/* 蟹田特許事務所 — 墨の背と、生成りの紙 */
:root {
  --ground: #dcdedd;
  --paper: #faf9f6;
  --ink: #1b1e21;
  --ink-soft: #6b7075;
  --rule: #d3d5d2;
  --spine: #1f3a5f;      /* 紺青 */
  --spine-text: #f3f1ec;
  --mincho: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", "Noto Serif CJK JP", "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--mincho);
  font-size: 16px;
  line-height: 1.9;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; border-bottom: 1px solid var(--ink-soft); }
a:hover, a:focus-visible { border-bottom-color: var(--ink); outline: none; }

/* 1枚 */
.card {
  max-width: 1040px;
  margin: 56px auto;
  background: var(--paper);
  display: grid;
  grid-template-columns: 290px 1fr;
  grid-template-rows: auto auto;
  box-shadow: 0 24px 60px -30px rgba(10, 12, 14, .45);
}

/* 背：上に日本語の縦書き、下に英名を横書き3行（スマホと同じ組み方） */
.spine {
  grid-row: 1 / 3;
  background: var(--spine);
  color: var(--spine-text);
  padding: 56px 28px 44px;
  display: flex;
  flex-direction: column;
}
.names { display: contents; }
.spine-title {
  margin: 0 0 0 auto;           /* 右に寄せる */
  writing-mode: vertical-rl;
  font-size: 2.9rem;
  font-weight: 500;
  letter-spacing: .36em;
  line-height: 1;
}
.spine-sub {
  margin: auto 0 0;             /* 下に押し下げる */
  padding-top: 48px;
  width: min-content;
  font-size: 2.45rem;
  line-height: 1.18;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .9;
}
.lang {
  margin-top: 18px;
  display: flex;
  gap: 18px;
  font-size: .84rem;
  letter-spacing: .06em;
}
.lang a { border-bottom: 1px solid rgba(243, 241, 236, .35); padding-bottom: 2px; }
.lang a:hover, .lang a:focus-visible { border-bottom-color: var(--spine-text); }

/* 本文 */
.body { padding: 64px 72px 24px 64px; }
.body section + section {
  margin-top: 44px;
  padding-top: 44px;
  border-top: 1px solid var(--rule);
}
h1 {
  margin: 0 0 24px;
  font-size: 1.7rem;
  font-weight: 500;
  letter-spacing: .1em;
  line-height: 1.35;
}
#en h1 { letter-spacing: .01em; }

dl {
  margin: 0;
  display: grid;
  grid-template-columns: 6.5em 1fr;
  column-gap: 24px;
  row-gap: 8px;
  max-width: 40em;
}
#en dl { grid-template-columns: 8.5em 1fr; max-width: 44em; }
dt { color: var(--ink-soft); font-size: .9rem; padding-top: .12em; letter-spacing: .04em; }
dd { margin: 0; }
.yr { display: inline-block; width: 3.4em; color: var(--ink-soft); font-variant-numeric: tabular-nums; }

dl + dl.contact { margin-top: 28px; }

/* 地図 */
.map { grid-column: 2; padding: 16px 72px 64px 64px; }
.map iframe { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; filter: grayscale(1) contrast(1.05); }
.map iframe:hover { filter: none; }

/* スマホ：紺の帯の右に縦書き、左下に英名 */
@media (max-width: 720px) {
  body { font-size: 15px; }
  .card { margin: 0; grid-template-columns: 1fr; box-shadow: none; }
  .spine {
    grid-row: auto;
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-rows: 1fr auto;
    align-items: end;
    min-height: 360px;
    padding: 28px 24px 22px;
  }
  .spine-title {
    grid-column: 2; grid-row: 1 / 3;
    align-self: start;
    margin: 0;
    font-size: 2.5rem;
    letter-spacing: .3em;
  }
  .spine-sub {
    grid-column: 1; grid-row: 1;
    align-self: end;
    margin: 0 0 16px;
    padding-top: 0;
    width: min-content;
    font-size: 2.25rem;
    line-height: 1.18;
    letter-spacing: .1em;
  }
  .lang { grid-column: 1; grid-row: 2; margin: 0; padding: 0; }
  .body { padding: 36px 24px 8px; }
  .body section + section { margin-top: 32px; padding-top: 32px; }
  h1 { font-size: 1.4rem; margin-bottom: 18px; }
  dl, #en dl { grid-template-columns: 1fr; row-gap: 0; max-width: none; }
  dt { padding-top: 0; }
  dd { margin-bottom: 12px; }
  .yr { width: 3.2em; }
  .map { grid-column: 1; padding: 12px 0 0; }
  .map iframe { aspect-ratio: 4 / 3; }
}