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

body {
  font-family: "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  color: #2d2d2d;
  background-color: #fffbf7;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.back-link {
  display: inline-block;
  color: #8c8c8c;
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 32px;
}

.back-link:hover {
  color: #e07a5f;
}

h1 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.last-updated {
  font-size: 13px;
  color: #8c8c8c;
  margin-bottom: 40px;
}

h2 {
  font-size: 18px;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #f0ebe5;
}

h3 {
  font-size: 16px;
  font-weight: 700;
  margin-top: 24px;
  margin-bottom: 8px;
}

p {
  margin-bottom: 16px;
  font-size: 15px;
}

ul, ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

li {
  margin-bottom: 6px;
  font-size: 15px;
}

a {
  color: #e07a5f;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.contact-email {
  font-weight: 500;
}

/* index page */
.index-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  text-align: center;
}

.index-container .app-name {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.index-container .app-description {
  font-size: 14px;
  color: #8c8c8c;
  margin-bottom: 48px;
}

.link-list {
  list-style: none;
  padding: 0;
  width: 100%;
  max-width: 320px;
}

.link-list li {
  margin-bottom: 12px;
}

.link-list a {
  display: block;
  padding: 16px;
  background-color: #fff;
  border-radius: 12px;
  color: #2d2d2d;
  font-size: 15px;
  font-weight: 500;
  transition: background-color 0.2s;
}

.link-list a:hover {
  background-color: #f8f3ee;
  text-decoration: none;
}