:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #07110f;
  color: #edf8f3;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 4%, rgba(48, 182, 132, .2), transparent 34rem),
    radial-gradient(circle at 88% 28%, rgba(55, 111, 172, .14), transparent 32rem),
    #07110f;
}

a { color: inherit; }

.shell { width: min(72rem, calc(100% - 2rem)); margin: 0 auto; }

header {
  position: sticky;
  top: 0;
  z-index: 2;
  border-bottom: 1px solid rgba(219, 244, 233, .12);
  background: rgba(7, 17, 15, .88);
  backdrop-filter: blur(16px);
}

nav { min-height: 4.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { font-weight: 760; letter-spacing: .08em; text-decoration: none; }
.nav-links { display: flex; flex-wrap: wrap; gap: .35rem; }
.nav-links a { padding: .55rem .8rem; border-radius: 999px; color: #a9c5ba; text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: #fff; background: rgba(219, 244, 233, .09); }

main { padding: 5.5rem 0 4rem; }
.eyebrow { color: #6be3b4; font-size: .78rem; font-weight: 760; letter-spacing: .14em; text-transform: uppercase; }
h1 { max-width: 15ch; margin: .8rem 0 1.2rem; font-size: clamp(2.5rem, 8vw, 5.8rem); line-height: .98; letter-spacing: -.055em; }
h2 { margin: 0 0 .75rem; font-size: clamp(1.45rem, 3vw, 2.1rem); letter-spacing: -.025em; }
h3 { margin: 0 0 .5rem; }
p { color: #acc3ba; line-height: 1.7; }
.lead { max-width: 48rem; font-size: clamp(1.05rem, 2vw, 1.3rem); }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.button { display: inline-flex; padding: .8rem 1rem; border: 1px solid rgba(219, 244, 233, .16); border-radius: .75rem; text-decoration: none; background: rgba(219, 244, 233, .07); }
.button.primary { color: #07110f; background: #6be3b4; border-color: #6be3b4; font-weight: 740; }

.notice { margin: 3rem 0; padding: 1.2rem 1.35rem; border: 1px solid rgba(107, 227, 180, .32); border-radius: 1rem; background: rgba(107, 227, 180, .06); }
.notice strong { color: #8ef0c9; }
.notice p { margin: .35rem 0 0; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; margin-top: 1.4rem; }
.card { padding: 1.35rem; border: 1px solid rgba(219, 244, 233, .12); border-radius: 1rem; background: rgba(219, 244, 233, .035); }
.card p:last-child { margin-bottom: 0; }
.section { padding: 3rem 0; border-top: 1px solid rgba(219, 244, 233, .1); }
.plain-list { padding-left: 1.2rem; color: #acc3ba; line-height: 1.8; }

footer { padding: 2rem 0 3rem; border-top: 1px solid rgba(219, 244, 233, .1); color: #789488; }
footer .shell { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; }

@media (max-width: 42rem) {
  nav { align-items: flex-start; flex-direction: column; padding: 1rem 0; }
  main { padding-top: 3.5rem; }
}