:root {
  --ink: #17242b;
  --slate: #26383f;
  --blue: #1597c4;
  --blue-dark: #08759f;
  --mist: #eef7f9;
  --warm: #f5f1e9;
}

html { scroll-behavior: smooth; }
body { color: var(--ink); background: #fff; }
body.menu-open { overflow: hidden; }

.site-header {
  background: rgba(23, 36, 43, .96);
  backdrop-filter: blur(14px);
  box-shadow: 0 12px 35px rgba(9, 27, 36, .14);
}

.nav-link {
  position: relative;
  color: #dce8ec;
  transition: color .25s ease;
}
.nav-link:hover, .nav-link.active { color: #53c5ea; }
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: -8px;
  height: 2px;
  background: #53c5ea;
  transition: right .25s ease;
}
.nav-link:hover::after, .nav-link.active::after { right: 0; }

.hero {
  min-height: 660px;
  background:
    linear-gradient(90deg, rgba(14, 31, 39, .88), rgba(14, 31, 39, .44) 58%, rgba(14, 31, 39, .18)),
    url("pic/home-top.png") center/cover no-repeat;
}
.page-hero {
  min-height: 470px;
  background-position: center;
  background-size: cover;
}

.eyebrow {
  color: var(--blue);
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: .75rem;
}
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  min-height: 50px;
  padding: .75rem 1.4rem;
  border-radius: 999px;
  font-weight: 800;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 12px 30px rgba(21, 151, 196, .27);
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-2px); }
.btn-secondary { border: 1px solid rgba(255,255,255,.55); color: #fff; }
.btn-secondary:hover { background: #fff; color: var(--ink); transform: translateY(-2px); }

.service-card {
  overflow: hidden;
  border: 1px solid #dce9ed;
  border-radius: 1.5rem;
  background: #fff;
  box-shadow: 0 18px 50px rgba(25, 64, 78, .08);
  transition: transform .3s ease, box-shadow .3s ease;
}
.service-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 24px 60px rgba(25, 64, 78, .16);
}
.service-card img { transition: transform .6s ease; }
.service-card:hover img { transform: scale(1.045); }

.stat {
  border-left: 3px solid var(--blue);
  padding-left: 1.1rem;
}
.check-list li {
  position: relative;
  padding-left: 1.8rem;
  margin-top: .8rem;
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--blue);
  font-weight: 900;
}

.contact-input {
  width: 100%;
  border: 1px solid #cbdde3;
  background: #fff;
  border-radius: .9rem;
  padding: .9rem 1rem;
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.contact-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(21, 151, 196, .12);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 767px) {
  .hero { min-height: 590px; background-position: 62% center; }
  .page-hero { min-height: 390px; }
  #mobile-menu {
    position: fixed;
    top: 78px;
    right: 0;
    left: 0;
    height: calc(100vh - 78px);
    background: rgba(23, 36, 43, .985);
    padding: 2rem 1.5rem;
    overflow-y: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}