*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#071222;color:#e6edf4;font-family:Arial,Helvetica,sans-serif;font-size:18px;line-height:1.65}a{color:#7cdbe0;text-underline-offset:.2em}a:hover{color:#fff}a:focus-visible,button:focus-visible{outline:3px solid #e9c672;outline-offset:5px}header,main,footer{max-width:1160px;margin:auto;padding:0 28px}header{display:flex;gap:24px;align-items:center;justify-content:space-between;padding-top:24px;padding-bottom:24px;border-bottom:1px solid #294156}nav{display:flex;gap:22px;flex-wrap:wrap;font-size:16px}.brand{color:#fff;text-decoration:none;font-weight:700;letter-spacing:.07em;font-size:18px}.eyebrow{color:#e2bd70;text-transform:uppercase;letter-spacing:.16em;font-size:14px;font-weight:700;margin-bottom:20px}.hero{padding:64px 0 48px;max-width:1000px}h1,h2{font-family:Georgia,'Times New Roman',serif;line-height:1.12;font-weight:400;color:#fff}h1{font-size:clamp(2.5rem,5.5vw,4.7rem);margin:0 0 28px;letter-spacing:-.035em}h2{font-size:clamp(1.8rem,3.8vw,2.7rem);margin:0 0 24px}h3{font-size:1.15rem;line-height:1.3;margin:0 0 16px;color:#fff}.lead{font-size:1.3rem;line-height:1.55;max-width:880px}.muted,figcaption{color:#bbcad7}.quote{font-size:clamp(1.7rem,3.2vw,2.35rem);font-family:Georgia,serif;line-height:1.25;border-left:4px solid #65d0d4;margin:34px 0 22px;padding:8px 0 8px 24px;color:#fff}.actions{display:flex;gap:14px;flex-wrap:wrap;margin:28px 0}.button,button{display:inline-block;padding:11px 19px;border:1px solid #527789;border-radius:5px;background:transparent;color:#ecf8fc;font-size:16px;line-height:1.5;text-decoration:none;font-family:inherit;cursor:pointer}.button.primary{background:#9be0df;color:#072c3c;border-color:#9be0df;font-weight:700}.button:hover,button:hover{background:#163950;color:#fff}.section{padding:50px 0;border-top:1px solid #294156}.anchor{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}.big{font-size:clamp(3.5rem,7vw,5.8rem);line-height:1.07;color:#9be0df;font-weight:700;letter-spacing:-.05em}.statlabel{font-size:1.2rem;color:#fff}.callout{background:#112b40;border-left:3px solid #dfba67;padding:22px 26px;margin:26px 0}.callout p:first-child{margin-top:0}.callout p:last-child{margin-bottom:0}.columns{display:grid;grid-template-columns:1fr 1fr;gap:40px}p{margin:0 0 20px}figure{margin:30px 0 0}figure img{display:block;width:100%;height:auto;background:white;border-radius:8px}figcaption{font-size:16px;line-height:1.55;margin:16px 0}.figlinks{display:flex;gap:20px;flex-wrap:wrap;font-size:16px;margin-top:14px}.tablewrap{overflow-x:auto;border:1px solid #365268;border-radius:6px;margin:26px 0}table{border-collapse:collapse;width:100%;min-width:600px;font-size:16px}th,td{text-align:left;padding:17px 18px;vertical-align:top;border-bottom:1px solid #294156}th{background:#16354a;color:#fff;font-weight:700}tr:last-child td{border-bottom:none}tbody tr:nth-child(2n){background:#0c1f31}.numeric{text-align:right;font-variant-numeric:tabular-nums}.sources{padding-left:24px;font-size:16px}.sources li{padding-left:8px;margin:0 0 22px;overflow-wrap:anywhere}.sources b{color:#fff}.source-note{display:block;color:#b8cad9;font-size:15px;margin-top:4px}.small{font-size:16px;color:#c3d1dc}.downloadgrid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.download{padding:22px;background:#10283c;border:1px solid #365268;border-radius:6px}.download p{margin-bottom:10px}.row{display:grid;grid-template-columns:270px 1fr 135px;gap:22px;align-items:center;margin:28px 0}.track{height:32px;background:#122c40;border-radius:3px;overflow:hidden}.bar{height:100%;width:var(--width);background:#67cbd1;transform-origin:left}.bar.gold{background:#dfbc6c}.amount{font-size:22px;font-weight:bold;font-variant-numeric:tabular-nums;text-align:right}.bar.animate{animation:grow 1s ease both}@keyframes grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}.footnote{font-size:15px;color:#b8cad9}footer{padding-top:38px;padding-bottom:48px;border-top:1px solid #294156;font-size:15px;color:#b8cad9}.skip{position:absolute;left:-9999px}.skip:focus{left:20px;top:10px;background:#10283c;padding:10px;z-index:10}@media(max-width:700px){body{font-size:17px}header{align-items:flex-start;flex-direction:column;gap:14px}header,main,footer{padding-left:20px;padding-right:20px}.hero{padding-top:40px}.anchor,.columns,.downloadgrid{grid-template-columns:1fr;gap:22px}.section{padding:36px 0}.row{grid-template-columns:1fr 100px;gap:10px}.row .track{grid-column:1/3;grid-row:2}.amount{font-size:21px}.big{font-size:3.7rem}.lead{font-size:1.14rem}.quote{padding-left:17px}nav{gap:17px;font-size:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.bar.animate{animation:none}}@media print{body{background:#fff;color:#17344b}h1,h2,h3,.statlabel,.sources b{color:#17344b}a{color:#17646c}header,nav,.actions,button{display:none}.hero{padding-top:0}.section{break-inside:avoid}.muted,.small,figcaption,.source-note,footer{color:#415769}}
:root{--navy:#09152e;--surface:#132442;--teal:#64edd1;--coral:#ffad94;--gold:#ffdc87;--violet:#c6b4ff;--ink:#f5f8ff;--muted:#c1cee3}
body{background:radial-gradient(ellipse at 80% 0%,#183665 0,transparent 32rem),radial-gradient(ellipse at 0% 34%,#182b48 0,transparent 50rem),var(--navy);color:var(--ink);font-family:Arial,Helvetica,sans-serif}
header,main,footer{max-width:1240px}header{border-color:#354665;padding-top:26px;padding-bottom:26px}nav{font-size:16px;gap:18px}nav a[aria-current]{color:var(--ink);text-decoration-color:var(--teal);text-decoration-thickness:3px}.brand{font-size:16px;color:var(--teal)}a{color:var(--teal)}a:hover{color:#fff}h1,h2{font-family:Georgia,'Times New Roman',serif}h1{font-size:clamp(2.6rem,4.5vw,4.5rem);letter-spacing:-.045em}h2{font-size:clamp(2.1rem,3.8vw,3.2rem)}h3{font-size:1.3rem}.eyebrow{color:var(--gold);font-size:14px;letter-spacing:.13em}.lead{color:#d3dff2}.muted,.small,.footnote,figcaption,.source-note{color:var(--muted)}.ink-teal{color:var(--teal)}.ink-coral{color:var(--coral)}.ink-violet{color:var(--violet)}.ink-gold{color:var(--gold)}.section{padding:68px 0;border-color:#354665}.hero{max-width:none}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;align-items:center;gap:48px;padding:64px 0}.hero-grid .lead{font-size:1.18rem}.hero-data{position:relative;display:flex;flex-direction:column;gap:22px;border:1px solid #3f7290;border-radius:26px;padding:38px 32px;background:linear-gradient(145deg,#164b59,#173355 60%,#2b2750);text-decoration:none;box-shadow:0 24px 65px #0003}.hero-data .eyebrow{margin:0}.hero-number{font-size:clamp(5rem,9vw,8rem);line-height:.86;color:var(--teal);letter-spacing:-.07em}.hero-number span{display:block;font-size:.48em;letter-spacing:-.04em;margin-top:12px}.prevalence-chip{display:inline-block;border-radius:8px;background:#0a263db3;padding:10px 14px;color:white;font-size:17px;font-weight:bold}.hero-data .small{font-size:15px}.source-link{display:block;color:var(--teal);font-size:15px;line-height:1.5;margin-top:12px}.hero-data .source-link{padding-top:20px;border-top:1px solid #7092aa55}.graphic-link{text-decoration:none;color:var(--ink);transition:border-color .2s,background-color .2s,box-shadow .2s}.graphic-link:hover{color:white;border-color:var(--teal);box-shadow:0 0 0 1px #64edd15c}.graphic-link:focus-visible{outline:3px solid var(--gold);outline-offset:5px}.button{border-radius:9px;border-color:#809bb8}.button.primary{background:var(--teal);border-color:var(--teal);color:#082a35}.button:hover{background:#21486a}.section-head{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:end;margin-bottom:34px}.section-head h2{margin-bottom:0}.section-head>p{margin:0}.burden-flow{display:grid;grid-template-columns:1fr 1.3fr;gap:0;background:linear-gradient(110deg,#28234a,#182b4c);border:1px solid #665591;border-radius:20px;margin:30px 0;overflow:hidden}.burden-flow>a{display:flex;flex-direction:column;padding:30px 34px}.burden-flow .eyebrow{color:var(--violet);margin:0}.medium-number{font-size:clamp(3.6rem,6vw,5.8rem);line-height:1.1;letter-spacing:-.055em;margin:10px 0 16px;display:block;font-variant-numeric:tabular-nums}.flow-statement{display:flex;flex-direction:column;justify-content:center;padding:34px;border-left:1px solid #665591;background:#07162e40}.flow-statement strong{font-size:1.7rem;line-height:1.25;margin-bottom:18px}.flow-arrow{color:var(--violet);font-size:2rem;line-height:1.5}.outcome-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:28px 0 20px}.outcome-panel{display:flex;flex-direction:column;border:1px solid #654958;border-radius:20px;padding:30px 32px}.coral-panel{background:linear-gradient(130deg,#3e253c,#182842)}.gold-panel{background:linear-gradient(130deg,#3f3426,#182842);border-color:#716145}.teal-panel{background:linear-gradient(130deg,#16444b,#182842);border-color:#3e7074}.violet-panel{background:linear-gradient(130deg,#332c58,#182842);border-color:#72619a}.outcome-panel .eyebrow{margin:0}.range-chart{margin:34px 0 0}.range-line{height:6px;background:#71819a55;position:relative;margin:10px 0 22px;border-radius:5px}.range-line>span{height:22px;position:absolute;top:-8px;border-radius:8px}.ticks{display:flex;justify-content:space-between;color:#c6d2e6;font-size:14px}.natural-history{display:grid;grid-template-columns:1.1fr .8fr .8fr;gap:24px;background:linear-gradient(140deg,#172945,#241f3c);border:1px solid #647088;border-radius:20px;padding:34px;margin:42px 0 20px}.natural-history h3{font-size:1.5rem;line-height:1.25}.metric-donut{display:flex;align-items:center;flex-direction:column;justify-content:center;text-align:center;border:1px solid transparent;border-radius:12px;padding:8px}.donut{width:168px;height:168px;border-radius:50%;background:conic-gradient(var(--ring) var(--rate),#34415c 0);display:grid;place-items:center;margin-bottom:22px}.donut strong{display:grid;place-content:center;grid-auto-flow:column;align-items:baseline;width:137px;height:137px;border-radius:50%;background:#17253e;color:var(--ring);font-size:3.5rem;line-height:137px;letter-spacing:-.05em}.donut strong span{font-size:1.7rem}.metric-donut .small{font-size:14px}.metric-donut b{font-size:18px}.metric-donut .source-link{font-size:14px}.chronic{background:linear-gradient(130deg,#12353d66,#29274466);border:1px solid #426675;border-radius:24px;margin:0 -24px;padding:44px 24px}.chronic .quote{border:none;padding:0;margin:12px 0 25px;font-size:clamp(2rem,4vw,3.5rem);color:var(--teal)}.state-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:32px 0}.state-card{border:1px solid #627186;border-radius:15px;padding:26px;display:flex;flex-direction:column}.state-number{font-size:2rem;color:#ffffff99;margin-bottom:18px}.state-card .source-link{margin-top:auto}.state-card p{font-size:16px}.anchor{margin-top:38px}.big{color:var(--teal)}.anchor .big{font-size:clamp(3.5rem,6vw,5.4rem)}.callout{border-left:4px solid var(--gold);background:linear-gradient(110deg,#253747,#182b44);border-radius:0 12px 12px 0}.infection-graphic{display:block;border:1px solid #478686;border-radius:20px;padding:30px;margin:28px 0 38px;background:linear-gradient(135deg,#113b43,#182842)}.infection-graphic .section-head{grid-template-columns:1fr auto;margin-bottom:25px}.infection-graphic h3{margin:0;font-size:1.6rem}.scenario-label{font-size:14px;color:var(--gold);border:1px solid #7a704f;border-radius:20px;padding:5px 13px}.stack-label{display:flex;justify-content:space-between;gap:15px;font-size:16px;margin:15px 0 10px}.stack{display:flex;height:67px;border-radius:10px;overflow:hidden}.stack>span{display:grid;place-items:center;font-size:22px;font-weight:bold;color:white;min-width:0}.retained{background:#167d7d}.infected{background:#896323}.returned{background:#436b99}.nonreturn{background:#944c47}.stack-transition{text-align:center;padding:20px 0;color:var(--gold);font-size:18px}.legend{display:flex;gap:24px;flex-wrap:wrap;margin:18px 0;font-size:15px}.legend>span{display:flex;align-items:center;gap:9px}.legend i{display:block;width:14px;height:14px;border-radius:3px}.recurrence-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;margin:32px 0}.recurrence-chart,.reintervention{display:block;padding:30px;border-radius:20px;border:1px solid #76689b}.recurrence-bars{height:320px;display:flex;gap:30px;justify-content:center;align-items:flex-end;padding:40px 15px 30px;border-bottom:1px solid #7d7898;margin-bottom:25px}.recurrence-bars>div{height:100%;display:flex;flex:1;max-width:110px;flex-direction:column;justify-content:flex-end;align-items:center;position:relative}.recurrence-bars strong{font-size:24px;margin-bottom:10px}.column-bar{display:block;width:100%;background:linear-gradient(#c6b4ff,#7561bb);border-radius:10px 10px 0 0;min-height:1px;flex-shrink:0}.recurrence-bars b{position:absolute;bottom:-33px;font-size:16px}.reintervention{border-color:#54888e;display:flex;flex-direction:column;justify-content:center}.reintervention .eyebrow{margin-bottom:0}.reintervention .medium-number{font-size:4.5rem}.reintervention h3{font-size:1.45rem}.reintervention .small{font-size:15px}figure img{border:1px solid #638095;border-radius:15px;box-shadow:0 20px 60px #0002}.figlinks{margin-top:22px;gap:22px}.figlinks a{font-weight:bold}.download{border-radius:16px;background:linear-gradient(140deg,#1b3c4d,#1b2949);padding:28px}.new-downloads{margin-top:24px}.bundle-link{margin-top:28px}.sources{columns:2;column-gap:45px}.sources li{break-inside:avoid;border-bottom:1px solid #364760;padding-bottom:20px}.risk-link{display:flex;flex-direction:column;gap:6px;margin-top:28px}.bar{background:linear-gradient(90deg,#249da4,#64edd1)}.bar.gold{background:linear-gradient(90deg,#be9244,#ffdc87)}.track{background:#26354e}.row{grid-template-columns:270px 1fr 135px}.amount{color:var(--teal)}.tablewrap{border-radius:14px}th{background:#224559}.downloadgrid{gap:24px}
@media(max-width:1000px){.hero-grid{gap:28px;grid-template-columns:1.15fr .85fr}.hero-data{padding:30px 24px}.natural-history{grid-template-columns:1fr 1fr}.natural-history>div:first-child{grid-column:1/-1}.state-grid{gap:14px}.state-card{padding:22px}.state-card h3{font-size:1.15rem}.sources{columns:1}}
@media(max-width:720px){.hero-grid,.section-head,.burden-flow,.outcome-grid,.recurrence-grid,.state-grid{grid-template-columns:1fr}.hero-grid{padding:40px 0;gap:26px}.hero-number{font-size:6rem}.hero-number span{display:inline;font-size:.5em;margin-left:12px}.hero-data{gap:16px}.hero-grid h1{font-size:2.8rem}.section{padding:44px 0}.section-head{gap:22px}.burden-flow>a{padding:26px}.flow-statement{border-left:0;border-top:1px solid #665591;padding:26px}.outcome-panel{padding:26px}.natural-history{padding:22px;gap:18px}.donut{width:130px;height:130px}.donut strong{width:106px;height:106px;line-height:106px;font-size:2.75rem}.metric-donut{padding:0}.metric-donut b{font-size:16px}.chronic{margin:0;padding:28px 20px}.chronic .quote{font-size:2rem}.state-card{padding:24px}.state-card h3{font-size:1.3rem}.infection-graphic{padding:22px}.infection-graphic .section-head{grid-template-columns:1fr;gap:15px}.scenario-label{justify-self:start}.stack-label{flex-direction:column;gap:4px}.stack>span{font-size:17px}.stack{height:57px}.stack-transition{font-size:16px}.recurrence-bars{height:275px;gap:24px}.row{grid-template-columns:1fr 100px}.sources{padding-left:20px}.source-link{font-size:14px}.section.anchor{margin-top:24px}.range-chart{margin-top:28px}}
@media(max-width:390px){.natural-history{grid-template-columns:1fr}.natural-history>div:first-child{grid-column:auto}.metric-donut{padding:18px 0}.hero-number{font-size:5rem}.hero-number span{font-size:.45em}.hero-grid h1{font-size:2.4rem}.stack>span{font-size:15px}}
@media(prefers-reduced-motion:reduce){.graphic-link{transition:none}}
@media print{body{background:white}.hero-data,.outcome-panel,.natural-history,.state-card,.chronic,.infection-graphic,.recurrence-chart,.reintervention{background:#edf2f8;color:#132442;box-shadow:none}.ink-coral{color:#8c3026}.ink-teal,.hero-number{color:#056363}.ink-violet{color:#5d418a}.ink-gold{color:#7d5b0c}.source-link,.small,.footnote,.lead{color:#364761}.hero-grid{display:block}.sources{columns:1}}

.hero-principle{border-left:3px solid var(--teal);padding:4px 0 4px 18px;color:var(--teal);font-size:1.05rem;line-height:1.5;max-width:580px}

/* Source-labeled prevalence range, September 2026 */
.benchmark-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:28px 0}.benchmark{display:flex;flex-direction:column;gap:10px;padding:28px;border:1px solid #55718a;border-radius:18px;background:#12353f;color:#f8fbff;text-decoration:none}.benchmark:nth-child(2){background:#252943}.benchmark strong{font-size:clamp(32px,4vw,55px);line-height:1.12;color:#5ee8d0}.benchmark:nth-child(2) strong{color:#beacff}.benchmark p{color:#d4e3ed;font-size:16px;line-height:1.55}.benchmark .source-link{margin-top:auto}.benchmark .eyebrow{color:#cee4ea}.pad-context{margin-top:30px;padding:24px 0;border-top:1px solid #536579}.range-table{width:100%;min-width:660px}.range-table caption{text-align:left;padding:0 0 15px;font-weight:700}.range-table td{font-variant-numeric:tabular-nums}.range-table th[scope=row]{text-align:left}.range-table th a{color:inherit;text-decoration:underline}.scenario-hero{padding-bottom:12px!important}.scenario-hero h1{font-size:clamp(36px,5vw,62px)}.scenario-workspace{padding-top:24px!important}.scenario-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;margin:20px 0}.scenario-controls label{display:flex;flex-direction:column;gap:12px;font-weight:700}.scenario-controls output{font-size:34px;color:#5ee8d0}.scenario-controls input{width:100%;accent-color:#14b8a6;min-height:28px}.scenario-controls .small{font-weight:400}.scenario-workspace [data-remain]{font-weight:800;color:#5ee8d0}.scenario-workspace button{padding:12px 20px;border-radius:8px;border:1px solid currentColor;background:transparent;color:inherit;font:inherit;cursor:pointer}a:focus-visible,input:focus-visible,button:focus-visible{outline:3px solid #ffd369;outline-offset:4px}@media(max-width:700px){.benchmark-grid,.scenario-controls{grid-template-columns:1fr}.benchmark{padding:22px}.range-table{font-size:14px}}