*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #fafaf8;
  --surface: #fff;
  --text: #1a1a1a;
  --text-dim: #666;
  --border: #e8e4e0;
  --accent: #bf4e3a;
  --accent-hover: #a33d2b;
  --tag-bg: #fef3f0;
  --tag-text: #bf4e3a;
}
body {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

header {
  padding: 80px 24px 64px;
  max-width: 640px;
  margin: 0 auto;
}
header h1 { font-size: 32px; font-weight: 700; letter-spacing: 0.02em; }
header .sub { margin-top: 16px; color: var(--text-dim); font-size: 15px; line-height: 1.7; }

main { max-width: 640px; margin: 0 auto; padding: 0 24px 80px; }

section { margin-bottom: 64px; }
section h2 { font-size: 13px; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 24px; }

.app-item { background: var(--surface); border: 1px solid var(--border); padding: 28px; margin-bottom: 16px; }
.app-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.app-item h3 .tag { display: inline-block; font-size: 10px; font-weight: 600; background: var(--tag-bg); color: var(--tag-text); padding: 2px 8px; margin-left: 8px; vertical-align: middle; letter-spacing: 0.04em; }
.app-item .desc { color: var(--text-dim); font-size: 14px; margin-top: 8px; }
.app-item .links { display: flex; flex-wrap: wrap; gap: 12px 18px; margin-top: 16px; }
.app-item .links a { font-size: 13px; color: var(--accent); text-decoration: none; font-weight: 500; }
.app-item .links a:hover { color: var(--accent-hover); }

.contact { border-top: 1px solid var(--border); padding-top: 32px; }
.contact p { font-size: 14px; color: var(--text-dim); }
.contact a { color: var(--accent); text-decoration: none; }

footer { text-align: center; padding: 32px 24px; font-size: 12px; color: #999; border-top: 1px solid var(--border); }

.privacy { max-width: 680px; margin: 0 auto; padding: 64px 24px 80px; }
.privacy a.back { font-size: 13px; color: var(--accent); text-decoration: none; }
.privacy h1 { font-size: 28px; margin: 24px 0 32px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.privacy h2 { font-size: 18px; margin: 32px 0 12px; }
.privacy h3 { font-size: 15px; margin: 20px 0 8px; }
.privacy p, .privacy li { font-size: 14px; color: var(--text-dim); margin-bottom: 8px; }
.privacy ul { padding-left: 20px; margin-bottom: 16px; }
.privacy code { font-size: 12px; background: #f3f2f0; padding: 1px 4px; }
.privacy a { color: var(--accent); }

@media (max-width: 480px) {
  header { padding: 48px 20px 40px; }
  header h1 { font-size: 26px; }
  main { padding: 0 20px 64px; }
}