/* ==========================================================================
   CrowID brand system — shared by the public site (/), the app (/app) and
   the console (/console). One source of tokens, type, components and motion.

   Palette: deep moss graphite, bone text, signal teal for structure.
   Semantic colour is separate: ok = verified, amber = changed or at risk
   (never red), coral = a person must act. Copper and steel are data series.
   Type: Archivo (display, variable width), Geist (UI), JetBrains Mono (data).
   Scale: rem-based; the root font-size grows at 2400/3800/5000px so every
   page renders at true 4K and 5K without layout changes.
   Themes: dark is the default. Add .on-light to any section (or <html
   data-theme="light"> in the app) to flip every token to the light set.
   ========================================================================== */

:root {
  --ground: #0B1311;
  --ground-2: #0F1916;
  --surface: #131D1A;
  --raised: #1A2622;
  --sunken: #08100D;
  --line: #22302B;
  --line-strong: #364842;
  --ink: #EEEBE2;
  --ink-2: #C9CFC9;
  --muted: #94A49D;
  --signal: #7CC7B2;
  --signal-strong: #9FDCCB;
  --on-signal: #07120F;
  --signal-tint: #16302A;
  --copper: #D9925C;
  --steel: #93AAD8;
  --bone: #CBC3AE;
  --ok: #5FC491;
  --ok-tint: #12301F;
  --amber: #E5AD4F;
  --amber-tint: #32260F;
  --coral: #FF5A43;
  --coral-ink: #FF8E7D;
  --coral-tint: #3A1611;
  --on-coral: #1E0603;
  --scrim: rgba(3, 7, 6, 0.64);
  --glass: color-mix(in srgb, var(--surface) 78%, transparent);
  --glow: color-mix(in srgb, var(--signal) 50%, transparent);
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-2: 0 0.75rem 2rem -0.75rem rgba(0, 0, 0, 0.55);
  --shadow-3: 0 1.5rem 4rem -1rem rgba(0, 0, 0, 0.6), 0 0.25rem 0.75rem rgba(0, 0, 0, 0.35);

  --font-ui: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Archivo", "Geist", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-md: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  --fs-2xl: clamp(1.625rem, 1.3rem + 1.1vw, 2.25rem);
  --fs-3xl: clamp(2.125rem, 1.6rem + 2vw, 3.25rem);
  --fs-4xl: clamp(2.625rem, 1.8rem + 3.4vw, 4.75rem);

  --s-1: 0.25rem; --s-2: 0.5rem; --s-3: 0.75rem; --s-4: 1rem; --s-5: 1.5rem;
  --s-6: 2rem; --s-7: 3rem; --s-8: 4rem; --s-9: 6rem; --s-10: 8rem;
  --r-1: 0.25rem; --r-2: 0.5rem; --r-3: 0.875rem; --r-pill: 999px;
  --container: 76rem;
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 160ms;
  color-scheme: dark;
}

.on-light, :root[data-theme="light"] {
  --ground: #F5F6F3;
  --ground-2: #EDF0EC;
  --surface: #FFFFFF;
  --raised: #F3F5F2;
  --sunken: #E6EBE7;
  --line: #D9E0DB;
  --line-strong: #B3C0B9;
  --ink: #0F1D18;
  --ink-2: #2B3A34;
  --muted: #56655E;
  --signal: #17594C;
  --signal-strong: #0F4339;
  --on-signal: #F3F6F4;
  --signal-tint: #DCEBE5;
  --copper: #9C5426;
  --steel: #36558F;
  --bone: #6F6449;
  --ok: #1C6A43;
  --ok-tint: #DAEEE2;
  --amber: #855600;
  --amber-tint: #F6EAD0;
  --coral: #E5432C;
  --coral-ink: #B02A16;
  --coral-tint: #FFE3DD;
  --on-coral: #FFFFFF;
  --scrim: rgba(12, 22, 19, 0.4);
  --glow: color-mix(in srgb, var(--signal) 35%, transparent);
  --shadow-1: 0 1px 2px rgba(15, 29, 24, 0.08);
  --shadow-2: 0 0.75rem 2rem -0.75rem rgba(15, 29, 24, 0.18);
  --shadow-3: 0 1.5rem 4rem -1rem rgba(15, 29, 24, 0.22), 0 0.25rem 0.75rem rgba(15, 29, 24, 0.08);
  color-scheme: light;
}
.on-light { background: var(--ground); color: var(--ink); }

/* ---------- 4K scaling ---------- */
html { font-size: 100%; }
@media (min-width: 2400px) { html { font-size: 125%; } }
@media (min-width: 3800px) { html { font-size: 175%; } }
@media (min-width: 5000px) { html { font-size: 225%; } }

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 1rem); }
body { margin: 0; background: var(--ground); color: var(--ink); font: 400 var(--fs-md)/1.6 var(--font-ui); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; min-height: 100vh; }
h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd { margin: 0; }
h1, h2, h3, h4 { color: var(--ink); text-wrap: balance; }
p { text-wrap: pretty; }
img, svg, video, canvas { display: block; max-width: 100%; }
a { color: var(--signal); text-decoration: none; }
a:hover { color: var(--signal-strong); }
button, input, select, textarea { font: inherit; color: inherit; }
code, kbd, samp, pre, .mono { font-family: var(--font-mono); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 2px; }
::selection { background: var(--signal-tint); color: var(--ink); }
* { scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: var(--s-4); top: -4rem; z-index: 200; background: var(--signal); color: var(--on-signal); padding: var(--s-2) var(--s-4); border-radius: var(--r-1); font-weight: 600; }
.skip-link:focus { top: var(--s-4); }
.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.ink-2 { color: var(--ink-2); }
[hidden] { display: none !important; }

/* ---------- type ---------- */
.eyebrow { display: inline-flex; align-items: center; gap: var(--s-2); font: 500 var(--fs-xs)/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--signal); }
.eyebrow::before { content: ""; width: 1.25rem; height: 1px; background: currentColor; }
.eyebrow.plain::before { display: none; }
.display-1 { font: 650 var(--fs-4xl)/1.02 var(--font-display); font-stretch: 84%; letter-spacing: -0.025em; }
.display-2 { font: 650 var(--fs-3xl)/1.06 var(--font-display); font-stretch: 86%; letter-spacing: -0.02em; }
.h2 { font: 600 var(--fs-2xl)/1.15 var(--font-display); font-stretch: 90%; letter-spacing: -0.012em; }
.h3 { font: 600 var(--fs-xl)/1.25 var(--font-ui); letter-spacing: -0.005em; }
.h4 { font: 600 var(--fs-lg)/1.35 var(--font-ui); }
.lead { font-size: var(--fs-lg); line-height: 1.6; color: var(--ink-2); max-width: 44rem; }
@media (min-width: 900px) { .lead { font-size: 1.1875rem; } }
.small { font-size: var(--fs-sm); }
.xs { font-size: var(--fs-xs); }
.text-gradient { background: linear-gradient(100deg, var(--ink) 20%, var(--signal) 60%, var(--steel) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.prose { max-width: 46rem; color: var(--ink-2); }
.prose h2 { font: 600 var(--fs-xl)/1.3 var(--font-display); margin: var(--s-7) 0 var(--s-3); color: var(--ink); }
.prose h3 { font: 600 var(--fs-lg)/1.35 var(--font-ui); margin: var(--s-5) 0 var(--s-2); color: var(--ink); }
.prose p, .prose ul, .prose ol { margin: 0 0 var(--s-4); }
.prose li { margin-bottom: var(--s-2); }
.prose a { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- layout ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--s-5); }
.container.wide { max-width: 88rem; }
.container.narrow { max-width: 52rem; }
@media (max-width: 560px) { .container { padding: 0 var(--s-4); } }
.section { position: relative; padding: var(--s-10) 0; }
.section.tight { padding: var(--s-8) 0; }
@media (max-width: 760px) { .section { padding: var(--s-8) 0; } .section.tight { padding: var(--s-7) 0; } }
.section.tint { background: var(--ground-2); }
.section.lined { border-top: 1px solid var(--line); }
.section-head { display: grid; gap: var(--s-4); max-width: 46rem; margin-bottom: var(--s-8); }
.section-head.center { margin-inline: auto; text-align: center; justify-items: center; }
.grid { display: grid; gap: var(--s-5); }
.grid-2 { display: grid; gap: var(--s-5); grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { display: grid; gap: var(--s-5); grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { display: grid; gap: var(--s-5); grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1080px) { .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 680px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); } }
.split { display: grid; gap: var(--s-8); grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); align-items: center; }
.split.reverse > :first-child { order: 2; }
@media (max-width: 960px) { .split { grid-template-columns: minmax(0, 1fr); gap: var(--s-6); } .split.reverse > :first-child { order: 0; } }
.stack { display: grid; gap: var(--s-4); align-content: start; }
.stack-sm { display: grid; gap: var(--s-2); align-content: start; }
.row { display: flex; gap: var(--s-3); align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.divider { height: 1px; background: var(--line); border: 0; margin: var(--s-6) 0; }

/* ---------- buttons ---------- */
.btn { --b-bg: var(--surface); --b-fg: var(--ink); --b-bd: var(--line-strong);
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  height: 2.75rem; padding: 0 var(--s-5); border: 1px solid var(--b-bd); border-radius: var(--r-pill);
  background: var(--b-bg); color: var(--b-fg); font: 550 var(--fs-sm)/1 var(--font-ui); letter-spacing: 0.005em;
  white-space: nowrap; cursor: pointer; text-decoration: none; overflow: hidden; isolation: isolate;
  transition: background var(--dur), border-color var(--dur), color var(--dur), box-shadow 0.3s var(--ease), transform 0.15s var(--ease); }
.btn:hover { --b-bg: var(--raised); --b-bd: var(--muted); color: var(--b-fg); }
.btn:active { transform: scale(0.975); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.5; pointer-events: none; }
.btn svg { width: 1rem; height: 1rem; flex: none; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.btn-primary { --b-bg: var(--signal); --b-fg: var(--on-signal); --b-bd: var(--signal); box-shadow: 0 0 0 0 var(--glow); }
.btn-primary:hover { --b-bg: var(--signal-strong); --b-bd: var(--signal-strong); --b-fg: var(--on-signal); box-shadow: 0 0.5rem 1.75rem -0.5rem var(--glow); }
.btn-primary::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%); transform: translateX(-120%); }
.btn-primary:hover::after { transform: translateX(120%); transition: transform 0.75s var(--ease); }
.btn-ghost { --b-bg: transparent; --b-bd: transparent; --b-fg: var(--ink-2); }
.btn-ghost:hover { --b-bg: var(--raised); --b-bd: transparent; }
.btn-danger { --b-bg: var(--coral); --b-fg: var(--on-coral); --b-bd: var(--coral); }
.btn-danger:hover { --b-bg: var(--coral-ink); --b-bd: var(--coral-ink); --b-fg: var(--on-coral); }
.btn-lg { height: 3.25rem; padding: 0 var(--s-6); font-size: var(--fs-md); }
.btn-sm { height: 2.125rem; padding: 0 var(--s-4); font-size: var(--fs-xs); }
.btn-block { width: 100%; }
.btn .spinner { width: 1rem; height: 1rem; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin 0.7s linear infinite; }
.link-arrow { display: inline-flex; align-items: center; gap: 0.375rem; font-weight: 550; color: var(--signal); }
.link-arrow::after { content: "→"; transition: transform 0.25s var(--ease); }
.link-arrow:hover::after { transform: translateX(4px); }

/* ---------- badges, tags ---------- */
.badge { display: inline-flex; align-items: center; gap: 0.375rem; height: 1.5rem; padding: 0 0.625rem; border-radius: var(--r-pill); border: 1px solid var(--line-strong); color: var(--muted); font: 500 var(--fs-xs)/1 var(--font-mono); letter-spacing: 0.02em; white-space: nowrap; }
.badge.dot::before { content: ""; width: 0.4375rem; height: 0.4375rem; border-radius: 50%; background: currentColor; }
.badge.signal { color: var(--signal); border-color: color-mix(in srgb, var(--signal) 55%, transparent); background: var(--signal-tint); }
.badge.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 55%, transparent); background: var(--ok-tint); }
.badge.warn { color: var(--amber); border-color: color-mix(in srgb, var(--amber) 55%, transparent); background: var(--amber-tint); }
.badge.fail { color: var(--coral-ink); border-color: color-mix(in srgb, var(--coral) 60%, transparent); background: var(--coral-tint); }
.badge.info { color: var(--steel); border-color: color-mix(in srgb, var(--steel) 55%, transparent); }
.badge.live::before { content: ""; width: 0.4375rem; height: 0.4375rem; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 0 var(--ok); animation: live 2s ease-out infinite; }
@keyframes live { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 60%, transparent); } 70%, 100% { box-shadow: 0 0 0 0.45rem transparent; } }

/* ---------- cards ---------- */
.card { position: relative; display: grid; gap: var(--s-3); align-content: start; padding: var(--s-6); border: 1px solid var(--line); border-radius: var(--r-3); background: var(--glass); -webkit-backdrop-filter: blur(14px) saturate(1.2); backdrop-filter: blur(14px) saturate(1.2); transition: border-color 0.3s, transform 0.35s var(--ease), box-shadow 0.35s var(--ease); min-width: 0; }
.on-light .card, :root[data-theme="light"] .card { background: var(--surface); box-shadow: var(--shadow-1); }
.card.interactive { cursor: pointer; }
.card.interactive:hover, a.card:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: var(--shadow-3); }
a.card { color: inherit; }
.card.pad-sm { padding: var(--s-5); }
.card .icon { width: 2.75rem; height: 2.75rem; display: grid; place-items: center; border-radius: var(--r-2); background: var(--signal-tint); color: var(--signal); border: 1px solid color-mix(in srgb, var(--signal) 30%, transparent); }
.card .icon svg { width: 1.375rem; height: 1.375rem; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.card p { color: var(--ink-2); }
/* cursor light around the edge */
.glow-edge::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; pointer-events: none; background: radial-gradient(22rem circle at var(--mx, -999px) var(--my, -999px), var(--glow), transparent 45%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0); opacity: 0; transition: opacity 0.35s; }
.glow-edge:hover::before { opacity: 1; }

.stat { display: grid; gap: var(--s-1); }
.stat .n { font: 650 var(--fs-3xl)/1 var(--font-display); font-stretch: 80%; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stat .l { color: var(--muted); font-size: var(--fs-sm); }

/* ---------- forms ---------- */
.field { display: grid; gap: var(--s-2); min-width: 0; }
.field > label, .label { font: 550 var(--fs-sm)/1.3 var(--font-ui); color: var(--ink); }
.field .hint { font-size: var(--fs-xs); color: var(--muted); }
.input, .select, .textarea { width: 100%; min-width: 0; height: 2.875rem; padding: 0 var(--s-4); border: 1px solid var(--line-strong); border-radius: var(--r-2); background: var(--sunken); color: var(--ink); font-size: var(--fs-md); transition: border-color var(--dur), box-shadow var(--dur); }
.on-light .input, .on-light .select, .on-light .textarea, :root[data-theme="light"] .input, :root[data-theme="light"] .select, :root[data-theme="light"] .textarea { background: var(--surface); }
.textarea { height: auto; min-height: 8rem; padding: var(--s-3) var(--s-4); line-height: 1.5; resize: vertical; }
.textarea.mono { font: 400 var(--fs-sm)/1.55 var(--font-mono); }
.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394A49D' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.875rem center; background-size: 1rem; padding-right: 2.5rem; }
.input:hover, .select:hover, .textarea:hover { border-color: var(--muted); }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--signal); box-shadow: 0 0 0 3px var(--signal-tint); }
.input[aria-invalid="true"], .select[aria-invalid="true"], .textarea[aria-invalid="true"] { border-color: var(--coral); }
.field .error { font-size: var(--fs-xs); color: var(--coral-ink); }
.check { display: inline-flex; gap: var(--s-2); align-items: flex-start; font-size: var(--fs-sm); color: var(--ink-2); cursor: pointer; }
.check input { width: 1.0625rem; height: 1.0625rem; margin: 0.15rem 0 0; accent-color: var(--signal); flex: none; }
.input-group { display: flex; gap: var(--s-2); padding: var(--s-2); border: 1px solid var(--line-strong); border-radius: var(--r-pill); background: var(--glass); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); box-shadow: var(--shadow-2); transition: border-color var(--dur), box-shadow var(--dur); }
.input-group:focus-within { border-color: var(--signal); box-shadow: 0 0 0 4px var(--signal-tint), var(--shadow-2); }
.input-group .input { border: 0; background: transparent; height: 2.75rem; box-shadow: none; }
@media (max-width: 520px) { .input-group { flex-direction: column; border-radius: var(--r-3); } .input-group .btn { width: 100%; } }
.alert { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: var(--s-3); align-items: start; padding: var(--s-3) var(--s-4); border: 1px solid var(--line-strong); border-radius: var(--r-2); background: var(--raised); font-size: var(--fs-sm); }
.alert::before { content: ""; width: 0.5rem; height: 0.5rem; margin-top: 0.45rem; border-radius: 50%; background: var(--steel); }
.alert.ok { border-color: color-mix(in srgb, var(--ok) 50%, transparent); background: var(--ok-tint); } .alert.ok::before { background: var(--ok); }
.alert.warn { border-color: color-mix(in srgb, var(--amber) 50%, transparent); background: var(--amber-tint); } .alert.warn::before { background: var(--amber); }
.alert.fail { border-color: color-mix(in srgb, var(--coral) 55%, transparent); background: var(--coral-tint); } .alert.fail::before { background: var(--coral); }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-3); background: var(--glass); }
.on-light .table-wrap, :root[data-theme="light"] .table-wrap { background: var(--surface); }
.table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.table th { text-align: left; padding: var(--s-3) var(--s-4); font: 550 var(--fs-xs)/1.2 var(--font-ui); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--line); white-space: nowrap; }
.table td { padding: var(--s-3) var(--s-4); border-bottom: 1px solid var(--line); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table tbody tr { transition: background var(--dur); }
.table tbody tr:hover { background: var(--raised); }
.table .r { text-align: right; }

/* ---------- code ---------- */
.code { margin: 0; padding: var(--s-4) var(--s-5); border: 1px solid var(--line); border-radius: var(--r-2); background: var(--sunken); color: var(--ink-2); font: 400 var(--fs-sm)/1.65 var(--font-mono); overflow-x: auto; white-space: pre; }
.code .k { color: var(--signal); } .code .s { color: var(--copper); } .code .c { color: var(--muted); }
kbd { font: 500 var(--fs-xs)/1 var(--font-mono); border: 1px solid var(--line-strong); border-bottom-width: 2px; border-radius: var(--r-1); padding: 2px 6px; color: var(--muted); }

/* ---------- accordion, tabs ---------- */
.accordion { border-top: 1px solid var(--line); }
.accordion details { border-bottom: 1px solid var(--line); }
.accordion summary { list-style: none; display: flex; justify-content: space-between; gap: var(--s-4); align-items: center; padding: var(--s-5) 0; cursor: pointer; font: 600 var(--fs-lg)/1.35 var(--font-ui); }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; font: 400 1.5rem/1 var(--font-ui); color: var(--muted); transition: transform 0.3s var(--ease); }
.accordion details[open] summary::after { transform: rotate(45deg); }
.accordion .body { padding: 0 0 var(--s-5); color: var(--ink-2); max-width: 46rem; }
.tabs { display: flex; gap: var(--s-1); border-bottom: 1px solid var(--line); overflow-x: auto; }
.tab { height: 2.75rem; padding: 0 var(--s-4); border: 0; border-bottom: 2px solid transparent; background: none; color: var(--muted); font-weight: 550; font-size: var(--fs-sm); cursor: pointer; margin-bottom: -1px; white-space: nowrap; transition: color var(--dur), border-color 0.3s var(--ease); }
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--signal); }

/* ---------- site header ---------- */
.site-header { position: sticky; top: 0; z-index: 100; height: var(--header-h); border-bottom: 1px solid transparent; transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s; }
.site-header.scrolled, .site-header.solid { background: color-mix(in srgb, var(--ground) 72%, transparent); -webkit-backdrop-filter: blur(20px) saturate(1.4); backdrop-filter: blur(20px) saturate(1.4); border-bottom-color: var(--line); }
.site-header .bar { height: 100%; display: flex; align-items: center; gap: var(--s-6); }
.logo { display: inline-flex; align-items: center; gap: 0.625rem; color: var(--ink); font: 700 1.25rem/1 var(--font-display); font-stretch: 82%; letter-spacing: 0.01em; }
.logo:hover { color: var(--ink); }
.logo svg { width: 1.75rem; height: 1.75rem; overflow: visible; }
.logo .mark-a { fill: var(--ink); }
.logo .mark-b { fill: var(--signal); transform-origin: 17.5px 10.75px; transition: transform 0.7s var(--ease); }
.logo:hover .mark-b { transform: rotate(360deg); }
.nav-main { display: flex; align-items: center; gap: var(--s-1); }
.nav-main > a, .nav-main > .has-menu > button { display: inline-flex; align-items: center; gap: 0.25rem; height: 2.5rem; padding: 0 var(--s-3); border: 0; border-radius: var(--r-pill); background: none; color: var(--ink-2); font-size: var(--fs-sm); font-weight: 500; cursor: pointer; transition: color var(--dur), background var(--dur); }
.nav-main > a:hover, .nav-main > .has-menu > button:hover, .nav-main > .has-menu.open > button { color: var(--ink); background: var(--raised); }
.nav-main > a[aria-current="page"] { color: var(--ink); }
.nav-main .chev { width: 0.75rem; height: 0.75rem; stroke: currentColor; fill: none; stroke-width: 2; transition: transform 0.25s var(--ease); }
.has-menu { position: relative; }
.has-menu.open .chev { transform: rotate(180deg); }
.mega { position: absolute; left: 50%; top: calc(100% + 0.625rem); width: min(42rem, 92vw); transform: translateX(-50%) translateY(-6px); opacity: 0; visibility: hidden; padding: var(--s-3); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-1); border: 1px solid var(--line-strong); border-radius: var(--r-3); background: color-mix(in srgb, var(--surface) 94%, transparent); -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px); box-shadow: var(--shadow-3); transition: opacity 0.2s var(--ease), transform 0.25s var(--ease), visibility 0.2s; }
.has-menu.open .mega { opacity: 1; visibility: visible; transform: translateX(-50%); }
.mega a { display: grid; grid-template-columns: 2.25rem minmax(0, 1fr); gap: var(--s-3); padding: var(--s-3); border-radius: var(--r-2); color: var(--ink); }
.mega a:hover { background: var(--raised); color: var(--ink); }
.mega a .mi { width: 2.25rem; height: 2.25rem; display: grid; place-items: center; border-radius: var(--r-2); background: var(--signal-tint); color: var(--signal); }
.mega a .mi svg { width: 1.125rem; height: 1.125rem; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.mega a b { display: block; font-size: var(--fs-sm); font-weight: 600; }
.mega a span { display: block; font-size: var(--fs-xs); color: var(--muted); line-height: 1.45; margin-top: 2px; }
.mega .mega-foot { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; gap: var(--s-3); margin-top: var(--s-2); padding: var(--s-3) var(--s-3) var(--s-1); border-top: 1px solid var(--line); font-size: var(--fs-xs); color: var(--muted); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: var(--s-2); }
.menu-toggle { display: none; width: 2.5rem; height: 2.5rem; border: 1px solid var(--line-strong); border-radius: var(--r-pill); background: transparent; color: var(--ink); cursor: pointer; place-items: center; }
.menu-toggle svg { width: 1.125rem; height: 1.125rem; stroke: currentColor; fill: none; stroke-width: 1.8; }
@media (max-width: 1020px) {
  .nav-main, .header-actions .hide-sm { display: none; }
  .menu-toggle { display: inline-grid; }
}
.mobile-nav { position: fixed; inset: var(--header-h) 0 0; z-index: 99; overflow-y: auto; padding: var(--s-5) var(--s-5) var(--s-8); background: var(--ground); display: grid; gap: var(--s-1); align-content: start; transform: translateY(-0.5rem); opacity: 0; visibility: hidden; transition: opacity 0.25s var(--ease), transform 0.3s var(--ease), visibility 0.25s; }
.mobile-nav.open { opacity: 1; visibility: visible; transform: none; }
.mobile-nav .group-label { margin: var(--s-4) 0 var(--s-1); }
.mobile-nav a { display: flex; justify-content: space-between; padding: var(--s-3) 0; border-bottom: 1px solid var(--line); color: var(--ink); font-size: var(--fs-lg); font-weight: 500; }
.mobile-nav .actions { display: grid; gap: var(--s-2); margin-top: var(--s-5); }
body.nav-open { overflow: hidden; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: var(--s-9) 0 var(--s-6); background: var(--ground); font-size: var(--fs-sm); position: relative; z-index: 1; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) repeat(4, minmax(0, 1fr)); gap: var(--s-6); }
@media (max-width: 960px) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .footer-grid > :first-child { grid-column: 1 / -1; } }
.footer-grid h4 { font: 500 var(--fs-xs)/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: var(--s-4); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s-3); }
.footer-grid a { color: var(--ink-2); }
.footer-grid a:hover { color: var(--ink); }
.footer-base { margin-top: var(--s-8); padding-top: var(--s-5); border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: var(--s-4); justify-content: space-between; color: var(--muted); font-size: var(--fs-xs); }
.footer-base nav { display: flex; gap: var(--s-5); flex-wrap: wrap; }
.footer-base a { color: var(--muted); }
.footer-base a:hover { color: var(--ink); }

/* ---------- hero + graphics ---------- */
.hero { position: relative; overflow: hidden; padding: calc(var(--s-9) + var(--s-4)) 0 var(--s-9); isolation: isolate; }
@media (max-width: 760px) { .hero { padding: var(--s-8) 0 var(--s-8); } }
.hero .mesh { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -2; background: radial-gradient(60rem 36rem at 15% -10%, color-mix(in srgb, var(--signal) 16%, transparent), transparent 70%), radial-gradient(48rem 30rem at 100% 20%, color-mix(in srgb, var(--steel) 10%, transparent), transparent 70%); }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 10rem; z-index: -1; background: linear-gradient(transparent, var(--ground)); pointer-events: none; }
.grid-bg { background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 4rem 4rem; mask-image: radial-gradient(ellipse at center, #000 20%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse at center, #000 20%, transparent 75%); }
.frame { position: relative; border: 1px solid var(--line-strong); border-radius: var(--r-3); background: var(--surface); box-shadow: var(--shadow-3), 0 0 0 1px color-mix(in srgb, var(--signal) 8%, transparent); overflow: hidden; }
.frame .chrome { display: flex; align-items: center; gap: var(--s-2); height: 2.25rem; padding: 0 var(--s-3); border-bottom: 1px solid var(--line); background: var(--raised); }
.frame .chrome i { width: 0.625rem; height: 0.625rem; border-radius: 50%; background: var(--line-strong); }
.frame .chrome span { margin-left: var(--s-2); font: 400 var(--fs-xs)/1 var(--font-mono); color: var(--muted); }
.cta-band { position: relative; overflow: hidden; border: 1px solid var(--line-strong); border-radius: calc(var(--r-3) * 1.5); padding: var(--s-9) var(--s-7); background: radial-gradient(40rem 20rem at 85% 0%, color-mix(in srgb, var(--signal) 20%, transparent), transparent 70%), var(--surface); text-align: center; display: grid; justify-items: center; gap: var(--s-5); }
@media (max-width: 680px) { .cta-band { padding: var(--s-8) var(--s-5); } }

/* ---------- toast ---------- */
.toast-host { position: fixed; z-index: 300; left: 50%; bottom: calc(var(--s-5) + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); display: grid; gap: var(--s-2); justify-items: center; pointer-events: none; }
.toast { pointer-events: auto; padding: var(--s-3) var(--s-5); border-radius: var(--r-pill); background: var(--ink); color: var(--ground); font-size: var(--fs-sm); font-weight: 500; box-shadow: var(--shadow-3); animation: toast-in 0.35s var(--ease) both; max-width: calc(100vw - 2rem); }
.toast.fail { background: var(--coral); color: var(--on-coral); }
@keyframes toast-in { from { opacity: 0; transform: translateY(0.75rem); } }

/* ---------- motion ---------- */
.reveal { opacity: 0; transform: translateY(1.25rem); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); transition-delay: calc(var(--d, 0) * 80ms); }
.reveal.in { opacity: 1; transform: none; }
.skeleton { position: relative; overflow: hidden; background: var(--raised); border-radius: var(--r-1); }
.skeleton::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--ink) 7%, transparent), transparent); transform: translateX(-100%); animation: shimmer 1.4s infinite; }
@keyframes shimmer { to { transform: translateX(100%); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes rise { from { opacity: 0; transform: translateY(1rem); } }
.rise { animation: rise 0.8s var(--ease) both; animation-delay: calc(var(--d, 0) * 90ms); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}
@media print {
  .site-header, .site-footer, .mobile-nav, .toast-host, .hero .mesh, .no-print { display: none !important; }
  body { background: #fff; color: #000; }
}
/* toasts keep a readable width on phones (site builder) */
.toast-host { width: min(32rem, calc(100vw - 2rem)); }
.toast { text-align: center; }
@media (max-width: 560px) { .toast { border-radius: var(--r-3); } }

/* table wrappers anchor their own absolutely-positioned helpers (sr-only labels) */
.table-wrap { position: relative; }
.spinner { display: inline-block; width: 1rem; height: 1rem; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin 0.7s linear infinite; }