:root {
  /* Colors — dark, single vivid accent */
  --bg: oklch(0.165 0.008 260);
  --bg-elev: oklch(0.20 0.009 260);
  --bg-elev-2: oklch(0.235 0.010 260);
  --line: oklch(0.30 0.010 260);
  --line-soft: oklch(0.26 0.010 260);
  --text: oklch(0.96 0.003 260);
  --text-2: oklch(0.78 0.010 260);
  --text-3: oklch(0.58 0.012 260);
  --text-4: oklch(0.44 0.012 260);

  --accent-h: 75;          /* warm amber / gold */
  --accent: oklch(0.80 0.17 var(--accent-h));
  --accent-dim: oklch(0.65 0.14 var(--accent-h));
  --accent-bg: oklch(0.80 0.17 var(--accent-h) / 0.10);
  --accent-border: oklch(0.80 0.17 var(--accent-h) / 0.30);

  --ok: oklch(0.78 0.14 155);
  --warn: oklch(0.72 0.17 35);

  /* Type */
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Density */
  --pad-section: 140px;
  --container: 1280px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: var(--sans); }
body {
  font-size: 15px; line-height: 1.55; letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Subtle grid background */
.grid-bg {
  background-image:
    linear-gradient(to right, oklch(0.30 0.010 260 / 0.35) 1px, transparent 1px),
    linear-gradient(to bottom, oklch(0.30 0.010 260 / 0.35) 1px, transparent 1px);
  background-size: 64px 64px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* Typography */
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

h1, h2, h3, h4 { margin: 0; letter-spacing: -0.03em; font-weight: 500; }
h1 { font-size: clamp(48px, 6.2vw, 88px); line-height: 0.98; letter-spacing: -0.045em; font-weight: 500; }
h2 { font-size: clamp(36px, 4.2vw, 56px); line-height: 1.02; letter-spacing: -0.035em; }
h3 { font-size: 20px; line-height: 1.3; letter-spacing: -0.02em; }

.lead { font-size: 18px; color: var(--text-2); line-height: 1.55; max-width: 52ch; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-radius: 8px;
  font-family: var(--sans); font-size: 14px; font-weight: 500;
  border: 1px solid transparent;
  transition: all 140ms ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: oklch(0.18 0.02 260); }
.btn-ghost {
  background: transparent; color: var(--text-2);
  border-color: var(--line);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-3); background: oklch(0.25 0.010 260 / 0.4); }
.btn-accent {
  background: var(--accent); color: oklch(0.18 0.02 260);
  border-color: var(--accent);
}
.btn-accent:hover { background: oklch(0.85 0.17 var(--accent-h)); }

/* Cards / tiles */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
}

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  background: oklch(0.165 0.008 260 / 0.7);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  max-width: var(--container); margin: 0 auto;
  padding: 14px 32px;
  display: flex; align-items: center; gap: 32px;
}
.logo {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 14px; font-weight: 500;
  letter-spacing: -0.01em;
}
.logo-mark {
  width: 20px; height: 20px; position: relative;
}
.nav-links {
  display: flex; gap: 24px; margin-left: auto;
  font-size: 14px; color: var(--text-2);
}
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 8px; }

/* Section */
section { padding: var(--pad-section) 0; position: relative; }
.section-head { max-width: 720px; margin-bottom: 64px; }
.section-head .eyebrow { margin-bottom: 20px; }

/* Footer */
footer {
  padding: 80px 0 48px;
  border-top: 1px solid var(--line-soft);
  color: var(--text-3); font-size: 13px;
}

/* Utility */
.mono { font-family: var(--mono); }
.accent { color: var(--accent); }
.muted { color: var(--text-3); }
.hairline { border-top: 1px solid var(--line-soft); }

/* Tag / chip */
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 100px;
  background: var(--bg-elev); border: 1px solid var(--line-soft);
  font-family: var(--mono); font-size: 11px;
  color: var(--text-2);
  letter-spacing: 0.02em;
}
.tag.accent { background: var(--accent-bg); border-color: var(--accent-border); color: var(--accent); }

/* Animations */
@keyframes pyramidSpin { to { transform: rotate(360deg); } }
.spin-dot { width: 10px; height: 10px; border: 1.5px solid var(--accent); border-top-color: transparent; border-radius: 50%; display: inline-block; animation: pyramidSpin 900ms linear infinite; }
@keyframes cursorBlink { 0%,49%{opacity:1;} 50%,100%{opacity:0;} }
.caret { display: inline-block; width: 2px; background: var(--accent); height: 1em; vertical-align: -2px; animation: cursorBlink 900ms steps(1) infinite; }

/* Feature cards */
.feature-card { transition: background 160ms ease; }
.feature-card:hover { background: oklch(0.19 0.009 260) !important; }

/* Hero background */
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 0%, oklch(0.80 0.17 75 / 0.08), transparent 60%),
    radial-gradient(ellipse at 10% 20%, oklch(0.55 0.12 260 / 0.06), transparent 50%);
}

/* Blog — post rows */
.post-row {
  display: grid;
  grid-template-columns: 110px 1fr 230px;
  gap: 32px;
  padding: 24px 0;
  border-top: 1px solid var(--line-soft);
  align-items: start;
  text-decoration: none;
  color: inherit;
  transition: background 140ms ease;
}
.post-row:hover { background: oklch(0.19 0.009 260); }
.post-row:hover .post-title { color: var(--accent); }
.post-row:hover .arrow { transform: translateX(4px); color: var(--accent); }
.post-title { font-size: 20px; letter-spacing: -0.02em; line-height: 1.3; margin: 6px 0 10px; transition: color 160ms ease; }
.post-dek { color: var(--text-3); font-size: 14px; line-height: 1.6; max-width: 62ch; }
.post-meta-left { padding: 2px 0 0; }
.post-meta-right { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; padding: 2px 0 0; }
.arrow { transition: transform 160ms ease, color 160ms ease; color: var(--text-3); }

/* Blog — featured card */
.featured {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px;
  padding: 48px; border: 1px solid var(--line);
  border-radius: 16px; background: oklch(0.18 0.008 260);
  position: relative; overflow: hidden; margin-bottom: 64px;
}
.featured::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse at 90% 10%, oklch(0.80 0.17 75 / 0.12), transparent 60%);
}

/* Blog — filter chips */
.filter-chip {
  padding: 6px 12px; border-radius: 100px;
  background: transparent; border: 1px solid var(--line);
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--text-2); cursor: pointer;
  transition: all 140ms ease;
  white-space: nowrap;
}
.filter-chip:hover { border-color: var(--text-3); color: var(--text); }
.filter-chip.active { background: var(--text); color: var(--bg); border-color: var(--text); }

/* Blog — prose (article body) */
.prose { color: var(--text-2); font-size: 17px; line-height: 1.72; max-width: 70ch; }
.prose h2 { margin: 56px 0 16px; font-size: 28px; color: var(--text); letter-spacing: -0.02em; }
.prose h3 { margin: 36px 0 12px; font-size: 20px; color: var(--text); }
.prose p { margin: 0 0 20px; }
.prose a { color: var(--accent); border-bottom: 1px solid var(--accent-border); }
.prose code { font-family: var(--mono); font-size: 0.88em; background: var(--bg-elev); padding: 2px 6px; border-radius: 4px; color: var(--text); }
.prose pre {
  background: oklch(0.14 0.008 260); border: 1px solid var(--line-soft);
  border-radius: 10px; padding: 20px 22px;
  font-family: var(--mono); font-size: 13px; line-height: 22px;
  overflow-x: auto; margin: 28px 0;
}
.prose blockquote {
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 24px; margin: 28px 0;
  color: var(--text); font-size: 19px; letter-spacing: -0.01em;
}
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 8px; }
.prose hr { border: none; border-top: 1px solid var(--line-soft); margin: 48px 0; }

/* Blog — comparison tables */
.prose .cmp-table {
  width: 100%;
  margin: 32px 0;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  overflow: hidden;
  background: oklch(0.155 0.008 260);
  font-size: 14px;
}
.prose .cmp-table .cmp-head {
  display: grid;
  padding: 14px 20px;
  background: oklch(0.18 0.008 260);
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--mono);
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-3);
  align-items: center;
}
.prose .cmp-table .cmp-head .cmp-col-b { color: oklch(0.70 0.10 25); }
.prose .cmp-table .cmp-head .cmp-col-c { color: var(--accent); }
.prose .cmp-table .cmp-row {
  display: grid;
  padding: 14px 20px;
  border-top: 1px solid oklch(0.24 0.006 260);
  align-items: center;
  gap: 12px;
  transition: background 120ms;
}
.prose .cmp-table .cmp-row:hover { background: oklch(0.18 0.008 260); }
.prose .cmp-table .cmp-row .cmp-feat { color: var(--text); font-weight: 500; }
.prose .cmp-table .cmp-cell { display: flex; align-items: center; gap: 10px; color: var(--text-2); line-height: 1.4; }
.prose .cmp-table .cmp-cell.neg { color: var(--text-3); }
.cmp-mark {
  width: 16px; height: 16px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-family: var(--mono); font-size: 10px; font-weight: 600;
}
.cmp-mark.yes { background: oklch(0.30 0.10 155); color: oklch(0.86 0.14 155); }
.cmp-mark.no  { background: oklch(0.28 0.08 25);  color: oklch(0.82 0.14 25); }
.cmp-mark.warn { background: oklch(0.30 0.10 75);  color: oklch(0.86 0.14 75); }

/* Blog — regular data tables */
.prose table {
  width: 100%;
  margin: 32px 0;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  overflow: hidden;
  font-size: 14px;
}
.prose table th,
.prose table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid oklch(0.24 0.006 260);
}
.prose table tr:last-child td { border-bottom: none; }
.prose table th {
  background: oklch(0.18 0.008 260);
  font-family: var(--mono);
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-3); font-weight: 500;
}
.prose table td { color: var(--text-2); background: oklch(0.155 0.008 260); }

/* Blog — table of contents */
.toc { position: sticky; top: 96px; font-family: var(--mono); font-size: 12px; }
.toc a { display: block; padding: 6px 0; color: var(--text-3); border-left: 1px solid var(--line-soft); padding-left: 14px; transition: all 140ms; }
.toc a:hover { color: var(--text); border-left-color: var(--text-3); }
.toc a.active { color: var(--accent); border-left-color: var(--accent); }

/* ─────────────────────────────────────────────────────────────
   Hamburger menu
   ───────────────────────────────────────────────────────────── */
.nav-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: none; border: 1px solid var(--line);
  border-radius: 8px; color: var(--text);
  font-size: 18px; cursor: pointer;
  transition: border-color 140ms ease;
}
.nav-hamburger:hover { border-color: var(--text-3); }

.mobile-menu {
  display: none;
  position: fixed; top: 61px; left: 0; right: 0;
  z-index: 99;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line-soft);
  padding: 16px 20px 24px;
  flex-direction: column; gap: 4px;
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  display: block; padding: 12px 16px;
  font-size: 15px; color: var(--text-2);
  border-radius: 8px;
  transition: background 140ms ease, color 140ms ease;
}
.mobile-menu a:hover { background: var(--bg-elev-2); color: var(--text); }
.mobile-menu .btn {
  margin-top: 8px; text-align: center;
  justify-content: center;
}
.mobile-menu .btn-primary {
  background: var(--text); color: var(--bg);
  border-color: var(--text);
}
.mobile-menu .btn-primary:hover {
  background: var(--accent); border-color: var(--accent);
  color: oklch(0.18 0.02 260);
}

/* ─────────────────────────────────────────────────────────────
   Responsive — tablet (≤1024px)
   ───────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root { --pad-section: 96px; }
  .container { padding: 0 24px; }
  h1 { font-size: clamp(40px, 7vw, 64px); }
  h2 { font-size: clamp(30px, 5vw, 44px); }
}

/* ─────────────────────────────────────────────────────────────
   Responsive — mobile (≤760px)
   ───────────────────────────────────────────────────────────── */
@media (max-width: 760px) {
  :root { --pad-section: 72px; }
  body { font-size: 14px; }
  .container { padding: 0 20px; }

  /* Comparison tables */
  .prose .cmp-table { font-size: 12px; }
  .prose .cmp-table .cmp-head,
  .prose .cmp-table .cmp-row { padding: 12px 14px; gap: 10px; }
  .prose .cmp-table .cmp-head { font-size: 9.5px; letter-spacing: 0.06em; }
  .cmp-mark { width: 14px; height: 14px; font-size: 9px; }
  .prose .cmp-cell span { word-break: break-word; }

  /* Nav: hide link list, show hamburger, keep logo + primary CTA */
  .nav-inner { padding: 12px 20px; gap: 12px; }
  .nav-links { display: none; }
  .nav-cta { margin-left: auto; gap: 6px; }
  .nav-cta .btn-ghost { display: none; }
  .nav-cta .btn { padding: 8px 12px; font-size: 13px; }
  .nav-hamburger { display: flex; }

  /* Typography */
  h1 { font-size: clamp(34px, 9vw, 44px); letter-spacing: -0.035em; }
  h2 { font-size: clamp(26px, 7vw, 36px); }
  .lead { font-size: 15px; }

  /* Force any 2+ column grid to stack */
  [style*="gridTemplateColumns"],
  [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }

  /* Section head spacing */
  .section-head { margin-bottom: 40px; }

  /* Hero split: editor stacks on top of device preview */
  .hero-split > :first-child {
    min-height: 420px;
    border-right: none !important;
    border-bottom: 1px solid var(--line-soft);
  }
  .hero-split > :nth-child(2) {
    border-left: none !important;
  }

  /* Featured post card */
  .featured { grid-template-columns: 1fr !important; padding: 28px 24px !important; gap: 28px !important; }

  /* Post row — collapse right meta column under content */
  .post-row {
    grid-template-columns: 90px 1fr !important;
    gap: 16px !important;
  }
  .post-meta-right { display: none !important; }

  /* TOC on post page: hide sidebar */
  .toc { display: none; }

  /* Prose */
  .prose { font-size: 16px; line-height: 1.65; }
  .prose pre { font-size: 12px; padding: 14px 16px; }

  /* Filter chips: allow horizontal scroll if many */
  .filter-chip { font-size: 10px; padding: 5px 10px; }

  /* Footer: stack cols */
  footer .hairline { flex-direction: column; gap: 14px; align-items: flex-start !important; }

  /* Buttons in general stay readable */
  .btn { font-size: 13px; }

  /* Hero announce bar: allow wrap on tiny screens */
  .announce-bar { white-space: normal !important; padding: 8px 14px 8px 8px !important; }
}