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ease}.player-shot.is-on{opacity:1}.player-spot{position:absolute;border-radius:var(--g-radius-lg);box-shadow:0 0 0 calc(2px / var(--zoom, 1)) var(--g-accent),0 0 0 200vmax #06070999;transition:left .65s var(--ease),top .65s var(--ease),width .65s var(--ease),height .65s var(--ease),opacity .4s ease;pointer-events:none}.player-pointer{position:absolute;z-index:2;margin:-3px 0 0 -4px;transition:left .7s var(--ease),top .7s var(--ease),opacity .3s ease;pointer-events:none}.player-pointer svg{filter:drop-shadow(0 2px 3px rgba(0,0,0,.45));transform:scale(calc(1 / var(--zoom, 1)));transform-origin:4px 3px}.player-pointer:after{content:"";position:absolute;top:2px;left:3px;width:30px;height:30px;margin:-15px 0 0 -15px;border:2px solid #fff;border-radius:50%;opacity:0}.player-pointer.is-clicking:after{animation:click .6s ease-out}@keyframes click{0%{opacity:.9;transform:scale(.3)}to{opacity:0;transform:scale(1.3)}}.player-caption{position:absolute;z-index:3;display:grid;gap:4px;width:min(340px,42%);padding:14px 16px 15px;border:1px solid var(--g-line-strong);border-radius:var(--g-radius-lg);background:#1c1d22f5;box-shadow:var(--g-shadow-pop);font-size:14px;line-height:1.45;transition:left .65s var(--ease),top .65s var(--ease);pointer-events:none}.player-n{color:var(--text-3);font-size:12px;font-weight:600}.player-caption strong{font-size:16px;font-weight:600}.player-says{color:var(--text-2)}.player-bar{display:flex;align-items:flex-start;gap:20px;margin-top:18px}.player-controls{display:flex;gap:6px}.player-btn{display:grid;place-items:center;width:38px;height:38px;padding:0;border:0;border-radius:var(--g-radius);background:var(--g-surface-2);color:var(--text);cursor:pointer}.player-btn:hover{background:var(--g-surface-3)}.player-play{background:var(--g-accent);color:var(--g-accent-ink)}.player-play:hover{background:var(--g-accent-hover)}.player-play .i:last-child,.player.is-playing .player-play .i:first-child{display:none}.player.is-playing .player-play .i:last-child{display:block}.player-steps{display:grid;flex:1;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;gap:8px;margin:0;padding:0;list-style:none}.player-steps button{display:grid;gap:9px;width:100%;padding:8px 0 0;border:0;background:none;color:var(--text-3);font:500 13px/1.3 var(--g-font-ui);text-align:left;cursor:pointer}.player-steps button:hover,.player-steps button[aria-current=step],.player-steps button.is-past{color:var(--text)}.player-meter{display:block;height:3px;overflow:hidden;border-radius:2px;background:var(--line-2)}.player-meter i{display:block;width:0;height:100%;background:var(--text-2)}.player-steps button.is-past .player-meter i,.player-steps button[aria-current=step] .player-meter i{width:100%}.player-steps button[aria-current=step] .player-meter i{background:var(--g-accent)}.player.is-ticking .player-steps button[aria-current=step] .player-meter i{animation:meter var(--d, 5s) linear forwards}.player-step-name{display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:clamp(28px,2.4vw,44px) 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8px;font-size:19px;font-weight:600;letter-spacing:-.01em;line-height:1.3}.card-summary{color:var(--text-2);font-size:15px;line-height:1.5}.card-facts{margin-top:auto;padding-top:14px;color:var(--text-3);font-size:13px}.start{border-top:1px solid var(--line)}.keys-band{border-top:1px solid var(--line);background:var(--room-2)}.kb-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;margin-bottom:24px}.kb-tip{color:var(--text-3);font-size:14px}.kb-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,340px);gap:clamp(20px,2.4vw,48px);align-items:stretch}.kb-keys{display:grid;gap:clamp(5px,.5vw,9px);padding:clamp(12px,1.4vw,24px);border:1px solid var(--line-2);border-radius:var(--g-radius-lg);background:var(--panel)}.kb-row{display:grid;grid-template-columns:repeat(13,minmax(0,1fr));gap:clamp(5px,.5vw,9px)}.kb-row-1{padding-left:3.6%}.kb-row-2{padding-left:6.4%}.kb-row-3{padding-left:9.2%}.kb-row-1 .kb-key:first-child{grid-column:1}.kb-key{position:relative;display:grid;place-items:center;aspect-ratio:1;padding:0;border:1px solid var(--line-2);border-bottom-width:3px;border-radius:var(--g-radius);background:var(--room-2);color:var(--text-3);font:500 clamp(11px,.85vw,15px) var(--g-font-ui);cursor:pointer;transition:background-color .15s ease,border-color .15s ease,transform .08s ease}.kb-cap{position:absolute;top:6%;left:10%;font-size:clamp(9px,.7vw,12px)}.kb-on{display:none;color:var(--text)}.kb-on svg{width:clamp(16px,1.5vw,26px);height:clamp(16px,1.5vw,26px)}.kb-word{display:block;padding:0 4px;font-size:clamp(8px,.6vw,11px);line-height:1.1;text-align:center}.kb[data-layer=plain] .kb-key[data-layers~=plain],.kb[data-layer=shift] .kb-key[data-layers~=shift],.kb[data-layer=ctrl] .kb-key[data-layers~=ctrl]{border-color:var(--g-line-strong);background:var(--g-surface-2);color:var(--text-2)}.kb[data-layer=plain] .kb-key[data-layers~=plain] .kb-plain,.kb[data-layer=shift] .kb-key[data-layers~=shift] .kb-shift,.kb[data-layer=ctrl] .kb-key[data-layers~=ctrl] .kb-ctrl{display:block}.kb-key:hover,.kb-key.is-shown{border-color:var(--g-accent)}.kb-key.is-pressed{border-bottom-width:1px;background:var(--g-accent);color:var(--g-accent-ink);transform:translateY(2px)}.kb-key.is-pressed .kb-on{color:var(--g-accent-ink)}.kb-row-4{grid-template-columns:2.2fr 1.6fr 8fr;padding-right:22%}.kb-mod,.kb-space{display:grid;place-items:center;height:clamp(30px,3.4vw,60px);border:1px solid var(--line-2);border-bottom-width:3px;border-radius:var(--g-radius);background:var(--room-2);color:var(--text-3);font-size:clamp(10px,.8vw,13px)}.kb[data-layer=shift] .kb-mod[data-mod=shift],.kb[data-layer=ctrl] .kb-mod[data-mod=ctrl]{border-color:var(--g-accent);color:var(--text)}.kb-detail{display:flex;flex-direction:column;gap:8px;padding:clamp(20px,2vw,32px);border:1px solid var(--line-2);border-radius:var(--g-radius-lg);background:var(--panel)}.kb-detail-icon svg{width:40px;height:40px;margin-bottom:8px;color:var(--text)}.kb-detail-keys{display:flex;gap:4px}.kb-detail-name{margin-top:8px;font-size:clamp(20px,1.5vw,26px);font-weight:600;letter-spacing:-.015em}.kb-detail-group{color:var(--text-3);font-size:13px}.kb-detail-about{margin-top:6px;color:var(--text-2);font-size:15px}.practise{border-top:1px solid var(--line)}.practise-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1fr);align-items:center;gap:clamp(40px,6vw,140px)}.opening{justify-self:center;width:100%;max-width:520px;overflow:hidden;border:16px solid #17181b;border-bottom-width:22px;border-radius:50% 50% 0 0/40% 40% 0 0;background:var(--room)}.opening img{width:100%;aspect-ratio:4 / 5;object-fit:cover}.practise-copy .h2{margin-bottom:24px}.practise-copy .lede{max-width:32em;margin-bottom:40px}.faq{border-top:1px solid var(--line)}.faq-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(40px,5vw,120px)}.faq-grid header .h2{margin-bottom:28px}.questions{border-top:1px solid var(--line-2)}.question{border-bottom:1px solid var(--line-2)}.question summary{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px 0;font-size:clamp(17px,1.15vw,21px);font-weight:500;list-style:none;cursor:pointer}.question summary::-webkit-details-marker{display:none}.question summary:after{content:"";flex:none;width:10px;height:10px;margin-right:4px;border-right:1.6px solid var(--text-3);border-bottom:1.6px solid var(--text-3);transform:translateY(-3px) rotate(45deg);transition:transform .25s var(--ease)}.question[open] summary:after{transform:translateY(2px) rotate(225deg)}.answer{display:grid;gap:14px;justify-items:start;padding-bottom:28px}.answer p{max-width:44em;color:var(--text-2)}.foot{border-top:1px solid var(--line);background:var(--room-2)}.foot-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:48px;width:min(var(--measure),100% - 2 * 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b{color:var(--text)}.chapter-nav{display:flex;flex-wrap:wrap;gap:8px;margin-top:clamp(32px,3vw,56px)}.chapter-nav a{display:inline-flex;align-items:center;gap:10px;min-height:38px;padding:0 14px 0 8px;border-radius:var(--g-radius);background:var(--panel);color:var(--text-2);font-size:14px;font-weight:500;text-decoration:none}.chapter-nav a:hover{background:var(--panel-2);color:var(--text)}.cn-n{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:var(--g-radius-sm);background:var(--g-surface-3);font-size:12px}.course-chapters{display:grid;gap:clamp(64px,6vw,120px);padding-block:clamp(56px,6vw,120px)}.course-chapter{display:grid;grid-template-columns:minmax(240px,.42fr) minmax(0,1fr);align-items:start;gap:clamp(32px,4vw,96px);scroll-margin-top:calc(var(--bar-h) + 32px)}.course-chapter-head{position:sticky;top:calc(var(--bar-h) + 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6px}.lr-n,.lr-summary{display:none}.foot-cols{grid-template-columns:repeat(2,minmax(0,1fr))}.kb-keys{overflow-x:auto}.kb-row,.kb-row-4{min-width:520px}.pg-svg{height:62vh}.pg-status{display:none}.letter{grid-template-columns:minmax(0,1fr)}.bar-studio{display:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}@media print{:root{--room: #fff;--line: #ccc;--text: #000;--text-2: #222;--text-3: #555}body{background:#fff}.bar,.foot,.print-page,.kb,.palette{display:none!important}kbd{border-color:#999;background:#fff;color:#000}.keys-columns{columns:2}}