body {
  font-family: 'Segoe UI', 'Hiragino Sans', 'Meiryo', sans-serif;
  background: #fff;
  margin: 0;
  color: #222;
}

.language-switcher {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  max-width: 900px;
  margin: 12px auto 0 auto;
  padding: 0 16px;
}

.lang-btn {
  display: inline-block;
  text-decoration: none;
  color: #999;
  font-size: 0.8rem;
  transition: color 0.2s;
}

.lang-btn:hover {
  color: #666;
}

.lang-btn.active {
  color: #333;
  font-weight: 500;
}
.appstore-header {
  display: flex;
  align-items: flex-start;
  padding: 32px 0 16px 0;
  max-width: 900px;
  margin: 0 auto;
  border-bottom: 1px solid #e0e0e0;
}
.appstore-icon {
  width: 120px;
  height: 120px;
  border-radius: 24px;
  background: #eee;
  margin-right: 32px;
}
.appstore-meta {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.appstore-title {
  margin: 0 0 8px 0;
  font-size: 2.4rem;
  font-weight: bold;
}
.appstore-author {
  margin: 0 0 18px 0;
  color: #888;
  font-size: 1.1rem;
}
.appstore-download-block {
  display: flex;
  align-items: center;
  gap: 12px;
}
.version-select {
  font-size: 1rem;
  padding: 6px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #fafbfc;
}
.appstore-download-btn {
  display: inline-block;
  background: #007aff;
  color: #fff;
  padding: 10px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  border: none;
  transition: background 0.2s;
}
.appstore-download-btn:hover {
  background: #005bb5;
}
.appstore-screenshots {
  display: flex;
  justify-content: flex-start;
  gap: 18px;
  max-width: 900px;
  margin: 32px auto 0 auto;
  padding-left: 152px;
}
.appstore-screenshot {
  max-width: 300px;
  max-height: 400px;
  width: auto;
  height: auto;
  border-radius: 10px;
  background: #ddd;
  border: 1px solid #e0e0e0;
}
.appstore-description {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 16px;
}
.appstore-description h2 {
  margin-top: 0;
}
.appstore-license {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 16px;
}
.appstore-release-notes {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 16px;
}

.release-info {
  margin-bottom: 24px;
}

.release-date {
  color: #666;
  font-size: 0.9rem;
  margin: 0 0 8px 0;
}

.release-title {
  margin: 0 0 12px 0;
  font-size: 1.2rem;
  font-weight: bold;
  color: #333;
}

.release-summary {
  margin: 0;
  color: #555;
  line-height: 1.5;
  font-size: 0.95rem;
}

.appstore-contact {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 16px;
}
footer {
  text-align: center;
  color: #aaa;
  font-size: 0.95rem;
  margin-bottom: 24px;
}