:root {
  --color-primary: #0099b8;
  --color-secondary: #0a4e7a;
  --color-accent: #13b7d6;
  --color-surface: #ffffff;
  --color-surface-muted: #f3f6f8;
  --color-text: #15232f;
  --color-text-muted: #5b6873;
  --color-border: #d7e1e8;
  --color-overlay: rgba(9, 21, 31, 0.6);
  --shadow-soft: 0 18px 48px rgba(14, 34, 50, 0.12);
  --shadow-card: 0 12px 32px rgba(15, 36, 54, 0.08);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container-width: min(1120px, calc(100% - 2rem));
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--color-text);
  background: linear-gradient(180deg, #f8fbfc 0%, #eef4f7 100%);
  line-height: 1.6;
}

img {
  max-width: 100%;
}

.container {
  width: var(--container-width);
  margin: 0 auto;
}

.site-header {
  color: #fff;
}

.nav {
  position: absolute;
  inset: 0 0 auto 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0;
}

.brand {
  color: inherit;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a,
.footer-links a,
.social-links a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition), transform var(--transition);
}

.nav-links a:hover,
.footer-links a:hover,
.social-links a:hover {
  color: var(--color-accent);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 7rem 0 4rem;
  background:
    linear-gradient(135deg, rgba(0, 153, 184, 0.2), rgba(10, 78, 122, 0.55)),
    url('assets/hero-bg.jpg') center/cover no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4, 17, 27, 0.48), var(--color-overlay));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  text-align: left;
}

.eyebrow {
  margin: 0 0 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
}

.hero h1,
.section-heading h2 {
  margin: 0;
  line-height: 1.05;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 5.4rem);
  max-width: 10ch;
}

.hero-copy {
  margin: 1.25rem 0 0;
  font-size: clamp(1rem, 2vw, 1.2rem);
  max-width: 58ch;
  color: rgba(255, 255, 255, 0.9);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 14px 34px rgba(0, 153, 184, 0.28);
}

.btn-primary:hover {
  background: #00a8ca;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.16);
}

.hero-highlights {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin: 2rem 0 0;
  padding: 0;
  color: rgba(255, 255, 255, 0.9);
}

.hero-highlights li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-highlights i
.icon-wrap,
.icon-wrap i,
.feature-card i,
.quote-icon,
.quote-icon i,
.social-links i {
  color: var(--color-primary);
}

.section {
  padding: 5.5rem 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 2.25rem;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.section-heading p:last-child {
  color: var(--color-text-muted);
  margin-top: 1rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid rgba(10, 78, 122, 0.08);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 153, 184, 0.26);
  box-shadow: var(--shadow-soft);
}

.benefit-grid,
.testimonial-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.benefit-card,
.testimonial-card {
  padding: 1.6rem;
}

.icon-wrap,
.quote-icon {
  flex-shrink: 0;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: rgba(0, 153, 184, 0.12);
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.benefit-card h3,
.feature-card h3,
.testimonial-card span {
  margin: 0 0 0.75rem;
}

.benefit-card p,
.feature-card p,
.testimonial-card p,
.footer-copy {
  margin: 0;
  color: var(--color-text-muted);
}

.feature-layout,
.contact-layout {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  align-items: start;
}

.feature-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card {
  padding: 1.4rem;
}

.feature-card h3 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

.testimonial-card span {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-secondary);
}

.contact {
  background: linear-gradient(180deg, rgba(0, 153, 184, 0.06), rgba(10, 78, 122, 0.08));
}

.contact-form {
  padding: 1.6rem;
  display: grid;
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: 0.45rem;
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
  font: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(0, 153, 184, 0.14);
}

.site-footer {
  background: #071c2a;
  color: rgba(255, 255, 255, 0.82);
  padding: 2.5rem 0 1.25rem;
}

.footer-layout {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1.4fr 1fr auto;
  align-items: start;
}

.footer-brand,
.social-links {
  color: #fff;
}

.footer-links {
  display: grid;
  gap: 0.65rem;
}

.social-links {
  display: flex;
  gap: 0.85rem;
  font-size: 1.1rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 1.75rem;
  padding-top: 1rem;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.62);
}

@media (max-width: 1024px) {
  .benefit-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-layout,
  .contact-layout,
  .footer-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav {
    position: static;
    color: var(--color-text);
    padding: 1rem 0;
  }

  .nav-links {
    gap: 1rem;
    font-size: 0.95rem;
  }

  .hero {
    min-height: auto;
    padding-top: 4rem;
    padding-bottom: 3rem;
  }

  .hero-content {
    text-align: left;
  }

  .benefit-grid,
  .feature-grid,
  .testimonial-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 4rem 0;
  }

  .hero-actions,
  .hero-highlights {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(180deg, #08131c 0%, #0c1d28 100%);
    color: #e8f1f5;
  }

  .section-heading p:last-child,
  .benefit-card p,
  .feature-card p,
  .testimonial-card p,
  .footer-copy {
    color: rgba(232, 241, 245, 0.72);
  }

  .card,
  .contact-form input,
  .contact-form textarea {
    background: rgba(10, 24, 34, 0.88);
    border-color: rgba(181, 208, 221, 0.12);
    color: #f4fbff;
  }

  .nav {
    color: #fff;
  }

  .site-footer {
    background: #05131d;
  }
}