:root{--bg:#0b1220;--panel:#0f172a;--card:#152036;--line:#22304b;--text:#e2e8f0;--muted:#94a3b8;--accent:#38bdf8;--lift:#4ade80;--drag:#f87171;--res:#facc15;--weight:#c084fc;--warn:#fb923c;--header:52px}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;color:var(--text);margin:0;font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}html[lang=fr] [data-l=en],html[lang=en] [data-l=fr]{display:none}button{font:inherit;color:var(--text);background:var(--card);border:1px solid var(--line);cursor:pointer;border-radius:8px;padding:5px 10px}button:hover{border-color:var(--accent)}.select{width:100%;font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);cursor:pointer;border-radius:8px;padding:6px 8px}.select:hover,.select:focus{border-color:var(--accent);outline:none}button.active{background:var(--accent);border-color:var(--accent);color:#04121f;font-weight:600}.topbar{height:var(--header);border-bottom:1px solid 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dd{text-align:right;font-variant-numeric:tabular-nums;margin:0;font-weight:600}.c-lift{color:var(--lift)}.c-drag{color:var(--drag)}.c-res{color:var(--res)}.c-weight{color:var(--weight)}.c-vs{color:var(--drag)}.formula{background:var(--bg);color:var(--muted);overflow-wrap:anywhere;white-space:pre-line;border-radius:8px;margin-top:10px;padding:8px 10px;font:12px/1.5 ui-monospace,SF Mono,Menlo,monospace}.chart{width:100%;height:auto;display:block}.chart .grid{stroke:var(--line)}.chart .axis{stroke:#3b4a6b}.chart text{fill:var(--muted);font-size:10px}.chart .zone{fill:#f871711a}.chart .curve{fill:none;stroke:var(--accent);stroke-width:2px}.chart .section-curve{fill:none;stroke:var(--accent);stroke-width:1.2px;stroke-dasharray:3 3;opacity:.5}.chart .req{stroke:var(--weight);stroke-dasharray:5 3}.chart .guide{stroke:var(--res);stroke-dasharray:2 3}.chart .dot{fill:var(--res);stroke:var(--bg);stroke-width:2px}.caption{color:var(--muted);margin:6px 0 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dt{margin-top:12px;font-weight:650}.glossary dd{color:#cbd5e1;margin:2px 0 0}.muted{font-size:13px;color:var(--muted)!important}@media (width<=900px){.layout{grid-template-columns:1fr;height:auto}.stage{height:58vh;min-height:320px}.panel{border-left:0;overflow:visible}.brand .sub{display:none}}@media (width<=480px){.topbar{gap:8px;padding:0 12px}.brand h1{font-size:16px}.actions{gap:6px}.share-btn{padding:5px 8px}.share-btn span{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.hint{display:none}.hud{flex-wrap:nowrap;justify-content:space-between;right:14px}.hud div{padding:0 5px}.hud b{white-space:nowrap;font-size:13px}.pressure-key{flex-direction:column;gap:3px}.pressure-key .bar{width:70px}}@media (pointer:coarse){.hint{display:none}}@media (width<=400px){.repo-link{display:none}}