:root{--brand:#0b5c5b;--bg:#f7f7f7;--ink:#222;--muted:#666;--card:#fff}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Arial,sans-serif;background:var(--bg);color:var(--ink)}
header,footer{background:var(--brand);color:#fff;padding:12px 16px}main{padding:16px;max-width:920px;margin:0 auto}
.card{background:var(--card);border:1px solid #e7e7e7;border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,.04);padding:16px;margin:12px 0}
form input,form textarea{width:100%;max-width:520px;padding:10px;margin:6px 0;border:1px solid #d9d9d9;border-radius:8px;background:#fff}
button{border:0;background:#0b5c5b;color:#fff;padding:10px 16px;border-radius:8px;cursor:pointer}
.alert.ok{background:#e7f7f2;border:1px solid #b7e7d9;padding:10px;border-radius:8px}
.alert.err{background:#fde8ea;border:1px solid #f3b5bd;padding:10px;border-radius:8px}
.banner img{max-width:100%;border-radius:10px;display:block}
table{width:100%;border-collapse:collapse;margin:10px 0}
th,td{border:1px solid #e7e7e7;padding:8px;text-align:left}
th{background:#fafafa}
a.button,button{display:inline-block;text-decoration:none}