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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background: #f7f7f7;
  color: #1a1a1a;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: white;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  flex-wrap: wrap;
}

.logo {
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: 2px;
}

.nav-menu a {
  margin-right: 1.5rem;
  text-decoration: none;
  color: #1a1a1a;
  font-weight: 600;
}

.currency-cart {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.currency-btn,
.cart-btn,
.get-trezor-btn {
  background: #216951;
  color: white;
  border: none;
  padding: 0.6rem 1.1rem;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 600;
}

.get-trezor-btn {
  background: #216951;
  white-space: nowrap;
}

.currency-btn:hover,
.cart-btn:hover,
.get-trezor-btn:hover {
  background: #185039;
}

main {
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
}

.hero h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.hero p {
  margin-bottom: 1.5rem;
  color: #555;
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: #216951;
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 20px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.3s ease;
}

.btn-primary:hover {
  background: #185039;
}

.btn-secondary {
  background: #ddd;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 20px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.3s ease;
}

.btn-secondary:hover {
  background: #bbb;
}

.how-it-works h2 {
  font-weight: 800;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

.step-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.step {
  background: white;
  border-radius: 14px;
  padding: 1.2rem 1.5rem;
  flex: 1 1 45%;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.step-number {
  background: #216951;
  color: white;
  font-weight: 700;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.8rem;
  user-select: none;
}

.step h3 {
  margin-bottom: 0.5rem;
}

.step p {
  color: #555;
  font-size: 0.95rem;
}

.expert-guidance {
  display: flex;
  margin-top: 3rem;
  background: white;
  padding: 1.5rem;
  border-radius: 14px;
  flex-wrap: wrap;
  gap: 2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.image-container {
  flex: 1 1 300px;
}

.image-container img {
  width: 100%;
  border-radius: 12px;
  object-fit: cover;
  display: block;
}

.expert-text {
  flex: 1 1 300px;
}

.expert-text h2 {
  font-weight: 900;
  margin-bottom: 1rem;
}

.expert-text ul {
  list-style-type: none;
  margin-bottom: 1rem;
  padding-left: 0;
}

.expert-text ul li {
  padding-left: 1.2rem;
  position: relative;
  margin-bottom: 0.6rem;
  color: #555;
}

.expert-text ul li::before {
  content: '✔';
  position: absolute;
  left: 0;
  color: #216951;
  font-weight: bold;
}

.expert-text button {
  margin-bottom: 0.8rem;
}

.expert-text small {
  color: #888;
}

@media (max-width: 720px) {
  .nav-menu {
    flex-basis: 100%;
    margin: 0.5rem 0;
  }

  .step {
    flex: 1 1 100%;
  }

  .expert-guidance {
    flex-direction: column;
  }
}