*{box-sizing:border-box}:root{--bg:#f7f8fa;--card:#fff;--border:#e3e6ea;--text:#1a1d21;--muted:#6b7280;--accent:#4f46e5;--danger:#dc2626}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.header{background:var(--card);border-bottom:1px solid var(--border)}.nav{max-width:960px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:700;font-size:18px;color:var(--text)}.brand,.links a{text-decoration:none}.links a{margin-left:20px;color:var(--muted)}.links a:hover{color:var(--accent)}.main{max-width:960px;margin:0 auto;padding:32px 24px}.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:20px}h1{font-size:24px;margin-top:0}h2{font-size:18px}label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:7px;font-size:14px;margin-bottom:12px;font-family:inherit}button{background:var(--accent);color:#fff;border:none;padding:9px 16px;border-radius:7px;font-size:14px;cursor:pointer}button:hover{opacity:.92}button.danger{background:transparent;color:var(--danger);padding:4px 8px}table{width:100%;border-collapse:collapse}td,th{text-align:left;padding:10px 8px;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:600}.row{display:flex;gap:16px}.row>div{flex:1 1}.error{color:var(--danger)}.error,.success{font-size:13px;margin-bottom:12px}.success{color:#15803d}.muted{color:var(--muted)}.nav{gap:10px 16px}.links,.nav{flex-wrap:wrap}.links{display:flex}img{max-width:100%;height:auto}@media (max-width:768px){.nav{padding:14px 18px}.main{padding:24px 18px}.row{flex-direction:column;gap:0}}@media (max-width:640px){.nav{flex-direction:column;align-items:flex-start;padding:12px 16px}.links{width:100%;gap:6px 18px}.links a{margin-left:0}.main{padding:20px 16px}h1{font-size:21px}.card{padding:16px}table{display:block;width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}input,select,textarea{font-size:16px}button{width:100%}button.danger{width:auto}}