:root{--ink:#17242c;--muted:#63747e;--line:#dce6e8;--brand:#116b64;--soft:#eff8f6;--warn:#fff5dc;--alert:#a13d2d}*{box-sizing:border-box}body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Noto Sans KR","Noto Sans SC",sans-serif;line-height:1.75}a{color:var(--brand)}header,footer{background:#102f34;color:#fff}.wrap{max-width:940px;margin:auto;padding:30px 22px}.brand{color:#fff;text-decoration:none;font-weight:800}.hero{background:linear-gradient(135deg,#edf8f6,#f9fcfc)}h1{font-size:clamp(1.9rem,5vw,3rem);line-height:1.25;margin:.35em 0}h2{margin-top:2em}.lead{font-size:1.12rem;color:#3d505a}.tag{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:4px 10px;margin:0 6px 6px 0;background:#fff;font-size:.84rem}.notice{background:var(--warn);border-left:4px solid #d79a00;padding:15px 17px;margin:22px 0}.alert{color:var(--alert);font-weight:700}.card{border:1px solid var(--line);border-radius:14px;padding:18px;margin:16px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px}table{width:100%;border-collapse:collapse}th,td{border-bottom:1px solid var(--line);padding:10px;text-align:left;vertical-align:top}th{background:var(--soft)}.small{font-size:.9rem;color:var(--muted)}nav a{color:#d9f1ee;margin-right:14px}.sources li{margin:.55em 0}@media(max-width:640px){.wrap{padding:24px 17px}table{display:block;overflow:auto}h1{font-size:2rem}}