:root{--ink:#1a1a1a;--muted:#5a5a5a;--line:#d9d9d9;--accent:#0b5c5c;--bg:#fbfbf9;--card:#fff}
*{box-sizing:border-box}
html{color-scheme:light}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
main{max-width:680px;margin:0 auto;padding:28px 20px 60px}
h1{font-size:1.6rem;line-height:1.25;margin:.2em 0 .6em}
h2{font-size:1.15rem;margin:1.6em 0 .4em}
p,li{max-width:62ch}
a{color:var(--accent)}
.muted{color:var(--muted);font-size:.92rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin:18px 0}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:12px 18px;border-radius:8px;font-weight:600}
.btn.secondary{background:#fff;color:var(--accent);border:1.5px solid var(--accent)}
nav{font-size:.92rem;margin-bottom:24px}nav a{margin-right:14px}
label{display:block;font-weight:600;margin-top:14px}
input[type=number],input[type=email]{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:8px;width:100%;max-width:260px}
input[type=range]{width:100%;max-width:420px}
details{margin-top:14px}summary{cursor:pointer;font-weight:600}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
@media(max-width:560px){.grid{grid-template-columns:1fr}}
.stat{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.stat b{display:block;font-size:1.5rem;letter-spacing:-.01em}
.stat small{color:var(--muted)}
footer{margin-top:48px;font-size:.85rem;color:var(--muted);border-top:1px solid var(--line);padding-top:16px}
table{border-collapse:collapse;width:100%;font-size:.95rem}td,th{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}