:root {
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-tint: #eff4ff;
  --ink: #0a0a0a;
  --ink-2: #1f2024;
  --muted: #6b6d75;
  --muted-2: #78797f;
  --muted-on-dark: #a8a9ae;
  --green: #10b981;
  --green-tint: #ecfdf5;
  --line: #ececee;
  --line-2: #f4f4f5;
  --bg: #fbfbfa;
  --card: #ffffff;
  --serif: 'Plus Jakarta Sans', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --sans: 'Plus Jakarta Sans', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(14,14,20,.04), 0 1px 1px rgba(14,14,20,.03);
  --shadow: 0 1px 2px rgba(14,14,20,.04), 0 8px 24px -6px rgba(14,14,20,.08);
  --shadow-lg: 0 2px 4px rgba(14,14,20,.04), 0 24px 48px -16px rgba(14,14,20,.14);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }

/* ---------- NAV (matches site) ---------- */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(251,251,250,0.78);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between; height: 68px;
}
.brand {
  display: flex; align-items: center; gap: 9px;
  color: var(--ink);
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-weight: 700; font-size: 17px; letter-spacing: -0.02em;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: url('logo-128.png') center/contain no-repeat;
  flex-shrink: 0;
}
.brand-mark::after { display: none; }
.brand-mark span { display: none; }
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-links a {
  font-size: 14px; color: var(--ink-2); padding: 8px 14px; border-radius: 8px;
  transition: background .15s; text-decoration: none;
}
.nav-links a:hover { background: var(--line-2); text-decoration: none; }
.nav-links a.active { color: var(--ink); background: var(--line-2); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.nav-right .signin { font-size: 14px; color: var(--ink-2); padding: 8px 12px; border-radius: 8px; text-decoration: none; }
.nav-right .signin:hover { background: var(--line-2); text-decoration: none; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 500; font-size: 14px; padding: 10px 16px; border-radius: 10px;
  border: 1px solid transparent; transition: background .15s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #1a1a1a; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; color: var(--ink-2); border-color: var(--line); }
.btn-ghost:hover { background: var(--line-2); border-color: #e0e0e3; }
.btn-lg { padding: 14px 22px; font-size: 15px; border-radius: 12px; }

/* ---------- BLOG HERO ---------- */
.blog-hero {
  position: relative;
  padding: 80px 0 32px;
  overflow: hidden;
  text-align: center;
}
.blog-hero::before {
  content: "";
  position: absolute;
  inset: -40px 0 0 0;
  background:
    radial-gradient(900px 360px at 50% 0%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.blog-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: center;
  mask-image: radial-gradient(540px 280px at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(540px 280px at 50% 30%, #000 30%, transparent 75%);
  opacity: .5;
  pointer-events: none;
  z-index: 0;
}
.blog-hero .container { position: relative; z-index: 1; }
.blog-eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.blog-hero h1 {
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(44px, 6vw, 76px);
  letter-spacing: -0.035em;
  line-height: 1;
  margin: 0 0 22px;
  color: var(--ink);
}
.blog-hero .lede {
  max-width: 620px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- FEATURED ARTICLE ---------- */
.featured-wrap { padding: 36px 0 0; }
.featured {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease;
}
.featured:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}
.featured-img {
  position: relative;
  background: var(--line-2);
  min-height: 380px;
  overflow: hidden;
}
.featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}
.featured-body {
  padding: 44px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.tag {
  display: inline-block;
  align-self: flex-start;
  background: var(--green-tint);
  color: var(--green);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  letter-spacing: 0.01em;
  margin-bottom: 22px;
}
.tag.muted { background: var(--line-2); color: var(--ink-2); }
.tag.accent { background: var(--accent-tint); color: var(--accent); }
.featured h2 {
  font-family: var(--sans);
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 18px;
  color: var(--ink);
}
.featured p {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.6;
  margin: 0 0 28px;
}
.featured .meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ---------- ALL ARTICLES ---------- */
.all-articles { padding: 80px 0 100px; }
.all-articles h3 {
  font-family: var(--sans);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 28px;
  color: var(--ink);
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.article-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  color: inherit;
}
.article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: #dcdcde;
  text-decoration: none;
}
.article-card .card-img {
  aspect-ratio: 16/10;
  background: var(--line-2);
  overflow: hidden;
  position: relative;
}
.article-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}
.article-card:hover .card-img img { transform: scale(1.03); }
.article-card .card-body {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.article-card h4 {
  font-family: var(--sans);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 14px 0 10px;
  color: var(--ink);
}
.article-card .excerpt {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.55;
  margin: 0 0 18px;
  flex: 1;
}
.article-card .card-meta {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.02em;
  margin-top: auto;
}

/* ---------- ARTICLE PAGE ---------- */
.article-hero {
  padding: 56px 0 32px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.crumbs {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 22px;
  letter-spacing: 0.02em;
}
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--ink-2); }
.crumbs .sep { margin: 0 8px; color: var(--line); }
.article-hero .container { max-width: 860px; }
.article-hero h1 {
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(34px, 4.6vw, 56px);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 14px 0 20px;
  color: var(--ink);
}
.article-hero .lede {
  font-size: 19px;
  color: var(--muted);
  line-height: 1.55;
  margin: 0 0 30px;
  max-width: 720px;
}
.byline {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-2);
}
.author-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  display: grid; place-items: center;
  color: #fff; font-weight: 600; font-size: 14px;
  flex-shrink: 0;
}
.byline .author-name { font-weight: 600; color: var(--ink); }
.byline .byline-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.article-cover {
  max-width: 860px;
  margin: 36px auto 0;
  padding: 0 28px;
}
.article-cover img {
  width: 100%;
  height: auto;
  max-height: 460px;
  object-fit: cover;
  object-position: top center;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--line-2);
}

.article-body {
  padding: 56px 0 80px;
}
.article-body .container { max-width: 760px; }
.prose p,
.prose ul,
.prose ol,
.prose blockquote { margin: 0 0 20px; }
.prose p {
  font-size: 17px;
  color: var(--ink-2);
  line-height: 1.75;
}
.prose h2 {
  font-family: var(--sans);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 48px 0 16px;
  color: var(--ink);
}
.prose h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 32px 0 12px;
  color: var(--ink);
}
.prose ul, .prose ol { padding-left: 24px; }
.prose li {
  font-size: 17px;
  color: var(--ink-2);
  line-height: 1.7;
  padding: 4px 0;
}
.prose li::marker { color: var(--accent); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 22px;
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.45;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.prose hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 40px 0;
}

/* CTA at the end of an article */
.article-cta {
  margin: 56px 0 0;
  padding: 36px 36px;
  border-radius: 18px;
  background: var(--ink);
  color: #fff;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
}
.article-cta h3 {
  font-family: var(--sans);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 6px;
}
.article-cta p {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted-on-dark);
}
.article-cta .btn-accent { white-space: nowrap; }

/* Related */
.related {
  border-top: 1px solid var(--line);
  padding: 64px 0 96px;
}
.related h3 {
  font-family: var(--sans);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 28px;
}
.related .article-grid { grid-template-columns: repeat(3, 1fr); }

/* ---------- FOOTER (matches site) ---------- */
footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--line);
}
.foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}
.foot-about { max-width: 320px; }
.foot-about p {
  font-size: 13px;
  color: var(--muted);
  margin: 16px 0 0;
  line-height: 1.5;
}
.foot-col h6 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 16px;
  font-weight: 500;
}
.foot-col a {
  display: block;
  font-size: 13.5px;
  color: var(--ink-2);
  padding: 5px 0;
  transition: color .15s;
  text-decoration: none;
}
.foot-col a:hover { color: var(--accent); text-decoration: none; }
.foot-bot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
  font-family: var(--mono);
}
.foot-bot a { margin-left: 18px; color: var(--muted); text-decoration: none; }
.foot-bot a:hover { color: var(--ink); text-decoration: none; }

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  z-index: 9999;
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

/* Focus */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
a:focus:not(:focus-visible), button:focus:not(:focus-visible) { outline: none; }

/* Responsive */
@media (max-width: 960px) {
  .featured { grid-template-columns: 1fr; }
  .featured-img { min-height: 260px; }
  .featured-body { padding: 32px 28px; }
  .article-grid, .related .article-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
  .nav-links { display: none; }
  .blog-hero { padding: 56px 0 24px; }
  .featured-body { padding: 26px 22px; }
  .article-grid, .related .article-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; margin-bottom: 40px; }
  .foot-bot { flex-direction: column; gap: 10px; align-items: flex-start; }
  .foot-bot a:first-child { margin-left: 0; }
  .article-cta { grid-template-columns: 1fr; padding: 28px 24px; }
  .container { padding: 0 18px; }
}