:root {
  color-scheme: light;
  --ink: #10161d;
  --muted: #586778;
  --line: #dfe6ed;
  --paper: #ffffff;
  --soft: #f3f6f9;
  --blue: #1d6f8f;
  --green: #198a69;
  --gold: #e1a23a;
  --rust: #a64e2e;
  --shadow: 0 24px 70px rgba(19, 31, 44, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(223, 230, 237, 0.8);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: #fff;
  text-decoration: none;
  background: var(--ink);
  border-radius: 8px;
  font-weight: 800;
}

nav {
  display: flex;
  gap: clamp(14px, 3vw, 34px);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

nav a {
  text-decoration: none;
}

nav a:hover,
nav a:focus-visible {
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  min-height: calc(100vh - 81px);
  padding: clamp(46px, 7vw, 96px) clamp(20px, 5vw, 72px) 42px;
}

.hero-copy {
  max-width: 760px;
}

.role,
.section-label {
  margin: 0 0 16px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(44px, 7vw, 84px);
  line-height: 0.96;
  max-width: 820px;
}

.lede {
  max-width: 640px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  color: #fff;
  background: var(--ink);
}

.button.ghost {
  color: var(--ink);
  background: #fff;
}

.hero-visual {
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
  background: #10161d;
}

.hero-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 920 / 600;
  object-fit: cover;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stats article {
  min-height: 150px;
  padding: 36px clamp(20px, 4vw, 56px);
  background: var(--soft);
}

.stats strong {
  display: block;
  margin-bottom: 10px;
  font-size: 46px;
  line-height: 1;
}

.stats span {
  display: block;
  max-width: 300px;
  color: var(--muted);
  line-height: 1.45;
}

.section {
  padding: clamp(72px, 10vw, 128px) clamp(20px, 5vw, 72px);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(40px, 7vw, 96px);
  align-items: start;
}

.section-intro {
  position: sticky;
  top: 114px;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.04;
}

.section-intro p:not(.section-label),
.credential-band p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  position: relative;
  padding: 26px 28px 26px 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 30px;
  left: 18px;
  width: 6px;
  height: calc(100% - 60px);
  border-radius: 99px;
  background: var(--gold);
}

.timeline-date {
  display: block;
  margin-bottom: 12px;
  color: var(--rust);
  font-size: 13px;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.timeline h3,
.capability-card h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.18;
}

.timeline p,
.capability-card p {
  color: var(--muted);
  line-height: 1.6;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: #fff;
  font: inherit;
  font-size: 13px;
  font-weight: 850;
  cursor: pointer;
}

.filter.active,
.filter:hover,
.filter:focus-visible {
  color: #fff;
  border-color: var(--ink);
  background: var(--ink);
}

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

.capability-card {
  min-height: 250px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  transition: opacity 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.capability-card.is-hidden {
  display: none;
}

.capability-card:hover {
  transform: translateY(-3px);
  border-color: #b9c7d5;
}

.icon {
  display: inline-grid;
  min-width: 44px;
  height: 44px;
  place-items: center;
  margin-bottom: 28px;
  padding: 0 8px;
  color: #fff;
  border-radius: 8px;
  background: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.capability-card:nth-child(2n) .icon {
  background: var(--green);
}

.capability-card:nth-child(3n) .icon {
  background: var(--rust);
}

.capability-card:nth-child(4n) .icon {
  background: var(--gold);
  color: var(--ink);
}

.credential-band {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(320px, 1fr);
  gap: clamp(34px, 7vw, 92px);
  background: var(--soft);
}

.credential-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.credential-list li {
  padding: 20px 22px;
  border-left: 5px solid var(--green);
  background: #fff;
  border-radius: 0 8px 8px 0;
  box-shadow: 0 8px 28px rgba(19, 31, 44, 0.06);
  font-weight: 760;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.7fr);
  gap: 28px;
  align-items: center;
  padding: clamp(58px, 8vw, 96px) clamp(20px, 5vw, 72px);
  color: #fff;
  background: var(--ink);
}

.contact-section .section-label {
  color: var(--gold);
}

.contact-section h2 {
  margin-bottom: 0;
  max-width: 720px;
}

.contact-links {
  display: grid;
  gap: 12px;
}

.contact-links a {
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  color: #fff;
  text-decoration: none;
  font-weight: 760;
}

.contact-links a:hover,
.contact-links a:focus-visible {
  border-color: var(--gold);
}

@media (max-width: 1040px) {
  .hero,
  .split,
  .credential-band,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .section-intro {
    position: static;
  }

  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

  nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    padding-top: 34px;
  }

  h1 {
    font-size: clamp(40px, 14vw, 58px);
  }

  .stats,
  .capability-grid {
    grid-template-columns: 1fr;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
  }

  .capability-card {
    min-height: 0;
  }
}