@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700;800&family=Sora:wght@600;700;800&display=swap");

:root {
  --primary: #ffffff;
  --secondary: #000000;
  --line: #000000;
  --muted: #2b2b2b;
  --soft: rgba(255, 255, 255, 0.86);
  --shadow: 0 18px 42px rgba(0, 0, 0, 0.14);
  --page-background: url("https://img.magnific.com/free-vector/modern-style-grey-zig-zag-stripe-abstract-wallpaper_1017-59367.jpg?semt=ais_hybrid&w=740&q=80");
  --font-heading: "Sora", "Aptos Display", "Segoe UI", sans-serif;
  --font-body: "IBM Plex Sans", "Aptos", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--secondary);
  background-color: var(--primary);
  background-image: var(--page-background);
  background-size: 100% 100%;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  font-family: var(--font-body);
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 3px solid var(--secondary);
  outline-offset: 5px;
}

.landing {
  width: 100vw;
  min-height: 100vh;
  display: grid;
  place-items: center;
  gap: 42px;
  padding: 48px;
}

.intro {
  max-width: 920px;
  text-align: center;
}

.label {
  margin: 0 0 14px;
  color: var(--secondary);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

h1 {
  margin: 0;
  color: var(--secondary);
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 7vw, 6rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.subtitle {
  max-width: 680px;
  margin: 20px auto 0;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.cards {
  width: min(860px, 100%);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  background: var(--soft);
  border: 1px solid var(--secondary);
  border-radius: 28px;
  box-shadow: var(--shadow);
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.card:hover {
  transform: translateY(-8px);
  background: var(--secondary);
  color: var(--primary);
}

.card span {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  background: var(--secondary);
  color: var(--primary);
  border-radius: 999px;
  font-family: var(--font-heading);
  font-weight: 900;
}

.card:hover span {
  background: var(--primary);
  color: var(--secondary);
}

.card strong {
  max-width: 180px;
  font-family: var(--font-heading);
  font-size: 1.55rem;
  line-height: 1.05;
}

.author-credit {
  margin: 0;
  color: var(--secondary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 800;
  text-align: center;
}

.page {
  width: 100vw;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 40px;
}

.page-card {
  width: min(680px, 100%);
  padding: 34px;
  background: var(--soft);
  border: 1px solid var(--secondary);
  border-radius: 28px;
  box-shadow: var(--shadow);
  text-align: center;
}

.back {
  display: inline-flex;
  margin-top: 24px;
  padding: 12px 18px;
  background: var(--secondary);
  color: var(--primary);
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 800;
}

@media (max-width: 920px) {
  .landing {
    padding: 32px 22px;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .cards {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: 150px;
  }
}