/* QALab marketing — same --qa-* tokens as packages/web (v2 light) */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --qa-bg-base: #f8f7f4;
  --qa-bg-surface: #ffffff;
  --qa-bg-elevated: #f3f2ee;
  --qa-accent-green: #0d9488;
  --qa-accent-green-hover: #0f766e;
  --qa-accent-blue: #2563eb;
  --qa-accent-amber: #d97706;
  --qa-accent-red: #dc2626;
  --qa-accent-soft: color-mix(in srgb, #0d9488 12%, transparent);
  --qa-accent-border: color-mix(in srgb, #0d9488 28%, transparent);
  --qa-text-primary: #1e293b;
  --qa-text-secondary: #475569;
  --qa-text-muted: #64748b;
  --qa-border: #e2e8f0;
  --qa-border-active: #99f6e4;
  --qa-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --qa-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --qa-shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.08);
  --qa-font-ui: "Source Sans 3", system-ui, -apple-system, sans-serif;
  --qa-font-mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", monospace;
  --qa-radius: 10px;
  --qa-space-2: 8px;
  --qa-space-3: 12px;
  --qa-space-4: 16px;
  --qa-space-5: 24px;
  --qa-space-6: 32px;
  --qa-space-8: 48px;
  --ibd-success: #15803d;
  --ibd-success-soft: #f0fdf4;
  --ibd-success-border: #bbf7d0;
  --ibd-info: #1d4ed8;
  --ibd-info-soft: #eff6ff;
  --ibd-info-border: #bfdbfe;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--qa-font-ui);
  background: var(--qa-bg-base);
  color: var(--qa-text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--qa-accent-green); text-decoration: none; }
a:hover { color: var(--qa-accent-green-hover); text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3, h4 {
  color: var(--qa-text-primary);
  line-height: 1.25;
  font-weight: 700;
}

code, .mono { font-family: var(--qa-font-mono); font-size: 0.875em; }

::selection {
  background: color-mix(in srgb, var(--qa-accent-green) 22%, transparent);
}

:focus-visible {
  outline: 2px solid var(--qa-accent-green);
  outline-offset: 2px;
}

.page {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 var(--qa-space-5) var(--qa-space-8);
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--qa-border);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  margin-bottom: var(--qa-space-6);
}

.site-header__inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.75rem var(--qa-space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--qa-space-4);
  flex-wrap: wrap;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--qa-text-primary);
  text-decoration: none;
}

.site-header__brand:hover {
  color: var(--qa-accent-green);
  text-decoration: none;
}

.site-header__brand .status-dot { margin-left: 2px; }

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  flex-wrap: wrap;
}

.site-nav__links a {
  display: block;
  padding: 0.45rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--qa-text-secondary);
  border-radius: var(--qa-radius);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.site-nav__links a:hover,
.site-nav__links a.is-active {
  color: var(--qa-accent-green);
  background: var(--qa-accent-soft);
  text-decoration: none;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.back-link {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--qa-text-muted);
}

.lang-switch {
  display: flex;
  border: 1px solid var(--qa-border);
  border-radius: var(--qa-radius);
  overflow: hidden;
  background: var(--qa-bg-surface);
}

.lang-switch button {
  font-family: var(--qa-font-ui);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 0.55rem;
  border: none;
  background: transparent;
  color: var(--qa-text-muted);
  cursor: pointer;
}

.lang-switch button.is-active {
  background: var(--qa-accent-soft);
  color: var(--qa-accent-green);
}

.badge-live {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--ibd-success-soft);
  color: var(--ibd-success);
  border: 1px solid var(--ibd-success-border);
}

.badge-dev {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: color-mix(in srgb, var(--qa-accent-amber) 12%, #fff);
  color: var(--qa-accent-amber);
  border: 1px solid color-mix(in srgb, var(--qa-accent-amber) 35%, transparent);
  flex-shrink: 0;
}

.section__title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.section__title-row .section__title {
  margin-bottom: 0;
}

.dev-notice {
  margin-top: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--qa-radius);
  font-size: 0.875rem;
  color: var(--qa-text-secondary);
  background: color-mix(in srgb, var(--qa-accent-amber) 8%, var(--qa-bg-surface));
  border: 1px dashed color-mix(in srgb, var(--qa-accent-amber) 35%, var(--qa-border));
}

.section--dev .arion-grid {
  opacity: 0.88;
}

.module-card--planned {
  border-style: dashed;
  background: var(--qa-bg-elevated);
}

.arch-node--dev {
  border-style: dashed;
  opacity: 0.85;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  background: var(--qa-bg-surface);
  border: 1px solid var(--qa-border);
  border-radius: var(--qa-radius);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: var(--qa-text-secondary);
  border-radius: 1px;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--qa-accent-green);
  flex-shrink: 0;
}

/* ── Panels & buttons ── */
.hud-panel {
  background: var(--qa-bg-surface);
  border: 1px solid var(--qa-border);
  border-radius: var(--qa-radius);
  box-shadow: var(--qa-shadow-sm);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.hud-panel:hover {
  border-color: color-mix(in srgb, var(--qa-border) 70%, var(--qa-accent-green) 30%);
  box-shadow: var(--qa-shadow-md);
}

.qa-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  background: var(--qa-accent-green);
  color: #fff;
  font-family: var(--qa-font-ui);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  border-radius: var(--qa-radius);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease;
}

.qa-btn-primary:hover {
  background: var(--qa-accent-green-hover);
  text-decoration: none;
  color: #fff;
}

.qa-btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5625rem 1.1875rem;
  background: var(--qa-bg-surface);
  color: var(--qa-text-primary);
  font-family: var(--qa-font-ui);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--qa-border);
  border-radius: var(--qa-radius);
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.qa-btn-outline:hover {
  border-color: var(--qa-border-active);
  background: var(--qa-accent-soft);
  text-decoration: none;
  color: var(--qa-text-primary);
}

.qa-section-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--qa-text-muted);
}

.qa-section-label--accent { color: var(--qa-accent-green); }

/* ── Hero ── */
.hero-panel {
  padding: var(--qa-space-6);
  margin-bottom: var(--qa-space-6);
}

.hero-panel__pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  margin-bottom: var(--qa-space-4);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--qa-accent-green);
  background: var(--qa-accent-soft);
  border: 1px solid var(--qa-accent-border);
}

.hero-panel h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.hero-panel__tagline {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--qa-accent-green);
  margin-bottom: 0.75rem;
}

.hero-panel__lead {
  font-size: 1rem;
  color: var(--qa-text-secondary);
  max-width: 42rem;
  margin-bottom: var(--qa-space-5);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--qa-space-3);
  margin-bottom: var(--qa-space-5);
}

.stat-chip {
  padding: 0.65rem 1rem;
  background: var(--qa-bg-elevated);
  border: 1px solid var(--qa-border);
  border-radius: var(--qa-radius);
  min-width: 6.5rem;
}

.stat-chip__value {
  display: block;
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--qa-accent-green);
  line-height: 1.2;
}

.stat-chip__label {
  font-size: 0.8125rem;
  color: var(--qa-text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: var(--qa-space-4);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
}

.tag-list li {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  color: var(--qa-text-secondary);
  background: var(--qa-bg-elevated);
  border: 1px solid var(--qa-border);
}

/* ── Sections ── */
.section {
  margin-bottom: var(--qa-space-6);
}

.section__header {
  margin-bottom: var(--qa-space-4);
}

.section__title {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  margin-bottom: 0.35rem;
}

.section__subtitle {
  font-size: 0.9375rem;
  color: var(--qa-text-secondary);
  max-width: 40rem;
}

.grid {
  display: grid;
  gap: var(--qa-space-3);
}

.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--6 { grid-template-columns: repeat(3, 1fr); }

/* Module cards (like app hub) */
.module-card {
  padding: var(--qa-space-4);
  background: var(--qa-bg-surface);
  border: 1px solid var(--qa-border);
  border-radius: var(--qa-radius);
  transition: border-color 0.18s, box-shadow 0.18s;
}

.module-card:hover {
  border-color: var(--qa-border-active);
  box-shadow: var(--qa-shadow-sm);
}

.module-card__route {
  display: inline-block;
  font-family: var(--qa-font-mono);
  font-size: 0.6875rem;
  color: var(--qa-text-muted);
  margin-bottom: 0.5rem;
}

.module-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.module-card p {
  font-size: 0.8125rem;
  color: var(--qa-text-secondary);
  line-height: 1.45;
}

.pillar-card {
  padding: var(--qa-space-5);
  text-align: center;
}

.pillar-card__icon {
  font-size: 1.5rem;
  margin-bottom: 0.65rem;
}

.pillar-card h3 {
  font-size: 0.9375rem;
  margin-bottom: 0.35rem;
}

.pillar-card p {
  font-size: 0.875rem;
  color: var(--qa-text-secondary);
}

/* Architecture flow */
.arch-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: var(--qa-space-5);
}

.arch-node {
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.55rem 0.85rem;
  border-radius: var(--qa-radius);
  background: var(--qa-bg-elevated);
  border: 1px solid var(--qa-border);
  color: var(--qa-text-secondary);
}

.arch-node--accent {
  background: var(--qa-accent-soft);
  border-color: var(--qa-accent-border);
  color: var(--qa-accent-green);
}

.arch-arrow {
  color: var(--qa-text-muted);
  font-size: 0.875rem;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--qa-space-3);
}

.step-card {
  padding: var(--qa-space-5);
  counter-increment: qastep;
}

.step-card::before {
  content: counter(qastep, decimal-leading-zero);
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--qa-accent-green);
  margin-bottom: 0.5rem;
}

.steps { counter-reset: qastep; }

.step-card h3 {
  font-size: 0.9375rem;
  margin-bottom: 0.35rem;
}

.step-card p {
  font-size: 0.875rem;
  color: var(--qa-text-secondary);
}

/* Download CTA */
.download-panel {
  padding: var(--qa-space-6);
  text-align: center;
}

.download-panel h2 {
  font-size: 1.375rem;
  margin-bottom: 0.65rem;
}

.download-panel > p {
  color: var(--qa-text-secondary);
  max-width: 32rem;
  margin: 0 auto var(--qa-space-5);
}

.download-panel .hero-actions {
  justify-content: center;
  margin-bottom: var(--qa-space-4);
}

.download-links {
  display: flex;
  justify-content: center;
  gap: var(--qa-space-5);
  flex-wrap: wrap;
}

.download-links a {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--qa-text-muted);
}

.download-links a:hover { color: var(--qa-accent-green); }

/* Footer */
.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--qa-space-4);
  padding-top: var(--qa-space-5);
  margin-top: var(--qa-space-6);
  border-top: 1px solid var(--qa-border);
}

.site-footer p {
  font-size: 0.8125rem;
  color: var(--qa-text-muted);
}

.site-footer a {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--qa-text-secondary);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .grid--3, .grid--6, .steps { grid-template-columns: 1fr 1fr; }
  .grid--2 { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-toggle { display: flex; }

  .site-nav__links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.5rem;
  }

  .site-header.is-open .site-nav__links { display: flex; }

  .back-link { display: none; }

  .hero-panel { padding: var(--qa-space-5); }

  .grid--3, .grid--6, .grid--2, .steps { grid-template-columns: 1fr; }

  .arch-flow { flex-direction: column; }
}

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