/* 全体の基本設定：色・書体・リンク */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
  color-scheme: light;
}

body {
  margin: 0;
  color: #151515;
  background: #fff;
  font: 1rem/1.7 Arial, "Helvetica Neue", "Hiragino Kaku Gothic ProN", sans-serif;
}

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

a:hover {
  text-decoration: underline;
  text-underline-offset: .25em;
}

a:focus-visible, summary:focus-visible {
  outline: 2px solid #151515;
  outline-offset: 5px;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

h1, h2, p {
  margin: 0;
}

h2 {
  font-size: .875rem;
  font-weight: 400;
  color: #5c5c5c;
  margin-bottom: 1.5rem;
}

p + p {
  margin-top: 1rem;
}

/* ページの幅と左右の余白 */
.page {
  width: min(100% - 4rem, 820px);
  margin: auto;
}

/* ヘッダー・ロゴ・メニュー */
header {
  padding: 5rem 0 3.5rem;
}

h1 {
  width: min(100%, 420px);
  line-height: 1;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  margin-top: 1.8rem;
  font-size: .875rem;
}

/* 展示一覧 */
section {
  scroll-margin-top: 2rem;
}

.entry {
  padding: 1.5rem 0 2rem;
  border-top: 1px solid #dedede;
}

.entry:last-child {
  border-bottom: 1px solid #dedede;
  padding-bottom: 1.5rem;
}

.entry-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: .5rem 2rem;
}

.entry-heading h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.5;
}

.entry-date {
  margin: 0;
  font-size: .875rem;
  color: #5c5c5c;
  white-space: nowrap;
}

.entry-image {
  display: block;
  margin-top: 1.25rem;
}

/* 開廊のお知らせとPDF画像 */
.notice-pages {
  margin-top: .8rem;
}

.notice-pages summary {
  cursor: pointer;
  font-size: .875rem;
  color: #5c5c5c;
  width: fit-content;
  padding: .35rem 0;
}

.pdf-pages {
  margin-top: 1rem;
}

.pdf-pages img + img {
  margin-top: 1rem;
}

.pdf-pages img {
  border: 1px solid #ededed;
}

/* 紹介文 */
#about {
  padding: 5rem 0;
  max-width: 36rem;
}

/* 連絡先とフッター */
footer {
  border-top: 1px solid #dedede;
  padding: 2rem 0 3rem;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  font-size: .875rem;
}

footer h2 {
  margin-bottom: .5rem;
}

footer a {
  display: block;
  overflow-wrap: anywhere;
}

.press {
  margin-top: .3rem;
  color: #5c5c5c;
}

footer > p {
  color: #5c5c5c;
}

/* キーボード操作用の案内 */
.skip {
  position: fixed;
  top: -6rem;
  left: 1rem;
  padding: .5rem 1rem;
  background: #fff;
  z-index: 5;
}

.skip:focus {
  top: 1rem;
}

/* スマートフォン用：画面幅600px以下 */
@media (max-width: 600px) {
  .page {
    width: calc(100% - 2.5rem);
  }

  header {
    padding: 3rem 0;
  }

  h1 {
    width: min(100%, 340px);
  }

  .entry-heading {
    flex-direction: column;
    gap: .25rem;
  }

  .entry {
    padding: 1.25rem 0 1.75rem;
  }

  #about {
    padding: 3.5rem 0;
  }

  footer {
    flex-direction: column;
    gap: 1.5rem;
  }

}

/* 動きを減らす設定への対応 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

}