:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #f4f7fb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 24px;
  background: linear-gradient(145deg, #eef3ff, #f8fafc 55%, #eefbf7);
}

.page { max-width: 900px; margin: 0 auto; }
.hero, .entry { background: #fff; border: 1px solid #e3e8f0; border-radius: 18px; box-shadow: 0 10px 28px rgba(29, 49, 86, .07); }
.hero { padding: 28px; margin-bottom: 18px; }
.hero h1 { margin: 0 0 8px; font-size: clamp(1.5rem, 4vw, 2.2rem); }
.hero p { margin: 6px 0; color: #526079; line-height: 1.55; }
.version { display: inline-block; margin-top: 14px; padding: 7px 12px; border-radius: 999px; background: #e9efff; color: #2854c5; font-weight: 700; }
.entry { padding: 22px 24px; margin: 14px 0; }
.entry h2 { margin: 0 0 4px; font-size: 1.18rem; }
.date { color: #6a7488; font-size: .92rem; margin-bottom: 12px; }
.entry h3 { margin: 15px 0 5px; font-size: .98rem; color: #35445f; }
.entry ul { margin: 6px 0 0; padding-left: 22px; line-height: 1.65; }
.entry li + li { margin-top: 4px; }
.back { display: inline-block; margin-top: 18px; color: #2854c5; text-decoration: none; font-weight: 600; }
.back:hover { text-decoration: underline; }
@media (max-width: 600px) { body { padding: 12px; } .hero, .entry { padding: 18px; border-radius: 14px; } }