:root {
  --bg-primary: #0b0b0c;
  --bg-secondary: #111113;
  --bg-tertiary: #151413;
  --cyan: #e89947;
  --text-primary: #ece8e1;
  --text-secondary: #b8b2a6;
  --text-dim: #51504a;
  --border: rgba(236, 232, 225, 0.12);
  --border-strong: rgba(236, 232, 225, 0.22);
  --serif: "Fraunces", "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}

body {
  min-height: 100vh;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--sans);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.035;
  background-image:
    linear-gradient(var(--text-dim) 1px, transparent 1px),
    linear-gradient(90deg, var(--text-dim) 1px, transparent 1px);
  background-size: 60px 60px;
}

a {
  color: inherit;
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 10, 15, 0.86);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.logo,
.back-link,
.eyebrow,
.metric strong,
.diagram-label,
.fact-kicker,
.tag,
.small-link {
  font-family: var(--mono);
}

.logo {
  color: var(--cyan);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.logo span {
  color: var(--text-dim);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-links a,
.back-link,
.small-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
}

.nav-links a:hover,
.back-link:hover,
.small-link:hover {
  color: var(--cyan);
}

.hero {
  padding: 76px 0 50px;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.68fr);
  gap: 56px;
  align-items: start;
}

.eyebrow {
  display: inline-flex;
  margin-bottom: 20px;
  padding: 8px 12px;
  border: 1px solid rgba(232, 153, 71, 0.22);
  border-radius: 999px;
  background: rgba(232, 153, 71, 0.08);
  color: var(--cyan);
  font-size: 12px;
}

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-family: var(--serif);
  font-size: clamp(54px, 5.4vw, 74px);
  font-weight: 350;
  line-height: 1.02;
  letter-spacing: 0;
  font-variation-settings: "opsz" 144, "SOFT" 60;
}

.subtitle {
  max-width: 800px;
  color: var(--text-secondary);
  font-size: 21px;
  line-height: 1.5;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 6px;
  border: 1px solid var(--border);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.btn.primary {
  border-color: var(--cyan);
  background: var(--cyan);
  color: var(--bg-primary);
}

.btn:hover {
  border-color: var(--cyan);
}

.summary-card,
.panel,
.diagram,
.metric,
.fact-card {
  background: linear-gradient(180deg, rgba(18, 18, 26, 0.94), rgba(10, 10, 15, 0.96));
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: inset 0 1px 0 rgba(236, 232, 225, 0.04);
}

.summary-card {
  padding: 22px;
}

.case-visual-stack {
  display: grid;
  gap: 14px;
}

.case-visual {
  position: relative;
  height: auto;
  min-height: 340px;
  display: grid;
  align-content: center;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    radial-gradient(360px circle at 50% 42%, rgba(232, 153, 71, 0.10), transparent 58%),
    linear-gradient(135deg, rgba(232, 153, 71, 0.08), rgba(232, 153, 71, 0.04)),
    var(--bg-tertiary);
  box-shadow: inset 0 1px 0 rgba(236, 232, 225, 0.04), 0 24px 70px rgba(0, 0, 0, 0.26);
}

.case-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 10, 15, 0.02), rgba(10, 10, 15, 0.34)),
    linear-gradient(rgba(236, 232, 225, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(236, 232, 225, 0.08) 1px, transparent 1px);
  background-size: auto, 28px 28px, 28px 28px;
  pointer-events: none;
}

.case-artifact {
  gap: 12px;
  padding: 20px;
}

.case-artifact-title {
  position: relative;
  z-index: 1;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
}

.case-artifact-flow {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
}

.case-artifact-node {
  padding: 11px 12px;
  border: 1px solid rgba(236, 232, 225, 0.12);
  border-radius: 8px;
  background: rgba(10, 10, 15, 0.62);
}

.case-artifact-node strong,
.case-artifact-node span {
  display: block;
}

.case-artifact-node strong {
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.2;
}

.case-artifact-node span {
  margin-top: 5px;
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.45;
}

.case-artifact-metrics {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.case-artifact-metrics span {
  padding: 8px;
  border: 1px solid rgba(232, 153, 71, 0.18);
  border-radius: 6px;
  background: rgba(232, 153, 71, 0.08);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.35;
}

.summary-card h2 {
  margin-bottom: 14px;
  font-size: 18px;
}

.summary-card p {
  color: var(--text-secondary);
  font-size: 14px;
}

.summary-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  list-style: none;
}

.summary-list li {
  padding-top: 12px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
}

.summary-list strong {
  color: var(--cyan);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding: 8px 0 68px;
}

.metric {
  padding: 20px;
}

.metric strong {
  display: block;
  margin-bottom: 8px;
  color: var(--cyan);
  font-size: 28px;
  line-height: 1;
}

.metric span {
  display: block;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.45;
}

.section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.artifact-packet {
  padding-top: 64px;
  padding-bottom: 64px;
  background:
    linear-gradient(180deg, rgba(232, 153, 71, 0.025), rgba(232, 153, 71, 0.006));
}

.section-header {
  margin-bottom: 34px;
}

.section-header h2 {
  max-width: 760px;
  margin-bottom: 12px;
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 350;
  line-height: 1.08;
  letter-spacing: 0;
  font-variation-settings: "opsz" 144, "SOFT" 60;
}

.section-header p {
  max-width: 760px;
  color: var(--text-secondary);
  font-size: 17px;
}

.artifact-packet-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.artifact-doc {
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 210px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(18, 18, 26, 0.92), rgba(10, 10, 15, 0.96));
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.artifact-doc:hover {
  border-color: rgba(232, 153, 71, 0.42);
  background:
    linear-gradient(180deg, rgba(232, 153, 71, 0.075), rgba(10, 10, 15, 0.96));
  transform: translateY(-2px);
}

.artifact-doc span {
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.artifact-doc h3 {
  font-size: 20px;
  line-height: 1.2;
}

.artifact-doc p {
  color: var(--text-secondary);
  font-size: 14px;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 24px;
}

.panel {
  padding: 26px;
}

.panel h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.panel p,
.panel li {
  color: var(--text-secondary);
  font-size: 15px;
}

.panel ul {
  display: grid;
  gap: 10px;
  padding-left: 18px;
}

.diagram {
  padding: 26px;
}

.diagram-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
}

.diagram-title h3 {
  font-size: 20px;
}

.diagram-label {
  color: var(--cyan);
  font-size: 11px;
  text-transform: uppercase;
}

.diagram-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.diagram-column {
  display: grid;
  gap: 10px;
  align-content: start;
}

.diagram-column h4 {
  color: var(--cyan);
  font-size: 13px;
  line-height: 1.3;
}

.node {
  min-height: 78px;
  padding: 14px;
  border: 1px solid rgba(236, 232, 225, 0.12);
  border-radius: 8px;
  background: rgba(26, 26, 46, 0.52);
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.45;
}

.node strong {
  display: block;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.fact-card {
  padding: 22px;
}

.fact-kicker {
  display: block;
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: 11px;
  text-transform: uppercase;
}

.fact-card h3 {
  margin-bottom: 10px;
  font-size: 19px;
  line-height: 1.25;
}

.fact-card p {
  color: var(--text-secondary);
  font-size: 14px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  padding: 5px 9px;
  border: 1px solid rgba(236, 232, 225, 0.12);
  border-radius: 6px;
  background: rgba(26, 26, 46, 0.62);
  color: var(--text-secondary);
  font-size: 11px;
}

.cta {
  padding: 72px 0 96px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.cta h2 {
  max-width: 760px;
  margin: 0 auto 14px;
  font-family: var(--serif);
  font-size: 48px;
  font-weight: 350;
  line-height: 1.08;
  letter-spacing: 0;
  font-variation-settings: "opsz" 144, "SOFT" 60;
}

.cta p {
  max-width: 700px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 17px;
}

.cta-actions {
  justify-content: center;
}

footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 12px;
  text-align: center;
}

@media (max-width: 960px) {
  .hero-layout,
  .two-col {
    grid-template-columns: 1fr;
  }

  .metric-grid,
  .artifact-packet-grid,
  .diagram-flow,
  .fact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 32px, 1200px);
  }

  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 12px;
  }

  .metric-grid,
  .artifact-packet-grid,
  .diagram-flow,
  .fact-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .case-visual {
    min-height: 0;
  }

  .case-artifact-metrics {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 44px;
  }

  .subtitle {
    font-size: 18px;
  }

  .section-header h2,
  .cta h2 {
    font-size: 34px;
  }
}