:root {
  --blue: #2f54eb;
  --blue-deep: #1e3fc4;
  --ink: #1f2f66;
  --body: #667085;
  --muted: #98a2b3;
  --card: #faf9fd;
  --line: #e8ecf3;
  --pill: #eef2fe;
  --font: 'Geist', 'Inter', -apple-system, 'Segoe UI', system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  display: block;
}

/* Topbar */
.blog-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 40px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.blog-brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}

.blog-brand span {
  color: var(--blue);
}

.blog-langs {
  display: flex;
  gap: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.blog-langs a.is-active {
  color: var(--blue);
}

/* Category chip nav */
.blog-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 20px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.blog-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--pill);
  color: var(--blue-deep);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.blog-cats a.blog-chip:hover,
.blog-cats a.blog-chip.is-active {
  background: var(--blue);
  color: #fff;
}

a.blog-chip {
  transition: background 0.15s ease, color 0.15s ease;
}

a.blog-chip:hover {
  background: var(--blue);
  color: #fff;
}

/* Cover: localized category label overlaid on the left, illustration on the right of the PNG */
.blog-cover-wrap {
  position: relative;
  display: block;
  container-type: inline-size;
}
.blog-cover-label {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 43%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3cqw;
  padding: 0 5cqw;
  box-sizing: border-box;
  pointer-events: none;
}
.blog-cover-cat {
  font-size: 6.6cqw;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.004em;
  line-height: 1.1;
  color: var(--ink);
}
.blog-cover-cat::after {
  content: "";
  display: block;
  width: 11cqw;
  height: 3px;
  margin-top: 2.4cqw;
  background: var(--blue);
  border-radius: 2px;
}
a.blog-cover-cat {
  pointer-events: auto;
  transition: color 0.15s ease;
}
a.blog-cover-cat:hover {
  color: var(--blue);
}
.blog-cover-brand {
  font-size: 3.2cqw;
  font-weight: 700;
  color: var(--muted);
}

.blog-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 80px;
}

/* Hero */
.blog-hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 32px 0 56px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 48px;
}

.blog-hero-cover {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 20px;
}

.blog-hero-title {
  font-size: 34px;
  line-height: 1.2;
  margin: 16px 0 12px;
}

.blog-hero-summary {
  color: var(--body);
  font-size: 17px;
  margin: 0 0 20px;
}

/* Card grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}

.blog-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(31, 47, 102, 0.1);
}

.blog-card-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.blog-card-body {
  padding: 20px;
}

.blog-card-title {
  font-size: 18px;
  line-height: 1.35;
  margin: 12px 0 8px;
}

.blog-card-summary {
  color: var(--body);
  font-size: 14px;
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
}

.blog-card-author {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Cover fallback */
.blog-cover-fallback {
  width: 100%;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  color: #fff;
  font-size: 48px;
  font-weight: 700;
}

.blog-hero-cover.blog-cover-fallback {
  aspect-ratio: 16 / 10;
  font-size: 72px;
}

.blog-card-cover.blog-cover-fallback {
  aspect-ratio: 16 / 9;
  font-size: 40px;
}

.blog-article-cover.blog-cover-fallback {
  min-height: 320px;
  border-radius: 20px;
  font-size: 80px;
}

/* Avatars */
.blog-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.blog-avatar--sm {
  width: 24px;
  height: 24px;
}

.blog-avatar-initial {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
}

/* Pagination */
.blog-pagination {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  font-weight: 600;
  color: var(--blue);
}

/* Category header */
.blog-cat-head {
  padding: 16px 0 40px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}

.blog-cat-title {
  font-size: 32px;
  margin: 0 0 12px;
}

.blog-cat-description {
  color: var(--body);
  font-size: 16px;
  max-width: 68ch;
  margin: 0 0 8px;
}

.blog-cat-count {
  color: var(--muted);
  font-size: 13px;
}

/* Article */
.blog-article {
  max-width: 760px;
  margin: 0 auto;
}

.blog-article-cover {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: 20px;
  margin-bottom: 24px;
}

.blog-h1 {
  font-size: 38px;
  line-height: 1.2;
  margin: 16px 0 24px;
}

.blog-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.blog-author-info {
  display: flex;
  flex-direction: column;
}

.blog-author-name {
  font-weight: 600;
  color: var(--ink);
}

.blog-author-role {
  font-size: 13px;
  color: var(--muted);
}

.blog-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 32px;
}

.blog-article-body {
  max-width: 68ch;
  font-size: 17px;
  color: #2c3856;
}

.blog-article-body h2 {
  color: var(--ink);
  font-size: 26px;
  margin: 40px 0 16px;
}

.blog-article-body h3 {
  color: var(--ink);
  font-size: 20px;
  margin: 32px 0 12px;
}

.blog-article-body p {
  line-height: 1.7;
  margin: 0 0 20px;
}

.blog-article-body ul,
.blog-article-body ol {
  line-height: 1.7;
  margin: 0 0 20px;
  padding-left: 24px;
}

.blog-article-body hr {
  height: 1px;
  margin: 32px 0;
  border: 0;
  background: var(--line);
}

.blog-article-body blockquote {
  border-left: 3px solid var(--blue);
  margin: 24px 0;
  padding: 4px 20px;
  color: var(--body);
  font-style: italic;
}

.blog-article-body img {
  max-width: 100%;
  border-radius: 12px;
  margin: 24px 0;
}

.blog-article-body table {
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 24px 0;
}

.blog-article-body th,
.blog-article-body td {
  border: 1px solid var(--line);
  padding: 8px 12px;
  text-align: left;
}

.blog-article-body code {
  background: var(--pill);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.9em;
}

.blog-article-body pre {
  background: var(--ink);
  color: #fff;
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
}

.blog-article-body pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* CTA */
.blog-cta {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 32px;
  margin: 48px 0;
  text-align: center;
}

.blog-cta-title {
  font-size: 22px;
  color: var(--ink);
  margin: 0 0 8px;
}

.blog-cta-sub {
  color: var(--body);
  margin: 0 0 20px;
}

.blog-cta-btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 999px;
  transition: background 0.15s ease;
}

.blog-cta-btn:hover {
  background: var(--blue-deep);
}

/* Related */
.blog-related {
  margin: 48px 0;
}

.blog-related-title {
  font-size: 24px;
  margin: 0 0 20px;
}

/* Prev/next */
.blog-prevnext {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-weight: 600;
  color: var(--blue);
}

/* Footer */
.blog-footer {
  padding: 40px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

/* Responsive */
@media (max-width: 900px) {
  .blog-hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .blog-topbar,
  .blog-cats {
    padding-left: 20px;
    padding-right: 20px;
  }

  .blog-main {
    padding-left: 20px;
    padding-right: 20px;
  }

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

  .blog-h1 {
    font-size: 28px;
  }

  .blog-prevnext {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blog-card,
  .blog-cta-btn {
    transition: none;
  }
}

/* Table of contents */
html {
  scroll-behavior: smooth;
}
.blog-article-body h2,
.blog-article-body h3 {
  scroll-margin-top: 90px;
}
.blog-toc {
  margin: 4px 0 36px;
  padding: 20px 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.blog-toc-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.blog-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.blog-toc-list a {
  color: var(--ink);
  text-decoration: none;
  font-size: 16px;
  line-height: 1.35;
}
.blog-toc-list a:hover {
  color: var(--blue);
  text-decoration: underline;
}
.blog-toc-l3 {
  padding-left: 18px;
}
.blog-toc-l3 a {
  color: var(--body);
  font-size: 15px;
}

/* ── Landing-style chrome (header + footer), mirrored from LandingPage.vue ── */
.lg-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(20, 30, 80, 0.06);
}
.lg-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 74px;
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.lg-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}
.lg-logo {
  color: var(--blue);
  display: inline-flex;
}
.lg-brand-name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.lg-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.lg-nav a {
  color: var(--body);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.15s ease;
}
.lg-nav a:hover {
  color: var(--blue);
}
.lg-nav a.is-active {
  color: var(--blue);
  font-weight: 600;
}
.lg-header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.lg-lang {
  position: relative;
}
.lg-lang > summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 38px;
  padding: 0 10px;
  border-radius: 10px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}
.lg-lang > summary::-webkit-details-marker {
  display: none;
}
.lg-lang > summary:hover {
  background: var(--pill);
}
.lg-globe {
  width: 18px;
  height: 18px;
}
.lg-caret {
  width: 14px;
  height: 14px;
  transition: transform 0.15s ease;
}
.lg-lang[open] .lg-caret {
  transform: rotate(180deg);
}
.lg-lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 176px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 6px;
  box-shadow: 0 24px 50px -20px rgba(31, 47, 102, 0.3);
  display: flex;
  flex-direction: column;
  gap: 2px;
  z-index: 60;
}
.lg-lang-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--body);
}
.lg-lang-item:hover {
  background: var(--pill);
}
.lg-lang-item.is-active {
  color: var(--blue);
  font-weight: 600;
  background: var(--pill);
}
.lg-lang-code {
  margin-left: auto;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}
.lg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.lg-btn-ghost {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}
.lg-btn-ghost:hover {
  border-color: #cdd6ea;
  background: #fbfcfe;
}
.lg-btn-cta {
  color: #fff;
  background: linear-gradient(135deg, #3f63f2 0%, #2546c8 100%);
  box-shadow: 0 6px 16px -6px rgba(47, 84, 235, 0.5);
}
.lg-btn-cta:hover {
  background: linear-gradient(135deg, #5176f5 0%, #3355d6 100%);
}
.lg-footer {
  background: #f7f9fc;
  border-top: 1px solid var(--line);
}
.lg-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 40px 40px;
}
.lg-footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
}
.lg-footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}
.lg-footer-brandcol {
  gap: 16px;
}
.lg-footer-tag {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
  max-width: 300px;
  margin: 0;
}
.lg-footer-h {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 4px;
}
.lg-footer-col a {
  color: var(--body);
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s ease;
}
.lg-footer-col a:hover {
  color: var(--blue);
}
.lg-footer-col a svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.lg-footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.lg-footer-copy {
  color: var(--muted);
  font-size: 14px;
}
.lg-footer-legal {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.lg-footer-legal a {
  color: var(--muted);
  font-size: 14px;
  transition: color 0.2s ease;
}
.lg-footer-legal a:hover {
  color: var(--blue);
}
@media (max-width: 980px) {
  .lg-nav {
    display: none;
  }
  .lg-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 720px) {
  .lg-header-inner {
    padding: 0 20px;
    gap: 14px;
  }
  .lg-btn-ghost {
    display: none;
  }
  .lg-footer-inner {
    padding: 48px 20px 32px;
  }
  .lg-footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}