.breadcrumb{display:flex;align-items:center;gap:10px;padding-top:94px;padding-bottom:16px;font-size:.86rem;color:var(--text-muted)}
.breadcrumb a{color:inherit;text-decoration:none}.breadcrumb a:hover{text-decoration:underline}
.cluster-hero{background:linear-gradient(135deg,#0b1739 0%,#162b66 64%,#244aa0 100%);color:#fff;padding:66px 0 72px;position:relative;overflow:hidden}
.cluster-hero::after{content:"";position:absolute;width:360px;height:360px;border-radius:50%;right:-120px;top:-180px;background:rgba(126,174,255,.14)}
.cluster-hero-inner{max-width:980px;text-align:center;position:relative;z-index:1}
.article-kicker{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:#b9d4ff;font-weight:800;margin-bottom:16px}
.cluster-hero h1{font-family:var(--font-heading);font-size:clamp(2.25rem,5vw,4.25rem);line-height:1.08;max-width:950px;margin:0 auto 22px;color:#fff}
.article-meta{display:flex;justify-content:center;align-items:center;gap:10px;flex-wrap:wrap;color:#d8e5ff;font-size:.9rem}.article-meta a{color:#fff;text-underline-offset:3px}
.article-shell{max-width:920px}.article-content{padding:58px 0 80px;font-size:1.06rem;line-height:1.8;color:var(--text-main)}
.article-content h2{font-family:var(--font-heading);font-size:clamp(1.65rem,3vw,2.15rem);line-height:1.2;color:var(--brand-dark);margin:54px 0 18px}
.article-content h3{font-size:1.22rem;line-height:1.35;margin:28px 0 10px;color:var(--text-heading)}
.article-content p{margin:0 0 21px}.article-content ul,.article-content ol{margin:0 0 26px;padding-left:25px}.article-content li{margin-bottom:10px}
.article-content a{color:var(--brand-blue);text-decoration-thickness:1px;text-underline-offset:3px}
.answer-card{font-size:1.12rem;background:linear-gradient(135deg,#eef5ff,#f8fbff);border:1px solid #bfd4ff;border-left:5px solid var(--brand-blue);border-radius:0 14px 14px 0;padding:24px 26px;margin-bottom:30px;color:#17264b}
.toc{border:1px solid var(--border-light);background:var(--bg-soft);border-radius:14px;padding:23px 28px;margin-bottom:42px}.toc strong{display:block;margin-bottom:8px}.toc ol{margin:0}.toc li{margin:5px 0}
.fact-card,.medical-note{border-radius:14px;padding:22px 24px;margin:28px 0}.fact-card{background:#eef6ff;border:1px solid #c7dcff}.fact-card p:last-child,.fact-card ul:last-child{margin-bottom:0}
.medical-note{background:#fff7e8;border:1px solid #f2c36b;color:#51370a}
.evidence-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0 30px}.evidence-grid article{border:1px solid var(--border-light);border-radius:14px;padding:20px;background:var(--bg-white)}.evidence-grid h3{margin:0 0 8px}.evidence-grid p{font-size:.96rem;line-height:1.65;margin:0}
.steps{counter-reset:steps;list-style:none;padding-left:0!important}.steps li{counter-increment:steps;position:relative;padding:0 0 18px 48px;min-height:38px}.steps li::before{content:counter(steps);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--brand-blue);color:#fff;font-weight:800}
.choice-table{overflow-x:auto;margin:25px 0 32px;border:1px solid var(--border-light);border-radius:14px}.choice-table table{width:100%;border-collapse:collapse;min-width:620px}.choice-table th,.choice-table td{padding:14px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--border-light)}.choice-table th{background:#eef5ff;color:#17306d}.choice-table tr:last-child td{border-bottom:0}
.faq-list{display:grid;gap:12px;margin:22px 0 40px}.faq-list details{border:1px solid var(--border-light);border-radius:12px;background:var(--bg-white);padding:0 18px}.faq-list summary{cursor:pointer;font-weight:750;padding:17px 28px 17px 0;position:relative}.faq-list summary::after{content:"+";position:absolute;right:0;font-size:1.25rem}.faq-list details[open] summary::after{content:"–"}.faq-list details p{padding:0 0 17px;margin:0}
.source-box{background:var(--bg-soft);border-radius:16px;padding:26px;margin-top:48px}.source-box h2{margin-top:0;font-size:1.55rem}.source-box p,.source-box li{font-size:.94rem}.source-box ul{margin-bottom:0}
.cluster-related{margin-top:50px}.cluster-related>div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.related-card{display:flex;flex-direction:column;gap:7px;border:1px solid var(--border-light);border-radius:14px;padding:20px;text-decoration:none!important;background:var(--bg-white);transition:.2s}.related-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(15,23,42,.09)}.related-card span{text-transform:uppercase;font-size:.68rem;letter-spacing:.1em;color:var(--text-muted);font-weight:800}.related-card strong{color:var(--text-heading);line-height:1.35}.related-card b{color:var(--brand-blue);margin-top:auto}
.author-card{margin-top:44px;border-top:1px solid var(--border-light);padding:30px 0 0}.author-card>span{font-size:.74rem;text-transform:uppercase;letter-spacing:.12em;color:var(--text-muted);font-weight:800}.author-card h2{font-size:1.45rem;margin:8px 0 10px}.author-card p{font-size:.96rem}
.footer-grid-rich{grid-template-columns:1.35fr repeat(3,1fr)}
.header-actions{display:flex;align-items:center}.header-actions #theme-toggle{background:none;border:0;cursor:pointer;font-size:1.1rem;margin:0 16px}.logo-icon-wrapper{display:flex;align-items:center;gap:8px}
[data-theme="dark"] .answer-card{background:#15264a;border-color:#315590;color:#e5edff}[data-theme="dark"] .fact-card{background:#14243d;border-color:#294467}[data-theme="dark"] .choice-table th{background:#172744;color:#dce9ff}[data-theme="dark"] .medical-note{background:#352a12;color:#ffe5aa}[data-theme="dark"] .article-content h2{color:#fff}
@media(max-width:800px){.evidence-grid{grid-template-columns:1fr}.cluster-related>div{grid-template-columns:1fr}.footer-grid-rich{grid-template-columns:1fr 1fr}.article-content{padding-left:6px;padding-right:6px}.cluster-hero{padding:50px 0 56px}.breadcrumb{padding-top:82px}}
@media(max-width:540px){.footer-grid-rich{grid-template-columns:1fr}.cluster-hero h1{font-size:2.25rem}.answer-card{padding:20px}.toc{padding:20px}.article-content{font-size:1rem}.article-meta span:nth-of-type(2){display:none}}