.activity {
  --heat-0:var(--surface3);
  --heat-1:#523565;
  --heat-2:#8855ad;
  --heat-3:#bc7bd3;
  --heat-4:#edade1;
  position:relative;
  container-type:inline-size;
}
:root[data-theme=light] .activity {
  --heat-0:#edf0f4;
  --heat-1:#efdef7;
  --heat-2:#d8afea;
  --heat-3:#b378cf;
  --heat-4:#824aa5;
}
.today-grid {align-items:stretch}
.today-column {min-width:0;display:flex;flex-direction:column}
.today-column>.activity {flex:1;display:flex;flex-direction:column;justify-content:center}
.today-grid>.journal {display:flex;flex-direction:column}
.journal .daily-goal {margin-bottom:24px}
.journal>.activity-week {margin-top:auto}
.journal .form-row {margin-top:18px}
.journal fieldset {margin:18px 0}
.journal #log-note {height:140px}
.journal .form-error:empty {display:none}
.journal>.activity-week {padding:18px 20px}
.journal .activity-week-stats {margin:12px 0 16px}
.journal .activity-week-stats strong {font-size:28px}
.journal .activity-recent {margin-top:14px;padding-top:12px}
.journal .activity-history-link {margin-top:12px}
.activity-main {min-width:0;width:100%;padding:3px 0}
.activity-eyebrow {font-size:10px;letter-spacing:1.7px;color:var(--accent);margin-bottom:5px}
.activity-main .panel-top>span {white-space:nowrap}
.activity-main:has(.activity-scroll[data-scrollable="false"]) .activity-scroll-hint {display:none}
.activity-summary {margin-top:10px;font-size:13px;color:var(--muted)}
.activity-summary strong {color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}
.activity-summary>span {margin:0 8px;color:var(--faint)}
.activity-calendar {
  --heat-gap:3px;
  --heat-axis-width:14px;
  --heat-axis-gap:8px;
  /* 周数由 calendar 持有，星期轴和日期格共用尺寸；6px 为滚动区两侧的描边留白。 */
  --heat-size:clamp(12px,calc((100cqw - var(--heat-axis-width) - var(--heat-axis-gap) - 6px - (var(--heat-weeks,54) - 1)*var(--heat-gap))/var(--heat-weeks,54)),28px);
  display:flex;
  align-items:flex-start;
  gap:var(--heat-axis-gap);
  width:100%;
  min-width:0;
  margin:24px 0 18px;
}
.activity-weekdays {display:grid;grid-template-rows:repeat(7,var(--heat-size));gap:var(--heat-gap);padding-top:30px;color:var(--faint);font-size:11px;line-height:var(--heat-size);text-align:center;flex:0 0 var(--heat-axis-width)}
.activity-weekdays span:nth-child(1) {grid-row:1}
.activity-weekdays span:nth-child(2) {grid-row:3}
.activity-weekdays span:nth-child(3) {grid-row:5}
.activity-weekdays span:nth-child(4) {grid-row:7}
.activity-scroll {
  flex:1;
  min-width:0;
  max-width:100%;
  overflow-x:auto;
  overflow-y:hidden;
  padding:3px;
  scroll-padding-inline:3px;
  overscroll-behavior-inline:contain;
  scrollbar-width:thin;
  scrollbar-color:color-mix(in srgb,var(--accent) 40%,var(--surface3)) transparent;
}
.activity-scroll::-webkit-scrollbar {height:6px}
.activity-scroll::-webkit-scrollbar-thumb {border-radius:6px;background:color-mix(in srgb,var(--accent) 40%,var(--surface3))}
.activity-scroll::-webkit-scrollbar-track {background:transparent}
.activity-scroll:focus-visible {outline:1px solid var(--accent);outline-offset:2px;border-radius:4px}
.activity-grid {min-width:0;flex:none;width:calc(var(--heat-weeks)*var(--heat-size) + (var(--heat-weeks) - 1)*var(--heat-gap))}
.activity-months {display:grid;grid-template-columns:repeat(var(--heat-weeks),minmax(0,1fr));gap:var(--heat-gap);height:27px;font-size:11px;color:var(--faint);line-height:18px}
.activity-months span {white-space:nowrap}
.activity .heatmap {display:grid;grid-template-rows:repeat(7,var(--heat-size));grid-template-columns:repeat(var(--heat-weeks),var(--heat-size));grid-auto-flow:column;gap:var(--heat-gap);margin:0}
.activity .day-cell {width:var(--heat-size);height:var(--heat-size);min-width:0;aspect-ratio:1;padding:0;border-radius:2px;border:1px solid color-mix(in srgb,var(--line) 45%,transparent);background:var(--heat-0);transition:filter .15s,transform .15s}
.activity [data-level="1"] {background:var(--heat-1)}
.activity [data-level="2"] {background:var(--heat-2)}
.activity [data-level="3"] {background:var(--heat-3)}
.activity [data-level="4"] {background:var(--heat-4)}
.activity .day-placeholder {background:none;border:0;visibility:hidden}
.activity .day-cell.today {outline:1px solid var(--accent);outline-offset:2px}
.activity button.day-cell:hover {filter:brightness(1.08);transform:translateY(-1px)}
.activity button.day-cell:focus-visible {outline:2px solid var(--ink);outline-offset:2px}
.activity-tooltip {position:absolute;z-index:30;max-width:calc(100% - 24px);padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:var(--ink);color:var(--bg);box-shadow:0 5px 20px #0003;pointer-events:none;white-space:nowrap;font-size:12px;font-variant-numeric:tabular-nums}
.activity .heatmap-caption {font-size:12px;gap:10px;align-items:center}
.activity-legend {display:flex;align-items:center;gap:4px;white-space:nowrap}
.activity .activity-legend i {display:inline-block;width:11px;height:11px;border-radius:2px;background:var(--heat-0);margin:0}
.activity .activity-legend [data-level="1"] {background:var(--heat-1)}
.activity .activity-legend [data-level="2"] {background:var(--heat-2)}
.activity .activity-legend [data-level="3"] {background:var(--heat-3)}
.activity .activity-legend [data-level="4"] {background:var(--heat-4)}
.activity-week {min-width:0;padding:22px 24px;background:linear-gradient(135deg,var(--aura),transparent),var(--surface2);border:1px solid var(--line);border-radius:14px}
.activity-week-header {display:flex;justify-content:space-between;align-items:center;gap:12px}
.activity-week-header h3 {font-size:16px;font-weight:600}
.activity-week-header>span {color:var(--faint);font-size:11px;white-space:nowrap}
.activity-week-stats {display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:16px 0 20px}
.activity-week-stats>div+div {border-left:1px solid var(--line);padding-left:24px}
.activity-week-stats strong {display:block;font-size:32px;font-weight:600;line-height:1.2;letter-spacing:-1px;font-variant-numeric:tabular-nums}
.activity-week-stats small {font-size:12px;color:var(--muted);letter-spacing:0;font-weight:400}
.activity-week-stats span {font-size:12px;color:var(--muted)}
.activity-week-days {display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.week-day {display:flex;flex-direction:column;align-items:center;gap:7px;color:var(--faint);font-size:11px}
.week-day i {display:grid;place-items:center;width:27px;height:27px;background:var(--surface);border:1px solid var(--line);border-radius:50%;font-style:normal;font-size:14px}
.week-day.is-done i {background:var(--button-gradient);border-color:transparent;color:white}
.week-day.is-today i {outline:1px solid var(--accent);outline-offset:3px}
.week-day.is-future {opacity:.45}
.activity-recent {margin-top:20px;padding-top:15px;border-top:1px solid var(--line)}
.activity-recent-top {display:flex;justify-content:space-between;gap:10px;font-size:11px;color:var(--faint)}
.activity-recent-top>span {color:var(--muted)}
.activity-recent p {font-size:13px;line-height:1.8;margin-top:7px;overflow-wrap:anywhere;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}
.activity-history-link {display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--accent);margin-top:16px}
@container (max-width:360px) {
  .activity-calendar {--heat-axis-gap:6px}
  .activity .panel-top {flex-wrap:wrap;gap:8px 12px}
  .activity .panel-top>div {flex:0 0 100%}
  .activity-tooltip {white-space:normal;line-height:1.6}
}
@media (max-width:620px) {
  .activity-week {padding:20px}
}
@media (max-width:350px) {
  .activity-tooltip {font-size:11px;padding:8px}
}
@media (prefers-reduced-motion:reduce) {
  .activity .day-cell {transition:none}
}