:root{
  --bg:#03040a; --ink:#e9eeff; --dim:#a6b1d4; --gold:#ffcf7a;
  --acc:#7aa2ff; --acc2:#c08bff; --success:#67d99a; --warning:#ffad66;
  --line:rgba(140,165,230,.18); --line-strong:rgba(140,165,230,.32);
  --panel:rgba(8,11,24,.72);
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
[hidden]{display:none!important;}
html,body{height:100%;background:var(--bg);color:var(--ink);overflow:hidden;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;}
button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--gold);outline-offset:3px;}
button:disabled{opacity:.45;cursor:not-allowed;}
#cv{position:fixed;inset:0;display:block;touch-action:none;}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;
  overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important;}

/* 地球洲级探索 */
#continentLayer{position:fixed;inset:0;z-index:8;pointer-events:none;}
.continent-chip{position:absolute;left:0;top:0;transform:translate(-50%,-50%);
  display:flex;align-items:center;gap:6px;border:1px solid rgba(140,165,230,.24);
  background:rgba(8,11,24,.68);color:#dce6ff;border-radius:999px;padding:6px 10px;
  font-size:12px;font-weight:700;letter-spacing:0;white-space:nowrap;cursor:pointer;
  backdrop-filter:blur(10px);box-shadow:0 8px 24px rgba(0,0,0,.28),0 0 16px rgba(122,162,255,.08);
  opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease,border-color .18s,background .18s;}
.continent-chip.show{opacity:1;pointer-events:auto;}
.continent-chip:hover{border-color:rgba(255,207,122,.58);background:rgba(30,36,58,.82);transform:translate(-50%,-50%) scale(1.05);}
.continent-chip.on{color:#fff;border-color:rgba(255,207,122,.72);background:rgba(255,207,122,.18);
  box-shadow:0 8px 28px rgba(0,0,0,.32),0 0 18px rgba(255,207,122,.22);}
.continent-chip .mark{width:8px;height:8px;border-radius:50%;background:var(--gold);box-shadow:0 0 10px rgba(255,207,122,.8);}
.continent-chip.far{opacity:.28;pointer-events:none;}

/* 顶部标题 */
#top{position:fixed;top:0;left:0;right:0;z-index:8;padding:16px 20px;pointer-events:none;
  background:linear-gradient(180deg,rgba(3,4,10,.7),transparent);}
#top .t{font-weight:800;letter-spacing:1px;font-size:16px;
  background:linear-gradient(90deg,#bcd4ff,#c08bff);-webkit-background-clip:text;background-clip:text;color:transparent;}
#top .s{font-size:12px;color:var(--dim);margin-top:2px;}

/* 加载 */
#load{position:fixed;inset:0;z-index:30;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:var(--bg);transition:opacity .8s;}
#load .ring{width:54px;height:54px;border:3px solid rgba(122,162,255,.2);border-top-color:var(--acc);
  border-radius:50%;animation:spin 1s linear infinite;}
#load .tx{margin-top:18px;color:var(--dim);font-size:13px;letter-spacing:2px;}
@keyframes spin{to{transform:rotate(360deg)}}

/* 右侧数据面板 */
#hud{position:fixed;top:64px;right:16px;z-index:9;width:248px;max-width:calc(100vw - 32px);
  background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px 16px 14px;
  backdrop-filter:blur(14px);transition:opacity .4s;}
#hud .scale-name{font-size:18px;font-weight:800;color:#eaf0ff;display:flex;align-items:center;gap:8px;}
#hud .scale-name .em{font-size:20px;}
#hud .scale-en{font-size:11px;color:var(--acc2);letter-spacing:2px;text-transform:uppercase;margin-top:2px;}
#hud .dist{margin-top:12px;font-size:13px;color:var(--dim);}
#hud .dist b{color:var(--gold);font-size:17px;font-variant-numeric:tabular-nums;}
#hud .desc{margin-top:10px;font-size:12.5px;line-height:1.7;color:#b9c4e6;}
#hud .facts{margin-top:12px;display:flex;flex-direction:column;gap:7px;}
#hud .f{display:flex;justify-content:space-between;gap:8px;font-size:12px;
  padding:7px 10px;border-radius:9px;background:rgba(122,162,255,.07);border:1px solid var(--line);}
#hud .f .k{color:var(--dim);}
#hud .f .v{color:#eaf0ff;font-weight:600;text-align:right;font-variant-numeric:tabular-nums;}
#hud .tip{margin-top:4px;font-size:12px;line-height:1.65;color:#ffe6b0;
  padding:9px 11px;border-radius:10px;background:rgba(255,196,90,.10);
  border:1px solid rgba(255,196,90,.28);opacity:0;transform:translateY(5px);
  transition:opacity .45s ease,transform .45s ease;}
#hud .tip.show{opacity:1;transform:translateY(0);}
#hud .tip .tipk{display:block;font-weight:700;color:#ffcf7a;margin-bottom:3px;font-size:11.5px;letter-spacing:.3px;}
#hud .tip .tiptext{display:block;min-height:3.3em;transition:opacity .18s ease;}
#hud .tip.swap .tiptext{opacity:.25;}
#hud .tipdots{display:flex;gap:4px;margin-top:7px;}
#hud .tipdot{width:4px;height:4px;border-radius:50%;background:rgba(255,207,122,.32);transition:.18s;}
#hud .tipdot.on{width:12px;border-radius:999px;background:rgba(255,207,122,.85);}
#hud .learn-note{font-size:12px;line-height:1.6;color:#dce6ff;padding:9px 10px;border-radius:9px;
  background:rgba(122,162,255,.08);border:1px solid rgba(140,165,230,.18);}
#hud .learn-note b{display:block;color:#9fc1ff;font-size:11px;margin-bottom:2px;letter-spacing:.3px;}
#hud .parent-note{font-size:12px;line-height:1.65;color:#e9d8ff;padding:9px 10px;border-radius:9px;
  background:rgba(192,139,255,.10);border:1px solid rgba(192,139,255,.24);}
#hud .parent-note b{display:block;color:#dcb8ff;font-size:11px;margin-bottom:2px;letter-spacing:.3px;}
#hud .parent-note .parent-extra{display:block;margin-top:6px;color:#b9c4e6;}
#hud .parent-note .parent-extra em{font-style:normal;color:#ffcf7a;}
#hud .source-note{grid-column:1/-1;font-size:11px;line-height:1.55;color:#9eabd2;padding:8px 10px;border-radius:9px;
  background:rgba(255,255,255,.035);border:1px solid rgba(140,165,230,.16);}
#hud .source-note b{display:block;color:#ffcf7a;font-size:10px;margin-bottom:3px;letter-spacing:.3px;}
#hud .source-note a{color:#bfd0ff;text-decoration:none;border-bottom:1px solid rgba(191,208,255,.35);}

/* 左下 尺度梯 */
#ladder{position:fixed;left:16px;bottom:96px;z-index:9;display:flex;flex-direction:column-reverse;gap:6px;
  transition:opacity .18s ease,transform .18s ease;}
#ladder button{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);
  color:var(--dim);padding:7px 12px 7px 10px;border-radius:999px;font-size:12px;cursor:pointer;
  backdrop-filter:blur(10px);transition:.2s;white-space:nowrap;}
#ladder button .dot{width:8px;height:8px;border-radius:50%;background:rgba(122,162,255,.4);flex-shrink:0;transition:.2s;}
#ladder button.on{color:#fff;border-color:rgba(122,162,255,.6);background:rgba(122,162,255,.18);}
#ladder button.on .dot{background:var(--gold);box-shadow:0 0 10px var(--gold);}

/* 底部缩放滑轨 */
#dock{position:fixed;left:0;right:0;bottom:0;z-index:9;padding:14px 18px 18px;
  background:linear-gradient(0deg,rgba(3,4,10,.85),transparent);}
#dock .row{max-width:760px;margin:0 auto;display:flex;align-items:center;gap:14px;}
#dock .lab{font-size:11px;color:var(--dim);width:60px;flex-shrink:0;text-align:center;line-height:1.3;}
#zoom{flex:1;-webkit-appearance:none;appearance:none;height:5px;border-radius:5px;outline:none;
  background:linear-gradient(90deg,#6ea8ff,#c08bff,#ffcf7a);}
#zoom::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;
  background:#fff;cursor:pointer;box-shadow:0 0 14px rgba(160,190,255,.9);border:2px solid #7aa2ff;}
#zoom::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:#fff;cursor:pointer;border:2px solid #7aa2ff;}
#dock .hint{max-width:760px;margin:8px auto 0;text-align:center;font-size:11px;color:#6b78a0;}

/* 控制按钮 */
#ctrls{position:fixed;top:66px;left:16px;z-index:12;display:flex;gap:6px;align-items:center;}
#ctrls button{background:var(--panel);border:1px solid var(--line);color:var(--dim);
  height:38px;border-radius:8px;cursor:pointer;font-size:13px;line-height:1;backdrop-filter:blur(10px);transition:.2s;
  display:inline-flex;align-items:center;justify-content:center;padding:0 13px;font-weight:650;white-space:nowrap!important;
  word-break:normal;writing-mode:horizontal-tb;text-orientation:mixed;overflow:hidden;flex:0 0 auto;}
#ctrls button.tool-action{min-width:64px;}
#ctrls button.tool-mode{min-width:72px;}
#ctrls button.on{color:var(--gold);border-color:rgba(255,207,122,.5);}
#ctrls button:hover{color:#fff;}
#moreMenu{position:fixed;left:16px;top:112px;z-index:13;display:none;width:180px;padding:7px;
  border:1px solid var(--line-strong);border-radius:10px;background:rgba(8,11,24,.94);backdrop-filter:blur(14px);
  box-shadow:0 16px 44px rgba(0,0,0,.42);}
#moreMenu.show{display:grid;gap:4px;}
#moreMenu button{height:36px;border:0;border-radius:7px;background:transparent;color:#cbd6f8;
  text-align:left;padding:0 10px;font-size:13px;cursor:pointer;}
#moreMenu button:hover,#moreMenu button:focus-visible{background:rgba(122,162,255,.12);color:#fff;}
#moreMenu button.on,#moreMenu button.menu-primary.on{color:var(--gold);background:rgba(255,207,122,.08);}
#moreMenu button.menu-control{color:#cbd6f8;}
#moreMenu button.menu-experimental{color:#ffd1a7;}
#moreMenu .menu-divider{height:1px;background:var(--line);margin:3px 5px;}
#entry{position:fixed;inset:0;z-index:26;display:none;align-items:center;justify-content:center;
  background:radial-gradient(circle at 50% 38%,rgba(28,42,82,.24),rgba(3,4,10,.78) 58%,rgba(3,4,10,.94));
  backdrop-filter:blur(3px);padding:24px;}
#entry.show{display:flex;}
#entry .box{width:100%;max-width:920px;text-align:center;}
#entry h1{font-size:clamp(30px,5vw,54px);line-height:1.05;color:#fff;font-weight:950;
  text-shadow:0 8px 34px rgba(0,0,0,.5);}
#entry p{margin:12px auto 0;max-width:640px;color:#b9c4e6;font-size:14px;line-height:1.8;}
#entry .entry-meta{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:14px;}
#entry .entry-meta span{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  border:1px solid rgba(140,165,230,.18);background:rgba(122,162,255,.08);color:#d7e0ff;font-size:11px;}
#entry .quickstart{margin:16px auto 0;max-width:760px;text-align:left;border:1px solid rgba(140,165,230,.2);
  background:rgba(8,11,24,.48);border-radius:14px;padding:12px 14px;box-shadow:0 12px 34px rgba(0,0,0,.18);}
#entry .quickstart>b{display:block;color:#ffcf7a;font-size:12px;letter-spacing:.8px;margin-bottom:8px;}
#entry .quickstart ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;list-style:none;}
#entry .quickstart li{display:flex;align-items:flex-start;gap:7px;color:#cbd6f8;font-size:12px;line-height:1.5;}
#entry .quickstart li span{display:inline-flex;align-items:center;justify-content:center;flex:0 0 20px;height:20px;
  border-radius:50%;background:rgba(255,207,122,.16);color:#ffcf7a;font-size:11px;font-weight:900;}
#entry .choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:24px auto 0;width:min(760px,100%);}
#entry .choices button{min-height:150px;text-align:left;border-radius:14px;border:1px solid rgba(140,165,230,.24);
  width:100%;min-width:0;background:linear-gradient(180deg,rgba(255,255,255,.09),rgba(255,255,255,.035));color:#eaf0ff;
  padding:18px;cursor:pointer;box-shadow:0 18px 54px rgba(0,0,0,.32);transition:.2s;}
#entry .choices button:hover{transform:translateY(-2px);border-color:rgba(255,207,122,.55);background:rgba(255,207,122,.10);}
#entry .choices button.recommended{border-color:rgba(255,207,122,.52);background:linear-gradient(180deg,rgba(255,207,122,.16),rgba(122,162,255,.07));}
#entry .tag{display:inline-flex;align-items:center;height:22px;padding:0 8px;margin-bottom:12px;border-radius:999px;
  background:rgba(122,162,255,.14);border:1px solid rgba(140,165,230,.18);color:#bcd0ff;font-size:11px;font-weight:800;}
#entry .tag.warn{color:#ffcf7a;background:rgba(255,207,122,.10);border-color:rgba(255,207,122,.32);}
#entry .choices b{display:block;font-size:20px;color:#fff;margin-bottom:7px;}
#entry .choices span:not(.tag){display:block;font-size:12.5px;color:#b9c4e6;line-height:1.65;}
#entry .entry-actions{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:14px;}
#entry .entry-actions button,#entry .entry-actions a{border:1px solid rgba(140,165,230,.22);background:rgba(8,11,24,.55);color:#cbd6f8;
  min-width:0;border-radius:999px;padding:9px 13px;font-size:12px;cursor:pointer;transition:.18s;text-decoration:none;line-height:1.1;
  white-space:normal;overflow-wrap:anywhere;}
#entry .entry-actions button:hover,#entry .entry-actions a:hover{color:#fff;border-color:rgba(255,207,122,.48);background:rgba(255,207,122,.08);}
#entry .entry-actions .experimental{color:#ffd1a7;border-color:rgba(255,173,102,.34);background:rgba(255,173,102,.08);}
#entry #entryToolsPanel{display:none;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;width:min(760px,100%);
  margin:10px auto 0;padding:12px;border:1px solid var(--line);border-radius:12px;background:rgba(8,11,24,.70);}
#entry #entryToolsPanel.show{display:grid;}
#entry #entryToolsPanel button,#entry #entryToolsPanel a{display:flex;align-items:center;justify-content:center;min-height:36px;
  border:1px solid var(--line);border-radius:8px;background:rgba(122,162,255,.06);color:#cbd6f8;
  font-size:12px;text-decoration:none;cursor:pointer;padding:8px;}
#entry .entry-note{max-width:none;margin-top:10px;font-size:12px;line-height:1.55;color:#9aa7cc;}

#infoPanel{position:fixed;inset:0;z-index:29;display:none;align-items:center;justify-content:center;
  background:rgba(3,4,10,.72);backdrop-filter:blur(8px);padding:22px;}
#infoPanel.show{display:flex;}
#infoPanel .info-card{position:relative;width:min(780px,calc(100vw - 32px));max-height:min(760px,calc(100dvh - 36px));
  overflow:auto;border:1px solid rgba(140,165,230,.24);border-radius:18px;background:rgba(8,11,24,.92);
  box-shadow:0 22px 70px rgba(0,0,0,.48);padding:22px;}
#infoPanel .info-card::-webkit-scrollbar{width:6px;}
#infoPanel .info-card::-webkit-scrollbar-thumb{background:rgba(140,165,230,.28);border-radius:999px;}
#infoPanel .info-close{position:absolute;top:12px;right:12px;width:30px;height:30px;border-radius:50%;
  border:1px solid rgba(140,165,230,.2);background:rgba(255,255,255,.05);color:#aeb9dd;cursor:pointer;font-size:18px;}
#infoPanel .info-close:hover{color:#fff;border-color:rgba(255,207,122,.48);}
#infoPanel .info-kicker{color:#ffcf7a;font-size:11px;font-weight:900;letter-spacing:1.2px;text-transform:uppercase;}
#infoPanel h2{margin-top:6px;padding-right:34px;color:#fff;font-size:24px;line-height:1.25;}
#infoPanel .info-body{margin-top:14px;color:#c9d4f3;font-size:13px;line-height:1.72;}
#infoPanel .info-body p{margin:0 0 12px;}
#infoPanel .info-body h3{margin:16px 0 8px;color:#eef3ff;font-size:15px;}
#infoPanel .info-body ol,#infoPanel .info-body ul{display:grid;gap:8px;margin:0;padding-left:18px;}
#infoPanel .info-body li{padding-left:2px;}
#infoPanel .info-body .lesson{border:1px solid rgba(140,165,230,.16);border-radius:12px;background:rgba(122,162,255,.06);
  padding:11px 12px;margin-top:10px;}
#infoPanel .info-body .lesson b{display:block;color:#fff;font-size:14px;margin-bottom:5px;}
#infoPanel .info-body .lesson span{display:block;color:#aeb9dd;font-size:12px;line-height:1.58;}
#infoPanel .info-body a{color:#bfd0ff;text-decoration:none;border-bottom:1px solid rgba(191,208,255,.34);}

#shareKitPanel{position:fixed;inset:0;z-index:29;display:none;align-items:center;justify-content:center;
  background:rgba(3,4,10,.72);backdrop-filter:blur(8px);padding:22px;}
#shareKitPanel.show{display:flex;}
#shareKitPanel .share-card{position:relative;width:min(820px,calc(100vw - 32px));max-height:min(780px,calc(100dvh - 36px));
  overflow:auto;border:1px solid var(--line-strong);border-radius:14px;background:rgba(8,11,24,.94);
  box-shadow:0 22px 70px rgba(0,0,0,.48);padding:22px;}
#shareKitPanel .share-close{position:absolute;top:12px;right:12px;width:30px;height:30px;border-radius:50%;
  border:1px solid rgba(140,165,230,.2);background:rgba(255,255,255,.05);color:#aeb9dd;cursor:pointer;font-size:18px;}
#shareKitPanel .share-close:hover{color:#fff;border-color:rgba(255,207,122,.48);}
#shareKitPanel .share-kicker{color:#ffcf7a;font-size:11px;font-weight:900;letter-spacing:1.2px;text-transform:uppercase;}
#shareKitPanel h2{margin-top:6px;padding-right:34px;color:#fff;font-size:24px;line-height:1.25;}
#shareKitPanel .share-lead{margin-top:10px;color:#c9d4f3;font-size:13px;line-height:1.7;max-width:660px;}
#shareKitPanel .share-grid{display:grid;grid-template-columns:220px 1fr;gap:14px;margin-top:16px;}
#shareKitPanel .share-qr,#shareKitPanel .share-links,.compat-box{border:1px solid rgba(140,165,230,.18);
  background:rgba(122,162,255,.06);border-radius:14px;padding:14px;}
#shareKitPanel .share-qr{display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px;}
#shareKitPanel .share-qr img{width:150px;height:150px;border-radius:10px;background:#fff;padding:8px;}
#shareKitPanel .share-qr b{color:#fff;font-size:14px;}
#shareKitPanel .share-qr span,#shareKitPanel .share-links label,.compat-box span{color:#9eabd2;font-size:12px;line-height:1.55;}
#shareKitPanel .share-links label{display:block;margin-bottom:7px;}
#shareKitPanel code{display:block;white-space:normal;word-break:break-all;color:#dce6ff;background:rgba(0,0,0,.22);
  border:1px solid rgba(140,165,230,.16);border-radius:10px;padding:10px;font-size:11.5px;line-height:1.55;}
#shareKitPanel .share-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:12px;}
#shareKitPanel .share-actions button,#shareKitPanel .share-actions a{display:flex;align-items:center;justify-content:center;
  min-height:34px;border:1px solid rgba(140,165,230,.22);background:rgba(8,11,24,.58);color:#dbe4ff;
  border-radius:10px;padding:8px 10px;font-size:12px;line-height:1.25;text-align:center;text-decoration:none;cursor:pointer;}
#shareKitPanel .share-actions button:hover,#shareKitPanel .share-actions a:hover{border-color:rgba(255,207,122,.5);color:#fff;background:rgba(255,207,122,.08);}
.compat-box{margin-top:14px;}
.compat-box b{display:block;color:#ffcf7a;font-size:12px;margin-bottom:5px;}

/* 摄像头手势模式 */
#gestureHud{position:fixed;right:16px;top:66px;z-index:10;width:300px;max-width:calc(100vw - 32px);
  background:rgba(8,11,24,.72);border:1px solid var(--line);border-radius:14px;padding:11px 12px;
  backdrop-filter:blur(12px);display:none;}
#gestureHud.show{display:block;}
#gestureHud .gt{display:flex;justify-content:space-between;align-items:center;gap:10px;
  font-size:13px;font-weight:800;color:#eef3ff;}
#gestureHud .gt small{font-size:10.5px;color:var(--gold);font-weight:700;}
#gestureHud .gtools{display:flex;align-items:center;gap:8px;}
#gestureHud .gtools button{height:26px;border:1px solid var(--line);border-radius:7px;background:rgba(255,255,255,.05);
  color:#dce6ff;padding:0 8px;font-size:11px;cursor:pointer;}
#gestureHud[data-state="error"]{border-color:rgba(255,173,102,.52);}
body.gesture-active #hud{display:none;}
#gestureHud .preview{position:relative;margin-top:8px;aspect-ratio:4/3;border-radius:10px;overflow:hidden;
  background:#03040a;border:1px solid rgba(140,165,230,.18);box-shadow:inset 0 0 22px rgba(122,162,255,.08);}
#gestureVideo{width:100%;height:100%;display:block;object-fit:cover;transform:scaleX(-1);opacity:.82;}
#gestureCanvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;}
#gestureHud .gs{margin-top:7px;color:#9da9cf;font-size:11.5px;line-height:1.55;}
#gestureHud .privacy{margin-top:6px;color:#7f8cb3;font-size:10px;line-height:1.45;padding:6px 7px;border-radius:8px;
  background:rgba(95,220,145,.06);border:1px solid rgba(95,220,145,.16);}
#gestureHud .meter{height:5px;border-radius:999px;background:rgba(140,165,230,.14);overflow:hidden;margin-top:8px;}
#gestureHud .meter span{display:block;height:100%;width:0%;background:linear-gradient(90deg,#7aa2ff,#ffcf7a);transition:width .12s;}
#gestureHud .hands{display:flex;gap:5px;margin-top:8px;}
#gestureHud .hand{flex:1;height:6px;border-radius:999px;background:rgba(140,165,230,.16);}
#gestureHud .hand.on{background:rgba(95,220,145,.55);box-shadow:0 0 10px rgba(95,220,145,.24);}
#gestureHud .guide{display:grid;gap:4px;margin-top:8px;}
#gestureHud .guide span{border:1px solid rgba(140,165,230,.13);border-radius:8px;padding:5px 7px;
  background:rgba(122,162,255,.06);color:#c2cae6;font-size:10.5px;line-height:1.38;}
#gestureHud .guide b{color:var(--gold);font-weight:800;}

/* 亲子学习控制 */
#edu{position:fixed;top:112px;left:16px;z-index:9;width:278px;max-width:calc(100vw - 32px);
  background:rgba(8,11,24,.66);border:1px solid var(--line);border-radius:14px;padding:10px;
  backdrop-filter:blur(12px);display:flex;flex-direction:column;gap:8px;}
#edu .modes{display:grid;grid-template-columns:repeat(2,1fr);gap:5px;padding:3px;background:rgba(122,162,255,.08);
  border:1px solid rgba(140,165,230,.14);border-radius:10px;}
#edu button{border:1px solid transparent;background:transparent;color:var(--dim);border-radius:8px;
  height:30px;padding:0 9px;cursor:pointer;font-size:12px;transition:.18s;white-space:nowrap;}
#edu button:hover{color:#fff;border-color:rgba(140,165,230,.26);}
#edu button.on{color:#fff;background:rgba(122,162,255,.22);border-color:rgba(122,162,255,.45);}
#edu .actions{display:flex;gap:6px;}
#edu .actions button{flex:1;}
#edu .actions button{background:rgba(255,255,255,.04);border-color:rgba(140,165,230,.16);}
#edu .caption{min-height:34px;color:#dfe7ff;font-size:12px;line-height:1.55;padding:7px 8px;
  border-radius:9px;background:rgba(122,162,255,.07);border:1px solid rgba(140,165,230,.14);}
#edu .caption:empty{display:none;}
#edu .status{min-height:17px;color:#7d89ad;font-size:11px;line-height:1.45;padding:0 2px;}

#mission{position:fixed;left:16px;bottom:164px;z-index:16;width:278px;max-width:calc(100vw - 32px);
  max-height:min(620px,calc(100dvh - 210px));overflow-y:auto;overscroll-behavior:contain;
  background:rgba(8,11,24,.72);border:1px solid var(--line);border-radius:14px;padding:12px;
  backdrop-filter:blur(12px);display:none;}
#mission.show{display:block;}
#mission::-webkit-scrollbar{width:5px;}
#mission::-webkit-scrollbar-thumb{background:rgba(140,165,230,.25);border-radius:999px;}
#mission .mt{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:13px;
  color:#eef3ff;font-weight:800;}
#mission .mt small{color:var(--gold);font-size:11px;font-weight:700;}
#mission .mq{margin-top:8px;color:#c6d0f0;font-size:12.5px;line-height:1.6;}
#mission .mp{margin-top:8px;display:flex;flex-wrap:wrap;gap:5px;}
#mission .task-list{display:grid;gap:7px;margin-top:10px;}
#mission .task{display:grid;grid-template-columns:18px 1fr;gap:7px;align-items:start;color:#c6d0f0;font-size:12px;
  line-height:1.45;padding:7px 8px;border-radius:9px;background:rgba(255,255,255,.035);
  border:1px solid rgba(140,165,230,.13);}
#mission .task.done{color:#ddffe8;border-color:rgba(95,220,145,.42);background:rgba(95,220,145,.10);}
#mission .task i{font-style:normal;color:#ffcf7a;}
#mission .badge{font-size:10.5px;color:#8c99c0;border:1px solid rgba(140,165,230,.16);
  background:rgba(255,255,255,.035);border-radius:999px;padding:4px 7px;}
#mission .badge.done{color:#ddffe8;border-color:rgba(95,220,145,.45);background:rgba(95,220,145,.12);}
#mission .explain{margin-top:8px;color:#9eabd2;font-size:11.5px;line-height:1.55;display:none;}
#mission .explain.show{display:block;}
#mission .ma{display:grid;grid-template-columns:1fr;gap:6px;margin-top:10px;}
#mission button{border:1px solid rgba(140,165,230,.18);background:rgba(122,162,255,.08);color:#dbe4ff;
  border-radius:9px;padding:8px 10px;text-align:left;cursor:pointer;font-size:12px;line-height:1.35;transition:.18s;}
#mission button:hover{border-color:rgba(122,162,255,.5);background:rgba(122,162,255,.16);}
#mission button.good{border-color:rgba(95,220,145,.6);background:rgba(95,220,145,.16);color:#dfffea;}
#mission button.bad{border-color:rgba(255,118,118,.55);background:rgba(255,118,118,.12);color:#ffdede;}
#mission .close{position:absolute;top:8px;right:8px;width:24px;height:24px;text-align:center;padding:0;
  border-radius:50%;color:#8d98bd;background:transparent;}

#toast{position:fixed;left:50%;bottom:88px;z-index:20;transform:translate(-50%,8px);opacity:0;pointer-events:none;
  background:rgba(8,11,24,.88);border:1px solid rgba(140,165,230,.26);border-radius:999px;
  color:#eaf0ff;padding:9px 14px;font-size:12px;box-shadow:0 10px 32px rgba(0,0,0,.35);
  transition:opacity .22s ease,transform .22s ease;}
#toast.show{opacity:1;transform:translate(-50%,0);}

/* 行星选择条（仅在太阳系尺度显示） */
#planetbar{position:fixed;top:64px;left:50%;transform:translateX(-50%);z-index:9;
  display:none;gap:6px;flex-wrap:wrap;justify-content:center;max-width:92vw;
  background:rgba(10,14,28,.55);backdrop-filter:blur(10px);border:1px solid var(--line);
  border-radius:14px;padding:7px 9px;overflow:visible;}
#planetbar.show{display:flex;}
#planetbar button{background:transparent;border:1px solid transparent;color:var(--dim);
  padding:5px 10px;border-radius:9px;cursor:pointer;font-size:12.5px;transition:.18s;white-space:nowrap;position:relative;
  display:inline-flex;align-items:center;gap:6px;}
#planetbar button:hover{color:#fff;border-color:var(--line);}
#planetbar button.on{color:#fff;background:rgba(122,162,255,.22);border-color:rgba(122,162,255,.6);}
#planetbar button[data-preview]::after{content:attr(data-preview);position:absolute;top:calc(100% + 9px);left:50%;
  transform:translate(-50%,-4px);width:max-content;max-width:min(260px,80vw);white-space:normal;
  text-align:left;padding:8px 10px;border-radius:8px;background:rgba(8,11,24,.94);
  border:1px solid rgba(140,165,230,.26);box-shadow:0 10px 28px rgba(0,0,0,.36);
  color:#dbe4ff;font-size:11.5px;line-height:1.5;opacity:0;pointer-events:none;transition:.18s;z-index:20;}
#planetbar button[data-preview]::before{content:"";position:absolute;top:calc(100% + 4px);left:50%;
  transform:translateX(-50%) rotate(45deg);width:8px;height:8px;background:rgba(8,11,24,.94);
  border-left:1px solid rgba(140,165,230,.26);border-top:1px solid rgba(140,165,230,.26);
  opacity:0;pointer-events:none;transition:.18s;z-index:21;}
#planetbar button[data-preview]:hover::after,#planetbar button[data-preview]:focus-visible::after,
#planetbar button[data-preview]:hover::before,#planetbar button[data-preview]:focus-visible::before{opacity:1;transform:translate(-50%,0);}
#planetbar button[data-preview]:hover::before,#planetbar button[data-preview]:focus-visible::before{transform:translateX(-50%) rotate(45deg);}
#planetbar .sep{width:1px;background:var(--line);margin:2px 2px;}
#planetbar .planet-swatch{width:9px;height:9px;border-radius:50%;flex:0 0 9px;
  background:var(--planet-color,#9fb4e9);box-shadow:inset -2px -2px 3px rgba(0,0,0,.4),0 0 7px color-mix(in srgb,var(--planet-color,#9fb4e9) 55%,transparent);}

@media(max-width:1199px) and (min-width:900px){
  #planetbar{left:calc(50% + 15px);max-width:calc(100vw - 590px);}
}

/* 错误兜底 */
#err{position:fixed;inset:0;z-index:40;display:none;flex-direction:column;align-items:center;justify-content:center;
  background:var(--bg);text-align:center;padding:30px;}
#err .e{font-size:40px;opacity:.5;}
#err .m{margin-top:14px;color:var(--dim);font-size:14px;max-width:460px;line-height:1.8;}
#err .m b{display:block;color:#fff;margin-bottom:5px;font-size:16px;}
#err .m span{display:block;}
#err .err-actions{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:14px;}
#err .err-actions a{border:1px solid rgba(140,165,230,.24);border-radius:999px;padding:8px 12px;color:#dce6ff;
  background:rgba(122,162,255,.08);text-decoration:none;font-size:12px;}
#err .err-actions a:hover{border-color:rgba(255,207,122,.55);color:#fff;}

body.reduced-motion *,body.reduced-motion *::before,body.reduced-motion *::after{
  animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;
  transition-duration:.001ms!important;
}

#desktopOnly{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;flex-direction:column;
  gap:10px;padding:28px;text-align:center;background:#03040a;color:#e9eeff;}
#desktopOnly b{font-size:22px;}
#desktopOnly span{max-width:460px;color:#a6b1d4;font-size:14px;line-height:1.7;}

@media(max-width:899px){
  #desktopOnly{display:flex;}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;
    transition-duration:.001ms!important;}
}