.page-toc{display:flex;flex-wrap:wrap;gap:8px 18px;padding:18px;background:#edf6f6;border-radius:10px;margin:24px 0}.page-toc a{font-size:15px;font-weight:700}.calculator{margin:28px 0;padding:24px;border:1px solid #b6d5d7;border-radius:14px;background:#f5fbfa}.calculator h2{margin-top:0}.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.input-grid label{font-size:15px;font-weight:700;line-height:1.7;display:block;min-width:0}.input-grid input{display:block;width:100%;min-width:0;box-sizing:border-box;font:inherit;font-size:18px;border:1px solid #8aaeb3;border-radius:7px;background:#fff;color:#15384a;padding:11px 12px;margin-top:8px}.input-grid input:focus-visible{outline:3px solid #c57b00;outline-offset:3px}.calc-button{font:inherit;font-weight:700;border:0;cursor:pointer;margin-top:20px}.calc-button:focus-visible{outline:3px solid #c57b00;outline-offset:4px}.calc-result{padding:15px 18px;background:#e0f2ed;border-radius:8px;min-height:56px}.calc-result p{margin:0;color:#134e4a;font-weight:700}.calc-error{color:#a42424!important;font-size:15px;margin:14px 0;min-height:1em}.calc-help{font-size:15px}.formula{padding:18px;background:#eef4fa;border-left:4px solid #146c78}.reading-note{font-size:14px;color:#526776}@media(max-width:600px){.input-grid{grid-template-columns:1fr}.calculator{padding:18px}.page-toc{gap:8px 14px}.calc-button{width:100%}}