[hidden]{display:none!important}.portal-library{max-width:1100px;margin:auto;padding:40px 24px 80px;color:#242823}.portal-library a{color:inherit}.portal-library h1{font:42px Georgia,serif;margin:24px 0 12px}.portal-library .intro{max-width:680px;line-height:1.7;color:#62685f}.portal-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.portal-actions button,.portal-file,.portal-open,.portal-card button{display:inline-block;border:1px solid #c6cbbf;border-radius:10px;padding:12px 18px;background:#f9faf7;color:#242823;cursor:pointer;text-decoration:none;font:inherit}.portal-actions button,.portal-open{background:#303c32;color:white}.portal-file input{display:block;margin-top:8px;max-width:100%;font-size:12px}.portal-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:20px}.portal-card,.portal-empty{background:#fcfcf8;border:1px solid #d5d9ce;padding:24px;border-radius:18px}.portal-card h2{font:26px Georgia,serif;margin:0 0 10px;overflow-wrap:anywhere}.portal-card p{line-height:1.5;color:#62685f}.portal-card details{margin-top:20px;border-top:1px solid #d5d9ce;padding-top:18px}.portal-card summary{cursor:pointer}.portal-students{display:grid;gap:12px;margin:18px 0;max-height:260px;overflow:auto}.portal-students label{display:flex;align-items:center;gap:10px}.portal-students input{width:18px;height:18px}.portal-note{font-size:13px;line-height:1.5}.portal-bar{padding:10px 24px;background:#e9eee3;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.portal-bar a{color:#263c2b}.portal-bar button{border:0;background:none;font-size:12px;color:#425440;text-align:left;cursor:pointer}.portal-bar .save-error{color:#9a381e}.portal-student #import-open,.portal-student #arrangement-edit,.portal-student #phrases-edit,.portal-student #exercise-add,.portal-student #exercise-edit,.portal-student #exercise-save-current,.portal-student #exercise-undo{display:none!important}.portal-student #exercise-empty{display:none}#exercise-link{display:none!important}body:has(.portal-library){background:#f1f3ec}.portal-library #portal-notice{color:#8a3d24;white-space:pre-line}@media(max-width:600px){.portal-library{padding:24px 16px}.portal-library h1{font-size:34px}.portal-bar{padding:10px 16px}.portal-actions>*{width:100%}}
.portal-library .portal-open{color:white}
.portal-tabs{display:flex;gap:8px;margin:24px 0;flex-wrap:wrap}
.portal-tabs a{padding:10px 18px;border:1px solid #c6cbbf;border-radius:999px;text-decoration:none}
.portal-tabs a[aria-current]{background:#303c32;color:white;border-color:#303c32}
.portal-edit-form{display:grid;gap:14px;margin-top:18px}
.portal-edit-form label{display:grid;gap:6px;font-size:13px}
.portal-edit-form input{width:100%;padding:10px;border:1px solid #c6cbbf;border-radius:8px;background:white;color:#242823;font:inherit}
.portal-card button:disabled{opacity:.55;cursor:wait}
.portal-replace-dialog{width:min(720px,calc(100% - 32px));max-height:90vh;overflow:auto}
.portal-replace-dialog input[type=file]{max-width:100%;font-size:13px}
.portal-replace-dialog .form-grid .wide.form-grid{margin:0}
.portal-replace-dialog .form-footer{justify-content:flex-end;gap:12px}
.portal-replace-dialog .form-footer button{padding:12px 18px;border-radius:10px}
.portal-replace-dialog button:disabled{opacity:.5;cursor:wait}
.portal-reset-note{margin:20px 0;padding:16px;background:#fff4e4;border:1px solid #dcc8a6;border-radius:12px;font-size:13px;line-height:1.6}
.portal-reset-note label{display:flex;gap:10px;align-items:flex-start;font-weight:600}
.portal-reset-note input{flex:none;width:18px;height:18px;margin-top:3px}
.portal-score-preview{max-height:220px;overflow:auto;border:1px solid #d5d9ce;border-radius:10px;background:white;padding:12px}
.portal-score-preview svg{display:block;width:100%;min-width:600px;height:auto}
.portal-replace-dialog p,.portal-replace-dialog label{color:#51594f}
.portal-error{color:#9a381e;font-size:13px;line-height:1.5}
.portal-edit-form textarea{width:100%;padding:10px;border:1px solid #c6cbbf;border-radius:8px;background:white;color:#242823;font:inherit;resize:vertical;line-height:1.5}
.portal-edit-form .demo-confirm{display:flex;align-items:flex-start;gap:10px;line-height:1.5}
.portal-edit-form .demo-confirm input{width:18px;height:18px;flex:none;margin-top:2px}
.demo-management a,.demo-management input{overflow-wrap:anywhere;max-width:100%}
.demo-intro{padding:24px;margin:20px 0;background:#e9eee3;border:1px solid #cbd5c2;border-radius:16px}
.demo-intro h2,.demo-offer h2{font:28px/1.2 Georgia,serif;margin:12px 0}
.demo-intro p,.demo-offer p{max-width:760px;font-size:15px;line-height:1.65;color:#475143;white-space:pre-line}
.demo-intro button{padding:13px 20px;margin-top:8px;border-radius:10px}
.demo-intro .demo-caption,.demo-offer .demo-caption{font-size:12px;color:#53604d;margin-top:12px}
.demo-offer{padding:30px;margin:28px 38px 40px;background:#fcfcf8;border:1px solid #ccd3c6;border-radius:16px}
.demo-offer-action{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:24px}
.demo-offer-action strong{font-size:22px;color:#293827}
.demo-purchase{display:inline-block;padding:15px 22px;background:#303c32;color:white;border-radius:10px;text-decoration:none;font-weight:600}
.demo-purchase:hover{background:#43523f}
#demo-complete{background:#e9eee3;padding:12px 16px;border-radius:8px}
.portal-demo #library-open-mobile,.portal-demo #feedback-open,.portal-demo #lesson-export,.portal-demo #mode-original,.portal-demo .library-label,.portal-demo .small-chevron{display:none!important}
.portal-demo #library-open{pointer-events:none;cursor:default}
.portal-demo .exercise-panel{scroll-margin-top:16px}
.portal-demo .demo-description{overflow-wrap:anywhere}
.portal-demo .lesson-header,.portal-demo .lesson-panel h3,.portal-demo .lesson-intro,.portal-demo #lesson-steps,.portal-demo .lesson-tip,.portal-demo #welcome-library{display:none!important}
.portal-demo .lesson-panel{display:block}
.portal-demo .song-heading{margin-bottom:16px}
.portal-demo .demo-intro{margin-top:12px}
@media(max-width:600px){.demo-intro{padding:20px 16px}.demo-offer{margin:20px 16px 32px;padding:22px 18px}.demo-intro h2,.demo-offer h2{font-size:25px}.demo-offer-action{align-items:stretch;flex-direction:column;gap:12px}.demo-purchase{text-align:center}}