.learning-hero{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;padding:30px 0;border-bottom:1px solid var(--line)}.learning-hero h1{font-size:clamp(28px,3.4vw,43px);line-height:1.35;margin:12px 0}.learning-hero p{max-width:590px;font-size:14px;line-height:1.9}.learning-progress{min-width:185px;padding:22px;border:1px solid var(--line);background:var(--card);border-radius:16px}.learning-progress strong{font-size:42px;line-height:1.1;font-weight:500}.learning-progress small{color:var(--muted)}.course-progress-track{height:5px;background:var(--line);margin:16px 0;border-radius:5px;overflow:hidden}#courseProgressFill{height:100%;background:var(--purple);transition:width .25s}.learning-progress button{width:100%;margin-top:12px}
.learning-intro{margin:24px 0;border:1px solid var(--line);border-radius:14px;background:var(--card);padding:19px 24px}.learning-intro summary{font-size:17px;cursor:pointer;font-weight:600}.learning-intro p{margin:12px 0}.course-readiness{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}.course-readiness label{display:flex;gap:10px;font-size:13px;align-items:flex-start}.course-readiness input{flex:none}.course-layout{display:grid;grid-template-columns:minmax(260px,.9fr) minmax(0,1.1fr);gap:28px;align-items:start;margin-top:30px}.course-stage{margin-bottom:26px}.course-stage-head{display:flex;align-items:baseline;gap:10px;margin-bottom:13px}.course-stage-head b{font-size:12px;color:var(--purple);font-family:Georgia,serif}.course-stage-head h2{font-size:17px}.course-stage-head small{font-size:11px;color:var(--muted);margin-left:auto}.course-lesson{display:grid;grid-template-columns:30px 1fr 36px;gap:10px;width:100%;align-items:center;text-align:left;margin:7px 0;padding:13px 14px;border-radius:10px;background:var(--card);border:1px solid var(--line);color:var(--ink)}.course-lesson:hover{border-color:var(--purple)}.course-lesson[aria-pressed=true]{box-shadow:inset 3px 0 var(--purple);background:var(--soft);border-color:var(--purple)}.course-lesson[data-locked=true]{opacity:.65}.course-lesson strong{font-weight:500;font-size:13px;display:block}.course-lesson small{display:block;margin-top:3px;font-size:10px;color:var(--muted)}.course-lesson-index{font:20px Georgia,serif;color:var(--muted)}.course-lesson-mark{font-size:11px;color:var(--purple);text-align:right}.course-preview{background:var(--card);border:1px solid var(--line);padding:26px;border-radius:16px;position:sticky;top:20px;min-width:0}.course-preview h2{font-size:24px;margin:10px 0}.course-preview .course-goal{color:var(--ink);font-size:14px}.course-preview ol{padding-left:22px;line-height:1.9;font-size:13px}.course-preview li+li{margin-top:9px}.course-rule{font-size:12px;padding:12px 14px;border-left:2px solid var(--purple);background:var(--soft);line-height:1.9}.course-sample{font:14px/1.9 Consolas,'Microsoft YaHei',monospace;overflow-wrap:anywhere;letter-spacing:.5px;padding:14px;border:1px dashed var(--line);margin:17px 0;border-radius:8px;color:var(--muted)}.course-preview button.primary{margin-top:18px;width:100%}.course-note{font-size:11px!important;line-height:1.9}.course-finger-guide{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin:15px 0}.course-finger-guide div{border-bottom:3px solid var(--finger-color);padding:8px 4px;background:var(--bg);border-radius:4px;text-align:center}.course-finger-guide b{display:block;font-size:10px;font-weight:500}.course-finger-guide span{display:block;font:14px Consolas,monospace;margin-top:5px}.learning-references{font-size:11px;line-height:1.9;margin:30px 0}.learning-references a{color:var(--purple);text-decoration:underline;text-underline-offset:3px}
.learn-entry{display:flex;align-items:center;gap:18px;border:1px solid var(--line);border-left:3px solid var(--purple);background:var(--card);padding:15px 19px;margin-bottom:22px;border-radius:9px}.learn-entry>span{font-size:11px;letter-spacing:.12em;color:var(--purple)}.learn-entry strong{font-size:14px;font-weight:500}.learn-entry p{font-size:11px;margin:2px 0 0}.learn-entry button{margin-left:auto;white-space:nowrap}.practice-coach{padding:22px;background:var(--card);border:1px solid var(--line);border-radius:13px;margin-bottom:20px}.coach-top{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.coach-top h2{margin:6px 0;font-size:19px}.coach-top p{font-size:12px;line-height:1.8;max-width:720px}.coach-top button{font-size:12px;white-space:nowrap}.coach-keyline{display:flex;align-items:center;gap:16px;margin-top:18px;padding-top:15px;border-top:1px solid var(--line)}#coachNextKey{display:grid;place-items:center;min-width:52px;height:48px;font:26px Consolas,monospace;border:1px solid var(--line);border-bottom-width:4px;border-radius:8px;color:var(--purple);background:var(--bg);padding:0 10px}#coachFinger{font-size:14px;font-weight:500}#coachShift{font-size:11px}.coach-extra{margin-top:13px;font-size:12px}.coach-extra summary{cursor:pointer;color:var(--purple)}.coach-extra ol{padding-left:20px}.coach-extra p{font-size:12px}.course-feedback{padding:15px;background:var(--soft);border-radius:10px;line-height:1.9;margin-top:15px;font-size:13px}
.key[data-finger]{--finger-color:var(--line)}body[data-practice-kind=keys] .key[data-finger],body[data-practice-kind=en] .key[data-finger]{border-bottom:3px solid var(--finger-color)}.key.next{box-shadow:0 0 0 2px var(--purple)}.finger-legend{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;font-size:10px;margin:14px 0 4px}.finger-legend span{padding:2px 6px;border-bottom:2px solid var(--finger-color);border-radius:3px;opacity:.6}.finger-legend span[data-active=true]{opacity:1;background:var(--soft);font-weight:600}.key.home:after{content:'';display:block;width:10px;border-bottom:1px solid currentColor;margin:0 auto}.keyboard-note [data-coach-shift]{color:var(--purple)}body[data-practice-kind=keys] #textDisplay,body[data-practice-kind=en] #textDisplay{font-family:Consolas,'Courier New',monospace;letter-spacing:.8px}body[data-practice-kind=keys] #textInput,body[data-practice-kind=en] #textInput{font-family:Consolas,'Courier New',monospace;letter-spacing:.8px}
body[data-theme=inkstorm] .learning-intro,body[data-theme=inkstorm] .course-preview,body[data-theme=inkstorm] .course-lesson,body[data-theme=inkstorm] .practice-coach,body[data-theme=inkstorm] .learning-progress,body[data-theme=inkstorm] .learn-entry{border-radius:3px;background:rgba(250,246,234,.88);border-color:rgba(25,27,23,.2)}body[data-theme=inkstorm] .course-lesson[aria-pressed=true]{background:rgba(228,217,190,.93)}body[data-theme=inkstorm] .learning-hero h1{font-size:48px}body[data-theme=inkstorm] .learning-hero p,body[data-theme=inkstorm] .course-preview li{font-size:17px}body[data-theme=night] .course-preview,body[data-theme=night] .learning-intro,body[data-theme=night] .practice-coach{background:var(--card)}
@media(max-width:1000px){header nav{gap:18px}.course-layout{gap:18px;grid-template-columns:minmax(230px,.9fr) minmax(0,1.1fr)}.course-preview{padding:20px}.course-finger-guide{grid-template-columns:repeat(2,1fr)}}@media(max-width:700px){header nav{overflow-x:auto;gap:14px}.nav{white-space:nowrap;font-size:12px}.learning-hero{grid-template-columns:1fr;gap:20px;padding-top:10px}.learning-progress{min-width:0}.learning-progress strong{font-size:32px}.course-readiness{grid-template-columns:1fr}.course-layout{display:flex;flex-direction:column-reverse}.course-preview{position:static;width:100%}#courseList{width:100%}.course-stage-head small{display:none}.learn-entry{flex-wrap:wrap;gap:10px}.learn-entry>span{display:none}.learn-entry button{font-size:11px}.practice-coach{padding:16px}.coach-top{flex-wrap:wrap}.coach-keyline{gap:12px}.tabs button{padding:8px 11px}.tabs button span{display:none}.keyboard-card{overflow:hidden}#keyboard .key{min-width:19px;padding:0;width:6vw;height:30px;font-size:10px}#keyboard .key.space{width:130px}.finger-legend{gap:5px}.finger-legend span{padding:2px;font-size:9px}}