:root {
  --measure: 42.5rem;
}

/* ── Header ───────────────────────────────────────────────────────────── */

.blog-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: var(--header-h);
  padding-inline: var(--gutter);
  background: rgba(15, 13, 19, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--separator);
}

.blog-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--ink);
  flex-shrink: 0;
}

.blog-header .brand img {
  width: 1.25rem;
  height: auto;
}

.blog-header nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.875rem;
  font-weight: 650;
  letter-spacing: -0.004em;
  color: var(--ink);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  mask-image: linear-gradient(90deg, transparent, #000 0.75rem);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 0.75rem);
}

.blog-header nav::-webkit-scrollbar {
  display: none;
}

.blog-header nav a {
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}

.blog-header nav a:hover {
  color: var(--accent);
}

/* ── Article ──────────────────────────────────────────────────────────── */

.post,
.blog-list {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 4.5rem) var(--gutter) clamp(4rem, 8vw, 6rem);
}

.post h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.026em;
  margin-bottom: 0.625rem;
  text-wrap: balance;
}

.post .meta {
  font-size: 0.8125rem;
  letter-spacing: 0.004em;
  color: var(--ink-3);
  margin-bottom: clamp(2rem, 4vw, 2.75rem);
  padding-bottom: clamp(2rem, 4vw, 2.75rem);
  border-bottom: 1px solid var(--separator);
}

.post h2 {
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: clamp(2.5rem, 5vw, 3.25rem) 0 0.875rem;
  text-wrap: balance;
}

.post h3 {
  font-size: 1.1875rem;
  line-height: 1.3;
  letter-spacing: -0.014em;
  margin: 1.875rem 0 0.625rem;
}

.post p,
.post li {
  font-size: 1.125rem;
  line-height: 1.68;
  letter-spacing: -0.009em;
  color: var(--ink);
  text-wrap: pretty;
}

.post p {
  margin-bottom: 1.25rem;
}

.post ul,
.post ol {
  padding-left: 1.375rem;
  margin-bottom: 1.25rem;
}

.post li {
  margin-bottom: 0.625rem;
}

.post li::marker {
  color: var(--ink-3);
}

.post a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.1875rem;
  text-decoration-color: rgba(162, 56, 255, 0.35);
  transition: text-decoration-color 0.2s var(--ease);
}

.post a:hover {
  text-decoration-color: currentColor;
}

.post strong {
  font-weight: 600;
}

.post pre {
  background: var(--bg-2);
  border-radius: var(--r-sm);
  padding: 0.875rem 1rem;
  overflow-x: auto;
  margin-bottom: 1.25rem;
}

.post code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.875rem;
  color: var(--ink);
}

.post table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.post th,
.post td {
  text-align: left;
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--separator);
  letter-spacing: -0.006em;
}

.post th {
  font-weight: 600;
  color: var(--ink-2);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

/* ── Index list ───────────────────────────────────────────────────────── */

.blog-list h1 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  line-height: 1.06;
  letter-spacing: -0.028em;
  margin-bottom: 0.625rem;
}

.blog-list > p {
  font-size: 1.1875rem;
  line-height: 1.5;
  letter-spacing: -0.011em;
  color: var(--ink-2);
  margin-bottom: clamp(2rem, 4vw, 2.75rem);
  max-width: 46ch;
}

.card-link {
  display: block;
  border-radius: var(--r-lg);
  background: var(--card-dark);
  padding: 1.375rem 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--ink);
  transition:
    transform 0.4s var(--ease-out),
    background-color 0.3s var(--ease);
}

.card-link:hover {
  background: var(--card-darker);
  transform: translateY(-0.125rem);
}

.card-link:active {
  transform: scale(0.99);
  transition-duration: 0.1s;
}

.card-link h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.018em;
  margin-bottom: 0.375rem;
}

.card-link p {
  font-size: 0.9375rem;
  line-height: 1.5;
  letter-spacing: -0.004em;
  color: var(--ink-2);
}

/* ── Footer ───────────────────────────────────────────────────────────── */

.blog-page-footer {
  padding-block: 0 2rem;
}

.blog-page-footer .footer-hub,
.blog-page-footer .footer-bottom {
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.blog-page-footer .footer-hub {
  grid-template-columns: 1fr 1fr;
  padding-top: clamp(2.5rem, 5vw, 3.5rem);
}

.blog-page-footer .footer-brand {
  grid-column: 1 / -1;
}

@media (max-width: 35rem) {
  .blog-page-footer .footer-hub {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card-link:hover,
  .card-link:active {
    transform: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .blog-header {
    background: #0f0d13;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@media (prefers-contrast: more) {
  .blog-header {
    background: var(--bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .card-link {
    border: 1px solid var(--separator-strong);
  }
}