:root{font-family:Inter,system-ui,Segoe UI,Arial,sans-serif;color:#172033;background:#f4f6f8}*{box-sizing:border-box}body{margin:0}.wrap{min-height:100vh;display:grid;place-items:center;padding:24px}.card{width:min(560px,100%);background:#fff;border-radius:18px;padding:28px;box-shadow:0 12px 40px #0002}h1{margin:0 0 8px;font-size:30px}.sub{margin:0 0 24px;color:#5a6475;line-height:1.45}label{display:block;margin:14px 0 6px;font-weight:650}input,select{width:100%;padding:13px 14px;border:1px solid #ccd3dc;border-radius:10px;font:inherit;margin-top:7px}fieldset{margin:20px 0;border:1px solid #d9dee6;border-radius:12px;padding:12px 14px}.opt{display:flex;gap:10px;align-items:center;font-weight:500}.opt input{width:auto;margin:0}details{margin:14px 0 20px}.result{background:#f7f9fb;border-radius:12px;padding:16px;line-height:1.65;min-height:96px}button{width:100%;padding:14px;border:0;border-radius:12px;font-weight:750;font-size:16px;background:#172033;color:#fff;cursor:pointer;margin-top:18px}.status{font-size:13px;color:#687386;line-height:1.4}.money{font-size:26px;font-weight:800}.muted{color:#687386;font-size:13px}