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

body {
  font-family: Arial, Helvetica, sans-serif;
  background: #111827;
  color: #f8fbff;
  min-height: 100vh;
}

a {
  text-decoration: none;
}

.home-page {
  padding: 0;
}

.home-box {
  width: 100%;
  max-width: none;
  margin: 0;
}

.top-tabs {
  width: 100%;
  background-color: #3a3ea1;
  border-radius: 0;
  padding: 24px 32px;
  display: flex;
  justify-content: flex-start;
  gap: 34px;
  flex-wrap: wrap;
}

.top-tabs a {
  color: #ffffff;
  font-size: 1.3rem;
  font-weight: 500;
  transition: opacity 0.2s ease;
}

.top-tabs a:hover {
  opacity: 0.82;
}

.top-tabs a.active {
  text-decoration: underline;
  text-underline-offset: 8px;
}

.page-header {
  padding: 0;
  background-color: #3a3ea1;
}

.page-shell {
  width: 100%;
  max-width: none;
  margin: 0;
}

.page-main {
  padding: 52px 20px 50px;
  background: #111827;
}

.content-panel {
  max-width: 1100px;
  margin: 0 auto;
  background: #1b2540;
  border: 1px solid #2b3658;
  border-radius: 16px;
  padding: 38px 36px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
}

.content-panel h2 {
  color: #f8fbff;
  font-size: 2.7rem;
  margin-bottom: 16px;
}

.page-intro,
.about-copy {
  color: #dbe7ff;
  font-size: 1.12rem;
  line-height: 1.7;
}

.about-copy + .about-copy {
  margin-top: 14px;
}

.item-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 28px;
}

.item-card {
  display: block;
  background: #3a3ea1;
  border: none;
  border-radius: 12px;
  padding: 22px 24px;
  transition: transform 0.18s ease, background 0.18s ease;
}

.item-title {
  display: block;
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.item-subtitle {
  display: block;
  color: #dbe7ff;
  font-size: 1.02rem;
}

.link-card:hover {
  background: #2f338a;
  transform: translateY(-2px);
}

@media (max-width: 700px) {
  .top-tabs {
    gap: 20px;
    padding: 20px 18px;
  }

  .top-tabs a {
    font-size: 1.02rem;
  }

  .page-main {
    padding: 28px 14px 30px;
  }

  .content-panel {
    padding: 24px 18px;
    border-radius: 12px;
  }

  .content-panel h2 {
    font-size: 2rem;
  }

  .item-title {
    font-size: 1.2rem;
  }

  .item-card {
    padding: 18px 18px;
  }
}