/* ground creation株式会社 コーポレートサイト
 * 色の単一情報源は ../../../README.md。値は tokens.css と同一。
 * 運用ルール（README §3・§7）:
 *   - 深緑地の小さな金文字は gold-300 を既定にする
 *   - gold-700 は 24px以上の文字・罫線のみ
 *   - 生成り地・白地に金色の「文字」は置かない（罫線・ロゴ・装飾まで）
 */
:root {
  /* ── tokens.css と同一 ── */
  --gc-gold-300: #DBC38C;
  --gc-gold-500: #C9B074;
  --gc-gold-700: #B59B57;
  --gc-gold-grad: linear-gradient(160deg, #DBC38C 0%, #C9B074 52%, #B59B57 100%);
  --gc-moss-800: #2E3D31;
  --gc-moss-700: #37473A;
  --gc-moss-500: #5A6E58;
  --gc-moss-200: #B4BFB0;
  --gc-sumi:     #1C1A17;
  --gc-kinari:   #F7F4EE;

  /* ── 書体（README §10 で未確定。仮に Shippori Mincho） ── */
  --font-mincho: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-gothic: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --font-en: "Cormorant Garamond", "Shippori Mincho", serif;

  --wrap: 1080px;
  --gutter: clamp(16px, 5vw, 40px);
  --section: clamp(88px, 12vw, 152px);
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--gc-moss-700);
  color: var(--gc-kinari);
  font-family: var(--font-gothic);
  font-size: 15px;
  line-height: 2;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
p { margin: 0 0 1.2em; }
h1, h2, h3 { font-family: var(--font-mincho); font-weight: 400; margin: 0; line-height: 1.6; text-wrap: balance; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: var(--gutter); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 2px solid var(--gc-gold-300); outline-offset: 3px; }
.light :focus-visible { outline-color: var(--gc-moss-700); }

/* 未確定の記入箇所。公開前にすべて消すこと */
.todo {
  background: rgba(219, 195, 140, .16);
  border-bottom: 1px dashed currentColor;
  padding: 0 .2em;
}
.light .todo { background: #EFE6CF; }

/* ── ヘッダー ─────────────────────────────── */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: var(--header-h);
  transition: background .4s, box-shadow .4s;
}
.site-header.is-scrolled { background: rgba(46, 61, 49, .94); box-shadow: 0 1px 0 rgba(180, 191, 176, .18); backdrop-filter: blur(6px); }
.site-header .wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; max-width: 1280px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 40px; height: 40px; }
.brand span { font-family: var(--font-en); font-size: 21px; letter-spacing: .08em; color: var(--gc-gold-300); line-height: 1; }
.gnav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: clamp(20px, 2.6vw, 36px); }
.gnav a {
  text-decoration: none; font-size: 13px; letter-spacing: .14em; color: var(--gc-moss-200);
  padding-block: 6px; border-bottom: 1px solid transparent; transition: color .25s, border-color .25s;
}
.gnav a:hover { color: var(--gc-gold-300); border-color: var(--gc-gold-700); }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav-toggle {
    display: grid; place-items: center; width: 44px; height: 44px; margin-right: -10px;
    background: none; border: 0; color: var(--gc-gold-300); cursor: pointer;
  }
  .nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
    content: ""; display: block; width: 22px; height: 1px; background: currentColor; position: relative; transition: transform .3s, background .3s;
  }
  .nav-toggle span::before { position: absolute; top: -7px; }
  .nav-toggle span::after { position: absolute; top: 7px; }
  .nav-open .nav-toggle span { background: transparent; }
  .nav-open .nav-toggle span::before { transform: translateY(7px) rotate(45deg); }
  .nav-open .nav-toggle span::after { transform: translateY(-7px) rotate(-45deg); }
  .gnav {
    position: fixed; inset: var(--header-h) 0 0 0; background: var(--gc-moss-800);
    display: grid; place-items: center; opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s;
  }
  .nav-open .gnav { opacity: 1; visibility: visible; }
  .nav-open .site-header { background: var(--gc-moss-800); }
  .gnav ul { flex-direction: column; align-items: center; gap: 28px; }
  .gnav a { font-family: var(--font-mincho); font-size: 18px; color: var(--gc-gold-300); }
}

/* ── ヒーロー ─────────────────────────────── */
.hero {
  min-height: min(100svh, 1000px); display: grid; place-items: center; text-align: center;
  padding: calc(var(--header-h) + 40px) var(--gutter) 96px;
  background:
    radial-gradient(ellipse 60% 50% at 50% 42%, rgba(219, 195, 140, .10), transparent 70%),
    linear-gradient(180deg, var(--gc-moss-800) 0%, var(--gc-moss-700) 55%);
  position: relative;
}
.hero-logo { width: min(340px, 68vw); margin: 0 auto 44px; animation: rise 1.6s cubic-bezier(.2, .7, .2, 1) both; }
.hero-en {
  font-family: var(--font-en); font-size: clamp(30px, 5.4vw, 52px); letter-spacing: .12em; line-height: 1.2;
  color: var(--gc-gold-700); /* 24px以上なので濃金可 */
  background: var(--gc-gold-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  margin: 0 0 18px; animation: rise 1.6s .2s cubic-bezier(.2, .7, .2, 1) both;
}
.hero-catch {
  font-size: clamp(17px, 2.4vw, 22px); letter-spacing: .3em; color: var(--gc-gold-300);
  animation: rise 1.6s .4s cubic-bezier(.2, .7, .2, 1) both;
}
.hero-sub { margin: 14px 0 0; font-size: 13px; letter-spacing: .2em; color: var(--gc-moss-200); animation: rise 1.6s .55s cubic-bezier(.2, .7, .2, 1) both; }
.scroll-cue {
  position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%);
  font-family: var(--font-en); font-size: 12px; letter-spacing: .3em; color: var(--gc-moss-200); text-decoration: none;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.scroll-cue::after { content: ""; width: 1px; height: 44px; background: linear-gradient(var(--gc-gold-700), transparent); animation: cue 2.4s infinite; transform-origin: top; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes cue { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* ── セクション共通 ───────────────────────── */
.section { padding-block: var(--section); }
.section-head { margin-bottom: clamp(44px, 6vw, 72px); }
.section-head .en {
  display: block; font-family: var(--font-en); font-size: clamp(34px, 5vw, 48px); letter-spacing: .08em; line-height: 1.1;
  color: var(--gc-gold-700); /* 大きな文字のみ */
}
.section-head h2 { font-size: 15px; letter-spacing: .24em; margin-top: 12px; color: var(--gc-moss-200); font-family: var(--font-gothic); }
.section-head::after { content: ""; display: block; width: 48px; height: 1px; margin-top: 24px; background: var(--gc-gold-grad); }
.section-head.center { text-align: center; }
.section-head.center::after { margin-inline: auto; }

/* 明るい面：金は罫線・装飾のみ。文字は墨／深緑 */
.light { background: var(--gc-kinari); color: var(--gc-sumi); }
.light .section-head .en { color: var(--gc-moss-700); }
.light .section-head h2 { color: var(--gc-moss-500); }

/* ── 理念 ───────────────────────────────── */
.philosophy { text-align: center; }
.philosophy .lead {
  font-family: var(--font-mincho); font-size: clamp(22px, 3.4vw, 32px); line-height: 1.9; letter-spacing: .14em;
  color: var(--gc-moss-700); margin: 0 0 40px;
}
.philosophy .body { max-width: 34em; margin: 0 auto; font-size: 15px; line-height: 2.3; }
.ornament { width: 72px; margin: 0 auto 36px; opacity: .9; }

/* ── 代表メッセージ ─────────────────────── */
.message-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(36px, 6vw, 88px); align-items: start; }
.portrait {
  aspect-ratio: 4 / 5; background: var(--gc-moss-800); border: 1px solid rgba(181, 155, 87, .45);
  display: grid; place-items: center; color: var(--gc-moss-200); font-size: 12px; letter-spacing: .2em; position: relative;
}
.portrait::before { content: ""; position: absolute; inset: 10px; border: 1px solid rgba(181, 155, 87, .25); }
.message h3 { font-size: clamp(20px, 2.8vw, 26px); color: var(--gc-gold-300); line-height: 1.8; margin-bottom: 28px; }
.message p { color: var(--gc-kinari); }
.signature { margin-top: 36px; color: var(--gc-moss-200); font-size: 13px; letter-spacing: .12em; }
.signature strong { display: block; font-family: var(--font-mincho); font-weight: 400; font-size: 22px; letter-spacing: .24em; color: var(--gc-gold-300); margin-top: 4px; }

/* ── 事業 ───────────────────────────────── */
.biz-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 1px; padding: 1px; }
.biz {
  background: var(--gc-kinari); padding: 40px 32px 36px; display: flex; flex-direction: column; position: relative;
  box-shadow: 0 0 0 1px rgba(90, 110, 88, .35); text-decoration: none; color: inherit; transition: background .3s;
}
.biz::before { content: ""; position: absolute; left: 32px; top: 0; width: 32px; height: 2px; background: var(--gc-gold-grad); }
.biz .no { font-family: var(--font-en); font-size: 14px; letter-spacing: .2em; color: var(--gc-moss-500); }
.biz h3 { font-size: 22px; color: var(--gc-moss-700); margin: 6px 0 2px; letter-spacing: .06em; }
.biz .kind { font-size: 12px; letter-spacing: .16em; color: var(--gc-moss-500); margin-bottom: 18px; }
.biz p { font-size: 14px; line-height: 2; color: #3A3630; flex: 1; }
.biz .more {
  align-self: flex-start; margin-top: 8px; font-size: 13px; letter-spacing: .12em; color: var(--gc-moss-700);
  text-decoration: none; border-bottom: 1px solid var(--gc-moss-500); padding-bottom: 2px;
}
.biz .more:hover { border-color: var(--gc-moss-700); }
.biz .more[aria-disabled="true"] { color: var(--gc-moss-500); border-bottom-style: dashed; pointer-events: none; }
a.biz:hover { background: #FFFDF8; }

/* ── 実績（沿革）──────────────────────── */
.history { list-style: none; margin: 0; padding: 0; border-top: 1px solid rgba(180, 191, 176, .25); }
.history li { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid rgba(180, 191, 176, .25); }
.history .year { font-family: var(--font-en); font-size: 26px; line-height: 1.3; color: var(--gc-gold-700); letter-spacing: .06em; }
.history ul { margin: 0; padding: 0; list-style: none; }
.history ul li { display: block; border: 0; padding: 0 0 0 1.1em; position: relative; font-size: 14px; color: var(--gc-kinari); }
.history ul li::before { content: ""; position: absolute; left: 0; top: .95em; width: 6px; height: 1px; background: var(--gc-gold-500); }

/* ── 会社概要 ───────────────────────────── */
.profile { width: 100%; border-collapse: collapse; font-size: 15px; }
.profile th, .profile td { text-align: left; vertical-align: top; padding: 22px 0; border-bottom: 1px solid #D8D2C4; }
.profile tr:first-child th, .profile tr:first-child td { border-top: 1px solid var(--gc-moss-500); }
.profile th { width: 200px; font-weight: 500; letter-spacing: .16em; color: var(--gc-moss-700); padding-right: 24px; }
.profile td ul { margin: 0; padding-left: 1.2em; }

/* ── お問い合わせ ─────────────────────── */
.contact .intro { text-align: center; color: var(--gc-moss-200); margin-bottom: 48px; }
.form { max-width: 680px; margin: 0 auto; display: grid; gap: 26px; }
.field label { display: block; font-size: 13px; letter-spacing: .14em; color: var(--gc-gold-300); margin-bottom: 8px; }
.field .req { font-size: 11px; color: var(--gc-moss-200); margin-left: 8px; letter-spacing: .1em; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--gc-kinari); background: var(--gc-moss-800);
  border: 1px solid rgba(180, 191, 176, .35); border-radius: 0; padding: 13px 14px; transition: border-color .25s;
}
.field textarea { min-height: 200px; resize: vertical; line-height: 1.8; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--gc-gold-300); }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, #DBC38C 50%), linear-gradient(135deg, #DBC38C 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
.hp { position: absolute; left: -9999px; }
.agree { font-size: 13px; color: var(--gc-moss-200); text-align: center; }
.agree a { color: var(--gc-gold-300); }
.btn {
  justify-self: center; min-width: 260px; padding: 18px 32px; font: inherit; font-size: 15px; letter-spacing: .3em;
  background: transparent; color: var(--gc-gold-300); border: 1px solid var(--gc-gold-500); cursor: pointer;
  transition: background .3s, color .3s;
}
.btn:hover { background: var(--gc-gold-500); color: var(--gc-sumi); }
.contact .note { text-align: center; font-size: 12px; color: var(--gc-moss-200); margin-top: 28px; }

/* ── フッター ───────────────────────────── */
.site-footer { background: var(--gc-moss-800); padding-block: 72px 40px; text-align: center; border-top: 1px solid rgba(181, 155, 87, .35); }
.site-footer .logo { width: 88px; margin: 0 auto 18px; }
.site-footer .name { font-family: var(--font-mincho); font-size: 16px; letter-spacing: .2em; color: var(--gc-gold-300); margin-bottom: 28px; }
.fnav ul { list-style: none; padding: 0; margin: 0 0 20px; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 28px; }
.fnav a { font-size: 12px; letter-spacing: .14em; color: var(--gc-moss-200); text-decoration: none; }
.fnav a:hover { color: var(--gc-gold-300); }
.copy { font-size: 11px; letter-spacing: .14em; color: var(--gc-moss-200); margin: 36px 0 0; }

/* ── 下層ページ ───────────────────────── */
.page-head { padding: calc(var(--header-h) + 72px) 0 64px; text-align: center; background: var(--gc-moss-800); }
.page-head h1 { font-size: clamp(22px, 3vw, 28px); color: var(--gc-gold-300); letter-spacing: .2em; }
.page-head .en { display: block; font-family: var(--font-en); font-size: 13px; letter-spacing: .3em; color: var(--gc-moss-200); margin-top: 8px; }
.doc { max-width: 760px; margin: 0 auto; }
.doc h2 { font-size: 19px; color: var(--gc-moss-700); margin: 48px 0 14px; padding-bottom: 10px; border-bottom: 1px solid var(--gc-gold-700); }
.doc ul { padding-left: 1.3em; }
.center-block { text-align: center; }
.center-block .btn { display: inline-block; text-decoration: none; margin-top: 32px; }

/* ── スクロール出現 ───────────────────── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 1.1s cubic-bezier(.2, .7, .2, 1), transform 1.1s cubic-bezier(.2, .7, .2, 1); }
.reveal.is-in { opacity: 1; transform: none; }

@media (max-width: 760px) {
  body { font-size: 14.5px; }
  .philosophy .lead { font-size: 19px; letter-spacing: .08em; }
  .message-grid { grid-template-columns: 1fr; }
  .portrait { max-width: 320px; }
  .history li { grid-template-columns: 1fr; gap: 6px; }
  .profile th, .profile td { display: block; width: auto; }
  .profile th { padding: 18px 0 2px; border-bottom: 0; }
  .profile td { padding: 0 0 18px; }
  .profile tr:first-child td { border-top: 0; }
  .biz { padding: 36px 24px 30px; }
  .biz::before { left: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}