:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #202733;
  background: #f4f5f7;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;

  --accent: #376fdb;
  --muted: #697586;
  --border: #e3e7ed;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(ellipse at 50% 8%, rgb(219 230 250 / 60%), transparent 42%),
    #f4f5f7;
}

a {
  color: inherit;
}

.page-shell {
  width: min(100% - 48px, 1120px);
  min-height: 100vh;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  padding: 32px 0 24px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--accent);
  box-shadow: 0 6px 16px rgb(55 111 219 / 24%);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.eyebrow,
.brand-name,
.header-note,
h1,
.intro-copy,
.resource-type,
.resource-title,
.resource-description,
.resource-action,
.site-footer {
  margin: 0;
}

.eyebrow {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.brand-name {
  font-size: 17px;
  font-weight: 680;
  letter-spacing: -0.035em;
}

.header-note {
  color: var(--muted);
  font-size: 13px;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: 72px 92px;
}

.intro {
  max-width: 650px;
  margin: 0 auto 38px;
  text-align: center;
}

.intro h1 {
  margin-top: 12px;
  font-size: clamp(36px, 5.5vw, 58px);
  font-weight: 690;
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.intro-copy {
  max-width: 520px;
  margin: 16px auto 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.resource-card {
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 25px;
  border: 1px solid var(--border);
  border-radius: 19px;
  background: rgb(255 255 255 / 90%);
  box-shadow: 0 12px 32px rgb(31 45 66 / 5%);
  text-decoration: none;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.resource-card:hover {
  transform: translateY(-4px);
  border-color: #cbd7ed;
  box-shadow: 0 20px 42px rgb(31 45 66 / 10%);
}

.resource-card:focus-visible,
.brand:focus-visible {
  outline: 3px solid rgb(55 111 219 / 70%);
  outline-offset: 4px;
}

.resource-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  border-radius: 14px;
}

.resource-icon svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.resource-card--notes .resource-icon {
  background: #edf3ff;
  color: #376fdb;
}

.resource-card--flashcards .resource-icon {
  background: #eaf6f0;
  color: #2d8a62;
}

.resource-card--exams .resource-icon {
  background: #fff4e5;
  color: #bc751a;
}

.resource-type {
  color: #7a8594;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.resource-title {
  margin-top: 8px;
  font-size: 21px;
  font-weight: 660;
  letter-spacing: -0.035em;
}

.resource-description {
  margin-top: 9px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.resource-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 24px;
  color: #2d5fbd;
  font-size: 13px;
  font-weight: 700;
}

.resource-action svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
  transition: transform 180ms ease;
}

.resource-card:hover .resource-action svg {
  transform: translateX(3px);
}

.resource-card--notes:hover .resource-action svg {
  transform: translateY(2px);
}

.site-footer {
  display: flex;
  justify-content: center;
  gap: 9px;
  color: #9099a6;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
}

@media (max-width: 900px) {
  .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .resource-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 620px) {
  .page-shell {
    width: min(100% - 30px, 520px);
    padding-top: 20px;
  }

  .header-note {
    display: none;
  }

  main {
    justify-content: flex-start;
    padding-block: 64px 72px;
  }

  .intro {
    margin-bottom: 29px;
    text-align: left;
  }

  .intro-copy {
    margin-left: 0;
    font-size: 15px;
  }

  .resource-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .resource-card,
  .resource-card:last-child {
    min-height: 245px;
    grid-column: auto;
    padding: 21px;
  }

  .resource-icon {
    margin-bottom: 19px;
  }

  .site-footer {
    font-size: 8px;
    letter-spacing: 0.1em;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}