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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: #1a1a2e;
  background: #f5f5f7;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 2px solid #e0e0e8;
}

header h1 {
  font-size: 28px;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 8px;
}

header .app-name {
  font-size: 14px;
  color: #6b6b8a;
}

header .updated {
  font-size: 14px;
  color: #6b6b8a;
  margin-top: 4px;
}

section {
  background: #ffffff;
  border-radius: 12px;
  padding: 28px 32px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

h2 {
  font-size: 18px;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 4px solid #5b5bde;
}

h3 {
  font-size: 15px;
  font-weight: 700;
  color: #3a3a5c;
  margin: 20px 0 8px;
}

p {
  color: #3a3a5c;
  margin-bottom: 12px;
}

p:last-child {
  margin-bottom: 0;
}

ul {
  padding-left: 20px;
  color: #3a3a5c;
  margin-bottom: 12px;
}

ul li {
  margin-bottom: 6px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

th {
  background: #f0f0f8;
  color: #1a1a2e;
  font-weight: 700;
  text-align: left;
  padding: 10px 14px;
  border: 1px solid #e0e0e8;
}

td {
  padding: 10px 14px;
  border: 1px solid #e0e0e8;
  color: #3a3a5c;
  vertical-align: top;
}

tr:nth-child(even) td {
  background: #fafafc;
}

a {
  color: #5b5bde;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.contact-box {
  background: #f0f0f8;
  border-radius: 8px;
  padding: 16px 20px;
  margin-top: 12px;
}

.contact-box p {
  margin: 0;
}

footer {
  text-align: center;
  font-size: 13px;
  color: #9090a8;
  margin-top: 40px;
}