:root{--bg:#f6f7f9;--card:#fff;--ink:#1c2430;--muted:#5b6572;--brand:#0b5bd3;--brand-dark:#08449e;--line:#e3e7ec;--warn:#fff7e6;--warn-line:#f0c36d;--ok:#e9f7ef}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:880px;margin:0 auto;padding:0 20px}
header.site{background:#0d1b2a;color:#fff}header.site .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;padding-top:14px;padding-bottom:14px}
.logo{font-weight:800;font-size:1.25rem;color:#fff;letter-spacing:-.02em}.logo span{color:#7fb2ff}
nav.main a{color:#cfd8e3;margin-left:18px;font-size:.95rem}nav.main a:hover{color:#fff}
.breadcrumb{font-size:.82rem;color:var(--muted);padding:14px 0 0}.breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}.breadcrumb li+li:before{content:"/";margin-right:6px;color:#aab3bd}
article.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:32px 36px;margin:18px 0 40px;box-shadow:0 1px 3px rgba(16,24,40,.05)}
h1{font-size:1.9rem;line-height:1.25;margin:.2em 0 .6em;letter-spacing:-.02em}
h2{font-size:1.35rem;margin:1.8em 0 .5em}h3{font-size:1.1rem;margin:1.4em 0 .4em}
.meta{color:var(--muted);font-size:.85rem;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:18px}
.lede{font-size:1.08rem;color:#33404f}
ul,ol{padding-left:1.4em}li{margin:.35em 0}
.disclaimer{background:var(--warn);border:1px solid var(--warn-line);border-radius:10px;padding:14px 18px;font-size:.92rem;margin:22px 0}
.note-ok{background:var(--ok);border:1px solid #bfe3cd;border-radius:10px;padding:14px 18px;font-size:.92rem;margin:22px 0}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.92rem}th,td{border:1px solid var(--line);padding:9px 12px;text-align:left}th{background:#f0f3f7}
footer.site{background:#0d1b2a;color:#9fb0c3;font-size:.85rem;padding:34px 0;margin-top:30px}footer.site a{color:#9fb0c3}footer.site nav{margin-top:8px}footer.site nav a{margin-right:16px}
.toc{background:#f0f3f7;border-radius:10px;padding:14px 20px;font-size:.92rem}
.related{border-top:1px solid var(--line);margin-top:30px;padding-top:18px;font-size:.92rem}
.related a{display:inline-block;margin:4px 14px 4px 0}
@media(max-width:640px){article.card{padding:22px 18px}h1{font-size:1.5rem}nav.main a{margin-left:10px;font-size:.85rem}}