:root {
  color-scheme: dark;
  --ink: #edf5ff;
  --muted: #9caec5;
  --line: rgba(255, 255, 255, .12);
  --panel: rgba(10, 26, 46, .78);
  --accent: #79e6c4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 82% 8%, #183969 0, transparent 31rem), radial-gradient(circle at 8% 86%, #144d4b 0, transparent 29rem), #07111f;
}

a { color: var(--accent); text-underline-offset: 3px; }
code { padding: .12em .36em; border: 1px solid rgba(255,255,255,.1); border-radius: 5px; color: #d7e7f4; background: rgba(1,9,18,.45); font-size: .9em; }

.shell { width: min(820px, calc(100% - 32px)); margin: auto; padding: 38px 0 54px; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 42px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 1.18rem;
  font-weight: 850;
  letter-spacing: -.05em;
  text-decoration: none;
}

.brand img { width: 48px; height: 48px; filter: drop-shadow(0 6px 13px rgba(0,0,0,.28)); }
.brand span span { color: var(--accent); }

.site-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px 17px; }
.site-nav a { color: #c8d6e7; font-size: .82rem; font-weight: 700; text-decoration: none; }
.site-nav a[aria-current="page"], .site-nav a:hover { color: var(--accent); }

.page {
  padding: clamp(24px, 5vw, 46px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 24px 65px rgba(0,0,0,.24);
  backdrop-filter: blur(12px);
}

.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: .7rem; font-weight: 800; letter-spacing: .17em; text-transform: uppercase; }
h1 { max-width: 700px; margin: 0 0 22px; font-size: clamp(2rem, 7vw, 3.6rem); letter-spacing: -.06em; line-height: 1; }
h2 { margin: 34px 0 10px; color: #dbe8f5; font-size: 1.28rem; letter-spacing: -.025em; }
h3 { margin: 24px 0 8px; color: #dbe8f5; font-size: 1rem; }
p, li { color: #b8c8da; font-size: .98rem; line-height: 1.75; }
p { margin: 0 0 16px; }
ul { margin: 10px 0 18px; padding-left: 22px; }
li + li { margin-top: 7px; }

.lead { color: #cbd8e6; font-size: 1.08rem; }
.callout { margin: 26px 0; padding: 18px 20px; border: 1px solid rgba(121,230,196,.22); border-radius: 14px; background: rgba(121,230,196,.07); }
.callout p:last-child { margin-bottom: 0; }
.meta { color: var(--muted); font-size: .8rem; }

.page-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 24px;
  color: var(--muted);
  font-size: .76rem;
}

.page-footer nav { display: flex; flex-wrap: wrap; gap: 8px 14px; }
.page-footer a { color: #bdd0e6; }
.footer-mark { width: 30px; height: 30px; }

@media (max-width: 620px) {
  .shell { padding-top: 24px; }
  .site-header { align-items: flex-start; margin-bottom: 28px; }
  .site-nav { max-width: 155px; }
  .page { padding: 24px 20px; border-radius: 18px; }
  .page-footer { align-items: flex-start; }
}