/* ─────────────────────────────────────────────────────────────
   ODW.AI · v2 responsive prototype
   Design language preserved from v1; layout is real semantic HTML,
   fluid type via clamp(), and mobile-first (no scale transform).
   ───────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── Design Tokens ── */
:root {
  /* Colors (unchanged from v1) */
  --ink:        #14110F;
  --ink-2:      #2A2622;
  --ink-3:      #5A544E;
  --ink-4:      #6A645C;   /* darkened from #8A847C for WCAG AA */
  --paper:      #F6F2EC;
  --paper-2:    #ECE6DC;
  --paper-3:    #E2DBCE;
  --rule:       #D6CFC0;
  --accent:     #FF5A1F;
  --accent-2:   #FFB199;
  --accent-soft:#FFE9DF;
  --accent-ink: #B23A0E;
  --good:       #1F7A4D;
  --warn:       #B58900;
  --card:       #FFFFFF;
  --hover:      #FFF5F0;
  --code-bg:    #F6F2EC;

  /* Transparency tokens */
  --overlay:       rgba(0,0,0,0.35);
  --shadow:        rgba(0,0,0,0.15);
  --shadow-sm:     rgba(0,0,0,0.08);
  --glass-border:  rgba(255,255,255,0.15);
  --glass-subtle:  rgba(255,255,255,0.06);
  --glass-hover:   rgba(255,255,255,0.04);
  --accent-soft-2: rgba(255,90,31,0.1);
  --accent-bg:     rgba(255,90,31,0.08);
  --good-soft:     rgba(31,122,77,0.08);
  --warn-bg:       rgba(181,137,0,0.12);
  --warn-soft:     rgba(181,137,0,0.08);

  /* Type ramp — fluid clamp() from mobile → desktop */
  --fs-hero:     clamp(2.75rem, 6vw + 1rem, 7.5rem);   /*  44 → 120 px */
  --fs-h2:       clamp(1.75rem, 3vw + 0.5rem, 3.25rem);/*  28 →  52 px */
  --fs-lead:     clamp(1.0625rem, 0.6vw + 0.85rem, 1.375rem); /* 17 → 22 */
  --fs-body:     clamp(0.9375rem, 0.3vw + 0.85rem, 1.0625rem);/* 15 → 17 */
  --fs-eyebrow:  clamp(0.6875rem, 0.15vw + 0.65rem, 0.8125rem);/*11 → 13 */
  --fs-big-num:  clamp(3.5rem, 6vw + 1rem, 7rem);      /*  56 → 112 px */

  /* Spacing scale */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.5rem;
  --sp-6:  2rem;
  --sp-7:  3rem;
  --sp-8:  4rem;
  --sp-9:  6rem;
  --sp-10: 8rem;

  /* Section padding — grows with viewport */
  --section-y: clamp(3rem, 6vw, 7rem);
  --section-x: clamp(1.25rem, 4vw, 6rem);
  --content-max: 1440px;

  /* Layout */
  --radius:      6px;
  --radius-lg:   12px;
  --nav-h:       64px;         /* mobile top bar height */
  --sticky-h:    64px;         /* mobile bottom sticky bar */

  /* Motion */
  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast:    150ms;
  --dur:         240ms;
}

/* ── Dark mode (auto) ── */
@media (prefers-color-scheme: dark) {
  :root {
    --ink:        #F6F2EC;
    --ink-2:      #E2DBCE;
    --ink-3:      #B8B1A5;
    --ink-4:      #8A847C;
    --paper:      #14110F;
    --paper-2:    #1F1B18;
    --paper-3:    #2A2622;
    --rule:       #3A342E;
    --accent-soft:#3A1F14;
    --card:       #1F1B18;
    --hover:      #2A2622;
    --code-bg:    #2A2622;

    /* Dark-mode shadow overrides — deeper shadows on dark backgrounds */
    --shadow:        rgba(0,0,0,0.4);
    --shadow-sm:     rgba(0,0,0,0.2);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: var(--fs-body);
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'ss01', 'cv11';
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

/* Focus visibility (accessibility) */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ── Typographic utilities ── */
.serif {
  font-family: 'Instrument Serif', 'Times New Roman', serif;
  font-weight: 400;
  letter-spacing: -0.015em;
}
.mono {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}
.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 14px;
  background: var(--accent);
  border-radius: 1px;
}
.big-num {
  font-family: 'Instrument Serif', serif;
  font-size: var(--fs-big-num);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.source {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink-4);
  letter-spacing: 0.02em;
}
.accent { color: var(--accent); }
.italic { font-style: italic; }

/* ═══════════════════════════════════════════════════════════
   NAVIGATION — mobile top bar + desktop sidebar
   ═══════════════════════════════════════════════════════════ */

/* Skip link (a11y) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--ink);
  color: var(--paper);
  padding: var(--sp-3) var(--sp-4);
  z-index: 10000;
}
.skip-link:focus { top: 0; }

/* Mobile: fixed top bar */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  padding: 0 var(--sp-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  background: color-mix(in oklab, var(--paper) 90%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
  z-index: 100;
}

.topbar-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  height: 32px;
}
.topbar-logo img { height: 26px; width: auto; }
.topbar-logo .logo-light { display: block; }
.topbar-logo .logo-dark { display: none; }

/* Show dark logo in dark mode for topbar (dark background) */
@media (prefers-color-scheme: dark) {
  .topbar-logo .logo-light { display: none; }
  .topbar-logo .logo-dark { display: block; }
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* GitHub star pill */
.gh-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 10px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--ink);
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.gh-pill:hover { background: var(--paper-3); border-color: var(--ink-4); }
.gh-pill .star { color: var(--accent); }

/* Hamburger */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.nav-toggle:hover { background: var(--paper-2); border-color: var(--ink-4); }
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: var(--ink);
  border-radius: 1px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav sheet (slides down) */
.mobile-nav {
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  padding: var(--sp-5) var(--sp-4) var(--sp-6);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), visibility var(--dur);
  z-index: 99;
  max-height: calc(100vh - var(--nav-h));
  overflow-y: auto;
}
.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}
.mobile-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}
.mobile-nav a {
  display: block;
  padding: var(--sp-3) var(--sp-4);
  font-family: 'Inter', sans-serif;
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--ink);
  border-radius: var(--radius);
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.mobile-nav a:hover,
.mobile-nav a[aria-current="true"] {
  background: var(--paper-2);
  color: var(--accent);
}
.mobile-nav-lang {
  margin-top: var(--sp-5);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--rule);
}
.mobile-nav-lang-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 12px;
  font-weight: 500;
}
.mobile-nav-lang a {
  display: block;
  padding: 7px 0 7px 12px;
  margin-left: -12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.mobile-nav-lang a:hover {
  color: var(--accent);
}
.mobile-nav-lang a.active {
  color: var(--accent);
  border-left-color: var(--accent);
}
.mobile-nav-cta {
  margin-top: var(--sp-5);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

/* Backdrop */
.nav-backdrop {
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: var(--overlay);
  z-index: 98;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur);
}
.nav-backdrop.open { opacity: 1; visibility: visible; }

/* Desktop sidebar — hidden on mobile */
.sidebar { display: none; }

/* ═══════════════════════════════════════════════════════════
   LAYOUT PRIMITIVES
   ═══════════════════════════════════════════════════════════ */

.main {
  padding-top: var(--nav-h);
  padding-bottom: var(--sticky-h);   /* room for mobile sticky CTA */
}

.section {
  padding: var(--section-y) var(--section-x);
  border-bottom: 1px solid var(--rule);
}
.section:last-child { border-bottom: none; }
.section.dark {
  background: var(--ink);
  color: var(--paper);
}
.section.dark .eyebrow { color: var(--accent); }

.section-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.section-head { margin-bottom: var(--sp-7); }
.section-head h2 {
  font-family: 'Instrument Serif', serif;
  font-size: var(--fs-h2);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.05;
  margin-top: var(--sp-4);
  max-width: 22ch;
}
.section-head p.lead {
  font-size: var(--fs-lead);
  color: var(--ink-2);
  margin-top: var(--sp-5);
  max-width: 62ch;
  line-height: 1.5;
}
.section.dark .section-head p.lead { color: var(--accent-2); }

/* Grid utilities */
.grid { display: grid; gap: var(--sp-5); }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }
.grid-5 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .grid-5 { grid-template-columns: repeat(5, 1fr); }
}

/* ═══════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 14px 22px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
  min-height: 48px;                    /* accessible tap target */
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: var(--ink);
  border-color: var(--accent);
}
.btn-primary:hover { box-shadow: 0 6px 24px -8px var(--accent); }

.btn-secondary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn-secondary:hover { background: var(--ink-2); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule);
}
.btn-ghost:hover { border-color: var(--ink); background: var(--paper-2); }

.btn-full { width: 100%; }
.btn-lg { padding: 18px 28px; font-size: 0.875rem; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
}
.cta-row .btn { flex: 1 1 auto; min-width: 200px; }

/* ═══════════════════════════════════════════════════════════
   01 · HERO
   ═══════════════════════════════════════════════════════════ */

.hero {
  padding: var(--sp-9) var(--section-x) var(--sp-8);
  position: relative;
}
.hero-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-7);
}
.hero-headline {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: var(--fs-hero);
  line-height: 0.98;
  letter-spacing: -0.025em;
  margin-top: var(--sp-4);
  max-width: 20ch;
}
.hero-headline em {
  color: var(--accent);
  font-style: italic;
}
.hero-sub {
  font-size: var(--fs-lead);
  color: var(--ink-2);
  margin-top: var(--sp-5);
  max-width: 54ch;
  line-height: 1.5;
}

/* Stats card (below content on mobile, right column on desktop) */
.hero-stats {
  background: var(--ink);
  color: var(--paper);
  padding: var(--sp-6);
  border-radius: var(--radius-lg);
  margin-top: var(--sp-6);
}
.hero-stats-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: var(--sp-5);
}
.hero-stats-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--sp-3) var(--sp-5);
  align-items: baseline;
  font-size: 1rem;
  line-height: 1.4;
}
.hero-stats-list .num {
  font-family: 'Instrument Serif', serif;
  font-size: 1.75rem;
  color: var(--accent);
  line-height: 1;
}

/* Install snippet */
.terminal {
  margin-top: var(--sp-6);
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.terminal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-4);
  background: var(--ink-2);
  border-bottom: 1px solid var(--glass-subtle);
}
.terminal-head-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 6px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: 4px;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  min-height: 32px;
}
.copy-btn:hover { background: var(--glass-subtle); border-color: var(--glass-border); }
.copy-btn.copied { color: var(--accent-2); border-color: var(--accent-2); }
.terminal pre {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  line-height: 1.7;
  padding: var(--sp-4) var(--sp-5);
  overflow-x: auto;
  white-space: pre;
  color: var(--paper);
}
.terminal pre .prompt { color: var(--accent); user-select: none; }
.terminal pre .comment { color: var(--ink-4); }

/* Hero grid @ desktop */
@media (min-width: 960px) {
  .hero-inner {
    grid-template-columns: 1.6fr 1fr;
    gap: var(--sp-7);
    align-items: start;
  }
  .hero-content { grid-column: 1; }
  .hero-side    { grid-column: 2; }
  .hero-stats   { margin-top: 0; }
  .terminal     { grid-column: 1 / -1; }
}

/* ═══════════════════════════════════════════════════════════
   02 · WHY NOW — 3 pillars
   ═══════════════════════════════════════════════════════════ */

.pillar {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.pillar.dark {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.pillar-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  font-weight: 500;
}
.pillar .big-num {
  color: inherit;
  margin: var(--sp-2) 0;
}
.pillar.dark .big-num { color: var(--paper); }
.pillar-body {
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--ink-2);
  font-weight: 500;
}
.pillar.dark .pillar-body { color: var(--paper); }
.pillar-detail {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--ink-3);
}
.pillar.dark .pillar-detail { color: var(--accent-2); }
.pillar-source {
  margin-top: auto;
  padding-top: var(--sp-4);
  border-top: 1px solid var(--rule);
}
.pillar.dark .pillar-source { border-color: var(--ink-3); color: var(--ink-4); }

@media (min-width: 960px) {
  #why-now .grid-3 { grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
}

/* ═══════════════════════════════════════════════════════════
   03 · PLATFORM STACK (vertical accordion on mobile, layers on desktop)
   ═══════════════════════════════════════════════════════════ */

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-top: var(--sp-6);
}
.stack-layer {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-2);
  padding: var(--sp-5);
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
@media (prefers-color-scheme: dark) {
  .stack-layer { background: var(--paper-2); }
}
.stack-layer:hover {
  transform: translateX(4px);
  box-shadow: -4px 0 0 var(--accent);
}
.stack-layer.surface {
  background: var(--accent-soft);
  border-color: var(--accent-2);
}
.stack-layer.foundation {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
}
.stack-layer.foundation:hover { box-shadow: -4px 0 0 var(--ink); }

.stack-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--ink-3);
  font-weight: 600;
}
.stack-layer.surface .stack-label { color: var(--accent-ink); }
.stack-layer.foundation .stack-label { color: var(--ink); }

.stack-title {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.5rem, 1vw + 1.25rem, 2.25rem);
  line-height: 1;
  letter-spacing: -0.015em;
}
.stack-desc {
  font-size: var(--fs-body);
  color: var(--ink-2);
  line-height: 1.5;
}
.stack-layer.surface .stack-desc { color: var(--ink-2); }
.stack-layer.foundation .stack-desc { color: var(--ink); font-weight: 500; }

@media (min-width: 720px) {
  .stack-layer {
    grid-template-columns: 140px 220px 1fr;
    align-items: center;
    gap: var(--sp-5);
    padding: var(--sp-4) var(--sp-6);
  }
}

/* ═══════════════════════════════════════════════════════════
   04 · MODULES
   ═══════════════════════════════════════════════════════════ */

.tier-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin: var(--sp-7) 0 var(--sp-4);
}
.tier-label:first-child { margin-top: 0; }

/* Card grid — swipe carousel on mobile, grid on desktop */
.module-track {
  display: flex;
  gap: var(--sp-4);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: var(--sp-2) 0 var(--sp-5);
  margin: 0 calc(-1 * var(--section-x));
  padding-left: var(--section-x);
  padding-right: var(--section-x);
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.module-track::-webkit-scrollbar { display: none; }
.module-card {
  flex: 0 0 82%;
  scroll-snap-align: start;
  min-width: 260px;
  max-width: 340px;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

@media (min-width: 640px) {
  .module-track {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    overflow: visible;
    margin: 0;
    padding: 0;
  }
  .module-card { flex: none; max-width: none; }
}
@media (min-width: 960px) {
  #modules .module-track.live { grid-template-columns: repeat(5, 1fr); }
  #modules .module-track.roadmap { grid-template-columns: repeat(5, 1fr); }
}

@media (prefers-color-scheme: dark) {
  .module-card { background: var(--paper-2); }
}
.module-card:hover {
  transform: translateY(-4px);
  border-color: var(--ink-4);
  box-shadow: 0 12px 32px -12px var(--shadow);
}

.module-status {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  font-weight: 600;
}
.module-status.live { color: var(--good); }
.module-status.roadmap { color: var(--ink-4); }
.module-status .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
}
.module-status.roadmap .dot {
  background: transparent;
  border: 1.5px solid currentColor;
}

.module-name {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.75rem, 1vw + 1.5rem, 2.25rem);
  line-height: 1;
}
.module-name .brand { color: var(--accent); }

.module-tagline {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.35;
}
.module-desc {
  font-size: 0.875rem;
  color: var(--ink-3);
  line-height: 1.55;
}

.module-why {
  margin-top: auto;
  padding-top: var(--sp-4);
  border-top: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.module-why-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
}
.module-why-text {
  font-size: 0.8125rem;
  color: var(--ink-2);
  line-height: 1.45;
}
.module-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--accent-ink);
  font-weight: 600;
  padding-top: var(--sp-2);
}
.module-link:hover { color: var(--accent); }

/* Roadmap tiles — smaller variant */
.module-card.roadmap-tile {
  background: var(--paper-2);
  border-color: transparent;
  gap: var(--sp-2);
}
.module-card.roadmap-tile.dark {
  background: var(--ink);
  color: var(--paper);
}
.module-card.roadmap-tile.dark .module-desc { color: var(--accent-2); }
.module-card.roadmap-tile.dark .module-tagline { color: var(--paper); }

/* Carousel scroll hint (mobile) */
.scroll-hint {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink-4);
  padding-top: var(--sp-3);
}
@media (min-width: 640px) { .scroll-hint { display: none; } }

/* ═══════════════════════════════════════════════════════════
   05 · OPEN SOURCE (3 principle cards)
   ═══════════════════════════════════════════════════════════ */

.principle {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
@media (prefers-color-scheme: dark) {
  .principle { background: var(--paper-2); }
}
.principle.featured {
  background: var(--accent-soft);
  border-color: var(--accent-2);
}
.principle-num {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(3.5rem, 4vw + 1rem, 6rem);
  line-height: 0.9;
  color: var(--accent);
}
.principle-title {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.5rem, 1.5vw + 1rem, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.principle-body {
  font-size: 1rem;
  color: var(--ink-2);
  line-height: 1.55;
}

/* ═══════════════════════════════════════════════════════════
   06 · SOVEREIGN — 2 column feature list + quote panel
   ═══════════════════════════════════════════════════════════ */

.sovereign-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
  align-items: start;
}
@media (min-width: 960px) {
  .sovereign-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-8); }
}

.feature-list { display: flex; flex-direction: column; gap: var(--sp-5); }
.feature-item { display: grid; grid-template-columns: 24px 1fr; gap: var(--sp-3); align-items: start; }
.feature-item .arrow {
  color: var(--accent);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.4;
}
.feature-title {
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--ink);
  margin-bottom: var(--sp-2);
}
.feature-desc {
  font-size: 0.9375rem;
  color: var(--ink-3);
  line-height: 1.55;
}

.quote-panel {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}
.quote-panel-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
}
.quote-panel-text {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.5rem, 2vw + 1rem, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.quote-panel-text em { color: var(--accent); font-style: italic; }
.quote-panel-detail {
  font-size: 1rem;
  color: var(--accent-2);
  line-height: 1.55;
  padding-top: var(--sp-4);
  border-top: 1px solid var(--ink-3);
}

/* ═══════════════════════════════════════════════════════════
   07 · SOLUTIONS — vertical cards
   ═══════════════════════════════════════════════════════════ */

.vertical-card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
@media (prefers-color-scheme: dark) {
  .vertical-card { background: var(--paper-2); }
}
.vertical-card.dark {
  background: var(--ink);
  color: var(--paper);
}
.vertical-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
}
.vertical-title {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.75rem, 1.5vw + 1rem, 2.5rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
}
.vertical-desc {
  font-size: 1rem;
  color: var(--ink-3);
  line-height: 1.55;
}
.vertical-card.dark .vertical-desc { color: var(--accent-2); }

.vertical-bundle {
  margin-top: auto;
  padding-top: var(--sp-4);
  border-top: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.vertical-card.dark .vertical-bundle { border-color: var(--ink-3); }
.vertical-bundle-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--accent);
}
.vertical-bundle-list {
  font-family: 'Instrument Serif', serif;
  font-size: 1.375rem;
  color: inherit;
}

/* ═══════════════════════════════════════════════════════════
   08 · SERVICES — 4 pricing cards
   ═══════════════════════════════════════════════════════════ */

.service-card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  min-height: 100%;
}
@media (prefers-color-scheme: dark) {
  .service-card { background: var(--paper-2); }
}
.service-card.featured {
  background: var(--accent-soft);
  border-color: var(--accent);
  border-width: 2px;
  position: relative;
}
.service-card.featured::before {
  content: 'RECOMMENDED';
  position: absolute;
  top: -10px;
  left: var(--sp-5);
  background: var(--accent);
  color: var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 4px 10px;
  border-radius: 4px;
}
.service-card.dark {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.service-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  font-weight: 500;
}
.service-card.dark .service-label { color: var(--accent-2); }
.service-card.featured .service-label { color: var(--accent-ink); }

.service-price {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2rem, 2vw + 1rem, 3rem);
  line-height: 1;
  letter-spacing: -0.015em;
}
.service-tag {
  font-size: 1rem;
  color: var(--ink-2);
  line-height: 1.5;
}
.service-card.dark .service-tag { color: var(--accent-2); }

.service-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--rule);
  font-size: 0.9375rem;
  color: var(--ink-2);
  line-height: 1.5;
}
.service-card.dark .service-features { color: var(--paper); border-color: var(--ink-3); }
.service-features li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: var(--sp-2);
  align-items: baseline;
}
.service-features li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 600;
}

.service-card .btn { margin-top: auto; }

@media (min-width: 960px) {
  #services .grid-4 { grid-template-columns: repeat(4, 1fr); align-items: stretch; }
}

/* ═══════════════════════════════════════════════════════════
   09 · CONTACT — dark final CTA
   ═══════════════════════════════════════════════════════════ */

#contact .hero-headline { max-width: 22ch; }
#contact .hero-sub { color: var(--accent-2); max-width: 56ch; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-5);
  padding-top: var(--sp-6);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.footer-links a { color: var(--accent-2); transition: color var(--dur-fast) var(--ease); }
.footer-links a:hover { color: var(--paper); }

.footer-meta {
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--ink-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  font-size: 0.8125rem;
  color: var(--ink-4);
}
.footer-meta .mono { font-size: 0.75rem; letter-spacing: 0.06em; }

/* ═══════════════════════════════════════════════════════════
   MOBILE STICKY CTA BAR
   ═══════════════════════════════════════════════════════════ */

.sticky-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--sticky-h);
  padding: var(--sp-2) var(--sp-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  background: color-mix(in oklab, var(--paper) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--rule);
  z-index: 90;
  transform: translateY(0);
  transition: transform var(--dur) var(--ease);
}
.sticky-cta.hidden { transform: translateY(100%); }
.sticky-cta-msg {
  font-size: 0.8125rem;
  color: var(--ink-2);
  font-weight: 500;
  line-height: 1.2;
  flex: 1;
  min-width: 0;
}
.sticky-cta .btn { padding: 10px 14px; font-size: 0.75rem; min-height: 44px; }

@media (min-width: 960px) {
  .sticky-cta { display: none; }
  .main { padding-bottom: 0; }
}

/* ═══════════════════════════════════════════════════════════
   DESKTOP SIDEBAR — only for wide viewports
   ═══════════════════════════════════════════════════════════ */

@media (min-width: 1200px) {
  .topbar { display: none; }
  .sidebar {
    display: flex;
    position: fixed;
    top: 0; left: 0;
    width: 240px;
    height: 100vh;
    background: var(--ink);
    z-index: 100;
    flex-direction: column;
    padding: var(--sp-6) 0;
    overflow-y: auto;
  }
  .sidebar-brand {
    padding: 0 var(--sp-6) var(--sp-5);
    border-bottom: 1px solid var(--ink-3);
    margin-bottom: var(--sp-4);
  }
  .sidebar-brand img { height: 32px; width: auto; }
  .sidebar-brand .logo-dark { display: block; }
  .sidebar-brand .logo-light { display: none; }

  /* Show light logo in dark mode for sidebar (light background) */
  @media (prefers-color-scheme: dark) {
    .sidebar-brand .logo-dark { display: none; }
    .sidebar-brand .logo-light { display: block; }
  }
  .sidebar-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: var(--sp-2) 0;
  }
  .sidebar-nav a {
    display: block;
    padding: 10px var(--sp-6);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6875rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-4);
    border-left: 2px solid transparent;
    transition: all var(--dur-fast) var(--ease);
  }
  .sidebar-nav a:hover {
    color: var(--paper);
    background: var(--glass-hover);
    padding-left: calc(var(--sp-6) + 4px);
  }
  .sidebar-nav a[aria-current="true"] {
    color: var(--accent);
    border-left-color: var(--accent);
    background: var(--accent-bg);
  }
  .sidebar-footer {
    padding: var(--sp-5) var(--sp-6);
    border-top: 1px solid var(--ink-3);
    margin-top: auto;
  }
  .sidebar-footer-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.625rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-4);
    margin-bottom: 12px;
    font-weight: 500;
  }
  .sidebar-footer a {
    display: block;
    padding: 7px 0 7px 12px;
    margin-left: -12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6875rem;
    letter-spacing: 0.04em;
    color: var(--ink-4);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  }
  .sidebar-footer a:hover {
    color: var(--paper);
  }
  .sidebar-footer a.active {
    color: var(--accent);
    border-left-color: var(--accent);
  }
  .main { padding-left: 240px; padding-top: 0; }
  .hero { padding-top: var(--sp-10); }
}

/* ═══════════════════════════════════════════════════════════
   FAQ-SPECIFIC STYLES
   ═══════════════════════════════════════════════════════════ */

/* ── Header ── */
.header {
  background: var(--ink);
  color: var(--paper);
  padding: 60px 20px 80px;
  text-align: center;
  position: relative;
}
.header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent);
}

/* ── Language Switcher ── */
.lang-switcher {
  position: absolute;
  top: 20px;
  right: 20px;
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  z-index: 10;
}
.lang-switcher a,
.lang-switcher span {
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--paper);
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
  opacity: 0.5;
}
.lang-switcher a:hover {
  opacity: 0.9;
  color: var(--accent);
  background: var(--glass-subtle);
}
.lang-switcher .active {
  opacity: 1;
  color: var(--accent);
  background: var(--accent-soft-2);
  font-weight: 600;
}
.header h1 {
  font-family: 'Instrument Serif', serif;
  font-size: 2.5rem;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  line-height: 1.1;
}
.header p {
  font-size: 1.15rem;
  color: var(--accent-2);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.5;
}
.header .subtitle {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  padding: 4px 14px;
  border: 1px solid var(--accent);
  border-radius: 20px;
}
.header .last-updated {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink-4);
  margin-top: 16px;
  letter-spacing: 0.02em;
}

/* ── Design Draft Badge ── */
.design-draft-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--warn);
  background: var(--warn-bg);
  border: 1px solid var(--warn);
  border-radius: 4px;
  padding: 6px 14px;
  margin-top: 16px;
}
.design-draft-badge::before {
  content: '⚠';
  font-size: 1rem;
}

/* ── Container ── */
.container {
  max-width: 960px;
  margin: -50px auto 0;
  padding: 0 20px 60px;
  position: relative;
}

/* ── Breadcrumbs ── */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.breadcrumbs a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s;
}
.breadcrumbs a:hover {
  color: var(--accent-ink);
}
.breadcrumbs .sep {
  color: var(--ink-4);
}

/* ── Suite Grid ── */
.suite-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 30px;
}
.suite-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 16px;
  transition: all 0.2s;
  text-align: center;
  text-decoration: none;
  color: inherit;
}
.suite-card:hover {
  box-shadow: 0 4px 16px var(--shadow-sm);
  border-color: var(--accent);
  transform: translateY(-2px);
}
.suite-card .card-icon {
  font-family: 'Instrument Serif', serif;
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 8px;
  font-weight: 400;
}
.suite-card h3 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.125rem;
  color: var(--ink);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.suite-card p {
  font-size: 0.8125rem;
  color: var(--ink-3);
  line-height: 1.4;
}

/* ── TOC ── */
.toc {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 30px;
  margin-bottom: 30px;
}
.toc h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 16px;
  font-weight: 600;
}
.toc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 8px;
}
.toc a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  color: var(--ink);
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.9375rem;
  transition: all 0.15s;
}
.toc a:hover {
  background: var(--hover);
  color: var(--accent);
  transform: translateX(4px);
}
.toc a .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--accent);
  color: var(--ink);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  font-family: 'JetBrains Mono', monospace;
}

/* ── Search Box ── */
.search-box {
  position: relative;
  margin-bottom: 30px;
}
.search-box input {
  width: 100%;
  padding: 16px 20px 16px 50px;
  font-size: 1rem;
  font-family: 'Inter', sans-serif;
  border: 2px solid var(--rule);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  transition: border-color 0.2s;
  outline: none;
}
.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft-2);
}
.search-box input::placeholder {
  color: var(--ink-4);
}
.search-box::before {
  content: '⌕';
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  color: var(--ink-4);
}

/* ── Controls ── */
.controls {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.controls button {
  padding: 8px 16px;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  font-family: 'Inter', sans-serif;
  color: var(--ink);
  transition: all 0.15s;
}
.controls button:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--hover);
}

/* ── FAQ Sections (scoped to FAQ pages) ── */
.container > .section {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 30px;
  margin-bottom: 24px;
}
.section-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--rule);
}
.section-header .icon {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  flex-shrink: 0;
}
.section-header h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.75rem;
  color: var(--ink);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.1;
}
.section-header .count {
  background: var(--accent-soft);
  color: var(--accent-ink);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.02em;
}

/* ── FAQ Items ── */
.faq-item {
  border-bottom: 1px solid var(--rule);
  transition: background 0.15s;
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 0;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: 'Inter', sans-serif;
  transition: color 0.15s;
  line-height: 1.4;
}
.faq-question:hover {
  color: var(--accent);
}
.faq-question .toggle {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  background: var(--hover);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  transition: transform 0.25s;
  font-family: 'JetBrains Mono', monospace;
}
.faq-item.open .toggle {
  transform: rotate(45deg);
  background: var(--accent);
  color: var(--ink);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
}
.faq-item.open .faq-answer {
  max-height: 5000px;
}
.faq-answer-inner {
  padding: 0 0 20px;
  font-size: 0.9375rem;
  color: var(--ink-2);
  line-height: 1.65;
}
.faq-answer-inner p {
  margin-bottom: 12px;
}
.faq-answer-inner p:last-child {
  margin-bottom: 0;
}
.faq-answer-inner ul,
.faq-answer-inner ol {
  margin: 8px 0 12px 24px;
}
.faq-answer-inner li {
  margin-bottom: 6px;
}
.faq-answer-inner strong {
  color: var(--ink);
  font-weight: 600;
}
.faq-answer-inner code {
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875em;
  color: var(--accent-ink);
}

/* ── Tables ── */
.faq-answer-inner table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 0.875rem;
}
.faq-answer-inner th,
.faq-answer-inner td {
  padding: 8px 12px;
  text-align: left;
  border: 1px solid var(--rule);
}
.faq-answer-inner th {
  background: var(--paper);
  font-weight: 600;
  color: var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Callouts ── */
.callout {
  padding: 14px 16px;
  border-radius: 6px;
  margin: 12px 0;
  border-left: 4px solid;
}
.callout.tip {
  background: var(--good-soft);
  border-color: var(--good);
}
.callout.warning {
  background: var(--warn-soft);
  border-color: var(--warn);
}
.callout.info {
  background: var(--accent-soft);
  border-color: var(--accent);
}
.callout strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
}
.callout.tip strong { color: var(--good); }
.callout.warning strong { color: var(--warn); }
.callout.info strong { color: var(--accent-ink); }

/* ── No Results ── */
.no-results {
  text-align: center;
  padding: 40px;
  color: var(--ink-3);
  display: none;
  font-size: 1rem;
}

/* ── Footer ── */
.footer {
  text-align: center;
  padding: 40px 20px;
  color: var(--ink-3);
  font-size: 0.875rem;
}
.footer strong {
  color: var(--ink);
  font-weight: 600;
}
.footer a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s;
}
.footer a:hover {
  color: var(--accent-ink);
}

/* ── FAQ Responsive ── */
@media (max-width: 640px) {
  .header h1 { font-size: 1.8rem; }
  .header p { font-size: 1rem; }
  .container > .section { padding: 20px; }
  .toc { padding: 20px; }
  .container { padding: 0 12px 40px; }
  .suite-grid { grid-template-columns: repeat(2, 1fr); }
  .section-header h2 { font-size: 1.375rem; }
}

/* ── Print ── */
@media print {
  .header { background: var(--paper); color: var(--ink); }
  .header::after { display: none; }
  .search-box, .controls, .breadcrumbs { display: none; }
  .container > .section { break-inside: avoid; }
  .faq-answer { max-height: none !important; }
  .faq-item.open .toggle { transform: none; }
}