:root{--bg: #f7f7f8;--card: #ffffff;--text: #111827;--muted: #6b7280;--primary: #111111;--border: #e5e7eb}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica Neue,Arial,"Apple Color Emoji","Segoe UI Emoji";background:var(--bg);color:var(--text)}h1,h2,h3{margin:0 0 12px}label{font-weight:600;font-size:14px}input,textarea,button{font:inherit}input,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff}button{background:var(--primary);color:#fff;border:none;padding:10px 14px;border-radius:10px;cursor:pointer}.container{max-width:960px;margin:24px auto;padding:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:0 1px 2px #0000000a}.grid{display:grid;gap:12px}.row{display:flex;gap:12px;align-items:center;justify-content:space-between}.btn-secondary{background:#374151}