:root{--bg: #f5f5f5;--card-bg: #fff;--border: #e0e0e0;--primary: #1976d2;--text: #333}body{margin:0;font-family:system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text)}nav{background:var(--card-bg);padding:.75rem 1.5rem;box-shadow:0 1px 3px #00000014}nav a{margin-right:1rem;color:var(--primary);text-decoration:none}nav a:hover{text-decoration:underline}nav a.active{font-weight:600}.container{max-width:720px;margin:2rem auto;padding:0 1rem}.card{background:var(--card-bg);border-radius:8px;padding:1.5rem;box-shadow:0 1px 3px #00000014;margin-bottom:1.5rem}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.25rem;font-weight:500}.form-group input,.form-group select,.form-group textarea{width:100%;max-width:400px;padding:.5rem;border:1px solid var(--border);border-radius:4px;box-sizing:border-box}.form-group textarea{min-height:80px}.form-row{display:flex;gap:1rem;flex-wrap:wrap}.form-row .form-group{flex:1 1 200px}button[type=submit]{background:var(--primary);color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer}button[type=submit]:hover{opacity:.9}h1{margin-top:0}h2{margin:1.5rem 0 .5rem;font-size:1.1rem}