/* Core tokens keep the static site easy to retheme without changing layout code. */
:root {
  color-scheme: dark;
  --bg: #090909;
  --bg-elevated: #101114;
  --bg-muted: #15171b;
  --text: #ffffff;
  --text-muted: #b0b0b0;
  --text-soft: #d7d7d7;
  --line: rgba(255, 255, 255, 0.11);
  --line-strong: rgba(255, 255, 255, 0.18);
  --accent: #3b82f6;
  --accent-strong: #1d4ed8;
  --accent-soft: rgba(59, 130, 246, 0.16);
  --max-width: 1180px;
  --radius: 8px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: clip;
  background:
    linear-gradient(180deg, rgba(59, 130, 246, 0.1), transparent 360px),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

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

p,
h1,
h2,
h3,
h4 {
  margin: 0;
}

ul,
ol,
dl {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

.skip-link {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 10;
  padding: 10px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--text);
  color: var(--bg);
  transform: translateY(-140%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 22px 24px;
  backdrop-filter: blur(18px);
}

.brand,
.site-nav,
.hero__actions,
.contact__links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  min-width: max-content;
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 700;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border: 2px solid var(--accent);
  border-radius: 2px;
}

.site-nav {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.82rem;
  transition: background 160ms ease, color 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.hero,
.section,
.contact,
.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-right: 24px;
  padding-left: 24px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 72px;
  align-items: end;
  min-height: clamp(720px, calc(100svh - 88px), 980px);
  padding-top: 84px;
  padding-bottom: 96px;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 880px;
  margin-top: 22px;
  font-size: clamp(3.2rem, 6vw, 5.2rem);
  line-height: 0.96;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero__summary {
  max-width: 720px;
  margin-top: 28px;
  color: var(--text-soft);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  overflow-wrap: anywhere;
}

.hero__content,
.section__header,
.contact__inner {
  min-width: 0;
}

.hero__actions,
.contact__links {
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-weight: 700;
  line-height: 1;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

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

.button--secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.signal-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
  box-shadow: var(--shadow);
}

.signal-panel dl {
  display: grid;
}

.signal-panel dt,
.signal-panel dd {
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.signal-panel dt {
  color: var(--text-muted);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.signal-panel dd {
  margin: 0;
  color: var(--text);
  font-size: 1.08rem;
  font-weight: 700;
}

.signal-panel dd:last-child {
  border-bottom: 0;
}

.section {
  padding-top: 112px;
  padding-bottom: 112px;
  border-top: 1px solid var(--line);
}

.section--compact {
  padding-top: 86px;
  padding-bottom: 86px;
}

.section--split {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1fr);
  gap: 64px;
}

.section__header {
  max-width: 720px;
}

.section__intro {
  margin-top: 18px;
  color: var(--text-muted);
}

.section__header h2,
.contact h2 {
  margin-top: 14px;
  font-size: clamp(2rem, 4vw, 4.25rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.focus-grid,
.expertise-grid,
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 48px;
}

.focus-card,
.tech-group,
.evidence-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}

.focus-card,
.tech-group,
.evidence-card {
  padding: 24px;
}

.focus-card h3,
.tech-group h3,
.evidence-card h3 {
  font-size: 1rem;
}

.focus-card p,
.evidence-card p {
  margin-top: 12px;
  color: var(--text-muted);
}

.evidence-card__type {
  color: var(--accent) !important;
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.evidence-card h3 {
  margin-top: 10px;
  font-size: 1.3rem;
}

.text-link {
  display: inline-flex;
  margin-top: 18px;
  color: var(--accent);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.timeline {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.timeline__item {
  padding: 26px;
  background: var(--bg);
}

.timeline__item h3 {
  font-size: 1rem;
}

.timeline__item p {
  margin-top: 8px;
  color: var(--text-muted);
}

.case-stack {
  display: grid;
  gap: 18px;
  margin-top: 48px;
}

.case-study {
  display: grid;
  grid-template-columns: minmax(260px, 0.55fr) minmax(0, 1fr);
  gap: 40px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.case-study__header h3 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  line-height: 1.08;
}

.case-study__header p {
  margin-top: 22px;
  color: var(--text-soft);
}

.case-study__meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.case-study__meta span,
.tag-list li {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.case-study__body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.case-study__section h3,
.case-study__section h4 {
  color: var(--text);
  font-size: 0.78rem;
  text-transform: uppercase;
}

/* Full-width card whose body holds three equal columns. */
.case-study--columns {
  grid-template-columns: minmax(0, 1fr);
}

.case-study--columns .case-study__body {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-study__section ul {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.case-study__section li {
  position: relative;
  padding-left: 16px;
  color: var(--text-muted);
  font-size: 0.94rem;
}

.case-study__section li a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.case-study__section li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

.expertise-item {
  display: flex;
  align-items: center;
  min-height: 92px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.12), rgba(255, 255, 255, 0.03));
  font-weight: 800;
}

.tech-groups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 48px;
}

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

.contact {
  padding-top: 112px;
  padding-bottom: 112px;
  border-top: 1px solid var(--line);
}

.contact__inner {
  max-width: 820px;
}

.contact p:not(.eyebrow) {
  margin-top: 18px;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-top: 28px;
  padding-bottom: 34px;
  border-top: 1px solid var(--line);
  color: var(--text-muted);
  font-size: 0.9rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 980px) {
  .hero,
  .section--split,
  .case-study {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    gap: 42px;
    min-height: auto;
    padding-top: 72px;
  }

  .focus-grid,
  .expertise-grid,
  .evidence-grid,
  .tech-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header,
  .hero,
  .section,
  .contact,
  .site-footer {
    width: calc(100% - 48px);
    margin-right: auto;
    margin-left: auto;
    padding-right: 0;
    padding-left: 0;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero,
  .section,
  .contact {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .hero {
    display: block;
  }

  .signal-panel {
    margin-top: 42px;
  }

  .hero h1 {
    font-size: clamp(2.65rem, 13vw, 3.75rem);
  }

  .hero__actions .button {
    max-width: 100%;
  }

  .case-study,
  .focus-card,
  .tech-group,
  .evidence-card {
    padding: 20px;
  }

  .case-study__body,
  .case-study--columns .case-study__body,
  .focus-grid,
  .expertise-grid,
  .evidence-grid,
  .tech-groups {
    grid-template-columns: 1fr;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}