/* Uverwatch platform brief.
   Block grotesk headlines, an editorial serif for argument, mono for the
   machine layer. Matte bands carry structure; ink bands invert in dark mode.
   System fonts only. Components read semantic tokens (--page, --text, --line…);
   each band redefines them for its own scope. */

:root {
  --display: "SF Pro Display", "Helvetica Neue", Helvetica, Inter, "Segoe UI", system-ui, Arial, sans-serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Iowan Old Style", Charter, "Sitka Text", Cambria, Georgia, serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --slant: clamp(16px, 2.2vw, 36px);

  /* Light: matte paper and ink */
  --page: #EFEBE1;
  --surface: #F7F4EC;
  --text: #121A26;
  --text-2: #2E3746;
  --text-3: #5E6673;
  --line: rgba(18, 26, 38, .17);
  --line-strong: #121A26;
  --hl: #B4E3D2;
  --button: #16233A;
  --button-ink: #F7F4EC;
  --conflict: #8E3A22;
  --stamp: #7A2E2E;
  --c-sage: #B7C2B1;
  --c-clay: #C6A79C;
  --c-dust: #B1BCCC;
  --c-sand: #DED6C4;
  --c-slate: #1E293B;
  /* Inverted (ink) and slate scopes */
  --inv-page: #16233A; --inv-surface: #1D2C46; --inv-text: #EFEBE1; --inv-text-2: #CBCCC6; --inv-text-3: #93A0B4; --inv-line: rgba(239, 235, 225, .17); --inv-hl: #2D6155;
  --slate-text: #EFEBE1; --slate-text-2: #CBCFD2; --slate-text-3: #97A3B3; --slate-line: rgba(239, 235, 225, .18);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page: #0E1420; --surface: #152033; --text: #ECE8DE; --text-2: #C6C7C3; --text-3: #8F9AAA; --line: rgba(236, 232, 222, .14); --line-strong: #ECE8DE; --hl: #2C5E52; --button: #ECE8DE; --button-ink: #0E1420; --conflict: #E39A68; --stamp: #D99A90;
    --c-sage: #29352C; --c-clay: #432D2B; --c-dust: #22304A; --c-sand: #312D24; --c-slate: #2B3850;
    --inv-page: #ECE8DE; --inv-surface: #E2DED3; --inv-text: #121A26; --inv-text-2: #2E3746; --inv-text-3: #5E6673; --inv-line: rgba(18, 26, 38, .16); --inv-hl: #B4E3D2;
    --slate-text: #E8E7E1; --slate-text-2: #C9CDCB; --slate-text-3: #9AA4AC; --slate-line: rgba(232, 231, 225, .18);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --page: #0E1420; --surface: #152033; --text: #ECE8DE; --text-2: #C6C7C3; --text-3: #8F9AAA; --line: rgba(236, 232, 222, .14); --line-strong: #ECE8DE; --hl: #2C5E52; --button: #ECE8DE; --button-ink: #0E1420; --conflict: #E39A68; --stamp: #D99A90;
  --c-sage: #29352C; --c-clay: #432D2B; --c-dust: #22304A; --c-sand: #312D24; --c-slate: #2B3850;
  --inv-page: #ECE8DE; --inv-surface: #E2DED3; --inv-text: #121A26; --inv-text-2: #2E3746; --inv-text-3: #5E6673; --inv-line: rgba(18, 26, 38, .16); --inv-hl: #B4E3D2;
  --slate-text: #E8E7E1; --slate-text-2: #C9CDCB; --slate-text-3: #9AA4AC; --slate-line: rgba(232, 231, 225, .18);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--page); color: var(--text); font: 400 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased; transition: background-color .3s, color .3s; }
img { display: block; }
a { color: inherit; text-underline-offset: 3px; }
h1, h2, h3 { margin: 0; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; }
.wrap { width: min(1280px, 100% - 48px); margin-inline: auto; }
.mono, .label, .kicker { font-family: var(--mono); }
.label { display: block; font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-3); font-weight: 400; }
.skip { position: absolute; left: 16px; top: -60px; background: var(--text); color: var(--page); padding: 10px 14px; z-index: 60; }
.skip:focus { top: 12px; }
.serif { font-family: var(--serif); }

/* Type scale: block headlines, serif argument */
.display { font: 900 clamp(46px, 8.6vw, 128px)/.88 var(--display); letter-spacing: -.045em; text-transform: uppercase; }
.h2 { font: 800 clamp(40px, 6vw, 96px)/.9 var(--display); letter-spacing: -.04em; text-transform: uppercase; max-width: 14ch; }
.h3-block { font: 800 clamp(22px, 2.3vw, 32px)/1 var(--display); letter-spacing: -.03em; text-transform: uppercase; }
h3 { font: 700 18px/1.25 var(--sans); letter-spacing: -.01em; }
.lede { margin-top: 28px; font: 400 clamp(19px, 1.7vw, 23px)/1.45 var(--serif); color: var(--text-2); max-width: 46ch; }
.lede-xl { font-size: clamp(21px, 2.05vw, 28px); line-height: 1.42; color: var(--text); max-width: 40ch; }
.kicker { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-3); margin-bottom: 28px; }
.numeral { display: block; font: 800 clamp(72px, 9vw, 148px)/.8 var(--display); letter-spacing: -.06em; color: transparent; -webkit-text-stroke: 1.2px var(--text-3); margin-bottom: 18px; }

/* Grids: ¼ + ¾ and ¾ + ¼ */
.split-13 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3fr); gap: 48px; }
.split-31 { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 1fr); gap: 48px; align-items: end; }
.section-aside { position: sticky; top: 96px; align-self: start; }

/* Bands */
.band { position: relative; padding-block: 120px; background: var(--page); color: var(--text); transition: background-color .3s, color .3s; }
.band-tight { padding-block: 72px; }
.band-sage { --page: var(--c-sage); }
.band-clay { --page: var(--c-clay); }
.band-dust { --page: var(--c-dust); }
.band-ink, .not-block {
  --page: var(--inv-page); --surface: var(--inv-surface); --text: var(--inv-text); --text-2: var(--inv-text-2); --text-3: var(--inv-text-3);
  --line: var(--inv-line); --line-strong: var(--inv-text); --hl: var(--inv-hl); --button: var(--inv-text); --button-ink: var(--inv-page);
}
.band-slate {
  --page: var(--c-slate); --text: var(--slate-text); --text-2: var(--slate-text-2); --text-3: var(--slate-text-3);
  --line: var(--slate-line); --line-strong: var(--slate-text); --button: var(--slate-text); --button-ink: var(--c-slate);
}
.band-sage, .band-clay, .band-dust { --surface: color-mix(in srgb, var(--page) 70%, var(--text) 4%); }
/* Slanted bands sit over their neighbours so the cut reveals them cleanly. */
.slant { z-index: 1; margin-block: calc(var(--slant) * -1); padding-block: calc(var(--slant) + 104px); clip-path: polygon(0 var(--slant), 100% 0, 100% calc(100% - var(--slant)), 0 100%); }
.slant-reverse { clip-path: polygon(0 0, 100% var(--slant), 100% 100%, 0 calc(100% - var(--slant))); }

/* Top bar takes the colours of whatever band sits beneath it. */
.topbar { position: sticky; top: 0; z-index: 30; color: var(--bar-fg, var(--text)); background: color-mix(in srgb, var(--bar-bg, var(--page)) 90%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid color-mix(in srgb, var(--bar-fg, var(--text)) 14%, transparent); transition: background-color .35s, color .35s, border-color .35s; }
.topbar-inner { display: flex; align-items: center; gap: 28px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; flex-shrink: 0; }
.wordmark { font: 700 13px var(--sans); letter-spacing: .32em; }
.doc-label { font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; opacity: .62; border-left: 1px solid currentColor; padding-left: 10px; }
.sections { display: flex; gap: 22px; margin-left: auto; }
.sections a { text-decoration: none; font-size: 14px; padding: 6px 0; opacity: .72; border-bottom: 1.5px solid transparent; transition: opacity .15s; }
.sections a:hover, .sections a[aria-current] { opacity: 1; border-color: currentColor; }
.topbar-actions { display: flex; align-items: center; gap: 18px; }
.link-quiet { text-decoration: none; font-size: 14px; white-space: nowrap; opacity: .72; }
.link-quiet:hover { opacity: 1; }
.topbar .button { background: var(--bar-fg, var(--text)); color: var(--bar-bg, var(--page)); border-color: var(--bar-fg, var(--text)); }
.topbar .button:hover { background: transparent; color: var(--bar-fg, var(--text)); }
.theme-toggle { display: inline-flex; align-items: center; gap: 8px; background: none; border: 0; color: inherit; cursor: pointer; padding: 6px 0; font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.toggle-track { width: 34px; height: 18px; border: 1.5px solid currentColor; border-radius: 9px; position: relative; }
.toggle-thumb { position: absolute; top: 2px; left: 2px; width: 11px; height: 11px; border-radius: 50%; background: currentColor; transition: transform .25s cubic-bezier(.2, .7, .2, 1); }
.theme-toggle[aria-pressed="true"] .toggle-thumb { transform: translateX(16px); }

/* Buttons */
.button { display: inline-flex; align-items: center; gap: 8px; background: var(--button); color: var(--button-ink); text-decoration: none; font: 600 15px var(--sans); padding: 15px 24px; border: 1.5px solid var(--button); transition: background-color .15s, color .15s; }
.button:hover { background: transparent; color: var(--text); }
.button-small { font-size: 13px; padding: 8px 14px; }
.button-ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.button-ghost:hover { background: var(--text); color: var(--page); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

/* Title */
.hero { padding-top: 64px; padding-bottom: 136px; }
.hero-meta { display: grid; gap: 28px; }
.tldr { position: relative; background: var(--surface); border: 1px solid var(--line); padding: 26px 22px 22px; }
.tldr .label { margin-bottom: 14px; }
.tldr ol { margin: 0; padding: 0; list-style: none; counter-reset: tldr; display: grid; gap: 12px; }
.tldr li { counter-increment: tldr; position: relative; padding-left: 28px; font-size: 14px; line-height: 1.5; color: var(--text-2); }
.tldr li::before { content: counter(tldr, decimal-leading-zero); position: absolute; left: 0; top: 2px; font: 11px var(--mono); color: var(--text-3); }
.tldr strong { color: var(--text); }

/* Facts */
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; }
.facts div { padding: 4px 28px 0 0; }
.facts div + div { padding-left: 28px; border-left: 1px solid var(--line); }
.facts dt { font: 800 clamp(18px, 1.6vw, 22px)/1.05 var(--display); letter-spacing: -.025em; text-transform: uppercase; margin-bottom: 12px; }
.facts dt .mono { display: block; font: 11px var(--mono); letter-spacing: .14em; color: var(--text-3); margin-bottom: 14px; }
.facts dd { margin: 0; font-size: 15px; color: var(--text-2); }

/* Contents */
.contents { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-strong); }
.contents a { display: grid; grid-template-columns: 56px auto minmax(24px, 1fr) auto; align-items: baseline; gap: 18px; padding: 16px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.contents .mono { font-size: 12px; color: var(--text-3); }
.toc-title { font: 800 clamp(22px, 2.6vw, 36px)/1 var(--display); letter-spacing: -.035em; text-transform: uppercase; transition: box-shadow .2s; }
.toc-leader { border-bottom: 1.5px dotted var(--text-3); transform: translateY(-6px); }
.toc-note { font: italic 400 16px var(--serif); color: var(--text-3); }
.contents a:hover .toc-title { box-shadow: inset 0 -.32em var(--hl); }

/* Problem */
.problems { list-style: none; padding: 0; margin: 64px 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.problems li { padding: 22px 24px 0 0; }
.problems li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.problems .mono { display: block; font-size: 12px; color: var(--text-3); margin-bottom: 14px; }
.problems h3 { margin-bottom: 10px; }
.problems p { color: var(--text-2); font-size: 15px; }
.pull { margin: 72px 0 0; font-size: clamp(28px, 3.6vw, 48px); line-height: 1.12; font-style: italic; letter-spacing: -.01em; max-width: 22ch; }

/* Figures */
.figure { margin: 72px 0 0; background: var(--surface); border: 1px solid var(--line); padding: 32px 32px 24px; }
.figure figcaption { margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 14px; color: var(--text-3); max-width: 90ch; }
.figure figcaption .mono { color: var(--text); margin-right: 8px; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.graph { width: 100%; height: auto; display: block; overflow: visible; }
.graph .edges path { fill: none; stroke: var(--text-3); stroke-width: 1.2; transition: opacity .2s, stroke .2s, stroke-width .2s; }
.graph .edges .edge-conflict { stroke: var(--conflict); stroke-width: 1.6; stroke-dasharray: 5 5; }
.graph .edges .edge-loop { stroke-dasharray: 2 5; }
.graph .arrowhead { fill: var(--text-3); }
.graph .node { fill: var(--surface); stroke: var(--text); stroke-width: 1.4; transition: fill .2s, stroke-width .2s; }
.graph .node-direction { stroke-width: 2; }
.graph .node-field { stroke-dasharray: 4 3; }
.graph .node-claim { fill: var(--page); }
.graph .node-assess { fill: var(--hl); }
.graph .node-lines { stroke: var(--text-3); stroke-width: 1.2; fill: none; }
.graph text { font: 12px var(--sans); fill: var(--text); text-anchor: middle; }
.graph .edge-labels text { font: 11px var(--mono); fill: var(--text-3); transition: opacity .2s; }
.graph .edge-labels .conflict-label { fill: var(--conflict); text-anchor: start; }
.node-group { cursor: pointer; outline: none; transition: opacity .2s; }
.node-group:focus-visible .node { stroke-width: 3; }
.graph.is-focused .node-group:not(.is-related), .graph.is-focused .edges path:not(.is-related), .graph.is-focused .edge-labels text { opacity: .22; }
.graph .node-group.is-active .node { fill: var(--hl); stroke-width: 2.4; }
.graph .edges path.is-related { stroke: var(--text); stroke-width: 1.8; }
.graph-detail { margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3fr); gap: 48px; align-items: baseline; }
.graph-detail p { font: 400 17px/1.5 var(--serif); color: var(--text-2); max-width: 70ch; }

/* Capabilities by phase */
.phases { margin-top: 80px; }
.phase { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3fr); gap: 48px; padding: 32px 0 36px; border-top: 1px solid var(--line-strong); }
.phase-tag { display: flex; flex-direction: column; gap: 10px; align-self: start; }
.phase-tag .mono { font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-3); }
.phase-tag strong { font: 800 clamp(26px, 2.6vw, 38px)/.95 var(--display); letter-spacing: -.04em; text-transform: uppercase; }
.chip { display: block; width: 44px; height: 10px; }
.chip-sage { background: var(--c-sage); } .chip-dust { background: var(--c-dust); } .chip-clay { background: var(--c-clay); } .chip-sand { background: var(--c-sand); } .chip-ink { background: var(--text); }
.phase-items { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 32px; }
.phase-items article { display: flex; flex-direction: column; gap: 10px; }
.phase-items .mono { font-size: 12px; color: var(--text-3); }
.phase-items p { color: var(--text-2); font-size: 15px; line-height: 1.55; }
.phase-items .in-app { margin-top: auto; padding-top: 6px; font: 12px var(--mono); color: var(--text-3); }
sup a { text-decoration: none; font: 11px var(--mono); }

/* Benefits */
.statements { margin-top: 64px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; }
.statements div { border-top: 4px solid var(--text); padding-top: 20px; }
.statements p { margin-top: 14px; color: var(--text-2); font-size: 15px; }
.outcomes { width: 100%; margin-top: 72px; border-collapse: collapse; font-size: 15px; }
.outcomes caption { text-align: left; caption-side: top; padding-bottom: 14px; font-size: 14px; color: var(--text-2); }
.outcomes caption .mono { color: var(--text); font-size: 11px; text-transform: uppercase; letter-spacing: .14em; margin-right: 8px; }
.outcomes th, .outcomes td { text-align: left; vertical-align: top; padding: 16px 24px 16px 0; border-bottom: 1px solid var(--line); }
.outcomes thead th { font: 11px var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--text-3); border-bottom: 1.5px solid var(--line-strong); padding-top: 0; }
.outcomes tbody th { font-weight: 700; width: 20%; }
.outcomes td:last-child { color: var(--text-2); }

/* Use cases: ¼ tabs, ¾ slanted colour block */
.usecases { margin-top: 64px; align-items: stretch; }
.tab-list { display: flex; flex-direction: column; border-top: 1px solid var(--line-strong); }
.tab-list button { appearance: none; background: none; border: 0; border-bottom: 1px solid var(--line); border-left: 4px solid transparent; text-align: left; padding: 16px 12px 16px 14px; font: 600 15px var(--sans); color: var(--text-3); cursor: pointer; display: grid; gap: 4px; transition: color .15s, border-color .15s, background-color .15s; }
.tab-list button .mono { font: 11px var(--mono); letter-spacing: .1em; }
.tab-list button:hover { color: var(--text); }
.tab-list button[aria-selected="true"] { color: var(--text); border-left-color: var(--text); background: var(--surface); }
.usecase-block { background: var(--c-sand); clip-path: polygon(4% 0, 100% 0, 100% 100%, 0 100%); padding: 44px 48px 40px calc(4% + 40px); }
.question { font: 800 clamp(26px, 3vw, 42px)/1.02 var(--display); letter-spacing: -.035em; text-transform: uppercase; max-width: 20ch; margin-bottom: 36px; }
.usecase-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr) minmax(0, 1fr); gap: 32px; }
.usecase-grid .label { margin-bottom: 10px; }
.usecase-grid p, .usecase-grid li { color: var(--text-2); font-size: 15px; }
.usecase-grid ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; }
.link-arrow { display: inline-block; margin-top: 32px; font-weight: 600; text-decoration: none; border-bottom: 1.5px solid currentColor; padding-bottom: 2px; }
.link-arrow:hover { box-shadow: inset 0 -.4em var(--hl); }
.also { margin-top: 24px; font-size: 14px; color: var(--text-3); }
.also .label { display: inline; margin-right: 12px; }

/* Trust */
.principles { margin-top: 64px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line-strong); }
.principles article { padding: 22px 24px 28px 0; border-bottom: 1px solid var(--line); }
.principles article:not(:nth-child(3n+1)) { padding-left: 24px; border-left: 1px solid var(--line); }
.principles .mono { display: block; font-size: 12px; color: var(--text-3); margin-bottom: 12px; }
.principles h3 { margin-bottom: 8px; }
.principles p { color: var(--text-2); font-size: 15px; }
.not-block { margin: 72px 0 0 calc(25% + 12px); background: var(--page); color: var(--text); padding: 40px 72px 40px 44px; clip-path: polygon(0 0, 100% 0, calc(100% - 40px) 100%, 0 100%); }
.not-block ul { list-style: none; padding: 0; margin: 24px 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 40px; }
.not-block li { font-size: 15px; line-height: 1.5; color: var(--text-2); padding-left: 24px; position: relative; }
.not-block li::before { content: "×"; position: absolute; left: 0; top: -1px; font: 700 16px var(--mono); color: var(--text); }
.not-block strong { color: var(--text); }

/* Architecture */
.architecture { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2.6fr) minmax(0, .9fr); gap: 20px; align-items: stretch; }
.architecture .label { margin-bottom: 10px; }
.architecture ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.architecture li { font-size: 13px; color: var(--text-2); padding: 7px 10px; border: 1px solid var(--line); background: var(--page); }
.arch-node { border: 2px solid var(--text); padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.arch-layers { display: grid; gap: 6px; }
.arch-layers div, .arch-governance { display: flex; justify-content: space-between; gap: 16px; align-items: baseline; padding: 11px 12px; border: 1px solid var(--line); background: var(--page); }
.arch-layers strong, .arch-governance strong { font: 800 14px var(--display); letter-spacing: -.01em; text-transform: uppercase; white-space: nowrap; }
.arch-layers span, .arch-governance span { font: 12px var(--mono); color: var(--text-3); text-align: right; }
.arch-layers .arch-core { background: var(--hl); border-color: var(--text); }
.arch-governance { border-style: dashed; border-color: var(--text-3); }
.deploy-row { margin-top: 64px; padding-top: 22px; border-top: 1px solid var(--line-strong); }
.deploy-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; }
.deploy-options .mono { display: block; font-size: 12px; color: var(--text-3); margin-bottom: 12px; }
.deploy-options h3 { margin-bottom: 8px; }
.deploy-options p { color: var(--text-2); font-size: 15px; }

/* FAQ */
.faq { margin-top: 56px; border-top: 1px solid var(--line-strong); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 48px 22px 0; position: relative; font: 700 clamp(17px, 1.5vw, 20px)/1.3 var(--sans); letter-spacing: -.01em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 18px; font: 24px var(--mono); color: var(--text-3); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 48px 24px 0; font: 400 18px/1.5 var(--serif); color: var(--text-2); max-width: 64ch; }

/* Glossary & notes */
.glossary-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 56px; }
.glossary { margin: 0; display: grid; gap: 0; border-top: 1px solid var(--line-strong); }
.glossary div { display: grid; grid-template-columns: 150px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.glossary dt { font: 800 14px var(--display); text-transform: uppercase; letter-spacing: -.005em; padding-top: 2px; }
.glossary dd { margin: 0; color: var(--text-2); }
.notes { margin: 12px 0 0; padding-left: 20px; display: grid; gap: 10px; font-size: 14px; color: var(--text-3); }
.notes a { text-decoration: none; }

/* Close */
.cta { padding-block: calc(var(--slant) + 128px); }
.display-cta { font-size: clamp(56px, 10vw, 164px); }
.cta-row { margin-top: 72px; padding-top: 22px; border-top: 1px solid var(--line-strong); }
.cta .lede { margin-top: 0; }
.footer { padding: calc(var(--slant) + 28px) 0 40px; font-size: 13px; color: var(--text-3); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 32px; }
.footer .brand { color: var(--text); }
.footer nav { display: flex; gap: 20px; margin-left: auto; }
.footer nav a { text-decoration: none; }
.footer nav a:hover { color: var(--text); }

/* Entrance: sections settle in once, never with reduced motion. */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .2, 1); }
.reveal.is-in { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 1100px) {
  .sections { display: none; }
  .topbar-actions { margin-left: auto; }
  .phase-items { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .architecture { grid-template-columns: 1fr; }
  .architecture ul { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}
@media (max-width: 860px) {
  .wrap { width: calc(100% - 32px); }
  .band { padding-block: 80px; }
  .slant { padding-block: calc(var(--slant) + 72px); }
  .hero { padding-top: 56px; padding-bottom: 96px; }
  .split-13, .split-31, .phase, .graph-detail, .glossary-grid { grid-template-columns: 1fr; gap: 24px; }
  .section-aside { position: static; display: flex; align-items: baseline; gap: 16px; }
  .numeral { font-size: 64px; margin: 0; }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 0; }
  .facts div:nth-child(3) { padding-left: 0; border-left: 0; }
  .problems, .statements, .deploy-options, .usecase-grid, .principles { grid-template-columns: 1fr; gap: 28px; }
  .problems li, .problems li + li { padding: 20px 0 0; border-left: 0; }
  .principles article, .principles article:not(:nth-child(3n+1)) { padding: 20px 0; border-left: 0; }
  .phase-items { grid-template-columns: 1fr; }
  .contents a { grid-template-columns: 40px 1fr; }
  .toc-leader, .toc-note { display: none; }
  .tab-list { flex-direction: row; overflow-x: auto; border-top: 0; border-bottom: 1px solid var(--line); }
  .tab-list button { flex: 0 0 auto; border-left: 0; border-bottom: 3px solid transparent; }
  .tab-list button[aria-selected="true"] { border-bottom-color: var(--text); background: none; }
  .usecase-block { clip-path: none; padding: 28px 20px; }
  .not-block { margin-left: 0; padding: 32px 24px; clip-path: none; }
  .not-block ul { grid-template-columns: 1fr; }
  .outcomes thead { display: none; }
  .outcomes tr { display: grid; gap: 4px; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .outcomes th, .outcomes td, .outcomes tbody th { padding: 0; border: 0; width: auto; }
  .figure { padding: 18px 16px 14px; }
  .figure-graph { overflow-x: auto; }
  .graph { min-width: 660px; }
}
@media (max-width: 560px) {
  .doc-label, .link-quiet, .toggle-text { display: none; }
  .topbar-inner { gap: 14px; }
  .facts { grid-template-columns: 1fr; }
  .facts div, .facts div + div { padding: 18px 0 0; border-left: 0; border-top: 1px solid var(--line); }
  .glossary div { grid-template-columns: 1fr; gap: 2px; }
  .arch-layers div, .arch-governance { flex-direction: column; gap: 2px; }
  .arch-layers span, .arch-governance span { text-align: left; }
  .footer nav { margin-left: 0; flex-wrap: wrap; }
}

/* Official register: document strip, control table, stamp, issuance.
   Double rules and clause numbers give the brief the cadence of a public document. */
.doc-strip { background: var(--inv-page); color: var(--inv-text); font: 11.5px var(--mono); letter-spacing: .08em; }
.doc-strip-inner { display: flex; align-items: center; gap: 24px; min-height: 30px; }
.strip-mark { display: inline-block; width: 8px; height: 8px; margin-right: 10px; background: var(--hl); vertical-align: 1px; }
.strip-id { opacity: .75; }
.strip-right { margin-left: auto; text-transform: uppercase; letter-spacing: .14em; opacity: .8; }
.section-aside .label { margin-bottom: 4px; }
.aside-title { display: block; font: 700 15px var(--sans); letter-spacing: -.005em; }
.split-13 > .section-aside { border-top: 3px double var(--line-strong); padding-top: 18px; }
.contents, .phase, .principles, .faq, .glossary, .hero-summary, .deploy-row, .cta-row { border-top-style: double; border-top-width: 3px; }
.control { width: 100%; border-collapse: collapse; font-size: 13px; border-top: 3px double var(--line-strong); }
.control caption { text-align: left; padding-bottom: 8px; }
.control th, .control td { text-align: left; padding: 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.control th { font: 400 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text-3); width: 44%; padding-top: 10px; }
.control td { color: var(--text-2); }
.stamp { position: absolute; top: -16px; right: 12px; transform: rotate(-4deg); color: var(--stamp); border: 3px double var(--stamp); padding: 4px 10px; font: 800 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; background: var(--surface); }
.issuance { display: grid; gap: 24px; border-top: 3px double var(--line-strong); padding-top: 22px; max-width: 760px; }
.issuance p { font-size: 19px; line-height: 1.5; color: var(--text-2); }
.issuance dl { margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.issuance dt { font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); margin-bottom: 4px; }
.issuance dd { margin: 0; font-weight: 600; }
.signoff { display: flex; align-items: center; gap: 14px; margin-top: 8px; color: var(--text-3); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.signoff-line { width: 220px; height: 1px; background: var(--line-strong); }
@media (max-width: 860px) {
  .strip-id { display: none; }
  .split-13 > .section-aside { border-top: 0; padding-top: 0; }
  .issuance dl { grid-template-columns: 1fr; gap: 14px; }
}
/* Hero: a full-measure headline block over a ½ + ¼ + ¼ row of summary, control and key points. */
.hero-top { display: flex; justify-content: space-between; gap: 24px; padding-bottom: 14px; margin-bottom: 36px; border-bottom: 1px solid var(--line-strong); }
.hero-top .kicker { margin: 0; }
.fit-line { display: block; width: max-content; font-size: clamp(40px, 10vw, 150px); }
@media (prefers-reduced-motion: no-preference) {
  .fit.is-fit .fit-line { animation: line-rise .9s cubic-bezier(.2, .7, .2, 1) backwards; }
  .fit.is-fit .fit-line + .fit-line { animation-delay: .14s; }
}
@keyframes line-rise { from { clip-path: inset(0 0 100% 0); transform: translateY(.16em); } to { clip-path: inset(0); transform: none; } }
.hero-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: start; margin-top: 56px; padding-top: 30px; border-top: 3px double var(--line-strong); }
.hero-grid .hero-summary, .hero-grid .control { border-top: 0; padding-top: 0; }
.hero-grid .control caption { display: table-caption; padding-bottom: 6px; }
.hero-summary .label { margin-bottom: 14px; }
@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px 32px; }
  .hero-grid .hero-summary { grid-row: span 2; }
}
@media (max-width: 860px) {
  .hero-top { flex-direction: column; gap: 4px; margin-bottom: 24px; }
  .hero-grid { grid-template-columns: 1fr; margin-top: 36px; padding-top: 24px; }
  .hero-grid .hero-summary { grid-row: auto; }
}
/* Consecutive tight paper bands share one gap instead of doubling it. */
.band-tight + .band-tight { padding-top: 0; }
.hero-summary .lede-xl { font-size: clamp(20px, 1.75vw, 24px); }
/* No hangers: headings balance their lines, running text avoids a lone last word. */
.h2, .h3-block, .display-cta, h3 { text-wrap: balance; }
p, li, dd, td { text-wrap: pretty; }