:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --text: #1b1d22;
  --muted: #5d6270;
  --line: #e3e1da;
  --accent: #2f5bd3;
  --accent-soft: #e8eefc;
  --radius: 14px;
  --max: 920px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #111317;
    --surface: #181b21;
    --text: #eceef2;
    --muted: #a1a7b3;
    --line: #2a2e37;
    --accent: #8fb0ff;
    --accent-soft: #1d2638;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header / nav */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.brand { font-weight: 700; letter-spacing: -0.01em; color: var(--text); text-decoration: none; font-size: 18px; }
.nav { display: flex; gap: 20px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav a:hover, .nav a[aria-current='page'] { color: var(--text); }

/* Type */
h1 { font-size: clamp(34px, 6vw, 52px); line-height: 1.1; letter-spacing: -0.025em; margin: 0 0 16px; }
h2 { font-size: 24px; letter-spacing: -0.015em; margin: 0 0 18px; }
h3 { font-size: 18px; margin: 0 0 4px; }
p { margin: 0 0 14px; }
.lead { font-size: 20px; color: var(--muted); max-width: 640px; }
.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }

section { padding: 56px 0; border-top: 1px solid var(--line); }
.hero { padding: 72px 0 56px; border-top: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 999px;
  background: var(--text); color: var(--bg); text-decoration: none; font-weight: 600; font-size: 15px;
}
.btn.secondary { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn[aria-disabled='true'] { opacity: 0.6; pointer-events: none; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 6px; color: var(--text); text-decoration: none;
}
a.card:hover { border-color: var(--accent); }
.card .icon { width: 52px; height: 52px; border-radius: 12px; background: #05060f; padding: 4px; margin-bottom: 8px; }
.card .placeholder-icon { width: 52px; height: 52px; border-radius: 12px; background: var(--accent-soft); margin-bottom: 8px; }
.tag { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); align-self: flex-start; margin-top: auto; }

/* Timeline */
.timeline { list-style: none; margin: 0; padding: 0; display: grid; gap: 22px; }
.timeline li { display: grid; grid-template-columns: 120px 1fr; gap: 16px; }
.timeline .when { color: var(--muted); font-size: 15px; padding-top: 1px; }
.timeline p { margin: 2px 0 0; color: var(--muted); }
@media (max-width: 560px) {
  .timeline li { grid-template-columns: 1fr; gap: 2px; }
}

/* Prose (privacy) */
.prose { max-width: 680px; }
.prose h2 { font-size: 20px; margin-top: 36px; }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 6px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.site-footer a { color: var(--muted); }

/* ---------- Prism Keep (dark, neon) ---------- */
.pk {
  --bg: #05060f;
  --surface: #0c0f1f;
  --text: #e9f3ff;
  --muted: #93a3c4;
  --line: #1c2340;
  --accent: #7ef5ec;
  --accent-soft: #10223a;
  color-scheme: dark;
}
.pk .hero { text-align: center; padding-top: 56px; }
.pk .hero .app-icon { width: 120px; height: 120px; margin: 0 auto 20px; filter: drop-shadow(0 0 24px rgba(126, 245, 236, 0.35)); }
.pk .hero .lead { margin: 0 auto; }
.pk .hero .actions { justify-content: center; }
.pk .btn { background: linear-gradient(90deg, #7ef5ec, #a79bff); color: #05060f; }
.pk .btn.secondary { background: transparent; color: var(--text); border-color: var(--line); }
.shots {
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(200px, 240px);
  gap: 14px; overflow-x: auto; padding: 4px 4px 16px; scroll-snap-type: x mandatory;
}
.shots img { width: 100%; height: auto; border-radius: 16px; border: 1px solid var(--line); scroll-snap-align: start; aspect-ratio: 540 / 1198; object-fit: cover; }
.features { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.feature h3 { color: var(--accent); }
.feature p { color: var(--muted); margin: 0; font-size: 15px; }
.facts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; justify-content: center; }
.facts span { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: 14px; color: var(--muted); }