:root{color-scheme:light}body{margin:0;font-family:Sora,Montserrat,Outfit,sans-serif}.optech-calculator-card{background:#fff;border-radius:16px;box-shadow:0 20px 50px #0b214114;padding:28px}.optech-calculator-label{display:block;font-weight:600;margin:16px 0 8px;color:#0b2141}.optech-calculator-input{width:100%;border:1px solid #d6e1f0;border-radius:10px;padding:12px 14px;font-size:16px;color:#0b2141;background:#f7f9fc}.optech-calculator-input:focus{outline:none;border-color:#0b2141;background:#fff}.optech-calculator-result{margin-top:20px;padding:16px;border-radius:12px;background:linear-gradient(135deg,#0b2141,#12376a);color:#fff;display:flex;align-items:center;justify-content:space-between;font-size:16px}.optech-calculator-result strong{font-size:22px}.optech-calculator-note{margin-top:12px;color:#4a5b76;font-size:15px}