:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#080a10;--panel:#111722;--panel-strong:#161d2b;--line:#263245;--text:#f4f7fb;--muted:#9aa8bd;--cyan:#27e1f2;--lime:#b8ff5c;--pink:#ff4f9a;--amber:#ffc857;--danger:#ff6675;--shadow:0 18px 60px #00000059}*{box-sizing:border-box}html{background:var(--bg);min-height:100%}body.app-i23d{color:var(--text);background:linear-gradient(#27e1f217,#0000 34rem),radial-gradient(circle at 86% 6%,#b8ff5c12,#0000 26rem),#080a10;min-height:100vh;margin:0;font-family:Inter,Noto Sans JP,system-ui,sans-serif}.i23d-shell{max-width:1440px;margin:0 auto;padding:1.6rem clamp(1rem,3vw,2.4rem) 3rem}.i23d-header{border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:1.5rem;margin-bottom:1.4rem;padding-bottom:1.4rem;display:flex}.i23d-header .brand{letter-spacing:.02em;color:var(--cyan);font-size:.9rem;font-weight:800;text-decoration:none;display:inline-block}.i23d-header h1{letter-spacing:-.02em;margin:.35rem 0;font-size:clamp(1.7rem,3.2vw,2.4rem)}.i23d-header p{color:var(--muted);max-width:46ch;margin:0;font-size:.92rem}.i23d-header .nav-links{gap:.9rem;display:flex}.i23d-header .nav-links a{color:var(--muted);font-size:.88rem;font-weight:600;text-decoration:none}.i23d-header .nav-links a:hover{color:var(--text)}.i23d-body{grid-template-columns:minmax(300px,380px) 1fr;align-items:start;gap:1.4rem;display:grid}@media (max-width:940px){.i23d-body{grid-template-columns:1fr}}.i23d-panel{flex-direction:column;gap:1rem;display:flex}.block{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;padding:1.1rem 1.1rem 1.2rem}.block h2{letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 .8rem;font-size:.78rem;font-weight:700}.muted{color:var(--muted)}.small{font-size:.8rem}.dropzone{border:1.5px dashed var(--line);background:var(--panel-strong);cursor:pointer;border-radius:12px;place-items:center;min-height:180px;transition:border-color .15s,background .15s;display:grid;position:relative;overflow:hidden}.dropzone:hover,.dropzone:focus-visible,.dropzone.dragging{border-color:var(--cyan);background:#27e1f20f;outline:none}.dz-inner{text-align:center;justify-items:center;gap:.3rem;padding:1rem;font-size:.9rem;display:grid}.dz-icon{font-size:1.7rem}#preview{object-fit:contain;background:repeating-conic-gradient(#1a2230 0% 25%,#141b27 0% 50%) 50%/16px 16px;width:100%;max-height:280px;display:block}.samples{flex-wrap:wrap;align-items:center;gap:.4rem;margin-top:.75rem;font-size:.82rem;display:flex}.chip{border:1px solid var(--line);background:var(--panel-strong);color:var(--text);font:inherit;cursor:pointer;border-radius:999px;padding:.22rem .7rem;font-size:.8rem}.chip:hover{border-color:var(--cyan);color:var(--cyan)}button{font-family:inherit}.block>button,.row button,.primary{border:1px solid var(--line);background:var(--panel-strong);color:var(--text);cursor:pointer;border-radius:10px;padding:.6rem .9rem;font-size:.9rem;font-weight:700;transition:transform 80ms,filter .15s}.primary{background:linear-gradient(135deg, var(--cyan), #4ba3ff);color:#04121a;border-color:#0000;width:100%}.primary:hover:not(:disabled){filter:brightness(1.08)}.primary:active:not(:disabled){transform:translateY(1px)}button:disabled{opacity:.45;cursor:not-allowed}.row{grid-template-columns:auto 1fr;gap:.6rem;margin-top:1rem;display:grid}.row button{white-space:nowrap}.status{color:var(--muted);min-height:1.2em;margin:.7rem 0 0;font-size:.85rem}.status.error{color:var(--danger)}.status.done{color:var(--lime)}.progress{background:var(--panel-strong);border-radius:999px;height:5px;margin-top:.6rem;overflow:hidden}.progress span{background:linear-gradient(90deg, var(--cyan), var(--lime));border-radius:999px;width:0%;height:100%;transition:width .2s;display:block}.progress.indeterminate span{width:40%;animation:1.1s ease-in-out infinite slide}@keyframes slide{0%{transform:translate(-110%)}to{transform:translate(280%)}}.ctl{margin-bottom:.85rem;display:block}.ctl>span{color:var(--muted);justify-content:space-between;margin-bottom:.28rem;font-size:.83rem;display:flex}.ctl em{font-variant-numeric:tabular-nums;color:var(--text);font-style:normal;font-weight:700}input[type=range]{width:100%;accent-color:var(--cyan)}.seg{background:var(--panel-strong);border:1px solid var(--line);border-radius:10px;grid-template-columns:repeat(3,1fr);gap:.3rem;margin-top:.4rem;padding:.25rem;display:grid}.seg button{color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:7px;padding:.4rem .2rem;font-size:.8rem;font-weight:700}.seg button.on{color:var(--cyan);background:#27e1f224}.stats{grid-template-columns:auto 1fr;gap:.3rem 1rem;margin:0;font-size:.85rem;display:grid}.stats dt{color:var(--muted)}.stats dd{font-variant-numeric:tabular-nums;margin:0;font-weight:600}.depth-view{margin-top:.9rem}.depth-view summary{cursor:pointer;color:var(--muted);font-size:.82rem}#depth-canvas{border:1px solid var(--line);border-radius:8px;width:100%;margin-top:.6rem;display:block}.notes p{color:var(--muted);margin:0 0 .6rem;font-size:.84rem;line-height:1.65}.notes p:last-child{margin-bottom:0}.notes strong{color:var(--text)}.i23d-stage{border:1px solid var(--line);background:radial-gradient(circle at 50% 30%, #27e1f212, transparent 60%), var(--panel);height:calc(100vh - 13rem);min-height:520px;box-shadow:var(--shadow);border-radius:18px;position:relative;overflow:hidden}@media (max-width:940px){.i23d-stage{height:70vh}}.stage-canvas{position:absolute;inset:0}.stage-canvas canvas{display:block}.stage-hint{text-align:center;pointer-events:none;color:var(--muted);place-content:center;justify-items:center;gap:.3rem;display:grid;position:absolute;inset:0}.stage-hint p{color:var(--text);margin:0;font-size:1.05rem;font-weight:700}.stage-hint[hidden]{display:none}