/* AI Hardware Bible. Layout: topbar (56px, sticky) / sidebar (288px, slide-over < 960px) / main (prose 68ch, wide blocks 1040px). Tokens first, then components. */
:root {
  /* brand */
  --brand-yellow: #FFE94D; --brand-neon: #5CF2BE; --brand-cobalt: #3B6CFF;
  /* dark (graphite night) */
  --bg: #1e1f2b; --bg-deep: #171822; --surface: #252738; --surface-2: #2d3045; --surface-3: #363a52;
  --petrol: #1E465A; --petrol-2: #1d3d4f; --rim: #68828f;
  --ink: #eceef6; --ink-2: #b7bccf; --ink-3: #8b91a8;
  --line: rgba(255,255,255,.09); --line-2: rgba(255,255,255,.16);
  --accent: #FFE94D; --accent-strong: #FFE94D; --accent-ink: #1e1f2b; --accent-soft: rgba(255,233,77,.14);
  --signal: #5CF2BE; --signal-soft: rgba(92,242,190,.14);
  --cobalt: #3B6CFF; --cobalt-text: #8FA9FF;
  --warn: #ff9b7a; --ok: #5CF2BE;
  --grid: rgba(104,130,143,.20); --glow: 0 0 14px rgba(255,233,77,.45);
  --shadow: 0 10px 40px rgba(5,6,12,.5);
  --s1: #5CF2BE; --s2: #FFE94D; --s3: #8FA9FF; --s4: #68a9c4; --s5: #ff9b7a; --s6: #c9b8ff;
  --map-lo: #2a3043; --map-hi: #5CF2BE; --map-land: #2a2d40; --map-stroke: #1e1f2b;
  --font-head: 'Poppins', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --side-w: 288px; --top-h: 56px; --gutter: 16px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f3f0e8; --bg-deep: #e9e5da; --surface: #fbf9f4; --surface-2: #f0ece1; --surface-3: #e4dfd1;
    --petrol: #1E465A; --petrol-2: #1d3d4f; --rim: #4d6672;
    --ink: #1e1f2b; --ink-2: #444860; --ink-3: #6a6f86;
    --line: rgba(30,31,43,.12); --line-2: rgba(30,31,43,.22);
    --accent: #FFE94D; --accent-strong: #b99a00; --accent-ink: #1e1f2b; --accent-soft: rgba(255,233,77,.35);
    --signal: #0b8f69; --signal-soft: rgba(11,143,105,.12);
    --cobalt: #3B6CFF; --cobalt-text: #2b52d1;
    --warn: #b94a28; --ok: #0b8f69;
    --grid: rgba(77,102,114,.22); --glow: 0 0 10px rgba(185,154,0,.35);
    --shadow: 0 10px 30px rgba(30,31,43,.18);
    --s1: #0b8f69; --s2: #c4a400; --s3: #3B6CFF; --s4: #1E465A; --s5: #c4532e; --s6: #7a57d1;
    --map-lo: #e4dfd1; --map-hi: #0b8f69; --map-land: #e0dbcc; --map-stroke: #f3f0e8;
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #f3f0e8; --bg-deep: #e9e5da; --surface: #fbf9f4; --surface-2: #f0ece1; --surface-3: #e4dfd1;
  --petrol: #1E465A; --petrol-2: #1d3d4f; --rim: #4d6672;
  --ink: #1e1f2b; --ink-2: #444860; --ink-3: #6a6f86;
  --line: rgba(30,31,43,.12); --line-2: rgba(30,31,43,.22);
  --accent: #FFE94D; --accent-strong: #b99a00; --accent-ink: #1e1f2b; --accent-soft: rgba(255,233,77,.35);
  --signal: #0b8f69; --signal-soft: rgba(11,143,105,.12);
  --cobalt: #3B6CFF; --cobalt-text: #2b52d1;
  --warn: #b94a28; --ok: #0b8f69;
  --grid: rgba(77,102,114,.22); --glow: 0 0 10px rgba(185,154,0,.35);
  --shadow: 0 10px 30px rgba(30,31,43,.18);
  --s1: #0b8f69; --s2: #c4a400; --s3: #3B6CFF; --s4: #1E465A; --s5: #c4532e; --s6: #7a57d1;
  --map-lo: #e4dfd1; --map-hi: #0b8f69; --map-land: #e0dbcc; --map-stroke: #f3f0e8;
  color-scheme: light;
}

/* base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: auto; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font-head); font-size: 16px; line-height: 1.68; font-weight: 400; overflow-x: hidden; min-height: 100vh; }
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 600; letter-spacing: -0.015em; line-height: 1.15; margin: 0; color: var(--ink); text-wrap: balance; }
p { margin: 0 0 1em; }
a { color: var(--cobalt-text); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--cobalt); }
code, kbd { font-family: var(--font-mono); font-size: .88em; background: var(--surface-2); border: 1px solid var(--line); padding: .08em .35em; }
button { font: inherit; color: inherit; cursor: pointer; }
input, select { font: inherit; color: inherit; }
img, svg { max-width: 100%; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--accent-strong); outline-offset: 2px; }
::selection { background: var(--accent); color: var(--accent-ink); }
.mono { font-family: var(--font-mono); }
.kicker { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); font-weight: 400; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-ink); padding: 8px 12px; z-index: 100; font-family: var(--font-mono); font-size: 13px; border: 0; }
.skip:focus { left: 8px; }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 40; height: var(--top-h); display: flex; align-items: center; gap: 14px; padding: 0 var(--gutter) 0 var(--gutter); background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.topbar::after { content: ""; position: absolute; left: 0; bottom: -1px; height: 1px; width: calc(var(--side-w) - 18px); background: var(--accent-strong); box-shadow: var(--glow); pointer-events: none; }
.brand { display: flex; align-items: baseline; gap: 8px; width: calc(var(--side-w) - 32px); flex: none; text-decoration: none; color: var(--ink); }
.brand b { font-weight: 700; letter-spacing: .14em; font-size: 17px; }
.brand small { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.crumb { min-width: 0; flex: 1; font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.crumb b { color: var(--ink); font-weight: 500; }
.tb-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: transparent; border: 1px solid var(--line-2); color: var(--ink-2); padding: 0; }
.tb-btn:hover { color: var(--ink); border-color: var(--cobalt); }
.tb-btn svg { width: 18px; height: 18px; }
.hamburger { display: none; }
.search { position: relative; width: 260px; flex: none; }
.search input { width: 100%; height: 36px; background: var(--surface); border: 1px solid var(--line-2); padding: 0 10px 0 32px; font-family: var(--font-mono); font-size: 12.5px; color: var(--ink); }
.search input::placeholder { color: var(--ink-3); }
.search input:focus { border-color: var(--cobalt); outline: none; }
.search svg { position: absolute; left: 9px; top: 9px; width: 16px; height: 16px; color: var(--ink-3); pointer-events: none; }
.search-res { position: absolute; top: 42px; right: 0; width: 400px; max-width: calc(100vw - 24px); max-height: 60vh; overflow: auto; background: var(--surface); border: 1px solid var(--rim); box-shadow: var(--shadow); padding: 4px; z-index: 60; }
.search-res[hidden] { display: none; }
.search-res button { display: flex; width: 100%; gap: 8px; align-items: baseline; text-align: left; background: none; border: 0; padding: 8px 10px; color: var(--ink); }
.search-res button[aria-selected="true"], .search-res button:hover { background: var(--surface-3); }
.search-res .t { font-family: var(--font-mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); width: 58px; flex: none; }
.search-res .s { color: var(--ink-3); font-size: 12.5px; margin-left: auto; white-space: nowrap; font-family: var(--font-mono); }
.search-res .none { padding: 10px; color: var(--ink-3); font-family: var(--font-mono); font-size: 12px; }
.prog { display: flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-3); flex: none; }
.prog i { display: block; width: 64px; height: 3px; background: var(--line-2); position: relative; }
.prog i b { position: absolute; left: 0; top: 0; bottom: 0; background: var(--signal); width: 0; transition: width .4s ease; }

/* shell */
.shell { display: grid; grid-template-columns: var(--side-w) minmax(0, 1fr); align-items: start; }
.side { position: sticky; top: var(--top-h); height: calc(100vh - var(--top-h)); overflow-y: auto; padding: 18px 12px 40px 0; border-right: 1px solid var(--line); background: var(--bg); overscroll-behavior: contain; }
.rail { position: absolute; left: 14px; top: 0; width: 1px; background: var(--accent-strong); box-shadow: var(--glow); height: 0; transition: height .35s ease; pointer-events: none; }
.rail::after { content: ""; position: absolute; left: -3px; bottom: -3px; width: 7px; height: 7px; background: var(--accent); border-radius: 50%; box-shadow: var(--glow); }
.nav-part { margin: 0 0 18px; padding-left: 30px; }
.nav-part h2 { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 6px 10px; font-weight: 400; }
.nav-part ul { list-style: none; margin: 0; padding: 0; }
.nav-item { position: relative; display: flex; align-items: center; gap: 8px; width: 100%; text-align: left; background: none; border: 0; padding: 7px 10px; color: var(--ink-2); font-size: 14.5px; line-height: 1.3; text-decoration: none; }
.nav-item:hover { color: var(--ink); background: var(--surface); }
.nav-item[aria-current="page"] { color: var(--ink); background: var(--surface); }
.nav-item[aria-current="page"]::before { content: ""; position: absolute; left: -16px; top: 50%; width: 16px; height: 1px; background: var(--accent-strong); box-shadow: var(--glow); }
.nav-item .ttl { flex: 1; min-width: 0; }
.lv { display: inline-flex; gap: 2px; flex: none; }
.lv i { width: 4px; height: 4px; background: var(--line-2); }
.lv i.on { background: var(--rim); }
.nav-item[aria-current="page"] .lv i.on { background: var(--accent-strong); }
.chk { width: 14px; height: 14px; flex: none; color: var(--signal); opacity: 0; }
.nav-item.read .chk { opacity: 1; }
.main-col { min-width: 0; }
main#view { padding: 0 var(--gutter) 40px; max-width: 1120px; margin: 0 auto; outline: none; overflow-x: clip; transition: opacity .18s ease, transform .18s ease; }
main#view.leaving { opacity: 0; transform: translateY(6px); }
.foot { padding: 24px var(--gutter) 40px; text-align: center; font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-3); border-top: 1px solid var(--line); margin-top: 32px; }
.scrim { display: none; }

@media (max-width: 1100px) { .search { width: 200px; } .prog i { width: 40px; } }
@media (max-width: 959px) {
  :root { --side-w: 300px; }
  .hamburger { display: inline-flex; }
  .topbar::after { width: 100%; }
  .brand { width: auto; }
  .shell { display: block; }
  .side { position: fixed; z-index: 55; top: var(--top-h); bottom: 0; left: 0; width: min(86vw, 320px); height: auto; padding-top: 14px; transform: translateX(-102%); transition: transform .25s ease; box-shadow: none; }
  body.menu-open .side { transform: none; box-shadow: var(--shadow); }
  body.menu-open .scrim { display: block; position: fixed; inset: var(--top-h) 0 0 0; z-index: 50; background: rgba(8,9,16,.55); border: 0; }
  .rail { display: none; }
  .nav-item[aria-current="page"]::before { display: none; }
  .nav-part { padding-left: 14px; }
  .crumb { display: none; }
  .brand { flex: 1; }
  .search { width: auto; flex: 1; min-width: 0; max-width: 260px; }
  .prog span { display: none; }
}
@media (max-width: 540px) {
  .topbar { gap: 8px; }
  .brand small { display: none; }
  .prog { display: none; }
  .search-res { position: fixed; left: var(--gutter); right: var(--gutter); top: calc(var(--top-h) + 4px); width: auto; max-width: none; }
}

/* page header: die-grid texture + wafer notch */
.page { padding-top: 8px; }
.page-head { position: relative; padding: 52px 0 34px; margin: 0 calc(var(--gutter) * -1); padding-left: var(--gutter); padding-right: var(--gutter); overflow: hidden; border-bottom: 1px solid var(--line); isolation: isolate; }
.page-head::before { content: ""; position: absolute; inset: 0; z-index: -2; background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px); background-size: 26px 26px; -webkit-mask-image: linear-gradient(100deg, transparent 15%, #000 100%); mask-image: linear-gradient(100deg, transparent 15%, #000 100%); }
.wafer { position: absolute; z-index: -1; right: -90px; top: -60px; width: 340px; height: 340px; border-radius: 50%; border: 1px solid var(--rim); opacity: .7; background-image: linear-gradient(var(--rim) 1px, transparent 1px), linear-gradient(90deg, var(--rim) 1px, transparent 1px); background-size: 34px 22px; background-position: 6px 4px; box-shadow: inset 0 0 0 10px var(--bg), inset 0 0 0 11px var(--line-2); -webkit-mask-image: radial-gradient(circle, #000 55%, transparent 74%); mask-image: radial-gradient(circle, #000 55%, transparent 74%); pointer-events: none; }
.wafer::after { content: ""; position: absolute; top: 50%; left: -8px; width: 14px; height: 22px; margin-top: -11px; background: var(--bg); border: 1px solid var(--rim); border-radius: 0 14px 14px 0; border-left: 0; }
.page-head .kicker { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.page-head .kicker .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: var(--glow); }
.page-head h1 { font-size: clamp(32px, 5.2vw, 56px); max-width: 18ch; letter-spacing: -0.025em; font-weight: 600; }
.thesis { margin: 18px 0 0; max-width: 60ch; font-size: clamp(18px, 2.2vw, 21px); line-height: 1.5; color: var(--ink-2); }

/* sections + prose */
.section { padding: 40px 0 8px; scroll-margin-top: calc(var(--top-h) + 12px); }
.section > h2 { font-size: clamp(24px, 3.2vw, 32px); max-width: 26ch; margin-bottom: 18px; }
.section > h2 .anchor { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); letter-spacing: .08em; margin-right: 10px; vertical-align: middle; }
.prose { max-width: 68ch; }
.prose p, .prose li { color: var(--ink); }
.prose strong { font-weight: 700; }
.prose em { font-style: italic; }
.callout { position: relative; max-width: 68ch; margin: 22px 0; padding: 26px 20px 16px; background: var(--surface); border: 1px solid var(--line-2); clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%); }
.callout::before { content: attr(data-label); position: absolute; top: 8px; left: 20px; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.callout::after { content: ""; position: absolute; top: 0; right: 0; width: 16px; height: 16px; background: linear-gradient(225deg, transparent 50%, var(--line-2) 50%); }
.callout p { margin: 0; }
.callout-rule { border-color: var(--rim); background: var(--petrol-2); }
.callout-rule::before { color: var(--accent-strong); }
:root[data-theme="light"] .callout-rule { background: var(--surface-2); }
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .callout-rule { background: var(--surface-2); } }
.callout-warning::before { color: var(--warn); }
.callout-number p { font-family: var(--font-mono); font-size: clamp(20px, 3.2vw, 28px); color: var(--signal); line-height: 1.3; }
.callout-example::before { color: var(--cobalt-text); }

/* fact chip + glossary underline */
.fact { display: inline-flex; align-items: baseline; gap: 4px; font-family: var(--font-mono); font-size: .86em; line-height: 1.35; padding: 0 6px; margin: 0 1px; background: var(--signal-soft); color: var(--signal); border: 1px solid color-mix(in srgb, var(--signal) 40%, transparent); cursor: pointer; white-space: nowrap; max-width: 100%; }
@media (max-width: 640px) { .fact { white-space: normal; display: inline; } }
.fact:hover { border-color: var(--cobalt); color: var(--ink); }
.fact.est { border-style: dashed; background: var(--accent-soft); color: var(--accent-strong); border-color: color-mix(in srgb, var(--accent-strong) 55%, transparent); }
.fact.rep { background: var(--surface-3); color: var(--ink); border-color: var(--rim); }
.fact.missing { color: var(--ink-3); background: none; border-style: dotted; }
.gloss { border-bottom: 1px dotted var(--accent-strong); cursor: help; text-decoration: none; }
.gloss:hover, .gloss:focus-visible { background: var(--accent-soft); }

/* popover, modal, tooltip */
.pop { position: fixed; z-index: 90; width: min(340px, calc(100vw - 24px)); background: var(--surface-2); border: 1px solid var(--rim); box-shadow: var(--shadow); padding: 14px 16px; font-size: 14.5px; line-height: 1.5; }
.pop h4 { font-size: 17px; margin-bottom: 6px; }
.pop p { margin: 0 0 8px; color: var(--ink-2); }
.pop .row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }
.pop .big { font-family: var(--font-mono); font-size: 24px; color: var(--signal); }
.pop .meta { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-3); }
.pop .lnk { background: none; border: 0; padding: 0; color: var(--cobalt-text); text-decoration: underline; text-underline-offset: 3px; font-size: 13.5px; }
.modal-wrap { position: fixed; inset: 0; z-index: 95; display: flex; align-items: center; justify-content: center; padding: 16px; background: rgba(8,9,16,.62); }
.modal { position: relative; width: min(760px, 100%); max-height: 88vh; overflow: auto; background: var(--surface); border: 1px solid var(--rim); box-shadow: var(--shadow); padding: 26px 24px 22px; }
.modal-x { position: absolute; top: 8px; right: 8px; }
.tt { position: fixed; z-index: 99; pointer-events: none; background: var(--bg-deep); color: var(--ink); border: 1px solid var(--rim); padding: 6px 9px; font-family: var(--font-mono); font-size: 12px; line-height: 1.4; max-width: 260px; box-shadow: var(--shadow); }
.tt b { color: var(--accent-strong); font-weight: 500; }

/* pills */
.pill { display: inline-flex; align-items: center; gap: 5px; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; padding: 2px 7px; border: 1px solid var(--line-2); color: var(--ink-2); line-height: 1.5; white-space: nowrap; }
.pill-signal, .pill-verified { color: var(--signal); border-color: var(--signal); }
.pill-reported { background: var(--surface-3); border-color: var(--rim); color: var(--ink); }
.pill-estimate, .pill-accent { color: var(--accent-strong); border-color: var(--accent-strong); border-style: dashed; }
.pill-warn { color: var(--warn); border-color: var(--warn); }
.pill-level { color: var(--ink-2); }

/* blocks (interactive containers) */
.block { margin: 28px 0; padding: 18px; background: var(--surface); border: 1px solid var(--line-2); position: relative; max-width: 1040px; }
.block-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.block-head h3 { font-size: 19px; }
.block-head .kicker { color: var(--accent-strong); }
.block-desc { margin: 0 0 14px; color: var(--ink-2); font-size: 15px; max-width: 62ch; }
.blocks-after { margin-top: 40px; }
.blocks-after > h2 { font-size: 24px; margin-bottom: 4px; }
.figure { margin: 0; }
.figure figcaption { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-3); margin-top: 10px; line-height: 1.5; }
.controls { display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: end; margin-bottom: 16px; }
.err-note { padding: 12px; border: 1px dashed var(--warn); color: var(--warn); font-family: var(--font-mono); font-size: 12.5px; }

/* controls */
.seg { display: inline-flex; border: 1px solid var(--line-2); background: var(--bg-deep); padding: 2px; flex-wrap: wrap; }
.seg button { background: none; border: 0; padding: 6px 12px; font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-2); min-height: 32px; }
.seg button:hover { color: var(--ink); }
.seg button[aria-pressed="true"] { background: var(--surface-3); color: var(--ink); box-shadow: inset 0 -2px 0 var(--accent-strong); }
.slider { display: grid; gap: 6px; min-width: 220px; flex: 1 1 220px; max-width: 420px; }
.slider-top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.slider-top label { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.slider-top output { font-family: var(--font-mono); font-size: 15px; color: var(--signal); }
.slider input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 28px; background: transparent; margin: 0; --p: 50%; }
.slider input[type=range]::-webkit-slider-runnable-track { height: 3px; background: linear-gradient(90deg, var(--accent-strong) var(--p), var(--line-2) var(--p)); }
.slider input[type=range]::-moz-range-track { height: 3px; background: var(--line-2); }
.slider input[type=range]::-moz-range-progress { height: 3px; background: var(--accent-strong); }
.slider input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; margin-top: -6.5px; background: var(--bg); border: 2px solid var(--accent-strong); border-radius: 50%; box-shadow: var(--glow); }
.slider input[type=range]::-moz-range-thumb { width: 12px; height: 12px; background: var(--bg); border: 2px solid var(--accent-strong); border-radius: 50%; }
.slider input[type=range]:hover::-webkit-slider-thumb { border-color: var(--cobalt); }

.tabs-bar { display: flex; gap: 2px; border-bottom: 1px solid var(--line-2); overflow-x: auto; margin-bottom: 16px; scrollbar-width: thin; }
.tabs-bar button { background: none; border: 0; padding: 10px 14px; font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-3); white-space: nowrap; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs-bar button:hover { color: var(--ink); }
.tabs-bar button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent-strong); }

.stepper-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.btn { display: inline-flex; align-items: center; gap: 8px; min-height: 36px; padding: 6px 14px; background: transparent; border: 1px solid var(--line-2); color: var(--ink); font-family: var(--font-mono); font-size: 12.5px; text-decoration: none; }
.btn:hover:not(:disabled) { border-color: var(--cobalt); color: var(--ink); }
.btn:disabled { opacity: .4; cursor: default; }
.btn-primary { border-color: var(--accent-strong); color: var(--ink); box-shadow: inset 0 -2px 0 var(--accent-strong); }
.dots { display: inline-flex; gap: 6px; }
.dots button { width: 9px; height: 9px; padding: 0; background: var(--line-2); border: 0; border-radius: 50%; }
.dots button[aria-current="true"] { background: var(--accent); box-shadow: var(--glow); }
.step-body { min-height: 60px; }

/* kpi, card, legend */
.kpi { padding: 12px 14px; background: var(--bg-deep); border: 1px solid var(--line); min-width: 130px; }
.kpi .v { font-family: var(--font-mono); font-size: 26px; color: var(--signal); line-height: 1.2; }
.kpi .v small { font-size: 13px; color: var(--ink-3); margin-left: 4px; }
.kpi .l { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-top: 2px; }
.kpis { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0 16px; }
.card { background: var(--surface); border: 1px solid var(--line-2); padding: 16px; clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%); }
.card { position: relative; }
.card::after { content: ""; position: absolute; top: 0; right: 0; width: 12px; height: 12px; background: linear-gradient(225deg, transparent 50%, var(--line-2) 50%); }
.card h3 { font-size: 18px; margin-bottom: 6px; }
.card .kicker { margin-bottom: 8px; display: block; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 10px 0 0; padding: 0; list-style: none; font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-2); }
.legend li { display: inline-flex; align-items: center; gap: 6px; }
.legend i { display: inline-block; width: 10px; height: 10px; background: var(--c); }
.legend i.line { height: 0; width: 16px; background: none; border-top: 2px solid var(--c); }
.legend i.dash { border-top-style: dashed; }
.legend i.dot { border-radius: 50%; }

/* table */
.tbl-tools { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 10px; }
.tbl-tools input, .tbl-tools select { background: var(--bg-deep); border: 1px solid var(--line-2); height: 34px; padding: 0 10px; font-family: var(--font-mono); font-size: 12.5px; color: var(--ink); }
.tbl-tools input:focus, .tbl-tools select:focus { border-color: var(--cobalt); outline: none; }
.tbl-count { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-3); margin-left: auto; }
.tbl-wrap { overflow: auto; max-width: 100%; border: 1px solid var(--line-2); background: var(--bg-deep); }
table.tbl { border-collapse: separate; border-spacing: 0; width: 100%; font-size: 14px; }
.tbl th, .tbl td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th { position: sticky; top: 0; z-index: 2; background: var(--surface-2); font-family: var(--font-mono); font-size: 11px; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3); font-weight: 400; white-space: nowrap; border-bottom: 1px solid var(--rim); }
.tbl th button { background: none; border: 0; padding: 0; font: inherit; color: inherit; letter-spacing: inherit; text-transform: inherit; display: inline-flex; gap: 6px; align-items: center; }
.tbl th button:hover { color: var(--ink); }
.tbl th[aria-sort="ascending"] button::after { content: "\2191"; color: var(--accent-strong); }
.tbl th[aria-sort="descending"] button::after { content: "\2193"; color: var(--accent-strong); }
.tbl td.num, .tbl th.num { text-align: right; font-family: var(--font-mono); white-space: nowrap; }
.tbl tbody tr:hover td { background: var(--surface); }
.tbl tbody tr.clickable { cursor: pointer; }
.tbl tbody tr:last-child td { border-bottom: 0; }
.tbl .empty { text-align: center; color: var(--ink-3); font-family: var(--font-mono); padding: 22px; }

/* logo tiles */
.logo { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: var(--surface-2); border: 1px solid var(--line-2); font-family: var(--font-mono); font-size: 13px; color: var(--ink-2); flex: none; overflow: hidden; }
.logo:has(img) { background: #f2f1ec; border-color: var(--rim); }
.logo img { width: 78%; height: 78%; object-fit: contain; }
.logo.on-light img { filter: none; }

/* terms, sources, prev/next */
.terms-block, .sources-block { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line-2); }
.terms-block h2, .sources-block h2 { font-size: 13px; font-family: var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 12px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { background: var(--surface); border: 1px solid var(--line-2); padding: 5px 10px; font-family: var(--font-mono); font-size: 12.5px; color: var(--ink); }
.chip:hover { border-color: var(--cobalt); }
ol.sources { list-style: none; margin: 0; padding: 0; counter-reset: s; display: grid; gap: 10px; }
ol.sources li { counter-increment: s; display: grid; grid-template-columns: 36px 1fr; gap: 8px; font-size: 14.5px; line-height: 1.45; }
ol.sources li::before { content: "[" counter(s) "]"; font-family: var(--font-mono); font-size: 12px; color: var(--ink-3); padding-top: 2px; }
ol.sources .pub { color: var(--ink-3); font-family: var(--font-mono); font-size: 12px; display: block; }
.pn { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 44px; }
.pn a { display: block; padding: 14px 16px; border: 1px solid var(--line-2); background: var(--surface); text-decoration: none; color: var(--ink); min-width: 0; }
.pn a:hover { border-color: var(--cobalt); }
.pn a.next { text-align: right; grid-column: 2; }
.pn .kicker { display: block; margin-bottom: 4px; }
.pn span.t { font-size: 18px; letter-spacing: -.01em; }

/* soon state */
.soon { margin: 48px 0; padding: 40px 24px; border: 1px dashed var(--rim); background: var(--surface); text-align: center; position: relative; }
.soon h2 { font-size: 26px; margin-bottom: 10px; }
.soon p { color: var(--ink-2); max-width: 46ch; margin: 0 auto 18px; }
.soon .die { width: 64px; height: 64px; margin: 0 auto 18px; border: 1px solid var(--rim); background-image: linear-gradient(var(--rim) 1px, transparent 1px), linear-gradient(90deg, var(--rim) 1px, transparent 1px); background-size: 16px 16px; position: relative; }
.soon .die::after { content: ""; position: absolute; inset: 22px; background: var(--accent); box-shadow: var(--glow); }
.loading { padding: 80px 0; font-family: var(--font-mono); color: var(--ink-3); font-size: 13px; }

/* charts */
.chart { width: 100%; position: relative; }
.chart svg { display: block; width: 100%; overflow: visible; }
.chart .ax text { fill: var(--ink-3); font-family: var(--font-mono); font-size: 11px; }
.chart .ax .domain { stroke: var(--line-2); }
.chart .ax .tick line { stroke: var(--line); }
.chart .gridl line { stroke: var(--line); }
.chart .gridl .domain { display: none; }
.chart .axl { fill: var(--ink-3); font-family: var(--font-mono); font-size: 11px; letter-spacing: .05em; }
.chart .lbl { fill: var(--ink-2); font-family: var(--font-mono); font-size: 11px; }
.chart .lbl-strong { fill: var(--ink); font-family: var(--font-mono); font-size: 12px; }
.chart .hit { fill: transparent; }
.chart .mk { transition: opacity .15s; }
.chart .dim { opacity: .25; }
.chart .pulse { animation: pulse 2.4s ease-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes pulse { 0% { opacity: .7; transform: scale(1); } 100% { opacity: 0; transform: scale(2.6); } }
.map-land { fill: var(--map-land); stroke: var(--map-stroke); stroke-width: .5; }
.map-c { stroke: var(--map-stroke); stroke-width: .5; transition: fill .2s; }
.map-c.click { cursor: pointer; }
.map-c:hover { stroke: var(--accent-strong); stroke-width: 1.2; }
.flow { fill: none; stroke: var(--accent-strong); stroke-width: 1.4; stroke-linecap: round; stroke-dasharray: 3 5; animation: dash 1.4s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -16; } }

/* iso */
.iso-wrap { width: 100%; overflow-x: auto; }
.iso-svg { display: block; width: 100%; min-width: 340px; max-width: 840px; margin: 0 auto; height: auto; user-select: none; -webkit-user-select: none; }
.iso-item { transition: opacity .15s; }
.iso-item.hov { cursor: pointer; }
.iso-item.hv .iso-rim, .iso-item.is-hi .iso-rim { stroke: var(--accent-strong); stroke-width: 1.6; }
.iso-item.is-dim { opacity: .3; }
.iso-rim { stroke: var(--rim); stroke-width: 1; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.iso-tex { stroke: var(--rim); stroke-width: .8; fill: none; opacity: .7; vector-effect: non-scaling-stroke; }
.iso-lbl text { font-family: var(--font-mono); fill: var(--ink); }
.iso-lbl rect { fill: var(--bg); stroke: var(--rim); stroke-width: 1; vector-effect: non-scaling-stroke; }
.iso-lbl .lead { stroke: var(--rim); stroke-width: 1; fill: none; vector-effect: non-scaling-stroke; }
.iso-lbl .end { fill: var(--accent); }
.iso-lbl { cursor: pointer; }
.iso-lbl.is-hi rect { stroke: var(--accent-strong); }
.iso-ring { fill: none; stroke: var(--accent-strong); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.iso-item:focus-visible .iso-rim { stroke: var(--accent-strong); stroke-width: 2; }

/* cloud widgets */
.cloud-note { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-3); border: 1px dashed var(--line-2); padding: 8px 10px; margin: 10px 0; }

@media (max-width: 600px) {
  body { font-size: 16.5px; }
  .page-head { padding-top: 34px; padding-bottom: 26px; }
  .wafer { width: 240px; height: 240px; right: -100px; top: -40px; opacity: .5; }
  .block { padding: 14px 12px; margin-left: 0; }
  .pn { grid-template-columns: 1fr; }
  .pn a.next { grid-column: 1; }
  .slider { max-width: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* long source titles and URLs must wrap on phones */
.sources, .sources li, .sources a { overflow-wrap: anywhere; min-width: 0; }

/* ill: illustration toolkit (js/ill.js). Tokens only. */
.ill { margin: 20px 0; max-width: 1040px; font-family: var(--font-head); color: var(--ink); }
.ill-body { min-width: 0; }
.ill-cap { font-family: var(--font-mono); font-size: 12px; line-height: 1.5; color: var(--ink-3); margin-top: 12px; max-width: 68ch; }
.ill-cap::before { content: ""; display: inline-block; width: 6px; height: 6px; background: var(--accent-strong); margin-right: 9px; vertical-align: 1px; }
.ill-icon { fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.ill-lbl { font-weight: 500; font-size: 15px; line-height: 1.25; color: var(--ink); overflow-wrap: anywhere; }
.ill-sub { display: block; font-family: var(--font-mono); font-size: 11.5px; line-height: 1.45; color: var(--ink-3); }
.ill-val { font-family: var(--font-mono); font-size: 15px; line-height: 1.3; color: var(--signal); }
.ill-val small { font-size: 11.5px; color: var(--ink-3); margin-left: 5px; }
.ill-num { font-family: var(--font-mono); font-weight: 500; font-size: 15px; color: var(--ink-2); }
.ill-tile { position: relative; display: grid; place-items: center; width: 52px; height: 52px; flex: none; color: var(--ink); background: color-mix(in srgb, var(--petrol) 16%, var(--surface-2)); border: 1px solid var(--rim); clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%); transition: border-color .15s; }
.ill-tile.is-big { width: 60px; height: 60px; }
.ill-txt { display: grid; gap: 3px; min-width: 0; }
.ill-pt { display: inline-block; width: 7px; height: 7px; flex: none; background: var(--accent-strong); }
button.ill-node, button.ill-layer { font: inherit; color: inherit; text-align: inherit; cursor: pointer; }
:is(.ill-node, .ill-layer).is-on .ill-tile { border-color: var(--accent-strong); }
:is(.ill-node, .ill-layer).is-on .ill-tile::after { content: ""; position: absolute; top: 5px; right: 5px; width: 5px; height: 5px; background: var(--accent-strong); }
button.ill-node:hover .ill-tile, button.ill-layer:hover .ill-tile { border-color: var(--cobalt); }

/* flow */
.ill-flow-in { position: relative; display: flex; flex-wrap: wrap; align-items: flex-start; }
.ill-flow-in .ill-node { background: none; border: 0; margin: 0; padding: 6px 4px; min-width: 0; }
.ill-flow-in.is-row .ill-node { flex: 1 1 0; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 9px; }
.ill-flow-in.is-row .ill-txt { justify-items: center; }
.ill-conn { position: relative; flex: 0 0 34px; height: 2px; margin-top: 32px; background: var(--rim); }
.ill-conn::after { content: ""; position: absolute; right: -1px; top: -4px; border: 5px solid transparent; border-left: 7px solid var(--rim); border-right: 0; }
.ill-dot { position: absolute; left: 0; top: -3px; width: 8px; height: 8px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 8px var(--signal); opacity: 0; animation: ill-run-x 2.4s linear infinite; animation-delay: var(--d, 0s); }
@keyframes ill-run-x { 0% { transform: translateX(0); opacity: 0; } 15%, 85% { opacity: 1; } 100% { transform: translateX(26px); opacity: 0; } }
@keyframes ill-run-y { 0% { transform: translateY(0); opacity: 0; } 15%, 85% { opacity: 1; } 100% { transform: translateY(18px); opacity: 0; } }
.ill-flow-in.is-col { flex-direction: column; flex-wrap: nowrap; align-items: stretch; padding-right: 0; }
.ill-flow-in.is-col .ill-node { display: flex; flex-direction: row; align-items: center; gap: 14px; text-align: left; }
.ill-flow-in.is-col .ill-conn { flex: 0 0 26px; width: 2px; height: 26px; margin: 0 0 0 29px; }
.ill-flow-in.is-col .ill-conn::after { right: auto; top: auto; left: -4px; bottom: -1px; border: 5px solid transparent; border-top: 7px solid var(--rim); border-bottom: 0; }
.ill-flow-in.is-col .ill-dot { left: -3px; top: 0; animation-name: ill-run-y; }
.ill-loopback { position: relative; flex: 0 0 100%; height: 24px; margin: 6px 30px 0; border: 1.5px solid var(--rim); border-top: 0; display: grid; place-items: center; }
.ill-loopback::before { content: ""; position: absolute; left: -6.5px; top: -1px; border: 5px solid transparent; border-bottom: 7px solid var(--rim); border-top: 0; transform: translateY(-4px); }
.ill-loopback em { font-style: normal; font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); background: var(--bg); padding: 0 8px; margin-top: 22px; }
.ill-flow-in.is-col { padding-right: 38px; }
.ill-flow-in.is-col .ill-loopback { position: absolute; right: 8px; top: 30px; bottom: 30px; width: 24px; height: auto; flex: none; margin: 0; border: 1.5px solid var(--rim); border-left: 0; }
.ill-flow-in.is-col .ill-loopback::before { left: -1px; top: -6.5px; border: 5px solid transparent; border-right: 7px solid var(--rim); border-left: 0; transform: translateX(-4px); }
.ill-flow-in.is-col .ill-loopback em { writing-mode: vertical-rl; margin: 0 0 0 20px; padding: 8px 0; }

/* stack */
.ill-stack-in { display: flex; flex-direction: column; gap: calc(7px + var(--ex, 0) * 18px); transition: gap .4s ease; }
.ill-layer { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; width: calc(100% - var(--ex, 0) * var(--n, 1) * 12px); margin: 0; padding: 10px 14px; background: color-mix(in srgb, var(--petrol) 12%, var(--surface-2)); border: 1px solid var(--line-2); box-shadow: 0 5px 0 var(--bg-deep); transform: translateX(calc(var(--ex, 0) * var(--i, 0) * 12px)); transition: transform .4s ease, width .4s ease, border-color .15s; }
.ill-layer .ill-txt { flex: 1 1 150px; }
.ill-layer .ill-val { margin-left: auto; }
.ill-layer.is-on { border-color: var(--accent-strong); }
button.ill-layer:hover { border-color: var(--cobalt); }
.ill-tog { margin-top: 18px; font-family: var(--font-mono); font-size: 12px; padding: 7px 14px; min-height: 36px; background: var(--surface-2); border: 1px solid var(--rim); color: var(--ink); }
.ill-tog:hover { border-color: var(--cobalt); }
@media (max-width: 520px) { .ill-layer { width: calc(100% - var(--ex, 0) * var(--n, 1) * 5px); transform: translateX(calc(var(--ex, 0) * var(--i, 0) * 5px)); } }

/* ladder + bars */
.ill-ladder-in { display: grid; }
.ill-rung, .ill-mrow { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 14px; align-items: start; }
.ill-rcol { display: grid; gap: 7px; padding-top: 2px; min-width: 0; }
.ill-rhead { display: flex; justify-content: space-between; align-items: baseline; gap: 4px 12px; flex-wrap: wrap; }
.ill-track { height: 12px; background: var(--bg-deep); border: 1px solid var(--line-2); overflow: hidden; }
.ill-fill { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--petrol), var(--rim)); border-right: 3px solid var(--signal); transition: width .8s cubic-bezier(.2, .7, .2, 1); }
.ill-rung.is-hi .ill-track, .ill-bar.is-hi .ill-track { border-color: var(--accent-strong); box-shadow: var(--glow); }
.ill-rung.is-hi .ill-tile { border-color: var(--accent-strong); }
.ill-bar.is-hi .ill-fill { background: var(--signal); }
.ill-mrow { align-items: center; min-height: 40px; }
.ill-rail { justify-self: center; width: 2px; height: 100%; min-height: 40px; background: repeating-linear-gradient(to bottom, var(--rim) 0 4px, transparent 4px 8px); }
.ill-mult { justify-self: start; font-family: var(--font-mono); font-size: 12.5px; color: var(--signal); background: var(--bg-deep); border: 1px solid var(--line-2); padding: 2px 9px; }
.ill-bars-in { display: grid; gap: 20px; }
.ill-bar { display: grid; gap: 8px; }
.ill-bar .ill-lbl { font-size: 16px; }
.ill-bar .ill-val { font-size: 18px; }
.ill-bar .ill-track { height: 26px; }

/* versus */
.ill-vgrid { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.ill-vcard { background: var(--surface); border: 1px solid var(--line-2); padding: 16px 18px 18px; clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%); min-width: 0; }
.ill-vcard header { display: flex; align-items: center; gap: 14px; }
.ill-vcard h4 { font-size: 18px; margin: 0; }
.ill-vcard ul { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 11px; }
.ill-vcard li { display: flex; align-items: baseline; gap: 10px; font-size: 14.5px; line-height: 1.4; color: var(--ink-2); }
.ill-tick { width: 7px; height: 7px; flex: none; border: 1.5px solid var(--rim); transform: translateY(-1px); }
.ill-ptxt { flex: 1 1 auto; min-width: 0; }
.ill-vs { position: absolute; left: 50%; top: 34px; z-index: 2; transform: translate(-50%, 0); font-family: var(--font-mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink); background: var(--bg); border: 1px solid var(--rim); padding: 6px 9px; }
.ill-verdict { display: flex; gap: 12px; margin: 14px 0 0; padding: 13px 16px; background: var(--surface-2); border-left: 2px solid var(--accent-strong); font-weight: 500; font-size: 15px; line-height: 1.45; }
.ill-verdict .ill-pt { margin-top: 7px; }
@media (max-width: 560px) { .ill-vgrid { grid-template-columns: minmax(0, 1fr); gap: 10px; } .ill-vs { position: static; transform: none; justify-self: center; } }

/* split */
.ill-stop { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.ill-sbar { display: flex; gap: 2px; height: 50px; }
.ill-seg { flex-basis: 0; min-width: 4px; display: grid; place-items: center; font-family: var(--font-mono); font-size: 13px; font-weight: 500; color: var(--bg); transition: opacity .2s; overflow: hidden; }
.ill-seg b { font-weight: 500; }
.ill-seg.is-dim { opacity: .3; }
.ill-slegend { list-style: none; margin: 14px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 0 20px; }
.ill-slegend li { display: flex; align-items: center; gap: 10px; padding: 8px 6px; border-bottom: 1px solid var(--line); }
.ill-slegend li.is-on { background: var(--surface-2); }
.ill-slegend .ill-lbl { flex: 1 1 auto; font-size: 14.5px; }
.ill-slegend .ill-val { text-align: right; }
.ill-slegend .ill-val small { display: block; margin: 0; }
.ill-sw { width: 12px; height: 12px; flex: none; }

/* cycle */
.ill-cyc-in { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 22px 30px; align-items: center; }
.ill-cyc-svg { display: block; width: 100%; height: auto; max-width: 340px; margin: 0 auto; overflow: visible; }
.ill-cyc-ring { fill: none; stroke: var(--line); stroke-width: 1; }
.ill-cyc-arc, .ill-cyc-head { fill: none; stroke: var(--rim); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.ill-cyc-node { color: var(--ink); cursor: default; }
.ill-cyc-node circle { fill: color-mix(in srgb, var(--petrol) 16%, var(--surface-2)); stroke: var(--rim); stroke-width: 1.2; transition: stroke .15s; }
.ill-cyc-node text { font-family: var(--font-mono); font-size: 16px; fill: var(--ink); }
.ill-cyc-node.is-on circle, .ill-cyc-node:focus-visible circle { stroke: var(--accent-strong); stroke-width: 2; }
.ill-cyc-badge circle { fill: var(--bg-deep); stroke: var(--rim); stroke-width: 1; }
.ill-cyc-badge text { font-size: 10.5px; fill: var(--ink-2); }
.ill-cyc-node.is-on .ill-cyc-badge circle { stroke: var(--accent-strong); }
.ill-cyc-center { color: var(--ink-2); } .ill-cyc-center text { font-family: var(--font-mono); font-size: 12px; fill: var(--ink-2); }
.ill-cyc-dot { fill: var(--signal); filter: drop-shadow(0 0 4px var(--signal)); offset-rotate: 0deg; animation: ill-orbit 8s linear infinite; }
@keyframes ill-orbit { from { offset-distance: 0%; } to { offset-distance: 100%; } }
.ill-cyc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.ill-cyc-list li { display: flex; align-items: flex-start; gap: 12px; padding: 9px 10px; border: 1px solid transparent; }
.ill-cyc-list li.is-on { background: var(--surface-2); border-color: var(--line-2); }
.ill-cyc-list .ill-num { flex: none; width: 26px; height: 26px; display: grid; place-items: center; border: 1px solid var(--rim); font-size: 13px; }
.ill-cyc-list .ill-txt { flex: 1 1 auto; }

/* grid */
.ill-grid-svg { display: block; width: 100%; height: auto; }
.ill-cell { fill: none; stroke: var(--rim); stroke-width: 1.5; opacity: .75; }
.ill-cell.is-on { fill: var(--signal); stroke: var(--signal); opacity: 1; }
.ill-cell.is-mark { stroke: var(--accent-strong); stroke-width: 3.5; opacity: 1; filter: drop-shadow(0 0 4px var(--accent-strong)); }
.ill-cell-ic { color: var(--ink-3); } .ill-cell-ic.is-on { color: var(--bg); }
.ill-glabel { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 14px; margin: 12px 0 0; }
.ill-glabel .ill-val { font-size: 22px; }

/* big */
.ill-big .ill-body { padding: 18px 22px 20px; background: var(--surface); border: 1px solid var(--line-2); clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%); }
.ill-blabel { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
.ill-bval { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 12px; margin: 8px 0 6px; }
.ill-bval b { font-family: var(--font-mono); font-weight: 500; font-size: clamp(44px, 11vw, 88px); line-height: 1; letter-spacing: -.02em; color: var(--signal); overflow-wrap: anywhere; }
.ill-bval small { font-family: var(--font-mono); font-size: clamp(14px, 3vw, 20px); color: var(--ink-2); }
.ill-bval small.ill-pre { font-size: clamp(24px, 6vw, 44px); color: var(--signal); }
.ill-bval .ill-pt { align-self: center; width: 9px; height: 9px; box-shadow: var(--glow); }
.ill-bval.is-missing b { color: var(--ink-3); }
.ill-big .ill-sub { font-size: 12.5px; max-width: 52ch; margin: 0; }
.ill-bsrc { margin-top: 12px; }

/* scene + annotate */
.ill-scene-in { display: flex; justify-content: center; }
.ill-scene-in .iso-wrap { overflow: hidden; display: flex; justify-content: center; }
.ill-scene-in .iso-svg { min-width: 0; max-width: 100%; }
.ill-ann text { font-family: var(--font-mono); fill: var(--ink); }
.ill-ann rect { fill: var(--bg); stroke: var(--rim); stroke-width: 1; vector-effect: non-scaling-stroke; }
.ill-ann .lead { fill: none; stroke: var(--rim); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.ill-ann .end { fill: var(--accent); }
@media (prefers-reduced-motion: reduce) { .ill-dot, .ill-cyc-dot { display: none; } }

/* v2 section diagrams */
.sec-ill { margin-block: 18px 22px; max-width: 100%; min-width: 0; }
.sec-ill + .sec-ill { margin-top: 8px; }