.vvc{--ink:#123f39;--muted:#66837e;--green:#078574;--deep:#082f2b;--line:#d5e7e3;--purple:#7057e8;--pink:#e75683;margin:-12px -22px 0;padding:.75rem 0 4rem;background:#f4fbfa;color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif}.vvc *{box-sizing:border-box}.vvc [hidden]{display:none!important}.vvc-shell{width:min(1040px,calc(100% - 40px));margin:auto}.vvc-crumb{display:flex;flex-wrap:wrap;gap:.55rem;margin-bottom:1.2rem;color:#6e8985;font-size:.72rem}.vvc-crumb a{color:inherit;text-decoration:none}.vvc-header{display:flex;align-items:flex-end;justify-content:space-between;gap:2rem}.vvc-header>div:first-child>span{color:var(--purple);font-size:.68rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}.vvc-header h1{margin:.55rem 0 .45rem;color:var(--ink);font:700 clamp(2.3rem,5vw,3.7rem)/.98 Georgia,serif;letter-spacing:-.04em}.vvc-header p{margin:0 0 1.2rem;color:var(--muted)}.vvc-progress{display:grid;width:160px;gap:.45rem;margin-bottom:1.4rem;text-align:right}.vvc-progress strong{color:var(--purple);font-size:.7rem}.vvc-progress i{height:7px;border-radius:99px;background:#e2dfff}.vvc-progress i b{display:block;height:100%;border-radius:inherit;background:var(--purple)}.vvc-target{display:flex;align-items:center;gap:.65rem;margin-bottom:1rem;padding:.85rem 1rem;border:1px solid #dad3ff;border-radius:15px;background:#f1efff}.vvc-target>span{margin-right:auto;color:var(--purple);font-size:.67rem;font-weight:900;letter-spacing:.13em;text-transform:uppercase}.vvc-target strong{padding:.5rem .75rem;border-radius:9px;background:#fff;color:#5544ac;font-size:.75rem}.vvc-lab{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(290px,.8fr);gap:1.2rem;padding:1.4rem;border-radius:26px;background:var(--deep);box-shadow:0 22px 50px rgba(8,63,56,.13);color:#fff}.vvc-stage{overflow:hidden;border-radius:18px;background:#061f1d}.vvc-stage svg{width:100%;height:auto;touch-action:none}.vvc-stage .grid{fill:url(#vvc-grid)}.vvc-stage pattern path{fill:none;stroke:#7da099;stroke-width:1;opacity:.14}.vvc-stage .axis{fill:none;stroke:#8aacA6;stroke-width:1.5}.vvc-stage .axis-text{fill:#aac9c4;font-size:14px;font-weight:900}.vvc-stage .component{stroke-width:2.5;stroke-dasharray:7 5}.vvc-stage .component.x{stroke:#35d0ba;marker-end:url(#vvc-arrow-b)}.vvc-stage .component.y{stroke:#ff6e9e;marker-end:url(#vvc-arrow-b)}.vvc-stage .projection{fill:none;stroke:#a9c4bf;stroke-width:1.5;stroke-dasharray:7 5}.vvc-stage .vector-b{stroke:#9770ff;stroke-width:5;marker-end:url(#vvc-arrow-b)}.vvc-stage .vector-a{fill:none;stroke:#35d0ba;stroke-width:4;marker-end:url(#vvc-arrow-a)}.vvc-stage .resultant{fill:none;stroke:#fff;stroke-width:3;stroke-dasharray:7 5;marker-end:url(#vvc-arrow-r)}.vvc-stage marker path{fill:context-stroke}.vvc-stage .label-a{fill:#62dfcc}.vvc-stage .label-b{fill:#b597ff}.vvc-stage .label-r{fill:#fff}.vvc-stage text{font-size:13px;font-weight:900}.vvc-stage .origin{fill:#fff}.vvc-stage .handle{fill:#9770ff;stroke:#fff;stroke-width:2;cursor:grab}.vvc-controls{display:flex;flex-direction:column;justify-content:center;gap:.8rem}.vvc-controls>span{color:#7ee1d0;font-size:.67rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}.vvc-controls h2{margin:0;color:#fff;font:700 1.65rem Georgia,serif}.vvc-controls>p{margin:0;color:#a9c9c3;font-size:.77rem;line-height:1.5}.vvc-controls label{display:grid;grid-template-columns:1fr auto;gap:.45rem;font-size:.73rem;font-weight:800}.vvc-controls input{grid-column:1/-1;width:100%;accent-color:#50d6c2}.vvc-live{display:grid;grid-template-columns:1fr 1fr;gap:.6rem}.vvc-live span{display:grid;gap:.25rem;padding:.7rem;border-radius:10px;background:rgba(255,255,255,.09);color:#89d9cd;font-size:.64rem}.vvc-live strong{color:#fff;font-size:1rem}.vvc-result{display:grid;gap:.3rem;padding:.8rem;border-radius:11px;background:rgba(255,255,255,.1)}.vvc-result small{color:#7ddcca;text-transform:uppercase}.vvc-actions{display:grid;grid-template-columns:auto auto 1fr;gap:.5rem}.vvc-actions button{padding:.6rem .65rem;border:0;border-radius:9px;background:#fff;color:var(--green);font-weight:900;cursor:pointer}.vvc-actions .ghost{border:1px solid rgba(255,255,255,.25);background:transparent;color:#fff}.vvc-feedback,.vvc-hint{margin:.8rem 0 0;padding:.9rem 1rem;border-radius:12px;font-size:.8rem;line-height:1.5}.vvc-feedback{background:#e8f7f3;color:#087365}.vvc-feedback.wrong{background:#fff0f5;color:#a34161}.vvc-hint{display:flex;gap:.8rem;background:#fff4e7;color:#705940}.vvc-hint strong{color:#c86c1f}.vvc-explanation{margin-top:1rem;border:1px solid var(--line);border-radius:20px;background:#fff;overflow:hidden}.vvc-explanation>summary{display:grid;grid-template-columns:1fr auto 34px;align-items:center;gap:1rem;padding:1.1rem 1.2rem;cursor:pointer;list-style:none}.vvc-explanation>summary::-webkit-details-marker{display:none}.vvc-explanation>summary span{color:var(--green);font-size:.66rem;font-weight:900;text-transform:uppercase}.vvc-explanation>summary strong{font:700 1.05rem Georgia,serif}.vvc-explanation>summary b{display:grid;width:32px;height:32px;place-items:center;border-radius:50%;background:#e8f7f3;color:var(--green)}.vvc-explanation[open]>summary b{transform:rotate(180deg)}.vvc-explanation>div{display:grid;grid-template-columns:.8fr 1.2fr;gap:1rem;padding:1.2rem;border-top:1px solid var(--line)}.vvc-explanation>div>div{display:grid;min-height:110px;place-items:center;padding:1rem;border-radius:14px;background:#f1efff;color:var(--purple);font:800 1rem/1.6 Georgia,serif;text-align:center}.vvc-explanation p{align-self:center;color:var(--muted);font-size:.84rem;line-height:1.65}.vvc-pagination{display:grid;grid-template-columns:1fr auto 1fr;gap:1rem;margin-top:1.2rem;padding-top:1rem;border-top:1px solid var(--line)}.vvc-pagination a{color:var(--green);font-size:.75rem;font-weight:900;text-decoration:none}.vvc-pagination a:last-child{text-align:right}.vvc-pagination span{color:var(--muted);font-size:.64rem;text-align:center}
@media(max-width:760px){.vvc{margin:-12px -14px 0;padding-top:.5rem}.vvc-shell{width:min(100% - 24px,560px)}.vvc-header{align-items:stretch;flex-direction:column;gap:0}.vvc-header h1{font-size:2.3rem}.vvc-progress{width:100%;margin-bottom:1rem;text-align:left}.vvc-target{align-items:flex-start;flex-wrap:wrap}.vvc-target>span{width:100%}.vvc-lab{grid-template-columns:1fr;padding:1rem}.vvc-stage svg{min-height:320px}.vvc-explanation>summary{grid-template-columns:1fr 32px}.vvc-explanation>summary strong{display:none}.vvc-explanation>div{grid-template-columns:1fr}.vvc-pagination{grid-template-columns:1fr 1fr}.vvc-pagination span{display:none}}
@media(max-width:430px){.vvc-header h1{font-size:2rem}.vvc-target strong{font-size:.66rem}.vvc-actions{grid-template-columns:1fr 1fr}.vvc-actions button:last-child{grid-column:1/-1}.vvc-stage svg{min-height:280px}}
.vvc-stage .handle:focus-visible{stroke:#ffd36d;stroke-width:5}.vvc-controls>span,.vvc-live span,.vvc-explanation>summary span,.vvc-pagination span{font-size:.72rem}