@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=DM+Mono:wght@400;500&display=swap');
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header{gap:18px}.site-language{display:flex;align-items:center;gap:8px;margin-left:auto;color:var(--muted);font-size:10px}.site-language select{border:1px solid var(--line);border-radius:6px;padding:9px 11px;background:white;color:var(--green);font:11px system-ui,sans-serif;max-width:150px}.site-language+button{white-space:nowrap}.nav-label{flex-shrink:1}.language-tabs button{white-space:normal}.original-note{max-width:45%;text-align:right}.question-controls label{white-space:normal}.metrics small{min-height:16px}.sound-panel .switch-options small{line-height:1.5}.last-record .record-stat strong{font-size:22px}.site-language:focus-within select{outline:2px solid #a4bba4;outline-offset:2px}@media(max-width:760px){header{padding:17px 18px;gap:12px;flex-wrap:wrap}.site-language{gap:6px}.site-language>span{display:none}.site-language select{max-width:127px;font-size:10px}.site-language+button{font-size:10px;padding-right:0}.heading h1{font-size:25px}.year-tabs button{font-size:12px}.year-tabs small{font-size:8px}.sound-bar>span{line-height:1.8}.language-tabs button{white-space:normal}.scene-tabs button{white-space:normal;text-align:left}.metrics small{font-size:9px;line-height:1.6;min-height:28px}.question-controls #questionSelect{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}}
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.hanzi-pinyin{padding:25px 0 7px;display:flex;flex-wrap:wrap;gap:12px 5px;align-items:baseline;line-height:2.8;max-height:330px;overflow:auto}.hanzi-pinyin ruby{display:inline-flex;flex-direction:column;align-items:center;font:500 28px/1.5 'Noto Sans SC',sans-serif;min-width:34px;padding:0 2px}.hanzi-pinyin ruby>span{display:block}.hanzi-pinyin rt{display:block;font:400 12px/1.8 system-ui,sans-serif;color:#9b7943;min-height:22px;text-align:center;letter-spacing:.2px}.hanzi-punctuation{font:24px/1.5 'Noto Sans SC',sans-serif;align-self:flex-start;margin-top:3px}.pinyin-help{font-size:10px;line-height:1.8;color:var(--muted);margin:9px 0 0}.hanzi-pinyin:not([hidden])~.target{padding:14px 0 23px;min-height:65px;max-height:220px;font-size:21px;line-height:1.9}.target[lang=zh-Latn]{font-family:'DM Mono',monospace;letter-spacing:0;font-size:21px}@media(max-width:760px){.hanzi-pinyin{padding-top:18px;max-height:260px;gap:10px 3px}.hanzi-pinyin ruby{font-size:25px;min-width:30px}.hanzi-pinyin rt{font-size:11px}.hanzi-pinyin:not([hidden])~.target{font-size:19px}.pinyin-help{font-size:9px}}
.narration-status{display:block;font-size:10px;color:var(--muted);line-height:1.8;margin-top:8px;min-height:0}.narration-status:empty{display:none}.listen[aria-pressed=true]{background:#e5efdc;border-color:#a8bea0}.sound-bar #soundOptions{white-space:normal;text-align:left}
.heading>div:first-child{flex:1;min-width:0}.language-pair{width:420px;flex-shrink:0;border:1px solid var(--line);border-radius:12px;background:white;padding:18px}.pair-selectors{display:grid;grid-template-columns:minmax(0,1fr) 36px minmax(0,1fr);gap:10px;align-items:end}.pair-selectors label{min-width:0}.pair-selectors label>span{display:block;color:var(--muted);font-size:10px;margin-bottom:8px}.pair-selectors select{display:block;width:100%;border:1px solid #d2ddc9;border-radius:7px;background:#f7f9f2;color:var(--green);padding:11px 9px;font:500 12px system-ui,sans-serif;min-width:0}.swap-languages{border:1px solid var(--line);border-radius:50%;width:36px;height:36px;background:#eef3e7;color:var(--green);font-size:22px;margin-bottom:3px;padding:0}.swap-languages:hover{background:#dce8d0}.language-pair>p{font-size:10px;color:var(--muted);margin:11px 0 0;line-height:1.7}.listen-source{border:0;background:transparent;font-size:10px;color:var(--green);padding:9px 0 0;text-align:left}.listen-source[aria-pressed=true]{font-weight:600}.translation #translation{overflow-wrap:anywhere}.heading h1{font-size:29px;line-height:1.55}.lesson #vocab>div{flex-direction:column;gap:5px}.lesson #vocab span{max-width:100%;font-size:10px}.lesson #vocab b{font-size:12px;line-height:1.8}@media(max-width:1000px){.heading{flex-direction:column;align-items:stretch}.language-pair{width:100%;max-width:550px}.heading h1{font-size:29px}}@media(max-width:760px){.language-pair{padding:16px;max-width:none}.pair-selectors{grid-template-columns:minmax(0,1fr) 32px minmax(0,1fr);gap:7px}.pair-selectors select{font-size:11px;padding:10px 7px}.swap-languages{width:32px;height:32px;font-size:20px}.heading h1{font-size:25px}.language-pair>p{font-size:9px}}

/* A bounded selector for all twenty switch palettes. */
.sound-panel{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);width:570px;max-width:calc(100vw - 32px);max-height:calc(100dvh - 32px);overflow-y:auto;padding:20px;box-shadow:0 18px 90px #153d3550;overscroll-behavior:contain}
.switch-options{max-height:min(38dvh,320px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;padding:3px;gap:7px;scrollbar-color:#a9bba4 #f1f4ec}
.switch-options label{min-width:0;min-height:64px;padding:10px 11px;gap:10px}.switch-options label>span{min-width:0}.switch-options small{font-size:10px;line-height:1.4;overflow-wrap:anywhere}.switch-options b{font-size:12px;line-height:1.5}.switch-options i{border:1px solid #153d3520}
.sound-settings{display:grid;grid-template-columns:1fr 1fr;gap:4px 14px;margin-top:12px;padding-top:8px}.sound-bar .sound-settings label{margin:5px 0;font-size:11px}.sound-settings .volume-row{grid-column:1/-1;grid-row:2}.sound-settings input[type=range]{width:min(310px,70%)}
.sound-panel p.sound-reference{font-size:9px;line-height:1.5;margin:10px 0 0;text-align:center}.sound-panel .synth-note{margin-top:5px;min-height:14px}.preview-sounds{margin-top:8px}
@media(max-width:420px){.sound-panel{padding:16px}.switch-options label{padding:9px 7px;gap:7px}.switch-options b{font-size:11px}.switch-options i{width:16px;height:19px}.switch-options small{font-size:9px}.sound-settings{gap:4px 8px}.sound-bar .sound-settings label{font-size:10px}}
.switch-options label{position:relative}.switch-options input{left:12px;top:50%;margin:0}