.leakage-section { background: var(--surface-blue); }
.leakage-layout { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 48px; align-items: center; }
.leakage-copy h2 { color: var(--blue-900); }
.leakage-copy p { max-width: 52ch; }
.leakage-copy .button { margin-top: 12px; }
.leakage-section .calculator { min-width: 0; padding: 32px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.leakage-section .calc-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.leakage-section .calc-head h2 { font-size: 1.5rem; margin: 0; color: var(--blue-900); }
.leakage-section .calc-head p { margin: 6px 0 0; }
.leakage-section .pulse { display: grid; place-items: center; flex: 0 0 44px; height: 44px; border-radius: 50%; background: var(--surface-blue); color: var(--blue-800); font-size: 1.5rem; font-weight: 700; }
.leakage-section .fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.leakage-section .field { display: block; min-width: 0; }
.leakage-section .field label { display: block; font-size: .875rem; font-weight: 700; margin-bottom: 6px; }
.leakage-section .field input { width: 100%; min-width: 0; padding: 12px; border: 1px solid var(--line-strong); border-radius: var(--radius-sm); background: #fff; color: var(--ink-800); font: inherit; }
.leakage-section .field input:focus-visible { outline: 3px solid var(--cyan-500); outline-offset: 2px; }
.leakage-section .results { margin-top: 24px; padding: 20px; background: var(--blue-900); border-radius: var(--radius-md); color: #fff; }
.leakage-section .result-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 8px 20px; }
.leakage-section .result-row + .result-row { border-top: 1px solid #ffffff40; padding-top: 12px; margin-top: 12px; }
.leakage-section .result-row strong { font-size: clamp(1.35rem, 2.5vw, 1.9rem); overflow-wrap: anywhere; }
.leakage-section .result-row small { font-size: .875rem; }
.leakage-section .calc-note { font-size: .875rem; color: var(--ink-650); margin: 14px 0 0; }
@media (max-width: 900px) { .leakage-layout { grid-template-columns: minmax(0, 1fr); gap: 28px; } }
@media (max-width: 560px) { .leakage-section .calculator { padding: 20px; } .leakage-section .fields { grid-template-columns: minmax(0, 1fr); } }