:root {
  --bg: #0B0B0F; --surface: #16161D; --raised: #1F1F28;
  --border: rgba(255,255,255,.08); --text: #F5F5F7; --muted: #A1A1AA;
  --accent: #4F8CFF; --radius: 16px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); line-height: 1.1; margin: .25em 0 .4em; }
h2 { font-size: 1.6rem; margin: 0 0 .6em; }
.note { color: var(--muted); font-size: .9rem; }
/* Long inline API names would otherwise force sideways scroll at 320px (Display Zoom). */
.note code { overflow-wrap: anywhere; }

.hero, main > section, footer { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 48px; align-items: center; padding-top: 72px; padding-bottom: 48px; }
.eyebrow { color: var(--accent); font-weight: 600; letter-spacing: .06em; text-transform: uppercase; font-size: .8rem; margin: 0; }
.lede { color: var(--muted); font-size: 1.1rem; max-width: 34em; }

.install { display: flex; align-items: center; gap: 8px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 8px 8px 8px 16px; margin: 24px 0 16px; max-width: 100%; }
.install code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; }
.install button { flex: none; background: var(--raised); color: var(--text); border: 0; border-radius: 8px; padding: 8px 14px; font: inherit; font-size: .9rem; cursor: pointer; }
.install button:hover { background: #2a2a35; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button { display: inline-block; padding: 12px 22px; border-radius: 12px; background: var(--raised); color: var(--text); text-decoration: none; font-weight: 600; }
.button.primary { background: var(--accent); color: #fff; }

/* Reserve the recording's aspect so the layout doesn't jump while it loads. */
.phone { justify-self: center; width: min(340px, 100%); }
.phone video { display: block; width: 100%; aspect-ratio: 540 / 1100; object-fit: cover; border-radius: 28px; border: 1px solid var(--border); background: var(--surface); }

main > section { padding-top: 56px; padding-bottom: 8px; }
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0 8px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; display: flex; flex-direction: column; gap: 4px; }
.stat .label { color: var(--muted); font-size: .9rem; }
.stat .value { font-size: 1.4rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat.accent { border-color: rgba(79,140,255,.45); }

.steps ol { padding-left: 1.2em; } .steps li { margin: .4em 0; }
.requirements ul { padding-left: 1.2em; }
pre { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; overflow-x: auto; font-size: .85rem; line-height: 1.5; }

footer { padding-top: 48px; padding-bottom: 48px; color: var(--muted); font-size: .9rem; }

@media (max-width: 760px) {
  .hero { grid-template-columns: minmax(0, 1fr); padding-top: 40px; gap: 32px; }
  .compare { grid-template-columns: 1fr; }
}