:root{--bg:#f7f9fc;--card:#fff;--ink:#14213d;--muted:#5b6475;--accent:#0b7a5c;--accent-d:#095f48;--line:#e2e8f0}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
header,footer{background:var(--ink);color:#fff;padding:14px 16px}
header a,footer a{color:#fff;text-decoration:none}
header .wrap,footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.logo{font-weight:700;font-size:1.1rem}
nav a{margin-left:14px;font-size:.95rem;opacity:.9}
main{max-width:760px;margin:0 auto;padding:20px 16px}
.wrap{max-width:760px;margin:0 auto}
h1{font-size:1.7rem;line-height:1.25;margin:.2em 0}
h2{font-size:1.25rem;margin-top:1.6em}
.sub{color:var(--muted);margin-top:0}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;margin:16px 0}
label{display:block;font-weight:600;margin:12px 0 4px;font-size:.95rem}
input{width:100%;padding:11px;font-size:1rem;border:1px solid var(--line);border-radius:8px}
button{margin-top:16px;width:100%;padding:13px;font-size:1.05rem;font-weight:700;color:#fff;background:var(--accent);border:0;border-radius:8px;cursor:pointer}
button:hover{background:var(--accent-d)}
.results{display:none}
.big{font-size:1.6rem;font-weight:800;color:var(--accent)}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat{background:var(--bg);border-radius:8px;padding:12px}
.stat span{display:block;color:var(--muted);font-size:.85rem}
.stat b{font-size:1.15rem}
.save{background:#e8f6f1;border-left:4px solid var(--accent);padding:10px 12px;border-radius:6px;margin-top:12px}
.warn{background:#fdecec;border-left:4px solid #c0392b;padding:10px 12px;border-radius:6px;margin-top:12px}
.ad{min-height:90px;margin:16px 0;text-align:center;color:#9aa3b2;font-size:.8rem}
.note{font-size:.85rem;color:var(--muted)}
@media(max-width:480px){.grid{grid-template-columns:1fr}}