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

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: #ffffff;
  color: #1a1a1a;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { 
  color: inherit; 
  text-decoration: none;
}

.header {
  padding: 20px 28px;
  border-bottom: 1px solid #e5e5e5;
  display: flex;
  align-items: center;
  gap: 36px;
}

.header .logo {
  font-weight: 600;
  font-size: 16px;
  color: #1a1a1a;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.header .logo img {
  height: 40px;
  display: block;
}

.header nav {
  display: flex;
  gap: 24px;
}

.header nav a {
  font-size: 14px;
  color: #71717a;
  transition: color 0.15s;
}

.header nav a:hover {
  color: #1a1a1a;
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 80px 24px;
  flex: 1;
}

h1 {
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: #1a1a1a;
  margin-bottom: 24px;
}

.content {
  font-size: 16px;
  line-height: 1.7;
  color: #52525b;
}

.content p {
  margin-bottom: 20px;
}

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

.content h2 {
  font-size: 24px;
  font-weight: 600;
  color: #1a1a1a;
  margin-top: 32px;
  margin-bottom: 16px;
}

.content h2:first-of-type {
  margin-top: 0;
}

.content em {
  font-style: italic;
  color: #1a1a1a;
}

.top-right-btn {
  margin-left: auto; 
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
}

.back-button {
  margin-top: 32px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid #e5e5e5;
  background: #f5f5f5;
  color: #1a1a1a;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.back-button:hover {
  background: #ececec;
  border-color: #d4d4d4;
}