:root {
  color-scheme: dark;
  --ink: #f5f2ff;
  --muted: #b4b1c5;
  --line: #39324e;
  --panel: #171424;
  --accent: #b9a0ff;
  --accent-strong: #7c5cff;
  --accent-soft: #29213f;
  --page: #090811;
}

* { box-sizing: border-box; }
html { font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif; background: var(--page); color: var(--ink); }
body { margin: 0; background: radial-gradient(circle at 90% 4%, #271c49 0, transparent 32%), var(--page); }
a { color: var(--accent); }
.shell { width: min(920px, calc(100% - 32px)); margin: 0 auto; }
header { padding: 28px 0 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 850; letter-spacing: .08em; }
.mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; color: white; background: linear-gradient(145deg, #bd4cff, #615cff); box-shadow: 0 0 24px #8f5dff66; font-size: 18px; }
main { padding: 20px 0 64px; }
.hero { padding: clamp(28px, 7vw, 68px); border: 1px solid var(--line); border-radius: 28px; background: radial-gradient(circle at 92% 8%, #4d246b 0, transparent 36%), var(--panel); box-shadow: 0 22px 54px #0008; }
.kicker { margin: 0 0 12px; color: var(--accent); font-weight: 800; letter-spacing: .15em; font-size: 13px; }
h1 { margin: 0; font-size: clamp(34px, 7vw, 62px); line-height: 1.08; letter-spacing: -.045em; }
.lead { max-width: 680px; margin: 22px 0 0; color: var(--muted); font-size: 18px; line-height: 1.8; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; min-height: 48px; align-items: center; padding: 0 18px; border-radius: 14px; background: linear-gradient(135deg, #9a5cff, var(--accent-strong)); color: white; text-decoration: none; font-weight: 750; }
.button.secondary { color: var(--accent); background: var(--accent-soft); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 22px; }
.card, .policy { padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: #14111fdd; }
.card h2, .policy h2 { margin-top: 0; font-size: 20px; }
.card p, .policy p, .policy li { color: var(--muted); line-height: 1.75; }
.policy { max-width: 820px; margin: 0 auto; }
.policy h1 { font-size: clamp(32px, 6vw, 48px); }
.policy h2 { margin-top: 34px; color: var(--ink); }
.notice { padding: 16px 18px; border-radius: 14px; background: var(--accent-soft); color: var(--ink) !important; }
.error-page { min-height: 75vh; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; }
.error-page .button { margin-top: 28px; }
footer { padding: 24px 0 42px; color: var(--muted); font-size: 13px; }
footer .shell { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } .hero { border-radius: 22px; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; } }