:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#173d35;background:#f5f3eb;font-synthesis:none;--green:#235849;--muted:#66756c;--border:#d9ded3}
.matching-character{text-decoration:underline;text-underline-offset:.2em}
.review-character button.review-hanzi{display:block;background:transparent;color:var(--green);padding:0 8px;font-size:40px;font-weight:400;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:6px}.review-character>.text-button{display:block;margin-bottom:12px;text-align:left}.review-character li button{font-size:17px;text-align:left}
.review-tone{border-top:1px solid var(--border);margin-top:24px;padding-top:18px}.review-tone h2{font-size:16px}.review-characters{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.review-character{border:1px solid var(--border);border-radius:12px;padding:16px;min-width:0}.review-hanzi{font-size:40px;margin:0 0 12px}.review-character summary{cursor:pointer;font-size:12px;color:var(--green)}.review-character ul{padding-left:18px;font-size:13px;overflow-wrap:anywhere}.review-character li{margin-top:12px}.review-character li span{display:block;margin-top:4px}#review h1{margin-top:24px}#review-pinyin{min-width:140px}
.sound-settings{margin:-30px 0 24px}.sound-settings label{display:flex;align-items:center;gap:10px;font-weight:400}.sound-settings input{width:auto;accent-color:var(--green)}#speech-status:empty{display:none}#replay{margin:0 10px 12px 0}@media(max-width:550px){.sound-settings{margin:0 0 24px}}
.answer-detail{margin-top:20px;padding-top:18px;border-top:1px solid #173d3526;overflow-wrap:anywhere}.answer-detail h2{font-size:13px;margin:0 0 10px}.sentence-chinese{font-size:20px}.word-breakdown{margin:0}.word-breakdown>div{display:grid;grid-template-columns:minmax(60px,1fr) minmax(0,3fr);gap:16px;padding:8px 0}.word-breakdown dt{font-size:20px}.word-breakdown dd{margin:0;color:#536156}
*{box-sizing:border-box}body{margin:0}main{max-width:790px;margin:auto;padding:38px 24px}header{display:flex;align-items:center;justify-content:space-between;margin-bottom:60px;gap:20px}.brand{color:inherit;text-decoration:none;font-size:26px;font-weight:700;display:flex;align-items:center;gap:14px}.brand span{font-size:12px;letter-spacing:2px}.tag{font-size:12px;color:var(--muted)}.card{background:#fffef9;border:1px solid var(--border);border-radius:24px;padding:48px;box-shadow:0 12px 45px #173d3506}.eyebrow{font-size:11px;font-weight:700;letter-spacing:2px;color:#607957;margin:0 0 20px}h1{font-family:Georgia,serif;font-size:48px;font-weight:400;line-height:1.1;margin:0 0 20px;letter-spacing:-1.5px}.intro{color:var(--muted);font-size:17px;line-height:1.7;max-width:470px;margin-bottom:34px}label{display:block;font-size:13px;font-weight:650;margin-bottom:10px}.setting{display:flex;align-items:center;gap:16px}.setting span{font-size:13px;color:var(--muted)}select,input{font:inherit;border:1px solid #b9c8bc;border-radius:10px;background:white;color:inherit;padding:13px}select{min-width:85px}input{width:100%;font-size:20px}button{font:inherit;font-weight:600;font-size:14px;cursor:pointer;padding:15px 22px;border-radius:10px;border:1px solid transparent;background:var(--green);color:white}button:hover{filter:brightness(.92)}button:disabled{opacity:.5;cursor:default}button span{margin-left:24px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #b68a35;outline-offset:4px}#word-count,.muted{font-size:12px;color:var(--muted);line-height:1.6}#word-count{margin:14px 0 24px}.guide{border-top:1px solid var(--border);margin-top:32px;padding-top:24px}.guide h2{font-size:13px;margin:0 0 18px}.guide p{display:flex;align-items:center;gap:24px;font-size:16px}.guide p>span:first-child{font-size:27px}.guide i{font-size:12px;color:var(--muted);font-style:normal;margin:0 6px}small{display:block;color:var(--muted);font-size:12px;line-height:1.8}footer{text-align:center;color:#7c887d;font-size:10px;letter-spacing:2px;margin:30px 0}.toolbar{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}.text-button{padding:8px 0;background:none;color:var(--green);font-size:12px}progress{width:100%;height:5px;margin:18px 0 38px;accent-color:var(--green)}.prompt-label{text-align:center}#word{text-align:center;font-family:system-ui,sans-serif;font-size:clamp(36px,8vw,70px);letter-spacing:4px;overflow-wrap:anywhere;margin:30px 0 44px}.actions{display:flex;gap:12px;margin-top:20px}.secondary{background:transparent;border-color:var(--border);color:var(--green)}#feedback:not(:empty){border-radius:12px;padding:20px;background:#edf2e7;margin:24px 0 16px;line-height:1.6}#feedback.incorrect{background:#fbefe0}#feedback p{margin:8px 0 0}#feedback .translation{color:#536156}#feedback strong{font-size:16px}.score{font-size:12px;text-align:center;color:var(--muted);margin:28px 0 0}[hidden]{display:none!important}@media(max-width:550px){main{padding:22px 16px}header{margin-bottom:28px}.tag{display:none}.card{padding:30px 22px}h1{font-size:40px}.guide p{gap:14px;font-size:14px}.actions button{flex:1;padding:14px 10px}}