:root {
  --ink: #1B2A33;
  --ink-soft: #4A5A63;
  --paper: #FFFFFF;
  --mist: #EEF3F2;
  --line: #CFDAD8;
  --accent: #1F6F62;
  --accent-deep: #14504A;
  --serif: "Shippori Mincho B1", "Hiragino Mincho ProN", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.wrap.narrow { max-width: 760px; }
.sp { display: none; }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.logo { font-family: var(--serif); font-weight: 800; font-size: 22px; color: var(--ink); text-decoration: none; letter-spacing: 0.04em; }
.site-header nav { display: flex; gap: 20px; font-size: 14px; }
.site-header nav a { color: var(--ink-soft); text-decoration: none; }
.site-header nav a:hover { color: var(--accent); }

/* hero */
.hero { background: var(--mist); padding: 96px 0 88px; }
.hero-lead { margin: 0 0 32px; color: var(--ink-soft); font-size: 15px; max-width: 36em; }
.hero-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(44px, 9vw, 104px);
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--ink);
}
.hero-vision {
  margin: 40px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
  font-size: 17px;
  font-weight: 500;
}

/* sections */
.section { padding: 88px 0; }
.section.alt { background: var(--mist); }
h2 {
  margin: 0 0 40px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: 30px;
  line-height: 1.4;
  letter-spacing: 0.06em;
}
h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; line-height: 1.6; }
p { margin: 0 0 1.2em; }
.intro { font-size: 17px; max-width: 40em; margin-bottom: 48px; }

/* business */
.two-col { display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px; }
.brand { font-family: var(--serif); font-size: 28px; font-weight: 800; margin-bottom: 0; }
.sub { color: var(--ink-soft); font-size: 14px; margin-bottom: 24px; }
.promise { font-family: var(--serif); font-weight: 600; font-size: 19px; color: var(--accent-deep); margin-top: 32px; }
.sites { list-style: none; margin: 0 0 32px; padding: 0; }
.sites li { padding: 20px 0; border-top: 1px solid var(--line); }
.sites li:last-child { border-bottom: 1px solid var(--line); }
.sites p { margin: 0; font-size: 15px; }
.site-name { font-weight: 700; font-size: 17px !important; }
.site-meta { color: var(--ink-soft); font-size: 13px !important; margin-bottom: 6px !important; }
.figure { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 6px; margin-bottom: 24px; }
.figure .num { font-family: var(--serif); font-weight: 800; font-size: 48px; line-height: 1; color: var(--accent-deep); }
.figure .unit { font-weight: 700; }
.figure .label { width: 100%; font-size: 13px; color: var(--ink-soft); }
.text-link { font-weight: 700; text-underline-offset: 4px; }

/* operation */
.points { display: grid; grid-template-columns: 1fr 1fr; gap: 40px 56px; }
.points article { border-top: 2px solid var(--ink); padding-top: 20px; }
.points p { font-size: 15px; margin: 0; }

/* message */
.sign { text-align: right; font-weight: 500; margin-top: 32px; }
.profile { margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--line); }
.profile ul { margin: 0; padding-left: 1.2em; font-size: 15px; }
.profile li { margin-bottom: 6px; }

/* news */
.news { list-style: none; margin: 0; padding: 0; }
.news li { display: grid; grid-template-columns: 150px 1fr; gap: 16px; padding: 20px 0; border-top: 1px solid var(--line); }
.news li:last-child { border-bottom: 1px solid var(--line); }
.news time { color: var(--ink-soft); font-size: 14px; }
.news p { margin: 0; font-size: 15px; }

/* tables */
.table { display: grid; grid-template-columns: 120px 1fr; margin: 0; }
.table dt, .table dd { margin: 0; padding: 16px 0; border-top: 1px solid var(--line); font-size: 15px; }
.table dt { font-weight: 700; color: var(--ink-soft); }
.table dt:last-of-type, .table dd:last-of-type { border-bottom: 1px solid var(--line); }
.history-title { margin-top: 56px; margin-bottom: 16px; }
.history { list-style: none; margin: 0; padding: 0; }
.history li { display: grid; grid-template-columns: 120px 1fr; padding: 10px 0; font-size: 15px; }
.history time { color: var(--ink-soft); }

/* contact */
.contact { background: var(--ink); color: #FFFFFF; }
.contact h2 { color: #FFFFFF; }
.contact .table dt { color: #B9C7CB; }
.contact .table dt, .contact .table dd { border-color: #3A4B55; }
.contact a { color: #FFFFFF; }

/* footer */
.site-footer { background: #10191F; color: #B9C7CB; font-size: 13px; padding: 32px 0; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 8px 32px; align-items: center; }
.footer-inner p { margin: 0; }
.footer-name { color: #FFFFFF; font-weight: 700; }
.site-footer a { color: #B9C7CB; }
.copy { margin-left: auto !important; }

/* privacy page */
.page { padding: 72px 0 96px; }
.page h1 { font-family: var(--serif); font-weight: 800; font-size: 30px; margin: 0 0 40px; }
.page h2 { font-family: var(--sans); font-size: 18px; letter-spacing: 0.02em; margin: 40px 0 12px; }
.page p, .page li { font-size: 15px; }

@media (max-width: 760px) {
  .sp { display: inline; }
  .site-header nav { display: none; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 64px 0; }
  h2 { font-size: 24px; margin-bottom: 28px; }
  .two-col, .points { grid-template-columns: 1fr; gap: 40px; }
  .news li { grid-template-columns: 1fr; gap: 4px; }
  .table { grid-template-columns: 88px 1fr; }
  .history li { grid-template-columns: 100px 1fr; }
  .copy { margin-left: 0 !important; }
}

/* 代表メッセージ追記（公開時に使用） */
.message-add { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--line); }
.cert { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.cert img { width: 120px; height: auto; display: block; }