:root {
  --bg: #0b0e11;
  --bg2: #11151a;
  --text: #e8eaed;
  --muted: #9aa4ad;
  --accent: #ffca28;
  --line: #232a31;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

nav {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: rgba(11, 14, 17, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  z-index: 10;
}

nav .brand { color: var(--text); font-size: 15px; font-weight: 700; letter-spacing: 0.04em; cursor: default; }
nav .brand .brand-e { color: var(--accent); }

nav .links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  margin-left: 18px;
}
nav .links a:hover { color: var(--text); }

header, section, footer {
  max-width: 780px;
  margin: 0 auto;
  padding: 72px 24px;
}

header { padding-top: 96px; }

.kicker {
  color: var(--accent);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

h1 {
  font-size: clamp(42px, 9vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.lede {
  font-size: 18px;
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 28px;
}

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }

.btn {
  display: inline-block;
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  background: var(--bg2);
  cursor: pointer;
  font-family: var(--sans);
}
.btn:hover { border-color: var(--muted); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
  font-weight: 700;
}
.btn.primary:hover { filter: brightness(0.94); }

.subtext { color: var(--muted); font-size: 13px; }

h2 {
  font-size: 28px;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}
h2 .mono { font-size: 18px; margin-right: 10px; }

section p { color: var(--muted); margin-bottom: 14px; }

/* Agent */
.agent-box {
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin: 20px 0 12px;
}

.agent-input-row { display: flex; gap: 10px; flex-wrap: wrap; }

#company-input {
  flex: 1;
  min-width: 200px;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  font-family: var(--mono);
}
#company-input:focus { outline: none; border-color: var(--accent); }

.agent-status { min-height: 22px; margin-top: 12px; font-size: 13px; color: var(--accent); }

.agent-output {
  margin-top: 8px;
  padding: 16px;
  border-left: 3px solid var(--accent);
  background: var(--bg);
  border-radius: 0 8px 8px 0;
  color: var(--text);
  font-size: 16px;
  white-space: pre-wrap;
}

.guardrail { font-size: 12px; color: var(--muted); }

.agent-q {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
}
.agent-a { color: var(--text); }

/* Section breaks */
hr.rule {
  max-width: 732px;
  width: calc(100% - 48px);
  margin: 0 auto;
  border: 0;
  border-top: 2px dashed var(--accent);
  opacity: 0.5;
}

/* Case studies */
.case {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  background: var(--bg2);
}
.case h3 { font-size: 20px; margin-bottom: 14px; }
.case .tag {
  display: inline-block;
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 2px 8px;
  border-radius: 20px;
  margin-left: 8px;
  vertical-align: middle;
  font-weight: 400;
}
.case p strong { color: var(--text); }
.metric {
  color: var(--accent);
  font-size: 13.5px;
  border-top: 1px dashed var(--line);
  border-bottom: 1px dashed var(--line);
  padding: 10px 0;
  margin: 16px 0;
}

/* Big-number stats */
.stats-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 18px 0 14px; }
.stat {
  flex: 1;
  min-width: 150px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 16px 14px;
}
.stat-num {
  display: block;
  font-size: clamp(34px, 4.8vw, 48px);
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1.02;
  white-space: nowrap;
}
.stat-label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--muted);
  font-family: var(--mono);
}

/* System flow: vertical rail */
.flow-v { margin: 8px 0 4px; position: relative; }
.fstep {
  position: relative;
  padding: 5px 0 5px 30px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 12px;
}
.fstep::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line);
}
.fstep:first-child::before { top: 50%; }
.fstep:last-child::before { bottom: 50%; }
.fdot {
  position: absolute;
  left: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg2);
  box-sizing: content-box;
}
.fnode {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 13px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text);
  max-width: 100%;
}
.fnode-accent { border-color: var(--accent); color: var(--accent); font-weight: 700; }
.fnote {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.01em;
}
.fnote-accent { color: var(--accent); font-weight: 700; }
.fpulse {
  position: absolute;
  left: 6px;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px 2px rgba(255, 202, 40, 0.55);
  animation: railpulse 7s linear infinite;
  pointer-events: none;
}
@keyframes railpulse {
  0% { top: 14px; opacity: 0; }
  6% { opacity: 0.9; }
  90% { opacity: 0.9; }
  100% { top: calc(100% - 22px); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .fpulse { display: none; }
}
.flow-note { font-size: 12px; color: var(--muted); margin: 10px 0 0; }

/* Full-build expander */
details.build { margin-top: 16px; border-top: 1px dashed var(--line); padding-top: 12px; }
details.build summary {
  cursor: pointer;
  font-family: var(--mono);
  color: var(--accent);
  font-size: 13px;
  list-style: none;
  user-select: none;
}
details.build summary::-webkit-details-marker { display: none; }
details.build summary::after { content: "  [ + ]"; color: var(--muted); }
details.build[open] summary::after { content: "  [ - ]"; color: var(--muted); }
details.build p { margin-top: 14px; }
.shots { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 16px; }
.shots img {
  width: calc(50% - 6px);
  min-width: 260px;
  flex: 1;
  border-radius: 8px;
  border: 1px solid var(--line);
}

/* Method */
.tenets { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.tenet {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  background: var(--bg2);
}
.tenet h4 { color: var(--accent); font-size: 14px; margin-bottom: 8px; letter-spacing: 0.03em; }
.tenet p { font-size: 15px; margin: 0; }

footer { border-top: 1px solid var(--line); padding-bottom: 96px; }
footer p { color: var(--muted); margin-bottom: 18px; }
footer .subtext { margin-top: 22px; }

@media (max-width: 600px) {
  nav .links a { margin-left: 12px; font-size: 13px; }
  .stat { min-width: calc(50% - 6px); }
  header, section, footer { padding: 48px 18px; }
  header { padding-top: 64px; }
  .tenets { grid-template-columns: 1fr; }
  .shots img { width: 100%; }
}