@font-face{font-family:Maple Mono CN;src:url(/assets/MapleMono-CN-Regular-BZK3W6fy.woff2) format("woff2");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:Maple Mono CN;src:url(/assets/MapleMono-CN-Medium-CO4Gj6lC.woff2) format("woff2");font-weight:500;font-style:normal;font-display:swap}@font-face{font-family:Maple Mono CN;src:url(/assets/MapleMono-CN-SemiBold-D-lZwFXY.woff2) format("woff2");font-weight:600;font-style:normal;font-display:swap}:root{color-scheme:dark;--bg: #08111f;--panel: rgba(8, 17, 31, .74);--panel-border: rgba(255, 255, 255, .08);--text: #eef3ff;--muted: #97a5c4;--accent: #ffb703;--accent-2: #8ecae6}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:Maple Mono CN,PingFang SC,monospace;color:var(--text);background:radial-gradient(circle at top left,rgba(142,202,230,.3),transparent 30%),radial-gradient(circle at 80% 20%,rgba(255,183,3,.25),transparent 18%),linear-gradient(135deg,#02060f,#0c1830 58%,#08111f);padding:24px}.page-shell{width:min(100%,1080px);margin:0 auto;min-height:calc(100vh - 48px);display:flex;flex-direction:column}.page-header,.stage-panel{background:var(--panel);border:1px solid var(--panel-border);border-radius:28px;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.page-header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px 28px}.title-block{min-width:0}h1{margin:0;font-size:clamp(1.8rem,3.6vw,2.6rem);line-height:.96;font-weight:600}.controls{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}button{border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:12px 18px;font:inherit;font-weight:500;color:var(--text);background:#ffffff0f;cursor:pointer;transition:transform .16s ease,border-color .16s ease,background .16s ease}button:hover{transform:translateY(-1px);border-color:#ffb70373;background:#ffb70324}.stage-panel{margin-top:18px;padding:20px;flex:1;display:flex;flex-direction:column;min-height:0}.stage-wrap{position:relative;flex:1;min-height:0;border-radius:22px;overflow:hidden;background:linear-gradient(180deg,#ffffff08,#ffffff03);display:flex;align-items:center;justify-content:center}.solver-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#040a14b8;opacity:0;pointer-events:none;transition:opacity .18s ease}.solver-overlay.is-visible{opacity:1;pointer-events:auto}.solver-card{display:grid;justify-items:center;gap:16px;padding:24px 28px;border:1px solid rgba(255,255,255,.08);border-radius:20px;background:#08111fdb;box-shadow:0 18px 50px #00000047}.solver-card p{margin:0;font-weight:500}.solver-spinner{width:34px;height:34px;border:3px solid rgba(255,255,255,.14);border-top-color:var(--accent);border-radius:50%;animation:solver-spin .9s linear infinite}@keyframes solver-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}#scene{display:block;width:100%;height:100%}@media (max-width: 900px){body{padding:16px}.page-shell{min-height:calc(100vh - 32px)}.page-header{flex-direction:column;align-items:flex-start}.controls{width:100%;justify-content:flex-start}.stage-wrap{min-height:56vh}}