/* =========================================================
   株式会社天海 コーポレートサイト 共通スタイル
   ---------------------------------------------------------
   配色   白の紙面に墨の文字、ロゴの紫（#870087）を差し色に
   書体   見出し しっぽり明朝 / 本文 Zen Kaku Gothic New
   ========================================================= */

:root {
  --bg: #fbfafc;
  --ink: #26202a;
  --sub: #6f6874;
  --line: #e9e2ec;
  --plum: #870087;
  --plum-dim: #a24aa2;
  --plum-pale: #f6ecf6;
  --serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

::selection { background: var(--plum-pale); }

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 2;
  letter-spacing: 0.04em;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: no-preference) {
  body { animation: pagein 0.7s ease both; }
  @keyframes pagein {
    from { opacity: 0; }
    to { opacity: 1; }
  }
}

a { color: var(--plum); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 0.3em; }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--plum);
  outline-offset: 3px;
  border-radius: 1px;
}

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

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- ヘッダー ---------- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 32px;
  padding-top: 22px;
  padding-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 0.14em;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand img { width: 26px; height: 26px; flex: none; }

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 26px;
}

.site-nav a {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--sub);
  padding: 4px 0;
}

.site-nav a:hover { color: var(--plum); text-decoration: none; }

.site-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom: 1px solid var(--plum);
}

/* ---------- トップページ ---------- */

.hero {
  display: flex;
  align-items: stretch;
  gap: clamp(32px, 7vw, 88px);
  padding: clamp(64px, 12vh, 128px) 0 clamp(56px, 10vh, 112px);
}

.hero-mark {
  display: flex;
  align-items: center;
  border-right: 1px solid var(--line);
  padding-right: clamp(20px, 3vw, 40px);
  flex: none;
}

.hero-mark img {
  width: clamp(120px, 18vw, 220px);
  height: auto;
}

.hero-body { align-self: center; max-width: 34em; }

.eyebrow {
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--plum);
  margin-bottom: 22px;
}

.hero-body h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(24px, 3.4vw, 33px);
  line-height: 1.9;
  letter-spacing: 0.08em;
  margin-bottom: 28px;
}

.hero-body p { color: var(--sub); max-width: 32em; }

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  margin-top: 40px;
  list-style: none;
}

.hero-links a {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 0.14em;
  padding: 8px 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.hero-links a::after { content: "\3000→"; color: var(--plum-dim); }

.hero-links a:hover {
  text-decoration: none;
  border-color: var(--plum-dim);
  background: var(--plum-pale);
}

/* トップの事業一覧 */

.top-section {
  border-top: 1px solid var(--line);
  padding: clamp(48px, 8vh, 80px) 0;
}

.top-section-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 21px;
  letter-spacing: 0.16em;
  margin-bottom: 36px;
}

.top-section-title::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 38%;
  background: var(--plum);
  flex: none;
}

.top-business-list { list-style: none; max-width: 40em; }

.top-business-list li {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  font-size: 15px;
  letter-spacing: 0.08em;
}

.top-business-list li:first-child { border-top: 1px solid var(--line); }

/* ---------- 下層ページ共通 ---------- */

.page-head {
  padding: clamp(56px, 9vh, 88px) 0 36px;
  border-bottom: 1px solid var(--line);
}

.page-head h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(26px, 3.6vw, 34px);
  letter-spacing: 0.18em;
}

.page-body { padding: clamp(48px, 7vh, 72px) 0 clamp(72px, 10vh, 112px); }

.prose { max-width: 40em; }
.prose p + p { margin-top: 1.8em; }

/* ---------- 会社概要 ---------- */

.company-table { max-width: 46em; }

.company-table .row {
  display: grid;
  grid-template-columns: 10em 1fr;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
}

.company-table .row:first-child { border-top: 1px solid var(--line); }

.company-table dt {
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--sub);
  padding-top: 3px;
}

.company-table dd { font-size: 15px; letter-spacing: 0.06em; }

.company-table dd ul { list-style: none; }

.section-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 0.18em;
  margin: 72px 0 32px;
}

.section-title::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 38%;
  background: var(--plum);
  flex: none;
}

.section-title:first-child { margin-top: 0; }

/* 沿革 */

.history { list-style: none; max-width: 46em; }

.history li {
  display: grid;
  grid-template-columns: 10em 1fr;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  font-size: 15px;
}

.history li:first-child { border-top: 1px solid var(--line); }

.history .date { color: var(--sub); font-size: 13px; letter-spacing: 0.14em; padding-top: 2px; }

/* ---------- 事業内容 ---------- */

.business-list { list-style: none; max-width: 42em; }

.business-list > li {
  border-bottom: 1px solid var(--line);
  padding: 40px 0;
}

.business-list > li:first-child { padding-top: 8px; }

.business-list h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.12em;
  line-height: 1.8;
  margin-bottom: 14px;
}

.business-list p { color: var(--sub); font-size: 15px; }

/* ---------- ごあいさつ ---------- */

.profile-photo {
  max-width: 480px;
  margin: 0 0 32px;
}

.profile-photo img {
  width: 100%;
  height: auto;
  aspect-ratio: 1179 / 871;
  object-fit: cover;
  border-radius: 10px;
}

.message-sign {
  margin-top: 56px;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.12em;
  line-height: 2.2;
}

/* ---------- お知らせ ---------- */

.news-list { list-style: none; max-width: 46em; }

.news-list li {
  display: grid;
  grid-template-columns: 10em 1fr;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
  font-size: 15px;
}

.news-list li:first-child { border-top: 1px solid var(--line); }

.news-list .date { color: var(--sub); font-size: 13px; letter-spacing: 0.14em; padding-top: 2px; }

/* ---------- お問い合わせ ---------- */

.contact-table { max-width: 42em; }

.contact-table .row {
  display: grid;
  grid-template-columns: 10em 1fr;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
}

.contact-table .row:first-child { border-top: 1px solid var(--line); }

.contact-table dt { font-size: 13px; letter-spacing: 0.2em; color: var(--sub); padding-top: 3px; }
.contact-table dd { font-size: 15px; }

.contact-note { margin-top: 40px; color: var(--sub); font-size: 14px; max-width: 40em; }

.email-img {
  display: inline-block;
  height: 17px;
  width: auto;
  vertical-align: -3px;
}

/* ---------- フッター ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 56px;
}

.footer-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 0.16em;
  margin-bottom: 10px;
}

.footer-name img { width: 20px; height: 20px; flex: none; }

.footer-addr { font-size: 13px; color: var(--sub); letter-spacing: 0.08em; }

.footer-copy { font-size: 12px; color: var(--sub); margin-top: 28px; letter-spacing: 0.1em; }

/* ---------- モバイル ---------- */

@media (max-width: 640px) {
  body { font-size: 15px; }

  .hero { gap: 24px; padding-top: 48px; }
  .hero-mark { padding-right: 16px; }
  .hero-mark img { width: 96px; }

  .company-table .row,
  .contact-table .row,
  .history li,
  .news-list li {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

.footer-links { margin-top: 18px; }
.footer-links a { font-size: 12px; color: var(--sub); letter-spacing: 0.12em; }
.footer-links a:hover { color: var(--plum); }

.business-note {
  max-width: 42em;
  margin-top: 40px;
  color: var(--sub);
  font-size: 14px;
}