/* =====================================================
   豊 YUTAKA Corporate Site — グローバルスタイル
   配色: 深緑#1F3A3D × 和紙#F4EFE4 × 稲穂金#C9A227
   ===================================================== */
:root {
  --green:      #1F3A3D;
  --green-mid:  #2C5055;
  --washi:      #F4EFE4;
  --washi-deep: #E8E0CF;
  --gold:       #C9A227;
  --ink:        #3A3730;
  --ink-soft:   #6B6560;
  --line:       #D4C9B0;
  /* CEO指示 2026-07: 全文字ヒラギノ明朝に統一（Mac/iOS。無い環境は游明朝→Shippori Minchoで明朝を維持） */
  --serif:      "Hiragino Mincho ProN", "Hiragino Mincho Pro", "游明朝", "Yu Mincho", YuMincho, "Shippori Mincho", serif;
  --sans:       "Hiragino Mincho ProN", "Hiragino Mincho Pro", "游明朝", "Yu Mincho", YuMincho, "Shippori Mincho", serif;
  --eng:        "Hiragino Mincho ProN", "Hiragino Mincho Pro", "游明朝", "Yu Mincho", YuMincho, "Shippori Mincho", serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--sans);
  font-weight: 300;
  color: var(--ink);
  background: var(--washi);
  line-height: 1.9;
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.5; letter-spacing: .1em; }

/* ── レイアウト ── */
.inner { max-width: 1080px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 60px); }
section { padding: clamp(80px, 12vw, 160px) 0; }

/* ── スクロールフェードイン ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1s ease, transform 1s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ── ヘッダー ── */
#header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px clamp(20px, 5vw, 56px);
  transition: background .4s, padding .4s, box-shadow .4s;
}
#header.scrolled {
  background: rgba(244,239,228,.95);
  backdrop-filter: blur(10px);
  padding-top: 14px; padding-bottom: 14px;
  box-shadow: 0 1px 0 var(--line);
}
.logo { display: flex; align-items: baseline; gap: 10px; }
.logo-mark { font-family: var(--serif); font-size: 28px; color: var(--gold); line-height: 1; }
.logo-name { font-family: var(--serif); font-size: 15px; letter-spacing: .2em; color: var(--washi); transition: color .4s; }
#header.scrolled .logo-name { color: var(--green); }
nav { display: flex; gap: clamp(16px, 2.5vw, 36px); }
.nav-link {
  font-size: 13px; letter-spacing: .14em;
  color: rgba(244,239,228,.85); transition: color .4s, opacity .3s;
}
#header.scrolled .nav-link { color: var(--ink); }
.nav-link:hover { opacity: .6; }
@media (max-width: 700px) { nav { display: none; } }

/* ── セクション共通見出し ── */
.sec-en {
  font-family: var(--eng); font-size: 12px; letter-spacing: .4em;
  text-transform: uppercase; color: var(--gold);
}
.sec-title {
  font-size: clamp(22px, 3vw, 32px); color: var(--green);
  margin-top: 12px;
}
.sec-head { margin-bottom: clamp(40px, 6vw, 72px); }

/* ── 縦書きユーティリティ ── */
.tate {
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

/* ── フッター（全ページ共通） ── */
.site-footer {
  background: var(--green);
  color: rgba(244,239,228,.7);
  padding: clamp(56px,8vw,96px) 0 clamp(32px,4vw,48px);
  border-top: 1px solid rgba(244,239,228,.1);
}
.site-footer .sf-inner {
  max-width: 1080px; margin: 0 auto;
  padding: 0 clamp(24px,5vw,60px);
  display: grid; grid-template-columns: 1.1fr .9fr;
  gap: clamp(40px,6vw,80px);
}
@media (max-width: 760px) { .site-footer .sf-inner { grid-template-columns: 1fr; gap: 48px; } }

.sf-logo { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
.sf-mark {
  font-family: var(--serif); font-size: 40px; color: var(--gold);
  line-height: 1; width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(201,162,39,.5); border-radius: 50%;
}
.sf-names { display: flex; flex-direction: column; gap: 4px; }
.sf-names .sf-en { font-family: var(--eng); font-size: clamp(20px,2.4vw,26px); letter-spacing: .12em; color: var(--washi); text-transform: uppercase; line-height: 1.1; }
.sf-names .sf-jp { font-family: var(--serif); font-size: 13px; letter-spacing: .14em; color: rgba(244,239,228,.7); }

.sf-addr { margin-bottom: 32px; }
.sf-addr p { font-size: 13px; line-height: 2; letter-spacing: .04em; color: rgba(244,239,228,.78); }
.sf-addr .sf-addr-en { font-family: var(--eng); font-size: 12px; letter-spacing: .04em; color: rgba(244,239,228,.5); margin-top: 8px; }

.sf-row { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.sf-map {
  font-family: var(--eng); font-size: 14px; letter-spacing: .12em;
  color: var(--washi); border-bottom: 1px solid rgba(244,239,228,.5);
  padding-bottom: 4px; transition: color .25s, border-color .25s;
}
.sf-map:hover { color: var(--gold); border-color: var(--gold); }
.sf-sns { display: flex; align-items: center; gap: 20px; }
.sf-sns a { color: var(--washi); opacity: .85; transition: opacity .25s, color .25s; display: inline-flex; }
.sf-sns a:hover { opacity: 1; color: var(--gold); }
.sf-sns svg { width: 22px; height: 22px; fill: currentColor; display: block; }

.sf-right { display: flex; flex-direction: column; }
.sf-contents {
  font-family: var(--eng); font-size: clamp(28px,3.5vw,40px);
  letter-spacing: .06em; color: rgba(244,239,228,.18);
  text-transform: uppercase; margin-bottom: 28px; line-height: 1;
}
.sf-nav {
  list-style: none; display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 24px; margin-bottom: auto;
}
@media (max-width: 420px) { .sf-nav { grid-template-columns: 1fr; } }
.sf-nav a {
  position: relative; font-size: 14px; letter-spacing: .08em;
  color: rgba(244,239,228,.82); padding-left: 20px; transition: color .25s;
}
.sf-nav a::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 8px; height: 8px; border-radius: 50%; background: var(--gold); opacity: .85;
}
.sf-nav a:hover { color: var(--gold); }
.sf-copy {
  font-family: var(--eng); font-size: 12px; letter-spacing: .16em;
  color: rgba(244,239,228,.4); margin-top: 40px;
}