/* DSD George · Summitlane look: schwarz, Geist, weiße Pillen, Spektrum-Akzente, Federbewegung */
:root{
  --bg:#000;--bg2:#0a0a0c;--fg:#f5f5f7;--fg2:rgba(245,245,247,.74);--mut:rgba(245,245,247,.52);--mut2:rgba(245,245,247,.36);
  --line:rgba(255,255,255,.09);--line2:rgba(255,255,255,.16);--card:rgba(255,255,255,.045);--card2:rgba(255,255,255,.07);
  --pink:#ff8fb4;--coral:#ff8a5f;--amber:#ffb547;--lime:#d9e35a;--green:#4fd394;--blue:#6cb8ff;--violet:#9b8bff;--red:#ff6b5b;
  --ok:#4fd394;--bad:#ff6b5b;--warn:#ffb547;
  --c:#fff;
  --ease:cubic-bezier(.22,1,.36,1);--out:cubic-bezier(.16,1,.3,1);--in:cubic-bezier(.55,0,1,.45);--spring:cubic-bezier(.34,1.56,.64,1);
  --r:22px;--r2:16px;--gut:20px;--tabh:66px;--safe-b:env(safe-area-inset-bottom,0px);--safe-t:env(safe-area-inset-top,0px);
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 Geist,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,system-ui,sans-serif;letter-spacing:-.011em;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overflow-x:hidden}
[hidden]{display:none!important}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
:focus-visible{outline:2px solid #fff;outline-offset:3px;border-radius:10px}
.mono{font-family:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
h1,h2,h3{margin:0;font-weight:680;letter-spacing:-.045em;line-height:1.04}
h1{font-size:32px}h2{font-size:24px;letter-spacing:-.04em}h3{font-size:18px;letter-spacing:-.025em;font-weight:640}
p{margin:0}
.kick{font-family:"Geist Mono",ui-monospace,monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mut)}
.kick.c{color:var(--c)}
.i{width:1.15em;height:1.15em;flex:none;vertical-align:-.2em}
.li>.i{width:18px;height:18px;color:var(--mut)}
.mut{color:var(--mut)}.fg2{color:var(--fg2)}.sm{font-size:13.5px}.xs{font-size:12px}
.grain{position:fixed;inset:-50%;z-index:90;pointer-events:none;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ---------- Shell ---------- */
.shell{min-height:100vh;min-height:100dvh;display:flex}
.side{display:none}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.top{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:12px;height:calc(56px + var(--safe-t));padding:var(--safe-t) var(--gut) 0;background:rgba(0,0,0,.72);-webkit-backdrop-filter:saturate(1.6) blur(18px);backdrop-filter:saturate(1.6) blur(18px)}
.top .back{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--card2);border:0;flex:none;transition:transform .4s var(--spring),background .2s}
.top .back:active{transform:scale(.92)}
.top .back svg{width:20px;height:20px}
@media (max-width:899px){.top:has(.ttl:not(:empty)) .brand span{display:none}}
.top .ttl{flex:1;min-width:0;font-weight:640;font-size:16px;letter-spacing:-.025em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand{display:flex;align-items:center;gap:9px;font-weight:650;font-size:16px;letter-spacing:-.03em}
.brand svg{width:28px;height:28px}
.xp{display:flex;align-items:center;gap:6px;padding:7px 11px;border-radius:999px;background:rgba(155,139,255,.14);color:#c3b9ff;font-size:13px;font-weight:620;font-variant-numeric:tabular-nums;transition:transform .5s var(--spring)}
.xp.bump{transform:scale(1.18)}
.streak{display:flex;align-items:center;gap:5px;padding:7px 10px;border-radius:999px;background:rgba(255,181,71,.13);color:var(--amber);font-size:13px;font-weight:620}
.streak svg{width:14px;height:14px}
#view{flex:1;padding:6px var(--gut) calc(var(--tabh) + var(--safe-b) + 34px);max-width:820px;width:100%;margin:0 auto;outline:none}
#view.vin{animation:vin .42s var(--out) both}
@keyframes vin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.tabs{position:fixed;left:0;right:0;bottom:0;z-index:50;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));padding:8px 6px calc(8px + var(--safe-b));background:rgba(8,8,10,.9);-webkit-backdrop-filter:saturate(1.6) blur(18px);backdrop-filter:saturate(1.6) blur(18px);box-shadow:0 -1px 0 var(--line)}
.tabs a{display:flex;flex-direction:column;align-items:center;gap:3px;padding:4px 2px;font-size:10.5px;color:var(--mut);transition:color .2s}
.tabs a svg{width:22px;height:22px;transition:transform .45s var(--spring)}
.tabs a.on{color:#fff}
.tabs a.on svg{transform:translateY(-1px) scale(1.08)}
body.kb .tabs{display:none}
@media (min-width:900px){
  .side{display:flex;flex-direction:column;gap:4px;position:sticky;top:0;height:100vh;width:236px;flex:none;padding:22px 14px;box-shadow:1px 0 0 var(--line)}
  .side .brand{padding:6px 10px 18px}
  .side a{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:14px;color:var(--fg2);font-size:15px;font-weight:540;transition:background .2s,color .2s}
  .side a svg{width:20px;height:20px}
  .side a:hover{background:var(--card);color:#fff}
  .side a.on{background:var(--card2);color:#fff}
  .side .foot{margin-top:auto;display:flex;flex-direction:column;gap:8px;padding:10px}
  .tabs{display:none}
  #view{padding:18px 40px 60px}
  .top .brand{display:none}
  h1{font-size:40px}
}

/* ---------- Bausteine ---------- */
.stack{display:flex;flex-direction:column;gap:12px}
.stack.l{gap:20px}.stack.xl{gap:28px}
.row{display:flex;align-items:center;gap:12px}
.row.w{flex-wrap:wrap}
.sp{flex:1}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
@media (min-width:700px){.grid2.wide{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{position:relative;padding:16px;border-radius:var(--r);background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));box-shadow:inset 0 0 0 1px var(--line)}
.card.t{background:var(--card)}
.card.acc{background:linear-gradient(160deg,color-mix(in srgb,var(--c) 18%,transparent),color-mix(in srgb,var(--c) 4%,transparent));box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--c) 32%,transparent)}
.card.press{transition:transform .45s var(--spring),box-shadow .25s;cursor:pointer;display:block;color:inherit;text-align:left;border:0;width:100%;font:inherit}
.card.press:active{transform:scale(.975)}
@media (hover:hover){.card.press:hover{box-shadow:inset 0 0 0 1px var(--line2)}}
.tile,.card.press.tile{display:flex;flex-direction:column;gap:6px;min-height:118px}
.tile .ic{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 15%,transparent);color:var(--c);margin-bottom:4px}
.tile .ic svg{width:19px;height:19px}
.tile b{font-size:16px;font-weight:630;letter-spacing:-.025em}
.tile span{font-size:12.5px;line-height:1.35;color:var(--mut)}
.tile i{position:absolute;right:14px;top:14px;font-style:normal;font-family:"Geist Mono",monospace;font-size:10.5px;color:var(--mut2)}
.hero{display:flex;align-items:center;gap:14px;padding:18px;border-radius:24px;background:linear-gradient(135deg,var(--c1,#ff8fb4),var(--c2,#ff8a5f) 55%,var(--c3,#ffb547));color:#120b06;border:0;width:100%;text-align:left;font:inherit;cursor:pointer;transition:transform .45s var(--spring)}
.hero:active{transform:scale(.98)}
.hero .k{font-size:11.5px;font-weight:680;letter-spacing:.08em;text-transform:uppercase;opacity:.72}
.hero b{display:block;font-size:22px;font-weight:720;letter-spacing:-.04em;line-height:1.08;margin-top:3px}
.hero .go{width:48px;height:48px;border-radius:50%;background:#000;color:#fff;display:grid;place-items:center;flex:none}
.li{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:18px;background:var(--card);box-shadow:inset 0 0 0 1px var(--line);width:100%;border:0;text-align:left;color:inherit;font:inherit;transition:transform .4s var(--spring),background .2s}
button.li:active,a.li:active{transform:scale(.98)}
.li .dot{width:10px;height:10px;border-radius:50%;background:var(--c);flex:none}
.li .t{font-size:15px;font-weight:580;letter-spacing:-.02em}
.li .s{font-size:12.5px;color:var(--mut)}
.li.done{opacity:.5}
.li.now{background:color-mix(in srgb,var(--c) 9%,transparent);box-shadow:inset 0 0 0 1.5px var(--c)}

/* Buttons */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:9px;height:52px;padding:0 24px;border-radius:999px;border:0;background:#fff;color:#000;font-weight:630;font-size:15.5px;letter-spacing:-.015em;transition:transform .45s var(--spring),opacity .2s,background .2s;white-space:nowrap;isolation:isolate}
.btn:active{transform:scale(.96)}
.btn svg{width:18px;height:18px}
.btn.full{width:100%}
.btn.ghost{background:rgba(255,255,255,.07);color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.22)}
.btn.acc{background:var(--c);color:#000}
.btn.sm{height:40px;padding:0 16px;font-size:14px}
.btn.xs{height:34px;padding:0 13px;font-size:13px}
.btn.icon{width:52px;padding:0}
.btn.icon.sm{width:40px}
.btn[disabled]{opacity:.4;pointer-events:none}
.btn .spin{width:16px;height:16px;border-radius:50%;border:2px solid rgba(0,0,0,.2);border-top-color:currentColor;animation:rot .8s linear infinite}
@keyframes rot{to{transform:rotate(360deg)}}
@media (hover:hover){.btn:not(.ghost):not(.acc):hover::before{content:"";position:absolute;inset:-2px;z-index:-1;border-radius:inherit;background:conic-gradient(from var(--a,0deg),#ff8fb4,#ff8a5f,#ffb547,#d9e35a,#4fd394,#6cb8ff,#9b8bff,#ff8fb4);filter:blur(8px);opacity:.8;animation:spinA 2.4s linear infinite}}
@property --a{syntax:"<angle>";initial-value:0deg;inherits:false}
@keyframes spinA{to{--a:360deg}}
.chip{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 13px;border-radius:999px;background:var(--card2);box-shadow:inset 0 0 0 1px var(--line);font-size:13px;font-weight:540;border:0;color:var(--fg2);transition:background .2s,color .2s,transform .4s var(--spring)}
.chip:active{transform:scale(.95)}
.chip.on{background:#fff;color:#000;box-shadow:none}
.chips{display:flex;flex-wrap:wrap;gap:7px}
.tag{display:inline-block;font-family:"Geist Mono",monospace;font-size:10.5px;letter-spacing:.05em;padding:3px 8px;border-radius:7px;background:var(--card2);color:var(--fg2)}
.badge{display:inline-flex;align-items:center;justify-content:center;min-width:22px;height:22px;padding:0 7px;border-radius:999px;font-size:12px;font-weight:650;background:var(--c);color:#000}
.seg{display:flex;padding:4px;border-radius:999px;background:var(--card2);gap:2px}
.seg button{flex:1;height:36px;border-radius:999px;border:0;background:none;color:var(--mut);font-size:13.5px;font-weight:580;transition:background .25s,color .25s}
.seg button.on{background:#fff;color:#000}

/* Formulare */
.inp,.ta{width:100%;background:rgba(255,255,255,.05);border:1px solid var(--line2);border-radius:16px;padding:13px 15px;font-size:16px;color:#fff;outline:none;transition:border-color .2s,box-shadow .2s;-webkit-appearance:none;appearance:none}
.ta{min-height:120px;resize:vertical;line-height:1.55}
.inp:focus,.ta:focus{border-color:rgba(255,255,255,.5);box-shadow:0 0 0 4px rgba(255,255,255,.07)}
.ta.big{min-height:60vh;font-size:16.5px;line-height:1.65}
label.lbl{display:block;font-size:13px;font-weight:560;color:var(--fg2);margin-bottom:7px}

/* Fortschritt */
.bar{height:8px;border-radius:6px;background:rgba(255,255,255,.08);overflow:hidden}
.bar>i{display:block;height:100%;border-radius:6px;background:var(--c);transform-origin:0 50%;transition:width .8s var(--out)}
.steps{display:flex;gap:4px}
.steps i{flex:1;height:4px;border-radius:3px;background:rgba(255,255,255,.12)}
.steps i.on{background:var(--c)}
.steps i.done{background:var(--c);opacity:.5}
.big-num{font-family:"Geist Mono",monospace;font-weight:500;letter-spacing:-.04em;line-height:.95}

/* Sprechen */
.orb{position:relative;width:180px;height:180px;margin:0 auto;display:grid;place-items:center;--lvl:0}
.orb::before{content:"";position:absolute;inset:0;border-radius:50%;background:conic-gradient(from 200deg,#ff8fb4,#ff8a5f,#ffb547,#4fd394,#6cb8ff,#9b8bff,#ff8fb4);filter:blur(26px);opacity:calc(.25 + var(--lvl) * .6);transform:scale(calc(.85 + var(--lvl) * .3));transition:opacity .12s,transform .12s;animation:orbspin 8s linear infinite}
.orb::after{content:"";position:absolute;inset:26px;border-radius:50%;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.22)}
.orb.idle::before{opacity:.18}
@keyframes orbspin{to{rotate:360deg}}
.orb .mascot{position:relative;z-index:1;width:92px;height:92px}
.rec{width:76px;height:76px;border-radius:50%;border:0;background:#fff;display:grid;place-items:center;transition:transform .45s var(--spring),box-shadow .3s;box-shadow:0 0 0 0 rgba(255,143,180,0)}
.rec:active{transform:scale(.92)}
.rec .r{width:26px;height:26px;border-radius:50%;background:#e5484d;transition:border-radius .3s var(--ease),width .3s,height .3s}
.rec.on{box-shadow:0 0 0 8px rgba(255,143,180,.2),0 0 46px rgba(255,143,180,.55)}
.rec.on .r{border-radius:7px;width:24px;height:24px}
.rec svg{width:26px;height:26px;color:#000}
.live{min-height:70px;padding:13px 15px;border-radius:18px;background:rgba(0,0,0,.4);box-shadow:inset 0 0 0 1px var(--line);font-size:15px;line-height:1.5;color:var(--fg2)}
.live i{color:var(--mut2);font-style:normal}
.timer{font-family:"Geist Mono",monospace;font-size:34px;font-weight:500;letter-spacing:-.02em;text-align:center;font-variant-numeric:tabular-nums}
.timer small{font-size:15px;color:var(--mut)}
.timer.warn{color:var(--amber)}.timer.over{color:var(--red)}

/* Chat */
.bub{max-width:88%;padding:12px 14px;font-size:15px;line-height:1.45;border-radius:18px}
.bub.q{align-self:flex-start;background:var(--card2);border-bottom-left-radius:6px}
.bub.a{align-self:flex-end;background:#1a1a20;box-shadow:inset 0 0 0 1px var(--line2);border-bottom-right-radius:6px;color:var(--fg2)}
.bub .say{display:inline-flex;margin-left:6px;vertical-align:middle;opacity:.7}

/* Feedback */
.fb{display:flex;flex-direction:column;gap:12px}
.fb .sec{padding:15px;border-radius:20px;background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.018));box-shadow:inset 0 0 0 1px var(--line)}
.fb .sec.good{background:linear-gradient(160deg,rgba(79,211,148,.14),rgba(79,211,148,.03));box-shadow:inset 0 0 0 1px rgba(79,211,148,.3)}
.fb .h{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px}
.fb .txt{font-size:15.5px;line-height:1.6}
del{color:#ff8a7a;text-decoration-color:rgba(255,138,122,.8)}
ins{text-decoration:none;color:var(--green);background:rgba(79,211,148,.13);border-radius:4px;padding:0 3px}
mark.err{background:rgba(255,107,91,.16);color:#ffb3a8;border-radius:4px;padding:0 2px;box-shadow:inset 0 -2px 0 rgba(255,107,91,.6)}
.err-it{padding:11px 13px;border-radius:14px;background:rgba(255,255,255,.04);display:flex;flex-direction:column;gap:5px}
.err-it .ty{font-family:"Geist Mono",monospace;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--c)}
.err-it .fx{font-size:14.5px}
.err-it .rg{font-size:13.5px;line-height:1.45;color:var(--fg2)}
.crit{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 12px;align-items:center;font-size:14px}
.pts{display:flex;gap:3px}
.pts span{width:22px;height:22px;border-radius:7px;display:grid;place-items:center;font-family:"Geist Mono",monospace;font-size:11.5px;background:rgba(255,255,255,.06);color:var(--mut2)}
.pts span.p3{background:var(--green);color:#000;font-weight:650}
.pts span.p2{background:var(--amber);color:#000;font-weight:650}
.pts span.p1{background:var(--coral);color:#000;font-weight:650}
.pts span.p0{background:var(--red);color:#000;font-weight:650}
.lvl{display:inline-flex;align-items:center;height:28px;padding:0 11px;border-radius:999px;font-weight:680;font-size:13.5px;background:var(--c);color:#000}
.md p{margin:0 0 10px}.md p:last-child{margin:0}
.md ul,.md ol{margin:4px 0 10px;padding-left:20px}.md li{margin:3px 0}
.md h4{margin:14px 0 6px;font-size:15px;letter-spacing:-.02em}
.md strong{font-weight:640;color:#fff}
.hint{padding:12px 14px;border-radius:16px;background:rgba(255,181,71,.08);box-shadow:inset 0 0 0 1px rgba(255,181,71,.28);font-size:14px;line-height:1.45}
.thinking{display:flex;align-items:center;gap:12px;color:var(--mut);font-size:14px}
.thinking .dots{display:flex;gap:4px}
.thinking .dots i{width:6px;height:6px;border-radius:50%;background:currentColor;animation:bl 1.2s var(--ease) infinite}
.thinking .dots i:nth-child(2){animation-delay:.15s}.thinking .dots i:nth-child(3){animation-delay:.3s}
@keyframes bl{0%,80%,100%{opacity:.2;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}
.cursor::after{content:"";display:inline-block;width:2px;height:1em;margin-left:2px;vertical-align:-2px;background:currentColor;animation:caret .8s steps(1) infinite}
@keyframes caret{50%{opacity:0}}

/* Multiple Choice, Lücken */
.opts{display:flex;flex-direction:column;gap:8px}
.opt{display:flex;align-items:flex-start;gap:12px;padding:13px 14px;border-radius:16px;background:var(--card);box-shadow:inset 0 0 0 1px var(--line);text-align:left;border:0;color:inherit;font:inherit;font-size:15px;line-height:1.4;width:100%;transition:transform .35s var(--spring),background .2s,box-shadow .2s}
.opt:active{transform:scale(.985)}
.opt .L{flex:none;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-family:"Geist Mono",monospace;font-size:12.5px;font-weight:600;background:var(--card2)}
.opt.sel{box-shadow:inset 0 0 0 1.5px #fff;background:rgba(255,255,255,.08)}
.opt.sel .L{background:#fff;color:#000}
.opt.ok{box-shadow:inset 0 0 0 1.5px var(--green);background:rgba(79,211,148,.1)}
.opt.ok .L{background:var(--green);color:#000}
.opt.no{box-shadow:inset 0 0 0 1.5px var(--red);background:rgba(255,107,91,.1)}
.opt.no .L{background:var(--red);color:#000}
.opt[disabled]{pointer-events:none}
.grid-ans{display:grid;gap:6px}
.grid-ans .cell{height:40px;border-radius:11px;border:0;background:var(--card);box-shadow:inset 0 0 0 1px var(--line2);font-family:"Geist Mono",monospace;font-size:13px;color:var(--fg2);transition:background .2s,transform .3s var(--spring)}
.grid-ans .cell.sel{background:#fff;color:#000;box-shadow:none}
.grid-ans .cell.ok{background:var(--green);color:#000}
.grid-ans .cell.no{background:var(--red);color:#000}
.gap{display:inline-block;min-width:70px;padding:0 6px;margin:0 2px;border:0;border-bottom:2px dashed var(--amber);background:rgba(255,181,71,.08);border-radius:6px 6px 0 0;color:#fff;font:inherit;text-align:center;outline:none}
.gap.ok{border-bottom-color:var(--green);background:rgba(79,211,148,.12)}
.gap.no{border-bottom-color:var(--red);background:rgba(255,107,91,.12)}

/* Papier (Prüfungstexte, Grafiken, Folien) */
.paper{background:#fbfaf7;color:#16161a;border-radius:16px;padding:20px 20px 18px;font-family:Georgia,"Times New Roman",serif;font-size:16px;line-height:1.6;box-shadow:0 30px 60px -30px rgba(0,0,0,.9)}
.paper h3{font-family:Geist,system-ui,sans-serif;font-size:19px;letter-spacing:-.02em;color:#111;margin-bottom:2px}
.paper .by{font-family:Geist,system-ui,sans-serif;font-size:13px;color:#666;margin-bottom:12px}
.paper p{margin:0 0 11px}
.paper .src{font-family:Geist,system-ui,sans-serif;font-size:12px;color:#777;margin-top:8px}
.paper .tw{cursor:pointer;border-radius:3px}
.paper .tw:hover{background:rgba(255,181,71,.25)}
.chart{background:#fff;color:#1a1a1a;border-radius:14px;padding:16px 16px 12px;font-family:Geist,system-ui,sans-serif}
.chart .ct{font-weight:680;font-size:15px;letter-spacing:-.02em;margin-bottom:2px}
.chart .cs{font-size:12px;color:#666;margin-bottom:10px}
.chart svg{width:100%;height:auto;display:block}
.chart .cq{font-size:11px;color:#777;margin-top:8px;line-height:1.35}
.slide{aspect-ratio:16/9;background:#fbfaf7;color:#141414;border-radius:14px;padding:5.5% 6%;display:flex;flex-direction:column;font-family:Geist,system-ui,sans-serif;box-shadow:0 30px 60px -30px rgba(0,0,0,.9);overflow:hidden;container-type:inline-size}
.slide .sn{font-family:"Geist Mono",monospace;font-size:2.2cqw;letter-spacing:.14em;color:#999}
.slide .st{font-size:5cqw;font-weight:720;letter-spacing:-.04em;line-height:1.05;margin:1.2cqw 0 2.4cqw}
.slide ul{margin:0;padding-left:3.4cqw;font-size:2.9cqw;line-height:1.42}
.slide li{margin:.7cqw 0}

/* Overlays */
.sheet-bg{position:fixed;inset:0;z-index:80;background:rgba(0,0,0,.6);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);opacity:0;transition:opacity .3s var(--ease)}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:81;max-height:92vh;overflow:auto;overscroll-behavior:contain;padding:12px 20px calc(24px + var(--safe-b));border-radius:26px 26px 0 0;background:#111114;box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 -30px 80px rgba(0,0,0,.6);transform:translateY(100%);transition:transform .5s var(--out)}
.sheet .grab{width:40px;height:5px;border-radius:3px;background:rgba(255,255,255,.25);margin:0 auto 14px}
.sheet-bg.open{opacity:1}.sheet.open{transform:none}
.sheet.closing{transform:translateY(100%);transition:transform .32s var(--in)}
@media (min-width:900px){.sheet{left:50%;right:auto;bottom:auto;top:50%;width:min(640px,92vw);border-radius:26px;transform:translate(-50%,-46%) scale(.97);opacity:0;transition:transform .45s var(--out),opacity .3s}.sheet.open{transform:translate(-50%,-50%);opacity:1}.sheet.closing{transform:translate(-50%,-46%) scale(.97);opacity:0;transition:transform .3s var(--in),opacity .25s}.sheet .grab{display:none}}
.toast{position:fixed;left:50%;bottom:calc(var(--tabh) + var(--safe-b) + 16px);z-index:95;transform:translate(-50%,20px);opacity:0;padding:12px 18px;border-radius:999px;background:#fff;color:#000;font-weight:600;font-size:14px;box-shadow:0 20px 40px rgba(0,0,0,.5);transition:transform .5s var(--spring),opacity .25s;white-space:nowrap;max-width:92vw;overflow:hidden;text-overflow:ellipsis}
.toast.on{transform:translate(-50%,0);opacity:1}
.xpfly{position:fixed;z-index:96;pointer-events:none;font-family:"Geist Mono",monospace;font-weight:600;font-size:18px;color:#c3b9ff;animation:fly 1.1s var(--out) forwards}
@keyframes fly{from{opacity:0;transform:translateY(10px) scale(.8)}20%{opacity:1;transform:translateY(0) scale(1.1)}to{opacity:0;transform:translateY(-60px) scale(1)}}
.shake{animation:shake .45s var(--ease)}
@keyframes shake{20%{transform:translateX(-6px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(3px)}}
.pop{animation:pop .5s var(--spring)}
@keyframes pop{from{transform:scale(.85);opacity:0}to{transform:none;opacity:1}}
.stagger>*{animation:vin .5s var(--out) both}
.stagger>*:nth-child(2){animation-delay:.04s}.stagger>*:nth-child(3){animation-delay:.08s}.stagger>*:nth-child(4){animation-delay:.12s}.stagger>*:nth-child(5){animation-delay:.16s}.stagger>*:nth-child(6){animation-delay:.2s}.stagger>*:nth-child(7){animation-delay:.24s}.stagger>*:nth-child(8){animation-delay:.28s}.stagger>*:nth-child(n+9){animation-delay:.32s}
.mascot{display:block}
.mascot .eye{transition:transform .25s var(--ease)}
.mascot.blink .lid{animation:blink 4.5s infinite}
@keyframes blink{0%,96%,100%{transform:scaleY(0)}98%{transform:scaleY(1)}}
.mascot.hop{animation:hop .7s var(--spring)}
@keyframes hop{35%{transform:translateY(-12px)}70%{transform:translateY(2px)}}
.gate{min-height:100vh;display:grid;place-items:center;padding:24px}
.flip{perspective:1200px}
.fcard{position:relative;min-height:220px;transform-style:preserve-3d;transition:transform .6s var(--out)}
.fcard.on{transform:rotateY(180deg)}
.fcard>div{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;justify-content:center;gap:10px;padding:22px;border-radius:var(--r);background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));box-shadow:inset 0 0 0 1px var(--line2)}
.fcard>div.b{transform:rotateY(180deg)}
.vid{position:relative;border-radius:22px;overflow:hidden;aspect-ratio:16/10;background:radial-gradient(90% 90% at 70% 30%,#24183a,#0b0b10 70%);box-shadow:inset 0 0 0 1px var(--line)}
.vid .scene{position:absolute;inset:0;padding:22px;display:flex;flex-direction:column;gap:10px}
.vid .sub{position:absolute;left:0;right:0;bottom:0;padding:10px 16px 14px;background:linear-gradient(0deg,rgba(0,0,0,.85),transparent);font-size:14px;line-height:1.4}
.vid .pb{position:absolute;left:0;bottom:0;height:3px;background:var(--lime);transition:width .3s linear}
.kin{opacity:0;transform:translateY(14px);animation:vin .6s var(--out) forwards}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
@media (max-width:380px){h1{font-size:28px}.grid3{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* Zoom für Prüfungsseiten */
.zoom{position:fixed;inset:0;z-index:95;background:#0b0b0c;opacity:0;transition:opacity .25s var(--out)}
.zoom.on{opacity:1}
.zoom .zw{position:absolute;inset:0;overflow:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
.zoom img{display:block;width:max(980px,100%);max-width:none;background:#fff;transition:width .3s var(--out)}
.zoom img.fit{width:100%}
.zoom .zx{position:fixed;top:calc(12px + var(--safe-t,0px));right:12px;z-index:2;width:44px;height:44px;border-radius:50%;border:0;background:rgba(0,0,0,.72);color:#fff;display:grid;place-items:center;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.zoom .zx svg{width:20px;height:20px}
.page-img{width:100%;border-radius:12px;background:#fff;display:block;cursor:zoom-in}

/* Größere Tippflächen ohne größere Optik */
.chip{position:relative}
.chip::before{content:"";position:absolute;inset:-5px -2px}
.seg button{position:relative}
.seg button::before{content:"";position:absolute;inset:-4px 0}
/* Telefon, Unterseiten: Titel bekommt Platz */
@media (max-width:899px){
  .top{gap:10px}
  .top:has(button.back:not([hidden])) .streak,.top:has(button.back:not([hidden])) a[href="#/mehr"]{display:none!important}
}