/* ============================================================================
   APERTURE — showcase for Claude Opus 4.8 + Claude Code
   Three files, no build, file:// safe. One accent (terracotta) = "focus light".
   ========================================================================== */

/* ------------------------------------------------------------------ Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-x: hidden;
}
body {
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, canvas, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
:where(h1, h2, h3, h4, p, dl, dd, dt) { overflow-wrap: break-word; }

/* --------------------------------------------------------- Layout tokens */
:root {
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", "Menlo", "Consolas", monospace;

  /* Fluid type scale */
  --text-2xs: clamp(0.66rem, 0.63rem + 0.12vw, 0.72rem);
  --text-xs:  clamp(0.75rem, 0.72rem + 0.15vw, 0.84rem);
  --text-sm:  clamp(0.86rem, 0.82rem + 0.2vw, 0.95rem);
  --text-base:clamp(1.0rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg:  clamp(1.2rem, 1.08rem + 0.5vw, 1.5rem);
  --text-xl:  clamp(1.6rem, 1.35rem + 1.1vw, 2.25rem);
  --text-2xl: clamp(2.1rem, 1.6rem + 2.2vw, 3.25rem);
  --text-3xl: clamp(2.6rem, 1.8rem + 3.6vw, 4.9rem);
  --text-display: clamp(3rem, 1.6rem + 6vw, 7rem);

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.5rem; --space-6: 2rem; --space-7: 3rem; --space-8: 4rem;
  --space-9: 6rem; --space-10: 8rem;
  --gutter: clamp(1.25rem, 4vw, 4rem);
  --measure: 62ch;
  --section-pad-y: clamp(5rem, 11vh, 11rem);
  --maxw: 1280px;
  --grid-gap: clamp(1rem, 2vw, 2rem);
  --header-h: 64px;

  /* Radii */
  --radius-0: 0px; --radius-sm: 2px; --radius-md: 6px; --radius-lg: 12px; --radius-pill: 999px;

  /* Motion */
  --ease-focus:  cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.30, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-instant: 120ms; --dur-fast: 200ms; --dur-base: 400ms;
  --dur-slow: 600ms; --dur-cine: 900ms; --dur-epic: 1400ms;
  --cursor-blink: 1.06s;
}

/* ------------------------------------------------------------ Dark tokens */
:root, [data-theme="dark"] {
  color-scheme: dark;
  --bg: #0B0A09; --bg-elevated: #100E0B; --surface: #16130F; --surface-2: #1E1A14; --surface-3: #26211A;
  --hairline: rgba(244,241,234,0.08); --border: rgba(244,241,234,0.12); --border-strong: rgba(244,241,234,0.20);
  --fg: #F4F1EA; --fg-muted: #9B958A; --fg-dim: #6E6A61; --fg-faint: #46433D;
  --accent: #D97757; --accent-hover: #E58C6E; --accent-press: #C05F3F; --accent-glow: #E8A183;
  /* accent tuned for small/normal-size text so it clears 4.5:1 (dark: same as --accent, ~6.3:1) */
  --accent-text: #D97757;
  --accent-contrast: #1A130E; --accent-tint: rgba(217,119,87,0.12); --accent-tint-strong: rgba(217,119,87,0.22);
  --syntax-add: #7FB998; --syntax-add-bg: rgba(127,185,152,0.12); --syntax-add-text: #7FB998;
  --syntax-del: #C77B6B; --syntax-del-bg: rgba(199,123,107,0.12);
  --syntax-keyword: #D97757; --syntax-string: #C9A876; --syntax-fn: #C9A876;
  --syntax-comment: #6E6A61; --syntax-punc: #9B958A; --syntax-attr: #7FB998;
  --term-human: #E0A96D; --term-claude: #7FB998;
  --status-ok: #7FB998; --status-active: #D97757; --status-idle: #6E6A61;
  --selection-bg: rgba(217,119,87,0.28); --selection-fg: #F4F1EA;
  --grain-opacity: 0.05; --field-point: rgba(244,241,234,0.55); --field-point-focus: #D97757;
  --shadow-md: 0 12px 40px rgba(0,0,0,0.5); --shadow-lg: 0 28px 90px rgba(0,0,0,0.6);
  --glow-accent: 0 0 0 1px var(--accent-tint-strong), 0 0 44px rgba(217,119,87,0.28);
  --glow-focus: 0 0 28px rgba(232,161,131,0.55);
}

/* ----------------------------------------------------------- Light tokens */
[data-theme="light"] {
  color-scheme: light;
  --bg: #F4F1EA; --bg-elevated: #EFEBE1; --surface: #E9E3D6; --surface-2: #E1DACB; --surface-3: #D8D0BE;
  --hairline: rgba(26,24,21,0.07); --border: rgba(26,24,21,0.12); --border-strong: rgba(26,24,21,0.22);
  --fg: #1A1815; --fg-muted: #57534A; --fg-dim: #857F73; --fg-faint: #A8A296;
  --accent: #C15F3C; --accent-hover: #A94E2E; --accent-press: #8F4023; --accent-glow: #D97757;
  /* the bright --accent is only ~3.75:1 on the cream bg; use this darker tone for small text (~4.9:1) */
  --accent-text: #A94E2E;
  --accent-contrast: #F7F4EE; --accent-tint: rgba(193,95,60,0.10); --accent-tint-strong: rgba(193,95,60,0.18);
  --syntax-add: #3E8E5F; --syntax-add-bg: rgba(62,142,95,0.12); --syntax-add-text: #2C7A4C;
  --syntax-del: #B04A34; --syntax-del-bg: rgba(176,74,52,0.10);
  --syntax-keyword: #C15F3C; --syntax-string: #9A6B2F; --syntax-fn: #9A6B2F;
  --syntax-comment: #857F73; --syntax-punc: #57534A; --syntax-attr: #3E8E5F;
  --term-human: #B0722A; --term-claude: #3E8E5F;
  --status-ok: #3E8E5F; --status-active: #C15F3C; --status-idle: #A8A296;
  --selection-bg: rgba(193,95,60,0.22); --selection-fg: #1A1815;
  --grain-opacity: 0.03; --field-point: rgba(26,24,21,0.45); --field-point-focus: #C15F3C;
  --shadow-md: 0 12px 40px rgba(60,42,28,0.12); --shadow-lg: 0 28px 90px rgba(60,42,28,0.16);
  --glow-accent: 0 0 0 1px var(--accent-tint-strong), 0 0 40px rgba(193,95,60,0.22);
  --glow-focus: 0 0 24px rgba(193,95,60,0.35);
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  transition: background var(--dur-slow) var(--ease-focus), color var(--dur-slow) var(--ease-focus);
}
::selection { background: var(--selection-bg); color: var(--selection-fg); }

/* ------------------------------------------------------------- Utilities */
.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;
}
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.container--narrow { max-width: 920px; }
.section { padding-block: var(--section-pad-y); position: relative; }
:where(section, [id])[id] { scroll-margin-top: calc(var(--header-h) + 16px); }

.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 10000;
  transform: translateY(-160%);
  background: var(--accent); color: var(--accent-contrast);
  padding: 0.6rem 1rem; font-family: var(--font-mono); font-size: var(--text-xs);
  letter-spacing: 0.08em; border-radius: var(--radius-sm);
  transition: transform var(--dur-fast) var(--ease-focus);
}
.skip-link:focus { transform: translateY(0); }

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
  border-radius: var(--radius-sm);
}
/* The skip link moves programmatic focus to <main id="main" tabindex="-1">; that focus
   should shift the tab origin without painting a persistent ring on the container. */
#main { outline: none; }
#main:focus, #main:focus-visible { outline: none; box-shadow: none; }

/* Film grain overlay. Plain (normal-blend) low-opacity texture: a fixed grain with a
   non-normal blend mode over a live canvas must re-blend every frame, so we avoid it. */
.grain {
  position: fixed; inset: 0; z-index: 9998; pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 140px 140px;
}

/* ------------------------------------------------------------ Typography */
.kicker {
  font-family: var(--font-mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.18em; color: var(--fg-muted);
  display: inline-flex; align-items: center; gap: 0.6em;
}
.kicker-tick { width: 22px; height: 1px; background: var(--accent); display: inline-block; }
.section-head { max-width: var(--measure); margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.section-title {
  font-family: var(--font-display); font-weight: 400; font-size: var(--text-2xl);
  line-height: 1.02; letter-spacing: -0.025em; margin-top: var(--space-4);
  font-optical-sizing: auto;
}
.section-subhead {
  font-family: var(--font-display); font-weight: 340; font-style: italic;
  font-size: var(--text-lg); color: var(--fg-muted); margin-top: var(--space-4);
  letter-spacing: -0.01em;
}
.section-lead {
  font-size: var(--text-lg); color: var(--fg-muted); max-width: var(--measure);
  margin-top: var(--space-5); line-height: 1.55;
}

/* -------------------------------------------------------------- Reveals */
.js .reveal {
  opacity: 0; transform: translateY(20px); filter: blur(9px);
  transition: opacity var(--dur-slow) var(--ease-focus),
              transform var(--dur-slow) var(--ease-focus),
              filter var(--dur-slow) var(--ease-focus);
}
.js .reveal.is-visible { opacity: 1; transform: none; filter: blur(0); }
.reveal-all .reveal { opacity: 1 !important; transform: none !important; filter: none !important; }

/* ============================================================== HEADER */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  backdrop-filter: blur(10px) saturate(1.1); -webkit-backdrop-filter: blur(10px) saturate(1.1);
  background: color-mix(in srgb, var(--bg) 68%, transparent);
  border-bottom: 1px solid var(--hairline);
  transition: background var(--dur-base) var(--ease-focus), border-color var(--dur-base) var(--ease-focus);
}
.header-inner {
  max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter);
  height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
}
.brand { display: inline-flex; align-items: center; gap: 0.65rem; min-width: 0; }
.brand-text {
  font-family: var(--font-mono); font-weight: 700; font-size: var(--text-sm);
  letter-spacing: 0.32em; padding-left: 0.06em;
}
.brand-mark { position: relative; width: 20px; height: 20px; display: inline-grid; place-items: center; flex: none; }
.brand-mark--sm { width: 18px; height: 18px; }
.brand-ring {
  position: absolute; inset: 0; border: 1.5px solid var(--accent); border-radius: 50%;
  opacity: 0.85;
}
.brand-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); box-shadow: var(--glow-focus); }

.site-nav ul { display: flex; gap: clamp(1rem, 2.4vw, 2.4rem); }
.site-nav a {
  font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.05em;
  color: var(--fg-muted); display: inline-flex; align-items: baseline; gap: 0.45em;
  padding-block: 0.4rem; position: relative; transition: color var(--dur-fast) var(--ease-focus);
}
.site-nav a .nav-idx { color: var(--fg-faint); font-size: 0.82em; }
.site-nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
  background: var(--accent); transition: right var(--dur-base) var(--ease-focus);
}
.site-nav a:hover, .site-nav a:focus-visible { color: var(--fg); }
.site-nav a:hover::after, .site-nav a[aria-current="true"]::after { right: 0; }
.site-nav a[aria-current="true"] { color: var(--fg); }

.header-actions { display: flex; align-items: center; gap: var(--space-4); flex: none; }

/* Mobile sections menu trigger — hidden on desktop, revealed (only with JS) below 760px. */
.nav-toggle {
  display: none; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  width: 40px; height: 40px; flex: none; border: 1px solid var(--border); border-radius: var(--radius-sm);
  transition: border-color var(--dur-fast) var(--ease-focus);
}
.nav-toggle:hover, .nav-toggle:focus-visible { border-color: var(--accent); }
.nav-toggle-bar { display: block; width: 18px; height: 1.5px; background: var(--fg); border-radius: 2px; transition: transform var(--dur-fast) var(--ease-focus), opacity var(--dur-fast); }
.site-header[data-nav-open="true"] .nav-toggle-bar:first-child { transform: translateY(3.25px) rotate(45deg); }
.site-header[data-nav-open="true"] .nav-toggle-bar:last-child { transform: translateY(-3.25px) rotate(-45deg); }

.theme-toggle { display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.3rem; border-radius: var(--radius-pill); }
.toggle-track {
  position: relative; width: 52px; height: 26px; border-radius: var(--radius-pill);
  background: var(--surface-2); border: 1px solid var(--border);
  display: inline-flex; align-items: center; justify-content: space-between; padding: 0 6px;
  transition: background var(--dur-base) var(--ease-focus);
}
.toggle-icon { font-size: 11px; line-height: 1; z-index: 1; color: var(--fg-dim); transition: color var(--dur-base); }
.toggle-icon--day { color: var(--fg-faint); }
.toggle-thumb {
  position: absolute; top: 50%; left: 3px; width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent); box-shadow: var(--glow-focus);
  transform: translateY(-50%); transition: transform var(--dur-base) var(--ease-focus);
}
[data-theme="light"] .toggle-thumb { transform: translate(26px, -50%); }
[data-theme="light"] .toggle-icon--day { color: var(--accent); }
[data-theme="light"] .toggle-icon--night { color: var(--fg-faint); }
.toggle-label {
  font-family: var(--font-mono); font-size: var(--text-2xs); letter-spacing: 0.16em;
  color: var(--fg-muted); width: 3.4em; text-align: left;
}

.header-progress { height: 1px; background: var(--hairline); width: 100%; }
.header-progress-bar { display: block; height: 100%; width: 0%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }

/* ================================================================ HERO */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center; overflow: hidden;
  padding-block: calc(var(--header-h) + 3rem) 4rem;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero-vignette {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 40%, transparent 40%, color-mix(in srgb, var(--bg) 72%, transparent) 100%),
    radial-gradient(60% 50% at 50% 55%, var(--accent-tint) 0%, transparent 60%);
}
.hero-content { position: relative; z-index: 2; text-align: center; }
/* Legibility pool: a soft, feathered radial scrim of the page ground quiets the point
   field under the text column so small/dim copy reads clearly, with no visible edge. */
.hero-content::before {
  content: ""; position: absolute; z-index: -1; pointer-events: none;
  left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(112%, 60rem); height: 150%;
  background: radial-gradient(58% 54% at 50% 50%,
    color-mix(in srgb, var(--bg) 62%, transparent) 0%,
    color-mix(in srgb, var(--bg) 42%, transparent) 42%,
    transparent 76%);
}
/* Per-line halos still lift each line off any points that show through the scrim. */
.hero-kicker, .hero-hints .hint { text-shadow: 0 0 14px var(--bg), 0 0 26px var(--bg); }
.hero-tagline { text-shadow: 0 0 20px var(--bg), 0 1px 34px var(--bg); }
.hero-lead { text-shadow: 0 0 12px var(--bg), 0 0 22px var(--bg), 0 0 34px var(--bg); }
.hero-kicker { justify-content: center; margin-bottom: var(--space-6); }
.hero-title {
  font-family: var(--font-mono); font-weight: 700; line-height: 0.98;
  font-size: clamp(2.4rem, 1rem + 8.5vw, 8.5rem);
  letter-spacing: clamp(0.08em, 0.02em + 1vw, 0.34em);
  padding-left: clamp(0.08em, 0.02em + 1vw, 0.34em); /* balance the trailing tracking */
  text-transform: uppercase;
  background: linear-gradient(180deg, var(--fg) 0%, color-mix(in srgb, var(--fg) 70%, var(--accent)) 130%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-block: 0.1em 0.24em;
}
.hero-tagline {
  font-family: var(--font-display); font-weight: 380; font-style: italic;
  font-size: var(--text-xl); letter-spacing: -0.015em; line-height: 1.15;
  max-width: 22ch; margin-inline: auto; text-wrap: balance;
}
.hero-tagline .rewrite-old { color: var(--syntax-del); text-decoration: line-through; text-decoration-color: var(--syntax-del); }
.hero-lead {
  font-size: var(--text-base); color: var(--fg-muted); max-width: 46ch;
  margin: var(--space-5) auto 0; line-height: 1.6;
}
/* Light theme peppers dark points over cream text; lift the lead to full ink for legibility. */
[data-theme="light"] .hero-lead { color: var(--fg); }
.hero-hints {
  display: flex; flex-wrap: wrap; gap: var(--space-4) var(--space-6);
  align-items: center; justify-content: center; margin-top: var(--space-7);
}
.hint { font-family: var(--font-body); font-size: var(--text-sm); color: var(--fg-muted); }
.hint--mono { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.04em; }
.hint-btn {
  font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--border-strong); border-radius: var(--radius-pill);
  padding: 0.6rem 1.1rem; display: inline-flex; align-items: center; gap: 0.5em;
  transition: border-color var(--dur-fast), background var(--dur-fast), color var(--dur-fast), box-shadow var(--dur-fast);
}
.hint-btn:hover, .hint-btn:focus-visible { border-color: var(--accent); background: var(--accent-tint); box-shadow: var(--glow-accent); }
.hint-btn-glyph { font-size: 1.05em; }

.hero-scroll {
  position: absolute; left: 50%; bottom: 1.6rem; transform: translateX(-50%); z-index: 2;
  display: inline-flex; flex-direction: column; align-items: center; gap: 0.6rem;
  font-family: var(--font-mono); font-size: var(--text-2xs); letter-spacing: 0.28em;
  text-transform: uppercase; color: var(--fg-dim);
}
.hero-scroll-line { width: 1px; height: 42px; background: linear-gradient(var(--fg-dim), transparent); overflow: hidden; position: relative; }
.hero-scroll-line::after { content: ""; position: absolute; inset: 0; background: var(--accent); animation: scrollPulse 2.4s var(--ease-in-out) infinite; }
@keyframes scrollPulse { 0% { transform: translateY(-100%); } 60%, 100% { transform: translateY(100%); } }

/* =========================================================== STATEMENT */
.statement { padding-block: clamp(6rem, 16vh, 15rem); }
.statement-heading {
  font-family: var(--font-display); font-weight: 380; font-size: var(--text-3xl);
  line-height: 1.06; letter-spacing: -0.028em; text-wrap: balance; margin-top: var(--space-5);
  font-optical-sizing: auto;
}
.statement-heading::first-letter { color: var(--accent); }
.statement .hairline { margin-block: clamp(2.5rem, 6vw, 4.5rem); }
.statement-body {
  font-family: var(--font-mono); font-size: var(--text-sm); letter-spacing: 0.02em;
  color: var(--fg-muted); max-width: 52ch;
}

.hairline { border: none; height: 1px; background: var(--border); width: 100%; }
.js .hairline--draw { transform: scaleX(0); transform-origin: left center; transition: transform var(--dur-epic) var(--ease-focus); }
.js .hairline--draw.is-visible { transform: scaleX(1); }
.reveal-all .hairline--draw { transform: scaleX(1) !important; }

/* ============================================================ TANGIBLE */
.tangible-grid { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.tangible-figure { display: flex; flex-direction: column; position: sticky; top: calc(var(--header-h) + 3rem); }
.figure-number {
  font-family: var(--font-mono); font-weight: 500; font-variant-numeric: tabular-nums;
  font-size: clamp(2.6rem, 1rem + 9vw, 7.5rem); line-height: 0.9; letter-spacing: -0.03em;
  color: var(--fg);
}
.figure-unit { font-family: var(--font-mono); font-size: var(--text-lg); color: var(--accent); letter-spacing: 0.04em; margin-top: 0.3rem; }
.figure-caption { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--fg-muted); margin-top: var(--space-4); }

.tangible-bars { display: flex; flex-direction: column; gap: clamp(2rem, 4vw, 3.2rem); }
.bar-row { display: flex; flex-direction: column; gap: 0.8rem; }
.bar-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.bar-label { font-family: var(--font-display); font-size: var(--text-lg); letter-spacing: -0.01em; }
.bar-meta { font-family: var(--font-mono); font-size: var(--text-2xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--fg-dim); }
.bar-track { height: 3px; background: var(--surface-2); border-radius: var(--radius-pill); overflow: hidden; position: relative; }
.bar-fill {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-glow));
  border-radius: var(--radius-pill); box-shadow: 0 0 12px var(--accent-tint-strong);
}
.js .bar-fill { transition: width var(--dur-epic) var(--ease-focus); }
.bar-desc { font-size: var(--text-sm); color: var(--fg-muted); max-width: 52ch; }

/* ============================================================ TERMINAL */
.terminal-wrap { max-width: 1000px; }
.terminal {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-0); overflow: hidden; box-shadow: var(--shadow-lg);
  font-family: var(--font-mono);
}
.terminal-bar {
  display: flex; align-items: center; gap: 0.8rem; padding: 0.7rem 1rem;
  background: var(--surface); border-bottom: 1px solid var(--hairline);
}
.terminal-dots { display: inline-flex; gap: 6px; }
.terminal-dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--surface-3); display: block; }
.terminal-dots i:first-child { background: color-mix(in srgb, var(--accent) 70%, var(--surface-3)); }
.terminal-title { font-size: var(--text-xs); color: var(--fg-muted); letter-spacing: 0.06em; flex: 1; min-width: 0; }
.terminal-replay {
  font-family: var(--font-mono); font-size: var(--text-2xs); letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fg-muted); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 0.3rem 0.6rem;
  display: inline-flex; align-items: center; gap: 0.4em; transition: color var(--dur-fast), border-color var(--dur-fast);
}
.terminal-replay:hover, .terminal-replay:focus-visible { color: var(--accent); border-color: var(--accent); }

.terminal-body {
  padding: 1.2rem clamp(1rem, 2vw, 1.6rem); min-height: 340px; max-height: 60vh; overflow-y: auto; overflow-x: hidden;
  font-size: var(--text-sm); line-height: 1.65; color: var(--fg);
}
.term-line { white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-word; }
.term-line.is-blank { height: 0.8em; }
.term-human { color: var(--term-human); }
.term-claude { color: var(--fg); }
.term-muted { color: var(--fg-dim); }
.term-dim { color: var(--fg-dim); font-style: italic; }
.term-success { color: var(--syntax-add); }
.term-status-line { color: var(--accent); }
.term-agent { color: var(--fg-muted); }
.term-agent .agent-key { color: var(--accent); }
.term-diff-del { color: var(--syntax-del); background: var(--syntax-del-bg); display: block; padding-inline: 0.4em; }
.term-diff-add { color: var(--syntax-add); background: var(--syntax-add-bg); display: block; padding-inline: 0.4em; }

.term-todo { display: flex; align-items: baseline; gap: 0.6em; }
.term-todo .box { color: var(--fg-dim); flex: none; transition: color var(--dur-base); }
.term-todo.done .box { color: var(--syntax-add); }
.term-todo.done .todo-text { color: var(--fg-muted); text-decoration: line-through; text-decoration-color: var(--fg-faint); }

.term-tool { margin-block: 0.15rem; }
.term-tool-head {
  display: flex; align-items: center; gap: 0.5em; width: 100%; text-align: left;
  color: var(--fg-muted); font-family: var(--font-mono); font-size: var(--text-sm);
  padding: 0.15rem 0; cursor: pointer;
}
.term-tool-head .caret { color: var(--accent); flex: none; transition: transform var(--dur-fast); display: inline-block; }
.term-tool-head .tool-name { color: var(--syntax-fn); }
.term-tool-head .tool-meta { color: var(--fg-dim); }
.term-tool-body {
  margin-left: 1.2em; padding: 0.4rem 0.8rem; border-left: 1px solid var(--border);
  color: var(--fg-dim); font-size: var(--text-xs); white-space: pre-wrap; overflow-wrap: anywhere;
  display: none;
}
.term-tool.open .term-tool-body { display: block; }
.term-tool.open .caret { transform: rotate(90deg); }

.term-cursor {
  display: inline-block; width: 0.6em; height: 1.05em; vertical-align: text-bottom;
  background: var(--accent); box-shadow: var(--glow-focus); margin-left: 1px;
}
.term-cursor.blink { animation: blink var(--cursor-blink) steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.terminal-input-row { display: flex; align-items: center; gap: 0.6em; padding: 0.7rem clamp(1rem, 2vw, 1.6rem); border-top: 1px solid var(--hairline); background: var(--surface); }
.terminal-input-glyph { color: var(--accent); font-size: var(--text-sm); }
.terminal-input { flex: 1; min-width: 0; background: none; border: none; font-family: var(--font-mono); font-size: var(--text-sm); color: var(--fg); outline: none; }
.terminal-input::placeholder { color: var(--fg-faint); }

.terminal-status {
  display: flex; align-items: center; gap: 0.6em; padding: 0.5rem 1rem;
  background: var(--surface); border-top: 1px solid var(--hairline);
  font-size: var(--text-2xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-dim);
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--status-idle); }
.status-dot.status-idle { background: var(--status-idle); }
.status-dot.status-active { background: var(--status-active); box-shadow: 0 0 10px var(--accent); animation: pulse 1.4s var(--ease-in-out) infinite; }
.status-dot.status-ok { background: var(--status-ok); box-shadow: 0 0 8px var(--status-ok); }
@keyframes pulse { 50% { opacity: 0.35; } }
.status-spacer { flex: 1; }
.status-ctx { color: var(--fg-faint); }

/* Demo region that morphs to match the diff */
.demo-region {
  margin-top: 1.5rem; border: 1px solid var(--border); background: var(--surface);
  border-radius: var(--radius-0); overflow: hidden;
}
.demo-label { display: flex; align-items: center; gap: 0.6em; padding: 0.6rem 1rem; border-bottom: 1px solid var(--hairline); font-family: var(--font-mono); font-size: var(--text-2xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-dim); }
.demo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--fg-faint); flex: none; }
.demo-region[data-phase="editing"] .demo-dot { background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.demo-region[data-phase="done"] .demo-dot { background: var(--syntax-add); box-shadow: 0 0 8px var(--syntax-add); }
.demo-label-state { margin-left: auto; color: var(--fg-faint); }
.demo-stage { position: relative; min-height: 180px; }
.demo-code {
  font-family: var(--font-mono); font-size: var(--text-xs); line-height: 1.7; color: var(--fg-muted);
  padding: 1.1rem clamp(1rem, 2vw, 1.5rem); margin: 0; white-space: pre-wrap; overflow-wrap: anywhere;
  transition: opacity var(--dur-slow) var(--ease-focus), filter var(--dur-slow) var(--ease-focus);
}
.demo-code .c-comment { color: var(--syntax-comment); }
.demo-code .c-kw { color: var(--syntax-keyword); }
.demo-code .c-fn { color: var(--syntax-fn); }
.demo-code .c-str { color: var(--syntax-string); }
.demo-code .c-attr { color: var(--syntax-attr); }
.demo-code .c-str.strike { color: var(--syntax-del); text-decoration: line-through; text-decoration-color: var(--syntax-del); background: var(--syntax-del-bg); }
.demo-code .c-str.added { color: var(--syntax-add); background: var(--syntax-add-bg); }

.demo-render {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.5rem; text-align: center; padding: 1.5rem; opacity: 0; pointer-events: none;
  background: radial-gradient(80% 120% at 50% 0%, var(--accent-tint) 0%, transparent 70%), var(--bg-elevated);
  transition: opacity var(--dur-cine) var(--ease-focus);
}
.demo-region[data-phase="done"] .demo-render { opacity: 1; }
.demo-region[data-phase="done"] .demo-code { opacity: 0; filter: blur(6px); }
.demo-render-kicker { font-family: var(--font-mono); font-size: var(--text-2xs); letter-spacing: 0.2em; color: var(--fg-muted); }
.demo-render-title { font-family: var(--font-mono); font-weight: 700; letter-spacing: 0.28em; font-size: clamp(1.4rem, 4vw, 2rem); }
.demo-render-tag { font-family: var(--font-display); font-style: italic; font-size: var(--text-lg); color: var(--accent); min-height: 1.4em; }

.terminal-caption { margin-top: 1.2rem; font-family: var(--font-mono); font-size: var(--text-xs); color: var(--fg-dim); letter-spacing: 0.02em; }

/* ======================================================= ORCHESTRATION */
.orch-layout { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: start; }
.orch-stage {
  position: relative; border: 1px solid var(--border); background:
    radial-gradient(60% 60% at 50% 45%, var(--accent-tint) 0%, transparent 70%), var(--bg-elevated);
  border-radius: var(--radius-0); aspect-ratio: 16 / 11; overflow: hidden; min-height: 300px;
}
.orch-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.orch-replay {
  position: absolute; right: 0.8rem; bottom: 0.8rem; z-index: 2;
  font-family: var(--font-mono); font-size: var(--text-2xs); letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fg-muted); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 0.4rem 0.7rem; background: color-mix(in srgb, var(--bg) 60%, transparent);
  display: inline-flex; gap: 0.4em; align-items: center; transition: color var(--dur-fast), border-color var(--dur-fast);
}
.orch-replay:hover, .orch-replay:focus-visible { color: var(--accent); border-color: var(--accent); }
.orch-replay { white-space: nowrap; max-width: calc(100% - 1.6rem); }
@media (max-width: 520px) { .orch-replay-seq { display: none; } }

.orch-side { display: flex; flex-direction: column; gap: clamp(1.5rem, 3vw, 2.5rem); }
.agent-list { display: flex; flex-direction: column; gap: 0.9rem; }
.agent-item { display: flex; flex-direction: column; gap: 0.15rem; padding-left: 1rem; border-left: 1px solid var(--border); }
.agent-item .agent-name { font-family: var(--font-mono); font-size: var(--text-sm); color: var(--accent-text); letter-spacing: 0.01em; }
.agent-item .agent-role { font-size: var(--text-sm); color: var(--fg-muted); }
.orch-legend { display: flex; flex-direction: column; gap: 0.6rem; padding-top: 1.2rem; border-top: 1px solid var(--hairline); }
.legend-row { display: flex; align-items: center; gap: 0.8rem; }
.legend-row dt { display: flex; align-items: center; gap: 0.5em; font-family: var(--font-mono); font-size: var(--text-xs); color: var(--fg); min-width: 0; }
.legend-row dd { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--fg-dim); }
.legend-swatch { width: 22px; height: 2px; flex: none; display: inline-block; }
.legend-active { background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.legend-dim { background: var(--fg-faint); }
.legend-merge { width: 10px; height: 10px; border-radius: 50%; background: var(--syntax-add); box-shadow: 0 0 8px var(--syntax-add); }

/* ============================================================== RECALL */
.recall-instrument { max-width: 1000px; margin-top: 1rem; }
.recall-doc {
  position: relative; z-index: 0; height: clamp(150px, 26vw, 240px); border: 1px solid var(--border);
  background: var(--bg-elevated); border-radius: var(--radius-0); overflow: hidden;
  display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 2px; padding: 14px; align-content: stretch;
}
.recall-col { display: flex; flex-direction: column; gap: 4px; justify-content: flex-start; min-width: 0; }
.recall-tick { height: 2px; background: var(--fg-faint); opacity: 0.5; border-radius: 2px; }
.recall-tick.dim { opacity: 0.18; }
.recall-needle {
  position: absolute; top: 0; bottom: 0; width: 2px; background: var(--accent); z-index: 3;
  box-shadow: 0 0 14px var(--accent); transform: translateX(-50%);
  transition: left var(--dur-base) var(--ease-focus);
}
.recall-needle::before, .recall-needle::after {
  content: ""; position: absolute; left: 50%; transform: translateX(-50%);
  border-left: 5px solid transparent; border-right: 5px solid transparent;
}
.recall-needle::before { top: -1px; border-top: 6px solid var(--accent); }
.recall-needle::after { bottom: -1px; border-bottom: 6px solid var(--accent); }
.recall-hit {
  position: absolute; z-index: 4; height: 3px; background: var(--accent); border-radius: 2px;
  box-shadow: 0 0 18px var(--accent-glow); opacity: 0; transform: scaleX(0.2);
  transition: opacity var(--dur-base) var(--ease-focus), transform var(--dur-slow) var(--ease-focus), filter var(--dur-slow) var(--ease-focus);
  filter: blur(4px);
}
.recall-doc.found .recall-hit { opacity: 1; transform: scaleX(1); filter: blur(0); }

.recall-readout { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 1.2rem; }
.recall-token { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: var(--text-lg); color: var(--fg); letter-spacing: 0.02em; }
.recall-found { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.16em; color: var(--fg-dim); transition: color var(--dur-base); }
.recall-found[data-state="found"] { color: var(--syntax-add-text); }
.recall-found[data-state="found"]::before { content: "✓ "; }
.recall-found[data-state="searching"] { color: var(--accent-text); }

/* Slider spans the full instrument width (same origin as the needle's .recall-doc); the
   0 / 1,000,000 end labels sit on their own row so they no longer inset the track. */
.recall-scrubber { margin-top: 1rem; }
.recall-scale { display: flex; align-items: baseline; justify-content: space-between; margin-top: 0.5rem; }
.recall-end { font-family: var(--font-mono); font-size: var(--text-2xs); color: var(--fg-dim); }
.recall-slider { -webkit-appearance: none; appearance: none; display: block; width: 100%; min-width: 0; height: 3px; border-radius: var(--radius-pill); background: var(--surface-2); outline-offset: 6px; }
.recall-slider::-webkit-slider-runnable-track { height: 3px; border-radius: var(--radius-pill); background: linear-gradient(90deg, var(--accent) var(--val, 74%), var(--surface-2) var(--val, 74%)); }
.recall-slider::-moz-range-track { height: 3px; border-radius: var(--radius-pill); background: var(--surface-2); }
.recall-slider::-moz-range-progress { height: 3px; border-radius: var(--radius-pill); background: var(--accent); }
.recall-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent); border: 3px solid var(--bg); box-shadow: var(--glow-focus); margin-top: -8px; cursor: grab;
}
.recall-slider::-moz-range-thumb { width: 16px; height: 16px; border-radius: 50%; background: var(--accent); border: 3px solid var(--bg); box-shadow: var(--glow-focus); cursor: grab; }
.recall-slider:active::-webkit-slider-thumb { cursor: grabbing; }

/* ========================================================== FIELD NOTES */
.field-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: var(--grid-gap); }
.field-card {
  position: relative; border: 1px solid var(--border); border-radius: var(--radius-0);
  padding: clamp(1.5rem, 2.6vw, 2.2rem); background: var(--surface);
  display: flex; flex-direction: column; gap: 0.7rem; min-height: 260px;
  transition: border-color var(--dur-base) var(--ease-focus), transform var(--dur-base) var(--ease-focus), background var(--dur-base);
  overflow: hidden;
}
.field-card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 0; background: var(--accent);
  transition: width var(--dur-slow) var(--ease-focus); box-shadow: 0 0 10px var(--accent);
}
.field-card:hover { border-color: var(--border-strong); transform: translateY(-4px); }
.field-card:hover::before { width: 100%; }
.field-idx { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.16em; color: var(--accent-text); }
.field-title { font-family: var(--font-display); font-weight: 400; font-size: var(--text-xl); letter-spacing: -0.02em; line-height: 1.05; }
.field-desc { font-size: var(--text-sm); color: var(--fg-muted); flex: 1; }
/* A concrete per-card detail (not a fake link): a short mono strip led by an accent tick. */
.field-note {
  display: inline-flex; align-items: center; gap: 0.55em; width: fit-content;
  font-family: var(--font-mono); font-size: var(--text-2xs); text-transform: uppercase;
  letter-spacing: 0.12em; color: var(--fg-muted);
}
.field-note::before { content: ""; width: 14px; height: 1px; background: var(--accent); flex: none; }

/* ============================================================ EVIDENCE */
.evidence-table { border-top: 1px solid var(--border); max-width: 1000px; }
.evidence-row { display: grid; grid-template-columns: minmax(0, 0.5fr) minmax(0, 1fr); gap: 1rem 2rem; padding-block: clamp(1.2rem, 2.4vw, 1.8rem); border-bottom: 1px solid var(--hairline); position: relative; }
.evidence-row::after { content: ""; position: absolute; left: 0; bottom: -1px; height: 1px; width: 0; background: var(--accent); transition: width var(--dur-epic) var(--ease-focus); }
.evidence-row.is-visible::after { width: 100%; }
.reveal-all .evidence-row::after { width: 100%; }
.evidence-term { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.16em; color: var(--fg-muted); padding-top: 0.35em; }
.evidence-def { display: flex; flex-direction: column; gap: 0.4rem; }
.evidence-figure { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: clamp(2rem, 1rem + 4.5vw, 4rem); line-height: 0.95; letter-spacing: -0.02em; color: var(--accent); }
.evidence-strong { font-family: var(--font-display); font-size: var(--text-xl); letter-spacing: -0.02em; line-height: 1.1; }
.evidence-note { font-size: var(--text-base); color: var(--fg-muted); }
.evidence-note--wide { font-size: var(--text-lg); color: var(--fg); max-width: 52ch; }

/* ================================================================ CODA */
.coda { position: relative; overflow: hidden; text-align: center; padding-block: clamp(6rem, 15vh, 13rem); }
.coda-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; opacity: 0.7; }
.coda-vignette { position: absolute; inset: 0; z-index: 1; pointer-events: none; background: radial-gradient(circle at 50% 45%, transparent 30%, color-mix(in srgb, var(--bg) 82%, transparent) 78%); }
.coda-content { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; }
.coda-content .kicker { justify-content: center; }
.coda-heading { font-family: var(--font-display); font-weight: 380; font-size: var(--text-3xl); letter-spacing: -0.03em; line-height: 1.0; margin-top: var(--space-4); }
.coda-tagline { font-family: var(--font-display); font-style: italic; font-size: var(--text-xl); color: var(--accent); margin-top: var(--space-4); text-wrap: balance; }
.coda .section-lead { margin-inline: auto; text-align: center; }

.coda-install { margin-top: var(--space-7); width: 100%; display: flex; flex-direction: column; align-items: center; gap: 0.8rem; }
.install-cmd {
  display: inline-flex; align-items: center; gap: 0.7em; flex-wrap: wrap; justify-content: center;
  font-family: var(--font-mono); font-size: var(--text-sm); max-width: 100%;
  background: var(--bg-elevated); border: 1px solid var(--border-strong); border-radius: var(--radius-0);
  padding: 0.9rem 1.2rem; color: var(--fg); position: relative;
  transition: border-color var(--dur-fast), background var(--dur-instant), color var(--dur-instant), box-shadow var(--dur-fast);
}
.install-cmd:hover, .install-cmd:focus-visible { border-color: var(--accent); box-shadow: var(--glow-accent); }
.install-prompt { color: var(--accent); }
.install-code { overflow-wrap: anywhere; }
.install-hint { font-size: var(--text-2xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--fg-dim); padding-left: 0.6em; border-left: 1px solid var(--border); }
.install-cmd.flash { background: var(--accent); color: var(--accent-contrast); border-color: var(--accent); }
.install-cmd.flash .install-prompt, .install-cmd.flash .install-hint { color: var(--accent-contrast); border-color: color-mix(in srgb, var(--accent-contrast) 40%, transparent); }
.install-copied { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.14em; text-transform: uppercase; color: var(--syntax-add); min-height: 1.2em; }
.install-copied::before { content: attr(data-icon); }

.coda-ctas { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-top: var(--space-7); }
.btn {
  display: inline-flex; align-items: center; gap: 0.6em; font-family: var(--font-mono); font-size: var(--text-xs);
  letter-spacing: 0.1em; text-transform: uppercase; padding: 0.9rem 1.5rem; border-radius: var(--radius-pill);
  border: 1px solid transparent; transition: transform var(--dur-fast) var(--ease-focus), box-shadow var(--dur-fast), background var(--dur-fast), border-color var(--dur-fast), color var(--dur-fast);
}
.btn .btn-arrow { transition: transform var(--dur-base) var(--ease-focus); }
.btn:hover .btn-arrow { transform: translateX(4px); }
.btn--primary { background: var(--accent); color: var(--accent-contrast); box-shadow: var(--glow-accent); }
.btn--primary:hover, .btn--primary:focus-visible { background: var(--accent-hover); transform: translateY(-2px); }
.btn--ghost { border-color: var(--border-strong); color: var(--fg); }
.btn--ghost:hover, .btn--ghost:focus-visible { border-color: var(--accent); color: var(--accent); }

.coda-cursor { margin-top: var(--space-8); }
.coda-cursor-block { display: inline-block; width: 12px; height: 24px; background: var(--accent); box-shadow: var(--glow-focus); animation: blink var(--cursor-blink) steps(1) infinite; }

/* ============================================================== FOOTER */
.site-footer { border-top: 1px solid var(--hairline); padding-block: clamp(3rem, 6vw, 5rem); }
.footer-inner { display: flex; flex-direction: column; gap: 1.2rem; align-items: flex-start; }
.footer-brand { display: inline-flex; align-items: center; gap: 0.6rem; }
.footer-wordmark { font-family: var(--font-mono); font-weight: 700; letter-spacing: 0.28em; font-size: var(--text-sm); }
.footer-line { font-family: var(--font-display); font-style: italic; font-size: var(--text-lg); color: var(--fg-muted); }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1rem 1.8rem; }
.footer-nav a { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.06em; color: var(--fg-muted); position: relative; padding-block: 0.4rem; }
.footer-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px; background: var(--accent); transition: right var(--dur-base) var(--ease-focus); }
.footer-nav a:hover, .footer-nav a:focus-visible { color: var(--fg); }
.footer-nav a:hover::after { right: 0; }
.footer-fine { font-family: var(--font-mono); font-size: var(--text-2xs); line-height: 1.7; color: var(--fg-muted); max-width: 70ch; letter-spacing: 0.02em; }

/* ========================================================= RESPONSIVE */
@media (max-width: 900px) {
  .tangible-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .tangible-figure { position: static; }
  .orch-layout { grid-template-columns: 1fr; }
  /* Drop the 300px min-height here: with an aspect-ratio it becomes an implied 450px
     min-WIDTH that overflows narrow phones and clips the merged node + replay button. */
  .orch-stage { aspect-ratio: 3 / 2; min-height: 0; }
}
@media (max-width: 760px) {
  /* Replace the section nav with a disclosure menu instead of removing wayfinding entirely.
     Gated on .js so a no-JS load never shows a dead trigger. */
  .js .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0; display: none;
    background: color-mix(in srgb, var(--bg) 97%, transparent);
    -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md);
    padding: var(--space-2) var(--gutter) var(--space-4);
    max-height: calc(100vh - var(--header-h)); max-height: calc(100dvh - var(--header-h)); overflow-y: auto;
  }
  .site-header[data-nav-open="true"] .site-nav { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav li { border-bottom: 1px solid var(--hairline); }
  .site-nav li:last-child { border-bottom: none; }
  .site-nav a { display: flex; width: 100%; padding-block: 0.9rem; font-size: var(--text-sm); }
  .site-nav a::after { display: none; }
  .evidence-row { grid-template-columns: 1fr; gap: 0.5rem; }
  .toggle-label { display: none; }
}

/* Comfortable touch targets for the primary controls on coarse pointers (Finding: tap size). */
@media (pointer: coarse) {
  .terminal-replay, .orch-replay { min-height: 40px; }
  .theme-toggle { padding: 0.6rem 0.5rem; }
}
@media (max-width: 460px) {
  .terminal-body { min-height: 300px; }
  .hero-hints { gap: var(--space-4); }
  .brand-text { letter-spacing: 0.22em; }
}

/* ==================================================== REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important; animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important; scroll-behavior: auto !important;
  }
  .js .reveal, .js .hairline--draw { opacity: 1 !important; transform: none !important; filter: none !important; }
  .bar-fill { transition: none !important; }
  .hero-scroll-line::after { display: none; }
  .coda-cursor-block, .term-cursor.blink { animation: none !important; }
  .status-dot.status-active { animation: none !important; }
}