.changelog-panel {
  padding: 28px 36px 36px;
}

#changelogContent {
  max-width: 1120px;
  margin: 0 auto;
  color: var(--ink);
}

.changelog-intro,
.changelog-intro-copy,
.changelog-card header,
.changelog-month-heading {
  display: flex;
  align-items: center;
}

.changelog-intro {
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.changelog-intro-copy { gap: 14px; }
.changelog-intro-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: #246dbe;
}
.changelog-intro-icon svg { width: 24px; height: 24px; }
.changelog-intro h2 { margin: 0 0 5px; font-size: 17px; font-weight: 650; }
.changelog-intro p { margin: 0; color: var(--muted); font-size: 12px; }
.changelog-latest-date { text-align: right; line-height: 1.8; }
.changelog-latest-date time { display: block; color: #536276; }

.changelog-layout {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  align-items: start;
  gap: 40px;
}
.changelog-nav {
  position: sticky;
  top: calc(var(--topbar-height) + 24px);
  display: grid;
  gap: 22px;
}
.changelog-nav-year { display: grid; gap: 4px; }
.changelog-nav-year > span {
  margin: 0 10px 9px;
  color: #687789;
  font-size: 12px;
  font-weight: 600;
}
.changelog-nav a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 9px 10px;
  border-radius: 6px;
  color: #5d6a7b;
  font-size: 13px;
  text-decoration: none;
}
.changelog-nav a small { font-size: 11px; opacity: 0.75; }
.changelog-nav a:hover { background: var(--surface-soft); }
.changelog-nav a[aria-current="true"] { background: var(--accent-soft); color: #246dbe; font-weight: 600; }
.changelog-nav a:focus-visible,
.changelog-status button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.changelog-timeline { min-width: 0; }
.changelog-year + .changelog-year { margin-top: 36px; }
.changelog-year-title { display: flex; align-items: baseline; gap: 8px; margin: 0 0 20px; font-size: 25px; font-weight: 650; letter-spacing: -0.6px; }
.changelog-year-title > span { font-size: 12px; font-weight: 400; color: var(--muted); }
.changelog-month { scroll-margin-top: calc(var(--topbar-height) + 24px); }
.changelog-month + .changelog-month { margin-top: 30px; }
.changelog-month:focus { outline: none; }
.changelog-month:focus-visible .changelog-month-heading { outline: 2px solid var(--accent); outline-offset: 5px; }
.changelog-month-heading { gap: 14px; margin-bottom: 18px; }
.changelog-month-heading h3 { display: flex; align-items: baseline; gap: 5px; margin: 0; font-size: 18px; font-weight: 600; }
.changelog-month-heading h3 span { font-size: 12px; color: #637084; font-weight: 400; }
.changelog-month-heading > span { color: var(--muted); font-size: 11px; }
.changelog-month-heading::after { content: ""; height: 1px; flex: 1; background: var(--line); }
.changelog-days { list-style: none; padding: 0; margin: 0; }
.changelog-day { display: grid; grid-template-columns: 48px minmax(0, 1fr); position: relative; gap: 22px; padding-bottom: 20px; }
.changelog-day::before { content: ""; position: absolute; left: 57px; top: 21px; bottom: -21px; width: 1px; background: var(--line); }
.changelog-day:last-child::before { bottom: 20px; }
.changelog-day::after { content: ""; position: absolute; left: 54px; top: 20px; width: 7px; height: 7px; border-radius: 50%; background: #c3cedb; box-shadow: 0 0 0 4px #fff; }
.changelog-day.is-latest::after { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.changelog-date { display: flex; align-items: baseline; gap: 4px; padding-top: 12px; color: #607086; font-variant-numeric: tabular-nums; }
.changelog-date strong { font-size: 21px; font-weight: 550; }
.changelog-date span { font-size: 10px; }
.is-latest .changelog-date { color: #246dbe; }
.changelog-card { min-width: 0; padding: 17px 20px; margin-left: 9px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.is-latest .changelog-card { border-color: #cddff3; background: linear-gradient(115deg, #f5f9ff, #fff 72%); }
.changelog-card header { flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.changelog-card h4 { margin: 0; font-size: 14px; font-weight: 600; line-height: 1.6; }
.changelog-latest-badge { padding: 2px 7px; border-radius: 4px; background: #e5f0ff; color: #246dbe; font-size: 10px; line-height: 1.5; }
.changelog-changes { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; }
.changelog-changes li { display: grid; grid-template-columns: 36px minmax(0, 1fr); align-items: start; gap: 10px; font-size: 12px; line-height: 1.85; color: #526174; overflow-wrap: anywhere; }
.changelog-tag { display: inline-block; padding: 1px 4px; border-radius: 4px; font-size: 10px; line-height: 1.8; text-align: center; margin-top: 1px; white-space: nowrap; }
.changelog-tag[data-kind="feature"] { color: #267157; background: #eaf6f0; }
.changelog-tag[data-kind="improvement"] { color: #356caa; background: #edf3fc; }
.changelog-tag[data-kind="fix"] { color: #946a29; background: #fbf3e6; }
.changelog-end { margin: 12px 0 0 79px; text-align: center; color: var(--muted); font-size: 11px; }
.changelog-status { display: grid; justify-items: center; align-content: center; gap: 14px; min-height: 300px; text-align: center; }
.changelog-status h2 { margin: 0; font-size: 15px; }
.changelog-status p { margin: 0; font-size: 13px; color: var(--muted); }
.changelog-status-icon { color: var(--accent); font-size: 30px; }
.changelog-loader { width: 22px; height: 22px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: changelog-spin 0.8s linear infinite; }
@keyframes changelog-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .changelog-loader { animation: none; } }

@media (max-width: 980px) {
  .settings-changelog-page .app-shell { padding: 0; }
  .settings-changelog-page .app-sidebar { position: static; width: auto; }
  .settings-changelog-page .sidebar-brand { justify-content: flex-start; gap: 10px; padding: 0 14px; }
  .settings-changelog-page .sidebar-brand strong { display: block; }
  .settings-changelog-page :is(.sidebar-label, .sidebar-summary-card, .sidebar-collapse-button) { display: none; }
  .settings-changelog-page .sidebar-nav { display: flex; gap: 4px; padding: 8px; }
  .settings-changelog-page :is(.sidebar-nav-button, .sidebar-nav-link) { flex: 1; width: auto; min-width: 0; min-height: 36px; justify-content: center; padding: 7px 4px; font-size: 12px; text-align: center; }
  .settings-changelog-page :is(.sidebar-nav-button, .sidebar-nav-link) > span { display: none; }
  .settings-changelog-page .model-config-page { margin-left: 12px; margin-right: 12px; }
  .settings-changelog-page .settings-tab { white-space: nowrap; }
  .changelog-month { scroll-margin-top: 20px; }
  .changelog-panel { padding: 24px 20px; }
  .changelog-layout { grid-template-columns: 100px minmax(0, 1fr); gap: 20px; }
}
@media (max-width: 640px) {
  .changelog-panel { padding: 20px 14px; }
  .changelog-intro { align-items: flex-start; flex-direction: column; gap: 12px; padding-bottom: 20px; margin-bottom: 18px; }
  .changelog-latest-date { display: flex; flex-wrap: wrap; gap: 8px; text-align: left; }
  .changelog-layout { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .changelog-nav { position: static; display: flex; overflow-x: auto; padding-bottom: 4px; gap: 18px; }
  .changelog-nav-year { display: flex; align-items: center; gap: 4px; }
  .changelog-nav-year > span { margin: 0 4px 0 0; white-space: nowrap; }
  .changelog-nav a { white-space: nowrap; padding: 8px 10px; }
  .changelog-nav a small { display: none; }
  .changelog-year-title { font-size: 22px; }
  .changelog-day { grid-template-columns: 34px minmax(0, 1fr); gap: 12px; padding-bottom: 16px; }
  .changelog-day::before { left: 39px; }
  .changelog-day::after { left: 36px; }
  .changelog-date strong { font-size: 18px; }
  .changelog-card { padding: 14px 12px; margin-left: 5px; }
  .changelog-card h4 { font-size: 13px; }
  .changelog-changes li { gap: 7px; grid-template-columns: 32px minmax(0, 1fr); }
  .changelog-end { margin-left: 46px; line-height: 1.8; }
}