:root{--bg:#f4f8fb;--ink:#26304f;--ink2:#3d4770;--soft:#5b6585;--line:#dfe6ef;--mint:#5fae9c;--mintdk:#2f7565;--okbg:#e5f5ef;--okb:#bfe3d4;--okt:#2c6a5b;--warnbg:#fff6e2;--warnt:#8a5a12;--warnb:#ead7ae;--badbg:#fdecea;--badt:#9a3412}
@font-face{font-family:Rubik;src:url(fonts/rubik-regular.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:Rubik;src:url(fonts/rubik-medium.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:Rubik;src:url(fonts/rubik-bold.woff2) format("woff2");font-weight:700;font-display:swap}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body{font-family:Rubik,system-ui,sans-serif;color:var(--ink);background:var(--bg) linear-gradient(180deg,#eaf2f8 0%,#f4f8fb 45%,#eef5f2 100%) fixed;font-size:16.5px;line-height:1.5;min-height:100vh}
main{max-width:1320px;margin:0 auto;padding:14px 14px 10px;display:flex;flex-direction:column;gap:14px;min-height:100vh}
.i{width:1.15em;height:1.15em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;vertical-align:-.2em;flex:none}
.card{background:#fff;border:1px solid #e3e9f2;border-radius:18px;box-shadow:0 2px 10px rgba(40,60,110,.06)}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;background:rgba(255,255,255,.92);border:1px solid #e3e9f2;border-radius:18px;padding:10px 16px}
.top h1{margin:0;font-size:24px;line-height:1.2}
.kick{margin:0;color:var(--mintdk);font-weight:500;font-size:14.5px}
.dur{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;background:var(--okbg);border:1px solid var(--okb);color:var(--okt);border-radius:999px;padding:5px 12px;font-weight:500;font-size:15px}
.dur.big{font-size:16px;padding:7px 14px}
.start{max-width:640px;margin:4vh auto 0;padding:24px 24px 26px;display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.start h2{margin:6px 0 0;font-size:26px;line-height:1.25}
.start p{margin:0;color:var(--ink2)}
.steps{margin:4px 0 8px;padding:0;list-style:none;counter-reset:s;display:flex;flex-wrap:wrap;gap:8px}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 12px 5px 14px;font-size:15px;color:var(--ink2)}
.steps li::before{content:counter(s);display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--ink);color:#fff;font-size:13px;font-weight:700;margin-left:7px}
.btn{font:inherit;font-weight:500;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--mintdk);cursor:pointer;font-size:17px}
.btn.pri{background:var(--mint);border-color:var(--mint);color:#fff}
.btn.pri:active{background:var(--mintdk)}
.btn:disabled{opacity:.45;cursor:default}
.btn:focus-visible,.opt:focus-visible,canvas:focus-visible{outline:3px solid var(--mint);outline-offset:2px}
.lab{display:grid;grid-template-columns:1fr;gap:14px}
.stagewrap{position:relative;overflow:hidden;padding:0;background:linear-gradient(180deg,#f7fbfe,#eef4f9);display:flex;flex-direction:column}
#cv{display:block;width:100%;aspect-ratio:4/3.7;touch-action:manipulation;border-radius:18px 18px 0 0}
.hud{position:absolute;top:12px;right:12px;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:14px;padding:6px 14px;display:flex;flex-direction:column;align-items:center;line-height:1.1;pointer-events:none}
.hud .lbl{font-size:13.5px;color:var(--soft)}
.hud b{font-size:34px;font-variant-numeric:tabular-nums}
.side{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px}
.side h2{margin:0;font-size:22px;line-height:1.25}
.sp{margin:0;color:var(--ink2)}
.ctl{display:flex;flex-wrap:wrap;gap:10px}
.res{display:flex;flex-direction:column;gap:8px}
.ctl .btn{flex:1 1 auto}
.q{margin:2px 0 0;font-weight:500}
.opts{display:flex;flex-direction:column;gap:8px;width:100%}
.opt{font:inherit;text-align:right;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 14px;min-height:46px;color:var(--ink);cursor:pointer;display:flex;gap:10px;align-items:center}
.opt[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.opt.ok{background:var(--okbg);border-color:var(--okb);color:var(--okt)}
.opt.no{background:var(--badbg);border-color:#f3c9c0;color:var(--badt)}
.note{border-radius:14px;padding:10px 14px;margin:0}
.note.ok{background:var(--okbg);border:1px solid var(--okb);color:var(--okt)}
.note.warn{background:var(--warnbg);border:1px solid var(--warnb);color:var(--warnt)}
.note.bad{background:var(--badbg);border:1px solid #f3c9c0;color:var(--badt)}
.bars{display:flex;flex-direction:column;gap:8px;margin:2px 0}
.bar{display:grid;grid-template-columns:5.6em 1fr 2.4em;align-items:center;gap:8px;font-size:15px}
.bar i{display:block;height:16px;border-radius:999px;background:#e3eefb;position:relative;overflow:hidden}
.bar i s{position:absolute;top:0;bottom:0;right:0;left:auto;border-radius:999px;background:#7fb3d9}
.bar.soap i s{background:var(--mint)}
.bar b{font-variant-numeric:tabular-nums;text-align:left}
.trials{font-size:14px;color:var(--soft);margin:0}
.foot{margin-top:auto;display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;justify-content:flex-start}
.cred{margin:0;display:block;font-size:12.5px;color:var(--soft);line-height:1.4}
.cred a{color:var(--mintdk)}
.fb{display:inline-flex;align-items:center;gap:6px;color:var(--soft);font-size:14px;text-decoration:none;background:rgba(255,255,255,.85);border-radius:999px;padding:4px 12px;border:1px solid var(--line)}
@media (min-width:900px){
  main{padding:18px 22px 12px;height:100vh;min-height:0}
  .lab{grid-template-columns:minmax(0,1fr) 380px;align-items:stretch;flex:1;min-height:0}
  .stagewrap{display:flex}
  #cv{aspect-ratio:auto;flex:1;min-height:340px;height:0}
  .side{overflow:auto;align-self:start;max-height:100%}
  .top h1{font-size:28px}
  .start{margin-top:6vh}
}
@media (max-width:420px){.top{padding:8px 12px}.top h1{font-size:21px}.dur{font-size:14px;padding:4px 10px}.start{padding:18px 16px 20px}.start h2{font-size:22px}}
body.proj{font-size:20px}.proj .hud b{font-size:42px}.proj .btn{font-size:21px;min-height:56px}.proj .side h2{font-size:28px}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

.hud{min-width:118px}
.hud b{font-size:30px}
.hud .st{font-size:13px;color:var(--mintdk);font-weight:500;margin-top:3px;text-align:center;max-width:150px;line-height:1.25}
.hud .st.boil{color:#b4541a}
.grw{border-top:1px solid var(--line);background:rgba(255,255,255,.75);padding:4px 8px 4px}
#gr{display:block;width:100%;height:92px}
.tools{display:flex;flex-direction:column;gap:10px}
.tools:empty{display:none}
.tool{display:flex;flex-direction:column;gap:4px;background:#f8fbfd;border:1px solid var(--line);border-radius:14px;padding:8px 12px 9px}
.tool .tl{display:flex;align-items:center;gap:8px;font-weight:500;font-size:15.5px}
.tool .tl .i{color:var(--mintdk)}
.tool .tl output{margin-inline-start:auto;font-weight:500;color:var(--mintdk);font-variant-numeric:tabular-nums;font-size:15px}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:30px;background:transparent;margin:0;cursor:pointer;direction:rtl}
input[type=range]::-webkit-slider-runnable-track{height:8px;border-radius:999px;background:#dbe8f0}
input[type=range]::-moz-range-track{height:8px;border-radius:999px;background:#dbe8f0}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:26px;border-radius:50%;background:var(--mint);border:3px solid #fff;box-shadow:0 1px 4px rgba(38,48,79,.3);margin-top:-9px}
input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--mint);border:3px solid #fff;box-shadow:0 1px 4px rgba(38,48,79,.3)}
input[type=range]:focus-visible{outline:3px solid var(--mint);outline-offset:2px;border-radius:8px}
.seg{display:flex;gap:6px}
.seg button,.tg{font:inherit;font-size:15px;font-weight:500;flex:1 1 0;min-width:0;display:inline-flex;align-items:center;justify-content:center;gap:5px;min-height:42px;padding:0 6px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink2);cursor:pointer;white-space:nowrap}
.seg button[aria-pressed="true"],.tg[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.seg button:focus-visible,.tg:focus-visible{outline:3px solid var(--mint);outline-offset:2px}
.tgs{display:flex;gap:8px}
.charts{display:grid;grid-template-columns:1fr;gap:8px}
.chart{background:#f8fbfd;border:1px solid var(--line);border-radius:14px;padding:8px 10px 6px}
.chart h3{margin:0;font-size:15px;font-weight:500}
.chart canvas{display:block;width:100%;height:132px}
.chart p{margin:0;font-size:13.5px;color:var(--soft)}
.sum{display:grid;grid-template-columns:auto 1fr;gap:6px 10px;font-size:15px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
.sum b{color:var(--ink)}
.sum span{color:var(--ink2)}
@media (min-width:900px){.side{max-height:calc(100vh - 150px)}.charts{grid-template-columns:1fr}}

.sort{display:flex;flex-direction:column;gap:8px}
.si{background:#f8fbfd;border:1px solid var(--line);border-radius:14px;padding:8px 10px;display:flex;flex-direction:column;gap:6px}
.si.ok{background:#f3faf7;border-color:var(--okb)}
.sq{margin:0;font-weight:500;font-size:15.5px}
.sb{display:flex;gap:6px}
.sb button{font:inherit;font-size:15px;font-weight:500;flex:1 1 0;min-width:0;min-height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink2);cursor:pointer}
.sb button.ok{background:var(--okbg);border-color:var(--okb);color:var(--okt)}
.sb button.no{background:var(--badbg);border-color:#f3c9c0;color:var(--badt)}
.sb button:disabled:not(.ok){opacity:.5;cursor:default}
.sb button:focus-visible{outline:3px solid var(--mint);outline-offset:2px}
.sf:empty{display:none}
.sf .note{font-size:14.5px;padding:7px 12px}

.top{flex-wrap:wrap}
@media (max-width:600px){.top .mlchip-w{order:3;flex-basis:100%;display:flex}.top .dur{margin-inline-start:auto}}
.a11y{font-size:12.5px;color:var(--soft)}.a11y summary{cursor:pointer;color:var(--mintdk)}.a11y p{margin:4px 0 0;max-width:640px}

/* ===== story layer (v2) ===== */
body.instory{background:var(--bg)}
body.instory::before{content:"";position:fixed;inset:0;z-index:-1;background:linear-gradient(rgba(244,248,251,.84),rgba(244,248,251,.9)),var(--scene) center/cover no-repeat;filter:saturate(.9)}
.intro{position:relative;min-height:calc(100vh - 110px);border-radius:22px;overflow:hidden;display:flex;align-items:center;justify-content:flex-end;padding:28px;background:#2b3552 url(img/scene-school.webp) center/cover no-repeat;box-shadow:0 6px 30px rgba(38,48,79,.18)}
.intro::before{content:"";position:absolute;inset:0;background:linear-gradient(270deg,rgba(38,48,79,0) 30%,rgba(38,48,79,.55) 100%)}
.introcard{position:relative;max-width:520px;background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:20px;padding:24px 26px 22px;display:flex;flex-direction:column;gap:10px;box-shadow:0 10px 34px rgba(20,30,60,.22)}
.introcard .when{margin:0;color:var(--mintdk);font-weight:500;font-size:15px}
.introcard h2{margin:0;font-size:34px;line-height:1.12;color:var(--ink)}
.introcard .sub{margin:-4px 0 4px;color:var(--soft);font-weight:500}
.introcard p{margin:0;color:var(--ink2)}
.introbtm{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:4px}
.introcard .hint{font-size:14px;color:var(--soft)}
.chbar{display:flex;align-items:center;gap:5px;margin-bottom:8px}
.chbar .seg{flex:1;height:7px;border-radius:99px;background:#e6edf4}
.chbar .seg.done{background:var(--mint)}
.chbar .seg.cur{background:linear-gradient(90deg,#bfe3d4,var(--mint))}
.chbar .nb{font:inherit;font-size:13.5px;font-weight:500;display:inline-flex;align-items:center;gap:6px;margin-inline-start:6px;padding:4px 10px;border-radius:99px;border:1px solid var(--okb);background:var(--okbg);color:var(--okt);cursor:pointer;white-space:nowrap}
.say{display:flex;align-items:flex-start;gap:10px;margin:2px 0 10px}
.say .av{flex:none;width:46px;height:46px;border-radius:50%;background:#e8eef5 center/cover no-repeat;border:2px solid #fff;box-shadow:0 1px 4px rgba(38,48,79,.18);display:grid;place-items:center;font-weight:700;color:var(--mintdk);font-size:19px}
.say .bub{position:relative;margin:0;background:#f2f8f6;border:1px solid var(--okb);border-radius:14px;border-start-start-radius:4px;padding:7px 12px;font-size:15.5px;color:var(--ink);line-height:1.4}
.say .bub b{display:block;font-size:13px;color:var(--mintdk);font-weight:500;margin-bottom:1px}
.chov{position:fixed;inset:0;z-index:50;background:rgba(30,38,64,.55);display:grid;place-items:center;padding:16px;overflow:auto}
body.ovopen{overflow:hidden}
.chcard{width:min(900px,100%);background:#fff;border-radius:22px;overflow:hidden;display:grid;grid-template-columns:1.05fr 1fr;box-shadow:0 18px 60px rgba(10,20,50,.35);animation:chin .35s ease-out}
@keyframes chin{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.chimg{background:#dfe6ef center/cover no-repeat;min-height:320px}
.chtx{padding:24px 24px 22px;display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.chtx h2{margin:0;font-size:28px;line-height:1.15}
.chtx p{margin:0;color:var(--ink2)}
.chtx .mis{display:flex;gap:8px;align-items:flex-start;background:var(--okbg);border:1px solid var(--okb);color:var(--okt);border-radius:12px;padding:9px 12px;font-weight:500}
.chtx .mis .i{margin-top:.15em}
.chtx .btn{margin-top:6px}
.clues{margin:4px 0;padding:0 18px 0 0;display:flex;flex-direction:column;gap:8px;color:var(--ink2)}
.clues b{color:var(--mintdk);font-weight:500;margin-left:4px}
.clues .empty{list-style:none;color:var(--soft)}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);z-index:60;background:var(--ink);color:#fff;border-radius:99px;padding:9px 18px;display:flex;gap:8px;align-items:center;font-weight:500;box-shadow:0 8px 24px rgba(20,30,60,.3);animation:chin .3s ease-out}
.fin{display:grid;grid-template-columns:1fr;gap:0;border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-top:12px;background:#fff}
.finimg{aspect-ratio:16/9;background:#dfe6ef center/cover no-repeat}
.fintx{padding:14px 16px 16px;display:flex;flex-direction:column;gap:8px}
.fintx h3{margin:0;font-size:22px}
.fintx p{margin:0;color:var(--ink2)}
.fintx .punch{font-weight:500;color:var(--mintdk)}
.book summary{cursor:pointer;color:var(--okt);font-weight:500;display:flex;gap:6px;align-items:center}
@media (max-width:760px){
 .intro{min-height:auto;padding:0;flex-direction:column;align-items:stretch;background-position:62% center;background-size:auto 300px;background-repeat:no-repeat;background-color:#fff;padding-top:250px}
 .intro::before{display:none}
 .introcard{max-width:none;border-radius:20px 20px 0 0;border:0;padding:20px 18px 20px;box-shadow:none}
 .introcard h2{font-size:28px}
 .chcard{grid-template-columns:1fr}
 .chimg{min-height:0;aspect-ratio:16/9}
 .chtx{padding:16px 16px 18px}
 .chtx h2{font-size:23px}
}
@media (prefers-reduced-motion:reduce){.chcard,.toast{animation:none}}

.side .ctl{position:sticky;bottom:-18px;background:linear-gradient(rgba(255,255,255,0),#fff 14px);padding:14px 0 4px;margin-bottom:-4px;z-index:2}
.say{margin:0 0 4px}.say .av{width:40px;height:40px}.say .bub{font-size:15px;padding:6px 11px}
.chbar{margin-bottom:2px}

@media (max-width:760px){.intro{background-position:60% 0;background-size:auto 280px;padding-top:240px}}

/* under-the-cup chooser, on the canvas (v5) */
.ubar{position:absolute;z-index:2;display:flex;align-items:center;gap:8px;padding:4px;border-radius:16px;background:rgba(255,255,255,.94);border:1px solid var(--line);box-shadow:0 2px 10px rgba(38,48,79,.12)}
.ubar[hidden]{display:none}
.ubar .ul{font-size:13.5px;font-weight:500;color:var(--soft);padding-inline-start:8px;white-space:nowrap}
.ubar .ubb{display:flex;gap:4px}
.ubar button{font:inherit;font-size:15px;font-weight:500;display:inline-flex;align-items:center;justify-content:center;gap:5px;min-height:44px;padding:0 12px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;white-space:nowrap}
.ubar button[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.ubar button:focus-visible{outline:3px solid var(--mint);outline-offset:2px}
.ubar .i{width:18px;height:18px}
@media (max-width:420px){.ubar{gap:4px;padding:3px}.ubar .ul{font-size:12px;padding-inline-start:4px}.ubar button{font-size:13.5px;padding:0 7px;gap:3px}.ubar .i{width:16px;height:16px}}