:root{--fg:#1d1d1f;--muted:#5f6368;--bg:#fff;--accent:#b3261e;--line:#e3e3e3;--note:#fff8e1}
*{box-sizing:border-box}body{margin:0;font:17px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--fg);background:var(--bg)}
a{color:var(--accent)}header,main,footer{max-width:860px;margin:0 auto;padding:0 20px}
header{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:12px;border-bottom:1px solid var(--line)}
header .brand{font-weight:700;text-decoration:none;color:var(--fg);font-size:1.15rem}nav a{margin-left:14px;text-decoration:none;font-size:.95rem}
.disclosure{background:var(--note);border:1px solid #f0d98a;padding:10px 14px;border-radius:8px;font-size:.92rem;margin:18px 0}
.meta{color:var(--muted);font-size:.9rem}table{width:100%;border-collapse:collapse;font-size:.93rem;margin:16px 0;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}th{background:#fafafa}
.product{border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin:22px 0}.product h3{margin-top:4px}
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media(max-width:600px){.pros-cons{grid-template-columns:1fr}}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:8px 14px;border-radius:6px;text-decoration:none;font-weight:600}
.btn.disabled{background:#999;pointer-events:none}.sources{font-size:.88rem;color:var(--muted)}
footer{border-top:1px solid var(--line);margin-top:40px;padding:18px 20px 40px;color:var(--muted);font-size:.88rem}
.calc label{display:block;margin:8px 0 2px}.calc input{width:100%;max-width:280px;padding:6px;font-size:1rem}.calc output{font-weight:700}