@font-face {
  font-family: "Archivo Tint";
  src: url("./fonts/archivo-800.ttf") format("truetype");
  font-style: normal;
  font-weight: 800;
  font-display: swap;
}

:root {
  --background: #F8FAFF;
  --surface: #EDF2FC;
  --surface-variant: #DCE5F4;
  --border: #C7D3E6;
  --text: #111B2D;
  --text-muted: #52627A;
  --primary: #1747B8;
  --on-primary: #FFFFFF;
  --primary-container: #D9E4FF;
  --on-primary-container: #102655;
  --focus: #2563EB;
  --source-primary: #2563EB;
  --source-secondary: #64748B;
  --nav-height: 4.75rem;
  --radius: 0.75rem;
  font-family: "Aptos", "Segoe UI Variable Text", "Segoe UI", system-ui, sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--background); }
body { margin: 0; min-width: 20rem; background: var(--background); color: var(--text); font-size: 1rem; line-height: 1.55; }
button, input, select { font: inherit; }
button, a, input, select { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
::selection { background: var(--primary); color: var(--on-primary); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
::-webkit-scrollbar { width: 0.75rem; height: 0.75rem; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: var(--border); border: 3px solid var(--surface); border-radius: 1rem; }

.site-nav { position: fixed; z-index: 20; inset: 0 0 auto; min-height: var(--nav-height); background: color-mix(in srgb, var(--background) 94%, transparent); border-bottom: 1px solid var(--border); backdrop-filter: blur(14px); }
.nav-inner { max-width: 94rem; min-height: var(--nav-height); margin: 0 auto; padding: 0.65rem 1.5rem; display: flex; align-items: center; gap: 1.25rem; }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand-logo, .brand-logo img { display: block; width: 6.6875rem; height: 2.1875rem; }
.brand-logo .brand-logo-dark { display: none; }
[data-theme="dark"] .brand-logo .brand-logo-light { display: none; }
[data-theme="dark"] .brand-logo .brand-logo-dark { display: block; }
.nav-links { display: flex; align-items: center; gap: 0.25rem; }
.nav-links a { padding: 0.48rem 0.72rem; color: var(--text-muted); text-decoration: none; border-radius: var(--radius, 0.6rem); font-size: 0.92rem; font-weight: 650; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); background: var(--surface); }
.nav-tools { margin-left: auto; display: flex; align-items: center; gap: 0.55rem; }
.color-control { position: relative; display: flex; align-items: center; height: 2.65rem; border: 1px solid var(--border); background: var(--surface); border-radius: var(--radius, 0.6rem); overflow: hidden; }
.color-control:focus-within { border-color: var(--focus); box-shadow: 0 0 0 2px color-mix(in srgb, var(--focus) 22%, transparent); }
.color-control.is-invalid { border-color: #C73B46; }
.color-control input[type="color"] { width: 2.55rem; height: 100%; padding: 0.45rem; border: 0; background: transparent; cursor: pointer; }
.color-control input[type="text"] { width: 6.4rem; height: 100%; padding: 0 0.7rem 0 0.2rem; border: 0; outline: 0; background: transparent; color: var(--text); font: 650 0.86rem/1 ui-monospace, "Cascadia Code", monospace; text-transform: uppercase; }
.icon-button, .secondary-toggle { min-width: 2.65rem; height: 2.65rem; display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem; border: 1px solid var(--border); background: var(--surface); border-radius: var(--radius, 0.6rem); cursor: pointer; }
.icon-button:hover, .secondary-toggle:hover { background: var(--surface-variant); }
.icon-button svg { width: 1.15rem; height: 1.15rem; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.secondary-toggle { padding: 0 0.8rem; color: var(--text-muted); font-size: 0.86rem; font-weight: 650; }
.secondary-toggle::before { content: ''; width: 0.75rem; height: 0.75rem; background: var(--source-secondary); border: 1px solid var(--border); border-radius: 50%; }
.secondary-toggle.has-color { color: var(--text); }
.secondary-panel { position: absolute; top: calc(100% + 0.5rem); right: 4.5rem; width: 18rem; padding: 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius, 0.6rem); box-shadow: 0 1rem 2.8rem rgba(5, 15, 35, 0.18); }
.secondary-panel[hidden] { display: none; }
.secondary-panel label { display: block; margin-bottom: 0.55rem; font-weight: 700; }
.secondary-panel .color-control { width: 100%; }
.secondary-panel .color-control input[type="text"] { flex: 1; }
.text-button { margin-top: 0.7rem; padding: 0; border: 0; background: none; color: var(--text-muted); cursor: pointer; text-decoration: underline; text-underline-offset: 0.22em; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

main { padding-top: var(--nav-height); }
.page-shell { max-width: 94rem; margin: 0 auto; padding: 0 1.5rem; }
.landing-intro { min-height: calc(100vh - var(--nav-height)); display: grid; grid-template-columns: minmax(18rem, 0.72fr) minmax(34rem, 1.6fr); gap: clamp(2rem, 5vw, 6rem); align-items: center; padding-top: 4rem; padding-bottom: 4rem; }
.intro-copy { max-width: 35rem; }
.intro-copy h1, .page-header h1 { margin: 0 0 1.4rem; font-size: clamp(2.8rem, 5vw, 5.6rem); line-height: 0.96; letter-spacing: -0.04em; font-weight: 760; text-wrap: balance; }
.intro-copy h1, .page-header h1, .section-heading h2, .how-inner h2, .data-section h2, .closing-note h2, .demo-content h2 { font-family: "Archivo Tint", "Aptos", sans-serif; font-weight: 800; }
.intro-copy p { max-width: 31rem; margin: 0; color: var(--text-muted); font-size: 1.12rem; line-height: 1.7; }
.intro-actions { display: flex; align-items: center; gap: 1rem; margin-top: 2rem; }
.primary-action, .secondary-action { min-height: 2.9rem; display: inline-flex; align-items: center; justify-content: center; padding: 0.68rem 1rem; border-radius: var(--radius, 0.6rem); font-weight: 720; text-decoration: none; }
.primary-action { background: var(--primary); color: var(--on-primary); border: 1px solid var(--primary); }
.primary-action:hover { filter: brightness(1.05); }
.secondary-action { color: var(--text); border: 1px solid var(--border); background: var(--surface); }
.micro-note { font-size: 0.82rem; color: var(--text-muted); }

.preview-frame { position: relative; min-width: 0; }
.preview-shell { min-height: 35rem; display: grid; grid-template-columns: 10.5rem 1fr; overflow: hidden; background: var(--demo-bg); color: var(--demo-text); border: 1px solid var(--demo-border); border-radius: var(--radius, 0.6rem); transition: background-color 220ms ease-out, color 220ms ease-out; }
.demo-sidebar { padding: 1.25rem 0.9rem; background: var(--demo-surface); border-right: 1px solid var(--demo-border); }
.demo-logo { display: flex; align-items: center; gap: 0.55rem; margin-bottom: 2rem; font-weight: 760; }
.demo-logo i { width: 1.4rem; height: 1.4rem; background: var(--demo-primary); border-radius: 0.35rem; }
.demo-nav { display: grid; gap: 0.35rem; }
.demo-nav span { padding: 0.56rem 0.65rem; border-radius: var(--radius, 0.6rem); color: var(--demo-muted); font-size: 0.84rem; font-weight: 650; }
.demo-nav span.active { color: var(--demo-primary); background: var(--demo-variant); }
.demo-main { min-width: 0; padding: 1.5rem; }
.demo-topbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 3rem; }
.demo-search { width: min(17rem, 60%); min-height: 2.35rem; padding: 0 0.75rem; border: 1px solid var(--demo-border); background: var(--demo-surface); color: var(--demo-text); border-radius: var(--radius, 0.6rem); }
.demo-avatar { width: 2.3rem; height: 2.3rem; display: grid; place-items: center; border-radius: 50%; background: var(--demo-primary); color: var(--demo-on-primary); font-weight: 750; }
.demo-content h2 { margin: 0 0 0.7rem; font-size: clamp(1.8rem, 3vw, 3.15rem); line-height: 1.03; letter-spacing: -0.035em; max-width: 13ch; }
.demo-content > p { max-width: 35rem; color: var(--demo-muted); }
.demo-actions { display: flex; gap: 0.7rem; margin: 1.6rem 0 2.6rem; }
.demo-actions button { min-height: 2.6rem; padding: 0.55rem 0.85rem; border-radius: var(--radius, 0.6rem); border: 1px solid var(--demo-border); background: var(--demo-surface); color: var(--demo-text); font-weight: 700; }
.demo-actions button:first-child { border-color: var(--demo-primary); background: var(--demo-primary); color: var(--demo-on-primary); }
.demo-actions button[data-secondary-action] { border-color: var(--demo-secondary); background: var(--demo-secondary); color: var(--demo-on-secondary); }
.demo-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(15rem, 0.8fr); gap: 1rem; align-items: start; }
.demo-stack { display: grid; gap: 1rem; }
.demo-notice { display: grid; gap: 0.3rem; padding: 1rem; border-radius: var(--radius, 0.6rem); background: var(--demo-primary-container); color: var(--demo-on-primary-container); }
.demo-notice span { font-size: 0.78rem; line-height: 1.45; }
.demo-intents { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.55rem; }
.demo-intents span { padding: 0.65rem; border-radius: 0.45rem; font-size: 0.72rem; font-weight: 750; }
.demo-intents .success { background: var(--demo-success-container); color: var(--demo-on-success-container); }
.demo-intents .info { background: var(--demo-info-container); color: var(--demo-on-info-container); }
.demo-intents .warning { background: var(--demo-warning-container); color: var(--demo-on-warning-container); }
.demo-intents .danger { background: var(--demo-danger-container); color: var(--demo-on-danger-container); }
.demo-form { display: grid; gap: 0.7rem; padding: 1rem; border: 1px solid var(--demo-border); border-radius: var(--radius, 0.6rem); background: var(--demo-surface); }
.demo-form label { display: grid; gap: 0.3rem; color: var(--demo-muted); font-size: 0.72rem; font-weight: 650; }
.demo-form input:not([type="checkbox"]), .demo-form textarea { width: 100%; padding: 0.6rem; border: 1px solid var(--demo-border); border-radius: var(--radius, 0.6rem); background: var(--demo-bg); color: var(--demo-text); font: inherit; resize: vertical; }
.demo-form .demo-check { display: flex; align-items: center; gap: 0.45rem; }
.demo-check input { accent-color: var(--demo-secondary); }
.demo-form button { justify-self: start; padding: 0.6rem 0.8rem; border: 1px solid var(--demo-primary); border-radius: var(--radius, 0.6rem); background: var(--demo-primary); color: var(--demo-on-primary); font-weight: 700; }
.demo-list { border-top: 1px solid var(--demo-border); }
.demo-list article { display: grid; grid-template-columns: 1.4fr 0.75fr auto; gap: 1rem; align-items: center; padding: 1rem 0; border-bottom: 1px solid var(--demo-border); }
.demo-list strong { font-size: 0.9rem; }
.demo-list span { color: var(--demo-muted); font-size: 0.8rem; }
.demo-list em { padding: 0.24rem 0.48rem; border-radius: 0.35rem; background: var(--demo-variant); color: var(--demo-primary); font-size: 0.72rem; font-style: normal; font-weight: 750; }

.essential-section { padding: 6rem 0 7rem; border-top: 1px solid var(--border); }
.section-heading { display: grid; grid-template-columns: minmax(15rem, 0.7fr) minmax(20rem, 1.2fr); gap: 3rem; align-items: end; margin-bottom: 2.2rem; }
.section-heading h2 { margin: 0; font-size: clamp(2rem, 3.5vw, 3.8rem); line-height: 1.03; letter-spacing: -0.035em; }
.section-heading p { margin: 0; color: var(--text-muted); max-width: 44rem; }
.essential-colors { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 1px; padding: 1px; background: var(--border); border-radius: var(--radius); overflow: hidden; }
.essential-swatch { min-width: 0; padding: 0; text-align: left; border: 0; background: var(--surface); cursor: pointer; }
.essential-swatch .color-chip { display: block; height: 8rem; background: var(--swatch); }
.essential-swatch > span:last-child { display: grid; gap: 0.2rem; padding: 0.85rem; }
.essential-swatch strong { font-size: 0.78rem; text-transform: capitalize; }
code { font-family: ui-monospace, "Cascadia Code", monospace; font-size: 0.78rem; color: var(--text-muted); }
.is-copied { box-shadow: inset 0 0 0 3px var(--focus); }
.adjustment-notice { display: flex; align-items: flex-start; gap: 0.75rem; max-width: 55rem; margin-top: 1.25rem; color: var(--text-muted); font-size: 0.9rem; }
.adjustment-notice strong { color: var(--text); }
.status-mark { width: 1.55rem; height: 1.55rem; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: var(--surface-variant); color: var(--primary); font-weight: 850; }
.adjustment-notice.is-adjusted .status-mark { background: var(--primary-container); color: var(--on-primary-container); }

.how-section { padding: 7rem 0; background: var(--text); color: var(--background); }
.how-inner { max-width: 94rem; margin: 0 auto; padding: 0 1.5rem; }
.how-inner h2 { max-width: 14ch; margin: 0 0 4rem; font-size: clamp(2.4rem, 4vw, 4.6rem); line-height: 1.02; letter-spacing: -0.04em; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid color-mix(in srgb, var(--background) 25%, transparent); }
.step { padding: 2rem 2rem 0 0; }
.step + .step { padding-left: 2rem; border-left: 1px solid color-mix(in srgb, var(--background) 25%, transparent); }
.step span { display: block; margin-bottom: 3.5rem; color: color-mix(in srgb, var(--background) 55%, transparent); font: 700 0.8rem/1 ui-monospace, monospace; }
.step h3 { margin: 0 0 0.8rem; font-size: 1.35rem; }
.step p { max-width: 25rem; margin: 0; color: color-mix(in srgb, var(--background) 72%, transparent); }

.page-header { padding: 5rem 0 3rem; border-bottom: 1px solid var(--border); }
.page-header h1 { max-width: 13ch; font-size: clamp(2.8rem, 5vw, 5.2rem); }
.page-header p { max-width: 46rem; margin: 0; color: var(--text-muted); font-size: 1.08rem; }
.palette-toolbar { position: sticky; z-index: 10; top: var(--nav-height); display: flex; align-items: center; gap: 0.65rem; padding: 0.8rem 0; background: color-mix(in srgb, var(--background) 94%, transparent); border-bottom: 1px solid var(--border); backdrop-filter: blur(14px); }
.toolbar-label { margin-right: auto; color: var(--text-muted); font-size: 0.88rem; }
select { min-height: 2.65rem; padding: 0 2.5rem 0 0.8rem; border: 1px solid var(--border); border-radius: var(--radius, 0.6rem); background: var(--surface); color: var(--text); cursor: pointer; }
.export-button { min-height: 2.65rem; display: inline-flex; align-items: center; gap: 0.5rem; padding: 0 0.9rem; border: 1px solid var(--primary); border-radius: var(--radius, 0.6rem); background: var(--primary); color: var(--on-primary); font-weight: 730; cursor: pointer; }
.export-button svg { width: 1rem; fill: none; stroke: currentColor; stroke-width: 2; }
.ramps-wrap { padding: 2rem 0 4rem; }
.ramp-section { padding: 4rem 0; border-bottom: 1px solid var(--border); }
.compact-heading { display: block; margin-bottom: 1.5rem; }
.compact-heading h2 { font-size: 1.8rem; margin-bottom: 0.35rem; }
.ramp-grid { display: grid; grid-template-columns: repeat(12, minmax(4.5rem, 1fr)); overflow-x: auto; border-radius: var(--radius); }
.ramp-swatch { min-width: 4.5rem; min-height: 12rem; container-type: inline-size; display: flex; flex-direction: column; justify-content: flex-end; align-items: flex-start; gap: 0.18rem; padding: 0.75rem 0.55rem; border: 0; border-right: 1px solid rgba(255,255,255,0.28); background: var(--swatch); color: var(--swatch-text); cursor: pointer; text-align: left; }
.ramp-swatch span { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 0.35rem; margin-bottom: auto; font: 720 0.72rem/1 ui-monospace, monospace; }
.ramp-swatch em { padding: 0.18rem 0.3rem; border-radius: 0.25rem; background: var(--swatch-text); color: var(--swatch); font: 750 0.55rem/1 ui-monospace, monospace; font-style: normal; letter-spacing: 0.04em; text-transform: uppercase; }
.ramp-swatch.is-source { position: relative; z-index: 1; box-shadow: inset 0 0 0 3px currentColor; }
.ramp-swatch strong { font: 720 0.7rem/1.2 ui-monospace, monospace; }
.ramp-swatch small { display: flex; flex-wrap: wrap; gap: 0.12rem 0.4rem; font-size: 0.62rem; opacity: 0.78; }
.ramp-swatch small span { width: auto; display: inline; margin: 0; white-space: nowrap; font: inherit; }
@container (max-width: 6.5rem) { .ramp-swatch small { flex-direction: column; gap: 0.08rem; } }
.data-section { padding: 5rem 0; border-bottom: 1px solid var(--border); }
.data-grid { display: grid; grid-template-columns: minmax(35rem, 1.25fr) minmax(20rem, 0.75fr); gap: 4rem; align-items: start; }
.data-grid > * { min-width: 0; }
.data-section h2 { margin: 0 0 0.7rem; font-size: 2rem; letter-spacing: -0.025em; }
.data-section > p, .data-intro { margin: 0 0 1.5rem; color: var(--text-muted); }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { padding: 0.8rem 0.9rem; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
thead th { background: var(--surface); color: var(--text-muted); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
tbody th { font-weight: 700; }
.inline-swatch { width: 1.35rem; height: 1.35rem; margin-right: 0.55rem; padding: 0; vertical-align: middle; overflow: hidden; border: 1px solid var(--border); border-radius: 0.28rem; background: transparent; cursor: pointer; }
.inline-swatch::-webkit-color-swatch-wrapper { padding: 0; }
.inline-swatch::-webkit-color-swatch, .inline-swatch::-moz-color-swatch { border: 0; }
.token-edit { display: inline-flex; align-items: center; }
.token-edit input[data-token-input] { width: 6.7rem; padding: 0.35rem 0.45rem; border: 1px solid transparent; border-radius: 0.35rem; background: transparent; color: var(--text); font: 0.78rem ui-monospace, "Cascadia Code", monospace; text-transform: uppercase; }
.token-edit input[data-token-input]:hover, .token-edit input[data-token-input]:focus { border-color: var(--border); background: var(--surface); outline: none; }
.token-edit input[data-token-input].is-invalid { border-color: #B52D3A; }
.reset-token { padding: 0.25rem 0.45rem; border: 1px solid var(--border); border-radius: 0.35rem; background: var(--surface); color: var(--text); font-size: 0.72rem; cursor: pointer; }
.grade, .adjusted-badge { display: inline-block; margin-left: 0.35rem; padding: 0.14rem 0.38rem; border-radius: 0.3rem; background: var(--surface-variant); color: var(--text); font-size: 0.68rem; font-weight: 750; }
.adjusted-badge { background: var(--primary-container); color: var(--on-primary-container); }
.contrast-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border); }
.contrast-list li { display: flex; justify-content: space-between; gap: 1.5rem; padding: 1rem 0; border-bottom: 1px solid var(--border); }
.contrast-pair { display: flex; align-items: center; gap: 0.75rem; }
.contrast-pair i { width: 2.7rem; height: 2.7rem; display: grid; place-items: center; background: var(--bg); color: var(--fg); border: 1px solid var(--border); border-radius: 0.45rem; font-style: normal; font-weight: 750; }
.contrast-pair span, .ratio { display: grid; }
.contrast-list small { color: var(--text-muted); font-size: 0.7rem; }
.ratio { text-align: right; }
.ratio.pass strong::before { content: '✓ '; }
.ratio.fail strong::before { content: '× '; }
.ratio.fail { color: #B52D3A; }
.closing-note { padding: 5rem 0 7rem; }
.closing-note h2 { max-width: 18ch; margin: 0 0 1rem; font-size: clamp(2rem, 4vw, 4rem); line-height: 1.05; letter-spacing: -0.035em; }
.closing-note p { max-width: 44rem; margin: 0; color: var(--text-muted); }
.site-footer { padding: 1.5rem; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 0.82rem; }
.footer-inner { max-width: 94rem; margin: 0 auto; display: flex; justify-content: space-between; gap: 1rem; }

.components-page { padding-bottom: 7rem; }
.component-header { display: grid; grid-template-columns: minmax(24rem, 1fr) minmax(20rem, 0.75fr); gap: 4rem; align-items: end; padding: 5rem 0 4rem; border-bottom: 1px solid var(--border); }
.component-header h1 { max-width: 13ch; margin: 0; font-family: "Archivo Tint", "Aptos", sans-serif; font-size: clamp(3rem, 5vw, 5.5rem); font-weight: 800; line-height: 0.97; letter-spacing: -0.04em; }
.component-header p { max-width: 42rem; margin: 0; color: var(--text-muted); font-size: 1.05rem; }
.component-header-copy { display: grid; gap: 1.25rem; }
.component-layout { display: grid; grid-template-columns: 11rem minmax(0, 1fr); gap: 4rem; align-items: start; }
.component-index { position: sticky; top: calc(var(--nav-height) + 2rem); display: grid; padding-top: 4rem; }
.component-index a { padding: 0.6rem 0; border-bottom: 1px solid var(--border); color: var(--text-muted); font-size: 0.86rem; text-decoration: none; }
.component-index a:hover { color: var(--primary); }
.component-catalog { min-width: 0; }
.specimen-section { scroll-margin-top: calc(var(--nav-height) + 2rem); padding: 4rem 0; }
.specimen-section > header { display: block; margin-bottom: 2rem; }
.specimen-section h2 { margin: 0; font-family: "Archivo Tint", "Aptos", sans-serif; font-size: 2rem; letter-spacing: -0.025em; }
.specimen-section > header p { max-width: 46rem; margin: 0.85rem 0 0; color: var(--text-muted); }
.specimen-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.65rem; }
.specimen-form { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; align-items: start; }
.specimen-form fieldset { min-height: 100%; }
.typography-specimen { display: grid; grid-template-columns: minmax(0, 1fr); max-width: 72ch; line-height: 1.62; }
#actions .specimen-row + .specimen-row { margin-top: 1rem; }
.toast-demo { display: grid; gap: 0.8rem; }
.toast-demo p { margin: 0; color: var(--text-muted); font-size: 0.86rem; }
.component-sources { display: grid; min-width: 0; margin-top: 2rem; }
.component-source { min-width: 0; margin: 0; border-top: 1px solid var(--border); }
.component-source summary { padding: 0.8rem 0; color: var(--text-muted); font-size: 0.82rem; font-weight: 700; cursor: pointer; }
.component-source summary:hover { color: var(--primary); }
.component-source pre { box-sizing: border-box; width: 100%; max-width: 100%; max-height: 24rem; margin: 0; overflow: auto; padding: 1rem; border-radius: var(--radius, 0.6rem); background: var(--surface-variant); color: var(--text); }
.component-source code { font: 0.78rem/1.55 ui-monospace, "Cascadia Code", monospace; white-space: pre; }
.download-builder { display: grid; grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.55fr); gap: 2rem 4rem; align-items: end; }
.download-builder .tint-choice-group { gap: 0; padding-block: 0.25rem; }
.download-option { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0 0.75rem; align-items: center; padding: 0.9rem 0.55rem; }
.download-option + .download-option { border-top: 1px solid var(--border); }
.download-option input { grid-row: 1 / span 2; }
.download-option strong { font-size: 0.92rem; }
.download-option small { color: var(--text-muted); font-size: 0.78rem; font-weight: 500; line-height: 1.4; }
.download-action { display: grid; gap: 0.7rem; justify-items: start; }
.download-action p { margin: 0; color: var(--text-muted); font-size: 0.84rem; }
.component-token-table { max-width: 42rem; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius, 0.6rem); }
.token-value-field { display: inline-grid; grid-template-columns: minmax(5rem, 8rem) auto; align-items: center; border: 1px solid var(--border); border-radius: var(--radius, 0.6rem); background: var(--surface); overflow: hidden; }
.token-value-field input { min-width: 0; min-height: 2.45rem; padding: 0.5rem 0.65rem; border: 0; background: transparent; color: var(--text); font: inherit; }
.token-value-field span { padding-inline: 0.65rem; color: var(--text-muted); font-size: 0.8rem; }
.token-text-input { width: min(10rem, 100%); min-height: 2.45rem; padding: 0.5rem 0.65rem; border: 1px solid var(--border); border-radius: var(--radius, 0.6rem); background: var(--surface); color: var(--text); font: inherit; }
.token-value-field:focus-within, .token-text-input:focus { border-color: var(--focus); outline: none; box-shadow: 0 0 0 2px color-mix(in srgb, var(--focus) 22%, transparent); }
.tint-field--wide { grid-column: span 2; }
#navigation > :not(header) + :not(header) { margin-top: 1.5rem; }
.tint-alerts { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-bottom: 1.25rem; }
.content-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; align-items: start; }
.content-pair > .tint-table-wrap { grid-column: 1 / -1; }
.overlay-stage { display: grid; grid-template-columns: auto minmax(18rem, 1fr) auto; gap: 1rem; align-items: start; padding: 1.5rem; background: var(--surface-variant); border-radius: var(--radius, 0.6rem); }
.state-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; align-items: start; }

@media (max-width: 74rem) {
  .nav-inner { gap: 0.75rem; }
  .nav-links a { padding-inline: 0.5rem; }
  .landing-intro { grid-template-columns: 1fr; padding-top: 3rem; }
  .intro-copy { max-width: 46rem; }
  .preview-shell { min-height: 32rem; }
  .essential-colors { grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr)); }
  .data-grid { grid-template-columns: 1fr; }
  .component-header { grid-template-columns: 1fr; gap: 1.5rem; }
  .download-builder { grid-template-columns: 1fr; }
  .component-layout { grid-template-columns: 1fr; gap: 0; }
  .component-index { position: static; display: flex; gap: 1rem; overflow-x: auto; padding-top: 1.5rem; }
  .component-index a { flex: 0 0 auto; }
  .overlay-stage { grid-template-columns: 1fr 1fr; }
  .tint-toast { grid-column: span 2; }
}

@media (max-width: 48rem) {
  :root { --nav-height: 7.4rem; }
  .nav-inner { flex-wrap: wrap; gap: 0.5rem 0.8rem; padding: 0.6rem 1rem; align-content: center; }
  .brand { margin-right: 0; }
  .nav-links { order: 2; margin-left: auto; }
  .nav-tools { order: 3; }
  .nav-tools { width: 100%; margin-left: 0; }
  .color-control { flex: 1; }
  .color-control input[type="text"] { width: auto; flex: 1; }
  .secondary-toggle span { display: none; }
  .secondary-panel { top: calc(100% + 0.3rem); right: 1rem; left: 1rem; width: auto; }
  .page-shell, .how-inner { padding-left: 1rem; padding-right: 1rem; }
  .landing-intro { display: block; padding-top: 3rem; padding-bottom: 3rem; }
  .intro-copy { margin-bottom: 3rem; }
  .intro-copy h1 { font-size: clamp(2.65rem, 14vw, 4.2rem); }
  .intro-actions { align-items: flex-start; flex-direction: column; }
  .preview-shell { min-height: 36rem; grid-template-columns: 1fr; }
  .demo-sidebar { display: none; }
  .demo-main { padding: 1.15rem; }
  .demo-topbar { margin-bottom: 2.2rem; }
  .demo-grid { grid-template-columns: 1fr; }
  .demo-list article { grid-template-columns: 1fr auto; }
  .demo-list article span { display: none; }
  .section-heading { display: block; }
  .section-heading h2 { margin-bottom: 1rem; }
  .component-header { padding-top: 3rem; }
  .component-header h1 { font-size: clamp(2.7rem, 13vw, 4.2rem); }
  .component-index { flex-wrap: wrap; gap: 0.25rem 0.9rem; overflow: visible; }
  .specimen-section > header { display: block; }
  .specimen-section h2 { margin-bottom: 0.5rem; }
  .specimen-form, .tint-alerts, .content-pair, .overlay-stage, .state-grid { grid-template-columns: 1fr; }
  .content-pair > .tint-table-wrap { grid-column: auto; }
  .tint-field--wide, .tint-toast { grid-column: auto; }
  .essential-section { padding: 4.5rem 0; }
  .essential-colors { grid-template-columns: repeat(2, 1fr); }
  .essential-swatch .color-chip { height: 6.5rem; }
  .steps { grid-template-columns: 1fr; }
  .step, .step + .step { padding: 1.7rem 0; border-left: 0; border-bottom: 1px solid color-mix(in srgb, var(--background) 25%, transparent); }
  .step span { margin-bottom: 1.5rem; }
  .page-header { padding-top: 3rem; }
  .palette-toolbar { flex-wrap: wrap; }
  .palette-toolbar { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .toolbar-label { width: auto; grid-column: 1 / -1; }
  .palette-toolbar label { min-width: 0; }
  .palette-toolbar select { width: 100%; }
  .export-button { width: 100%; grid-column: 1 / -1; }
  .ramp-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); overflow: hidden; }
  .ramp-swatch { min-width: 0; min-height: 8.5rem; border-bottom: 1px solid rgba(255,255,255,0.28); }
  .data-section { padding: 3.5rem 0; }
  .data-grid { gap: 3rem; }
  .footer-inner { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}