html[data-theme="dark"] {
  background: #0c1220;
}

html {
  scrollbar-gutter: stable;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme]) {
    background: #0c1220;
  }
}

:root {
  --font-sans: "IBM Plex Sans", "Segoe UI", "Noto Sans", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Monaco, monospace;

  --color-bg: #f5f7fb;
  --color-surface: #ffffff;
  --color-surface-muted: #f8fbff;
  --color-text: #10213d;
  --color-muted: #51607a;
  --color-border: #d6dfec;

  --color-primary: #1659d7;
  --color-primary-ink: #ffffff;
  --color-primary-soft: #e9f1ff;
  --color-danger: #b3261e;
  --color-danger-soft: #ffece9;
  --color-success: #067647;
  --bg-accent-1: #dbe9ff;
  --bg-accent-2: #e4f0ff;
  --color-nav-hover: #edf4ff;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;

  --radius-sm: 0.45rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 1px 2px rgba(16, 33, 61, 0.06);
  --shadow-md: 0 10px 24px rgba(16, 33, 61, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  line-height: 1.55;
  overflow-x: clip;
  background:
    radial-gradient(circle at 12% -24%, var(--bg-accent-1) 0%, transparent 40%),
    radial-gradient(circle at 90% -30%, var(--bg-accent-2) 0%, transparent 34%),
    var(--color-bg);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1024px, 100% - 2rem);
  margin: 0 auto;
  padding: var(--space-4) 0 var(--space-7);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding-top: env(safe-area-inset-top, 0);
}

.site-nav-shell {
  width: 100%;
  max-width: 100%;
  margin: 0;
}

.site-main {
  display: grid;
  gap: var(--space-4);
}

.site-main > * {
  min-width: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-border);
  border-top: 0;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.nav-mobile-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.nav-menu {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
  gap: var(--space-4);
  width: auto;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.nav-toggle:hover {
  background: var(--color-surface-muted);
}

.nav-toggle:focus-visible {
  outline: 3px solid #bed8ff;
  outline-offset: 1px;
}

.site-nav[data-nav-mode="collapsed"] {
  display: grid;
  gap: var(--space-2);
}

.site-nav[data-nav-mode="collapsed"] .nav-toggle {
  display: inline-flex;
}

.site-nav[data-nav-mode="collapsed"][data-nav-ready="true"] .nav-menu {
  display: none;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-2);
}

.site-nav[data-nav-mode="collapsed"][data-nav-ready="true"].is-open .nav-menu {
  display: flex;
  flex-direction: column;
  width: auto;
  gap: var(--space-2);
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: visible;
}

.site-nav[data-nav-mode="collapsed"] .nav-left,
.site-nav[data-nav-mode="collapsed"] .nav-right,
.site-nav[data-nav-mode="collapsed"] .nav-links,
.site-nav[data-nav-mode="collapsed"] .nav-controls {
  display: flex;
  flex-direction: column;
  width: auto;
  gap: var(--space-2);
  align-items: center;
  justify-content: center;
}

.site-nav[data-nav-mode="collapsed"] .nav-right {
  margin-left: 0;
}

.site-nav[data-nav-mode="collapsed"] .brand {
  margin-right: 0;
  flex: 0 0 auto;
}

.site-nav[data-nav-mode="collapsed"] .nav-account {
  justify-content: center;
  order: 2;
}

.site-nav[data-nav-mode="collapsed"] .nav-controls {
  order: 1;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: nowrap;
}

.nav-left {
  min-width: max-content;
  flex: 1 1 auto;
}

.nav-right {
  margin-left: auto;
  justify-content: flex-end;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--color-text);
  margin-right: var(--space-2);
}

.brand-logo {
  display: block;
  width: auto;
  height: 1.15rem;
  max-height: 1.15rem;
  flex: 0 0 auto;
  object-fit: contain;
}

.brand > img {
  width: auto;
  height: 1.15rem;
  max-height: 1.15rem;
  max-width: 2rem;
  flex: 0 0 auto;
  object-fit: contain;
}

.brand-text {
  line-height: 1;
}

.brand:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: nowrap;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: nowrap;
  order: 2;
}

.nav-account {
  display: flex;
  align-items: center;
  min-width: 0;
  order: 1;
}

.nav-link {
  display: inline-block;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-weight: 600;
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--color-nav-hover);
  color: var(--color-text);
  text-decoration: none;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 1.1rem;
  cursor: pointer;
}

.theme-toggle:hover {
  background: var(--color-surface-muted);
}

.nav-link--login {
  color: var(--color-primary);
}

.nav-user {
  margin: 0;
  white-space: nowrap;
}

.page-head {
  display: grid;
  gap: var(--space-2);
}

.page-head--compact {
  gap: var(--space-1);
}

.page-title {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
}

/* Post detail titles must break long unspaced text so the page can keep shrinking. */
#post-top.page-title {
  max-width: 100%;
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.section-title {
  margin: 0;
  font-size: 1.18rem;
  letter-spacing: -0.01em;
}

.lead-inline {
  margin: 0;
  color: #2b466c;
  max-width: 72ch;
}

.index-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.index-head .page-title {
  font-size: clamp(1.9rem, 4vw, 2.4rem);
}

.stack {
  display: grid;
  gap: var(--space-4);
}

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 140ms ease, border-color 140ms ease, transform 140ms ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: #cdd9ea;
}

.card--post:hover {
  transform: translateY(-1px);
}

.card--clickable {
  position: relative;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.card-head--post {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, clamp(7rem, 34%, 14rem));
  align-items: flex-start;
  column-gap: var(--space-3);
  row-gap: var(--space-1);
}

.post-title-link {
  color: #0f2648;
  font-size: 1.05rem;
  line-height: 1.35;
}

.card--post .card-head {
  min-width: 0;
}

.card--post .post-title-link {
  grid-column: 1;
  display: block;
  max-width: 100%;
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-title-link::after {
  content: "";
  position: absolute;
  inset: 0;
}

.post-title-link:hover {
  color: var(--color-primary);
}

.card--clickable:focus-within {
  border-color: #9cb8e5;
  box-shadow: 0 0 0 3px #d7e7ff;
}

.post-author-badge {
  grid-column: 2;
  justify-self: end;
  align-self: start;
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-muted);
  color: var(--color-muted);
  font-size: 0.82rem;
  font-weight: 700;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.post-meta-row {
  margin-top: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.meta-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.22rem 0.58rem;
  background: var(--color-surface-muted);
  color: var(--color-muted);
  font-size: 0.82rem;
  line-height: 1.2;
}

.meta-pill-label {
  font-weight: 700;
}

.meta-pill--net {
  color: #1b3f76;
}

.meta-pill-value {
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.meta,
.small {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.data-grid {
  display: grid;
  gap: var(--space-2);
}

.post-meta-grid {
  gap: var(--space-3);
}

.post-meta-grid--top {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.post-meta-grid--model {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.post-meta-grid--tags {
  grid-template-columns: 1fr;
}

.post-summary-card {
  gap: var(--space-3);
}

.post-summary-timebar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-muted);
  min-width: 0;
  max-width: 100%;
}

.post-summary-timebar--dual {
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
  align-content: center;
}

.post-summary-time-item {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  min-width: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.post-summary-time-label {
  color: var(--color-text);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.post-meta-item {
  min-width: 0;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-muted);
}

.post-meta-grid > .post-meta-item {
  min-width: 0;
}

.post-meta-item--full {
  grid-column: 1 / -1;
}

.post-meta-label {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.post-meta-content {
  margin: var(--space-1) 0 0;
  color: var(--color-text);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.4;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.post-meta-content--tags {
  margin-top: var(--space-2);
}

.post-meta-content-empty {
  color: var(--color-muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0.2rem 0.58rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.post-summary-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-1);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.post-summary-actions .btn {
  width: auto;
}

form {
  margin: 0;
}

.form {
  display: grid;
  gap: var(--space-3);
}

.form-card {
  padding: var(--space-5);
}

.form-card--narrow {
  max-width: 32rem;
}

.search-form {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.index-tools {
  display: grid;
  justify-items: end;
  gap: var(--space-2);
}

.index-sort-note {
  margin: 0;
}

.search-form input[type="search"] {
  min-width: 18rem;
  width: clamp(18rem, 28vw, 24rem);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

[data-theme="dark"] {
  --color-bg: #0c1220;
  --color-surface: #121b2f;
  --color-surface-muted: #0f1729;
  --color-text: #edf3ff;
  --color-muted: #b7c4da;
  --color-border: #2d3d5f;
  --color-primary: #6ea8ff;
  --color-primary-ink: #f5f9ff;
  --color-primary-soft: #1a2c4f;
  --color-danger: #ff9588;
  --color-danger-soft: #3a1f25;
  --color-success: #52d39b;
  --bg-accent-1: #1a2d4d;
  --bg-accent-2: #132847;
  --color-nav-hover: #1b2a45;
  --shadow-sm: 0 1px 2px rgba(2, 7, 18, 0.6);
  --shadow-md: 0 10px 24px rgba(2, 7, 18, 0.65);
}

[data-theme="dark"] a {
  color: #9dc0ff;
}

[data-theme="dark"] .lead-inline {
  color: #b7c8e6;
}

[data-theme="dark"] .meta,
[data-theme="dark"] .small {
  color: #b7c4da;
}

[data-theme="dark"] label {
  color: #d1def5;
}

[data-theme="dark"] .post-title-link {
  color: #d7e2f5;
}

[data-theme="dark"] .post-title-link:hover {
  color: #9dc0ff;
}

[data-theme="dark"] .post-author-badge,
[data-theme="dark"] .meta-pill {
  background: #16233c;
  border-color: #324867;
  color: #c0cde2;
}

[data-theme="dark"] .meta-pill--net {
  color: #bcd8ff;
}

[data-theme="dark"] .post-summary-timebar,
[data-theme="dark"] .post-meta-item {
  background: #16233c;
  border-color: #324867;
}

[data-theme="dark"] .post-summary-time-label,
[data-theme="dark"] .post-meta-content,
[data-theme="dark"] .tag-chip {
  color: #dbe7fb;
}

[data-theme="dark"] .post-meta-label,
[data-theme="dark"] .post-meta-content-empty {
  color: #9db0cf;
}

[data-theme="dark"] .tag-chip {
  background: #111d34;
  border-color: #385178;
}

[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
  border-color: #31405f;
  background: #0f1729;
  color: var(--color-text);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
  color: #97a8c7;
}

[data-theme="dark"] .btn--primary {
  background: #6ea8ff;
  color: #071022;
}

[data-theme="dark"] .btn--primary:hover {
  background: #8dbbff;
  color: #071022;
}

[data-theme="dark"] .btn--secondary {
  background: #1a2740;
  color: #dce8fc;
  border-color: #2c3d61;
}

[data-theme="dark"] .btn--secondary:hover {
  background: #223154;
}

[data-theme="dark"] .btn--danger {
  background: #3a1f25;
  color: #ffb3aa;
  border-color: #7c3d45;
}

[data-theme="dark"] .btn--danger:hover {
  background: #4a262f;
}

[data-theme="dark"] .comments-section .btn {
  border-color: transparent;
}

[data-theme="dark"] .comments-section .btn:hover {
  box-shadow: 0 1px 3px rgba(7, 13, 24, 0.52);
}

[data-theme="dark"] .comments-section .btn--secondary {
  background: #223154;
}

[data-theme="dark"] .comments-section .btn--secondary:hover {
  background: #2a3b63;
}

[data-theme="dark"] .comments-section .btn--danger {
  background: #4a262f;
  color: #ffb3aa;
}

[data-theme="dark"] .comments-section .btn--danger:hover {
  background: #5a2e38;
}

[data-theme="dark"] .hero {
  background: linear-gradient(124deg, #16243f 0%, #111c33 68%, #0f1729 100%);
  border-color: #314468;
}

[data-theme="dark"] .hero .page-title {
  color: #ebf2ff;
}

[data-theme="dark"] .hero .lead {
  color: #c7d6f0;
}

[data-theme="dark"] .hero .eyebrow {
  color: #8dbbff;
}

[data-theme="dark"] .hero .btn--secondary {
  background: #223357;
  border-color: #38507f;
}

[data-theme="dark"] .rendered-markdown pre {
  background: #0b1426;
  color: #e9f1ff;
  border: 0;
}

[data-theme="dark"] .code-block {
  background: #0b1426;
  border-color: #2a3d60;
}

[data-theme="dark"] .code-toolbar {
  background: #14203a;
  border-bottom-color: #304a77;
  padding-left: 0.72rem;
}

[data-theme="dark"] .code-lang-badge {
  border: 0;
  background: transparent;
  color: #d6e5ff;
}

[data-theme="dark"] .code-copy-btn {
  background: #12203a;
  border-color: #436297;
  color: #dce9ff;
}

[data-theme="dark"] .code-copy-btn:hover {
  background: #193058;
}

[data-theme="dark"] .rendered-markdown code {
  background: #1d2f4d;
  color: #deebff;
}

[data-theme="dark"] .rendered-markdown pre code {
  background: transparent;
  color: inherit;
  display: block;
}

[data-theme="dark"] .rendered-markdown blockquote {
  border-left-color: #6f99e6;
  color: #bdd1f3;
}

[data-theme="dark"] .empty {
  background: #101b30;
}

[data-theme="dark"] .card--clickable:focus-within {
  border-color: #4f74b3;
  box-shadow: 0 0 0 3px #213a66;
}

.auth-page,
.delete-page {
  width: 100%;
}

.auth-shell,
.delete-shell {
  width: 100%;
  max-width: 46rem;
  margin: 0 auto;
  display: grid;
  justify-items: center;
  gap: var(--space-4);
}

.auth-head,
.delete-head {
  text-align: center;
  justify-items: center;
}

.auth-shell .error,
.delete-shell .error {
  text-align: center;
}

.auth-shell .form-card--narrow {
  width: 100%;
  margin-inline: auto;
}

.field {
  display: grid;
  gap: 0.42rem;
}

.password-input-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.password-input-row input {
  flex: 1 1 auto;
}

.password-toggle-btn {
  min-width: 4.7rem;
  white-space: nowrap;
}

label {
  font-size: 0.92rem;
  font-weight: 600;
  color: #203657;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid #bfcde0;
  border-radius: var(--radius-sm);
  padding: 0.62rem 0.72rem;
  font: inherit;
  background: #fff;
  color: var(--color-text);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: #74839c;
}

input:focus,
textarea:focus,
select:focus {
  outline: 3px solid #bed8ff;
  border-color: var(--color-primary);
}

.btn {
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.58rem 0.9rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  line-height: 1.2;
}

.site-nav .btn {
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.btn--primary:hover {
  background: #0f4fc6;
}

.btn--secondary {
  background: #eaf0f8;
  color: #123055;
  border-color: #d4deec;
}

.btn--secondary:hover {
  background: #dfe8f4;
}

.btn--danger {
  background: var(--color-danger-soft);
  color: var(--color-danger);
  border-color: #f9c7c0;
}

.btn--danger:hover {
  background: #ffdfda;
}

.button-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.button-row--end {
  justify-content: flex-end;
}

.error {
  margin: 0;
  color: var(--color-danger);
  font-weight: 700;
}

.empty {
  margin: 0;
  padding: var(--space-4);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-muted);
}

.pagination {
  margin-top: var(--space-4);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-2);
}

.pagination-info {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
}

.pagination-actions {
  display: flex;
  gap: var(--space-2);
}

.pagination-actions--end {
  justify-content: flex-end;
}

.page-section {
  margin-top: var(--space-5);
}

.page-section[id] {
  scroll-margin-top: 5.5rem;
}

.page-title[id] {
  scroll-margin-top: 5.5rem;
}

.post-toc {
  padding: var(--space-4);
  gap: var(--space-3);
}

.post-toc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 0.2rem;
  border-radius: var(--radius-sm);
}

.post-toc-title-link {
  display: inline-flex;
  align-items: center;
  max-width: 10.4rem;
  min-height: 2rem;
  padding: 0.3rem 0.45rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.post-toc-title-link:hover {
  text-decoration: none;
  color: var(--color-primary);
  background: var(--color-nav-hover);
}

.post-toc-title-link:focus-visible {
  outline: 3px solid #bed8ff;
  outline-offset: 1px;
}

.post-toc-home-link {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface-muted);
  color: var(--color-primary);
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.1;
}

.post-toc-home-link:hover {
  text-decoration: none;
  color: #124596;
  border-color: #9eb6da;
}

.post-toc-home-link:focus-visible {
  outline: 3px solid #bed8ff;
  outline-offset: 1px;
}

.post-toc--floating {
  --toc-floating-inset: clamp(5.5rem, 10vh, 7.5rem);
  --toc-outset: 2rem;
  --content-right: calc((100% + min(1024px, 100% - 2rem)) / 2);
  position: fixed;
  top: var(--toc-floating-inset);
  left: calc(var(--content-right) + var(--toc-outset));
  width: clamp(15rem, 18vw, 18rem);
  max-height: calc(100vh - (var(--toc-floating-inset) * 2));
  overflow-y: auto;
  z-index: 20;
}

.post-toc--hidden {
  display: none !important;
}

.post-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-1);
}

.post-toc-link {
  display: block;
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-weight: 600;
}

.post-toc-link:hover {
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-nav-hover);
}

.post-toc-link.is-active {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.content-section {
  gap: var(--space-3);
  min-width: 0;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.section-head h2 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.block-editor-actions {
  display: flex;
  justify-content: flex-start;
}

.copy-btn {
  min-width: 8.5rem;
}

.copy-btn--done {
  border-color: #b7ebd0;
  background: #ecfdf3;
  color: var(--color-success);
}

.rendered-markdown {
  font-family: var(--font-sans);
  white-space: normal;
  word-break: break-word;
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  min-width: 0;
  max-width: 100%;
}

.rendered-markdown > :first-child {
  margin-top: 0;
}

.rendered-markdown > :last-child {
  margin-bottom: 0;
}

.rendered-markdown p,
.rendered-markdown ul,
.rendered-markdown ol,
.rendered-markdown blockquote {
  line-height: 1.62;
}

.rendered-markdown pre {
  margin: 0;
  padding: var(--space-3);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  background: #0f172a;
  color: #e2e8f0;
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.code-block {
  margin: var(--space-3) 0;
  border: 1px solid #1e293b;
  border-radius: var(--radius-sm);
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  background: #0f172a;
}

.code-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 0.48rem 0.62rem;
  background: #101b31;
  border-bottom: 1px solid #334155;
}

.code-lang-badge {
  display: inline-block;
  border: 0;
  border-radius: 0;
  background: transparent;
  padding: 0.11rem 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: #cbd5e1;
  text-transform: lowercase;
}

.code-copy-btn {
  border: 1px solid #334155;
  border-radius: 0.45rem;
  background: #0b1220;
  color: #d6dfef;
  padding: 0.22rem 0.5rem;
  font-size: 0.78rem;
  cursor: pointer;
}

.code-copy-btn--done {
  border-color: #22c55e;
  color: #86efac;
}

.rendered-markdown pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.rendered-markdown code {
  font-family: var(--font-mono);
  background: #e8edf5;
  border-radius: 0.35rem;
  padding: 0.08rem 0.3rem;
}

.rendered-markdown :not(pre) > code {
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.rendered-markdown blockquote {
  margin: var(--space-3) 0;
  border-left: 3px solid #8cb7ff;
  padding-left: var(--space-3);
  color: #234673;
}

.rendered-markdown table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-3) 0;
}

.rendered-markdown th,
.rendered-markdown td {
  border: 1px solid var(--color-border);
  text-align: left;
  padding: var(--space-2);
}

.copy-source {
  display: none;
}

.rendered-markdown .katex-display {
  overflow-x: auto;
  overflow-y: hidden;
  margin: var(--space-3) 0;
}

.hero {
  padding: var(--space-6);
  background: linear-gradient(124deg, #ffffff 0%, #f8fbff 68%, #edf5ff 100%);
}

.about-brand {
  margin: 0 0 var(--space-2);
  display: inline-flex;
  align-items: center;
  gap: 0.58rem;
  color: var(--color-text);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.about-brand-logo {
  display: block;
  width: auto;
  height: 2.15rem;
  max-height: 2.15rem;
  flex: 0 0 auto;
  object-fit: contain;
}

.about-brand > img {
  width: auto;
  height: 2.15rem;
  max-height: 2.15rem;
  max-width: 3.2rem;
  flex: 0 0 auto;
  object-fit: contain;
}

.eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lead {
  margin: 0 0 var(--space-4);
  max-width: 70ch;
  color: #25456f;
}

.step-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.step-kicker {
  margin: 0 0 var(--space-2);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.8rem;
}

.admin-user-list {
  margin-top: var(--space-4);
}

.admin-section {
  margin-top: var(--space-5);
}

.admin-dashboard-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-dashboard-card {
  gap: var(--space-3);
}

.admin-user-card {
  gap: var(--space-3);
}

.audit-filter-form {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.audit-log-list {
  margin-top: var(--space-4);
}

.audit-log-card {
  gap: var(--space-3);
}

.audit-meta {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.audit-details summary {
  cursor: pointer;
  color: var(--color-primary);
  font-weight: 600;
}

.audit-details pre {
  margin: var(--space-2) 0 0;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  background: var(--color-surface-muted);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.status-pill--active {
  background: #e8f7ee;
  color: #117a47;
}

.status-pill--disabled {
  background: #f3f4f6;
  color: #445268;
}

.admin-action-form {
  justify-self: start;
}

.interaction-section,
.comments-section {
  gap: var(--space-3);
}

.comments-head {
  align-items: end;
}

.comment-sort-form {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.comment-sort-form select {
  width: auto;
  min-width: 8rem;
}

.comments-section .btn {
  padding: 0.42rem 0.7rem;
  font-size: 0.92rem;
  line-height: 1.18;
  border-color: transparent;
  box-shadow: none;
  transition: background-color 140ms ease, box-shadow 140ms ease, transform 90ms ease;
}

.comments-section .btn:hover {
  box-shadow: 0 1px 3px rgba(16, 33, 61, 0.18);
}

.comments-section .btn:active {
  transform: translateY(1px);
}

.comments-section .btn:focus-visible {
  outline: 3px solid #bed8ff;
  outline-offset: 1px;
}

.comments-section .btn--secondary {
  background: #e7eef8;
}

.comments-section .btn--secondary:hover {
  background: #d8e4f2;
}

.comments-section .btn--danger {
  background: #ffe7e3;
}

.comments-section .btn--danger:hover {
  background: #ffd9d3;
}

.vote-panel {
  display: grid;
  gap: var(--space-2);
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 140ms ease, border-color 140ms ease;
  container-type: inline-size;
}

.vote-panel:hover {
  box-shadow: var(--shadow-md);
  border-color: #cdd9ea;
}

.vote-panel:focus-within {
  border-color: #9cb8e5;
  box-shadow: 0 0 0 3px #d7e7ff;
}

.vote-layout {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
}

.vote-meta {
  display: grid;
  gap: var(--space-2);
  min-width: 0;
  flex: 1 1 auto;
}

.vote-panel-head {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.vote-panel-head h2 {
  margin: 0;
  font-size: 1.12rem;
  letter-spacing: -0.01em;
}

.vote-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(7.5rem, 8.75rem));
  gap: var(--space-2);
  justify-content: start;
}

.vote-stat {
  margin: 0;
  padding: 0.3rem 0.45rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-muted);
}

.vote-stat-label {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 600;
}

.vote-stat-value {
  margin: 0.12rem 0 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

.vote-stat--up {
  border-color: var(--color-border);
  background: var(--color-surface-muted);
}

.vote-stat--up .vote-stat-value {
  color: #0f6b40;
}

.vote-stat--down {
  border-color: var(--color-border);
  background: var(--color-surface-muted);
}

.vote-stat--down .vote-stat-value {
  color: #9e2b24;
}

.vote-stat--net {
  border-color: var(--color-border);
  background: var(--color-surface-muted);
}

.vote-stat--net .vote-stat-value {
  color: #1b3f76;
}

.vote-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  flex-wrap: wrap;
  flex: 0 0 auto;
}

.vote-actions form {
  margin: 0;
}

.vote-actions .btn {
  width: auto;
}

.vote-btn {
  min-width: 6.2rem;
}

.vote-btn--active {
  box-shadow: 0 0 0 3px rgba(67, 132, 235, 0.2);
}

.vote-btn--active-up {
  border-color: #4f89df;
}

.vote-btn--active-down {
  border-color: #d7827a;
}

.vote-login-hint {
  margin: 0;
}

[data-theme="dark"] .vote-stat {
  background: var(--color-surface-muted);
  border-color: var(--color-border);
}

[data-theme="dark"] .vote-stat--up .vote-stat-value {
  color: #86e5b8;
}

[data-theme="dark"] .vote-stat--down .vote-stat-value {
  color: #ffb8b0;
}

[data-theme="dark"] .vote-stat--net .vote-stat-value {
  color: #bcd8ff;
}

[data-theme="dark"] .vote-btn--active {
  box-shadow: 0 0 0 3px rgba(78, 140, 239, 0.3);
}

@container (max-width: 44rem) {
  .vote-layout {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--space-3);
  }

  .vote-meta {
    width: 100%;
  }

  .vote-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .vote-actions {
    display: grid;
    grid-template-columns: 1fr;
    justify-content: stretch;
    width: 100%;
  }

  .vote-actions form,
  .vote-actions .btn {
    width: 100%;
  }
}

.comment-list {
  margin-top: var(--space-2);
}

.comment-card {
  gap: var(--space-3);
}

.comment-actions {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  justify-content: space-between;
}

.comment-actions .btn {
  width: auto;
}

.comment-actions-main {
  display: flex;
  flex: 1 1 auto;
  flex-wrap: wrap;
  gap: var(--space-2);
  min-width: 0;
}

.comment-actions-danger {
  align-items: center;
  border-left: 1px solid var(--color-border);
  display: flex;
  flex: 0 0 auto;
  gap: var(--space-2);
  margin-left: auto;
  padding-left: var(--space-2);
}

[data-theme="dark"] .comment-actions-danger {
  border-left-color: #2c3d61;
}

.comment-vote-stats {
  margin: 0;
}

.comment-reply-form {
  border-top: 1px dashed var(--color-border);
  padding-top: var(--space-3);
}

.comment-reply-list {
  border-left: 3px solid var(--color-border);
  padding-left: var(--space-3);
}

.comment-reply-form[hidden],
.comment-reply-list[hidden] {
  display: none !important;
}

.comment-reply-card {
  background: var(--color-surface-muted);
}

.delete-card {
  width: 100%;
  max-width: 44rem;
  margin-inline: auto;
}

.delete-shell .button-row--end {
  justify-content: center;
}

.faq-item h3 {
  margin-top: 0;
  margin-bottom: var(--space-2);
}

@media (max-width: 900px) {
  .post-meta-grid--top,
  .post-meta-grid--model {
    grid-template-columns: 1fr;
  }

  .post-summary-timebar {
    align-items: center;
    flex-direction: column;
    gap: var(--space-1);
    min-width: 0;
  }

  .admin-dashboard-grid,
  .audit-filter-form,
  .audit-meta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1360px) {
  .post-toc--floating {
    display: none;
  }
}

@media (max-width: 820px) {
  .card-head--post {
    grid-template-columns: minmax(0, 1fr) minmax(0, min(44vw, 12rem));
  }

  .post-author-badge {
    max-width: min(44vw, 12rem);
  }

  .container {
    width: min(1024px, 100% - 1rem);
    padding-top: var(--space-4);
  }

  .card,
  .form-card {
    padding: var(--space-4);
  }

  .btn {
    width: 100%;
  }

  .site-nav .btn {
    width: auto;
  }

  .password-input-row {
    flex-wrap: wrap;
  }

  .password-toggle-btn {
    width: 100%;
  }

  .button-row {
    width: 100%;
  }

  .step-grid {
    grid-template-columns: 1fr;
  }

  .section-head .btn,
  .block-editor-actions .btn,
  .card-head .btn,
  .pagination .btn {
    width: auto;
  }

  .comment-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .comment-actions-main {
    width: 100%;
  }

  .comment-actions-danger {
    border-left: 0;
    border-top: 1px solid var(--color-border);
    justify-content: flex-start;
    margin-left: 0;
    padding-left: 0;
    padding-top: var(--space-2);
    width: 100%;
  }

  [data-theme="dark"] .comment-actions-danger {
    border-top-color: #2c3d61;
  }

  .rendered-markdown {
    overflow-x: hidden;
  }

  .code-toolbar {
    padding: 0.42rem 0.52rem;
    gap: var(--space-1);
  }

  .search-form {
    width: 100%;
  }

  .index-tools {
    width: 100%;
    justify-items: stretch;
  }

  .search-form input[type="search"] {
    min-width: 0;
    width: 100%;
  }

  .post-meta-row {
    gap: var(--space-1);
  }

  .pagination {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .pagination-actions,
  .pagination-actions--end {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .page-title {
    font-size: 1.4rem;
  }

  .index-head .page-title {
    font-size: 1.8rem;
  }

  .site-nav {
    padding: 0.75rem;
  }

  .brand-logo {
    height: 1.05rem;
    max-height: 1.05rem;
  }

  .brand > img {
    height: 1.05rem;
    max-height: 1.05rem;
    max-width: 1.8rem;
  }

  .nav-controls {
    gap: var(--space-1);
  }

  .nav-toggle {
    width: 2.4rem;
    height: 2.4rem;
  }

  .nav-user {
    font-size: 0.84rem;
  }

  .hero {
    padding: var(--space-4);
  }

  .about-brand {
    font-size: 1.1rem;
  }

  .about-brand-logo {
    height: 1.8rem;
    max-height: 1.8rem;
  }

  .about-brand > img {
    height: 1.8rem;
    max-height: 1.8rem;
    max-width: 2.8rem;
  }
}