:root {
  color-scheme: light dark;
  --bg: #F8F9F7;
  --fg: #1E2937;
  --muted: #64748B;
  --primary: #10B981;
  --border: rgba(100,116,139,0.18);
  --card: #FFFFFF;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F172A;
    --fg: #F1F5F9;
    --muted: #94A3B8;
    --border: rgba(148,163,184,0.18);
    --card: #16213A;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
  text-decoration: none;
  color: var(--fg);
}

.brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
}

.brand span {
  font-weight: 700;
  font-size: 18px;
}

h1 {
  font-size: 28px;
  margin: 0 0 6px;
}

.updated {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 40px;
}

h2 {
  font-size: 19px;
  margin: 36px 0 12px;
  border-top: 1px solid var(--border);
  padding-top: 28px;
}

h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

p, li {
  color: var(--fg);
  font-size: 15px;
}

ul {
  padding-left: 20px;
}

a {
  color: var(--primary);
}

.card-list {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 24px;
  margin: 12px 0 24px;
}

.card-list ul {
  margin: 0;
}

.nav-links {
  display: flex;
  gap: 16px;
  margin-bottom: 8px;
}

footer {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}

.index-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 32px;
}

.index-links a {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  text-decoration: none;
  color: var(--fg);
  font-weight: 600;
}

.index-links a small {
  display: block;
  font-weight: 400;
  color: var(--muted);
  margin-top: 4px;
}

/* ── Landing page ─────────────────────────────────────────────────────── */

.hero-icon {
  width: 88px;
  height: 88px;
  border-radius: 22px;
  margin-bottom: 24px;
}

.cta-row {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 12px;
  width: 100%;
  max-width: 280px;
}

.cta-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  border: 1px solid var(--border);
}

.cta-button.primary {
  background: var(--primary);
  color: #06281D;
  border-color: transparent;
}

.cta-button.disabled {
  color: var(--muted);
  background: var(--card);
  cursor: default;
  pointer-events: none;
}

.cta-note {
  color: var(--muted);
  font-size: 13px;
  margin: 0;
}

/* ── Landing page split layout ───────────────────────────────────────────── */

.wrap.wrap-wide {
  max-width: 1100px;
}

.split {
  display: flex;
  align-items: center;
  gap: 56px;
  margin-bottom: 16px;
}

.carousel-col {
  flex: 1.15;
  min-width: 0;
}

.cta-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

@media (max-width: 860px) {
  .split {
    flex-direction: column;
    gap: 32px;
  }
  .cta-col {
    align-items: center;
    text-align: center;
    width: 100%;
  }
}

/* ── Onboarding carousel (mirrors app/demo.tsx) ──────────────────────────── */

.carousel-track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 24px;
  height: min(620px, 78vh);
}
.carousel-track::-webkit-scrollbar { display: none; }

.slide {
  flex: 0 0 100%;
  width: 100%;
  scroll-snap-align: start;
  padding: 28px 24px;
  overflow-y: auto;
  box-sizing: border-box;
}

.slide-icon {
  width: 56px;
  height: 56px;
  border-radius: 28px;
  background: rgba(16,185,129,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto 12px;
}

.slide-tag {
  display: block;
  text-align: center;
  color: var(--primary);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.slide h2 {
  font-size: 17px;
  text-align: center;
  margin: 0 0 8px;
  border: none;
  padding: 0;
}

.slide-desc {
  font-size: 12.5px;
  color: var(--muted);
  text-align: center;
  line-height: 1.5;
  margin: 0 0 18px;
}

.dots {
  display: flex;
  justify-content: center;
  gap: 5px;
  margin-top: 14px;
}
.dot {
  width: 6px;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  transition: width .2s, background .2s;
}
.dot.active {
  width: 20px;
  background: var(--primary);
}

/* shared mock-UI atoms */
.mock-card {
  background: var(--bg);
  border-radius: 14px;
  padding: 12px;
  border: 1px solid var(--border);
}
.mock-card.hl {
  border: 2px solid var(--primary);
}
.mock-row { display: flex; align-items: center; }
.mock-chip {
  display: flex; align-items: center; gap: 5px;
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.25);
  border-radius: 20px;
  padding: 5px 10px;
  font-size: 10.5px;
  font-weight: 600;
}
.mock-callout {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--primary);
  color: #06281D;
  border-radius: 20px;
  padding: 5px 10px;
  font-size: 10px;
  font-weight: 700;
  margin: 3px 4px 0 0;
}
.mock-toggle {
  width: 36px; height: 21px; border-radius: 11px;
  background: rgba(120,120,120,0.35);
  position: relative; flex-shrink: 0;
}
.mock-toggle.on { background: var(--primary); }
.mock-toggle .knob {
  position: absolute; top: 2px; left: 2px;
  width: 17px; height: 17px; border-radius: 9px;
  background: #fff;
}
.mock-toggle.on .knob { left: auto; right: 2px; }
.mock-setting {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0;
}
.mock-setting .ico {
  width: 26px; height: 26px; border-radius: 13px;
  background: rgba(16,185,129,0.1);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 13px;
}
.mock-setting .txt { flex: 1; min-width: 0; }
.mock-setting .txt b { display: block; font-size: 11.5px; }
.mock-setting .txt span { font-size: 9.5px; color: var(--muted); }
.mock-divider { height: 1px; background: var(--border); margin: 6px 0; }

/* slide 1: welcome grid */
.welcome-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.welcome-tile {
  background: rgba(16,185,129,0.07);
  border: 1px solid rgba(16,185,129,0.18);
  border-radius: 14px;
  padding: 10px;
}
.welcome-tile .emoji { font-size: 18px; display: block; margin-bottom: 4px; }
.welcome-tile b { display: block; font-size: 10.5px; margin-bottom: 2px; }
.welcome-tile span { font-size: 9.5px; color: var(--muted); line-height: 1.3; }

/* slide 3: chat bubbles */
.bubble-row { display: flex; margin-bottom: 6px; }
.bubble-row.me { justify-content: flex-end; }
.bubble {
  max-width: 85%;
  padding: 8px 12px;
  border-radius: 16px;
  font-size: 11px;
  line-height: 1.4;
}
.bubble.me { background: var(--primary); color: #06281D; border-bottom-right-radius: 4px; }
.bubble.ai { background: var(--card); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.bubble img { width: 100%; max-width: 150px; border-radius: 8px; display: block; margin-bottom: 6px; }
.macro-mini-row { display: flex; gap: 4px; margin: 6px 0; }
.macro-mini {
  flex: 1; text-align: center; background: var(--bg);
  border-radius: 8px; padding: 5px 2px;
}
.macro-mini b { display: block; font-size: 11px; }
.macro-mini span { font-size: 8.5px; color: var(--muted); }
.chat-divider {
  display: flex; align-items: center; gap: 8px;
  font-size: 9.5px; color: var(--muted); margin: 8px 0;
}
.chat-divider::before, .chat-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}
.input-bar {
  display: flex; align-items: center; gap: 8px;
  border: 2px solid var(--primary);
  border-radius: 22px;
  padding: 8px 12px;
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}
.input-bar .ico-pill {
  width: 22px; height: 22px; border-radius: 11px;
  background: rgba(16,185,129,0.12);
  border: 1.5px solid var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; flex-shrink: 0;
}
.input-bar .send {
  width: 24px; height: 24px; border-radius: 12px;
  background: var(--primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 11px;
}

/* slide 4: blueprint tabs */
.tab-row { display: flex; gap: 5px; margin-bottom: 10px; }
.tab {
  flex: 1; text-align: center; padding: 7px 2px;
  border-radius: 11px; border: 1.5px solid var(--border);
  font-size: 8.5px; font-weight: 700; color: var(--muted);
}
.tab .e { display: block; font-size: 13px; margin-bottom: 1px; }
.tab.active { background: var(--primary); border-color: var(--primary); color: #06281D; }
.checklist-item { display: flex; gap: 8px; margin-bottom: 6px; align-items: flex-start; }
.checklist-item .bullet {
  width: 5px; height: 5px; border-radius: 3px; background: var(--primary);
  margin-top: 5px; flex-shrink: 0;
}
.checklist-item span { font-size: 10.5px; line-height: 1.4; }

/* slide 5: macro cards */
.macro-grid-2x2 { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; margin-bottom: 10px; }
.macro-card-mock { border-radius: 14px; padding: 10px; border: 1px solid; }
.macro-card-mock .lbl { font-size: 9px; font-weight: 700; margin-bottom: 2px; }
.macro-card-mock .val { font-size: 18px; font-weight: 800; }
.macro-card-mock .tgt { font-size: 9px; color: var(--muted); margin-bottom: 6px; }
.macro-card-mock .track { height: 4px; border-radius: 3px; overflow: hidden; background: rgba(120,120,120,0.2); }
.macro-card-mock .track .fill { height: 100%; }
.macro-card-mock .pct { font-size: 8.5px; font-weight: 600; margin-top: 3px; }
.split-bar { display: flex; height: 9px; border-radius: 6px; overflow: hidden; margin-bottom: 8px; }
.split-legend { display: flex; gap: 12px; font-size: 9.5px; color: var(--muted); flex-wrap: wrap; }
.split-legend .sw { width: 7px; height: 7px; border-radius: 4px; display: inline-block; margin-right: 3px; }

/* slide 6: health chips */
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }