:root {
  --color-background: #0b0d11;
  --color-foreground: #ffffff;
  --color-primary: #2dd8a7;
  --color-primary-dark: #1ca57c;
  --color-muted: #6b7280;
  --color-light-bg: #f4f6f9;
  --color-card-border: #e3e7ed;
  --font-sans: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: #111827;
  background-color: #ffffff;
  line-height: 1.6;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid #e5e7eb;
  backdrop-filter: blur(6px);
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
}

.brand-logo {
  width: 160px;
  height: auto;
  display: block;
}

.brand-mark {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tagline {
  font-size: 0.8rem;
  color: var(--color-muted);
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  gap: 1.1rem;
  font-size: 0.9rem;
}

.site-nav a {
  font-weight: 500;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
}

.hero {
  padding: 5rem 0 4rem;
  background: linear-gradient(135deg, #0f172a 0%, #111827 35%, #1f2937 100%);
  color: var(--color-foreground);
}

.hero .container {
  display: grid;
  gap: 3rem;
  align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.hero h1 {
  margin: 0 0 1.5rem;
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  letter-spacing: -0.01em;
}

.hero p {
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.85);
}

.hero .highlight {
  background-color: rgba(45, 216, 167, 0.15);
  padding: 1rem;
  border-radius: 0.8rem;
  margin-bottom: 1rem;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.5rem;
  border-radius: 999px;
  background-color: var(--color-primary);
  color: #041b14;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta:hover,
.cta:focus {
  transform: translateY(-1px);
  box-shadow: 0 12px 22px rgba(45, 216, 167, 0.25);
}

.cta:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.secondary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.35rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--color-foreground);
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.secondary-cta:hover,
.secondary-cta:focus {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.6);
}

.section {
  padding: 4.5rem 0;
}

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

.section.dark {
  background-color: var(--color-background);
  color: var(--color-foreground);
  text-align: center;
}

.section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.section-intro {
  max-width: 680px;
  margin-bottom: 2.5rem;
  color: var(--color-muted);
}

.two-column {
  display: grid;
  gap: 3rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.feature-list li {
  padding-left: 1.3rem;
  position: relative;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.card-grid {
  display: grid;
  gap: 1.8rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background-color: #ffffff;
  border: 1px solid var(--color-card-border);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: 1.3rem;
}

.card ul {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  color: var(--color-muted);
}

.approach-grid {
  display: grid;
  gap: 1.8rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.approach-grid article {
  background-color: #ffffff;
  border: 1px solid var(--color-card-border);
  border-radius: 1rem;
  padding: 1.8rem;
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.08);
}

.approach-grid h3 {
  margin-top: 0;
  margin-bottom: 0.8rem;
  font-size: 1.2rem;
}

.contact-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.site-footer {
  background-color: #0f172a;
  color: rgba(255, 255, 255, 0.7);
  padding: 1.5rem 0;
  font-size: 0.85rem;
}

.site-footer .container {
  display: flex;
  justify-content: center;
  text-align: center;
}

@media (max-width: 640px) {
  .site-header .container {
    flex-direction: column;
    gap: 0.8rem;
  }

  .site-nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding-top: 4rem;
  }

  .card {
    padding: 1.6rem;
  }

  .site-footer .container {
    text-align: center;
  }
}