:root{color-scheme:light;--navy:#10263e;--blue:#1254a2;--muted:#536780;--line:#dce5ef;--orange:#ffd495;--orange-dark:#8b4e08;--canvas:#edf3f8;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--navy);font-size:16px;line-height:1.5}
*{box-sizing:border-box}body{margin:0;background:var(--canvas)}button,input,select{font:inherit}button,summary,select{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #087fbe;outline-offset:3px}[hidden]{display:none!important}
.masthead{background:var(--navy);color:white;border-bottom:5px solid #ffa73d;padding:24px max(22px,env(safe-area-inset-left));}.header-inner{max-width:1180px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px}.eyebrow{font-size:.75rem;letter-spacing:.15em;color:#b6c9e0;margin:0 0 5px;font-weight:700}h1{font-size:1.65rem;line-height:1.2;letter-spacing:-.02em;margin:0}.connection{font-size:.875rem;border:1px solid #55708e;padding:7px 12px;border-radius:6px;color:#d9e6f5}
main{max-width:1224px;margin:auto;padding:28px 22px max(30px,env(safe-area-inset-bottom))}.workspace{display:grid;grid-template-columns:minmax(280px,.8fr) minmax(0,1.5fr);gap:24px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:0 3px 15px #0c244608}.results-column{display:grid;gap:24px}.section-heading{display:flex;gap:12px;align-items:center;margin-bottom:22px;flex-wrap:wrap}.section-heading h2{margin:0;font-size:1.15rem;line-height:1.3}.section-number{font-size:.875rem;font-weight:700;background:#eaf1f9;color:var(--blue);border-radius:5px;padding:4px 7px}.aircraft-label{font-size:.875rem;font-weight:700;margin-left:auto;border:1px solid var(--line);padding:3px 8px;border-radius:5px;color:var(--muted)}
form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 16px}label{font-size:.875rem;font-weight:650;display:block;min-width:0}.full{grid-column:1/-1}.unit{color:var(--muted);font-weight:400;margin-left:3px}input,select{width:100%;display:block;margin-top:7px;background:#f6f9fc;color:var(--navy);border:1px solid #b4c6dc;border-radius:6px;min-height:48px;padding:10px 12px;transition:border-color .12s}input{font-variant-numeric:tabular-nums}input:disabled{background:#eaf0f5;border-color:#d9e2ed;color:#4c647e;opacity:1}input:invalid:not(:focus){border-color:#b25324}small{font-size:.875rem}label small{display:block;margin-top:8px;color:var(--muted);font-weight:400}.shared-note,.rounding-note{font-size:.875rem;color:var(--muted);margin:22px 0 0}.shared-note{padding-top:18px;border-top:1px solid var(--line)}
.base-result{background:var(--orange);border-left:4px solid #f39828;padding:18px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;border-radius:6px}.result-label{font-size:.875rem;font-weight:650}.base-result strong{font-size:2.5rem;line-height:1.3;font-weight:750;font-variant-numeric:tabular-nums}.result-unit{font-size:1rem;margin-left:10px}.detail-button{border:1px solid #c0ccda;border-radius:6px;background:white;color:var(--blue);padding:8px 11px;font-size:.875rem;min-height:44px;font-weight:600}.base-result .detail-button{border-color:#d8a45b;background:#fff6e7;color:#66410f}.detail-button:hover{filter:brightness(.97)}.distance-list{margin-top:16px}.distance-list>div{display:flex;justify-content:space-between;align-items:baseline;gap:12px;border-bottom:1px solid var(--line);padding:13px 0;font-size:1rem}.distance-list>div:last-child{border-bottom:0}.distance-list strong{font-size:1.25rem;white-space:nowrap;font-variant-numeric:tabular-nums}.distance-list strong small{font-weight:400;color:var(--muted)}.normal-row>span{font-weight:650}.message{font-size:.875rem;color:#8f381e;background:#fff0e7;border:1px solid #ffd8c2;padding:10px 12px;border-radius:6px;margin:0 0 14px;overflow-wrap:anywhere}
.climb-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.climb-result{background:#f1f6fc;border-radius:8px;border-top:3px solid var(--blue);padding:17px;min-width:0}.position{font-size:.875rem;font-weight:700;margin:0 0 12px;display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}.position span{font-weight:400;color:var(--muted);text-transform:none}.gradient{display:flex;gap:9px;align-items:baseline;flex-wrap:wrap}.gradient strong{font-size:2.25rem;line-height:1.2;font-weight:750;font-variant-numeric:tabular-nums}.gradient span{font-size:.875rem;color:var(--muted)}.fpm{margin:6px 0 14px;font-size:1rem;color:var(--muted);font-variant-numeric:tabular-nums}.climb-result .message{margin-bottom:10px}.climb-result .detail-button{width:100%}
details{margin-top:16px}summary{font-weight:650;font-size:.875rem;padding:10px 0;min-height:44px}summary::marker{color:var(--blue)}.calculation{border-top:1px solid var(--line)}.calculation p{font-size:.875rem;margin:12px 0}.calculation .formula{background:#edf3f9;border-left:3px solid var(--blue);padding:12px;border-radius:3px;font-size:.875rem;overflow-wrap:anywhere}.trace-heading{font-size:.875rem;font-weight:700;margin-top:16px}.table-scroll{overflow:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:6px;margin-top:10px;max-width:100%}table{border-collapse:collapse;width:100%;font-size:.875rem;font-variant-numeric:tabular-nums}th,td{padding:9px 11px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap}th{background:#e8eff8;font-weight:650;color:var(--navy)}th:first-child,td:first-child{text-align:left}tr:last-child td{border-bottom:0}.result-cell{background:#fff1d9;font-weight:650}.bounds{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.bounds span{padding:4px 8px;background:#f0f5fa;border-radius:4px;font-size:.875rem}.reference-panel{margin-top:24px}.reference-panel>details{margin:0}.reference-panel>details+details{border-top:1px solid var(--line);margin-top:10px;padding-top:10px}.reference-panel>details>summary{font-size:1rem;display:list-item}.reference-panel summary span{font-size:.875rem;color:var(--muted);font-weight:400;margin-left:12px}.reference-panel h3{font-size:1rem;margin:24px 0 8px}.reference-panel p,.reference-panel li{font-size:.875rem}.conditions{padding:14px;background:#f3f7fb;border-radius:6px;margin:16px 0}.conditions p:first-child{margin-top:0}.conditions p:last-child{margin-bottom:0}.install ol{padding-left:22px}.install li{padding:4px 0}footer{font-size:.875rem;color:var(--muted);margin:20px 2px}footer p{margin:8px 0}button:active{transform:translateY(1px)}
@media(min-width:1050px){.inputs-panel{position:sticky;top:24px}}@media(max-width:820px){main{padding:20px 16px}.workspace{grid-template-columns:1fr;gap:18px}.panel{padding:20px}.results-column{gap:18px}.inputs-panel form{grid-template-columns:repeat(2,minmax(0,1fr))}.header-inner{align-items:flex-start}.connection{max-width:160px}.reference-panel{margin-top:18px}}@media(max-width:440px){.masthead{padding:20px 16px}.header-inner{flex-direction:column;gap:12px}.connection{max-width:none;padding:4px 9px}h1{font-size:1.5rem}.panel{padding:16px}.section-heading{gap:8px}.section-heading h2{font-size:1.05rem}.base-result{padding:16px}.base-result strong{font-size:2.2rem}.climb-grid{gap:10px}.climb-result{padding:13px 10px}.gradient strong{font-size:1.8rem}.detail-button{padding:8px;font-size:.875rem}.distance-list strong{font-size:1.15rem}form{gap:16px 12px}.reference-panel summary span{display:block;margin:4px 0 0 0}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}