/* AutoBlog promo page */
.promo-page {
  .not-found {
    position: relative;
    margin: clamp(4rem, 8vw, 6.5rem) auto;
    max-width: 680px;
    padding: clamp(2.8rem, 6vw, 3.8rem) clamp(2.2rem, 7vw, 3.4rem);
    text-align: center;
    background: linear-gradient(145deg, rgba(59, 130, 246, 0.08), rgba(255, 255, 255, 0.95) 42%, rgba(14, 165, 233, 0.1));
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.22);
    box-shadow: 0 28px 60px rgba(15, 23, 42, 0.18);
    overflow: hidden;
  }

  .not-found::before {
    content: "";
    position: absolute;
    inset: -30% -10% 55% -10%;
    background: linear-gradient(120deg, rgba(14, 165, 233, 0.28), transparent 55%),
      linear-gradient(250deg, rgba(59, 130, 246, 0.22), transparent 52%);
    opacity: 0.65;
    pointer-events: none;
    z-index: 0;
  }

  .not-found__halo {
    position: absolute;
    inset: 14% 12% 18% 12%;
    background: radial-gradient(circle at 30% 20%, rgba(37, 99, 235, 0.32), transparent 65%),
      radial-gradient(circle at 70% 80%, rgba(14, 165, 233, 0.25), transparent 60%);
    filter: blur(46px);
    opacity: 0.65;
    pointer-events: none;
    z-index: 1;
  }

  .not-found__mist {
    position: absolute;
    inset: auto 6% 14% 6%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    pointer-events: none;
    z-index: 1;
  }

  .not-found__mist span {
    height: 120px;
    border-radius: 999px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(203, 213, 225, 0));
    opacity: 0.55;
    animation: not-found-mist 8s ease-in-out infinite;
  }

  .not-found__mist span:nth-child(2) {
    animation-delay: 1.4s;
  }

  .not-found__mist span:nth-child(3) {
    animation-delay: 2.6s;
  }

  .not-found__code {
    position: relative;
    z-index: 2;
    margin: 0 0 0.6rem;
    font-size: clamp(3.2rem, 10vw, 5.8rem);
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    background: linear-gradient(120deg, rgba(37, 99, 235, 0.85), rgba(14, 165, 233, 0.62));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .not-found__title {
    position: relative;
    z-index: 2;
    margin: 0;
    font-size: clamp(2.2rem, 4.2vw, 2.85rem);
    font-weight: 700;
    color: var(--color-text);
  }

  .not-found__poem {
    position: relative;
    z-index: 2;
    margin: 1.15rem auto 1.45rem;
    max-width: 520px;
    display: inline-flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.15rem;
    border-radius: var(--radius-lg);
    background: rgba(15, 23, 42, 0.05);
    border: 1px solid rgba(148, 163, 184, 0.28);
    color: var(--color-text);
    font-size: 1.05rem;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
  }

  .not-found__poem-text {
    font-weight: 600;
    letter-spacing: 0.04em;
  }

  .not-found__caret {
    width: 0.1em;
    align-self: stretch;
    background: linear-gradient(180deg, rgba(37, 99, 235, 0.8), rgba(59, 130, 246, 0.2));
    opacity: 0;
    animation: none;
  }

  .not-found__poem.is-typing .not-found__caret {
    opacity: 1;
    animation: not-found-caret 1.05s steps(1, end) infinite;
  }

  .not-found__summary {
    position: relative;
    z-index: 2;
    margin: 1rem auto 1.8rem;
    max-width: 460px;
    color: var(--color-muted);
    line-height: 1.75;
  }

  .not-found__actions {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.85rem;
    flex-wrap: wrap;
  }

  .not-found__actions .button {
    min-width: 9.5rem;
    justify-content: center;
  }

  @media (max-width: 640px) {
    .not-found {
      margin: 3.2rem auto 4.2rem;
      padding: 2.5rem 1.65rem 2.8rem;
    }

    .not-found__poem {
      flex-direction: column;
      gap: 0.35rem;
    }

    .not-found__poem.is-typing {
      align-items: stretch;
    }

    .not-found__actions {
      flex-direction: column;
      width: 100%;
    }

    .not-found__actions .button {
      width: 100%;
    }
  }

  @keyframes not-found-mist {
    0%,
    100% {
      transform: translateY(0) scaleX(1);
      opacity: 0.5;
    }
    50% {
      transform: translateY(-18px) scaleX(1.18);
      opacity: 0.85;
    }
  }

  @keyframes not-found-caret {
    0%,
    50% {
      opacity: 1;
    }
    51%,
    100% {
      opacity: 0;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .not-found,
    .not-found__mist span,
    .not-found__caret {
      animation: none !important;
      transition: none !important;
    }

    .not-found__mist span {
      opacity: 0.4;
    }
  }
  font-size: 0.96rem;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.promo-button--primary {
  background: rgba(248, 250, 252, 0.95);
  color: var(--color-primary);
  box-shadow: 0 16px 28px rgba(15, 23, 42, 0.18);
}

.promo-button--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 36px rgba(15, 23, 42, 0.28);
}

.promo-button--ghost {
  background: rgba(15, 23, 42, 0.2);
  color: #f8fafc;
  border: 1px solid rgba(248, 250, 252, 0.28);
}

.promo-button--ghost:hover {
  transform: translateY(-2px);
  background: rgba(15, 23, 42, 0.26);
}

.promo-hero__highlights {
  display: grid;
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.promo-hero__highlights li {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.98rem;
  background: rgba(15, 23, 42, 0.2);
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-md);
  box-shadow: inset 0 0 0 1px rgba(248, 250, 252, 0.08);
}

.promo-hero__icon {
  font-size: 1.05rem;
}

.promo-hero__demo {
  position: absolute;
  right: clamp(1.4rem, 10vw, 5.5rem);
  bottom: clamp(1.8rem, 9vw, 4.5rem);
  width: min(290px, 42vw);
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.6);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.28);
  backdrop-filter: blur(14px);
  overflow: hidden;
  animation: promoFloat 12s ease-in-out infinite;
}

.promo-hero__demo-header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.65rem 0.9rem;
  background: rgba(15, 23, 42, 0.5);
  font-size: 0.85rem;
}

.promo-hero__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.6);
}

.promo-hero__demo-body {
  padding: 0.85rem 1rem 1.05rem;
  display: grid;
  gap: 0.55rem;
  font-size: 0.9rem;
  color: rgba(226, 232, 240, 0.9);
}

.promo-hero__demo-body p {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.promo-hero__tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  background: rgba(96, 165, 250, 0.25);
  color: #e0f2fe;
  letter-spacing: 0.05em;
}

.promo-hero__floating {
  position: absolute;
  inset: auto auto clamp(1.6rem, 8vw, 3rem) clamp(1.2rem, 9vw, 3rem);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.promo-hero__floating li {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: rgba(15, 23, 42, 0.92);
  background: rgba(248, 250, 252, 0.88);
  box-shadow: 0 12px 20px rgba(15, 23, 42, 0.22);
  animation: promoFloat 10s ease-in-out infinite;
}

.promo-hero__floating li:nth-child(2) {
  animation-delay: 3s;
}

.promo-hero__floating li:nth-child(3) {
  animation-delay: 6s;
}

[data-promo-reveal] {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
  transition:
    opacity 0.75s cubic-bezier(0.33, 1, 0.68, 1) var(--promo-delay, 0s),
    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1) var(--promo-delay, 0s);
}

[data-promo-reveal].is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.promo-section {
  display: flex;
  flex-direction: column;
  gap: clamp(1.8rem, 4vw, 2.6rem);
}

.promo-section__header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  gap: 0.65rem;
}

.promo-section__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  color: var(--color-muted);
}

.promo-section__title {
  margin: 0;
  font-size: clamp(1.95rem, 3.6vw, 2.45rem);
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.promo-section__lead {
  margin: 0;
  color: var(--color-muted);
  font-size: 1rem;
}

.promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.4rem;
}

.promo-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(148, 163, 184, 0.18);
  display: grid;
  gap: 0.75rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.promo-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 45px rgba(15, 23, 42, 0.16);
}

.promo-card h3 {
  margin: 0;
  font-size: 1.25rem;
  color: var(--color-text);
}

.promo-card p {
  margin: 0;
  color: var(--color-muted);
}

.promo-card__list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.45rem;
  color: var(--color-text);
}

.promo-card__list li {
  line-height: 1.5;
}

.promo-section--flow .promo-flow {
  position: relative;
}

.promo-flow {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.promo-flow__item {
  position: relative;
  padding: 1.35rem 1.4rem 1.45rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid rgba(148, 163, 184, 0.22);
  box-shadow: var(--shadow-card);
  display: grid;
  gap: 0.65rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.promo-flow__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 42px rgba(15, 23, 42, 0.16);
}

.promo-flow__step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 1rem;
}

.promo-flow__item h3 {
  margin: 0;
  font-size: 1.2rem;
}

.promo-flow__item p {
  margin: 0;
  color: var(--color-muted);
}

.promo-section--metrics .promo-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.1rem;
}

.promo-metric {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(14, 116, 144, 0.06));
  border-radius: var(--radius-md);
  padding: 1.25rem 1.4rem;
  border: 1px solid rgba(96, 165, 250, 0.22);
  box-shadow: 0 18px 30px rgba(15, 23, 42, 0.12);
  display: grid;
  gap: 0.35rem;
  text-align: left;
}

.promo-metric__value {
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  font-weight: 700;
  background: linear-gradient(120deg, var(--color-primary), #38bdf8);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.promo-metric__label {
  font-size: 0.95rem;
  color: var(--color-muted);
}

.promo-section--cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, rgba(37, 99, 235, 0.95), rgba(30, 64, 175, 0.85));
  color: #f8fafc;
  padding: clamp(2.4rem, 5vw, 3.4rem);
  box-shadow: 0 30px 60px rgba(15, 23, 42, 0.28);
}

.promo-section--cta::before {
  content: "";
  position: absolute;
  inset: -30% 40% auto -20%;
  height: 180%;
  background: radial-gradient(circle at center, rgba(148, 163, 184, 0.4), rgba(15, 23, 42, 0));
  opacity: 0.45;
  transform: rotate(15deg);
  animation: promoGradient 30s linear infinite;
}

.promo-cta__content {
  position: relative;
  display: grid;
  gap: 1.2rem;
}

.promo-section--cta .promo-section__title,
.promo-section--cta .promo-section__lead {
  color: #f8fafc;
}

.promo-cta__actions {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.promo-cta__actions .promo-button--ghost {
  background: rgba(15, 23, 42, 0.32);
  border-color: rgba(248, 250, 252, 0.4);
}

.promo-section--faq .promo-section__header {
  margin-bottom: 0.8rem;
}

.promo-faq {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.promo-faq__item {
  padding: 1.3rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.22);
  box-shadow: var(--shadow-card);
  background: var(--color-surface);
  display: grid;
  gap: 0.55rem;
}

.promo-faq__item h3 {
  margin: 0;
  font-size: 1.1rem;
}

.promo-faq__item p {
  margin: 0;
  color: var(--color-muted);
}

@keyframes promoGradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes promoFloat {
  0% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(0, -12px, 0);
  }
  100% {
    transform: translate3d(0, 0, 0);
  }
}

@keyframes promoPulse {
  0% {
    transform: scale(0.95);
    opacity: 0.42;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.75;
  }
  100% {
    transform: scale(0.95);
    opacity: 0.42;
  }
}

@media (max-width: 960px) {
  .promo-hero {
    padding: clamp(2.4rem, 8vw, 3.2rem);
  }
  .promo-hero__demo {
    position: relative;
    right: auto;
    bottom: auto;
    width: 100%;
    margin-top: 2.2rem;
  }
  .promo-hero__floating {
    position: relative;
    inset: auto;
    flex-direction: row;
  }
}

@media (max-width: 720px) {
  .promo-hero__inner {
    max-width: 100%;
  }
  .promo-hero__highlights {
    gap: 0.5rem;
  }
  .promo-section__header {
    text-align: left;
  }
  .promo-section__eyebrow {
    justify-self: flex-start;
  }
  .promo-cta__actions,
  .promo-hero__actions {
    width: 100%;
    justify-content: flex-start;
  }
  .promo-button {
    width: fit-content;
  }
}

@media (max-width: 540px) {
  .promo-hero__highlights li {
    font-size: 0.92rem;
  }
  .promo-faq {
    grid-template-columns: 1fr;
  }
  .promo-grid,
  .promo-flow,
  .promo-section--metrics .promo-metrics {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .promo-hero,
  .promo-hero::before,
  .promo-hero::after,
  .promo-hero__demo,
  .promo-hero__floating li,
  .promo-section--cta::before {
    animation: none !important;
  }
  .promo-button,
  .promo-card,
  .promo-flow__item {
    transition: none;
  }
  [data-promo-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}
* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --color-bg: #f9fafb;
  --color-surface: #ffffff;
  --color-muted: #6b7280;
  --color-muted-light: #94a3b8;
  --color-border: #e5e7eb;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-text: #1f2937;
  --color-overlay: rgba(15, 23, 42, 0.85);
  --shadow-card: 0 10px 24px rgba(15, 23, 42, 0.08);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --code-bg: #f5f7ff;
  --code-text: #0f172a;
  --code-header-bg: rgba(37, 99, 235, 0.1);
  --code-header-text: rgba(30, 64, 175, 0.9);
  --code-border: rgba(37, 99, 235, 0.18);
  --syntax-keyword: #1d4ed8;
  --syntax-string: #047857;
  --syntax-number: #b91c1c;
  --syntax-operator: #b45309;
  --syntax-comment: #6b7280;
  --syntax-function: #7c3aed;
  --syntax-variable: #1f2937;
  --syntax-constant: #2563eb;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.58;
  font-size: 0.92rem;
  max-width: 100%;
  overflow-x: hidden;
}

html {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

.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;
}

.icon {
  width: 1.05em;
  height: 1.05em;
  display: inline-block;
  vertical-align: -0.18em;
  fill: currentColor;
  flex-shrink: 0;
}

.icon--sm {
  width: 0.95em;
  height: 0.95em;
  vertical-align: -0.16em;
}

.icon--lg {
  width: 1.25em;
  height: 1.25em;
}

mark {
  background: rgba(37, 99, 235, 0.22);
  color: inherit;
  padding: 0 0.12em;
  border-radius: 0.25em;
  box-decoration-break: clone;
}

.container {
  width: min(1040px, 94vw);
  margin: 0 auto;
  max-width: 100%;
  box-sizing: border-box;
  padding-left: 12px;
  padding-right: 12px;
}

.site-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

.site-header {
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(229, 231, 235, 0.8);
  position: sticky;
  top: 0;
  z-index: 10;
  transform: translateY(0);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, transform 0.35s ease;
  will-change: transform;
}

.site-header__inner {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  padding: 0.95rem 0;
  gap: 1.2rem;
  transition: padding 0.28s ease;
  min-width: 0;
  width: 100%;
  max-width: 100%;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-shrink: 0;
  min-width: 0;
}

.site-header.is-condensed {
  background: rgba(248, 250, 252, 0.95);
  border-bottom-color: rgba(203, 213, 225, 0.8);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.site-header.is-hidden {
  transform: translateY(calc(-100% - 10px));
  box-shadow: none;
}

.site-header.is-condensed .site-header__inner {
  padding: 0.5rem 0;
  gap: 0.85rem;
}

.site-header.is-condensed .brand__title {
  font-size: 1.32rem;
}

.site-header.is-condensed .brand__description {
  display: none;
}

.site-header.is-condensed .site-nav {
  gap: 0.65rem;
}

.site-header.is-condensed .site-nav__link {
  font-size: 0.9rem;
  line-height: 1.1;
}

.site-header.is-condensed .site-header__actions {
  gap: 0.65rem;
}

.site-header.is-condensed .theme-toggle,
.site-header.is-condensed .site-header__search {
  padding: 0.3rem 0.65rem;
  font-size: 0.88rem;
}

@media (max-width: 960px) {
  .brand__description {
    display: none;
  }
  .site-nav {
    gap: 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header {
    transition: none;
    transform: none !important;
  }
  .site-header.is-hidden {
    transform: none !important;
  }
}

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  background: rgba(37, 99, 235, 0.08);
  --progress: 0;
  z-index: 30;
  pointer-events: none;
}

.reading-progress::after {
  content: "";
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #2563eb, #38bdf8);
  transform-origin: left center;
  transform: scaleX(var(--progress));
  transition: transform 0.15s ease;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(37, 99, 235, 0.35);
  background: transparent;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover {
  background: rgba(37, 99, 235, 0.12);
  border-color: rgba(37, 99, 235, 0.5);
  transform: translateY(-1px);
}

.theme-toggle:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.3);
  outline-offset: 2px;
}

.theme-toggle__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle__icon--moon {
  display: none;
}

.theme-toggle[data-theme-state="dark"] .theme-toggle__icon--sun {
  display: none;
}

.theme-toggle[data-theme-state="dark"] .theme-toggle__icon--moon {
  display: inline-flex;
}

.brand__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.brand__description {
  margin: 0.2rem 0 0;
  color: var(--color-muted);
  max-width: 420px;
  font-size: 0.97rem;
}

.site-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-left: auto;
}

.site-nav__link {
  text-decoration: none;
  color: var(--color-muted);
  font-weight: 500;
  transition: color 0.2s ease;
}

.site-nav__link:hover {
  color: var(--color-primary);
}

.site-header__search {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(37, 99, 235, 0.35);
  text-decoration: none;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.site-header__search:hover {
  background: rgba(37, 99, 235, 0.12);
  border-color: rgba(37, 99, 235, 0.5);
}

.site-header__search svg {
  width: 0.95em;
  height: 0.95em;
}


.main-content {
  flex: 1;
  padding: 1.4rem 0 2rem;
}

.hero {
  background: linear-gradient(145deg, rgba(37, 99, 235, 0.06), rgba(56, 189, 248, 0.06));
  border-radius: var(--radius-lg);
  padding: clamp(1rem, 1.9vw, 1.7rem);
  position: relative;
  overflow: hidden;
  margin-bottom: 1.45rem;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(37, 99, 235, 0.18), transparent 55%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  width: min(100%, 72ch);
  margin: 0 auto;
}

.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-muted-light);
  margin-bottom: 0.35rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.14);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.55rem;
}

.hero__title {
  font-size: clamp(1.65rem, 3.2vw, 2.05rem);
  margin: 0 0 0.55rem;
  line-height: 1.05;
}

.hero__title a {
  text-decoration: none;
  color: inherit;
}

.hero__summary {
  font-size: 0.92rem;
  margin: 0 0 0.7rem;
  color: var(--color-muted);
}

.post-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.86rem;
  color: var(--color-muted);
  margin-bottom: 0.65rem;
}

.post-meta__item,
.post-card__meta-item,
.post__meta-item,
.search-result__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.post__meta-item--tags {
  gap: 0.45rem;
}

.post__meta-item--tags .tag-list {
  margin: 0;
}

.tag-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.2rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag-list li a,
.tag-list li span {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
}

.hero .tag-list {
  margin-bottom: 0.55rem;
}

.tag-list--compact li a {
  padding: 0.22rem 0.5rem;
  font-weight: 500;
  background: rgba(37, 99, 235, 0.08);
}

.tag-list--compact li span {
  padding: 0.22rem 0.5rem;
  font-weight: 500;
  background: rgba(37, 99, 235, 0.08);
}

.tag-list--inline {
  margin: 0;
}

.tag-list--inline li a {
  background: rgba(37, 99, 235, 0.15);
}

.tag-list--cloud li a {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.tag-list--cloud li span {
  color: var(--color-muted-light);
  margin-left: 0.4rem;
  font-weight: 400;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}

.button:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.button svg {
  width: 0.95em;
  height: 0.95em;
}

.button--ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid rgba(37, 99, 235, 0.3);
}

.content-layout {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: minmax(0, 2.3fr) minmax(0, 0.9fr);
}

.posts-grid__list {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.post-card {
  background: var(--color-surface);
  padding: 0.95rem 1.05rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(148, 163, 184, 0.18);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

html.has-js .post-card {
  opacity: 0;
  transform: translateY(12px);
}

html.has-js .post-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html.has-js .post-card {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html.has-js .timeline__item {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.glossary-term {
  position: relative;
  display: inline-block;
  cursor: help;
  color: inherit;
  text-decoration: underline dotted currentColor;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  transition: color 0.2s ease;
  outline: none;
}

.glossary-term:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.glossary-term:hover,
.glossary-term[data-glossary-active="true"],
.glossary-term:focus-visible {
  color: var(--color-primary);
}

.glossary-term__tooltip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.6rem);
  transform: translate(-50%, 6px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(148, 163, 184, 0.3);
  box-shadow: 0 12px 25px rgba(15, 23, 42, 0.18);
  padding: 0.55rem 0.75rem;
  min-width: 10rem;
  max-width: min(22rem, calc(100vw - 2rem));
  font-size: 0.86rem;
  line-height: 1.45;
  z-index: 24;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.glossary-term__tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 6px;
  border-style: solid;
  border-color: var(--color-surface) transparent transparent transparent;
}

html[data-theme="dark"] .glossary-term__tooltip {
  border-color: rgba(148, 163, 184, 0.4);
  box-shadow: 0 20px 40px rgba(2, 6, 23, 0.6);
}

.glossary-term[data-glossary-active="true"] .glossary-term__tooltip,
.glossary-term:focus-visible .glossary-term__tooltip,
.glossary-term:hover .glossary-term__tooltip {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

@media (prefers-reduced-motion: reduce) {
  .glossary-term__tooltip {
    transform: translate(-50%, 0);
    transition: none;
  }
}

.post-card__meta {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.86rem;
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  align-items: center;
}

.post-card__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.24rem 0.55rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.post-card__title {
  margin: 0;
  font-size: 1.28rem;
}

.post-card__title a {
  text-decoration: none;
  color: inherit;
}

.post-card__title a:hover {
  color: var(--color-primary);
}

.post-card__excerpt {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  line-clamp: 3;
  overflow: hidden;
  width: 100%;
}

.post-card__read-more {
  margin-top: auto;
  font-weight: 600;
  text-decoration: none;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.2s ease;
}

.post-card__read-more svg {
  width: 0.95em;
  height: 0.95em;
  transition: transform 0.2s ease;
}

.post-card__read-more:hover svg {
  transform: translateX(3px);
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.sidebar__section {
  background: var(--color-surface);
  padding: 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: var(--shadow-card);
}

.sidebar__section p {
  font-size: 0.9rem;
  line-height: 1.5;
}

.sidebar__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.sidebar__list a {
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.9rem;
}

.sidebar__list a:hover {
  color: var(--color-primary);
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.contact-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.55rem;
  align-items: start;
}

.contact-list__icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.9rem;
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.contact-list__icon svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: currentColor;
}

.contact-list__body {
  display: grid;
  gap: 0.15rem;
}

.contact-list__link {
  color: var(--color-text);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease;
}

.contact-list__link:hover {
  color: var(--color-primary);
}

.contact-list__note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-muted);
  line-height: 1.4;
}

.section-title {
  margin: 0 0 0.65rem;
  font-size: 1.05rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.section-title svg {
  width: 1em;
  height: 1em;
}

.page-header {
  margin-bottom: 1.4rem;
}

.page-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-muted-light);
  margin: 0 0 0.4rem;
}

.page-title {
  margin: 0;
  font-size: clamp(2rem, 4vw, 2.6rem);
}

.page-subtitle {
  margin: 0.5rem 0 0;
  color: var(--color-muted);
}

.tag-collection__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.tag-collection__item a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid rgba(148, 163, 184, 0.18);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tag-collection__item a:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 35px rgba(15, 23, 42, 0.12);
}

.tag-collection__count {
  color: var(--color-muted);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.page,
.post {
  background: var(--color-surface);
  padding: clamp(1.55rem, 2.7vw, 2.4rem);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.search-page__header {
  margin-bottom: 1rem;
}

.search-page__title {
  margin: 0;
  font-size: clamp(1.9rem, 3.6vw, 2.4rem);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.search-page__subtitle {
  margin: 0.3rem 0 0;
  color: var(--color-muted);
}

.search-form {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.search-form__label {
  font-weight: 600;
  color: var(--color-muted);
  font-size: 0.95rem;
  white-space: nowrap;
}

.search-form__input {
  flex: 1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  font-size: 1rem;
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-form__input:focus {
  outline: none;
  border-color: rgba(37, 99, 235, 0.5);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.search-results__empty,
.search-results__error {
  margin: 0;
  color: var(--color-muted);
}

.search-results__error {
  color: #dc2626;
}

.search-results__list {
  display: grid;
  gap: 0.75rem;
}

.search-result {
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.search-result__title {
  margin: 0;
  font-size: 1.25rem;
}

.search-result__title a {
  text-decoration: none;
  color: inherit;
}

.search-result__title a:hover {
  color: var(--color-primary);
}

.search-result__meta {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.search-result__summary {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.5;
}

.search-result__tags {
  margin-top: 0.2rem;
}

.page__header,
.post__header {
  margin-bottom: 1.45rem;
}

.page__title,
.post__title {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 2.8rem);
}

.page__summary,
.post__eyebrow {
  margin: 0.45rem 0 0;
  color: var(--color-muted);
}

.post__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.post__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.85rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.not-found {
  position: relative;
  margin: clamp(4rem, 8vw, 6.5rem) auto;
  max-width: 640px;
  padding: clamp(2.6rem, 6vw, 3.6rem) clamp(2rem, 6vw, 3rem);
  text-align: center;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.22);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.not-found__halo {
  position: absolute;
  inset: 14% 12% 18% 12%;
  background: radial-gradient(circle at 30% 20%, rgba(59, 130, 246, 0.35), transparent 65%),
    radial-gradient(circle at 70% 80%, rgba(14, 165, 233, 0.28), transparent 60%);
  filter: blur(46px);
  opacity: 0.65;
  pointer-events: none;
  z-index: 0;
}

.not-found__code {
  position: relative;
  z-index: 1;
  margin: 0 0 0.6rem;
  font-size: clamp(3.2rem, 10vw, 5.8rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: linear-gradient(120deg, rgba(37, 99, 235, 0.8), rgba(14, 165, 233, 0.6));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.not-found__title {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: clamp(2.1rem, 4vw, 2.7rem);
  font-weight: 700;
  color: var(--color-text);
}

.not-found__summary {
  position: relative;
  z-index: 1;
  margin: 1rem auto 1.8rem;
  max-width: 440px;
  color: var(--color-muted);
  line-height: 1.7;
}

.not-found__actions {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.not-found__actions .button {
  min-width: 9.5rem;
  justify-content: center;
}

@media (max-width: 640px) {
  .not-found {
    margin: 3.2rem auto 4.2rem;
  }

  .not-found__actions {
    flex-direction: column;
    width: 100%;
  }

  .not-found__actions .button {
    width: 100%;
  }
}

.post__layout {
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
  margin-top: 1.6rem;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.post__main {
  flex: 1;
  min-width: 0;
  width: 100%;
  max-width: 100%;
}

.post-content h2,
.post-content h3 {
  scroll-margin-top: 120px;
}

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

.post-toc {
  position: sticky;
  top: 6.5rem;
  max-height: calc(100vh - 7rem);
  overflow: hidden auto;
  width: min(280px, 32vw);
  background: var(--color-surface);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.post-toc__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
}

.post-toc__title {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.post-toc__toggle {
  appearance: none;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: transparent;
  color: var(--color-muted);
  border-radius: 999px;
  padding: 0.25rem 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.post-toc__toggle svg {
  transition: transform 0.2s ease;
}

.post-toc__toggle:hover {
  background: rgba(37, 99, 235, 0.12);
  border-color: rgba(37, 99, 235, 0.5);
  color: var(--color-primary);
}

.post-toc__body {
  font-size: 0.9rem;
  line-height: 1.5;
  display: block;
}

.post-toc__body ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.post-toc__item {
  display: block;
}

.post-toc__item--h3 {
  padding-left: 1.1rem;
  font-size: 0.88rem;
}

.post-toc__body a {
  text-decoration: none;
  color: var(--color-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.1rem 0;
  transition: color 0.2s ease;
}

.post-toc__body a:hover {
  color: var(--color-primary);
}

.post-toc__body a.is-active {
  color: var(--color-primary);
  font-weight: 600;
}

.post-toc.is-collapsed .post-toc__body {
  display: none;
}

.post-toc.is-collapsed .post-toc__toggle svg {
  transform: rotate(180deg);
}

.back-to-top {
  position: fixed;
  right: 2rem;
  bottom: 2rem;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  border: none;
  background: var(--color-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 18px 28px rgba(37, 99, 235, 0.3);
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 40;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  box-shadow: 0 22px 34px rgba(37, 99, 235, 0.4);
}

.back-to-top:focus-visible {
  outline: 3px solid rgba(10, 132, 255, 0.7);
  outline-offset: 2px;
}

.lightbox {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 60;
  padding: 2rem;
  flex-direction: column;
  gap: 0.75rem;
}

.lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__image {
  max-width: min(90vw, 900px);
  max-height: 80vh;
  border-radius: 16px;
  box-shadow: 0 25px 45px rgba(15, 23, 42, 0.35);
}

.lightbox__caption {
  margin: 0;
  color: rgba(226, 232, 240, 0.85);
  text-align: center;
  font-size: 0.95rem;
  max-width: min(70ch, 90vw);
}

.lightbox__close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  border: none;
  background: rgba(15, 23, 42, 0.4);
  color: #e2e8f0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.lightbox__close:hover {
  background: rgba(37, 99, 235, 0.55);
  transform: rotate(90deg);
}

.lightbox__close:focus-visible {
  outline: 3px solid rgba(10, 132, 255, 0.7);
  outline-offset: 2px;
}

html.has-lightbox,
body.has-lightbox {
  overflow: hidden;
}

.post__footer {
  margin-top: 1.6rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.post__neighbors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  margin-top: 1.45rem;
}

.post__neighbor {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.post__neighbor:hover {
  border-color: rgba(37, 99, 235, 0.4);
  transform: translateY(-1px);
}

.post__neighbor-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.post__neighbor-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.3;
}

.post__neighbor svg {
  width: 0.9em;
  height: 0.9em;
}

.post__related {
  margin-top: 1.45rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(148, 163, 184, 0.25);
}

.post__related-title {
  margin: 0 0 0.8rem;
  font-size: 1.25rem;
}

.post__related-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.post__related-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.post__related-item a {
  text-decoration: none;
  font-weight: 600;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.2s ease;
}

.post__related-item a:hover {
  color: var(--color-primary);
}

.post__related-item a svg {
  width: 0.9em;
  height: 0.9em;
  transition: transform 0.2s ease;
}

.post__related-item a:hover svg {
  transform: translateX(3px);
}

.post__related-meta {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.post-content,
.page__content {
  color: #1e293b;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.post-content *,
.page__content * {
  max-width: 100%;
  box-sizing: border-box;
  min-width: 0;
}

.post-content table,
.page__content table {
  display: block;
  width: 100%;
  overflow-x: auto;
}

.post-content code,
.page__content code {
  word-break: break-word;
}

.post-content pre,
.page__content pre {
  max-width: 100%;
}

.post-content h2,
.post-content h3,
.page__content h2,
.page__content h3 {
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.post-content ul,
.page__content ul {
  margin: 0 0 1rem;
  padding-left: 1.4rem;
  list-style: disc;
}

.post-content ol,
.page__content ol {
  margin: 0 0 1rem;
  padding-left: 1.4rem;
  list-style: decimal;
}

.post-content li,
.page__content li {
  margin: 0.35rem 0;
  line-height: 1.6;
}

.post-content ul ul,
.page__content ul ul {
  list-style: circle;
}

.post-content ol ol,
.page__content ol ol {
  list-style: decimal;
}

.post-content pre,
.page__content pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1.05rem;
  overflow-x: auto;
  border-radius: 12px;
}

.post-content code,
.page__content code {
  font-family: "SFMono-Regular", SFMono, ui-monospace, "DejaVu Sans Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.95rem;
}

.code-block {
  margin: 1.2rem 0;
  border-radius: 14px;
  overflow: hidden;
  background: var(--code-bg);
  color: var(--code-text);
  border: 1px solid var(--code-border);
  box-shadow: 0 14px 26px rgba(15, 23, 42, 0.14);
}

.code-block__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1rem;
  background: var(--code-header-bg);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--code-header-text);
}

.code-block__language {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.code-block__copy {
  appearance: none;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(148, 163, 184, 0.18);
  color: inherit;
  border-radius: 999px;
  padding: 0.28rem 0.8rem;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.code-block__copy:hover {
  transform: translateY(-1px);
  background: rgba(10, 132, 255, 0.28);
  border-color: rgba(10, 132, 255, 0.55);
}

.code-block__copy:focus-visible {
  outline: 3px solid rgba(10, 132, 255, 0.6);
  outline-offset: 2px;
}

.code-block__copy.is-copied {
  background: rgba(34, 197, 94, 0.35);
  border-color: rgba(34, 197, 94, 0.65);
  color: #dcfce7;
}

.code-block pre,
.code-block code {
  background: transparent;
  color: inherit;
}

.code-block pre {
  margin: 0;
  padding: 1rem 1.15rem;
  border-radius: 0;
}

.code-block .c,
.code-block .c1,
.code-block .cm,
.code-block .cp,
.code-block .cs {
  color: var(--syntax-comment);
  font-style: italic;
}

.code-block .k,
.code-block .kc,
.code-block .kd,
.code-block .kn,
.code-block .kp,
.code-block .kr,
.code-block .kt,
.code-block .nb,
.code-block .bp {
  color: var(--syntax-keyword);
}

.code-block .o,
.code-block .ow,
.code-block .p {
  color: var(--syntax-operator);
}

.code-block .s,
.code-block .sa,
.code-block .sb,
.code-block .sc,
.code-block .sd,
.code-block .s1,
.code-block .s2,
.code-block .se,
.code-block .sh,
.code-block .si,
.code-block .sr,
.code-block .ss,
.code-block .sx {
  color: var(--syntax-string);
}

.code-block .mi,
.code-block .il,
.code-block .mf,
.code-block .mh,
.code-block .mo {
  color: var(--syntax-number);
}

.code-block .nf,
.code-block .fm {
  color: var(--syntax-function);
}

.code-block .na,
.code-block .nd,
.code-block .nl,
.code-block .nn,
.code-block .nt,
.code-block .nv,
.code-block .vc,
.code-block .vg,
.code-block .vi {
  color: var(--syntax-variable);
}

.code-block .nc,
.code-block .ne {
  color: var(--syntax-constant);
}

.code-block .gi {
  background: rgba(52, 199, 89, 0.16);
  color: #15803d;
}

.code-block .gd {
  background: rgba(255, 69, 58, 0.16);
  color: #b91c1c;
}

.code-block .err {
  background: rgba(255, 69, 58, 0.22);
  color: #b91c1c;
  border-radius: 4px;
  padding: 0 0.15em;
}

.codehilite,
.codehilite pre,
.highlight,
.highlight pre {
  background: transparent;
}

.codehilite table,
.highlight table {
  width: 100%;
  border-collapse: collapse;
}

.codehilite td,
.highlight td {
  vertical-align: top;
}

.codehilite tbody tr:hover,
.highlight tbody tr:hover {
  background: rgba(10, 132, 255, 0.12);
}

.codehilite .linenos,
.highlight .linenos {
  user-select: none;
  text-align: right;
  padding: 0 1rem 0 0.6rem;
  color: rgba(148, 163, 184, 0.65);
  border-right: 1px solid var(--code-border);
}

.codehilite .linenos pre,
.highlight .linenos pre {
  margin: 0;
  padding: 1rem 0;
  background: transparent;
}

.codehilite .code pre,
.highlight .code pre {
  margin: 0;
  padding: 1rem 1.15rem;
  background: transparent;
}

.site-audio {
  position: fixed;
  right: 2rem;
  bottom: 5.5rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  width: min(460px, calc(100vw - 3rem));
  padding: 0.85rem 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 20px 38px rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(18px);
  z-index: 60;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  overflow: visible;
  cursor: grab;
  user-select: none;
}

.site-audio.is-collapsed {
  grid-template-columns: auto;
  gap: 0;
  padding: 0.55rem;
  width: auto;
  cursor: pointer;
  box-shadow: 0 16px 30px rgba(15, 23, 42, 0.18);
  transform: translate3d(0, 0, 0);
}

.site-audio.is-collapsed::before {
  opacity: 0;
}

.site-audio.is-collapsed .site-audio__meta,
.site-audio.is-collapsed .site-audio__controls,
.site-audio.is-collapsed .site-audio__time {
  display: none;
}

.site-audio.is-collapsed .site-audio__cover {
  width: 56px;
  height: 56px;
  border-radius: 999px;
  animation-play-state: paused;
}

.site-audio.is-collapsed .site-audio__cover-blur {
  display: none;
}

.site-audio.is-collapsed[data-collapsed-side="left"] {
  justify-items: flex-start;
}

.site-audio.is-collapsed[data-collapsed-side="right"] {
  justify-items: flex-end;
}

.site-audio::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at 0% 0%, rgba(59, 130, 246, 0.22), transparent 58%),
    radial-gradient(circle at 100% 100%, rgba(14, 165, 233, 0.2), transparent 55%);
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.site-audio:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 44px rgba(15, 23, 42, 0.22);
  border-color: rgba(37, 99, 235, 0.24);
}

.site-audio:hover::before {
  opacity: 0.75;
  transform: scale(1);
}

.site-audio__cover {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(37, 99, 235, 0.16), rgba(59, 130, 246, 0.05));
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border: 1px solid rgba(148, 163, 184, 0.28);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  position: relative;
  overflow: hidden;
  animation: site-audio-cover-spin 14s linear infinite;
  animation-play-state: paused;
}

.site-audio__cover-icon {
  width: 60%;
  height: 60%;
  fill: currentColor;
}

.site-audio__cover-toggle {
  position: absolute;
  inset: -1px;
  border: none;
  padding: 0;
  margin: 0;
  background: transparent;
  color: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.site-audio__cover-toggle:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.4);
  outline-offset: 3px;
}

.site-audio__cover-toggle:hover {
  transform: scale(1.02);
}

.site-audio__cover-toggle:active {
  transform: scale(0.97);
}

.site-audio__cover-toggle .site-audio__icon {
  position: relative;
  z-index: 2;
  width: 1.35rem;
  height: 1.35rem;
}

.site-audio__cover-blur {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.35), rgba(59, 130, 246, 0.28));
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.site-audio__cover-toggle:hover .site-audio__cover-blur {
  opacity: 0.6;
}

.site-audio[data-player-state="playing"]::before {
  opacity: 0.9;
  transform: scale(1);
}

.site-audio[data-player-state="playing"] .site-audio__cover {
  animation-play-state: running;
}

.site-audio[data-player-state="playing"] .site-audio__cover-blur {
  opacity: 0.45;
}

.site-audio[data-player-state="paused"] .site-audio__cover,
.site-audio[data-player-state="ended"] .site-audio__cover {
  animation-play-state: paused;
}

.site-audio[data-player-state="ended"] .site-audio__cover {
  filter: saturate(0.85);
}

.site-audio__meta {
  min-width: 0;
  display: grid;
  gap: 0.45rem;
  user-select: text;
}

.site-audio__title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.site-audio__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-audio__artist {
  font-size: 0.82rem;
  color: var(--color-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-audio__time {
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  color: var(--color-muted-light);
  flex-shrink: 0;
}

.site-audio__progress {
  position: relative;
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.35);
  overflow: hidden;
  cursor: pointer;
  transition: background 0.2s ease;
}

.site-audio__progress:hover {
  background: rgba(59, 130, 246, 0.3);
}

.site-audio__progress:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.4);
  outline-offset: 3px;
}

.site-audio__progress-bar {
  --audio-progress: 0%;
  width: var(--audio-progress);
  height: 100%;
  background: linear-gradient(90deg, #2563eb, #38bdf8);
  border-radius: inherit;
  transition: width 0.2s ease;
}

.site-audio__control {
  appearance: none;
  border: none;
  background: rgba(37, 99, 235, 0.14);
  color: var(--color-primary);
  border-radius: 999px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 10px 18px rgba(37, 99, 235, 0.2);
}

.site-audio__control:hover {
  background: rgba(37, 99, 235, 0.22);
  transform: translateY(-1px);
}

.site-audio__control:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.35);
  outline-offset: 2px;
}

.site-audio__control--mute {
  background: rgba(148, 163, 184, 0.18);
  color: var(--color-muted);
  box-shadow: none;
}

.site-audio__control--mute:hover {
  background: rgba(148, 163, 184, 0.28);
  color: var(--color-primary);
}

.site-audio__icon {
  width: 1.1rem;
  height: 1.1rem;
  fill: currentColor;
}

.site-audio__controls {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.site-audio__volume-shell {
  position: relative;
  display: flex;
  align-items: center;
}

.site-audio__volume {
  position: absolute;
  bottom: calc(100% + 0.75rem);
  right: 50%;
  transform: translateX(50%) translateY(6px) scale(0.94);
  padding: 0.8rem 0.7rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.32);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 22px 44px rgba(15, 23, 42, 0.22);
  backdrop-filter: blur(12px);
  display: flex;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.24s ease;
  z-index: 1;
}

.site-audio__volume::after {
  content: "";
  position: absolute;
  bottom: -7px;
  left: 50%;
  width: 12px;
  height: 12px;
  background: rgba(255, 255, 255, 0.97);
  border-left: 1px solid rgba(148, 163, 184, 0.32);
  border-top: 1px solid rgba(148, 163, 184, 0.32);
  transform: translateX(-50%) rotate(45deg);
  box-shadow: 0 12px 20px rgba(15, 23, 42, 0.18);
  pointer-events: none;
}

.site-audio[data-volume-expanded="true"] .site-audio__volume {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(50%) translateY(0) scale(1);
}

.site-audio__volume-slider {
  --volume-progress: 100%;
  --volume-fill-start: #2563eb;
  --volume-fill-end: #38bdf8;
  --volume-rest: rgba(148, 163, 184, 0.3);
  appearance: none;
  width: 140px;
  height: 30px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--volume-fill-start) 0%,
    var(--volume-fill-end) var(--volume-progress),
    var(--volume-rest) var(--volume-progress),
    var(--volume-rest) 100%
  );
  outline: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  transform: rotate(-90deg);
  transform-origin: center;
}

.site-audio__volume-slider:hover {
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.22);
}

.site-audio__volume-slider:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.4);
  outline-offset: 3px;
}

.site-audio__volume-slider::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 6px 12px rgba(37, 99, 235, 0.26);
  transition: transform 0.2s ease;
}

.site-audio__volume-slider:active::-webkit-slider-thumb {
  transform: scale(1.15);
}

.site-audio__volume-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: none;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 6px 12px rgba(37, 99, 235, 0.26);
  transition: transform 0.2s ease;
}

.site-audio__volume-slider:active::-moz-range-thumb {
  transform: scale(1.15);
}

.site-audio__volume-slider::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: transparent;
}

.site-audio.is-dragging {
  cursor: grabbing;
  transition: none;
  box-shadow: 0 18px 32px rgba(15, 23, 42, 0.26);
}

.site-audio[data-volume-level="muted"] .site-audio__volume-slider {
  --volume-fill-start: rgba(148, 163, 184, 0.3);
  --volume-fill-end: rgba(148, 163, 184, 0.3);
  --volume-rest: rgba(148, 163, 184, 0.3);
}

.site-audio[data-volume-level="low"] .site-audio__volume-slider {
  --volume-fill-start: #38bdf8;
  --volume-fill-end: #38bdf8;
  --volume-rest: rgba(148, 163, 184, 0.3);
}

.site-audio[data-volume-level="medium"] .site-audio__volume-slider {
  --volume-fill-start: #2563eb;
  --volume-fill-end: #38bdf8;
  --volume-rest: rgba(148, 163, 184, 0.28);
}

.site-audio[data-volume-level="high"] .site-audio__volume-slider {
  --volume-fill-start: #2563eb;
  --volume-fill-end: #1d4ed8;
  --volume-rest: rgba(148, 163, 184, 0.25);
}

.site-audio__icon--pause,
.site-audio__icon--muted {
  display: none;
}

.site-audio[data-player-state="playing"] .site-audio__icon--play {
  display: none;
}

.site-audio[data-player-state="playing"] .site-audio__icon--pause {
  display: block;
}

.site-audio[data-muted="true"] .site-audio__icon--volume {
  display: none;
}

.site-audio[data-muted="true"] .site-audio__icon--muted {
  display: block;
}

.site-audio.is-autoplay-blocked .site-audio__title {
  color: #dc2626;
}

.site-audio.is-autoplay-blocked .site-audio__progress {
  background: rgba(220, 38, 38, 0.2);
}

html[data-theme="dark"] .site-audio {
  background: rgba(15, 23, 42, 0.82);
  border-color: rgba(71, 85, 105, 0.45);
  box-shadow: 0 20px 38px rgba(2, 6, 23, 0.65);
}

html[data-theme="dark"] .site-audio::before {
  background: radial-gradient(circle at 0% 0%, rgba(79, 70, 229, 0.32), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(2, 132, 199, 0.28), transparent 52%);
}

html[data-theme="dark"] .site-audio__cover {
  border-color: rgba(71, 85, 105, 0.6);
  background: linear-gradient(145deg, rgba(96, 165, 250, 0.25), rgba(37, 99, 235, 0.08));
}

html[data-theme="dark"] .site-audio__artist,
html[data-theme="dark"] .site-audio__time {
  color: rgba(148, 163, 184, 0.75);
}

html[data-theme="dark"] .site-audio__control--mute {
  background: rgba(148, 163, 184, 0.18);
  color: rgba(191, 219, 254, 0.85);
}

html[data-theme="dark"] .site-audio__control--mute:hover {
  background: rgba(148, 163, 184, 0.26);
}

html[data-theme="dark"] .site-audio__volume-slider {
  --volume-fill-start: rgba(96, 165, 250, 0.75);
  --volume-fill-end: rgba(59, 130, 246, 0.6);
  --volume-rest: rgba(71, 85, 105, 0.55);
}

html[data-theme="dark"] .site-audio__volume {
  background: rgba(15, 23, 42, 0.92);
  border-color: rgba(71, 85, 105, 0.55);
  box-shadow: 0 22px 44px rgba(2, 6, 23, 0.48);
}

html[data-theme="dark"] .site-audio__volume::after {
  background: rgba(15, 23, 42, 0.92);
  border-color: rgba(71, 85, 105, 0.55);
  box-shadow: 0 16px 26px rgba(2, 6, 23, 0.5);
}

html[data-theme="dark"] .site-audio[data-volume-level="muted"] .site-audio__volume-slider {
  --volume-fill-start: rgba(71, 85, 105, 0.55);
  --volume-fill-end: rgba(71, 85, 105, 0.55);
  --volume-rest: rgba(71, 85, 105, 0.55);
}

html[data-theme="dark"] .site-audio[data-volume-level="high"] .site-audio__volume-slider {
  --volume-fill-start: rgba(147, 197, 253, 0.85);
  --volume-fill-end: rgba(96, 165, 250, 0.75);
}

@keyframes site-audio-cover-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 720px) {
  .site-audio {
    right: clamp(0.75rem, 4vw, 1.4rem);
    bottom: 4.5rem;
    width: min(94vw, 380px);
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: 0.75rem;
  }
  .site-audio__cover {
    grid-row: 1 / span 2;
  }
  .site-audio__meta {
    grid-column: 2;
    grid-row: 2;
  }
  .site-audio__controls {
    grid-column: 2;
    grid-row: 1;
  }
}

@media (max-width: 420px) {
  .site-audio {
    width: calc(100vw - 1.5rem);
    right: 0.75rem;
  }
}

@media (max-width: 960px) {
  .site-audio {
    right: 1.25rem;
    left: 1.25rem;
    bottom: 1.25rem;
    width: auto;
    padding: 0.65rem 0.85rem;
  }
  .site-audio__cover {
    width: 48px;
    height: 48px;
  }
  .site-audio__control {
    width: 40px;
    height: 40px;
  }
}


@media (max-width: 460px) {
  .site-audio {
    gap: 0.7rem;
    padding: 0.7rem 0.75rem;
  }
  .site-audio__cover {
    width: 46px;
    height: 46px;
  }
  .site-audio__control,
  .site-audio__control--mute {
    width: 40px;
    height: 40px;
  }
  .site-audio__title-row {
    flex-wrap: wrap;
    row-gap: 0.2rem;
  }
  .site-audio__time {
    order: 2;
    margin-left: auto;
  }
  .site-audio[data-volume-expanded="true"] .site-audio__volume {
    min-width: 100%;
  }
}

.post-content blockquote,
.page__content blockquote {
  border-left: 4px solid rgba(37, 99, 235, 0.4);
  padding-left: 0.75rem;
  color: var(--color-muted);
  font-style: italic;
}

.post-content img[data-lightbox],
.page__content img[data-lightbox] {
  cursor: zoom-in;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border-radius: 12px;
}

.post-content img[data-lightbox]:hover,
.page__content img[data-lightbox]:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(15, 23, 42, 0.14);
}

.archive--timeline {
  position: relative;
  padding-left: clamp(1.8rem, 4vw, 2.8rem);
  margin-top: 2.5rem;
  --timeline-progress: 0;
}

.archive--timeline::before,
.archive--timeline::after {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(0.75rem, 2vw, 1.3rem);
  width: 3px;
  border-radius: 999px;
}

.archive--timeline::before {
  height: 100%;
  background: rgba(148, 163, 184, 0.28);
}

.archive--timeline::after {
  height: calc(var(--timeline-progress) * 100%);
  background: linear-gradient(180deg, var(--color-primary), rgba(10, 132, 255, 0.2));
  transition: height 0.2s ease;
}

.timeline__year-group {
  position: relative;
  padding-left: clamp(1.9rem, 5vw, 3.6rem);
  margin-bottom: 2.2rem;
}

.timeline__year-header {
  position: relative;
  margin-bottom: 1.2rem;
}

.timeline__year-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 1rem;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--color-primary);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.15);
}

.timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 1.2rem;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

html.has-js .timeline__item {
  opacity: 0;
  transform: translateY(12px) scale(0.98);
}

html.has-js .timeline__item.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.timeline__marker {
  position: relative;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 3px solid rgba(37, 99, 235, 0.4);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.25);
  margin-top: 0.65rem;
  justify-self: center;
  align-self: start;
}

.timeline__item.is-visible .timeline__marker {
  border-color: var(--color-primary);
}

.timeline__card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: var(--shadow-card);
  padding: 0.9rem 1rem;
  display: grid;
  gap: 0.55rem;
}

.timeline__card-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: var(--color-muted);
}

.timeline__date {
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.timeline__meta {
  font-size: 0.82rem;
  background: rgba(148, 163, 184, 0.18);
  border-radius: 999px;
  padding: 0.15rem 0.65rem;
}

.timeline__title {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.35;
}

.timeline__title a {
  color: inherit;
  text-decoration: none;
}

.timeline__title a:hover {
  color: var(--color-primary);
}

.timeline__excerpt {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.5;
}

.timeline__link {
  align-self: flex-start;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.timeline__link::after {
  content: "";
  width: 0.75rem;
  height: 0.75rem;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='currentColor' d='M5 12a1 1 0 0 1 1-1h9.586l-2.293-2.293 1.414-1.414L19.414 12l-4.707 4.707-1.414-1.414L15.586 13H6a1 1 0 0 1-1-1z'/%3E%3C/svg%3E") center/contain no-repeat;
  background: currentColor;
  transition: transform 0.2s ease;
}

.timeline__link:hover::after {
  transform: translateX(3px);
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(248, 250, 252, 0.9);
}

.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.15rem;
  padding: 1.25rem 0;
  flex-wrap: wrap;
}

.site-footer__title {
  margin: 0;
  font-weight: 600;
}

.site-footer__description {
  margin: 0.3rem 0 0;
  color: var(--color-muted);
  max-width: 420px;
}

.site-footer__meta {
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  color: var(--color-muted);
}

.site-footer__link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.site-footer__counts {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.site-footer__count-item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

@media (max-width: 960px) {
  .content-layout {
    grid-template-columns: 1fr;
  }
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .site-header__actions {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }
  .site-nav {
    justify-content: flex-start;
    width: 100%;
    margin-left: 0;
  }
  .hero {
    margin-bottom: 3rem;
  }
  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .site-footer__meta {
    text-align: left;
  }
  .post__layout {
    flex-direction: column;
  }
  .post-toc {
    position: static;
    width: 100%;
    max-height: none;
    order: -1;
  }
}

@media (min-width: 1280px) {
  .posts-grid__list {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  }
}

@media (max-width: 640px) {
  .back-to-top {
    right: 1rem;
    bottom: 1.2rem;
    width: 2.4rem;
    height: 2.4rem;
  }
  .lightbox {
    padding: 1rem;
  }
  .archive--timeline {
    padding-left: 1.4rem;
  }
  .archive--timeline::before,
  .archive--timeline::after {
    left: 0.6rem;
  }
  .timeline__year-group {
    padding-left: 1.6rem;
  }
  .timeline__item {
    grid-template-columns: 1fr;
    row-gap: 0.6rem;
  }
  .timeline__marker {
    margin-top: 0.25rem;
    justify-self: flex-start;
  }
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #1c1c1e;
    --color-surface: #2c2c2e;
    --color-text: #f5f5f7;
    --color-muted: #8e8e93;
    --color-muted-light: #d1d1d6;
    --color-border: #3a3a3c;
    --color-overlay: rgba(28, 28, 30, 0.92);
    --color-primary: #0a84ff;
    --color-primary-dark: #0060df;
    --shadow-card: 0 24px 48px rgba(0, 0, 0, 0.6);
    --code-bg: #1f1f21;
    --code-text: #f5f5f7;
    --code-header-bg: rgba(44, 44, 46, 0.85);
    --code-header-text: rgba(226, 232, 240, 0.85);
    --code-border: rgba(99, 99, 102, 0.5);
    --syntax-keyword: #64a9ff;
    --syntax-string: #63e6b0;
    --syntax-number: #ff9f9a;
    --syntax-operator: #ffd479;
    --syntax-comment: #8e8e93;
    --syntax-function: #d3b6ff;
    --syntax-variable: #f5f5f7;
    --syntax-constant: #99caff;
    color-scheme: dark;
  }
  html:not([data-theme]) .site-header {
    background: rgba(28, 28, 30, 0.9);
    border-bottom: 1px solid rgba(84, 84, 88, 0.65);
  }
  html:not([data-theme]) .theme-toggle {
    border: 1px solid rgba(10, 132, 255, 0.45);
    color: #d6e6ff;
  }
  html:not([data-theme]) .theme-toggle:hover {
    background: rgba(118, 118, 128, 0.22);
    border-color: rgba(10, 132, 255, 0.6);
  }
  html:not([data-theme]) .site-header__search {
    border: 1px solid rgba(10, 132, 255, 0.45);
    color: #d6e6ff;
  }
  html:not([data-theme]) .site-header__search:hover {
    background: rgba(118, 118, 128, 0.2);
    border-color: rgba(10, 132, 255, 0.6);
  }
  html:not([data-theme]) .contact-list__icon {
    background: rgba(118, 118, 128, 0.24);
    color: #d6e6ff;
  }
  html:not([data-theme]) .contact-list__note {
    color: #d1d1d6;
  }
  html:not([data-theme]) .site-header.is-condensed {
    background: rgba(32, 32, 34, 0.92);
    border-bottom-color: rgba(84, 84, 88, 0.65);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.45);
  }
  html:not([data-theme]) .hero {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(118, 118, 128, 0.12));
  }
  html:not([data-theme]) .tag-list li a,
  html:not([data-theme]) .tag-list li span {
    background: rgba(118, 118, 128, 0.28);
    color: #f5f5f7;
  }
  html:not([data-theme]) .tag-list--cloud li a {
    background: transparent;
    border: 1px solid rgba(99, 99, 102, 0.6);
    color: var(--color-text);
  }
  html:not([data-theme]) mark {
    background: rgba(10, 132, 255, 0.35);
    color: #f5f5f7;
  }
  html:not([data-theme]) .archive--timeline::before {
    background: rgba(84, 84, 88, 0.55);
  }
  html:not([data-theme]) .timeline__year-badge {
    background: rgba(10, 132, 255, 0.22);
    color: #d6e6ff;
    box-shadow: 0 14px 28px rgba(10, 132, 255, 0.32);
  }
  html:not([data-theme]) .timeline__marker {
    background: var(--color-surface);
    border-color: rgba(10, 132, 255, 0.5);
    box-shadow: 0 14px 26px rgba(10, 132, 255, 0.32);
  }
  html:not([data-theme]) .timeline__meta {
    background: rgba(58, 58, 60, 0.65);
    color: #d1d1d6;
  }
  html:not([data-theme]) .timeline__card {
    border: 1px solid rgba(99, 99, 102, 0.5);
    box-shadow: 0 28px 48px rgba(0, 0, 0, 0.45);
  }
  html:not([data-theme]) .post-card,
  html:not([data-theme]) .sidebar__section,
  html:not([data-theme]) .page,
  html:not([data-theme]) .post {
    border: 1px solid rgba(99, 99, 102, 0.5);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
  }
  html:not([data-theme]) .post__neighbor {
    background: var(--color-surface);
    border: 1px solid rgba(99, 99, 102, 0.5);
  }
  html:not([data-theme]) .post__related {
    border-top: 1px solid rgba(84, 84, 88, 0.6);
  }
  html:not([data-theme]) .post-toc {
    border: 1px solid rgba(84, 84, 88, 0.6);
  }
  html:not([data-theme]) .search-form__input {
    background: var(--color-surface);
    border: 1px solid rgba(84, 84, 88, 0.65);
    color: var(--color-text);
  }
  html:not([data-theme]) .search-result {
    background: var(--color-surface);
    border: 1px solid rgba(84, 84, 88, 0.6);
  }
  html:not([data-theme]) .search-results__error {
    color: #ff453a;
  }
  html:not([data-theme]) .post-content,
  html:not([data-theme]) .page__content {
    color: var(--color-text);
  }
  html:not([data-theme]) .site-footer {
    background: rgba(28, 28, 30, 0.96);
    border-top: 1px solid rgba(84, 84, 88, 0.6);
  }
}

:root[data-theme="dark"] {
  --color-bg: #1c1c1e;
  --color-surface: #2c2c2e;
  --color-text: #f5f5f7;
  --color-muted: #8e8e93;
  --color-muted-light: #d1d1d6;
  --color-border: #3a3a3c;
  --color-overlay: rgba(28, 28, 30, 0.92);
  --color-primary: #0a84ff;
  --color-primary-dark: #0060df;
  --shadow-card: 0 24px 48px rgba(0, 0, 0, 0.6);
  --code-bg: #1f1f21;
  --code-text: #f5f5f7;
  --code-header-bg: rgba(44, 44, 46, 0.85);
  --code-header-text: rgba(226, 232, 240, 0.85);
  --code-border: rgba(99, 99, 102, 0.5);
  --syntax-keyword: #64a9ff;
  --syntax-string: #63e6b0;
  --syntax-number: #ff9f9a;
  --syntax-operator: #ffd479;
  --syntax-comment: #8e8e93;
  --syntax-function: #d3b6ff;
  --syntax-variable: #f5f5f7;
  --syntax-constant: #99caff;
  color-scheme: dark;
}

html[data-theme="dark"] .site-header {
  background: rgba(28, 28, 30, 0.9);
  border-bottom: 1px solid rgba(84, 84, 88, 0.65);
}

html[data-theme="dark"] .site-header.is-condensed {
  background: rgba(32, 32, 34, 0.92);
  border-bottom-color: rgba(84, 84, 88, 0.65);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.45);
}

html[data-theme="dark"] .contact-list__icon {
  background: rgba(118, 118, 128, 0.24);
  color: #d6e6ff;
}

html[data-theme="dark"] .contact-list__note {
  color: #d1d1d6;
}

html[data-theme="dark"] .theme-toggle {
  border: 1px solid rgba(10, 132, 255, 0.45);
  color: #d6e6ff;
}

html[data-theme="dark"] .theme-toggle:hover {
  background: rgba(118, 118, 128, 0.22);
  border-color: rgba(10, 132, 255, 0.6);
}

html[data-theme="dark"] .site-header__search {
  border: 1px solid rgba(10, 132, 255, 0.45);
  color: #d6e6ff;
}

html[data-theme="dark"] .site-header__search:hover {
  background: rgba(118, 118, 128, 0.2);
  border-color: rgba(10, 132, 255, 0.6);
}


html[data-theme="dark"] .hero {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(118, 118, 128, 0.12));
}

html[data-theme="dark"] .tag-list li a,
html[data-theme="dark"] .tag-list li span {
  background: rgba(118, 118, 128, 0.28);
  color: #f5f5f7;
}

html[data-theme="dark"] .tag-list--cloud li a {
  background: transparent;
  border: 1px solid rgba(99, 99, 102, 0.6);
  color: var(--color-text);
}

html[data-theme="dark"] mark {
  background: rgba(10, 132, 255, 0.35);
  color: #f5f5f7;
}

html[data-theme="dark"] .archive--timeline::before {
  background: rgba(84, 84, 88, 0.55);
}

html[data-theme="dark"] .timeline__year-badge {
  background: rgba(10, 132, 255, 0.22);
  color: #d6e6ff;
  box-shadow: 0 14px 28px rgba(10, 132, 255, 0.32);
}

html[data-theme="dark"] .timeline__marker {
  background: var(--color-surface);
  border-color: rgba(10, 132, 255, 0.5);
  box-shadow: 0 14px 26px rgba(10, 132, 255, 0.32);
}

html[data-theme="dark"] .timeline__meta {
  background: rgba(58, 58, 60, 0.65);
  color: #d1d1d6;
}

html[data-theme="dark"] .timeline__card {
  border: 1px solid rgba(99, 99, 102, 0.5);
  box-shadow: 0 28px 48px rgba(0, 0, 0, 0.45);
}

html[data-theme="dark"] .post-card,
html[data-theme="dark"] .sidebar__section,
html[data-theme="dark"] .page,
html[data-theme="dark"] .post {
  border: 1px solid rgba(99, 99, 102, 0.5);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}

html[data-theme="dark"] .post__neighbor {
  background: var(--color-surface);
  border: 1px solid rgba(99, 99, 102, 0.5);
}

html[data-theme="dark"] .post__related {
  border-top: 1px solid rgba(84, 84, 88, 0.6);
}

html[data-theme="dark"] .post-toc {
  border: 1px solid rgba(84, 84, 88, 0.6);
}

html[data-theme="dark"] .search-form__input {
  background: var(--color-surface);
  border: 1px solid rgba(84, 84, 88, 0.65);
  color: var(--color-text);
}

html[data-theme="dark"] .search-result {
  background: var(--color-surface);
  border: 1px solid rgba(84, 84, 88, 0.6);
}

html[data-theme="dark"] .search-results__error {
  color: #ff453a;
}

html[data-theme="dark"] .post-content,
html[data-theme="dark"] .page__content {
  color: var(--color-text);
}

html[data-theme="dark"] .site-footer {
  background: rgba(28, 28, 30, 0.96);
  border-top: 1px solid rgba(84, 84, 88, 0.6);
}