*{box-sizing:border-box}:root{color-scheme:light dark;--bg:#f3f6fa;--panel:#fff;--ink:#172b46;--muted:#53657a;--line:#dce3eb;--accent:#246b9c;--soft:#e8f3f8}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif;line-height:1.8}main{max-width:1080px;margin:auto;padding:40px 22px 70px}a{color:var(--accent);text-underline-offset:3px}h1{font-size:clamp(1.7rem,4vw,2.7rem);line-height:1.4;margin:.4em 0}h2{font-size:1.35rem;margin:0 0 16px}h3{font-size:1.05rem}p{margin:.6em 0 1em}.eyebrow{color:var(--muted);font-size:.9rem;letter-spacing:.08em}.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px;margin:20px 0}.lead{background:var(--soft);border-left:5px solid var(--accent)}.links{display:flex;flex-wrap:wrap;gap:12px 22px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0}.stat{padding:18px 22px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}.stat strong{display:block;font-size:2.3rem;line-height:1.3}.stat span,.note,figcaption{color:var(--muted);font-size:.93rem}.formula{padding:16px;border-radius:10px;background:var(--soft);font-size:1.12rem}.scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}th,td{text-align:right;padding:9px 14px;border-bottom:1px solid var(--line);white-space:nowrap}th:first-child,td:first-child{text-align:left}thead{background:var(--soft)}figure{margin:12px 0}img{display:block;width:100%;height:auto;border-radius:10px}code{overflow-wrap:anywhere;font-size:.9em}li{margin:8px 0}.foot{font-size:.85rem;color:var(--muted)}@media(prefers-color-scheme:dark){:root{--bg:#101923;--panel:#152132;--ink:#e5edf7;--muted:#b5c5d8;--line:#3b4b60;--accent:#71c7ef;--soft:#20364a}}@media(max-width:600px){main{padding:22px 14px 44px}.panel{padding:18px}.stats{gap:8px}.stat{padding:12px}.stat strong{font-size:1.8rem}th,td{padding:8px}}