:root,.study-page,.st-modal-overlay{--st-panel:var(--bg2);--st-panel2:var(--bg3);--st-border:var(--glass-border,var(--border));--st-border-strong:#ffffff29;--st-text:var(--text,#f8fafc);--st-text-dim:var(--text2,#cbd5e1);--st-text-mute:var(--text3,#94a3b8);--st-teal:#3d51ad;--st-teal-fill:#5065c7;--st-teal-bg:#3d51ad29;--st-purple:#7f77dd;--st-purple-bg:#7f77dd24;--st-coral:#f97316;--st-coral-bg:#f9731624;--st-danger:var(--red,#ef4444);--st-danger-bg:#ef444424;--st-radius:12px}[data-theme=light],[data-theme=light] .study-page,[data-theme=light] .st-modal-overlay{--st-panel:var(--bg2,#fff);--st-panel2:var(--bg3,#f1f5f9);--st-border:var(--border,#00000017);--st-border-strong:#0f172a2e;--st-text:var(--text,#0f172a);--st-text-dim:var(--text2,#475569);--st-text-mute:var(--text3,#94a3b8);--st-teal:#3d51ad;--st-teal-fill:#31428f;--st-teal-bg:#3d51ad24;--st-purple-bg:#6366f11f;--st-coral-bg:#f973161f;--st-danger-bg:#ef44441a}.study-page{width:100%;max-width:100%;font-family:var(--font,sans-serif);color:var(--st-text);padding-bottom:calc(5rem + env(safe-area-inset-bottom,20px));margin:0}.study-page *,.study-page :before,.study-page :after,.st-modal-overlay *,.st-modal-overlay :before,.st-modal-overlay :after{box-sizing:border-box}.st-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;padding-right:180px;display:flex}.st-header-title-wrap{align-items:center;gap:12px;display:flex}.st-header-icon-wrap{border:1px solid var(--st-border-strong);width:42px;height:42px;color:var(--st-teal-fill);background:linear-gradient(135deg,#3d51ad38,#7f77dd29);border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;display:flex;box-shadow:0 4px 14px #3d51ad26}.st-title-text-group{flex-direction:column;gap:2px;display:flex}.st-title-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.st-header h1{letter-spacing:-.02em;color:var(--st-text);margin:0;font-size:21px;font-weight:700;line-height:1.2}.st-header p{color:var(--st-text-dim);margin:2px 0 0;font-size:12px}.st-stats-trigger-wrap{display:inline-flex;position:relative}.st-stats-pill-btn{background:var(--st-panel2);border:1px solid var(--st-border-strong);height:28px;color:var(--st-text-dim);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:20px;outline:none;align-items:center;gap:6px;padding:0 10px;font-family:inherit;font-size:11.5px;font-weight:600;transition:all .15s;display:inline-flex}.st-stats-pill-btn:hover,.st-stats-pill-btn.active{background:var(--st-panel);border-color:var(--st-teal);color:var(--st-text);box-shadow:0 2px 8px #3d51ad26}.st-stats-live-dot{background:#10b981;border-radius:50%;flex-shrink:0;width:6px;height:6px;box-shadow:0 0 6px #10b98199}.st-stats-pill-label{color:var(--st-text);font-weight:600}.st-stats-pill-sep{color:var(--st-border-strong);font-size:10px}.st-stats-pill-pct{color:var(--st-teal-fill);font-weight:700}.st-stats-arrow{color:var(--st-text-mute);transition:transform .2s}.st-stats-arrow.open{transform:rotate(180deg)}.st-stats-popover-backdrop{z-index:99998;-webkit-backdrop-filter:blur(3px);background:#00000073;animation:.15s stFadeIn;position:fixed;top:0;bottom:0;left:0;right:0}.st-stats-popover{background:var(--st-panel);border:1px solid var(--st-border-strong);z-index:99999;border-radius:14px;width:320px;max-width:calc(100vw - 32px);padding:14px;animation:.18s cubic-bezier(.16,1,.3,1) stPopIn;position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%);box-shadow:0 16px 36px #00000073,0 0 0 1px #ffffff0f}@media (max-width:640px){.st-stats-popover{width:min(340px,100vw - 28px)!important;max-width:340px!important;position:fixed!important;top:50%!important;left:50%!important;transform:translate(-50%,-50%)!important;box-shadow:0 24px 60px #0009,0 0 0 1px #ffffff14!important}}@keyframes stFadeIn{0%{opacity:0}to{opacity:1}}@keyframes stPopIn{0%{opacity:0;transform:scale(.98)}to{opacity:1;transform:scale(1)}}[data-theme=light] .st-stats-popover{box-shadow:0 16px 36px #0000001f,0 0 0 1px #0000000d}.st-stats-popover-header{border-bottom:1px solid var(--st-border);justify-content:space-between;align-items:center;margin-bottom:12px;padding-bottom:8px;display:flex}.st-stats-popover-title{color:var(--st-text);font-size:13px;font-weight:700}.st-stats-popover-grid{grid-template-columns:1fr 1fr;grid-auto-rows:1fr;gap:8px;display:grid}.st-metric-pill{background:var(--st-panel2);border:1px solid var(--st-border);box-sizing:border-box;border-radius:10px;align-items:center;gap:8px;height:100%;min-height:52px;padding:8px 10px;display:flex;position:relative;overflow:hidden}.st-pill-icon{border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;display:flex}.st-pill-icon.subjects{color:#818cf8;background:#6366f124}.st-pill-icon.progress{color:var(--st-teal-fill);background:#3d51ad2e}.st-pill-icon.topics{color:#10b981;background:#10b98124}.st-pill-icon.mastered{color:#f59e0b;background:#f59e0b24}.st-pill-icon.today{color:var(--st-teal-fill);background:#14b8a624}.st-pill-icon.streak{color:#f59e0b;background:#f59e0b24}.st-pill-icon.weekly{color:#818cf8;background:#6366f124}.st-pill-body{flex-direction:column;flex:1;min-width:0;line-height:1.2;display:flex}.st-pill-label{text-transform:uppercase;letter-spacing:.04em;color:var(--st-text-mute);font-size:10px;font-weight:600}.st-pill-val{color:var(--st-text);font-size:13.5px;font-weight:700}.st-pill-mini-track{background:var(--st-panel);height:2px;position:absolute;bottom:0;left:0;right:0}.st-pill-mini-fill{background:var(--st-teal);height:100%}.st-btn{font-family:var(--font,sans-serif);cursor:pointer;border:1px solid var(--glass-border,var(--border));background:var(--bg2);-webkit-backdrop-filter:var(--glass-blur,blur(28px) saturate(210%));color:var(--st-text);white-space:nowrap;-webkit-user-select:none;user-select:none;border-radius:9px;outline:none;justify-content:center;align-items:center;gap:6px;height:36px;padding:0 14px;font-size:12.5px;font-weight:500;text-decoration:none;transition:all .15s;display:inline-flex;box-shadow:0 2px 8px #00000014}.st-btn:hover{background:var(--bg4,#20263a);border-color:var(--st-teal)}.st-btn:active{transform:scale(.98)}.st-btn.primary{color:#fff;background:#3d51ad;border-color:#3d51ad;font-weight:600}.st-btn.primary:hover{background:#31428f;border-color:#31428f;box-shadow:0 4px 12px #3d51ad59}.st-btn.ghost{color:var(--st-text-dim);background:0 0;border-color:#0000;height:28px;padding:0 6px;font-size:11.5px}.st-btn.ghost:hover{background:var(--st-panel2);color:var(--st-text)}.st-icon-btn{color:var(--st-text-mute);cursor:pointer;background:0 0;border:none;border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;padding:0;font-size:14px;transition:all .15s;display:inline-flex}.st-icon-btn:hover{background:var(--st-panel2);color:var(--st-text)}.st-layout{border:1px solid var(--glass-border,var(--border));min-height:540px;box-shadow:var(--glass-shadow);background:0 0;border-radius:20px;grid-template-columns:280px 1fr;align-items:stretch;gap:0;display:grid;overflow:hidden}.st-sidebar{background:var(--bg2);-webkit-backdrop-filter:var(--glass-blur,blur(28px) saturate(210%));border-right:1px solid var(--glass-border,var(--border));flex-direction:column;height:100%;min-height:0;display:flex;position:relative}.st-sidebar-header{border-bottom:1px solid var(--glass-border,var(--border));background:0 0;flex-direction:column;flex-shrink:0;gap:8px;padding:12px 12px 10px;display:flex}.st-sidebar-title-row{justify-content:space-between;align-items:center;display:flex}.st-sidebar-title{text-transform:uppercase;letter-spacing:.05em;color:var(--st-text-dim);font-size:11.5px;font-weight:700}.st-sidebar-badge{background:var(--st-panel2);color:var(--st-text-mute);border:1px solid var(--st-border);border-radius:10px;padding:2px 7px;font-size:11px;font-weight:600}.st-sidebar-search-wrap{align-items:center;width:100%;display:flex;position:relative}.st-sidebar-search-input{background:var(--st-panel2);border:1px solid var(--st-border);width:100%;height:32px;color:var(--st-text);border-radius:8px;outline:none;padding:0 26px 0 28px;font-family:inherit;font-size:12px;transition:all .15s}.st-sidebar-search-input:focus{border-color:var(--st-teal);background:var(--st-panel);box-shadow:0 0 0 2px #3d51ad2e}.st-sidebar-search-icon{color:var(--st-text-mute);pointer-events:none;position:absolute;left:9px}.st-sidebar-search-clear{color:var(--st-text-mute);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:4px;display:flex;position:absolute;right:6px}.st-add-subject-btn-top{width:100%;height:34px;color:var(--st-text-dim);background:var(--st-panel2);border:1px dashed var(--st-border-strong);cursor:pointer;-webkit-user-select:none;user-select:none;box-sizing:border-box;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:0 12px;font-family:inherit;font-size:12.5px;font-weight:600;transition:all .15s;display:inline-flex}.st-add-subject-btn-top:hover{color:#fff;background:var(--st-teal);border-color:var(--st-teal);border-style:solid;box-shadow:0 2px 8px #3d51ad4d}.st-sidebar-list{overscroll-behavior:contain;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:var(--st-border-strong) transparent;flex:auto;min-height:200px;max-height:560px;padding:4px 0;overflow:hidden auto}.st-sidebar-empty{color:var(--st-text-mute);text-align:center;flex-direction:column;align-items:center;gap:6px;padding:28px 14px;font-size:12.5px;display:flex}.st-subject-item{cursor:pointer;border-left:3px solid #0000;border-bottom:1px solid var(--st-border);justify-content:space-between;align-items:center;gap:8px;padding:9px 12px;transition:background .15s;display:flex}.st-subject-item:hover{background:var(--st-panel2)}.st-subject-item.active{background:var(--st-panel2);border-left-color:var(--st-teal)}.st-subject-item .si-left{flex:1;align-items:center;gap:9px;min-width:0;display:flex}.st-subject-item .si-dot{border-radius:50%;flex-shrink:0;width:9px;height:9px}.st-subject-item .si-name{white-space:nowrap;text-overflow:ellipsis;max-width:120px;color:var(--st-text);font-size:12.5px;font-weight:600;overflow:hidden}.st-subject-item .si-sub{color:var(--st-text-mute);margin-top:1px;font-size:10.5px}.st-subject-item .si-pct{color:var(--st-text-dim);background:var(--st-panel);border:1px solid var(--st-border);border-radius:5px;flex-shrink:0;padding:2px 5px;font-size:11px;font-weight:600}.st-reorder-group{flex-direction:column;gap:1px;display:flex}.st-reorder-btn{color:var(--st-text-mute);cursor:pointer;opacity:.6;background:0 0;border:none;padding:0 2px;font-size:8px;line-height:1}.st-reorder-btn:hover:not(:disabled){color:var(--st-text);opacity:1}.st-subject-menu-trigger{width:24px;height:24px;font-size:15px}.st-sidebar-pagination{background:var(--st-panel2);border-top:1px solid var(--st-border);flex-shrink:0;justify-content:space-between;align-items:center;gap:4px;padding:8px 10px;display:flex}.st-sidebar-page-info{color:var(--st-text-dim);white-space:nowrap;font-size:11px;font-weight:600}.st-sidebar-page-num{color:var(--st-text);font-weight:700}.st-sidebar-page-of{color:var(--st-text-mute)}.st-sidebar-page-total{color:var(--st-text-mute);font-size:10.5px}.st-sidebar-page-controls{align-items:center;gap:3px;display:flex}.st-sidebar-perpage-select{background:var(--st-panel);border:1px solid var(--st-border);height:24px;color:var(--st-text);cursor:pointer;border-radius:6px;outline:none;padding:0 4px;font-size:11px;font-weight:600}.st-mini-page-btn{background:var(--st-panel);border:1px solid var(--st-border);color:var(--st-text);cursor:pointer;border-radius:6px;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;transition:all .15s;display:inline-flex}.st-mini-page-btn:hover:not(:disabled){background:var(--st-teal);border-color:var(--st-teal);color:#fff}.st-mini-page-btn:disabled{opacity:.35;cursor:not-allowed}.st-detail{flex-direction:column;min-height:0;padding:18px 20px;display:flex;background:0 0!important}.st-detail-empty{height:100%;min-height:380px;color:var(--st-text-mute);text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:20px;display:flex}.st-subject-hero{background:var(--bg2);-webkit-backdrop-filter:var(--glass-blur,blur(28px) saturate(210%));border:1px solid var(--glass-border,var(--border));box-shadow:var(--glass-shadow);border-radius:16px;justify-content:space-between;align-items:center;gap:14px;margin-bottom:14px;padding:12px 18px;display:flex;position:relative;overflow:hidden}.st-subject-hero:before{content:"";background:var(--sub-color,var(--st-teal));width:4px;position:absolute;top:0;bottom:0;left:0}.st-hero-left{flex-direction:column;flex:1;gap:5px;min-width:0;display:flex}.st-hero-title-wrap{align-items:center;display:flex}.st-hero-title-wrap .st-rename-input{color:var(--st-text);background:0 0;border:1px solid #0000;border-radius:6px;outline:none;width:100%;margin-left:-4px;padding:2px 4px;font-family:inherit;font-size:19px;font-weight:700;transition:all .15s}.st-hero-title-wrap .st-rename-input:hover,.st-hero-title-wrap .st-rename-input:focus{background:var(--st-panel);border-color:var(--st-border-strong)}.st-hero-right{flex-shrink:0;align-items:center;display:flex}.st-mastery-card{flex-direction:column;align-items:center;gap:3px;display:flex}.st-mastery-circle-wrap{justify-content:center;align-items:center;width:44px;height:44px;display:flex;position:relative}.st-mastery-svg{width:100%;height:100%;transform:rotate(-90deg)}.st-circle-bg{fill:none;stroke:var(--st-border-strong);stroke-width:3.2px}.st-circle-stroke{fill:none;stroke-width:3.2px;stroke-linecap:round;transition:stroke-dasharray .4s}.st-mastery-inner{justify-content:center;align-items:center;display:flex;position:absolute;top:0;bottom:0;left:0;right:0}.st-mastery-pct{font-size:11px;font-weight:800}.st-tabs{border-bottom:1px solid var(--glass-border,var(--border));flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px;padding-bottom:10px;display:flex}.st-tabs-group{background:var(--bg2);-webkit-backdrop-filter:var(--glass-blur,blur(28px) saturate(210%));border:1px solid var(--glass-border,var(--border));border-radius:10px;align-items:center;gap:3px;padding:4px;display:inline-flex;box-shadow:0 4px 14px #0000001f}.st-tab-btn{color:var(--st-text-mute);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:6px;padding:4px 10px;font-family:inherit;font-size:11.5px;font-weight:500;transition:all .15s}.st-tab-btn:hover{color:var(--st-text);background:#ffffff0f}.st-tab-btn.active{background:var(--bg3);color:var(--st-text);font-weight:600;box-shadow:0 2px 8px #0003,inset 0 1px #ffffff26}.st-topic-search-wrap{align-items:center;min-width:170px;display:flex;position:relative}.st-topic-search-icon{color:var(--st-text-mute);pointer-events:none;position:absolute;left:9px}.st-topic-search{border:1px solid var(--glass-border,var(--border));background:var(--bg2);width:100%;height:32px;-webkit-backdrop-filter:var(--glass-blur,blur(28px) saturate(210%));color:var(--st-text);border-radius:9px;outline:none;padding:0 26px 0 28px;font-family:inherit;font-size:11.5px;box-shadow:0 2px 8px #00000014}.st-topic-search:focus{border-color:var(--border2);background:var(--bg3);box-shadow:0 0 0 3px #6366f126}.st-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px;display:flex}.st-add-topic-main-btn{background:var(--st-teal);color:#fff;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:34px;min-width:34px;height:34px;padding:0;transition:all .15s;display:inline-flex;box-shadow:0 2px 6px #14b8a64d}.st-add-topic-main-btn:hover{background:var(--st-teal-hover,#0d9488);transform:translateY(-1px)scale(1.04);box-shadow:0 4px 12px #14b8a666}.st-input,.st-select{font-family:var(--font,sans-serif);background:var(--st-panel2);border:1px solid var(--st-border-strong);color:var(--st-text);border-radius:8px;outline:none;height:34px;padding:0 10px;font-size:12px}.st-input:focus,.st-select:focus{border-color:var(--st-teal);background:var(--st-panel)}.st-input::placeholder{color:var(--st-text-mute)}.st-import-wrap{flex-shrink:0;align-items:center;gap:6px;display:inline-flex}.st-import-wrap .st-btn{height:34px;padding:0 10px;font-size:11.5px}.st-topic-list{flex-direction:column;gap:8px;margin-bottom:16px;display:flex}.st-topic-row{background:var(--bg2);-webkit-backdrop-filter:var(--glass-blur,blur(28px) saturate(210%));border:1px solid var(--glass-border,var(--border));box-shadow:var(--glass-shadow);-webkit-user-select:none;user-select:none;border-radius:14px;padding:12px 16px 10px;transition:border-color .2s,box-shadow .2s,transform .2s cubic-bezier(.4,0,.2,1),background-color .2s;position:relative}.st-topic-row:hover{border-color:var(--border2);transform:translateY(-2px);box-shadow:0 12px 32px -4px #00000059,inset 0 1px #ffffff38}.st-topic-row.is-completed{background:#22c55e05;border-color:#22c55e2e}.st-topic-row.dragging,.st-subject-item.dragging{transform:scale(.985);opacity:.4!important;border:1px dashed var(--st-teal)!important;cursor:grabbing!important;background:#14b8a60d!important}.st-topic-row.drag-over,.st-subject-item.drag-over{box-shadow:0 -2px 8px #14b8a626;border-top:2px solid var(--st-teal)!important;background:#14b8a614!important}.st-topic-main{justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;display:flex}.st-topic-left{flex-shrink:0;align-items:center;gap:6px;display:flex}.st-drag-grip{width:18px;height:18px;color:var(--st-text-mute);cursor:grab;opacity:.45;-webkit-user-select:none;user-select:none;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;transition:opacity .15s,color .15s,background-color .15s;display:inline-flex}.st-drag-grip:hover{opacity:1;color:var(--st-teal-fill);background:#14b8a61f}.st-drag-grip:active{cursor:grabbing}.st-topic-check{cursor:pointer;width:16px;height:16px;accent-color:var(--st-teal);border-radius:4px;flex-shrink:0}.st-topic-body{flex-direction:column;flex:1;gap:4px;min-width:0;display:flex}.st-topic-title-row{align-items:center;min-width:0;display:flex}.st-topic-name{color:var(--st-text);text-overflow:ellipsis;white-space:nowrap;font-size:13.5px;font-weight:600;line-height:1.35;overflow:hidden}.st-topic-name.completed{color:var(--st-text-mute);opacity:.75;text-decoration:line-through}.st-topic-name-input{background:var(--st-panel2);border:1px solid var(--st-border-strong);color:var(--st-text);border-radius:6px;outline:none;width:100%;padding:3px 8px;font-size:12.5px}.st-topic-meta{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.st-badge-cat{background:var(--st-panel2);color:var(--st-text-dim);border:1px solid var(--st-border);white-space:nowrap;text-overflow:ellipsis;border-radius:5px;max-width:160px;padding:1.5px 7px;font-size:10.5px;font-weight:500;overflow:hidden}.st-badge-level{text-transform:capitalize;white-space:nowrap;border-radius:5px;padding:1.5px 7px;font-size:10px;font-weight:600}.st-badge-level.high{color:#ef4444;background:#ef444426;border:1px solid #ef444440}.st-badge-level.mid,.st-badge-level.medium{color:#f59e0b;background:#f59e0b26;border:1px solid #f59e0b40}.st-badge-level.low{color:#3b82f6;background:#3b82f626;border:1px solid #3b82f640}.st-topic-controls{flex-shrink:0;align-items:center;gap:8px;display:flex}.st-topic-pct-badge{font-variant-numeric:tabular-nums;background:var(--st-panel2);border:1px solid var(--st-border);text-align:center;-webkit-user-select:none;user-select:none;border-radius:6px;min-width:38px;padding:2px 7px;font-size:11.5px;font-weight:700}.st-topic-pct-badge.completed{background:#22c55e1f;border-color:#22c55e40;color:#22c55e!important}.st-topic-actions{align-items:center;gap:2px;display:flex}.st-topic-actions .st-icon-btn.delete-btn:hover{color:#ef4444;background:#ef44441f}.st-topic-progress-wrap{align-items:center;width:100%;padding-top:4px;padding-bottom:2px;display:flex;position:relative}.st-topic-interactive-bar{-webkit-appearance:none;appearance:none;background:linear-gradient(to right, var(--bar-color,#3d51ad) 0%, var(--bar-color,#3d51ad) var(--progress,0%), #94a3b829 var(--progress,0%), #94a3b829 100%);cursor:pointer;touch-action:pan-x;border:none;border-radius:999px;outline:none;width:100%;height:6px;margin:0;padding:0;transition:height .18s;display:block}.st-topic-row:hover .st-topic-interactive-bar,.st-topic-interactive-bar:hover,.st-topic-interactive-bar:focus{height:8px}.st-topic-interactive-bar::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;border:2.5px solid var(--bar-color,#3d51ad);cursor:grab;opacity:0;background:#fff;border-radius:50%;width:14px;height:14px;transition:opacity .15s,transform .15s;transform:scale(.6);box-shadow:0 1px 4px #00000059}.st-topic-row:hover .st-topic-interactive-bar::-webkit-slider-thumb{opacity:1;transform:scale(1)}.st-topic-interactive-bar:hover::-webkit-slider-thumb{opacity:1;transform:scale(1)}.st-topic-interactive-bar:focus::-webkit-slider-thumb{opacity:1;transform:scale(1)}.st-topic-interactive-bar:active::-webkit-slider-thumb{opacity:1;transform:scale(1)}.st-topic-interactive-bar:active::-webkit-slider-thumb{cursor:grabbing;transform:scale(1.15)}.st-topic-interactive-bar::-moz-range-thumb{border:2.5px solid var(--bar-color,#3d51ad);cursor:grab;opacity:0;background:#fff;border-radius:50%;width:14px;height:14px;transition:opacity .15s,transform .15s;transform:scale(.6);box-shadow:0 1px 4px #00000059}.st-topic-row:hover .st-topic-interactive-bar::-moz-range-thumb{opacity:1;transform:scale(1)}.st-topic-interactive-bar:hover::-moz-range-thumb{opacity:1;transform:scale(1)}.st-topic-interactive-bar:focus::-moz-range-thumb{opacity:1;transform:scale(1)}.st-topic-interactive-bar:active::-moz-range-thumb{opacity:1;transform:scale(1)}.st-topic-interactive-bar:active::-moz-range-thumb{cursor:grabbing;transform:scale(1.15)}@media (max-width:640px){.st-topic-row{border-radius:10px;padding:9px 11px 7px}.st-topic-main{align-items:flex-start;gap:8px}.st-topic-name{white-space:normal;word-break:break-word;font-size:13px;line-height:1.35}.st-topic-controls{gap:4px}.st-topic-pct-badge{min-width:32px;padding:1.5px 5px;font-size:11px}.st-topic-actions .st-icon-btn{width:26px;height:26px}.st-topic-interactive-bar{height:7px}.st-topic-interactive-bar::-webkit-slider-thumb{opacity:1;transform:scale(.9)}.st-topic-interactive-bar::-moz-range-thumb{opacity:1;transform:scale(.9)}}.st-empty-topics{color:var(--st-text-mute);text-align:center;border:1px dashed var(--st-border);border-radius:10px;padding:24px 14px;font-size:12.5px}.st-empty-topics-inner{flex-direction:column;align-items:center;gap:12px;display:flex}.st-empty-text{color:var(--st-text-mute);font-size:12.5px;line-height:1.4}.st-empty-import-actions{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.st-topics-pagination{background:var(--bg2);-webkit-backdrop-filter:var(--glass-blur,blur(28px) saturate(210%));border:1px solid var(--glass-border,var(--border));box-shadow:var(--glass-shadow);border-radius:12px;justify-content:flex-end;align-items:center;gap:10px;margin-top:8px;padding:8px 14px;display:flex}.st-subject-popover-portal{background:var(--st-panel,#13161e);border:1px solid var(--st-border-strong,#fff3);min-width:140px;color:var(--st-text);font-family:var(--font,sans-serif);border-radius:10px;flex-direction:column;gap:2px;padding:5px;animation:.15s cubic-bezier(.16,1,.3,1) stPopIn;display:flex;box-shadow:0 16px 36px #0009}.st-subject-popover-portal .st-menu-item{width:100%;color:var(--st-text);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:6px;align-items:center;gap:8px;padding:6px 10px;font-family:inherit;font-size:12px;font-weight:500;display:flex}.st-subject-popover-portal .st-menu-item:hover{background:var(--st-panel2)}.st-subject-popover-portal .st-menu-item.danger{color:#f87171}.st-subject-popover-portal .st-menu-item.danger:hover{color:#ef4444;background:#ef444426}.st-modal-overlay{-webkit-backdrop-filter:blur(6px);z-index:9999;background:#000000b8;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.st-modal-card{background:var(--st-panel);border:1px solid var(--st-border-strong);width:360px;max-width:96vw;color:var(--st-text);border-radius:14px;padding:20px;box-shadow:0 20px 45px #0000008c}.st-modal-card h3{color:var(--st-text);margin:0 0 14px;font-size:16px;font-weight:700}.st-modal-card .st-input{width:100%;height:38px;margin-bottom:14px}.st-color-swatches{flex-wrap:wrap;gap:8px;margin-bottom:18px;display:flex}.st-color-swatch{cursor:pointer;border:2px solid #0000;border-radius:50%;width:26px;height:26px}.st-color-swatch.selected{box-shadow:0 0 0 2px var(--st-teal);border-color:#fff;transform:scale(1.15)}.st-modal-actions{justify-content:flex-end;gap:8px;display:flex}@keyframes stSpin{to{transform:rotate(360deg)}}.st-sidebar-backdrop,.st-mobile-drawer-trigger-wrap,.st-mobile-drawer-trigger,.st-sidebar-mobile-close{display:none}.st-m-card{background:var(--bg2,#161922);border:1px solid var(--border,#242836);width:100%;color:var(--text,#e8e9ed);border-radius:12px;margin-bottom:12px;padding:10px;font-size:12px;display:none;box-shadow:0 4px 16px #0000001f}[data-theme=light] .st-m-card{color:#0f172a;background:#fff;border-color:#00000014}.st-m-row{justify-content:space-between;align-items:center;display:flex}.st-m-dropdown{color:var(--text,#fff);cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:5px;font-size:13px;font-weight:600;display:flex}[data-theme=light] .st-m-dropdown{color:#000}.st-m-dropdown svg{color:var(--text3,#8b8fa3);transition:transform .15s}.st-m-dropdown.open svg{transform:rotate(180deg)}.st-m-icons{color:var(--text3,#8b8fa3);align-items:center;gap:12px;display:flex}.st-m-icon-btn{color:var(--text3,#8b8fa3);cursor:pointer;background:0 0;border:none;outline:none;justify-content:center;align-items:center;padding:2px;transition:color .15s;display:flex}.st-m-icon-btn:hover,.st-m-icon-btn.active{color:var(--text,#fff)}[data-theme=light] .st-m-icon-btn{color:#64748b}[data-theme=light] .st-m-icon-btn:hover,[data-theme=light] .st-m-icon-btn.active{color:#000}.st-m-search{background:var(--bg3,#0d0f15);border:1px solid var(--border,#242836);border-radius:8px;align-items:center;gap:6px;margin-top:8px;padding:6px 8px;display:none;position:relative}[data-theme=light] .st-m-search{background:#f8fafc;border-color:#00000014}.st-m-search.open{display:flex}.st-m-search-svg{color:var(--text3,#666);flex-shrink:0}.st-m-search input{color:var(--text,#e8e9ed);background:0 0;border:none;outline:none;width:100%;font-family:inherit;font-size:11.5px}[data-theme=light] .st-m-search input{color:#000}.st-m-search input::placeholder{color:var(--text3,#64748b)}.st-m-menu{border-top:1px solid var(--border,#242836);flex-direction:column;gap:2px;margin-top:8px;padding-top:8px;display:none}[data-theme=light] .st-m-menu{border-top-color:#00000014}.st-m-menu.open{display:flex}.st-m-option{color:var(--text2,#8b8fa3);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:6px;justify-content:space-between;align-items:center;padding:6px 8px;font-size:12px;transition:background .15s,color .15s;display:flex}.st-m-option:hover{background:var(--bg3,#0d0f15)}[data-theme=light] .st-m-option:hover{background:#f1f5f9}.st-m-option.active{color:var(--text,#fff);font-weight:600}[data-theme=light] .st-m-option.active{color:#000}.st-m-option .n{color:var(--text3,#64748b);background:var(--st-panel2);border-radius:6px;padding:1px 6px;font-size:10px}.st-m-option.active .n{color:var(--st-teal-fill,#6c8cff);background:#6366f129;font-weight:700}@media (max-width:1024px){.st-header{padding-right:0}.st-layout{grid-template-columns:240px 1fr}}@media (max-width:768px){.st-header{gap:8px;margin-bottom:12px;padding-right:0!important}.st-header-title-wrap{gap:8px}.st-header-icon-wrap{border-radius:8px;width:34px;height:34px}.st-header h1{font-size:18px}.st-header p{font-size:11.5px}.st-layout{background:0 0!important;border:none!important;min-height:0!important;display:block!important;position:relative!important}.st-detail{background:0 0!important;width:100%!important;padding:0!important}.st-mobile-drawer-trigger-wrap{align-items:center!important;width:100%!important;margin-bottom:10px!important;display:flex!important}.st-mobile-drawer-trigger{background:var(--st-panel)!important;border:1px solid var(--st-border)!important;height:36px!important;color:var(--st-text)!important;cursor:pointer!important;width:100%!important;box-shadow:none!important;border-radius:8px!important;justify-content:space-between!important;align-items:center!important;gap:8px!important;padding:0 12px!important;font-family:inherit!important;font-size:12.5px!important;font-weight:600!important;transition:background .15s,border-color .15s!important;display:flex!important}.st-mobile-drawer-trigger:hover,.st-mobile-drawer-trigger:active{background:var(--st-panel2)!important;border-color:var(--st-teal)!important}.st-mobile-trigger-left{flex:1!important;align-items:center!important;gap:8px!important;min-width:0!important;display:flex!important}.st-mobile-trigger-dot{border-radius:50%!important;flex-shrink:0!important;width:8px!important;height:8px!important}.st-mobile-trigger-icon{color:var(--st-teal-fill)!important;flex-shrink:0!important}.st-mobile-trigger-title{white-space:nowrap!important;text-overflow:ellipsis!important;font-size:12.5px!important;font-weight:600!important;overflow:hidden!important}.st-mobile-trigger-right{flex-shrink:0!important;align-items:center!important;gap:6px!important;display:flex!important}.st-mobile-badge-pill{background:var(--st-panel2)!important;border:1px solid var(--st-border)!important;color:var(--st-text-dim)!important;border-radius:6px!important;padding:2px 6px!important;font-size:10.5px!important;font-weight:600!important}.st-mobile-chevron{color:var(--st-text-mute)!important;transition:transform .15s!important}.st-layout.drawer-open .st-mobile-chevron{transform:rotate(180deg)!important}.st-sidebar-backdrop{-webkit-backdrop-filter:blur(3px)!important;z-index:99998!important;opacity:0!important;pointer-events:none!important;background:#00000080!important;transition:opacity .2s!important;display:block!important;position:fixed!important;top:0!important;bottom:0!important;left:0!important;right:0!important}.st-sidebar-backdrop.show{opacity:1!important;pointer-events:auto!important}.st-sidebar{z-index:99999!important;background:var(--st-panel)!important;border-right:1px solid var(--st-border)!important;border-radius:0!important;width:280px!important;max-width:85vw!important;height:100vh!important;max-height:100vh!important;transition:transform .22s!important;position:fixed!important;top:0!important;bottom:0!important;left:0!important;transform:translate(-100%)!important;box-shadow:0 10px 30px #0000004d!important}.st-layout.drawer-open .st-sidebar{transform:translate(0)!important}.st-sidebar-mobile-close{background:var(--st-panel2)!important;border:1px solid var(--st-border)!important;border-radius:6px!important;display:inline-flex!important}.st-sidebar-header{gap:8px!important;padding:10px 12px 8px!important}.st-sidebar-search-input,.st-add-subject-btn-top{height:30px!important;font-size:11.5px!important}.st-sidebar-list{flex:auto!important;max-height:calc(100vh - 150px)!important;padding:4px 0!important;overflow-y:auto!important}.st-subject-item{border-bottom:1px solid var(--st-border)!important;border-left:3px solid #0000!important;border-radius:0!important;margin:0!important;padding:8px 12px!important}.st-subject-item.active{background:var(--st-panel2)!important;border-left-color:var(--st-teal)!important}.st-subject-item .si-name{max-width:120px!important;font-size:12px!important}.st-subject-hero{display:none!important}.st-m-card{display:block!important}.st-tabs,.st-toolbar{display:none!important}.st-empty-topics{border-radius:8px!important;padding:18px 10px!important}.st-topic-list{gap:6px!important;margin-bottom:14px!important}.st-topic-row{background:var(--st-panel)!important;border:1px solid var(--st-border)!important;box-shadow:none!important;border-radius:8px!important;padding:9px 10px 7px!important}.st-topic-row.is-completed{background:#22c55e05!important;border-color:#22c55e33!important}.st-topic-main{align-items:flex-start!important;gap:8px!important;margin-bottom:6px!important}.st-topic-left{gap:6px!important;margin-top:1px!important}.st-drag-grip{display:none!important}.st-topic-check{border-radius:4px!important;width:16px!important;height:16px!important}.st-topic-body{flex:1!important;gap:3px!important;min-width:0!important}.st-topic-name{white-space:normal!important;word-break:break-word!important;font-size:13px!important;line-height:1.3!important}.st-topic-meta{gap:4px!important}.st-badge-cat{border-radius:4px!important;max-width:110px!important;padding:1px 5px!important;font-size:9.5px!important}.st-badge-level{border-radius:4px!important;padding:1px 5px!important;font-size:9px!important}.st-topic-controls{align-items:center!important;gap:3px!important}.st-topic-pct-badge{border-radius:4px!important;min-width:30px!important;padding:1px 5px!important;font-size:10.5px!important;font-weight:700!important}.st-topic-actions .st-icon-btn{border-radius:5px!important;width:26px!important;height:26px!important}.st-topic-progress-wrap{padding-top:4px!important;padding-bottom:2px!important}.st-topic-interactive-bar{height:5px!important}.st-topic-interactive-bar::-webkit-slider-thumb{opacity:1!important;width:13px!important;height:13px!important}.st-topic-interactive-bar::-moz-range-thumb{opacity:1!important;width:13px!important;height:13px!important}.st-topics-pagination{border-radius:8px!important;flex-direction:row!important;justify-content:space-between!important;align-items:center!important;gap:6px!important;padding:6px 10px!important}}.st-form-grid-2{grid-template-columns:1fr 1fr;gap:10px;display:grid}@media (max-width:520px){.st-form-grid-2{grid-template-columns:1fr!important}.st-reorder-group,.st-sidebar-perpage-select{display:none!important}}