:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --ink: #1a1614;
  --muted: #6b655e;
  --accent: #c2410c;
  --accent-soft: #fdf2eb;
  --border: #ebe6df;
  --shadow-sm: 0 1px 2px rgba(26, 22, 20, 0.04);
  --shadow-md: 0 10px 30px -10px rgba(26, 22, 20, 0.12), 0 2px 6px rgba(26, 22, 20, 0.04);
  --radius: 16px;
  --radius-lg: 24px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv11', 'ss01', 'ss03';
}
@supports (font-variation-settings: normal) {
  html, body { font-family: 'Inter var', sans-serif; }
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { text-decoration: underline; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* Top nav */
.top-nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 24px;
  font-size: 13px;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.top-back { color: var(--ink); font-weight: 500; }
.top-back:hover { color: var(--accent); text-decoration: none; }
.top-meta { letter-spacing: .02em; }

/* Header */
.site-header { padding: 56px 0 32px; }
.chip-row { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .01em;
}
.chip-muted {
  background: var(--surface);
  color: var(--muted);
  border: 1px solid var(--border);
}
.site-header h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
}
.lede {
  margin: 0;
  font-size: 17px;
  color: var(--muted);
  max-width: 640px;
  line-height: 1.55;
}

/* Demo grid */
.demo-grid {
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
  gap: 56px;
  padding: 32px 24px 80px;
  align-items: start;
}
@media (max-width: 860px) {
  .demo-grid { grid-template-columns: 1fr; gap: 32px; }
}

.phone-column {
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  position: sticky; top: 24px;
}
@media (max-width: 860px) { .phone-column { position: static; } }

/* Flow toggle */
.flow-toggle {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  box-shadow: var(--shadow-sm);
}
.flow-btn {
  border: 0; background: transparent;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
  transition: all .15s;
}
.flow-btn:hover { color: var(--ink); }
.flow-btn.is-active {
  background: var(--ink);
  color: #fff;
}

/* Screen card */
.screen-card {
  margin: 0;
  width: 280px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.screen-canvas {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  background: #f0ece6;
  aspect-ratio: 252 / 520;
}
.screen-canvas img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: opacity .2s ease;
  user-select: none; -webkit-user-drag: none;
}
.hotspot-layer { position: absolute; inset: 0; pointer-events: none; }
.hotspot {
  position: absolute;
  border: 0;
  background: transparent;
  border-radius: 8px;
  cursor: pointer;
  pointer-events: auto;
  transition: background .2s, box-shadow .2s, transform .15s;
}
.hotspot.is-primary {
  box-shadow: 0 0 0 2px rgba(194, 65, 12, 0.5);
  animation: a-pulse 2s ease-out infinite;
}
.hotspot:hover {
  background: rgba(194, 65, 12, 0.12);
  box-shadow: 0 0 0 2px var(--accent);
}
.hotspot:active { transform: scale(.98); }
.hotspot::after {
  content: attr(data-label);
  position: absolute;
  bottom: -28px; left: 50%;
  transform: translateX(-50%);
  background: var(--ink); color: #fff;
  font-size: 11px; font-weight: 500;
  padding: 4px 8px; border-radius: 6px;
  white-space: nowrap; opacity: 0;
  transition: opacity .15s;
  pointer-events: none;
}
.hotspot:hover::after { opacity: 1; }

@keyframes a-pulse {
  0% { box-shadow: 0 0 0 2px rgba(194, 65, 12, 0.5), 0 0 0 0 rgba(194, 65, 12, 0.4); }
  70% { box-shadow: 0 0 0 2px rgba(194, 65, 12, 0.5), 0 0 0 12px rgba(194, 65, 12, 0); }
  100% { box-shadow: 0 0 0 2px rgba(194, 65, 12, 0.5), 0 0 0 0 rgba(194, 65, 12, 0); }
}
@media (prefers-reduced-motion: reduce) {
  .hotspot.is-primary { animation: none; }
  .screen-canvas img { transition: none; }
}

.screen-caption {
  margin: 12px 4px 4px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* Nav */
.nav-row {
  display: flex; align-items: center; gap: 12px;
  width: 100%; max-width: 280px;
}
.nav-btn {
  flex: 1;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: all .15s;
}
.nav-btn:hover:not(:disabled) {
  border-color: var(--ink);
}
.nav-btn:disabled { opacity: .35; cursor: not-allowed; }
.nav-btn.primary {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.nav-btn.primary:hover:not(:disabled) {
  background: var(--accent);
  border-color: var(--accent);
}
.screen-indicator {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 13px;
  min-width: 52px;
  text-align: center;
}
.link-btn {
  background: transparent; border: 0;
  color: var(--muted);
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  padding: 4px 8px;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.link-btn:hover { color: var(--accent); }

/* Info card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.card h2 {
  margin: 0 0 12px;
  font-size: 1.625rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.card p { margin: 0 0 20px; color: var(--ink); }

.meta-list {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 10px 20px;
  margin: 24px 0;
  font-size: 14px;
}
.meta-list dt {
  color: var(--muted);
  font-weight: 500;
}
.meta-list dd { margin: 0; color: var(--ink); }

.cta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 28px; }
.cta {
  display: inline-flex; align-items: center;
  background: var(--ink); color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  transition: background .15s;
}
.cta:hover { background: var(--accent); text-decoration: none; color: #fff; }
.cta.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border);
}
.cta.secondary:hover { border-color: var(--ink); background: var(--surface); color: var(--ink); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}
.site-footer p { margin: 0; }
.site-footer a { color: var(--ink); font-weight: 500; }