:root {
  --teal-50: #f0fdfa;
  --teal-100: #ccfbf1;
  --teal-200: #99f6e4;
  --teal-400: #2dd4bf;
  --teal-500: #14b8a6;
  --teal-600: #0d9488;
  --teal-700: #0f766e;
  --teal-800: #115e59;

  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;

  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--slate-800);
  background: var(--slate-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--teal-700); text-decoration: none; }
a:hover { color: var(--teal-800); text-decoration: underline; }

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.1em 0.35em;
  background: var(--slate-100);
  color: var(--slate-800);
  border-radius: 4px;
}

.code { font-family: var(--font-mono); }

/* === Nav === */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--slate-200);
}
.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  display: flex; align-items: center; gap: 0.75rem;
  color: var(--slate-900);
  text-decoration: none;
}
.brand-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--slate-900);
  color: var(--teal-400);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 22px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 0.95rem; }
.brand-text small {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate-500);
  font-family: var(--font-mono);
  margin-top: 2px;
}

.nav-links { display: flex; align-items: center; gap: 1.25rem; }
.nav-links a {
  color: var(--slate-600);
  font-size: 0.9rem;
  font-weight: 500;
}
.nav-links a:hover { color: var(--slate-900); text-decoration: none; }
.nav-links .cta {
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  background: var(--slate-900);
  color: #fff !important;
}
.nav-links .cta:hover { background: var(--slate-800); }

@media (max-width: 720px) {
  .nav-links a:not(.cta) { display: none; }
}

/* === Hero === */
.hero {
  background: linear-gradient(180deg, #fff 0%, var(--teal-50) 100%);
  padding: 4rem 1.25rem 5rem;
  border-bottom: 1px solid var(--slate-200);
}
.hero-inner {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}
.pill {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--teal-200);
  background: var(--teal-50);
  color: var(--teal-700);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  margin-bottom: 1.25rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--slate-900);
  margin: 0 0 1.25rem;
}
.lede {
  font-size: 1.1rem;
  color: var(--slate-600);
  max-width: 700px;
  margin: 0 auto 2rem;
}
.hero-cta {
  display: flex; gap: 0.75rem; justify-content: center;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 0.75rem 1.4rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 80ms ease, background 120ms ease, color 120ms ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--teal-600);
  color: #fff;
}
.btn-primary:hover { background: var(--teal-700); color: #fff; }
.btn-secondary {
  background: #fff;
  color: var(--slate-800);
  border-color: var(--slate-300);
}
.btn-secondary:hover { background: var(--slate-50); color: var(--slate-900); }

.hero-bullets {
  list-style: none;
  margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 0.5rem;
  max-width: 640px;
  margin: 0 auto;
  text-align: left;
  font-size: 0.92rem;
  color: var(--slate-600);
}
.hero-bullets li { display: flex; align-items: center; gap: 0.6rem; }
.dot {
  width: 8px; height: 8px; border-radius: 999px;
  flex-shrink: 0;
}
.dot-teal { background: var(--teal-500); }

/* === Blocks === */
.block {
  padding: 4rem 1.25rem;
}
.block-tinted { background: var(--slate-100); }
.block-dark {
  background: var(--slate-900);
  color: var(--slate-100);
}
.block-dark h2 { color: #fff; }
.block-dark .prose { color: var(--slate-300); }
.block-dark .card { background: var(--slate-800); border-color: var(--slate-700); color: var(--slate-100); }
.block-dark code { background: var(--slate-800); color: var(--slate-200); }

.block-inner {
  max-width: 1120px;
  margin: 0 auto;
}
.block-narrow {
  max-width: 760px;
}
h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 0 0 1.5rem;
  color: var(--slate-900);
}
.prose {
  font-size: 1rem;
  color: var(--slate-600);
  max-width: 720px;
}
.prose + .prose { margin-top: 1rem; }

/* === Grid + cards === */
.grid { display: grid; gap: 1rem; margin-top: 2rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-3 { grid-template-columns: 1fr; } }

.card {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: 14px;
  padding: 1.5rem;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}
.card h3 {
  font-size: 1.05rem;
  margin: 0 0 0.6rem;
  color: var(--slate-900);
  font-weight: 600;
}
.card p {
  font-size: 0.9rem;
  color: var(--slate-600);
  margin: 0;
}
.card-dark {
  text-decoration: none;
  color: var(--slate-100);
  cursor: pointer;
}
.card-dark:hover {
  border-color: var(--teal-500);
  transform: translateY(-2px);
  text-decoration: none;
  color: var(--slate-100);
}
.card-dark h3 { color: #fff; }
.card-dark p { color: var(--slate-400); }
.card-eyebrow {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-400);
  font-family: var(--font-mono);
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--teal-400);
  font-size: 0.85rem;
  font-weight: 500;
}

/* === Numbered list === */
.numbered {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0 0 2rem;
  display: grid;
  gap: 0.75rem;
}
.numbered li {
  counter-increment: step;
  padding: 1rem 1.25rem 1rem 3.5rem;
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: 10px;
  position: relative;
  font-size: 0.95rem;
  color: var(--slate-700);
}
.numbered li::before {
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 28px; height: 28px;
  border-radius: 999px;
  background: var(--teal-600);
  color: #fff;
  display: inline-flex;
  align-items: center; justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

/* === Code block === */
.code-block {
  background: var(--slate-950);
  color: var(--slate-100);
  padding: 1.5rem;
  border-radius: 14px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.55;
  margin: 1.5rem 0 0;
}
.code-block code { background: none; color: inherit; padding: 0; }

/* === Footer === */
.footer {
  border-top: 1px solid var(--slate-200);
  background: #fff;
  padding: 2rem 1.25rem;
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--slate-500);
}
.footer-inner small { font-size: 0.8rem; }
.footer-inner a { color: var(--slate-600); }
.footer-inner a:hover { color: var(--slate-900); }