:root{--bg-deep: #050a14;--bg-mid: #0b1a33;--panel: rgba(10, 22, 44, .74);--panel-border: rgba(120, 180, 255, .22);--text: #eaf2ff;--text-dim: #9db4d4;--day: #ffd75e;--dusk: #ff9a4a;--night: #14305c;--accent: #ffc93c;--radius: 16px;--topbar-h: 60px;--timebar-h: 76px;--panel-h: 44px}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:var(--bg-deep);color:var(--text);font-family:PingFang SC,Noto Sans SC,Microsoft YaHei,system-ui,sans-serif;-webkit-font-smoothing:antialiased}#app{display:grid;grid-template-rows:var(--topbar-h) 1fr var(--timebar-h);height:100dvh}#topbar{display:flex;align-items:center;gap:12px;padding:0 16px;background:linear-gradient(180deg,#0a162ceb,#0a162c8c);border-bottom:1px solid rgba(120,180,255,.14);z-index:20}.topbar-left,.topbar-mid,.topbar-right{display:flex;align-items:center;gap:10px}.topbar-mid{flex:1;justify-content:center;color:var(--text-dim);font-size:13px;min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.brand{font-size:15px;font-weight:700;letter-spacing:.5px;color:#cfe4ff}.hud-date{font-variant-numeric:tabular-nums;color:#bcd4f5;font-size:14px}.hud-date-short{display:none}.hud-clock{padding:2px 12px;border-radius:999px;border:1px solid rgba(120,180,255,.24);background:#182e5299;font-variant-numeric:tabular-nums;font-size:19px;font-weight:700;color:#fff;letter-spacing:1px;line-height:1.35;font-family:inherit;appearance:none;cursor:pointer}.hud-clock[aria-pressed=true]{background:#ffc93c2e;border-color:#ffc93c99;color:var(--accent)}.badge{font-size:11px;padding:2px 7px;border-radius:999px;border:1px solid rgba(120,180,255,.4);color:#9ec6ff}.hud-state{padding:2px 8px;border-radius:999px;background:#78b4ff1f;color:#a8c8f0;font-size:12px}.hud-state.is-playing{background:#ffc93c29;color:var(--accent)}.btn{font:inherit;font-size:13px;color:var(--text);background:#78b4ff1a;border:1px solid rgba(120,180,255,.28);border-radius:10px;padding:8px 12px;min-height:36px;cursor:pointer;transition:background .14s ease,border-color .14s ease,transform .1s ease;white-space:nowrap}.btn:hover{background:#78b4ff33}.btn:active{transform:scale(.97)}.btn.is-active,.btn-toggle[aria-pressed=true]{background:#ffc93c2e;border-color:#ffc93c99;color:var(--accent);box-shadow:inset 0 0 0 1px #ffc93c40}#stage{position:relative;overflow:hidden;background:radial-gradient(120% 120% at 50% 0%,var(--bg-mid) 0%,var(--bg-deep) 62%)}#canvas-wrap{position:absolute;inset:0;isolation:isolate;z-index:0}@media(min-width:821px){#canvas-wrap{inset:0 356px 0 0}}#globe{display:block;width:100%;height:100%;touch-action:none;cursor:grab}#globe.is-dragging{cursor:grabbing}.big-clock{position:absolute;top:0;left:50%;transform:translate(-50%);z-index:2;padding:3px 16px 5px;border-radius:0 0 12px 12px;border:1px solid rgba(255,201,60,.38);background:#0b1a33;text-align:center;white-space:nowrap;pointer-events:none}.big-clock[hidden]{display:none}.view-switch{position:absolute;top:12px;right:12px;z-index:3;display:flex;gap:4px;padding:4px;border-radius:12px;background:#0a162cd1;border:1px solid var(--panel-border)}.view-btn{min-height:30px;padding:5px 10px;font-size:12px;border-radius:8px}#btn-lock:disabled{opacity:.45;cursor:not-allowed}body.mode-learn #view-switch{display:none}@media(max-width:820px){.view-switch{flex-direction:column;top:10px;right:10px;gap:3px;padding:3px}.view-btn{min-height:30px;padding:4px 8px;font-size:11.5px}}.big-clock-date{font-size:11px;color:var(--text-dim);letter-spacing:.5px;margin-bottom:1px}.big-clock-time{font-size:48px;line-height:1.05;font-weight:700;letter-spacing:1px;color:#f0c957;font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}@media(min-width:821px){.big-clock{display:flex;align-items:center;gap:12px}.big-clock-date{margin-bottom:0}.big-clock-time{font-size:40px}}.label-layer{position:absolute;inset:0;pointer-events:none;overflow:hidden}.province-label{--label-scale: 1;font-size:clamp(12px,1.22vw,16px);font-weight:800;line-height:1;white-space:nowrap;color:#fff;letter-spacing:.5px;padding:2px 6px;border-radius:6px;background:#060e1e80;border:1px solid rgba(150,190,255,.28);transform-origin:center;text-shadow:0 1px 3px rgba(0,0,0,.95);transition:opacity .18s ease,color .16s ease,background .16s 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rgba(20,80,150,.4)}.sea-label{font-size:clamp(9px,.76vw,10.5px);font-weight:600;letter-spacing:.06em;color:#a5d2f599;text-shadow:0 1px 2px rgba(0,0,0,.85)}.terminator-label{font-size:11px;font-weight:700;letter-spacing:1.5px;white-space:nowrap;padding:2px 8px;border-radius:999px;pointer-events:none;color:#241703;background:#ffd696f2;box-shadow:0 0 12px #ffd08aa6}#panel{position:absolute;top:14px;right:14px;width:340px;max-height:calc(100% - 28px);display:flex;flex-direction:column;gap:8px;overflow-y:auto;padding-right:2px;z-index:10;scrollbar-width:thin}.card{background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius);padding:10px 12px;backdrop-filter:blur(10px);flex:0 0 auto}.card-title{margin:0 0 8px;font-size:13px;font-weight:700;color:#c8dcf7;letter-spacing:.6px;display:flex;align-items:baseline;gap:8px}.card-note{font-size:11px;font-weight:400;color:var(--text-dim)}.card-hint{margin:8px 0 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rgba(120,180,255,.2);border-radius:12px}.spot-list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px}.spot-item{display:flex;align-items:flex-start;gap:8px}.spot-idx{flex:none;width:18px;height:18px;margin-top:1px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:800;color:#0a1628;background:linear-gradient(180deg,#ffe3a3,#ffc93c);box-shadow:0 0 8px #ffc93c47}.spot-body{display:flex;flex-direction:column;gap:1px;min-width:0}.spot-name{font-size:12.5px;font-weight:700;color:#fff;letter-spacing:.2px}.spot-note{font-size:11.5px;line-height:1.55;color:#c7d8f2}.extremes{display:grid;grid-template-columns:1fr 1fr;gap:8px}.extreme{background:#78b4ff12;border-radius:12px;padding:8px 10px;border:1px solid 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#ffc93cb3}.slider-label{font-variant-numeric:tabular-nums;font-size:14px;color:#d6e6ff;min-width:52px;text-align:center}.timebar-info{display:flex;flex-direction:column;justify-content:center;line-height:1.25;padding-right:4px;white-space:nowrap}.tb-date{width:11em;font-size:12px;color:#bcd4f5}.tb-clock{font-variant-numeric:tabular-nums;font-size:15px;font-weight:700;color:#fff}.tb-time{display:inline-block;width:5ch;font-variant-numeric:tabular-nums}.tb-bj{font-style:normal;font-size:10px;font-weight:400;color:#9ec6ff;margin-left:5px;padding:1px 5px;border-radius:999px;border:1px solid rgba(120,180,255,.35)}.timeline-ticks{position:relative;height:13px}.timeline-ticks span{position:absolute;top:0;transform:translate(-50%);font-size:10px;color:var(--text-dim);font-variant-numeric:tabular-nums;white-space:nowrap}.timeline-ticks span:nth-child(1){transform:translate(0)}.timeline-ticks span:nth-child(5){transform:translate(-100%)}.timeline-ticks 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