:root {
  --bg: #f5f4f0;
  --bg-alt: #eeece6;
  --ink: #1a1a18;
  --muted: #575450;
  --accent: #0d7a6d;
  --accent-2: #d66a28;
  --accent-3: #1f4d99;
  --card: #ffffff;
  --border: #d5d0c7;
  --shadow: 0 30px 80px rgba(26, 26, 24, 0.12);
  --mono: "IBM Plex Mono", "SFMono-Regular", "Menlo", monospace;
  --sans: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: radial-gradient(circle at 10% 15%, rgba(13, 122, 109, 0.08), transparent 45%),
    radial-gradient(circle at 85% 0%, rgba(31, 77, 153, 0.08), transparent 40%),
    linear-gradient(120deg, var(--bg), var(--bg-alt));
  min-height: 100vh;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

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

a:hover {
  color: var(--accent);
}

header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(245, 244, 240, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 8vw;
  gap: 20px;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.95rem;
}

.nav-cta {
  padding: 10px 18px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

main {
  padding: 40px 8vw 80px;
}

.hero {
  display: grid;
  gap: 30px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
  padding: 60px 0 40px;
}

.hero h1 {
  font-size: clamp(2.5rem, 4vw, 4rem);
  margin: 0 0 16px;
}

.hero p {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 520px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid var(--ink);
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button.primary {
  background: var(--ink);
  color: var(--bg);
}

.button.secondary {
  background: transparent;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.badge {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 999px;
}

.badge input[type="search"] {
  border: none;
  background: transparent;
  font-family: var(--mono);
  font-size: 0.75rem;
  outline: none;
  color: var(--ink);
  width: 180px;
}

.section {
  padding: 50px 0;
}

.section h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 16px;
}

.section p.lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 700px;
}

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 22px;
  box-shadow: 0 12px 40px rgba(26, 26, 24, 0.08);
}

.card h3 {
  margin-top: 0;
}

.card p {
  color: var(--muted);
}

.code-block {
  background: #11120f;
  color: #f9f7f2;
  border-radius: 16px;
  padding: 20px;
  font-family: var(--mono);
  font-size: 0.85rem;
  overflow-x: auto;
}

.diagram {
  background: var(--card);
  border-radius: 24px;
  border: 1px solid var(--border);
  padding: 24px;
  box-shadow: var(--shadow);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.table th,
.table td {
  border-bottom: 1px solid var(--border);
  padding: 14px 12px;
  text-align: left;
}

.table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(13, 122, 109, 0.1);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.filter-bar button {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 600;
  cursor: pointer;
}

.filter-bar button.active {
  background: var(--ink);
  color: var(--bg);
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 12px;
}

.faq {
  display: grid;
  gap: 16px;
}

.faq details {
  background: var(--card);
  border-radius: 16px;
  padding: 16px 20px;
  border: 1px solid var(--border);
}

footer {
  border-top: 1px solid var(--border);
  padding: 30px 8vw 40px;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

footer .footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.fade-in {
  opacity: 0;
  transform: translateY(18px);
  animation: fadeUp 0.8s ease forwards;
}

.fade-in.delay-1 {
  animation-delay: 0.2s;
}

.fade-in.delay-2 {
  animation-delay: 0.4s;
}

.fade-in.delay-3 {
  animation-delay: 0.6s;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 720px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 30px;
  }
}