:root{--bg:#f5f6fa;--pn:#fff;--tx:#14161f;--mu:#667085;--ac:#4f46e5;--ac2:#fff;--bd:#e2e4ee;--sh:0 8px 30px rgba(20,22,40,.08);color-scheme:light;box-sizing:border-box}@media(prefers-color-scheme:dark){:root:not([data-theme]){--bg:#101218;--pn:#1a1d27;--tx:#eceef6;--mu:#9aa1b5;--ac:#8b85ff;--ac2:#10121a;--bd:#2c3040;--sh:0 8px 30px rgba(0,0,0,.4);color-scheme:dark}}:root[data-theme=dark]{--bg:#101218;--pn:#1a1d27;--tx:#eceef6;--mu:#9aa1b5;--ac:#8b85ff;--ac2:#10121a;--bd:#2c3040;--sh:0 8px 30px rgba(0,0,0,.4);color-scheme:dark}:root[data-theme=midnight]{--bg:#0a0f24;--pn:#131b3a;--tx:#e6ebff;--mu:#8e9bc9;--ac:#5eead4;--ac2:#06231f;--bd:#26325e;--sh:0 8px 30px rgba(0,0,0,.45);color-scheme:dark}:root[data-theme=ocean]{--bg:#e8f5fb;--tx:#0b2a3a;--mu:#4f7285;--ac:#0284c7;--bd:#cde5f0}:root[data-theme=forest]{--bg:#edf5ee;--tx:#17301f;--mu:#587061;--ac:#2f855a;--bd:#d0e2d3}:root[data-theme=sunset]{--bg:#fff3ea;--tx:#3a1d12;--mu:#85604f;--ac:#e8590c;--bd:#f2d8c6}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--tx);font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}header{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--pn);border-bottom:1px solid var(--bd)}.logo{font-weight:800;font-size:19px;letter-spacing:-.3px}.logo i{font-style:normal;color:var(--ac)}nav{display:flex;gap:6px;flex-wrap:wrap}.btn,button,nav button{font:inherit;cursor:pointer;border:1px solid var(--bd);background:var(--pn);color:var(--tx);padding:8px 14px;border-radius:10px}.pri,nav button.on{background:var(--ac);color:var(--ac2);border-color:var(--ac);font-weight:600}button:disabled{opacity:.45;cursor:not-allowed}input[type=number],select{font:inherit;color:var(--tx);background:var(--bg);border:1px solid var(--bd);border-radius:8px;padding:7px 9px;width:100%}main{max-width:1000px;margin:0 auto;padding:20px 16px 48px}.card{background:var(--pn);border:1px solid var(--bd);border-radius:16px;padding:20px;box-shadow:var(--sh);margin-bottom:16px}h2{margin:0 0 4px;font-size:20px}.mu{color:var(--mu);margin:0 0 14px;font-size:14px}.steps{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap}.steps span{padding:5px 12px;border-radius:99px;border:1px solid var(--bd);color:var(--mu);font-size:13px}.steps .on{background:var(--ac);color:var(--ac2);border-color:var(--ac)}.drop{display:flex;flex-direction:column;align-items:center;gap:4px;padding:34px 16px;border:2px dashed var(--bd);border-radius:14px;text-align:center;cursor:pointer;color:var(--mu)}.drop b{color:var(--tx);font-size:17px}.drop.hv,.drop:hover{border-color:var(--ac)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));grid-gap:12px;gap:12px;margin:14px 0}.grid label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--mu)}.grid input[type=range]{width:100%;accent-color:var(--ac)}.chk{flex-direction:row!important;align-items:center;gap:8px!important;color:var(--tx)!important;font-size:14px!important}.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}#cvWrap{display:flex;justify-content:center;background:repeating-conic-gradient(var(--bd) 0 25%,transparent 0 50%) 0 0/16px 16px;border-radius:12px;padding:8px;margin-top:8px}#cv{max-width:100%;touch-action:none;cursor:crosshair;border-radius:6px}#shw{display:flex;justify-content:center;padding:16px;background:var(--bg);border-radius:12px;margin-top:8px;overflow-x:auto}#sh{max-width:100%;height:auto;box-shadow:0 6px 24px rgba(0,0,0,.25);background:#fff}.hid{display:none!important}.res div{display:flex;justify-content:space-between;gap:10px;padding:7px 0;border-bottom:1px solid var(--bd);font-size:14px}.res span:last-child{color:var(--ac);font-weight:600;white-space:nowrap}#toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--tx);color:var(--bg);padding:10px 16px;border-radius:10px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .2s;max-width:90vw}#toast.on{opacity:1}