:root{
  --bg:#061521;--panel:#0c2234;--panel2:#102b42;--text:#eff8ff;--muted:#9db3c5;--line:#284861;
  --danger:#d44848;--wait:#b8e8ff;--learn:#ef7d32;--blue:#4c9fe8;--new:#b8e8ff;
  --radius:20px;--shadow:0 18px 45px rgba(0,0,0,.30)
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:radial-gradient(circle at 50% -10%,#123958 0,#071624 43%,#04101b 100%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
body{min-height:100vh}
button,input{font:inherit} button{cursor:pointer}
.app{width:min(100%,1420px);margin:0 auto;padding:12px 12px 34px}
.topbar{display:flex;align-items:center;gap:9px;margin-bottom:10px}
.brand{font-weight:950;letter-spacing:.08em;font-size:14px;flex:1;display:flex;align-items:center;gap:9px}.brand-logo{width:44px;height:42px;object-fit:contain;display:block}.brand-copy{line-height:1.05}.brand-copy small{display:block;font-size:9px;letter-spacing:.16em;color:var(--muted);margin-top:3px}
.icon-btn,.secondary{border:1px solid var(--line);background:#0a1e2f;color:var(--text);border-radius:12px;padding:9px 12px}body:not(.learning-active) #homeBtn{display:none}.screen{display:none}.screen.active{display:block}.hidden{display:none!important}
.panel{background:rgba(13,34,52,.94);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:17px}.hero{text-align:center;padding:22px 16px}.hero h1{font-size:clamp(27px,6vw,42px);line-height:1.04;margin:0 0 9px}.muted{color:var(--muted)}.small{font-size:13px}
.home-tools{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:14px}.link-btn{border:1px solid var(--line);background:#102b42;color:var(--text);border-radius:999px;padding:9px 13px;font-weight:800}
.pack-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(205px,1fr));gap:12px;margin-top:14px}.pack-item{background:#0a1e2f;border:1px solid var(--line);border-radius:17px;overflow:hidden}.pack-demo{display:block;width:100%;padding:0;border:0;background:transparent;color:var(--text);text-align:left}.pack-demo:hover .pack-cover{filter:brightness(1.06)}.pack-cover{width:100%;aspect-ratio:1/1;object-fit:cover;display:block;background:#102b42;transition:.16s}.pack-body{padding:12px 13px}.pack-title{font-size:17px;font-weight:900}.pack-meta{font-size:12px;color:var(--muted);margin-top:4px}.pack-try{font-size:13px;font-weight:850;margin-top:8px;color:#dcefff}
.pack-buy-row{display:grid;grid-template-columns:1fr;gap:7px;padding:0 12px 12px}.buy-btn,.primary,.know,.dontknow,.grade-btn{border:0;border-radius:14px;padding:13px 16px;font-weight:850}.buy-btn,.primary{background:#eaf6ff;color:#082035}.owned-btn{background:#15344d;color:#dcefff;border:1px solid var(--line);cursor:default}
.all-buy{margin-top:14px;width:100%;font-size:16px}
.learn-screen{position:relative;isolation:isolate}.learn-screen.checkpoint-mode{border-radius:24px;overflow:hidden}.learn-screen.checkpoint-mode:before{content:"KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL   KIIRE KONTROLL";position:absolute;inset:0;z-index:-2;padding:22px 8px;font-size:42px;font-weight:1000;line-height:1.65;letter-spacing:.06em;word-spacing:.18em;color:rgba(255,255,255,.065);background:#000;transform:rotate(-7deg) scale(1.12);transform-origin:center;pointer-events:none;overflow:hidden}.learn-screen.checkpoint-mode:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(5,16,28,.74),rgba(5,16,28,.22) 28%,rgba(5,16,28,.12) 50%,rgba(5,16,28,.22) 72%,rgba(5,16,28,.74));pointer-events:none} .learn-header{position:sticky;top:0;z-index:30;padding:5px 0 9px;background:linear-gradient(#071624 68%,transparent)}
.learn-back{position:absolute;left:0;top:3px;z-index:5}
body.learning-active>.app>.topbar{display:none}
.rank-shell{position:relative;width:min(100%,780px);margin:0 auto}.rank-line{display:grid;grid-template-columns:minmax(72px,auto) 1fr minmax(72px,auto);align-items:center;gap:10px}.rank-name{font-weight:900;font-size:12px}.rank-target{border:0;background:transparent;color:var(--text);font-weight:950;font-size:12px;text-align:right;padding:6px 0;cursor:pointer}.rank-track{height:15px;border-radius:999px;background:linear-gradient(90deg,#1677ff 0%,#e33b3b 100%);border:1px solid rgba(255,255,255,.18);position:relative;overflow:visible}.rank-ticks{position:absolute;inset:0;pointer-events:none;overflow:visible}.rank-tick{position:absolute;top:50%;width:3px;height:20px;background:#10283b;transform:translate(-50%,-50%);border-radius:3px;opacity:.9}.rank-tick-label{position:absolute;top:20px;transform:translateX(-50%);font-size:10px;font-weight:900;white-space:nowrap;color:#fff;text-shadow:0 1px 3px #000}.rank-mask{position:absolute;right:0;top:0;bottom:0;background:rgba(2,12,20,.68);border-radius:0 999px 999px 0;transition:width .35s}.rank-marker{position:absolute;top:50%;width:19px;height:19px;border-radius:50%;background:#fff;border:3px solid #0b1c2c;transform:translate(-50%,-50%);box-shadow:0 0 0 2px rgba(255,255,255,.28);transition:left .35s}.rank-caption{text-align:center;color:var(--muted);font-size:12px;margin-top:4px}
.rank-pop{position:absolute;right:0;top:calc(100% + 7px);width:min(340px,94vw);z-index:80;background:linear-gradient(180deg,#0a1830,#061320);border:1px solid #65508e;border-radius:18px;padding:12px;box-shadow:0 18px 45px rgba(0,0,0,.52);display:none}.rank-pop.show{display:block}.rank-pop-title{text-align:center;font-size:12px;font-weight:950;letter-spacing:.16em;color:#e8d9ff;margin-bottom:8px}.rank-step{display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:8px;padding:7px 9px;margin:4px 0;border:1px solid rgba(255,255,255,.08);border-radius:999px;background:linear-gradient(90deg,rgba(45,39,96,.9),rgba(24,42,79,.9));font-size:12px}.rank-step.current{border-color:#f0d58f;background:linear-gradient(90deg,rgba(109,72,127,.95),rgba(42,73,122,.95));font-weight:950}.rank-step.done{opacity:.7}.rank-step .need{color:#e6d49e;font-weight:850}
@media(hover:hover) and (pointer:fine){.rank-target:hover{color:#f0d58f}}
.learning-panel{padding:4px;background:transparent;border:0;box-shadow:none}.learn-workspace{display:grid;grid-template-columns:minmax(170px,220px) minmax(440px,640px) minmax(170px,220px);gap:16px;align-items:center;justify-content:center}.learn-rail{min-width:0;align-self:stretch;display:flex;flex-direction:column;justify-content:center;gap:14px}.rail-brand{display:flex;align-items:center;justify-content:flex-start}.rail-brand img{width:min(96%,190px);height:auto;max-height:150px;object-fit:contain;display:block}.rail-brand-copy{display:none}.rail-nav{display:grid;grid-template-columns:1fr 1fr;gap:8px}.rail-nav button{width:100%}.learn-rail.left{text-align:left}.learn-rail.right{text-align:center}.learn-topline{display:block}.learn-title{font-weight:900;font-size:15px}.mode-label{font-size:12px;color:var(--muted);margin-top:4px}.mode-badge{font-size:14px;font-weight:950;letter-spacing:.08em;color:#dceaff}.checkpoint-mode .mode-label{display:none}.checkpoint-mode .mode-badge{display:block!important;background:rgba(6,18,34,.76);border:1px solid rgba(173,204,255,.28);border-radius:999px;padding:9px 12px;color:#fff}.checkpoint-mode .learning-panel{background:transparent;border:0}
.state-map{display:flex;flex-wrap:wrap;gap:5px;justify-content:flex-start;padding:0}.state-dot{width:13px;height:13px;border-radius:3px;background:var(--wait);border:1px solid rgba(255,255,255,.16)}.state-dot.locked{background:var(--danger)}.state-dot.current{outline:2px solid #fff;outline-offset:2px;transform:scale(1.08)}.state-legend{display:grid;gap:5px;margin-top:9px}.legend-row{display:grid;grid-template-columns:12px 1fr;gap:7px;align-items:center;font-size:10px;line-height:1.15;color:var(--muted)}.legend-dot{width:11px;height:11px;border-radius:3px;border:1px solid rgba(255,255,255,.16)}
.card-stage{display:grid;place-items:center;min-height:0;padding:0}.flash-wrap{width:min(100%,640px,calc((100dvh - 150px)*70/101));aspect-ratio:70/101;position:relative;touch-action:pan-y;max-height:calc(100dvh - 150px)}.flash-card{width:100%;height:100%;border-radius:17px;overflow:hidden;background:#fff;box-shadow:0 25px 64px rgba(0,0,0,.48);transform:scaleX(1);transform-origin:center;will-change:transform;user-select:none;-webkit-user-select:none;position:relative}.flash-card img{width:100%;height:100%;object-fit:cover;display:block;-webkit-user-drag:none;user-select:none;transform-origin:50% 50%;will-change:transform}.flash-card.flip-out{animation:flipOut .25s ease-in forwards}.flash-card.flip-in{animation:flipIn .25s ease-out forwards}@keyframes flipOut{from{transform:scaleX(1)}to{transform:scaleX(0)}}@keyframes flipIn{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.flash-card.answer-side{cursor:default}.swipe-stamp{position:absolute;padding:8px 12px;border:3px solid currentColor;border-radius:10px;font-size:20px;font-weight:1000;letter-spacing:.04em;opacity:0;pointer-events:none;z-index:4}.up-stamp{top:8%;left:50%;transform:translateX(-50%);color:#176a9d}.right-stamp{right:5%;top:45%;color:#174f85}.down-stamp{bottom:8%;left:50%;transform:translateX(-50%);color:#a06b12}.left-stamp{left:5%;top:45%;color:#b73f3f}.zoom-hint{position:absolute;left:50%;bottom:9px;transform:translateX(-50%);background:rgba(0,0,0,.58);color:#fff;border-radius:999px;padding:6px 9px;font-size:11px;pointer-events:none;white-space:nowrap}.flip-edge{position:absolute;top:0;bottom:0;width:14%;z-index:7;border:0;background:transparent;display:none}.flip-edge.left{left:0}.flip-edge.right{right:0}.flash-card.answer-side .flip-edge{display:block}.flip-edge:hover{background:linear-gradient(90deg,rgba(255,255,255,.09),transparent)}.flip-edge.right:hover{background:linear-gradient(270deg,rgba(255,255,255,.09),transparent)}.tap-hint{text-align:center;color:var(--muted);font-size:12px;margin:0;line-height:1.35}.answer-zone{min-height:116px;display:flex;flex-direction:column;justify-content:flex-start;gap:10px}.answer-buttons{display:grid;grid-template-columns:1fr;gap:10px;margin:0}.answer-buttons.hidden{display:grid!important;visibility:hidden;pointer-events:none}.answer-zone .tap-hint.hidden{display:block!important;visibility:hidden}.know,.dontknow,.grade-btn{font-size:14px;padding:11px 8px}.answer-cross{grid-template-columns:1fr 1fr 1fr;grid-template-areas:". up ." "left . right" ". down .";gap:6px}.grade-btn{border:0;border-radius:12px;font-weight:850;background:#eaf6ff;color:#082035}.grade-up{grid-area:up}.grade-left{grid-area:left}.grade-right{grid-area:right}.grade-down{grid-area:down}.side-label{font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:850;margin-bottom:3px}
.ad-card{width:min(100%,640px,calc((100dvh - 92px)*70/101));aspect-ratio:70/101;max-height:calc(100dvh - 92px);border-radius:17px;overflow:hidden;background:#112d45;border:1px solid #33566f;box-shadow:0 22px 56px rgba(0,0,0,.42);display:grid;place-items:center;position:relative}.ad-card img{width:100%;height:100%;object-fit:cover}.ad-fallback{position:absolute;inset:0;display:grid;place-items:center;text-align:center;background:linear-gradient(145deg,#173f5e,#0a1e2f)}.ad-tag{position:absolute;top:9px;right:9px;background:rgba(0,0,0,.56);border-radius:999px;padding:5px 8px;font-size:11px}
.overlay{position:fixed;inset:0;background:rgba(1,8,14,.84);display:none;align-items:center;justify-content:center;z-index:120;padding:16px}.overlay.show{display:flex}.overlay-card{position:relative;width:min(100%,520px);background:#0d2234;border:1px solid #355b78;border-radius:24px;padding:23px;text-align:center;box-shadow:0 25px 70px rgba(0,0,0,.58);max-height:90vh;overflow:auto}.reward-symbol{font-size:50px;margin-bottom:7px}.reward-title{font-size:28px;font-weight:950;margin-bottom:8px}.reward-sub{color:var(--muted);line-height:1.45;margin-bottom:16px}.session-number{text-align:center;font-size:42px;font-weight:950;margin:5px 0}.range-labels{display:flex;justify-content:space-between;gap:18px;color:var(--muted);font-size:12px;margin-top:7px}input[type=range]{width:100%;accent-color:#4ea5e8}.scroll-cue{position:sticky;bottom:-1px;margin:12px auto -8px;padding:8px 14px;border-radius:999px;background:rgba(7,22,36,.94);border:1px solid var(--line);font-size:12px;font-weight:850;color:#dcefff;width:max-content;box-shadow:0 -8px 20px rgba(0,0,0,.25)}.quick-buy{border-top:1px solid var(--line);margin-top:16px;padding-top:14px;display:grid;gap:8px}.buy-option{border:0;border-radius:13px;padding:12px 14px;text-align:left;font-weight:850}.buy-option strong,.buy-option span{display:block}.buy-option span{font-size:12px;opacity:.75;margin-top:2px}.buy-one{background:#eaf6ff;color:#082035}.buy-all{background:#15344d;color:var(--text);border:1px solid var(--line)}
.help-flow{text-align:left;display:grid;gap:18px;margin:12px 0}.help-card{width:min(100%,780px);text-align:left}.help-card .reward-title{text-align:center}.help-section h3{margin:0 0 7px;font-size:18px}.help-section p{margin:0 0 10px;line-height:1.55;color:#dce8f2}.help-section .rank-chain{font-weight:900;color:#fff;line-height:1.7}.help-section.admiral{padding-top:14px;border-top:1px solid var(--line)}.help-step{display:grid;grid-template-columns:34px 1fr;gap:10px;align-items:start}.help-num{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#173b59;font-weight:950}.help-step strong{display:block;margin-bottom:2px}.help-final{border-top:1px solid var(--line);padding-top:13px;margin-top:8px;font-weight:850}
.progress-list{display:grid;gap:9px}.progress-row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;background:#0a1e2f;border:1px solid var(--line);border-radius:15px;padding:12px}.progress-row .title{font-weight:850}.progress-row .detail{font-size:12px;color:var(--muted);margin-top:3px}.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.stat{background:#0a1e2f;border:1px solid var(--line);border-radius:13px;padding:11px}.stat strong{font-size:22px;display:block}.shop-actions{display:grid;gap:8px;margin-top:14px}
.pack-progress{margin-top:10px}.pack-progress-track{height:7px;border-radius:99px;background:#173047;overflow:hidden}.pack-progress-fill{height:100%;background:#5ca9e8;border-radius:99px}.pack-progress-text{display:flex;justify-content:space-between;gap:8px;margin-top:5px;font-size:11px;color:var(--muted)}
.stats-dashboard{display:grid;gap:12px;width:100%}.donut-wrap{display:grid;grid-template-columns:92px 1fr;gap:12px;align-items:center}.donut{width:92px;aspect-ratio:1;border-radius:50%;display:grid;place-items:center;position:relative;background:conic-gradient(var(--mastered) 0 var(--donepct),#173047 var(--donepct) 100%)}.donut:after{content:"";position:absolute;width:68%;height:68%;border-radius:50%;background:#071624}.donut-center{position:relative;z-index:2;text-align:center;font-weight:950;font-size:17px}.donut-center small{display:block;font-size:9px;color:var(--muted);font-weight:750}.memory-road{display:grid;grid-template-columns:repeat(6,1fr);gap:3px;align-items:end}.road-step{text-align:center;min-width:0}.road-bar{height:42px;border-radius:6px 6px 3px 3px;background:#173047;display:flex;align-items:flex-end;overflow:hidden}.road-fill{width:100%;min-height:3px;background:var(--review20)}.road-num{font-size:11px;font-weight:900;margin-top:3px}.road-label{font-size:8px;color:var(--muted);white-space:nowrap}.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}.metric{background:rgba(10,30,47,.82);border:1px solid var(--line);border-radius:12px;padding:9px;text-align:left}.metric strong{display:block;font-size:18px}.metric span{font-size:9px;color:var(--muted)}.metric[title]{cursor:help}.stats-dashboard{margin-top:42px}.demo-purchase{display:grid;gap:8px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);text-align:left}.demo-purchase p{margin:0;color:var(--muted);font-size:12px;line-height:1.4}.demo-purchase .buy-btn{width:100%}.series-card{width:min(100%,920px);text-align:left;position:relative}.overlay-close{position:absolute;right:13px;top:13px;border:1px solid var(--line);background:#091c2c;color:var(--text);width:38px;height:38px;border-radius:50%;font-size:20px;line-height:1}.series-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:18px}.series-item{background:#091c2c;border:1px solid var(--line);border-radius:14px;overflow:hidden}.series-open{display:block;width:100%;padding:0;border:0;background:transparent;color:var(--text);text-align:left}.series-open:hover img{filter:brightness(1.06)}.series-item img{width:100%;aspect-ratio:1/1;object-fit:cover;display:block}.series-info{padding:9px}.series-title{font-size:13px;font-weight:900}.series-meta{font-size:11px;color:var(--muted);margin-top:3px}.series-buy{margin-top:8px;width:100%;padding:9px 8px;font-size:12px}

details.dev{margin-top:16px;border-top:1px solid var(--line);padding-top:12px;color:var(--muted)}details.dev summary{cursor:pointer}.dev-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:7px;margin-top:9px}.dev-label{display:flex;align-items:center;gap:7px;font-size:12px}.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%) translateY(16px);opacity:0;background:#eaf6ff;color:#082035;border-radius:999px;padding:10px 15px;font-weight:850;z-index:150;transition:.2s}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.rank-pulse .rank-marker{animation:rankPulse 1.4s ease 2}.checkpoint-mode .rank-target{animation:targetPulse 1.15s ease-in-out infinite}@keyframes targetPulse{0%,100%{opacity:1;text-shadow:none}50%{opacity:.55;text-shadow:0 0 14px rgba(240,213,143,.95)}}@keyframes rankPulse{0%,100%{box-shadow:0 0 0 2px rgba(255,255,255,.28)}50%{box-shadow:0 0 0 10px rgba(240,213,143,.25)}}
@media(max-width:760px){.learn-header{padding-top:18px}.learn-back{display:none;top:4px;padding:5px 8px;font-size:0}.ios-device .learn-back{display:block}.ios-device .learn-back:after{content:"≪";font-size:22px;line-height:1}.learn-workspace{grid-template-columns:1fr;gap:8px}.learn-rail.left{order:1;display:grid;grid-template-columns:auto 1fr;align-items:center;gap:8px}.rail-brand{display:none}.state-legend{display:none}.card-stage{order:2}.learn-rail.right{order:3}.learn-topline{min-width:0}.state-map{justify-content:flex-end}.rail-nav{display:grid;grid-template-columns:1fr 1fr}.answer-buttons{grid-template-columns:1fr 1fr;position:sticky;bottom:6px;z-index:20}.tap-hint{margin:4px 0}.mode-badge{justify-self:end}.flash-wrap{width:min(100%,590px,calc((100dvh - 245px)*70/101));max-height:calc(100dvh - 245px)}}
@media(max-width:560px){.app{padding-left:6px;padding-right:6px}.panel{padding:10px}.hero{padding:18px 12px}.pack-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.pack-body{padding:9px}.pack-title{font-size:14px}.pack-meta,.pack-try{font-size:11px}.pack-buy-row{padding:0 8px 8px}.buy-btn{padding:11px 8px;font-size:13px}.learning-panel{padding:2px}.flash-wrap{width:min(100%,480px,calc((100dvh - 245px)*70/101));max-height:calc(100dvh - 245px)}.rank-name,.rank-target{font-size:10px}.rank-caption{font-size:11px}.topbar .icon-btn{padding:8px 9px;font-size:12px}.brand-copy small{display:none}.learn-screen.checkpoint-mode:before{font-size:30px;line-height:1.8}}
/* Alpha architecture additions */
.home-logo-wrap{display:flex;justify-content:center;align-items:center;padding:18px 12px 4px}.home-logo{width:min(240px,52vw);height:auto;display:block}.series-heading{margin:20px 2px 4px}.dev-info{margin-top:8px}.dev-button{margin-top:11px}.pack-item{height:var(--pack-card-height,auto);display:flex;flex-direction:column}.pack-demo{display:flex;flex-direction:column;flex:1}.pack-body{flex:1}.range-labels-three{display:grid;grid-template-columns:1fr 1fr 1fr;align-items:start}.range-labels-three span:nth-child(2){text-align:center}.range-labels-three span:last-child{text-align:right}.difficulty-copy{margin:10px auto 4px;max-width:440px}.difficulty-actions{display:flex;gap:9px;margin-top:18px}.difficulty-actions .primary{flex:1}.browse-nav{display:grid;grid-template-columns:1fr auto 1fr;gap:8px;align-items:center}.browse-header{text-align:center;font-weight:950;letter-spacing:.08em;padding:8px}.card-audio audio{width:100%;margin-top:6px}.reward-media img,.reward-media video,.media-card img,.media-card video{display:block;max-width:100%;max-height:62vh;margin:0 auto;border-radius:14px}.reward-media{margin-bottom:12px}.media-card{text-align:center}.media-skip-button{margin-top:12px}.help-close,.rank-close{margin-top:17px;width:100%}body.browse-active #rankShell{display:none}body.browse-active #browseHeader{display:block!important}body.browse-active #statePanel,body.browse-active #liveStats,body.browse-active #demoPurchase{display:none!important}

body.home-active>.app>.topbar{display:none}
body.browse-active #statePanel{display:block!important}
body.browse-active #liveStats,body.browse-active #demoPurchase{display:none!important}
.state-map button.state-dot{padding:0;cursor:pointer;appearance:none;-webkit-appearance:none}

/* Alpha 0.4.2: mobile learning order + first-run tutorial */
.tutorial-overlay{position:fixed;inset:0;z-index:1000;background:transparent;display:none;align-items:center;justify-content:center;cursor:pointer;touch-action:manipulation}
.tutorial-overlay.show{display:flex}
.tutorial-overlay img{display:block;width:100vw;height:100dvh;object-fit:contain;user-select:none;-webkit-user-select:none;-webkit-user-drag:none}
@media(max-width:760px){
  .learn-header{padding-top:32px;padding-bottom:6px}
  .learn-workspace{display:flex;flex-direction:column;gap:6px;align-items:stretch}
  .learn-rail.left{display:none}
  .card-stage{order:1}
  .learn-rail.right{order:2;display:flex;flex-direction:column;gap:6px;justify-content:flex-start}
  .learn-rail.right .rail-nav{display:none}
  .answer-zone{order:1;min-height:58px;gap:4px}
  .browse-nav{order:2}
  #statePanel{order:3;width:100%;margin-top:6px;padding:8px 2px 2px}
  #cardAudioWrap{order:4}
  #adContinueWrap{order:5}
  #liveStats{order:6}
  #demoPurchase{order:7}
  .state-map{justify-content:center;gap:6px}
  .state-dot{width:14px;height:14px}
  .state-legend{display:none}
  .side-label{text-align:center}
  .answer-buttons{grid-template-columns:1fr 1fr;position:static;gap:8px}
  .know,.dontknow{padding:13px 8px}
  .tap-hint{margin:2px 0 0}
  .flash-wrap{width:min(100%,520px,calc((100dvh - 205px)*70/101));max-height:calc(100dvh - 205px)}
  body.browse-active #statePanel{display:block!important}
}
@media(max-width:560px){
  .flash-wrap{width:min(100%,480px,calc((100dvh - 200px)*70/101));max-height:calc(100dvh - 200px)}
}

.flash-card.swiping{will-change:transform;transition:none!important}.login-status{font-weight:900}

/* Alpha 0.4.3.2 gesture hotfix */
.flash-card{touch-action:pan-y}
@media (pointer:coarse){.flash-card.answer-side .flip-edge{pointer-events:auto}}

/* Alpha 0.4.4.2 */
.dev-version{margin-top:10px;font-weight:950;color:#fff;letter-spacing:.02em}.dev-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:10px}.dev-actions .dev-button{margin-top:0}.legend-gap{height:10px}.state-legend{grid-template-columns:1fr}.knowledge-donut{background:conic-gradient(var(--review10) 0 var(--p10),var(--review20) var(--p10) var(--p20),var(--review40) var(--p20) var(--p40),var(--mastered) var(--p40) var(--pdone),#173047 var(--pdone) 100%)}.knowledge-key{display:grid;grid-template-columns:repeat(2,1fr);gap:3px;margin-top:6px;font-size:8px;color:var(--muted)}.knowledge-key span:before{content:"";display:inline-block;width:7px;height:7px;border-radius:2px;margin-right:4px;vertical-align:0}.knowledge-key .k10:before{background:var(--review10)}.knowledge-key .k20:before{background:var(--review20)}.knowledge-key .k40:before{background:var(--review40)}.knowledge-key .kdone:before{background:var(--mastered)}
/* Advertising uses exactly the same geometry as a learning card. */
.ad-card{width:min(100%,640px,calc((100dvh - 150px)*70/101));aspect-ratio:70/101;max-height:calc(100dvh - 150px)}
@media(max-width:760px){.state-legend{display:flex;flex-wrap:wrap;justify-content:center;gap:5px 10px;margin-top:7px}.legend-row{display:flex;gap:5px;font-size:9px}.legend-gap{flex-basis:100%;height:2px}.ad-card{width:min(100%,520px,calc((100dvh - 205px)*70/101));max-height:calc(100dvh - 205px)}.dev-actions{grid-template-columns:1fr}}
@media(max-width:560px){.ad-card{width:min(100%,480px,calc((100dvh - 200px)*70/101));max-height:calc(100dvh - 200px)}}

/* Exam integration v0.4.5 */
.exam-open-btn{margin-left:8px;border:1px solid rgba(255,255,255,.72);background:linear-gradient(180deg,#d0ae4b,#8b6f22);color:#102b3c;font-weight:800}
.exam-overlay{position:fixed;inset:0;z-index:5000;background:#020c14;display:none}
.exam-overlay.show{display:block}
.exam-frame{width:100%;height:100%;border:0;display:block;background:#020c14}
.exam-close{position:absolute;z-index:5002;right:max(10px,env(safe-area-inset-right));top:max(10px,env(safe-area-inset-top));width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.65);background:rgba(2,16,27,.78);color:white;font-size:29px;line-height:1;cursor:pointer;box-shadow:0 5px 14px rgba(0,0,0,.4)}
body.exam-active{overflow:hidden}

.topbar-actions{display:flex;align-items:center;gap:8px}.language-btn{border:1px solid rgba(255,255,255,.45);border-radius:16px;background:rgba(4,45,67,.75);color:#fff;padding:6px 10px;font-weight:800;cursor:pointer;min-width:58px}
.language-overlay{position:fixed;inset:0;z-index:6500;display:none;align-items:center;justify-content:center;padding:24px;background:linear-gradient(180deg,rgba(4,72,105,.98),rgba(1,18,29,.99))}.language-overlay.show{display:flex}
.language-card{width:min(92vw,460px);padding:28px 24px;border-radius:28px;text-align:center;border:1px solid rgba(255,255,255,.45);background:linear-gradient(180deg,rgba(15,91,130,.97),rgba(3,35,54,.98));box-shadow:0 24px 60px rgba(0,0,0,.55)}
.language-logo{width:110px;max-height:100px;object-fit:contain}.language-card h2{font:32px Georgia,serif;color:#f2dda0;margin:16px 0 8px}.language-card p{margin:0 0 20px}.language-choices{display:grid;gap:12px}
.language-choice{border:1px solid rgba(255,255,255,.75);border-radius:20px;padding:14px 18px;background:linear-gradient(180deg,#176d9f,#0b476c);color:#fff;font-size:21px;font-weight:800;display:flex;align-items:center;justify-content:center;gap:12px;cursor:pointer}.language-choice .flag{font-size:28px}

.language-card{position:relative}.language-detected-flag{position:absolute;right:18px;top:16px;font-size:34px;line-height:1}.flash-card.swiping{transition:none!important;will-change:transform}.answer-cross.hidden{display:grid!important;visibility:hidden;pointer-events:none}

.answer-buttons.answer-cross{grid-template-columns:1fr 1fr 1fr!important;grid-template-areas:". up ." "left . right" ". down ."!important}

/* 0.4.8: demo action buttons are visually equal */
.pack-buy-row .buy-btn{width:100%;min-height:48px;display:flex;align-items:center;justify-content:center;text-align:center;}

/* 0.5.0 */
.pack-buy-row .buy-btn{width:100%;height:48px;min-height:48px;padding:0 16px;box-sizing:border-box;display:flex;align-items:center;justify-content:center;text-align:center;}
.login-hint{max-width:520px;margin:4px auto 12px;text-align:center;font-size:13px;color:var(--muted);line-height:1.35}.login-hint.hidden{display:none}
.flash-card.answer-side .flip-edge{width:17%;touch-action:manipulation;}


/* 0.6.0 — consolidated responsive learning UI. No stacked legacy grading overrides. */
:root{
  --grade-new:#708594;
  --grade-unknown:#e91d22;
  --grade-soso:#f48120;
  --grade-remembered:#2f3092;
  --grade-easy:#076a37;
  --grade-locked:#354654;
}
html.learning-active,body.learning-active{overscroll-behavior-y:none}
body:not(.home-active) #languageBtn{display:none!important}
body.home-active>.app>.topbar{display:flex;position:absolute;right:12px;top:10px;z-index:120;margin:0;background:transparent}
body.home-active>.app>.topbar .brand,body.home-active #homeBtn{display:none!important}
body.home-active>.app>.topbar .topbar-actions{margin-left:auto}
.language-btn{font-size:22px;min-width:46px;height:40px;padding:4px 8px;line-height:1}

/* Knowledge colour semantics now match the four grading arrows. */
.state-dot{background:var(--grade-new)}
.state-dot.unlearned{background:var(--grade-new)}
.state-dot.grade-unknown{background:var(--grade-unknown)}
.state-dot.grade-soso{background:var(--grade-soso)}
.state-dot.grade-remembered{background:var(--grade-remembered)}
.state-dot.grade-easy{background:var(--grade-easy)}
.state-dot.locked{background:var(--grade-locked);opacity:.55}
.memory-road-five{grid-template-columns:repeat(5,1fr)}
.road-step.unlearned .road-fill{background:var(--grade-new)}
.road-step.grade-unknown .road-fill{background:var(--grade-unknown)}
.road-step.grade-soso .road-fill{background:var(--grade-soso)}
.road-step.grade-remembered .road-fill{background:var(--grade-remembered)}
.road-step.grade-easy .road-fill{background:var(--grade-easy)}

/* The card map and statistics belong below the initial learning viewport. */
.learn-details{width:min(100%,980px);margin:18px auto 0;padding:14px 4px 28px;display:grid;gap:16px}
.learn-details #statePanel,.learn-details #liveStats{width:100%}
.learn-workspace{min-height:calc(100dvh - 70px)}

/* Desktop keeps the established three-column composition, but gives the grading cross enough real width. */
@media(min-width:901px){
  .learn-workspace{grid-template-columns:minmax(150px,190px) minmax(430px,640px) minmax(270px,330px);gap:18px}
  .answer-zone{display:grid;place-items:center;min-height:190px}
}

/* One symmetric grading component. Text has its own cells and can never move an arrow. */
.answer-buttons.answer-cross{
  width:min(100%,320px)!important;
  height:166px!important;
  margin:0 auto!important;
  display:grid!important;
  grid-template-columns:34px minmax(78px,1fr) 18px minmax(78px,1fr) 34px!important;
  grid-template-rows:20px 34px 58px 34px 20px!important;
  gap:0!important;
  position:relative!important;
  align-items:stretch!important;
  justify-items:stretch!important;
}
.answer-buttons.answer-cross.hidden{visibility:hidden!important;pointer-events:none!important;display:grid!important}
.answer-cross .grade-btn{
  position:relative!important;margin:0!important;padding:0!important;border:0!important;border-radius:0!important;
  background:transparent!important;color:#fff!important;overflow:visible!important;filter:none!important;
  min-width:0!important;min-height:0!important;display:grid!important;align-items:center!important;touch-action:manipulation;
}
.answer-cross .grade-btn img{position:static!important;display:block!important;object-fit:contain!important;pointer-events:none!important;margin:0!important;justify-self:center!important}
.answer-cross .grade-btn span{position:static!important;transform:none!important;margin:0!important;width:auto!important;color:#fff!important;text-shadow:none!important;font-weight:900!important;text-transform:uppercase!important;line-height:1.05!important;font-size:clamp(10px,1.15vw,14px)!important;white-space:normal!important;pointer-events:none!important}
.answer-cross .grade-up{grid-column:2/5!important;grid-row:1/3!important;grid-template-rows:20px 34px!important;grid-template-columns:1fr!important}
.answer-cross .grade-up span{grid-row:1;text-align:center!important;align-self:start!important}
.answer-cross .grade-up img{grid-row:2;width:68px!important;height:34px!important}
.answer-cross .grade-left{grid-column:1/3!important;grid-row:3!important;grid-template-columns:34px minmax(0,1fr)!important}
.answer-cross .grade-left img{grid-column:1;width:29px!important;height:58px!important}
.answer-cross .grade-left span{grid-column:2;text-align:left!important;padding-left:7px!important;align-self:center!important}
.answer-cross .grade-right{grid-column:4/6!important;grid-row:3!important;grid-template-columns:minmax(0,1fr) 34px!important}
.answer-cross .grade-right span{grid-column:1;text-align:right!important;padding-right:7px!important;align-self:center!important}
.answer-cross .grade-right img{grid-column:2;width:29px!important;height:58px!important}
.answer-cross .grade-down{grid-column:2/5!important;grid-row:4/6!important;grid-template-rows:34px 20px!important;grid-template-columns:1fr!important}
.answer-cross .grade-down img{grid-row:1;width:68px!important;height:34px!important}
.answer-cross .grade-down span{grid-row:2;text-align:center!important;align-self:end!important}
.answer-cross .grade-btn:active{transform:scale(.97)}

/* Pointer Events own answer-side dragging; question side still permits ordinary vertical page movement. */
.flash-wrap{touch-action:pan-y}
.flash-wrap.gesture-enabled{touch-action:none;overscroll-behavior:contain}
.flash-card.swiping{transition:none!important;will-change:transform;cursor:grabbing}

/* Browse ordering control is deliberately small and does not alter the rest of the browse layout. */
.browse-nav{grid-template-columns:1fr auto 1fr}
.browse-sort-wrap{grid-column:1/-1;display:flex;justify-content:center}
.browse-sort{max-width:260px;width:100%;border:1px solid var(--line);background:#0a1e2f;color:var(--text);border-radius:10px;padding:8px 10px;font-weight:750}

/* Advertisement keeps card geometry; close is independent of media load success. */
.ad-stage{position:relative;width:min(100%,640px,calc((100dvh - 150px)*70/101));aspect-ratio:70/101;max-height:calc(100dvh - 150px);margin:auto}
.ad-stage .ad-card{display:block;width:100%!important;height:100%;max-height:none!important;position:relative;border-radius:17px;overflow:hidden;background:#fff;box-shadow:0 25px 64px rgba(0,0,0,.48);border:0}
.ad-stage .ad-card img{display:block;width:100%;height:100%;object-fit:cover}
.ad-close{position:absolute;z-index:8;right:8px;top:8px;width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.8);background:rgba(3,24,37,.84);color:#fff;font-size:27px;line-height:1;padding:0}
.ad-buy{position:absolute;z-index:8;left:50%;bottom:12px;transform:translateX(-50%);width:auto;min-width:150px;box-shadow:0 6px 18px rgba(0,0,0,.28)}

/* Mobile: first viewport is intentionally only rank + card + grading controls. Details begin below it. */
@media(max-width:900px){
  .app{padding:6px 7px max(8px,env(safe-area-inset-bottom))}
  .learn-header{padding:5px 0 7px!important}
  .learn-workspace{display:flex!important;flex-direction:column!important;align-items:stretch!important;gap:clamp(2px,.7dvh,6px)!important;min-height:calc(100dvh - 62px)!important}
  .learn-rail.left{display:none!important}
  .card-stage{order:1!important;width:100%!important}
  .learn-rail.right{order:2!important;width:100%!important;display:flex!important;flex-direction:column!important;justify-content:flex-start!important;gap:2px!important}
  .learn-rail.right .rail-nav{display:none!important}
  .answer-zone{order:1!important;height:clamp(150px,21dvh,174px)!important;min-height:0!important;padding:0!important;display:grid!important;place-items:center!important}
  .browse-nav{order:2!important}
  #cardAudioWrap{order:3!important}#adContinueWrap{order:4!important}#demoPurchase{order:5!important}
  .flash-wrap{width:min(94vw,520px,calc((100dvh - 62px - clamp(150px,21dvh,174px) - 10px)*70/101))!important;max-height:calc(100dvh - 222px)!important}
  .answer-buttons.answer-cross{width:min(94vw,360px)!important}
  .answer-cross .grade-btn span{font-size:clamp(10px,3vw,13px)!important}
  .learn-details{margin-top:12px;padding-top:12px}
  .state-map{justify-content:center;gap:6px}.state-dot{width:14px;height:14px}.state-legend{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 11px}.legend-row{display:flex;gap:5px;font-size:9px}
  .ad-stage{width:min(94vw,520px,calc((100dvh - 62px - clamp(150px,21dvh,174px) - 10px)*70/101));max-height:calc(100dvh - 222px)}
}
@media(max-width:560px){
  .answer-buttons.answer-cross{width:min(96vw,340px)!important;height:158px!important;grid-template-columns:32px minmax(72px,1fr) 14px minmax(72px,1fr) 32px!important;grid-template-rows:19px 32px 56px 32px 19px!important}
  .answer-cross .grade-up{grid-template-rows:19px 32px!important}.answer-cross .grade-down{grid-template-rows:32px 19px!important}
  .answer-cross .grade-up img,.answer-cross .grade-down img{width:64px!important;height:32px!important}
  .answer-cross .grade-left,.answer-cross .grade-right{grid-template-columns:32px minmax(0,1fr)!important}
  .answer-cross .grade-right{grid-template-columns:minmax(0,1fr) 32px!important}
  .answer-cross .grade-left img,.answer-cross .grade-right img{width:28px!important;height:56px!important}
  .answer-zone{height:clamp(144px,21dvh,166px)!important}
  .flash-wrap{width:min(94vw,480px,calc((100dvh - 62px - clamp(144px,21dvh,166px) - 8px)*70/101))!important;max-height:calc(100dvh - 214px)!important}
}
\n\n/* 0.6.1 — home actions share one geometry; no per-button offsets. */
.pack-buy-row{width:100%;align-self:stretch;justify-items:stretch;padding-left:12px;padding-right:12px}
.pack-buy-row .buy-btn{width:100%!important;max-width:none!important;margin:0!important;transform:none!important;align-self:stretch!important;justify-self:stretch!important;box-sizing:border-box!important}
@media(max-width:560px){.pack-buy-row{padding-left:8px;padding-right:8px}}

/* 0.6.1 — on phones labels sit on their arrows, reducing the grading block height. */
@media(max-width:560px){
  .answer-zone{height:clamp(126px,18dvh,146px)!important}
  .flash-wrap{width:min(94vw,480px,calc((100dvh - 62px - clamp(126px,18dvh,146px) - 8px)*70/101))!important;max-height:calc(100dvh - 196px)!important}
  .answer-buttons.answer-cross{width:min(94vw,300px)!important;height:132px!important;grid-template-columns:48px minmax(60px,1fr) 12px minmax(60px,1fr) 48px!important;grid-template-rows:38px 56px 38px!important}
  .answer-cross .grade-btn span{position:absolute!important;z-index:3!important;color:#fff!important;text-shadow:0 1px 2px rgba(0,0,0,.75)!important;font-size:8px!important;line-height:1!important;padding:0!important;text-align:center!important;width:auto!important;white-space:normal!important}
  .answer-cross .grade-up{grid-column:2/5!important;grid-row:1!important;display:block!important}.answer-cross .grade-up img{width:78px!important;height:39px!important}.answer-cross .grade-up span{left:50%!important;bottom:3px!important;transform:translateX(-50%)!important;width:58px!important}
  .answer-cross .grade-left{grid-column:1/3!important;grid-row:2!important;display:block!important}.answer-cross .grade-left img{position:absolute!important;left:0!important;top:50%!important;transform:translateY(-50%)!important;width:44px!important;height:88px!important}.answer-cross .grade-left span{left:4px!important;top:50%!important;transform:translateY(-50%)!important;width:30px!important}
  .answer-cross .grade-right{grid-column:4/6!important;grid-row:2!important;display:block!important}.answer-cross .grade-right img{position:absolute!important;right:0!important;top:50%!important;transform:translateY(-50%)!important;width:44px!important;height:88px!important}.answer-cross .grade-right span{right:3px!important;top:50%!important;transform:translateY(-50%)!important;width:34px!important}
  .answer-cross .grade-down{grid-column:2/5!important;grid-row:3!important;display:block!important}.answer-cross .grade-down img{width:78px!important;height:39px!important}.answer-cross .grade-down span{left:50%!important;top:3px!important;transform:translateX(-50%)!important;width:58px!important}
}

/* 0.6.2 — one language-specific four-way SVG; four transparent hit areas map to grading. */
.answer-buttons.answer-wheel{position:relative!important;width:min(100%,360px)!important;height:auto!important;aspect-ratio:609.1/251.3;margin:0 auto!important;display:block!important;overflow:visible!important}
.answer-buttons.answer-wheel.hidden{visibility:hidden!important;pointer-events:none!important;display:block!important}
.answer-wheel-image{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:contain;pointer-events:none;user-select:none}
.grade-hotspot{position:absolute;border:0;background:transparent;padding:0;margin:0;z-index:2;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.grade-hotspot-up{left:24%;top:0;width:52%;height:48%;clip-path:polygon(50% 0,100% 46%,72% 100%,28% 100%,0 46%)}
.grade-hotspot-down{left:24%;bottom:0;width:52%;height:48%;clip-path:polygon(28% 0,72% 0,100% 54%,50% 100%,0 54%)}
.grade-hotspot-left{left:0;top:22%;width:46%;height:56%;clip-path:polygon(0 50%,38% 0,100% 38%,100% 62%,38% 100%)}
.grade-hotspot-right{right:0;top:22%;width:46%;height:56%;clip-path:polygon(0 38%,62% 0,100% 50%,62% 100%,0 62%)}
.grade-hotspot:focus-visible{outline:2px solid #fff;outline-offset:2px}
.answer-buttons-setting{display:flex;align-items:center;gap:8px;justify-content:center;margin:10px auto 0;font-size:12px;color:var(--muted);cursor:pointer;user-select:none}
.answer-buttons-setting input{width:17px;height:17px;margin:0}
/* Swipe stamp stays on the card, but on the edge opposite the throw direction. */
.up-stamp{top:auto!important;bottom:8%!important;left:50%!important;right:auto!important;transform:translateX(-50%)!important}
.down-stamp{bottom:auto!important;top:8%!important;left:50%!important;right:auto!important;transform:translateX(-50%)!important}
.right-stamp{right:auto!important;left:5%!important;top:45%!important}
.left-stamp{left:auto!important;right:5%!important;top:45%!important}
@media(max-width:900px){
  .learn-rail.right .answer-zone{height:0!important;min-height:0!important;padding:0!important;margin:0!important;position:static!important}
  .answer-zone .tap-hint{position:fixed;left:50%;transform:translateX(-50%);bottom:max(8px,env(safe-area-inset-bottom));z-index:20;width:min(92vw,520px)}
  .answer-buttons.answer-wheel{position:fixed!important;left:50%!important;top:var(--float-top,auto)!important;bottom:auto!important;transform:translateX(-50%)!important;width:var(--float-width,min(88vw,360px))!important;z-index:40!important;filter:drop-shadow(0 4px 10px rgba(0,0,0,.22))}
  .answer-buttons.answer-wheel.hidden{visibility:hidden!important}
  .flash-wrap{width:min(94vw,520px)!important;max-height:calc(100dvh - 86px)!important}
}


/* 0.6.3 — answer wheel visibility is controlled only by the saved checkbox.
   On the question side it remains visible as a swipe guide, but grading hotspots are disabled until the answer is shown. */
.answer-buttons.answer-wheel.grading-disabled .grade-hotspot{pointer-events:none;cursor:default}

/* 0.6.4 desktop: the answer prism is an overlay centred in the free column to the right of the card.
   Its size/position are calculated from the actual card/workspace geometry, not from a narrow rail width. */
@media(min-width:901px){
  .learn-rail.right .answer-zone{width:100%;height:0!important;min-height:0!important;padding:0!important;margin:0!important;position:static!important}
  .answer-buttons.answer-wheel{position:fixed!important;left:var(--desktop-left,75vw)!important;top:var(--desktop-top,48vh)!important;transform:translateX(-50%)!important;width:var(--desktop-width,min(46vw,610px))!important;max-width:610px!important;margin:0!important;z-index:40!important;filter:drop-shadow(0 6px 14px rgba(0,0,0,.22))}
}


/* 0.6.5 — regression fixes. */
.card-image-loading{visibility:hidden!important}
.swipe-stamp{color:#fff!important;border:2px solid rgba(255,255,255,.95)!important;box-shadow:0 3px 12px rgba(0,0,0,.38);text-shadow:0 1px 2px rgba(0,0,0,.45)}
.up-stamp{background:#139447!important}
.right-stamp{background:#35359a!important}
.down-stamp{background:#f58219!important}
.left-stamp{background:#f51d22!important}

/* The prism is answer-side only. Hidden really means non-interactive. */
.answer-buttons.answer-wheel.hidden{visibility:hidden!important;pointer-events:none!important}
.answer-buttons.answer-wheel:not(.hidden){pointer-events:auto!important}
.answer-buttons.answer-wheel:not(.hidden) .grade-hotspot:not(:disabled){pointer-events:auto!important}

@media(min-width:901px){
  /* Preserve the old vertical location of the normal right-rail controls even though the prism itself floats. */
  .learn-rail.right .answer-zone{width:100%!important;height:220px!important;min-height:220px!important;padding:0!important;margin:0!important;position:static!important;pointer-events:none}
  .learn-rail.right .rail-nav,.learn-rail.right #checkpointLabel,.learn-rail.right #browseNav,.learn-rail.right #cardAudioWrap,.learn-rail.right #adContinueWrap,.learn-rail.right #demoPurchase{pointer-events:auto}
  .answer-buttons.answer-wheel{position:fixed!important;left:var(--desktop-left,72vw)!important;top:var(--desktop-top,46vh)!important;transform:translateX(-50%)!important;width:var(--desktop-width,min(52vw,650px))!important;max-width:650px!important;margin:0!important;z-index:80!important;pointer-events:auto!important;filter:drop-shadow(0 7px 16px rgba(0,0,0,.28))}
}
@media(max-width:900px){
  .answer-buttons.answer-wheel{z-index:80!important;pointer-events:auto!important}
}

/* Account bridge 0.6.9 */
.account-card{max-width:460px}.account-note{color:var(--muted);line-height:1.45}.account-field{display:block;text-align:left;margin:14px 0;font-weight:800}.account-field span{display:block;margin-bottom:6px}.account-field input{box-sizing:border-box;width:100%;padding:12px 14px;border:1px solid rgba(0,0,0,.18);border-radius:10px;font:inherit;background:#fff;color:#061521}.account-card form .primary,.account-card .secondary{width:100%;margin-top:8px}.account-error{margin:10px 0;padding:10px 12px;border-radius:8px;background:#ffe9e9;color:#8b1111;font-weight:700}.account-forgot{display:inline-block;margin-top:14px}.account-name{font-size:22px;font-weight:900;margin-top:12px}.account-email{color:var(--muted);margin-top:4px}.hidden{display:none!important}


/* 0.6.11 — keep the desktop answer prism out of the demo purchase area. */
.answer-buttons.answer-wheel.layout-hidden{visibility:hidden!important;pointer-events:none!important}

/* 0.6.12 account sync */
.account-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:12px}
.account-actions button{min-width:150px}

/* 0.6.13 encrypted offline packs */
.offline-section{margin:18px 0 8px;padding-top:16px;border-top:1px solid rgba(0,0,0,.12)}
.account-subtitle{font-weight:800;font-size:1rem;margin-bottom:5px}
.offline-packs{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.offline-pack-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 12px;align-items:center;padding:10px 0;border-top:1px solid rgba(0,0,0,.08)}
.offline-pack-row:first-child{border-top:0}
.offline-pack-title{font-weight:700;min-width:0}
.offline-pack-status{font-size:.84rem;opacity:.72;grid-column:1/2}
.offline-pack-actions{grid-row:1/3;grid-column:2;display:flex;flex-direction:column;gap:4px;align-items:flex-end}
.offline-pack-actions button{white-space:nowrap}
@media(max-width:560px){.offline-pack-row{grid-template-columns:1fr}.offline-pack-actions{grid-row:auto;grid-column:auto;align-items:stretch}.offline-pack-actions button{width:100%}}

/* 0.6.15 — clean home, unified Settings, first-run onboarding. */
.settings-btn{border:1px solid rgba(255,255,255,.42);border-radius:50%;width:42px;height:42px;background:rgba(4,45,67,.78);color:#fff;font-size:24px;line-height:1;display:grid;place-items:center;cursor:pointer;padding:0}
.settings-card{text-align:left;max-width:560px}.settings-title-row{text-align:center;margin-bottom:4px}.settings-section{padding:16px 0;border-top:1px solid rgba(255,255,255,.12)}.settings-section:first-of-type{border-top:0}.settings-section .account-subtitle{font-size:17px;margin-bottom:10px}.settings-language-choices{display:flex;gap:8px;flex-wrap:wrap}.settings-language-choice{border:1px solid var(--line);border-radius:14px;background:#102b42;color:var(--text);padding:9px 12px;font-weight:800;display:flex;align-items:center;gap:7px;cursor:pointer}.settings-language-choice.active{outline:2px solid #78c5ff;background:#173b58}.settings-choice-list{display:grid;gap:8px}.settings-radio{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:14px;padding:11px 12px;cursor:pointer;background:#102b42}.settings-radio input{accent-color:#4ea5e8}.settings-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.settings-actions button{margin:0}.settings-card .dev.settings-section{background:transparent;border-radius:0;padding-left:0;padding-right:0;border-left:0;border-right:0;border-bottom:0}.settings-card .dev summary{cursor:pointer;font-weight:800}.settings-card .offline-section{margin-top:12px;padding-top:0;border-top:0}.settings-card .account-actions{justify-content:flex-start}.settings-card .account-actions button{min-width:0}.home-active .home-logo-wrap{margin-top:6px}
@media(max-width:560px){.settings-card{padding:20px 16px}.settings-actions{grid-template-columns:1fr}.settings-btn{width:40px;height:40px;font-size:22px}}

/* 0.6.19 / Native 0.1.2 — Android viewport and navigation-safe layout. */
@media(max-width:900px){
  html.native-app body{min-height:100dvh;padding-bottom:0}
  html.native-app .app{padding-top:max(4px,env(safe-area-inset-top));padding-bottom:max(20px,env(safe-area-inset-bottom))}
  html.native-app .learn-header{padding-top:max(4px,env(safe-area-inset-top))!important;padding-bottom:4px!important}
  html.native-app .learn-workspace{justify-content:flex-start!important;min-height:0!important;gap:clamp(2px,.6dvh,6px)!important}
  html.native-app .card-stage{justify-content:center!important;align-items:center!important;margin-top:clamp(4px,1dvh,10px)!important}
  html.native-app .flash-wrap{width:min(94vw,var(--native-card-width,520px))!important;max-height:none!important}
  html.native-app .answer-buttons.answer-wheel{max-width:88vw!important}
  html.native-app .answer-zone .tap-hint{bottom:max(22px,calc(env(safe-area-inset-bottom) + 8px))!important}
}
@media(max-width:560px){
  html.native-app .flash-wrap{width:min(94vw,var(--native-card-width,480px))!important}
}

/* Explicit demo action: keep trial and purchase equally discoverable. */
.pack-buy-row .demo-open{background:#163754;color:#fff}
.dev-version{display:grid;gap:3px;line-height:1.35}

@media(max-width:900px){html.native-app body.home-active>.app>.topbar{top:max(38px,calc(env(safe-area-inset-top) + 10px))!important;right:calc(env(safe-area-inset-right) + 12px)!important}html.native-app .ad-stage{width:min(94vw,var(--native-card-width,520px))!important;max-height:none!important}}

/* 0.6.23: exam iframe itself is constrained to the native safe rectangle. */
html.native-app .exam-overlay{top:env(safe-area-inset-top);bottom:env(safe-area-inset-bottom);left:0;right:0;height:auto;}
html.native-app .exam-overlay iframe{width:100%;height:100%;display:block;border:0;}
/* 0.6.23: messages must not be clipped by pill-shaped corners on narrow phones. */
.toast{max-width:min(92vw,560px);white-space:normal;text-align:center;line-height:1.25;border-radius:10px;padding:11px 14px;}

/* 0.6.30 local-storage quota warning */
.storage-warning-overlay{z-index:7200}
.storage-warning-card{width:min(100%,560px)}
.storage-warning-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}
@media(max-width:520px){.storage-warning-actions{grid-template-columns:1fr}}

/* Social login */
.social-login-divider{display:flex;align-items:center;gap:10px;margin:14px 0;color:var(--muted,#8393a7);font-size:.85rem}.social-login-divider::before,.social-login-divider::after{content:"";height:1px;background:rgba(255,255,255,.14);flex:1}.social-login-button{width:100%;display:flex;align-items:center;justify-content:center;gap:10px}.google-mark{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#fff;color:#1f1f1f;font-weight:700}.social-login-button[disabled]{opacity:.55;cursor:wait}

/* 0.6.42 rewards / collectible prototype */
.reward-hub-btn{border:1px solid rgba(255,255,255,.18);background:#0b263b;color:#f7d47b;width:42px;height:42px;border-radius:50%;padding:7px;display:grid;place-items:center;cursor:pointer;box-shadow:0 5px 18px rgba(0,0,0,.24)}
.reward-hub-btn svg{width:27px;height:27px;fill:#7e5521;stroke:#f5cf72;stroke-width:3;stroke-linejoin:round;stroke-linecap:round}.reward-hub-btn:hover{transform:translateY(-1px);filter:brightness(1.08)}
.rewards-card{width:min(96vw,820px);text-align:left}.rewards-card>.reward-title,.rewards-card>.reward-sub{text-align:center}.rewards-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:16px 0}.rewards-tab{border:1px solid var(--line);background:#102b42;color:var(--text);border-radius:12px;padding:10px 8px;font-weight:850;cursor:pointer}.rewards-tab.active{background:#e7f4ff;color:#082035}.rewards-panel{display:none}.rewards-panel.active{display:block}.rewards-pack-row{display:flex;align-items:center;justify-content:center;gap:10px;margin:10px 0 12px}.rewards-pack-row label{font-size:12px;color:var(--muted);font-weight:800}.rewards-pack-row select{background:#091c2c;color:var(--text);border:1px solid var(--line);border-radius:10px;padding:8px 10px;max-width:70%}.puzzle-rank-line{text-align:center;font-weight:900;margin-bottom:10px}.reward-puzzle{--painting-image:linear-gradient(135deg,#315c78,#0c2537);position:relative;margin:0 auto;width:min(100%,680px);aspect-ratio:1.514/1;border-radius:16px;overflow:hidden;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);background:#071624;box-shadow:0 16px 45px rgba(0,0,0,.34)}
.puzzle-piece{position:relative;perspective:800px;min-width:0;min-height:0}.puzzle-piece-inner{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .72s cubic-bezier(.2,.8,.2,1)}.puzzle-piece.revealed .puzzle-piece-inner{transform:rotateY(180deg)}.puzzle-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border:1px solid rgba(255,255,255,.22)}.puzzle-back{display:grid;place-items:center;background:radial-gradient(circle at 40% 28%,#214d6d,#071b2b 70%);font-size:clamp(28px,7vw,54px);color:#e9c46d;text-shadow:0 2px 12px #000}.puzzle-front{transform:rotateY(180deg);background-image:var(--painting-image);background-size:300% 300%;background-repeat:no-repeat}.reward-puzzle.complete .puzzle-face{border-color:transparent}.reward-puzzle.complete{box-shadow:0 18px 55px rgba(0,0,0,.42)}.painting-caption{text-align:center;margin:14px auto 2px;animation:rewardCaptionIn .7s ease both}.painting-caption strong,.painting-caption span{display:block}.painting-caption strong{font-family:Georgia,serif;font-size:20px}.painting-caption span{margin-top:4px;color:var(--muted);font-size:14px}.rewards-actions{display:flex;justify-content:center;margin-top:14px}.rewards-actions .primary{min-width:180px}.rewards-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px}.gallery-item{border:1px solid var(--line);background:#091c2c;border-radius:14px;overflow:hidden}.gallery-item img{display:block;width:100%;aspect-ratio:1.514/1;object-fit:cover}.gallery-item .gallery-copy{padding:9px}.gallery-item strong,.gallery-item span{display:block}.gallery-item span{font-size:11px;color:var(--muted);margin-top:3px}.gallery-item.locked{opacity:.55}.gallery-placeholder{aspect-ratio:1.514/1;display:grid;place-items:center;background:#102b42;font-size:34px}.leaderboard-preview{text-align:center;padding:18px 8px}.leaderboard-heading{font-size:20px;font-weight:900}.leaderboard-cats{display:flex;flex-wrap:wrap;gap:7px;justify-content:center;margin:14px 0}.leaderboard-cats span{padding:7px 10px;border-radius:999px;background:#102b42;border:1px solid var(--line);font-size:12px;font-weight:800}@keyframes rewardCaptionIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media(max-width:560px){.rewards-card{padding:18px 12px}.rewards-tabs{gap:4px}.rewards-tab{font-size:11px;padding:9px 4px}.reward-puzzle{border-radius:12px}.puzzle-back{font-size:32px}.rewards-pack-row{flex-direction:column;gap:5px}.rewards-pack-row select{max-width:100%;width:100%}}

/* 0.6.43 reward career + canonical private artwork */
.career-pack-buttons{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px;margin:12px 0 14px}
.career-pack-btn{border:1px solid var(--line);background:#091c2c;color:var(--text);border-radius:12px;padding:9px 10px;cursor:pointer;text-align:left;transition:transform .15s ease,border-color .15s ease,background .15s ease}
.career-pack-btn:hover{transform:translateY(-1px)}
.career-pack-btn.selected{border-color:#8fc9ff;background:#0d2941;box-shadow:0 0 0 1px rgba(143,201,255,.18) inset}
.career-pack-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:7px}.career-pack-head strong{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.career-pack-head small{font-size:9px;color:var(--muted);white-space:nowrap}
.career-steps{display:grid;grid-template-columns:repeat(9,1fr);gap:2px;height:9px}.career-step{position:relative;display:block;border-radius:3px;background:#20394d;overflow:visible}.career-step.done{background:#2e87c9}.career-step:nth-child(2).done{background:#347fbd}.career-step:nth-child(3).done{background:#3978b1}.career-step:nth-child(4).done{background:#3e70a6}.career-step:nth-child(5).done{background:#42699b}.career-step:nth-child(6).done{background:#46628f}.career-step:nth-child(7).done{background:#4a5b84}.career-step:nth-child(8).done{background:#4e5479}.career-step.admiral-done{background:transparent}
.admiral-cap{position:absolute;width:23px;height:17px;left:50%;top:50%;transform:translate(-50%,-50%);fill:#e6c66e;stroke:#6e5116;stroke-width:1.3;overflow:visible;filter:drop-shadow(0 1px 2px rgba(0,0,0,.55))}
.reward-puzzle{aspect-ratio:4/3;transition:aspect-ratio .2s ease}.puzzle-face{transition:border-color .72s ease .18s}.reward-puzzle.complete .puzzle-face{border-color:transparent}.painting-caption{margin:10px auto 0;animation:rewardCaptionIn .75s ease .28s both}.painting-caption strong{font-family:Georgia,serif;font-size:14px;font-weight:500;letter-spacing:.01em}.painting-caption span{margin-top:3px;color:var(--muted);font-family:Georgia,serif;font-size:11px;font-style:italic}.gallery-item img{width:100%;height:auto;aspect-ratio:auto;object-fit:contain;background:#06131e}.gallery-item .gallery-copy strong{font-family:Georgia,serif;font-weight:500}.gallery-item .gallery-copy span{font-family:Georgia,serif;font-style:italic}
@media(max-width:560px){.career-pack-buttons{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.career-pack-btn{padding:8px}.career-pack-head strong{font-size:11px}.career-pack-head small{font-size:8px}}

/* 0.6.44 — desktop proportion preview: full-page ranks, compact branding, custom nautical icons. */
.reward-hub-btn img,.settings-btn img{width:28px;height:28px;display:block;object-fit:contain;pointer-events:none}
.reward-hub-btn svg{display:none!important}
.settings-btn{font-size:0}
.home-logo{width:min(120px,26vw)}

@media(min-width:901px){
  /* Rank overview behaves as a page, not a floating modal. */
  #rankOverviewOverlay.overlay{position:fixed;inset:0;z-index:1000;padding:0;background:#071722;overflow:hidden;align-items:stretch;justify-content:stretch}
  #rankOverviewOverlay.show{display:flex}
  #rankOverviewOverlay>.overlay-card{width:100%;height:100dvh;max-width:none;max-height:none;margin:0;border:0;border-radius:0;box-shadow:none;background:#071722;padding:28px 42px 24px;display:grid;grid-template-columns:minmax(170px,220px) minmax(620px,840px) minmax(170px,220px);grid-template-rows:auto 1fr auto;column-gap:34px;align-items:start;text-align:left;overflow:hidden}
  #rankOverviewOverlay .overlay-close{position:absolute;top:22px;right:28px}
  #rankOverviewOverlay .reward-symbol{grid-column:1;grid-row:1/3;margin:4px auto 0;font-size:42px;align-self:start}
  #rankOverviewOverlay .reward-title{grid-column:2;grid-row:1;font-size:clamp(24px,2.2vw,34px);line-height:1.1;text-align:left;margin:0 0 2px}
  #rankOverviewPack{grid-column:2;grid-row:1;text-align:left!important;align-self:end;margin-top:42px;font-size:13px}
  #rankOverviewSteps{grid-column:2;grid-row:2;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-rows:repeat(3,minmax(0,1fr));gap:12px;align-self:center;height:min(64vh,610px);min-height:450px}
  #rankOverviewSteps .rank-step{margin:0;border-radius:18px;padding:14px 16px;display:grid;grid-template-columns:36px 1fr;grid-template-rows:auto auto;align-content:center;gap:6px 10px;font-size:15px;min-height:0;background:linear-gradient(145deg,rgba(17,50,74,.96),rgba(7,27,43,.96));border:1px solid rgba(167,202,226,.16);box-shadow:0 8px 26px rgba(0,0,0,.12)}
  #rankOverviewSteps .rank-step>span:first-child{grid-column:1;grid-row:1/3;font-size:22px;align-self:center;text-align:center}
  #rankOverviewSteps .rank-step>span:nth-child(2){grid-column:2;grid-row:1;font-weight:900;font-size:15px;align-self:end}
  #rankOverviewSteps .rank-step .need{grid-column:2;grid-row:2;font-size:11px;align-self:start}
  #rankOverviewSteps .rank-step.done{opacity:.72}
  #rankOverviewSteps .rank-step.current{opacity:1;border-color:#80c7f4;background:linear-gradient(145deg,rgba(24,76,111,.98),rgba(11,42,67,.98));box-shadow:0 0 0 1px rgba(128,199,244,.15) inset,0 10px 30px rgba(0,0,0,.18)}
  #rankOverviewClose{grid-column:2;grid-row:3;justify-self:center;width:min(260px,100%);margin:14px 0 0}

  /* Duolingo-like breathing room: center content dominant, side columns quiet. */
  #rankOverviewOverlay>.overlay-card:before{content:"";grid-column:1;grid-row:1/4;border-right:1px solid rgba(255,255,255,.09);height:100%;justify-self:end;margin-right:-17px}
  #rankOverviewOverlay>.overlay-card:after{content:"";grid-column:3;grid-row:1/4;border-left:1px solid rgba(255,255,255,.06);height:100%;justify-self:start;margin-left:-17px}
}

/* 0.6.45 — full-screen ranks, compact rewards and contextual help. */
.rank-overview-overlay{padding:0;background:#061521;align-items:stretch;justify-content:stretch}
.rank-overview-overlay.show{display:block}
.rank-overview-card{box-sizing:border-box;width:100vw!important;max-width:none!important;height:100dvh;max-height:none!important;border:0!important;border-radius:0!important;box-shadow:none!important;padding:clamp(22px,3.5vh,42px) clamp(28px,5vw,82px)!important;overflow:hidden!important;display:flex;flex-direction:column}
.rank-overview-head{text-align:center;flex:0 0 auto}.rank-overview-head .reward-title{margin-bottom:4px}.rank-overview-head .reward-sub{margin-bottom:8px}
.rank-overview-grid{width:min(100%,980px);margin:8px auto;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-rows:repeat(3,minmax(0,1fr));gap:clamp(8px,1.4vw,16px);flex:1 1 auto;min-height:0}
.rank-overview-item{min-height:0;border:1px solid #355b78;border-radius:16px;background:#0a2031;display:grid;grid-template-rows:minmax(0,1fr) auto auto;place-items:center;padding:8px;opacity:.54;transition:.2s ease}
.rank-overview-item img{display:block;max-width:min(88px,38%);max-height:64%;width:auto;height:auto;filter:saturate(.5)}
.rank-overview-item.done{opacity:.82}.rank-overview-item.current{opacity:1;border-color:#d6b756;background:#113550;box-shadow:0 0 0 2px rgba(214,183,86,.16) inset}.rank-overview-item.current img{filter:none}
.rank-overview-name{font-weight:900;font-size:clamp(14px,1.35vw,20px);line-height:1.1;margin-top:3px}.rank-overview-need{font-size:11px;color:var(--muted);margin-top:3px}
.rank-overview-card .rank-close{width:min(280px,42vw);margin:7px auto 0;flex:0 0 auto}
.rank-reveal-overlay{z-index:5100;background:rgba(2,12,20,.94)}
.rank-reveal-card{width:min(92vw,700px);max-height:94vh;overflow:hidden;padding:18px 20px 16px}
.rank-reveal-title{text-align:center;font:600 clamp(22px,3vw,34px) Georgia,serif;color:#f2dda0;margin:0 0 10px}
.rank-reveal-puzzle{width:min(100%,620px);max-height:68vh}
.rank-reveal-card .painting-caption{margin-top:8px}
.rewards-card{max-height:94vh}
.rewards-tabs{grid-template-columns:repeat(3,1fr)}
.rewards-tab-wrap{position:relative;display:grid;grid-template-columns:1fr 24px;gap:4px;align-items:center}
.rewards-tab-wrap .rewards-tab{width:100%;height:100%}
.rewards-help{position:relative;width:22px;height:22px;border-radius:50%;border:1px solid #547694;background:#0b263b;color:#cfe4f4;font-size:12px;font-weight:900;padding:0;cursor:help}
.rewards-help::after{content:attr(data-tip);position:absolute;right:0;top:calc(100% + 8px);width:220px;padding:8px 10px;border-radius:9px;background:#04121d;color:#eaf6ff;border:1px solid #456983;box-shadow:0 8px 24px #0008;font-size:11px;font-weight:500;line-height:1.35;text-align:left;opacity:0;visibility:hidden;transform:translateY(-3px);transition:.16s ease;z-index:30;pointer-events:none}
.rewards-help:hover::after,.rewards-help:focus::after,.rewards-help.show-tip::after{opacity:1;visibility:visible;transform:none}
.rewards-card .reward-title{font-size:clamp(22px,3vw,30px)}.rewards-card .reward-sub{margin-bottom:8px}.rewards-tabs{margin:10px 0}
.rewards-card .reward-puzzle{width:min(100%,560px);max-height:54vh}.rewards-actions{margin-top:8px}.rewards-actions .primary{padding:9px 14px}

/* 0.6.46 — real rank page + immediate rewards feedback */
.rank-overview-screen{min-height:calc(100dvh - 72px);padding:0!important}
.rank-overview-page{box-sizing:border-box;min-height:calc(100dvh - 72px);width:100%;padding:clamp(18px,2.8vh,30px) clamp(24px,4vw,64px);display:flex;flex-direction:column;background:#061521}
.rank-overview-page-head{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;flex:0 0 auto;margin-bottom:10px}
.rank-overview-page-head>div{text-align:center;grid-column:2}.rank-overview-page-head .reward-title{font-size:clamp(24px,2.2vw,34px);margin:0 0 3px}.rank-overview-page-head .reward-sub{margin:0;font-size:13px}
.rank-overview-back{grid-column:1;justify-self:start;align-self:start;white-space:nowrap}
.rank-overview-page .rank-overview-grid{width:min(100%,940px);margin:0 auto;flex:1 1 auto;min-height:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-rows:repeat(3,minmax(0,1fr));gap:clamp(8px,1.15vw,14px)}
.rank-overview-page .rank-overview-item{border-radius:14px;padding:7px;min-height:0}
.rank-overview-page .rank-overview-item img{max-width:min(74px,32%);max-height:58%}
.rank-overview-page .rank-overview-name{font-size:clamp(13px,1.15vw,18px)}
.rank-overview-page .rank-overview-need{font-size:10px}
.rank-overview-page .rank-close{width:min(260px,36vw);margin:10px auto 0;flex:0 0 auto}

.rewards-card{position:relative}
.rewards-loading{position:absolute;inset:0;z-index:50;border-radius:inherit;background:rgba(5,20,32,.72);display:grid;place-items:center;backdrop-filter:blur(1px)}
.rewards-spinner{width:34px;height:34px;border-radius:50%;border:3px solid rgba(255,255,255,.22);border-top-color:#d8edf9;animation:sdRewardSpin .72s linear infinite}
@keyframes sdRewardSpin{to{transform:rotate(360deg)}}

/* Rank reward reveal is a calm full-screen interstitial, not another popup card. */
.rank-reveal-overlay{padding:0!important;align-items:stretch!important;justify-content:stretch!important;background:#061521!important}
.rank-reveal-card{box-sizing:border-box;width:100vw!important;max-width:none!important;height:100dvh!important;max-height:none!important;border:0!important;border-radius:0!important;box-shadow:none!important;background:#061521!important;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:clamp(18px,3vh,36px)!important;overflow:hidden!important}
.rank-reveal-title{flex:0 0 auto;margin:0 0 12px}
.rank-reveal-puzzle{flex:0 1 auto;width:min(72vw,720px)!important;max-width:720px;max-height:68vh!important}
.rank-reveal-card .painting-caption{flex:0 0 auto;margin-top:9px}

/* 0.6.47 — Aardekirst is a real screen, not a popup. */
.rewards-screen{min-height:calc(100dvh - 72px);padding:0!important;background:#061521}
.rewards-page{position:relative;box-sizing:border-box;min-height:calc(100dvh - 72px);width:100%;padding:clamp(16px,2.4vh,28px) clamp(20px,4vw,64px) 24px;background:#061521;display:flex;flex-direction:column;overflow:hidden}
.rewards-page-head{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;flex:0 0 auto;margin-bottom:10px}
.rewards-page-head>.reward-title{grid-column:2;text-align:center;margin:0;font-size:clamp(24px,2.2vw,34px)}
.rewards-back{grid-column:1;white-space:nowrap}
.rewards-page .rewards-loading{position:absolute;top:8px;right:8px;inset:auto;z-index:10;width:44px;height:44px;border-radius:50%;background:rgba(5,20,32,.72);display:grid;place-items:center}
.rewards-page .rewards-loading.hidden{display:none}
.rewards-page .rewards-tabs{width:min(100%,900px);margin:0 auto 12px;flex:0 0 auto}
.rewards-page-body{width:min(100%,1100px);margin:0 auto;flex:1 1 auto;min-height:0;overflow:auto;padding:2px 4px 8px}
.rewards-page .rewards-panel{min-height:100%;box-sizing:border-box}
.rewards-page #rewardsCareerPanel.active{display:flex;flex-direction:column;align-items:center}
.rewards-page .career-pack-buttons{width:min(100%,980px)}
.rewards-page .reward-puzzle{width:min(56vw,640px);max-width:640px;max-height:52vh}
.rewards-page .rewards-actions{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:12px}
.share-social{min-width:112px}
.leaderboard-tables{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:12px}
.leaderboard-table{background:#0a2031;border:1px solid #355b78;border-radius:14px;padding:12px 14px}
.leaderboard-table h3{margin:0 0 10px;font-size:17px}
.leaderboard-list{display:grid;gap:6px}
.leaderboard-row{display:grid;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;gap:8px;padding:8px 9px;border-radius:9px;background:#0d2a40}
.leaderboard-row span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.leaderboard-row strong{font-size:12px;color:#d7ecfa;text-align:right}
.leaderboard-optin{margin-top:6px}
@media(max-width:760px){.rewards-page{padding:14px 12px 18px}.rewards-page .reward-puzzle{width:min(94vw,620px);max-height:48vh}.leaderboard-tables{grid-template-columns:1fr}.share-social{min-width:calc(50% - 6px)}}

/* 0.6.48 — calmer rank reveal + public nickname */
.rank-reveal-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:16px;flex:0 0 auto}
.rank-reveal-actions.hidden{display:none}
.rank-reveal-actions button{min-width:150px}
.account-nickname-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:8px 0 4px;font-size:13px}
.compact-button{padding:6px 10px;min-height:auto}
.nickname-card{width:min(92vw,460px)}
.nickname-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:14px}
.nickname-card .account-field{margin-top:14px}

/* 0.6.49 base — ceremonial Admiral completion, gallery provenance and separate leaderboard halls */
.rank-reveal-gallery-note{margin-top:8px;font-size:12px;color:#a9bfd0;text-align:center;font-style:italic;max-width:620px}
.rank-reveal-card .rank-reveal-actions{margin-top:12px}.rank-reveal-card .rank-reveal-actions .hidden{display:none!important}
.painting-caption{display:flex;flex-direction:column;gap:3px;text-align:center}.painting-caption strong{font-family:Georgia,serif;font-size:18px;color:#f2dda0}.painting-caption span{font-size:12px;color:#bed0dc}
.gallery-copy em{display:block;margin-top:8px;font:italic 12px/1.45 Georgia,serif;color:#d7c58e}
.leaderboard-categories{width:min(900px,100%);margin:20px auto;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.leaderboard-category{min-height:150px;border:1px solid #526f86;border-radius:18px;background:linear-gradient(145deg,#12344c,#081c2c);color:#eef8ff;display:grid;grid-template-columns:72px 1fr 24px;align-items:center;gap:18px;padding:20px 24px;text-align:left;box-shadow:0 14px 34px #0004;cursor:pointer}
.leaderboard-category:hover{border-color:#d6b756;transform:translateY(-1px)}.leaderboard-category strong{font:700 clamp(20px,2.2vw,30px) Georgia,serif;color:#f2dda0}
.leaderboard-medallion{width:58px;height:58px;border:2px solid #d6b756;border-radius:50%;display:grid;place-items:center;font-size:28px;color:#f2dda0;background:#071725;box-shadow:0 0 0 5px rgba(214,183,86,.08)}
.leaderboard-detail-head{width:min(760px,100%);margin:8px auto 18px;display:grid;grid-template-columns:auto 1fr auto;align-items:center}.leaderboard-detail-title{grid-column:2;display:flex;align-items:center;justify-content:center;gap:14px}.leaderboard-detail-title h2{margin:0;font:700 28px Georgia,serif;color:#f2dda0}
.leaderboard-table.ceremonial{width:min(760px,100%);margin:0 auto;background:linear-gradient(180deg,#0c2639,#081a29);border-color:#506b80;padding:16px 18px}.leaderboard-row{border:1px solid rgba(255,255,255,.05)}.leaderboard-row.podium{background:linear-gradient(90deg,rgba(214,183,86,.18),rgba(13,42,64,.96));border-color:rgba(214,183,86,.32)}
.exam-diploma-overlay,.exam-next-overlay{z-index:6200;padding:0!important;background:#061521!important;align-items:stretch!important;justify-content:stretch!important}.exam-diploma-page,.exam-next-page{box-sizing:border-box;width:100vw;min-height:100dvh;background:radial-gradient(circle at 50% 20%,#153d59 0,#071b2a 48%,#04111c 100%);display:flex;flex-direction:column;align-items:center;padding:clamp(18px,3vh,34px) 20px;color:#edf7fd;overflow:auto}
.exam-diploma-heading{font:700 clamp(24px,3.3vw,40px) Georgia,serif;color:#f2dda0;text-align:center}.exam-diploma-rank{font:800 clamp(30px,4vw,52px) Georgia,serif;text-transform:uppercase;margin-top:6px}.exam-diploma-pack{font-size:14px;color:#b9d0df;margin-bottom:12px}.exam-diploma-preview{flex:1 1 auto;min-height:0;display:grid;place-items:center}.exam-diploma-preview img{display:block;max-height:56vh;max-width:min(88vw,540px);filter:drop-shadow(0 18px 34px #0008)}.exam-diploma-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:14px}.exam-diploma-actions button{min-width:140px}
.exam-next-page{position:relative;padding-top:clamp(48px,7vh,78px)}.exam-next-page h2{font:700 clamp(24px,3vw,38px)/1.25 Georgia,serif;color:#f2dda0;text-align:center;max-width:840px;margin:0 0 20px}.exam-next-repeat{margin-bottom:24px}.exam-next-packs{width:min(1100px,100%);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.exam-next-pack{border:1px solid #395d75;border-radius:16px;background:#0b2638;padding:10px;display:grid;grid-template-rows:minmax(0,1fr) auto auto;gap:7px;cursor:pointer;text-align:center}.exam-next-pack:hover{border-color:#d6b756}.exam-next-pack img{width:100%;height:180px;object-fit:contain;border-radius:10px}.exam-next-pack strong{font-size:15px}.exam-next-pack span{font-size:11px;color:#b9cfdd}
@media(max-width:760px){.leaderboard-categories{grid-template-columns:1fr}.leaderboard-category{min-height:112px;grid-template-columns:58px 1fr 18px;padding:14px}.leaderboard-medallion{width:46px;height:46px;font-size:22px}.exam-next-packs{grid-template-columns:repeat(2,minmax(0,1fr))}.exam-next-pack img{height:150px}.exam-diploma-actions button{min-width:calc(50% - 8px)}}
.exam-diploma-share-title{margin-top:10px;font:600 15px Georgia,serif;color:#d9c783;letter-spacing:.02em}

/* 0.6.50 — stable exam finale, gallery diplomas and ceremonial leaderboard */
.gallery-item .gallery-copy em{display:block;margin-top:8px;font:italic 12px/1.45 Georgia,serif;color:#d9c783}
.gallery-diploma-btn{width:100%;margin-top:10px;padding:8px 10px;font-family:Georgia,serif;border-color:#806f3f!important;color:#f2dda0!important}
.gallery-diploma-btn:hover{border-color:#d6b756!important;background:#17364b!important}
.exam-diploma-page{position:relative}
.exam-diploma-close{position:fixed;top:max(14px,env(safe-area-inset-top));right:18px;z-index:3}
.exam-review-topics{width:min(720px,100%);display:grid;gap:8px;margin:0 auto 20px}
.exam-review-heading{font:600 17px Georgia,serif;color:#d9c783;text-align:center;margin-bottom:2px}
.exam-review-topic{padding:10px 14px;border:1px solid #3c6078;border-radius:10px;background:#0b2638;text-align:center;font-size:14px;line-height:1.35}
.exam-review-topics.hidden{display:none!important}
/* The leaderboard chooser should feel like the exam rank ladder, not a dashboard. */
.leaderboard-categories{width:min(720px,100%)!important;grid-template-columns:1fr!important;gap:10px!important;margin:20px auto!important}
.leaderboard-category{min-height:92px!important;grid-template-columns:64px 1fr 24px!important;padding:14px 20px!important;border-color:#6f704d!important;background:linear-gradient(180deg,#102d42 0%,#081d2d 100%)!important;box-shadow:0 8px 22px #0005,inset 0 0 0 1px rgba(242,221,160,.04)!important}
.leaderboard-category strong{text-align:center!important;letter-spacing:.02em}
.leaderboard-category>span:last-child{font-size:24px;color:#d9c783}
.leaderboard-table.ceremonial{border-color:#6f704d!important;box-shadow:0 14px 34px #0005,inset 0 0 0 1px rgba(242,221,160,.03)}
.leaderboard-row.podium-1{border-color:rgba(242,221,160,.62)!important}
@media(max-width:560px){.leaderboard-category{min-height:82px!important;grid-template-columns:52px 1fr 18px!important;padding:12px 14px!important}.leaderboard-category strong{font-size:20px!important}.gallery-diploma-btn{padding:9px 10px}}


/* 0.6.51 — side-by-side ceremonial leaderboard. */
.leaderboard-board{width:min(1120px,100%);margin:18px auto 0;display:grid;grid-template-columns:minmax(260px,340px) minmax(0,1fr);gap:22px;align-items:start}
.leaderboard-board .leaderboard-categories{width:100%!important;margin:0!important;display:grid!important;grid-template-columns:1fr!important;gap:10px!important}
.leaderboard-board .leaderboard-category{width:100%;min-height:88px!important;grid-template-columns:58px 1fr!important;padding:13px 18px!important}
.leaderboard-board .leaderboard-category.active{background:linear-gradient(180deg,#27884f 0%,#16613a 100%)!important;border-color:#74d99c!important;box-shadow:0 8px 24px #0005,inset 0 0 0 1px rgba(255,255,255,.12)!important}
.leaderboard-board .leaderboard-category.active .leaderboard-medallion{border-color:#dff6e7;color:#fff;background:#0b4d2b}
.leaderboard-board .leaderboard-category.active strong{color:#fff}
.leaderboard-board .leaderboard-table.ceremonial{width:100%;margin:0;min-height:100%;box-sizing:border-box}
.leaderboard-board .leaderboard-detail-title{display:flex;align-items:center;justify-content:center;gap:12px;margin:0 0 14px}
.leaderboard-board .leaderboard-detail-title h2{margin:0;font:700 26px Georgia,serif;color:#f2dda0}
@media(max-width:760px){.leaderboard-board{grid-template-columns:1fr;gap:14px}.leaderboard-board .leaderboard-categories{grid-template-columns:repeat(2,minmax(0,1fr))!important}.leaderboard-board .leaderboard-category{min-height:74px!important;grid-template-columns:42px 1fr!important;padding:10px!important}.leaderboard-board .leaderboard-medallion{width:38px;height:38px;font-size:18px}.leaderboard-board .leaderboard-category strong{font-size:16px!important}}

/* 0.6.52 WooCommerce live product chooser */
.shop-card{max-width:560px}.shop-options{display:grid;gap:12px;margin-top:18px}.shop-option{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;padding:16px 18px}.shop-option>span{display:flex;align-items:center;gap:10px}.shop-option small{text-decoration:line-through;opacity:.62;font-weight:500}.shop-option b{font-size:1.05em}

/* 0.6.53 Apple web login */
.apple-mark{font-weight:900;min-width:34px;text-align:center;font-size:12px;letter-spacing:-.02em}


/* 0.6.54 — stable leaderboard, fullscreen gallery artwork and onboarding polish */
.gallery-artwork-trigger{display:block;width:100%;padding:0;border:0;background:none;cursor:zoom-in;border-radius:12px;overflow:hidden}
.gallery-artwork-trigger img{display:block;width:100%;height:auto}
.artwork-overlay{position:fixed;inset:0;z-index:7000;display:none;background:rgba(2,10,17,.97);align-items:center;justify-content:center;padding:max(18px,env(safe-area-inset-top)) 18px max(18px,env(safe-area-inset-bottom));box-sizing:border-box}
.artwork-overlay.show{display:flex}
.artwork-stage{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;min-width:0;min-height:0}
.artwork-stage img{display:block;max-width:96vw;max-height:calc(100dvh - 92px);width:auto;height:auto;object-fit:contain;box-shadow:0 18px 60px #000a}
.artwork-caption{flex:0 0 auto;text-align:center;display:flex;flex-direction:column;gap:3px;color:#dcebf5}
.artwork-caption strong{font:700 clamp(18px,2.2vw,28px) Georgia,serif;color:#f2dda0}
.artwork-caption span{font-size:13px;color:#b9cfdd}
.artwork-close{position:fixed;top:max(12px,env(safe-area-inset-top));right:max(14px,env(safe-area-inset-right));z-index:2;width:44px;height:44px;border-radius:50%;border:1px solid #5b7486;background:#0b2435;color:#fff;font-size:30px;line-height:1;cursor:pointer}
.leaderboard-board{width:min(1440px,calc(100vw - 48px))!important;grid-template-columns:minmax(300px,430px) minmax(520px,1fr)!important;gap:22px!important;align-items:stretch!important}
.leaderboard-board .leaderboard-categories{height:100%;grid-template-rows:repeat(4,minmax(74px,1fr))!important}
.leaderboard-board .leaderboard-category{min-height:0!important;height:100%!important}
.leaderboard-board .leaderboard-table.ceremonial{min-width:0!important;width:100%!important;height:100%!important;min-height:100%!important;margin:0!important}
.leaderboard-board .leaderboard-row{grid-template-columns:44px minmax(180px,1fr) minmax(110px,auto)!important}
.leaderboard-board .leaderboard-row span{min-width:0}
@media(max-width:760px){
 .leaderboard-board{width:100%!important;grid-template-columns:1fr!important;gap:12px!important}
 .leaderboard-board .leaderboard-categories{grid-template-columns:1fr!important;grid-template-rows:none!important;gap:7px!important}
 .leaderboard-board .leaderboard-category{min-height:56px!important;height:auto!important;grid-template-columns:38px 1fr!important;padding:8px 12px!important}
 .leaderboard-board .leaderboard-medallion{width:34px!important;height:34px!important;font-size:17px!important}
 .leaderboard-board .leaderboard-category strong{font-size:17px!important}
 .leaderboard-board .leaderboard-table.ceremonial{height:auto!important;min-height:260px!important;padding:12px!important}
 .leaderboard-board .leaderboard-row{grid-template-columns:32px minmax(0,1fr) auto!important;gap:7px!important}
 .leaderboard-board .leaderboard-row strong{font-size:11px!important}
 .artwork-stage img{max-width:98vw;max-height:calc(100dvh - 86px)}
}


/* 0.6.58 — responsive leaderboard, stable gallery card footer */
.rewards-page-body{max-width:100%;box-sizing:border-box}
#leaderboardTables{width:100%;max-width:100%;min-width:0;overflow:hidden}
.leaderboard-board{width:100%!important;max-width:1120px!important;min-width:0!important;margin:18px auto 0!important;grid-template-columns:clamp(210px,30%,340px) minmax(0,1fr)!important;gap:clamp(12px,2vw,22px)!important;box-sizing:border-box!important}
.leaderboard-board>*{min-width:0!important}
.leaderboard-board .leaderboard-table.ceremonial{overflow:hidden!important}
.leaderboard-board .leaderboard-list{min-width:0}
.leaderboard-board .leaderboard-row{grid-template-columns:36px minmax(0,1fr) minmax(86px,auto)!important;min-width:0!important}
.leaderboard-board .leaderboard-row span{min-width:0!important;overflow:hidden!important;text-overflow:ellipsis!important;white-space:nowrap!important}
.leaderboard-board .leaderboard-row strong{min-width:0;white-space:nowrap}
.gallery-item{display:flex;flex-direction:column;height:100%}
.gallery-item .gallery-copy{display:flex;flex:1 1 auto;flex-direction:column;min-height:0}
.gallery-item .gallery-copy em{margin-bottom:10px}
.gallery-item .gallery-diploma-btn{margin-top:auto}
@media(max-width:900px){
 .leaderboard-board{grid-template-columns:1fr!important;gap:12px!important}
 .leaderboard-board .leaderboard-categories{grid-template-columns:repeat(2,minmax(0,1fr))!important;grid-template-rows:none!important}
 .leaderboard-board .leaderboard-category{height:auto!important;min-height:64px!important}
}
@media(max-width:560px){
 .leaderboard-board .leaderboard-categories{grid-template-columns:1fr!important;gap:7px!important}
 .leaderboard-board .leaderboard-category{min-height:54px!important;padding:8px 11px!important}
 .leaderboard-board .leaderboard-row{grid-template-columns:28px minmax(0,1fr) auto!important}
}


/* 0.6.59 — final pre-native fixes */
/* Leaderboard: the host used to remain a two-column grid from the legacy four-board layout.
   It now contains one composite board, so it must occupy the full available width. */
#leaderboardTables.leaderboard-tables{
  display:block!important;
  width:100%!important;
  max-width:100%!important;
  min-width:0!important;
  margin-top:12px!important;
  overflow:visible!important;
}
.leaderboard-board{
  width:100%!important;
  max-width:100%!important;
  min-width:0!important;
  grid-template-columns:minmax(230px,300px) minmax(0,1fr)!important;
  gap:clamp(10px,1.8vw,18px)!important;
  align-items:stretch!important;
}
.leaderboard-board .leaderboard-categories{
  min-width:0!important;
  height:100%!important;
  grid-template-rows:repeat(4,minmax(58px,1fr))!important;
}
.leaderboard-board .leaderboard-category{
  box-sizing:border-box!important;
  width:100%!important;
  min-width:0!important;
}
.leaderboard-board .leaderboard-table.ceremonial{
  box-sizing:border-box!important;
  width:100%!important;
  max-width:100%!important;
  min-width:0!important;
  overflow:hidden!important;
}
.leaderboard-board .leaderboard-list,
.leaderboard-board .leaderboard-row{width:100%;max-width:100%;box-sizing:border-box}

/* Gallery: keep the diploma action at the bottom of every achievement card. */
.rewards-gallery{align-items:stretch!important}
.gallery-item{height:100%!important;display:flex!important;flex-direction:column!important}
.gallery-item .gallery-copy{display:flex!important;flex-direction:column!important;flex:1 1 auto!important}
.gallery-item .gallery-diploma-btn{margin-top:auto!important;align-self:stretch}

@media(max-width:760px){
  .leaderboard-board{grid-template-columns:1fr!important;gap:10px!important}
  .leaderboard-board .leaderboard-categories{
    grid-template-columns:1fr!important;
    grid-template-rows:none!important;
    height:auto!important;
    gap:6px!important;
  }
  .leaderboard-board .leaderboard-category{
    min-height:48px!important;
    height:auto!important;
    grid-template-columns:34px minmax(0,1fr)!important;
    padding:7px 10px!important;
  }
  .leaderboard-board .leaderboard-medallion{width:30px!important;height:30px!important;font-size:15px!important}
  .leaderboard-board .leaderboard-category strong{font-size:16px!important}
  .leaderboard-board .leaderboard-table.ceremonial{height:auto!important;min-height:220px!important}
}

/* Native 0.1.26: keep diploma actions clear of Android navigation and expose native-only actions. */
.native-only{display:none!important}
html.native-app .native-only{display:inline-flex!important}
html.native-app .exam-diploma-page{padding-bottom:max(76px,calc(env(safe-area-inset-bottom,0px) + 34px))!important}
html.native-app .exam-diploma-actions{margin-bottom:max(18px,env(safe-area-inset-bottom,0px))}

/* 0.6.62 — learning controls flow below the card, never in Android's nav area. */
.settings-section .answer-buttons-setting{justify-content:flex-start;margin:12px 0 16px;font-size:14px}
@media(max-width:900px){
  .card-stage{row-gap:5px!important}
  .card-stage>.tap-hint{position:static!important;transform:none!important;width:100%;margin:0!important;line-height:1.35}
  .card-stage>.tap-hint.hidden{display:none!important}
  html.native-app{--learn-nav-space:max(28px,env(safe-area-inset-bottom,0px))}
  html.native-app .learn-workspace{min-height:calc(100dvh - 64px - var(--learn-nav-space))!important}
  html.native-app .learn-details{margin-top:5px!important;padding-top:5px!important;padding-bottom:calc(var(--learn-nav-space) + 16px)!important}
  html.native-app .learn-details #statePanel{margin:0!important;padding:0!important}
}
/* 0.6.62 — leaderboard collection label fit */
@media(min-width:761px){
  .leaderboard-board{grid-template-columns:minmax(230px,300px) minmax(0,1fr)!important}
  .leaderboard-board .leaderboard-category strong{
    min-width:0!important;
    white-space:nowrap!important;
    overflow:visible!important;
    font-size:clamp(18px,1.8vw,24px)!important;
  }
}
@media(max-width:760px){
  .leaderboard-board .leaderboard-category strong{
    white-space:normal!important;
    overflow-wrap:anywhere!important;
    line-height:1.15!important;
  }
}
/* 0.6.63 — stable whole-pack self-rating, card feedback and calm quick checks. */
.rank-caption{display:block!important;text-align:center;font-size:12px;line-height:1.5;margin-top:4px;color:var(--muted)}
.rank-track .rank-marker{transition:left .35s ease}.rank-mask{transition:width .35s ease}
.settings-section .answer-buttons-setting{justify-content:flex-start;margin:12px 0 16px;font-size:14px}
.card-stage>.tap-hint{position:static!important;transform:none!important;width:100%;margin:5px 0 0!important;line-height:1.35}
.card-stage>.tap-hint.hidden{display:none!important}
.state-dot.grade-flash{position:relative;z-index:2;animation:gradeFlash .45s ease-out}
@keyframes gradeFlash{0%{transform:scale(1)}35%{transform:scale(1.6);box-shadow:0 0 6px 3px #fff,0 0 18px 7px #c5a75a}100%{transform:scale(1);box-shadow:none}}
body.exam-active>.app,body.quick-check-active>.app{visibility:hidden;pointer-events:none}
.quick-check-screen{display:none;position:fixed;inset:0;z-index:5001;overflow-y:auto;background:#000d31;color:#edf5fc;padding:env(safe-area-inset-top,0px) 16px max(28px,env(safe-area-inset-bottom,0px));box-sizing:border-box}
.quick-check-screen.show{display:block}.quick-header{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:720px;margin:12px auto 20px;color:#c5a75a}
.quick-header button{background:transparent;border:1px solid #c5a75a;color:#edf5fc;border-radius:12px;padding:10px 16px}
.quick-content{max-width:620px;margin:auto;text-align:center}.quick-content h2{font-size:clamp(20px,4vw,28px);line-height:1.35;margin:12px 0 20px}
.quick-media{display:block;max-width:100%;max-height:58dvh;width:auto;margin:0 auto 16px;object-fit:contain;border-radius:14px}.quick-media:is(audio){width:min(100%,420px);height:54px}
.quick-signal{font-size:42px;letter-spacing:.18em;color:#c5a75a;margin:18px 0}.quick-answers{display:grid;gap:12px;margin:20px 0}
.quick-choice{width:100%;padding:16px;text-align:left;font:inherit;font-size:18px;border:1px solid #597587;border-radius:14px;color:#fff;background:#10324b;cursor:pointer}
.quick-choice:disabled{opacity:1;cursor:default}.quick-choice.correct{background:#18603b;border-color:#73dc9c}.quick-choice.wrong{background:#812d39;border-color:#ffb4bf}
#quickCheckFeedback{line-height:1.6;font-size:17px}#quickCheckNext,#quickCheckReveal{margin:12px auto;min-width:220px}
@media(max-width:900px){.card-stage{row-gap:5px!important}.learn-details{margin-top:5px!important;padding-top:5px!important;padding-bottom:max(32px,env(safe-area-inset-bottom,0px))!important}}
@media(prefers-reduced-motion:reduce){.state-dot.grade-flash{animation:none;outline:2px solid #c5a75a}.rank-marker,.rank-mask{transition:none!important}}

/* 0.6.65 — restore the black diagonal quick-check pattern. */
.quick-check-screen{background:#000;isolation:isolate}
.quick-check-screen::before{content:"";position:fixed;inset:-25%;z-index:-2;pointer-events:none;background-image:var(--quick-pattern);background-repeat:repeat;transform:rotate(-7deg);transform-origin:center}
.quick-check-screen::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(90deg,rgba(0,0,0,.5),rgba(0,0,0,.06) 30%,rgba(0,0,0,.06) 70%,rgba(0,0,0,.5))}

.quick-audio-hint{font-size:14px;line-height:1.5;margin:0 auto 12px;color:#f3d995;max-width:540px;text-align:center}.quick-signal{letter-spacing:.06em;white-space:pre-wrap}

/* Exams are opaque pages; the home packs cannot show through safe-area gaps. */
body.exam-active>.app,body.exam-active>#rewardsScreen{visibility:hidden;pointer-events:none}
html.native-app .exam-overlay{inset:0!important;height:100dvh!important;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);box-sizing:border-box;background:#020c14}
@media(max-width:760px){html.native-app .exam-diploma-actions{width:100%;padding:0 4px;box-sizing:border-box}html.native-app .exam-diploma-actions button{min-width:calc(50% - 8px)}}

/* Native diploma sharing is handled by the system share sheet. */
html.native-app .web-only,html.native-app .exam-diploma-share-title{display:none!important}

/* Diploma content must retain its height so actions cannot overlap the image. */
.exam-diploma-preview{flex:0 0 auto;width:100%}
.exam-diploma-preview img{max-height:50dvh;object-fit:contain}
.exam-diploma-status{min-height:220px;display:grid;place-items:center;text-align:center;color:#f2dda0;font:600 21px Georgia,serif;line-height:1.5;padding:20px;box-sizing:border-box}
html.native-app .exam-diploma-actions{flex-direction:column;align-items:center;margin-top:30px;gap:16px;flex-shrink:0}
html.native-app #examDiplomaShare{background:#3eb54b;color:#04111c;border:0;font-weight:850;border-radius:14px;padding:15px 20px;width:min(100%,380px);box-shadow:0 6px 20px #0004}
html.native-app #examDiplomaShare:disabled{opacity:.6;cursor:wait}
html.native-app #examDiplomaNext{min-width:160px}

.exam-diploma-status{gap:18px;align-content:center}
.exam-diploma-status #examDiplomaHourglass{height:64px;width:auto;max-height:none;max-width:none;filter:drop-shadow(0 4px 5px #0008)}

.flash-wrap.image-load-failed .flash-card{display:none!important}
.card-image-error{box-sizing:border-box;min-height:260px;width:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:24px;text-align:center;background:#071722;color:#f3d995;border-radius:14px;line-height:1.5}
.card-image-error.hidden{display:none!important}
.card-image-error button{padding:12px 24px;border-radius:12px;background:#c5a75a;color:#071722;border:0;font:inherit;font-weight:700}

/* Compact quick-check media with room above the system navigation. */
.quick-check-screen{padding-bottom:max(40px,env(safe-area-inset-bottom,0px));scroll-padding-bottom:90px}
html.native-app .quick-check-screen{padding-bottom:max(90px,env(safe-area-inset-bottom,0px))}
.quick-header{margin:8px auto 12px}.quick-content h2{font-size:clamp(18px,4vw,25px);margin:8px 0 12px;line-height:1.3}
.quick-audio-hint{font-size:13px;margin:0 0 6px}.quick-media:is(audio){display:none}
.quick-replay{display:block;width:48px;height:48px;margin:8px auto 12px;border-radius:50%;border:1px solid #c5a75a;background:#10324b;color:#f3d995;font-size:30px;line-height:1;cursor:pointer}
.quick-media:is(video){max-height:32dvh;margin-bottom:8px}.quick-answers{gap:8px;margin:12px 0}.quick-choice{padding:12px;font-size:16px}
#quickCheckFeedback{font-size:16px;line-height:1.5;margin:12px 0 20px}
html.native-app{--native-bottom-space:80px}

/* UX 0.6.71: align cards and keep loading/auth states explicit. */
@media(max-width:900px){
  html.native-app .card-stage{justify-content:center!important;justify-items:center!important}
  .card-stage .flash-wrap{justify-self:center!important;margin-inline:auto!important}
}
@media(max-width:760px){
  .leaderboard-board .leaderboard-category{padding-left:6px!important;padding-right:16px!important}
}
.social-login-status{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:180px;text-align:center}
.social-login-status img{width:56px;height:72px}
.social-busy #loginForm,.social-busy .social-login-buttons{display:none!important}
.social-busy .overlay-card{position:relative}
.social-busy .social-login-status{position:absolute;inset:64px 20px 20px;background:#0a1e2f;z-index:5}
.quick-check-screen.media-loading #quickCheckQuestion{animation:none!important}
.quick-check-screen.media-loading #quickCheckMedia:before{content:"";display:block;width:40px;height:58px;margin:20px auto;background:url('../exam/assets/hourglass-animated.svg') center/contain no-repeat}

.social-busy #loginFormWrap{visibility:hidden;pointer-events:none}
.flash-wrap.image-loading:after{content:"";position:absolute;inset:0;z-index:4;background:#0a1e2f url('../exam/assets/hourglass-animated.svg') center/44px 64px no-repeat;border-radius:17px;pointer-events:none}
.flash-wrap.image-loading .flash-card{pointer-events:none}

/* One centered card track in every learning state. */
.card-stage{grid-template-columns:minmax(0,1fr);justify-content:center!important;justify-items:center!important}
.card-stage>.flash-wrap{justify-self:center!important;margin-inline:auto!important}

/* Keep diploma headings below the iPhone status bar and balance spare space. */
.exam-diploma-page{padding-top:calc(env(safe-area-inset-top,0px) + clamp(18px,3vh,34px))!important;justify-content:safe center}


/* Google Play localized price confirmation before native billing sheet */
.play-price-overlay{position:fixed;inset:0;z-index:12000;background:rgba(0,12,32,.8);display:grid;place-items:center;padding:20px}
.play-price-panel{width:min(100%,440px);background:#fff;color:#102639;border-radius:18px;padding:25px;box-shadow:0 20px 60px #0006;text-align:center}
.play-price-panel h2{font-size:22px;margin:0 0 18px}.play-price-panel p{margin:0 0 10px;line-height:1.5}.play-price-amount{display:block;font-size:24px;margin:8px 0 22px}.play-price-buttons{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.play-price-buttons button{border-radius:10px;padding:12px 18px;cursor:pointer}

/* Prevent rightward 'Meenus' card fly-out from creating horizontal viewport scrolling.
   The floating answer wheel must stay fixed while the card translates off-screen. */
html,body{overflow-x:clip}

/* Career, gallery and leaderboard help use the same centered viewport tooltip.
   Never anchor the text panel to the rightmost ? button on narrow devices. */
.rewards-help::after{
  position:fixed!important;
  left:50%!important;
  right:auto!important;
  top:50%!important;
  bottom:auto!important;
  box-sizing:border-box;
  width:min(320px,calc(100vw - 32px))!important;
  max-height:calc(100dvh - 48px);
  overflow-wrap:anywhere;
  white-space:normal;
  transform:translate(-50%,-50%)!important;
}
.rewards-help:hover::after,.rewards-help:focus::after,.rewards-help.show-tip::after{
  transform:translate(-50%,-50%)!important;
}

/* Body-level rewards help: one consistent, viewport-centered, non-clipping dialog. */
.rewards-help::after{display:none!important}
.rewards-help-overlay{position:fixed;inset:0;z-index:20000;display:none;align-items:center;justify-content:center;padding:16px;box-sizing:border-box;background:rgba(2,12,22,.58)}
.rewards-help-overlay.show{display:flex}
.rewards-help-dialog{position:relative;box-sizing:border-box;width:min(360px,100%);max-height:calc(100dvh - 32px);overflow:auto;padding:22px 36px 20px 20px;border:1px solid #456983;border-radius:12px;background:#04121d;color:#eaf6ff;box-shadow:0 12px 36px #0009}
.rewards-help-message{margin:0;font-size:14px;line-height:1.5;overflow-wrap:anywhere}
.rewards-help-dismiss{position:absolute;right:7px;top:6px;border:0;background:transparent;color:#eaf6ff;font-size:26px;padding:0 8px;cursor:pointer}

/* Topbar view toggles: clear inverse state while their panel is open. */
.topbar-actions :is(.reward-hub-btn,.settings-btn).is-active{
  background:#eaf6ff!important;
  border-color:#eaf6ff!important;
  box-shadow:inset 0 0 0 2px #082035,0 0 0 1px #eaf6ff!important;
}
.topbar-actions :is(.reward-hub-btn,.settings-btn).is-active img{
  filter:brightness(0) saturate(100%) invert(12%) sepia(34%) saturate(1050%) hue-rotate(162deg);
}

/* Multi-language leaderboard: give translated Finnish/German category labels room. */
@media(min-width:761px){
  .leaderboard-board{grid-template-columns:minmax(310px,360px) minmax(0,1fr)!important}
}
.leaderboard-board .leaderboard-category{
  grid-template-columns:58px minmax(0,1fr)!important;
  gap:12px!important;
  padding-inline:14px!important;
  min-width:0;
}
.leaderboard-board .leaderboard-category strong{
  min-width:0;
  font-size:clamp(15px,1.7vw,22px)!important;
  overflow-wrap:anywhere;
  line-height:1.2;
}
@media(max-width:760px){
  .leaderboard-board .leaderboard-categories{grid-template-columns:repeat(2,minmax(0,1fr))!important}
  .leaderboard-board .leaderboard-category{grid-template-columns:38px minmax(0,1fr)!important;padding:10px!important;gap:7px!important}
  .leaderboard-board .leaderboard-category strong{font-size:clamp(12px,3vw,16px)!important}
}
@media(max-width:390px){.leaderboard-board .leaderboard-categories{grid-template-columns:1fr!important}}

/* Language wheel artwork is optional; never leave untranslated graphics on screen. */
.answer-wheel.text-wheel .answer-wheel-image{display:none!important}
.answer-wheel.text-wheel .grade-hotspot{clip-path:none!important;border-radius:10px;background:#203b58;color:white;font-weight:700;font-size:clamp(9px,1.8vw,15px);line-height:1.15;text-align:center;display:flex;align-items:center;justify-content:center;padding:5px;white-space:normal}
.answer-wheel.text-wheel .grade-hotspot-up{background:#08734a}
.answer-wheel.text-wheel .grade-hotspot-left{background:#c02f36}
.answer-wheel.text-wheel .grade-hotspot-right{background:#363da1}
.answer-wheel.text-wheel .grade-hotspot-down{background:#a95711}
.answer-wheel:not(.text-wheel) .grade-hotspot{font-size:0;color:transparent}