:root{
  --red:#B01F1A; --red-deep:#861611; --red-soft:#F7E6E0;
  --paper:#F8F4EC; --card:#FFFEFB; --ink:#1E1A16; --ink-2:#5A5149; --ink-3:#958A7E;
  --line:#ECE3D3; --line-2:#F3EDE2; --jade:#2E6A55; --jade-soft:#E2EFE8; --gold:#B88A3B;
  --t1:#C0392B; --t2:#D98A1E; --t3:#2D8A4E; --t4:#2F5FA8; --t0:#8F857A;
  --r-lg:24px; --r-md:14px; --r-sm:10px;
  --shadow:0 1px 2px rgba(70,45,20,.04), 0 14px 34px -20px rgba(70,45,20,.28);
  --hz:"Noto Serif SC","Noto Serif CJK SC","Songti SC","STSong",serif;
  --ui:"Lexend",-apple-system,"PingFang SC","Helvetica Neue",Arial,sans-serif;
  --safe-b:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--ui);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
body{min-height:100vh;background:radial-gradient(1100px 620px at 92% -12%,#F5DFD3 0%,rgba(245,223,211,0) 62%),radial-gradient(900px 520px at -8% 108%,#EEE5D2 0%,rgba(238,229,210,0) 60%),var(--paper);background-attachment:fixed}
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' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .4 0 0 0 0 .3 0 0 0 0 .2 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")}
#app{position:relative;z-index:1}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--red)}
:focus-visible{outline:2px solid var(--red);outline-offset:2px;border-radius:6px}
.hz{font-family:var(--hz);font-weight:600}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.025em;line-height:1.12}
h1{font-size:clamp(30px,4.4vw,46px);letter-spacing:-.035em} h2{font-size:22px} h3{font-size:17px;letter-spacing:-.015em}
.display-hz{font-family:var(--hz);font-weight:600;font-size:clamp(34px,5vw,56px);letter-spacing:.02em;line-height:1.1;margin:0}
p{margin:0}
.muted{color:var(--ink-2)} .faint{color:var(--ink-3)} .small{font-size:13.5px}
.row{display:flex;align-items:center;gap:10px} .wrap{flex-wrap:wrap} .between{justify-content:space-between} .grow{flex:1}
.stack{display:flex;flex-direction:column;gap:14px} .stack-lg{display:flex;flex-direction:column;gap:26px}
.hidden{display:none!important}

/* ---------- shell ---------- */
.shell{display:grid;grid-template-columns:248px 1fr;min-height:100vh}
.side{position:sticky;top:0;height:100vh;padding:28px 18px;background:rgba(255,254,251,.55);backdrop-filter:blur(14px);border-right:1px solid var(--line);display:flex;flex-direction:column;gap:6px}
.brand{display:flex;align-items:center;gap:12px;padding:0 8px 22px}
.seal{width:40px;height:40px;border-radius:9px;background:var(--red);color:#FBF8F2;display:grid;place-items:center;font-family:var(--hz);font-size:23px;font-weight:700;box-shadow:inset 0 0 0 2px rgba(255,255,255,.18),inset 0 0 0 4px var(--red)}
.brand-name{font-weight:800;letter-spacing:.14em;font-size:12.5px;line-height:1.25}
.brand-name span{display:block;letter-spacing:.02em;font-weight:500;color:var(--ink-3);font-size:12px}
.nav a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;color:var(--ink-2);text-decoration:none;font-weight:600;font-size:15px}
.nav a .ico{width:20px;text-align:center;font-family:var(--hz);font-size:17px;color:var(--ink-3)}
.nav a:hover{background:var(--line-2)}
.nav a.on{background:var(--card);color:var(--ink);box-shadow:var(--shadow)}
.nav a.on .ico{color:var(--red)}
.side-foot{margin-top:auto;padding:12px;font-size:13px;color:var(--ink-3)}
.main{padding:34px clamp(18px,4vw,48px) 120px;max-width:1180px;width:100%;min-width:0}
.shell>*{min-width:0}
html,body{overflow-x:clip}
.topbar{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.tabbar{display:none}
@media (max-width:860px){
  .shell{grid-template-columns:1fr}
  .side{display:none}
  .main{padding:18px 16px calc(96px + var(--safe-b))}
  .tabbar{display:flex;position:fixed;left:10px;right:10px;bottom:calc(10px + var(--safe-b));z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:6px}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:1px;padding:7px 2px;border-radius:14px;text-decoration:none;color:var(--ink-3);font-size:11px;font-weight:700}
  .tabbar a .ico{font-family:var(--hz);font-size:19px;line-height:1.1}
  .tabbar a.on{color:var(--red);background:var(--red-soft)}
  .mobile-brand{display:flex!important}
}
.mobile-brand{display:none;align-items:center;gap:10px;margin-bottom:18px}
.mobile-brand .seal{width:34px;height:34px;font-size:19px;border-radius:8px}

/* ---------- surfaces ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow)}
.card.flat{box-shadow:none}
.card-link{cursor:pointer;transition:transform .25s cubic-bezier(.2,.9,.3,1),border-color .2s,box-shadow .25s;will-change:transform}
.card-link:hover{border-color:#DCCBB0;box-shadow:0 1px 2px rgba(70,45,20,.04),0 22px 40px -22px rgba(70,45,20,.35)}
.card-link:active{transform:scale(.99)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.g4{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:6px 0 12px}
.section-title h2{font-size:19px}
.divider{height:1px;background:var(--line);margin:4px 0}

/* ---------- controls ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);background:var(--card);color:var(--ink);padding:11px 18px;border-radius:999px;font-weight:650;font-size:15px;cursor:pointer;text-decoration:none;white-space:nowrap;transition:background .15s,transform .1s}
.btn:hover{background:var(--line-2)}
.btn:active{transform:scale(.97)}
.btn.primary{background:var(--red);border-color:var(--red);color:#FFF8F2;box-shadow:inset 0 1px 0 rgba(255,255,255,.18),0 10px 22px -12px rgba(176,31,26,.75)}
.btn.primary:hover{background:var(--red-deep)}
.btn.jade{background:var(--jade);border-color:var(--jade);color:#fff}
.btn.ghost{background:transparent;border-color:transparent}
.btn.ghost:hover{background:var(--line-2)}
.btn.sm{padding:7px 13px;font-size:13.5px}
.btn.lg{padding:15px 26px;font-size:17px}
.btn.block{width:100%}
.btn[disabled]{opacity:.45;pointer-events:none}
.icon-btn{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--card);display:grid;place-items:center;cursor:pointer;font-size:16px}
label.field{display:flex;flex-direction:column;gap:6px;font-weight:650;font-size:14px}
label.field .hint{font-weight:450;color:var(--ink-3);font-size:13px}
.input,select.input,textarea.input{width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 14px;font-size:16px;outline:none;transition:border-color .15s,box-shadow .15s}
.input:focus{border-color:var(--red);box-shadow:0 0 0 4px var(--red-soft)}
textarea.input{min-height:120px;resize:vertical;line-height:1.6}
.seg{display:inline-flex;background:var(--line-2);border-radius:999px;padding:4px;gap:2px;flex-wrap:wrap}
.seg button{border:0;background:transparent;padding:7px 14px;border-radius:999px;font-weight:650;font-size:13.5px;cursor:pointer;color:var(--ink-2)}
.seg button.on{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;background:var(--line-2);font-size:12.5px;font-weight:650;color:var(--ink-2)}
.chip.red{background:var(--red-soft);color:var(--red)}
.chip.jade{background:var(--jade-soft);color:var(--jade)}
.chip.gold{background:#F6EDD9;color:#8A6420}
.toggle{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--line-2)}
.switch{position:relative;width:46px;height:28px;flex:none}
.switch input{opacity:0;width:0;height:0}
.switch span{position:absolute;inset:0;background:#DCD3C4;border-radius:99px;transition:.2s;cursor:pointer}
.switch span:before{content:"";position:absolute;width:22px;height:22px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch input:checked+span{background:var(--jade)}
.switch input:checked+span:before{transform:translateX(18px)}

/* ---------- stats & progress ---------- */
.stat{display:flex;flex-direction:column;gap:2px}
.stat b{font-size:30px;font-weight:750;letter-spacing:-.02em}
.ring{--p:0;width:54px;height:54px;border-radius:50%;background:conic-gradient(var(--jade) calc(var(--p)*1%),var(--line-2) 0);display:grid;place-items:center;flex:none}
.ring i{width:42px;height:42px;border-radius:50%;background:#fff;display:grid;place-items:center;font-style:normal;font-weight:750;font-size:13px}
.bar{height:8px;background:var(--line-2);border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--jade);border-radius:99px;transition:width .4s ease}
.pgrid{overflow:auto;border:1px solid var(--line);border-radius:var(--r-md);background:#fff}
.pgrid table{border-collapse:collapse;width:100%;min-width:620px}
.pgrid th,.pgrid td{padding:10px 12px;border-bottom:1px solid var(--line-2);text-align:center;font-size:14px}
.pgrid th:first-child,.pgrid td:first-child{text-align:left;position:sticky;left:0;background:#fff;min-width:150px}
.pgrid th{font-size:12.5px;color:var(--ink-3);font-weight:700}
.cell{width:30px;height:30px;border-radius:9px;display:inline-grid;place-items:center;font-size:12px;font-weight:750;cursor:pointer}
.cell.done{background:var(--jade);color:#fff}
.cell.mid{background:#E7C873;color:#4B3A10}
.cell.low{background:#E9A79C;color:#5A1C14}
.cell.none{background:var(--line-2);color:var(--ink-3)}

/* ---------- words ---------- */
.ruby{display:inline-flex;gap:.08em;align-items:flex-end;flex-wrap:wrap;justify-content:center}
.ruby .ch{display:inline-flex;flex-direction:column;align-items:center}
.ruby .ch rt,.ruby .ch .py{font-family:var(--ui);font-size:.32em;font-weight:600;line-height:1.1;margin-bottom:.12em;letter-spacing:.01em}
.ruby .ch .h{font-family:var(--hz);font-weight:600;line-height:1}
.tc .t1{color:var(--t1)}.tc .t2{color:var(--t2)}.tc .t3{color:var(--t3)}.tc .t4{color:var(--t4)}.tc .t0{color:var(--t0)}
.py-tap .py{visibility:hidden}
.py-tap.reveal .py{visibility:visible}
.word-chip{display:inline-flex;align-items:center;gap:8px;padding:6px 12px 6px 8px;border-radius:12px;background:#fff;border:1px solid var(--line);font-size:14px}
.word-chip .hz{font-size:18px}
.wtable{width:100%;border-collapse:collapse}
.wtable td,.wtable th{padding:9px 8px;border-bottom:1px solid var(--line-2);text-align:left;vertical-align:middle}
.wtable th{font-size:12.5px;color:var(--ink-3);font-weight:700}
.wtable input{border:1px solid transparent;background:transparent;padding:6px 8px;border-radius:8px;width:100%}
.wtable input:hover{border-color:var(--line)}
.wtable input:focus{border-color:var(--red);background:#fff;outline:none}

/* ---------- assignment cards (student) ---------- */
.hw{position:relative;overflow:hidden}
.hw .hw-hz{position:absolute;right:-8px;bottom:-26px;font-family:var(--hz);font-size:120px;color:var(--line-2);font-weight:700;pointer-events:none;line-height:1}
.hw > *:not(.hw-hz){position:relative}
.stamp{width:62px;height:62px;border:3px solid var(--red);border-radius:12px;color:var(--red);display:grid;place-items:center;font-family:var(--hz);font-weight:700;font-size:26px;transform:rotate(-8deg);opacity:.9;background:rgba(255,255,255,.6)}
.stamp.sm{width:40px;height:40px;font-size:17px;border-width:2px;border-radius:8px}
.stamp.press{animation:press .55s cubic-bezier(.2,1.4,.4,1) both}
@keyframes press{0%{transform:rotate(-8deg) scale(2.4);opacity:0}60%{transform:rotate(-8deg) scale(.92);opacity:1}100%{transform:rotate(-8deg) scale(1)}}
.stamps{display:grid;grid-template-columns:repeat(auto-fill,minmax(70px,1fr));gap:12px}

/* ---------- player ---------- */
.player{max-width:640px;margin:0 auto}
.player-top{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.steps-dots{display:flex;gap:6px;flex:1}
.steps-dots i{flex:1;height:6px;border-radius:9px;background:var(--line)}
.steps-dots i.done{background:var(--jade)}
.steps-dots i.cur{background:var(--red)}
.stage{background:#fff;border:1px solid var(--line);border-radius:28px;padding:26px 22px;box-shadow:var(--shadow);min-height:420px;display:flex;flex-direction:column}
.stage-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:10px}
.prompt-hz{font-size:clamp(64px,18vw,104px);text-align:center;margin:16px 0 8px}
.big-emoji{font-size:64px;text-align:center;line-height:1.1}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:auto}
.opt{border:1.5px solid var(--line);background:#fff;border-radius:18px;padding:18px 12px;font-size:18px;font-weight:650;cursor:pointer;min-height:72px;transition:transform .1s,background .15s,border-color .15s}
.opt:active{transform:scale(.97)}
.opt .hz{font-size:30px}
.opt.right{background:var(--jade-soft);border-color:var(--jade);color:var(--jade)}
.opt.wrong{background:var(--red-soft);border-color:var(--red);color:var(--red);animation:shake .35s}
@keyframes shake{25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
.flash{perspective:1200px;height:330px;cursor:pointer;margin:6px 0 16px}
.flash-in{position:relative;width:100%;height:100%;transition:transform .55s cubic-bezier(.3,.7,.2,1);transform-style:preserve-3d}
.flash.flip .flash-in{transform:rotateY(180deg)}
.flash-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:24px;border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:#fff;background-image:linear-gradient(var(--line-2) 1px,transparent 1px),linear-gradient(90deg,var(--line-2) 1px,transparent 1px);background-size:50% 50%;background-position:center}
.flash-back{transform:rotateY(180deg);background:var(--paper)}
.match-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.match-grid .opt{min-height:84px;padding:10px 6px}
.match-grid .opt.sel{border-color:var(--red);background:var(--red-soft)}
.match-grid .opt.gone{visibility:hidden}
.tian{position:relative;width:min(300px,78vw);aspect-ratio:1;margin:8px auto;border:2px solid var(--red);border-radius:6px;background:#fff;touch-action:none}
.tian:before,.tian:after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(var(--red) 0 0) center/100% 1px no-repeat,linear-gradient(var(--red) 0 0) center/1px 100% no-repeat;opacity:.3}
.tian:after{background:linear-gradient(45deg,transparent calc(50% - .5px),var(--red) 50%,transparent calc(50% + .5px)),linear-gradient(-45deg,transparent calc(50% - .5px),var(--red) 50%,transparent calc(50% + .5px));opacity:.18}
.tian canvas,.tian svg,.tian .ghost{position:absolute;inset:0;width:100%;height:100%}
.tian .ghost{display:grid;place-items:center;font-family:var(--hz);font-size:min(230px,60vw);color:rgba(31,27,23,.1);line-height:1;pointer-events:none}
.tokens{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;min-height:62px;padding:12px;border-radius:16px}
.tokens.answer{background:var(--paper);border:1.5px dashed var(--line);margin-bottom:12px}
.token{border:1.5px solid var(--line);background:#fff;border-radius:14px;padding:10px 14px;font-family:var(--hz);font-size:24px;cursor:pointer}
.token:active{transform:scale(.96)}
.recorder{display:flex;flex-direction:column;align-items:center;gap:14px;margin:auto 0}
.rec-btn{width:96px;height:96px;border-radius:50%;border:0;background:var(--red);color:#fff;font-size:34px;cursor:pointer;box-shadow:0 0 0 8px var(--red-soft)}
.rec-btn.on{animation:pulse 1.2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 18px rgba(166,30,26,.12)}}
.done-screen{text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;margin:auto}

/* ---------- modal / toast ---------- */
.overlay{position:fixed;inset:0;background:rgba(31,27,23,.38);backdrop-filter:blur(3px);z-index:80;display:flex;align-items:flex-end;justify-content:center;padding:16px;animation:fade .2s}
@media (min-width:700px){.overlay{align-items:center}}
.modal{background:var(--paper);border-radius:26px;width:min(560px,100%);max-height:88vh;overflow:auto;padding:24px;box-shadow:0 30px 60px -20px rgba(0,0,0,.4);animation:rise .28s cubic-bezier(.2,.9,.3,1)}
.modal.wide{width:min(860px,100%)}
@keyframes fade{from{opacity:0}}
@keyframes rise{from{transform:translateY(24px);opacity:0}}
.toast{position:fixed;left:50%;bottom:calc(100px + var(--safe-b));transform:translateX(-50%);background:var(--ink);color:#FBF8F2;padding:12px 20px;border-radius:999px;font-weight:600;font-size:14.5px;z-index:99;animation:rise .25s;box-shadow:var(--shadow);max-width:90vw;text-align:center}
@media (min-width:861px){.toast{bottom:32px}}

/* ---------- demo bar ---------- */
.demo-pill{position:fixed;top:12px;right:12px;z-index:60;display:flex;align-items:center;gap:6px;background:rgba(31,27,23,.92);color:#FBF8F2;border-radius:999px;padding:5px 6px 5px 14px;font-size:12.5px;font-weight:650;box-shadow:var(--shadow)}
.demo-pill button{border:0;background:rgba(255,255,255,.12);color:#fff;border-radius:999px;padding:6px 11px;font-size:12.5px;font-weight:700;cursor:pointer}
.demo-pill button.on{background:var(--red)}
@media (max-width:860px){.demo-pill{top:calc(8px + env(safe-area-inset-top,0px));right:50%;transform:translateX(50%)} body.demo{padding-top:44px}}

/* ---------- auth / join ---------- */
.auth{min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card{width:min(440px,100%);text-align:center}
.auth-hero{font-family:var(--hz);font-size:84px;color:var(--red);line-height:1;margin-bottom:6px;font-weight:700}

/* ---------- games ---------- */
.game-tile{position:relative;overflow:hidden;min-height:170px;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;border:0}
.game-tile .gt-hz{position:absolute;right:14px;top:6px;font-family:var(--hz);font-size:78px;opacity:.22;font-weight:700}
.game-tile h3{font-size:20px}
.gt-race{background:linear-gradient(160deg,#A61E1A,#6E120E)}
.gt-snap{background:linear-gradient(160deg,#2E6A55,#173D30)}
.gt-spot{background:linear-gradient(160deg,#2F4E86,#18294A)}
.gt-memory{background:linear-gradient(160deg,#B88A3B,#6E4F1C)}
.arena{max-width:720px;margin:0 auto}
.scoreboard{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.pl{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 12px 5px 5px;font-size:13.5px;font-weight:700}
.pl .av{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:13px;font-family:var(--hz)}
.pl.me{border-color:var(--red)}
.pl.lead{box-shadow:0 0 0 3px #F6EDD9}
.timer{height:6px;background:var(--line-2);border-radius:9px;overflow:hidden;margin-bottom:14px}
.timer i{display:block;height:100%;background:var(--red);transition:width .1s linear}
.pile{position:relative;height:250px;display:grid;place-items:center;margin:10px 0 18px}
.pcard{position:absolute;width:190px;height:230px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:0 10px 30px -12px rgba(0,0,0,.3);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;font-size:22px;font-weight:700;padding:12px;text-align:center}
.pcard .hz{font-size:64px}
.pcard.under{transform:translate(-62px,8px) rotate(-9deg);opacity:.92}
.pcard.top{transform:translate(42px,-4px) rotate(6deg);animation:deal .3s cubic-bezier(.2,.9,.3,1)}
@keyframes deal{from{transform:translate(260px,-40px) rotate(30deg);opacity:0}}
.slap{width:100%;height:96px;border-radius:26px;border:0;background:var(--red);color:#fff;font-size:28px;font-weight:800;letter-spacing:.04em;cursor:pointer;box-shadow:0 6px 0 var(--red-deep);touch-action:manipulation}
.slap:active{transform:translateY(4px);box-shadow:0 2px 0 var(--red-deep)}
.spot-wrap{display:grid;gap:16px}
.spot-card{position:relative;aspect-ratio:1;max-width:330px;width:100%;margin:0 auto;border-radius:50%;background:#fff;border:2px solid var(--line);box-shadow:var(--shadow)}
.spot-card.mine{border-color:var(--red)}
.spot-item{position:absolute;transform:translate(-50%,-50%);border:0;background:transparent;cursor:pointer;padding:6px;border-radius:14px;font-weight:700;line-height:1.05;text-align:center}
.spot-item:hover{background:var(--line-2)}
.spot-item.hit{background:var(--jade-soft);color:var(--jade)}
.spot-item.miss{background:var(--red-soft)}
.mem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.mem{aspect-ratio:3/4;border-radius:16px;border:0;cursor:pointer;perspective:800px;background:transparent;padding:0}
.mem-in{position:relative;width:100%;height:100%;transition:transform .4s;transform-style:preserve-3d}
.mem.up .mem-in{transform:rotateY(180deg)}
.mem-f,.mem-b{position:absolute;inset:0;border-radius:16px;backface-visibility:hidden;display:grid;place-items:center;text-align:center;padding:6px}
.mem-f{background:var(--red);color:rgba(255,255,255,.35);font-family:var(--hz);font-size:30px;box-shadow:inset 0 0 0 4px var(--red),inset 0 0 0 5px rgba(255,255,255,.3)}
.mem-b{background:#fff;border:1px solid var(--line);transform:rotateY(180deg);font-weight:700;font-size:15px}
.mem-b .hz{font-size:34px}
.mem.got .mem-b{background:var(--jade-soft);border-color:var(--jade)}
.code-big{font-size:42px;font-weight:800;letter-spacing:.18em;font-family:var(--ui)}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:90}

/* ---------- print sheet ---------- */
.sheet{width:794px;background:#fff;color:#1F1B17;padding:44px 48px;font-family:var(--ui)}
.sheet-head{display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid var(--red);padding-bottom:12px;margin-bottom:18px}
.sheet table{width:100%;border-collapse:collapse}
.sheet td{border:1px solid #E3D6C1;padding:6px;vertical-align:middle}
.sq{width:58px;height:58px;position:relative;border:1px solid #C9473F;display:inline-block;margin-right:4px}
.sq:before{content:"";position:absolute;inset:0;background:linear-gradient(#C9473F 0 0) center/100% 1px no-repeat,linear-gradient(#C9473F 0 0) center/1px 100% no-repeat;opacity:.35}
.sq b{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--hz);font-size:44px;font-weight:500;color:rgba(0,0,0,.16)}
.sq b.solid{color:#1F1B17}
@media print{
  body{background:#fff}
  body > *:not(#print-root){display:none!important}
  #print-root{display:block!important}
  .sheet{width:auto;padding:0}
}
#print-root{display:none}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}

/* ---------- brand ---------- */
.mark{display:block;flex:none}
.lockup{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink)}
.lockup-type b{display:block;font-weight:600;letter-spacing:.22em;font-size:12.5px;line-height:1.3}
.lockup-type i{display:block;font-style:normal;color:var(--ink-3);font-size:12px;letter-spacing:.04em}
@keyframes zdraw{to{stroke-dashoffset:0}}
.splash{position:fixed;inset:0;z-index:300;background:var(--paper);display:grid;place-items:center;transition:opacity .6s ease,transform .6s ease;cursor:pointer}
.splash.out{opacity:0;transform:scale(1.05);pointer-events:none}
.splash-in{display:flex;flex-direction:column;align-items:center;gap:14px}
.splash-mark{animation:markup .8s cubic-bezier(.6,0,.2,1) 1.5s both}
.splash-mark .mark{filter:drop-shadow(0 18px 24px rgba(140,20,12,.18))}
@keyframes markup{to{transform:scale(.72) translateY(10px)}}
.splash-word{font-weight:600;font-size:clamp(15px,3.6vw,20px);letter-spacing:.34em;white-space:nowrap;margin-right:-.34em}
.splash-word span{display:inline-block;opacity:0;transform:translateY(16px);animation:rise2 .55s cubic-bezier(.2,.9,.3,1) forwards}
@keyframes rise2{to{opacity:1;transform:none}}
.splash-sub{font-family:var(--hz);letter-spacing:.8em;margin-right:-.8em;color:var(--red);font-size:14px;opacity:0;animation:rise2 .6s 2.3s forwards}

/* ---------- landing ---------- */
.landing{min-height:100vh;display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:24px;padding:28px clamp(20px,5vw,72px) 40px;max-width:1360px;margin:0 auto}
.landing-top{position:absolute;top:26px;left:clamp(20px,5vw,72px)}
.stage3d{perspective:1300px;height:min(78vh,680px);position:relative}
.stage-rot{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .35s cubic-bezier(.2,.8,.3,1)}
.hero-mark{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) translateZ(70px)}
.hero-mark .mark{width:min(300px,52vw);height:auto;filter:drop-shadow(1px 1px 0 #8C1712) drop-shadow(1px 1px 0 #8C1712) drop-shadow(1px 1px 0 #7A130F) drop-shadow(1px 1px 0 #7A130F) drop-shadow(1px 1px 0 #6A100C) drop-shadow(1px 1px 0 #6A100C) drop-shadow(0 34px 34px rgba(120,22,12,.28))}
.hm-shadow{display:none}
.ftile{position:absolute;left:calc(50% + var(--x) * min(30vw,290px));top:calc(50% + var(--y) * min(32vh,250px));transform:translate(-50%,-50%) translateZ(var(--z));display:flex;flex-direction:column;align-items:center;gap:2px;padding:12px 18px 14px;border-radius:20px;background:rgba(255,254,251,.78);backdrop-filter:blur(8px);border:1px solid var(--line);box-shadow:0 20px 40px -24px rgba(70,45,20,.4);animation:float 7s ease-in-out var(--d) infinite}
.ftile span{font-size:12px;color:var(--ink-3);font-weight:500}
.ftile b{font-family:var(--hz);font-size:30px;font-weight:600;line-height:1.1;white-space:nowrap}
.ftile span{white-space:nowrap}
@keyframes float{50%{margin-top:-12px}}
.signin{width:100%;max-width:440px;justify-self:center}
.signin h1{font-size:clamp(32px,4vw,48px)}
.signin .lede{color:var(--ink-2);margin:12px 0 26px;font-size:17px;line-height:1.55}
.roles{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.role{position:relative;overflow:hidden;text-align:left;border:1.5px solid var(--line);background:var(--card);border-radius:22px;padding:16px 16px 14px;cursor:pointer;transition:transform .4s cubic-bezier(.2,.9,.3,1),opacity .3s,filter .3s,border-color .2s,box-shadow .3s}
.role b{display:block;font-weight:600;font-size:15.5px}
.role small{color:var(--ink-3);font-size:12.5px}
.role .rhz{position:absolute;right:10px;top:4px;font-family:var(--hz);font-size:44px;font-weight:700;color:var(--line);transition:color .3s}
.roles.has .role:not(.on){opacity:.55;filter:saturate(.4);transform:scale(.96)}
.role.on{border-color:var(--ink);transform:translateY(-3px);box-shadow:0 22px 40px -24px rgba(70,45,20,.45)}
.role.on .rhz{color:var(--red)}
.role-form{animation:rise2 .45s cubic-bezier(.2,.9,.3,1) both;opacity:0;transform:translateY(10px)}
.demo-enter{margin-top:22px;padding:18px;border-radius:22px;border:1.5px dashed #DCCBB0;background:rgba(255,254,251,.5)}
.demo-enter p{font-size:13.5px;color:var(--ink-2);margin-bottom:12px}
.join-hero{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
@media (max-width:900px){
  .landing{grid-template-columns:1fr;padding-top:70px;gap:0}
  .stage3d{height:330px}
  .ftile{left:calc(50% + var(--x) * 38vw);top:calc(50% + var(--y) * 135px);padding:8px 12px 9px;border-radius:15px}
  .ftile b{font-size:21px}.ftile span{font-size:10.5px}
  .hero-mark .mark{width:170px}
  .signin{padding-bottom:30px}
}
.main{animation:pagein .45s cubic-bezier(.2,.9,.3,1) both}
@keyframes pagein{from{opacity:0;transform:translateY(8px)}}
/* featured assignment (student) */
.feature{position:relative;overflow:hidden;border-radius:30px;padding:28px;color:#FFF7F2;background:radial-gradient(120% 140% at 100% 0%,#D23A2C 0%,#B01F1A 45%,#7E1410 100%);box-shadow:0 30px 60px -30px rgba(140,22,14,.6);cursor:pointer}
.feature .fhz{position:absolute;right:-10px;bottom:-40px;font-family:var(--hz);font-size:220px;font-weight:700;color:rgba(255,255,255,.1);line-height:1;pointer-events:none}
.feature h2{font-size:clamp(26px,4vw,36px);letter-spacing:-.03em}
.feature .bar{background:rgba(255,255,255,.2)}.feature .bar i{background:#fff}
.feature .btn{background:#FFF7F2;color:var(--red);border-color:transparent}
.feature > *:not(.fhz){position:relative}
.side .lockup-type b{letter-spacing:.15em;white-space:nowrap;font-size:11.5px}
.role b,.role small{position:relative;z-index:1}
.role .rhz{z-index:0;opacity:.8}
@media (min-width:861px){.demo-pill{top:auto;bottom:18px;right:18px}}
.spot-item{white-space:nowrap}

/* ---------- badges, grading, reports ---------- */
.badge{margin-left:auto;min-width:20px;height:20px;padding:0 6px;border-radius:99px;background:var(--red);color:#fff;font-size:11.5px;font-weight:700;display:inline-grid;place-items:center;font-family:var(--ui)}
.tabbar .ico{position:relative}
.badge.dot{position:absolute;top:-4px;right:-12px;margin:0;min-width:17px;height:17px;font-size:10px}
.ellipsis{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cell.pend{background:#F6EDD9;color:#B88A3B;animation:pendpulse 2s ease-in-out infinite}
@keyframes pendpulse{50%{box-shadow:0 0 0 4px rgba(184,138,59,.18)}}
.stars{display:inline-flex;gap:4px}
.stars button{width:26px;height:26px;border-radius:50%;border:1.5px solid var(--line);background:#fff;color:transparent;cursor:pointer;font-size:0;padding:0;transition:transform .1s}
.stars button.on{background:var(--red);border-color:var(--red)}
.stars button:active{transform:scale(.9)}
.answer{padding:12px 0;border-top:1px solid var(--line-2)}
.answer:first-of-type{border-top:0;padding-top:0}
.grade-box{align-items:center;padding:16px;border-radius:20px;background:var(--paper)}
.grade-letter{width:76px;height:76px;border-radius:50%;background:var(--ink);color:#FFF8F2;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:30px;font-weight:600;letter-spacing:-.02em;flex:none}
.grade-letter small{font-size:11px;font-weight:500;opacity:.75;letter-spacing:0}
.grade-letter.big{width:112px;height:112px;font-size:46px;background:radial-gradient(120% 120% at 30% 20%,#D23A2C,#B01F1A 55%,#7E1410);box-shadow:0 20px 40px -20px rgba(140,22,14,.7)}
.report{background:var(--card);border:1px solid var(--line);border-radius:30px;padding:clamp(22px,4vw,44px);box-shadow:var(--shadow);max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:26px}
.report.sheet{width:794px;border-radius:0;box-shadow:none;border:0;max-width:none}
.report-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.report-hero{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.report-sec h3{font-size:13px;font-weight:600;color:var(--ink-3);margin-bottom:12px;letter-spacing:.02em}
.rubric,.rsteps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px 28px}
.rsteps > div,.rubric > div{padding:8px 0;border-bottom:1px solid var(--line-2)}
.rdots{display:inline-flex;gap:5px}
.rdots i{width:11px;height:11px;border-radius:50%;background:var(--line)}
.rdots i.on{background:var(--red)}
.ranswer{padding:14px 16px;border-radius:16px;background:var(--paper)}
.report-note{position:relative;padding:22px 24px;border-radius:22px;background:var(--red-soft);color:var(--red-deep)}
.report-note p{font-size:18px;line-height:1.55;font-weight:500}
.report-note span{display:block;margin-top:10px;font-family:var(--hz);font-weight:600;color:var(--red)}
/* notifications */
.notif{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:20px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);text-decoration:none;color:inherit;animation:rise .4s cubic-bezier(.2,.9,.3,1)}
.notif-ico{width:44px;height:44px;display:grid;place-items:center;flex:none}
/* messages */
.thread{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:18px;text-decoration:none;color:inherit}
.thread:hover{background:var(--line-2)}
.thread .av{width:42px;height:42px;border-radius:50%;background:var(--red-soft);color:var(--red);display:grid;place-items:center;font-weight:700;flex:none}
.chat{display:flex;flex-direction:column;height:calc(100vh - 80px);max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);overflow:hidden}
.chat-head{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line)}
.chat-body{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:8px;background:linear-gradient(var(--paper),#FFFEFB)}
.chat-time{align-self:center;font-size:12px;color:var(--ink-3);margin:10px 0 4px}
.bubble{max-width:78%;padding:10px 15px;border-radius:20px;font-size:15.5px;line-height:1.45;word-wrap:break-word;animation:rise .25s ease}
.bubble.me{align-self:flex-end;background:var(--red);color:#FFF8F2;border-bottom-right-radius:6px}
.bubble.them{align-self:flex-start;background:#fff;border:1px solid var(--line);border-bottom-left-radius:6px}
.chat-input{display:flex;gap:10px;padding:12px;border-top:1px solid var(--line);align-items:flex-end;background:#fff}
.chat-input textarea{min-height:46px;max-height:140px;resize:none;border-radius:22px;padding:11px 16px;line-height:1.4}
@media (max-width:860px){.chat{height:calc(100vh - 190px - var(--safe-b));border-radius:22px}}

/* ---------- avatars, chat attachments, voice ---------- */
.av{width:42px;height:42px;border-radius:50%;background:var(--red-soft);color:var(--red);display:grid;place-items:center;font-weight:600;font-size:14.5px;letter-spacing:.04em;flex:none}
.av.teacher{background:var(--red);color:#fff}
.chat-head .av{width:40px;height:40px}
.thread .av{width:44px;height:44px}
.bubble a{color:inherit;text-decoration:underline}
.bubble.voice{display:flex;align-items:center;gap:10px;padding:8px 14px 8px 8px;min-width:220px;--p:0}
.vplay{width:36px;height:36px;border-radius:50%;border:0;cursor:pointer;font-size:13px;flex:none;background:rgba(255,255,255,.22);color:inherit}
.bubble.them .vplay{background:var(--red);color:#fff}
.wave{display:flex;align-items:center;gap:2px;height:28px;flex:1;-webkit-mask:linear-gradient(90deg,#000 calc(var(--p)*100%),rgba(0,0,0,.45) 0);mask:linear-gradient(90deg,#000 calc(var(--p)*100%),rgba(0,0,0,.45) 0)}
.wave i{flex:1;min-width:2px;border-radius:2px;background:currentColor}
.vdur{font-size:12px;opacity:.85;font-variant-numeric:tabular-nums}
.acard,.lcard{display:flex;flex-direction:column;gap:2px;text-decoration:none!important;min-width:230px;max-width:300px;padding:14px 16px;position:relative;overflow:hidden}
.acard{background:radial-gradient(120% 140% at 100% 0%,#D23A2C,#B01F1A 50%,#7E1410)!important;color:#FFF7F2!important;border:0!important}
.acard small,.lcard small{font-size:11px;opacity:.75;font-weight:600;letter-spacing:.04em}
.acard b,.lcard b{font-size:16px}
.acard-hz{position:absolute;right:-6px;bottom:-22px;font-family:var(--hz);font-size:90px;font-weight:700;opacity:.14;line-height:1}
.acard-go{margin-top:8px;align-self:flex-start;background:#FFF7F2;color:var(--red);font-weight:600;font-size:13px;padding:6px 14px;border-radius:99px}
.lcard{background:#fff!important;color:var(--ink)!important;border:1px solid var(--line)!important}
.bubble.me.lcard{border-color:var(--red)!important}
.chat-input .icon-btn{flex:none;width:44px;height:44px;font-size:18px}
.recbar{display:flex;align-items:center;gap:12px;padding:12px 16px;border-top:1px solid var(--line);background:#fff}
.recdot{width:12px;height:12px;border-radius:50%;background:var(--red);animation:pulse 1.2s infinite}
#rect{font-variant-numeric:tabular-nums;font-weight:600}
.pick-row{display:flex;align-items:center;gap:14px;padding:12px 14px;border:1px solid var(--line);border-radius:16px;background:#fff;cursor:pointer;width:100%}
.pick-row:hover{border-color:var(--red)}
/* studio */
.srow{display:flex;align-items:center;gap:16px;padding:14px 18px;border-radius:22px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);transition:border-color .2s,box-shadow .2s}
.srow.has{border-color:#CFE2D7}
.srow.live{border-color:var(--red);box-shadow:0 0 0 4px var(--red-soft)}
.sword{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.simg{width:64px;height:64px;border-radius:16px;border:1.5px dashed #DCCBB0;display:grid;place-items:center;cursor:pointer;overflow:hidden;flex:none;background:var(--paper)}
.simg span{font-size:11px;color:var(--ink-3);text-align:center}
.simg img,.wpic{width:100%;height:100%;object-fit:cover;border-radius:14px;display:block;margin:0 auto}
.studio-count .ring{width:70px;height:70px}.studio-count .ring i{width:56px;height:56px}
@media (max-width:600px){.srow{flex-wrap:wrap}.srow .row{width:100%;justify-content:flex-end}}

/* ---------- game tiles ---------- */
.game-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.game-tile{position:relative;overflow:hidden;min-height:210px;border:0;border-radius:28px;padding:18px;text-align:left;color:#fff;cursor:pointer;display:flex;flex-direction:column;justify-content:flex-end;box-shadow:0 24px 44px -26px rgba(40,20,10,.55);transition:transform .35s cubic-bezier(.2,.9,.3,1),box-shadow .3s}
.game-tile:hover{transform:translateY(-4px)}
.game-tile.sel{box-shadow:0 0 0 3px var(--paper),0 0 0 6px var(--ink),0 24px 44px -26px rgba(40,20,10,.55)}
.game-tile .gt-art{position:absolute;inset:0 0 auto 0;height:68%;display:grid;place-items:center}
.game-tile .gt-art svg{width:86%;height:100%}
.game-tile .gt-hz{position:absolute;right:14px;top:8px;font-family:var(--hz);font-size:30px;opacity:.5;font-weight:700}
.game-tile .gt-txt{position:relative}
.game-tile h3{font-size:19px}
.game-tile p{opacity:.85;margin-top:2px}
.gt-boat{background:linear-gradient(170deg,#2E8C86 0%,#1C5A5E 60%,#123E42 100%)}
.gt-lantern{background:linear-gradient(170deg,#1A2350 0%,#3A2558 55%,#6A2B43 100%)}
.gt-race{background:linear-gradient(170deg,#C9372A,#7E1410)}
.gt-snap{background:linear-gradient(170deg,#3A8063,#173D30)}
.gt-spot{background:linear-gradient(170deg,#3B5FA0,#18294A)}
.gt-memory{background:linear-gradient(170deg,#C79A45,#6E4F1C)}

/* ---------- game scenes ---------- */
.game-body{position:relative}
.en-face{display:flex;flex-direction:column;align-items:center}
.sm-rec{width:84px!important;height:84px!important;font-size:28px!important}
.river{position:relative;height:clamp(260px,46vw,380px);border-radius:28px;overflow:hidden;box-shadow:var(--shadow);margin-bottom:14px}
.river .scene{position:absolute;inset:0;width:100%;height:100%}
.waves{position:absolute;left:0;right:0;top:30%;bottom:0;background:repeating-linear-gradient(170deg,rgba(255,255,255,.0) 0 26px,rgba(255,255,255,.12) 26px 28px),radial-gradient(circle at 20% 40%,rgba(255,255,255,.12),transparent 40%);background-size:180px 100%,100% 100%;animation:flow 6s linear infinite}
@keyframes flow{to{background-position:-180px 0,0 0}}
.finish{position:absolute;right:4%;top:28%;bottom:0;width:10px;background:repeating-linear-gradient(#fff 0 12px,#B01F1A 12px 24px);box-shadow:0 0 0 2px rgba(0,0,0,.12)}
.finish span{position:absolute;top:-34px;left:-8px;width:26px;height:34px;background:linear-gradient(#E8B94A,#B88A3B);clip-path:polygon(0 0,100% 0,100% 70%,50% 100%,0 70%)}
.lanes{position:absolute;left:2%;right:6%;top:31%;bottom:4%;display:flex;flex-direction:column;justify-content:space-around}
.lane{position:relative;flex:1;border-bottom:1.5px dashed rgba(255,255,255,.22)}
.lane:last-child{border-bottom:0}
.boat{position:absolute;bottom:2px;left:0;width:150px;transition:left 1.1s cubic-bezier(.3,.8,.3,1);animation:bob 2.6s ease-in-out infinite}
.boat-svg{width:100%;height:auto;display:block;filter:drop-shadow(0 6px 6px rgba(0,30,30,.35))}
.boat-name{position:absolute;left:30px;top:-14px;font-size:11.5px;font-weight:600;color:#fff;background:rgba(0,0,0,.28);padding:1px 8px;border-radius:99px;white-space:nowrap}
.boat-name.me{background:var(--red)}
@keyframes bob{50%{transform:translateY(-3px) rotate(-.6deg)}}
.boat.rowing .paddle{animation:row .45s ease-in-out infinite}
.boat.rowing .drumstick{animation:drum .22s ease-in-out infinite}
@keyframes row{50%{transform:rotate(-38deg)}}
@keyframes drum{50%{transform:rotate(30deg)}}
.lanes .lane:only-child .boat{width:190px}
.qpanel{background:var(--card);border:1px solid var(--line);border-radius:26px;padding:18px;box-shadow:var(--shadow)}
.q-prompt{text-align:center;min-height:120px;display:flex;flex-direction:column;align-items:center;justify-content:center;margin:6px 0 16px}
.q-done{text-align:center;font-size:20px;padding:26px}
.night{position:relative;height:min(74vh,640px);min-height:470px;border-radius:30px;overflow:hidden;box-shadow:0 30px 60px -30px rgba(20,10,40,.7);user-select:none}
.night .scene{position:absolute;inset:0;width:100%;height:100%}
.twinkle{animation:twinkle 3.6s ease-in-out infinite}
@keyframes twinkle{50%{opacity:.15}}
.sky{position:absolute;inset:0}
.lantern{position:absolute;bottom:-30%;width:clamp(74px,17vw,104px);transform:translateX(-50%);border:0;background:none;padding:0;cursor:pointer;animation-name:rise3;animation-timing-function:linear;animation-fill-mode:both;-webkit-tap-highlight-color:transparent}
.lantern svg{width:100%;height:auto;display:block;animation:sway 3.4s ease-in-out infinite alternate;transform-origin:50% 0}
.lglow{position:absolute;left:50%;top:44%;width:160%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(circle,rgba(255,170,90,.45),rgba(255,120,60,0) 62%);pointer-events:none}
@keyframes rise3{from{bottom:-30%}to{bottom:118%}}
@keyframes sway{from{transform:rotate(calc(var(--tilt) * -1))}to{transform:rotate(var(--tilt))}}
.lantern.miss svg{filter:grayscale(.85) brightness(.6)}
.lantern.miss .lglow{opacity:0}
.lantern.fade{opacity:.25;transition:opacity .6s}
.lantern.burst{animation-play-state:paused}
.lantern.burst svg{animation:burst .8s ease forwards}
@keyframes burst{40%{transform:scale(1.25);filter:brightness(1.5)}100%{transform:scale(1.1);filter:brightness(1.25)}}
.lprompt{position:absolute;left:50%;top:18px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:4px;padding:14px 22px;border-radius:22px;background:rgba(255,248,236,.92);backdrop-filter:blur(8px);box-shadow:0 18px 40px -20px rgba(0,0,0,.6);text-align:center;min-width:220px;max-width:88%}
.lp-main{font-size:24px;font-weight:600}
.lp-main.hz{font-size:40px}
.lprompt span{font-size:13px;color:var(--ink-2)}
/* restyled classic games */
.gb-race,.gb-snap,.gb-spot,.gb-memory{border-radius:28px;padding:18px;box-shadow:var(--shadow)}
.gb-race{background:linear-gradient(180deg,#FFF9F2,#F7EBDD);border:1px solid var(--line)}
.gb-snap{background:radial-gradient(120% 90% at 50% 0%,#3E8A6B,#1E4F3D);color:#fff}
.gb-snap .small.faint{color:rgba(255,255,255,.75)}
.gb-spot{background:radial-gradient(120% 90% at 50% 0%,#33508C,#141F3D);color:#fff}
.gb-spot .spot-card{background:#FFFBF3;color:var(--ink);border:0;box-shadow:0 20px 40px -20px rgba(0,0,0,.6),inset 0 0 0 8px #F2E6D0}
.gb-spot .spot-card.mine{box-shadow:0 20px 40px -20px rgba(0,0,0,.6),inset 0 0 0 8px #E8B94A}
.gb-spot .small.faint{color:rgba(255,255,255,.75)}
.gb-memory{background:repeating-linear-gradient(45deg,#7E5A20 0 14px,#875F24 14px 28px);}
.gb-memory .mem-f{background:radial-gradient(circle at 50% 40%,#C9372A,#8E1510);box-shadow:inset 0 0 0 4px #8E1510,inset 0 0 0 6px #E8B94A}
.pcard{background:#FFFBF3;box-shadow:0 18px 30px -14px rgba(0,0,0,.5),inset 0 0 0 7px #F2E6D0}
.gb-snap .pcard{color:var(--ink)}
.quick{display:flex;gap:10px;overflow-x:auto;margin:0 0 22px;padding-bottom:4px;scrollbar-width:none}
.quick-btn{display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:999px;background:var(--card);border:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:500;white-space:nowrap;box-shadow:var(--shadow);transition:transform .2s}
.quick-btn:hover{transform:translateY(-2px);border-color:#DCCBB0}
.quick-btn .hz{color:var(--red);font-size:18px}
.start-card{margin-bottom:20px;background:linear-gradient(180deg,#FFFEFB,#FBF5EC)}
.start-steps{display:flex;flex-direction:column}
.sstep{display:flex;align-items:center;gap:14px;padding:14px 0;border-top:1px solid var(--line-2)}
.sstep:first-child{border-top:0}
.snum{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-weight:600;background:var(--line-2);color:var(--ink-2);flex:none}
.sstep.ok .snum{background:var(--jade);color:#fff}
.sstep.ok b{color:var(--ink-3);text-decoration:line-through;text-decoration-color:rgba(0,0,0,.2)}
.boat{width:clamp(84px,calc(300px / var(--n,1) + 30px),150px)}
@media (max-width:600px){.boat{width:clamp(70px,calc(200px / var(--n,1) + 30px),120px)}.boat-name{font-size:10px;top:-10px;left:18px}}
.packet .ph{font-size:13px;font-weight:600;color:#958A7E;margin:18px 0 8px;letter-spacing:.02em}
.packet .pwords{width:100%;border-collapse:collapse}
.packet .pwords td{border-bottom:1px solid #EFE6D6;padding:6px 8px;vertical-align:middle;font-size:14px}
.sq.sm{width:42px;height:42px;margin-right:3px}
.sq.sm b{font-size:32px}
.qr{display:flex;flex-direction:column;align-items:center;gap:3px}
.qr svg{width:78px;height:78px}
.qr span{font-size:9.5px;color:#8F857A}

/* ---------- icon buttons ---------- */
.fab{width:52px;height:52px;border-radius:50%;background:var(--red);border:0;display:grid;place-items:center;cursor:pointer;flex:none;box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 12px 24px -12px rgba(176,31,26,.8);transition:transform .2s cubic-bezier(.2,.9,.3,1)}
.fab:hover{transform:scale(1.06)}.fab:active{transform:scale(.94)}
.plus-dot{width:26px;height:26px;border-radius:50%;background:var(--red);color:#fff;display:inline-grid;place-items:center;font-size:16px;font-weight:700;flex:none}
.plus-dot.big{width:64px;height:64px;box-shadow:0 14px 28px -14px rgba(176,31,26,.8)}
.plus-dot.big svg{width:30px;height:30px}
.add-tile{border:2px dashed #DCCBB0;border-radius:var(--r-lg);min-height:150px;display:grid;place-items:center;text-decoration:none;background:rgba(255,254,251,.45);transition:border-color .2s,background .2s}
.add-tile:hover{border-color:var(--red);background:var(--card)}
/* swipe to delete */
.swipe{position:relative;border-radius:var(--r-lg);overflow:hidden}
.swipe-del{position:absolute;right:0;top:0;bottom:0;width:96px;border:0;background:var(--red);color:#fff;font-weight:600;cursor:pointer;border-radius:0 var(--r-lg) var(--r-lg) 0}
.swipe-card{position:relative;z-index:1;touch-action:pan-y;user-select:none;height:100%}
.wthumb{width:36px;height:36px;border-radius:9px;object-fit:cover}
.x{border:0;background:var(--line-2);color:var(--ink-2);width:22px;height:22px;border-radius:50%;cursor:pointer;font-size:14px;line-height:1;display:inline-grid;place-items:center;flex:none}
.x:hover{background:var(--red-soft);color:var(--red)}
.simg-wrap{position:relative}
.simg-x{position:absolute;top:-6px;right:-6px;background:#fff;box-shadow:var(--shadow)}
/* ---------- builder ---------- */
.builder{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:28px;align-items:start}
.b-left{display:flex;flex-direction:column;gap:18px;min-width:0}
.b-right{position:sticky;top:24px}
.title-input{border:0;background:transparent;font:inherit;font-size:clamp(28px,4vw,40px);font-weight:600;letter-spacing:-.03em;padding:4px 0;outline:none;width:100%;border-bottom:2px solid transparent}
.title-input:focus{border-bottom-color:var(--red)}
.pill-toggle{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;font-weight:500;font-size:14px;cursor:pointer;text-decoration:none;color:var(--ink);display:inline-flex;gap:6px;align-items:center;transition:all .15s}
.pill-toggle.sm{padding:5px 11px;font-size:13px}
.pill-toggle.on{background:var(--red);border-color:var(--red);color:#fff}
.pill-toggle.on .faint{color:rgba(255,255,255,.75)}
.pill-toggle.add{border-style:dashed;color:var(--red);font-weight:700}
.wordwrap{display:flex;flex-wrap:wrap;gap:6px}
.word-chip .x{margin-left:2px}
.steps-list{display:flex;flex-direction:column;gap:8px;border-radius:18px;padding:4px;transition:background .2s,outline-color .2s;outline:2px dashed transparent;outline-offset:2px}
.steps-list.dropping{background:var(--red-soft);outline-color:var(--red)}
.step-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1.5px solid var(--line);border-radius:18px;background:#fff;cursor:pointer;transition:border-color .15s,box-shadow .15s,transform .15s}
.step-row.sel{border-color:var(--red);box-shadow:0 0 0 4px var(--red-soft)}
.step-row.dragging{z-index:5;position:relative;box-shadow:0 20px 40px -18px rgba(0,0,0,.4);transition:none}
.step-row.gap-above{margin-top:22px}
.grip{cursor:grab;color:var(--ink-3);font-size:16px;letter-spacing:-3px;padding:8px 4px;touch-action:none;user-select:none}
.step-num{width:24px;height:24px;border-radius:50%;background:var(--line-2);font-size:12px;font-weight:700;display:grid;place-items:center;flex:none}
.step-art{width:72px;flex:none;display:block}
.step-art svg{width:100%;height:auto;display:block}
.step-art.lg{width:96px}
.drop-add{display:flex;align-items:center;justify-content:center;gap:10px;padding:16px;border:2px dashed #DCCBB0;border-radius:18px;background:transparent;cursor:pointer;color:var(--ink-2);font-weight:500}
.drop-add:hover{border-color:var(--red);color:var(--red)}
.palette-head{margin-top:8px}
.palette{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.pal-card{display:flex;flex-direction:column;gap:4px;text-align:left;padding:10px;border:1.5px solid var(--line);border-radius:18px;background:#fff;cursor:grab;transition:border-color .15s,transform .15s}
.pal-card:hover{border-color:var(--red);transform:translateY(-2px)}
.pal-card b{font-size:14px}
.pal-card .small{font-size:12px;line-height:1.35}
.pal-art svg{width:100%;height:auto;display:block}
.palette.in-modal .pal-card{cursor:pointer}
.char-toggle{min-width:40px;height:40px;padding:0 8px;border-radius:10px;border:1.5px solid var(--line);background:#fff;font-family:var(--hz);font-size:20px;font-weight:600;cursor:pointer}
.char-toggle.wide{font-size:16px}
.char-toggle.on{border-color:var(--red);background:var(--red-soft);color:var(--red)}
.game-tile.mini{min-height:110px;padding:10px;border-radius:18px}
.game-tile.mini .gt-art{height:62%}
.game-tile.mini b{font-size:13px}
.b-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px;position:sticky;bottom:96px;background:rgba(251,248,242,.94);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:999px;padding:8px;align-self:flex-end;box-shadow:var(--shadow);z-index:5}
.mobile-only{display:none}
.phone{width:100%;max-width:380px;margin:0 auto;border-radius:44px;background:#1E1A16;padding:12px;box-shadow:0 40px 80px -40px rgba(40,20,10,.6)}
.phone-top{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 12px 10px;color:#fff}
.phone-top .muted{color:rgba(255,255,255,.7)!important;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-btn.sm{width:30px;height:30px;font-size:16px;background:rgba(255,255,255,.1);border-color:transparent;color:#fff}
.phone-screen{background:var(--paper);border-radius:32px;height:min(70vh,640px);overflow-y:auto;padding:12px}
.phone-screen .stage{min-height:100%;border-radius:24px;padding:18px 14px;box-shadow:none}
.phone-screen .opts{grid-template-columns:1fr 1fr}
.phone-screen .prompt-hz{font-size:72px}
.pv-empty{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center}
.stage-inner{display:flex;flex-direction:column;flex:1}
.step-inst{background:var(--paper);border-radius:14px;padding:10px 14px;font-size:14px;margin-bottom:12px;color:var(--ink-2)}
@media (max-width:1100px){.builder{grid-template-columns:1fr}.b-right{display:none}.mobile-only{display:inline-flex}}
/* ---------- chat tabs / groups ---------- */
.chat-tabs{display:flex;gap:6px;padding:10px 14px 0;border-bottom:1px solid var(--line)}
.chat-tabs a{padding:10px 14px;border-radius:12px 12px 0 0;text-decoration:none;color:var(--ink-2);font-weight:600;font-size:14px;display:inline-flex;gap:6px;align-items:center;border-bottom:2px solid transparent}
.chat-tabs a.on{color:var(--red);border-bottom-color:var(--red)}
.chat-tabs .badge{margin-left:4px}
.bname{font-size:11.5px;color:var(--ink-3);margin:6px 0 -4px 10px;font-weight:600}
.bname.t{color:var(--red)}
.av.grp{color:#fff;background:var(--red);border-radius:14px}
.to-class{padding:12px;border:1px solid var(--line);border-radius:16px;background:#fff}
/* ---------- game juice ---------- */
.countdown{position:absolute;inset:0;z-index:20;display:grid;place-items:center;background:rgba(30,26,22,.45);backdrop-filter:blur(3px);border-radius:28px}
.cd-num{font-size:clamp(90px,22vw,170px);font-weight:700;color:#fff;font-family:var(--hz);text-shadow:0 10px 40px rgba(0,0,0,.4);animation:cdpop .9s cubic-bezier(.2,1.4,.4,1) both}
@keyframes cdpop{0%{transform:scale(2.2);opacity:0}40%{transform:scale(.9);opacity:1}100%{transform:scale(1)}}
.pl{position:relative}
.float-pts{position:absolute;right:-6px;top:-8px;font-weight:800;color:var(--jade);font-size:16px;animation:floatup 1.1s ease-out forwards;pointer-events:none}
@keyframes floatup{to{transform:translateY(-34px);opacity:0}}
.streak{position:fixed;left:50%;top:22%;transform:translateX(-50%);z-index:60;background:linear-gradient(135deg,#FF8A3D,#B01F1A);color:#fff;padding:12px 22px;border-radius:999px;font-weight:700;font-size:18px;box-shadow:0 18px 40px -16px rgba(176,31,26,.8);animation:streak 1.5s cubic-bezier(.2,1.2,.4,1) forwards;pointer-events:none}
.streak b{font-size:26px;margin-right:4px}
@keyframes streak{0%{transform:translateX(-50%) scale(.4);opacity:0}15%{transform:translateX(-50%) scale(1.1);opacity:1}25%{transform:translateX(-50%) scale(1)}80%{opacity:1}100%{opacity:0;transform:translateX(-50%) translateY(-20px)}}
.game-body.shake{animation:shake .4s}
.opt.right{animation:pop .35s cubic-bezier(.2,1.4,.4,1)}
@keyframes pop{50%{transform:scale(1.06)}}
.pl.lead .av{box-shadow:0 0 0 3px #F2C35A}
@media (min-width:861px){.b-actions{bottom:20px}}