:root {
  color-scheme: light;
  --ink: #16223a;
  --muted: #5f6b80;
  --violet: #6b5cf6;
  --violet-dark: #4437b9;
  --coral: #f06e5d;
  --paper: #ffffff;
  --wash: #f5f3ff;
  --border: #ddd8fa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 0%, rgba(107, 92, 246, 0.16), transparent 34rem),
    linear-gradient(180deg, #fbfaff 0%, var(--wash) 100%);
  color: var(--ink);
  font-family: ui-rounded, "SF Pro Rounded", "Avenir Next", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 72px;
}

nav { margin-bottom: 40px; }
nav a, footer a { margin-right: 18px; }

.eyebrow {
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 10px 0 16px;
  font-size: clamp(2.3rem, 9vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

h2 { margin-top: 2rem; line-height: 1.2; }
h3 { margin-bottom: 0.35rem; }
p { color: var(--muted); }
a { color: var(--violet-dark); font-weight: 750; }

.lead { max-width: 650px; font-size: 1.2rem; }

.card, .notice {
  margin: 24px 0;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 16px 44px rgba(42, 33, 95, 0.08);
}

.notice { border-left: 5px solid var(--coral); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.grid .card { margin: 0; }
ul { padding-left: 1.25rem; color: var(--muted); }
li + li { margin-top: 0.4rem; }
footer { margin-top: 50px; padding-top: 24px; border-top: 1px solid var(--border); }

@media (max-width: 620px) {
  main { padding-top: 36px; }
  .grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}