:root {
  --blue: #6FA6DB;
  --grey-light: #D5D5D5;
  --grey-dark: #4A4A4A;
  --bg: #FFFFFF;
  --card-bg: #ffffff;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Raleway', sans-serif;
  background: var(--bg);
  color: var(--grey-dark);
  line-height: 1.6;
  scroll-behavior: smooth;
}

a {
  color: var(--blue);
  text-decoration: none;
}

header, nav, section, footer {
  width: 100%;
}

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(6px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 7vw;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  gap: 36px;
}

.logo {
  display: inline-flex;
  align-items: center;
  font-size: 24px;
  font-weight: 200;
  letter-spacing: 0.5px;
  gap: 6px;
}

.logo-blue {
  color: var(--blue);
}

.logo-grey {
  color: var(--grey-light);
}

.nav {
  position: relative;
  margin-left: 12px;
}

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 26px;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  color: var(--grey-dark);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.nav-links a:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--grey-light);
  border-radius: 10px;
  padding: 6px 10px;
  font-size: 18px;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 120px 7vw 80px;
  overflow: hidden;
  background: linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.5)), url('clouds.jpg') center / cover fixed no-repeat;
}

.hero-bg-shape {
  position: absolute;
  inset: 10% -20% auto auto;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle at 30% 30%, rgba(111, 166, 219, 0.18), transparent 55%),
              radial-gradient(circle at 70% 70%, rgba(111, 166, 219, 0.12), transparent 60%);
  filter: blur(6px);
  z-index: -1;
}

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

.label {
  display: inline-block;
  letter-spacing: 0.6px;
  font-size: 13px;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 600;
  background: rgba(111, 166, 219, 0.18);
  padding: 6px 12px;
  border-radius: 999px;
}

.hero-logo {
  font-size: clamp(56px, 7vw, 86px);
  margin: 18px 0 6px;
  font-weight: 200;
  letter-spacing: 4px;
}

.tagline {
  font-size: 22px;
  margin: 0 0 14px;
  color: var(--grey-dark);
  font-weight: 500;
}

.hero-sub {
  font-size: 17px;
  max-width: 640px;
  margin: 0 auto 28px;
  color: #5a5a5a;
}

.hero-ctas {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  border: 1.5px solid var(--blue);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.btn.primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 8px 22px rgba(111, 166, 219, 0.25);
}

.btn.secondary {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.82);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(111, 166, 219, 0.18);
}

.scroll-indicator {
  margin-top: 32px;
  font-size: 13px;
  letter-spacing: 1px;
  color: #7a7a7a;
}

.section {
  padding: 90px 7vw;
  background: var(--bg);
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  margin: 10px 0;
  font-size: 32px;
  font-weight: 600;
}

.section-sub {
  color: #6a6a6a;
  max-width: 720px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 30px;
  align-items: start;
}

.about-text p {
  margin: 0 0 14px;
}

.about-card {
  background: var(--card-bg);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(213, 213, 213, 0.6);
}

.about-card h3 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 20px;
}

.about-card ul {
  padding-left: 18px;
  margin: 0;
  display: grid;
  gap: 10px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.card {
  background: var(--card-bg);
  padding: 22px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(213, 213, 213, 0.6);
  display: grid;
  gap: 10px;
}

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(111, 166, 219, 0.12);
  color: var(--blue);
  font-weight: 600;
  font-size: 16px;
}

.card-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--blue);
  fill: rgba(111, 166, 219, 0.16);
}

.card h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.card p {
  margin: 0;
  color: #5c5c5c;
}

.contact-section .contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
  gap: 20px;
  text-align: center;
}

.contact-section {
  background: linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.5)), url('clouds.jpg') center / cover fixed no-repeat;
}

.contact-text p {
  margin: 0 0 12px;
}

.contact-highlight {
  font-size: 20px;
  font-weight: 600;
  color: var(--grey-dark);
}

.contact-highlight a {
  color: #ffffff;
}

.footer {
  text-align: center;
  padding: 22px 7vw;
  font-size: 13px;
  color: #ffffff;
  background: linear-gradient(rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.5)), url('clouds.jpg') center / cover fixed no-repeat;
}

@media (max-width: 900px) {
  .about-grid,
  .contact-section .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header {
    padding: 14px 6vw;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 52px;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 0;
    min-width: 200px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 12px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
    display: none;
  }

  .nav-links.show {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 12px 16px;
    width: 100%;
  }

  .hero {
    padding: 110px 6vw 70px;
  }

  .hero-sub {
    font-size: 16px;
  }

  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}