:root{--blue:#176ff2;--navy:#153454;--ink:#19334e;--muted:#64788e;--line:#d6e1ec;--bg:#f4f8fc;--panel:#fff;--green:#16855d;--amber:#b66c00;--red:#c23d4d;--shadow:0 14px 35px rgba(21,52,84,.10)}*{box-sizing:border-box}a{color:inherit}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:999;background:#fff;padding:10px 14px;border-radius:8px}.noscript{padding:12px;text-align:center;background:#fff2cc;color:#704d00}.actions{display:flex;align-items:center;gap:10px}.workspace{max-width:var(--nel-content-max, 1400px);margin:28px auto;display:grid;grid-template-columns:minmax(0,1.16fr) minmax(430px,.84fr);gap:24px;padding:0 20px;align-items:start}.section-title{display:flex;align-items:flex-start;gap:12px;margin-bottom:17px}.section-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:#e8f2ff;color:#075fc4;font-size:13px;font-weight:950}.section-title h2{margin:0;font-size:23px}.section-title p{margin:2px 0 0;color:var(--muted);font-size:14px}.notice{padding:12px 14px;border-left:4px solid var(--blue);background:#edf6ff;border-radius:0 10px 10px 0;color:#355877;font-size:14px;margin-bottom:18px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{min-width:0}.field.full, .subheading{grid-column:1/-1}.field label{display:block;font-size:13px;font-weight:850;margin:0 0 6px}.field small{display:block;color:var(--muted);font-size:11px;margin-top:4px}.input-wrap{display:flex;align-items:center;border:1px solid #cbd8e6;border-radius:10px;background:#fff;overflow:hidden;transition:.15s}.input-wrap:focus-within{border-color:#6ea6e8;box-shadow:0 0 0 3px rgba(23,111,242,.10)}.input-wrap input, .input-wrap select{width:100%;min-width:0;border:0;outline:0;padding:11px 12px;font:inherit;background:transparent;color:var(--ink)}.input-wrap span{padding:0 10px;color:#6c8095;font-size:12px;white-space:nowrap}.input-wrap.no-unit select{padding-right:36px}.field.invalid .input-wrap{border-color:var(--red);box-shadow:0 0 0 3px rgba(194,61,77,.08)}.subheading{margin-top:8px;padding:9px 0 2px;border-bottom:1px solid #e4ebf2;font-weight:900;color:#315273}.advanced-toggle{margin:18px 0 10px;background:#f2f7fc;border:1px solid #d9e5ef;border-radius:10px;padding:10px 12px;font-weight:850;color:#315273;cursor:pointer}.advanced-panel{padding:15px;border-radius:12px;background:#f7fafe;border:1px solid #e2eaf2}.input-actions, .result-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}button{font:inherit;cursor:pointer}.primary, .secondary, .result-actions button, .text-button{border:0;border-radius:10px;padding:11px 15px;font-weight:850}.primary{background:var(--blue);color:#fff}.secondary, .result-actions button{background:#edf3f8;color:#294b6d}.text-button{background:transparent;color:var(--blue);padding:8px}.load-selector{margin-top:18px}.equipment-wrap{margin-top:13px}.equipment-head{display:flex;justify-content:space-between;gap:12px;align-items:center}.equipment-head h3{margin:0;font-size:16px}.equipment-head button{border:1px solid #cbd8e6;background:#fff;border-radius:9px;padding:8px 10px;color:#245e9e;font-weight:800}.table-scroll{overflow:hidden;margin-top:10px;border:1px solid #dce6ef;border-radius:12px}.equipment-table{width:100%;border-collapse:collapse;table-layout:fixed;min-width:0}.equipment-table th, .equipment-table td{padding:8px 7px;border-bottom:1px solid #e7edf3;text-align:left;font-size:13px;vertical-align:middle}.equipment-table th:nth-child(1), .equipment-table td:nth-child(1){width:31%}.equipment-table th:nth-child(2), .equipment-table td:nth-child(2){width:14%}.equipment-table th:nth-child(3), .equipment-table td:nth-child(3){width:25%}.equipment-table th:nth-child(4), .equipment-table td:nth-child(4){width:20%;white-space:nowrap;text-align:right}.equipment-table th:nth-child(5), .equipment-table td:nth-child(5){width:10%;text-align:center}.equipment-table th{background:#f2f7fc;color:#4a6177}.equipment-table select, .equipment-table input{width:100%;border:1px solid #cad7e5;border-radius:7px;padding:7px}.input-wrap.compact{border-radius:7px}.input-wrap.compact input{padding:7px}.remove-row{width:30px;height:30px;border-radius:8px;border:0;background:#fff0f1;color:#b83746;font-size:20px}.equipment-total{display:flex;justify-content:flex-end;gap:12px;padding:10px 2px;font-weight:900}.summary-card{display:flex;justify-content:space-between;align-items:center;padding:18px;border-radius:14px;border:1px solid #bee4d4;background:#effaf6}.summary-card.warning{border-color:#f1c3c8;background:#fff4f5}.summary-card p{margin:0;color:#5a7287;font-size:13px}.summary-card strong{display:block;font-size:34px;line-height:1.15;color:var(--green)}.summary-card.warning strong{color:var(--red)}.summary-card small{display:block;color:var(--muted);font-size:12px;margin-top:5px}.status-badge{padding:7px 10px;border-radius:999px;background:#d6f1e7;color:#126b4d;font-size:12px;font-weight:900}.summary-card.warning .status-badge{background:#f9dfe2;color:#a62e3d}.metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:11px;margin-top:14px}.metric, .result-box{border:1px solid #dee7ef;border-radius:12px;padding:13px;background:#fff}.metric small, .result-box span{display:block;color:var(--muted);font-size:12px}.metric strong, .result-box strong{font-size:18px;color:#173e64}.bar-card{margin-top:14px;border:1px solid #dce6ef;border-radius:12px;padding:13px}.bar-head{display:flex;justify-content:space-between;color:#536c83;font-size:13px;margin-bottom:8px}.bar-track{height:10px;background:#e6edf4;border-radius:999px;overflow:hidden}.bar-fill{height:100%;background:linear-gradient(90deg,#176ff2,#46a0ff);border-radius:inherit}.bar-fill.danger{background:linear-gradient(90deg,#d5634e,#c33c50)}.result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:14px}.breakdown, .warning-box{margin-top:16px}.breakdown h3, .warning-box h3{font-size:16px;margin:0 0 8px}.breakdown table{width:100%;border-collapse:collapse}.breakdown th, .breakdown td{border-bottom:1px solid #e4ebf2;padding:8px 4px;font-size:13px}.breakdown th{text-align:left;color:#61778c;font-weight:700}.breakdown td{text-align:right;font-weight:850}.warning-box{padding:14px;border:1px solid #e0e8f0;border-radius:12px;background:#fafcfe}.warning-box ul{margin:0;padding-left:20px}.warning-box li{margin:7px 0;font-size:13px;color:#4d6478}.warning-box li.high{color:#a72e3e}.warning-box li.medium{color:#946000}.method-grid, .faq-grid, .related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.method-grid article, .faq-grid details, .related-grid a{background:#fff;border:1px solid #dce6ef;border-radius:14px;padding:18px;text-decoration:none}.method-grid h3{margin:0 0 8px}.method-grid p, .faq-grid p, .related-grid p{margin:0;color:#5d7287;font-size:14px}.faq-grid summary{font-weight:900;cursor:pointer}.sources{margin-top:16px;padding:14px;border-radius:12px;background:#edf5fd;font-size:13px}.sources a{color:#075fc4}.history-head{display:flex;align-items:end;justify-content:space-between}.history-list{display:grid;gap:10px}.history-item{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:18px;padding:15px;background:#fff;border:1px solid #dce6ef;border-radius:12px}.history-item div{display:flex;flex-direction:column}.history-item small, .history-item span{color:var(--muted);font-size:12px}.history-item button{border:0;border-radius:8px;padding:8px 11px;font-weight:800;color:#1762b0;background:#eaf3fd}.empty{padding:22px;text-align:center;color:var(--muted);background:#fff;border:1px dashed #cbd8e6;border-radius:12px}.related-grid{grid-template-columns:repeat(3,1fr)}.related-grid strong{color:#174d82}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;background:#153454;color:#fff;padding:10px 15px;border-radius:10px;z-index:300;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}[hidden]{display:none!important}
@media (max-width:1120px){.workspace{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr 1fr}}
@media (max-width:650px){.actions{margin-left:auto}.workspace{padding:0 12px;margin-top:16px}.form-grid, .metric-grid, .result-grid, .method-grid, .faq-grid, .related-grid{grid-template-columns:1fr}.summary-card{align-items:flex-start;gap:10px}.summary-card strong{font-size:27px}.history-item{grid-template-columns:1fr auto}.history-item>div:nth-child(2){grid-column:1/2}.history-item button{grid-row:1/3;grid-column:2}}
@media print{.workspace{display:block;margin:0;max-width:none;padding:0}}.ad-slot{max-width: var(--nel-ad-max, 1200px);margin:18px auto;padding:14px 20px;text-align:center}.ad-label{font-size:10px;letter-spacing:.12em;color:#8797a8;margin-bottom:8px}.ad-body{min-height:0}

@media (max-width:650px){.table-scroll{overflow:visible;border:0}.equipment-table, .equipment-table tbody{display:block;width:100%}.equipment-table thead{display:none}.equipment-table tr{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) 38px;gap:9px;margin-bottom:10px;padding:12px;border:1px solid #dce6ef;border-radius:12px;background:#fff}.equipment-table td{display:block!important;width:auto!important;padding:0!important;border:0!important;text-align:left!important;white-space:normal!important}.equipment-table td::before{content:attr(data-label);display:block;margin-bottom:4px;color:#6a7e92;font-size:11px;font-weight:800}.equipment-table td:nth-child(1){grid-column:1/-1}.equipment-table td:nth-child(2){grid-column:1}.equipment-table td:nth-child(3){grid-column:2}.equipment-table td:nth-child(4){grid-column:1/3;padding-top:3px!important;font-weight:900!important;color:#173e64}.equipment-table td:nth-child(5){grid-column:3;grid-row:2/4;align-self:center}.equipment-table td:nth-child(5)::before{display:none}.equipment-table select, .equipment-table input{min-height:42px}
}.action-icon{display:inline-block;width:18px;height:18px;flex:0 0 18px;vertical-align:-4px;margin-right:6px;overflow:visible}

/* V1.9.4-01: balance the unusually tall desktop input/result columns. */
@media (min-width:1121px){.workspace{align-items:stretch}
}

/* V1.9.9-01: keep the full site navigation visible on desktop. */
@media (min-width: 1101px){}