.calculator-shell { width: min(100% - 48px, 780px); margin: 0 auto; padding: 56px 0 96px; }
.calculator-shell .eyebrow { color: #cca200; font: 11px/1.4 Arial, sans-serif; letter-spacing: .14em; text-transform: uppercase; }
.calculator-shell h1 { max-width: 720px; margin: 14px 0 18px; font-size: clamp(40px, 6vw, 72px); line-height: .98; font-weight: 400; }
.calculator-shell .intro, .calculator-shell .disclaimer { color: #6f6f6f; font: 17px/1.6 Georgia, serif; }
.calculator-form { display: grid; gap: 8px; margin: 28px 0; padding: 22px; background: #fff; border: 1px solid #d7d7d7; box-shadow: 0 14px 34px rgba(32,32,32,.06); }
.calculator-form label { margin-top: 10px; color: #6f6f6f; font: 12px/1.4 Arial, sans-serif; letter-spacing: .05em; text-transform: uppercase; }
.calculator-form input, .calculator-form select { width: 100%; min-height: 44px; padding: 11px 12px; border: 1px solid #b3b3b3; color: #202020; font: 16px/1.4 Georgia, serif; }
.calculator-form input:focus, .calculator-form select:focus { outline: 3px solid #cca200; outline-offset: 2px; border-color: #cca200; }
.calculator-form button { width: fit-content; margin-top: 12px; padding: 13px 18px; border: 1px solid #202020; background: #ffd11f; color: #202020; cursor: pointer; font: 12px Arial, sans-serif; letter-spacing: .06em; text-transform: uppercase; }
.calculator-form button:hover { background: #ffd73e; }
.result { margin: 24px 0; padding: 22px; border-left: 3px solid #ffd11f; background: #3b3b3b; color: #f5f5f5; }
.result strong { font-size: 34px; }
.result span { color: #d7dfdc; font: 13px Arial, sans-serif; }
.error { margin: 4px 0; color: #9b2c20; font: 13px Arial, sans-serif; }
@media (max-width: 520px) { .calculator-shell { width: min(100% - 32px, 780px); padding-block: 36px 64px; } }