:root {
  --bg: #070D1A;
  --surface: #0D1529;
  --card: #111E35;
  --border: rgba(255,255,255,0.07);
  --border-hi: rgba(15,204,177,0.3);
  --teal: #0FCCB1;
  --teal-dim: rgba(15,204,177,0.12);
  --amber: #F5A623;
  --t1: #F0F4FF;
  --t2: #8B96AF;
  --t3: #4E5A72;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
  --serif: 'DM Serif Display', serif;
  --radius-sm: 6px;
  --radius-lg: 16px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--t1);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--teal); }
a:hover { opacity: 0.9; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }

nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(7,13,26,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}
.nav-in {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 58px;
}
.logo {
  font-family: var(--serif); font-size: 1.2rem; color: var(--t1);
  text-decoration: none; display: flex; align-items: center; gap: 8px;
}
.logo-pulse {
  width: 8px; height: 8px; border-radius: 50%; background: var(--teal);
  box-shadow: 0 0 8px var(--teal);
}
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a {
  font-size: 13px; color: var(--t2); text-decoration: none;
  padding: 6px 14px; border-radius: var(--radius-sm); transition: color .15s, background .15s;
}
.nav-links a:hover { background: var(--card); color: var(--t1); }
.nav-links a.active { color: var(--teal); background: var(--teal-dim); }
.nav-cta {
  background: var(--teal) !important; color: #070D1A !important;
  font-weight: 600 !important; padding: 7px 16px !important;
}

main { padding: 3.5rem 0 4rem; }

.eyebrow {
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal);
  margin-bottom: 12px;
}
.page-title {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.2; margin-bottom: 1rem;
}
.page-sub {
  font-size: 15px; color: var(--t2); max-width: 640px;
  line-height: 1.7; margin-bottom: 2.5rem;
}

.search-bar {
  display: flex; align-items: center; gap: 10px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: 1rem;
  max-width: 420px;
}
.search-bar input {
  flex: 1; background: none; border: none; outline: none;
  font-family: var(--sans); font-size: 14px; color: var(--t1);
}
.search-bar input::placeholder { color: var(--t3); }

.filter-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 2rem; }
.filter-tab {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 100px; padding: 6px 14px;
  font-family: var(--sans); font-size: 12px; color: var(--t2);
  cursor: pointer; transition: border-color .15s, color .15s;
}
.filter-tab:hover, .filter-tab.active {
  border-color: var(--border-hi); color: var(--teal);
}

.glossary-grid, .resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.term-card, .article-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.5rem;
  transition: border-color .2s;
  text-decoration: none; color: inherit; display: block;
}
.term-card:hover, .article-card:hover { border-color: var(--border-hi); }

.term-card-tag, .article-pillar {
  font-family: var(--mono); font-size: 10px; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 8px; display: inline-block;
}
.article-pillar.pillar-amber { color: var(--amber); }
.article-pillar.pillar-gray { color: var(--t2); }

.term-card-name, .article-title {
  font-family: var(--serif); font-size: 1.15rem;
  line-height: 1.3; margin-bottom: 10px; color: var(--t1);
}
.term-card-def, .article-excerpt {
  font-size: 13px; color: var(--t2); line-height: 1.65; margin-bottom: 12px;
}
.term-card-footer, .article-card-footer {
  display: flex; justify-content: space-between; align-items: center;
  gap: 8px; flex-wrap: wrap;
}
.term-card-url {
  font-family: var(--mono); font-size: 10px; color: var(--t3);
}
.term-card-schema-badge, .article-schema-badge {
  font-family: var(--mono); font-size: 9px; font-weight: 500;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--amber); background: rgba(245,166,35,0.1);
  padding: 3px 8px; border-radius: 4px;
}
.article-read-time {
  font-family: var(--mono); font-size: 10px; color: var(--t3);
}
.article-keyword-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.kw-tag {
  font-family: var(--mono); font-size: 9px; color: var(--t3);
  background: var(--surface); padding: 3px 8px; border-radius: 4px;
}

.pillar { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; margin-bottom: 4rem; align-items: start; }
.pillar:nth-child(even) { direction: rtl; }
.pillar:nth-child(even) > * { direction: ltr; }
.pillar-text h2 {
  font-family: var(--serif); font-size: 1.6rem; line-height: 1.25;
  margin-bottom: 1rem;
}
.pillar-text p { color: var(--t2); margin-bottom: 1rem; font-size: 14px; line-height: 1.7; }
.pillar-kw { display: flex; flex-wrap: wrap; gap: 6px; margin: 1rem 0; }
.kw {
  font-family: var(--mono); font-size: 10px; color: var(--t3);
  background: var(--surface); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 100px;
}
.pillar-panel {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.5rem;
}
.pillar-panel-title {
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 1rem;
}
.feature-list { list-style: none; }
.feature-list li {
  font-size: 13px; color: var(--t2); padding: 8px 0;
  border-bottom: 1px solid var(--border); line-height: 1.5;
}
.feature-list li:last-child { border-bottom: none; }
.feat-check { color: var(--teal); margin-right: 8px; }
.pillar-metric {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
  margin-top: 1.25rem; padding-top: 1.25rem; border-top: 1px solid var(--border);
}
.pm-n { font-family: var(--serif); font-size: 1.4rem; color: var(--teal); }
.pm-l { font-family: var(--mono); font-size: 10px; color: var(--t3); margin-top: 4px; }

.btn {
  display: inline-block; font-family: var(--sans); font-size: 14px;
  text-decoration: none; border-radius: var(--radius-sm); transition: opacity .15s;
}
.btn-ghost {
  color: var(--t2); border: 1px solid var(--border); padding: 10px 18px;
}
.btn-ghost:hover { border-color: var(--t3); color: var(--t1); }
.btn-sm { font-size: 13px; padding: 8px 14px; }

.article-body { max-width: 720px; }
.article-body h2 {
  font-family: var(--serif); font-size: 1.35rem;
  margin: 2rem 0 0.75rem; color: var(--t1);
}
.article-body p { color: var(--t2); margin-bottom: 1rem; line-height: 1.75; }
.article-body ul { color: var(--t2); margin: 0 0 1rem 1.25rem; line-height: 1.75; }
.breadcrumb {
  font-family: var(--mono); font-size: 11px; color: var(--t3);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--t2); text-decoration: none; }
.breadcrumb a:hover { color: var(--teal); }

footer {
  border-top: 1px solid var(--border); padding: 2.5rem 0; margin-top: 2rem;
}
.footer-in {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
}
.footer-logo {
  font-family: var(--serif); font-size: 1.1rem; color: var(--t1);
  display: flex; align-items: center; gap: 7px;
}
.footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.footer-links a {
  font-size: 12px; color: var(--t3); text-decoration: none; font-family: var(--mono);
}
.footer-links a:hover { color: var(--teal); }
.footer-legal { font-size: 11px; color: var(--t3); font-family: var(--mono); }

.page-footer-rule {
  margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--border);
  font-family: var(--mono); font-size: 10px; color: var(--t3);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
}

@media (max-width: 860px) {
  .pillar { grid-template-columns: 1fr; }
  .pillar:nth-child(even) { direction: ltr; }
}