* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  min-height: 100%;
  font-family: Arial, sans-serif;
}

body {
  background: #f5f5f5;
}

/* Full-width banner */
.hero-banner {
  position: relative;
  width: 100%;
  min-height: 430px;
  background-image:
    linear-gradient(rgba(0,0,0,.25), rgba(0,0,0,.25)),
    url("https://images.unsplash.com/photo-1500534623283-312aade485b7?auto=format&fit=crop&w=2000&q=85");
  background-size: cover;
  background-position: center;
}

/* Transparent menu placed on banner */
.navbar {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  min-height: 70px;
  padding: 0 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  z-index: 9999;
}

.logo {
  color: #fff;
  text-decoration: none;
  font-size: 24px;
  font-weight: bold;
  text-shadow: 0 1px 4px rgba(0,0,0,.7);
}

/* Desktop menu */
.main-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  background: transparent;
}

.main-menu a {
  display: block;
  padding: 24px 16px;
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  background: transparent;
  text-shadow: 0 1px 4px rgba(0,0,0,.8);
}

.main-menu a:hover {
  background: rgba(255,255,255,.18);
}

/* Mobile toggle */
.menu-toggle {
  display: none;
  width: 44px;
  height: 40px;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 7px;
}

.menu-toggle span {
  display: block;
  height: 3px;
  margin: 5px 0;
  background: #fff;
  border-radius: 3px;
}

/* Banner text */
.banner-content {
  position: absolute;
  left: 5%;
  bottom: 70px;
  color: #fff;
  text-shadow: 0 2px 6px rgba(0,0,0,.7);
}

.banner-content h1 {
  font-size: clamp(36px, 6vw, 72px);
}

.banner-content p {
  margin-top: 8px;
  font-size: 20px;
}

/* Page */
.page-content {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 50px 5%;
}

.page-content h1 {
  margin-bottom: 15px;
}

/* Mobile */
@media (max-width: 768px) {
  .hero-banner {
    min-height: 360px;
  }

  .navbar {
    min-height: 60px;
    padding: 0 20px;
  }

  .menu-toggle {
    display: block;
  }

  /* Transparent dropdown over banner */
  .main-menu {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    background: rgba(0,0,0,.25);
    backdrop-filter: blur(3px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .main-menu.active {
    display: flex;
  }

  .main-menu a {
    width: 100%;
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,.2);
  }

  .banner-content {
    left: 20px;
    bottom: 45px;
  }

  .page-content {
    padding: 30px 20px;
  }
}