:root {
  --bg: #0a0f16;
  --surface: #111823;
  --surface-2: #151f2d;
  --text: #edf3f8;
  --muted: #9aa9b8;
  --accent: #6db5ff;
  --accent-soft: rgba(109, 181, 255, 0.12);
  --border: #283545;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; }
code { color: #cfe5fb; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(10, 15, 22, 0.86);
  border-bottom: 1px solid rgba(40, 53, 69, 0.7);
}
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  text-decoration: none;
  font-weight: 760;
  letter-spacing: -0.02em;
}
.nav-links {
  display: flex;
  gap: 1.2rem;
  align-items: center;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.93rem;
}
.nav-links a:hover, .text-link:hover { color: var(--text); }

main { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem 5rem; }
.hero { padding: 7rem 0 5rem; max-width: 920px; }
.eyebrow {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 760;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}
h1 {
  font-size: clamp(2.7rem, 7vw, 5.7rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
  margin: 0;
  max-width: 940px;
}
.hero-title-small { font-size: clamp(2.5rem, 6vw, 4.8rem); }
.lede {
  font-size: clamp(1.12rem, 2.2vw, 1.35rem);
  color: var(--muted);
  max-width: 800px;
  margin: 1.8rem 0 0;
}
.actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 2rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  text-decoration: none;
  border: 1px solid var(--border);
  font-weight: 680;
  font-size: 0.94rem;
}
.button.primary { background: var(--accent); color: #06111d; border-color: var(--accent); }
.button.secondary { background: var(--surface); }
.button:hover { transform: translateY(-1px); }

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--border);
  background: var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 6rem;
}
.signal { background: var(--surface); padding: 1.15rem 1.2rem; }
.signal strong { display: block; font-size: 1rem; letter-spacing: -.01em; }
.signal span { color: var(--muted); font-size: 0.84rem; }

section { margin-top: 6rem; }
.section-head { max-width: 760px; margin-bottom: 2rem; }
h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); letter-spacing: -0.035em; margin: 0; line-height: 1.08; }
h3 { margin-top: 0; letter-spacing: -0.015em; }
.section-head p, .muted { color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.four-cards { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  background: linear-gradient(180deg, var(--surface), rgba(17, 24, 35, 0.72));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.45rem;
  text-decoration: none;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  transition: border-color .18s ease, transform .18s ease, background .18s ease;
}
.card.compact { min-height: 210px; padding: 1.2rem; }
.static-card { min-height: 0; }
a.card:hover { border-color: #46627f; transform: translateY(-2px); background: var(--surface-2); }
.card .kicker { color: var(--accent); font-size: 0.76rem; letter-spacing: 0.09em; text-transform: uppercase; font-weight: 760; }
.card h3 { font-size: 1.35rem; margin: 0.65rem 0 0.55rem; }
.card p { color: var(--muted); margin: 0; }
.card .card-foot { margin-top: auto; padding-top: 1.4rem; color: var(--text); font-size: 0.9rem; font-weight: 660; }
.tags { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1rem; }
.tag { font-size: 0.76rem; color: #b9c8d7; border: 1px solid var(--border); background: rgba(255,255,255,.018); border-radius: 999px; padding: 0.28rem 0.55rem; }

.columns { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 3rem; align-items: start; }
.stack { display: grid; gap: 1rem; }
.item { border-top: 1px solid var(--border); padding-top: 1rem; }
.item h3 { margin-bottom: 0.35rem; }
.item p { margin: 0; color: var(--muted); }
.callout { border-left: 2px solid var(--accent); padding: 0.15rem 0 0.15rem 1rem; color: var(--muted); max-width: 800px; }

.case-hero { padding: 5.5rem 0 3rem; max-width: 920px; }
.case-meta { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-top: 1.4rem; }
.case-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 3rem; align-items: start; }
.case-copy { max-width: 780px; }
.case-copy section { margin-top: 3.4rem; }
.case-copy h2 { font-size: 1.7rem; }
.case-copy p, .case-copy li { color: #c4ced8; }
.case-copy ul { padding-left: 1.25rem; }
.aside { position: sticky; top: 5.5rem; border: 1px solid var(--border); background: var(--surface); border-radius: 12px; padding: 1.1rem; }
.aside h3 { font-size: 0.9rem; margin-bottom: 0.7rem; }
.aside a { display: block; color: var(--muted); text-decoration: none; padding: 0.3rem 0; font-size: 0.9rem; }
.aside a:hover { color: var(--text); }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
  margin: 1.4rem 0;
}
.metric-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.metric {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  padding: 1rem;
}
.metric strong { display: block; font-size: 1.35rem; letter-spacing: -.03em; }
.metric span { color: var(--muted); font-size: .82rem; }

.table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 1.4rem 0;
  border: 1px solid var(--border);
  border-radius: 12px;
}
.comparison-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  background: var(--surface);
  font-size: .9rem;
}
.comparison-table th,
.comparison-table td {
  padding: .8rem .9rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}
.comparison-table th {
  color: var(--text);
  background: var(--surface-2);
  font-size: .82rem;
  letter-spacing: .01em;
}
.comparison-table td { color: #c4ced8; }
.comparison-table tbody tr:last-child td { border-bottom: 0; }

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.4rem;
}
.evidence {
  margin: 0;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
}
.evidence.wide { grid-column: 1 / -1; }
.evidence img { width: 100%; height: auto; display: block; background: white; }
.evidence figcaption { padding: .85rem 1rem 1rem; color: var(--muted); font-size: .86rem; }
.evidence figcaption strong { color: var(--text); }
.evidence a { display: block; }
.evidence a:focus-visible { outline: 3px solid var(--accent); outline-offset: -3px; }
.demo-evidence { max-width: 602px; margin-top: 1.4rem; }
.result-stack { display: grid; gap: 1rem; margin-top: 1.4rem; }
.result-example img { aspect-ratio: 1024 / 290; object-fit: contain; }
.result-example a { cursor: zoom-in; }
.diagram-figure img { background: #0b111b; }
.source-note { color: var(--muted); font-size: .84rem; margin-top: 1rem; }
.source-note a { color: var(--text); }

.patchcore-diagram,
.flow-diagram {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(109,181,255,.06), rgba(17,24,35,.65));
  border-radius: 14px;
  padding: 1rem;
  margin: 1.4rem 0 1.2rem;
}
.diagram-phase + .diagram-phase,
.flow-phase + .flow-phase { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.diagram-label,
.flow-label {
  color: var(--accent);
  font-size: .75rem;
  font-weight: 760;
  text-transform: uppercase;
  letter-spacing: .11em;
  margin-bottom: .75rem;
}
.diagram-flow,
.flow-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: .45rem;
}
.flow-row.five { grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr; }
.diagram-node,
.flow-node {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  padding: .85rem .75rem;
  min-height: 92px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.diagram-node strong, .flow-node strong { font-size: .9rem; line-height: 1.25; }
.diagram-node span, .flow-node span { color: var(--muted); font-size: .75rem; margin-top: .25rem; line-height: 1.35; }
.diagram-arrow, .flow-arrow { align-self: center; color: var(--accent); font-size: 1.25rem; font-weight: 700; }
.diagram-note, .flow-note { color: var(--muted); font-size: .82rem; margin: .9rem 0 0; }

footer { max-width: var(--max); margin: 0 auto; padding: 2rem 1.5rem 3rem; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; }
footer a { color: var(--text); text-decoration: none; }

@media (max-width: 1050px) {
  .grid.four-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 950px) {
  .grid.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 850px) {
  .signal-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid, .grid.three, .columns, .case-layout { grid-template-columns: 1fr; }
  .aside { position: static; }
  .hero { padding-top: 5.5rem; }
  .diagram-flow, .flow-row, .flow-row.five { grid-template-columns: 1fr; }
  .diagram-arrow, .flow-arrow { transform: rotate(90deg); justify-self: center; }
}
@media (max-width: 650px) {
  .grid.four-cards, .metric-grid, .metric-grid.four, .evidence-grid { grid-template-columns: 1fr; }
  .evidence.wide { grid-column: auto; }
}
@media (max-width: 560px) {
  .nav { padding-inline: 1rem; align-items: flex-start; }
  .nav-links { gap: .8rem; justify-content: flex-end; }
  .nav-links a { font-size: .86rem; }
  main { padding-inline: 1rem; }
  .hero { padding: 4.5rem 0 3.5rem; }
  .signal-grid { grid-template-columns: 1fr; margin-bottom: 4rem; }
  section { margin-top: 4.5rem; }
  .card { min-height: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button, .card { transition: none; }
  .button:hover, a.card:hover { transform: none; }
}