*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:#f6f7fb;color:#111827}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.container{max-width:900px;margin:0 auto;padding:24px}.card{background:#fff;border-radius:12px;padding:16px;box-shadow:0 1px 4px rgba(0,0,0,.06)}.stack{display:grid;grid-gap:12px;gap:12px}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.btn{background:#2563eb;color:#fff;border:0;padding:8px 14px;border-radius:8px;cursor:pointer}.btn.secondary{background:#e5e7eb;color:#111827}.btn.danger{background:#ef4444}.input,.select,.textarea{border:1px solid #d1d5db;border-radius:8px;padding:8px 10px;width:100%}.grid{display:grid;grid-gap:8px;gap:8px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.muted{color:#6b7280;font-size:12px}