:root{color-scheme:light}html{touch-action:manipulation;-webkit-text-size-adjust:100%;text-size-adjust:100%}html,body{overscroll-behavior:none}body{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}:root{--ground:#E3EEF0;--ground-2:#F3F9F9;--panel:#FBFDFD;--panel-2:#EDF4F5;--ink:#15304A;--ink-soft:#4E6577;--line:#C3D6DB;--accent:#F2A516;--accent-ink:#3A2600;--accent-soft:#FCE9C0;--good:#23865A;--bad:#C93A33;--warn:#9A6400;--bubble:#FFFFFF;--bubble-a:.62;--merged:#FFF4DA;--merged-a:.85;--rim:#79BFD0;--rim2:#EE93BA;--hi-a:.85;--shadow:0 18px 50px -22px rgba(21,48,74,.45);--display:"Unbounded","Arial Rounded MT Bold","Trebuchet MS",sans-serif;--body:"Nunito","Segoe UI",system-ui,sans-serif}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--ground:#0E2130;--ground-2:#17344A;--panel:#132B3D;--panel-2:#183548;--ink:#E3EEF0;--ink-soft:#9CB2C1;--line:#2A4B60;--accent:#F6B73A;--accent-ink:#2B1B00;--accent-soft:#3F3218;--good:#4CC38A;--bad:#F2716A;--warn:#E8B04A;--bubble:#CDE7EF;--bubble-a:.14;--merged:#F6B73A;--merged-a:.22;--rim:#6ACDE0;--rim2:#F59CC3;--hi-a:.55;--shadow:0 18px 50px -20px rgba(0,0,0,.7)}}:root[data-theme=dark]{color-scheme:dark;--ground:#0E2130;--ground-2:#17344A;--panel:#132B3D;--panel-2:#183548;--ink:#E3EEF0;--ink-soft:#9CB2C1;--line:#2A4B60;--accent:#F6B73A;--accent-ink:#2B1B00;--accent-soft:#3F3218;--good:#4CC38A;--bad:#F2716A;--warn:#E8B04A;--bubble:#CDE7EF;--bubble-a:.14;--merged:#F6B73A;--merged-a:.22;--rim:#6ACDE0;--rim2:#F59CC3;--hi-a:.55;--shadow:0 18px 50px -20px rgba(0,0,0,.7)}html,body{height:100%}@supports (height:100dvh){html,body{height:100dvh}}body:has(>#app:not([hidden])){overflow:hidden}body:has(>#teacher-view:not([hidden])){height:auto;min-height:100%}body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.45;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}[hidden]{display:none!important}#app{height:100%;display:grid;grid-template-rows:auto 1fr auto;overflow:hidden}.bar{display:flex;align-items:center;gap:12px 18px;flex-wrap:wrap;padding:10px 16px;background:var(--ground);border-bottom:1px solid var(--line);position:relative;z-index:5}.brand{display:flex;align-items:center;gap:10px;background:none;border:0;padding:4px 0;font-family:var(--display);font-weight:700;font-size:17px;letter-spacing:-.01em}.dots{position:relative;width:30px;height:26px;flex:none}.dots i{position:absolute;border-radius:50%;border:2px solid var(--rim);background:color-mix(in srgb,var(--bubble) 60%,transparent)}.dots i:nth-child(1){width:18px;height:18px;left:0;top:6px}.dots i:nth-child(2){width:12px;height:12px;left:15px;top:0;border-color:var(--rim2)}.dots i:nth-child(3){width:9px;height:9px;left:19px;top:15px;border-color:var(--accent)}.hud{display:flex;align-items:center;gap:18px;margin-left:auto}.hud-set{display:flex;flex-direction:column;align-items:flex-end;line-height:1.2;min-width:0}.hud-set b{font-weight:800;max-width:36vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hud-set span{color:var(--ink-soft);font-size:13px}.tag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:1px 7px;border-radius:99px;background:var(--accent-soft);color:var(--ink);margin-left:6px;vertical-align:1px}.moves{display:flex;flex-direction:column;align-items:center;min-width:64px;padding:4px 12px;border-radius:16px;background:var(--panel);border:1px solid var(--line)}.moves-n{font-family:var(--display);font-weight:700;font-size:24px;line-height:1.05;font-variant-numeric:tabular-nums}.moves-l{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft)}.moves.low{border-color:var(--bad)}.moves.low .moves-n{color:var(--bad)}.tools{display:flex;gap:8px;align-items:center}.hud[hidden]+.tools{margin-left:auto}.chipbtn{border:1px solid var(--line);background:var(--panel);border-radius:99px;padding:6px 12px;font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}.chipbtn[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent)}.langpick{padding:0;position:relative}.langpick select{appearance:none;-webkit-appearance:none;border:0;background:transparent;font:inherit;font-weight:700;color:inherit;padding:6px 26px 6px 12px;border-radius:99px;cursor:pointer;line-height:1.25;margin:0}.langpick:after{content:"";position:absolute;right:11px;top:50%;width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-70%) rotate(45deg);pointer-events:none}.langpick:focus-within{outline:3px solid var(--accent);outline-offset:2px}.chipbtn .dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}.stage{position:relative;overflow:hidden;background:radial-gradient(120% 85% at 50% 0%,var(--ground-2),var(--ground) 65%);min-height:0}.stage canvas{position:absolute;inset:0;display:block;touch-action:manipulation}.screen{position:absolute;inset:0;z-index:3;overflow:auto;display:flex;align-items:flex-start;justify-content:center;padding:28px 16px 40px;background:color-mix(in srgb,var(--ground) 38%,transparent);backdrop-filter:blur(2px)}.card{width:100%;max-width:640px;margin:auto 0;background:var(--panel);border:1px solid var(--line);border-radius:26px;padding:28px clamp(18px,4vw,34px);box-shadow:var(--shadow)}.kicker{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);margin:0 0 8px}.h1{font-family:var(--display);font-weight:700;font-size:clamp(22px,4.2vw,30px);line-height:1.15;letter-spacing:-.015em;margin:0 0 14px;text-wrap:balance}.h2{font-family:var(--display);font-weight:500;font-size:17px;margin:24px 0 12px}.rules{list-style:none;margin:0;padding:0;display:grid;gap:8px;color:var(--ink-soft);max-width:60ch}.rules li{display:flex;gap:10px;align-items:baseline}.rules li:before{content:"";flex:none;width:10px;height:10px;border-radius:50%;border:2px solid var(--rim);transform:translateY(1px)}.sets{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}.setcard{display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;background:var(--panel-2);border:1px solid var(--line);border-radius:18px;padding:14px 16px;transition:border-color .15s,transform .15s}.setcard:hover{border-color:var(--accent);transform:translateY(-1px)}.setcard b{font-size:16px;font-weight:800;line-height:1.25}.setcard .meta{font-size:13px;color:var(--ink-soft)}.setcard .go{margin-top:6px;font-size:13px;font-weight:800;color:var(--ink);display:flex;gap:6px;align-items:center}.setcard .go:after{content:"→";color:var(--accent)}.empty{color:var(--ink-soft)}.btn{border:0;border-radius:99px;padding:11px 20px;font-weight:800;font-size:15px;background:var(--accent);color:var(--accent-ink);display:inline-flex;align-items:center;gap:8px}.btn:hover{filter:brightness(1.05)}.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}.btn.small{padding:7px 14px;font-size:13px}.btn.danger{background:var(--bad);color:#fff}.btn:disabled{opacity:.5;cursor:not-allowed}.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.score{display:flex;gap:10px;margin:4px 0 16px}.score i{width:34px;height:34px;border-radius:50%;border:3px solid var(--line);position:relative}.score i.on{border-color:var(--rim);background:color-mix(in srgb,var(--rim) 22%,transparent)}.score i.on:after{content:"";position:absolute;width:9px;height:6px;border-radius:50%;background:#fff;opacity:.9;left:7px;top:6px}.stats{color:var(--ink-soft);margin:0 0 6px;font-variant-numeric:tabular-nums}.review{list-style:none;padding:0;margin:0;display:grid;gap:8px}.review li{background:var(--panel-2);border-radius:14px;padding:10px 14px;border:1px solid var(--line)}.review .pair{font-weight:800}.review .why{font-size:13px;color:var(--ink-soft)}.grp{display:inline-block;padding:0 8px;border-radius:99px;font-weight:800;font-size:12.5px;color:#fff;background:var(--c)}.grouplist{list-style:none;padding:0;margin:0;display:grid;gap:8px}.grouplist li{display:flex;gap:10px;flex-wrap:wrap;align-items:baseline}.learn{position:absolute;left:50%;bottom:14px;transform:translate(-50%);z-index:4;width:min(440px,calc(100% - 32px));background:var(--panel);border:1px solid var(--line);border-left:0;border-radius:20px;box-shadow:var(--shadow);padding:14px 16px 14px 20px;overflow:hidden;animation:rise .28s ease-out}.learn:before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--c)}.learn-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.learn-name{font-family:var(--display);font-weight:700;font-size:20px;margin:2px 0 8px}.learn-words{display:flex;flex-wrap:wrap;gap:6px 14px;list-style:none;margin:0;padding:0}.learn-words li{font-weight:700}.learn-words i{font-style:normal;font-weight:500;color:var(--ink-soft);margin-left:4px}.note{position:absolute;top:12px;left:50%;transform:translate(-50%);z-index:4;background:var(--ink);color:var(--ground);border-radius:99px;padding:8px 8px 8px 16px;font-weight:700;font-size:14px;display:flex;gap:10px;align-items:center;max-width:calc(100% - 32px)}.note button{border:0;background:color-mix(in srgb,var(--ground) 20%,transparent);color:var(--ground);border-radius:99px;padding:4px 10px;font-weight:800}@keyframes rise{0%{transform:translate(-50%,16px);opacity:0}to{transform:translate(-50%);opacity:1}}.tray{display:flex;align-items:center;gap:10px;padding:10px 16px;border-top:1px solid var(--line);background:var(--ground);min-height:62px}.boost{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--panel);border-radius:99px;padding:6px 8px 6px 10px;font-weight:800;font-size:14px}.boost svg{width:22px;height:22px;flex:none}.boost b{min-width:22px;height:22px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-size:12px;font-variant-numeric:tabular-nums}.boost:disabled{opacity:.45;cursor:not-allowed}.boost[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft)}.sorted{display:flex;align-items:center;gap:8px;min-width:0;flex:1;margin-left:6px}.sorted-l{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);flex:none}.chips{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding:2px 0}.chip{flex:none;padding:3px 10px;border-radius:99px;background:var(--c);color:#fff;font-weight:800;font-size:13px;animation:chipin .3s ease-out}.chip.ghost{background:transparent;border:1.5px dashed var(--line);color:var(--ink-soft);font-weight:700}@keyframes chipin{0%{transform:scale(.6);opacity:0}}.lvtop{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}.levels{display:grid;grid-template-columns:repeat(auto-fill,minmax(68px,1fr));gap:12px;margin:16px 0 20px}.lvl{aspect-ratio:1;max-width:100%;border-radius:50%;border:2px solid var(--rim);background:color-mix(in srgb,var(--bubble) 70%,var(--panel));display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;position:relative;padding:0;transition:transform .15s}.lvl:hover:not(:disabled){transform:translateY(-2px)}.lvl:before{content:"";position:absolute;width:22%;height:12%;left:20%;top:17%;border-radius:50%;background:#fff;opacity:var(--hi-a)}.lvl-n{font-family:var(--display);font-weight:700;font-size:19px;line-height:1;font-variant-numeric:tabular-nums}.lvl-s{display:flex;gap:3px;height:6px}.lvl-s i{width:6px;height:6px;border-radius:50%;border:1.5px solid var(--line)}.lvl-s i.on{background:var(--accent);border-color:var(--accent)}.lvl-d{font-size:11px;font-weight:800;color:var(--ink-soft);font-variant-numeric:tabular-nums}.lvl.cur{border-color:var(--accent);border-width:3px;background:var(--accent-soft)}.lvl.locked{border-style:dashed;border-color:var(--line);opacity:.5;cursor:not-allowed}.kinds{margin-bottom:8px}.segbtn:disabled{opacity:.45;cursor:not-allowed}.printbox{display:grid;gap:8px;margin-top:10px;padding-top:12px;border-top:1px solid var(--line)}.printbox .inline{font-size:13px;font-weight:700;color:var(--ink-soft)}.printbox select{border:1px solid var(--line);background:var(--ground-2);border-radius:10px;padding:5px 8px}.teacher-entry{margin:14px 0 0;padding-top:12px;border-top:1px solid var(--line)}.linkbtn{border:0;background:none;padding:2px 0;font-weight:700;font-size:13.5px;color:var(--ink-soft);text-decoration:underline;text-underline-offset:3px}.linkbtn:hover{color:var(--ink)}.kbdhelp{font-size:13px;color:var(--ink-soft);margin:12px 0 0}.kbdhelp kbd{font-family:var(--body);font-weight:800;font-size:12px;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:0 5px;background:var(--panel-2);color:var(--ink)}.stage canvas:focus{outline:none}.stage canvas:focus-visible{outline:3px solid var(--accent);outline-offset:-3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.sheet-wrap{position:fixed;inset:0;z-index:20;background:color-mix(in srgb,var(--ink) 40%,transparent);display:flex;justify-content:center;align-items:stretch;padding:calc(env(safe-area-inset-top,0px) + 16px) 16px calc(env(safe-area-inset-bottom,0px) + 16px)}.sheet{width:100%;max-width:1120px;background:var(--panel);border-radius:24px;border:1px solid var(--line);display:grid;grid-template-rows:auto 1fr auto;overflow:hidden;box-shadow:var(--shadow)}.sheet-head{display:flex;align-items:center;gap:12px;padding:14px 20px;border-bottom:1px solid var(--line);flex-wrap:wrap}.sheet-head h2{font-family:var(--display);font-weight:700;font-size:18px;margin:0}.dirty{font-size:12px;font-weight:800;color:var(--warn);display:flex;align-items:center;gap:6px}.dirty:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--warn)}.sheet-head .btn{margin-left:auto}.sheet-body{display:grid;grid-template-columns:230px 1fr;min-height:0}.setlist{border-right:1px solid var(--line);padding:14px;display:flex;flex-direction:column;gap:6px;overflow:auto;background:var(--panel-2)}.setitem{display:flex;flex-direction:column;align-items:flex-start;text-align:left;border:1px solid transparent;background:transparent;border-radius:14px;padding:9px 12px;font-weight:800;line-height:1.25}.setitem small{font-weight:600;color:var(--ink-soft);font-size:12.5px}.setitem.cur{background:var(--panel);border-color:var(--line)}.setitem.add{color:var(--ink-soft);border:1.5px dashed var(--line);margin-top:6px;flex-direction:row;justify-content:center}.editor{overflow:auto;padding:18px 22px 24px;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:22px;align-content:start}.main{display:grid;gap:14px;align-content:start;min-width:0}.side{display:grid;gap:12px;align-content:start;position:sticky;top:0}.meta{display:grid;grid-template-columns:2fr 1.2fr 1.2fr;gap:12px}.f{display:grid;gap:5px}.f label,.lbl{font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}.f input,.f select,.f textarea{width:100%;border:1px solid var(--line);background:var(--ground-2);border-radius:12px;padding:9px 12px}.f textarea{min-height:260px;resize:vertical;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:13.5px;line-height:1.6;white-space:pre;overflow-x:auto}.help{font-size:13px;color:var(--ink-soft);margin:0;max-width:62ch}.help code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;background:var(--panel-2);padding:1px 5px;border-radius:6px;color:var(--ink)}.issues{list-style:none;margin:0;padding:0;display:grid;gap:6px}.issues li{font-size:13.5px;display:flex;gap:8px;align-items:baseline}.issues .sev{flex:none;font-size:10.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:1px 7px;border-radius:99px;color:#fff}.issues .sev.error{background:var(--bad)}.issues .sev.warn{background:var(--warn)}.issues .ok{color:var(--good);font-weight:800}.pgroups{display:grid;gap:8px}.pg{border:1px solid var(--line);border-radius:14px;padding:8px 12px;background:var(--ground-2)}.pg-h{display:flex;justify-content:space-between;gap:8px;font-weight:800}.pg-h span{font-variant-numeric:tabular-nums;font-size:12.5px;color:var(--ink-soft)}.pg.off{opacity:.55}.pg p{margin:2px 0 0;font-size:13px;color:var(--ink-soft)}.confirm{display:flex;gap:8px;align-items:center;flex-wrap:wrap;background:color-mix(in srgb,var(--bad) 12%,transparent);border-radius:14px;padding:8px 12px;font-weight:700}.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none}.tab{border:0;background:none;padding:9px 14px;font-weight:800;color:var(--ink-soft);border-bottom:3px solid transparent;margin-bottom:-1px;white-space:nowrap}.tab:hover{color:var(--ink)}.tab[aria-selected=true]{color:var(--ink);border-bottom-color:var(--accent)}.pane{display:grid;gap:14px;align-content:start;min-width:0}.gcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}.gcard{border:1px solid var(--line);border-radius:18px;background:var(--ground-2);padding:10px 12px 12px;display:flex;flex-direction:column;gap:8px;min-width:0}.gcard.short{border-style:dashed}.gcard.over{border-color:var(--accent);background:var(--accent-soft)}.gcard-h{display:flex;gap:6px;align-items:center}.gname{flex:1;min-width:0;border:1px solid transparent;background:transparent;border-radius:10px;padding:5px 8px;font-weight:800;font-size:15px}.gname:hover,.gname:focus{border-color:var(--line);background:var(--panel)}.gcount{flex:none;font-size:12px;font-weight:800;min-width:26px;height:24px;padding:0 6px;border-radius:12px;display:grid;place-items:center;background:var(--panel);border:1px solid var(--line);font-variant-numeric:tabular-nums}.iconbtn{flex:none;border:0;background:transparent;border-radius:10px;min-width:28px;height:28px;font-size:18px;line-height:1;color:var(--ink-soft)}.iconbtn:hover{background:var(--panel)}.iconbtn.armed{background:var(--bad);color:#fff;font-size:12px;font-weight:800;padding:0 9px}.wchips{display:flex;flex-wrap:wrap;gap:6px}.wchip{border:1.5px solid var(--rim);background:var(--panel);border-radius:99px;padding:4px 11px;font-weight:700;font-size:14px;display:inline-flex;gap:6px;align-items:baseline;cursor:grab;max-width:100%;overflow-wrap:anywhere;text-align:left}.wchip i{font-style:normal;font-weight:500;color:var(--ink-soft);font-size:12.5px}.wchip.dup{border-color:var(--warn);border-style:dashed}.wchip.sel{border-color:var(--accent);background:var(--accent-soft)}.wadd{border:1px dashed var(--line);background:transparent;border-radius:12px;padding:7px 10px;font-size:13.5px;width:100%}.wadd:focus{border-style:solid;background:var(--panel)}.gwarn{margin:0;font-size:12.5px;color:var(--bad);font-weight:700}.gcard.addg{align-items:center;justify-content:center;min-height:120px;border-style:dashed;color:var(--ink-soft);font-weight:800;background:transparent}.selbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;background:var(--accent-soft);border-radius:14px;padding:8px 12px}.drop{position:relative;display:grid;gap:4px;place-items:center;text-align:center;border:2px dashed var(--line);border-radius:18px;padding:26px 16px;background:var(--ground-2);cursor:pointer}.drop input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}.drop b{font-size:16px}.drop span{color:var(--ink-soft);font-size:13.5px}.drop.over{border-color:var(--accent);background:var(--accent-soft)}.fhelp,.fgroup{display:grid;gap:8px}.fhelp .lbl,.fgroup .lbl,.side .lbl{margin:0}.cand{border:1.5px solid var(--accent);border-radius:18px;padding:14px;display:grid;gap:12px;background:var(--panel)}.cand-found{margin:0;font-weight:800}.cand-set{display:grid;gap:8px}.seg{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.seg .lbl{margin-right:4px}.segbtn{border:1px solid var(--line);background:var(--panel);border-radius:99px;padding:5px 12px;font-weight:700;font-size:13px}.segbtn[aria-pressed=true]{background:var(--ink);color:var(--ground);border-color:var(--ink)}.aiform{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.aiform .wide{grid-column:1/-1}.check-row{display:flex;gap:10px;align-items:center;font-weight:600}.check-row input{width:18px;height:18px;accent-color:var(--accent);flex:none}.note-box{background:var(--panel-2);border:1px solid var(--line);border-radius:14px;padding:14px;margin:0;color:var(--ink-soft)}.thinking{display:flex;gap:8px;padding:10px 2px}.thinking i{width:14px;height:14px;border-radius:50%;border:2px solid var(--rim);animation:bob 1s ease-in-out infinite}.thinking i:nth-child(2){animation-delay:.15s;border-color:var(--rim2)}.thinking i:nth-child(3){animation-delay:.3s;border-color:var(--accent)}@keyframes bob{50%{transform:translateY(-6px)}}.copywrap{padding:0 20px 14px}.sheet-foot{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 20px;border-top:1px solid var(--line)}.status{font-size:13.5px;color:var(--ink-soft);flex:1;min-width:200px}.status.err{color:var(--bad);font-weight:700}.status.ok{color:var(--good);font-weight:700}.filebtn{position:relative;overflow:hidden}.filebtn input{position:absolute;inset:0;opacity:0;cursor:pointer}.jsonbox{width:100%;min-height:120px;font-family:ui-monospace,Menlo,monospace;font-size:12px;border:1px solid var(--line);border-radius:12px;background:var(--ground-2);padding:8px}@media(max-width:1000px){.editor{grid-template-columns:1fr}.side{position:static}}@media(max-width:820px){.sheet-body{grid-template-columns:1fr;grid-template-rows:auto 1fr}.setlist{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);padding:10px}.setitem{flex:none;max-width:200px}.editor{padding:16px}}@media(max-width:560px){body{font-size:16px}.chipbtn{font-size:14px;padding:7px 12px}.langpick{padding:0}.langpick select{padding:7px 26px 7px 12px}.setcard b{font-size:17px}.setcard .meta,.setcard .go{font-size:14px}.rules{font-size:15.5px}.lvl-n{font-size:21px}.bar{padding:8px 16px}.hud{order:3;width:100%;justify-content:space-between;margin-left:0}.hud-set{align-items:flex-start}.hud-set b{max-width:60vw}.tools{margin-left:auto}.sorted-l,.boost span{display:none}.meta{grid-template-columns:1fr}.aiform{grid-template-columns:1fr 1fr}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}#teacher-view{min-height:100%;display:flex;flex-direction:column;background:var(--ground)}.tv-bar a.brand{color:inherit;text-decoration:none}.tv-bar a.chipbtn{text-decoration:none;color:inherit}.tv-bar .tools{margin-left:auto}.tv-title{font-weight:800;color:var(--ink-soft);font-size:14px}.tv-who{font-size:13px;color:var(--ink-soft);font-weight:700;max-width:40vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tv-main{flex:1;display:flex;flex-direction:column;align-items:center;gap:18px;padding:28px 16px 48px}.tv-card{max-width:460px;margin:0;display:grid;gap:14px}.tv-card .h1,.tv-card .help{margin:0}.tv-wide{max-width:860px;margin:0}.tv-note{padding-top:12px;border-top:1px solid var(--line)}.tv-code{display:grid;gap:12px;padding-top:12px;border-top:1px solid var(--line)}.tv-msg{margin:0;max-width:860px;width:100%;padding:10px 14px;border-radius:14px;font-weight:700;font-size:14px}.tv-msg.err{background:color-mix(in srgb,var(--bad) 14%,transparent);color:var(--bad)}.tv-msg.ok{background:color-mix(in srgb,var(--good) 14%,transparent);color:var(--good)}.tv-tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.tv-tile{display:grid;gap:4px;align-content:start;border:1.5px dashed var(--line);border-radius:18px;padding:14px 16px;background:var(--panel-2)}.tv-tile b{font-size:16px}.tv-tile span{font-size:13.5px;color:var(--ink-soft)}.tv-tile em{font-style:normal;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--warn)}.tv-list{list-style:none;margin:0 0 6px;padding:0;display:grid;gap:6px}.tv-list li{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;padding:9px 12px;border:1px solid var(--line);border-radius:14px;background:var(--panel-2)}.tv-list b{font-weight:800;overflow-wrap:anywhere}.tv-date{font-size:12.5px;color:var(--ink-soft);margin-left:auto}.tv-confirm{display:flex;gap:6px;align-items:center;font-size:13px;font-weight:700}.tv-invite input{flex:1;min-width:200px;border:1px solid var(--line);background:var(--ground-2);border-radius:12px;padding:9px 12px}@media(max-width:560px){.tv-title,.tv-who{display:none}}.tv-tile.on{border-style:solid;border-color:var(--accent);background:var(--panel)}.tv-tile .row{margin-top:8px}.tv-tile a.btn{text-decoration:none}.tv-mini{list-style:none;margin:4px 0 0;padding:0;display:grid;gap:2px;font-size:13.5px;font-weight:700}.tv-mini i{font-style:normal;font-weight:600;color:var(--ink-soft)}.cls-item{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;width:100%;color:inherit;text-decoration:none}.cls-item:hover b{text-decoration:underline;text-underline-offset:3px}.cls-code-sm{font-family:var(--display);font-weight:700;font-size:13px;letter-spacing:.08em;color:var(--ink-soft)}.cls-arch{margin-top:14px}.cls-arch summary{cursor:pointer;font-weight:800;color:var(--ink-soft);margin-bottom:8px}.cls-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:10px 0 16px}.cls-name{flex:1;min-width:200px;font-family:var(--display);font-weight:700;font-size:clamp(20px,3.6vw,26px);color:var(--ink);border:1px solid transparent;background:transparent;border-radius:12px;padding:4px 8px;margin-left:-8px}.cls-name:hover,.cls-name:focus{border-color:var(--line);background:var(--ground-2)}.cls-join{display:grid;grid-template-columns:minmax(150px,210px) 1fr;gap:22px;align-items:start}.cls-qr{background:#fff;border-radius:16px;padding:8px;border:1px solid var(--line)}.cls-qr svg{display:block;width:100%;height:auto}.cls-info{display:grid;gap:6px;min-width:0}.cls-info .lbl{margin:0}.cls-code{margin:0 0 8px;font-family:var(--display);font-weight:700;font-size:34px;letter-spacing:.12em;line-height:1}.cls-link{margin:0 0 8px}.cls-link code{font-size:13px;background:var(--ground-2);border:1px solid var(--line);border-radius:10px;padding:5px 9px;display:inline-block;max-width:100%;overflow-wrap:anywhere}.cls-warn{flex-wrap:wrap;margin:6px 0;padding:8px 12px;border-radius:12px;background:color-mix(in srgb,var(--bad) 10%,transparent)}.cls-sets li{gap:8px}.cls-pos{width:24px;height:24px;border-radius:50%;background:var(--accent-soft);display:grid;place-items:center;font-size:12px;font-weight:800;flex:none}.cls-ord{margin-left:auto;display:flex;gap:2px}.cls-ord .iconbtn:disabled{opacity:.3;cursor:default}.cls-add{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}.cls-danger{color:var(--bad);border-color:color-mix(in srgb,var(--bad) 45%,var(--line))}.projector{position:fixed;inset:0;z-index:40;background:#fff;color:#15304a;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2vh;padding:24px;text-align:center}.projector .proj-close{position:absolute;top:16px;right:16px;color:#15304a;border-color:#c3d6db}.proj-name{margin:0;font-family:var(--display);font-weight:700;font-size:clamp(24px,4vw,44px)}.proj-qr{width:min(52vh,80vw)}.proj-qr svg{display:block;width:100%;height:auto}.proj-code{margin:0;font-family:var(--display);font-weight:700;font-size:clamp(40px,9vw,96px);letter-spacing:.14em;line-height:1}.proj-link{margin:0;font-size:clamp(14px,2vw,22px);color:#4e6577}@media(max-width:620px){.cls-join{grid-template-columns:1fr}.cls-qr{max-width:220px}}.classbox{display:grid;gap:12px;margin:4px 0 18px;padding:14px 16px;border-radius:18px;background:var(--accent-soft)}.classbox .btn{justify-self:start;text-decoration:none}.code-form{display:grid;gap:6px}.code-form .lbl{margin:0}.code-form input,.join-form input{flex:1;min-width:0;border:1.5px solid var(--line);background:var(--panel);border-radius:14px;padding:11px 14px;font-weight:800;font-size:18px}.code-form input{text-transform:uppercase;letter-spacing:.14em;font-family:var(--display);max-width:220px}.code-form .row{flex-wrap:nowrap}.join{max-width:520px}.join-form{display:grid;gap:10px;margin-top:6px}.join-form .lbl{margin:0;text-transform:none;letter-spacing:0;font-size:15px;color:var(--ink-soft);font-weight:600}.join-form .btn{justify-self:start}.join-err{margin:10px 0 0;color:var(--bad);font-weight:700}.rules-d{margin-top:16px}.rules-d summary{cursor:pointer;font-weight:800;color:var(--ink-soft);margin-bottom:8px}.class-links{display:flex;gap:18px;flex-wrap:wrap}.st-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}.st-tile{display:grid;gap:2px;padding:12px 14px;border-radius:16px;background:var(--panel-2);border:1px solid var(--line)}.st-tile b{font-family:var(--display);font-weight:700;font-size:26px;line-height:1.1;font-variant-numeric:tabular-nums}.st-tile span{font-size:13px;color:var(--ink-soft);font-weight:700}.st-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:14px}.st-grid{border-collapse:separate;border-spacing:0;width:100%;font-size:14px}.st-grid th,.st-grid td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:center;white-space:nowrap}.st-grid thead th{font-size:12.5px;font-weight:800;color:var(--ink-soft);background:var(--panel-2);position:sticky;top:0}.st-grid tbody th{text-align:left;position:sticky;left:0;background:var(--panel);z-index:1}.st-grid tbody tr:last-child th,.st-grid tbody tr:last-child td{border-bottom:0}.st-cell{background:color-mix(in srgb,var(--rim) var(--a,0%),transparent);font-variant-numeric:tabular-nums}.st-cell b{display:block;font-size:16px;font-weight:800}.st-cell.none{color:var(--ink-soft);background:transparent}.st-dots{display:inline-flex;gap:3px}.st-dots i{width:6px;height:6px;border-radius:50%;border:1.5px solid color-mix(in srgb,var(--ink) 35%,transparent)}.st-dots i.on{background:var(--accent);border-color:var(--accent)}.st-seen{font-size:12.5px;color:var(--ink-soft)}.st-detail td{text-align:left;background:var(--ground-2);white-space:normal}.st-det{display:grid;grid-template-columns:1fr 1fr;gap:16px}.st-det .lbl{margin:0 0 4px}.st-miss{margin:0;font-weight:700}.st-bars{list-style:none;margin:0;padding:0;display:grid;gap:6px}.st-bars li{display:grid;grid-template-columns:minmax(120px,1.1fr) 2fr auto;gap:12px;align-items:center}.st-word{display:flex;flex-direction:column;line-height:1.2;min-width:0}.st-word b{overflow-wrap:anywhere}.st-word i{font-style:normal;font-size:12px;color:var(--ink-soft)}.st-bar{height:12px;border-radius:6px;background:var(--panel-2);overflow:hidden}.st-bar span{display:block;height:100%;border-radius:0 6px 6px 0;background:var(--rim)}.st-num{font-size:12.5px;font-weight:700;color:var(--ink-soft);font-variant-numeric:tabular-nums;white-space:nowrap}@media(max-width:560px){.st-bars li{grid-template-columns:1fr auto}.st-bar{grid-column:1/-1;order:3}.st-det{grid-template-columns:1fr}}@media(max-width:560px){input,select,textarea{font-size:16px!important}.code-form .row{flex-wrap:wrap}.code-form input{max-width:none;flex:1 1 150px}}.classbox{grid-template-columns:minmax(0,1fr)}.classbox>*,.code-form,.code-form .row{min-width:0}.code-form input{width:0}.btn.google{background:var(--panel);color:var(--ink);border:1.5px solid var(--line);justify-content:center;gap:10px}.btn.google:hover{border-color:var(--ink-soft);filter:none}.tv-or{margin:0;text-align:center;font-size:12.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}.gmenu{display:grid;gap:6px;padding:10px;border-radius:12px;background:var(--accent-soft)}.gmenu .lbl{margin:0}.gmenu select{border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:6px 8px}.lib-list li{gap:8px 12px}.lib-main{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1 1 220px}.lib-share,.lib-prev{flex-basis:100%;display:grid;gap:8px;padding:10px 12px;border-radius:12px;background:var(--panel)}.lib-share select{border:1px solid var(--line);background:var(--ground-2);border-radius:10px;padding:6px 8px;min-width:0;max-width:100%}.lib-chips{display:flex;flex-wrap:wrap;gap:6px}.lib-chip{display:inline-flex;align-items:center;gap:4px;padding:3px 4px 3px 10px;border-radius:99px;background:var(--accent-soft);font-weight:700;font-size:13px}.lib-chip button{border:0;background:transparent;font-size:16px;line-height:1;padding:0 6px;cursor:pointer;color:var(--ink-soft)}.lib-prev p{margin:0;font-size:13.5px}.wchip.haspic{align-items:center;padding-left:5px}.wchip .wimg{width:24px;height:24px;border-radius:50%;object-fit:cover;flex:none}.wchip .wimg.emo{width:auto;height:auto;font-size:18px;line-height:1;border-radius:0}.wchip .wlabel{text-decoration:none;opacity:.55;font-weight:600;font-size:12.5px}.imgpanel{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:start;border:1.5px solid var(--rim);border-radius:14px;padding:12px;margin:8px 0;background:var(--panel)}.imgprev{width:96px;height:96px;border-radius:50%;background:var(--accent-soft);display:grid;place-items:center;overflow:hidden}.imgprev .bigpic{width:100%;height:100%;object-fit:cover}.imgprev .bigpic.emo{width:auto;height:auto;font-size:54px;line-height:1}.imgprev .noimg{font-size:12px;color:var(--ink-soft);text-align:center;padding:6px}.imgctl{display:flex;flex-direction:column;gap:8px;min-width:0}.imgctl .row{display:flex;gap:6px;flex-wrap:wrap;align-items:center}.imgctl input[type=text]{flex:1;min-width:0}.imgctl .filebtn{position:relative;overflow:hidden;align-self:flex-start;cursor:pointer}.imgctl .filebtn input{position:absolute;inset:0;opacity:0;cursor:pointer}.emojis{display:flex;flex-wrap:wrap;gap:4px}.emo-btn{font-size:20px;line-height:1;padding:4px 6px;border-radius:8px;border:1px solid var(--rim);background:transparent;cursor:pointer}.emo-btn:hover{background:var(--accent-soft)}@media(max-width:520px){.imgpanel{grid-template-columns:minmax(0,1fr)}.imgprev{width:72px;height:72px}}.offline-note{margin:4px 0 12px;padding:8px 12px;border-radius:12px;background:var(--accent-soft);font-weight:600;font-size:14px}.gcopybtn{flex:none;border:1px solid var(--rim);background:transparent;border-radius:99px;padding:3px 9px;font-size:12.5px;font-weight:700;color:var(--ink-soft);white-space:nowrap;cursor:pointer}.gcopybtn:hover,.gcopybtn[aria-expanded=true]{background:var(--accent-soft);color:inherit}.gbulk-row{display:flex;justify-content:flex-end;margin:0 0 8px}.gmenu.bulk{margin:0 0 12px}.gpick{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:4px 12px}.gpick small{color:var(--ink-soft);font-weight:600}.gmenu .linkbtn{justify-self:start}@media(max-width:520px){.gcard-h{flex-wrap:wrap}.gcopybtn{order:5}}.teacher-top{text-decoration:none;white-space:nowrap;box-shadow:0 2px #00000014}.teacher-top .tt-short{display:none}.hud:not([hidden])~.tools .teacher-top{display:none}@media(max-width:560px){.teacher-top .tt-long{display:none}.teacher-top .tt-short{display:inline}.teacher-top{padding:7px 12px;font-size:14px}}.tv-tabs{justify-self:start}.tv-form{display:grid;gap:12px}.tv-form .f .help{display:block;margin-top:4px;font-size:13px}.tv-show{font-size:14px;font-weight:600}