/* Simple-Symptoms website. System fonts only: no third-party requests, no tracking. */
:root{
  --bg:#EEF2F4; --surface:#FFFFFF; --sunk:#E3E9ED; --line:#CDD6DC;
  --ink:#16222C; --muted:#5A6B78; --accent:#1F6874; --accent-ink:#FFFFFF; --accent-soft:#D6E9EB;
  --rose:#B2456B; --rose-soft:#F5DCE5;
  --f-body:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){ :root{
  --bg:#10171C; --surface:#18222A; --sunk:#202C35; --line:#2E3C47;
  --ink:#E4ECF1; --muted:#93A5B2; --accent:#5DB3BE; --accent-ink:#0B1A1D; --accent-soft:#1D3940;
  --rose:#E07CA0; --rose-soft:#3E2230; color-scheme:dark }}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.6}
a{color:var(--accent)}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:760px;margin:0 auto;padding:0 max(18px,env(safe-area-inset-left)) 0 max(18px,env(safe-area-inset-right))}

header.site{border-bottom:1px solid var(--line);background:var(--surface)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:1.1rem}
.brand img{width:34px;height:34px;border-radius:9px}
nav.top{display:flex;gap:4px;flex-wrap:wrap}
nav.top a{text-decoration:none;color:var(--muted);font-size:.92rem;padding:6px 10px;border-radius:8px}
nav.top a[aria-current="page"],nav.top a:hover{color:var(--ink);background:var(--sunk)}

main{padding-block:36px 56px}
h1,h2,h3{line-height:1.2;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:2.1rem;margin:0 0 10px}
h2{font-size:1.35rem;margin:36px 0 10px}
h3{font-size:1.05rem;margin:22px 0 6px}
p,ul,ol{margin:0 0 14px;max-width:66ch}
li{margin-bottom:6px}
.lede{font-size:1.12rem;color:var(--muted)}
.updated{font-size:.9rem;color:var(--muted)}

.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:18px 0}
.card.accent{border-color:var(--accent);background:linear-gradient(135deg,var(--accent-soft),var(--surface) 70%)}
.card h2,.card h3{margin-top:0}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding-left:40px;margin-bottom:12px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-weight:700;font-size:.9rem}

.email{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;font-weight:700;font-size:1.05rem;background:var(--sunk);border-radius:10px;padding:8px 12px;word-break:break-all}
.email button{font:inherit;font-size:.85rem;font-weight:700;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;padding:3px 10px;cursor:pointer}

table{border-collapse:collapse;width:100%;font-size:.95rem}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--surface);margin:12px 0 18px}
th,td{text-align:left;padding:10px 12px;border-top:1px solid var(--line);vertical-align:top}
th{border-top:0;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}

/* home */
.hero{display:grid;grid-template-columns:auto minmax(0,1fr);gap:22px;align-items:center}
.hero img{width:96px;height:96px;border-radius:22px}
@media (max-width:520px){.hero{grid-template-columns:1fr}.hero img{width:72px;height:72px}}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:24px 0}
.features .card{margin:0}
.features h3{margin:0 0 4px}
.features p{margin:0;color:var(--muted);font-size:.95rem}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.badge{display:inline-block;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:10px 14px;font-weight:700;color:var(--muted)}
.pill{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--rose);background:var(--rose-soft);border-radius:99px;padding:2px 10px}

details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:10px 0}
summary{font-weight:700;cursor:pointer}
details p{margin:10px 0 0}

footer.site{border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
footer.site .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-block:20px}
footer.site nav{display:flex;gap:14px;flex-wrap:wrap}
.updated.spaced{margin-top:28px}