:root {
  --bg: #F5F8FA;
  --surface: #FFFFFF;
  --surface-2: #ECF2F5;
  --ink: #0B1C29;
  --ink-soft: #4C6070;
  --line: #DAE4EA;
  --accent: #0E8E92;
  --accent-bright: #1FBDC0;
  --navy: #0E3357;
  --shadow: 0 1px 2px rgba(11,28,41,.06), 0 8px 30px rgba(11,28,41,.06);
  --maxw: 760px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #050D14;
    --surface: #0B1C29;
    --surface-2: #12273A;
    --ink: #E6EEF3;
    --ink-soft: #92A7B5;
    --line: #1B3143;
    --accent: #2AD0E0;
    --accent-bright: #2AD0E0;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 34px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, .logo-word {
  font-family: 'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  text-wrap: balance;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
a { color: var(--accent); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

header.site {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}
header.site .row {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
header.site a.brand {
  display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink);
}
header.site .logo {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(150deg, var(--navy), #04223d);
  display: grid; place-items: center; box-shadow: var(--shadow);
}
header.site .logo svg { width: 17px; height: 17px; }
header.site .logo-word { font-size: 15px; font-weight: 700; }
header.site nav a {
  color: var(--ink-soft); text-decoration: none; font-size: 14.5px; font-weight: 600;
  margin-left: 20px;
}
header.site nav a:hover { color: var(--accent); }

main { padding: 44px 0 20px; }
.eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent);
}
h1.title { font-size: clamp(28px, 5vw, 40px); font-weight: 800; margin: 14px 0 8px; }
.dek { font-size: 18px; color: var(--ink-soft); margin: 0 0 8px; }
.meta { font-size: 13px; color: var(--ink-soft); margin: 18px 0 36px; }

article h2 {
  font-size: clamp(20px, 3vw, 24px); font-weight: 750; margin: 40px 0 14px;
}
article p { margin: 0 0 18px; font-size: 16.5px; }
article ul, article ol { margin: 0 0 20px; padding-left: 22px; }
article li { margin: 0 0 8px; font-size: 16.5px; }
article strong { color: var(--ink); }

.callout {
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px 22px; margin: 30px 0; box-shadow: var(--shadow);
}
.callout p:last-child { margin-bottom: 0; }

.cta {
  margin: 44px 0; padding: 28px 26px; border-radius: 18px; text-align: center;
  background: linear-gradient(180deg, rgba(31,189,192,0.10), transparent 70%), var(--surface);
  border: 1px solid rgba(14,142,146,0.35);
}
.cta h3 { margin: 0 0 8px; font-size: 21px; }
.cta p { color: var(--ink-soft); margin: 0 0 18px; }
.cta .btn {
  display: inline-block; text-decoration: none; font-weight: 700; font-size: 15px;
  color: #fff; background: var(--navy); padding: 12px 26px; border-radius: 999px;
}
.cta .btn:hover { background: var(--accent); }

.guide-list { display: grid; gap: 16px; margin: 28px 0; }
.guide-card {
  display: block; text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px 22px; box-shadow: var(--shadow);
}
.guide-card h2 { margin: 0 0 6px; font-size: 19px; color: var(--ink); }
.guide-card p { margin: 0; color: var(--ink-soft); font-size: 14.5px; }

footer.site {
  border-top: 1px solid var(--line); margin-top: 40px; padding: 26px 0 40px;
  color: var(--ink-soft); font-size: 13px;
}
footer.site a { color: var(--ink-soft); text-decoration: underline; }
footer.site .links { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; }