/* BFS Brand System 1.0 — "Cut from one block"
   Tokens first. Every spacing value is a multiple of 8 (4 allowed for type-adjacent gaps). */
:root {
  --ink: #101112;
  --graphite: #1C1E20;
  --basalt: #26292C;
  --steel: #3A3E42;
  --concrete: #E4E3DE;
  --paper: #F5F4F0;
  --mute: #5E6166;
  --mute-dark: #8E9196;
  --signal: #2863FB;
  --signal-bright: #76A2FF;
  --on-signal: #FFFFFF;
  --signal-deep: #113EBC;

  --bg: var(--concrete);
  --surface: var(--paper);
  --surface-2: #D9D8D2;
  --fg: var(--ink);
  --fg-2: #2E3134;
  --mute-c: var(--mute);
  --line: rgba(16, 17, 18, .14);
  --line-strong: rgba(16, 17, 18, .32);
  --accent-text: var(--signal-deep);
  --panel: var(--ink);
  --panel-2: var(--graphite);
  --panel-line: rgba(245, 244, 240, .1);
  --panel-fg: var(--paper);
  --panel-mute: var(--mute-dark);

  --font: "Archivo", "Helvetica Neue", Arial, system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --rail: 248px;
  --gutter: clamp(20px, 4vw, 64px);
  --maxw: 1120px;
  --section-y: clamp(96px, 12vw, 176px);
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 16px;

  /* Critically damped spring (damping 1.0, response 0.5s) sampled into CSS linear(). */
  --spring: linear(0, 0.0422, 0.1374, 0.253, 0.3705, 0.4801, 0.5772, 0.6603, 0.7297, 0.7867, 0.8328, 0.8698, 0.899, 0.9221, 0.9401, 0.9541, 0.9649, 0.9733, 0.9797, 0.9846, 0.9884, 0.9912, 0.9934, 0.995, 0.9962, 0.9972, 0.9979, 0.9984, 1);
  --spring-t: 720ms;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  color-scheme: light;
}

html[data-theme="ink"] {
  --bg: var(--ink);
  --surface: var(--graphite);
  --surface-2: var(--basalt);
  --fg: var(--paper);
  --fg-2: #D3D2CD;
  --mute-c: var(--mute-dark);
  --line: rgba(245, 244, 240, .1);
  --line-strong: rgba(245, 244, 240, .26);
  --accent-text: var(--signal-bright);
  --panel: #0A0B0C;
  --panel-2: var(--graphite);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 24px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 1rem/1.6 var(--font);
  font-variation-settings: "wdth" 100;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  transition: background-color .4s ease, color .4s ease;
}
img, svg { display: block; max-width: 100%; }
svg:not([viewBox]):not([width]) { aspect-ratio: 1; height: auto; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; }
::selection { background: var(--signal); color: var(--on-signal); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 2px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: fixed; left: 16px; top: -64px; z-index: 100; background: var(--signal); color: var(--on-signal); padding: 8px 16px; border-radius: var(--r-sm); font-weight: 600; text-decoration: none; }
.skip:focus { top: 16px; }

/* ---------- Type ---------- */
.mono { font-family: var(--mono); font-size: .8125rem; letter-spacing: 0; font-feature-settings: "zero" 1; }
.display {
  font-weight: 620;
  font-variation-settings: "wdth" 100;
  font-size: clamp(2.75rem, 6vw, 5.75rem);
  line-height: 1;
  letter-spacing: -.034em;
  margin: 0;
  text-wrap: balance;
}
.h1 {
  font-weight: 600;
  font-variation-settings: "wdth" 100;
  font-size: clamp(2rem, 3.8vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -.03em;
  margin: 0;
  text-wrap: balance;
}
.h2 {
  font-weight: 600;
  font-variation-settings: "wdth" 100;
  font-size: clamp(1.375rem, 2.2vw, 1.75rem);
  line-height: 1.12;
  letter-spacing: -.018em;
  margin: 0;
  text-wrap: balance;
}
.h3 { font-weight: 600; font-size: 1.0625rem; line-height: 1.3; letter-spacing: -.01em; margin: 0; }
.lede { font-size: clamp(1.125rem, 1.5vw, 1.3125rem); line-height: 1.5; letter-spacing: -.008em; color: var(--fg-2); max-width: 36em; text-wrap: pretty; margin: 0; }
.body { color: var(--fg-2); max-width: 38em; text-wrap: pretty; margin: 0; }
.small { font-size: .875rem; line-height: 1.5; color: var(--mute-c); margin: 0; }
.accent { color: var(--accent-text); }

/* ---------- Rail (layers panel) ---------- */
.rail {
  position: fixed; inset: 0 auto 0 0; width: var(--rail); z-index: 40;
  display: flex; flex-direction: column;
  padding: 20px 12px 16px;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-right: 1px solid var(--line);
  transition: background-color .4s ease, color .4s ease, border-color .4s ease;
}
.rail.on-ink { --fg: var(--paper); --mute-c: var(--mute-dark); --line: rgba(245,244,240,.1); --line-strong: rgba(245,244,240,.26); color: var(--paper); background: rgba(16,17,18,.62); }
.rail-brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 16px; text-decoration: none; }
.rail-brand svg { width: 28px; height: 28px; }
.rail-brand b { font-weight: 700; letter-spacing: -.02em; font-size: .9375rem; }
.rail-brand span { display: block; font-family: var(--mono); font-size: .6875rem; color: var(--mute-c); }
.rail-head { font-family: var(--mono); font-size: .6875rem; color: var(--mute-c); padding: 12px 8px 8px; display: flex; justify-content: space-between; }
.layers { list-style: none; margin: 0; padding: 0; position: relative; flex: 1; overflow: auto; scrollbar-width: none; }
.layers::-webkit-scrollbar { display: none; }
.layers a {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 28px 1fr; align-items: center;
  height: 32px; padding: 0 8px; border-radius: var(--r-sm);
  text-decoration: none; font-size: .875rem; color: var(--mute-c);
  transition: color .2s ease;
}
.layers a .n { font-family: var(--mono); font-size: .6875rem; }
.layers a[aria-current="true"] { color: var(--fg); }
@media (hover: hover) and (pointer: fine) { .layers a:hover { color: var(--fg); } }
.layers-ind {
  position: absolute; left: 0; right: 0; top: 0; height: 32px; z-index: 0;
  border-radius: var(--r-sm); background: var(--line);
  will-change: transform;
}
.layers-ind::before { content: ""; position: absolute; left: 0; top: 8px; bottom: 8px; width: 2px; background: var(--signal); border-radius: 2px; }
.rail-foot { display: grid; gap: 8px; padding-top: 12px; border-top: 1px solid var(--line); }
.seg { display: grid; grid-template-columns: 1fr 1fr; padding: 3px; border-radius: 8px; background: var(--line); position: relative; }
.seg button { position: relative; z-index: 1; border: 0; background: none; height: 28px; border-radius: 6px; font-size: .8125rem; color: var(--mute-c); }
.seg button[aria-pressed="true"] { color: var(--fg); background: var(--bg); box-shadow: 0 1px 0 var(--line-strong); }
.rail.on-ink .seg button[aria-pressed="true"] { background: rgba(245,244,240,.12); }
.kbd-row { display: flex; justify-content: space-between; align-items: center; font-size: .8125rem; color: var(--mute-c); padding: 4px 8px; background: none; border: 0; border-radius: var(--r-sm); width: 100%; text-align: left; }
.kbd-row[aria-pressed="true"] { color: var(--fg); }
kbd { font-family: var(--mono); font-size: .6875rem; border: 1px solid var(--line-strong); border-bottom-width: 2px; border-radius: 4px; padding: 1px 6px; color: var(--fg); }

/* Mobile top bar */
.topbar, .menu { display: none; }
@media (max-width: 1023px) {
  .rail { display: none; }
  .topbar {
    display: flex; position: fixed; z-index: 40; left: 8px; right: 8px; top: 8px; height: 52px;
    align-items: center; gap: 12px; padding: 0 6px 0 12px; border-radius: 14px;
    background: color-mix(in srgb, var(--bg) 80%, transparent);
    backdrop-filter: blur(20px) saturate(140%); -webkit-backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid var(--line);
    transition: background-color .4s ease, color .4s ease;
  }
  .topbar.on-ink { color: var(--paper); background: rgba(16,17,18,.6); border-color: rgba(245,244,240,.12); --mute-c: var(--mute-dark); --line: rgba(245,244,240,.12); }
  .topbar svg.m { width: 24px; height: 24px; flex: none; }
  .topbar .where { flex: 1; min-width: 0; display: flex; gap: 8px; align-items: baseline; font-size: .875rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .topbar .where .mono { color: var(--mute-c); font-weight: 400; }
  .topbar .icon-btn { width: 44px; height: 40px; border: 0; background: none; border-radius: 10px; display: grid; place-items: center; }
  .topbar .icon-btn svg { width: 20px; height: 20px; }
  .menu {
    display: block;
    position: fixed; z-index: 39; left: 8px; right: 8px; top: 64px;
    max-height: calc(100svh - 80px); overflow: auto; padding: 8px; border-radius: 14px;
    background: var(--surface); border: 1px solid var(--line); box-shadow: 0 24px 48px -16px rgba(0,0,0,.35);
    transform-origin: top right; opacity: 0; transform: translateY(-8px) scale(.97); pointer-events: none;
    transition: opacity .2s var(--ease-out), transform .25s var(--ease-out);
  }
  .menu.open { opacity: 1; transform: none; pointer-events: auto; }
  .menu a { display: grid; grid-template-columns: 32px 1fr; align-items: center; min-height: 44px; padding: 0 12px; text-decoration: none; border-radius: 8px; font-size: .9375rem; }
  .menu a .n { font-family: var(--mono); font-size: .75rem; color: var(--mute-c); }
  .menu a[aria-current="true"] { background: var(--line); }
  .menu .menu-tools { display: grid; grid-template-columns: 1fr; gap: 8px; padding: 8px 4px 4px; border-top: 1px solid var(--line); margin-top: 8px; }
}

/* ---------- Main ---------- */
main { padding-left: var(--rail); }
@media (max-width: 1023px) { main { padding-left: 0; } }
.wrap { max-width: calc(var(--maxw) + 2 * var(--gutter)); margin: 0 auto; padding-inline: var(--gutter); }
.chapter { padding-block: var(--section-y) 0; position: relative; }
.chapter:last-of-type { padding-bottom: var(--section-y); }
.ch-head { display: grid; grid-template-columns: 1fr; gap: 24px; margin-bottom: clamp(40px, 5vw, 72px); }
.ch-num { display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: .8125rem; color: var(--mute-c); }
.ch-num::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.ch-num b { color: var(--accent-text); font-weight: 500; }
.ch-intro { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 64px); align-items: end; }
@media (max-width: 860px) { .ch-intro { grid-template-columns: 1fr; } }
.block { margin-top: clamp(56px, 7vw, 104px); }
.block-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* Shared artifact window */
.win {
  background: var(--panel); color: var(--panel-fg);
  border-radius: 12px; overflow: hidden;
  box-shadow: 0 1px 0 rgba(255,255,255,.06) inset, 0 32px 64px -32px rgba(16,17,18,.45);
  border: 1px solid rgba(16,17,18,.6);
}
html[data-theme="ink"] .win { border-color: var(--panel-line); }
.win-bar { display: flex; align-items: center; gap: 12px; height: 40px; padding: 0 12px; border-bottom: 1px solid var(--panel-line); font-family: var(--mono); font-size: .75rem; color: var(--panel-mute); }
.win-bar .dots { display: flex; gap: 6px; }
.win-bar .dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(245,244,240,.14); }
.win-bar .title { color: var(--panel-fg); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.win-bar .spacer { flex: 1; }
.chip { display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 8px; border-radius: 6px; font-family: var(--mono); font-size: .6875rem; border: 1px solid var(--panel-line); color: var(--panel-mute); background: none; white-space: nowrap; }
.chip[aria-pressed="true"] { color: var(--panel-fg); border-color: rgba(40,99,251,.6); background: rgba(40,99,251,.12); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 40px; padding: 0 16px;
  border-radius: 8px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--fg);
  font-size: .875rem; font-weight: 600; text-decoration: none; white-space: nowrap;
  transition: transform .12s var(--ease-out), background-color .2s ease;
}
.btn:active { transform: scale(.97); }
.btn.primary { background: var(--signal); border-color: var(--signal); color: var(--on-signal); }
.btn.dark { background: var(--panel-2); border-color: var(--panel-line); color: var(--panel-fg); }

/* ---------- 00 Cover ---------- */
.cover {
  position: relative; min-height: 100svh; background: var(--ink); color: var(--paper);
  margin-left: calc(-1 * var(--rail)); padding-left: var(--rail);
  overflow: hidden; display: flex; flex-direction: column;
  --line: rgba(245,244,240,.12); --mute-c: var(--mute-dark); --fg-2: #CFCEC9;
}
@media (max-width: 1023px) { .cover { margin-left: 0; padding-left: 0; } }
.cover-grid { position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(rgba(245,244,240,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(245,244,240,.045) 1px, transparent 1px);
  background-size: 32px 32px; background-position: -1px -1px;
  mask-image: radial-gradient(120% 90% at 70% 40%, #000 30%, transparent 75%); }
.cover-inner { position: relative; flex: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); align-items: center; gap: 24px; padding-top: 72px; padding-bottom: 24px; }
.cover h1 { max-width: 7.5em; }
.cover .lede { margin-top: 28px; color: #CFCEC9; max-width: 30em; }
.cover-mark { position: relative; aspect-ratio: 1; width: min(100%, 72svh); justify-self: end; }
.cover-mark svg { width: 100%; height: 100%; overflow: visible; }
.cover-mark .pc { fill: var(--paper); will-change: transform; }
.cover-mark .anno { font-family: var(--mono); font-size: 4.2px; fill: var(--signal); }
.cover-mark .anno-line { stroke: var(--signal); stroke-width: .35; fill: none; }
.cover-mark .anno-g { opacity: 0; }
.meta {
  position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid rgba(245,244,240,.14); margin-top: auto;
}
.meta div { padding: 16px 16px 24px 0; }
.meta dt { font-family: var(--mono); font-size: .6875rem; color: var(--mute-dark); margin-bottom: 4px; }
.meta dd { margin: 0; font-size: .9375rem; font-weight: 500; }
.meta dd .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #3CCB7F; margin-right: 8px; box-shadow: 0 0 0 3px rgba(60,203,127,.18); }
@media (max-width: 860px) {
  .cover-inner { grid-template-columns: 1fr; padding-top: 96px; gap: 8px; }
  .cover-mark { width: min(76vw, 360px); justify-self: start; order: -1; margin-left: -4%; }
  .meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .meta div:last-child { grid-column: span 2; }
}

/* ---------- 01 README + linter ---------- */
.readme { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.readme-bar { display: flex; gap: 8px; align-items: center; height: 44px; padding: 0 16px; border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: .75rem; color: var(--mute-c); }
.readme-bar svg { width: 16px; height: 16px; }
.readme-body { padding: clamp(24px, 4vw, 48px); display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); }
@media (max-width: 860px) { .readme-body { grid-template-columns: 1fr; } }
.readme-body .pos { font-weight: 550; font-variation-settings: "wdth" 100; font-size: clamp(1.375rem, 2.3vw, 2rem); line-height: 1.22; letter-spacing: -.022em; margin: 0 0 24px; text-wrap: balance; }
.readme-body .pos em { font-style: normal; text-decoration: underline; text-decoration-color: var(--signal); text-decoration-thickness: 3px; text-underline-offset: 6px; }
.kv { display: grid; grid-template-columns: 112px 1fr; gap: 0; border-top: 1px solid var(--line); margin: 0; }
.kv dt, .kv dd { padding: 12px 0; border-bottom: 1px solid var(--line); margin: 0; font-size: .9375rem; }
.kv dt { font-family: var(--mono); font-size: .75rem; color: var(--mute-c); padding-top: 15px; }
.traits { display: grid; gap: 0; border-top: 1px solid var(--line); }
.trait { display: grid; grid-template-columns: 40px 1fr; gap: 8px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.trait svg { width: 28px; height: 28px; color: var(--fg); }
.trait p { margin: 4px 0 0; font-size: .875rem; color: var(--mute-c); }

.linter { margin-top: 16px; }
.lint-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
@media (max-width: 860px) { .lint-grid { grid-template-columns: 1fr; } }
.lint-edit { position: relative; border-right: 1px solid var(--panel-line); min-height: 240px; }
@media (max-width: 860px) { .lint-edit { border-right: 0; border-bottom: 1px solid var(--panel-line); } }
.lint-hl, .lint-ta {
  margin: 0; padding: 24px; font: 400 1.0625rem/1.65 var(--font); letter-spacing: -.005em;
  white-space: pre-wrap; word-wrap: break-word; overflow-wrap: anywhere; border: 0;
}
.lint-hl { position: absolute; inset: 0; color: transparent; pointer-events: none; overflow: hidden; }
.lint-hl mark { color: transparent; background: rgba(40,99,251,.18); border-bottom: 2px wavy var(--signal); border-radius: 2px; }
.lint-ta { position: relative; display: block; width: 100%; min-height: 240px; height: 100%; resize: none; background: transparent; color: var(--panel-fg); outline: none; caret-color: var(--signal); }
.lint-out { padding: 20px 24px; font-family: var(--mono); font-size: .8125rem; line-height: 1.7; color: var(--panel-mute); min-height: 240px; }
.lint-out .row { display: grid; grid-template-columns: 56px 1fr; gap: 8px; padding: 6px 0; border-bottom: 1px dashed var(--panel-line); }
.lint-out .pos-c { color: var(--panel-mute); }
.lint-out .rule { color: var(--signal); }
.lint-out .fix { color: var(--panel-fg); }
.lint-out .ok { color: #3CCB7F; }
.lint-foot { display: flex; gap: 8px; flex-wrap: wrap; padding: 12px; border-top: 1px solid var(--panel-line); }
.voice-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .voice-cols { grid-template-columns: 1fr; } }
.voice { padding: 24px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); }
.voice .h3 { margin-bottom: 8px; }
.voice .say { margin-top: 16px; display: grid; gap: 8px; font-size: .9375rem; }
.voice .say p { margin: 0; padding-left: 24px; position: relative; }
.voice .say p::before { position: absolute; left: 0; top: 0; font-family: var(--mono); font-size: .8125rem; }
.voice .say .y::before { content: "+"; color: #1F9E5C; }
.voice .say .n { color: var(--mute-c); text-decoration: line-through; text-decoration-color: var(--line-strong); }
.voice .say .n::before { content: "\2212"; color: var(--accent-text); }

/* ---------- 02 Mark ---------- */
.meaning { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 860px) { .meaning { grid-template-columns: 1fr; } }
.meaning-stage { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; aspect-ratio: 1; display: grid; place-items: center; padding: 8%; }
.meaning-stage svg { width: 100%; height: 100%; overflow: visible; }
.meaning-stage path { fill: var(--fg); transition: fill .25s ease, opacity .25s ease; cursor: pointer; }
.meaning-stage[data-active] path { opacity: .16; }
.meaning-stage[data-active="1"] .p1, .meaning-stage[data-active="2"] .p2, .meaning-stage[data-active="3"] .p3 { opacity: 1; fill: var(--signal); }
.pieces { display: grid; align-content: stretch; gap: 0; border-top: 1px solid var(--line); }
.piece-row { display: grid; grid-template-columns: 56px 1fr; gap: 16px; align-items: start; padding: 24px 8px; border: 0; border-bottom: 1px solid var(--line); background: none; text-align: left; border-radius: 0; transition: background-color .2s ease; }
.piece-row[aria-pressed="true"] { background: var(--surface); }
.piece-row svg { width: 48px; height: 48px; }
.piece-row svg path { fill: var(--line-strong); }
.piece-row svg path.on { fill: var(--fg); }
.piece-row[aria-pressed="true"] svg path.on { fill: var(--signal); }
.piece-row .small { margin-top: 6px; }

.inspector { display: grid; grid-template-columns: minmax(0, 1fr) 280px; min-height: 560px; }
@media (max-width: 860px) { .inspector { grid-template-columns: 1fr; } }
.insp-canvas { position: relative; display: grid; place-items: center; padding: 32px; background:
  radial-gradient(circle at 1px 1px, rgba(245,244,240,.07) 1px, transparent 0) 0 0 / 16px 16px; border-right: 1px solid var(--panel-line); }
@media (max-width: 860px) { .insp-canvas { border-right: 0; border-bottom: 1px solid var(--panel-line); padding: 16px; } }
.insp-canvas svg { width: min(100%, 480px); height: auto; overflow: visible; }
.insp-canvas .gridl { stroke: rgba(245,244,240,.08); stroke-width: .3; }
.insp-canvas .gridl.major { stroke: rgba(245,244,240,.16); }
.insp-canvas .pc { fill: var(--paper); cursor: pointer; transition: fill .2s ease; }
.insp-canvas .pc.sel { fill: #F5F4F0; }
.insp-canvas .selbox { fill: none; stroke: #4C8DFF; stroke-width: .6; pointer-events: none; transition: opacity .2s ease; }
.insp-canvas .handle { fill: #fff; stroke: #4C8DFF; stroke-width: .5; }
.insp-canvas .key { stroke: var(--signal); stroke-width: .45; stroke-dasharray: 2 1.5; fill: none; }
.insp-canvas .dim { stroke: var(--signal); stroke-width: .4; fill: none; }
.insp-canvas .dimt { font-family: var(--mono); font-size: 4px; fill: var(--signal); }
.insp-canvas .cs { fill: rgba(76,141,255,.12); stroke: #4C8DFF; stroke-width: .4; stroke-dasharray: 1.5 1.5; }
.insp-canvas .layer { transition: opacity .3s ease; }
.insp-canvas .layer.off { opacity: 0; }
.insp-panel { padding: 0; font-size: .8125rem; display: flex; flex-direction: column; }
.insp-sec { padding: 16px; border-bottom: 1px solid var(--panel-line); }
.insp-sec h4 { margin: 0 0 12px; font-size: .75rem; font-weight: 600; color: var(--panel-fg); }
.insp-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.field { display: flex; align-items: center; gap: 8px; height: 28px; padding: 0 8px; border-radius: 6px; background: rgba(245,244,240,.05); font-family: var(--mono); font-size: .75rem; }
.field span { color: var(--panel-mute); }
.field.wide { grid-column: span 2; }
.toggle-list { display: grid; gap: 4px; }
.tg { display: flex; align-items: center; justify-content: space-between; height: 32px; padding: 0 8px; border-radius: 6px; border: 0; background: none; color: var(--panel-fg); font-size: .8125rem; }
.tg i { width: 28px; height: 16px; border-radius: 8px; background: rgba(245,244,240,.16); position: relative; transition: background-color .2s ease; }
.tg i::after { content: ""; position: absolute; top: 2px; left: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--paper); transition: transform .3s var(--spring); }
.tg[aria-pressed="true"] i { background: var(--signal); }
.tg[aria-pressed="true"] i::after { transform: translateX(12px); }
.insp-note { padding: 16px; color: var(--panel-mute); line-height: 1.55; font-family: var(--font); }

.specs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .specs { grid-template-columns: 1fr; } }
.spec { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 24px; display: flex; flex-direction: column; gap: 16px; }
.spec-vis { aspect-ratio: 4 / 3; display: grid; place-items: center; border-radius: 8px; background: var(--bg); position: relative; overflow: hidden; }
.sizes { display: flex; align-items: flex-end; gap: 20px; flex-wrap: wrap; padding: 16px; }
.sizes figure { margin: 0; display: grid; justify-items: center; gap: 8px; }
.sizes figcaption { font-family: var(--mono); font-size: .6875rem; color: var(--mute-c); }
.sizes svg { color: var(--fg); }

/* ---------- 03 Lockups ---------- */
.lockups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .lockups { grid-template-columns: 1fr; } }
.lockup { border-radius: 12px; border: 1px solid var(--line); background: var(--surface); overflow: hidden; display: grid; grid-template-rows: 1fr auto; }
.lockup .stage { min-height: 240px; display: grid; place-items: center; padding: 40px; }
.lockup .stage img { max-height: 96px; width: auto; }
.lockup .stage img.tall { max-height: 152px; }
.lockup .cap { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; border-top: 1px solid var(--line); }
.lockup .cap .small { color: var(--mute-c); }
.lockup .cap a { font-family: var(--mono); font-size: .75rem; color: var(--accent-text); text-decoration: none; white-space: nowrap; }
html[data-theme="ink"] .lockup .stage img.inv { filter: invert(1) hue-rotate(180deg) brightness(1.05); }
.ways { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .ways { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.way { border-radius: 12px; aspect-ratio: 4 / 5; padding: 16px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); }
.way svg { width: 44%; margin: auto; }
.way p { margin: 0; font-family: var(--mono); font-size: .6875rem; display: flex; justify-content: space-between; gap: 8px; }

/* ---------- 04 PR review (misuse) ---------- */
.pr-head { padding: 20px 20px 16px; border-bottom: 1px solid var(--panel-line); }
.pr-title { font-size: 1.25rem; font-weight: 600; letter-spacing: -.015em; margin: 0 0 8px; }
.pr-title span { color: var(--panel-mute); font-weight: 400; }
.pr-meta { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; font-size: .8125rem; color: var(--panel-mute); }
.badge { display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 10px; border-radius: 12px; font-size: .75rem; font-weight: 600; }
.badge.open { background: #238636; color: #fff; }
.badge.merged { background: #8957E5; color: #fff; }
.pr-progress { margin-left: auto; font-family: var(--mono); font-size: .75rem; }
.hunk { border-bottom: 1px solid var(--panel-line); }
.hunk-head { display: flex; align-items: center; gap: 12px; padding: 0 16px; height: 40px; background: rgba(56,139,253,.08); font-family: var(--mono); font-size: .75rem; color: var(--panel-mute); }
.hunk-head b { color: var(--panel-fg); font-weight: 500; }
.hunk-body { display: grid; grid-template-columns: 1fr 1fr; }
@media (max-width: 700px) { .hunk-body { grid-template-columns: 1fr; } }
.side { display: grid; grid-template-columns: 40px 104px 1fr; gap: 12px; align-items: center; padding: 12px 16px 12px 0; font-size: .875rem; min-height: 128px; }
.side .ln { font-family: var(--mono); font-size: .75rem; text-align: right; color: var(--panel-mute); align-self: stretch; padding-top: 4px; }
.side.del { background: rgba(248,81,73,.1); }
.side.del .ln::after { content: " \2212"; color: #F85149; }
.side.add { background: rgba(46,160,67,.12); }
.side.add .ln::after { content: " +"; color: #3FB950; }
.side .thumb { width: 104px; height: 104px; border-radius: 8px; background: rgba(245,244,240,.06); display: grid; place-items: center; overflow: hidden; }
.side .thumb svg { width: 64px; height: 64px; overflow: visible; }
.side .thumb .m { transition: transform var(--spring-t) var(--spring), filter .4s ease; transform-box: view-box; transform-origin: 50% 50%; }
.side .thumb path { transition: transform var(--spring-t) var(--spring), fill .4s ease, stroke .4s ease, stroke-width .4s ease; }
.side p { margin: 0; color: var(--panel-fg); }
.side p small { display: block; color: var(--panel-mute); font-size: .8125rem; margin-top: 4px; }
.side.add { opacity: .5; transition: opacity .3s ease; }
.hunk.fixed .side.add { opacity: 1; }
.hunk-actions { display: flex; justify-content: flex-end; padding: 8px 16px 12px; gap: 8px; }
.pr-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px; flex-wrap: wrap; }

/* ---------- 05 Colour ---------- */
.swatches { display: grid; grid-template-columns: 2fr 1fr 1fr; grid-auto-rows: 168px; gap: 8px; }
@media (max-width: 860px) { .swatches { grid-template-columns: 1fr 1fr; grid-auto-rows: 136px; } }
.sw {
  position: relative; border-radius: 12px; padding: 16px; border: 1px solid var(--line);
  display: flex; flex-direction: column; justify-content: space-between; text-align: left;
  transition: transform .15s var(--ease-out);
}
.sw:active { transform: scale(.985); }
.sw.big { grid-row: span 2; }
@media (max-width: 860px) { .sw.big { grid-column: span 2; grid-row: span 1; } }
.sw .nm { font-weight: 600; font-size: 1rem; letter-spacing: -.01em; }
.sw .role { font-size: .8125rem; opacity: .72; margin-top: 2px; display: block; }
.sw .val { font-family: var(--mono); font-size: .75rem; display: flex; justify-content: space-between; gap: 8px; }
.sw .val .cp { opacity: 0; transition: opacity .15s ease; }
@media (hover: hover) and (pointer: fine) { .sw:hover .val .cp { opacity: .7; } }
.fmt { display: inline-flex; gap: 4px; padding: 3px; border-radius: 8px; background: var(--line); }
.fmt button { border: 0; background: none; height: 28px; padding: 0 10px; border-radius: 6px; font-family: var(--mono); font-size: .75rem; color: var(--mute-c); }
.fmt button[aria-pressed="true"] { background: var(--surface); color: var(--fg); box-shadow: 0 1px 0 var(--line-strong); }
.ratio { display: flex; height: 56px; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); }
.ratio div { display: flex; align-items: flex-end; padding: 8px 10px; font-family: var(--mono); font-size: .6875rem; min-width: 0; white-space: nowrap; }
.tokens-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 960px) { .tokens-wrap { grid-template-columns: 1fr; } }
.code { margin: 0; padding: 20px; font-family: var(--mono); font-size: .8125rem; line-height: 1.75; overflow: auto; max-height: 520px; color: var(--panel-fg); tab-size: 2; }
.code .k { color: #9CC3FF; }
.code .s { color: #F5C08A; }
.code .c { color: var(--panel-mute); }
.code .p { color: var(--panel-mute); }
.code .sw-i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; border: 1px solid rgba(255,255,255,.2); }
.code .tok { cursor: pointer; border-radius: 3px; }
@media (hover: hover) and (pointer: fine) { .code .tok:hover { background: rgba(245,244,240,.08); } }
.contrast { width: 100%; border-collapse: collapse; font-size: .8125rem; }
.contrast th, .contrast td { padding: 10px 8px; border-bottom: 1px solid var(--line); text-align: left; }
.contrast th { font-family: var(--mono); font-size: .6875rem; color: var(--mute-c); font-weight: 400; }
.contrast .pair { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 32px; border-radius: 6px; font-weight: 700; border: 1px solid var(--line); }
.contrast .pass { font-family: var(--mono); font-size: .75rem; }
.contrast .pass.no { color: var(--accent-text); }

/* ---------- 06 Type ---------- */
.tester { display: grid; grid-template-columns: minmax(0, 1fr) 260px; }
@media (max-width: 860px) { .tester { grid-template-columns: 1fr; } }
.tester-stage { padding: clamp(24px, 4vw, 48px); border-right: 1px solid var(--panel-line); min-height: 360px; display: flex; align-items: center; overflow: hidden; }
@media (max-width: 860px) { .tester-stage { border-right: 0; border-bottom: 1px solid var(--panel-line); min-height: 240px; } }
.tester-text { width: 100%; outline: none; font-weight: 620; font-size: clamp(2.5rem, 6vw, 5.5rem); line-height: 1; letter-spacing: -.034em; font-variation-settings: "wdth" 100; overflow-wrap: anywhere; color: var(--panel-fg); }
.tester-ctl { padding: 16px; display: grid; gap: 16px; align-content: start; }
.rng { display: grid; gap: 8px; }
.rng label { display: flex; justify-content: space-between; font-family: var(--mono); font-size: .75rem; color: var(--panel-mute); }
.rng label output { color: var(--panel-fg); }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 24px; background: none; margin: 0; }
input[type="range"]::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: rgba(128,128,128,.35); }
input[type="range"]::-moz-range-track { height: 4px; border-radius: 2px; background: rgba(128,128,128,.35); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; margin-top: -6px; border-radius: 50%; background: var(--signal); border: 2px solid var(--ink); }
input[type="range"]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--signal); border: 2px solid var(--ink); }
.presets { display: flex; flex-wrap: wrap; gap: 6px; }
.scale { border-top: 1px solid var(--line); }
.scale-row { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 24px; align-items: baseline; padding: 20px 0; border-bottom: 1px solid var(--line); }
@media (max-width: 700px) { .scale-row { grid-template-columns: 1fr; gap: 8px; } }
.scale-row .mono { color: var(--mute-c); line-height: 1.6; }
.scale-row .ex { min-width: 0; overflow-wrap: anywhere; }
.pairing { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .pairing { grid-template-columns: 1fr; } }
.face { padding: 24px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 16px; min-height: 280px; }
.face .big { font-size: clamp(4rem, 9vw, 7.5rem); line-height: .9; letter-spacing: -.04em; font-weight: 600; font-variation-settings: "wdth" 100; }
.face .big.m { font-family: var(--mono); font-weight: 500; letter-spacing: -.04em; font-variation-settings: normal; }
.face .glyphs { font-size: 1.125rem; letter-spacing: .02em; color: var(--mute-c); overflow-wrap: anywhere; }
.face .glyphs.m { font-family: var(--mono); font-size: .9375rem; }

/* ---------- 07 Patterns ---------- */
.pattern-hero { position: relative; margin-inline: calc(-1 * var(--gutter)); border-radius: 0; overflow: hidden; background: var(--ink); }
@media (min-width: 1200px) { .pattern-hero { margin-inline: 0; border-radius: 16px; } }
.gen { display: grid; grid-template-columns: minmax(0, 1fr) 300px; }
@media (max-width: 960px) { .gen { grid-template-columns: 1fr; } }
.gen-stage { position: relative; display: grid; place-items: center; padding: 24px; border-right: 1px solid var(--panel-line); background: #0A0B0C; min-height: 420px; }
@media (max-width: 960px) { .gen-stage { border-right: 0; border-bottom: 1px solid var(--panel-line); min-height: 0; padding: 12px; } }
.gen-frame { width: 100%; max-height: 640px; display: grid; place-items: center; }
.gen-frame svg { width: 100%; height: auto; max-height: 600px; border-radius: 6px; box-shadow: 0 0 0 1px rgba(245,244,240,.08); }
.gen-frame svg .t { transition: transform var(--spring-t) var(--spring), fill .35s ease; transform-box: fill-box; transform-origin: center; }
.gen-size { position: absolute; left: 24px; bottom: 16px; font-family: var(--mono); font-size: .6875rem; color: var(--panel-mute); }
@media (max-width: 960px) { .gen-size { position: static; margin-top: 8px; } }
.gen-ctl { display: grid; align-content: start; }
.gen-ctl .insp-sec { display: grid; gap: 10px; }
.opt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.opt { display: grid; gap: 2px; text-align: left; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--panel-line); background: none; color: var(--panel-mute); font-size: .8125rem; }
.opt b { color: var(--panel-fg); font-weight: 600; font-size: .8125rem; }
.opt[aria-pressed="true"] { border-color: rgba(40,99,251,.7); background: rgba(40,99,251,.1); }
.sw-row { display: flex; gap: 8px; }
.sw-btn { width: 36px; height: 36px; border-radius: 8px; border: 2px solid transparent; padding: 3px; background: none; }
.sw-btn i { display: block; width: 100%; height: 100%; border-radius: 5px; box-shadow: inset 0 0 0 1px rgba(245,244,240,.18); }
.sw-btn[aria-pressed="true"] { border-color: var(--signal); }
.gen-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 16px; }
.pat-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 960px) { .pat-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .pat-cards { grid-template-columns: 1fr; } }
.pat-card { border-radius: 12px; overflow: hidden; border: 1px solid var(--line); background: var(--surface); display: flex; flex-direction: column; text-align: left; padding: 0; }
.pat-card .pv { aspect-ratio: 4 / 3; background: var(--ink); }
.pat-card .pv svg { width: 100%; height: 100%; }
.pat-card .tx { padding: 16px; display: grid; gap: 6px; }
.rules { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .rules { grid-template-columns: 1fr; } }
.rule-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.rule-list li { display: grid; grid-template-columns: 28px 1fr; gap: 8px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: .9375rem; color: var(--fg-2); }
.rule-list li::before { font-family: var(--mono); font-size: .875rem; }
.rule-list.do li::before { content: "+"; color: #1F9E5C; }
.rule-list.dont li::before { content: "\2212"; color: var(--accent-text); }

/* ---------- 08 Icons ---------- */
.icons { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 860px) { .icons { grid-template-columns: 1fr; } }
.icon-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; align-content: start; }
.ic { aspect-ratio: 1; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); display: grid; place-items: center; gap: 4px; padding: 8px; transition: border-color .2s ease; }
.ic svg { width: 28px; height: 28px; color: var(--fg); }
.ic span { font-family: var(--mono); font-size: .625rem; color: var(--mute-c); }
.ic[aria-pressed="true"] { border-color: var(--signal); box-shadow: inset 0 0 0 1px var(--signal); }
.ic-zoom { position: relative; border-radius: 12px; overflow: hidden; }
.ic-zoom .zs { padding: 24px; display: grid; place-items: center; }
.ic-zoom svg.z { width: min(100%, 360px); height: auto; }
.ic-zoom .zg line { stroke: rgba(245,244,240,.1); stroke-width: .04; }
.ic-zoom .zk { fill: none; stroke: var(--signal); stroke-width: .06; stroke-dasharray: .3 .2; }
.ic-zoom .zi { fill: var(--paper); fill-rule: evenodd; transition: opacity .2s ease; }
.devices { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .devices { grid-template-columns: 1fr; } }
.device { padding: 24px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); display: grid; gap: 16px; }
.device .dv { height: 120px; display: grid; place-items: center; border-radius: 8px; background: var(--bg); overflow: hidden; }

/* ---------- 09 Imagery ---------- */
.iso { display: grid; grid-template-columns: minmax(0, 1fr) 280px; }
@media (max-width: 860px) { .iso { grid-template-columns: 1fr; } }
.iso-stage { position: relative; min-height: 480px; display: grid; place-items: center; border-right: 1px solid var(--panel-line); touch-action: pan-y; cursor: grab; user-select: none; overflow: hidden;
  background: radial-gradient(80% 70% at 50% 60%, #1D2023 0%, #0A0B0C 70%); }
.iso-stage:active { cursor: grabbing; }
@media (max-width: 860px) { .iso-stage { border-right: 0; border-bottom: 1px solid var(--panel-line); min-height: 340px; } }
.iso-stage svg { width: min(100%, 560px); height: auto; overflow: visible; }
.iso-hint { position: absolute; left: 16px; bottom: 12px; font-family: var(--mono); font-size: .6875rem; color: var(--panel-mute); }
.mood { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .mood { grid-template-columns: 1fr; } }
.mood figure { margin: 0; border-radius: 12px; overflow: hidden; background: var(--surface); border: 1px solid var(--line); }
.mood .mv { aspect-ratio: 4 / 3; }
.mood .mv svg { width: 100%; height: 100%; }
.mood figcaption { padding: 16px; display: grid; gap: 6px; }

/* ---------- 10 Motion ---------- */
.tl { display: grid; grid-template-columns: minmax(0, 1fr); }
.tl-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); border-bottom: 1px solid var(--panel-line); }
@media (max-width: 860px) { .tl-top { grid-template-columns: 1fr; } }
.tl-stage { min-height: 340px; display: grid; place-items: center; border-right: 1px solid var(--panel-line); overflow: hidden; position: relative; }
@media (max-width: 860px) { .tl-stage { border-right: 0; border-bottom: 1px solid var(--panel-line); min-height: 280px; } }
.tl-stage svg { width: 200px; height: 200px; overflow: visible; }
.tl-stage .pc { fill: var(--paper); will-change: transform; }
.tl-graph { padding: 16px; display: grid; gap: 12px; align-content: start; }
.tl-graph svg { width: 100%; height: 180px; }
.tl-graph .ax { stroke: rgba(245,244,240,.14); stroke-width: 1; }
.tl-graph .cv { stroke: var(--signal); stroke-width: 2; fill: none; }
.tl-graph .cv-b { stroke: rgba(245,244,240,.25); stroke-width: 1.5; fill: none; stroke-dasharray: 4 4; }
.tl-graph .ph { stroke: var(--paper); stroke-width: 1; }
.tl-tracks { padding: 8px 0; font-family: var(--mono); font-size: .75rem; }
.track { display: grid; grid-template-columns: 136px minmax(0, 1fr); align-items: center; height: 36px; padding: 0 16px; gap: 12px; color: var(--panel-mute); }
.track .bar { position: relative; height: 16px; border-radius: 4px; background: rgba(245,244,240,.04); }
.track .seg-k { position: absolute; top: 3px; height: 10px; border-radius: 3px; background: rgba(245,244,240,.25); }
.track .seg-k.s { background: var(--signal); }
.playhead { position: absolute; top: -10px; bottom: -10px; width: 1px; background: var(--paper); left: 0; }
.tl-actions { display: flex; gap: 8px; flex-wrap: wrap; padding: 12px 16px; border-top: 1px solid var(--panel-line); }
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .principles { grid-template-columns: 1fr; } }
.principle { padding: 24px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); display: grid; gap: 10px; align-content: start; }
.principle .mono { color: var(--accent-text); }

/* ---------- 11 Layout ---------- */
.layout-demo { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 860px) { .layout-demo { grid-template-columns: 1fr; } }
.cols { position: relative; aspect-ratio: 16 / 10; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); padding: 6%; overflow: hidden; }
.cols .c12 { position: absolute; inset: 0 6%; display: grid; grid-template-columns: repeat(12, 1fr); gap: 2.4%; pointer-events: none; }
.cols .c12 i { background: rgba(40,99,251,.08); border-inline: 1px solid rgba(40,99,251,.22); }
.cols .mock { position: relative; display: grid; grid-template-columns: repeat(12, 1fr); column-gap: 2.4%; row-gap: 8%; height: 100%; align-content: start; }
.cols .mock .bl { background: var(--fg); border-radius: 3px; }
.space-scale { display: grid; gap: 8px; }
.space-row { display: grid; grid-template-columns: 64px 1fr 56px; align-items: center; gap: 12px; font-family: var(--mono); font-size: .75rem; color: var(--mute-c); }
.space-row i { display: block; height: 16px; background: var(--signal); border-radius: 2px; transform-origin: left; }
.grid-overlay { position: fixed; inset: 0 0 0 var(--rail); z-index: 30; pointer-events: none; opacity: 0; transition: opacity .25s ease; }
@media (max-width: 1023px) { .grid-overlay { left: 0; } }
.grid-overlay.on { opacity: 1; }
.grid-overlay .wrap { height: 100%; display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; }
@media (max-width: 860px) { .grid-overlay .wrap { grid-template-columns: repeat(4, 1fr); } .grid-overlay .wrap i:nth-child(n+5) { display: none; } }
.grid-overlay i { background: rgba(40,99,251,.07); border-inline: 1px solid rgba(40,99,251,.25); }

/* ---------- 12 Applications (horizontal track) ---------- */
.apps-pin { position: relative; }
.apps-sticky { position: sticky; top: 0; height: 100svh; overflow: hidden; overflow: clip; display: flex; flex-direction: column; justify-content: center; }
.apps-track { display: flex; gap: 24px; padding-inline: var(--gutter); will-change: transform; align-items: stretch; }
.app { flex: none; width: min(560px, 78vw); display: flex; flex-direction: column; gap: 12px; }
.app .art { height: min(400px, 52svh); border-radius: 12px; overflow: hidden; position: relative; background: var(--surface-2); border: 1px solid var(--line); display: grid; place-items: center; }
.app .cap { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.app .cap .h3 { white-space: nowrap; }
.app .cap .small { text-align: right; }
.apps-progress { display: flex; align-items: center; gap: 16px; padding: 24px var(--gutter) 0; font-family: var(--mono); font-size: .75rem; color: var(--mute-c); }
.apps-progress .bar { flex: 1; height: 2px; background: var(--line); position: relative; overflow: hidden; border-radius: 1px; }
.apps-progress .bar i { position: absolute; inset: 0; background: var(--signal); transform-origin: left; transform: scaleX(0); }
@media (max-width: 860px), (prefers-reduced-motion: reduce) {
  .apps-pin { height: auto !important; }
  .apps-sticky { position: static; height: auto; overflow: visible; }
  .apps-track { transform: none !important; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 16px; scrollbar-width: none; overscroll-behavior-x: contain; }
  .apps-track::-webkit-scrollbar { display: none; }
  .app { scroll-snap-align: start; scroll-margin-left: var(--gutter); width: min(560px, 84vw); }
  .app .art { height: 300px; }
  .apps-progress { display: none; }
}
/* App mockups */
.mk-site { width: 88%; border-radius: 8px; overflow: hidden; background: var(--ink); color: var(--paper); box-shadow: 0 24px 48px -24px rgba(0,0,0,.5); }
.mk-site .nav { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid rgba(245,244,240,.08); font-size: .6875rem; }
.mk-site .nav .l { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: .8125rem; letter-spacing: -.02em; }
.mk-site .nav .l svg { width: 18px; height: 18px; }
.mk-site .nav .r { display: flex; gap: 14px; color: var(--mute-dark); align-items: center; }
.mk-site .nav .r b { background: var(--signal); color: var(--on-signal); padding: 5px 10px; border-radius: 6px; font-weight: 600; }
.mk-site .hero { padding: 28px 16px 32px; }
.mk-site .hero h5 { margin: 0; font-size: clamp(1.25rem, 2.6vw, 1.75rem); line-height: 1.04; font-weight: 620; letter-spacing: -.03em; font-variation-settings: "wdth" 100; max-width: 11em; }
.mk-site .hero p { margin: 10px 0 0; font-size: .6875rem; color: var(--mute-dark); max-width: 30em; }
.mk-avatars { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; justify-content: center; padding: 16px; }
.mk-avatars .av { display: grid; justify-items: center; gap: 8px; font-family: var(--mono); font-size: .625rem; color: var(--mute-c); }
.mk-avatars .av div { width: 96px; height: 96px; display: grid; place-items: center; background: var(--ink); }
.mk-avatars .av div svg { width: 62%; height: 62%; color: var(--paper); }
.mk-avatars .av.circle div { border-radius: 50%; }
.mk-avatars .av.sq div { border-radius: 20px; }
.mk-avatars .av.sig div { background: var(--signal); }
.mk-avatars .av.sig div svg { color: var(--ink); }
.mk-banner { width: 92%; aspect-ratio: 4 / 1; border-radius: 6px; overflow: hidden; position: relative; }
.mk-banner svg { width: 100%; height: 100%; }
.mk-li { width: 92%; }
.mk-li .pf { display: flex; align-items: flex-end; gap: 12px; margin-top: -32px; padding-left: 16px; position: relative; }
.mk-li .pf > div:last-child { margin-bottom: -14px; }
.mk-li .pf .ph { width: 64px; height: 64px; border-radius: 50%; background: var(--ink); border: 3px solid var(--surface-2); display: grid; place-items: center; }
.mk-li .pf .ph svg { width: 60%; color: var(--paper); }
.mk-li .pf b { font-size: .875rem; }
.mk-li .pf span { display: block; font-size: .6875rem; color: var(--mute-c); }
.mk-slide { width: 88%; aspect-ratio: 16 / 9; border-radius: 6px; background: var(--ink); color: var(--paper); padding: 5%; display: grid; grid-template-rows: auto 1fr auto; box-shadow: 0 24px 48px -24px rgba(0,0,0,.5); position: relative; overflow: hidden; }
.mk-slide .t { display: flex; justify-content: space-between; font-family: var(--mono); font-size: .5625rem; color: var(--mute-dark); }
.mk-slide h5 { margin: 0; align-self: end; font-size: clamp(1.125rem, 2.4vw, 1.75rem); line-height: 1.04; letter-spacing: -.03em; font-weight: 620; font-variation-settings: "wdth" 100; max-width: 9em; position: relative; z-index: 1; }
.mk-slide .stat { display: flex; gap: 24px; margin-top: 12px; font-size: .625rem; color: var(--mute-dark); position: relative; z-index: 1; }
.mk-slide .stat b { display: block; font-size: 1rem; color: var(--signal); font-weight: 700; letter-spacing: -.02em; }
.mk-slide .bgp { position: absolute; right: -6%; top: -10%; width: 52%; opacity: .9; }
.mk-doc { width: 66%; aspect-ratio: 1 / 1.25; background: var(--paper); color: var(--ink); border-radius: 4px; padding: 7%; font-size: .5625rem; box-shadow: 0 24px 48px -20px rgba(0,0,0,.35); display: flex; flex-direction: column; gap: 10px; }
.mk-doc .hd { display: flex; justify-content: space-between; align-items: flex-start; }
.mk-doc .hd svg { width: 22px; height: 22px; }
.mk-doc h6 { margin: 8px 0 0; font-size: 1.125rem; letter-spacing: -.025em; font-weight: 620; font-variation-settings: "wdth" 100; }
.mk-doc .ln { display: flex; justify-content: space-between; border-bottom: 1px solid rgba(16,17,18,.12); padding: 5px 0; font-family: var(--mono); }
.mk-doc .tot { display: flex; justify-content: space-between; font-weight: 700; font-size: .75rem; margin-top: auto; padding-top: 8px; border-top: 2px solid var(--ink); }
.mk-doc .tot b { color: var(--signal-deep); }
.mk-figma { width: 88%; aspect-ratio: 1.6 / 1; border-radius: 6px; overflow: hidden; position: relative; background: var(--ink); color: var(--paper); box-shadow: 0 24px 48px -24px rgba(0,0,0,.5); }
.mk-figma svg.bg { position: absolute; inset: 0; width: 100%; height: 100%; }
.mk-figma .ov { position: absolute; left: 6%; bottom: 8%; right: 6%; display: flex; justify-content: space-between; align-items: flex-end; }
.mk-figma .ov h5 { margin: 0; font-size: clamp(1rem, 2vw, 1.375rem); letter-spacing: -.025em; font-weight: 620; font-variation-settings: "wdth" 100; line-height: 1; }
.mk-figma .ov span { font-family: var(--mono); font-size: .5625rem; color: var(--mute-dark); display: block; margin-top: 6px; }
.mk-figma .ov .st { background: var(--signal); color: var(--on-signal); font-family: var(--mono); font-size: .5625rem; padding: 4px 8px; border-radius: 4px; }
.mk-loom { width: 88%; aspect-ratio: 16 / 10; border-radius: 8px; background: linear-gradient(160deg, #2A2E33, #15171A); position: relative; overflow: hidden; box-shadow: 0 24px 48px -24px rgba(0,0,0,.5); }
.mk-loom .scr { position: absolute; inset: 8% 8% 18% 8%; border-radius: 4px; background: #E9E8E3; display: grid; grid-template-columns: 28% 1fr; gap: 6%; padding: 5%; }
.mk-loom .scr i { display: block; background: #CFCDC6; border-radius: 3px; }
.mk-loom .scr .r { display: grid; gap: 8px; align-content: start; }
.mk-loom .wm { position: absolute; right: 4%; bottom: 4%; width: 7%; aspect-ratio: 1; color: var(--paper); opacity: .72; }
.mk-loom .cam { position: absolute; left: 4%; bottom: 4%; width: 15%; aspect-ratio: 1; border-radius: 50%; background: #3B4046; border: 2px solid rgba(255,255,255,.2); }
.mk-loom .bar { position: absolute; left: 24%; right: 16%; bottom: 7%; height: 4px; border-radius: 2px; background: rgba(255,255,255,.2); }
.mk-loom .bar::before { content: ""; position: absolute; inset: 0 62% 0 0; background: var(--signal); border-radius: 2px; }
.mk-linear { width: 84%; border-radius: 8px; background: #101113; color: #E6E6E6; font-size: .75rem; box-shadow: 0 24px 48px -24px rgba(0,0,0,.5); overflow: hidden; }
.mk-linear .ws { display: flex; align-items: center; gap: 8px; padding: 12px; border-bottom: 1px solid rgba(255,255,255,.06); font-weight: 600; }
.mk-linear .ws i { width: 22px; height: 22px; border-radius: 6px; background: var(--signal); display: grid; place-items: center; }
.mk-linear .ws i svg { width: 15px; color: var(--ink); }
.mk-linear .it { display: grid; grid-template-columns: 56px 1fr auto; gap: 8px; padding: 9px 12px; border-bottom: 1px solid rgba(255,255,255,.04); color: #B5B5B5; align-items: center; }
.mk-linear .it span:first-child { font-family: var(--mono); font-size: .625rem; color: #77797C; }
.mk-linear .it em { font-style: normal; font-family: var(--mono); font-size: .5625rem; padding: 2px 6px; border-radius: 4px; background: rgba(40,99,251,.14); color: var(--signal); }
.mk-cards { position: relative; width: 100%; height: 100%; }
.mk-card { position: absolute; width: 52%; aspect-ratio: 85 / 55; border-radius: 6px; box-shadow: 0 20px 40px -18px rgba(0,0,0,.5); padding: 5%; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; }
.mk-card.a { left: 8%; top: 18%; background: var(--ink); color: var(--paper); transform: rotate(-4deg); }
.mk-card.b { right: 8%; bottom: 16%; background: var(--paper); color: var(--ink); transform: rotate(3deg); }
.mk-card .ln { font-family: var(--mono); font-size: .5rem; line-height: 1.6; opacity: .8; }
.mk-card b { font-size: .8125rem; letter-spacing: -.02em; display: block; }
.mk-card svg.pt { position: absolute; inset: 0; width: 100%; height: 100%; }
.mk-sig { width: 86%; background: #fff; color: #222; border-radius: 6px; padding: 18px; font-family: Arial, sans-serif; font-size: .75rem; box-shadow: 0 24px 48px -24px rgba(0,0,0,.4); }
.mk-sig .msg { color: #555; border-bottom: 1px solid #eee; padding-bottom: 12px; margin-bottom: 12px; line-height: 1.5; }
.mk-sig .s { display: grid; grid-template-columns: 40px 1fr; gap: 12px; align-items: center; }
.mk-sig .s i { width: 40px; height: 40px; border-radius: 8px; background: #101112; display: grid; place-items: center; }
.mk-sig .s i svg { width: 26px; color: #F5F4F0; }
.mk-sig .s b { display: block; color: #101112; }
.mk-sig .s span { color: #777; font-size: .6875rem; }
.mk-sig .s a { color: #113EBC; text-decoration: none; }

/* ---------- 13 Downloads (terminal) ---------- */
.term { font-family: var(--mono); font-size: .8125rem; line-height: 1.8; }
.term-body { padding: 20px; overflow-x: auto; }
.term .pr { color: var(--signal); }
.term .cm { color: var(--panel-mute); }
.term .dl { display: grid; grid-template-columns: 24px minmax(0, 1fr) auto auto; gap: 12px; align-items: center; padding: 4px 8px; margin: 0 -8px; border-radius: 6px; text-decoration: none; color: var(--panel-fg); }
@media (hover: hover) and (pointer: fine) { .term .dl:hover { background: rgba(245,244,240,.06); } }
.term .dl .ok { color: #3CCB7F; }
.term .dl .sz { color: var(--panel-mute); }
.term .dl .act { color: var(--signal); }
.term .dl .fn { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 600px) { .term .dl { grid-template-columns: 20px minmax(0, 1fr) auto; } .term .dl .sz { display: none; } }
.caret { display: inline-block; width: 8px; height: 15px; background: var(--paper); vertical-align: -3px; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- 14 Changelog ---------- */
.log { border-top: 1px solid var(--line); }
.rel { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 24px; padding: 32px 0; border-bottom: 1px solid var(--line); }
@media (max-width: 700px) { .rel { grid-template-columns: 1fr; gap: 12px; } }
.rel .v { display: grid; gap: 6px; align-content: start; }
.rel .v b { font-size: 1.25rem; letter-spacing: -.02em; }
.rel ul { margin: 12px 0 0; padding-left: 20px; color: var(--fg-2); display: grid; gap: 6px; }
.tag { display: inline-flex; width: fit-content; align-items: center; height: 22px; padding: 0 8px; border-radius: 11px; font-family: var(--mono); font-size: .6875rem; border: 1px solid var(--line-strong); color: var(--mute-c); }
.tag.latest { border-color: var(--signal); color: var(--accent-text); }
.endmark { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; padding-top: 72px; flex-wrap: wrap; }
.endmark svg { width: clamp(96px, 14vw, 180px); color: var(--fg); }

/* Toast */
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 60; transform: translate(-50%, 16px); opacity: 0; pointer-events: none;
  display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 10px; background: var(--ink); color: var(--paper);
  font-family: var(--mono); font-size: .8125rem; box-shadow: 0 16px 40px -12px rgba(0,0,0,.5); border: 1px solid rgba(245,244,240,.1);
  transition: opacity .2s var(--ease-out), transform .3s var(--ease-out); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast i { width: 14px; height: 14px; border-radius: 3px; border: 1px solid rgba(255,255,255,.25); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; scroll-behavior: auto !important; }
  .toast, .menu { transition: opacity .2s ease !important; transform: translate(-50%, 0); }
  .menu { transform: none; }
  .caret { animation: none; }
}

.only-mob { display: none; }
@media (max-width: 860px) { .only-desk { display: none; } .only-mob { display: inline; } }