@import"https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Fraunces:opsz,wght@9..144,600;9..144,700&display=swap";:root{font-family:DM Sans,ui-sans-serif,system-ui,sans-serif;color:#123f58;background:#f7f1df;font-synthesis:none;text-rendering:optimizeLegibility;--ink: #123f58;--ink-soft: #496879;--water: #0b6b7b;--water-light: #d9f1e9;--coral: #e97971;--coral-dark: #c9585e;--gold: #e9ad4e;--gold-light: #fff0c3;--cream: #fffdf6;--sand: #f7f1df;--line: rgba(18, 63, 88, .12);--shadow: 0 18px 40px rgba(18, 63, 88, .13)}*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0}body{min-width:320px;overflow:hidden;background:var(--sand)}button,select{font:inherit}[hidden]{display:none!important}button{cursor:pointer}button:focus-visible,select:focus-visible,a:focus-visible{outline:4px solid rgba(233,173,78,.72);outline-offset:3px}.app-shell{display:grid;grid-template-rows:auto minmax(0,1fr) auto;height:100dvh;min-height:560px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.1rem clamp(1rem,4vw,4.5rem) .8rem}.brand{display:inline-flex;align-items:center;gap:.65rem;color:var(--ink);text-decoration:none}.brand-mark{display:grid;place-items:center;width:2.2rem;height:2.2rem;border-radius:.7rem;color:var(--gold);background:var(--ink);font-size:1.25rem;box-shadow:0 5px #123f5829}.brand-kicker,.brand-title{display:block}.brand-kicker{color:var(--coral-dark);font-size:.68rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase}.brand-title{font-family:Fraunces,Georgia,serif;font-size:1.2rem;font-weight:700;line-height:1.05}.topbar-actions{display:flex;align-items:center;gap:1rem}.round-label,.eyebrow{color:var(--coral-dark);font-size:.68rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase}.round-label{color:var(--ink-soft);font-size:.62rem}.icon-button,.small-button,.dialog-close{border:1px solid var(--line);color:var(--ink);background:#fffdf6b8}.icon-button{display:grid;place-items:center;width:2.5rem;height:2.5rem;border-radius:.8rem;font-size:1.15rem;transition:.16s ease}.icon-button:hover,.small-button:hover{border-color:#123f584d;transform:translateY(-1px)}.icon-button.is-muted{color:var(--ink-soft)}.game-layout{position:relative;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(330px,.8fr);gap:clamp(1rem,3vw,3.8rem);width:min(1260px,100%);min-height:0;margin:0 auto;padding:0 clamp(1rem,4vw,4.5rem)}.scene-panel{position:relative;min-width:0;min-height:0;overflow:hidden;border-radius:2rem;background:#0b6078;box-shadow:var(--shadow)}.game-container{position:absolute;top:0;right:0;bottom:0;left:0}.game-container canvas{display:block;width:100%!important;height:100%!important}.scene-caption{position:absolute;z-index:3;left:1.3rem;bottom:1.1rem;display:flex;align-items:center;gap:.5rem;color:#fffdf6d6;font-size:.75rem;font-weight:600}.scene-caption-dot{width:.45rem;height:.45rem;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px #e9ad4e29}.play-panel{position:relative;min-width:0;min-height:0;overflow:auto;display:flex;align-items:center}.screen{width:100%;padding:clamp(1.25rem,3vw,2.75rem) 0}.menu-screen,.complete-screen{margin:auto 0}.eyebrow{margin:0 0 .8rem}h1,h2{margin:0;color:var(--ink);font-family:Fraunces,Georgia,serif;font-weight:700;letter-spacing:-.04em;line-height:.98}h1{font-size:clamp(2.6rem,5vw,4.45rem)}h1 span,h2 span{color:var(--coral)}h2{font-size:clamp(2.5rem,4vw,3.8rem)}.intro-copy{max-width:30rem;margin:1.1rem 0 1.8rem;color:var(--ink-soft);font-size:clamp(.95rem,1.5vw,1.08rem);line-height:1.55}.primary-button{display:inline-flex;align-items:center;justify-content:space-between;gap:1.2rem;min-height:3.55rem;padding:.7rem .85rem .7rem 1.25rem;border:0;border-radius:1.15rem;color:var(--cream);background:var(--coral);box-shadow:0 6px 0 var(--coral-dark),0 14px 24px #c9585e33;font-size:.98rem;font-weight:700;transition:transform .16s ease,box-shadow .16s ease}.primary-button:hover{transform:translateY(-2px);box-shadow:0 8px 0 var(--coral-dark),0 18px 28px #c9585e38}.primary-button:active{transform:translateY(3px);box-shadow:0 3px 0 var(--coral-dark),0 8px 16px #c9585e29}.button-arrow{display:grid;place-items:center;width:2.25rem;height:2.25rem;border-radius:.75rem;color:var(--coral-dark);background:var(--gold-light);font-size:1.3rem}.compact-button{min-height:2.9rem;padding-left:1rem;font-size:.86rem}.text-button{display:block;width:fit-content;margin:1.5rem 0 0;padding:0;border:0;border-bottom:1px solid currentColor;color:var(--ink-soft);background:transparent;font-size:.82rem}.text-button:hover{color:var(--coral-dark)}.menu-note{display:flex;align-items:center;gap:.6rem;margin-top:2.3rem;color:var(--ink-soft);font-size:.78rem}.pearl-icon{color:var(--gold);font-size:1.2rem;text-shadow:0 0 .7rem rgba(233,173,78,.6)}.level-picker{margin:1.1rem 0 1.25rem}.level-picker-heading{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.55rem;color:var(--ink);font-size:.74rem;font-weight:700}.level-picker-heading span:last-child{color:var(--coral-dark);font-size:.68rem;text-transform:uppercase;letter-spacing:.08em}.level-picker-options{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:.4rem}.level-button{min-width:0;padding:.48rem .2rem .42rem;border:1px solid var(--line);border-radius:.75rem;color:var(--ink-soft);background:#fffdf69e;transition:.15s ease}.level-button:hover,.level-button.is-selected{border-color:var(--gold);color:var(--ink);background:var(--gold-light);transform:translateY(-1px)}.level-button.is-selected{box-shadow:0 3px #e9ad4e4d}.level-number,.level-caption{display:block}.level-number{font-family:Fraunces,Georgia,serif;font-size:1.15rem;font-weight:700;line-height:1}.level-caption{margin-top:.3rem;font-size:.48rem;font-weight:700;line-height:1.05;text-transform:uppercase}.game-screen{margin:auto 0}.game-header{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}.game-header-actions{display:flex;align-items:center;gap:.4rem}.game-header .eyebrow{margin-bottom:.2rem}.question-count{margin:0;color:var(--ink-soft);font-size:.86rem;font-weight:600}.small-button{padding:.52rem .75rem;border-radius:.7rem;font-size:.72rem;font-weight:700}.end-game-button{color:var(--coral-dark)}.small-button:disabled{cursor:default;opacity:.55;transform:none}.progress-trail{display:flex;gap:clamp(.34rem,1vw,.65rem);margin:1.25rem 0 1.4rem}.trail-pearl{display:block;width:clamp(.72rem,1.8vw,.98rem);height:clamp(.72rem,1.8vw,.98rem);border:2px solid rgba(18,63,88,.17);border-radius:50%;background:transparent;transition:.2s ease}.trail-pearl.is-current{border-color:var(--gold);background:var(--gold-light);box-shadow:0 0 0 4px #e9ad4e24}.trail-pearl.is-done{border-color:var(--gold);background:var(--gold)}.question-card{padding:clamp(1.1rem,2.2vw,1.65rem);border:1px solid rgba(18,63,88,.1);border-radius:1.4rem;background:#fffdf6bf;box-shadow:0 8px 24px #123f580f}.question-prompt{margin:0;color:var(--ink-soft);font-size:.77rem;font-weight:600}.equation{margin:.8rem 0 0;color:var(--ink);font-family:Fraunces,Georgia,serif;font-size:clamp(2.6rem,6vw,4rem);font-weight:700;letter-spacing:.02em;line-height:1;text-align:center}.hint-card{display:flex;align-items:center;gap:.55rem;margin-top:1rem;padding:.65rem .75rem;border-radius:.8rem;color:#7d5b18;background:var(--gold-light);font-size:.75rem;font-weight:600}.hint-icon{font-size:1.15rem}.answer-heading{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin:1.5rem 0 .65rem;color:var(--ink);font-size:.79rem;font-weight:700}.keyboard-hint{color:var(--ink-soft);font-size:.66rem;font-weight:500}.answer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(.5rem,1.3vw,.85rem)}.answer-button{min-width:0;min-height:clamp(4.8rem,10vw,6.4rem);padding:.7rem .35rem;border:2px solid rgba(18,63,88,.12);border-radius:1.15rem;color:var(--ink);background:var(--cream);box-shadow:0 5px #123f5817;transition:.15s ease}.answer-button:focus-visible{border-color:var(--water);background:var(--water-light);transform:translateY(-2px)}.answer-button:active:not(:disabled){transform:translateY(3px);box-shadow:0 2px #123f5817}.answer-button:disabled{cursor:default;opacity:.74}.answer-button.is-wrong{border-color:var(--coral);background:#ffdfd4;animation:wobble .36s ease}.answer-number{display:block;font-family:Fraunces,Georgia,serif;font-size:clamp(1.8rem,4vw,2.55rem);font-weight:700;line-height:1}.answer-label{display:block;margin-top:.45rem;color:var(--ink-soft);font-size:.58rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.feedback{display:flex;align-items:center;justify-content:center;gap:.5rem;min-height:2.5rem;margin-top:.8rem;color:var(--ink-soft);font-size:.77rem;font-weight:600;text-align:center}.feedback-dot{width:.45rem;height:.45rem;flex:0 0 auto;border-radius:50%;background:var(--gold)}.feedback.retry{color:var(--coral-dark)}.feedback.retry .feedback-dot{background:var(--coral)}.feedback.correct{color:#2b876e}.feedback.correct .feedback-dot{background:#45a889}.is-celebrating .question-card{animation:card-pop .5s ease}.complete-screen{text-align:center}.complete-screen .intro-copy{margin-left:auto;margin-right:auto}.completion-star{display:grid;place-items:center;width:4.4rem;height:4.4rem;margin:0 auto 1.1rem;border-radius:1.4rem;color:var(--gold);background:var(--ink);box-shadow:0 7px #123f5829;font-size:2.25rem;animation:float 2.4s ease-in-out infinite}.result-card{display:grid;grid-template-columns:repeat(3,1fr);max-width:24rem;margin:0 auto 1.8rem;border:1px solid var(--line);border-radius:1.1rem;background:#fffdf6b3;overflow:hidden}.result-card>div{padding:.95rem .65rem}.result-card>div+div{border-left:1px solid var(--line)}.result-value,.result-label{display:block}.result-value{color:var(--coral);font-family:Fraunces,Georgia,serif;font-size:1.8rem;font-weight:700}.result-label{color:var(--ink-soft);font-size:.68rem;font-weight:600}.complete-screen .primary-button{text-align:left}.complete-screen .text-button{margin-left:auto;margin-right:auto}.footer-note{display:flex;justify-content:center;align-items:center;gap:.5rem;padding:.8rem 1rem 1rem;color:#123f588a;font-size:.68rem;font-weight:600}.footer-separator{color:var(--gold)}.settings-dialog{width:min(92vw,28rem);padding:0;border:0;border-radius:1.5rem;color:var(--ink);background:var(--cream);box-shadow:0 28px 80px #123f5847}.settings-dialog::backdrop{background:#123f586b;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.settings-dialog form{padding:1.5rem}.dialog-heading{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:1.4rem}.dialog-heading .eyebrow{margin-bottom:.35rem}.dialog-heading h2{font-size:2rem}.dialog-close{display:grid;place-items:center;width:2rem;height:2rem;border-radius:.6rem;font-size:1.35rem;line-height:1}.field-label{display:block;margin:1rem 0 .45rem;color:var(--ink);font-size:.76rem;font-weight:700}.select-field{width:100%;padding:.75rem;border:1px solid var(--line);border-radius:.75rem;color:var(--ink);background:#fff}.switch-row{position:relative;display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-top:1.2rem;padding-top:.9rem;border-top:1px solid var(--line)}.switch-row .field-label{margin:0}.field-help{display:block;margin-top:.2rem;color:var(--ink-soft);font-size:.68rem;font-weight:500}.switch-row input{position:absolute;width:1px;height:1px;opacity:0}.switch-track{width:2.9rem;height:1.7rem;padding:.2rem;border-radius:2rem;background:#bed1d0;transition:.16s ease}.switch-knob{display:block;width:1.3rem;height:1.3rem;border-radius:50%;background:#fff;box-shadow:0 1px 4px #123f582e;transition:.16s ease}.switch-row input:checked+.switch-track{background:var(--coral)}.switch-row input:checked+.switch-track .switch-knob{transform:translate(1.2rem)}.dialog-actions{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-top:1.8rem}.danger-button{padding:0;border:0;color:var(--coral-dark);background:transparent;font-size:.72rem;font-weight:700}.confirmation-copy{margin:0;color:var(--ink-soft);font-size:.86rem;line-height:1.55}.confirmation-dialog .dialog-actions{justify-content:flex-end}.confirmation-dialog .text-button{margin:0 auto 0 0}@keyframes wobble{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}@keyframes card-pop{0%{transform:scale(1)}45%{transform:scale(1.018)}to{transform:scale(1)}}@keyframes float{0%,to{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-7px) rotate(3deg)}}@media(max-width:780px){.app-shell{min-height:540px}.topbar{padding-top:max(.7rem,env(safe-area-inset-top))}.round-label{display:none}.game-layout{grid-template-columns:1fr;grid-template-rows:minmax(180px,34dvh) minmax(0,1fr);gap:.85rem;padding:0 .85rem}.app-shell.is-complete .game-layout{grid-template-rows:minmax(0,1fr)}.app-shell.is-complete .scene-panel{position:absolute;top:0;left:0;width:1px;height:1px;min-height:1px;opacity:0;overflow:hidden;pointer-events:none}.scene-panel{border-radius:1.35rem}.play-panel{overflow:auto;padding:0 .25rem}.screen{padding:.65rem 0 1rem}.menu-screen,.complete-screen{text-align:center}.menu-screen .intro-copy,.complete-screen .intro-copy,.menu-screen .primary-button,.complete-screen .primary-button{margin-left:auto;margin-right:auto}.menu-note{justify-content:center;margin-top:1.25rem}.menu-screen .text-button{margin-left:auto;margin-right:auto}.menu-screen .level-picker{max-width:25rem;margin-left:auto;margin-right:auto;text-align:left}h1{font-size:clamp(2.4rem,10vw,3.5rem)}.footer-note{padding-bottom:max(.6rem,env(safe-area-inset-bottom))}}@media(max-height:760px){.app-shell:not(.is-playing):not(.is-complete) .play-panel{overflow:hidden}.app-shell:not(.is-playing):not(.is-complete) .screen{padding-top:.75rem;padding-bottom:.75rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .intro-copy{margin-top:.75rem;margin-bottom:1rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .level-picker{margin-top:.65rem;margin-bottom:.8rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .menu-note{margin-top:1rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .text-button{margin-top:1rem}}@media(max-width:390px){.topbar{padding-left:.85rem;padding-right:.85rem}.brand-title{font-size:1.03rem}.brand-mark{width:1.9rem;height:1.9rem}.game-layout{grid-template-rows:minmax(120px,22dvh) minmax(0,1fr);padding:0 .65rem}.scene-caption{left:.8rem;bottom:.7rem;font-size:.64rem}.game-screen{padding-top:.15rem}.progress-trail{margin-top:.4rem;margin-bottom:.65rem}.question-card{padding:.65rem}.question-prompt{font-size:.68rem}.equation{margin-top:.45rem;font-size:2.25rem}.hint-card{margin-top:.5rem;padding:.45rem .6rem;font-size:.68rem}.answer-heading{margin-top:.65rem}.answer-button{min-height:3.6rem;border-radius:.9rem}.answer-number{font-size:1.75rem}.answer-label{font-size:.52rem}.feedback{min-height:1.7rem;margin-top:.3rem;font-size:.68rem}.level-picker{margin-top:.8rem;margin-bottom:.9rem}.level-picker-options{gap:.25rem}.level-button{padding-top:.38rem;padding-bottom:.34rem;border-radius:.62rem}.level-caption{font-size:.42rem}.game-header-actions{gap:.25rem}.game-header-actions .small-button{padding-left:.52rem;padding-right:.52rem}.complete-screen{padding-top:.35rem;padding-bottom:.55rem}.completion-star{width:3.5rem;height:3.5rem;margin-bottom:.7rem;border-radius:1.05rem;font-size:1.75rem}.complete-screen h2{font-size:2.45rem}.complete-screen .intro-copy{margin-top:.75rem;margin-bottom:1rem;font-size:.85rem}.result-card{margin-bottom:1rem}.result-card>div{padding:.7rem .35rem}.result-value{font-size:1.35rem}.result-label{font-size:.57rem}}@media(max-width:390px)and (max-height:700px){.app-shell:not(.is-playing):not(.is-complete) .game-layout{grid-template-rows:minmax(104px,17dvh) minmax(0,1fr);gap:.5rem}.app-shell:not(.is-playing):not(.is-complete) .play-panel{overflow:hidden}.app-shell:not(.is-playing):not(.is-complete) .screen{padding-top:.25rem;padding-bottom:.25rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .eyebrow{margin-bottom:.45rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen h1{font-size:2.15rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .intro-copy{margin-top:.55rem;margin-bottom:.75rem;font-size:.9rem;line-height:1.35}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .level-picker{margin-top:.55rem;margin-bottom:.65rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .primary-button{min-height:3rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .menu-note{margin-top:.65rem}.app-shell:not(.is-playing):not(.is-complete) .menu-screen .text-button{margin-top:.8rem}}@media(orientation:landscape)and (max-height:620px){.app-shell{min-height:420px}.topbar{padding-top:.55rem;padding-bottom:.45rem}.game-layout{grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:1.1rem}.screen{padding-top:.25rem;padding-bottom:.25rem}.progress-trail{margin-top:.75rem;margin-bottom:.75rem}.question-card{padding:.8rem 1rem}.equation{margin-top:.4rem;font-size:2.5rem}.answer-heading{margin-top:.7rem}.answer-button{min-height:4.3rem}.feedback{min-height:1.7rem;margin-top:.3rem}.footer-note{padding:.35rem 1rem}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}