/* jblaker.com — The Curious Builder. Tokens, components, case-study template. */
/* The Curious Builder — shared system for the three homepage studies.
   Base: BRIEF-design-v1.0.pdf. Overrides: BRIEF-addendum-digital-first.md (80/15/5, olive signature).
   Studies differ only via body class: study-a, study-b (light), study-c (dark). */
:root {
  --ivory: #F6F3EC; --ivory-2: #EFEBE2; --white: #FFFFFF;
  --ink: #1F2422; --ink-2: #5A605C; --ink-3: #8A908C;
  --olive: #4A5A38; --olive-2: #3E442E; --olive-text: #465536; --olive-tint: #EEF0E8; --olive-line: #B9C2A6;
  --tan: #B08B5B; --tan-text: #7E6239;
  --line: #DAD6C9; --line-2: #E8E4DA;
  --font-head: "Inter Tight", "Inter Display", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --hero: clamp(2.25rem, 1.3rem + 2.9vw, 4.25rem);
  --h2: clamp(1.625rem, 1.2rem + 1.3vw, 2.375rem);
  --h3: clamp(1.25rem, 1.1rem + 0.6vw, 1.625rem);
  --body: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  --meta: 0.75rem;
  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px; --s7: 48px; --s8: 64px; --s9: 96px;
  --max: 1200px; --read: 720px; --gutter: clamp(20px, 3vw, 32px);
  --r: 3px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --t-micro: 160ms; --t-card: 240ms; --t-shared: 360ms;
  /* surfaces (light) */
  --bg: var(--ivory); --fg: var(--ink); --fg-2: var(--ink-2); --surface: var(--white); --rule: var(--line);
  --accent: var(--olive); --accent-text: var(--olive-text); --accent-tint: var(--olive-tint); --on-accent: var(--ivory);
}
.study-c {
  --bg: #17191A; --fg: #ECE8DF; --fg-2: #A9ADA8; --surface: #1F2322; --rule: #2E3331;
  --accent: #6F8655; --accent-text: #A6B88A; --accent-tint: #242A24; --on-accent: #0F1210; --olive-line: #3F4A38;
  --line-2: #262B29;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 var(--body)/1.6 var(--font-body); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-head); font-weight: 600; line-height: 1.08; letter-spacing: -0.025em; margin: 0; }
p { margin: 0 0 1em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; background: var(--surface); padding: 8px 12px; z-index: 100; }
.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.label { font: 500 var(--meta)/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-text); margin: 0 0 var(--s4); }
.meta { font: 400 var(--meta)/1.6 var(--font-mono); letter-spacing: .02em; color: var(--fg-2); }
.draft { color: var(--tan-text); }  .study-c .draft { color: #C9A878; }
.ulink { text-decoration: none; background: linear-gradient(currentColor, currentColor) no-repeat 0 100% / 0% 1px; transition: background-size var(--t-micro) var(--ease); padding-bottom: 1px; }
.ulink:hover, .ulink:focus-visible { background-size: 100% 1px; }
.cta { font-weight: 600; color: var(--accent-text); text-decoration: none; display: inline-flex; align-items: center; gap: .45em; min-height: 44px; }
.cta .arr { display: inline-block; transition: transform var(--t-micro) var(--ease); }
.cta:hover .arr, .cta:focus-visible .arr { transform: translateX(4px); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5em; min-height: 42px; padding: 0 18px; background: var(--accent); color: var(--on-accent); border: 1px solid transparent; border-radius: var(--r); font: 600 .9rem/1 var(--font-body); text-decoration: none; cursor: pointer; transition: background var(--t-micro) var(--ease), transform var(--t-micro) var(--ease); }
.btn:hover { background: var(--olive-2); } .study-c .btn:hover { background: #7E965F; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--rule); }
.btn.ghost:hover { border-color: var(--fg); background: transparent; }
.rule { border: 0; border-top: 1px solid var(--rule); margin: 0; }

/* Header: existing mark + written name as one home link. */
.hdr { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: var(--s5); position: relative; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font: 600 .95rem/1 var(--font-head); letter-spacing: -0.01em; }
.brand img { height: 32px; width: auto; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: clamp(18px, 2.4vw, 30px); align-items: center; }
.nav a { font-size: .9rem; font-weight: 500; color: var(--fg-2); }
.nav a:hover, .nav a:focus-visible, .nav a[aria-current="page"] { color: var(--fg); }
.menu-btn { display: none; min-height: 40px; padding: 0 12px; background: none; border: 1px solid var(--rule); border-radius: var(--r); font: 500 .9rem/1 var(--font-body); color: var(--fg); cursor: pointer; }
@media (max-width: 760px) {
  .brand span { position: absolute; left: -9999px; }
  .menu-btn { display: inline-flex; align-items: center; }
  .nav { display: none; }
  .nav.open { display: block; position: absolute; left: 0; right: 0; top: 68px; background: var(--bg); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: var(--s3) var(--gutter); z-index: 20; }
  .nav.open ul { flex-direction: column; gap: 0; align-items: stretch; }
  .nav.open a { display: block; padding: 12px 0; font-size: 1.05rem; color: var(--fg); }
}

/* Hero: compact; first project begins inside a 1366×860 viewport. */
.hero { padding-block: var(--s7); display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: var(--s6); align-items: end; }
.hero h1 { font-size: var(--hero); max-width: 11em; }
.hero .intro { margin: var(--s5) 0 0; font-size: 1.0625rem; color: var(--fg-2); max-width: 30em; }
.hero .actions { display: flex; gap: var(--s3); flex-wrap: wrap; margin-top: var(--s5); }
.hero .facts { justify-self: end; display: grid; gap: var(--s2); font: 400 var(--meta)/1.6 var(--font-mono); color: var(--fg-2); letter-spacing: .02em; border-left: 1px solid var(--rule); padding-left: var(--s4); }
.hero .facts b { font-weight: 500; color: var(--fg); }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; } .hero .facts { justify-self: start; border-left: 0; padding-left: 0; grid-template-columns: 1fr 1fr; } }
@media (max-width: 760px) { .hero { padding-block: var(--s6); } }

/* Hero reveal: 8px rise, once; plain text stays inside the h1. */
.rv { display: inline-block; }
.js .rv { opacity: 0; transform: translateY(8px); }
.js.ready .rv { opacity: 1; transform: none; transition: opacity 300ms var(--ease), transform 300ms var(--ease); transition-delay: calc(var(--i, 0) * 55ms); }

.sec { padding-block: var(--s8); }
.sec-head { display: flex; justify-content: space-between; align-items: baseline; gap: var(--s5); margin-bottom: var(--s6); border-top: 1px solid var(--rule); padding-top: var(--s5); }
.sec-head h2 { font-size: var(--h2); }
.sec-head .label { margin: 0; }
@media (max-width: 760px) { .sec { padding-block: var(--s7); } }

/* Project preview: rectangular frame, hairline, 3px radius. Title / sentence / contribution / link in fixed positions. */
.previews { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s6); }
.preview { position: relative; display: grid; gap: var(--s4); text-decoration: none; color: inherit; align-content: start; }
.preview .frame { position: relative; border: 1px solid var(--rule); border-radius: var(--r); overflow: hidden; background: var(--surface); aspect-ratio: 4 / 3; display: grid; place-items: center; }
.frame img { position: absolute; inset: 7%; width: 86%; height: 86%; max-width: none; max-height: none; object-fit: contain; transition: transform var(--t-card) var(--ease); }
.preview:hover .frame img, .preview:focus-visible .frame img { transform: translateY(-4px); }
.preview .frame.equip { background: #E9ECE4; } .study-c .preview .frame.equip { background: #21271F; }
.preview .frame.jet { background: #E3E6EC; } .study-c .preview .frame.jet { background: #20252B; }
.preview h3 { font-size: var(--h3); display: flex; align-items: baseline; gap: .4em; }
.preview h3 .arr { font-size: .7em; display: inline-block; transition: transform var(--t-micro) var(--ease); color: var(--accent-text); }
.preview:hover h3 .arr, .preview:focus-visible h3 .arr { transform: translateX(4px); }
.preview .sentence { margin: 0; color: var(--fg); }
.preview .meta { display: block; }
.status { display: inline-block; padding: 1px 8px; border: 1px solid var(--rule); border-radius: 999px; font: 500 .7rem/1.7 var(--font-mono); letter-spacing: .04em; color: var(--fg-2); vertical-align: middle; }
@media (max-width: 760px) { .previews { grid-template-columns: 1fr; gap: var(--s7); } }

/* Signature A: evidence reveal. At rest image + metadata. Hover/focus: one verified insight beside the detail. Touch: visible at rest. */
.insight { position: absolute; left: var(--s4); right: var(--s4); bottom: var(--s4); background: var(--surface); border: 1px solid var(--rule); border-left: 2px solid var(--accent); padding: 10px 12px; font-size: .8125rem; line-height: 1.45; color: var(--fg); opacity: 0; transform: translateY(6px); transition: opacity var(--t-card) var(--ease), transform var(--t-card) var(--ease); pointer-events: none; }
.insight b { display: block; font: 500 .68rem/1.6 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-text); }
.preview:hover .insight, .preview:focus-visible .insight { opacity: 1; transform: none; }
@media (hover: none), (max-width: 760px) { .insight { opacity: 1; transform: none; } }

/* Signature B: artifact beside the decision it informed. */
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s3); }
.pair figure { margin: 0; }
.pair .frame { aspect-ratio: 3 / 4; }
.pair figcaption { margin-top: var(--s2); }

/* Signature C: two labelled real states in a stable frame. */
.states .frame img { transition: opacity var(--t-shared) var(--ease), transform var(--t-card) var(--ease); }
.states .frame img[data-state="after"] { opacity: 0; }
.states.show-after .frame img[data-state="before"] { opacity: 0; }
.states.show-after .frame img[data-state="after"] { opacity: 1; }
.state-btns { display: inline-flex; border: 1px solid var(--rule); border-radius: var(--r); overflow: hidden; margin-top: var(--s3); }
.state-btn { min-height: 36px; padding: 0 14px; border: 0; background: transparent; font: 500 .8125rem/1 var(--font-body); color: var(--fg-2); cursor: pointer; }
.state-btn + .state-btn { border-left: 1px solid var(--rule); }
.state-btn[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }

/* Evidence map (PDF p.31): four nodes, lines draw once, detail in a stable area. */
.emap-wrap { display: grid; grid-template-columns: 5fr 7fr; gap: var(--s8); align-items: start; }
.emap { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s3); position: relative; }
.enode { text-align: left; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--r); padding: var(--s4); min-height: 92px; cursor: pointer; font: inherit; color: inherit; transition: border-color var(--t-micro) var(--ease), background var(--t-micro) var(--ease); position: relative; z-index: 1; }
.enode .label { margin-bottom: 6px; }
.enode strong { display: block; font: 500 .95rem/1.35 var(--font-head); letter-spacing: -0.01em; }
.enode:hover { border-color: var(--accent); }
.enode[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-tint); }
.emap-lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; }
.emap-lines path { fill: none; stroke: var(--olive-line); stroke-width: 1.5; stroke-dasharray: 1600; stroke-dashoffset: 1600; }
.emap-lines.draw path { animation: edraw 900ms var(--ease) forwards; }
@keyframes edraw { to { stroke-dashoffset: 0; } }
.edetail { margin-top: var(--s4); min-height: 6em; padding: var(--s4) var(--s5); border: 1px solid var(--rule); border-left: 2px solid var(--accent); border-radius: var(--r); background: var(--surface); }
.edetail .label { margin-bottom: var(--s2); }
.edetail p { margin: 0; font-size: .95rem; }
@media (max-width: 900px) { .emap-wrap { grid-template-columns: 1fr; gap: var(--s6); } }
@media (max-width: 760px) { .emap { grid-template-columns: 1fr; } .emap-lines { display: none; } }

/* About preview, contact, footer */
.about { display: grid; grid-template-columns: 7fr 4fr; gap: var(--s8); align-items: start; }
.about figure { max-width: 360px; justify-self: end; }
.about figure { margin: 0; }
.about .frame { border: 1px solid var(--rule); border-radius: var(--r); overflow: hidden; aspect-ratio: 4 / 5; }
.about .frame { position: relative; }
.about .frame img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.about figcaption { margin-top: var(--s2); }
@media (max-width: 760px) { .about { grid-template-columns: 1fr; gap: var(--s6); } }
.contact { display: grid; grid-template-columns: 5fr 7fr; gap: var(--s8); }
.contact h2 { max-width: 12em; margin-bottom: var(--s4); }
.contact .ways { display: flex; gap: var(--s5); margin-top: var(--s4); font-weight: 500; }
.form { display: grid; gap: var(--s4); }
.form label { display: grid; gap: 6px; font: 500 .8125rem/1.3 var(--font-body); color: var(--fg-2); }
.form input, .form textarea { font: inherit; font-size: 1rem; color: var(--fg); padding: 10px 12px; border: 1px solid var(--rule); border-radius: var(--r); background: var(--surface); width: 100%; transition: border-color var(--t-micro) var(--ease); }
.form input:hover, .form textarea:hover { border-color: var(--fg-2); }
.form input:focus, .form textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); }
.form .btn { justify-self: start; }
@media (max-width: 760px) { .contact { grid-template-columns: 1fr; gap: var(--s6); } .form .row { grid-template-columns: 1fr; } }
.ftr { padding: var(--s6) 0 var(--s7); display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s4) var(--s6); font-size: .85rem; color: var(--fg-2); border-top: 1px solid var(--rule); }
.ftr ul { list-style: none; margin: 0; padding: 0; display: flex; gap: var(--s5); }

/* Stacked rows: one project per row, 7/5 split; becomes a 2-up grid later by changing .previews only */
.stacked .previews { grid-template-columns: 1fr; gap: var(--s7); }
.stacked .preview { grid-template-columns: 7fr 5fr; gap: var(--s6); align-items: start; }
.stacked .preview .frame { aspect-ratio: 16 / 10; }
.stacked .preview .text { display: grid; gap: var(--s3); align-content: start; padding-top: var(--s2); }
.stacked .preview + .preview { border-top: 1px solid var(--rule); padding-top: var(--s7); }
@media (max-width: 760px) { .stacked .preview { grid-template-columns: 1fr; } .stacked .preview .frame { aspect-ratio: 4 / 3; } }
.preview .text { display: grid; gap: var(--s2); }

/* Study B: hairline rail + evidence captions; Swiss column marks on section heads */
.study-b .sec-head { grid-template-columns: 1fr; }
.study-b .label::before { content: ""; display: inline-block; width: 16px; height: 1px; background: var(--accent); vertical-align: middle; margin-right: 10px; }
.study-b .previews { grid-template-columns: 1fr; gap: var(--s7); }
.study-b .preview { grid-template-columns: 7fr 5fr; gap: var(--s6); align-items: start; }
.study-b .preview .text { display: grid; gap: var(--s3); align-content: start; }
.study-b .preview .text .facts { display: grid; grid-template-columns: auto 1fr; column-gap: var(--s4); row-gap: 6px; font-size: .875rem; margin-top: var(--s2); }
.study-b .preview .text .facts dt { font: 500 var(--meta)/1.7 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--fg-2); }
.study-b .preview .text .facts dd { margin: 0; }
@media (max-width: 760px) { .study-b .preview { grid-template-columns: 1fr; } }

/* Study C: dark; larger hero type; alternating 7/5 previews */
.study-c .hero { --hero: clamp(2.5rem, 1.4rem + 3.6vw, 5rem); padding-block-end: var(--s8); }
.study-c .previews { grid-template-columns: 7fr 5fr; align-items: start; }
.study-c .preview .frame { aspect-ratio: 16 / 11; }
.study-c .preview.jet .frame { aspect-ratio: 4 / 5; }
.study-c .insight { background: #23282A; }
@media (max-width: 760px) { .study-c .previews { grid-template-columns: 1fr; } }

@media (prefers-reduced-motion: reduce) {
  .js .rv { opacity: 1 !important; transform: none !important; transition: none !important; }
  .emap-lines path { stroke-dashoffset: 0 !important; animation: none !important; }
  .insight, .frame img, .states .frame img, .cta .arr, .preview h3 .arr, .btn { transition: none !important; }
}


/* A3 overrides on cb.css: critique round 1 applied. */
:root { --h2: 2.5rem; --h3: 1.5rem; --meta: 0.75rem; }
.a3 .hero { grid-template-columns: minmax(0, 9fr) minmax(0, 3fr); padding-block: var(--s6) 40px; }
.a3 .hero h1 { max-width: 10em; }
.a3 .hero .intro { max-width: 36em; }
.a3 .sec-head { border-top: 1px solid var(--rule); padding-top: var(--s5); margin-bottom: var(--s5); flex-wrap: wrap; }
.a3 .sec-head h2 { letter-spacing: -0.03em; }
.a3 .sec { padding-block: var(--s8); }
.a3 .sec.work { padding-block: var(--s6) var(--s8); }

/* Work rows. The h3 is the link; a stretched pseudo-element makes the whole row clickable. */
.a3 .work .preview { display: grid; grid-template-columns: 7fr 5fr; gap: var(--s6); align-items: start; position: relative; }
.a3 .work .preview + .preview { margin-top: var(--s7); padding-top: var(--s7); border-top: 1px solid var(--rule); }
.a3 .work .frame { aspect-ratio: 16 / 10; background: var(--accent-tint); border: 1px solid var(--rule); border-radius: var(--r); display: flex; align-items: center; justify-content: center; gap: 4%; padding: 4% 4%; position: relative; overflow: hidden; }
.a3 .work .frame img { position: static; inset: auto; width: auto; height: 100%; max-height: 100%; max-width: none; object-fit: contain; transition: transform var(--t-card) var(--ease); }
.a3 .work .preview:hover .frame img, .a3 .work .preview:focus-within .frame img { transform: translateY(-3px); }
.a3 .work .frame.jet { background: var(--accent-tint); }
.a3 .work .text { display: grid; gap: var(--s3); align-content: start; padding-top: var(--s1); }
.a3 .work h3 { display: flex; align-items: baseline; gap: .4em; }
.a3 .work h3 a { text-decoration: none; }
.a3 .work h3 a.stretch::after { content: ""; position: absolute; inset: 0; }
.a3 .work .preview:hover .arr, .a3 .work .preview:focus-within .arr { transform: translateX(4px); }
.a3 .work .arr { display: inline-block; font-size: .7em; color: var(--accent-text); transition: transform var(--t-micro) var(--ease); }
.a3 .work .preview:focus-within { outline: 2px solid var(--accent); outline-offset: 6px; border-radius: 2px; }
.a3 .work .preview:focus-within h3 a:focus-visible { outline: none; }
.a3 .finding { margin: var(--s2) 0 0; padding: var(--s3) var(--s4); border-left: 2px solid var(--accent); background: var(--surface); border-top: 1px solid var(--rule); border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); border-radius: 0 var(--r) var(--r) 0; font-size: .9rem; line-height: 1.5; }
.a3 .finding .label { display: block; margin-bottom: 4px; }
.a3 .work .screens { color: var(--ink-2); }
/* Demoted in-progress row */
.a3 .preview.minor { grid-template-columns: 3fr 9fr; gap: var(--s5); }
.a3 .preview.minor .frame { aspect-ratio: 4 / 3; padding: 8%; }
.a3 .preview.minor h3 { font-size: 1.125rem; }
.a3 .preview.minor .sentence { font-size: .95rem; color: var(--fg-2); }
.a3 .status { font-size: .75rem; }

/* Evidence map as tabs */
.a3 .emap-wrap { grid-template-columns: 5fr 7fr; }
@media (max-width: 900px) { .a3 .emap-wrap { grid-template-columns: 1fr; gap: var(--s6); } }
.a3 .emap { gap: var(--s3); }
.a3 .enode { display: block; width: 100%; }
.a3 .enode .label { display: block; }
.a3 .enode[aria-selected="true"] { border-color: var(--accent); background: var(--accent-tint); }
.a3 .enode-detail { display: none; }
.a3 .edetail { min-height: 0; margin-top: var(--s3); border-top: 2px solid var(--accent); border-left: 1px solid var(--rule); }
.a3 .edetail p { margin: 0; }
.a3 .emap .edetail { grid-column: 1 / -1; }   /* when JS moves the panel into the list on small screens */
.vh { position: absolute; left: -9999px; }
.sep { }
.a3 .ferr { display: block; font-size: .8rem; line-height: 1.3; color: #8A2E2E; min-height: 1.3em; }
.a3 [aria-invalid="true"] { border-color: #8A2E2E; }
.a3 .menu-btn, .a3 .btn.ghost, .a3 .enode { border-color: #8F948F; }
.a3 .enode[aria-selected="true"] { border-color: var(--accent); }

/* About: experience strip, smaller top-aligned photo */
.a3 .about { grid-template-columns: 8fr 4fr; align-items: start; }
@media (max-width: 760px) { .a3 .about { grid-template-columns: 1fr; } }
.a3 .about figure { max-width: 320px; }
.a3 .exp { list-style: none; margin: var(--s4) 0 var(--s4); padding: 0; border-top: 1px solid var(--rule); }
.a3 .exp li { display: flex; justify-content: space-between; gap: var(--s4); padding: 10px 0; border-bottom: 1px solid var(--rule); font-size: .95rem; }

/* Contact and forms: 3:1 borders, required cue, status */
.a3 .form input, .a3 .form textarea { border-color: #7C827E; }
.a3 .req { font-weight: 400; color: var(--fg-2); }
.a3 .form-status { margin: 0; min-height: 1.5em; font-size: .9rem; }
.a3 .form-status.ok { color: var(--accent-text); }
.a3 .form-status.err { color: #8A2E2E; }
.a3 .contact h3 { font-size: var(--h3); margin-bottom: var(--s3); }

/* Footer targets and 320px */
.a3 .ftr a { display: inline-block; padding: 11px 0; }
.a3 .ftr ul { flex-wrap: wrap; }

/* Mobile */
@media (max-width: 760px) {
  .a3 .hero { grid-template-columns: 1fr; padding-block: var(--s5) var(--s6); }
  .a3 .work .preview, .a3 .preview.minor { grid-template-columns: 1fr; }
  .a3 .work .frame { aspect-ratio: 4 / 3; }
  .a3 .preview.minor { grid-template-columns: 1fr 2fr; gap: var(--s4); }
  .a3 .preview.minor .frame { aspect-ratio: 1; }
  .a3 .about figure { max-width: none; }
}
/* JS-gated nav hiding so no-JS users keep the nav */
@media (max-width: 760px) { .nav { display: block; } .js .nav { display: none; } .js .nav.open { display: block; } }

@media (prefers-reduced-motion: reduce) {
  .ulink, .a3 .work .frame img, .a3 .work .arr, .btn, .cta .arr { transition: none !important; }
}

/* Round-3 design items */
.a3 .evidence { margin: var(--s3) 0 0; display: grid; gap: 8px; }
.a3 .evidence .label { margin: 0 0 2px; }
.a3 .bar { display: grid; grid-template-columns: minmax(0, 1fr) 2fr auto; align-items: center; gap: var(--s3); font-size: .8125rem; color: var(--fg-2); }
.a3 .bar-track { height: 8px; background: var(--stone-2); border-radius: 2px; overflow: hidden; }
.a3 .bar-fill { display: block; height: 100%; width: var(--v); background: var(--accent); transform-origin: left; }
.js.ready .a3 .bar-fill { animation: grow 600ms var(--ease) both; }
@keyframes grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.a3 .bar-num { font-family: var(--font-mono); font-size: .75rem; color: var(--fg); min-width: 4em; text-align: right; }
.a3 .also { margin: var(--s7) 0 0; padding-top: var(--s5); border-top: 1px solid var(--rule); color: var(--fg-2); font-size: .95rem; }
.a3 .also a { color: var(--fg); font-weight: 500; }
.a3 .emap.static { list-style: none; margin: 0; padding: 0; }
.a3 .emap.static .enode { cursor: default; min-height: 0; }
.a3 .emap.static .enode p { margin: 8px 0 0; font-size: .9rem; color: var(--fg-2); }
.a3 .emap.static .enode:hover { border-color: #8F948F; }
.a3 .emap-wrap > p { font-size: 1.0625rem; }
@media (max-width: 760px) {
  .a3 .hero { padding-block: var(--s4) var(--s5); }
  .a3 .hero h1 { font-size: 2.125rem; }
  .a3 .hero .intro { font-size: .975rem; margin-top: var(--s4); }
  .a3 .hero .actions { margin-top: var(--s4); }
  .a3 .sec.work { padding-block: var(--s5) var(--s7); }
  .a3 .bar { grid-template-columns: 1fr; gap: 4px; } .a3 .bar-num { text-align: left; }
}
@media (prefers-reduced-motion: reduce) { .js.ready .a3 .bar-fill { animation: none; } }

.a3 .work .preview .frame { grid-column: 1; grid-row: 1; }
.a3 .work .preview .evidence { grid-column: 1; grid-row: 2; }
.a3 .work .preview .text { grid-column: 2; grid-row: 1 / span 2; }
@media (max-width: 760px) { .a3 .work .preview .frame, .a3 .work .preview .evidence, .a3 .work .preview .text { grid-column: auto; grid-row: auto; } .a3 .work .preview .evidence { order: 3; } }


/* Case-study template (PDF §13–14): executive snapshot, uncertainty, evidence, decisions, result/limits/next. */
.cs-mast { display: grid; grid-template-columns: 7fr 5fr; gap: var(--s7); align-items: start; padding-block: var(--s6) var(--s7); }
.cs-mast h1 { font-size: clamp(2rem, 1.2rem + 2.4vw, 3.25rem); max-width: 14em; margin: var(--s3) 0 var(--s4); }
.cs-mast .one { font-size: 1.125rem; color: var(--fg-2); max-width: 30em; }
.cs-mast .art { --h: clamp(240px, 26vw, 360px); height: var(--h); background: var(--accent-tint); border: 1px solid var(--rule); border-radius: var(--r); display: flex; justify-content: center; align-items: center; gap: 4%; padding: 4%; overflow: hidden; }
.cs-mast .art img { height: calc(var(--h) * .86); width: auto; max-width: 30%; object-fit: contain; }
.snap { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s3) var(--s5); border-top: 1px solid var(--rule); padding-top: var(--s4); margin-top: var(--s5); font-size: .9rem; }
.snap div .label { margin: 0 0 2px; }
.snap .wide { grid-column: 1 / -1; }
@media (max-width: 860px) { .cs-mast { grid-template-columns: 1fr; gap: var(--s5); } }

/* Jump nav (optional reading tool, PDF p.28) */
.jump { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.jump ul { list-style: none; margin: 0; padding: 0; display: flex; gap: var(--s5); overflow-x: auto; scrollbar-width: none; }
.jump li a { display: inline-block; padding: 12px 0; font: 500 .8125rem/1 var(--font-body); color: var(--fg-2); white-space: nowrap; text-decoration: none; border-bottom: 2px solid transparent; }
.jump li a:hover, .jump li a:focus-visible { color: var(--fg); }
.jump li a[aria-current="true"] { color: var(--fg); border-bottom-color: var(--accent); }

/* Reading body */
.cs { padding-block: var(--s7); }
.cs .read { max-width: var(--read); }
.cs h2 { font-size: var(--h2); margin: 0 0 var(--s4); scroll-margin-top: 64px; }
.cs h3 { font-size: 1.125rem; margin: var(--s6) 0 var(--s3); }
.cs p, .cs li { font-size: 1.0625rem; }
.cs ul, .cs ol { padding-left: 1.2em; }
.cs li { margin-bottom: 6px; }
.cs .lede { font-size: 1.125rem; color: var(--fg-2); }
.cs + .cs { border-top: 1px solid var(--rule); }

/* Figures: readable crop, caption with what it answered */
.fig { margin: var(--s6) 0; max-width: 920px; }
.fig .frame { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--r); overflow: hidden; display: grid; place-items: center; }
.fig .frame img { width: 100%; height: auto; }
.fig figcaption { margin-top: var(--s2); font-size: .875rem; color: var(--fg-2); max-width: var(--read); }
.fig figcaption b { font-weight: 500; color: var(--fg); }
.fig.wide { max-width: none; }
.screens3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s4); }
.screens3 .frame { --h: clamp(360px, 30vw, 520px); height: var(--h); background: var(--accent-tint); padding: 8%; }
.screens3 .frame img { height: calc(var(--h) * .84); width: auto; max-width: 100%; object-fit: contain; }
@media (max-width: 760px) { .screens3 { grid-template-columns: 1fr; max-width: 320px; } }

/* Survey + interview stats */
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); margin: var(--s4) 0 var(--s5); }
.stat { border: 1px solid var(--rule); border-radius: var(--r); background: var(--surface); padding: var(--s4); }
.stat .label { margin-bottom: 6px; }
.stat .bar { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; font-size: .875rem; color: var(--fg-2); margin-top: 8px; }
.stat .bar-track { height: 8px; background: var(--stone-2); border-radius: 2px; overflow: hidden; grid-column: 1 / -1; }
.stat .bar-fill { display: block; height: 100%; width: var(--v); background: var(--accent); }
.stat .bar-num { font-family: var(--font-mono); font-size: .75rem; color: var(--fg); }
@media (max-width: 600px) { .stats { grid-template-columns: 1fr; } }

/* Evidence → decision block (PDF p.15) */
.e2d { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--s3); margin: var(--s5) 0; }
.e2d > div { border: 1px solid var(--rule); border-radius: var(--r); background: var(--surface); padding: var(--s4); font-size: .9rem; }
.e2d > div .label { margin-bottom: 6px; }
.e2d .decision { border-left: 2px solid var(--accent); }
@media (max-width: 760px) { .e2d { grid-template-columns: 1fr; } }

/* Two labelled states (PDF alt. B) */
.states2 { margin: var(--s5) 0; }
.states2 .frame { position: relative; aspect-ratio: 4 / 3; background: var(--accent-tint); border: 1px solid var(--rule); border-radius: var(--r); overflow: hidden; }
.states2 .frame img { position: absolute; inset: 6%; width: 88%; height: 88%; object-fit: contain; transition: opacity var(--t-shared) var(--ease); }
.states2 .frame img[data-state="after"] { opacity: 0; }
.states2.show-after .frame img[data-state="before"] { opacity: 0; }
.states2.show-after .frame img[data-state="after"] { opacity: 1; }
.states2 .state-btns { margin-top: var(--s3); }
.state-btn { border-color: #8F948F; }

/* Pull quote */
.quote { margin: var(--s5) 0; padding: var(--s4) var(--s5); border-left: 2px solid var(--accent); background: var(--surface); border-top: 1px solid var(--rule); border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); border-radius: 0 var(--r) var(--r) 0; }
.quote p { margin: 0 0 8px; font-size: 1.0625rem; }
.quote cite { font-style: normal; font-size: .8125rem; color: var(--fg-2); }

/* Outcomes / limits */
.limits { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4); margin-top: var(--s4); }
.limits > div { border: 1px solid var(--rule); border-radius: var(--r); background: var(--surface); padding: var(--s4); font-size: .95rem; }
@media (max-width: 600px) { .limits { grid-template-columns: 1fr; } }

/* Next project */
.next { border-top: 1px solid var(--rule); padding-block: var(--s6) var(--s8); display: flex; justify-content: space-between; align-items: baseline; gap: var(--s5); flex-wrap: wrap; }
.next a { font: 600 1.25rem/1.2 var(--font-head); letter-spacing: -0.02em; }
@media (prefers-reduced-motion: reduce) { .states2 .frame img { transition: none; } }

/* Reset the home-page .frame img positioning for case-study figures */
.cs .fig .frame { position: relative; }
.cs .fig .frame img { position: static; inset: auto; width: 100%; height: auto; max-width: 100%; max-height: none; }
.cs .screens3 .frame { position: relative; display: grid; place-items: center; }
.cs .screens3 .frame img { position: static; inset: auto; height: calc(var(--h) * .84); width: auto; max-width: 100%; max-height: none; }
.cs .states2 .frame img { position: absolute; inset: 6%; width: 88%; height: 88%; max-width: none; max-height: none; }

/* ===== Signature motion (Linear-precise). All of it is enhancement: content is present at rest. ===== */
/* 1. Orchestrated hero: line 1 → olive rule draws → line 2 → intro → actions. 900ms total, once. */
.hero-seq { display: block; }
.hero-seq .rv { display: block; }
.hero-rule { display: block; width: 48px; height: 2px; background: var(--accent); margin: 10px 0 10px; transform-origin: left; }
.js .hero-rule { transform: scaleX(0); }
.js.ready .hero-rule { transform: scaleX(1); transition: transform 380ms var(--ease) 260ms; }
.js.ready .rv.l0 { transition-delay: 0ms; }
.js.ready .rv.l1 { transition-delay: 80ms; }
.js.ready .rv.l2 { transition-delay: 480ms; }
.js.ready .rv.l3 { transition-delay: 620ms; }
.js.ready .rv.l4 { transition-delay: 720ms; }

/* 2. Live detail on the Equip card: a bracket draws around the Data Policy header the finding shaped. */
.shot { position: relative; display: inline-block; height: 100%; }
.shot img { height: 100%; width: auto; display: block; }
.bracket { position: absolute; left: 4%; right: 4%; top: 9%; height: 11%; width: 92%; overflow: visible; pointer-events: none; }
.bracket rect { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 400; stroke-dashoffset: 400; opacity: 0; transition: stroke-dashoffset 420ms var(--ease), opacity 120ms var(--ease); }
.preview.live:hover .bracket rect, .preview.live:focus-within .bracket rect { stroke-dashoffset: 0; opacity: 1; }
.preview.live:hover .finding, .preview.live:focus-within .finding { border-left-color: var(--accent); }
.preview.live .finding { transition: border-left-color var(--t-micro) var(--ease), box-shadow var(--t-card) var(--ease); }
.preview.live:hover .finding, .preview.live:focus-within .finding { box-shadow: inset 2px 0 0 var(--accent); }
@media (hover: none) { .bracket rect { stroke-dashoffset: 0; opacity: .9; } }

/* 3. Evidence trail: a decision lights the finding it came from and draws a line between them. */
.trail-row { margin: 10px 0 0; display: flex; gap: 8px; flex-wrap: wrap; }
.trail { min-height: 32px; padding: 0 10px; border: 1px solid #8F948F; border-radius: 999px; background: var(--surface); color: var(--fg); font: 500 .78rem/1 var(--font-body); cursor: pointer; transition: background var(--t-micro) var(--ease), border-color var(--t-micro) var(--ease), color var(--t-micro) var(--ease); }
.trail::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); margin-right: 8px; vertical-align: 1px; }
.trail:hover { border-color: var(--accent); }
.trail[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.trail[aria-pressed="true"]::before { background: var(--on-accent); }
.ev { padding: 2px 6px; margin-left: -6px; border-radius: 3px; transition: background var(--t-card) var(--ease), box-shadow var(--t-card) var(--ease); scroll-margin: 120px; }
.ev.lit { background: var(--accent-tint); box-shadow: -3px 0 0 var(--accent); }
.trail-svg { position: absolute; left: 0; top: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; z-index: 5; }
.trail-svg path { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: var(--len, 2000); stroke-dashoffset: var(--len, 2000); }
.trail-svg path.draw { animation: trail-draw 520ms var(--ease) forwards; }
.trail-svg circle { fill: var(--accent); }
@keyframes trail-draw { to { stroke-dashoffset: 0; } }
main { position: relative; }

/* 4. Scroll storytelling: artifacts uncover when reached; bars grow in view; blocks settle 12px. Once. */
.js .io { opacity: 0; transform: translateY(12px); }
.js .io.in { opacity: 1; transform: none; transition: opacity 420ms var(--ease), transform 420ms var(--ease); }
.js .fig.io .frame { clip-path: inset(0 0 100% 0); }
.js .fig.io.in .frame { clip-path: inset(0 0 0 0); transition: clip-path 640ms var(--ease-in-out, cubic-bezier(.65,0,.35,1)) 80ms; }
.js .stats.io .bar-fill { transform: scaleX(0); transform-origin: left; }
.js .stats.io.in .bar-fill { transform: scaleX(1); transition: transform 600ms var(--ease) 200ms; }
.js .e2d.io > div { opacity: 0; transform: translateY(10px); }
.js .e2d.io.in > div { opacity: 1; transform: none; transition: opacity 360ms var(--ease), transform 360ms var(--ease); }
.js .e2d.io.in > div:nth-child(2) { transition-delay: 70ms; } .js .e2d.io.in > div:nth-child(3) { transition-delay: 140ms; }

@media (prefers-reduced-motion: reduce) {
  .js .hero-rule { transform: none; transition: none; }
  .bracket rect { transition: none; }
  .trail-svg path { animation: none; stroke-dashoffset: 0; }
  .js .io, .js .fig.io .frame, .js .stats.io .bar-fill, .js .e2d.io > div { opacity: 1 !important; transform: none !important; clip-path: none !important; transition: none !important; }
}

/* The (c) in the footer. Looks like text; one click opens /door. */
.yr { color: inherit; text-decoration: none; cursor: default; border-radius: 2px; transition: color var(--t-hover) var(--ease); }
.yr:hover, .yr:focus-visible { color: var(--accent); cursor: pointer; }