:root {
  color-scheme: light;
  --color-bg: #faf8f5;
  --color-text: #2b2620;
  --color-accent: #7a5c3e;
  --color-love: #b3697a;
  --color-luck: #4a6f6f;
  --color-border: #ddd6cc;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  line-height: 1.7;
}

main {
  width: 100%;
  max-width: 640px;
  padding: 3rem 1.5rem;
  text-align: center;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

p.subtitle {
  color: #6b6355;
  margin-top: 0;
  margin-bottom: 2.5rem;
}

.section-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.button {
  display: inline-block;
  width: 100%;
  max-width: 320px;
  padding: 0.9rem 1.5rem;
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  text-decoration: none;
  font-weight: bold;
  color: #fff;
}

.button--love {
  background-color: var(--color-love);
}

.button--luck {
  background-color: var(--color-luck);
}

.notice {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: #6b6355;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

.back-link {
  display: inline-block;
  margin-top: 2rem;
  color: var(--color-accent);
}