:root{--bg: #fafaf9;--sur: #ffffff;--sur2: #f0efed;--tx: #1c1917;--tx2: #78716c;--bd: #e7e5e4;--grn: #0e7c3f;--grn-dark: #0a5c2f;--yel: #d97706;--red: #dc2626;--grns: #e9f4ee;--reds: #fbecec;--yels: #fbf1e1;--radius: 12px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--tx);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px;-webkit-font-smoothing:antialiased}a{color:var(--grn);text-decoration:none}a:hover{color:var(--grn-dark)}.ms{font-family:Material Symbols Outlined;font-weight:400;font-style:normal;line-height:1;display:inline-block;letter-spacing:normal;text-transform:none;white-space:nowrap;-webkit-font-smoothing:antialiased;font-variation-settings:"opsz" 24;-webkit-user-select:none;user-select:none}.mono{font-family:ui-monospace,Menlo,Consolas,monospace}@keyframes fadeup{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}@keyframes toastin{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes shimmer{0%{background-position:-320px 0}to{background-position:320px 0}}.btn{height:38px;padding:0 14px;border-radius:8px;border:1px solid transparent;font-size:13.5px;font-weight:650;font-family:inherit;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:7px;white-space:nowrap;transition:background .15s,border-color .15s,color .15s}.btn:disabled{opacity:.55;cursor:default}.btn .ms{font-size:18px}.btn-primary{background:var(--grn);color:#fff}.btn-primary:hover:not(:disabled){background:var(--grn-dark)}.btn-secondary{background:var(--sur);border-color:var(--bd);color:var(--tx)}.btn-secondary:hover:not(:disabled){background:var(--sur2)}.btn-secondary .ms{color:var(--tx2)}.btn-sm{height:32px;padding:0 11px;font-size:12.5px}.btn-sm .ms{font-size:16px}.btn-block{width:100%;height:44px}.field{display:flex;flex-direction:column;gap:7px}.field-label{font-size:11.5px;font-weight:700;letter-spacing:.6px;color:var(--tx2);text-transform:uppercase}.field-hint{font-size:11.5px;color:var(--tx2);line-height:1.4}.input,.select,.textarea{border:1px solid var(--bd);border-radius:8px;background:var(--bg);color:var(--tx);font-family:inherit;font-size:14px;outline:none;transition:border-color .15s}.input,.select{height:40px;padding:0 12px}.input:focus,.select:focus,.textarea:focus{border-color:var(--grn)}.input-lg{height:44px;font-size:16px;font-weight:600}.textarea{padding:10px 12px;line-height:1.55;resize:vertical;min-height:80px}.search-input{padding-left:34px}.search-wrap{position:relative}.search-wrap .ms{position:absolute;left:10px;top:11px;font-size:18px;color:var(--tx2);pointer-events:none}.checkbox-label{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--tx);cursor:pointer}.badge{display:inline-block;font-size:11.5px;font-weight:700;padding:3px 9px;border-radius:99px;white-space:nowrap}.badge-green{background:var(--grns);color:var(--grn)}.badge-yellow{background:var(--yels);color:var(--yel)}.badge-gray{background:var(--sur2);color:var(--tx2)}.pill{display:inline-block;font-size:12px;font-weight:600;padding:3px 9px;border-radius:99px;background:var(--sur2);color:var(--tx2)}.pill-mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700}.chip{padding:8px 13px;border-radius:999px;border:1px solid var(--bd);background:var(--sur);color:var(--tx);font-size:13px;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s,color .15s}.chip:hover{border-color:var(--tx2)}.chip-active{border-color:var(--grn);background:var(--grns);color:var(--grn)}.chip-sm{padding:5px 11px;font-size:12px}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:400px;max-width:100%;border:1px solid var(--bd);border-radius:var(--radius);background:var(--sur);padding:32px;display:flex;flex-direction:column;gap:16px}.login-sub{font-size:13.5px;color:var(--tx2);line-height:1.5;margin-top:-6px}.logo{display:flex;align-items:baseline;gap:7px;font-weight:800;letter-spacing:-.4px}.logo-word{font-size:28px}.logo-dot{width:9px;height:9px;border-radius:99px;background:var(--grn);display:inline-block}.logo-tag{font-size:12px;font-weight:650;color:var(--tx2);margin-left:3px;letter-spacing:0}.layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:232px;flex:none;border-right:1px solid var(--bd);background:var(--sur);display:flex;flex-direction:column;padding:20px 12px 16px}.sidebar .logo{padding:0 10px}.sidebar .logo-word{font-size:19px;letter-spacing:-.3px}.sidebar .logo-dot{width:7px;height:7px}.sidebar .logo-tag{font-size:11px}.nav{display:flex;flex-direction:column;gap:2px;margin-top:22px}.nav a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;color:var(--tx2);font-size:14px;font-weight:550;transition:background .12s,color .12s}.nav a .ms{font-size:19px}.nav a:hover{background:var(--sur2);color:var(--tx)}.nav a.active{background:var(--grns);color:var(--grn);font-weight:650}.sidebar-spacer{flex:1}.sidebar-footer{border-top:1px solid var(--bd);padding:14px 10px 0;display:flex;flex-direction:column;gap:8px}.sidebar-user-name{font-size:13.5px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.logout-btn{display:flex;align-items:center;gap:8px;color:var(--tx2);font-size:13px;cursor:pointer;padding:4px 0;background:none;border:none;font-family:inherit}.logout-btn:hover{color:var(--tx)}.logout-btn .ms{font-size:17px}.main{flex:1;min-width:0;overflow-y:auto}.content{padding:26px 32px 48px;max-width:1160px}.page-header{display:flex;align-items:center;gap:12px;margin-bottom:16px}.page-title{font-size:22px;font-weight:750;margin:0;flex:1;display:flex;align-items:baseline;gap:12px}.count-note{font-size:13px;font-weight:400;color:var(--tx2)}.page-subtitle{font-size:13px;color:var(--tx2);margin:-8px 0 18px;line-height:1.45}.page-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:16px}.table-card{border:1px solid var(--bd);border-radius:var(--radius);background:var(--sur);overflow-x:auto}.table{width:100%;border-collapse:collapse;min-width:760px}.table thead th{text-align:left;font-size:11.5px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--tx2);padding:11px 16px}.table tbody td{padding:12px 16px;border-top:1px solid var(--bd);font-size:14px;vertical-align:middle}.table tbody tr.clickable{cursor:pointer}.table tbody tr.clickable:hover{background:var(--bg)}.cell-strong{font-weight:600}.cell-secondary{color:var(--tx2);font-size:13px}.cell-actions{text-align:right;white-space:nowrap}.cell-actions .btn{margin-left:8px}.lesson-cell-title{font-size:14.5px;font-weight:600}.lesson-cell-ann{font-size:12px;color:var(--tx2);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:380px}.package-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:14px}.package-card{border:1px solid var(--bd);border-radius:var(--radius);background:var(--sur);padding:18px;display:flex;flex-direction:column;gap:10px}.package-card-top{display:flex;align-items:center;gap:10px}.package-title{font-size:16.5px;font-weight:700;flex:1}.package-desc{font-size:13px;color:var(--tx2);line-height:1.45}.package-stats{font-size:12.5px;color:var(--tx2)}.package-status-line{display:flex;align-items:center;gap:6px;font-size:12.5px;font-weight:650}.package-status-line .dot{width:7px;height:7px;border-radius:99px;display:inline-block}.feedback-list{display:flex;flex-direction:column;gap:10px;max-width:1000px}.feedback-card{border:1px solid var(--bd);border-radius:var(--radius);background:var(--sur);padding:16px;display:flex;gap:14px}.feedback-card.resolved{opacity:.6}.feedback-dot{width:8px;height:8px;border-radius:99px;flex:none;margin-top:7px}.feedback-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:7px}.feedback-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:12.5px;color:var(--tx2)}.feedback-lesson-link{display:inline-flex;align-items:center;gap:5px;color:var(--grn);font-weight:650;cursor:pointer}.feedback-lesson-link:hover{color:var(--grn-dark)}.feedback-text{font-size:14.5px;line-height:1.55}.feedback-side{flex:none}.users-note{font-size:12.5px;color:var(--tx2);line-height:1.5;margin-top:4px}.editor-head{display:flex;align-items:center;gap:14px;margin-bottom:18px}.icon-square{width:38px;height:38px;flex:none;border:1px solid var(--bd);border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;background:var(--sur);color:var(--tx)}.icon-square:hover{background:var(--sur2)}.editor-head-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:7px}.editor-title-input{font-size:20px;font-weight:750;border:none;background:transparent;color:var(--tx);outline:none;font-family:inherit;padding:0;width:100%}.editor-title-input::placeholder{color:var(--tx2)}.editor-subrow{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.editor-subrow-note{font-size:12px;color:var(--tx2)}.editor-columns{display:flex;gap:26px;align-items:flex-start}.editor-blocks{flex:1;min-width:0;display:flex;flex-direction:column;gap:12px}.block-card{border:1px solid var(--bd);border-radius:var(--radius);background:var(--sur);overflow:hidden}.block-card-head{display:flex;align-items:center;gap:8px;padding:9px 14px;border-bottom:1px solid var(--bd)}.block-card-head .ms.block-icon{font-size:17px;color:var(--tx2)}.block-type{font-size:11.5px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:var(--tx2)}.block-actions{margin-left:auto;display:flex;align-items:center;gap:2px}.icon-btn{width:28px;height:28px;border:none;background:none;border-radius:6px;cursor:pointer;color:var(--tx2);display:inline-flex;align-items:center;justify-content:center;font-family:inherit}.icon-btn .ms{font-size:19px}.icon-btn:hover:not(:disabled){background:var(--sur2);color:var(--tx)}.icon-btn.danger:hover:not(:disabled){color:var(--red)}.icon-btn:disabled{opacity:.3;cursor:default}.block-body{padding:13px 14px;display:flex;flex-direction:column;gap:9px}.block-hint{font-size:11.5px;color:var(--tx2)}.mini-toolbar{display:flex;gap:6px;flex-wrap:wrap}.mini-tool{height:28px;border-radius:6px;border:1px solid var(--bd);background:var(--sur);display:inline-flex;align-items:center;gap:5px;padding:0 9px;font-size:12px;font-weight:600;cursor:pointer;color:var(--tx2);font-family:inherit}.mini-tool:hover{background:var(--sur2);color:var(--tx)}.mini-tool .ms{font-size:15px}.quiz-opt-row{display:flex;gap:8px;align-items:center}.quiz-opt-row .corr-toggle{cursor:pointer;font-size:21px;flex:none;background:none;border:none;padding:0;display:inline-flex}.quiz-opt-row .input{min-width:0}.quiz-opt-txt{flex:1.2}.quiz-opt-why{flex:1;color:var(--tx2);font-size:12.5px}.add-opt{height:32px;border-radius:8px;border:1px dashed var(--bd);display:flex;align-items:center;justify-content:center;gap:6px;font-size:12.5px;font-weight:600;cursor:pointer;color:var(--tx2);background:none;font-family:inherit}.add-opt:hover{border-color:var(--tx2);color:var(--tx)}.toggle{width:38px;height:23px;border-radius:99px;position:relative;cursor:pointer;transition:background .2s;flex:none;border:none;padding:0}.toggle .knob{position:absolute;top:2.5px;width:18px;height:18px;border-radius:99px;background:#fff;transition:left .2s}.add-block{border:1px dashed var(--bd);border-radius:var(--radius);padding:12px 14px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}.add-block-label{font-size:12px;font-weight:700;letter-spacing:.5px;color:var(--tx2);margin-right:4px}.add-block-btn{height:32px;border-radius:8px;border:1px solid var(--bd);background:var(--sur);display:inline-flex;align-items:center;gap:6px;padding:0 11px;font-size:12.5px;font-weight:600;cursor:pointer;color:var(--tx);font-family:inherit}.add-block-btn:hover:not(:disabled){background:var(--sur2)}.add-block-btn:disabled{opacity:.5;cursor:default}.add-block-btn .ms{font-size:16px;color:var(--tx2)}.soon-tag{font-size:10px;font-weight:700;color:var(--tx2);background:var(--sur2);padding:1px 5px;border-radius:99px}.preview-pane{width:426px;flex:none;position:sticky;top:22px}.preview-pane-label{font-size:11.5px;font-weight:700;letter-spacing:.6px;color:var(--tx2);margin-bottom:10px;text-transform:uppercase}.phone-frame{width:390px;border:1px solid var(--bd);border-radius:24px;background:var(--bg);max-height:calc(100vh - 130px);overflow-y:auto;padding:22px 20px}.reader-screen{min-height:100vh;background:var(--bg)}.reader-topbar{position:sticky;top:0;background:var(--bg);border-bottom:1px solid var(--bd);padding:13px 32px;display:flex;align-items:center;gap:12px;z-index:5}.reader-topbar-meta{font-size:12.5px;color:var(--tx2)}.reader-topbar-spacer{flex:1}.reader{max-width:720px;margin:0 auto;padding:38px 24px 90px;display:flex;flex-direction:column;gap:16px}.reader-title{font-size:30px;font-weight:800;line-height:1.2;letter-spacing:-.5px;margin:0}.reader-summary{font-size:16px;color:var(--tx2);line-height:1.5;margin:0}.preview{display:flex;flex-direction:column;gap:14px}.preview-title{font-size:23px;font-weight:750;line-height:1.25;letter-spacing:-.3px}.preview-summary{font-size:14px;color:var(--tx2);line-height:1.5}.preview-tags{display:flex;gap:6px;flex-wrap:wrap}.tag{font-size:12px;color:var(--tx2);background:var(--sur2);padding:3px 9px;border-radius:99px}.md{font-size:15px;line-height:1.6}.reader .md{font-size:16px;line-height:1.65}.md h3{font-size:18px;font-weight:700;margin:8px 0 0}.reader .md h3{font-size:20px}.md p{margin:0 0 10px}.md p:last-child{margin-bottom:0}.md ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.md li{position:relative;padding-left:16px;line-height:1.55}.md li:before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:99px;background:var(--grn)}.md-table-wrap{overflow-x:auto;border:1px solid var(--bd);border-radius:var(--radius)}.md-table{border-collapse:collapse;width:100%;font-size:13.5px}.reader .md-table{font-size:14.5px}.md-table th{background:var(--sur2);text-align:left;font-weight:650;padding:9px 12px;white-space:nowrap}.md-table td{padding:9px 12px;border-top:1px solid var(--bd)}.preview-block,.reader-block{display:flex;flex-direction:column}.preview-image img,.preview-image .image-placeholder{width:100%;border-radius:var(--radius);border:1px solid var(--bd)}.preview-image img{display:block}.image-placeholder{background:var(--sur2);aspect-ratio:16 / 9;display:flex;align-items:center;justify-content:center;color:var(--tx2);font-size:13px;text-align:center;padding:12px}.preview-image figcaption{font-size:12.5px;color:var(--tx2);text-align:center;margin-top:8px}.preview-quiz{border:1px solid var(--bd);border-radius:var(--radius);background:var(--sur);padding:15px;display:flex;flex-direction:column;gap:11px}.preview-quiz-tag{display:flex;align-items:center;gap:8px;font-size:11.5px;font-weight:700;letter-spacing:.7px;color:var(--tx2);text-transform:uppercase}.preview-quiz-tag:before{content:"help";font-family:Material Symbols Outlined;font-size:19px;color:var(--grn);letter-spacing:normal;text-transform:none}.preview-quiz-question{font-size:15px;font-weight:600;line-height:1.45;margin:0}.preview-quiz-hint{font-size:12px;color:var(--yel);font-weight:650;margin-top:-5px}.quiz-option{border:1.5px solid var(--bd);border-radius:10px;padding:10px 11px;display:flex;gap:9px;align-items:flex-start;margin-bottom:7px}.quiz-option:last-child{margin-bottom:0}.quiz-option.correct{border-color:var(--grn);background:var(--grns)}.quiz-option-mark{flex:none;width:19px;height:19px;display:inline-flex;align-items:center;justify-content:center;color:var(--tx2);font-size:13px;margin-top:1px}.quiz-option.correct .quiz-option-mark{color:var(--grn)}.quiz-option-mark.square{border:1.5px solid currentColor;border-radius:4px}.quiz-option-mark.round{border:1.5px solid currentColor;border-radius:99px}.quiz-option-body{flex:1}.quiz-option-feedback{font-size:12px;color:var(--tx2);margin-top:4px;line-height:1.45}.preview-quiz-explanation{border-radius:10px;background:var(--sur2);padding:11px 13px;font-size:13px;line-height:1.5;color:var(--tx2)}.preview-normref{border:1px solid var(--bd);border-radius:var(--radius);padding:13px 15px;background:var(--sur);display:flex;gap:10px}.normref-icon{font-weight:800;color:var(--grn);font-size:15px}.normref-doc{font-size:12px;font-weight:650;color:var(--tx2)}.normref-quote{font-size:14px;line-height:1.55;margin-top:6px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#1c191773;z-index:50;display:flex;align-items:center;justify-content:center;padding:24px}.modal{width:440px;max-width:100%;border:1px solid var(--bd);border-radius:var(--radius);background:var(--sur);padding:24px;display:flex;flex-direction:column;gap:14px;animation:fadeup .2s ease}.modal-title{font-size:17px;font-weight:700;margin:0;display:flex;align-items:center;gap:10px}.modal-title .ms{font-size:22px;color:var(--grn)}.modal-actions{display:flex;gap:8px;margin-top:4px}.modal-actions .btn{flex:1;height:42px}.modal-actions .btn-primary{flex:1.4}.stack{display:flex;flex-direction:column;gap:14px}.token-warning{border-radius:8px;background:var(--yels);padding:11px 13px;font-size:13px;line-height:1.5;color:var(--yel);font-weight:550}.token-row{display:flex;gap:8px;align-items:center}.token-box{flex:1;height:44px;border:1px solid var(--bd);border-radius:8px;background:var(--bg);display:flex;align-items:center;padding:0 14px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;font-weight:600;letter-spacing:.5px;overflow-x:auto;white-space:nowrap;-webkit-user-select:all;user-select:all}.toast{position:fixed;right:24px;bottom:24px;background:#1c1917;color:#fafaf9;border:1px solid #3a3531;padding:11px 16px;border-radius:10px;font-size:13.5px;line-height:1.4;z-index:60;animation:toastin .25s ease;max-width:380px}.error-banner{border:1px solid var(--red);background:var(--reds);color:var(--red);border-radius:8px;padding:11px 14px;font-size:13px;line-height:1.45;margin-bottom:14px}.empty-state,.loading-note{padding:40px 24px;text-align:center;color:var(--tx2);font-size:14px}.saved-note{font-size:13px;color:var(--grn);font-weight:600}.skeleton{height:12px;border-radius:6px;background:linear-gradient(90deg,var(--sur2) 0%,var(--bg) 50%,var(--sur2) 100%);background-size:320px 100%;animation:shimmer 1.2s infinite linear}.editor-left{flex:1;min-width:0;display:flex;flex-direction:column;gap:12px}.editor-meta{border:1px solid var(--bd);border-radius:var(--radius);background:var(--sur);padding:14px;display:flex;flex-direction:column;gap:12px}.table-fixed{table-layout:fixed}.table-fixed .lesson-cell-title{overflow-wrap:anywhere}
