:root {
  --bg: #071014;
  --bg-alt: #0f1a25;
  --panel: #111b1a;
  --text: #e9f6f2;
  --text-muted: #9eb6af;
  --accent: #4fd1b8;
  --accent-strong: #31a08b;
  --border: rgba(79, 209, 184, 0.14);
  --shadow: 0 20px 50px -30px rgba(0, 0, 0, 0.65);
  --radius: 14px;
  --space-xs: 0.5rem;
  --space-sm: 0.875rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 5rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Source Sans 3", "Segoe UI", sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(79, 209, 184, 0.10) 0%, transparent 32%),
    radial-gradient(circle at 88% 72%, rgba(79, 209, 184, 0.06) 0%, transparent 28%);
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.narrow {
  width: min(760px, 92vw);
}

.section {
  padding: var(--space-2xl) 0;
}

.section-alt {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(8px);
  background: rgba(7, 16, 28, 0.92);
  border-bottom: 1px solid rgba(79, 209, 184, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.brand {
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.03em;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: var(--space-md);
  padding: 0;
  margin: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
}

.nav-links a:hover {
  color: var(--accent-strong);
}

.hero {
  padding-top: calc(var(--space-2xl) + 0.5rem);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: var(--space-xs);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.1;
  margin-bottom: var(--space-sm);
}

h2 {
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  margin-bottom: var(--space-md);
}

.lead {
  color: var(--text-muted);
  font-size: clamp(1rem, 2vw, 1.22rem);
  max-width: 64ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.button {
  display: inline-block;
  text-decoration: none;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #f7fbfa;
  padding: 0.65rem 1.05rem;
  border-radius: 999px;
  font-weight: 600;
}

.button:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.button-ghost {
  background: transparent;
  color: var(--accent);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}

.card {
  grid-column: span 4;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-md);
  box-shadow: var(--shadow);
  transition: transform 200ms ease, border-color 200ms ease, background-color 200ms ease;
}

.card:has(.card-link):hover,
.card:has(.card-link):focus-within {
  transform: translateY(-3px);
  border-color: rgba(79, 209, 184, 0.32);
}

.card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.card h3 {
  margin-bottom: var(--space-xs);
}

.card p {
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.card ul {
  margin: 0;
  padding-left: 1rem;
}

.muted {
  color: var(--text-muted);
}

.status-chip {
  display: inline-block;
  border-radius: 999px;
  background: rgba(79, 209, 184, 0.08);
  border: 1px solid rgba(79, 209, 184, 0.25);
  color: var(--accent);
  padding: 0.2rem 0.55rem;
  font-size: 0.8rem;
  margin-bottom: var(--space-sm);
}

.section-heading-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-sm);
}

.section-note {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.view-all-link {
  font-size: 0.9rem;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}

.view-all-link:hover {
  text-decoration: underline;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag {
  font-size: 0.8rem;
  background: rgba(79, 209, 184, 0.06);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
}

.tag--clickable {
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease, background 120ms ease;
}

.tag--clickable:hover {
  color: var(--accent);
  border-color: rgba(79, 209, 184, 0.4);
}

.tag--active {
  background: rgba(79, 209, 184, 0.18);
  border-color: var(--accent);
  color: var(--accent);
}

.blog-filter-strip {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.blog-filter-strip strong {
  color: var(--accent);
}

.blog-filter-clear {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0.15rem 0.6rem;
  transition: border-color 120ms ease, color 120ms ease;
}

.blog-filter-clear:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.site-footer {
  padding: var(--space-xl) 0;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
}

.footer-links a {
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  background: var(--panel);
  color: var(--text-muted);
  transition: border-color 150ms ease, color 150ms ease;
}

.footer-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 960px) {
  .card {
    grid-column: span 6;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.6rem 0;
    gap: 0.5rem;
  }
}

@media (max-width: 640px) {
  .card {
    grid-column: span 12;
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 0.8rem;
    font-size: 0.95rem;
  }

  .section-heading-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}