:root {
  --bg-top: #f6f0ff;
  --bg-bottom: #fff9f0;
  --text-primary: #2c2352;
  --text-secondary: #7c6e98;
  --accent: #ff8a2a;
  --card-bg: rgba(255, 255, 255, 0.94);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: linear-gradient(135deg, var(--bg-top), var(--bg-bottom));
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

header {
  padding-bottom: 16px;
  border-bottom: 2px solid var(--accent);
  margin-bottom: 28px;
}

header h1 {
  font-size: 28px;
  margin: 0 0 4px;
  font-weight: 800;
}

header .meta {
  color: var(--text-secondary);
  font-size: 14px;
}

main {
  background: var(--card-bg);
  border-radius: 24px;
  padding: 32px 28px;
  box-shadow: 0 8px 32px rgba(124, 110, 152, 0.16);
}

h2 {
  font-size: 20px;
  margin: 32px 0 12px;
  color: var(--text-primary);
}

h2:first-child { margin-top: 0; }

p, li {
  font-size: 15px;
  color: var(--text-primary);
}

ul {
  padding-left: 24px;
}

a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

a:hover { text-decoration: underline; }

footer {
  margin-top: 32px;
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
}

.lang-toggle {
  text-align: right;
  font-size: 13px;
  margin-bottom: 16px;
}

.lang-toggle a + a { margin-left: 12px; }