:root{
[hidden]{display:none!important}
  --teal:#0F6B69;--teal-600:#14807D;--teal-300:#7CC7C0;--teal-100:#DDF1EE;--teal-50:#EEF7F5;
  --ink:#2D2A26;--muted:#6B655D;--canvas:#FBF7F1;--surface:#FFFFFF;--sand:#F3ECE2;--cream:#F8F0DB;--border:#E7DED2;--line:#CFC5B8;
  --coral:#A8532F;--coral-100:#FBE9DF;--gold:#8A6418;--gold-100:#F7EBCB;--green:#2B7A4F;--green-100:#E4F2EA;--red:#B23D33;--red-100:#FBE6E3;
  --code:#1D2A2A;--code-2:#243433;--code-ink:#E6F0EE;
  --r:8px;--r-lg:12px;--shadow:0 1px 2px rgba(45,42,38,.05),0 4px 12px rgba(45,42,38,.04);
  --font:"Noto Sans","Segoe UI",system-ui,-apple-system,sans-serif;--mono:"DejaVu Sans Mono",Menlo,Consolas,monospace;
  --fs:16px;--lh:1.5;color-scheme:light;
}
[data-theme=dark]{
  --teal:#5CC4BB;--teal-600:#7CD3CB;--teal-300:#2F7F79;--teal-100:#173B39;--teal-50:#132E2D;
  --ink:#F1ECE4;--muted:#B5ADA2;--canvas:#141312;--surface:#1D1C1A;--sand:#2A2825;--cream:#2B2720;--border:#36332F;--line:#4A4640;
  --coral:#F0A27E;--coral-100:#3A251C;--gold:#E8C26A;--gold-100:#352B17;--green:#7FD1A2;--green-100:#183326;--red:#F49A90;--red-100:#3B1D1A;
  --shadow:none;color-scheme:dark;
}
[data-font=readable]{--font:Verdana,"Noto Sans","DejaVu Sans",sans-serif;--lh:1.7}
[data-font=readable] body{letter-spacing:.02em;word-spacing:.06em}
[data-size=large]{--fs:18px}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:var(--font);font-size:var(--fs);line-height:var(--lh);color:var(--ink);background:var(--canvas);-webkit-font-smoothing:antialiased}
a{color:var(--teal)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--teal-300);outline-offset:2px}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:8px;top:-60px;background:var(--teal);color:#fff;padding:10px 14px;border-radius:var(--r);z-index:100}
.skip:focus{top:8px}
.ic{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.ic.sm{width:16px;height:16px}.ic.lg{width:24px;height:24px}.ic.xl{width:32px;height:32px}
h1{font-size:30px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
h2{font-size:22px;line-height:1.3;font-weight:700}
h3{font-size:17px;line-height:1.35;font-weight:650}
p+p{margin-top:8px}
.muted{color:var(--muted)}.small{font-size:14px}.xs{font-size:13px;line-height:1.4}
.eyebrow{font-size:14px;font-weight:600;color:var(--teal);letter-spacing:.03em;text-transform:uppercase}
.mono{font-family:var(--mono)}
.kbd{font-family:var(--mono);font-size:13px;background:var(--sand);border:1px solid var(--border);border-radius:4px;padding:1px 6px}
.row{display:flex;align-items:center;gap:12px}.wrap{flex-wrap:wrap}.between{justify-content:space-between}
.stack{display:flex;flex-direction:column}.gap4{gap:4px}.gap8{gap:8px}.gap12{gap:12px}.gap16{gap:16px}.gap20{gap:20px}.gap24{gap:24px}
.grow{flex:1;min-width:0}.center{text-align:center}.right{margin-left:auto}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}

/* shell */
.app{display:grid;grid-template-columns:248px 1fr;height:100vh;height:100dvh;overflow:hidden}
.side{background:var(--surface);border-right:1px solid var(--border);padding:20px 16px;display:flex;flex-direction:column;gap:4px;overflow:auto}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 20px;font-weight:700;font-size:16px;line-height:1.2;color:var(--ink);text-decoration:none}
.brand small{display:block;font-weight:500;font-size:14px;color:var(--muted)}
.mark{width:36px;height:36px;border-radius:9px;background:var(--teal);display:grid;place-items:center;color:#fff;flex:none}
[data-theme=dark] .mark{color:#0B1F1E}
.nav a{display:flex;align-items:center;gap:12px;min-height:44px;padding:0 12px;border-radius:var(--r);color:var(--ink);text-decoration:none;font-size:15px;font-weight:500}
.nav a:hover{background:var(--sand)}
.nav a.on{background:var(--teal-100);color:var(--teal);font-weight:650}
.nav a .lock{margin-left:auto;color:var(--muted)}
.nav-label{font-size:13px;font-weight:600;color:var(--muted);padding:16px 12px 6px;letter-spacing:.03em}
.side .foot{margin-top:auto;border-top:1px solid var(--border);padding-top:12px}
.main{display:flex;flex-direction:column;min-width:0;overflow:hidden}
.top{min-height:64px;flex:none;display:flex;align-items:center;gap:12px;padding:0 32px;border-bottom:1px solid var(--border);background:var(--surface)}
.top .crumb{font-size:15px;color:var(--muted);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.top .crumb b{color:var(--ink);font-weight:600}
.top .tools{margin-left:auto;display:flex;gap:8px;align-items:center}
.tbtn{min-height:40px;display:inline-flex;align-items:center;gap:8px;padding:0 12px;border:1px solid var(--border);border-radius:var(--r);background:var(--surface);font-size:14px;font-weight:500;color:var(--ink);cursor:pointer}
.tbtn[aria-pressed=true]{background:var(--teal-100);border-color:var(--teal-300);color:var(--teal)}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--coral-100);color:var(--coral);display:grid;place-items:center;font-weight:700;font-size:14px;flex:none}
.content{flex:1;overflow:auto;padding:28px 32px 48px}
.page{max-width:1180px;margin:0 auto}
.page.narrow{max-width:760px}
.menu-btn,.tabs{display:none}
[data-focus=true] .side,[data-focus=true] .aside{display:none}
[data-focus=true] .app{grid-template-columns:1fr}
.focus-note{display:none}
[data-focus=true] .focus-note{display:inline-flex}

/* primitives */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:20px}
.card.tight{padding:14px 16px}
.card.hl{border-color:var(--teal-300);box-shadow:var(--shadow)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:var(--r);border:1px solid transparent;font-weight:600;font-size:15px;text-decoration:none;cursor:pointer;white-space:nowrap}
.btn.pri{background:var(--teal);color:#fff}
[data-theme=dark] .btn.pri{color:#0B1F1E}
.btn.pri:hover{background:var(--teal-600)}
.btn.sec{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn.sec:hover{background:var(--sand)}
.btn.ghost{background:transparent;color:var(--teal)}
.btn.danger{background:var(--red-100);color:var(--red);border-color:transparent}
.btn.sm{min-height:36px;padding:0 12px;font-size:14px}
.btn[disabled],.btn[aria-disabled=true]{opacity:.5;cursor:not-allowed}
.pill{display:inline-flex;align-items:center;gap:6px;min-height:28px;padding:0 10px;border-radius:999px;font-size:13px;font-weight:600;white-space:nowrap}
.p-teal{background:var(--teal-100);color:var(--teal)}.p-coral{background:var(--coral-100);color:var(--coral)}
.p-gold{background:var(--gold-100);color:var(--gold)}.p-green{background:var(--green-100);color:var(--green)}
.p-red{background:var(--red-100);color:var(--red)}.p-sand{background:var(--sand);color:var(--muted)}
.bar{height:8px;border-radius:99px;background:var(--sand);overflow:hidden}
.bar>i{display:block;height:100%;background:var(--teal);border-radius:99px;transition:width .4s}
.ring{--p:0;--s:120px;width:var(--s);height:var(--s);border-radius:50%;background:conic-gradient(var(--teal) calc(var(--p)*1%),var(--sand) 0);display:grid;place-items:center;margin:0 auto;flex:none}
.ring>div{width:calc(var(--s) - 24px);height:calc(var(--s) - 24px);border-radius:50%;background:var(--surface);display:grid;place-items:center;text-align:center;line-height:1.15}
.ring.sm{--s:72px}.ring.sm>div{width:56px;height:56px;font-size:15px;font-weight:700}
.coach{display:flex;gap:12px;align-items:flex-start}
.coach-av{width:52px;height:52px;border-radius:50%;background:var(--cream) url(/assets/coach-avatar.webp) center/cover no-repeat;flex:none;border:2px solid var(--surface);box-shadow:0 0 0 1px var(--border)}
.bubble{background:var(--teal-50);border:1px solid var(--teal-100);border-radius:4px var(--r-lg) var(--r-lg) var(--r-lg);padding:12px 14px;font-size:15px}
.bubble b{color:var(--teal)}
.field{display:flex;flex-direction:column;gap:6px}
.field>label,.label{font-size:14px;font-weight:600}
.hint{font-size:13px;color:var(--muted)}
.input,select.input,textarea.input{min-height:44px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);padding:0 12px;font-size:15px;width:100%}
textarea.input{padding:10px 12px;line-height:1.5;resize:vertical;min-height:120px}
.input:focus{border-color:var(--teal);outline:3px solid var(--teal-100);outline-offset:0}
.check{display:flex;gap:10px;align-items:center;min-height:44px;cursor:pointer}
.check input{width:20px;height:20px;accent-color:var(--teal)}
.alert{border-radius:var(--r);padding:12px 14px;font-size:15px;display:flex;gap:10px;align-items:flex-start}
.alert.err{background:var(--red-100);color:var(--red)}.alert.ok{background:var(--green-100);color:var(--green)}
.alert.info{background:var(--teal-50);color:var(--ink);border:1px solid var(--teal-100)}.alert.warn{background:var(--gold-100);color:var(--ink)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.empty{padding:32px;text-align:center;color:var(--muted)}
.list{list-style:none}
.li{display:flex;align-items:center;gap:14px;min-height:56px;padding:8px 0;border-bottom:1px solid var(--border);text-decoration:none;color:var(--ink)}
.li:last-child{border-bottom:0}
a.li:hover .t{color:var(--teal)}
.li .t{flex:1;font-size:15px;font-weight:500;min-width:0}
.cb{width:24px;height:24px;border-radius:6px;border:2px solid #BDB2A4;display:grid;place-items:center;flex:none;color:transparent}
.cb.done{background:var(--teal);border-color:var(--teal);color:#fff}
.dot{width:10px;height:10px;border-radius:50%;background:var(--line);flex:none}
.tabbar{display:flex;gap:4px;border-bottom:1px solid var(--border);overflow-x:auto}
.tabbar button{min-height:44px;padding:0 14px;border:0;background:none;border-bottom:3px solid transparent;font-weight:600;font-size:14px;color:var(--muted);cursor:pointer;white-space:nowrap}
.tabbar button[aria-selected=true]{color:var(--teal);border-bottom-color:var(--teal)}
table.tbl{width:100%;border-collapse:collapse;font-size:15px}
.tbl th{text-align:left;font-size:13px;color:var(--muted);font-weight:600;padding:10px 12px;border-bottom:1px solid var(--border)}
.tbl td{padding:12px;border-bottom:1px solid var(--border);vertical-align:middle}
.tbl tr:last-child td{border-bottom:0}
.scroll-x{overflow-x:auto;position:relative}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:var(--canvas);padding:12px 18px;border-radius:var(--r);z-index:90;font-size:15px;box-shadow:0 6px 24px rgba(0,0,0,.2);max-width:min(92vw,520px);display:flex;gap:10px;align-items:center}
.modal-bg{position:fixed;inset:0;background:rgba(20,18,16,.45);display:grid;place-items:center;z-index:80;padding:16px}
.modal{background:var(--surface);border-radius:var(--r-lg);padding:24px;max-width:520px;width:100%;max-height:90vh;overflow:auto;box-shadow:0 12px 40px rgba(0,0,0,.25)}
.secret{font-family:var(--mono);font-size:22px;letter-spacing:.06em;background:var(--sand);border:1px dashed var(--line);border-radius:var(--r);padding:14px;text-align:center;user-select:all}
.loading{display:grid;place-items:center;min-height:240px;color:var(--muted)}

/* auth */
.auth{min-height:100vh;display:grid;grid-template-columns:1.05fr 1fr}
.auth .art{background:#fff url(/assets/coach-wave.webp) center 30%/contain no-repeat;position:relative;border-right:1px solid var(--border)}
.auth .art .quote{position:absolute;left:32px;right:32px;bottom:32px;background:rgba(255,255,255,.94);color:#2D2A26;border-radius:var(--r-lg);padding:18px 20px;font-size:16px;max-width:460px}
.auth .form{display:flex;align-items:center;justify-content:center;padding:40px 24px}
.auth .form>div{width:100%;max-width:400px}

/* today */
.today{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px}
.next{display:grid;grid-template-columns:1fr 240px;padding:0;overflow:hidden;border-color:var(--teal-300)}
.next .txt{padding:24px;display:flex;flex-direction:column;gap:10px}
.next .pic{background:var(--cream) url(/assets/lesson-scene.webp) 30% center/cover;position:relative;min-height:180px}
.next .pic .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.95);display:grid;place-items:center;color:#0F6B69}
.weeks{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;list-style:none}
.wk{border:1px solid var(--border);background:var(--surface);border-radius:var(--r-lg);padding:10px 14px;display:flex;flex-direction:column;gap:4px;text-decoration:none;color:var(--ink)}
.wk .n{font-size:13px;font-weight:600;color:var(--muted)}
.wk b{font-size:15px;line-height:1.3}
.wk.now{border:2px solid var(--teal);background:var(--teal-50)}
.wk.lockd{background:var(--canvas)}
.wk.ai{background:var(--gold-100);border-color:#EBD9A8}
.stat{display:flex;align-items:center;gap:12px;padding:10px 0;border-top:1px solid var(--border)}
.stat .si{width:36px;height:36px;border-radius:9px;display:grid;place-items:center;flex:none}
.days{display:flex;gap:6px;flex-wrap:wrap}
.days i{width:18px;height:18px;border-radius:5px;background:var(--sand)}
.days i.on{background:var(--teal)}

/* path and module */
.mod{display:flex;gap:16px;align-items:center;text-decoration:none;color:var(--ink)}
.mod .num{width:44px;height:44px;border-radius:12px;background:var(--sand);display:grid;place-items:center;font-weight:700;flex:none}
.mod.done .num{background:var(--green-100);color:var(--green)}
.mod.cur .num{background:var(--teal);color:#fff}
.mod.locked{opacity:.65}
.steps{counter-reset:s;list-style:none}

/* lesson player */
.player{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px}
.stage{position:relative;aspect-ratio:16/9;border-radius:var(--r-lg);overflow:hidden;background:var(--cream);border:1px solid var(--border)}
.scene{position:absolute;inset:0;display:grid;place-items:center;padding:28px 32px 84px;color:#2D2A26;animation:fadeUp .5s ease both}
.scene.coach{background:#fff;grid-template-columns:1fr 1fr;padding:0 32px 84px 0;align-items:end}
.scene.coach .who{width:100%;height:100%;align-self:stretch;justify-self:stretch;background:url(/assets/coach-wave.webp) center 18%/cover no-repeat}
.scene.coach .who.cheer{background-image:url(/assets/coach-cheer.webp)}
.scene.coach h2{font-size:30px;align-self:center;color:#0F6B69}
.scene.team{background:url(/assets/lesson-scene.webp) center/cover}
.scene .panel{background:rgba(255,255,255,.95);border-radius:var(--r-lg);padding:18px 22px;max-width:640px;width:100%;box-shadow:0 4px 20px rgba(45,42,38,.08)}
.scene .vs{display:grid;grid-template-columns:1fr 1fr;gap:14px;width:100%;max-width:700px}
.scene .vs>div{background:#fff;border-radius:var(--r-lg);padding:16px;border:2px solid #E7DED2}
.scene .vs>div:last-child{border-color:#0F6B69}
.scene .vs b{display:block;margin-bottom:6px;font-size:17px}
.scene .vs li{margin:4px 0 0 18px;font-size:15px}
.scene .flow{display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:center;max-width:760px}
.scene .flow span{background:#fff;border:2px solid #7CC7C0;border-radius:10px;padding:10px 14px;font-weight:600;font-size:15px;animation:pop .45s ease both}
.scene .flow em{color:#0F6B69;font-style:normal;font-weight:700}
.scene .items li{background:#fff;border-radius:10px;padding:10px 14px;margin-top:8px;list-style:none;display:flex;gap:10px;font-size:16px;animation:fadeUp .45s ease both}
.scene pre{background:#1D2A2A;color:#E6F0EE;border-radius:var(--r-lg);padding:16px 18px;font-family:var(--mono);font-size:14px;line-height:1.6;max-width:720px;width:100%;overflow:auto;white-space:pre-wrap}
.scene pre .hi{background:rgba(124,199,192,.25);display:inline-block;width:100%;border-radius:4px}
.scene .tk{background:#fff;border-radius:var(--r-lg);padding:16px 18px;max-width:620px;width:100%;border-left:5px solid #0F6B69;font-size:15px}
.scene .tk div{display:grid;grid-template-columns:110px 1fr;gap:10px;padding:5px 0;border-top:1px solid #F3ECE2}
.scene .tk div b{color:#6B655D;font-size:13px}
.caption{position:absolute;left:16px;right:16px;bottom:14px;background:rgba(29,42,42,.92);color:#fff;border-radius:10px;padding:10px 14px;font-size:17px;line-height:1.45;text-align:center}
.ctrls{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.dots{display:flex;gap:6px}.dots i{width:28px;height:6px;border-radius:9px;background:var(--sand)}.dots i.on{background:var(--teal)}
.transcript li{margin:0 0 8px 20px}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes pop{from{opacity:0;transform:scale(.9)}to{opacity:1;transform:none}}

/* quiz */
.opts{display:flex;flex-direction:column;gap:10px}
.opt{display:flex;gap:12px;align-items:center;width:100%;max-width:100%;min-width:0;text-align:left;min-height:56px;padding:12px 16px;border:2px solid var(--border);border-radius:var(--r-lg);background:var(--surface);color:var(--ink);cursor:pointer;font-size:16px;-webkit-tap-highlight-color:transparent}
/* v2 fix: hover only on devices that really hover. On phones, :hover stuck to the next question's option and looked pre-selected. */
@media (hover:hover) and (pointer:fine){.opt:hover:not([disabled]):not([aria-pressed=true]):not([aria-checked=true]){border-color:var(--teal-300)}}
.opt .k{width:30px;height:30px;border-radius:8px;background:var(--sand);display:grid;place-items:center;font-weight:700;font-size:14px;flex:none}
.opt.right{border-color:var(--green);background:var(--green-100)}
.opt.wrong{border-color:var(--red);background:var(--red-100)}
.opt[disabled]{cursor:default}
.opt .lab{margin-left:auto}
.feedback{border-radius:var(--r-lg);padding:14px 16px;display:flex;gap:12px}
.feedback.good{background:var(--green-100)}.feedback.bad{background:var(--red-100)}
.qdots{display:flex;gap:6px;flex-wrap:wrap}.qdots i{width:24px;height:8px;border-radius:9px;background:var(--sand)}
.qdots i.r{background:var(--green)}.qdots i.w{background:var(--red)}.qdots i.c{background:var(--teal-300)}

/* bug hunt */
.hunt{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:16px}
.frame{width:100%;height:540px;border:1px solid var(--border);border-radius:var(--r-lg);background:#fff}
.timer{font-family:var(--mono);font-size:28px;font-weight:700;color:var(--teal)}
.timer.low{color:var(--red)}
.dev{background:var(--code);color:var(--code-ink);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;min-height:220px}
.dev .tabbar{border-color:#334;background:var(--code-2)}
.dev .tabbar button{color:#9FB5B2}.dev .tabbar button[aria-selected=true]{color:#fff;border-bottom-color:var(--teal-300)}
.dev .body{padding:10px 12px;font-family:var(--mono);font-size:13px;line-height:1.5;max-height:260px;overflow:auto;white-space:pre-wrap;word-break:break-word}
.net{width:100%;border-collapse:collapse}
.net td{padding:6px 8px;border-bottom:1px solid #2E4241;cursor:pointer}
.net tr:hover td,.net tr.sel td{background:#2A3E3D}
.s2{color:#7FD1A2}.s4,.s5{color:#F49A90}
.flagbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.log{border-top:1px solid var(--border);padding:10px 0}
.seg{display:inline-flex;align-self:flex-start;max-width:100%;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.seg label{display:flex;align-items:center;min-height:40px;padding:0 12px;cursor:pointer;font-size:14px;border-right:1px solid var(--line)}
.seg label:last-child{border-right:0}
.seg input{position:absolute;opacity:0}
.seg label:has(input:checked){background:var(--teal-100);color:var(--teal);font-weight:650}
.seg label:has(input:focus-visible){outline:3px solid var(--teal-300)}

/* lab */
.lab{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:16px}
.editor{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--code);border:1px solid #0E1717}
.editor .bar2{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--code-2);color:#9FB5B2;font-size:13px}
.editor textarea{display:block;width:100%;min-height:420px;border:0;background:var(--code);color:var(--code-ink);font-family:var(--mono);font-size:14px;line-height:1.6;padding:14px 16px;resize:vertical;tab-size:2;white-space:pre;overflow:auto}
.editor textarea:focus{outline:none;box-shadow:inset 0 0 0 2px var(--teal-300)}
.results .tr{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--border);font-size:14px}
.results .tr:last-child{border-bottom:0}
.ok-ic{color:var(--green)}.bad-ic{color:var(--red)}
.runner{width:100%;height:300px;border:1px solid var(--border);border-radius:var(--r-lg);background:#fff}
.err-msg{font-family:var(--mono);font-size:12.5px;color:var(--red);white-space:pre-wrap;margin-top:4px}

/* ticket */
.ticket{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:16px}
.tkt{border:1px solid var(--border);border-radius:var(--r-lg);background:var(--surface);overflow:hidden}
.tkt .hd{padding:14px 18px;border-bottom:1px solid var(--border);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.tkt .bd{padding:16px 18px;display:flex;flex-direction:column;gap:12px}
.tkt.jira .hd{background:#F4F5F7;color:#172B4D}.tkt.linear .hd{background:#F4F4F8;color:#26264A}.tkt.ado .hd{background:#EFF6FC;color:#0B3A66}.tkt.trello .hd{background:#E9F2FF;color:#0C3B7A}.tkt.github .hd{background:#F6F8FA;color:#1F2328}
[data-theme=dark] .tkt .hd{background:var(--sand)!important;color:var(--ink)!important}
.trail{list-style:none;border-left:3px solid var(--teal-100);margin-left:8px}
.trail li{position:relative;padding:0 0 14px 18px}
.trail li::before{content:"";position:absolute;left:-8px;top:6px;width:13px;height:13px;border-radius:50%;background:var(--teal);border:3px solid var(--surface)}
.trail pre{white-space:pre-wrap;font-family:var(--font);font-size:14px;background:var(--teal-50);border-radius:var(--r);padding:10px 12px;margin-top:4px}

/* vocab */
.flash{perspective:1000px;min-height:260px}
.flash .in{position:relative;min-height:260px;transition:transform .5s;transform-style:preserve-3d}
.flash.flip .in{transform:rotateY(180deg)}
.flash .face{position:absolute;inset:0;backface-visibility:hidden;border-radius:var(--r-lg);border:1px solid var(--border);background:var(--surface);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:24px;text-align:center}
.flash .back{transform:rotateY(180deg);background:var(--teal-50)}

/* certificate */
.cert{background:#FFFDF8;color:#2D2A26;border:10px solid #0F6B69;outline:2px solid #E2B04A;outline-offset:-22px;border-radius:6px;padding:56px 48px;text-align:center;max-width:900px;margin:0 auto;aspect-ratio:1.414/1;display:flex;flex-direction:column;justify-content:center;gap:14px}
.cert h1{font-size:40px;color:#0F6B69;font-family:Georgia,"Noto Serif",serif}
.cert .nm{font-size:36px;font-family:Georgia,"Noto Serif",serif;border-bottom:2px solid #E2B04A;display:inline-block;padding:0 24px 6px;margin:0 auto}
@media print{
  body{background:#fff}.side,.top,.tabs,.no-print,.skip{display:none!important}
  .app{display:block;height:auto}.main,.content{overflow:visible;padding:0}
  .cert{border-width:8px;page-break-inside:avoid}
  @page{size:landscape;margin:12mm}
}

/* reduced motion */
[data-motion=reduced] *,[data-motion=reduced] *::before,[data-motion=reduced] *::after{animation:none!important;transition:none!important}
@media (prefers-reduced-motion:reduce){[data-motion=auto] *{animation:none!important;transition:none!important}}

/* responsive */
@media (max-width:1100px){
  .today,.player,.hunt,.ticket{grid-template-columns:1fr}
  .lab{grid-template-columns:1fr}
  .weeks{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .app{grid-template-columns:1fr;grid-template-rows:1fr auto}
  .side{position:fixed;inset:0 25% 0 0;z-index:70;transform:translateX(-105%);transition:transform .25s;box-shadow:0 0 40px rgba(0,0,0,.25)}
  .side.open{transform:none}
  .menu-btn{display:inline-flex}
  .top{padding:0 12px;min-height:60px}
  .top .tools .tbtn .lbl{display:none}
  .content{padding:16px 16px 32px}
  h1{font-size:24px}
  .tabs{display:grid;grid-template-columns:repeat(5,1fr);min-height:68px;border-top:1px solid var(--border);background:var(--surface)}
  .tabs a,.tabs button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:12.5px;color:var(--muted);text-decoration:none;font-weight:500;border:0;background:none}
  .tabs .on{color:var(--teal);font-weight:700}
  .next{grid-template-columns:1fr}.next .pic{min-height:150px;order:-1}
  .weeks{grid-template-columns:1fr 1fr}
  .grid2,.grid3{grid-template-columns:1fr}
  .auth{grid-template-columns:1fr}.auth .art{min-height:220px}.auth .art .quote{display:none}
  .frame{height:480px}
  .scene{padding:16px 16px 92px}
  .scene.coach{grid-template-columns:1fr 1.2fr;padding:0 12px 92px 0}
  .scene.coach h2{font-size:20px}
  .caption{font-size:14px;padding:8px 10px;left:8px;right:8px;bottom:8px}
  .scene .vs{grid-template-columns:1fr 1fr;gap:8px}.scene .vs>div{padding:10px}.scene .vs li{font-size:13px}
  .scene .panel,.scene .tk{padding:12px}
  .scene .items li{padding:6px 10px;font-size:14px;margin-top:6px}
  .scene .flow span{padding:6px 10px;font-size:13px}
  .scene pre{font-size:12px;padding:10px}
  .stage{aspect-ratio:4/5}
  .cert{padding:28px 18px;aspect-ratio:auto;outline-offset:-16px}.cert h1{font-size:26px}.cert .nm{font-size:24px}
}
.scrim{display:none}
@media (max-width:900px){.scrim.open{display:block;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:60}}
@media (max-width:640px){.tabbar button{padding:0 10px}.mod .mbar{display:none}.mod{gap:12px}.mod .pill{white-space:nowrap}}
.dim{opacity:.7}
.si{width:36px;height:36px;border-radius:9px;display:grid;place-items:center;flex:none}
.linkbox{font-family:var(--mono);font-size:14px;background:var(--sand);border:1px dashed var(--line);border-radius:var(--r);padding:12px;word-break:break-all;user-select:all}
.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}
.tbl .acts{justify-content:flex-end}
.tbl.stk .cl{display:none}
.input[readonly]{background:var(--sand);color:var(--muted)}
@media (max-width:720px){
  .tbl.stk thead{display:none}
  .tbl.stk,.tbl.stk tbody{display:block}
  .tbl.stk tr{display:flex;flex-wrap:wrap;align-items:center;gap:6px 16px;padding:14px 16px;border-bottom:1px solid var(--border)}
  .tbl.stk tr:last-child{border-bottom:0}
  .tbl.stk td{display:block;padding:0;border:0}
  .tbl.stk td:first-child,.tbl.stk td:last-child{flex-basis:100%}
  .tbl.stk td:last-child:not(:has(.btn)){display:none}
  .tbl.stk .cl{display:inline;color:var(--muted)}
  .tbl.stk .acts{justify-content:flex-start;margin-left:-10px}
}