.article-main{max-width:1120px}.intro{max-width:900px}.experiment{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,1fr);border:1px solid var(--line);border-radius:22px;overflow:hidden;background:white}.drawing{background:#faf8fc;padding:18px;min-width:0}.drawing svg{display:block;width:100%;height:auto;font-family:Arial,sans-serif}.origin-label{fill:#605e6e;font-size:16px}.vector-label{font-size:18px;font-weight:bold;paint-order:stroke;stroke:#faf8fc;stroke-width:5px;stroke-linejoin:round}.legend{display:flex;flex-wrap:wrap;gap:10px 20px;font-size:.87rem;font-weight:bold}.key-x{color:#286d91}.key-y{color:#a54d23}.key-v{color:#684890}.key-angle{color:#756e7f}.drawing-note{color:var(--muted);font-size:.85rem;line-height:1.6;margin:12px 0 0}.values{padding:28px;min-width:0}.values>p{line-height:1.6;color:var(--muted)}.values h2{font-size:1.4rem}.values label{display:block;font-weight:bold;margin:20px 0}.input-unit{display:flex;align-items:center;gap:12px;margin-top:8px}.input-unit input{width:100%;min-width:0;font:inherit;font-weight:normal;padding:12px;border:1px solid #b8adc4;border-radius:9px;background:#fff}.input-unit>span{min-width:32px;font-weight:normal}.values button{display:block;width:100%;padding:13px 16px;border:1px solid var(--purple);border-radius:10px;background:var(--purple);color:white;font:inherit;font-weight:bold;cursor:pointer;margin-top:12px}.values button.secondary{background:white;color:var(--purple)}.values button:disabled{opacity:.5;cursor:not-allowed}.values input:focus-visible,.values button:focus-visible{outline:3px solid #d38857;outline-offset:3px}.values input[aria-invalid=true]{border-color:#aa492d}.values .feedback{padding:14px;border-radius:10px;background:#f0e9f6;color:#514762;margin-top:20px}.values .feedback.warning{background:#fff0de;color:#864414}.values .feedback.success{background:#e6f3ed;color:#24624d}.values .calculation{font-size:.9rem;overflow-wrap:anywhere}.takeaway{max-width:850px}.tasks{margin-top:32px;line-height:1.8;max-width:850px}.tasks li{padding:5px 0}@media(max-width:800px){.experiment{grid-template-columns:1fr}.values{padding:24px}.drawing{padding:12px}}@media(max-width:480px){.legend{font-size:.8rem;gap:8px 12px}}
.flight-section{margin-top:36px;padding:26px;border:1px solid var(--line);border-radius:22px;background:white}.flight-section>p{line-height:1.65;color:var(--muted)}#flight-scene{display:block;width:100%;height:auto;background:#faf8fc;border-radius:12px}.flight-controls{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:20px}.flight-controls button{padding:13px 20px;background:var(--purple);color:white;border:1px solid var(--purple);border-radius:10px;font:inherit;font-weight:bold;cursor:pointer}.flight-controls button:disabled{opacity:.5;cursor:not-allowed}.flight-controls button:focus-visible{outline:3px solid #d38857;outline-offset:3px}.flight-controls output{font-variant-numeric:tabular-nums;line-height:1.6}#flight-status{margin:18px 0 0}@media(max-width:480px){.flight-section{padding:14px}.flight-controls{gap:12px}}