body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
}

.hero {
  position: relative;
  background: url('https://alpinisty.co.ua/img/industrial-climber.avif') center/cover no-repeat;
  height: 100vh;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero .overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 3.6); /* темна напівпрозора підкладка */
  z-index: 1;
}

.hero .hero-content {
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: 3rem;
  font-weight: bold;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 3.8);
}

.hero p.lead {
  font-size: 1.25rem;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.8);
}
#article h2,
#article h3 {
  color: #1f1f1f;
}

#article p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: #333;
}

#article a.btn {
  padding: 12px 30px;
  font-size: 1.1rem;
}
.btn-outline-dark:hover {
  background-color: #FFF7BF;
  color: #212529;
  border-color: #212529;
}
.partners h2 {
  font-weight: 600;
  color: #333;
}

.partner-link img {
  max-height: 180px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.partner-link:hover img {
  transform: scale(1.05);
  opacity: 0.8;
}
#portfolio .card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#portfolio .card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

footer {
  background: #565656;
  color: #aaa;
  padding: 20px 0;
}