.calculator{max-width:780px;margin:0 auto;background:#fff;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.08);padding:32px}.calculator .tooltip{position:relative;display:inline-block}.calculator .tooltip i{color:#417769;width:18px;vertical-align:middle;margin-left:10px;height:18px;border-radius:50%;display:inline-flex;justify-content:center;align-items:center;border:1px solid #417769}.calculator .tooltip span{display:none}.calculator .tooltip:hover span{display:block;position:absolute;left:50%;top:50%;background:#fff;border-radius:15px;border:1px solid #417769;width:300px;padding:15px;overflow:hidden;z-index:3;color:#417769}.calculator .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem 2rem}.calculator .input-group{display:flex;flex-direction:column;gap:.5rem}.calculator label{font-weight:600;font-size:.95rem;color:#444}.calculator .dollar-input{display:flex;align-items:center;border:1px solid #d1d5db;border-radius:6px;overflow:hidden;background:#fafafa}.calculator .dollar-input span{background:#e5e7eb;padding:.75rem 1rem;color:#666;font-weight:500}input[type=text]{flex:1;border:none;padding:.75rem 1rem;font-size:1.05rem;background:0 0}.calculator input[type=text]:focus{outline:none;background:#eff6ff}.calculator .result-box{grid-column:1/-1;margin:1.5rem 0 0;padding:1.5rem;background:#f0fdf4;border:2px solid #34805e;border-radius:10px;text-align:center}.calculator .result-box h2{margin:0 0 .8rem;font-size:1.1rem;color:#166534}.calculator .result-amount{font-size:2.1rem;font-weight:700;color:#15803d;margin:0;padding:0}.calculator .inner-result{background:#fff;border-radius:15px;font-size:14px;text-align:left;padding:1.5rem}.calculator .calculate-btn{grid-column:1/-1;background:#34805e;color:#fff;border:none;padding:1rem 2rem;font-size:1.1rem;font-weight:600;border-radius:8px;cursor:pointer;transition:background .2s}.calculator .calculate-btn:hover{background:#14532d}.calculator .calculate-btn:active{transform:translateY(1px)}.inner-btn{position:relative;left:50%;transform:translateX(-50%)}@media (max-width:600px){.calculator .form-grid{grid-template-columns:1fr;gap:1.2rem}}