:root{--ink:#1d2a38;--muted:#546579;--line:#dce4ec;--blue:#164e7a;--bg:#f6f8fa}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Arial,sans-serif}
.wrap{max-width:950px;margin:auto;padding:0 24px}header{background:#173b55;color:white;padding:40px 0 27px}header h1{font-size:clamp(2rem,4.8vw,2.8rem);line-height:1.14;margin:0 0 8px}header p{opacity:.9;margin:0}nav{background:white;border-bottom:1px solid var(--line)}nav .wrap{display:flex;flex-wrap:wrap;gap:9px 22px;padding-top:13px;padding-bottom:13px}nav a{font-size:14px;color:var(--blue);text-decoration:none}nav a:hover{text-decoration:underline}main{padding-top:28px;padding-bottom:50px}.section{background:white;border:1px solid var(--line);border-radius:9px;padding:27px 30px;margin:0 0 18px}.section h2{margin:0 0 9px;font-size:1.35rem}.section h3{margin:18px 0 6px;font-size:1.08rem}.description{color:var(--muted);margin:5px 0 12px}ul{padding-left:23px;margin:8px 0}li{padding:4px 0}a{color:#075a91;text-underline-offset:2px}a:hover{color:#083e62}.tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.tile{border:1px solid var(--line);background:#fff;border-radius:9px;padding:22px}.tile h2{font-size:1.2rem;margin:0 0 8px}.tile p{color:var(--muted);font-size:.94rem;margin:0 0 12px}.contents{background:#f0f5f9;border-left:3px solid #24628c;padding:13px 18px;margin:18px 0}.contents ul{margin-bottom:0}footer{text-align:center;color:var(--muted);font-size:13px;padding:0 20px 30px}@media(max-width:650px){.tiles{grid-template-columns:1fr}.wrap{padding-left:16px;padding-right:16px}.section{padding:20px 18px}}