:root {
  --bg: #ffffff;
  --fg: #1b1b1b;
  --muted: #5c5c5c;
  --line: #d9d9d9;
  --card: #f6f6f6;
  --accent: #0b5fa5;
  --accent-fg: #ffffff;
  --ad: #7a4a00;
  --ad-bg: #fff1cc;
  --expired: #8a1c1c;
  --expired-bg: #fde3e3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131416;
    --fg: #ececec;
    --muted: #a8a8a8;
    --line: #333;
    --card: #1d1f22;
    --accent: #6db3f2;
    --accent-fg: #0b1620;
    --ad: #ffd27a;
    --ad-bg: #3a2c08;
    --expired: #ffb4b4;
    --expired-bg: #3c1616;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main, .site-header, .site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}
a { color: var(--accent); }
h1 { font-size: 1.7rem; line-height: 1.2; margin: 1rem 0 .5rem; }
h2 { font-size: 1.25rem; line-height: 1.25; margin: 1.5rem 0 .5rem; }
h2.section { margin-top: 2.5rem; border-top: 1px solid var(--line); padding-top: 1rem; }
p { margin: .6rem 0; }
ul { padding-left: 1.2rem; }
li { margin: .3rem 0; }
.lead { font-size: 1.1rem; }
.small { font-size: .9rem; color: var(--muted); }
.meta { font-size: .85rem; color: var(--muted); margin: 0 0 .25rem; }
.notice {
  background: var(--card);
  border-left: 4px solid var(--accent);
  padding: .75rem 1rem;
  margin: 1rem 0;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1rem;
  padding-top: .75rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--line);
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--fg);
}
.site-header nav { display: flex; gap: 1rem; font-size: .95rem; }
.site-header nav a { text-decoration: none; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1rem;
  margin: 1rem 0;
}
.card h2 { margin: .25rem 0 .5rem; }
.card h2 a { color: var(--fg); text-decoration: none; }
.card h2 a:hover { text-decoration: underline; }
.card-expired { opacity: .75; }

.tag {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .02em;
  padding: .1rem .5rem;
  border-radius: 3px;
  background: var(--line);
  color: var(--fg);
  vertical-align: middle;
}
.ad {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: .1rem .5rem;
  border-radius: 3px;
  background: var(--ad-bg);
  color: var(--ad);
  vertical-align: middle;
}
.tag-expired { background: var(--expired-bg); color: var(--expired); }

.button {
  display: block;
  width: 100%;
  text-align: center;
  padding: .85rem 1rem;
  margin: .75rem 0;
  border: 2px solid var(--accent);
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  color: var(--accent);
  background: transparent;
}
.button-primary {
  background: var(--accent);
  color: var(--accent-fg);
}
.button:hover { filter: brightness(1.1); }

.site-footer {
  margin-top: 3rem;
  padding-top: 1rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--line);
  font-size: .85rem;
  color: var(--muted);
}

address { font-style: normal; }