* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  background-color: #fcfcf4;
  color: #2b2b2b;
  min-height: 100vh;
  padding: 40px 6vw;
}

header {
  margin-bottom: 30px;
}

.back-btn {
  background-color: #3b50c4;
  color: #ffffff;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(59, 80, 196, 0.2);
  display: inline-block;
}

.back-btn:hover {
  background-color: #2e40a3;
  transform: translateY(-2px);
}

.skills-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-title {
  color: #3b50c4;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  margin-bottom: 36px;
  letter-spacing: -1px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.skill-card {
  background: #ffffff;
  border: 2px solid #e2e8f0;
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(59, 80, 196, 0.12);
  border-color: #3b50c4;
}

.skill-card h2 {
  color: #3b50c4;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  border-bottom: 2px solid #f0f4ff;
  padding-bottom: 12px;
  letter-spacing: -0.5px;
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.skill-list li {
  font-size: 1rem;
  font-weight: 500;
  color: #4a5568;
  position: relative;
  padding-left: 18px;
  line-height: 1.4;
}

.skill-list li::before {
  content: "•";
  color: #3b50c4;
  font-weight: bold;
  font-size: 1.2rem;
  position: absolute;
  left: 0;
  top: -2px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-text {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.25s; }
.delay-3 { animation-delay: 0.4s; }