* {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  background: #0d1117;
  color: #e6edf3;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

img {
  max-width: 100%;
}

.container {
  width: min(1050px, 92%);
  margin: 0 auto;
  padding: 70px 0;
}

.hero {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-bottom: 60px;
}

.hero-content {
  flex: 1 1 auto;
  min-width: 0;
  text-align: left;
}

.hero-image {
  flex: 0 0 240px;
  width: 240px;
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}

.profile-image {
  width: 240px;
  height: 240px;
  max-width: 240px;
  max-height: 240px;
  display: block;
  object-fit: contain;
}

.ccna-badge {
    width: 125px;
    padding: 10px;
    display: block;
    background: #161b22;
    border: 1px solid #30363d;
    border-radius: 12px;
}

.eyebrow {
  color: #58a6ff;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.85rem;
  font-weight: bold;
  margin: 0 0 15px;
}

h1 {
  font-size: clamp(3.5rem, 6vw, 4.8rem);
  line-height: 1;
  margin: 0;
  white-space: nowrap;
}

h2 {
  margin: 25px 0;
  color: #8b949e;
  font-weight: 400;
  font-size: clamp(1.25rem, 3vw, 2rem);
}

.intro {
  color: #c9d1d9;
  font-size: 1.1rem;
  margin: 0;
  max-width: 650px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 34px;
}

.button {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
}

.primary {
  background: #238636;
  color: white;
}

.secondary {
  border: 1px solid #30363d;
  color: #e6edf3;
}

.card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 14px;
  padding: 30px;
  margin-bottom: 25px;
}

.card h3 {
  margin-top: 0;
  color: #58a6ff;
}

ul {
  padding-left: 20px;
}

a {
  color: #58a6ff;
}

@media (max-width: 900px) {

  .container {
    padding: 35px 0;
  }

  .hero {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 28px;
    padding-bottom: 45px;
  }

  .hero-content {
    order: 1;
    text-align: center;
  }

  .hero-image {
    order: 2;
    margin-top: 0;
    width: auto;
    gap: 18px;
  }

  .profile-image {
    width: 170px;
    height: 170px;
    max-width: 170px;
    max-height: 170px;
    margin: 0 auto;
  }

  .ccna-badge {
    width: 80px;
    margin: 0 auto;
  }

  h1 {
    font-size: clamp(2.6rem, 12vw, 4rem);
    white-space: normal;
  }

  h2 {
    font-size: 1.5rem;
  }

  .intro {
    font-size: 1rem;
  }

  .actions {
    justify-content: center;
  }
}