:root{
  --bg:#f6f7fb;--surface:#fff;--surface-2:#f9faff;--surface-3:#f1f3f8;--text:#1f2430;--muted:#70788c;--line:#e4e7ef;
  --primary:#5b67f1;--primary-strong:#4652d7;--primary-soft:#eef0ff;--success:#1f9d72;--warning:#d99016;--danger:#d95252;
  --shadow:0 10px 35px rgba(36,42,76,.07);--shadow-sm:0 3px 14px rgba(36,42,76,.06);--radius:18px;--radius-sm:12px;--sidebar:248px;--topbar:72px;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif;
}
:root[data-theme=dark]{--bg:#10131b;--surface:#181c25;--surface-2:#141820;--surface-3:#202531;--text:#edf1f8;--muted:#9ca6ba;--line:#2a3140;--primary:#7b85ff;--primary-strong:#6873ee;--primary-soft:#23274a;--shadow:0 14px 40px rgba(0,0,0,.22);--shadow-sm:0 5px 18px rgba(0,0,0,.2)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);min-height:100vh}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh}.topbar{position:fixed;z-index:60;inset:0 0 auto 0;height:var(--topbar);display:flex;align-items:center;justify-content:space-between;padding:0 24px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(18px)}.brand-wrap{display:flex;align-items:center;gap:12px}.brand{display:flex;gap:11px;align-items:center}.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:11px;background:linear-gradient(145deg,var(--primary),#7d86ff);color:#fff;font-weight:900;box-shadow:0 8px 18px color-mix(in srgb,var(--primary) 30%,transparent)}.brand strong{display:block;font-size:15px;letter-spacing:.2px}.brand small{display:block;color:var(--muted);font-size:10px;margin-top:2px}.topbar-actions{display:flex;align-items:center;gap:9px}.search-trigger{height:40px;min-width:290px;display:flex;align-items:center;gap:9px;padding:0 12px;border:1px solid var(--line);background:var(--surface-2);border-radius:11px;color:var(--muted);text-align:left}.search-trigger kbd{margin-left:auto;font-size:10px;padding:3px 6px;border:1px solid var(--line);border-radius:5px;background:var(--surface);color:var(--muted)}.icon-button,.avatar-button{width:40px;height:40px;border:1px solid var(--line);background:var(--surface);border-radius:11px;display:grid;place-items:center}.avatar-button{border:none;background:var(--primary-soft);color:var(--primary);font-weight:900}.mobile-only{display:none}.sidebar{position:fixed;z-index:50;left:0;top:var(--topbar);bottom:0;width:var(--sidebar);background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column}.sidebar-scroll{padding:20px 12px;overflow:auto}.section-caption{font-size:10px;font-weight:800;letter-spacing:.13em;color:var(--muted);padding:0 11px 9px;margin-top:7px}.nav-item{width:100%;height:43px;border:0;background:transparent;border-radius:11px;display:flex;align-items:center;gap:12px;padding:0 11px;color:var(--muted);font-weight:700;text-align:left;margin-bottom:4px}.nav-item:hover{background:var(--surface-3);color:var(--text)}.nav-item.active{background:var(--primary-soft);color:var(--primary)}.nav-item>span:first-child{width:19px;text-align:center;font-size:17px}.nav-badge{margin-left:auto;min-width:22px;height:20px;padding:0 6px;display:grid;place-items:center;border-radius:999px;background:var(--surface-3);font-size:10px;color:var(--muted)}.nav-badge.accent{background:var(--primary);color:#fff}.sidebar-footer{margin-top:auto;padding:14px 16px 18px;border-top:1px solid var(--line)}.storage-mini{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-bottom:10px}.storage-mini strong{color:var(--text)}.offline-pill{display:inline-flex;align-items:center;gap:6px;font-size:10px;font-weight:800;color:var(--success);background:color-mix(in srgb,var(--success) 10%,transparent);border-radius:999px;padding:5px 8px}.offline-pill i{width:6px;height:6px;border-radius:50%;background:var(--success)}.sidebar-footer small{display:block;color:var(--muted);margin-top:10px;font-size:10px}.scrim{display:none}.main{padding:calc(var(--topbar) + 28px) 34px 60px;margin-left:var(--sidebar);min-height:100vh}.page{max-width:1220px;margin:0 auto}.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:22px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.12em;color:var(--primary);text-transform:uppercase}.page-title{font-size:30px;line-height:1.15;margin:5px 0 7px;letter-spacing:-.03em}.page-subtitle{margin:0;color:var(--muted);font-size:13px}.head-actions{display:flex;gap:8px;flex-wrap:wrap}.button{border:1px solid var(--line);background:var(--surface);border-radius:11px;min-height:38px;padding:0 13px;font-weight:750;display:inline-flex;align-items:center;gap:7px}.button:hover{background:var(--surface-3)}.button.primary{border-color:var(--primary);background:var(--primary);color:#fff}.button.ghost{background:transparent}.button.danger{color:var(--danger);border-color:color-mix(in srgb,var(--danger) 30%,var(--line))}.button.small{min-height:32px;padding:0 10px;font-size:12px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.card-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px 12px}.card-title{font-size:14px;font-weight:850}.card-sub{font-size:11px;color:var(--muted);margin-top:3px}.card-body{padding:0 20px 20px}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin-bottom:16px}.metric{padding:17px 18px}.metric-label{font-size:11px;color:var(--muted);font-weight:700}.metric-value{font-size:27px;font-weight:900;letter-spacing:-.04em;margin-top:6px}.metric-meta{font-size:10px;color:var(--muted);margin-top:4px}.dashboard-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:16px}.dashboard-stack{display:grid;gap:16px}.daily-progress{padding:20px}.progress-row{display:flex;justify-content:space-between;gap:10px;align-items:center;font-size:12px;font-weight:750}.progress-track{height:10px;border-radius:999px;background:var(--surface-3);overflow:hidden;margin:11px 0}.progress-fill{height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--primary),#8a92ff);transition:width .35s ease}.progress-foot{display:flex;justify-content:space-between;color:var(--muted);font-size:10px}.agenda{display:grid;gap:9px}.agenda-item{display:flex;align-items:center;gap:10px;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}.agenda-time{font-size:10px;color:var(--muted);width:52px}.agenda-dot{width:8px;height:8px;border-radius:50%;background:var(--primary)}.agenda-main{min-width:0;flex:1}.agenda-title{font-size:12px;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.agenda-meta{font-size:10px;color:var(--muted);margin-top:3px}.chart-box{height:230px;display:flex;align-items:end;gap:8px;padding:18px 20px 14px}.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:7px;height:100%;justify-content:end}.bar{width:100%;max-width:34px;border-radius:8px 8px 3px 3px;background:linear-gradient(180deg,var(--primary),#8991ff);min-height:4px}.bar-label{font-size:9px;color:var(--muted)}.bar-value{font-size:9px;color:var(--muted)}.heatmap{display:grid;grid-template-columns:repeat(14,1fr);gap:5px;padding:12px 20px 20px}.heat-cell{aspect-ratio:1;border-radius:5px;background:var(--surface-3);position:relative}.heat-cell[data-level="1"]{background:color-mix(in srgb,var(--primary) 20%,var(--surface-3))}.heat-cell[data-level="2"]{background:color-mix(in srgb,var(--primary) 40%,var(--surface-3))}.heat-cell[data-level="3"]{background:color-mix(in srgb,var(--primary) 65%,var(--surface-3))}.heat-cell[data-level="4"]{background:var(--primary)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:13px}.input,.select,.textarea{width:100%;border:1px solid var(--line);background:var(--surface);border-radius:11px;padding:0 12px;outline:none}.input,.select{height:39px}.textarea{padding:11px 12px;min-height:130px;resize:vertical}.input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 13%,transparent)}.field{display:grid;gap:6px}.field label{font-size:11px;color:var(--muted);font-weight:750}.filter-input{flex:1;min-width:190px}.table-list{display:grid;gap:8px}.list-item{display:flex;align-items:center;gap:12px;padding:13px 14px;border:1px solid var(--line);border-radius:13px;background:var(--surface-2)}.list-item:hover{border-color:color-mix(in srgb,var(--primary) 35%,var(--line))}.list-main{flex:1;min-width:0}.list-title{font-size:12px;font-weight:850;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.list-meta{font-size:10px;color:var(--muted);margin-top:4px}.list-actions{display:flex;gap:5px}.icon-mini{width:30px;height:30px;border:1px solid var(--line);border-radius:9px;background:var(--surface);display:grid;place-items:center;font-size:12px}.status{display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:4px 8px;font-size:9px;font-weight:850;white-space:nowrap}.status.due{background:color-mix(in srgb,var(--danger) 10%,transparent);color:var(--danger)}.status.review{background:color-mix(in srgb,var(--warning) 12%,transparent);color:var(--warning)}.status.mastered{background:color-mix(in srgb,var(--success) 11%,transparent);color:var(--success)}.status.neutral{background:var(--surface-3);color:var(--muted)}.tag{display:inline-flex;padding:4px 8px;border-radius:999px;font-size:9px;font-weight:750;background:var(--surface-3);color:var(--muted)}.tag.primary{background:var(--primary-soft);color:var(--primary)}.split{display:flex;gap:8px;align-items:center}.grow{flex:1}.empty{padding:34px 18px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:13px}.empty strong{display:block;color:var(--text);font-size:13px;margin-bottom:5px}.empty p{margin:0;font-size:11px}.review-shell{max-width:850px;margin:0 auto}.review-card{padding:28px;min-height:420px;display:grid;align-content:center}.review-prompt{font-size:13px;color:var(--muted);margin-bottom:10px}.review-question{font-size:28px;line-height:1.45;font-weight:850;white-space:pre-wrap}.review-answer{margin-top:25px;padding:18px;border-radius:14px;background:var(--surface-2);border:1px solid var(--line);white-space:pre-wrap;line-height:1.7;font-size:13px}.review-controls{margin-top:15px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.rating{padding:12px;border:1px solid var(--line);border-radius:11px;background:var(--surface)}.rating strong{display:block;font-size:12px}.rating span{display:block;font-size:9px;color:var(--muted);margin-top:3px}.rating:hover{border-color:var(--primary)}.flash-progress{height:6px;border-radius:99px;background:var(--surface-3);overflow:hidden;margin-bottom:12px}.flash-progress>div{height:100%;background:var(--primary);transition:width .3s}.editor-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.editor-wide{grid-column:1/-1}.modal{width:min(760px,calc(100vw - 24px));max-height:calc(100vh - 24px);overflow:auto;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:0 25px 80px rgba(0,0,0,.25)}.modal-head{position:sticky;top:0;z-index:2;padding:18px 20px;border-bottom:1px solid var(--line);background:var(--surface);display:flex;align-items:center;justify-content:space-between}.modal-title{font-size:16px;font-weight:900}.modal-body{padding:20px}.modal-foot{position:sticky;bottom:0;padding:13px 20px;border-top:1px solid var(--line);background:var(--surface);display:flex;justify-content:flex-end;gap:8px}.modal-layer:not([hidden]){position:fixed;inset:0;z-index:90;background:rgba(8,10,20,.55);display:grid;place-items:center;padding:12px}.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:15px;overflow:auto}.tab{border:0;background:transparent;padding:9px 10px;color:var(--muted);border-bottom:2px solid transparent;font-size:11px;font-weight:800;white-space:nowrap}.tab.active{color:var(--primary);border-bottom-color:var(--primary)}.checkline{display:flex;align-items:center;gap:9px;font-size:12px}.checkline input{accent-color:var(--primary)}.task-item{display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:10px}.task-check{width:22px;height:22px;border:1px solid var(--line);border-radius:7px;background:var(--surface);display:grid;place-items:center}.task-check.done{background:var(--primary);color:#fff;border-color:var(--primary)}.task-item.done .list-title{text-decoration:line-through;color:var(--muted)}.focus-clock{display:grid;justify-items:center;padding:28px}.clock-ring{width:230px;height:230px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--primary) var(--progress,0%),var(--surface-3) 0);position:relative}.clock-ring::after{content:"";position:absolute;inset:11px;border-radius:50%;background:var(--surface)}.clock-inner{position:relative;z-index:1;text-align:center}.clock-time{font-size:50px;font-variant-numeric:tabular-nums;font-weight:900;letter-spacing:-.06em}.clock-phase{color:var(--muted);font-size:11px;margin-top:4px}.focus-controls{display:flex;gap:8px;justify-content:center;margin-top:17px}.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.resource-card{padding:15px;display:flex;flex-direction:column;min-height:150px}.resource-card .list-meta{margin-top:6px}.resource-card .resource-url{font-size:10px;color:var(--primary);word-break:break-all;margin:10px 0 15px}.resource-actions{display:flex;gap:6px;margin-top:auto}.stat-list{display:grid;gap:10px}.stat-row{display:grid;grid-template-columns:100px 1fr 50px;align-items:center;gap:9px;font-size:10px}.stat-row .track{height:8px;border-radius:999px;background:var(--surface-3);overflow:hidden}.stat-row .track i{display:block;height:100%;background:var(--primary);border-radius:inherit}.callout{padding:14px;border-radius:13px;background:var(--primary-soft);color:var(--primary);font-size:11px;line-height:1.65}.danger-zone{border-color:color-mix(in srgb,var(--danger) 24%,var(--line))}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.option-list{display:grid;gap:8px}.option{display:flex;align-items:center;justify-content:space-between;padding:12px;border:1px solid var(--line);border-radius:11px}.option-main strong{font-size:12px;display:block}.option-main span{font-size:10px;color:var(--muted);display:block;margin-top:3px}.switch{width:42px;height:24px;border-radius:99px;background:var(--surface-3);border:1px solid var(--line);padding:2px}.switch i{display:block;width:18px;height:18px;border-radius:50%;background:var(--muted);transition:.2s}.switch.on{background:var(--primary);border-color:var(--primary)}.switch.on i{transform:translateX(18px);background:#fff}.toast-stack{position:fixed;z-index:120;right:18px;bottom:18px;display:grid;gap:8px;max-width:min(360px,calc(100vw - 36px))}.toast{padding:11px 13px;border:1px solid var(--line);background:var(--surface);border-radius:11px;box-shadow:var(--shadow);font-size:11px}.command{width:min(700px,calc(100vw - 24px))}.search-results{display:grid;gap:6px;max-height:55vh;overflow:auto}.search-result{padding:12px;border:1px solid var(--line);border-radius:11px;cursor:pointer}.search-result:hover{border-color:var(--primary)}.search-result strong{font-size:12px}.search-result small{display:block;color:var(--muted);margin-top:4px}.muted{color:var(--muted)}.nowrap{white-space:nowrap}.hidden{display:none!important}
@media(max-width:1050px){.metric-grid{grid-template-columns:repeat(2,1fr)}.dashboard-grid,.two-col,.settings-grid{grid-template-columns:1fr}.resource-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){:root{--sidebar:258px}.mobile-only{display:grid}.topbar{padding:0 14px}.search-trigger{min-width:0;width:40px;font-size:0;justify-content:center}.search-trigger kbd{display:none}.sidebar{transform:translateX(-105%);transition:transform .2s ease;box-shadow:20px 0 50px rgba(0,0,0,.15)}.sidebar.open{transform:none}.scrim.open{display:block;position:fixed;z-index:45;inset:var(--topbar) 0 0;background:rgba(0,0,0,.35)}.main{margin-left:0;padding:calc(var(--topbar) + 21px) 15px 40px}.page-title{font-size:25px}}
@media(max-width:650px){.metric-grid{grid-template-columns:repeat(2,1fr);gap:9px}.metric{padding:13px}.metric-value{font-size:22px}.page-head{align-items:flex-start;flex-direction:column}.head-actions{width:100%}.head-actions .button{flex:1;justify-content:center}.editor-grid{grid-template-columns:1fr}.resource-grid{grid-template-columns:1fr}.review-card{padding:20px;min-height:380px}.review-question{font-size:23px}.review-controls{grid-template-columns:repeat(2,1fr)}.chart-box{height:190px;padding:14px}.heatmap{gap:3px;padding:10px 14px 15px}.topbar-actions{gap:6px}.brand small{display:none}}

.overdue{color:var(--danger);font-weight:800}.toast[data-type="bad"]{border-color:color-mix(in srgb,var(--danger) 35%,var(--line))}.toast[data-type="warn"]{border-color:color-mix(in srgb,var(--warning) 35%,var(--line))}