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

:root {
  --bg: #f4f7fb;
  --primary: #0078d4;
  --primary-dark: #005a9e;
  --text: #1f2937;
  --muted: #6b7280;
  --white: #ffffff;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --radius: 14px;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1000px;
  margin: 0 auto;
}

.hero {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 10px;
}

.tagline {
  font-size: 1.2rem;
  margin-bottom: 20px;
  opacity: 0.95;
}

.intro {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1rem;
}

main {
  margin: 40px auto;
}

.card {
  background: var(--white);
  padding: 28px;
  margin-bottom: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card h2 {
  color: var(--primary);
  margin-bottom: 16px;
  font-size: 1.5rem;
  border-bottom: 2px solid #e5e7eb;
  padding-bottom: 8px;
}

.item {
  margin-bottom: 20px;
}

.item:last-child {
  margin-bottom: 0;
}

.item h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.date {
  display: inline-block;
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
}

.skills-list li {
  background: #e8f1fb;
  color: var(--primary-dark);
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: bold;
}

.visitor-card {
  text-align: center;
}

#visitor-count {
  font-weight: bold;
  color: var(--primary);
  font-size: 1.3rem;
}

.note {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 8px;
}

footer {
  background: #111827;
  color: #d1d5db;
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
}

@media (max-width: 768px) {
  .hero {
    padding: 60px 0;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .tagline {
    font-size: 1rem;
  }

  .card {
    padding: 22px;
  }

  .card h2 {
    font-size: 1.3rem;
  }
}