem/2.2 var(--mono); color: var(--ink-3); }
.prow-main { display: grid; gap: 6px; }
.prow-top { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; }
.prow-t { font: 400 clamp(1.5rem, 2.6vw, 2rem)/1.15 var(--serif); letter-spacing: -0.01em; transition: color .2s; }
.prow-sub { font-weight: 500; }
.prow-sum { color: var(--ink-2); max-width: 66ch; }
.prow-tech { font: 400 .75rem/1.6 var(--mono); color: var(--ink-3); }
.prow-go { align-self: center; display: inline-flex; align-items: center; gap: 8px; font-size: .9375rem; font-weight: 500; white-space: nowrap; }
.prow[hidden] { display: none; }
.note-repo { margin-top: 28px; color: var(--ink-2); font-size: .9375rem; }

/* legend + filters */
.legend { margin-bottom: 20px; border: 1px solid var(--rule); border-radius: var(--r); background: var(--card); }
.legend summary { cursor: pointer; padding: 12px 16px; font-weight: 500; min-height: 44px; }
.legend dl { display: grid; gap: 10px; margin: 0; padding: 4px 16px 16px; }
.legend dl div { display: grid; grid-template-columns: 120px 1fr; gap: 12px; align-items: baseline; }
.legend dt, .legend dd { margin: 0; }
.legend dd { color: var(--ink-2); font-size: .9375rem; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.filters button { min-height: 40px; padding: 0 14px; border: 1px solid var(--rule-2); border-radius: 999px; background: transparent; font: 500 .75rem/1 var(--mono); letter-spacing: .06em; color: var(--ink-2); cursor: pointer; }
.filters button:hover { border-color: var(--ink); color: var(--ink); }
.filters button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* safety net */
.net { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
.net h2 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
.net-copy { font-size: 1.1875rem; color: var(--on-night-2); }
.net-copy p:first-child { color: var(--on-night); }
.net-proof { padding: 20px 0 0; margin-top: 8px; border-top: 1px solid #4a453c; color: var(--on-night); font-family: var(--serif); font-size: 1.375rem; line-height: 1.4; }
.band-ink :focus-visible { outline-color: var(--accent-night); }

/* principles */
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--ink); }
.pr { padding: 28px 28px 32px 0; border-bottom: 1px solid var(--rule); display: flex; flex-direction: column; }
.pr:not(:nth-child(3n+1)) { padding-left: 28px; border-left: 1px solid var(--rule); }
.pr-n { font: 400 .75rem/1 var(--mono); color: var(--accent-ink); margin-bottom: 16px; }
.pr h3 { font-size: 1.5rem; margin-bottom: 12px; }
.pr p { color: var(--ink-2); }
.pr .pr-proof { margin-top: auto; padding-top: 16px; font-size: .875rem; }
.pr-proof .ev-k { display: block; margin-bottom: 6px; }
.pr-proof a { color: var(--ink); }

/* failures */
.fails { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 3vw, 32px); }
.fail { background: var(--card); border: 1px solid var(--rule); border-left: 3px solid var(--accent); border-radius: var(--r); padding: clamp(22px, 3vw, 32px); }
.fail-when { font: 500 .75rem/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; }
.fail h3 { font-size: clamp(1.4rem, 2.4vw, 1.75rem); margin-bottom: 18px; }
.fail dl { margin: 0 0 12px; display: grid; gap: 4px; }
.fail dt { font: 500 .6875rem/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); margin-top: 10px; }
.fail dd { margin: 0; color: var(--ink-2); }

/* now */
.now-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--ink); }
.now-col { padding: 24px 24px 24px 0; }
.now-col + .now-col { padding-left: 24px; border-left: 1px solid var(--rule); }
.now-col h3 { font: 500 .8125rem/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 14px; }
.now-col li { padding: 8px 0; border-bottom: 1px dashed var(--rule); color: var(--ink-2); }
.now-col li:last-child { border-bottom: 0; }

/* talk */
.talk { background: var(--paper-2); border-top: 1px solid var(--rule); }
.talk-head { max-width: 760px; margin-bottom: 36px; }
.talk-head p { color: var(--ink-2); margin-top: 14px; font-size: 1.125rem; }
.modes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.mode { display: flex; flex-direction: column; gap: 8px; height: 100%; padding: 20px; border: 1px solid var(--rule-2); border-radius: var(--r); background: var(--card); text-decoration: none; transition: border-color .2s, transform .2s; }
.mode:hover { border-color: var(--ink); color: inherit; }
@media (prefers-reduced-motion: no-preference) { .mode:hover { transform: translateY(-2px); } }
.mode-t { display: inline-flex; align-items: center; gap: 8px; font: 400 1.375rem/1.2 var(--serif); }
.mode-d { color: var(--ink-2); font-size: .9375rem; }
.modes-col { grid-template-columns: 1fr; }
.mode[aria-current="true"] { border-color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); }

/* case study */
.facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; margin: 36px 0 0; border-top: 1px solid var(--ink); }
.facts div { padding: 14px 0; border-bottom: 1px solid var(--rule); }
.facts dt { font: 500 .6875rem/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 6px; }
.facts dd { margin: 0; }
.facts-note { color: var(--ink-3); font-size: .875rem; margin-left: 6px; }
.facts-links { display: flex; flex-wrap: wrap; gap: 8px; }
.case-shots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin: 16px auto clamp(40px, 6vw, 72px); }
.case-body { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: clamp(24px, 5vw, 72px); padding-bottom: clamp(56px, 8vw, 104px); }
.toc { position: sticky; top: 96px; align-self: start; }
.toc-h { font: 500 .6875rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 12px; }
.toc a { display: block; padding: 6px 0 6px 12px; border-left: 1px solid var(--rule); text-decoration: none; color: var(--ink-2); font-size: .9375rem; }
.toc a:hover, .toc a.on { color: var(--ink); border-left-color: var(--accent); }
.chapters { max-width: 720px; }
.chap { padding: 0 0 40px; margin-bottom: 40px; border-bottom: 1px solid var(--rule); }
.chap:last-child { border-bottom: 0; }
.chap h2 { display: flex; align-items: baseline; gap: 14px; font-size: clamp(1.6rem, 2.8vw, 2.125rem); margin-bottom: 18px; }
.chap-n { font: 400 .8125rem/1 var(--mono); color: var(--accent-ink); }
.chap p { font-size: 1.125rem; color: var(--ink-2); }
.chap strong { color: var(--ink); font-weight: 600; }
.see li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 16px; padding: 12px 0; border-bottom: 1px solid var(--rule); }
.see a { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; min-height: 32px; }
.see span { font: 400 .8125rem/2 var(--mono); color: var(--ink-3); }
.arch { margin: 28px 0 8px; padding: 24px; border: 1px solid var(--rule-2); border-radius: 8px; background: var(--card); }
.arch-flow { display: grid; gap: 28px; position: relative; }
.arch-node { position: relative; padding: 16px 18px; border: 1px solid var(--ink); border-radius: var(--r); background: var(--paper); }
.arch-node:not(:last-child)::after { content: '↓ work   ↑ evidence'; position: absolute; left: 18px; bottom: -24px; font: 400 .6875rem/1 var(--mono); color: var(--ink-3); white-space: pre; }
.arch-node strong { display: block; font: 500 .8125rem/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.arch-node > span { color: var(--ink-2); font-size: .9375rem; }
.arch-me { background: var(--ink); color: var(--paper); }
.arch-me > span { color: var(--on-night-2); }
.chap .arch-me strong { color: var(--paper); }
.arch-parts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.arch-parts li { font: 400 .75rem/1 var(--mono); padding: 7px 8px; border: 1px solid var(--rule-2); border-radius: 3px; background: var(--card); }
.arch figcaption { margin-top: 18px; font-size: .875rem; color: var(--ink-3); }
.next { padding-bottom: clamp(56px, 8vw, 96px); }
.next a { display: grid; gap: 4px; padding: 28px 0; border-top: 1px solid var(--ink); text-decoration: none; }
.next .eyebrow { margin: 0; }
.next-t { display: inline-flex; align-items: center; gap: 10px; font: 400 clamp(1.75rem, 3.6vw, 2.5rem)/1.1 var(--serif); }
.next-s { color: var(--ink-2); }

/* about */
.prose-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: clamp(32px, 6vw, 88px); align-items: start; }
.prose { max-width: 680px; }
.prose h2 { font-size: clamp(1.5rem, 2.6vw, 1.875rem); margin: 44px 0 14px; }
.prose h2:first-child { margin-top: 0; }
.prose p { font-size: 1.125rem; color: var(--ink-2); }
.prose a { color: var(--ink); }
.side { position: sticky; top: 96px; display: grid; gap: 20px; }
.side-card { padding: 22px; border: 1px solid var(--rule); border-radius: 8px; background: var(--card); }
.side-h { font: 500 .75rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; }
.stack li { padding: 7px 0; border-bottom: 1px dashed var(--rule); font-size: .9375rem; }
.stack li:last-child { border-bottom: 0; }
.qf { margin: 0; display: grid; gap: 10px; }
.qf dt { font: 500 .6875rem/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.qf dd { margin: 0; font-size: .9375rem; }
.lmap { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--ink); counter-reset: m; }
.lmap li { position: relative; padding: 22px 24px 26px 0; border-bottom: 1px solid var(--rule); }
.lmap li:not(:nth-child(3n+1)) { padding-left: 24px; border-left: 1px solid var(--rule); }
.lmap-n { font: 400 .75rem/1 var(--mono); color: var(--accent-ink); }
.lmap h3 { font-size: 1.5rem; margin: 10px 0 8px; }
.lmap p { color: var(--ink-2); }
.lmap li:nth-child(5) h3 { color: var(--accent-ink); }

/* notes */
.notes { border-top: 1px solid var(--ink); }
.notes a { display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 4px 24px; padding: 26px 0; border-bottom: 1px solid var(--rule); text-decoration: none; }
.notes time { grid-row: span 2; font: 400 .8125rem/2.1 var(--mono); color: var(--ink-3); }
.note-t { font: 400 clamp(1.4rem, 2.4vw, 1.75rem)/1.2 var(--serif); }
.notes a:hover .note-t { color: var(--accent-ink); }
.note-d { color: var(--ink-2); }
.note-body { padding-bottom: clamp(56px, 8vw, 96px); }
.note-body p { font-family: var(--serif); font-size: 1.3125rem; line-height: 1.6; color: var(--ink); }
.sig { font-style: italic; color: var(--ink-2) !important; }

/* contact */
.contact { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 80px); align-items: start; padding-bottom: clamp(56px, 8vw, 96px); }
.form { display: grid; gap: 20px; }
.field label { display: block; font-weight: 500; margin-bottom: 8px; }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; padding: 12px 14px; border: 1px solid var(--rule-2); border-radius: var(--r); background: var(--card); color: var(--ink); font: 400 1rem/1.4 var(--sans); }
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--ink); }
.field [aria-invalid="true"] { border-color: var(--accent); }
.hint { font-size: .875rem; color: var(--ink-3); margin-top: 6px; }
.form-err { color: var(--accent-ink); font-weight: 500; }
.form .btn { justify-self: start; }
.contact-side { display: grid; gap: 16px; }

/* footer */
.site-f { background: var(--night); color: var(--on-night-2); padding: 56px 0 32px; }
.f-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px 48px; padding-bottom: 32px; border-bottom: 1px solid #3a362e; }
.f-line { font: 400 1.25rem/1.45 var(--serif); color: var(--on-night); max-width: 34ch; }
.f-links { display: flex; flex-wrap: wrap; gap: 0 20px; align-content: start; max-width: 420px; }
.f-links a { display: inline-flex; align-items: center; min-height: 44px; color: var(--on-night-2); text-decoration: none; }
.f-links a:hover { color: var(--accent-night); }
.f-small { margin-top: 24px; font-size: .8125rem; }
.site-f :focus-visible { outline-color: var(--accent-night); }

/* reveal — only when JS is on and motion is welcome */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s cubic-bezier(.2, .7, .2, 1); }
  .js .reveal.is-in { opacity: 1; transform: none; }
}

/* responsive */
@media (max-width: 1024px) {
  .modes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .now-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .now-col:nth-child(3) { padding-left: 0; border-left: 0; }
  .now-col:nth-child(n+3) { border-top: 1px solid var(--rule); }
}
@media (max-width: 900px) {
  .hero-grid, .net, .prose-grid, .contact { grid-template-columns: 1fr; }
  .hero-lede { max-width: 46ch; }
  .short, .principles, .lmap { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .short li, .pr, .lmap li { padding-left: 0 !important; border-left: 0 !important; padding-right: 20px; }
  .short li:nth-child(even), .pr:nth-child(even), .lmap li:nth-child(even) { padding-left: 20px !important; border-left: 1px solid var(--rule) !important; }
  .case-body { grid-template-columns: 1fr; }
  .toc { display: none; }
  .side { position: static; }
}
@media (max-width: 640px) {
  body { font-size: 1rem; }
  .short, .principles, .lmap, .proof-rail, .fails, .case-shots, .facts, .modes, .now-grid { grid-template-columns: 1fr; }
  .short li, .pr, .lmap li, .now-col, .short li:nth-child(even), .pr:nth-child(even), .lmap li:nth-child(even) { padding: 20px 0 !important; border-left: 0 !important; }
  .now-col { border-top: 1px solid var(--rule); }
  .now-col:first-child { border-top: 0; }
  .prow-link { grid-template-columns: 36px minmax(0, 1fr); }
  .prow-go { grid-column: 2; justify-self: start; }
  .notes a { grid-template-columns: 1fr; }
  .notes time { grid-row: auto; line-height: 1.4; }
  .legend dl div { grid-template-columns: 1fr; gap: 4px; }
  .ledger li { flex-wrap: wrap; }
  .ctas .btn { flex: 1 1 auto; justify-content: center; }
  .note-body p { font-size: 1.1875rem; }
}
@media print { .site-h, .talk, .site-f, .nav-btn { display: none; } .js .reveal { opacity: 1; transform: none; } }