* { box-sizing: border-box; }
body { margin: 0; background: #eff6ff; color: #0d0d0d; font: 16px/1.6 system-ui, "Microsoft YaHei", sans-serif; }
main { max-width: 760px; margin: 48px auto; padding: 28px; background: #fff; border: 1px solid #ddd; border-radius: 12px; }
h1 { margin: 12px 0; font-size: clamp(24px, 5vw, 36px); line-height: 1.3; }
.eyebrow, .caption { color: #5d5d5d; font-size: 13px; }
.version { font-size: 20px; }
img { display: block; max-width: 100%; height: auto; margin-top: 24px; border-radius: 8px; }
@media (max-width: 600px) { main { margin: 16px; padding: 20px; } }