/* =====================================================================
   ЛОГИКА 1–4 — оформление. Та же система, что в уроке «Логика с нуля»:
   плоские контрастные цвета, толстая обводка, жёсткая тень, крупные
   сжатые заголовки + рукописные пометки Caveat.  Цвета — здесь, вверху.
   ===================================================================== */
:root{
  --ink:#151821; --paper:#FFF8EC; --card:#FFFFFF; --line:#151821;
  --blue:#2F5BFF; --green:#12B886; --pink:#FF4F7B; --red:#F03E3E; --orange:#FF8A1F;
  --purple:#7B4AE2; --teal:#0E9AA8; --yellow:#FFD23F; --mute:#596073;
  --g:#FFD23F; --gink:#151821;           /* цвет класса — задаётся на странице класса */
  --f-disp:Bahnschrift,"Oswald","Segoe UI",Arial,sans-serif;
  --f-body:Bahnschrift,"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
  --f-hand:Caveat,"Segoe Print",cursive;
  --f-mono:Consolas,"Courier New",monospace;
  --r:16px; --sh:6px 6px 0 var(--line);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:18px;line-height:1.45;min-height:100vh;overflow-x:hidden}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;touch-action:manipulation}
a{color:inherit}
img,svg{max-width:100%}
body:not(.lang-kz) .kz{display:none!important}
body.lang-kz .ru{display:none!important}
::selection{background:var(--yellow)}

/* бумажная фактура */
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.35;
  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'/%3E%3CfeColorMatrix values='0 0 0 0 0.08  0 0 0 0 0.07  0 0 0 0 0.05  0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ================= ТИПОГРАФИКА ================= */
h1,h2,h3,.disp{font-family:var(--f-disp);font-weight:700;font-variation-settings:"wdth" 75,"wght" 700;text-transform:uppercase;line-height:.95;letter-spacing:.005em}
h1{font-size:clamp(46px,8.5vw,118px)}
h2{font-size:clamp(32px,5vw,64px)}
h3{font-size:clamp(22px,2.6vw,32px);line-height:1}
.hand{font-family:var(--f-hand);font-weight:700;text-transform:none;letter-spacing:0;display:inline-block;transform:rotate(-3deg);line-height:1;position:relative}
h1 .hand,h2 .hand{font-size:1.08em}
.hand.u::after{content:"";position:absolute;left:-2%;right:-2%;bottom:-.12em;height:.22em;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 20' preserveAspectRatio='none'%3E%3Cpath d='M2 12 Q 30 2 60 11 T 120 10 T 198 8' fill='none' stroke='%23151821' stroke-width='5' stroke-linecap='round'/%3E%3C/svg%3E") center/100% 100% no-repeat}
.hnote{font-family:var(--f-hand);font-weight:700;font-size:clamp(22px,2.4vw,32px);line-height:1.05;transform:rotate(-2deg);display:inline-block}
.eyebrow{font-size:14px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--mute);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.tag{display:inline-block;background:var(--ink);color:var(--paper);padding:3px 10px;border-radius:6px;letter-spacing:.08em;font-size:13px;font-weight:700;text-transform:uppercase}
.lead{font-size:clamp(18px,1.8vw,23px);line-height:1.4;max-width:900px}
.mute{color:var(--mute)}
b,strong{font-weight:700}
mark{background:var(--yellow);color:var(--ink);padding:0 .15em;border-radius:3px}
.inl{display:inline-flex;vertical-align:middle;margin:0 4px}
.inl svg{width:30px;height:30px}

/* ================= КАРКАС СТРАНИЦЫ ================= */
.topbar{position:sticky;top:0;z-index:30;background:var(--ink);color:var(--paper);border-bottom:3px solid #000}
.topbar .in{max-width:1320px;margin:0 auto;display:flex;align-items:center;gap:12px;padding:8px 16px;flex-wrap:wrap}
.brand{font-family:var(--f-disp);font-weight:700;font-variation-settings:"wdth" 75;letter-spacing:.05em;text-transform:uppercase;font-size:20px;text-decoration:none;white-space:nowrap;display:flex;align-items:center;gap:8px}
.brand i{font-style:normal;color:var(--yellow)}
.brand .logo{width:30px;height:30px}
.gpills{display:flex;gap:6px}
.gpills a{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;font-family:var(--f-disp);font-weight:700;font-size:20px;text-decoration:none;border:2px solid #2A2F3E;color:#AEB4C6}
.gpills a.on{background:var(--g);color:var(--gink);border-color:var(--g)}
.tabs{display:flex;gap:4px;flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs a{padding:8px 12px;border-radius:9px;font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:#AEB4C6;white-space:nowrap;text-decoration:none;border:2px solid transparent}
.tabs a.on{color:#fff;border-color:var(--g)}
.lang-switch{display:flex;border:2px solid var(--paper);border-radius:9px;overflow:hidden;margin-left:auto}
.lang-switch button{padding:5px 11px;font-weight:700;font-size:14px}
.lang-switch button.on{background:var(--paper);color:var(--ink)}
main{position:relative;z-index:1}
.page{max-width:1320px;margin:0 auto;padding:28px 16px 80px}
.sec{margin:42px 0 0}
.sec>h2{margin-bottom:14px}
footer{position:relative;z-index:1;background:var(--ink);color:#AEB4C6;padding:28px 16px;font-size:15px}
footer .in{max-width:1320px;margin:0 auto;display:flex;gap:24px;flex-wrap:wrap;justify-content:space-between}
footer a{color:var(--paper)}

/* ================= БЛОКИ ================= */
.card{background:var(--card);border:3px solid var(--line);box-shadow:var(--sh);border-radius:var(--r);padding:18px}
.card.flat{box-shadow:none}
.card.dk{background:var(--ink);color:var(--paper);border-color:#000}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.auto{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.grow{flex:1}
.pill{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;border:3px solid var(--line);background:#fff;font-weight:700;font-size:15px}
.pill svg{height:26px;width:auto}
.btn{font-family:var(--f-disp);font-weight:700;text-transform:uppercase;letter-spacing:.03em;font-size:17px;padding:10px 18px;min-height:52px;min-width:52px;border:3px solid var(--ink);background:var(--paper);color:var(--ink);border-radius:12px;box-shadow:4px 4px 0 var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .08s,box-shadow .08s;text-decoration:none;font-variation-settings:"wdth" 85}
.btn:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--ink)}
.btn.y{background:var(--yellow)} .btn.g{background:var(--g);color:var(--gink)}
.btn.dk{background:var(--ink);color:var(--paper)}
.btn.sm{min-height:44px;padding:6px 13px;font-size:15px}
.btn[disabled]{opacity:.45;pointer-events:none}
.btns{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.k{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;opacity:.7;margin-bottom:6px}
#toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,140%);background:var(--ink);color:var(--paper);padding:12px 20px;border-radius:12px;border:3px solid #000;z-index:200;font-weight:700;max-width:min(92vw,620px);text-align:center;transition:transform .3s}
#toast.show{transform:translate(-50%,0)}

/* ================= ЗАДАНИЕ ================= */
.task{background:var(--card);border:3px solid var(--line);border-radius:20px;box-shadow:8px 8px 0 var(--line);padding:clamp(14px,2vw,24px);position:relative}
.task.shake{animation:shake .4s}
.task.solved{box-shadow:8px 8px 0 var(--green)}
.thead{margin-bottom:14px}
.tmeta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.tdir{background:var(--ink);color:var(--paper);padding:3px 10px;border-radius:6px;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.ttitle{font-family:var(--f-disp);font-weight:700;font-variation-settings:"wdth" 75;text-transform:uppercase;font-size:20px}
.tnum{font-family:var(--f-mono);font-weight:700;color:var(--mute)}
.lvl{display:inline-flex;gap:4px;margin-left:auto}
.lvl i{width:12px;height:12px;border-radius:50%;border:2px solid var(--ink);display:block}
.lvl i.on{background:var(--ink)}
.tq{display:flex;gap:12px;align-items:flex-start}
.say{flex:none;width:52px;height:52px;border-radius:50%;border:3px solid var(--ink);background:var(--yellow);display:grid;place-items:center;box-shadow:3px 3px 0 var(--ink)}
.say:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}
.qtext{font-size:clamp(19px,2vw,25px);line-height:1.35;font-weight:600;padding-top:8px}
.tbody{display:flex;flex-direction:column;gap:16px;align-items:center;padding:6px 0}
.tbody.locked{pointer-events:none}
.tbody.locked .keypad{opacity:.4}
.tfeed{min-height:8px;margin-top:12px}
.fb{border:3px solid var(--line);border-radius:14px;padding:12px 16px;font-size:18px;line-height:1.4;animation:rise .3s ease}
.fb.ok{background:#D3F9E8}.fb.err{background:#FFE0E8}.fb.hint{background:#FFF3BF}.fb.info{background:#EEF2FF}.fb.steps{background:var(--paper)}
.fb b{display:block;margin-bottom:2px}
.fb ol{margin:6px 0 10px 24px}.fb li{margin:6px 0}
.fb .btns{margin-top:6px}
.tbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:14px;border-top:3px dashed #D9D2C2;padding-top:14px}
.pulse{animation:pulse 1.1s ease infinite}
@keyframes pulse{50%{box-shadow:0 0 0 6px rgba(255,210,63,.8),4px 4px 0 var(--ink)}}
@keyframes shake{20%,60%{transform:translateX(-7px)}40%,80%{transform:translateX(7px)}}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes pop{0%{transform:scale(.6)}70%{transform:scale(1.12)}100%{transform:scale(1)}}
.pop{animation:pop .35s ease}
.hl{outline:5px solid var(--yellow)!important;outline-offset:2px;border-radius:10px}
.dim{opacity:.3}

/* варианты ответа */
.choices{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.choice{position:relative;min-width:84px;min-height:84px;padding:10px 14px;border:3px solid var(--line);border-radius:14px;background:#fff;box-shadow:4px 4px 0 var(--line);display:flex;align-items:center;justify-content:center;transition:transform .1s}
.choice .ltr{position:absolute;top:-12px;left:-10px;width:26px;height:26px;border-radius:50%;background:var(--ink);color:#fff;font-size:13px;font-weight:700;display:grid;place-items:center}
.choice.sel{background:#FFF3BF;transform:translateY(-3px);box-shadow:4px 7px 0 var(--line)}
.choice.good{background:#B2F2D6}.choice.bad{background:#FFC2D1;animation:shake .4s}
.bign{font-family:var(--f-disp);font-size:44px;font-variation-settings:"wdth" 80}

/* перетаскивание */
.pool{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;min-height:76px;padding:10px;border:3px dashed #CFC6B2;border-radius:16px;width:100%}
.chip{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:6px 10px;min-height:60px;min-width:60px;border:3px solid var(--line);border-radius:14px;background:#fff;font-weight:700;font-size:17px;cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none;box-shadow:3px 3px 0 var(--line)}
.chip.pic{padding:4px}
.chip.sel{outline:5px solid var(--yellow);outline-offset:2px}
.chip.dragging{opacity:.3}
.chip.ghost{position:fixed;z-index:999;pointer-events:none;opacity:.95;transform:rotate(-3deg) scale(1.06);box-shadow:8px 8px 0 rgba(0,0,0,.35)}
.chip.bad{border-color:var(--red);box-shadow:3px 3px 0 var(--red);animation:shake .4s}
.chip.ok{background:#D3F9E8}
.chip.person svg{height:46px;width:auto}
.dz{border:3px dashed var(--line);border-radius:14px;padding:8px;min-height:84px;display:flex;flex-wrap:wrap;gap:8px;align-content:flex-start;justify-content:center;background:rgba(255,255,255,.6);transition:background .15s}
.dz.over{background:#FFF3BF;border-style:solid}
.dzt{width:100%;font-weight:700;font-size:15px;text-transform:uppercase;letter-spacing:.05em;text-align:center}
.emo{font-family:"Segoe UI Emoji","Apple Color Emoji","Noto Color Emoji",sans-serif;line-height:1;display:inline-block}

/* — найди лишнее — */
.oddrow{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.oddit{border:3px solid var(--line);border-radius:18px;background:#fff;padding:12px;box-shadow:4px 4px 0 var(--line);display:flex;flex-direction:column;align-items:center;gap:4px;min-width:110px;min-height:120px;justify-content:center;transition:transform .12s}
.oddit.sel{background:#FFF3BF;transform:translateY(-4px)}
.oddit.good{background:#B2F2D6}.oddit.bad{background:#FFC2D1;animation:shake .4s}
.oddit .cap{font-family:var(--f-hand);font-size:24px;font-weight:700;min-height:26px;color:var(--blue)}

/* — разложи — */
.boxes{display:grid;grid-template-columns:1fr 1fr;gap:14px;width:100%}
.box{min-height:150px}
.zl{display:inline-flex;align-items:center;gap:8px}
.zl svg{width:34px;height:34px}
.sw{display:inline-block;width:26px;height:26px;border-radius:50%;border:3px solid var(--ink)}
.ttable{display:grid;grid-template-columns:auto 1fr 1fr;gap:8px;width:100%;max-width:720px}
.ttable .th{display:flex;align-items:center;justify-content:center;gap:6px;font-weight:700;font-size:15px;text-transform:uppercase}
.ttable .th svg{width:36px;height:36px}
.ttable .cell{min-height:110px}
.venn{position:relative;width:100%;max-width:760px;aspect-ratio:2/1}
.vbg{position:absolute;inset:0;width:100%;height:100%}
.va{fill:rgba(47,91,255,.10);stroke:var(--blue);stroke-width:5}
.vb{fill:rgba(255,138,31,.12);stroke:var(--orange);stroke-width:5}
.vlab{position:absolute;top:-6px;font-family:var(--f-hand);font-weight:700;font-size:30px;background:var(--paper);padding:0 8px;border-radius:8px}
.vlab.a{left:8%;color:var(--blue);transform:rotate(-4deg)}.vlab.b{right:8%;color:#C2550A;transform:rotate(3deg)}
.vz{position:absolute;border:none;background:transparent;min-height:0;padding:4px}
.vz.over{background:rgba(255,210,63,.35)}
.vennwrap{width:100%;display:flex;flex-direction:column;align-items:center;gap:12px}
.zA{left:4%;top:14%;width:32%;height:72%;border-radius:50% 0 0 50%}
.zAB{left:37%;top:10%;width:26%;height:80%;border-radius:40%}
.zB{right:4%;top:14%;width:32%;height:72%;border-radius:0 50% 50% 0}
.vz .chip svg{width:44px;height:44px}
.vout{width:100%;max-width:760px;min-height:84px}

/* — ряд фигур — */
.patrow{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;align-items:center}
.pit{width:86px;height:86px;border:3px solid transparent;border-radius:14px;display:grid;place-items:center;background:#fff}
.pit.g0{box-shadow:0 6px 0 -1px var(--blue)}.pit.g1{box-shadow:0 6px 0 -1px var(--orange)}
.pit.blank{border:3px dashed var(--line);background:#FFF3BF;font-family:var(--f-disp);font-size:44px;font-weight:700}
.pit.blank.filled{border-style:solid;background:#fff}
.pit.sel{border-color:var(--ink);background:#FFF3BF}.pit.good{background:#B2F2D6;border-color:var(--green)}.pit.bad{background:#FFC2D1;animation:shake .4s}

/* — числовой ряд — */
.numrow{display:flex;align-items:flex-end;justify-content:center;flex-wrap:wrap;gap:0;padding-top:46px}
.nc{min-width:76px;height:76px;padding:0 8px;border:3px solid var(--line);border-radius:14px;background:#fff;display:grid;place-items:center;font-family:var(--f-disp);font-size:38px;font-weight:700;box-shadow:3px 3px 0 var(--line)}
.nc.blank{background:#FFF3BF;padding:0}
.arc{width:44px;height:76px;position:relative}
.arc span{position:absolute;left:50%;top:-40px;transform:translateX(-50%);white-space:nowrap;font-family:var(--f-hand);font-weight:700;font-size:28px;color:var(--red);opacity:0;transition:opacity .4s}
.arc::before{content:"";position:absolute;left:-30px;right:-30px;top:-14px;height:30px;border:3px solid var(--red);border-bottom:none;border-radius:50% 50% 0 0;opacity:0;transition:opacity .4s}
.numrow.arcs .arc span,.numrow.arcs .arc::before{opacity:1}
.numf{min-width:76px;height:70px;border-radius:12px;border:none;background:transparent;font-family:var(--f-disp);font-size:38px;font-weight:700;color:var(--ink);display:grid;place-items:center;padding:0 8px}
.numf.empty .v{opacity:.35}
.numf.focus{outline:4px solid var(--blue);outline-offset:-4px}
.ansline .numf,.tri .numf{background:#FFF3BF;border:3px solid var(--line);height:64px}
.numf.good{background:#B2F2D6!important}.numf.bad{background:#FFC2D1!important;animation:shake .4s}
.keypad{display:grid;grid-template-columns:repeat(3,64px);gap:8px}
.keypad button{height:58px;border:3px solid var(--line);border-radius:12px;background:#fff;font-family:var(--f-disp);font-weight:700;font-size:26px;box-shadow:3px 3px 0 var(--line)}
.keypad button:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--line)}
.keypad button.ok{background:var(--yellow);font-size:20px}
.ansline{display:flex;align-items:center;gap:12px;font-family:var(--f-disp);font-weight:700;font-size:28px;text-transform:uppercase}

/* — аналогии — */
.analog{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}
.ap{width:118px;height:118px;border:3px solid var(--line);border-radius:16px;display:grid;place-items:center;background:#fff;box-shadow:3px 3px 0 var(--line)}
.ap.q{background:#FFF3BF;border-style:dashed;font-family:var(--f-disp);font-size:52px;font-weight:700}
.aa{font-size:38px;font-weight:700}
.asep{font-family:var(--f-hand);font-weight:700;font-size:28px;line-height:1;text-align:center;color:var(--purple);padding:0 10px;transform:rotate(-4deg)}
.anotes{display:flex;gap:18px;flex-wrap:wrap;justify-content:center;color:var(--red)}

/* — условия, расстановки — */
.clues{list-style:none;counter-reset:c;display:flex;flex-direction:column;gap:8px;width:100%;max-width:820px}
.clues li{counter-increment:c;position:relative;padding:10px 14px 10px 52px;border:3px solid var(--line);border-radius:12px;background:var(--paper);font-size:19px;font-weight:600}
.clues li::before{content:counter(c);position:absolute;left:10px;top:50%;transform:translateY(-50%);width:30px;height:30px;border-radius:50%;background:var(--ink);color:#fff;font-weight:700;font-size:15px;display:grid;place-items:center}
.clues li.bad{background:#FFC2D1;animation:shake .4s}.clues li.hl{background:#FFF3BF;outline:none!important}.clues li.okc{background:#D3F9E8}
.slots{display:flex;gap:10px;align-items:stretch;flex-wrap:wrap;justify-content:center;width:100%}
.slot{min-width:118px;min-height:96px;position:relative}
.slot>b{position:absolute;top:4px;left:8px;font-family:var(--f-disp);font-size:18px;color:#B6AE9B}
.slab{align-self:center;font-family:var(--f-hand);font-weight:700;font-size:24px;color:var(--purple);max-width:120px;line-height:1}
.slab.l{transform:rotate(-4deg)}.slab.r{transform:rotate(3deg)}
.kids{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.kid{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:18px}
.kid .slot{min-width:96px;min-height:82px}
.street{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.house{display:flex;flex-direction:column;align-items:center;gap:4px}
.house .hs{width:116px}
.house .slot{min-width:116px;min-height:78px}
.lgrid-wrap{width:100%;display:flex;justify-content:center}
.lgrid{border-collapse:separate;border-spacing:4px}
.lgrid th{font-weight:700;padding:2px 8px;font-size:16px}
.lgrid td{width:52px;height:46px;text-align:center;border:3px solid var(--line);border-radius:8px;background:#fff;font-size:26px;font-weight:700}
.lgrid td.y{background:#B2F2D6}.lgrid td.n{background:#FFE0E8;color:var(--red)}

/* — высказывания — */
.spic{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:12px;border:3px solid var(--line);border-radius:16px;background:var(--paper);max-width:760px}
.sit{display:grid;place-items:center;border-radius:12px;transition:opacity .2s}
.stlist{display:flex;flex-direction:column;gap:10px;width:100%;max-width:880px}
.stm{display:flex;gap:12px;align-items:center;justify-content:space-between;border:3px solid var(--line);border-radius:14px;padding:10px 12px;background:#fff;flex-wrap:wrap}
.stm.bad{background:#FFE0E8}.stm.good{background:#D3F9E8}
.stt{font-size:20px;font-weight:600;flex:1;min-width:220px}
.tf{display:flex;gap:6px}
.tf button{min-height:48px;padding:6px 14px;border:3px solid var(--line);border-radius:10px;font-weight:700;background:var(--paper);text-transform:uppercase;font-size:15px}
.tf button.on[data-v="1"]{background:var(--green);color:#fff}.tf button.on[data-v="0"]{background:var(--red);color:#fff}

/* — треугольники — */
.trirow{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.tri{position:relative;width:210px;height:236px}
.tri svg{position:absolute;left:0;top:0;width:210px;height:194px}
.tvs{font-family:var(--f-disp);font-weight:700;font-size:25px;text-anchor:middle;dominant-baseline:central;fill:var(--ink)}
.tvm{font-family:var(--f-disp);font-weight:700;font-size:44px;text-anchor:middle;dominant-baseline:central;fill:var(--blue)}
.tslot{position:absolute;left:50%;top:90px;transform:translateX(-50%)}
.tri .numf{min-width:74px;height:58px}
.tcalc{position:absolute;left:-20px;right:-20px;top:200px;text-align:center;font-family:var(--f-hand);font-weight:700;font-size:24px;color:var(--red);white-space:nowrap}
.tri.hl{outline:none!important}.tri.hl svg path{fill:#FFF3BF}

/* — знаки — */
.eqrow{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:center}
.en{font-family:var(--f-disp);font-weight:700;font-size:52px;min-width:40px;text-align:center}
.en.res{color:var(--blue)}
.eop{width:66px;height:66px;border:3px dashed var(--line);border-radius:12px;background:#FFF3BF;font-family:var(--f-disp);font-weight:700;font-size:42px}
.eop.set{border-style:solid;background:#fff}
.eqlive{font-size:20px;min-height:28px}

/* — матрица — */
.mgrid{display:grid;grid-template-columns:repeat(3,96px);gap:8px;padding:10px;border:3px solid var(--line);border-radius:16px;background:var(--paper)}
.mc{width:96px;height:96px;border:3px solid var(--line);border-radius:12px;background:#fff;display:grid;place-items:center;font-family:var(--f-disp);font-size:46px;font-weight:700}
.mc.q{background:#FFF3BF;border-style:dashed}.mc.q.good{background:#B2F2D6;border-style:solid}

/* — робот — */
.robot{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;align-items:flex-start;width:100%}
.rfield{--c:min(64px,calc((100vw - 90px)/var(--w)));position:relative;display:grid;grid-template-columns:repeat(var(--w),var(--c));grid-auto-rows:var(--c);border:3px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.rc{border-right:2px solid #E6DFCF;border-bottom:2px solid #E6DFCF}
.rc.rock{background:#4B5168;background-image:radial-gradient(circle at 30% 30%,#6B7189 0 18%,transparent 19%),radial-gradient(circle at 70% 65%,#3A3F52 0 22%,transparent 23%)}
.rc.trail{background:#FFF3BF}
.rstar,.rbot{position:absolute;left:0;top:0;width:var(--c);height:var(--c);padding:6px;transform:translate(calc(var(--x)*var(--c)),calc(var(--y)*var(--c)));transition:transform .24s}
.rbot.crash{animation:shake .4s;filter:drop-shadow(0 0 8px var(--red))}
.rbot.win{filter:drop-shadow(0 0 10px var(--green))}
.rside{display:flex;flex-direction:column;gap:12px;min-width:260px;max-width:420px;flex:1}
.rprog{border:3px solid var(--line);border-radius:14px;padding:10px;background:var(--paper);min-height:80px}
.pl{font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px}
.pcmds{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.pcmd{position:relative;min-width:46px;height:46px;border:3px solid var(--line);border-radius:10px;background:#fff;font-size:26px;font-weight:700;padding:0 6px}
.pcmd sub{font-size:14px;color:var(--red);font-weight:700}
.pcmd.sel{background:#FFF3BF;outline:4px solid var(--orange)}
.pcmd .x{position:absolute;top:-10px;right:-10px;width:22px;height:22px;border-radius:50%;background:var(--red);color:#fff;font-style:normal;font-size:15px;line-height:20px}
.plim{margin-left:auto;font-weight:700;color:var(--green)}.plim.over{color:var(--red)}
.rpad{display:flex;flex-wrap:wrap;gap:8px}
.rbtn{font-size:30px;min-width:62px}

/* — отражение — */
.mgrid2{--c:min(46px,calc((100vw - 80px)/var(--w)));position:relative;display:grid;grid-template-columns:repeat(var(--w),var(--c));grid-auto-rows:var(--c);border:3px solid var(--line);background:#fff}
.mcell{border:1px solid #D9D2C2}
.mcell.free{cursor:pointer;background:#fff}
.mcell.given{background-color:#F3EEE2}
.mcell.bad{outline:4px solid var(--red);outline-offset:-4px}
.mgrid2 .axis{position:absolute;background:var(--red);pointer-events:none}
.mgrid2.v .axis{left:calc(50% - 3px);top:-12px;bottom:-12px;width:6px}
.mgrid2.h .axis{top:calc(50% - 3px);left:-12px;right:-12px;height:6px}

/* — поворот — */
.rotsrc{display:flex;gap:18px;align-items:center;flex-wrap:wrap;justify-content:center}
.rs{width:170px;height:170px;display:grid;place-items:center;border:3px dashed var(--line);border-radius:16px;background:var(--paper)}
.rs svg{transition:transform .5s}
.rarrow{font-size:46px;font-weight:700;color:var(--purple);display:flex;align-items:center;gap:6px}
.rarrow b{font-family:var(--f-disp);font-size:34px}

/* — силуэт — */
.pstage{position:relative;width:100%;display:flex;flex-direction:column;align-items:center;gap:22px;user-select:none;-webkit-user-select:none;touch-action:none}
.pboard{position:relative}
.pboard i{position:absolute;width:var(--s);height:var(--s);background:#D9D2C2;border:2px dashed #A79F8B}
.ptray{width:100%;border:3px dashed #CFC6B2;border-radius:16px;min-height:120px}
.piece{position:absolute;cursor:grab;touch-action:none;z-index:2;transition:left .2s,top .2s}
.piece.lift{z-index:5;transition:none;filter:drop-shadow(6px 6px 0 rgba(0,0,0,.35))}
.piece i{position:absolute;width:var(--s);height:var(--s);background:var(--c);border:3px solid var(--line)}

/* — палочки — */
svg.sticks{width:100%;max-width:640px;background:#1B2030;border-radius:16px;border:3px solid #000;padding:6px}
.stk .hit{stroke:transparent;stroke-width:26;stroke-linecap:round;cursor:pointer}
.stk .st{stroke:transparent;stroke-width:8;stroke-linecap:round;pointer-events:none}
.stk .hd{fill:transparent;pointer-events:none}
.stk.on .st{stroke:#F2C886}.stk.on .hd{fill:#F03E3E}
.stk.slot .st{stroke:rgba(255,255,255,.25);stroke-dasharray:4 6}
.stk.held .st{stroke:var(--yellow);filter:drop-shadow(0 0 6px var(--yellow))}
.stk.moved .st{stroke:#7CF0C0}
.eqs{stroke:#F2C886;stroke-width:8;stroke-linecap:round}

/* — 3D-куб — */
.cubewrap{display:flex;gap:28px;flex-wrap:wrap;justify-content:center;align-items:center}
.cubebox{display:flex;flex-direction:column;align-items:center;gap:12px}
.scene{width:240px;height:240px;perspective:900px;display:grid;place-items:center}
.cube{width:130px;height:130px;position:relative;transform-style:preserve-3d}
.face{position:absolute;inset:0;border:4px solid var(--line);border-radius:10px;background:var(--paper);display:grid;place-items:center;backface-visibility:hidden}
.face.fF{transform:translateZ(65px)}.face.fB{transform:rotateY(180deg) translateZ(65px)}
.face.fR{transform:rotateY(90deg) translateZ(65px);background:#F1E9D6}.face.fL{transform:rotateY(-90deg) translateZ(65px)}
.face.fU{transform:rotateX(90deg) translateZ(65px);background:#FFFDF6}.face.fD{transform:rotateX(-90deg) translateZ(65px)}
.view{width:130px;height:130px;position:relative;transform-style:preserve-3d;transform:rotateX(-24deg) rotateY(-34deg)}
.ctrl{display:flex;gap:6px;align-items:center;flex-wrap:wrap;justify-content:center}
.netbox{text-align:center}
.net{display:grid;grid-template-columns:repeat(4,62px);grid-template-rows:repeat(3,62px);gap:3px}
.nf{border:3px solid var(--line);border-radius:8px;background:#fff;display:grid;place-items:center;position:relative}
.nf span{position:absolute;top:1px;left:4px;font-size:10px;font-weight:700;text-transform:uppercase;color:var(--mute)}
.nU{grid-column:2;grid-row:1}.nL{grid-column:1;grid-row:2}.nF{grid-column:2;grid-row:2;background:#FFF3BF}.nR{grid-column:3;grid-row:2}.nB{grid-column:4;grid-row:2}.nD{grid-column:2;grid-row:3}

/* — кубики — */
.isobox{display:flex;flex-direction:column;align-items:center;gap:10px}
.isopic svg{max-width:min(420px,86vw);height:auto}
.planwrap{text-align:center}
.plan{display:grid;grid-template-columns:repeat(var(--x),64px);gap:4px;border-bottom:7px solid var(--green);border-right:7px solid var(--orange);padding:4px;background:var(--paper)}
.pc{height:64px;border:3px solid var(--line);border-radius:10px;background:#fff;font-family:var(--f-disp);font-weight:700;font-size:32px}
.pc.bad{background:#FFC2D1}

/* — судоку — */
.sudoku{display:flex;gap:18px;flex-wrap:wrap;justify-content:center;align-items:center}
.sgrid{display:grid;grid-template-columns:repeat(var(--n),76px);border:4px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.sgrid.n6{grid-template-columns:repeat(6,58px)}
.sc{height:76px;border:1.5px solid #CFC6B2;display:grid;place-items:center;background:#fff}
.sgrid.n6 .sc{height:58px}
.sc.given{background:#F3EEE2}
.sc.br{border-right:4px solid var(--line)}.sc.bb{border-bottom:4px solid var(--line)}
.sc.bad{background:#FFC2D1}
.sc.over{background:#FFF3BF}
.spal{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;max-width:340px}
.spal .erase{font-size:26px}

/* — комбинаторика — */
.cgroups{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;align-items:center}
.cg{border:3px solid var(--line);border-radius:14px;padding:8px 10px;background:var(--paper);display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.cg .k{width:100%;text-align:center;margin:0}
.citem{border:3px solid transparent;border-radius:12px;padding:2px;background:#fff}
.citem.sel{border-color:var(--ink);background:#FFF3BF}
.ccount{font-family:var(--f-disp);font-weight:700;font-size:24px;text-transform:uppercase}
.clist{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;min-height:60px}
.cfound{border:3px solid var(--line);border-radius:12px;background:#fff;padding:4px 8px;animation:pop .3s}
.cfound.num{font-family:var(--f-disp);font-weight:700;font-size:30px;padding:4px 14px}
.outfit{display:flex;gap:2px}
.digs .dig{width:70px;height:70px;border:3px solid var(--line);border-radius:14px;background:#fff;font-family:var(--f-disp);font-weight:700;font-size:38px;display:grid;place-items:center;box-shadow:3px 3px 0 var(--line)}
.digs .dig.er{background:var(--paper);font-size:26px}
.cnum{font-family:var(--f-disp);font-weight:700;font-size:48px;letter-spacing:.2em}
.pairsbox{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;align-items:center}
.pgraph{width:320px;height:300px}
.pn{cursor:pointer}.pn.sel circle{stroke:var(--yellow);stroke-width:8}

/* — весы — */
.scales{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.sbox{position:relative;border:3px solid var(--line);border-radius:16px;background:var(--paper);padding:6px}
.sbox>b{position:absolute;left:8px;top:4px;font-family:var(--f-disp);font-size:20px}
.scale{width:300px;height:150px;overflow:visible}
.scale .beam,.scale .pan{transform-box:view-box;transition:transform .5s}
.scale .beam{transform-origin:150px 40px}
.scale .pan{transform-origin:0 0}

/* — ним — */
.nimpile{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;max-width:620px}
.nst{font-size:44px;color:var(--yellow);-webkit-text-stroke:2px var(--ink);transition:opacity .2s}
.nst.hl{opacity:.25;outline:none!important}
.nimgame{width:100%;max-width:620px}
.nimlog{font-size:18px;margin:6px 0}

/* — переправа — */
.river{display:grid;grid-template-columns:1fr 1.3fr 1fr;width:100%;max-width:820px;min-height:170px;border:3px solid var(--line);border-radius:16px;overflow:hidden}
.bank{background:#B2F2D6;display:flex;flex-wrap:wrap;gap:6px;align-content:center;justify-content:center;padding:8px}
.water{background:repeating-linear-gradient(-20deg,#74C0FC 0 14px,#4DABF7 14px 28px);position:relative}
.boat{position:absolute;bottom:18px;left:6%;font-size:58px;transition:left .6s;display:flex;align-items:center}
.boat.right{left:52%}
.rit,.farmer{font-size:46px;line-height:1;border-radius:12px;padding:2px}
.rit{background:rgba(255,255,255,.75);border:3px solid var(--line)}
.rit.inb{font-size:34px;margin-left:-14px}

/* — текстовые — */
.wpic{min-height:10px}
.queue{display:flex;gap:2px;justify-content:center;flex-wrap:wrap}
.queue .me{filter:drop-shadow(0 0 6px var(--yellow))}
.logline{display:flex;align-items:center}
.lg{width:70px;height:34px;background:#C8925A;border:3px solid #6B4423;border-radius:8px}
.cut{font-size:22px;margin:0 2px}
.fence{display:flex;align-items:flex-end}
.post{width:12px;height:56px;background:#6B4423;border-radius:4px}
.gap{width:46px;height:10px;border-bottom:3px dashed #6B4423;margin-bottom:22px}

/* ================= АДАПТИВНОСТЬ ================= */
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){
  body{font-size:17px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .tabs a{padding:6px 9px;font-size:13px}
  .boxes{grid-template-columns:1fr}
  .pit{width:64px;height:64px}.pit svg{width:54px;height:54px}
  .oddit{min-width:86px;min-height:96px}.oddit svg{width:72px;height:72px}
  .ap{width:86px;height:86px}.ap svg{width:70px;height:70px}
  .nc{min-width:54px;height:60px;font-size:28px}.arc{width:22px}.numf{min-width:54px;height:56px;font-size:28px}
  .tri{transform:scale(.8);margin:-22px -20px}
  .mgrid{grid-template-columns:repeat(3,78px)}.mc{width:78px;height:78px}.mc svg{width:56px;height:56px}
  .sgrid{grid-template-columns:repeat(var(--n),62px)}.sc{height:62px}.sc svg{width:44px;height:44px}
  .sgrid.n6{grid-template-columns:repeat(6,48px)}.sgrid.n6 .sc{height:48px}
  .en{font-size:38px}.eop{width:52px;height:52px;font-size:32px}
  .venn{aspect-ratio:1.4/1}.vz .chip svg{width:34px;height:34px}.vlab{font-size:22px}
  .river{grid-template-columns:1fr 1fr 1fr}.rit,.farmer{font-size:34px}.boat{font-size:44px}
  .scene{width:200px;height:200px}
}