:root{--space:16px;--radius:16px;--maxw:1000px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue',Arial}
*{box-sizing:border-box}
body{margin:0;padding:24px;display:flex;flex-direction:column;align-items:center;gap:24px}
header{width:100%;max-width:var(--maxw);display:flex;align-items:center;justify-content:space-between;gap:16px}
h1{margin:0;font-size:1.6rem}
.wrapper{width:100%;max-width:var(--maxw)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.btn{display:inline-block;padding:14px 16px;border-radius:var(--radius);text-decoration:none;border:1px solid #ddd;box-shadow:0 1px 2px rgba(0,0,0,.05);color:#333}
.btn:hover{transform:translateY(-1px);box-shadow:0 4px 10px rgba(0,0,0,.08)}
.card{padding:16px;border-radius:var(--radius);border:1px solid #e7e7e7;box-shadow:0 1px 2px rgba(0,0,0,.04);background:#fff}
select{padding:8px 10px;border-radius:12px;border:1px solid #ccc}
footer{opacity:.7;font-size:.9rem}
a.back{color:#333;text-decoration:none;margin-right:8px}
a.back:hover{text-decoration:underline}