:root{color-scheme:dark;--bg:#061521;--panel:#0c2433;--panel2:#102e3f;--line:#24495d;--text:#f3f7f8;--muted:#9cb1bd;--cyan:#40d7e6;--green:#54dc8a;--amber:#ffbf47;--red:#ff6b68;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% 0,#12384a 0,transparent 34rem),var(--bg);color:var(--text);font-size:16px;line-height:1.45}header,main,footer{width:min(1180px,calc(100% - 32px));margin:auto}header{display:flex;align-items:center;justify-content:space-between;padding:28px 0 20px;gap:18px}h1,h2,p{margin:0}h1{font-size:clamp(1.8rem,5vw,2.8rem);letter-spacing:-.03em}h2{font-size:1.2rem}.eyebrow{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);font-weight:800}.sub,.micro{color:var(--muted)}.sub{margin-top:3px}.micro{font-size:.78rem}.header-actions{display:flex;align-items:center;gap:10px}.offline-pill{font-size:.75rem;color:var(--green);white-space:nowrap}.offline-pill:before{content:"";display:inline-block;width:7px;height:7px;background:currentColor;border-radius:50%;margin-right:6px}button{min-height:44px;border-radius:10px;border:1px solid var(--line);padding:0 16px;font:inherit;font-weight:700;color:var(--text);background:var(--panel2);cursor:pointer}.text-button{color:var(--cyan);background:transparent;border:0}.banner{display:flex;gap:10px;padding:14px 18px;border:1px solid var(--line);border-left:5px solid var(--amber);border-radius:12px;background:#182b32;margin-bottom:16px}.banner.pass{border-left-color:var(--green);background:#0d3028}.banner.fail{border-left-color:var(--red);background:#351c24}.layout{display:grid;grid-template-columns:1fr 1fr;gap:16px}.panel{border:1px solid var(--line);background:linear-gradient(145deg,rgba(16,46,63,.94),rgba(9,31,44,.96));border-radius:16px;padding:20px;box-shadow:0 18px 45px #0004}.section-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:17px}.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}label{font-weight:700}.unit{float:right;color:var(--muted);font-size:.75rem;margin-top:4px}input{display:block;width:100%;height:52px;margin-top:6px;padding:0 12px;border:1px solid var(--line);border-radius:9px;background:#071b28;color:var(--text);font:700 1.2rem ui-monospace,SFMono-Regular,monospace}input:focus{outline:3px solid #40d7e644;border-color:var(--cyan)}input.invalid{border-color:var(--red)}.error{color:#ffaaa8;min-height:20px;display:block;font-size:.78rem;line-height:1.25}.fuel{grid-column:1/-1}.gauges{display:grid;grid-template-columns:1fr 1fr;gap:10px}.gauge{background:#071b28;border:1px solid var(--line);border-radius:12px;padding:14px}.gauge span,.gauge small{display:block;color:var(--muted);font-size:.75rem}.gauge strong{font:800 1.65rem ui-monospace,SFMono-Regular,monospace}.gauge.primary strong{color:var(--cyan)}.mode-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0 7px}.mode{border-radius:10px;background:#1e333c;padding:10px}.mode span,.mode strong{display:block}.mode span{font-size:.72rem;color:var(--muted)}.mode strong{font-size:.9rem}.mode.pass strong{color:var(--green)}.mode.fail strong{color:var(--red)}.chart-panel{grid-column:1/-1}.legend{display:flex;gap:16px;font-weight:800;font-size:.75rem}.legend span:before{content:"";width:9px;height:9px;display:inline-block;border-radius:50%;background:var(--cyan);margin-right:5px}.legend .zf:before{background:var(--amber)}svg{display:block;width:100%;height:auto;max-height:330px;background:#071b28;border-radius:12px}.normal-envelope{fill:#ffbf471c;stroke:var(--amber);stroke-width:2}.aero-envelope{fill:#54dc8a20;stroke:var(--green);stroke-width:2}.axis{fill:var(--muted);font-size:11px;text-anchor:middle;font-weight:700}.grid-line{stroke:#24495d;stroke-width:1}.tick{fill:var(--muted);font-size:10px}.point circle{fill:var(--cyan);stroke:#fff;stroke-width:2}.point text{fill:#fff;font-size:11px;font-weight:900;transform:translate(11px,-10px)}.point.zf circle{fill:var(--amber)}#burnLine{stroke:#fff;stroke-width:2;stroke-dasharray:5 5}.checklist ul{list-style:none;padding:0;margin:12px 0 0}.checklist li{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:10px 0;gap:12px}.checklist b.pass{color:var(--green)}.checklist b.fail{color:var(--red)}.guidance h2{margin:4px 0 8px}.safety{margin:16px 0;padding:18px;border:1px solid #765b27;background:#2a2418;border-radius:12px;color:#f6e6bf}.safety details{margin-top:12px}.safety summary{min-height:44px;display:flex;align-items:center;cursor:pointer;font-weight:700}.safety details p{color:#dbcda9}footer{display:flex;justify-content:space-between;padding:22px 0 34px;color:var(--muted);font-size:.75rem}@media(max-width:720px){header,main,footer{width:min(100% - 20px,1180px)}header{align-items:flex-start;padding-top:18px}.header-actions{flex-direction:column-reverse;align-items:flex-end}.layout{grid-template-columns:1fr}.chart-panel{grid-column:auto}.input-grid{gap:10px}.panel{padding:16px}.banner{flex-direction:column;gap:2px}.offline-pill{font-size:.68rem}}@media(max-width:390px){.gauges{grid-template-columns:1fr 1fr}.gauge{padding:10px}.gauge strong{font-size:1.35rem}.input-grid{grid-template-columns:1fr}.fuel{grid-column:auto}h1{font-size:1.7rem}.sub{font-size:.85rem}}@media print{body{background:#fff;color:#000}.header-actions,.text-button{display:none}.panel,.banner,.safety{background:#fff;color:#000;box-shadow:none;break-inside:avoid}.layout{display:block}.panel{margin-bottom:12px}.muted,.micro,.sub{color:#444}footer{color:#333}}