:root {
  --ink: #343434;
  --muted: #687077;
  --line: #dce3e6;
  --paper: #ffffff;
  --soft: #f4f8f9;
  --brand: #18abc3;
  --brand-dark: #0d8196;
  --brand-soft: #dff7fb;
  --shadow: 0 20px 55px rgba(26, 49, 56, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(24, 171, 195, 0.18), transparent 34rem),
    linear-gradient(180deg, #f8fbfc 0%, #eef5f7 100%);
  font-family: Arial, Helvetica, sans-serif;
}

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 22px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(52, 52, 52, 0.18);
}

.brand-logo {
  width: 196px;
  height: 54px;
  object-fit: cover;
  object-position: center;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border: 1px solid rgba(220, 227, 230, 0.9);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(12px);
}

.top-nav a {
  padding: 10px 14px;
  border-radius: 999px;
  color: #495157;
  font-size: 14px;
  font-weight: 700;
}

.top-nav a:hover,
.top-nav a:focus-visible {
  color: var(--ink);
  background: var(--brand-soft);
  outline: none;
}

main {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 28px;
  align-items: stretch;
  padding: 46px;
  border: 1px solid rgba(220, 227, 230, 0.92);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.74)),
    linear-gradient(135deg, rgba(24, 171, 195, 0.12), transparent);
  box-shadow: var(--shadow);
}

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

.eyebrow,
.card-kicker {
  margin: 0 0 12px;
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 18px;
  color: #2f3335;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 0.96;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 28px;
  color: #566066;
  font-size: 19px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 8px;
  font-weight: 800;
}

.button.primary {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 14px 30px rgba(24, 171, 195, 0.26);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--brand-dark);
}

.button.secondary {
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: var(--brand);
}

.button:focus-visible,
.system-card:focus-visible,
.support-strip a:focus-visible {
  outline: 3px solid rgba(24, 171, 195, 0.32);
  outline-offset: 3px;
}

.hero-panel {
  align-self: end;
  min-height: 260px;
  padding: 26px;
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(150deg, rgba(52, 52, 52, 0.94), rgba(52, 52, 52, 0.82)),
    radial-gradient(circle at top right, rgba(24, 171, 195, 0.5), transparent 15rem);
}

.hero-panel p {
  margin: 22px 0 14px;
  color: rgba(255, 255, 255, 0.72);
  font-weight: 700;
}

.hero-panel strong {
  display: block;
  max-width: 260px;
  font-size: 24px;
  line-height: 1.22;
}

.status-dot {
  display: inline-block;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 12px rgba(24, 171, 195, 0.18);
}

.systems-section {
  padding: 54px 0 28px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.08;
}

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

.system-card {
  display: flex;
  flex-direction: column;
  min-height: 250px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 12px 30px rgba(26, 49, 56, 0.06);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.system-card:hover {
  transform: translateY(-4px);
  border-color: rgba(24, 171, 195, 0.5);
  box-shadow: 0 18px 36px rgba(26, 49, 56, 0.12);
}

.system-card.featured {
  background:
    linear-gradient(155deg, rgba(24, 171, 195, 0.14), rgba(255, 255, 255, 0.9)),
    #fff;
}

.system-card h3 {
  margin-bottom: 14px;
  font-size: 21px;
  line-height: 1.2;
  word-break: break-word;
}

.system-card p {
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.card-link {
  margin-top: auto;
  color: var(--brand-dark);
  font-weight: 800;
}

.support-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 22px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.support-strip span {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.support-strip strong {
  display: block;
  line-height: 1.4;
}

.support-strip a {
  flex: 0 0 auto;
  padding: 12px 16px;
  border-radius: 8px;
  color: var(--brand-dark);
  background: var(--brand-soft);
  font-weight: 800;
}

@media (max-width: 980px) {
  .site-header,
  .section-heading,
  .support-strip {
    align-items: flex-start;
    flex-direction: column;
  }

  .top-nav {
    width: 100%;
    justify-content: space-between;
    overflow-x: auto;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 34px;
  }

  .hero-panel {
    min-height: auto;
  }

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

@media (max-width: 620px) {
  .site-header,
  main {
    width: min(100% - 28px, 1160px);
  }

  .brand-logo {
    width: 158px;
    height: 44px;
  }

  .top-nav a {
    padding: 9px 12px;
    font-size: 13px;
  }

  .hero {
    padding: 24px;
  }

  h1 {
    font-size: 38px;
  }

  .hero-copy {
    font-size: 17px;
  }

  .hero-panel {
    display: none;
  }

  .button {
    width: 100%;
  }

  .system-grid {
    grid-template-columns: 1fr;
  }

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