/* ============================================================
   DINAH — hand-crafted stylesheet
   Palette derived from the project's own SVG identity:
   light: paper #f1f7fa · ink #12202b · orange #e87524
   dark:  night #08121a · frost #eaf5fb · ember #ffb15c
   Type: Cabinet Grotesk (display) · Satoshi (body) · JetBrains Mono
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  --space-1: 0.25rem;  --space-2: 0.5rem;   --space-3: 0.75rem;
  --space-4: 1rem;     --space-5: 1.25rem;  --space-6: 1.5rem;
  --space-8: 2rem;     --space-10: 2.5rem;  --space-12: 3rem;
  --space-16: 4rem;    --space-20: 5rem;    --space-24: 6rem;

  --font-display: 'Cabinet Grotesk', 'Avenir Next', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Avenir Next', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-default: 1060px;
  --content-prose: 680px;

  --header-h: 4.25rem;
}

:root, [data-theme='light'] {
  --color-bg: #f1f7fa;
  --color-surface: #ffffff;
  --color-surface-2: #f7fafc;
  --color-surface-sunken: #e9f1f5;
  --color-border: oklch(0.28 0.03 240 / 0.14);
  --color-divider: oklch(0.28 0.03 240 / 0.10);
  --color-text: #12202b;
  --color-text-muted: #4e6070;
  --color-text-faint: #8296a3;
  --color-accent: #e87524;
  --color-accent-strong: #b85c10;   /* body-size text & links */
  --color-accent-soft: oklch(0.68 0.15 55 / 0.12);
  --color-on-accent: #ffffff;
  --color-good: #2e7d43;
  --shadow-sm: 0 1px 2px oklch(0.25 0.03 240 / 0.06);
  --shadow-md: 0 4px 16px oklch(0.25 0.03 240 / 0.10);
  --shadow-lg: 0 16px 40px oklch(0.25 0.03 240 / 0.14);
  --terminal-bg: #0b1721;
  --terminal-text: #dcebf3;
}

[data-theme='dark'] {
  --color-bg: #08121a;
  --color-surface: #0d1b26;
  --color-surface-2: #10202c;
  --color-surface-sunken: #0a161f;
  --color-border: oklch(0.92 0.02 230 / 0.13);
  --color-divider: oklch(0.92 0.02 230 / 0.09);
  --color-text: #eaf5fb;
  --color-text-muted: #9db1bd;
  --color-text-faint: #5d7280;
  --color-accent: #ffb15c;
  --color-accent-strong: #ffc07d;
  --color-accent-soft: oklch(0.78 0.14 65 / 0.12);
  --color-on-accent: #08121a;
  --color-good: #7fc98f;
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.35);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.45);
  --shadow-lg: 0 16px 40px oklch(0 0 0 / 0.55);
  --terminal-bg: #0b1721;
  --terminal-text: #dcebf3;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
  hanging-punctuation: first last;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 300ms ease, color 300ms ease;
}

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

input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }

h1, h2, h3, h4 { text-wrap: balance; line-height: 1.12; font-family: var(--font-display); letter-spacing: -0.01em; }
p, li, figcaption { text-wrap: pretty; }

::selection { background: oklch(from var(--color-accent) l c h / 0.30); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

a { color: inherit; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--color-accent); color: var(--color-on-accent);
  padding: var(--space-2) var(--space-4); border-radius: 0 0 var(--radius-sm) 0;
  z-index: 200; font-size: var(--text-sm);
}
.skip-link:focus { left: 0; }

@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;
  }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0;
}

/* ---------- layout helpers ---------- */
.container { width: min(var(--content-default), 100% - 3rem); margin-inline: auto; }
.prose { width: min(var(--content-prose), 100% - 3rem); margin-inline: auto; }

section { position: relative; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 300ms ease, background 300ms ease;
}
.site-header.is-scrolled { border-bottom-color: var(--color-divider); }
.header-inner {
  height: 100%;
  display: flex; align-items: center; gap: var(--space-6);
}
.wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.55rem;
}
.wordmark .logo {
  width: 1.75rem; height: 1.75rem;
  display: block;
}
.footer-brand .wordmark .logo { width: 1.55rem; height: 1.55rem; }
.site-nav { display: flex; gap: var(--space-5); margin-left: auto; }
.site-nav a {
  font-size: var(--text-sm); font-weight: 500;
  text-decoration: none; color: var(--color-text-muted);
  padding: var(--space-1) 0;
}
.site-nav a:hover { color: var(--color-text); }
.header-actions { display: flex; align-items: center; gap: var(--space-2); margin-left: var(--space-2); }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid transparent;
  transition: color var(--transition-interactive), background var(--transition-interactive), border-color var(--transition-interactive);
}
.icon-btn:hover { color: var(--color-text); background: var(--color-surface-sunken); }
.icon-btn svg { width: 1.15rem; height: 1.15rem; }

.lang-toggle {
  display: inline-flex; align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  font-size: var(--text-xs); font-weight: 700;
  font-family: var(--font-mono);
}
.lang-toggle button {
  padding: 0.4rem 0.65rem;
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.lang-toggle button[aria-pressed='true'] { color: var(--color-on-accent); background: var(--color-accent); }
.lang-toggle button + button { border-left: 1px solid var(--color-border); }

/* scroll progress */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: var(--color-accent);
  z-index: 150;
  transition: width 80ms linear;
}

/* ---------- hero ---------- */
.hero { padding-block: clamp(var(--space-16), 10vh, var(--space-24)) clamp(var(--space-12), 8vh, var(--space-20)); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}
.kicker {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent-strong);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.kicker::before {
  content: ''; width: 1.75rem; height: 1px; background: var(--color-accent);
}
.hero h1 {
  font-size: var(--text-3xl);
  font-weight: 800;
  max-width: 14ch;
  margin-bottom: var(--space-5);
}
.hero h1 em { font-style: normal; color: var(--color-accent); }
.hero-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-bottom: var(--space-8);
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-6); }

.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 700;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), background var(--transition-interactive), color var(--transition-interactive), border-color var(--transition-interactive);
}
.btn-solid { background: var(--color-accent); color: var(--color-on-accent); }
.btn-solid:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-solid:active { transform: translateY(0); }
[data-theme='dark'] .btn-solid { background: var(--color-accent); color: var(--color-on-accent); }
.btn-ghost { border: 1px solid var(--color-border); color: var(--color-text); }
.btn-ghost:hover { border-color: var(--color-accent); color: var(--color-accent-strong); }
.btn svg { width: 1rem; height: 1rem; }

.hero-badges { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.badge b { color: var(--color-text); font-weight: 600; }

/* terminal */
.terminal {
  background: var(--terminal-bg);
  border: 1px solid oklch(0.92 0.02 230 / 0.10);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--terminal-text);
}
.terminal-bar {
  display: flex; align-items: center; gap: var(--space-2);
  padding: 0.65rem var(--space-4);
  border-bottom: 1px solid oklch(0.92 0.02 230 / 0.08);
}
.terminal-bar .tdot { width: 0.65rem; height: 0.65rem; border-radius: 50%; background: #2c3f4d; }
.terminal-bar .tdot:first-child { background: #e0655a; }
.terminal-bar .tdot:nth-child(2) { background: #e0b04d; }
.terminal-bar .tdot:nth-child(3) { background: #7bc47f; }
.terminal-bar .terminal-title {
  margin-left: auto;
  font-size: 0.7rem;
  color: #5d7686;
  letter-spacing: 0.05em;
}
.terminal-body { padding: var(--space-5) var(--space-5) var(--space-6); line-height: 1.75; min-height: 12.5rem; }
.terminal-body .prompt { color: #5d7686; }
.terminal-body .cmd { color: #ffb15c; font-weight: 500; }
.terminal-body .out { color: #9db1bd; }
.terminal-body .ok { color: #7fc98f; }
.terminal-caret {
  display: inline-block; width: 0.55rem; height: 1.05rem;
  background: #ffb15c; vertical-align: text-bottom; margin-left: 2px;
  animation: caret-blink 1.1s steps(1) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }
.terminal-copy {
  position: absolute; top: 3.4rem; right: 0.9rem;
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--font-mono); font-size: var(--text-xs);
  color: #9db1bd;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid oklch(0.92 0.02 230 / 0.14);
  background: oklch(0.25 0.03 240 / 0.6);
  opacity: 0;
  transition: opacity var(--transition-interactive);
}
.terminal-wrap { position: relative; }
.terminal-wrap:hover .terminal-copy, .terminal-copy:focus-visible { opacity: 1; }
.terminal-copy:hover { color: #ffb15c; border-color: #ffb15c; }
.terminal-copy svg { width: 0.9rem; height: 0.9rem; }

/* ---------- stats strip ---------- */
.stats {
  border-block: 1px solid var(--color-divider);
  background: var(--color-surface-2);
  padding-block: var(--space-8);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-4);
}
.stat { text-align: left; }
.stat-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.1;
}
.stat-value .unit { color: var(--color-accent); font-size: 0.6em; margin-left: 0.1em; }
.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  letter-spacing: 0.02em;
}

/* ---------- sections ---------- */
.section { padding-block: clamp(var(--space-12), 7vw, var(--space-24)); }
.section-tight { padding-block: clamp(var(--space-10), 5vw, var(--space-16)); }
.section-head { margin-bottom: clamp(var(--space-8), 4vw, var(--space-12)); }
.section-head h2 { font-size: var(--text-2xl); font-weight: 800; max-width: 22ch; }
.section-head p { margin-top: var(--space-3); color: var(--color-text-muted); max-width: 60ch; }

/* ---------- modules ---------- */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-4);
}
.mod-card {
  position: relative;
  grid-column: span 2;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-decoration: none;
  overflow: hidden;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.mod-card:nth-child(6n+1), .mod-card:nth-child(6n+2), .mod-card:nth-child(6n+3) { grid-column: span 2; }
.mod-card--wide { grid-column: span 3; }
.modules-grid .mod-card--capstone {
  grid-column: span 6;
  display: flex;
  align-items: baseline;
  gap: var(--space-8);
}
.modules-grid .mod-card--capstone .mod-name { margin-bottom: 0; flex-shrink: 0; }
.modules-grid .mod-card--capstone .mod-desc { flex: 1; max-width: 60ch; }
.mod-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in oklab, var(--color-accent) 45%, var(--color-border));
}
/* Emil-style spotlight */
.mod-card::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%), oklch(from var(--color-accent) l c h / 0.08), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-interactive);
  pointer-events: none;
}
.mod-card:hover::before { opacity: 1; }
.mod-name {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.status {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.status::before { content: ''; width: 0.4rem; height: 0.4rem; border-radius: 50%; background: var(--color-good); }
.status--foundation::before { background: var(--color-accent); }
.mod-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.55; }
.mod-desc code {
  font-family: var(--font-mono); font-size: 0.85em;
  color: var(--color-accent-strong);
}

/* ---------- architecture ---------- */
.arch-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}
.arch-notes { display: grid; gap: var(--space-5); }
.arch-note h3 { font-size: var(--text-lg); font-weight: 700; margin-bottom: var(--space-1); }
.arch-note p { font-size: var(--text-sm); color: var(--color-text-muted); }
.arch-svg { width: 100%; height: auto; }
.arch-svg--mobile { display: none; }
.arch-svg .layer-box {
  fill: var(--color-surface);
  stroke: var(--color-border);
  rx: 10;
}
.arch-svg .layer-label {
  font-family: var(--font-mono); font-size: 13px; fill: var(--color-text);
}
.arch-svg .layer-sub {
  font-family: var(--font-mono); font-size: 10.5px; fill: var(--color-text-muted);
}
.arch-svg .layer-core { fill: var(--color-accent-soft); stroke: var(--color-accent); }
.arch-svg .core-label { fill: var(--color-accent-strong); font-weight: 600; }
.arch-svg--mobile .layer-label { font-size: 17px; }
.arch-svg--mobile .layer-sub { font-size: 13.5px; }

/* ---------- benchmarks ---------- */
.bench-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.bench-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.bench-card h3 { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-1); }
.bench-card .bench-what { font-size: var(--text-xs); color: var(--color-text-muted); margin-bottom: var(--space-4); }
.bar-row { margin-bottom: var(--space-3); }
.bar-label {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--font-mono); font-size: var(--text-xs);
  margin-bottom: var(--space-1);
}
.bar-label .val { color: var(--color-text); font-weight: 600; }
.bar-label .val small { color: var(--color-text-faint); font-weight: 400; }
.bar-track {
  height: 0.5rem;
  border-radius: var(--radius-full);
  background: var(--color-surface-sunken);
  overflow: hidden;
}
.bar-fill {
  height: 100%; width: 0;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  transition: width 900ms var(--ease-out);
}
.bar-fill--muted { background: var(--color-text-faint); }
.bench-note {
  margin-top: var(--space-5);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- honest limits ---------- */
.limits {
  background: var(--color-surface-2);
  border-block: 1px solid var(--color-divider);
}
.limits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
.limit-card {
  display: flex; gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.limit-no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 600;
  flex-shrink: 0;
}
.limit-card h3 { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-1); }
.limit-card p { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ---------- roadmap ---------- */
.timeline { position: relative; padding-left: var(--space-8); }
.timeline::before {
  content: '';
  position: absolute; left: 0.55rem; top: 0.4rem; bottom: 0.4rem;
  width: 1px; background: var(--color-divider);
}
.tl-item { position: relative; padding-bottom: var(--space-10); }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: '';
  position: absolute; left: calc(-1 * var(--space-8) + 0.55rem); top: 0.5rem;
  transform: translateX(-50%);
  width: 0.75rem; height: 0.75rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-bg);
}
.tl-item--done::before { background: var(--color-good); }
.tl-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
}
.tl-item h3 { font-size: var(--text-lg); font-weight: 700; margin-block: var(--space-1) var(--space-2); }
.tl-item p { font-size: var(--text-sm); color: var(--color-text-muted); max-width: 62ch; }
.tl-list { margin-top: var(--space-3); display: grid; gap: var(--space-2); }
.tl-list li {
  font-size: var(--text-sm); color: var(--color-text-muted);
  padding-left: var(--space-4); position: relative;
  list-style: none;
}
.tl-list li::before {
  content: '→'; position: absolute; left: 0;
  color: var(--color-accent);
}

/* ---------- blog ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.post-card {
  grid-column: span 3;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.post-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: color-mix(in oklab, var(--color-accent) 45%, var(--color-border)); }
.post-card-art {
  background: linear-gradient(160deg, var(--color-surface-sunken), var(--color-accent-soft));
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-6);
  min-height: 220px;
}
.post-card-art svg { width: 72%; height: auto; }
.post-card-body { padding: var(--space-6); }
.post-meta {
  display: flex; gap: var(--space-3); align-items: baseline;
  font-family: var(--font-mono); font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.post-card-body h3 { font-size: var(--text-xl); font-weight: 800; margin-bottom: var(--space-2); }
.post-card-body p { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-4); }
.post-read {
  font-family: var(--font-mono); font-size: var(--text-xs);
  color: var(--color-accent-strong);
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12) var(--space-8);
  margin-top: var(--space-12);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}
.footer-brand .wordmark { margin-bottom: var(--space-3); }
.footer-brand p { font-size: var(--text-sm); color: var(--color-text-muted); max-width: 34ch; }
.footer-col h4 {
  font-family: var(--font-mono); font-size: var(--text-xs);
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
  font-weight: 600;
}
.footer-col ul { list-style: none; display: grid; gap: var(--space-2); }
.footer-col a {
  font-size: var(--text-sm); text-decoration: none; color: var(--color-text-muted);
}
.footer-col a:hover { color: var(--color-accent-strong); }
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: var(--space-4); justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ---------- reveal animations (scroll-driven, no CLS) ---------- */
.reveal { opacity: 1; }
@supports (animation-timeline: view()) {
  .reveal {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 85%;
  }
  @keyframes reveal-fade { to { opacity: 1; } }
}

/* ---------- post page ---------- */
.post-hero { padding-block: clamp(var(--space-12), 8vh, var(--space-20)) var(--space-8); }
.post-hero .kicker { margin-bottom: var(--space-3); }
.post-hero h1 { font-size: var(--text-2xl); font-weight: 800; max-width: 20ch; }
.post-meta-row {
  display: flex; flex-wrap: wrap; gap: var(--space-4);
  margin-top: var(--space-4);
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint);
}
.post-body { padding-block: var(--space-8) var(--space-16); }
.post-body h2 { font-size: var(--text-xl); font-weight: 800; margin-top: var(--space-10); margin-bottom: var(--space-3); }
.post-body h3 { font-size: var(--text-lg); font-weight: 700; margin-top: var(--space-8); margin-bottom: var(--space-2); }
.post-body p { margin-bottom: var(--space-4); color: var(--color-text); }
.post-body p.muted { color: var(--color-text-muted); }
.post-body ul { margin: 0 0 var(--space-4) var(--space-5); }
.post-body li { margin-bottom: var(--space-2); }
.post-body code {
  font-family: var(--font-mono); font-size: 0.87em;
  background: var(--color-surface-sunken);
  border: 1px solid var(--color-divider);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}
.post-body pre {
  font-family: var(--font-mono); font-size: var(--text-sm);
  background: var(--terminal-bg); color: var(--terminal-text);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  overflow-x: auto;
  margin-bottom: var(--space-5);
  line-height: 1.7;
}
.post-body pre code { background: none; border: none; padding: 0; }
.post-body .pull-quote {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  line-height: 1.45;
  color: var(--color-text);
  border-left: none;
  padding: var(--space-5) var(--space-6);
  margin-block: var(--space-8);
  background: var(--color-surface-2);
  border-radius: var(--radius-lg);
  position: relative;
}
.post-body .pull-quote::before {
  content: '';
  position: absolute; left: 0; top: var(--space-5); bottom: var(--space-5);
  width: 3px; border-radius: 3px;
  background: var(--color-accent);
}
.post-body .pull-quote em { color: var(--color-accent-strong); font-style: normal; }
.post-nav {
  display: flex; justify-content: space-between; gap: var(--space-4);
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-divider);
}

/* mobile nav */
.mobile-nav-btn { display: none; }
.mobile-nav {
  display: none;
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-divider);
  box-shadow: var(--shadow-md);
  padding: var(--space-2) var(--space-4) var(--space-4);
}
.mobile-nav.is-open { display: grid; gap: var(--space-1); }
.mobile-nav a {
  text-decoration: none; color: var(--color-text);
  font-size: var(--text-sm); font-weight: 500;
  padding: var(--space-3) var(--space-2);
  border-radius: var(--radius-md);
}
.mobile-nav a:hover { background: var(--color-surface-sunken); }

/* terminal on small screens */
@media (max-width: 560px) {
  .terminal-body { font-size: 0.78rem; padding: var(--space-4); line-height: 1.7; }
  .terminal-body .out, .terminal-body .ok { display: inline; }
}

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .arch-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); row-gap: var(--space-6); }
  .bench-cards { grid-template-columns: 1fr; }
  .modules-grid { grid-template-columns: repeat(2, 1fr); }
  .modules-grid > .mod-card { grid-column: span 1; }
  .modules-grid .mod-card--capstone { grid-column: span 2; flex-direction: column; gap: var(--space-2); align-items: stretch; }
  .modules-grid .mod-card--capstone .mod-desc { max-width: none; }
  .post-card { grid-column: span 1; grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .site-nav { display: none; }
  .mobile-nav-btn { display: inline-flex; }
  .blog-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: var(--space-6); }
  .stat-label { font-size: 0.8rem; }
  .modules-grid { grid-template-columns: 1fr; gap: var(--space-3); }
  .modules-grid > .mod-card { grid-column: span 1; }
  .modules-grid .mod-card--capstone { grid-column: span 1; }
  .mod-card { padding: var(--space-4); }
  .limits-grid { grid-template-columns: 1fr; }
  .hero-badges { gap: var(--space-2); }
  .hero-badges .badge { padding: 0.25rem 0.5rem; }
  .arch-svg--desktop { display: none; }
  .arch-svg--mobile { display: block; }
  .post-card-art { min-height: 150px; }
}