@font-face{font-family:'Instrument Sans';src:url(instrument-sans-latin-400-normal.woff2) format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Instrument Sans';src:url(instrument-sans-latin-500-normal.woff2) format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Instrument Sans';src:url(instrument-sans-latin-600-normal.woff2) format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Instrument Sans';src:url(instrument-sans-latin-700-normal.woff2) format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'Fraunces';src:url(fraunces-latin-500-normal.woff2) format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Fraunces';src:url(fraunces-latin-600-normal.woff2) format('woff2');font-weight:600;font-style:normal;font-display:swap}
/* Layout: one calm reading column of large type on a white page with soft sea-glass bands.
   Home opens with why screening matters, then shows how simple it is, then the step-by-step guide. */
:root{
  --bg:#FFFFFF; --band:#EEF6F4; --band2:#F3F7FB; --ink:#12293A; --muted:#45606E; --line:#D3E2E2; --card:#FFFFFF;
  --accent:#0C716C; --accent-ink:#FFFFFF; --accent-soft:#DCF0EC; --sky:#2F6FA8;
  --warn:#A8001C; --warn-soft:#FCEBEE; --deep:#0F3240; --deep-ink:#FFFFFF; --deep-btn:#8FD6CB;
  --f-body:'Instrument Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --f-head:'Fraunces',Georgia,'Times New Roman',serif;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-padding-top:20px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:20px;line-height:1.6}
.wrap{max-width:1080px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.read{max-width:780px}
h1,h2,h3{text-wrap:balance;margin:0;line-height:1.15}
h1{font-family:var(--f-head);font-weight:600;font-size:clamp(34px,5.2vw,54px);letter-spacing:-.3px}
h2{font-family:var(--f-head);font-weight:600;font-size:clamp(26px,3.2vw,34px)}
h3{font-size:21px;font-weight:700}
p,ul,ol{margin:0}
ul.list{padding-left:1.2em;display:flex;flex-direction:column;gap:8px}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:6px}


header{border-bottom:1px solid var(--line);background:var(--bg)}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:14px}
.brand{display:flex;flex-direction:column;text-decoration:none;color:var(--ink);line-height:1.1}
.brand b{font-family:var(--f-head);font-weight:600;font-size:26px;letter-spacing:-.2px}
.brand small{font-size:14px;color:var(--accent);font-weight:600;letter-spacing:.3px}
.hright{display:flex;align-items:center;gap:20px}
nav.top{display:flex;gap:18px;font-size:16px;font-weight:600}
nav.top a{color:var(--ink);text-decoration:none;padding-block:4px;border-bottom:3px solid transparent;white-space:nowrap}
nav.top a:hover{color:var(--accent)}
nav.top a[aria-current="page"]{border-bottom-color:var(--accent)}
.lang{font-size:15px;font-weight:700;text-decoration:none;border:2px solid var(--line);border-radius:999px;padding:6px 14px;white-space:nowrap;color:var(--ink)}
.lang:hover{border-color:var(--accent)}
.mnav{display:none;position:relative}
.mnav summary{list-style:none;cursor:pointer;font-weight:700;font-size:17px;padding:9px 14px;border:2px solid var(--line);border-radius:10px;min-height:44px}
.mnav summary::-webkit-details-marker{display:none}
.mnav .menu{position:absolute;right:0;top:calc(100% + 8px);z-index:20;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px rgba(18,41,58,.15);padding:8px;display:flex;flex-direction:column;min-width:240px}
.mnav .menu a{padding:11px 14px;color:var(--ink);text-decoration:none;font-weight:600}
.btn{display:inline-flex;align-items:center;gap:8px;font:inherit;font-weight:700;font-size:18px;background:var(--accent);color:var(--accent-ink);border:0;border-radius:999px;padding:13px 24px;cursor:pointer;text-decoration:none;min-height:52px}
.btn:hover{filter:brightness(1.1)}
.btn.ghost{background:transparent;color:var(--accent);border:2px solid var(--accent)}


/* home */
.hero{background:linear-gradient(180deg,var(--band) 0%,var(--bg) 100%);padding-block:56px 40px}
.hero .wrap{display:flex;flex-direction:column;gap:22px}
.hero h1{max-width:20ch}
.lead{font-size:22px;color:var(--muted);max-width:46ch}
.ctas{display:flex;flex-wrap:wrap;gap:12px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:8px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;display:flex;flex-direction:column;gap:4px}
.stat b{font-family:var(--f-head);font-weight:600;font-size:36px;line-height:1.1;color:var(--accent)}
.stat span{font-size:17px;color:var(--muted);line-height:1.4}
.figure{padding-block:8px 48px}
.cdcimg{display:block;width:100%;height:auto;border-radius:16px}
figcaption{font-size:15px;color:var(--muted);margin-top:8px}

.simple{background:var(--band);padding-block:52px}
.simple .wrap{display:flex;flex-direction:column;gap:26px}
.three{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.three div{display:flex;flex-direction:column;gap:8px}
.three h3{font-family:var(--f-head);font-weight:600;font-size:25px;color:var(--accent)}
.three p{font-size:18px;color:var(--muted);line-height:1.5}
.video{display:grid;grid-template-columns:minmax(0,300px) minmax(0,1fr);gap:22px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;text-decoration:none;color:var(--ink)}
.vthumb{aspect-ratio:16/9;width:100%;padding:0;border:0;cursor:pointer;border-radius:10px;background:var(--deep);display:grid;place-items:center}
.vthumb i{width:62px;height:62px;border-radius:50%;background:var(--deep-btn);display:grid;place-items:center}
.vthumb i::after{content:"";border-left:20px solid var(--deep);border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:5px}
.video iframe{display:block;width:100%;aspect-ratio:16/9;border:0;border-radius:10px}
.expert{padding-block:8px 52px}
.expert .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:28px;align-items:center}
.etxt{display:flex;flex-direction:column;gap:12px;min-width:0}
.etxt p{font-size:18px;color:var(--muted)}
.etxt .who{font-size:16px;color:var(--ink);border-left:4px solid var(--accent);padding-left:14px}
.expert .video{grid-template-columns:1fr;padding:12px}
@media (max-width:820px){.expert .wrap{grid-template-columns:1fr}}
.video video{display:block;width:100%;aspect-ratio:16/9;border-radius:10px;background:var(--deep)}
.video div{display:flex;flex-direction:column;gap:6px;min-width:0}
.video small{font-size:14px;color:var(--muted);font-weight:600;letter-spacing:.5px;text-transform:uppercase}
.video p{font-size:17px;color:var(--muted);line-height:1.45}

.path{padding-block:52px}
.path .wrap{display:flex;flex-direction:column;gap:24px}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
@media (max-width:820px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.steps{grid-template-columns:1fr}}
.steps a{display:flex;flex-direction:column;gap:10px;height:100%;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;text-decoration:none;color:var(--ink)}
.steps a:hover{border-color:var(--accent)}
.n{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:19px;flex:0 0 auto;background:var(--accent-soft);color:var(--accent)}
.steps p{font-size:17px;color:var(--muted);line-height:1.45}
.steps .warnc a{border-color:var(--warn)} .steps .warnc .n{background:var(--warn-soft);color:var(--warn)}

.doctor{background:var(--band2);border-radius:16px;padding:22px 24px;display:flex;flex-direction:column;gap:6px}
.doctor h3{color:var(--sky)}
.doctor p{font-size:18px}

/* topic pages */
.topic{padding-block:44px 52px}
.topic .wrap{display:flex;flex-direction:column;gap:28px}
.thead{display:flex;align-items:center;gap:16px}
.thead .n{width:50px;height:50px;font-size:21px}
.kicker{font-size:14px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--accent)}
.warnp .kicker{color:var(--warn)} .warnp .thead .n{background:var(--warn-soft);color:var(--warn)}
.block{display:flex;flex-direction:column;gap:12px}
.muted{color:var(--muted)}
.timeline{list-style:none;padding:0;display:flex;flex-direction:column}
.timeline li{display:grid;grid-template-columns:170px 1fr;gap:18px;padding-block:14px;border-top:1px solid var(--line)}
.timeline li:last-child{border-bottom:1px solid var(--line)}
.timeline .when{font-weight:700;color:var(--accent)}
.note{border-radius:12px;padding:16px 18px;font-size:18px;background:var(--accent-soft)}
.alert{background:var(--warn-soft);border-left:6px solid var(--warn);border-radius:10px;padding:18px 20px;display:flex;flex-direction:column;gap:8px}
.alert h3{color:var(--warn)}
.tablewrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:18px;min-width:520px}
th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:14px;letter-spacing:.5px;text-transform:uppercase;color:var(--muted)}
td b{white-space:nowrap}
tr.np td{color:var(--muted)}
.qa{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.qa details{border-bottom:1px solid var(--line)}
.qa summary{cursor:pointer;font-weight:700;padding-block:16px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";color:var(--accent);font-size:26px;line-height:1}
.qa details[open] summary::after{content:"–"}
.qa details p{padding-bottom:18px;color:var(--muted)}
.meta{font-size:15px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;display:flex;flex-direction:column;gap:4px}
.pager{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-weight:700}
.pager a{text-decoration:none}

/* trusted sources */
.trusted{border-top:1px solid var(--line);padding-block:36px}
.trusted .wrap{display:flex;flex-direction:column;gap:14px}
.trusted h2{font-size:24px}
.tlinks{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:6px 28px;font-size:17px}
.tlinks a{font-weight:600}
.tlinks span{color:var(--muted)}
.trusted .fine{font-size:14px;color:var(--muted)}

.signup{background:var(--deep);color:var(--deep-ink);padding-block:52px}
.signup .wrap{display:flex;flex-wrap:wrap;gap:28px 48px;align-items:flex-start}
.signup .txt{flex:1 1 360px;min-width:0;display:flex;flex-direction:column;gap:12px}
.signup .txt p{opacity:.9}
.signup form{flex:1 1 380px;min-width:0;display:flex;flex-direction:column;gap:14px}
.signup label.f{font-weight:700;font-size:17px;display:flex;flex-direction:column;gap:6px}
.signup input[type=email]{font:inherit;font-size:20px;padding:14px 16px;border-radius:10px;border:2px solid transparent;min-height:56px;background:#FFFFFF;color:#12293A}
.signup .cb{display:flex;gap:12px;align-items:flex-start;font-size:17px;line-height:1.45}
.signup .cb input{width:24px;height:24px;margin-top:2px;flex:0 0 auto}
.signup .fine{font-size:15px;opacity:.85}
.signup .fine a{color:inherit}
.signup .btn{background:var(--deep-btn);color:var(--deep);align-self:flex-start}
.signup .done{font-weight:700}

footer{padding-block:34px;font-size:15px;color:var(--muted)}
footer .wrap{display:flex;flex-direction:column;gap:12px}
footer .logo img{height:22px;width:auto;display:block}
footer nav{display:flex;gap:18px;flex-wrap:wrap}
footer a{color:var(--muted)}

@media (max-width:1060px){nav.top{display:none}.mnav{display:block}}
@media (max-width:620px){
  body{font-size:19px}
  .brand b{font-size:22px}
  .hero{padding-block:36px 28px}.lead{font-size:20px}
  .timeline li{grid-template-columns:1fr;gap:2px}
  .video{grid-template-columns:1fr}
  .tlinks{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto}}
@media (max-width:420px){header .wrap{flex-wrap:wrap;gap:10px}.hright{margin-left:auto;gap:10px}}
@media (max-width:360px){h1{font-size:30px}}