:root {
  --bg: #0A0A0A;
  --bg-secondary: #141414;
  --text: #F5F5F5;
  --text-secondary: #A3A3A3;
  --border: #262626;
  --button-bg: #FFFFFF;
  --button-text: #0A0A0A;
  --button-hover: #E5E5E5;
  --container: 1140px;
  --section: 100px;
  --section-mobile: 60px;
  --card-padding: 30px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

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

p {
  color: var(--text-secondary);
}

h1,
h2,
h3 {
  color: var(--text);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: 0;
}

h1 {
  font-size: 48px;
  margin-bottom: 24px;
}

h2 {
  font-size: 32px;
  margin-bottom: 18px;
}

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

.container {
  width: min(100% - 40px, var(--container));
  margin: 0 auto;
}

.narrow {
  max-width: 820px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 10, 10, 0.96);
  border-bottom: 1px solid var(--border);
}

.nav-shell {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  font-weight: 600;
  letter-spacing: 0;
  margin-right: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a,
.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 160ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"],
.footer-links a:hover {
  color: var(--text);
}

.nav-cta {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  padding: 9px 16px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--text);
  margin: 0 auto 6px;
}

.nav-toggle span:last-child {
  margin-bottom: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hero,
.page-hero,
.section {
  padding: var(--section) 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: center;
  gap: 70px;
}

.hero-copy {
  max-width: 780px;
}

.hero-text,
.section-text,
.lead p {
  font-size: 18px;
  max-width: 720px;
}

.eyebrow {
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-weight: 600;
  line-height: 1;
  padding: 0 20px;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.button-primary {
  background: var(--button-bg);
  border-color: var(--button-bg);
  color: var(--button-text);
}

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

.button-secondary {
  background: transparent;
  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--text-secondary);
}

.signal-panel {
  min-height: 360px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.signal-line {
  height: 1px;
  width: 100%;
  background: var(--text-secondary);
}

.signal-line.short {
  width: 58%;
  opacity: 0.45;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.signal-grid span {
  aspect-ratio: 1;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.025);
}

.metric-row {
  display: flex;
  justify-content: space-between;
  color: var(--text-secondary);
  font-size: 12px;
  letter-spacing: 0.08em;
}

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

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

.section-heading.with-action,
.cta-panel,
.footer-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.card-grid {
  display: grid;
  gap: 18px;
}

.card-grid.four {
  grid-template-columns: repeat(4, 1fr);
}

.card-grid.two {
  grid-template-columns: repeat(2, 1fr);
}

.card,
.list-card,
.split-card,
.case-card,
.contact-form,
.contact-details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #0A0A0A;
}

.card,
.list-card,
.contact-form,
.contact-details {
  padding: var(--card-padding);
}

.card p:last-child,
.contact-details p:last-child,
.case-content p:last-child {
  margin-bottom: 0;
}

.card-large {
  min-height: 210px;
}

.prose p {
  margin-bottom: 18px;
}

.prose p:last-child {
  margin-bottom: 0;
}

.cta-section {
  background: var(--bg);
}

.cta-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 42px;
  background: var(--bg-secondary);
}

.cta-panel p {
  max-width: 680px;
  margin-bottom: 0;
}

.list-grid {
  grid-template-columns: repeat(4, 1fr);
}

.list-card {
  color: var(--text);
  font-weight: 500;
}

.stack,
.case-stack {
  display: grid;
  gap: 22px;
}

.split-card,
.case-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  padding: 38px;
}

.check-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.check-list li:first-child {
  padding-top: 0;
}

.case-content h3 {
  font-size: 16px;
  margin: 22px 0 6px;
}

.case-content h3:first-child {
  margin-top: 0;
}

.context {
  border-top: 1px solid var(--border);
  margin-top: 24px;
  padding-top: 18px;
}

.context strong {
  color: var(--text);
  font-weight: 600;
}

.category-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.category-row span {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 14px;
  padding: 8px 12px;
}

.article-card h2 {
  font-size: 24px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
  align-items: start;
}

dl {
  margin: 30px 0 0;
}

dt {
  color: var(--text);
  font-weight: 600;
  margin-bottom: 4px;
}

dd {
  color: var(--text-secondary);
  margin: 0 0 22px;
}

dd a {
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.contact-form {
  display: grid;
  gap: 10px;
}

label {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  color: var(--text);
  font: inherit;
  padding: 13px 14px;
  margin-bottom: 10px;
}

input:focus,
textarea:focus {
  outline: 1px solid var(--text-secondary);
  outline-offset: 2px;
}

textarea {
  resize: vertical;
}

.contact-form .button {
  margin-top: 8px;
  cursor: pointer;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.site-footer p {
  margin: 0;
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 22px;
}

@media (max-width: 980px) {
  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 28px;
  }

  .hero-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .card-grid.four,
  .list-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .signal-panel {
    min-height: 280px;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 32px, var(--container));
  }

  .hero,
  .page-hero,
  .section {
    padding: var(--section-mobile) 0;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 24px;
  }

  .hero-text,
  .section-text,
  .lead p {
    font-size: 16px;
  }

  .nav-shell {
    min-height: 68px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 68px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    padding: 10px;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px;
  }

  .nav-cta {
    display: none;
  }

  .card-grid.four,
  .card-grid.two,
  .list-grid,
  .split-card,
  .case-card {
    grid-template-columns: 1fr;
  }

  .section-heading.with-action,
  .cta-panel,
  .footer-shell {
    align-items: flex-start;
    flex-direction: column;
  }

  .cta-panel,
  .split-card,
  .case-card {
    padding: 28px;
  }

  .button {
    width: 100%;
  }

  .button-row {
    width: 100%;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}