:root {
  color-scheme: light;
  --green-950: #0d3429;
  --green-800: #175a43;
  --green-700: #227653;
  --green-100: #eaf4ef;
  --ink: #17211d;
  --muted: #5f6c66;
  --line: #dbe5df;
  --white: #ffffff;
  --page: #f7faf8;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
  font-size: 16px;
}

body {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--ink);
  background: var(--page);
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
  line-height: 1.8;
}

a {
  color: var(--green-700);
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.narrow {
  width: min(820px, calc(100% - 40px));
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.98);
}

.header-inner {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: inline-flex;
  flex: 0 0 auto;
}

.logo img {
  display: block;
  width: 76px;
  height: auto;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.header-nav a {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.header-nav .header-button {
  padding: 10px 16px;
  border-radius: 6px;
  color: var(--white);
  background: var(--green-700);
}

.page-heading {
  padding: 72px 0 64px;
  background: var(--green-100);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--green-700);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

h1,
h2,
p {
  word-break: normal;
}

h1 {
  margin: 0 0 16px;
  color: var(--green-950);
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  line-height: 1.35;
}

.page-heading p:last-child {
  margin: 0;
  color: var(--muted);
}

.policy {
  padding: 64px 0 88px;
}

.policy section {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.policy h2 {
  margin: 0 0 12px;
  color: var(--green-950);
  font-size: 1.15rem;
  line-height: 1.5;
}

.policy p,
.policy ul {
  margin: 0;
  color: #34443d;
}

.policy ul {
  padding-left: 1.4em;
}

.effective-date {
  margin: 36px 0 18px;
  color: var(--muted);
  font-size: 0.9rem;
}

.back-link {
  display: inline-flex;
  font-weight: 700;
}

.site-footer {
  padding: 28px 0;
  color: rgba(255, 255, 255, 0.9);
  background: var(--green-950);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 720px) {
  body {
    font-size: 15px;
    line-height: 1.75;
  }

  .container,
  .narrow {
    width: min(100% - 28px, 820px);
  }

  .header-inner {
    min-height: 76px;
  }

  .logo img {
    width: 62px;
  }

  .header-nav {
    gap: 10px;
  }

  .header-nav > a:not(.header-button) {
    display: none;
  }

  .page-heading {
    padding: 52px 0 46px;
  }

  .policy {
    padding: 40px 0 64px;
  }

  .policy section {
    padding: 22px 0;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}