:root {
  color-scheme: dark;
  --background: #07111f;
  --panel: #0d1a2a;
  --line: #1d384b;
  --text: #f5f8fb;
  --muted: #a6b5c3;
  --accent: #55c39b;
}

* { box-sizing: border-box; }
html { background: var(--background); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif; }
body { color: var(--text); margin: 0; line-height: 1.75; }
a { color: #87ddbe; }
.shell { margin: 0 auto; max-width: 880px; padding: 0 24px; }
.compact { padding-top: 18vh; }
.site-header { border-bottom: 1px solid var(--line); }
.header-row, .footer-row { align-items: center; display: flex; justify-content: space-between; min-height: 68px; }
.brand { color: var(--text); font-size: 1.2rem; font-weight: 800; text-decoration: none; }
.hero { padding-bottom: 48px; padding-top: 64px; }
.eyebrow { color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { font-size: clamp(2.25rem, 7vw, 4rem); letter-spacing: -.04em; line-height: 1.15; margin: 12px 0 20px; }
h2 { font-size: 1.5rem; line-height: 1.4; margin: 0 0 18px; }
h3 { font-size: 1.05rem; margin: 0 0 8px; }
p { margin: 0 0 16px; }
.lead { color: var(--muted); font-size: 1.08rem; max-width: 660px; }
.section { padding-bottom: 56px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.card p, .muted { color: var(--muted); }
.notice { background: #10291f; border: 1px solid #276c52; border-radius: 14px; color: #c9f3e3; margin-top: 28px; padding: 18px; }
.button-link { background: var(--accent); border-radius: 12px; color: #04140e; display: inline-block; font-weight: 800; padding: 11px 16px; text-decoration: none; }
.site-footer { border-top: 1px solid var(--line); color: var(--muted); }
.site-footer p { margin: 0; }
.policy dt { font-weight: 800; }
.policy dd { color: var(--muted); margin: 0 0 18px; }
.skip-link { background: white; color: black; left: 12px; padding: 8px; position: absolute; top: -100px; }
.skip-link:focus { top: 12px; }

@media (max-width: 520px) {
  .hero { padding-top: 44px; }
  .footer-row { align-items: flex-start; flex-direction: column; gap: 8px; justify-content: center; padding-bottom: 16px; padding-top: 16px; }
}