:root{--bg:#f5f6f8;--paper:#fff;--ink:#17202b;--muted:#596575;--line:#dce1e7;--brand:#8b1838;--soft:#fff1f4;--max:1120px}
*{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}
a{color:var(--brand)}img{max-width:100%;height:auto}.wrap{width:min(var(--max),calc(100% - 30px));margin:auto}
.sitehead{background:#fff;border-bottom:1px solid var(--line)}.nav{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{font-weight:900;text-decoration:none;color:var(--ink)}
.navlinks{display:flex;gap:14px;flex-wrap:wrap}.navlinks a{text-decoration:none;font-weight:750}.crumbs{font-size:.9rem;color:var(--muted);padding:16px 0}
.hero{padding:34px 0 42px;background:linear-gradient(135deg,#fff,#f9edf1)}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:34px;align-items:center}
.kicker{font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;font-weight:900;color:var(--brand)}h1,h2,h3{line-height:1.16;letter-spacing:-.02em}
h1{font-size:clamp(1.9rem,4.3vw,3.25rem);margin:.28em 0 .32em}h2{font-size:clamp(1.35rem,2.7vw,2rem);margin:0 0 14px}
.lead{font-size:1.08rem;color:var(--muted);max-width:760px}.cta{display:inline-flex;margin-top:18px;padding:13px 18px;border-radius:11px;background:var(--brand);color:#fff;text-decoration:none;font-weight:900}
.note{margin-top:16px;padding:13px 15px;border:1px solid #ebcdd7;background:var(--soft);border-radius:12px}.hero-media{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:0 12px 30px #18202a10}
.hero-media img{display:block;width:100%;aspect-ratio:1.18/1;object-fit:contain}.section{padding:34px 0}.section.alt{background:#fff;border-block:1px solid var(--line)}
.content{max-width:900px}.content p{color:#394657}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
.card b{display:block;margin-bottom:5px}.clean{padding-left:1.25rem}.clean li{margin:.55rem 0;color:#394657}.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.fact{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px}.fact small{display:block;color:var(--muted);font-weight:700}.fact strong{word-break:break-word}
.related{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.related a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;text-decoration:none;font-weight:800}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 15px;margin:10px 0}summary{font-weight:850;cursor:pointer}
.footer{padding:28px 0 42px;color:var(--muted);font-size:.93rem}.footer a{color:inherit}.variant-b .hero-grid{grid-template-columns:.9fr 1.1fr}.variant-b .hero-media{order:-1}
.variant-c .hero{background:#fff}.variant-c .hero-grid{grid-template-columns:1fr}.variant-c .hero-media{max-width:620px}
@media(max-width:760px){.hero-grid,.facts,.grid,.related{grid-template-columns:1fr}.variant-b .hero-media{order:initial}.nav{align-items:flex-start;padding:14px 0;flex-direction:column}}

/* V21 Authority & Evidence */
.skip-link{position:absolute;left:-9999px;top:8px;z-index:999;background:#fff;color:var(--ink);padding:10px 14px;border:2px solid var(--brand);border-radius:8px}
.skip-link:focus{left:8px}
a:focus-visible,summary:focus-visible{outline:3px solid currentColor;outline-offset:3px}
.evidence-section{background:#f8fafb;border-block:1px solid var(--line)}
.evidence-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0}
.evidence-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px;display:flex;flex-direction:column;gap:6px}
.evidence-card small{color:var(--muted);font-weight:800;text-transform:uppercase;letter-spacing:.04em}
.evidence-card strong{line-height:1.3}
.evidence-card span{color:#44505f;font-size:.94rem}
.status-ok{color:#236239}.status-limited{color:#7a4b10}
.method-note{padding:14px 16px;border-left:4px solid var(--brand);background:#fff;border-radius:0 10px 10px 0}
.evidence-source{padding:12px 14px;border:1px dashed var(--line);border-radius:10px;background:#fff}
.footer .footer-method{font-weight:700}
@media(max-width:760px){.evidence-grid{grid-template-columns:1fr}}