@charset "utf-8";

/* ------------------------------
  reset
------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
}

body {
  margin: 0;
  color: #333;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Yu Gothic", "YuGothic", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-size: 1.6rem;
  line-height: 1.8;
  letter-spacing: 0.04em;
  background: #f7faf7;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
}

/* ------------------------------
  layout
------------------------------ */
.inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ------------------------------
  header
------------------------------ */
.header {
  padding: 28px 0;
  background: #fff;
  border-bottom: 1px solid #e5e8e5;
}

.site_logo {
  margin: 0;
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.4;
}

.site_logo a {
  text-decoration: none;
}

/* ------------------------------
  privacy page
------------------------------ */
.privacy_page {
  padding: 70px 0 80px;
}

.privacy_box {
  padding: 48px;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.privacy_page h2 {
  margin: 0 0 1.5em;
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1.4;
}

.privacy_page h3 {
  margin: 2.2em 0 0.7em;
  padding-left: 0.8em;
  font-size: clamp(1.8rem, 3vw, 2.1rem);
  line-height: 1.5;
  border-left: 4px solid #2f8f5b;
}

.privacy_page p {
  margin: 0 0 1.2em;
}

.privacy_date {
  margin-top: 3em;
}

.back_link {
  margin-top: 2.5em;
}

.back_link a {
  color: #2f8f5b;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

/* ------------------------------
  footer
------------------------------ */
.footer {
  padding: 30px 0;
  text-align: center;
  background: #fff;
  border-top: 1px solid #e5e8e5;
}

.footer_links {
  display: flex;
  justify-content: center;
  gap: 1.5em;
  margin: 0 0 1em;
  padding: 0;
  list-style: none;
}

.footer_links a {
  color: #2f8f5b;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.footer small {
  font-size: 1.3rem;
}

/* ------------------------------
  smartphone
------------------------------ */
@media screen and (max-width: 767px) {
  body {
    font-size: 1.5rem;
  }

  .inner {
    padding: 0 16px;
  }

  .header {
    padding: 22px 0;
  }

  .privacy_page {
    padding: 40px 0 50px;
  }

  .privacy_box {
    padding: 28px 20px;
    border-radius: 14px;
  }

  .privacy_page h2 {
    margin-bottom: 1.2em;
  }

  .privacy_page h3 {
    margin-top: 2em;
    font-size: 1.7rem;
  }

  .footer_links {
    flex-direction: column;
    gap: 0.4em;
  }
}