:root{--blue:#2948bb;--ink:#182342;--muted:#65708a;--line:#e2e7f0;--bg:#f5f7fc}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;background:#fff;color:var(--ink);border:1px solid var(--line);padding:10px 17px;border-radius:9px}button:hover{border-color:var(--blue);color:var(--blue)}button:disabled{opacity:.5;cursor:wait}button.primary,.primary{background:var(--blue);color:#fff;border-color:var(--blue)}a.primary{display:inline-block;padding:11px 20px;border-radius:9px}.text{border:0;background:transparent;color:var(--blue)}:focus-visible{outline:3px solid #9eb6ff;outline-offset:3px}header{background:#fff;border-bottom:1px solid var(--line);padding:18px max(24px,calc((100vw - 1240px)/2));display:flex;align-items:center;gap:24px;position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:12px;font-weight:650;line-height:1.3;white-space:nowrap}.brand small{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:4px}.logo{display:grid;place-items:center;background:var(--blue);color:white;width:42px;height:42px;border-radius:11px;font-size:23px}nav{display:flex;gap:24px;margin:auto;white-space:nowrap;font-size:14px}nav a{padding:7px 0;position:relative;color:var(--muted)}nav a.active{color:var(--blue);font-weight:650}nav a.active:after{content:'';height:3px;position:absolute;bottom:-19px;left:0;right:0;background:var(--blue)}main{max-width:1180px;min-height:calc(100vh - 170px);margin:auto;padding:42px 24px 70px}h1,h2,h3,p{margin-top:0}h1{font-size:32px;letter-spacing:-1px;line-height:1.35;margin-bottom:12px}h2{font-size:21px;line-height:1.4}h3{font-size:17px;margin-bottom:8px}.muted{color:var(--muted);font-size:14px}.eyebrow{font-size:12px;font-weight:650;letter-spacing:2px;color:var(--blue);margin-bottom:14px}.pagehead{margin-bottom:30px}.between{display:flex;align-items:center;justify-content:space-between;gap:16px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.two{display:grid;grid-template-columns:1fr 1fr;gap:24px}.panel,.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:25px}.hero{padding:36px 0 40px;max-width:820px}.hero h1{font-size:48px;line-height:1.35}.hero p{color:var(--muted);font-size:17px}.entry{padding:32px;position:relative;overflow:hidden;min-height:240px}.entry.dark{background:#203b98;color:#fff;border:0}.entry.dark .muted{color:#c7d4ff}.entry h2{font-size:26px;margin-top:24px}.entry .icon{font-size:30px;color:var(--blue)}.entry.dark .icon{color:#fff}.entry a{margin-top:15px}.entry .outline{border:1px solid #ffffff60;background:#ffffff15}.sectiontitle{margin:36px 0 18px}.symbol{display:flex;align-items:center;gap:17px;margin-bottom:18px}.symbol img,.glyph{width:82px;height:82px;object-fit:contain;border-radius:12px;background:#f4f6fc}.glyph{display:grid;place-items:center;font-family:Georgia,serif;font-size:35px;color:#203b98}.symbol h3{font-size:20px;margin:0}.symbol .muted{margin:3px 0}.tag{font-size:12px;color:var(--blue);background:#eef2ff;border-radius:5px;padding:3px 8px;display:inline-block}.card p{font-size:14px}.example{border-left:2px solid #c8d3f6;padding-left:12px;color:var(--muted)}.card .actions{display:flex;gap:8px;border-top:1px solid var(--line);padding-top:16px;margin-top:20px}.actions button{font-size:14px;flex:1}.searchbox{display:flex;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;gap:10px;margin:24px 0 18px;box-shadow:0 8px 30px #24366c05}.searchbox input{border:0;min-width:0;flex:1;padding:8px 12px;outline:none;background:transparent}.chips{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:22px}.chips button{font-size:14px;padding:7px 16px;border-radius:8px}.chips .active{background:#e8edff;color:var(--blue);border-color:#b7c7ff}.empty{text-align:center;padding:35px;color:var(--muted);background:#fff;border:1px dashed #cbd4e8;border-radius:12px;margin-bottom:24px}.category{cursor:pointer}.category .glyph{margin-bottom:20px}.notice{background:#edf2ff;border:1px solid #d9e3ff;color:#405b99;padding:12px 17px;border-radius:9px;font-size:14px;margin-bottom:22px}.steps{display:flex;gap:28px;margin-bottom:25px;color:var(--muted);font-size:14px}.steps b{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#e8edff;color:var(--blue);margin-right:8px}.practice{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:24px;align-items:start}label{display:block;font-size:14px;font-weight:550;margin:18px 0 8px}input,textarea,select{width:100%;padding:12px 14px;border:1px solid #dce2ee;border-radius:9px;color:var(--ink);background:#fff}textarea{min-height:190px;resize:vertical;line-height:1.8;font-size:16px}input:focus,textarea:focus,select:focus{outline:2px solid #cbd7ff;border-color:var(--blue)}.recordzone{padding:27px 16px;background:#f7f9fe;border:1px dashed #d1daf0;border-radius:12px;text-align:center;margin-top:22px}.recordzone button{border-radius:50px}.recordzone .timer{font-size:28px;font-variant-numeric:tabular-nums;margin:12px 0;color:#344977}.recordzone audio{width:100%;margin-top:15px}.recording{background:#bd334b!important;border-color:#bd334b!important;color:white!important}.report-block{border-bottom:1px solid var(--line);padding:16px 0}.report-block:last-child{border:0}.report-block h3{color:var(--blue)}.annotation{margin:12px 0;background:#f6f8fd;border-radius:8px;padding:13px;font-size:14px}.annotation p{margin-bottom:8px;white-space:pre-wrap;overflow-wrap:anywhere}.quote{color:#233d83}.rewrite{white-space:pre-wrap;overflow-wrap:anywhere}.report-empty{padding:50px 15px;text-align:center}.report-empty .icon{font-size:42px;color:#a5b3d3}.history{margin-top:18px}.history summary{cursor:pointer;font-weight:600;overflow-wrap:anywhere}.history details{padding:20px;background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px}.history pre{white-space:pre-wrap;font-family:inherit;font-size:14px;overflow-wrap:anywhere}.history audio{width:100%}dialog{width:430px;max-width:calc(100vw - 32px);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:0 20px 100px #12214730}dialog::backdrop{background:#111e4260}dialog h2{margin:0}dialog button.primary{width:100%}#authError{color:#b12b43;font-size:14px}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#172649;color:#fff;padding:12px 22px;border-radius:10px;z-index:30;display:none;max-width:90vw;font-size:14px}footer{border-top:1px solid var(--line);padding:22px 30px;display:flex;justify-content:space-between;color:var(--muted);font-size:12px}#serviceStatus{margin-top:15px}.practice .panel{margin-bottom:20px}.row{display:flex;gap:10px;flex-wrap:wrap}.row button{flex:1}#saveStatus{font-size:14px;color:var(--muted);margin-top:10px}#recordStatus{min-height:24px}.count{font-size:12px;color:var(--muted);text-align:right;margin-bottom:0}@media(max-width:1000px){header{flex-wrap:wrap;padding:15px 24px;gap:12px}nav{order:3;width:100%;justify-content:space-between;margin:0;gap:14px;overflow:auto}nav a.active:after{bottom:0}header>#account{margin-left:auto}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){main{padding:28px 18px 48px}header{position:relative;padding:14px 18px}.brand{font-size:14px}nav{font-size:13px}header>#account{font-size:12px;padding:8px 10px}.hero{padding:15px 0 25px}.hero h1{font-size:34px}.hero p{font-size:15px}.two,.grid,.practice{grid-template-columns:1fr}.entry{min-height:210px;padding:26px}.panel,.card{padding:20px}h1{font-size:28px}.steps{gap:10px;font-size:12px}.steps b{margin-right:4px}.between{align-items:flex-start}footer{display:block;padding:20px}footer span{display:block}.searchbox button{padding:8px 15px}.category{display:flex;align-items:center;gap:18px}.category .glyph{margin:0}.category h2{margin-bottom:4px}.category p{margin:0}.row button{min-width:120px}}
.preparation{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}.prep-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.prep-controls label{margin:0}.prep-controls select{width:95px}.prep-countdown{padding:14px;margin-top:16px;background:#edf2ff;border-radius:10px;font-size:23px;font-variant-numeric:tabular-nums;color:var(--blue)}.reading-toolbar{padding:12px 0;display:flex;flex-wrap:wrap;gap:10px;border-bottom:1px solid var(--line)}.reading-toolbar button{font-size:13px;padding:7px 10px}.reading-toolbar button[aria-pressed=true]{background:#e9efff;border-color:#bccafb;color:var(--blue)}#sourceReader{line-height:2.3;padding:24px 0;max-height:560px;overflow:auto;overflow-wrap:anywhere;user-select:text;-webkit-user-select:text}#sourceReader mark{background:#fff0a7;border-radius:3px}#sourceReader u{text-decoration-color:#4664b5;text-underline-offset:5px}.pipeline-status{margin-top:20px;padding:18px;border:1px solid #d8e3ff;background:#f0f4ff;border-radius:12px}.pipeline-status p{font-size:14px;margin-bottom:8px}.pipeline-status.failed{background:#fff7f5;border-color:#edd4ce}.pipeline-status .row{margin-top:16px}#waveform{width:100%;height:65px;display:block;margin:12px 0}#pauseRecord{margin-left:12px}#source[hidden],#sourceCount[hidden],#prepCountdown[hidden]{display:none}@media(max-width:640px){.prep-controls button{flex:1}.reading-toolbar .row{gap:5px}.reading-toolbar button{font-size:12px}#sourceReader{max-height:480px}.prep-controls select{width:90px}}

/* 三个独立练习页面 */
.wizard{max-width:880px;margin:0 auto}.practice-stepnav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:0 0 28px;overflow:visible}.practice-stepnav button{display:flex;align-items:center;justify-content:center;gap:10px;padding:14px 10px;background:#fff;color:var(--muted)}.practice-stepnav b{width:27px;height:27px;display:grid;place-items:center;border-radius:50%;background:#edf0f6;font-size:14px}.practice-stepnav button[aria-current=step]{border-color:var(--blue);background:#edf2ff;color:var(--blue);font-weight:650}.practice-stepnav button[aria-current=step] b{background:var(--blue);color:white}.wizard-panel{padding:30px}.wizard-panel textarea{min-height:250px}.wizard-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}.wizard-actions a{font-size:14px;color:var(--muted)}.wizard-panel #sourceReader{max-height:55vh}.wizard-panel .recordzone{margin-top:8px}.wizard .pagehead{margin-bottom:22px}.wizard #report:empty{display:none}@media(max-width:640px){.wizard-panel{padding:20px}.practice-stepnav{gap:6px;margin-bottom:20px}.practice-stepnav button{flex-direction:column;gap:5px;padding:10px 4px;font-size:13px}.wizard-panel textarea{min-height:230px}.wizard-actions button{flex:1;min-width:135px}.wizard-panel #sourceReader{max-height:45vh}.wizard .reading-toolbar button{min-width:0}}