body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #f4f4f4;
  color: #222;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

header {
  background: #0b1c2d;
  padding: 15px 0;
}

.header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  height: 70px;
}

nav a {
  color: #d4af37;
  margin-left: 20px;
  text-decoration: none;
  font-weight: 600;
}

.hero {
  background: linear-gradient(rgba(0,0,0,.6), rgba(0,0,0,.6)),
              url('https://images.unsplash.com/photo-1589829545856-d10d557cf95f');
  background-size: cover;
  padding: 120px 0;
  color: #fff;
  text-align: center;
}

.hero h1 {
  font-size: 48px;
}

.hero span {
  color: #d4af37;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 25px;
  background: #d4af37;
  color: #000;
  text-decoration: none;
  font-weight: bold;
}

.section {
  padding: 60px 0;
}

.section.dark {
  background: #0b1c2d;
  color: #fff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
  gap: 20px;
}

.card {
  background: #d4af37;
  color: #000;
  padding: 20px;
  font-weight: bold;
  text-align: center;
  border-radius: 6px;
}

form input, form textarea {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
}

form button {
  background: #0b1c2d;
  color: #fff;
  border: none;
  padding: 12px 20px;
  cursor: pointer;
}

.success {
  background: #e6ffe6;
  padding: 10px;
  margin-bottom: 15px;
  border-left: 4px solid green;
}

footer {
  background: #000;
  color: #aaa;
  text-align: center;
  padding: 15px 0;
}