:root {
  --bg: #05060b;
  --surface: #0d0f18;
  --raised: #141726;
  --line: rgb(238 241 255 / 0.1);
  --fg: #eef1ff;
  --muted: rgb(222 226 255 / 0.64);
  --accent: #68e88a;
  --accent-ink: #05230f;
  --danger: #ff7a7a;
  --radius: 14px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f5f9;
    --surface: #ffffff;
    --raised: #eceef5;
    --line: rgb(18 20 43 / 0.12);
    --fg: #12142b;
    --muted: rgb(18 20 43 / 0.66);
    --accent: #1f9d4a;
    --accent-ink: #ffffff;
    --danger: #c62828;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* header + footer */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.01em; text-decoration: none; white-space: nowrap; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.foot { border-top: 1px solid var(--line); margin-top: 96px; padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.foot a { text-decoration: none; }
.foot a:hover { text-decoration: underline; text-underline-offset: 4px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 46px; padding: 0 20px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--raised); font-weight: 600; text-decoration: none; cursor: pointer;
  transition: transform .15s ease, background .15s ease, opacity .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: none; }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.btn-tiktok { background: var(--fg); color: var(--bg); border-color: transparent; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; transform: none; }
.btn-quiet { background: transparent; }
.btn svg { width: 18px; height: 18px; }

/* landing */
.hero { padding: 72px 0 40px; display: grid; gap: 48px; align-items: center; grid-template-columns: 1.1fr .9fr; }
.hero h1 { font-size: clamp(38px, 6vw, 64px); line-height: 1.04; letter-spacing: -0.035em; margin: 0 0 20px; font-weight: 650; }
.hero h1 em { font-style: normal; color: var(--accent); }
.lead { font-size: 19px; color: var(--muted); max-width: 52ch; margin: 0 0 32px; }
.note { color: var(--muted); font-size: 14px; margin-top: 14px; }
.alert { border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius); padding: 12px 16px; margin: 0 0 24px; font-size: 15px; }
.alert.err { border-color: color-mix(in srgb, var(--danger) 50%, transparent); }

.mock { position: relative; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); padding: 18px; box-shadow: 0 30px 80px -40px rgb(0 0 0 / .6); }
.mock-row { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 12px; background: var(--raised); margin-top: 10px; font-size: 14px; }
.mock-row b { font-weight: 600; }
.mock-row span { color: var(--muted); margin-left: auto; }
.mock-video { aspect-ratio: 16 / 10; border-radius: 14px; background:
  radial-gradient(120% 90% at 20% 10%, color-mix(in srgb, var(--accent) 35%, transparent), transparent 60%),
  radial-gradient(90% 90% at 90% 90%, rgb(124 111 205 / .35), transparent 60%), var(--raised); }
.dot { width: 26px; height: 26px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), #7c6fcd); flex: none; }

.section { padding: 56px 0 0; }
.section h2 { font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -0.02em; margin: 0 0 24px; font-weight: 650; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 0; margin: 0; list-style: none; counter-reset: s; }
.steps li { border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius); padding: 22px; counter-increment: s; }
.steps li::before { content: counter(s); display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--raised); font-weight: 600; margin-bottom: 14px; }
.steps h3 { margin: 0 0 6px; font-size: 18px; }
.steps p { margin: 0; color: var(--muted); }
.faq { display: grid; gap: 10px; }
.faq details { border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius); padding: 16px 20px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--muted); margin: 10px 0 0; }

/* legal */
.legal { max-width: 70ch; padding: 40px 0 0; }
.legal h1 { font-size: 36px; letter-spacing: -0.02em; margin: 0 0 6px; }
.legal h2 { font-size: 20px; margin: 32px 0 8px; }
.legal p, .legal li { color: var(--fg); }
.legal .updated { color: var(--muted); font-size: 14px; margin: 0 0 24px; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; gap: 32px; }
  .steps { grid-template-columns: 1fr; }
}