.bs-main{padding:28px 0 64px}.bs-shell{max-width:1080px;margin:auto;padding:0 18px}.bs-crumb{font-size:.92rem;margin:0 0 18px;color:var(--text-muted,#64748b)}.bs-crumb a{color:inherit}
.bs-hero,.bs-section,.bs-callout{padding:22px;border:1px solid var(--border,#dbe4ee);border-radius:18px;background:var(--surface,#fff);margin-bottom:18px}.bs-hero h1{margin:.35rem 0 .6rem;font-size:clamp(1.55rem,4vw,2.35rem);line-height:1.25}.bs-hero p{margin:0;color:var(--text-muted,#64748b);line-height:1.7}
.bs-kicker{font-weight:700;color:var(--text-muted,#64748b)}.bs-nav{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 18px}.bs-nav a{padding:10px 13px;border:1px solid var(--border,#dbe4ee);border-radius:12px;text-decoration:none;background:var(--surface,#fff)}
.bs-toc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:14px}.bs-toc a{display:block;padding:10px 12px;border-radius:10px;background:var(--surface-subtle,#f7f9fc);text-decoration:none}
.bs-section h2{margin:0 0 12px;font-size:1.35rem}.bs-section h3{margin:20px 0 8px;font-size:1.08rem}.bs-section p,.bs-section li,.bs-callout li{line-height:1.75}.bs-section ul,.bs-section ol{padding-left:1.35rem}
.bs-table-wrap{overflow-x:auto;margin:12px 0}.bs-table{width:100%;border-collapse:collapse;min-width:840px}.bs-table th,.bs-table td{border:1px solid var(--border,#dbe4ee);padding:11px 12px;vertical-align:top;line-height:1.58}.bs-table th{text-align:left;background:var(--surface-subtle,#f7f9fc)}
.bs-callout{border-left:4px solid #ea580c}.bs-callout h2{margin:0 0 10px;font-size:1.08rem}.bs-focus{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:14px 0 0}.bs-focus div{padding:12px;border-radius:12px;background:var(--surface-subtle,#f7f9fc)}.bs-focus strong{display:block;margin-bottom:4px}.bs-q{padding:14px 0;border-top:1px solid var(--border,#dbe4ee)}.bs-q:first-child{border-top:0;padding-top:0}.bs-note{padding:12px 14px;border-radius:12px;background:var(--surface-subtle,#f7f9fc);line-height:1.7;margin:12px 0}.bs-footnote{font-size:.92rem;color:var(--text-muted,#64748b);line-height:1.65}
@media(max-width:720px){.bs-toc,.bs-focus{grid-template-columns:1fr}.bs-hero,.bs-section,.bs-callout{padding:16px}.bs-table{min-width:720px}}