*{box-sizing:border-box} :root{color-scheme:light;--blue:#285cdb;--ink:#243655;--muted:#65748c;--yellow:#ffc94a} body{margin:0;background:#f2f6ff;color:var(--ink);font-family:ui-rounded,"SF Pro Rounded","Hiragino Sans GB","PingFang SC",system-ui,sans-serif;font-size:16px}button,a,summary{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;touch-action:manipulation}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #173b9b;outline-offset:5px}button:disabled{opacity:.35;cursor:default}header{max-width:1120px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:30px 32px}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:48px;height:48px;display:grid;place-content:center;background:var(--blue);color:white;border-radius:16px;font:700 40px/1 "Trebuchet MS",sans-serif;position:relative}.brand-mark span{position:absolute;color:var(--yellow);right:7px;bottom:5px;font-size:30px}.brand strong{font-size:21px;letter-spacing:1px}.brand-en{display:block;font-size:12px;color:var(--muted);margin-top:4px;letter-spacing:.5px}.lesson{background:#fff;border:1px solid #dde5f5;border-radius:30px;padding:9px 17px;font-size:14px}.lesson b{color:var(--blue);font-size:22px;padding:0 3px}main{max-width:1060px;margin:25px auto 0;padding:0 24px}.lesson-heading{text-align:center;margin-bottom:30px}h1{font-size:clamp(25px,3vw,34px);margin:0 0 10px;letter-spacing:2px}.lesson-heading p{color:var(--muted);margin:0}.learning-card{background:white;border:1px solid #e1e8f6;border-radius:30px;box-shadow:0 14px 45px #2446770a;overflow:hidden}.card-top{display:flex;justify-content:space-between;padding:23px 30px;color:var(--muted);font-size:14px}#count{font-variant-numeric:tabular-nums}.activity{display:grid;grid-template-columns:1.3fr 1fr;gap:34px;align-items:center;padding:10px 38px 28px}.reading{text-align:center}.letters{display:flex;justify-content:center;gap:12px}.letter{display:flex;flex-direction:column;align-items:center;justify-content:center;width:112px;height:152px;border:0;border-radius:23px;background:#eaf1ff;color:var(--blue);font-family:"Trebuchet MS",sans-serif;font-size:108px;line-height:1.1;font-weight:700;padding:0 0 13px;box-shadow:0 5px 0 #d4e1fb}.letter.vowel{background:#fff0c4;color:#9c5800;box-shadow:0 5px 0 #f0d78c}.letter:after{content:"";display:block;width:7px;height:7px;background:currentColor;border-radius:100%;margin-top:5px}.letter.playing{background:var(--blue);color:#fff;box-shadow:0 5px 0 #173b9b}.letter.vowel.playing{background:var(--yellow);color:#663b00;box-shadow:0 5px 0 #d69c15}.hint{color:var(--muted);font-size:14px;margin:24px 0}.sound-actions{display:flex;gap:12px;justify-content:center}.sound-actions button{border-radius:15px;min-height:58px;padding:14px 23px;font-weight:650;display:flex;align-items:center;justify-content:center;gap:10px}.primary{background:var(--blue);color:white;border:2px solid var(--blue);box-shadow:0 4px 0 #1744b0}.primary:active{box-shadow:none;transform:translateY(2px)}.secondary{background:white;border:2px solid #dfe7f5;color:var(--ink)}.secondary svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.status{font-size:14px;min-height:21px;margin:15px 0 0;color:#566b90}.meaning{min-width:0;align-self:stretch;min-height:325px;border:2px dashed #dce5f4;border-radius:24px;overflow:hidden}.picture-cover{width:100%;height:100%;min-height:325px;border:0;background:#f9fbff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:15px;color:var(--ink)}.question{height:83px;width:83px;display:grid;place-content:center;border-radius:25px;background:#e9f0ff;color:#6d91df;font-size:54px;font-weight:700;transform:rotate(-7deg)}.picture-cover strong{font-size:21px;margin-top:6px}.reveal-label{font-size:14px;color:var(--muted)}.reveal-label span{padding-left:12px;color:var(--blue)}.picture{width:min(100%,275px);aspect-ratio:1;margin:0 auto;background-image:url('assets/pictures.png');background-size:200% 400%;background-repeat:no-repeat}.meaning-caption{display:flex;justify-content:center;align-items:center;gap:20px;padding:10px 15px 16px}.meaning-caption strong{font-size:22px}.meaning-caption button{border:0;background:#eef3ff;color:#48618a;border-radius:10px;min-height:42px;padding:8px 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22px;margin-top:12px}.parent-note a{color:var(--blue)}footer{text-align:center;font-size:12px;color:#7b89a0;padding:28px 16px 24px}footer span{margin:0 10px}[hidden]{display:none!important}@media(hover:hover){button:hover:not(:disabled){filter:brightness(.97)}}@media(max-width:760px){header{padding:20px}.brand-en{display:none}.lesson-label{display:none}main{margin:16px auto 0;padding:0 16px}.lesson-heading{margin-bottom:22px}.activity{grid-template-columns:1fr;gap:15px;padding:5px 20px 20px}.card-top{padding:18px 22px}.letters{gap:12px}.letter{width:95px;height:120px;font-size:85px;border-radius:18px}.hint{margin:21px 0 17px}.sound-actions button{min-height:54px;padding:12px 22px}.meaning{min-height:135px}.picture-cover{min-height:135px;display:grid;grid-template-columns:65px auto;grid-template-rows:1fr 1fr;column-gap:20px;row-gap:0;padding:22px;justify-content:center;text-align:left}.question{width:65px;height:65px;font-size:44px;grid-row:1/3}.picture-cover strong{align-self:end;font-size:18px;margin:0 0 4px}.reveal-label{align-self:start}.picture{width:215px}.status{margin:12px 0 0;min-height:20px}.card-bottom{padding:13px 16px}.encouragement{display:none}.word-list{gap:8px;margin:21px auto;max-width:360px}.word-choice{min-width:70px;min-height:49px}.learning-card{border-radius:24px}footer{padding-top:18px}}@media(max-width:360px){.letter{width:78px;font-size:75px}.sound-actions{gap:8px}.sound-actions button{padding:12px 14px}.brand strong{font-size:18px}.word-choice{min-width:62px}}

.day-planner{max-width:620px;margin:0 auto 24px}.day-controls{display:flex;align-items:center;justify-content:center;gap:14px}.day-picker{flex:1;min-width:0}.day-picker label{display:block;font-size:14px;color:var(--muted);margin-bottom:7px}.day-picker select{display:block;width:100%;min-height:50px;border:1px solid #cbd8ed;border-radius:13px;padding:10px 34px 10px 14px;background:white;color:var(--ink);font:inherit;font-size:16px;font-weight:600;line-height:1.4;cursor:pointer}.day-picker select:focus-visible{outline:3px solid var(--blue);outline-offset:3px}.day-arrow{border:1px solid #d6e1f3;background:white;color:var(--blue);width:48px;min-height:50px;border-radius:13px;align-self:end;font-size:22px}.day-planner p{text-align:center;margin:12px 0 0;font-size:14px;color:var(--muted)}.word-choice.review-word{border-style:dashed;border-width:2px}.word-choice.review-word[aria-current="true"]{border-color:#b6caf8}.review-key{text-align:center;font-size:12px;color:var(--muted);margin:-12px 0 17px}.word-note{font-size:14px;color:var(--muted);line-height:1.5;text-align:center;margin:0;padding:0 18px 15px}.lesson-heading{margin-bottom:23px}.word-list{max-width:620px}.word-choice{min-width:76px}@media(max-width:760px){.day-planner{margin-bottom:18px}.day-controls{gap:8px}.day-arrow{width:40px;flex-shrink:0}.day-picker select{font-size:14px;padding-left:10px}.day-picker label{font-size:12px}.word-list{max-width:360px}.word-choice{min-width:70px}.lesson-heading{margin-bottom:18px}.day-planner p{font-size:13px}}

.track-switch{display:flex;justify-content:center;gap:6px;margin:0 auto 20px;background:#e5edfc;border-radius:15px;padding:5px;width:max-content;max-width:100%}.track-switch button{border:0;background:transparent;border-radius:11px;padding:11px 22px;color:#49618b;font-weight:600;min-height:45px}.track-switch button[aria-pressed="true"]{color:#fff;background:var(--blue)}.picture{background-color:white}.letters.long-word{gap:7px}.letters.long-word .letter{flex:1;min-width:0;max-width:75px;height:120px;font-size:70px}.letter.letter-pair{font-size:66px}.lesson{max-width:230px;text-align:center}.word-choice{padding:8px 13px}@media(max-width:760px){.letters.long-word{gap:6px}.letters.long-word .letter{height:99px;font-size:52px;border-radius:14px}.letter.letter-pair{font-size:53px}.track-switch{margin-bottom:15px}.track-switch button{padding:10px 18px}.lesson{max-width:155px;font-size:12px}.word-choice{font-size:21px}}

/* Language controls share the header and wrap on smaller screens. */
header{gap:16px;flex-wrap:wrap}.header-tools{display:flex;align-items:center;justify-content:flex-end;gap:12px;flex-wrap:wrap}.language-switch{display:flex;padding:3px;border:1px solid #d9e1ed;border-radius:14px;background:#fff;gap:2px}.language-switch button{min-height:44px;padding:8px 12px;border:0;border-radius:10px;background:transparent;color:#526278;font-size:14px;font-weight:700;cursor:pointer}.language-switch button[aria-pressed="true"]{background:#285cdb;color:#fff}.language-switch button:focus-visible{outline:3px solid #efaa39;outline-offset:3px}.meaning-caption{gap:12px}.meaning-caption strong{min-width:0;overflow-wrap:break-word}.meaning-caption button{flex-shrink:0}html[lang="en"] .meaning-caption strong{font-size:20px}html[lang="en"] .nav-button{white-space:normal}html[lang="en"] .encouragement{max-width:180px;text-align:center}@media(max-width:600px){.header-tools{gap:8px}.language-switch button{padding:8px 10px}html[lang="en"] .card-bottom{gap:8px}html[lang="en"] .nav-button{font-size:14px}}