:root {
  color-scheme: light;
  --bg: #fbfbf9; --bg2: #f2f2ee; --panel: #ffffff; --text: #141416; --muted: #63636a; --line: #e5e5e0;
  --accent: #0a66d8; --accent2: #5b3fd8; --accent-soft: #e9f1fd;
  --ok: #137333; --ok-bg: #e6f4ea; --warn: #9a5b00; --warn-bg: #fff3dc;
  --shadow: 0 1px 2px rgba(20, 20, 22, .04), 0 8px 30px rgba(20, 20, 22, .07);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0e0f11; --bg2: #15161a; --panel: #18191d; --text: #ececee; --muted: #a0a0a8; --line: #2a2b30;
    --accent: #6aa8ff; --accent2: #a48bff; --accent-soft: #172539;
    --ok: #8fe0a8; --ok-bg: #12351f; --warn: #ffb74d; --warn-bg: #33270f;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 40px rgba(0, 0, 0, .35);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e0f11; --bg2: #15161a; --panel: #18191d; --text: #ececee; --muted: #a0a0a8; --line: #2a2b30;
  --accent: #6aa8ff; --accent2: #a48bff; --accent-soft: #172539;
  --ok: #8fe0a8; --ok-bg: #12351f; --warn: #ffb74d; --warn-bg: #33270f;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 40px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
h1, h2, h3 { letter-spacing: -.02em; line-height: 1.15; margin: 0; }
h2 { font-size: clamp(26px, 3.4vw, 36px); margin-bottom: 28px; }

.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 20px; border-radius: 12px; border: 0; background: var(--text); color: var(--bg); font: inherit; font-weight: 600; cursor: pointer; white-space: nowrap; }
.btn:hover { opacity: .9; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.small { padding: 7px 12px; font-size: 14px; border-radius: 9px; }

/* nav */
.nav { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; gap: 24px; height: 60px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); }
.nav-links { display: flex; gap: 20px; }
.nav-links a { color: var(--muted); font-size: 15px; }
.nav-links a:hover { color: var(--text); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.lang-select select { border: 1px solid var(--line); background: var(--bg); color: var(--text); border-radius: 8px; padding: 5px 6px; font: 13px inherit; cursor: pointer; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.soon-banner { max-width: 1120px; margin: 16px auto 0; padding: 12px 18px; border-radius: 12px; background: var(--warn-bg); color: var(--warn); font-size: 14px; }
@media (max-width: 1150px) { .soon-banner { margin: 16px 24px 0; } }
.theme-switch { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.theme-switch button { border: 0; background: transparent; color: var(--muted); padding: 5px 8px; cursor: pointer; font-size: 13px; line-height: 1; }
.theme-switch button.on { background: var(--bg2); color: var(--text); }

/* hero */
.hero { padding: 80px 0 56px; background: radial-gradient(1000px 420px at 85% -10%, var(--accent-soft), transparent 70%); }
.hero-in { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.eyebrow { margin: 0 0 14px; font-size: 13px; font-weight: 600; letter-spacing: .04em; color: var(--accent); }
.hero h1 { font-size: clamp(36px, 5.4vw, 60px); margin-bottom: 20px; }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; max-width: 34em; }
.waitlist { display: flex; gap: 8px; max-width: 480px; }
.waitlist input { flex: 1; min-width: 0; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); color: var(--text); font: inherit; }
.waitlist input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.form-note { font-size: 13px; color: var(--muted); margin: 10px 0 0; }
.form-note.ok { color: var(--ok); }
.form-note.err { color: #c5221f; }

.hero-demo { display: grid; gap: 12px; }
.demo-q { display: flex; gap: 10px; align-items: baseline; padding: 14px 16px; border-radius: 14px; background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow); font-weight: 600; }
.demo-label { white-space: nowrap; flex-shrink: 0; font-size: 11px; font-weight: 700; color: #fff; background: var(--accent); padding: 2px 7px; border-radius: 6px; }
.demo-card { padding: 16px 18px; border-radius: 14px; background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow); font-size: 15px; }
.demo-card p { margin: 8px 0; }
.demo-head { display: flex; gap: 6px; }
.pill { font-size: 12px; padding: 2px 9px; border-radius: 999px; background: var(--bg2); color: var(--muted); font-weight: 600; }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }
.pill.google { color: #188038; }
:root[data-theme="dark"] .pill.google { color: #5bc27a; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .pill.google { color: #5bc27a; } }
.demo-cite { font-size: 13.5px; padding: 8px 12px; border-left: 3px solid var(--accent); background: var(--bg2); border-radius: 0 8px 8px 0; color: var(--muted); }
.demo-cite b { color: var(--text); }

/* stats */
.stats { padding: 28px 0 8px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg2); }
.stats-in { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stats b { display: block; font-size: 32px; letter-spacing: -.02em; }
.stats span { color: var(--muted); font-size: 14px; }
.src { font-size: 12px; color: var(--muted); margin-top: 14px; padding-bottom: 14px; }

/* features */
.features, .how, .faq { padding: 88px 0 24px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature { padding: 22px; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); }
.feature h3 { font-size: 18px; margin: 12px 0 8px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.feature p { color: var(--muted); margin: 0; font-size: 15px; }
.feature .metric { margin-top: 14px; color: var(--text); font-size: 14px; }
.feature .metric span:first-child { font-weight: 700; color: var(--accent); }
.icon { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 18px; }
.feature.soon { background: transparent; border-style: dashed; }
.badge { font-size: 11px; font-weight: 700; padding: 2px 7px; border-radius: 6px; background: var(--bg2); color: var(--muted); letter-spacing: 0; }

/* how */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: s; }
.steps li { counter-increment: s; padding: 22px; border-radius: 16px; border: 1px solid var(--line); background: var(--panel); }
.steps li::before { content: counter(s); display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--text); color: var(--bg); font-weight: 700; font-size: 14px; margin-bottom: 12px; }
.steps b { display: block; margin-bottom: 6px; }
.steps span { color: var(--muted); font-size: 15px; }

/* trust */
.trust { padding: 64px 0 0; }
.trust-in { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; padding: 36px 24px; border-radius: 20px; background: linear-gradient(135deg, var(--accent-soft), transparent); border: 1px solid var(--line); }
.trust h3 { font-size: 17px; margin-bottom: 8px; }
.trust p { color: var(--muted); margin: 0; font-size: 15px; }

/* faq */
.faq .wrap { max-width: 780px; }
details { border-bottom: 1px solid var(--line); padding: 16px 0; }
summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::after { content: "+"; color: var(--muted); font-weight: 400; }
details[open] summary::after { content: "–"; }
details p { color: var(--muted); margin: 10px 0 0; }

.final { padding: 88px 0; }
.final-in { display: flex; flex-direction: column; align-items: center; gap: 20px; text-align: center; }
.final h2 { margin: 0; }

.foot { border-top: 1px solid var(--line); padding: 24px 0 40px; font-size: 13px; color: var(--muted); }
.foot-in { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

@media (max-width: 900px) {
  .hero { padding: 48px 0 40px; }
  .hero-in { grid-template-columns: 1fr; gap: 36px; }
  .grid, .steps, .trust-in { grid-template-columns: 1fr; }
  .stats-in { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .waitlist { flex-direction: column; }
  .nav-right .btn { display: none; }
  .stats b { font-size: 26px; }
}