:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: rgba(16, 33, 51, 0.78);
  --panel-strong: #102133;
  --text: #effffb;
  --muted: #a9c4c0;
  --accent: #5bf0ce;
  --accent-soft: #9cffe4;
  --line: rgba(156, 255, 228, 0.16);
  --warning: #ffd58a;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 18% -10%, rgba(46, 230, 168, 0.20), transparent 34rem),
    radial-gradient(circle at 94% 18%, rgba(74, 126, 255, 0.16), transparent 30rem),
    var(--bg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 64px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 44px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
  font-size: 14px;
}

.nav-links a { text-decoration: none; }

.eyebrow {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1, h2, h3 {
  margin: 0;
  line-height: 1.18;
  letter-spacing: -.025em;
}

h1 {
  max-width: 760px;
  margin-top: 10px;
  font-size: clamp(38px, 7vw, 66px);
}

h2 { margin-top: 42px; font-size: clamp(24px, 4vw, 34px); }
h3 { font-size: 18px; }

p { margin: 12px 0 0; }

.lede {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(18px, 2.8vw, 22px);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 34px;
}

.card, .prose {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: 0 22px 70px rgba(0, 0, 0, .22);
  backdrop-filter: blur(18px);
}

.card { padding: 22px; }
.card p { color: var(--muted); font-size: 15px; }

.prose { margin-top: 28px; padding: clamp(22px, 5vw, 48px); }
.prose h1 { font-size: clamp(34px, 6vw, 54px); }
.prose h2 { padding-top: 10px; }
.prose h3 { margin-top: 24px; }
.prose p, .prose li { color: #c5d9d6; }
.prose strong { color: var(--text); }
.prose ul { padding-left: 22px; }
.prose li + li { margin-top: 7px; }

.notice {
  margin-top: 24px;
  padding: 16px 18px;
  border: 1px solid rgba(255, 213, 138, .24);
  border-radius: 14px;
  color: #ffe7bb;
  background: rgba(255, 180, 70, .08);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  background: var(--panel-strong);
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  border-color: transparent;
  color: #062018;
  background: var(--accent);
}

.meta {
  margin-top: 18px;
  color: #789892;
  font-size: 13px;
}

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  margin-top: 38px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: #789892;
  font-size: 13px;
}

@media (max-width: 720px) {
  .nav { align-items: flex-start; }
  .nav-links { max-width: 210px; }
  .grid { grid-template-columns: 1fr; }
}

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