:root{font-family:system-ui,'Microsoft JhengHei',sans-serif;color:#103b48;background:#07394b;font-synthesis:none}*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;overscroll-behavior:none}button,input{font:inherit}button{cursor:pointer;touch-action:manipulation;min-height:44px}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #e9a93c;outline-offset:3px}[hidden]{display:none!important}.shell{height:100vh;height:100dvh;max-width:1440px;margin:auto;padding:max(8px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) max(8px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));display:flex;flex-direction:column;gap:8px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-shrink:0;color:#f0f7ef;min-height:44px}.topbar h1{font-size:21px;margin:0;white-space:nowrap}.top-actions{display:flex;align-items:center;gap:8px}.icon-button{border:1px solid #7ca5ab;border-radius:8px;background:transparent;color:inherit;padding:8px 12px;font-size:14px}.music-volume{display:flex;align-items:center;gap:8px;font-size:13px}.music-volume input{width:75px;accent-color:#ffcd66;min-height:44px}.game{position:relative;flex:1;min-height:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:#08768b;border:1px solid #356777;border-radius:14px;overflow:hidden}.dashboard{display:grid;grid-template-columns:1fr 1fr 80px 44px;gap:24px;padding:12px 22px;color:#fff;background:#07394b;align-items:center}.label{display:block;font-size:12px;color:#9fc6ce;margin-bottom:4px}.dashboard strong{font-size:20px}.score-target{font-size:14px;color:#9fc6ce}.progress{height:4px;background:#28596b;border-radius:4px;margin-top:6px}.progress span{display:block;height:100%;background:#ffce69;transition:width .2s;border-radius:4px}.time-info strong{color:#ffce69;font-variant-numeric:tabular-nums}.time-info.urgent strong{color:#ff947d}.unit{font-size:12px;margin-left:4px}.ocean-wrap{position:relative;min-height:0;min-width:0;display:flex;align-items:center;justify-content:center;background:#054c60;overflow:hidden}canvas{display:block;flex-shrink:0;touch-action:none;user-select:none;-webkit-user-select:none}.controlbar{display:grid;grid-template-columns:1fr minmax(180px,280px) 64px;align-items:center;gap:16px;padding:12px 22px;background:#eef6f2;color:#315964}.hint{font-size:14px;line-height:1.6}.hint small{display:block;font-size:12px;color:#65878d}.primary{border:0;border-radius:9px;background:#ffcd66;color:#273d3e;min-height:48px;padding:12px 20px;font-size:16px;font-weight:800}.primary:hover:enabled{background:#ffda85}.primary:active:enabled{transform:translateY(1px)}.overlay{position:absolute;inset:0;display:grid;place-items:center;padding:16px;background:#023b4999;backdrop-filter:blur(3px)}.overlay-card{max-width:560px;width:100%;text-align:center;border-radius:18px;background:#f5fbf6;padding:24px}.badge{font-size:13px;color:#3d7778;font-weight:700}.overlay h2{font-size:30px;line-height:1.3;margin:12px 0}.overlay p{font-size:16px;line-height:1.7;color:#55777c;margin:10px 0 16px}.overlay-card>.primary{width:100%}.overlay .overlay-note{font-size:13px;margin:10px 0 0}.result-stats{display:flex;justify-content:center;gap:16px;font-size:13px;margin:12px 0;color:#527880}.result-stats strong{color:#167181;font-size:22px}.kindness{border-radius:10px;background:#e1efe8;padding:12px;margin:12px 0}.eyebrow{font-size:12px;letter-spacing:1px;font-weight:700;color:#437e83}.kindness p{margin:7px 0;font-size:15px}.text-button{background:none;border:0;color:#176c7c;text-decoration:underline;font-size:13px;min-height:36px}.toast{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);max-width:90%;width:max-content;padding:10px 16px;border-radius:20px;background:#07394bea;color:white;text-align:center;font-size:14px;pointer-events:none;opacity:0;transition:opacity .2s}.toast.show{opacity:1}.catch-lesson{width:min(620px,calc(100vw - 24px));max-height:calc(100vh - 24px);max-height:calc(100dvh - 24px);padding:22px;border:1px solid #c5dad9;border-radius:18px;background:#f8fcfb;color:#103b48;overflow:hidden}.catch-lesson::backdrop{background:#022d44b3;backdrop-filter:blur(4px)}.lesson-header{display:flex;gap:12px;align-items:center}.lesson-header>span{font-size:38px;flex-shrink:0}.lesson-header p{font-size:12px;color:#527c80;margin:0 0 5px}.lesson-header h2{font-size:23px;line-height:1.4;margin:0}.lesson-body{margin:18px 0;min-height:185px}.lesson-body h3{font-size:16px;margin:0 0 10px}.lesson-body p{font-size:16px;line-height:1.8;margin:0 0 12px}.lesson-body .lesson-paused,.lesson-body .source{font-size:13px;color:#628388;line-height:1.7}.lesson-body a{display:block;font-size:15px;line-height:1.8;color:#176c7c;margin-bottom:12px;text-underline-offset:4px}.lesson-footer{display:flex;justify-content:space-between;align-items:center;gap:10px;border-top:1px solid #dfedeb;padding-top:14px}.lesson-footer>span{font-size:12px;color:#527880;white-space:nowrap}.lesson-footer .primary{font-size:14px;padding:10px 14px}
@media(max-width:600px){.shell{gap:5px;padding-right:max(6px,env(safe-area-inset-right));padding-left:max(6px,env(safe-area-inset-left))}.topbar{flex-wrap:wrap;gap:0 8px}.topbar h1{font-size:17px}.top-actions{gap:6px}.top-actions .icon-button{font-size:12px;padding:7px}.music-volume{font-size:12px;gap:4px}.music-volume input{width:50px}.dashboard{grid-template-columns:minmax(0,1fr) minmax(0,1fr) 46px 44px;gap:8px;padding:9px 10px}.dashboard strong{font-size:15px}.label{font-size:11px}.score-target{font-size:12px}.controlbar{grid-template-columns:minmax(0,1fr) 54px;gap:8px;padding:8px 10px}.hint{grid-column:1/-1;text-align:center;font-size:12px}.hint span{display:none}.hint small{font-size:12px}.controlbar .primary{font-size:16px}.overlay{padding:10px}.overlay-card{padding:18px}.overlay h2{font-size:25px}.overlay p{font-size:14px;line-height:1.6;margin:8px 0 12px}.result-stats{gap:9px;font-size:11px}.result-stats strong{font-size:18px}.kindness{padding:9px;margin:9px 0}.kindness p{font-size:14px}.catch-lesson{padding:18px}.lesson-header h2{font-size:20px}.lesson-body{min-height:175px;margin:15px 0}.lesson-body p{font-size:15px}.toast{font-size:12px}}
@media(max-height:500px) and (orientation:landscape){.shell{gap:4px}.topbar{min-height:40px}.topbar h1{font-size:17px}.dashboard{padding:5px 14px;gap:16px}.label{font-size:10px;margin-bottom:2px}.dashboard strong{font-size:16px}.controlbar{padding:6px 14px}.overlay-card{max-width:900px;display:grid;grid-template-columns:1fr 1fr;gap:8px 20px;align-items:center;padding:14px 22px}.badge,.overlay h2{grid-column:1}.overlay h2{font-size:24px;margin:0}.overlay #overlay-copy{grid-column:1;margin:0;font-size:14px}.overlay #result-extras{grid-column:2;grid-row:1/4}.overlay #start{grid-column:2}.overlay .overlay-note{grid-column:1/-1;margin:0}.kindness{margin:6px 0;padding:6px}.result-stats{margin:6px 0}.catch-lesson{width:min(860px,calc(100vw - 24px));padding:16px 20px;display:grid;grid-template-columns:1fr 1.6fr;gap:12px 22px}.catch-lesson:not([open]){display:none}.lesson-header{align-self:start}.lesson-body{margin:0;min-height:0}.lesson-body p{font-size:14px;line-height:1.6}.lesson-header h2{font-size:20px}.lesson-footer{grid-column:1/-1;padding-top:8px}}

@media(max-width:600px) and (max-height:600px){.overlay-card{padding:12px}.overlay h2{font-size:22px;line-height:1.2;margin:6px 0}.overlay p{font-size:13px;line-height:1.5;margin:6px 0 8px}.overlay .overlay-note{font-size:12px;line-height:1.4;margin:7px 0 0}.kindness{padding:6px;margin:6px 0}.kindness p{font-size:13px;margin:4px 0}.result-stats{margin:6px 0}.kindness .text-button{min-height:32px}.catch-lesson{padding:12px}.lesson-body{min-height:0;margin:10px 0}.lesson-header h2{font-size:18px}.lesson-header>span{font-size:28px}.lesson-body p{font-size:14px;line-height:1.6}.lesson-body h3{font-size:14px;margin-bottom:6px}.lesson-footer{padding-top:8px}}

@media(max-height:500px) and (orientation:landscape){.topbar{flex-wrap:nowrap}.topbar .music-volume{display:none}.controlbar{grid-template-columns:1fr minmax(140px,220px) 54px;padding:5px 12px}.controlbar .hint{grid-column:auto;text-align:left}.lesson-body{min-height:0}.overlay h2{font-size:21px}.overlay p{font-size:13px}.overlay-card{padding:10px 16px}.result-stats{gap:8px}}

.overlay-note:empty{display:none}

/* Reading stays available on small screens and at enlarged text sizes. */
.overlay{overflow-y:auto;align-items:safe center}
.overlay-card{max-height:100%;overflow-y:auto}
.catch-lesson{overflow-y:auto}
.lesson-action{padding:12px 16px;background:#e4f1e9;border-left:3px solid #62a48e;border-radius:8px;margin:16px 0}
.lesson-action p:last-child{margin-bottom:0}
.sea-status{position:absolute;left:12px;top:10px;pointer-events:none;max-width:calc(100% - 24px);border-radius:9px;background:#07394bdf;color:#fff;padding:7px 11px;font-size:13px}
.sea-status small{display:block;color:#c5e4df;font-size:10px;margin-top:3px}
.reading-dialog{width:min(700px,calc(100vw - 24px));max-height:calc(100dvh - 24px);overflow-y:auto;padding:24px;border:1px solid #c5dad9;border-radius:18px;background:#f8fcfb;color:#103b48;line-height:1.7;overscroll-behavior:contain}
.reading-dialog::backdrop{background:#022d44b3;backdrop-filter:blur(4px)}
.reading-header{display:flex;align-items:center;justify-content:space-between;gap:12px}
.reading-dialog h2{margin:4px 0 12px;font-size:26px;line-height:1.4}
.reading-dialog h3{font-size:21px;line-height:1.5;margin:16px 0 10px}
.reading-dialog h4{font-size:15px;margin:14px 0 6px}
.reading-dialog p{margin:8px 0 14px}
.reading-note{font-size:13px;color:#52747a}
.reading-dialog a{color:#176c7c;text-underline-offset:4px;overflow-wrap:anywhere}
.journal-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 20px}
.journal-tab{border:1px solid #9fbfbd;border-radius:30px;background:#fff;color:#315964;padding:8px 13px;font-size:14px}
.journal-tab[aria-pressed=true]{background:#0c6271;color:#fff;border-color:#0c6271}
.journal-story{border-top:1px solid #d9e7e4;padding-top:16px}
.quiz-fieldset{border:0;padding:0;margin:20px 0}
.quiz-fieldset legend{font-size:19px;font-weight:700;line-height:1.6;padding:0;margin-bottom:14px}
.quiz-options{display:grid;gap:10px}
.quiz-option{width:100%;padding:13px 16px;text-align:left;border:1px solid #adc7c6;border-radius:10px;background:white;color:#244d58;line-height:1.5}
.quiz-option:hover:enabled{border-color:#0c6271;background:#edf6f2}
.quiz-option:disabled{opacity:1}
.quiz-option.correct{border-color:#448369;background:#e1f2e6;color:#22573d}
.quiz-option.incorrect{border-color:#b88242;background:#fff1df;color:#715024}
.quiz-feedback{background:#eaf3ef;padding:14px;border-radius:10px;font-size:15px}
.quiz-dialog>.primary{width:100%}
.overlay .learning-summary{font-size:13px;line-height:1.6;padding:10px;background:#e6f1f1;border-radius:9px;text-align:left;color:#315964}
@media(max-width:600px){
  .topbar{gap:5px}.top-actions{flex-wrap:wrap;justify-content:flex-end}.topbar .music-volume{display:none}
  .reading-dialog{padding:18px}.reading-dialog h2{font-size:23px}.reading-dialog h3{font-size:19px}
  .reading-header .icon-button{padding:8px;white-space:nowrap}.journal-tab{font-size:13px;padding:7px 10px}
  .sea-status{font-size:11px;left:8px;top:8px;padding:5px 8px}.sea-status small{font-size:9px}
  .lesson-footer{flex-wrap:wrap}.lesson-footer .primary{flex:1}
}
@media(prefers-reduced-motion:reduce){.progress span,.toast{transition:none}}
.action-form{display:grid;gap:14px}.action-form label{display:grid;gap:6px;font-weight:700}.action-form select,.action-form textarea{width:100%;font:inherit;color:#244d58;background:#fff;border:1px solid #adc7c6;border-radius:9px;padding:10px;min-height:44px}.action-form textarea{resize:vertical}.action-form .reading-note{font-weight:400;margin:0}#action-plan{white-space:pre-wrap;overflow-wrap:anywhere}#action-result .primary{font-size:14px}.kindness .icon-button{margin-top:6px}