:root{font:16px/1.65 system-ui,Segoe UI,sans-serif;color:#17212d;background:#f5f7fb}*{box-sizing:border-box}body{margin:0}header,main,footer{max-width:900px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;border-bottom:1px solid #d9e0e8}nav{display:flex;gap:20px}a{color:#1554a0}h1{font-size:clamp(30px,5vw,46px);line-height:1.2}h2{font-size:23px;margin-top:32px}.notice{padding:14px 18px;background:#e8effa;border-left:4px solid #1554a0}.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}.cards section{background:white;padding:18px;border:1px solid #d9e0e8;border-radius:10px}.cards h2{margin-top:0}footer{border-top:1px solid #d9e0e8;font-size:14px;color:#526174}a:focus-visible{outline:3px solid #1554a0;outline-offset:4px}@media(max-width:620px){.cards{grid-template-columns:1fr}header{display:block}nav{flex-wrap:wrap;margin-top:12px}}

/* Shared product identity: local artwork, stable compact dimensions. */
header{align-items:center;gap:20px;padding-top:16px;padding-bottom:16px}.brand{display:flex;align-items:center;gap:12px;min-width:0;font-size:16px;line-height:1.35}.brand img{display:block;width:40px;height:40px;flex:0 0 40px;object-fit:contain;border-radius:10px}nav{align-items:center;flex-wrap:wrap}nav a{white-space:nowrap}@media(max-width:620px){header{display:flex;flex-direction:column;align-items:flex-start;gap:12px}nav{margin-top:0;gap:16px}}