/* Personal reference refinement: task-first hierarchy, readable Chinese, quiet states. */
:root {
  --ui-ink: var(--brand-ink);
  --ui-secondary: var(--brand-muted);
  --ui-accent: var(--brand-action);
  --ui-soft: var(--brand-soft);
  --ui-border: var(--brand-border);
  --ui-paper: var(--brand-porcelain);
  --ui-plan: var(--brand-gold-ink);
  --ui-done: var(--brand-action);
  --ui-fast: 150ms;
}
body { min-width: 320px; color: var(--ui-ink); }
::selection { background: var(--brand-border); color: var(--brand-ink); }
input, textarea { caret-color: var(--ui-accent); }
* { scrollbar-color: var(--brand-border-strong) transparent; scrollbar-width: thin; }
a { text-underline-offset: 3px; }
.skip-link { position: fixed; left: 14px; top: -90px; z-index: 300; background: var(--ui-accent); color: white; padding: 12px 18px; border-radius: 8px; }
.skip-link:focus { top: 12px; }
:focus-visible { outline: 2px solid var(--ui-accent); outline-offset: 3px; }
.btn, .pc-person, .pc-day, .tab, .segmented button { transition: background-color var(--ui-fast) ease-out, border-color var(--ui-fast) ease-out; }
.btn:active:not(:disabled) { background: var(--brand-soft); }
.btn.primary:active:not(:disabled) { background: var(--brand-ink); }
.page-eyebrow, .eyebrow, .sidebar-title > span { display: none; }
.sidebar-title { margin-block: 18px 24px; letter-spacing: 0; }
.sidebar-workspace .tab { display: flex; align-items: center; gap: 10px; font-size: 14px; min-height: 44px; }
.sidebar-workspace .tab span { width: 20px; height: 20px; flex: 0 0 20px; }
.sidebar-workspace .tab svg { display: block; width: 20px; height: 20px; }
body.sidebar-collapsed .sidebar-workspace .tab { justify-content: center; gap: 0; }
.topbar { margin-bottom: 24px; min-height: 56px; }
.page-title-line, #pageTitle { font-size: 22px; letter-spacing: 0; }
.subtitle, .current-user { font-size: 13px; color: var(--ui-secondary); }
.btn { font-size: 14px; min-height: 38px; }
.side-nav-item { font-size: 13px; min-height: 40px; }
.sidebar-foot { color: var(--ui-secondary); }
.pc-layout { grid-template-columns: 192px minmax(0, 1fr); gap: 24px; }
.pc-roster { padding: 16px 10px; background: var(--ui-paper); }
.pc-roster-heading h2 { font-size: 15px; }
.pc-roster-heading > span { font-size: 12px; color: var(--ui-secondary); }
.pc-person-search { margin-block: 14px 10px; }
.pc-person-search input { font-size: 14px; min-height: 40px; background: white; }
input::placeholder, textarea::placeholder { color: var(--ui-secondary); opacity: 1; }
.pc-person { min-height: 62px; padding: 10px 8px; color: var(--ui-ink); }
.pc-person > span:nth-child(2) { min-width: 0; }
.pc-person b { font-size: 14px; overflow-wrap: anywhere; }
.pc-person small { font-size: 12px; color: var(--ui-secondary); }
.pc-avatar { width: 32px; height: 32px; background: var(--brand-soft); color: var(--ui-accent); font-size: 12px; }
.pc-person.active { background: var(--brand-soft); border-color: var(--brand-border-strong); }
.pc-person.active .pc-avatar { background: var(--ui-accent); }
.pc-person-header, .pc-section-header { margin-bottom: 18px; align-items: flex-start; flex-wrap: wrap; }
.pc-person-header h2 { margin: 0 0 4px; font-size: 26px; letter-spacing: 0; color: var(--ui-ink); }
.pc-person-header h2 span { font-size: 13px; color: var(--ui-secondary); }
.pc-person-header p, .pc-section-header p { font-size: 14px; color: var(--ui-secondary); line-height: 1.6; }
.pc-section-header h2 { margin: 0 0 6px; font-size: 24px; font-weight: 600; color: var(--ui-ink); }
.pc-month-controls { gap: 6px; }
.pc-month-controls .btn { min-width: 38px; height: 38px; font-size: 15px; }
.pc-month-controls input { height: 38px; width: 150px; font-size: 14px; }
.pc-stats { background: transparent; border: 0; border-block: 1px solid var(--ui-border); border-radius: 0; margin-bottom: 18px; }
.pc-stats > div { padding: 14px 16px; border-color: var(--ui-border); }
.pc-stats > div:first-child { padding-left: 0; }
.pc-stats span { font-size: 13px; color: var(--ui-secondary); }
.pc-stats strong { font-size: 25px; margin: 2px 0; color: var(--ui-ink); font-weight: 600; line-height: 1.25; }
.pc-stats small { font-size: 12px; color: var(--ui-secondary); }
.pc-filter-bar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.pc-filter-bar > span { font-size: 12px; color: var(--ui-secondary); }
.segmented { display: inline-flex; background: var(--brand-soft); border: 1px solid var(--ui-border); border-radius: 8px; padding: 3px; gap: 3px; }
.segmented button { background: transparent; border: 0; border-radius: 5px; color: var(--ui-secondary); font-size: 13px; padding: 7px 12px; min-height: 34px; cursor: pointer; }
.segmented button.active { background: white; color: var(--ui-accent); font-weight: 600; }
.pc-calendar-layout { grid-template-columns: minmax(0, 1fr) 270px; gap: 18px; }
.pc-calendar-panel, .pc-day-panel, .pc-table-panel { border-color: var(--ui-border); border-radius: 12px; }
.pc-calendar-heading { padding: 14px 16px; }
.pc-calendar-heading h3 { color: var(--ui-ink); font-size: 16px; }
.pc-calendar-legend { font-size: 12px; color: var(--ui-secondary); }
.pc-weekdays span { font-size: 12px; color: var(--ui-secondary); padding: 9px 0; }
.pc-day { height: 96px; padding: 7px 5px; gap: 5px; color: var(--ui-ink); }
.pc-day-number { font-size: 13px; }
.pc-day-number small { font-size: 10px; color: var(--ui-accent); }
.pc-event { font-size: 11px; border-left-width: 1px; color: var(--ui-plan); background: var(--brand-soft); }
.pc-event.done { color: var(--ui-done); background: var(--brand-soft); }
.pc-day-records > small { font-size: 11px; color: var(--ui-secondary); }
.pc-day.selected { box-shadow: inset 0 0 0 2px var(--ui-accent); background: var(--brand-soft); }
.pc-calendar-foot { font-size: 12px; color: var(--ui-secondary); padding: 12px 16px; }
.pc-day-panel { display: block; padding: 18px; background: var(--ui-paper); position: sticky; top: 16px; }
.pc-day-heading h3 { font-size: 20px; color: var(--ui-ink); margin: 0 0 16px; }
.pc-day-heading small { font-size: 12px; color: var(--ui-secondary); }
.pc-add-work { font-size: 14px; min-height: 42px; }
.pc-day-content { display: grid; grid-template-columns: 1fr; margin-top: 12px; max-height: 60vh; gap: 0; }
.pc-work-card { border: 0; border-bottom: 1px solid var(--ui-border); border-radius: 0; padding: 16px 0; background: transparent; }
.pc-work-card:last-child { border-bottom: 0; }
.pc-work-card h4 { font-size: 15px; color: var(--ui-ink); line-height: 1.6; }
.pc-work-card p, .pc-work-notes { font-size: 13px; color: var(--ui-secondary); line-height: 1.7; overflow-wrap: anywhere; }
.pc-work-top small, .pc-work-card > small { font-size: 12px; color: var(--ui-secondary); }
.pc-status { font-size: 12px; padding: 3px 7px; }
.pc-status.done { color: var(--ui-done); background: var(--brand-soft); }
.pc-status.planned { color: var(--ui-plan); background: var(--brand-soft); }
.pc-text-button, .pc-text-button.muted { font-size: 13px; color: var(--ui-accent); min-height: 34px; }
.pc-empty { color: var(--ui-secondary); }
.pc-empty h3, .pc-empty h4 { color: var(--ui-ink); font-size: 15px; }
.pc-empty p { font-size: 13px; }
.pc-empty > span { display: none; }
.pc-footnote, .pc-note { font-size: 12px; color: var(--ui-secondary); line-height: 1.8; }
.pc-panel-heading h3 { font-size: 16px; color: var(--ui-ink); }
.pc-table { font-size: 14px; font-variant-numeric: tabular-nums; }
.pc-table th { font-size: 13px; color: var(--ui-secondary); }
.pc-table td { color: var(--ui-ink); overflow-wrap: anywhere; }
.pc-table td small, .pc-panel-heading h3 small { font-size: 12px; color: var(--ui-secondary); }
.pc-name-button { font-size: 14px; color: var(--ui-ink); }
.pc-detail-filters select, .pc-table select { font-size: 14px; min-height: 38px; }
.pc-table-empty { color: var(--ui-secondary) !important; }
.pc-allocation-toolbar { flex-wrap: wrap; margin-top: 18px; }
.pc-allocation-search { flex: 1; min-width: 180px; }
.pc-allocation-search input { width: 100%; font-size: 14px; min-height: 40px; padding: 8px 12px; }
.pc-search-empty { padding: 8px; font-size: 13px; color: var(--ui-secondary); }
.pc-loading { padding: 60px 24px; min-height: 320px; color: var(--ui-secondary); display: flex; align-items: flex-start; justify-content: center; gap: 10px; }
.pc-loading-mark { width: 18px; height: 18px; border: 2px solid var(--ui-border); border-top-color: var(--ui-accent); border-radius: 50%; animation: work-loading 900ms linear infinite; }
@keyframes work-loading { to { transform: rotate(360deg); } }
.detail-header { background: var(--ui-paper); padding-right: 64px; }
.detail-header h2 { font-size: 24px; letter-spacing: 0; }
.detail-header p { color: var(--ui-secondary); font-size: 14px; line-height: 1.7; }
.pc-work-form label { font-size: 14px; color: var(--ui-ink); }
.pc-work-form input, .pc-work-form textarea, .pc-work-form select { font-size: 16px; min-height: 44px; }
.pc-work-form small { font-size: 12px; color: var(--ui-secondary); }
.pc-discard-prompt { padding: 16px; background: var(--brand-soft); border-radius: 8px; color: var(--ui-plan); }
.pc-discard-prompt p { margin: 0 0 12px; }
.pc-work-form [aria-invalid="true"] { border-color: var(--brand-ink); }
.detail-close { width: 40px; height: 40px; }
.workspace-overview { background: transparent; border: 0; padding: 0; }
.overview-heading h2 { font-size: 18px; }
.kpis { margin: 16px 0 0; border-bottom: 1px solid var(--ui-border); }
.kpi { padding: 14px 20px; }
.kpi-value { font-size: 27px; }
.kpi-label, .kpi-note { font-size: 12px; color: var(--ui-secondary); }
.toast { max-width: calc(100vw - 32px); font-size: 14px; }
body.sidebar-collapsed .main-shell { margin-left: 64px; }
@media (max-width: 1350px) {
  .pc-layout { grid-template-columns: 178px minmax(0, 1fr); gap: 18px; }
  .pc-calendar-layout { grid-template-columns: minmax(0, 1fr); }
  .pc-day-panel { position: static; }
  .pc-day-content { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; max-height: none; }
  .pc-add-work { width: auto; }
}
@media (max-width: 1000px) {
  .pc-layout { grid-template-columns: minmax(0, 1fr); }
  .pc-person { flex-basis: 174px; }
  .pc-person-list { max-height: none; }
  .pc-stats > div { padding: 12px; }
}
@media (max-width: 680px) {
  .sidebar, body.sidebar-collapsed .sidebar { position: static; width: 100%; padding: 10px 12px; border: 0; border-bottom: 1px solid var(--ui-border); box-shadow: none; }
  .sidebar-brand, .sidebar-title, .sidebar-toggle, .sidebar-foot, #workspaceSideNav { display: none !important; }
  .sidebar-workspace, body.sidebar-collapsed .sidebar-workspace { padding: 0; margin: 0; }
  .sidebar-workspace .tabs, body.sidebar-collapsed .sidebar-workspace .tabs { display: grid; width: 100%; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px; }
  .sidebar-workspace .tab, body.sidebar-collapsed .sidebar-workspace .tab { justify-content: center; font-size: 13px; height: 44px; gap: 6px; padding: 8px 4px; }
  .sidebar-workspace .tab span { display: none; }
  .side-nav, body.sidebar-collapsed .side-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; margin: 6px 0 0; }
  .side-nav > .side-section-label, .side-nav > [data-route="schedule"], .side-nav > [data-route="monthly"] { display: none; }
  .side-nav > .side-nav-item, body.sidebar-collapsed .side-nav > .side-nav-item { display: inline-flex; align-items: center; white-space: nowrap; font-size: 13px; width: auto; min-height: 40px; padding: 8px; }
  .side-nav > .side-nav-item .side-icon { display: none; }
  body.sidebar-collapsed .side-nav > .side-nav-item > span:nth-child(2) { display: inline; }
  .side-nav > [data-route="schedule"], .side-nav > [data-route="monthly"], body.sidebar-collapsed .side-nav > [data-route="schedule"], body.sidebar-collapsed .side-nav > [data-route="monthly"] { display: none; }
  .main-shell, body.sidebar-collapsed .main-shell, body:not(.sidebar-collapsed) .main-shell, .schedule-view-active .main-shell { margin: 0; padding: 20px 16px 32px; }
  body[data-view="calendar"] .main-shell { padding-inline: 16px; }
  .topbar { margin-bottom: 20px; }
  .page-title-line, #pageTitle { font-size: 22px; }
  .current-user { text-align: left; }
  .actions { justify-content: flex-start; }
  .pc-person-header h2 { font-size: 24px; }
  .pc-person-header p { font-size: 14px; }
  .pc-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pc-stats > div:first-child { padding-left: 12px; }
  .pc-stats strong { font-size: 23px; }
  .pc-month-controls input { width: 150px; font-size: 16px; }
  .pc-month-controls .btn, .pc-month-controls input, .btn, .pc-text-button { min-height: 44px; height: auto; }
  .pc-person-search input, .pc-allocation-search input, .pc-detail-filters select { font-size: 16px; min-height: 44px; }
  .pc-day { height: 80px; padding: 6px 3px; }
  .pc-day-number { font-size: 13px; }
  .pc-event { font-size: 11px; }
  .pc-day-records > small { font-size: 10px; }
  .pc-calendar-heading h3 { font-size: 16px; }
  .pc-calendar-legend { font-size: 12px; }
  .pc-day-content { display: block; }
  .pc-add-work { width: 100%; }
  .pc-allocation-toolbar { align-items: stretch; }
  .pc-table { min-width: 620px; }
  .pc-panel-heading { padding: 16px; }
  .pc-stats span, .pc-stats small { font-size: 12px; }
  .detail-header, .detail-body { padding: 20px; }
  .detail-header { padding-right: 64px; }
  .resource-sidebar { width: min(300px, 90vw); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
  .pc-loading-mark { border-style: dotted; }
}