.hero {
  padding: 100px 0;
  text-align: center;
}
.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 24px;
  line-height: 1.1;
}
.hero h1 .highlight {
  color: var(--primary);
}
.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
}
@media (max-width: 768px) {
  .hero {
    padding: 60px 0;
  }
  .hero h1 {
    font-size: 2.25rem;
  }
  .hero p {
    font-size: 1rem;
    padding: 0 16px;
  }
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
@media (max-width: 768px) {
  .hero-buttons .btn {
    width: 100%;
    max-width: 280px;
  }
}

.how-it-works {
  padding: 80px 0;
  background: var(--surface);
}
.how-it-works h2 {
  text-align: center;
  margin-bottom: 60px;
}
@media (max-width: 768px) {
  .how-it-works {
    padding: 60px 0;
  }
  .how-it-works h2 {
    margin-bottom: 40px;
  }
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.step {
  text-align: center;
}
@media (max-width: 768px) {
  .step {
    padding: 0 16px;
  }
}

.step-num {
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--primary);
  font-weight: 700;
}

.step h3 {
  margin-bottom: 12px;
}

.step p {
  color: var(--text-muted);
}

.encryption-flow {
  padding: 80px 0;
  background: var(--surface);
}
.encryption-flow h2 {
  text-align: center;
  margin-bottom: 40px;
}
@media (max-width: 768px) {
  .encryption-flow {
    padding: 60px 0;
  }
  .encryption-flow h2 {
    margin-bottom: 30px;
    font-size: 1.75rem;
  }
}

.encryption-diagram {
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  display: block;
}
@media (max-width: 768px) {
  .encryption-diagram {
    max-width: 120%;
    margin-left: -10%;
  }
}
@media (max-width: 480px) {
  .encryption-diagram {
    max-width: 150%;
    margin-left: -25%;
  }
}
.encryption-diagram text {
  font-family: var(--font-family);
}
.encryption-diagram path[marker-end] {
  animation: flowAnimation 2s ease-in-out infinite;
}

@keyframes flowAnimation {
  0%, 100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}
.quickstart {
  padding: 80px 0;
}
.quickstart h2 {
  text-align: center;
  margin-bottom: 40px;
}
@media (max-width: 768px) {
  .quickstart {
    padding: 60px 0;
  }
}

.code-block {
  background: #0f172a;
  color: #e2e8f0;
  padding: 24px;
  border-radius: 8px;
  overflow-x: auto;
  border: none;
  font-size: 0.9rem;
}
@media (max-width: 768px) {
  .code-block {
    padding: 16px;
    font-size: 0.8rem;
  }
}