@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("/mobile/fonts/plus-jakarta-sans-latin-wght-normal.woff2") format("woff2");
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
}

:root {
  color-scheme: light;
  --blue: #0052ff;
  --ink: #0c1425;
  --muted: #5d687b;
  --line: rgba(21, 42, 85, 0.14);
  --soft-blue: #eff4ff;
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #f8faff; }
a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 10;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  transform: translateY(-160%);
}

.skip-link:focus { transform: none; }

.blog-header,
.blog-footer {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.9);
}

.blog-header {
  position: sticky;
  z-index: 5;
  top: 0;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.blog-nav,
.blog-footer-inner {
  display: flex;
  width: min(1120px, calc(100% - 40px));
  margin: auto;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.blog-nav { min-height: 76px; }

.blog-brand img {
  display: block;
  width: 152px;
  height: auto;
}

.blog-nav-links,
.blog-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  font-weight: 650;
}

.blog-nav a,
.blog-footer a { text-decoration: none; }
.blog-nav a:hover,
.blog-nav a:focus-visible,
.blog-footer a:hover,
.blog-footer a:focus-visible { color: var(--blue); }

.blog-shell {
  width: min(1120px, calc(100% - 40px));
  margin: auto;
  padding: clamp(72px, 10vw, 128px) 0;
}

.blog-hero {
  display: grid;
  max-width: 800px;
  gap: 20px;
}

.blog-kicker,
.post-meta,
.model-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.blog-kicker {
  margin: 0;
  color: var(--blue);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.blog-hero h1,
.article-header h1 {
  margin: 0;
  max-width: 16ch;
  font-size: clamp(44px, 7.5vw, 84px);
  font-weight: 570;
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.blog-hero > p:last-child,
.article-dek {
  margin: 0;
  max-width: 66ch;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.65;
}

.post-list {
  display: grid;
  gap: 18px;
  margin-top: clamp(56px, 8vw, 100px);
}

.post-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  padding: clamp(28px, 5vw, 52px);
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 26px 70px rgba(21, 43, 89, 0.08);
}

.post-card:hover,
.post-card:focus-visible {
  border-color: rgba(0, 82, 255, 0.4);
  transform: translateY(-2px);
}

.post-card h2 {
  max-width: 22ch;
  margin: 12px 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.post-card p { max-width: 62ch; margin: 0; color: var(--muted); line-height: 1.6; }
.post-card-arrow { align-self: center; color: var(--blue); font-size: 34px; }

.article-shell {
  width: min(760px, calc(100% - 40px));
  margin: auto;
  padding: clamp(68px, 9vw, 120px) 0;
}

.article-header { display: grid; gap: 22px; }
.article-header h1 { max-width: 13ch; }

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  color: var(--muted);
  font-size: 12px;
}

.article-body {
  margin-top: clamp(56px, 8vw, 88px);
  font-size: 17px;
  line-height: 1.78;
}

.article-body h2 {
  margin: 2.4em 0 0.65em;
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.article-body h3 { margin: 1.8em 0 0.5em; font-size: 22px; }
.article-body p { color: #344057; }
.article-body a { color: var(--blue); text-underline-offset: 0.18em; }
.article-body li { margin: 0.55em 0; color: #344057; }
.article-body code { overflow-wrap: anywhere; }

.article-faq {
  display: grid;
  gap: 18px;
  margin: 28px 0;
}

.article-faq > div {
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.article-faq dt { font-weight: 750; }
.article-faq dd { margin: 8px 0 0; color: #344057; }

.command-block {
  position: relative;
  margin: 26px 0;
  padding: 22px;
  overflow-x: auto;
  color: #eaf0ff;
  background: #111827;
  border-radius: 14px;
  font: 14px/1.8 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0;
}

.model-card {
  min-width: 0;
  padding: 18px;
  background: var(--soft-blue);
  border: 1px solid rgba(0, 82, 255, 0.14);
  border-radius: 14px;
}

.model-card strong { display: block; font-size: 16px; }
.model-id { display: block; margin-top: 8px; overflow-wrap: anywhere; color: var(--blue); font-size: 11px; }

.article-note {
  margin: 30px 0;
  padding: 20px 22px;
  color: #344057;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: 0 12px 12px 0;
}

.article-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.article-cta a {
  padding: 13px 17px;
  text-decoration: none;
  border: 1px solid var(--blue);
  border-radius: 9px;
  font-weight: 700;
}

.article-cta a:first-child { color: #fff; background: var(--blue); }

.blog-footer { border-top: 1px solid var(--line); }
.blog-footer-inner { min-height: 108px; color: var(--muted); font-size: 12px; }

@media (max-width: 680px) {
  .blog-nav,
  .blog-footer-inner { width: min(100% - 28px, 1120px); }
  .blog-nav { min-height: 68px; }
  .blog-brand img { width: 128px; }
  .blog-nav-links a:not(:last-child) { display: none; }
  .blog-shell,
  .article-shell { width: min(100% - 28px, 760px); }
  .post-card { grid-template-columns: 1fr; }
  .post-card-arrow { display: none; }
  .model-grid { grid-template-columns: 1fr; }
  .blog-footer-inner { align-items: flex-start; flex-direction: column; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .post-card { transform: none !important; }
}