:root {
  --bg: #f6f7f9; --card: #ffffff; --ink: #14213d; --muted: #5b6475; --line: #dde1e8;
  --accent: #002d72; --accent-ink: #ffffff; --soft: #eef2f8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1320; --card: #161d2e; --ink: #e8ecf4; --muted: #a2abbd; --line: #2a3347;
    --accent: #6f9bff; --accent-ink: #0e1320; --soft: #1b2438;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; border-top: 4px solid #F1C400; background: var(--bg); color: var(--ink); font: 17px/1.65 Arial, "Helvetica Neue", Helvetica, sans-serif; }
a { color: var(--accent); text-underline-offset: 2px; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

.top { background: var(--card); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
.brand { font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-weight: 600; font-size: 19px; color: var(--ink); text-decoration: none; }
.brand span { color: var(--muted); font-weight: 400; }
nav { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
nav a { font-size: 15px; font-weight: 500; color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 6px; }
nav a:hover, nav a.on { color: var(--ink); background: var(--soft); }
nav a.join { background: var(--accent); color: var(--accent-ink); margin-left: 4px; }

main.wrap { padding-top: 40px; padding-bottom: 24px; }
h1, h2, h3 { font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-weight: 600; line-height: 1.2; }
h1 { font-size: 36px; margin: 0 0 12px; }
.lede, .dek { font-size: 19px; color: var(--muted); margin: 0 0 28px; }
.meta { font-size: 14px; color: var(--muted); margin: 0 0 8px; text-transform: uppercase; letter-spacing: .05em; font-weight: 600; }

.prose h2 { font-size: 25px; margin: 40px 0 12px; padding-top: 20px; border-top: 1px solid var(--line); }
.prose h3 { font-size: 20px; margin: 28px 0 8px; }
.prose p { margin: 0 0 16px; }
.prose ul { padding-left: 20px; margin: 0 0 20px; }
.prose li { margin: 0 0 14px; }
.prose li p { margin: 0 0 6px; }
.prose strong { font-weight: 600; }
.prose blockquote { margin: 0 0 16px; padding: 4px 0 4px 16px; border-left: 3px solid var(--line); color: var(--muted); }
.prose a { word-break: break-word; }
.back { margin: 40px 0 0; font-size: 15px; }

.list { list-style: none; padding: 0; margin: 0; }
.list li { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; margin: 0 0 14px; }
.list h2 { font-size: 22px; margin: 4px 0 6px; }
.list h2 a { color: var(--ink); text-decoration: none; }
.list h2 a:hover { color: var(--accent); }
.list p { margin: 0; color: var(--muted); }
.section-title { font-size: 14px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted);  font-weight: 600; margin: 36px 0 12px; }

.foot { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 20px; padding-bottom: 40px; font-size: 14px; color: var(--muted); }
.foot p { margin: 0 0 6px; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  h1 { font-size: 29px; }
  .lede, .dek { font-size: 17px; }
}