.f2vc{--ink:#10283d;--navy:#12365c;--aqua:#0a998e;--light:#f1f7fb;--soft:#f8fafc;--line:#dbe5ed;--muted:#53677b;--warning:#875713}
.f2vc *{box-sizing:border-box}
.f2vc .warning{border:1px solid #e8d2ad;background:#fff8ea;color:#684e20;border-radius:13px;padding:14px 17px;margin:18px 0;font-size:14px}
.f2vc .grid{display:grid;grid-template-columns:minmax(340px,1fr) minmax(340px,1fr);gap:20px;align-items:start}
.f2vc .panel{background:white;border:1px solid var(--line);border-radius:17px;padding:23px;box-shadow:0 5px 30px #1736570b}
.f2vc .panel h2{margin:0 0 7px;font-size:23px;line-height:1.3}
.f2vc .sectionhint{margin:0 0 18px;color:var(--muted);font-size:14px}
.f2vc .fields{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.f2vc label{font-weight:650;font-size:13px;display:flex;flex-direction:column;gap:5px}
.f2vc input{min-width:0;width:100%;border:1px solid #a9bbc9;border-radius:8px;padding:11px 9px;font:600 15px/1.2 system-ui;color:var(--navy);background:#f9fcff}
.f2vc input:focus-visible,.f2vc button:focus-visible,.f2vc a:focus-visible{outline:3px solid #2ca9c7;outline-offset:2px}
.f2vc .buttons{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0 0}
.f2vc button{cursor:pointer;border-radius:9px;padding:10px 15px;background:#114e80;border:0;color:white;font-weight:750}
.f2vc button.ghost{background:#e8f0f7;color:#17466e}
.f2vc button:hover{filter:brightness(.95)}
.f2vc #error{color:#a62432;font-weight:750;min-height:18px;margin:8px 0 0}
.f2vc .metrics{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.f2vc .metric{border:1px solid #d6e6ed;border-radius:12px;padding:11px 12px;background:var(--soft)}
.f2vc .metric span{font-size:12px;color:var(--muted);font-weight:700;display:block}
.f2vc .metric strong{display:block;font-size:19px;word-break:break-word;color:#12365c}
.f2vc .metric.primary{background:#e7f6f6;border-color:#a6dada}
.f2vc .progress{border-radius:13px;overflow:hidden;background:#e6edf1;height:12px;margin:20px 0 6px}
.f2vc .fill{height:100%;background:linear-gradient(90deg,#16769e,#0d9d87);width:0;transition:width .2s}
.f2vc .progresslabel{font-size:12px;color:var(--muted)}
.f2vc .alert{margin-top:12px;padding:12px;border-radius:10px;background:#f0f5f8;border-left:4px solid #168e95;font-weight:600}
.f2vc .alert.bad{border-color:#bc6b31;background:#fff2e8}
.f2vc .content{margin-top:24px;display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
.f2vc .article{background:white;padding:24px;border:1px solid var(--line);border-radius:17px}
.f2vc .article p{margin:11px 0}
.f2vc .article h2{font-size:21px;margin-top:9px}
.f2vc .article h3{font-size:16px;margin:18px 0 5px}
.f2vc li{margin:7px 0}
.f2vc .formula{background:#eaf4f7;padding:13px 17px;border-radius:10px;border-left:4px solid #2e9ca2;font-size:14px}
.f2vc .faq details{border-top:1px solid var(--line);padding:12px 0}
.f2vc .faq summary{cursor:pointer;font-weight:750}
.f2vc .refs a{overflow-wrap:anywhere}
.f2vc a{color:#09699a}
@media(max-width:860px){.f2vc .grid,.f2vc .content{grid-template-columns:1fr}}
@media(max-width:540px){.f2vc .fields,.f2vc .metrics{grid-template-columns:1fr}
.f2vc .metric strong{font-size:18px}
.f2vc .panel,.f2vc .article{padding:16px}
.f2vc .buttons button{flex:1}}
@media print{.f2vc .grid,.f2vc .content{display:block}
.f2vc .panel,.f2vc .article{page-break-inside:avoid;margin:15px 0}
.f2vc .buttons{display:none}}
.f2vc .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.f2vc{font-size:15px;line-height:1.6;color:#10233e;margin:0 0 28px}
.f2vc-warn{border:1px solid #e8d2ad;background:#fff8ea;color:#684e20;border-radius:13px;padding:12px 16px;margin:0 0 16px;font-size:14px}
.f2vc input,.f2vc button{font-family:inherit}
.f2vc .field .units,.f2vc .units,.f2vc .help,.f2vc .field .help,.f2vc .results-foot,.f2vc .panelhead p,.f2vc .sectionhint,.f2vc .sub,.f2vc .meterlabel,.f2vc .progresslabel,.f2vc .subtle,.f2vc .muted{color:#4d605b}
@media(max-width:700px){.f2vc .layout,.f2vc .grid,.f2vc .columns{grid-template-columns:1fr}}