/* =========================================================================
   Lattice — dark brutalist-editorial protocol system
   One file: tokens + reusable component classes.
   Link from HTML with: <link rel="stylesheet" href="../css/system.css">
   ========================================================================= */

@import url("https://fonts.googleapis.com/css2?family=Inter+Tight:wght@400;500;600;700;800&family=Instrument+Serif:ital@1&family=JetBrains+Mono:wght@400;500;600&display=swap");

/* -----------------------------------------------------------------------
   Tokens
   ----------------------------------------------------------------------- */
:root {
  /* Color — five tones of black, one bone, one signal, one alert. */
  --ink: #08090b;
  --ink-rgb: 8 9 11;
  --stratum: #111317;
  --stratum-raised: #15181d;
  --edge: #22262c;
  --edge-strong: #2f343b;
  --bone: #f2f1ec;
  --bone-dim: #c8c7c2;
  --mute: #7b7f86;
  --mute-soft: #5b5f66;
  --signal: #c6f94d;
  --signal-rgb: 198 249 77;
  --signal-hover: #d9ff6e;
  --signal-press: #aee036;
  --alert: #ff5a2e;

  /* Semantic colors */
  --background: var(--ink);
  --surface: var(--stratum);
  --surface-raised: var(--stratum-raised);
  --border: var(--edge);
  --border-strong: var(--edge-strong);
  --foreground: var(--bone);
  --foreground-dim: var(--bone-dim);
  --foreground-muted: var(--mute);
  --accent: var(--signal);
  --accent-on: var(--ink);
  --focus: var(--signal);

  /* Type families */
  --font-display: "Inter Tight", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-body: "Inter Tight", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-italic: "Instrument Serif", "Times New Roman", Times, serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;

  /* Type scale — display-led, then a compressed UI scale */
  --text-display-xl: clamp(4.5rem, 9vw, 9rem);   /* hero headline */
  --text-display-lg: clamp(3rem, 6vw, 5.5rem);   /* section headline */
  --text-display-md: clamp(2.25rem, 4vw, 3.5rem);
  --text-headline: 1.75rem;
  --text-title: 1.25rem;
  --text-body-lg: 1.125rem;
  --text-body: 1rem;
  --text-body-sm: 0.9375rem;
  --text-label: 0.78rem;
  --text-mono: 0.72rem;

  /* Tracking — display sits ruthlessly tight; mono opens up */
  --track-display: -0.04em;
  --track-headline: -0.025em;
  --track-body: -0.005em;
  --track-mono: 0.06em;

  /* Line-heights */
  --leading-display: 0.94;
  --leading-headline: 1.05;
  --leading-body: 1.55;
  --leading-mono: 1.3;

  /* Spacing — base 4 with editorial overshoots */
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;
  --space-11: 160px;

  /* Layout */
  --shell-max: 1440px;
  --shell-pad-x: clamp(20px, 4vw, 56px);
  --gutter: 24px;
  --section-y: clamp(80px, 10vw, 160px);

  /* Radius — almost zero everywhere. */
  --radius-0: 0px;
  --radius-1: 2px;     /* buttons only */
  --radius-pill: 999px; /* reserved; do not use casually */

  /* Borders — hairline structure */
  --border-hair: 1px solid var(--border);
  --border-hair-strong: 1px solid var(--border-strong);
  --border-bone: 1px solid var(--bone);
  --border-signal: 1px solid var(--signal);

  /* Elevation — depth comes from tone shifts, not shadow */
  --shadow-none: 0 0 0 transparent;
  --shadow-overlay: 0 24px 48px rgba(8, 9, 11, 0.6);
  --shadow-focus: 0 0 0 1px var(--signal), 0 0 24px rgba(198, 249, 77, 0.25);
  --shadow-focus-inset: inset 0 0 0 1px var(--signal);

  /* Motion — minimal. State-only. */
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
  --duration-snap: 120ms;
  --duration-base: 180ms;
}

/* -----------------------------------------------------------------------
   Base
   ----------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--background);
  color: var(--foreground);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  letter-spacing: var(--track-body);
  font-weight: 400;
  font-feature-settings: "ss01", "cv11";
}

::selection {
  background: var(--signal);
  color: var(--ink);
}

img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* -----------------------------------------------------------------------
   Typography
   ----------------------------------------------------------------------- */
.t-display-xl,
.t-display-lg,
.t-display-md {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: var(--track-display);
  line-height: var(--leading-display);
  color: var(--foreground);
  margin: 0;
  text-wrap: balance;
}
.t-display-xl { font-size: var(--text-display-xl); }
.t-display-lg { font-size: var(--text-display-lg); }
.t-display-md { font-size: var(--text-display-md); }

.t-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-headline);
  letter-spacing: var(--track-headline);
  line-height: var(--leading-headline);
  color: var(--foreground);
  margin: 0;
}

.t-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-title);
  letter-spacing: var(--track-headline);
  line-height: 1.2;
  color: var(--foreground);
  margin: 0;
}

.t-body-lg,
.t-body,
.t-body-sm {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--foreground-dim);
  margin: 0;
}
.t-body-lg { font-size: var(--text-body-lg); line-height: 1.5; }
.t-body { font-size: var(--text-body); line-height: var(--leading-body); }
.t-body-sm { font-size: var(--text-body-sm); line-height: 1.5; }

.t-muted {
  color: var(--foreground-muted);
}

.t-italic {
  font-family: var(--font-italic);
  font-style: italic;
  font-weight: 400;
  color: var(--signal);
  letter-spacing: -0.01em;
  /* Renders ~1.05x of the parent display size when used inline. */
  font-size: 1.05em;
  line-height: 0.95;
  padding-right: 0.04em;
}

.t-mono {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--text-mono);
  letter-spacing: var(--track-mono);
  line-height: var(--leading-mono);
  text-transform: uppercase;
  color: var(--foreground-muted);
}

.t-mono--bone { color: var(--foreground); }
.t-mono--signal { color: var(--signal); }

.t-label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-label);
  letter-spacing: 0.01em;
  color: var(--foreground-muted);
}

/* Pull quote — Instrument Serif italic, set bigger than body */
.t-pullquote {
  font-family: var(--font-italic);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  line-height: 1.15;
  color: var(--foreground);
  letter-spacing: -0.01em;
  margin: 0;
}
.t-pullquote em {
  color: var(--signal);
  font-style: italic;
}

/* -----------------------------------------------------------------------
   Layout primitives
   ----------------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding-left: var(--shell-pad-x);
  padding-right: var(--shell-pad-x);
}

.shell--bleed {
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.stack {
  display: flex;
  flex-direction: column;
}
.stack-1 { gap: var(--space-1); }
.stack-2 { gap: var(--space-2); }
.stack-3 { gap: var(--space-3); }
.stack-4 { gap: var(--space-4); }
.stack-5 { gap: var(--space-5); }
.stack-6 { gap: var(--space-6); }
.stack-7 { gap: var(--space-7); }
.stack-8 { gap: var(--space-8); }

.row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.row--between { justify-content: space-between; }
.row--start { justify-content: flex-start; }
.row--end { justify-content: flex-end; }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  row-gap: var(--gutter);
}

.divider-hair {
  height: 1px;
  background: var(--border);
  width: 100%;
}

/* Tick rule — used between sections instead of decorative bars */
.tick-rule {
  position: relative;
  height: 1px;
  background: var(--border);
}
.tick-rule::before,
.tick-rule::after {
  content: "";
  position: absolute;
  top: -3px;
  width: 1px;
  height: 7px;
  background: var(--border-strong);
}
.tick-rule::before { left: 0; }
.tick-rule::after { right: 0; }

/* -----------------------------------------------------------------------
   Hero — the signature element
   Full-bleed abstract wireframe band. Image is the system, not a backdrop.
   ----------------------------------------------------------------------- */
.hero {
  position: relative;
  display: block;
  background: var(--ink);
  isolation: isolate;
}

.hero__band {
  position: relative;
  width: 100%;
  height: clamp(420px, 58vh, 720px);
  overflow: hidden;
  background-color: var(--ink);
  background-position: center 35%;
  background-size: cover;
  background-repeat: no-repeat;
}

/* Bottom fade ties the image into the type block below without softening it */
.hero__band::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 35%;
  background: linear-gradient(to bottom, transparent 0%, var(--ink) 100%);
  pointer-events: none;
}

.hero__overlay-top {
  position: absolute;
  inset: 0 0 auto 0;
  height: 22%;
  background: linear-gradient(to bottom, rgba(8, 9, 11, 0.65) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

.hero__body {
  position: relative;
  z-index: 2;
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: var(--space-8);
}

.hero__headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-display-xl);
  line-height: var(--leading-display);
  letter-spacing: var(--track-display);
  color: var(--foreground);
  margin: 0;
  max-width: 18ch;
}

.hero__meta {
  font-family: var(--font-mono);
  font-size: var(--text-mono);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--foreground-muted);
  line-height: var(--leading-mono);
}
.hero__meta strong {
  color: var(--foreground);
  font-weight: 500;
}

/* -----------------------------------------------------------------------
   Navigation
   ----------------------------------------------------------------------- */
.nav {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding-left: var(--shell-pad-x);
  padding-right: var(--shell-pad-x);
  border-bottom: 1px solid rgba(242, 241, 236, 0.08);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--foreground);
}
.nav__brand .spark {
  width: 22px;
  height: 22px;
  color: var(--foreground);
}
.nav__wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.015em;
  color: var(--foreground);
}

.nav__links {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__link {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--foreground-muted);
  transition: color var(--duration-snap) var(--ease-out);
}
.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--foreground);
}
.nav__link--active {
  color: var(--foreground);
  position: relative;
}
.nav__link--active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -22px;
  height: 2px;
  background: var(--signal);
}

/* -----------------------------------------------------------------------
   Buttons
   ----------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-1);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: -0.005em;
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--duration-snap) var(--ease-out),
    border-color var(--duration-snap) var(--ease-out),
    color var(--duration-snap) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
  white-space: nowrap;
  -webkit-appearance: none;
  appearance: none;
}
.btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.btn .icon,
.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  stroke-width: 1.75;
}

/* Primary — solid lime on ink. Reserved for the single most important action. */
.btn-primary {
  background: var(--signal);
  color: var(--ink);
  border-color: var(--signal);
}
.btn-primary:hover {
  background: var(--signal-hover);
  border-color: var(--signal-hover);
}
.btn-primary:active {
  background: var(--signal-press);
  border-color: var(--signal-press);
}

/* Ghost — hairline border, bone label. Default secondary action. */
.btn-ghost {
  background: transparent;
  color: var(--foreground);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  border-color: var(--signal);
  color: var(--foreground);
}

/* Mono — uppercase JetBrains label, hairline border. For technical nav actions. */
.btn-mono {
  background: transparent;
  color: var(--foreground);
  border-color: var(--border-strong);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  height: 40px;
  padding: 0 18px;
}
.btn-mono:hover {
  border-color: var(--signal);
  color: var(--signal);
}

.btn-link {
  background: transparent;
  border: 0;
  padding: 0;
  height: auto;
  color: var(--foreground);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--foreground);
  border-radius: 0;
}
.btn-link:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.btn[disabled],
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
}

/* -----------------------------------------------------------------------
   Inputs / Form
   ----------------------------------------------------------------------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field__label {
  font-family: var(--font-mono);
  font-size: var(--text-mono);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--foreground-muted);
}

.input,
.textarea,
.select {
  width: 100%;
  background: var(--surface);
  color: var(--foreground);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-0);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.4;
  letter-spacing: -0.005em;
  transition: border-color var(--duration-snap) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
  -webkit-appearance: none;
  appearance: none;
}
.input::placeholder,
.textarea::placeholder {
  color: var(--mute-soft);
}
.input:focus,
.textarea:focus,
.select:focus {
  outline: none;
  border-color: var(--signal);
  box-shadow: var(--shadow-focus);
}

.textarea {
  min-height: 120px;
  resize: vertical;
}

/* Checkbox */
.check {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--foreground);
}
.check input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.check__box {
  width: 16px;
  height: 16px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color var(--duration-snap) var(--ease-out),
    background-color var(--duration-snap) var(--ease-out);
}
.check__box::after {
  content: "";
  width: 8px;
  height: 4px;
  border-left: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  transform: translateY(-1px) rotate(-45deg) scale(0);
  transition: transform var(--duration-snap) var(--ease-out);
}
.check input[type="checkbox"]:checked + .check__box {
  background: var(--signal);
  border-color: var(--signal);
}
.check input[type="checkbox"]:checked + .check__box::after {
  transform: translateY(-1px) rotate(-45deg) scale(1);
}
.check input[type="checkbox"]:focus-visible + .check__box {
  box-shadow: var(--shadow-focus);
}

/* Radio */
.radio {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--foreground);
}
.radio input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.radio__dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  position: relative;
  flex-shrink: 0;
}
.radio__dot::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--signal);
  border-radius: 50%;
  transform: scale(0);
  transition: transform var(--duration-snap) var(--ease-out);
}
.radio input[type="radio"]:checked + .radio__dot {
  border-color: var(--signal);
}
.radio input[type="radio"]:checked + .radio__dot::after {
  transform: scale(1);
}

/* Toggle */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--foreground);
}
.toggle input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.toggle__track {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  flex-shrink: 0;
  transition: background-color var(--duration-snap) var(--ease-out),
    border-color var(--duration-snap) var(--ease-out);
}
.toggle__track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background: var(--mute);
  transition: transform var(--duration-snap) var(--ease-out),
    background-color var(--duration-snap) var(--ease-out);
}
.toggle input[type="checkbox"]:checked + .toggle__track {
  background: var(--ink);
  border-color: var(--signal);
}
.toggle input[type="checkbox"]:checked + .toggle__track::after {
  transform: translateX(16px);
  background: var(--signal);
}

/* -----------------------------------------------------------------------
   Cards
   ----------------------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-0);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.card--raised {
  background: var(--surface-raised);
}
.card__label {
  font-family: var(--font-mono);
  font-size: var(--text-mono);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--foreground-muted);
}
.card__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2rem;
  letter-spacing: var(--track-headline);
  line-height: 1.05;
  color: var(--foreground);
}
.card__support {
  font-family: var(--font-body);
  color: var(--foreground-dim);
  font-size: 0.9375rem;
  line-height: 1.5;
}
.card__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.015em;
  color: var(--foreground);
  margin: 0;
}

/* Hover treatment for interactive cards only */
.card--link {
  cursor: pointer;
  transition: border-color var(--duration-snap) var(--ease-out),
    background-color var(--duration-snap) var(--ease-out);
}
.card--link:hover {
  border-color: var(--border-strong);
  background: var(--surface-raised);
}

/* -----------------------------------------------------------------------
   Tabs
   ----------------------------------------------------------------------- */
.tabs {
  display: flex;
  align-items: stretch;
  gap: 0;
  border-bottom: 1px solid var(--border);
}
.tab {
  position: relative;
  background: transparent;
  border: 0;
  padding: 14px 18px 14px 0;
  margin-right: var(--space-6);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: -0.005em;
  color: var(--foreground-muted);
  cursor: pointer;
  transition: color var(--duration-snap) var(--ease-out);
}
.tab:hover { color: var(--foreground); }
.tab[aria-selected="true"],
.tab--active {
  color: var(--foreground);
}
.tab[aria-selected="true"]::after,
.tab--active::after {
  content: "";
  position: absolute;
  left: 0;
  right: var(--space-6);
  bottom: -1px;
  height: 2px;
  background: var(--signal);
}

/* -----------------------------------------------------------------------
   Code block
   ----------------------------------------------------------------------- */
.code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 18px 20px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--foreground);
  overflow-x: auto;
  letter-spacing: 0;
  text-transform: none;
}
.code .c-comment { color: var(--signal); }
.code .c-key { color: var(--bone-dim); }
.code .c-string { color: var(--foreground); }
.code .c-mute { color: var(--foreground-muted); }

/* Inline code */
.kbd,
.inline-code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1px 6px;
  color: var(--foreground);
  letter-spacing: 0;
  text-transform: none;
}

/* -----------------------------------------------------------------------
   Status / indicators (earned-meaning only)
   ----------------------------------------------------------------------- */
.dot {
  width: 8px;
  height: 8px;
  display: inline-block;
  background: var(--mute);
  flex-shrink: 0;
  border-radius: 50%;
}
.dot--live {
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(198, 249, 77, 0.12);
}
.dot--alert { background: var(--alert); }

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-mono);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--foreground);
}

/* -----------------------------------------------------------------------
   Sparkle mark — the only ornament
   ----------------------------------------------------------------------- */
.spark {
  display: inline-block;
  width: 18px;
  height: 18px;
  color: var(--foreground);
  flex-shrink: 0;
}
.spark--signal { color: var(--signal); }
.spark--lg { width: 64px; height: 64px; }
.spark--xl { width: 220px; height: 220px; }

/* -----------------------------------------------------------------------
   Footer
   ----------------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  padding-top: var(--space-8);
  padding-bottom: var(--space-7);
}
.footer__columns {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--gutter);
}
.footer__title {
  font-family: var(--font-mono);
  font-size: var(--text-mono);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--foreground-muted);
  margin-bottom: var(--space-3);
}
.footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer__list a {
  color: var(--foreground);
  font-size: 0.9375rem;
}
.footer__list a:hover { color: var(--signal); }

/* -----------------------------------------------------------------------
   Section rhythm
   ----------------------------------------------------------------------- */
.section {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}
.section--tight {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}
.section__head {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-7);
  max-width: 64ch;
}

/* -----------------------------------------------------------------------
   Responsive
   ----------------------------------------------------------------------- */
@media (max-width: 960px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .footer__columns { grid-template-columns: 1fr 1fr; row-gap: var(--space-6); }
  .nav__links { display: none; }
}
@media (max-width: 640px) {
  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__columns { grid-template-columns: 1fr; }
  .hero__band { height: clamp(280px, 50vh, 420px); }
}

/* -----------------------------------------------------------------------
   Accessibility helpers
   ----------------------------------------------------------------------- */
.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;
}

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