:root {
  color-scheme: light;
  font-family:
    Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", Arial,
    sans-serif;
  background: #f4f6f8;
  color: #17212b;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background: #f4f6f8;
}

.page-shell {
  width: min(100% - 32px, 680px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 32px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 30px;
}

.ad-space {
  width: 100%;
  min-height: 120px;
  overflow: hidden;
  border-radius: 16px;
  background: #fff;
}

.link-list {
  display: grid;
  gap: 16px;
}

.action-button {
  min-height: 64px;
  padding: 17px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  background: #f3270b;
  box-shadow: 0 5px 12px rgb(18 31 43 / 18%);
  color: #fff;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
  transition:
    transform 160ms ease,
    background-color 160ms ease,
    box-shadow 160ms ease;
}

.action-button:hover {
  background: #d91f06;
  box-shadow: 0 7px 16px rgb(18 31 43 / 23%);
  transform: translateY(-1px);
}

.action-button:active {
  transform: translateY(1px);
}

.action-button:focus-visible {
  outline: 4px solid rgb(243 39 11 / 28%);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 480px) {
  .page-shell {
    width: min(100% - 24px, 680px);
    padding: 20px 0;
    gap: 22px;
  }

  .ad-space {
    min-height: 100px;
    border-radius: 12px;
  }

  .action-button {
    min-height: 58px;
    padding: 15px 18px;
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .action-button {
    transition: none;
  }
}