:root {
  --bg: #0b1020; --surface: #141a2e; --surface-2: #1b2238; --text: #e3e6f2; --muted: #b9c0d8;
  --primary: #9db7ff; --accent: #ffd66b; --green: #7fd8a6; --line: #2a3350;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background-image: radial-gradient(1200px 600px at 80% -10%, #1f2f6b55, transparent);
}
a { color: var(--primary); }
img { max-width: 100%; height: auto; }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: 1100px; margin: 0 auto; padding: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.2rem; }
.brand img { border-radius: 8px; }
nav { display: flex; gap: 18px; }
nav a { color: var(--muted); text-decoration: none; white-space: nowrap; }
nav a:hover { color: var(--text); }
main { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.15; margin: 0 0 16px; }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); line-height: 1.25; margin: 0 0 12px; }
.accent { color: var(--accent); }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 36em; }
.small { font-size: .9rem; color: var(--muted); }
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; padding: 32px 0 56px; }
.hero-shot { text-align: center; }
.shot { display: block; border-radius: 22px; border: 1px solid var(--line); box-shadow: 0 20px 50px #0008; background: var(--surface); }
.phone { width: 100%; max-width: 300px; margin: 0 auto; }
.cta { margin: 24px 0 8px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.privacy-note .cta { justify-content: center; }
.button {
  display: inline-block; padding: 14px 24px; border-radius: 999px; font-weight: 700; text-decoration: none;
  background: var(--primary); color: #0b1330;
}
.button:hover { filter: brightness(1.08); }
.button.disabled { background: var(--surface-2); color: var(--muted); border: 1px solid var(--line); cursor: default; }
.button.secondary { background: transparent; color: var(--green); border: 1px solid var(--green); }
.alpha { padding: 56px 0; border-top: 1px solid var(--line); }
.alpha .lead { margin-bottom: 8px; }
.steps { list-style: none; padding: 0; margin: 24px 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.steps li { display: flex; gap: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 18px; }
.steps p { color: var(--muted); margin: 6px 0 14px; font-size: .95rem; }
.step-num { flex: none; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  background: var(--primary); color: #0b1330; font-weight: 700; }
.steps .button { padding: 10px 18px; font-size: .95rem; }
.changes { list-style: none; padding: 0; }
.changes li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.changes li p { margin: 6px 0 0; color: var(--muted); }
.tag { display: inline-block; min-width: 76px; margin-right: 10px; padding: 1px 8px; border-radius: 6px; font-size: .8rem;
  font-weight: 700; text-align: center; background: var(--surface-2); color: var(--muted); }
.tag-new { background: #1d3a2c; color: var(--green); }
.tag-improved { background: #26356b; color: var(--primary); }
.tag-fix { background: #4a3a14; color: var(--accent); }
.release h2 .small { font-weight: 400; }
.feature { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; align-items: center; padding: 56px 0; border-top: 1px solid var(--line); }
.feature.reverse .text { order: 2; }
.feature ul { padding-left: 1.2em; color: var(--muted); }
.feature li { margin: 6px 0; }
.shots { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
.shots .phone { max-width: 260px; }
.privacy-note { text-align: center; padding: 56px 0 64px; border-top: 1px solid var(--line); }
.privacy-note p { max-width: 40em; margin: 0 auto; color: var(--muted); }
footer { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; border-top: 1px solid var(--line); color: var(--muted); }
footer p { margin: 6px 0; }
.doc { max-width: 820px; padding-bottom: 48px; }
.doc h1 { font-size: 2rem; }
.doc h2 { font-size: 1.35rem; margin-top: 32px; }
.doc table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: .95rem; display: block; overflow-x: auto; }
.doc th, .doc td { border: 1px solid var(--line); padding: 10px; text-align: left; vertical-align: top; }
.doc th { background: var(--surface-2); }
.doc code { background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
@media (max-width: 800px) {
  .hero, .feature { grid-template-columns: 1fr; gap: 24px; }
  .feature.reverse .text { order: 0; }
  .steps { grid-template-columns: 1fr; }
  .hero { padding-top: 8px; }
  .hero-shot .phone { max-width: 260px; }
}
@media (max-width: 420px) {
  body { font-size: 16px; }
  nav { gap: 14px; font-size: .9rem; }
  nav .nav-features { display: none; }
  .brand { font-size: 1.05rem; }
  .shots { gap: 10px; }
}