:root {
  --bg: #151b22;
  --surface: #1e2630;
  --line: #2c3642;
  --text: #f3f1ee;
  --muted: #b7bec7;
  --accent: #e0332f;
  --accent-soft: rgba(224, 51, 47, 0.14);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

.top {
  display: flex;
  justify-content: flex-end;
  max-width: 1040px;
  margin: 0 auto;
  padding: 16px;
}

.lang {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 14px;
}

.lang:hover, .lang:focus-visible { color: var(--text); border-color: var(--muted); }

main { max-width: 1040px; margin: 0 auto; padding: 0 16px 48px; }

.hero { text-align: center; padding: 24px 0 40px; }

.logo { width: 160px; height: 160px; border-radius: 36px; }

h1 {
  margin: 20px 0 0;
  font-size: clamp(44px, 9vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 6px 0 0;
  font-size: clamp(19px, 3.2vw, 24px);
  color: var(--muted);
}

.badge {
  display: inline-block;
  margin: 22px 0 0;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #ffb4b1;
  border: 1px solid rgba(224, 51, 47, 0.45);
  font-size: 15px;
  font-weight: 600;
}

.lead {
  max-width: 640px;
  margin: 24px auto 0;
  font-size: 19px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.features article {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 14px;
  padding: 18px 20px;
}

.features h2 { margin: 0 0 6px; font-size: 19px; }

.features p { margin: 0; color: var(--muted); font-size: 16px; }

.note {
  max-width: 720px;
  margin: 40px auto 0;
  text-align: center;
  color: var(--muted);
}

.en {
  max-width: 720px;
  margin: 48px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.en h2 { font-size: 20px; margin: 0 0 8px; }

.en p { color: var(--muted); }

.en strong { color: var(--text); }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  padding: 24px 16px 40px;
  border-top: 1px solid var(--line);
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}