:root {
  --bg: #fefefe;
  --fg: #1c1c1e;
  --accent: #3f71ff;
  --muted: #555;
  --highlight: #ffda79;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

header {
  background: white;
  border-bottom: 1px solid #ddd;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}

nav a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: var(--fg);
  font-weight: 500;
}

nav a:hover {
  color: var(--accent);
}

.hero {
  max-width: 850px;
  margin: 1rem auto 3rem;
  padding: 0 2rem;
  text-align: center;
}

.hero img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 700px;
  margin: 0 auto;
}

.buttons {
  margin-top: 2rem;
}

.buttons a {
  display: inline-block;
  margin: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: 8px;
  text-decoration: none;
  background: var(--accent);
  color: white;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.buttons a:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0,0,0,0.15);
}

.section {
  max-width: 900px;
  margin: 4rem auto;
  padding: 0 2rem;
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--accent);
}

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

footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.875rem;
  color: var(--muted);
}