:root {
  --pink: #f17db1;
  --pink-dark: #d95f97;
  --pink-light: #fff0f7;
  --black: #17171b;
  --gray: #62626b;
  --line: #e6e7ef;
  --bg: #f7f7fb;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--black);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

header {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  padding: 18px 20px;
}

.header-inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  font-weight: 800;
  font-size: 18px;
  color: var(--black);
  text-decoration: none;
}

.brand span {
  color: var(--pink);
}

nav a {
  color: var(--gray);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  margin-left: 18px;
}

nav a:hover {
  color: var(--pink);
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 20px 64px;
}

h1 {
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin: 0 0 8px;
}

h2 {
  font-size: 19px;
  margin: 34px 0 10px;
  letter-spacing: -0.2px;
}

.updated {
  color: var(--gray);
  font-size: 14px;
  margin: 0 0 28px;
}

p {
  margin: 0 0 14px;
  color: #2c2c33;
}

ul {
  margin: 0 0 14px;
  padding-left: 20px;
  color: #2c2c33;
}

li {
  margin-bottom: 6px;
}

.term {
  font-weight: 700;
  color: var(--black);
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 18px;
}

.card h2 {
  margin-top: 0;
}

.contact-mail {
  display: inline-block;
  margin-top: 6px;
  background: var(--pink);
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 12px;
}

.contact-mail:hover {
  background: var(--pink-dark);
}

.note {
  background: var(--pink-light);
  border: 1px solid #f8d9e8;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 14px;
  color: #6f5862;
}

footer {
  border-top: 1px solid var(--line);
  padding: 24px 20px 40px;
  text-align: center;
  color: var(--gray);
  font-size: 13px;
}

footer a {
  color: var(--gray);
  margin: 0 8px;
}

@media (max-width: 520px) {
  h1 { font-size: 25px; }
  nav a { margin-left: 12px; font-size: 13px; }
}