:root{--bg-deep:#050810;--bg-panel:rgba(8, 18, 32, 0.82);--border:rgba(0, 212, 255, 0.22);--accent:#00d4ff;--accent-dim:rgba(0, 212, 255, 0.45);--accent-warm:#ff6b35;--text:#e8f4fc;--text-muted:#7a9bb8;--glow:0 0 24px rgba(0, 212, 255, 0.15);--font-display:"Orbitron",sans-serif;--font-body:"Noto Sans SC",sans-serif;--panel-width:320px}*{box-sizing:border-box;margin:0;padding:0}body,html{width:100%;height:100%;overflow:hidden;font-family:var(--font-body);background:var(--bg-deep);color:var(--text)}body::before{content:"";position:fixed;inset:0;background:radial-gradient(ellipse 80% 50% at 70% 20%,rgba(0,100,180,.12),transparent),radial-gradient(ellipse 60% 40% at 20% 80%,rgba(0,212,255,.06),transparent);pointer-events:none;z-index:0}.app{display:grid;grid-template-columns:auto 1fr;grid-template-rows:minmax(0,1fr);width:100%;height:100%;min-height:100vh;min-height:100dvh;position:relative;z-index:1}.panel-column{position:relative;width:var(--panel-width);flex-shrink:0;min-height:0;overflow:visible;transition:width .22s}.app.panel-collapsed .panel-column{width:0;min-width:0}.panel{display:flex;flex-direction:column;width:100%;height:100%;min-height:0;min-width:0;padding:0;background:var(--bg-panel);backdrop-filter:blur(8px);box-shadow:var(--glow);border-right:1px solid var(--border);overflow:hidden;transition:opacity .18s,border-color .22s}.app.panel-collapsed .panel{border-right-color:transparent;opacity:0;pointer-events:none}.panel-body{display:flex;flex-direction:column;gap:8px;flex:1 1 auto;min-width:0;min-height:0;overflow-x:hidden;overflow-y:auto;padding:0;scrollbar-width:thin;scrollbar-color:var(--accent-dim) transparent}.panel-header{flex-shrink:0;padding:18px 14px 14px;border-bottom:1px solid var(--border);background:linear-gradient(165deg,rgba(0,212,255,.14) 0,rgba(0,100,160,.06) 45%,transparent 100%);box-shadow:inset 0 -1px 0 rgba(0,212,255,.1)}.panel-title{margin:0;font-family:var(--font-body);font-size:1.2rem;font-weight:700;letter-spacing:.12em;line-height:1.4;color:#f2fbff;text-shadow:0 0 14px rgba(0,212,255,.65),0 0 32px rgba(0,212,255,.3),0 1px 2px rgba(0,0,0,.45)}.panel-title-mark{font-family:var(--font-display);font-weight:800;font-size:1.22em;letter-spacing:.06em;color:var(--accent);margin:0 .1em;vertical-align:-.02em;text-shadow:0 0 18px rgba(0,212,255,.95),0 0 36px rgba(0,212,255,.45)}.section-label{font-family:var(--font-display);font-size:.62rem;letter-spacing:.2em;color:var(--accent);margin:0 0 8px;opacity:.9}.section-label-sub{font-family:var(--font-body);font-size:.75rem;letter-spacing:.04em;color:var(--text-muted);font-weight:400}.panel-body>.control-group{margin:0 10px;padding:10px 10px 11px;border:1px solid var(--border);border-radius:8px;background:rgba(0,20,40,.5)}.app.panel-collapsed .panel-body,.panel-body>.control-group[hidden]{display:none}.panel-toggle-btn{position:absolute;left:100%;top:50%;z-index:20;transform:translateY(-50%);box-sizing:border-box;width:28px;height:52px;padding:0;margin:0;font-size:13px;line-height:1;border-radius:0 8px 8px 0;border:1px solid var(--border);border-left:none;background:rgba(8,18,32,.95);color:var(--text);cursor:pointer;font-family:inherit;box-shadow:4px 0 16px rgba(0,0,0,.35);transition:background .2s,border-color .2s,color .2s,box-shadow .2s}.panel-toggle-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(0,212,255,.12);box-shadow:4px 0 20px rgba(0,212,255,.2)}.panel-toggle-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.subtitle{margin:8px 0 16px;color:var(--text-muted);line-height:1.5}.slider-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:8px 10px}.slider-row-playback{grid-template-columns:auto 1fr auto}.slider-row-date{margin-bottom:8px;grid-template-columns:auto minmax(0,1fr) max-content}.slider-row-date input[type=range]{width:100%;min-width:0}.slider-row-date .slider-val{min-width:6.5em;font-size:.68rem;letter-spacing:.02em}#dateControlGroup .slider-row-date .slider-val{min-width:2.8em}#solarMotionDateGroup .slider-row-date .slider-val{min-width:0}.date-val-group{display:flex;align-items:center;gap:4px;flex-shrink:0;justify-content:flex-end}.date-picker-btn{display:flex;align-items:center;justify-content:center;width:22px;height:22px;padding:0;border:1px solid var(--border);border-radius:4px;background:rgba(0,40,70,.5);color:var(--accent-dim);cursor:pointer;flex-shrink:0;transition:color .15s,border-color .15s,background .15s}.date-picker-btn:hover{color:var(--accent);border-color:var(--accent);background:rgba(0,212,255,.1)}.date-picker-btn:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.date-picker-icon{display:block}.date-picker-input{position:absolute;width:0;height:0;opacity:0;pointer-events:none;overflow:hidden}.slider-row-lat{grid-template-columns:auto minmax(0,1fr) max-content}.slider-row-lat input[type=range]{width:100%;min-width:0}.lat-input-group{display:flex;align-items:center;gap:6px;flex-shrink:0}.lat-input{width:4.5em;min-width:40px;height:22px;padding:0 8px;border:1px solid var(--border);border-radius:4px;background:rgba(0,40,70,.5);color:var(--accent);font-family:var(--font-display);font-size:.68rem;line-height:1.25;text-align:center;outline:0;transition:border-color .15s,box-shadow .15s}.lat-hemisphere-btn{display:flex;align-items:center;justify-content:center;min-width:2.2em;height:22px;padding:0 6px;border:1px solid var(--border);border-radius:4px;background:rgba(0,40,70,.5);color:var(--accent-dim);font-family:var(--font-display);font-size:.68rem;line-height:1;cursor:pointer;flex-shrink:0;transition:color .15s,border-color .15s,background .15s,box-shadow .15s}.lat-hemisphere-btn:hover{color:var(--accent);border-color:var(--accent);background:rgba(0,212,255,.1);box-shadow:0 0 10px rgba(0,212,255,.12)}.lat-hemisphere-btn:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.lat-hemisphere-btn.is-north{color:var(--accent)}.lat-hemisphere-btn.is-south{color:var(--accent-warm)}.lat-input:focus,.lat-input:hover{border-color:var(--accent);box-shadow:0 0 10px rgba(0,212,255,.12)}.lat-input:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.lat-input.invalid{border-color:var(--accent-warm);color:var(--accent-warm)}.slider-row-shadow-val{grid-template-columns:auto minmax(0,1fr) max-content}.slider-row-shadow-val input[type=range]{width:100%;min-width:0}.shadow-val-group{display:flex;align-items:center;flex-shrink:0}.shadow-val-input{width:4.5em;min-width:40px;height:22px;padding:0 8px;border:1px solid var(--border);border-radius:4px;background:rgba(0,40,70,.5);color:var(--accent);font-family:var(--font-display);font-size:.68rem;line-height:1.25;text-align:center;outline:0;transition:border-color .15s,box-shadow .15s}.shadow-val-input:focus,.shadow-val-input:hover{border-color:var(--accent);box-shadow:0 0 10px rgba(0,212,255,.12)}.shadow-val-input:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.shadow-val-input.invalid{border-color:var(--accent-warm);color:var(--accent-warm)}.slider-label{font-size:.75rem;color:var(--text-muted);white-space:nowrap}.slider-val{font-family:var(--font-display);font-size:.7rem;color:var(--accent);white-space:nowrap;text-align:right;min-width:2.8em}.panel-select{width:100%;padding:6px 32px 6px 11px;border:1px solid var(--border);border-radius:6px;background:rgba(0,40,70,.5);color:var(--text);font-family:var(--font-body);font-size:.82rem;line-height:1.25;cursor:pointer;outline:0;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2300d4ff' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;transition:border-color .2s,box-shadow .2s}.panel-select:focus,.panel-select:hover{border-color:var(--accent);box-shadow:0 0 12px rgba(0,212,255,.15)}.panel-select option{background:#0a1828;color:var(--text)}.panel-select-inline{grid-column:2/-1;width:100%;min-width:0}.panel-select-compact{width:auto!important;min-width:3.6em;max-width:5.2em;padding:4px 24px 4px 7px!important;font-size:.74rem;line-height:1.2}.control-group-layers .layer-check-meridian-cb,.control-group-layers .layer-checkboxes>label,.preset-cities-checkboxes>label,.ref-point-check-label{display:flex;align-items:flex-start;gap:6px;margin-bottom:0;font-size:.75rem;line-height:1.35;color:var(--text-muted);font-family:var(--font-body)}.control-group input[type=checkbox]{width:auto;margin-right:8px;transform:translateY(1px)}.control-group-layers .layer-earth-skin{margin-bottom:8px}.control-group-layers .layer-earth-skin select{width:100%}.control-group-layers .layer-checkboxes{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:6px 10px;margin-top:0}.control-group-layers .layer-checkboxes>label{min-width:0}.control-group-layers .layer-checkboxes>label.layer-check-full{grid-column:1/-1}.control-group-layers .layer-check-meridian-row{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;min-width:0}.control-group-layers .layer-check-meridian-cb{min-width:0}.meridian-count-wrap{display:flex;align-items:center;gap:6px;margin-bottom:0;font-size:.75rem;color:var(--text-muted)}#coriolisMotionDirWrap[hidden],#meridianCountWrap[hidden],#showDateLineWrap[hidden],#showEquatorMountainWrap[hidden],#targetLatWrap[hidden],.meridian-count-wrap[hidden]{display:none!important}.date-line-label{max-width:11em;font-size:.68rem;line-height:1.3;text-align:center;color:#ffe8c8;text-shadow:0 0 8px rgba(0,0,0,.95),0 0 10px rgba(255,180,100,.35)}.date-line-arrow-label{max-width:5em;font-size:.72rem;font-weight:600;color:#fff6d8;pointer-events:none}.date-line-title-label{max-width:none;font-size:.68rem;line-height:1.5;letter-spacing:.1em;writing-mode:vertical-rl;text-orientation:upright;white-space:nowrap;text-align:center;pointer-events:none;transform:none}.meridian-label.date-line-zone-label{display:block;font-family:var(--font-display);font-size:.82rem;font-weight:700;letter-spacing:.08em;line-height:1.45;white-space:normal;text-align:center;pointer-events:none}.date-line-zone-new{color:#ffe8e8;text-shadow:0 0 10px rgba(0,0,0,.95),0 0 12px rgba(220,60,60,.55)}.date-line-zone-old{color:#fff8d8;text-shadow:0 0 10px rgba(0,0,0,.95),0 0 12px rgba(220,180,40,.5)}.date-line-zone-date{display:block;margin-top:2px;font-size:.78rem;font-weight:600;letter-spacing:.04em}.date-line-zone-pct{display:block;margin-top:3px;font-size:.72rem;font-weight:600;letter-spacing:.02em;opacity:.92}.control-group-layers .layer-coriolis-motion-row{margin-bottom:8px;grid-template-columns:auto 1fr}.control-group-layers .layer-checkboxes input[type=checkbox]{flex-shrink:0;margin-top:2px}.sm-layer-checkboxes>label{display:flex;align-items:flex-start;gap:5px;min-width:0;font-size:.72rem;line-height:1.32;color:var(--text-muted)}.sm-layer-checkboxes>label input[type=checkbox]{margin-top:1px}.meridian-count-label{white-space:nowrap;font-size:.75rem;color:var(--text-muted)}.panel-body button:not(.date-picker-btn):not(.lat-hemisphere-btn),.panel-body input[type=range]:not(.target-lat-range),.panel-body select:not(.panel-select):not(.panel-select-inline):not(.panel-select-compact){width:100%}.panel-body button:not(.ref-point-add-btn):not(.ref-point-settings-btn):not(.ref-point-delete-btn):not(
.copyright-text-btn
):not(.play-pause-btn):not(.collapsible-head-btn):not(.date-picker-btn):not(.lat-hemisphere-btn):not(
.preset-season-btn
){padding:5px 7px;font-size:.75rem;line-height:1.25;font-family:var(--font-body);border:1px solid var(--border);border-radius:5px;background:rgba(0,30,50,.5);color:var(--text);cursor:pointer;transition:.2s}.panel-body button:not(.ref-point-add-btn):not(.ref-point-settings-btn):not(.ref-point-delete-btn):not(
.copyright-text-btn
):not(.play-pause-btn):not(.collapsible-head-btn):not(.date-picker-btn):not(.lat-hemisphere-btn):not(
.preset-season-btn
):hover{border-color:var(--accent-warm);color:var(--accent-warm);background:rgba(255,107,53,.12)}input[type=range]{height:4px;-webkit-appearance:none;appearance:none;background:rgba(0,212,255,.2);border-radius:2px;outline:0}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);cursor:pointer}.panel-range-full,.slider-row input[type=range],.target-lat-row-wrap input[type=range]{width:100%;min-width:0}.panel-body .row,.panel-body .row-views-three,.panel-body .season-presets{align-items:start}.panel-body .preset-season-btn{width:100%;padding:5px 6px;font-size:.75rem;line-height:1.25;font-family:var(--font-body);border:1px solid var(--border);border-radius:5px;background:rgba(0,30,50,.5);color:var(--text);cursor:pointer;transition:.2s}.panel-body .preset-season-btn:not(.preset-season-active):hover{border-color:rgba(255,107,53,.65);color:var(--accent-warm);background:rgba(255,107,53,.1)}.panel-body .preset-season-btn.preset-season-active,.panel-body .preset-season-btn.preset-season-active:active,.panel-body .preset-season-btn.preset-season-active:focus,.panel-body .preset-season-btn.preset-season-active:focus-visible,.panel-body .preset-season-btn.preset-season-active:hover{border-color:var(--accent-warm);color:var(--accent-warm);background:rgba(255,107,53,.18);box-shadow:0 0 12px rgba(255,107,53,.28);font-weight:600}.panel-body .play-pause-btn{width:28px;height:28px;padding:0;font-size:13px;display:flex;align-items:center;justify-content:center;flex-shrink:0;border:1px solid var(--border);border-radius:6px;background:rgba(0,40,70,.5);color:var(--text)}.panel-body .play-pause-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(0,212,255,.1)}.row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.row-views-three{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px}.row-views-three button{width:100%;padding:3px 4px;font-size:.7rem;line-height:1.22}.control-group-layers .target-lat-row-wrap{margin-bottom:8px}.season-presets{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:8px}.knowledge-box,.stage-panel-card{border:1px solid var(--border);border-radius:8px;background:rgba(5,15,28,.88);backdrop-filter:blur(8px);box-shadow:var(--glow)}.info-card{margin-top:0;padding:0;border:none;border-radius:0;background:0 0}.stage-live-data.info-card{margin-top:0;width:min(92vw,226px);min-width:min(92vw,226px);box-sizing:border-box}.stage-live-data.info-card.is-noon-mode{width:min(92vw,270px);min-width:min(92vw,270px)}.info-card h2{margin:0 0 8px;font-family:var(--font-display);font-size:.85rem;letter-spacing:.08em;color:var(--accent)}.info-card li,.info-card p{margin:0;font-size:.8rem;line-height:1.65;color:var(--text-muted);font-family:var(--font-body)}.info-card ul{margin:0;padding-left:18px}.stage-live-data .collapsible-content li span{font-family:var(--font-display);font-size:.75rem;letter-spacing:.04em;color:var(--accent)}.ref-point-times-wrap{list-style:none;margin-top:6px;padding-top:4px}.ref-point-times-label{font-family:var(--font-display);font-size:.62rem;letter-spacing:.12em;font-weight:600;color:var(--accent);margin-bottom:6px}.ref-point-times-nested{margin:0;padding-left:16px;list-style:disc}.ref-point-times-nested li{font-size:.78rem;line-height:1.55;color:var(--text-muted)}main.stage-wrap{min-width:0;min-height:0}.stage-wrap{position:relative;min-height:0;height:100%;align-self:stretch;display:flex;flex-direction:column;font-family:var(--font-body);background:#030712;overflow:hidden}.stage-cosmic-bg{z-index:0;pointer-events:none;position:absolute;inset:0;background:radial-gradient(ellipse 80% 50% at 20% -10%,#0e749038,transparent 55%),radial-gradient(ellipse 60% 40% at 90% 10%,#f59e0b14,transparent 50%),radial-gradient(ellipse 50% 60% at 50% 100%,#0f325066,transparent 60%),#030712}.cosmic-backdrop{z-index:0;pointer-events:none;--parallax-x:0px;--parallax-y:0px;position:absolute;inset:0;overflow:hidden}.cosmic-backdrop-stars{position:absolute;inset:0}.cosmic-backdrop-stars canvas{pointer-events:none;width:100%;height:100%;display:block}.cosmic-backdrop .hero-galaxy-photo,.cosmic-backdrop .hero-nebula-photo{position:absolute}.hero-galaxy-photo,.hero-nebula-photo{position:absolute;pointer-events:none;z-index:1;border-radius:50%;overflow:hidden;opacity:.28;filter:saturate(1.2) blur(1px);transform:translate3d(var(--parallax-x),var(--parallax-y),0);transition:transform .15s linear}.hero-nebula-photo{width:min(52vw,560px);aspect-ratio:1;left:-8%;top:8%;animation:28s ease-in-out infinite alternate nebulaDrift;-webkit-mask-image:radial-gradient(circle,#000 35%,transparent 72%);mask-image:radial-gradient(circle,#000 35%,transparent 72%)}.hero-galaxy-photo{width:min(42vw,440px);aspect-ratio:1;right:-6%;bottom:18%;opacity:.22;animation:36s ease-in-out infinite alternate-reverse nebulaDrift;-webkit-mask-image:radial-gradient(circle,#000 40%,transparent 75%);mask-image:radial-gradient(circle,#000 40%,transparent 75%)}.hero-galaxy-photo img,.hero-nebula-photo img{width:100%;height:100%;object-fit:cover;display:block}@keyframes nebulaDrift{from{transform:translate3d(calc(var(--parallax-x) - 12px),calc(var(--parallax-y) + 8px),0) scale(1)}to{transform:translate3d(calc(var(--parallax-x) + 18px),calc(var(--parallax-y) - 14px),0) scale(1.08)}}@media (prefers-reduced-motion:reduce){.hero-galaxy-photo,.hero-nebula-photo{animation:none}}.stage-noise-overlay{z-index:1;pointer-events:none;opacity:.035;position:absolute;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}#stage{flex:1 1 auto;min-height:200px;width:100%;position:relative;z-index:2;background:0 0}#stage canvas{display:block;width:100%;height:100%}.stage-wrap.is-svg-mode #stage>canvas.earth-stage-canvas{display:none!important;visibility:hidden!important;opacity:0!important;pointer-events:none!important}.stage-tool-btn{position:fixed;top:14px;z-index:20;font-family:var(--font-body);letter-spacing:.04em;color:var(--text-muted);background:rgba(5,15,28,.88);border:1px solid var(--border);border-radius:6px;backdrop-filter:blur(8px);cursor:pointer;transition:background .2s,border-color .2s,color .2s,box-shadow .2s}.stage-tool-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(0,212,255,.12);box-shadow:0 0 12px rgba(0,212,255,.15)}.stage-tool-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.stage-reset-btn{right:126px;display:none;align-items:center;justify-content:center;width:40px;height:36px;padding:0;font-size:20px;line-height:1}.stage-fullscreen-btn{right:16px;display:inline-flex;align-items:center;justify-content:center;min-width:96px;padding:6px 12px;font-size:.72rem}.meridian-labels{position:absolute;inset:0;pointer-events:none;z-index:2}.meridian-label{position:absolute;transform:translate(-50%,-50%);font-family:var(--font-body);font-size:.72rem;font-weight:500;color:var(--text);letter-spacing:.02em;text-shadow:0 0 8px rgba(0,0,0,.95),0 1px 3px rgba(0,0,0,.85);white-space:nowrap;pointer-events:none}.local-time-hour-label{font-family:var(--font-display);font-size:.7rem;font-weight:600;letter-spacing:.06em;color:#ffd966;text-shadow:0 0 8px rgba(0,0,0,.95),0 0 10px rgba(255,200,60,.35)}.cardinal-label{font-family:var(--font-display);font-size:.8rem;font-weight:700;letter-spacing:.1em;color:#fff6c8;text-shadow:0 0 8px #000,0 0 12px rgba(255,220,120,.4)}.polaris-label{font-family:var(--font-display);font-size:.75rem;font-weight:700;letter-spacing:.08em;color:#ffe98a;white-space:nowrap;text-shadow:0 0 8px #000,0 0 12px rgba(255,200,80,.55)}.equator-mountain-label{font-family:var(--font-body);font-size:.75rem;font-weight:600;color:var(--accent-warm);white-space:nowrap;text-shadow:0 0 8px #000,0 0 10px rgba(255,107,53,.45);pointer-events:none}.stage-corner-stack{position:fixed;right:16px;bottom:12px;z-index:20;display:flex;flex-direction:column;align-items:stretch;gap:8px;max-width:min(92vw,400px);pointer-events:auto}.stage-live-data .collapsible-content ul{margin:0;padding-left:18px}.stage-text-stack{position:absolute;left:16px;top:14px;max-width:min(70vw,860px);z-index:3;display:flex;flex-direction:column;gap:10px;pointer-events:auto}.collapsible-box{max-width:100%;padding:10px 12px}.collapsible-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.collapsible-box:not(.collapsed) .collapsible-head{margin-bottom:8px;padding-bottom:8px;border-bottom:1px solid var(--border)}.collapsible-head-title{font-family:var(--font-display);font-size:.62rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--accent)}.collapsible-head-btn{flex-shrink:0;width:28px;height:28px;padding:0;font-size:11px;line-height:1;font-family:inherit;color:var(--text-muted);cursor:pointer;border-radius:6px;border:1px solid var(--border);background:rgba(0,40,70,.5);transition:background .2s,border-color .2s,color .2s}.collapsible-head-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(0,212,255,.1)}.collapsible-head-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.collapsible-box.collapsed .collapsible-content{display:none}.collapsible-box.collapsed .collapsible-head{margin-bottom:0;padding-bottom:0;border-bottom:none}.knowledge-explain-panel{max-height:min(42vh,320px)}.knowledge-explain-panel .collapsible-content{max-height:min(38vh,280px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--accent-dim) transparent}.knowledge-explain-body{margin:0;font-size:.8rem;line-height:1.75;color:var(--text);font-family:var(--font-body);white-space:pre-line}.layer-check-ref-header{display:flex;align-items:flex-start;justify-content:space-between;gap:6px;min-width:0}.ref-point-block{grid-column:1/-1}.preset-cities-block{margin-top:8px}.preset-cities-title{font-family:var(--font-display);font-size:.62rem;letter-spacing:.12em;font-weight:600;color:var(--accent);margin:0 0 6px;opacity:.9}.preset-cities-checkboxes{display:grid;grid-template-columns:1fr 1fr;gap:6px 12px}.preset-cities-checkboxes>label{margin:0}.preset-cities-checkboxes input[type=checkbox]{width:auto;margin:0 6px 0 0;transform:translateY(1px)}.preset-cities-checkboxes>label input[type=checkbox]{margin-right:0}.ref-point-check-label{flex:1;min-width:0}.ref-point-add-btn{flex-shrink:0;width:28px;height:28px;padding:0;font-size:18px;line-height:1;font-weight:600;color:var(--text);cursor:pointer;border-radius:6px;border:1px solid var(--border);background:rgba(0,40,70,.5);transition:background .2s,border-color .2s,color .2s}.ref-point-add-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(0,212,255,.1)}.ref-point-list{margin-top:8px;display:flex;flex-direction:column;gap:6px}.ref-point-list-item{display:flex;align-items:center;justify-content:space-between;gap:6px;padding:6px 8px;border-radius:6px;background:rgba(0,20,40,.5);border:1px solid var(--border);font-size:.75rem;min-width:0}.ref-point-list-name{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}.ref-point-list-actions{display:flex;align-items:center;gap:4px;flex:0 0 auto}.ref-point-list-actions button{width:auto}.ref-point-settings-btn{flex:0 0 auto;padding:3px 8px;font-size:.72rem;cursor:pointer;border-radius:6px;border:1px solid var(--border);background:rgba(0,40,70,.5);color:var(--text);white-space:nowrap}.ref-point-settings-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(0,212,255,.1)}.ref-point-delete-btn{flex:0 0 auto;box-sizing:border-box;width:28px;height:28px;padding:0;font-size:18px;line-height:1;font-weight:600;cursor:pointer;border-radius:6px;border:1px solid #6a3030;background:#2a1212;color:#faa}.ref-point-delete-btn:hover{background:#3d1a1a;border-color:#8a4040}.ref-point-label{font-family:var(--font-body);font-size:.72rem;font-weight:600;color:#7affc8;text-shadow:0 0 8px rgba(0,0,0,.95),0 0 10px rgba(0,229,160,.35)}.movement-controls{display:flex;flex-direction:column;align-items:center;gap:6px}.movement-row{display:flex;gap:6px}.movement-controls button{width:40px;height:40px;padding:0;font-size:18px;display:flex;align-items:center;justify-content:center}.copyright-entry{flex-shrink:0;margin-top:auto;padding:10px 12px 12px;border-top:1px solid rgba(0,212,255,.35);background:linear-gradient(180deg,rgba(0,212,255,.06) 0,rgba(0,50,90,.28) 100%);box-shadow:inset 0 1px 0 rgba(0,212,255,.12)}.app.panel-collapsed .copyright-entry{display:none}.copyright-text-btn{display:block;width:100%;padding:10px 14px;font-size:.82rem;font-family:var(--font-body);font-weight:600;letter-spacing:.1em;color:#e8fcff;background:linear-gradient(135deg,rgba(0,212,255,.22) 0,rgba(0,100,170,.32) 55%,rgba(0,60,110,.38) 100%);border:1px solid rgba(0,212,255,.5);border-radius:8px;cursor:pointer;text-align:center;text-shadow:0 0 14px rgba(0,212,255,.45);box-shadow:0 0 18px rgba(0,212,255,.15),inset 0 1px 0 rgba(255,255,255,.1);transition:background .2s,border-color .2s,color .2s,box-shadow .2s,transform .15s}.copyright-text-btn:hover{color:#fff;border-color:var(--accent);background:linear-gradient(135deg,rgba(0,212,255,.35) 0,rgba(0,120,190,.42) 100%);box-shadow:0 0 28px rgba(0,212,255,.28),inset 0 1px 0 rgba(255,255,255,.14)}.copyright-text-btn:active{transform:scale(.98)}.copyright-text-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.copyright-modal{max-width:440px}.copyright-modal .modal-title{text-align:center}.copyright-modal .modal-actions{justify-content:center}.copyright-qr-grid{display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:14px 16px;margin-bottom:14px}.copyright-qr-item{margin:0;flex:1 1 150px;max-width:200px;min-width:0;text-align:center}.copyright-qr-caption{margin:8px 0 0;font-size:.75rem;line-height:1.35;color:var(--text-muted)}.copyright-qr-image{display:block;width:100%;max-width:200px;height:auto;margin:0 auto;border-radius:8px;border:1px solid var(--border)}.copyright-note{margin:0;font-size:.8rem;line-height:1.55;color:var(--text);text-align:center;font-family:var(--font-body)}.modal-overlay{position:fixed;inset:0;z-index:20000;display:flex;align-items:center;justify-content:center;padding:16px;background:rgba(0,0,0,.55);box-sizing:border-box;font-family:var(--font-body)}.modal-overlay[hidden]{display:none!important}.modal-dialog{width:100%;max-width:380px;padding:18px 16px;border-radius:8px;background:rgba(8,18,32,.98);border:1px solid var(--border);box-shadow:0 12px 40px rgba(0,0,0,.55);color:var(--text)}.modal-title{margin:0 0 14px;font-size:1rem;font-weight:600;font-family:var(--font-display);letter-spacing:.06em;color:var(--accent)}.modal-field{margin-bottom:12px}.modal-field label{display:block;margin-bottom:6px;font-size:.75rem;color:var(--text-muted)}.modal-input{width:100%;padding:8px 10px;border-radius:6px;border:1px solid var(--border);background:rgba(0,40,70,.5);color:var(--text);font-size:.84rem;font-family:var(--font-body);box-sizing:border-box;outline:0;transition:border-color .2s,box-shadow .2s}.modal-input:focus{border-color:var(--accent);box-shadow:0 0 12px rgba(0,212,255,.15)}.modal-field input[type=range]{width:100%}.modal-range-val{font-family:var(--font-display);font-size:.7rem;color:var(--accent);font-weight:600}.modal-actions{display:flex;gap:10px;margin-top:18px;justify-content:flex-end}.modal-btn{padding:8px 18px;font-size:.84rem;border-radius:8px;cursor:pointer;border:1px solid var(--border);background:rgba(0,40,70,.6);color:var(--text);font-family:inherit;transition:background .2s,border-color .2s,color .2s}.modal-btn:hover{border-color:var(--accent);background:rgba(0,212,255,.12)}.modal-btn-primary{border-color:var(--accent);color:var(--accent)}.stage-movement-controls{position:fixed;right:16px;top:58px;z-index:20;padding:8px;border:1px solid var(--border);border-radius:8px;background:rgba(5,15,28,.88);backdrop-filter:blur(8px);box-shadow:var(--glow)}.stage-movement-controls .movement-controls{display:flex;flex-direction:column;gap:4px;align-items:center}.stage-movement-controls .movement-controls .movement-row{display:flex;gap:4px}.stage-movement-controls .movement-controls button{width:32px;height:32px;padding:0;font-size:14px;font-family:var(--font-body);color:var(--text-muted);background:rgba(0,40,70,.5);border:1px solid var(--border);border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s,border-color .2s,color .2s}.stage-movement-controls .movement-controls button:hover{border-color:var(--accent);color:var(--accent);background:rgba(0,212,255,.1)}@media (max-width:1000px){.app{grid-template-columns:1fr;grid-template-rows:auto 1fr}.panel-column{width:100%;max-width:none}.app.panel-collapsed .panel-column{width:100%;max-height:0;overflow:visible}.panel{max-height:48vh;border-right:none;border-bottom:1px solid var(--border)}.app.panel-collapsed .panel{max-height:0;opacity:0}.panel-toggle-btn{left:auto;right:12px;top:auto;bottom:12px;transform:none;border-radius:8px;border-left:1px solid var(--border);width:36px;height:36px}.solar-motion-demo{padding:44px 8px 8px}}@media (max-width:600px){.solar-motion-demo{padding:40px 4px 4px}}.slider-row-spaced{margin-top:8px}.layer-check-single{display:flex;align-items:flex-start;gap:6px;margin:0;font-size:.75rem;line-height:1.35;color:var(--text-muted);font-family:var(--font-body)}.layer-check-single input[type=checkbox]{flex-shrink:0;margin-top:2px}.knowledge-explain-panel .collapsible-head{justify-content:flex-start}.knowledge-button-area{display:inline-flex;gap:10px}#formulaRow[hidden],#smDayStatusRow[hidden],#smLiveAltRow[hidden],#smLiveAzimuthRow[hidden],#smLiveLocalTimeRow[hidden],#sunriseAzimuthRow[hidden],#sunsetAzimuthRow[hidden]{display:none!important}.panel-body .play-pause-btn.playing{border-color:var(--accent-warm);color:var(--accent-warm);background:rgba(255,107,53,.12)}.sm-slider-row{margin-top:4px}.sm-speed-row{grid-template-columns:auto auto minmax(0,1fr) auto}.sm-speed-row .play-pause-btn{margin-right:2px}.sm-time-display{min-width:3.2em;font-size:.75rem;letter-spacing:.06em}.image-modal{width:auto;max-width:90vw;max-height:90vh}.image-modal-actions{justify-content:flex-end;margin-bottom:10px}.image-modal-img{max-width:100%;max-height:calc(90vh - 60px);display:block;margin:0 auto}.shadow-demo{position:absolute;inset:0;z-index:4;display:flex;flex-direction:column;justify-content:flex-start;align-items:center;gap:10px;padding:70px 20px 18px;background:0 0;color:var(--text)}.shadow-demo-canvas-wrap{width:min(100%,980px);flex:1 1 auto;min-height:250px;display:flex;align-items:center;transform:translate(-24px,34px)}.shadow-demo-svg{width:100%;height:100%}.shadow-ground-line{stroke:#f5f8ff;stroke-width:10;stroke-linecap:round}.shadow-ray-line{stroke:#f30000;stroke-width:6;stroke-linecap:round}.shadow-shadow-line{stroke:#2f83ff;stroke-width:6;stroke-linecap:round}.shadow-stick-line{stroke:#10cf23;stroke-width:14;stroke-linecap:round}.shadow-angle-arc{fill:none;stroke:#e6ecff;stroke-width:3}.shadow-brace-line{fill:none;stroke:#d5defb;stroke-width:3}.shadow-sun-body{fill:#ffcf22;stroke:#ffb400;stroke-width:3}.shadow-var-label{fill:#f6f9ff;font-size:54px;font-style:italic;font-family:"Times New Roman",serif;text-anchor:middle}.shadow-point-label{fill:#f6f9ff;font-size:22px;text-anchor:middle}.shadow-formula-text{fill:#d8e3ff;font-size:24px;font-family:var(--font-body)}.shadow-direction-label{fill:#f4f8ff;font-size:34px;font-weight:700;font-family:var(--font-body)}.solar-motion-demo{position:absolute;inset:0;z-index:4;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:48px 16px 16px;background:0 0}.solar-motion-svg{width:100%;height:100%;max-width:min(100%,900px);max-height:calc(100vh - 80px);flex:1 1 auto}.solar-motion-svg.dragging{cursor:grabbing}.solar-motion-svg.can-drag{cursor:grab}