:root{
  --ink:#1f1633; --muted:#5d5470; --paper:#faf8fc; --card:#fff; --line:#e4dff0;
  --purple:#583395; --orchid:#b55daa; --sky:#7fadd4; --ember:#cc4001; --olive:#667b16;
  --flu:#2f6a9c; --flu-bg:#e8f1f9; --meas:#583395; --meas-bg:#efe9f8; --heat:#a53200; --heat-bg:#fdece4;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--sans)}
img{max-width:100%;height:auto}
a{color:var(--purple);text-underline-offset:3px}
a:focus-visible,.btn:focus-visible{outline:3px solid var(--sky);outline-offset:3px;border-radius:4px}
.wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:8px;background:#fff;color:var(--ink);padding:8px 12px;z-index:10}
.skip:focus{left:8px}

/* header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:12px;padding-bottom:12px}
.brand img{display:block;width:240px;height:auto}
.nav{display:flex;align-items:center;gap:22px;font-size:.95rem}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;white-space:nowrap}
.nav a:hover,.nav a[aria-current]{color:var(--purple)}
.nav a[aria-current]{text-decoration:underline;text-decoration-thickness:2px}
.nav .lang-toggle{display:inline-flex;gap:6px;border:1.5px solid var(--purple);border-radius:999px;padding:5px 12px;font-size:.82rem;letter-spacing:.04em;color:var(--muted)}
.lang-toggle i{font-style:normal;opacity:.5}
.lang-toggle .on{color:var(--purple);font-weight:800}
.lang-toggle:hover{background:var(--meas-bg)}

/* hero */
.hero{position:relative;overflow:hidden;color:#fff;background:linear-gradient(135deg,#2e1c4a 0%,#4a3470 55%,#6a5a82 100%)}
.hero-orb{position:absolute;right:6%;top:50%;transform:translateY(-50%);width:min(34vw,330px);opacity:.28;pointer-events:none}
.hero-in{position:relative;padding-top:84px;padding-bottom:92px}
.eyebrow{margin:0 0 14px;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;font-weight:700;color:#cfc3ea}
.hero h1{margin:0 0 18px;font:700 clamp(2.3rem,6vw,3.9rem)/1.08 var(--serif);max-width:18ch}
.grad{color:#19e6c0;background:linear-gradient(90deg,#19e6a2,#1e9bf0);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lede{font-size:1.15rem;max-width:56ch;margin:0 0 28px;color:#e8e1f6}
.lede.dark{color:var(--muted)}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:0}
.btn{display:inline-block;background:#fff;color:var(--purple);font-weight:700;text-decoration:none;padding:12px 22px;border-radius:999px;border:2px solid #fff}
.btn:hover{background:#efe9f8}
.btn.ghost{background:transparent;color:#fff;border-color:#cfc3ea}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
.btn.ghost-dark{background:transparent;color:var(--purple);border-color:var(--purple)}

/* blocks */
.block{padding-top:56px;padding-bottom:56px}
.sec{font:700 1.7rem/1.2 var(--serif);margin:0 0 24px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:22px}
.card{background:var(--card);border:1px solid var(--line);border-top:5px solid var(--purple);border-radius:10px;padding:22px 22px 20px;display:flex;flex-direction:column}
.card.tag-flu{border-top-color:var(--sky)}
.card.tag-heat{border-top-color:var(--ember)}
.card.tag-measles{border-top-color:var(--orchid)}
.card h3{font:700 1.25rem/1.28 var(--serif);margin:10px 0 10px}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{color:var(--purple);text-decoration:underline}
.card p{margin:0 0 14px;color:var(--muted);font-size:.97rem}
.card .more{margin-top:auto;font-weight:700;text-decoration:none}
.card-meta{margin:0;display:flex;gap:10px;align-items:center;font-size:.85rem;color:var(--muted)}
.chip{display:inline-block;font-size:.74rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:3px 10px;border-radius:999px}
.chip-flu{color:var(--flu);background:var(--flu-bg)}
.chip-measles{color:var(--meas);background:var(--meas-bg)}
.chip-heat{color:var(--heat);background:var(--heat-bg)}
.all{margin:26px 0 0;font-weight:700}
.page-head h1{font:700 clamp(2rem,5vw,2.8rem)/1.1 var(--serif);margin:0 0 12px}

.how{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px}
.steps .num{display:inline-flex;width:34px;height:34px;border-radius:50%;background:var(--purple);color:#fff;font-weight:800;align-items:center;justify-content:center}
.steps h3{font:700 1.2rem/1.3 var(--serif);margin:12px 0 6px}
.steps p{margin:0;color:var(--muted)}

/* post */
.post{max-width:760px;padding-top:36px;padding-bottom:64px}
.back{margin:0 0 20px;font-size:.92rem;font-weight:600}
.post h1{font:700 clamp(1.9rem,4.6vw,2.7rem)/1.14 var(--serif);margin:12px 0 14px}
.dek{font-size:1.2rem;color:var(--muted);margin:0 0 14px}
.dateline{font-size:.88rem;color:var(--muted);margin:0 0 22px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.bottom{background:var(--meas-bg);border-left:5px solid var(--purple);border-radius:0 8px 8px 0;padding:16px 20px;margin:0 0 14px}
.bottom strong{font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--purple)}
.bottom p{margin:6px 0 0;font-size:1.05rem}
.evtype{font-size:.9rem;color:var(--muted);margin:0 0 8px}
.post h2{font:700 1.5rem/1.25 var(--serif);margin:38px 0 12px}
.post p,.post li{max-width:68ch}
.post ul{padding-left:1.2em}
.post li{margin:8px 0}
.facts{list-style:none;padding:0!important}
.facts li{background:#fff;border:1px solid var(--line);border-radius:8px;padding:12px 16px}
.facts strong{color:var(--purple);font-size:1.1em}
.reading{display:inline-block;margin:0 0 8px!important;font-size:.75rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--ember)}
.chart{margin:22px 0;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 12px 8px}
.chart svg{width:100%;height:auto;display:block}
.chart-val{font:700 18px var(--sans);fill:var(--ink)}
.chart-lab{font:600 14px var(--sans);fill:var(--muted)}
.chart figcaption{font-size:.82rem;color:var(--muted);text-align:center;padding:4px 0 6px}
.sources{margin-top:44px;border-top:1px solid var(--line);padding-top:6px}
.sources ol{padding-left:1.3em}
.sources li{margin:12px 0}
.src-meta{font-size:.86rem;color:var(--muted)}
.open{color:var(--olive);font-weight:700}

.prose{max-width:760px}
.prose h1{font:700 clamp(2rem,5vw,2.7rem)/1.12 var(--serif);margin:0 0 18px}
.prose h2{font:700 1.4rem/1.25 var(--serif);margin:34px 0 10px}

/* footer */
.site-footer{background:var(--ink);color:#cfc7e2;padding:36px 0 40px;font-size:.9rem}
.site-footer .disc{margin:0 0 12px;max-width:72ch}
.site-footer .fine{margin:0;color:#a89fc0}
.motto{color:#19e6c0;font-weight:700}

/* chooser / 404 */
.chooser{background:#fff}
.choose{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px;text-align:center}
.choose img{max-width:320px}

@media (max-width:640px){
  body{font-size:16.5px}
  .brand img{width:132px}
  .bar{gap:8px}
  .nav{gap:10px;font-size:.84rem}
  .nav .lang-toggle{padding:4px 9px}
  .hero-in{padding-top:56px;padding-bottom:64px}
  .hero-orb{opacity:.18;right:-12%}
  .block{padding-top:40px;padding-bottom:40px}
}