._shell_1nbfj_1{min-height:100vh}._skipLink_1nbfj_5{z-index:100;top:var(--space-3);left:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);color:var(--color-on-accent);background:var(--color-accent-strong);font-weight:800;transition:transform .16s ease-out;position:fixed;transform:translateY(-180%)}@media (prefers-reduced-motion:reduce){._skipLink_1nbfj_5{transition:none}}._skipLink_1nbfj_5:focus{transform:translateY(0)}._sidebar_1nbfj_29{display:none}._brand_1nbfj_33{align-items:center;gap:var(--space-3);color:var(--color-text);text-decoration:none;display:flex}._brandMark_1nbfj_41{border-radius:var(--radius-md);width:3rem;height:3rem;color:var(--color-on-accent);background:var(--color-accent-strong);font-family:var(--font-khmer);place-items:center;font-size:1.8rem;line-height:1;display:grid}._brandText_1nbfj_54{font-weight:850;display:grid}._brandText_1nbfj_54 small{color:var(--color-text-muted);font-size:var(--font-size-xs);font-weight:600}._navigation_1nbfj_65{gap:var(--space-2);margin-top:var(--space-8);display:grid}._navLink_1nbfj_71{align-items:center;gap:var(--space-3);border-radius:var(--radius-md);min-height:2.75rem;padding:var(--space-2) var(--space-3);color:var(--color-text-muted);font-weight:750;text-decoration:none;display:flex}._navLink_1nbfj_71:hover{color:var(--color-text);background:var(--color-surface-muted)}._navLinkActive_1nbfj_88{color:var(--color-accent-strong);background:var(--color-accent-soft)}._navIcon_1nbfj_93{text-align:center;width:1.5rem;font-size:1.25rem}._main_1nbfj_99{width:min(100% - 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2rem);padding:.75rem 1rem;display:flex;position:fixed;box-shadow:0 .35rem 1.5rem #2c17122e}._status_1bvnw_1 button{pointer-events:auto}._status_1bvnw_1 p{margin:0;line-height:1.4}._silent_1bvnw_30{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:fixed;inset:auto;overflow:hidden}@media (width<=51.999rem){._status_1bvnw_1{left:max(1rem, env(safe-area-inset-left));bottom:calc(5rem + env(safe-area-inset-bottom));flex-wrap:wrap}}:root{--color-canvas:#f4efe5;--color-surface:#fffdf8;--color-surface-muted:#f1ece2;--color-text:#20201e;--color-text-muted:#665f55;--color-border:#d4c9b5;--color-accent:#285a4f;--color-accent-strong:#1f4b42;--color-accent-soft:#dce9e1;--color-on-accent:#fff;--color-warning:#8a5615;--color-warning-soft:#f8e6c5;--color-danger:#963c34;--color-danger-soft:#f5deda;--color-info:#345b7d;--color-info-soft:#deebf4;--font-ui:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-khmer:"Noto Sans Khmer", "Khmer OS System", "Leelawadee UI", sans-serif;--font-size-xs:.78rem;--font-size-sm:.9rem;--font-size-lg:clamp(1.35rem, 4vw, 1.8rem);--font-size-xl:clamp(2rem, 6vw, 3.5rem);--font-size-khmer-sm:1.8rem;--font-size-khmer-md:2.5rem;--font-size-khmer-lg:clamp(3rem, 10vw, 4.25rem);--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--radius-sm:.55rem;--radius-md:.85rem;--radius-lg:1.25rem;--shadow-card:0 18px 45px #4c3d241a;--shadow-up:0 -8px 24px #4c3d241a;color:var(--color-text);background:var(--color-canvas);font-family:var(--font-ui);font-synthesis:none;text-rendering:optimizelegibility}*{box-sizing:border-box}body{background:radial-gradient(circle at top left, #d7a54f2e, transparent 34rem), var(--color-canvas);min-width:320px;min-height:100vh;margin:0}a{color:var(--color-accent-strong)}a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--color-info);outline-offset:3px}[lang=km]{max-width:100%;font-family:var(--font-khmer);overflow-wrap:anywhere}button{font:inherit;min-height:48px;color:inherit;cursor:pointer;touch-action:manipulation;background:#fffdf8;border:1px solid #403c34;border-radius:.8rem;padding:.75rem 1rem}button:hover:not(:disabled){background:#f7ead0}button:disabled{cursor:default}.app-shell{width:min(100% - 2rem,62rem);margin-inline:auto;padding-block:clamp(1.5rem,5vw,3.5rem)}.learning-experience{min-width:0}.app-header{justify-content:space-between;align-items:end;gap:2rem;margin-bottom:1.25rem;display:flex}h1,h2,p{margin-top:0}h1{max-width:18ch;margin-bottom:0;font-family:Georgia,serif;font-size:clamp(2rem,6vw,3.5rem);line-height:1.03}.learning-experience__title{max-width:18ch;margin-bottom:0;font-family:Georgia,serif;font-size:clamp(1.75rem,5vw,2.6rem);line-height:1.08}.eyebrow{color:#775116;letter-spacing:.12em;text-transform:uppercase;margin-bottom:.45rem;font-size:.78rem;font-weight:800}.progress-summary{color:#264c43;background:#dce9e1;border-radius:999px;flex:none;margin-bottom:.25rem;padding:.55rem .9rem;font-weight:750}.view-switcher{background:#e2dacb;border-radius:1rem;grid-template-columns:repeat(2,1fr);gap:.5rem;max-width:30rem;margin:2rem auto 1rem;padding:.35rem;display:grid}.view-switcher button{background:0 0;border-color:#0000;font-weight:750}.view-switcher button.active{background:#fffdf8;box-shadow:0 2px 8px #322a1e1f}.learn-card,.mini-quiz{background:#fffdf8;border:1px solid #d4c9b5;border-radius:1.5rem;width:min(100%,38rem);min-height:29rem;margin-inline:auto;padding:clamp(1.1rem,4vw,2rem);box-shadow:0 18px 45px #4c3d241a}.learn-card__progress{color:#746d62;text-align:right}.learn-card__content,.mini-quiz{text-align:center}.learn-card__grapheme,.mini-quiz__grapheme{font-family:var(--font-khmer);margin:1rem 0 0;font-size:clamp(7rem,28vw,11rem);font-weight:500;line-height:1.15}.learn-card__name,.mini-quiz__answer-name{margin-bottom:.25rem;font-size:clamp(1.45rem,5vw,2rem)}.learn-card__transliteration,.mini-quiz__answer-transliteration{color:#6d6252;margin-bottom:1.25rem;font-size:1.05rem}.audio-button{flex-wrap:wrap;justify-content:center;align-items:center;gap:.6rem;display:flex}.audio-button button{color:#fff;background:#285a4f;border-color:#285a4f;min-width:10rem;font-weight:800}.audio-button button:hover:not(:disabled){background:#1f4b42}.audio-button>span{color:#a33f36;font-size:.9rem}.learn-card__audio{margin:0 auto 1.4rem}.learn-card__assessment,.mini-quiz__assessment,.learn-card__navigation{justify-content:center;gap:.75rem;margin-top:1.25rem;display:flex}.learn-card__assessment-button--known,.mini-quiz__assessment button:last-child,.mini-quiz__continue-button{color:#fff;background:#285a4f;border-color:#285a4f;font-weight:750}.learn-card__navigation{border-top:1px solid #eee6d8;justify-content:space-between;padding-top:1.25rem}.mini-quiz h2{margin-bottom:1.5rem;font-size:1.7rem}.mini-quiz__prompt{color:#5a5145;min-height:3rem;font-size:1.1rem}.mini-quiz__audio{margin:1.25rem auto}.mini-quiz__choices{grid-template-columns:repeat(auto-fit,minmax(7rem,1fr));gap:.8rem;margin-block:2rem;display:grid}.mini-quiz__choice{min-height:8.5rem;font-family:var(--font-khmer);font-size:clamp(4rem,14vw,6rem);line-height:1}.mini-quiz__choice--correct,.mini-quiz__choice--correct:disabled{opacity:1;background:#d9ebdf;border:3px solid #28644f}.mini-quiz__choice--incorrect,.mini-quiz__choice--incorrect:disabled{opacity:1;background:#f5deda;border:3px solid #a33f36}.mini-quiz__feedback{background:#f1ece2;border-radius:1rem;padding:1rem}.mini-quiz__feedback-symbol{font-family:var(--font-khmer);margin-bottom:0;font-size:4rem;line-height:1.1}.mini-quiz__feedback .audio-button{margin-block:.8rem}.mini-quiz__reveal-button{margin-top:2rem}.progress-list{width:min(100%,38rem);margin:2rem auto 0}.progress-list h2{font-size:1.15rem}.progress-list ul{grid-template-columns:repeat(auto-fill,minmax(9rem,1fr));gap:.65rem;margin:0;padding:0;list-style:none;display:grid}.progress-list li{min-width:0}.progress-list__letter{text-align:left;grid-template-columns:3rem 1fr;align-items:center;width:100%;min-height:5.2rem;padding:.5rem .7rem;display:grid}.progress-list__letter>span:first-child{font-family:var(--font-khmer);grid-row:1/3;font-size:2.4rem}.progress-list strong{font-size:.86rem}.progress-list strong[data-status=known]{color:#28644f}.progress-list strong[data-status=learning]{color:#945b13}.empty-state{text-align:center}.empty-state h1{margin-inline:auto}.source-credit{color:#6d6252;text-align:center;width:min(100%,38rem);margin:2.5rem auto 0;font-size:.85rem;line-height:1.5}.source-credit a{color:#285a4f}@media (width<=42rem){.app-shell{width:min(100% - 1rem,62rem)}.app-header{display:block}.progress-summary{margin-top:1rem;display:inline-block}.learn-card,.mini-quiz{border-radius:1.15rem;min-height:27rem}.learn-card__assessment,.mini-quiz__assessment{flex-direction:column}}