@charset "UTF-8";
/* ==========================================================================
   common.css — 全ページ共通
   変数 / ベース / 共通パーツ（見出し・ボタン・SNS） / ヘッダー / ナビ / フッター / スクロール表示
   並び：ベース → 1024px以下 → 768px以下 → 480px以下
   ========================================================================== */

:root {
  /* 色 */
  --c-bg: #f5f1ea;          /* 生成り（地） */
  --c-bg-sub: #ece3d6;      /* サンド（帯・交互の地） */
  --c-surface: #fbf8f3;     /* カード */
  --c-text: #2f2a25;        /* 墨茶 */
  --c-muted: #675e55;
  --c-line: rgba(47, 42, 37, .14);
  --c-accent: #c27b5c;      /* テラコッタ（装飾用：線・アイコン・大きな英字） */
  --c-accent-deep: #9e5b3d; /* テラコッタ濃（ボタン・小さな文字。白文字・地色とのコントラスト4.5:1以上） */
  --c-accent-darker: #82472d;
  --c-accent-pale: #f1ddd1;
  --c-sage: #7e8b6e;        /* 差し色（小さく使う） */
  --c-dark: #2b2622;

  /* 文字（Webフォントを使う場合は header.php に <link> を追加し、先頭にフォント名を足す） */
  --font-serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", serif;
  --font-sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  --font-en: "Didot", "Bodoni 72", "Bodoni MT", Georgia, "Times New Roman", serif;

  /* レイアウト */
  --header-h: 84px;
  --container: 1160px;
  --gutter: clamp(20px, 5vw, 56px);
  --section-y: clamp(96px, 12vw, 168px);
  --radius: 20px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

/* ---------- ベース ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}
body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.95;
  letter-spacing: .05em;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
address { font-style: normal; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 3px; }

.skip-link {
  position: absolute; left: 12px; top: -100px; z-index: 1000;
  padding: 10px 18px; border-radius: 8px;
  background: var(--c-dark); color: #fff; text-decoration: none;
}
.skip-link:focus { top: 12px; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}
.svg-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.container { width: min(100% - var(--gutter) * 2, var(--container)); margin-inline: auto; }
.section { position: relative; padding-block: var(--section-y); }
.main--offset { padding-top: var(--header-h); }   /* 子ページ用：固定ヘッダーの高さ分の余白 */

/* ---------- 見出し ---------- */
/* 英字ラベル（例：— Concept） */
.sec-label {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--font-en); font-style: italic;
  font-size: clamp(1rem, .9rem + .4vw, 1.25rem);
  letter-spacing: .08em; color: var(--c-accent-deep);
}
.sec-label::before { content: ""; width: 36px; height: 1px; background: currentColor; }

.sec-title {
  margin-top: 14px;
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(1.625rem, 1.2rem + 1.6vw, 2.5rem);
  line-height: 1.5; letter-spacing: .1em;
}
.sec-head--center { text-align: center; }
.sec-head--center .sec-label::after { content: ""; width: 36px; height: 1px; background: currentColor; }
.sec-lead { margin-top: 24px; color: var(--c-muted); }

/* 背景に薄く敷く大きな英字 */
.bg-word {
  position: absolute; z-index: 0; pointer-events: none; user-select: none;
  font-family: var(--font-en); font-style: italic; line-height: 1;
  font-size: clamp(5rem, 15vw, 13rem); letter-spacing: -.02em;
  color: rgba(194, 123, 92, .09);
  white-space: nowrap;
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .8em;
  min-height: 56px; padding: 0 2em;
  border: 1px solid var(--c-accent-deep); border-radius: 999px;
  background: var(--c-accent-deep); color: #fff;
  font-size: .9375rem; font-weight: 500; letter-spacing: .1em; text-decoration: none;
  transition: background-color .35s, border-color .35s, color .35s;
}
.btn::after {
  content: ""; width: 18px; height: 1px; background: currentColor;
  transition: transform .45s var(--ease);
}
.btn:hover { background: var(--c-accent-darker); border-color: var(--c-accent-darker); }
.btn:hover::after { transform: translateX(5px) scaleX(1.3); }
.btn--ghost { background: transparent; color: var(--c-text); border-color: var(--c-text); }
.btn--ghost:hover { background: var(--c-text); border-color: var(--c-text); color: #fff; }
.btn--sm { min-height: 44px; padding: 0 1.5em; font-size: .875rem; }
.btn--sm::after { display: none; }

/* ---------- SNS ---------- */
.sns-list { display: flex; flex-wrap: wrap; gap: 12px; }
.sns-list a {
  display: grid; place-items: center; width: 44px; height: 44px;
  border: 1px solid currentColor; border-radius: 50%;
  transition: background-color .3s, color .3s, border-color .3s;
}
.sns-list svg { width: 18px; height: 18px; }

/* ---------- ヘッダー ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100;
  height: var(--header-h);
}
/* 背景は疑似要素に敷く（header本体に backdrop-filter を付けると、中の固定配置ナビが header の高さに閉じ込められるため） */
.site-header::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: rgba(245, 241, 234, .86);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--c-line);
  opacity: 0; transition: opacity .4s;
}
.site-header.is-scrolled::before,
.site-header.is-solid::before { opacity: 1; }

.site-header__inner {
  display: flex; align-items: center; gap: 28px;
  width: min(100% - 48px, 1360px); height: 100%; margin-inline: auto;
}
.logo { position: relative; z-index: 2; flex-shrink: 0; display: block; text-decoration: none; }
.logo img { width: auto; height: 56px; }   /* ロゴの表示の高さ */
.logo--text { font-family: var(--font-serif); font-size: 1.25rem; letter-spacing: .12em; }

.nav { margin-left: auto; }
.nav ul { display: flex; gap: clamp(18px, 2vw, 32px); }
.nav a {
  position: relative; display: block; padding: 6px 0;
  font-size: .875rem; letter-spacing: .08em; text-decoration: none;
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px;
  background: var(--c-accent); transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease);
}
.nav a:hover::after { transform: scaleX(1); transform-origin: left; }
.header-cta { position: relative; z-index: 2; flex-shrink: 0; }
.nav-toggle { display: none; }

/* ---------- フッター ---------- */
.site-footer { background: var(--c-dark); color: #e9e2d8; padding: clamp(64px, 8vw, 96px) 0 28px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: #fff; }
.site-footer__inner {
  display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 48px;
  width: min(100% - var(--gutter) * 2, var(--container)); margin-inline: auto;
}
.site-footer__name { font-family: var(--font-serif); font-size: 1.375rem; letter-spacing: .14em; color: #fff; }
.site-footer address { margin-top: 20px; font-size: .875rem; line-height: 1.9; color: #c9c0b5; }
.site-footer address p + p { margin-top: 10px; }
.site-footer__nav { display: grid; grid-template-columns: repeat(2, auto); gap: 10px 32px; justify-content: start; font-size: .875rem; }
.site-footer .sns-list a { color: #e9e2d8; border-color: rgba(233, 226, 216, .35); }
.site-footer .sns-list a:hover { background: var(--c-accent); border-color: var(--c-accent); color: #fff; }
.site-footer__copy {
  width: min(100% - var(--gutter) * 2, var(--container)); margin: 56px auto 0; padding-top: 24px;
  border-top: 1px solid rgba(233, 226, 216, .15);
  font-size: .75rem; letter-spacing: .1em; color: #9d9389;
}

/* ---------- スクロール表示（JS有効時のみ隠す） ---------- */
.js [data-reveal] {
  opacity: 0; transform: translateY(32px);
  transition: opacity 1.1s var(--ease), transform 1.1s var(--ease);
  transition-delay: var(--d, 0s);
}
.js [data-reveal].is-inview { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* ==========================================================================
   1024px以下：ナビをハンバーガーに切り替え
   ========================================================================== */
@media (max-width: 1024px) {
  .header-cta { margin-left: auto; }
  .nav-toggle {
    position: relative; z-index: 2; display: grid; place-items: center;
    width: 48px; height: 48px; padding: 0; border: 0; border-radius: 50%;
    background: var(--c-text); cursor: pointer;
  }
  .nav-toggle__bar,
  .nav-toggle__bar::before,
  .nav-toggle__bar::after {
    display: block; width: 18px; height: 1.5px; background: #fff;
    transition: transform .4s var(--ease), background-color .2s;
  }
  .nav-toggle__bar { position: relative; }
  .nav-toggle__bar::before,
  .nav-toggle__bar::after { content: ""; position: absolute; left: 0; }
  .nav-toggle__bar::before { transform: translateY(-6px); }
  .nav-toggle__bar::after { transform: translateY(6px); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { transform: rotate(-45deg); }

  .nav {
    position: fixed; inset: 0; z-index: 1; margin: 0;
    display: grid; place-items: center;
    padding: calc(var(--header-h) + 24px) var(--gutter) 48px;
    background: var(--c-bg); overflow-y: auto;
    opacity: 0; visibility: hidden;
    transition: opacity .45s var(--ease), visibility .45s;
  }
  .nav.is-open { opacity: 1; visibility: visible; }
  .nav ul { flex-direction: column; gap: 6px; text-align: center; }
  .nav a { padding: 10px 0; font-family: var(--font-serif); font-size: 1.25rem; letter-spacing: .14em; }
  .nav li { opacity: 0; transform: translateY(14px); transition: opacity .5s var(--ease), transform .5s var(--ease); }
  .nav.is-open li { opacity: 1; transform: none; }
  .nav.is-open li:nth-child(2) { transition-delay: .05s; }
  .nav.is-open li:nth-child(3) { transition-delay: .1s; }
  .nav.is-open li:nth-child(4) { transition-delay: .15s; }
  .nav.is-open li:nth-child(5) { transition-delay: .2s; }
  .nav.is-open li:nth-child(6) { transition-delay: .25s; }
  .nav.is-open li:nth-child(n+7) { transition-delay: .3s; }
  .is-nav-open { overflow: hidden; }

  .site-footer__inner { grid-template-columns: 1fr 1fr; }
  .site-footer .sns-list { grid-column: 1 / -1; }
}

/* ==========================================================================
   768px以下
   ========================================================================== */
@media (max-width: 768px) {
  :root { --header-h: 68px; }
  body { font-size: .9375rem; line-height: 1.9; }
  .site-header__inner { width: calc(100% - 32px); gap: 12px; }
  .logo img { height: 44px; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 36px; }
}

/* ==========================================================================
   480px以下
   ========================================================================== */
@media (max-width: 480px) {
  .btn { width: 100%; }
  .btn--sm { width: auto; }
  .site-footer__nav { grid-template-columns: 1fr 1fr; gap: 8px 16px; }
}