:root{--bg:#fff;--fg:#1c2127;--mut:#5b6670;--line:#e3e7eb;--acc:#1f5f4a;--card:#f6f8f9}
@media (prefers-color-scheme:dark){:root{--bg:#14181b;--fg:#e8ecef;--mut:#9aa6af;--line:#283036;--acc:#6cc3a3;--card:#1b2126}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:var(--acc)}header,main,footer{max-width:44rem;margin:0 auto;padding:1rem 1rem}
header{display:flex;flex-wrap:wrap;gap:.5rem 1.25rem;align-items:baseline;justify-content:space-between;border-bottom:1px solid var(--line)}
header strong{font-size:1.15rem}nav a{margin-right:1rem;text-decoration:none}h1{line-height:1.2;margin:1.5rem 0 .5rem}h2{margin:2rem 0 .5rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:1rem 1.1rem;margin:1rem 0}.price{font-size:1.4rem;font-weight:600}
.btn{display:inline-block;background:var(--acc);color:var(--bg);padding:.6rem 1.1rem;border-radius:8px;text-decoration:none;font-weight:600}
footer{border-top:1px solid var(--line);color:var(--mut);font-size:.9rem;margin-top:3rem}small{color:var(--mut)}