@font-face { font-family: "Archivo Narrow"; src: url(fonts/archivo-narrow-latin-600-normal.woff2) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Archivo Narrow"; src: url(fonts/archivo-narrow-latin-700-normal.woff2) format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Archivo"; src: url(fonts/archivo-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Archivo"; src: url(fonts/archivo-latin-600-normal.woff2) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url(fonts/jetbrains-mono-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-display: swap; }

:root {
  --film: #F3F5F4;
  --ink: #14171A;
  --ink-2: #4A525A;
  --cobalt: #2350D8;
  --cobalt-wash: #E3E9FB;
  --grid: #DDE2E0;
  --display: "Archivo Narrow", "Arial Narrow", sans-serif;
  --body: "Archivo", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  --gutter: clamp(16px, 4vw, 48px);
  --sheet: 1180px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background-color: var(--film);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--body);
}
a { color: var(--cobalt); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 3px; }
code, kbd, .mono { font-family: var(--mono); font-size: .9em; }
h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.02; letter-spacing: -.01em; margin: 0; text-wrap: balance; }
p { margin: 0 0 1em; max-width: 68ch; }

.sheet { max-width: var(--sheet); margin: 0 auto; padding: 0 var(--gutter); }
.frame { border-left: 1.5px solid var(--ink); border-right: 1.5px solid var(--ink); background: color-mix(in srgb, var(--film) 82%, transparent); }

/* Title block (header) */
.titleblock {
  display: grid; grid-template-columns: auto 1fr auto; align-items: stretch;
  border: 1.5px solid var(--ink); background: var(--film); margin-top: 20px;
}
.titleblock > * { padding: 10px 16px; border-right: 1.5px solid var(--ink); display: flex; align-items: center; }
.titleblock > *:last-child { border-right: 0; }
.wordmark { font: 700 1.5rem/1 var(--display); letter-spacing: .01em; color: var(--ink); text-decoration: none; gap: 10px; }
.wordmark svg { width: 26px; height: 26px; }
.tb-fields { gap: 28px; font: 600 .72rem/1.3 var(--display); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); }
.tb-fields b { display: block; font: 400 .8rem/1.3 var(--mono); letter-spacing: 0; text-transform: none; color: var(--ink); }
.tb-nav { gap: 22px; }
.tb-nav a { color: var(--ink); text-decoration: none; font: 600 1rem/1 var(--display); }
.tb-nav a:hover { color: var(--cobalt); text-decoration: underline; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px;
  border: 1.5px solid var(--ink); font: 700 1.05rem/1 var(--display); letter-spacing: .02em;
  text-decoration: none; color: var(--ink); background: var(--film);
  transition: transform .2s cubic-bezier(.16,1,.3,1), box-shadow .2s cubic-bezier(.16,1,.3,1);
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 3px 3px 0 var(--ink); }
.btn-primary { background: var(--cobalt); border-color: var(--cobalt); color: #fff; }
.btn-primary:hover { box-shadow: 3px 3px 0 var(--ink); }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 32px; padding: 40px 40px 36px; border-bottom: 1.5px solid var(--ink); }
.hero h1 { font-size: clamp(3rem, 7.2vw, 6rem); }
.hero h1 em { font-style: normal; color: var(--cobalt); }
.lede { font-size: 1.2rem; margin-top: 28px; color: var(--ink); }
.lede code { background: var(--cobalt-wash); padding: 1px 6px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-top: 32px; }
.hero-note { font-size: .9rem; color: var(--ink-2); margin: 0; }

.drawing { position: relative; }
.drawing svg { width: 100%; height: auto; max-height: 52vh; display: block; }
.part { fill: none; stroke: var(--ink); stroke-width: 1.5; transition: fill .25s, stroke .25s; }
.part-fill { fill: var(--ink); }
.screen-text { font: 400 13px var(--body); fill: var(--ink); }
.screen-text.dim { fill: var(--ink-2); }
.leader { stroke: var(--cobalt); stroke-width: 1.25; fill: none; stroke-dasharray: 130; stroke-dashoffset: 0; }
.leader-dot { fill: var(--cobalt); }
.balloon circle { fill: var(--film); stroke: var(--cobalt); stroke-width: 1.5; transition: fill .2s; }
.balloon text { font: 700 14px var(--display); fill: var(--cobalt); text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.balloon { cursor: pointer; }
[data-active] .balloon.on circle { fill: var(--cobalt); }
[data-active] .balloon.on text { fill: #fff; }
.part.on { fill: var(--cobalt-wash); stroke: var(--cobalt); stroke-width: 2; }
.view-caption { font: 600 .78rem/1.3 var(--display); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); margin-top: 10px; display: flex; justify-content: space-between; gap: 12px; }

.callouts { list-style: none; margin: 12px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.callouts button {
  width: 100%; text-align: left; display: flex; gap: 10px; align-items: center; padding: 9px 12px;
  border: 1.5px solid var(--ink); background: var(--film); color: var(--ink); cursor: pointer;
  font: 400 .85rem/1.2 var(--mono);
}
.callouts button span { flex: none; width: 24px; height: 24px; border: 1.5px solid var(--cobalt); border-radius: 50%; display: grid; place-items: center; font: 700 .8rem/1 var(--display); color: var(--cobalt); }
.callouts button[aria-pressed="true"] { border-color: var(--cobalt); background: var(--cobalt-wash); }
.callouts button[aria-pressed="true"] span { background: var(--cobalt); color: #fff; }
.console { margin-top: 10px; background: var(--ink); color: var(--film); font: 400 .85rem/1.55 var(--mono); padding: 14px 16px; min-height: 5.2em; }
.console .ok { color: #9DB6FF; }

@media (prefers-reduced-motion: no-preference) {
  .drawing.draw .leader { animation: draw 1.1s cubic-bezier(.16,1,.3,1) both; }
  .drawing.draw .leader:nth-of-type(2) { animation-delay: .12s; }
  .drawing.draw .leader:nth-of-type(3) { animation-delay: .24s; }
  .drawing.draw .leader:nth-of-type(4) { animation-delay: .36s; }
  @keyframes draw { from { stroke-dashoffset: 130; } to { stroke-dashoffset: 0; } }
}

/* Views */
.view { padding: 72px 40px; border-bottom: 1.5px solid var(--ink); }
.view h2 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); max-width: 18ch; margin-bottom: 20px; }
.view-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: end; margin-bottom: 44px; }
.view-head p { color: var(--ink-2); margin: 0; }
.tag { font: 600 .78rem/1.3 var(--display); letter-spacing: .1em; text-transform: uppercase; color: var(--cobalt); margin-bottom: 14px; display: block; }

/* Detail A: pixels vs names */
.detail { display: grid; grid-template-columns: 1fr 1fr; border: 1.5px solid var(--ink); }
.detail > div { padding: 28px; }
.detail > div + div { border-left: 1.5px solid var(--ink); background: var(--film); }
.detail h3 { font-size: 1.5rem; margin-bottom: 14px; }
.detail pre { margin: 0 0 16px; padding: 14px 16px; background: var(--ink); color: var(--film); font: 400 .9rem/1.6 var(--mono); overflow-x: auto; }
.detail .struck { text-decoration: line-through; text-decoration-color: var(--ink-2); color: var(--ink-2); }
.detail ul { margin: 0; padding-left: 1.1em; }
.detail li { margin-bottom: 6px; }
.resolve { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font: 400 .82rem/1 var(--mono); margin: 0 0 16px; padding: 0; list-style: none; }
.resolve li { border: 1.5px solid var(--cobalt); color: var(--cobalt); padding: 5px 8px; margin: 0; }
.resolve li + li::before { content: "→"; margin: 0 8px 0 -2px; color: var(--ink-2); }
.resolve li + li { border-left-width: 1.5px; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); counter-reset: v; border-top: 1.5px solid var(--ink); }
.step { padding: 28px 28px 8px 0; position: relative; }
.step + .step { padding-left: 28px; border-left: 1.5px dashed var(--ink-2); }
.step .vlabel { font: 600 .78rem/1 var(--display); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); display: block; margin-bottom: 16px; }
.step h3 { font-size: 1.9rem; margin-bottom: 12px; }
.step code { display: block; margin-top: 14px; padding: 10px 12px; border: 1.5px solid var(--ink); background: var(--film); font-size: .85rem; overflow-wrap: anywhere; }

/* Scale bars */
.scale { border: 1.5px solid var(--ink); background: var(--film); padding: 28px; }
.scale + .scale { border-top: 0; }
.scale h3 { font-size: 1.35rem; margin-bottom: 4px; }
.scale .sub { font-size: .92rem; color: var(--ink-2); margin-bottom: 22px; }
.bar { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 16px; align-items: center; margin-bottom: 14px; }
.bar-label { font-size: .95rem; }
.bar-track { position: relative; height: 22px; border-left: 1.5px solid var(--ink); }
.bar-fill { position: absolute; left: 0; top: 4px; bottom: 4px; background: var(--ink); min-width: 3px; }
.bar-fill.accent { background: var(--cobalt); }
.bar-value { position: absolute; top: 50%; transform: translateY(-50%); font: 400 .85rem/1 var(--mono); white-space: nowrap; padding-left: 8px; }
.ruler { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 16px; }
.ruler-ticks { position: relative; height: 26px; border-top: 1.5px solid var(--ink); font: 400 .75rem/1 var(--mono); color: var(--ink-2); }
.ruler-ticks span { white-space: nowrap; position: absolute; top: 0; padding-top: 8px; transform: translateX(-50%); }
.ruler-ticks span::before { content: ""; position: absolute; top: -1px; left: 50%; height: 6px; border-left: 1.5px solid var(--ink); }
.ruler-ticks span:first-child { transform: none; }
.ruler-ticks span:first-child::before { left: 0; }
.ruler-ticks span:last-child { transform: translateX(-100%); }
.ruler-ticks span:last-child::before { left: auto; right: 0; }
.footnote { font-size: .85rem; color: var(--ink-2); margin-top: 18px; }

/* Harvest */
.harvest { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 40px; align-items: start; }
.harvest pre { margin: 0; background: var(--ink); color: var(--film); padding: 20px; font: 400 .88rem/1.65 var(--mono); overflow-x: auto; }
.harvest pre .c { color: #9AA3AC; }
.harvest pre .ok { color: #9DB6FF; }
.compare { list-style: none; padding: 0; margin: 24px 0 0; border-top: 1.5px solid var(--ink); }
.compare li { display: grid; grid-template-columns: 1fr auto; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--ink-2); }
.compare li b { font-family: var(--display); font-size: 1.1rem; }

/* Access band */
.access { background: var(--ink); color: var(--film); padding: 72px 40px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 40px; align-items: end; }
.access h2 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
.access p { color: #C9CFD4; }
.access a.mail { color: #fff; font: 400 1.05rem var(--mono); }
.access .btn { background: var(--film); color: var(--ink); border-color: var(--film); }
.access .btn:hover { box-shadow: 3px 3px 0 var(--cobalt); }

/* Footer title block */
.foot { display: grid; grid-template-columns: 1fr auto auto auto; border: 1.5px solid var(--ink); border-top: 0; background: var(--film); margin-bottom: 28px; font-size: .9rem; }
.foot > * { padding: 14px 16px; border-right: 1.5px solid var(--ink); }
.foot > *:last-child { border-right: 0; }
.foot a { color: var(--ink); }
.foot .tm { grid-column: 1 / -1; border-right: 0; border-top: 1.5px solid var(--ink); font-size: .8rem; color: var(--ink-2); }

/* Legal pages */
.legal { padding: 56px 40px 72px; border-bottom: 1.5px solid var(--ink); }
.legal h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); margin-bottom: 8px; }
.legal .en { color: var(--ink-2); margin-bottom: 40px; }
.legal h2 { font-size: 1.5rem; margin: 40px 0 10px; }
.legal h3 { font-size: 1.15rem; margin: 24px 0 6px; font-family: var(--body); font-weight: 600; }
.legal address { font-style: normal; line-height: 1.7; margin-bottom: 1em; }
.legal ul { max-width: 68ch; padding-left: 1.2em; }
.legal li { margin-bottom: 6px; }
.todo { background: #FFE8A3; padding: 0 4px; }

@media (max-width: 900px) {
  .titleblock { grid-template-columns: 1fr auto; }
  .tb-fields { display: none; }
  .hero, .view-head, .detail, .harvest, .access { grid-template-columns: minmax(0, 1fr); }
  .drawing svg { max-height: none; }
  .hero { padding: 40px 20px 32px; }
  .view, .access, .legal { padding: 52px 20px; }
  .detail > div + div { border-left: 0; border-top: 1.5px solid var(--ink); }
  .steps { grid-template-columns: 1fr; }
  .step, .step + .step { padding: 24px 0 8px; border-left: 0; }
  .step + .step { border-top: 1.5px dashed var(--ink-2); }
  .bar, .ruler { grid-template-columns: 1fr; gap: 6px; }
  .ruler > :first-child { display: none; }
  .foot { grid-template-columns: 1fr 1fr; }
  .foot > *:first-child { grid-column: 1 / -1; border-right: 0; border-bottom: 1.5px solid var(--ink); }
}
@media (max-width: 520px) {
  .tb-nav a:not(.tb-cta) { display: none; }
  .callouts { grid-template-columns: 1fr; }
  .scale, .detail > div { padding: 20px; }
}