*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;background:#f4f6fb;color:#111}a{color:inherit;text-decoration:none}.container{max-width:960px;margin:0 auto;padding:12px}.card{background:#fff;border-radius:10px;padding:14px;border:1px solid #eef1f7;box-shadow:0 1px 4px #141e3c0a}.btn{background:#0b6cff;color:#fff;border:none;padding:8px 12px;border-radius:8px;cursor:pointer}.input,textarea{width:100%;padding:8px;border-radius:8px;border:1px solid #e6e9ef}.small{font-size:.9rem;color:#666}.event-header{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}@media(max-width:640px){.event-header{flex-direction:column;align-items:flex-start}}