:root {
  color-scheme: light;
  --paper: #f2f1ed;
  --sheet: #fafaf7;
  --ink: #151412;
  --steel: #5c5a55;
  --faint: #716d65;
  --rule: #d7d4cd;
  --rule-strong: #151412;
  --signal: #b93c0a;
  --brand: #ff5b1f;
  --live: #2f7a12;
  --error: #b3261e;
  --error-fill: #fbe9e7;
  --screen: #0d0d0c;
  --screen-panel: #151513;
  --screen-rule: #2b2a27;
  --screen-ink: #e8e5de;
  --screen-dim: #8a857b;
  --display: 'Archivo', 'Arial Narrow', system-ui, sans-serif;
  --text: 'Archivo', system-ui, sans-serif;
  --mono: 'Martian Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --gutter: clamp(16px, 4vw, 40px);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --paper: #111110;
    --sheet: #181816;
    --ink: #ecebe7;
    --steel: #a3a09a;
    --faint: #8a867e;
    --rule: #2c2b28;
    --rule-strong: #ecebe7;
    --signal: #ff7a45;
    --live: #8fe35f;
    --error: #ffaaa4;
    --error-fill: #2a1311;
    --screen: #090908;
    --screen-panel: #10100f;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--text); font-variation-settings: 'wdth' 100; }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--brand) 32%, transparent); }
h1, h2, h3 { font-family: var(--display); margin: 0; text-wrap: balance; }
h1 { font-size: clamp(42px, 8.2vw, 112px); line-height: .92; font-weight: 800; font-variation-settings: 'wdth' 125; letter-spacing: -.035em; }
h2 { font-size: clamp(30px, 4.2vw, 52px); line-height: 1; font-weight: 750; font-variation-settings: 'wdth' 122; letter-spacing: -.025em; }
h3 { font-size: 19px; line-height: 1.25; font-weight: 700; font-variation-settings: 'wdth' 112; letter-spacing: -.01em; }
p { margin: 0; }
.label { font: 500 11px/1.4 var(--mono); letter-spacing: .09em; text-transform: uppercase; color: var(--steel); font-variation-settings: 'wdth' 87.5; }
.mono { font-family: var(--mono); font-variation-settings: 'wdth' 87.5; }
.num { font-variant-numeric: tabular-nums; }
.lead { font-size: clamp(18px, 1.7vw, 21px); line-height: 1.5; color: var(--steel); max-width: 58ch; }
.prose { max-width: 62ch; color: var(--steel); }
.prose + .prose { margin-top: 14px; }
.signal { color: var(--signal); }

.wrap { max-width: 1240px; margin: 0 auto; padding-inline: var(--gutter); }
.wrap.wide { max-width: none; }

.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
.nav .wrap { display: flex; align-items: center; gap: 24px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 800 17px/1 var(--display); font-variation-settings: 'wdth' 118; letter-spacing: -.01em; }
.brand svg { color: var(--signal); flex: none; }
.brand .tag { font: 500 10px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--steel); border: 1px solid var(--rule); padding: 5px 7px; border-radius: 2px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { font: 500 12px/1 var(--mono); font-variation-settings: 'wdth' 87.5; letter-spacing: .04em; color: var(--steel); text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current] { color: var(--ink); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.lang { display: inline-flex; flex: none; border: 1px solid var(--rule-strong); border-radius: 2px; overflow: hidden; }
.lang a { display: inline-flex; align-items: center; min-height: 34px; padding: 0 11px; font: 600 12.5px/1 var(--text); color: var(--steel); text-decoration: none; }
.lang a[aria-current] { background: var(--ink); color: var(--paper); }
.lang a:not([aria-current]):hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 8%, transparent); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 44px; padding: 0 20px; border: 1px solid var(--rule-strong); border-radius: 2px; background: transparent; color: var(--ink); font: 600 13px/1 var(--mono); font-variation-settings: 'wdth' 87.5; letter-spacing: .02em; text-decoration: none; cursor: pointer; transition: background .15s, color .15s; }
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.solid { background: var(--ink); color: var(--paper); }
.btn.solid:hover { background: var(--signal); border-color: var(--signal); color: var(--paper); }
.btn.small { min-height: 36px; padding: 0 14px; font-size: 12px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero { padding-block: clamp(36px, 6vw, 80px) clamp(40px, 6vw, 72px); display: grid; gap: clamp(18px, 2.4vw, 30px); }
.hero-kicker { color: var(--signal); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(28px, 4vw, 64px); align-items: start; margin-top: clamp(8px, 1.5vw, 18px); }
.hero-copy { display: grid; gap: 26px; align-content: start; }
.hero .note { font: 400 12px/1.6 var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--faint); }

.screen { margin: 0; background: var(--screen); color: var(--screen-ink); border-radius: 4px; overflow: hidden; box-shadow: 0 1px 0 var(--rule), 0 24px 60px -32px rgba(0, 0, 0, .55); }
.screen-bar { display: flex; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--screen-rule); font: 500 10.5px/1.3 var(--mono); font-variation-settings: 'wdth' 87.5; letter-spacing: .08em; text-transform: uppercase; color: var(--screen-dim); }
.screen-bar b { color: var(--brand); font-weight: 500; }
.screen canvas { display: block; width: 100%; aspect-ratio: 16 / 10; max-width: 100%; }
.screen-read { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--screen-rule); }
.screen-read div { padding: 12px 16px; border-left: 1px solid var(--screen-rule); display: grid; gap: 4px; }
.screen-read div:first-child { border-left: 0; }
.screen-read small { font: 500 9.5px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--screen-dim); }
.screen-read strong { font: 700 17px/1.1 var(--display); font-variation-settings: 'wdth' 115; color: var(--screen-ink); font-variant-numeric: tabular-nums; }

.specs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule); }
.specs div { padding: 20px 20px 22px 0; display: grid; gap: 6px; align-content: start; }
.specs div + div { padding-left: 20px; border-left: 1px solid var(--rule); }
.specs strong { font: 800 clamp(26px, 3vw, 36px)/1 var(--display); font-variation-settings: 'wdth' 118; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.specs span { font-size: 14px; color: var(--steel); line-height: 1.45; }
.specs.plate { grid-template-columns: repeat(2, minmax(0, 1fr)); border-bottom: 0; }
.specs.plate div:nth-child(3) { padding-left: 0; border-left: 0; }
.specs.plate div:nth-child(n+3) { border-top: 1px solid var(--rule); }
.caption { font: 400 11px/1.6 var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--faint); max-width: 96ch; }

.sec { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 32px clamp(24px, 4vw, 56px); padding-block: clamp(56px, 8vw, 104px); border-top: 1px solid var(--rule); }
.sec-rail { display: grid; gap: 10px; align-content: start; position: sticky; top: calc(env(safe-area-inset-top, 0px) + 96px); }
.sec-rail .label:first-child { color: var(--signal); }
.sec-body { display: grid; gap: 28px; min-width: 0; }
.sec-body > h2 { max-width: 20ch; }

.chart { width: 100%; height: auto; max-width: 100%; overflow: visible; }
.chart text { font: 500 11px var(--mono); fill: var(--steel); font-variation-settings: 'wdth' 87.5; }
.chart .grid { stroke: var(--rule); stroke-width: 1; fill: none; }
.chart .axis { stroke: var(--rule-strong); stroke-width: 1; fill: none; }
.chart .ceiling { stroke: var(--ink); stroke-width: 1.5; fill: none; }
.chart .ceiling-area { fill: var(--ink); opacity: .05; }
.chart .projected { stroke: var(--signal); stroke-width: 2; stroke-dasharray: 6 4; fill: none; }
.chart .projected-dot { fill: var(--sheet); stroke: var(--signal); stroke-width: 2; }
.chart .strong { fill: var(--ink); font-weight: 600; }
.chart .projected-text { fill: var(--signal); font-weight: 600; }
.chart-wrap { overflow-x: auto; border: 1px solid var(--rule); background: var(--sheet); padding: 20px 16px 8px; border-radius: 2px; }
.chart-wrap .chart { min-width: 560px; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 22px; font: 500 11px/1.4 var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--steel); }
.legend i { display: inline-block; width: 18px; height: 0; border-top: 2px solid var(--ink); vertical-align: middle; margin-right: 8px; }
.legend .p { border-top: 2px dashed var(--signal); }

.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--rule); }
.facts div { padding: 18px 20px 0 0; display: grid; gap: 6px; align-content: start; }
.facts div + div { padding-left: 20px; border-left: 1px solid var(--rule); }
.facts p { font-size: 15px; color: var(--steel); line-height: 1.55; }

.receipt { border: 1px solid var(--rule-strong); border-radius: 2px; background: var(--sheet); }
.receipt-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 12px 18px; border-bottom: 1px solid var(--rule); }
.receipt-hash { padding: 22px 18px; font: 500 clamp(15px, 2.1vw, 24px)/1.5 var(--mono); font-variation-settings: 'wdth' 80; letter-spacing: .02em; font-variant-numeric: tabular-nums; }
.receipt-hash span { display: inline-block; }
.receipt-hash span:nth-child(odd) { color: var(--ink); }
.receipt-hash span:nth-child(even) { color: var(--steel); }
.receipt-foot { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--rule); }
.receipt-foot div { padding: 12px 18px; display: grid; gap: 4px; font-size: 14px; }
.receipt-foot div + div { border-left: 1px solid var(--rule); }

.bars { display: grid; gap: 14px; }
.bar { display: grid; grid-template-columns: 140px minmax(0, 1fr) 64px; gap: 14px; align-items: center; font: 500 12px var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--steel); }
.bar i { display: block; height: 14px; width: var(--w); background: var(--faint); border-radius: 1px; }
.bar.top i { background: var(--ink); }
.bar b { color: var(--ink); font-weight: 600; text-align: right; font-variant-numeric: tabular-nums; }
.bars-scale { display: grid; grid-template-columns: 140px minmax(0, 1fr) 64px; gap: 14px; font: 500 10.5px var(--mono); color: var(--faint); }
.bars-scale span { display: flex; justify-content: space-between; border-top: 1px solid var(--rule); padding-top: 6px; }

.table-wrap { overflow-x: auto; border-top: 1px solid var(--rule-strong); }
table { width: 100%; border-collapse: collapse; min-width: 620px; }
th, td { text-align: left; padding: 14px 16px 14px 0; border-bottom: 1px solid var(--rule); vertical-align: baseline; }
th { font: 500 10.5px/1.3 var(--mono); font-variation-settings: 'wdth' 87.5; letter-spacing: .08em; text-transform: uppercase; color: var(--steel); }
td { font-size: 15px; }
td.model { font: 700 17px/1.2 var(--display); font-variation-settings: 'wdth' 112; }
td.figure { font: 500 13px var(--mono); font-variation-settings: 'wdth' 87.5; font-variant-numeric: tabular-nums; }
td.figure b { font: 700 18px var(--display); font-variation-settings: 'wdth' 112; margin-right: 6px; }
.state { display: inline-flex; align-items: center; gap: 8px; font: 500 11px var(--mono); font-variation-settings: 'wdth' 87.5; letter-spacing: .04em; text-transform: uppercase; color: var(--steel); white-space: nowrap; }
.state::before { content: ''; width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--faint); }
.state.live { color: var(--live); }
.state.live::before { background: var(--live); border-color: var(--live); }
.state.runs::before { background: var(--ink); border-color: var(--ink); }
.state.building { color: var(--signal); }
.state.building::before { border-color: var(--signal); border-style: dashed; }
.muted { color: var(--faint); }

.machines { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--rule-strong); }
.machine { display: grid; gap: 16px; align-content: start; padding: 20px 24px 24px 0; }
.machine + .machine { padding-left: 24px; border-left: 1px solid var(--rule); }
.machine-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px 16px; }
.machine h3 { font-size: 22px; }
.machine dl { margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; border-top: 1px solid var(--rule); padding-top: 14px; }
.machine dt { font: 500 10.5px/1.3 var(--mono); font-variation-settings: 'wdth' 87.5; letter-spacing: .08em; text-transform: uppercase; color: var(--steel); }
.machine dd { margin: 6px 0 0; font: 800 clamp(26px, 3vw, 38px)/1 var(--display); font-variation-settings: 'wdth' 118; letter-spacing: -.02em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.machine dd small { margin-left: 6px; font: 500 12px var(--mono); font-variation-settings: 'wdth' 87.5; letter-spacing: .04em; color: var(--steel); }
.machine p { font-size: 15px; color: var(--steel); line-height: 1.55; }

.defs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 clamp(24px, 4vw, 48px); }
.defs div { display: grid; gap: 6px; padding-block: 18px; border-top: 1px solid var(--rule); }
.defs p { font-size: 15px; color: var(--steel); line-height: 1.55; }
.defs .label { color: var(--signal); }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--rule-strong); padding: 0; margin: 0; }
.steps li { list-style: none; counter-increment: step; padding: 20px 20px 0 0; display: grid; gap: 8px; align-content: start; }
.steps li + li { padding-left: 20px; border-left: 1px solid var(--rule); }
.steps li::before { content: counter(step); font: 800 34px/1 var(--display); font-variation-settings: 'wdth' 125; color: var(--signal); }
.steps p { font-size: 15px; color: var(--steel); line-height: 1.55; }
.steps code { font: 500 12.5px var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--ink); }

.code { border-radius: 4px; background: var(--screen); color: var(--screen-ink); overflow: hidden; }
.code-tabs { display: flex; border-bottom: 1px solid var(--screen-rule); }
.code-tabs button { background: none; border: 0; border-right: 1px solid var(--screen-rule); color: var(--screen-dim); font: 500 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; padding: 12px 16px; cursor: pointer; }
.code-tabs button[aria-selected="true"] { color: var(--brand); background: var(--screen-panel); }
.code pre { margin: 0; padding: 18px; overflow-x: auto; font: 400 12.5px/1.7 var(--mono); font-variation-settings: 'wdth' 87.5; }
.code .k { color: var(--brand); }
.code .d { color: var(--screen-dim); }

.cta { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 32px; align-items: end; padding-block: clamp(48px, 7vw, 88px); border-top: 1px solid var(--rule-strong); }
.cta h2 { margin-top: 14px; }
.cta .prose { margin-top: 18px; }
.cta .contact { display: grid; gap: 12px; justify-items: start; }
.cta .contact code { font: 500 14px var(--mono); user-select: all; }

.foot { border-top: 1px solid var(--rule); padding-block: 28px 40px; }
.foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 32px; font: 500 11.5px/1.6 var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--steel); }
.foot nav { display: flex; flex-wrap: wrap; gap: 18px; }
.foot a { text-decoration: none; }
.foot a:hover { color: var(--ink); }

.diagram { width: 100%; height: auto; max-width: 100%; }
.diagram text { font: 500 11px var(--mono); fill: var(--steel); }
.diagram .box { fill: var(--sheet); stroke: var(--rule-strong); stroke-width: 1; }
.diagram .router { fill: var(--ink); }
.diagram .router-text { fill: var(--paper); font-weight: 600; }
.diagram .strong { fill: var(--ink); font-weight: 600; }
.diagram .tailnet { fill: none; stroke: var(--signal); stroke-width: 1.2; stroke-dasharray: 6 5; }
.diagram .wire { stroke: var(--ink); stroke-width: 1.2; fill: none; }
.diagram .replay { stroke: var(--ink); stroke-width: 1.2; stroke-dasharray: 2 4; fill: none; }
.diagram .signal-text { fill: var(--signal); font-weight: 600; }
.diagram .head { fill: var(--ink); }
.diagram .box.dashed { stroke-dasharray: 4 4; }
.diagram .replay-text { fill: var(--ink); font-weight: 600; }
.diagram-wrap { overflow-x: auto; border: 1px solid var(--rule); background: var(--sheet); padding: 16px; border-radius: 2px; }
.diagram-wrap .diagram { min-width: 600px; }

.form label { display: grid; gap: 8px; font: 500 11px/1.3 var(--mono); font-variation-settings: 'wdth' 87.5; letter-spacing: .06em; text-transform: uppercase; color: var(--steel); }
.form input, .form select { width: 100%; min-height: 44px; padding: 0 12px; border: 1px solid var(--rule); border-bottom-color: var(--rule-strong); border-radius: 2px; background: var(--sheet); color: var(--ink); font: 500 15px var(--mono); font-variation-settings: 'wdth' 87.5; text-transform: none; letter-spacing: 0; }
.form input[type=range] { padding: 0; min-height: 28px; accent-color: var(--signal); background: none; border: 0; }
.form input[type=checkbox] { width: auto; min-height: 0; margin: 0 8px 0 0; accent-color: var(--signal); }
.form output { color: var(--ink); }
.form .check { display: flex; align-items: center; text-transform: none; letter-spacing: 0; font-size: 12px; }
.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 48px); }
.calc .form { display: grid; gap: 18px; align-content: start; }
.readout { border-top: 1px solid var(--rule-strong); display: grid; align-content: start; }
.readout div { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--rule); }
.readout span { font: 500 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--steel); }
.readout strong { font: 800 clamp(24px, 3vw, 34px)/1 var(--display); font-variation-settings: 'wdth' 118; font-variant-numeric: tabular-nums; }
.readout .you strong { color: var(--signal); }

.faq { border-top: 1px solid var(--rule-strong); }
.faq details { border-bottom: 1px solid var(--rule); padding-block: 16px; }
.faq summary { cursor: pointer; font: 700 18px/1.3 var(--display); font-variation-settings: 'wdth' 110; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font: 500 18px var(--mono); color: var(--steel); }
.faq details[open] summary::after { content: '–'; }
.faq p { margin-top: 10px; color: var(--steel); max-width: 64ch; font-size: 16px; }

.check-list { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.check-list div { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--rule); font-size: 15px; color: var(--steel); }
.check-list b { font: 600 12px/1.5 var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--ink); text-transform: uppercase; letter-spacing: .04em; }

body.app { height: 100vh; display: grid; grid-template-rows: auto minmax(0, 1fr); }
body.app .nav-links { margin-left: auto; }
body.app .status { margin-left: 8px; }
.status { display: flex; align-items: center; gap: 8px; font: 500 11.5px var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--steel); white-space: nowrap; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--faint); flex: none; }
.dot.on { background: var(--live); box-shadow: 0 0 0 3px color-mix(in srgb, var(--live) 22%, transparent); }
.dot.off { background: var(--error); }
.console { min-height: 0; display: grid; grid-template-columns: 340px minmax(0, 1fr); }
.side { overflow-y: auto; padding: 24px var(--gutter) 28px; border-right: 1px solid var(--rule); background: var(--sheet); display: grid; gap: 18px; align-content: start; }
.side .label { color: var(--signal); }
.side .row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 12px; }
.hint { font: 400 11px/1.6 var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--faint); }
.snippet { border-top: 1px solid var(--rule); padding-top: 16px; display: grid; gap: 10px; }
.snippet summary { cursor: pointer; font: 600 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--signal); }
.snippet pre { margin: 0; padding: 14px; border-radius: 3px; background: var(--screen); color: var(--screen-ink); font: 400 11px/1.65 var(--mono); font-variation-settings: 'wdth' 87.5; overflow-x: auto; white-space: pre; }
.chat { min-height: 0; display: grid; grid-template-rows: minmax(0, 1fr) auto; }
.messages { overflow-y: auto; padding: 32px var(--gutter); }
.empty { max-width: 720px; margin: 6vh auto 0; display: grid; gap: 16px; }
.empty h2 { font-size: clamp(28px, 3.4vw, 40px); }
.empty p { color: var(--steel); max-width: 56ch; }
.examples { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--rule); margin-top: 8px; }
.examples button { text-align: left; background: none; border: 0; border-bottom: 1px solid var(--rule); padding: 14px 16px 14px 0; color: var(--ink); font: 500 15px/1.4 var(--text); cursor: pointer; }
.examples button:nth-child(even) { padding-left: 16px; border-left: 1px solid var(--rule); }
.examples button:hover { color: var(--signal); }
.msg { max-width: 780px; margin: 0 auto 22px; display: grid; gap: 6px; }
.msg .who { font: 500 10.5px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }
.bubble { white-space: pre-wrap; word-break: break-word; font-size: 16px; line-height: 1.65; }
.msg.user .bubble { padding: 12px 16px; background: var(--sheet); border-left: 2px solid var(--ink); }
.msg.assistant .bubble { padding: 2px 0; }
.bubble.error { padding: 12px 16px; background: var(--error-fill); color: var(--error); border-left: 2px solid var(--error); }
.meta { font: 500 11px var(--mono); font-variation-settings: 'wdth' 87.5; color: var(--steel); font-variant-numeric: tabular-nums; }
.meta:empty { display: none; }
.composer { border-top: 1px solid var(--rule); padding: 14px var(--gutter) 16px; background: var(--paper); }
.composer-row, .composer-meta { max-width: 780px; margin: 0 auto; }
.composer-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; align-items: end; }
.composer textarea { width: 100%; min-height: 46px; max-height: 180px; resize: none; padding: 12px; border: 1px solid var(--rule); border-bottom-color: var(--rule-strong); border-radius: 2px; background: var(--sheet); color: var(--ink); font: 400 16px/1.45 var(--text); }
.composer-meta { display: flex; justify-content: space-between; gap: 12px; margin-top: 8px; font: 500 10.5px var(--mono); color: var(--faint); }
.link { background: none; border: 0; padding: 0; color: var(--steel); font: inherit; cursor: pointer; text-decoration: underline; }

html:lang(ko) {
  --display: 'Archivo', 'Noto Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;
  --text: 'Archivo', 'Noto Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;
  --mono: 'Noto Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;
}
html:lang(ko) body { word-break: keep-all; overflow-wrap: break-word; }
html:lang(ko) .mono { font-family: 'Martian Mono', ui-monospace, Menlo, monospace; }
html:lang(ko) h1 { line-height: 1.12; letter-spacing: -.02em; }
html:lang(ko) h2 { line-height: 1.22; letter-spacing: -.015em; }
html:lang(ko) .label { letter-spacing: .04em; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }

@media (max-width: 1080px) {
  .nav-links { display: none; }
  .nav-actions, body.app .status { margin-left: auto; }
}

@media (max-width: 960px) {
  .hero-grid, .cta, .calc { grid-template-columns: minmax(0, 1fr); }
  .sec { grid-template-columns: minmax(0, 1fr); }
  .sec-rail { position: static; }
  .specs, .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .specs div:nth-child(3), .steps li:nth-child(3) { padding-left: 0; border-left: 0; }
  .specs div:nth-child(n+3), .steps li:nth-child(n+3) { border-top: 1px solid var(--rule); }
  .facts, .receipt-foot, .machines { grid-template-columns: minmax(0, 1fr); }
  .machine { padding-right: 0; }
  .machine + .machine { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
  .facts div + div, .receipt-foot div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
  .receipt-foot div + div { padding-left: 18px; }
  body.app { height: auto; min-height: 100vh; }
  .console { grid-template-columns: minmax(0, 1fr); }
  .side { border-right: 0; border-bottom: 1px solid var(--rule); overflow: visible; }
  .messages { min-height: 55vh; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .nav .wrap { gap: 12px; min-height: 56px; }
  .brand .tag, .nav-actions .btn:not(.solid) { display: none; }
  .lang a { padding: 0 8px; }
  .specs, .steps, .defs, .examples { grid-template-columns: minmax(0, 1fr); }
  .specs div, .specs div + div, .steps li, .steps li + li { padding-left: 0; border-left: 0; }
  .specs div + div, .steps li + li { border-top: 1px solid var(--rule); }
  .examples button:nth-child(even) { padding-left: 0; border-left: 0; }
  .screen-read { grid-template-columns: minmax(0, 1fr); }
  .screen-read div { border-left: 0; border-top: 1px solid var(--screen-rule); }
  .screen-read div:first-child { border-top: 0; }
  .bar, .bars-scale { grid-template-columns: 92px minmax(0, 1fr) 52px; gap: 10px; }
  .code pre { font-size: 11px; }
  .check-list div { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .composer-meta span { display: none; }
}