:root{--bg:#faf8f5;--paper:#fffefa;--ink:#302e32;--muted:#858087;--line:#e9e3df;--wine:#873e4e;--rose:#f3e6e8}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font:14px/1.6 'Be Vietnam Pro',Arial,sans-serif}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button{color:inherit}button:disabled{opacity:.35;cursor:default}a{color:inherit;text-decoration:none}button{border:0;background:none}button:focus-visible,a:focus-visible{outline:2px solid var(--wine);outline-offset:4px}input:focus,textarea:focus,select:focus{outline:2px solid #be8e99;outline-offset:1px}h1,h2,h3,p{margin:0}h2{font-size:23px;letter-spacing:-.6px;font-weight:600}small{font-size:11px}.sidebar{position:fixed;left:0;top:0;bottom:0;width:226px;background:#f2eeea;border-right:1px solid var(--line);padding:31px 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#c7a7ab50;border-radius:50%;height:410px;width:410px;left:-10px;top:20px;transform:rotate(30deg)}.orbit2{height:310px;width:310px;left:42px;top:70px}.music-paper{position:absolute;top:53px;right:50px;width:210px;height:232px;background:#fffcf5;transform:rotate(-12deg);box-shadow:0 18px 40px #704a5630;padding:23px 20px;border-radius:3px}.paper-label{font-size:6px;letter-spacing:1.5px;color:#a08c8d}.staff{margin-top:37px;background:repeating-linear-gradient(to bottom,transparent 0,transparent 7px,#c9b9b9 7px,#c9b9b9 8px);height:33px;position:relative}.staff>span{position:absolute;top:-24px;font:55px/1.5 serif;color:#95747e}.staff.lower{margin-top:30px}.staff.lower>span{font-size:40px;top:-12px}.music-paper p{font:italic 12px 'Be Vietnam Pro';text-align:right;margin-top:23px;color:#a58b8e}.keyboard{position:absolute;right:-34px;bottom:20px;width:315px;height:99px;display:flex;transform:rotate(-12deg);border:8px solid #403439;background:#403439;box-shadow:0 18px 24px 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.storage-note{font-size:10px;line-height:1.7}.error{color:#a83043!important;font-size:11px!important}.muted{color:#95838e}.info-steps{counter-reset:steps;list-style:none;padding:0}.info-steps li{padding:13px 0;border-bottom:1px solid var(--line);font-size:12px}.info-steps li strong{color:var(--wine);display:block}.sources-list{padding-left:18px;font-size:11px;line-height:2}.sources-list a{text-decoration:underline}.guide-staff{width:100%;background:white;border:1px solid var(--line);border-radius:8px;margin:15px 0}.source-small{font-size:10px;color:#9d8a96;text-decoration:underline}.danger{color:#aa5c65;font-size:11px;text-decoration:underline}.detail-local{padding:15px;background:#eef3ed;border-radius:8px}.detail-local p{margin:0;color:#54705e}#toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#44323c;color:#fff;padding:11px 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input[type=range]{width:64px;accent-color:var(--wine)}.speed-label{display:flex;align-items:center;gap:8px}.toolgroup select{padding:6px}.toolgroup .playing{background:var(--wine);color:#fff}#beatLight{width:8px;height:8px;border-radius:50%;background:#cfc2c8}#beatLight.on{background:var(--wine);box-shadow:0 0 0 4px #e8c6d2}.reader-body{display:flex;min-height:0;flex:1}#sheetViewport{overflow:auto;flex:1;scroll-behavior:auto;padding:24px 12px 50px;overscroll-behavior:contain}#sheetPages{width:min(850px,100%);margin:0 auto;display:flex;flex-direction:column;gap:24px;align-items:center}#sheetPages canvas,#sheetPages img{display:block;width:100%;height:auto;background:white;box-shadow:0 4px 18px #392b3220}#sheetPages .load-msg{padding:60px;background:white;border-radius:8px;font-size:13px;width:100%;text-align:center}.practice-notes{width:280px;background:var(--paper);padding:24px;overflow:auto;border-left:1px solid var(--line)}.practice-notes h3{font-size:16px}.practice-notes 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@media(max-width:900px){.sidebar{width:70px;padding:24px 10px}.brand{padding:0;justify-content:center}.brand>span:not(.brand-icon){display:none}.side-label,#sideShows,.sidebar-bottom{display:none}nav{margin-top:30px}nav button{font-size:0;display:block;text-align:center;padding:12px 0}nav button span{font-size:22px}nav button b{display:none}.app{margin-left:70px}.topbar{height:65px}.hero-copy{width:75%}.hero-art{opacity:.4}.hero-actions .text-btn{font-size:10px}.collection-grid{gap:10px}.collection-art .wordmark{font-size:17px}.collection-text b{font-size:10px}.collection-art{height:90px}.collection-art strong{font-size:44px}.count-info{font-size:9px}.private{display:none}.show-cell{display:none}.table-head,.song-row{grid-template-columns:22px minmax(150px,1fr) 125px 50px}.table-head>span:nth-child(3){display:none}footer p{display:none}.practice-notes{width:240px}.reader-tools{padding:8px}.hero p{font-size:11px}}
@media(max-width:600px){.sidebar{position:relative;width:100%;height:65px;padding:12px 18px;flex-direction:row;align-items:center;justify-content:space-between;border-right:0;border-bottom:1px solid var(--line)}.brand>span:not(.brand-icon){display:block;font-size:18px}.brand small{font-size:6px}.brand-icon{width:31px;height:34px;border-radius:8px;font-size:31px}nav{display:flex;margin:0;gap:8px}nav button{margin:0;width:36px;padding:6px}nav button span{font-size:21px}.app{margin-left:0}.topbar{padding:0 20px;height:56px}.crumb{font-size:9px}.crumb span{margin:0 5px}.topbar .button{font-size:10px;padding:7px 9px}main{padding:18px 18px 0}.hero{min-height:345px}.hero-copy{padding:25px 22px;width:100%}.hero .eyebrow{font-size:7px;letter-spacing:1.6px}h1{font-size:32px;line-height:1.3;margin:22px 0 15px;letter-spacing:-1px}.hero p{max-width:265px}.hero-art{width:130px;top:70px;opacity:.14;pointer-events:none}.music-paper{width:130px;right:0}.keyboard{width:230px;bottom:50px}.hero-actions{margin-top:23px;gap:18px}.hero-actions .button{padding:10px 12px;gap:12px;font-size:11px}.hero-actions .text-btn{font-size:9px}.hero-foot{font-size:8px;gap:10px;margin-top:23px}.hero-foot>span:first-child{padding-right:10px}.section-title{margin:25px 0 15px}.section-title h2{font-size:18px}.section-title>span{display:none}.collection-grid{grid-template-columns:repeat(2,1fr);gap:12px}.collection-art{height:88px;padding:14px}.collection-art .wordmark{font-size:21px}.collection-text{padding:10px 13px}.collection-text b{font-size:11px}.library{margin-top:30px}.library h2{font-size:24px}.count-info{font-size:8px;max-width:120px;text-align:right}.filterbar select{font-size:9px;padding:10px 6px;min-width:0}.filterbar select#sort{flex:.7}.search{height:42px}.chips{gap:6px}.chip{font-size:9px;padding:5px 9px}.catalog-note{font-size:9px;padding:9px;align-items:flex-start}.table-head{display:none}.song-row{grid-template-columns:1fr 35px;gap:5px;padding:14px 4px;position:relative;min-height:92px}.song-row .num{display:none}.song-name{gap:10px}.song-name .mini-cover{width:40px;height:44px}.song-name strong{font-size:12px;padding-right:10px}.song-name small{max-width:230px;font-size:9px}.sheet-cell{grid-column:1;margin-left:50px;margin-top:0}.badge{font-size:8px;padding:2px 6px}.row-actions{grid-column:2;grid-row:1/3}.row-open{display:none}.heart{font-size:24px}.pagination{font-size:9px}.pagination .icon-btn{height:30px;width:30px}footer{margin-top:25px;flex-wrap:wrap;padding:20px 0}footer .text-btn{font-size:8px}dialog{padding:28px 22px;width:94vw;border-radius:13px}dialog h2{font-size:27px}.reader-header{padding:0 12px;height:65px;gap:10px}.reader-header h2{font-size:14px}.reader-header .button{font-size:9px;padding:6px}.reader-tools{justify-content:space-between;gap:8px;padding:8px 10px}.toolgroup{font-size:9px;gap:5px}.toolgroup .icon-btn{width:27px;height:27px}.toolgroup .button{font-size:9px;padding:5px 7px}.speed-label{font-size:0;gap:0}.speed-label input{width:43px!important}.toolgroup input[type=number]{width:44px;padding:4px;font-size:11px}.toolgroup select{font-size:9px;padding:4px}.reader-bottom{font-size:8px;padding:8px 10px}.reader-bottom>span:last-child{display:none}.practice-notes{position:absolute;right:0;top:65px;bottom:30px;z-index:1;width:min(300px,85vw);box-shadow:-10px 0 35px #44313e22}#sheetViewport{padding:14px 8px 35px}#sheetPages{gap:14px}.empty{padding:35px 15px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.mobile-tools{display:none}@media(max-width:900px){.mobile-tools{display:flex;justify-content:center;gap:25px;margin-top:25px;padding:10px;border:1px solid var(--line);border-radius:8px}.mobile-tools button{font-size:11px;color:var(--wine)}}

/* Vietnamese typography: bundled full Latin, Latin extended and Vietnamese glyphs. */
:root{--font-ui:'Be Vietnam Pro',Arial,sans-serif}
body{font-family:var(--font-ui);line-height:1.7}
h1{font-weight:500;line-height:1.4;letter-spacing:-1px}
h1 em{font-weight:400}
h2,h3{letter-spacing:-.25px;line-height:1.5}
dialog h2{line-height:1.45;font-weight:500;letter-spacing:-.6px}
.collection-art .wordmark{font-family:var(--font-ui);font-weight:500;line-height:1.4;font-size:18px;letter-spacing:-.4px;margin-top:8px}
.collection-art{height:116px}
.song-name strong{font-size:13px;line-height:1.65;overflow-wrap:anywhere}
.song-name small{font-size:10px;line-height:1.7}
.guide-label{font-family:var(--font-ui)}
@media(max-width:1200px){h1{font-size:31px}.collection-art .wordmark{font-size:17px}.collection-art{height:112px}}
@media(max-width:600px){h1{font-size:27px;line-height:1.5;letter-spacing:-.6px}.hero-copy{padding:25px 20px}.hero p{font-size:12px;line-height:1.9}.collection-art .wordmark{font-size:18px}.collection-art{height:112px}.song-name strong{font-size:13px}.song-name small{font-size:10px}.hero-actions{gap:12px}.hero-actions .button{font-size:10px;padding:10px;gap:8px}.hero-actions .text-btn{font-size:9px}}
[hidden]{display:none!important}.category-filters{display:flex;align-items:end;gap:16px;margin:24px 0 16px;flex-wrap:wrap}.category-filters label{flex:1;min-width:200px;font-size:12px;font-weight:600;color:#6e4c58}.category-filters select{display:block;width:100%;padding:13px;margin-top:8px;border:1px solid #ddccd0;border-radius:10px;background:#fffaf8;color:#553545;font:inherit}.collection-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.collection-art .wordmark{font-size:24px;max-width:80%;line-height:1.5}.collection{max-width:450px}#cloudStatus{font-size:12px;color:#866472}#info input,#info select{box-sizing:border-box;width:100%;padding:12px;border:1px solid #ddccd0;border-radius:8px;font:inherit}#info hr{border:0;border-top:1px solid #e7d9dd;margin:26px 0}.crumb{text-decoration:none;color:inherit}.topbar>div{display:flex;gap:10px;align-items:center}@media(max-width:600px){.category-filters{display:grid;grid-template-columns:1fr}.category-filters label{min-width:0}.collection{max-width:none}.topbar .private{display:none}}