:root{
--ink:#1d1d1f;--sub:#6e6e73;--faint:#86868b;
--bg:#fff;--bg2:#f5f5f7;--line:#d2d2d7;--line2:#e8e8ed;
--accent:#6d28d9;--accent-press:#5b21b6;--on-accent:#fff;
--r:18px;--r-sm:12px;--pill:980px;
--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Helvetica,Arial,sans-serif;
--wrap:1024px;--wide:1280px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:19px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
p{margin:0 0 1.1em}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.022em;line-height:1.06}
h1{font-size:clamp(40px,6.4vw,80px)}
h2{font-size:clamp(30px,4.2vw,52px);letter-spacing:-.021em}
h3{font-size:24px;letter-spacing:-.01em;line-height:1.2}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}
button,input,select{font:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* top strip + header */
.topline{background:var(--bg2);color:var(--sub);font-size:12px;padding:7px 0}
.topline .wrap{display:flex;justify-content:space-between;gap:20px}
.topline a{color:var(--accent)}
.topline a:hover{text-decoration:underline}
.header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.8);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line2)}
.header-inner{height:64px;display:flex;align-items:center;gap:32px;max-width:var(--wide);margin:0 auto;padding:0 32px}
.brand,.brand-wordmark{display:inline-flex;align-items:baseline;font-size:23px;font-weight:600;letter-spacing:-.02em;color:var(--ink)}
.brand-period{width:5px;height:5px;border-radius:50%;background:var(--accent);margin-left:3px;align-self:flex-end;margin-bottom:5px}
.nav{display:flex;gap:30px;margin-left:auto;font-size:14px;font-weight:450}
.nav a{color:var(--ink);opacity:.85}
.nav a:hover,.nav a[aria-current=page]{opacity:1;color:var(--accent)}
.menu-toggle{display:none;background:none;border:0;padding:8px;color:var(--ink)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;background:var(--accent);color:var(--on-accent);padding:12px 24px;border:0;border-radius:var(--pill);font-size:16px;font-weight:500;line-height:1.3;cursor:pointer;transition:background .2s}
.btn:hover{background:var(--accent-press)}
.btn.secondary{background:transparent;color:var(--accent);padding:12px 8px}
.btn.secondary:after{content:"\203A";font-size:1.15em;line-height:0;transform:translateY(1px)}
.btn.secondary:hover{background:transparent;text-decoration:underline;text-underline-offset:3px}
.btn.small{font-size:14px;padding:9px 18px}

/* eyebrow */
.eyebrow{display:block;font-size:15px;font-weight:600;letter-spacing:0;text-transform:none;color:var(--accent);margin-bottom:14px}
.eyebrow:before{display:none}

/* HERO — centered, spacious */
.hero{padding:88px 0 20px;text-align:center}
.hero-grid{display:block;max-width:820px;margin:0 auto}
.hero h1{margin:0 auto;max-width:14ch}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero h1 br{display:none}
.hero .intro{font-size:21px;line-height:1.5;color:var(--sub);max-width:600px;margin:22px auto 0}
.actions{display:flex;gap:10px 28px;flex-wrap:wrap;justify-content:center;margin:30px 0 0}
.hero-caption{justify-content:center;font-size:14px;color:var(--faint);display:flex;gap:14px;align-items:center;margin-top:26px}
.hero-caption span+span{border-left:1px solid var(--line);padding-left:14px}
.visual{position:relative;margin:56px auto 0;max-width:980px;background:var(--ink);border-radius:28px;overflow:hidden;min-height:420px;color:#fff}
.visual img{width:100%;height:480px;object-fit:cover}
.visual .concept-label{position:absolute;left:28px;top:26px;border:1px solid #ffffff3a;border-radius:var(--pill);padding:6px 14px;font-size:12px;letter-spacing:.02em;color:#fff}
.visual .visual-label{position:absolute;bottom:24px;left:28px;right:28px;font-size:14px;display:flex;align-items:center;justify-content:space-between;color:#f5f5f7}
.visual-label b{color:#fff;font-weight:600}

/* journey bar — quiet centered row */
.journey-bar{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 40px;border:0;padding:40px 0 0;margin:40px auto 0;max-width:900px}
.journey-bar a{display:inline-flex;gap:10px;align-items:baseline;font-size:15px;font-weight:450;color:var(--sub);border:0;padding:0}
.journey-bar a:hover{color:var(--accent)}
.journey-bar span{font-size:14px;font-weight:600;color:var(--accent)}

/* sections */
.section{padding:100px 0}
.section:nth-of-type(even){background:var(--bg2)}
.section-head{text-align:center;max-width:720px;margin:0 auto 54px}
.section-head .eyebrow{margin-bottom:12px}
.section-head h2 br{display:none}
.section-head p{color:var(--sub);font-size:19px;margin:16px auto 0;max-width:600px}
.section-head .text-link{display:inline-block;margin-top:20px}
.text-link{font-size:17px;color:var(--accent);font-weight:450}
.text-link:after{content:"\203A";margin-left:5px;font-size:1.1em}
.text-link:hover{text-decoration:underline;text-underline-offset:3px}

/* tiles */
.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.topic-card{background:var(--bg);border:0;border-radius:var(--r);padding:34px 32px;display:flex;flex-direction:column;min-height:300px;transition:transform .25s ease}
.section:nth-of-type(even) .topic-card{background:var(--bg)}
.section:nth-of-type(odd) .topic-card{background:var(--bg2)}
.topic-card:hover{transform:translateY(-5px)}
.topic-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px}
.icon{width:34px;height:34px;color:var(--accent)}
.index{font-size:13px;color:var(--faint)}
.topic-card h3{font-size:22px}
.topic-card p{font-size:16px;color:var(--sub);line-height:1.5;margin:12px 0 24px}
.card-meta{font-size:14px;color:var(--accent);margin-top:auto;display:flex;justify-content:space-between;border-top:1px solid var(--line2);padding-top:16px}

/* feature — large light tile */
.feature{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:0;background:var(--bg2);color:var(--ink);border-radius:var(--r);overflow:hidden}
.feature-content{padding:60px}
.feature-content .eyebrow{color:var(--accent)}
.feature-content h2{font-size:clamp(28px,3.4vw,40px)}
.feature-content p{color:var(--sub);margin:20px 0 28px;font-size:18px}
.feature .btn{background:var(--accent);border:0;color:var(--on-accent)}
.feature-diagram{padding:40px;display:flex;align-items:center;justify-content:center}
.diagram{width:100%;height:auto;max-width:360px}
.diagram-note{font-size:13px;color:var(--faint);margin-top:14px;text-align:center}

/* path */
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.path-item{background:var(--bg2);border-radius:var(--r);padding:34px 30px}
.section:nth-of-type(even) .path-item{background:var(--bg)}
.path-item span{color:var(--accent);font-size:13px;font-weight:600}
.path-item h3{margin:16px 0 12px;font-size:21px}
.path-item p{color:var(--sub);font-size:16px}
.path-item .text-link{font-size:15px;margin-top:14px;display:inline-block}

/* faq */
.faq-grid{max-width:760px;margin:0 auto;display:block}
.faq-intro{text-align:center;margin-bottom:40px}
.faq-intro p{font-size:19px;color:var(--sub);margin-top:16px}
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;padding:24px 34px 24px 0;font-size:19px;font-weight:500;position:relative;list-style:none}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";position:absolute;right:2px;top:22px;color:var(--accent);font-size:26px;font-weight:300}
details[open] summary:after{content:"\2212"}
details p{font-size:17px;color:var(--sub);padding-right:30px;margin-bottom:22px}
details a,.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}

/* trust + footer */




.footer{background:var(--bg);color:var(--sub);padding:56px 0 30px;border-top:1px solid var(--line2)}
.footer .brand{color:var(--ink)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer h3{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:16px;letter-spacing:0}
.footer a:not(.brand){display:block;font-size:15px;margin:9px 0;color:var(--sub)}
.footer a:hover{color:var(--accent)}
.footer p{font-size:14px;margin-top:16px;max-width:300px;color:var(--faint)}
.footer-bottom{border-top:1px solid var(--line2);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;gap:30px;font-size:12px;color:var(--faint)}

/* article pages */
.breadcrumb{font-size:14px;color:var(--faint);display:flex;gap:9px;flex-wrap:wrap;padding:28px 0}
.breadcrumb a:hover{color:var(--accent)}
.article-heading{padding:14px 0 48px;max-width:820px;margin:0 auto;text-align:center}
.article-heading h1{font-size:clamp(34px,5vw,60px)}
.article-heading .intro{font-size:21px;color:var(--sub);margin:22px auto 0;max-width:640px}
.metadata{justify-content:center;display:flex;gap:10px 22px;font-size:14px;color:var(--faint);flex-wrap:wrap;margin-top:22px}
.article-layout{display:grid;grid-template-columns:240px minmax(0,680px);gap:72px;align-items:start;max-width:1040px;margin:0 auto;padding-bottom:90px}
.toc{position:sticky;top:96px;background:var(--bg2);border:0;border-radius:var(--r-sm);padding:26px;font-size:15px}
.toc h2{font-size:14px;font-weight:600;letter-spacing:0;margin-bottom:14px;color:var(--faint)}
.toc a{display:block;padding:7px 0;color:var(--sub)}
.toc a:hover{color:var(--accent)}
.toc .pillar-back{border-top:1px solid var(--line);margin-top:14px;padding-top:16px;color:var(--accent);font-weight:500}
.prose{font-size:19px;line-height:1.6}
.prose h2{font-size:34px;margin:52px 0 20px;letter-spacing:-.02em}
.prose h3{margin:30px 0 12px;font-size:23px}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin-bottom:11px}
.prose section:first-child h2{margin-top:0}
.direct-answer{border:0;background:var(--bg2);border-radius:var(--r-sm);padding:22px 26px;margin:24px 0}
.direct-answer>span{display:block;font-size:13px;font-weight:600;color:var(--accent);margin-bottom:8px}
.prose .direct-answer p{margin:0}
.callout{background:var(--bg2);border:0;border-left:3px solid var(--accent);border-radius:0 var(--r-sm) var(--r-sm) 0;padding:22px 26px;margin:26px 0;font-size:17px}
.callout.warning{border-left-color:#bf4800}
.callout p:last-child{margin:0}
.article-figure{padding:28px;background:var(--bg2);border:0;border-radius:var(--r-sm);margin:28px 0}
.article-figure figcaption{font-size:13px;color:var(--faint);margin-top:14px}
.hub-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:26px 0}
.hub-link{border:0;background:var(--bg2);border-radius:var(--r-sm);padding:20px;display:block!important}
.hub-link strong{display:block;font-size:17px;margin:7px 0}
.hub-link span{font-size:13px;color:var(--faint)}
.hub-link:hover{background:var(--line2)}
.related{border-top:1px solid var(--line2);margin-top:40px;padding-top:30px}
.related .topics{grid-template-columns:repeat(2,1fr)}
.related .topic-card{padding:26px;min-height:0}
.related .topic-top{margin-bottom:14px}
.related .icon{width:28px;height:28px}
.related h3{font-size:20px;margin:0}
.related p{margin:12px 0;font-size:15px}
.sources{margin-top:40px;padding:30px;background:var(--bg2);border:0;border-radius:var(--r-sm);font-size:15px}
.sources h2{font-size:22px;margin:0 0 16px}
.sources p{font-size:14px;color:var(--sub);margin:16px 0 0}
.sources a{color:var(--accent);display:block;margin:9px 0}
.source-list{padding-left:20px}
.review-status{margin-top:24px;padding:20px;background:var(--bg);border-radius:var(--r-sm)}
.source-method summary{font-size:16px;padding:16px 0}
.table-scroll{overflow-x:auto;margin:26px 0}
table{border-collapse:collapse;width:100%;font-size:16px}
th,td{padding:16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:600;color:var(--ink)}
td{color:var(--sub)}
.checklist label{display:flex;gap:13px;padding:18px;border-bottom:1px solid var(--line);cursor:pointer;font-size:17px}
.checklist input{accent-color:var(--accent);width:20px;height:20px;flex-shrink:0;margin-top:3px}
.checklist input:checked+span{text-decoration:line-through;color:var(--faint)}
.doctor-symbol{border-radius:50%;width:64px;height:64px}
.not-found{text-align:center;padding:120px 0}
.print-button{background:var(--bg2);color:var(--accent)}
.skip{position:absolute;left:20px;top:-80px;z-index:100;background:#fff;padding:12px;border-radius:8px}
.skip:focus{top:12px}
[hidden]{display:none!important}

@media(max-width:900px){
.header-inner{padding:0 20px;gap:18px}
.nav{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(255,255,255,.98);flex-direction:column;gap:0;padding:8px 24px 18px;border-bottom:1px solid var(--line2)}
.nav.open{display:flex}.nav a{padding:12px 0;border-bottom:1px solid var(--line2)}
.menu-toggle{display:block;margin-left:auto}
.header-inner>.btn{display:none}
.feature{grid-template-columns:1fr}.feature-content{padding:40px 32px}.feature-diagram{padding:0 32px 40px}
.article-layout{grid-template-columns:1fr;gap:0}.toc{position:static;margin-bottom:36px}
}
@media(max-width:760px){
body{font-size:18px}
.section{padding:64px 0}
.hero{padding:52px 0 0}
.visual img{height:300px}.visual{min-height:300px}
.topics,.path-grid{grid-template-columns:1fr;gap:16px}
.related .topics{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}
.footer-bottom{display:block}.footer-bottom span{display:block;margin:7px 0}

.hero-caption{flex-wrap:wrap}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{.header,.topline,.footer,.toc,.related,.print-button,.journey-bar{display:none}.article-layout{display:block}.wrap{padding:0}a{color:#000!important}}