:root {
  color-scheme: light dark;
  --bg: #07111f;
  --surface: #101f33;
  --text: #f5f8fc;
  --muted: #b9c5d4;
  --accent: #70d6c3;
  --accent-strong: #36bca4;
  --border: #263b55;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 85% 0%, rgba(54, 188, 164, .18), transparent 34rem),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--accent); }
a:hover { color: #a1eadc; }

.shell { width: min(920px, calc(100% - 40px)); margin: 0 auto; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
}

.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; }
.brand img { width: 44px; height: 44px; border-radius: 12px; }
.brand strong { font-size: 1.05rem; }
nav { display: flex; flex-wrap: wrap; gap: 18px; }
nav a { color: var(--muted); text-decoration: none; }

main { padding: 52px 0 80px; }
.hero { max-width: 720px; padding: 56px 0; }
.eyebrow { color: var(--accent); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1 { max-width: 800px; margin: 10px 0 20px; font-size: clamp(2.35rem, 7vw, 4.75rem); line-height: 1.02; }
h2 { margin: 42px 0 12px; line-height: 1.2; }
p, li { color: var(--muted); }
.lead { font-size: 1.18rem; }
.button {
  display: inline-flex;
  margin-top: 16px;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--accent-strong);
  color: #04100d;
  font-weight: 750;
  text-decoration: none;
}

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card, .notice {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(16, 31, 51, .82);
}
.card h2 { margin-top: 0; font-size: 1.1rem; }
.notice { border-color: var(--accent-strong); }
.legal { max-width: 760px; }
.legal h1 { font-size: clamp(2.2rem, 6vw, 3.6rem); }
.meta { color: var(--accent); }

footer { border-top: 1px solid var(--border); padding: 28px 0 44px; color: var(--muted); }

@media (max-width: 720px) {
  header { align-items: flex-start; flex-direction: column; }
  .grid { grid-template-columns: 1fr; }
  main { padding-top: 24px; }
}

@media (prefers-color-scheme: light) {
  :root { --bg: #f5f8fc; --surface: #fff; --text: #0c1929; --muted: #45566b; --border: #d7e0ea; }
  body { background: radial-gradient(circle at 85% 0%, rgba(54, 188, 164, .16), transparent 34rem), var(--bg); }
  .card, .notice { background: rgba(255, 255, 255, .88); }
}