/* ===========================================================
   シマの隠れ屋 サイトスタイル（飲食店プラン）
   reset.css の後に読み込むこと

   構成・CTA導線・フォントは参考サイト「じぶんどき 博多筑紫口店」
   （https://jibundoki.dkdining.com/hakata/）を調査して確定。
   配色はクライアント指定により、サイト背景ベースを黒とする和風の「隠れ家」トーン。
   アクセントカラーは支給された個室写真の灯り（琥珀色）から採った。
   シマライズ（コーポレートプラン）由来の角括弧見出し・丸みの強いカード意匠は使用しない。
   =========================================================== */

:root{
  --bg:#0b0a09;              /* サイト背景ベース（黒） */
  --bg-muted:#141110;        /* 一段明るい黒（セクション区切り用） */
  --text:#ffffff;            /* 本文・見出し・価格など、文字は全体的に白で統一 */
  --muted:#a89d8c;           /* サブテキスト */
  --line:#332c22;            /* 罫線（暗いトーン） */
  --primary:#c9974f;         /* メインアクセント（個室写真の灯りの琥珀色） */
  --primary-dark:#050403;    /* 最も暗いトーン（暗幕オーバーレイ・ドロワー） */
  --primary-vivid:#e0b872;   /* 明るめの琥珀（ホバー・強調） */
  --accent:#7c8f74;          /* ご予約CTA（じぶんどきの予約ボタンに準拠した深緑） */
  --tel:#b99480;             /* 電話予約CTA（じぶんどきの電話ボタンに準拠したタン） */
  --card:#1c1814;            /* カード面（背景よりわずかに明るい） */
  --shadow:0 10px 26px rgba(0,0,0,.55);
  --primary-tint:rgba(201,151,79,.12);
  --radius:4px;
  --max:1180px;
  --font-jp: "Noto Sans JP", "YuGothic", "游ゴシック", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --font-mincho: "YuMincho", "游明朝", "Hiragino Mincho ProN", "HiraMinProN-W3", "ＭＳ Ｐ明朝", serif;
}

html{
  scroll-behavior:smooth;
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
}

body{
  font-family: var(--font-jp);
  color:var(--text);
  background:var(--bg);
  line-height:1.8;
  font-weight:400;
}

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

.container{width:min(var(--max), 92vw); margin-inline:auto}

.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  background:var(--primary);
  color:#1a1512;
  padding:.6rem 1rem;
  z-index:100;
}
.skip-link:focus{left:1rem; top:1rem}

/* ========== Buttons ========== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:.8rem 1.4rem;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--card);
  color:var(--text);
  font-weight:700;
  font-size:.95rem;
  white-space:nowrap;
  transition:.15s transform, .15s filter;
}
.btn:hover{transform:translateY(-1px); filter:brightness(.96)}
.btn--primary{background:var(--primary); border-color:transparent; color:#fff}
.btn--accent{background:var(--accent); border-color:transparent; color:#fff}
.btn--tel{background:var(--tel); border-color:transparent; color:#fff}
.btn--ghost{background:rgba(255,255,255,.1); border-color:rgba(255,255,255,.6); color:#fff}
.btn:disabled{
  opacity:.55;
  cursor:not-allowed;
  pointer-events:none;
}

.btn-spinner{
  width:14px;
  height:14px;
  border:2px solid rgba(255,255,255,.4);
  border-top-color:#fff;
  border-radius:50%;
  margin-right:.55rem;
  animation:btn-spinner-rotate .6s linear infinite;
}
@keyframes btn-spinner-rotate{
  to{transform:rotate(360deg)}
}

.link-more{
  color:var(--text);
  font-weight:700;
  border-bottom:1px solid var(--primary);
  padding-bottom:.15rem;
}

/* ========== Header ========== */
.site-header{
  position:sticky;
  top:0;
  z-index:40;
  background:rgba(11,10,9,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header__inner{
  display:flex;
  align-items:center;
  gap:1.5rem;
  padding:.9rem 0;
}
/* ロゴはヘッダーの高さより大きく表示し、下側にはみ出させて目立たせる */
.brand{
  position:relative;
  display:block;
  height:52px;
  width:160px;
  flex-shrink:0;
}
.brand__mark{
  width:40px; height:40px;
  display:grid; place-items:center;
  overflow:hidden;
  flex-shrink:0;
}
.brand__mark img{width:100%; height:100%; object-fit:cover}
.brand__name{
  position:absolute;
  left:0;
  top:0;
  height:96px;
  width:auto;
  object-fit:contain;
  display:block;
}

.gnav{
  margin-left:auto;
}
.gnav ul{
  display:flex;
  gap:1.6rem;
  flex-wrap:wrap;
  font-weight:500;
  font-size:.9rem;
}
.gnav a:hover{text-decoration:underline}

.site-header__cta{
  display:flex;
  align-items:center;
  gap:.6rem;
}
.site-header__tel{
  display:none;
  align-items:center;
  gap:.4rem;
  color:var(--text);
  font-weight:700;
  font-size:.95rem;
}
.site-header__tel small{display:block; font-weight:500; font-size:.7rem; color:var(--muted)}

.hamburger{
  display:none;
  width:42px; height:42px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  align-items:center;
  justify-content:center;
  background:var(--card);
  flex-shrink:0;
}
.hamburger span{
  width:18px; height:2px; background:var(--primary); display:block; position:relative;
}
.hamburger span::before,
.hamburger span::after{
  content:""; position:absolute; left:0; width:18px; height:2px; background:var(--primary);
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}

/* モバイルドロワー（じぶんどきのグローバルメニューに準拠した暗幕パネル） */
.mobile-nav{
  display:none;
  position:absolute;
  top:100%;
  left:0;
  right:0;
  max-height:calc(100vh - 100%);
  overflow-y:auto;
  background:rgba(5,4,3,.97);
  padding:.8rem 0 1.2rem;
  box-shadow:var(--shadow);
}
.mobile-nav.is-open{display:block}
.mobile-nav ul{
  display:grid;
  gap:0;
  font-weight:700;
  width:min(var(--max), 92vw);
  margin-inline:auto;
}
.mobile-nav li{border-top:1px solid rgba(255,255,255,.18)}
.mobile-nav li:first-child{border-top:none}
.mobile-nav a{
  display:block;
  padding:.9rem .5rem;
  color:#fff;
}

/* ========== Hero（支給写真を大きく1枚見せ＋暗幕オーバーレイ） ========== */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  overflow:hidden;
}
.hero__bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
}
.hero__dim{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(5,4,3,.55) 0%, rgba(5,4,3,.15) 40%, rgba(5,4,3,.65) 100%);
}
.hero__inner{
  position:relative;
  z-index:1;
  color:#fff;
  text-align:center;
  padding:4rem 0;
}
.hero__title{
  font-family:var(--font-mincho);
  font-size:clamp(1.8rem, 4vw, 2.8rem);
  line-height:1.6;
  font-weight:700;
  letter-spacing:.05em;
  margin-bottom:1.3rem;
  text-shadow:0 2px 12px rgba(0,0,0,.4);
}
.hero__lead{
  color:rgba(255,255,255,.92);
  font-weight:500;
  max-width:640px;
  margin-inline:auto;
  margin-bottom:2rem;
  text-shadow:0 1px 8px rgba(0,0,0,.4);
}
.hero__actions{
  display:flex;
  justify-content:center;
  gap:.9rem;
  flex-wrap:wrap;
}
.hero__actions .btn{min-width:9.5rem}

/* ========== Section heading（英字サブタイトル＋明朝タイトル＋細罫線） ========== */
.section-heading{
  width:fit-content;
  max-width:100%;
  margin:0 auto 2.8rem;
  text-align:center;
}
.section-heading__en{
  display:block;
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--text);
  margin-bottom:.7rem;
}
.section-heading__ja{
  font-family:var(--font-mincho);
  font-size:1.75rem;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--text);
  padding-bottom:1.1rem;
  position:relative;
}
.section-heading__ja::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  transform:translateX(-50%);
  width:36px;
  height:2px;
  background:var(--primary-vivid);
}

/* ========== Features（こだわり・特徴） ========== */
.features{
  padding:4.6rem 0;
  background:var(--bg-muted);
}
.features__heading{
  text-align:center;
  margin-bottom:2.8rem;
}
.features__eyebrow{
  display:block;
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--text);
  margin-bottom:.7rem;
}
.features__title{
  font-family:var(--font-mincho);
  font-size:clamp(1.7rem, 3.2vw, 2.3rem);
  font-weight:700;
  color:var(--text);
  margin:0;
  line-height:1.6;
}
.features-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  max-width:980px;
  margin-inline:auto;
}
.feature-card{
  padding:0 2.6rem;
  text-align:center;
  border-left:1px solid var(--line);
}
.feature-card:first-child{border-left:none}
.feature-card__num{
  display:block;
  font-family:var(--font-mincho);
  font-size:2.8rem;
  font-weight:700;
  line-height:1;
  color:var(--primary-vivid);
  opacity:.8;
  margin-bottom:1.3rem;
}
.feature-card__title{
  font-family:var(--font-mincho);
  font-size:1.15rem;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--text);
  line-height:1.75;
  margin-bottom:1.1rem;
}
.feature-card__text{
  color:var(--muted);
  font-size:.85rem;
  line-height:1.9;
}

/* ========== Breadcrumb（子ページ用） ========== */
.breadcrumb{padding:1.1rem 0}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  list-style:none;
  margin:0;
  padding:0;
  font-size:.82rem;
  color:var(--muted);
}
.breadcrumb li{display:flex; align-items:center}
.breadcrumb li:not(:last-child)::after{
  content:"›";
  margin:0 .5rem;
  color:var(--muted);
}
.breadcrumb a{color:var(--text); font-weight:700}
.breadcrumb [aria-current="page"]{color:var(--muted)}

/* ========== Section common ========== */
.section{padding:4.6rem 0; scroll-margin-top:90px}
.section--muted{background:var(--bg-muted)}
.section__more{text-align:center; margin-top:2.2rem}
.cta{scroll-margin-top:90px}

/* ========== Menu（メニュー抜粋・一覧） ========== */
.menu-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1.4rem;
}
.menu-card{
  border:1px solid var(--line);
  overflow:hidden;
  background:var(--card);
}
.menu-card__img{
  width:100%;
  height:180px;
  object-fit:cover;
  background:var(--bg-muted);
}
.menu-card__body{padding:1.2rem}
.menu-card__name{font-size:1rem; font-weight:700; color:var(--text); margin-bottom:.4rem}
.menu-card__price{color:var(--text); font-weight:700; font-size:.9rem}
.menu-card__desc{color:var(--muted); font-size:.85rem; line-height:1.7; margin-top:.4rem}

/* 品目・価格のみのシンプルなメニュー表（料理写真支給前の暫定表示） */
.menu-jumpnav{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:.6rem;
  margin:0 auto 3.2rem;
}
.menu-jumpnav a{
  display:inline-flex;
  align-items:center;
  padding:.5rem 1.2rem;
  border:1px solid var(--line);
  font-size:.82rem;
  font-weight:700;
  color:var(--text);
  background:var(--card);
}
.menu-jumpnav a:hover{border-color:var(--primary-vivid)}
.menu-category{margin-bottom:3.2rem; scroll-margin-top:90px}
.menu-category:last-child{margin-bottom:0}
.menu-category__title{
  font-family:var(--font-mincho);
  font-size:1.25rem;
  font-weight:700;
  color:var(--text);
  margin-bottom:1.3rem;
  padding-bottom:.7rem;
  border-bottom:1px solid var(--line);
}
.menu-list{display:grid; gap:1rem; max-width:760px; margin-inline:auto}
.menu-list__item{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:1.2rem;
  padding-bottom:1rem;
  border-bottom:1px dotted var(--line);
}
.menu-list__item:last-child{border-bottom:none; padding-bottom:0}
.menu-list__name{font-weight:700; color:var(--text)}
.menu-list__desc{display:block; margin-top:.3rem; color:var(--muted); font-size:.82rem; font-weight:400; line-height:1.6}
.menu-list__price{flex-shrink:0; color:var(--text); font-weight:700; white-space:nowrap}

/* メニューの「すべて見る」スライドダウン開閉 */
.menu-toggle-btn{
  background:none;
  cursor:pointer;
}
.menu-toggle-btn::after{
  content:"▾";
  display:inline-block;
  margin-left:.4rem;
  transition:transform .3s ease;
}
.menu-toggle-btn[aria-expanded="true"]::after{transform:rotate(180deg)}
.menu-full{
  max-height:0;
  overflow:hidden;
  transition:max-height .5s ease;
}
.menu-full__inner{padding-top:3rem}

/* ========== Gallery（店内・外観紹介） ========== */
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:.8rem;
}
.gallery-grid--2col{grid-template-columns:repeat(2, 1fr)}
.gallery-grid__item{
  aspect-ratio:4/3;
  background:var(--bg-muted);
  overflow:hidden;
}
.gallery-grid__item img{width:100%; height:100%; object-fit:cover}

/* ========== Gallery slider（スライドショー・3枚表示で1枚ずつ送る） ========== */
.gallery-slider{position:relative}
.gallery-slider__track{
  display:flex;
  gap:.8rem;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scroll-behavior:smooth;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.gallery-slider__track::-webkit-scrollbar{display:none}
.gallery-slider__slide{
  flex:0 0 calc((100% - 1.6rem) / 3);
  scroll-snap-align:start;
  aspect-ratio:4/3;
  background:var(--bg-muted);
  overflow:hidden;
}
.gallery-slider__slide img{width:100%; height:100%; object-fit:cover; display:block}
.gallery-slider__nav{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  width:44px; height:44px;
  border-radius:50%;
  background:rgba(5,4,3,.6);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:1.5rem;
  line-height:1;
  cursor:pointer;
  z-index:2;
  transition:background .15s;
}
.gallery-slider__nav:hover{background:rgba(5,4,3,.85)}
.gallery-slider__nav--prev{left:.7rem}
.gallery-slider__nav--next{right:.7rem}
.gallery-slider__dots{
  display:flex;
  justify-content:center;
  gap:.55rem;
  margin-top:1.2rem;
}
.gallery-slider__dot{
  width:9px; height:9px;
  border-radius:50%;
  background:var(--line);
  cursor:pointer;
}
.gallery-slider__dot.is-active{background:var(--primary-vivid)}

/* ========== Access（アクセス・店舗情報） ========== */
.access__inner{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:2.6rem;
  align-items:start;
}
.access-table{
  display:grid;
  gap:0;
  border-top:1px solid var(--line);
}
.access-table__row{
  display:grid;
  grid-template-columns:140px 1fr;
  gap:1rem;
  padding:.8rem 0;
  border-bottom:1px solid var(--line);
}
.access-table__row dt{font-weight:700; color:var(--text); font-size:.9rem}
.access-table__row dd{color:var(--text); font-weight:400; font-size:.9rem}

.hours-table{
  width:100%;
  border-collapse:collapse;
  margin-top:1.4rem;
}
.hours-table caption{
  text-align:left;
  font-weight:700;
  color:var(--text);
  margin-bottom:.7rem;
}
.hours-table th,
.hours-table td{
  padding:.6rem .8rem;
  border:1px solid var(--line);
  font-size:.88rem;
  text-align:left;
}
.hours-table th{background:var(--bg-muted); color:var(--text); font-weight:700; white-space:nowrap}
.hours-table__closed{color:var(--text); font-weight:700}

.map-embed{
  position:relative;
  width:100%;
  aspect-ratio:4/3;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-muted);
}
.map-embed iframe{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  border:0;
}
.map-embed__placeholder{
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  color:var(--muted);
  font-size:.85rem;
  text-align:center;
  padding:1rem;
}

/* ========== News ========== */
.news-list{
  display:grid;
  gap:.8rem;
}
.news-item{
  display:grid;
  grid-template-columns:120px 90px 1fr;
  align-items:center;
  gap:1rem;
  padding:1rem 1.1rem;
  border:1px solid var(--line);
  background:var(--card);
}
.news-item__date{color:var(--text); font-weight:700}
.news-item__tag{
  display:inline-flex;
  justify-content:center;
  width:5.2em;
  box-sizing:border-box;
  padding:.25rem 0;
  border:1px solid var(--primary-vivid);
  color:var(--text);
  font-weight:700;
  font-size:.78rem;
}
.news-item__text{font-weight:500; color:var(--text)}
a.news-item__text{text-decoration:none}
a.news-item__text:hover{text-decoration:underline}

.news-article{max-width:760px; margin:0 auto}
.news-article__meta{
  display:flex;
  align-items:center;
  gap:.8rem;
  margin-bottom:1.2rem;
}
.news-article__date{color:var(--text); font-weight:700; font-size:.9rem}
.news-article__title{
  font-family:var(--font-mincho);
  font-size:1.5rem;
  font-weight:700;
  color:var(--text);
  margin:0 0 1.8rem;
  line-height:1.7;
}
.news-article__body{color:var(--text); font-size:.95rem; line-height:1.9}
.news-article__body p{margin:0 0 1.2rem}
.news-article__body p:last-child{margin-bottom:0}
.news-article__back{margin-top:2.8rem; text-align:center}

/* ========== FAQ ========== */
.faq-list{
  display:grid;
  gap:.8rem;
  max-width:760px;
  margin-inline:auto;
}
.faq-item{
  border:1px solid var(--line);
  background:var(--card);
  padding:1rem 1.2rem;
}
.faq-item__q{
  cursor:pointer;
  font-weight:700;
  color:var(--text);
  list-style:none;
}
.faq-item__q::-webkit-details-marker{display:none}
.faq-item__q::before{
  content:"Q. ";
  color:var(--text);
  font-weight:700;
}
.faq-item__a{
  margin-top:.7rem;
  padding-top:.7rem;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-weight:400;
}

/* ========== CTA ========== */
.cta{
  background:var(--bg-muted);
  color:var(--text);
  padding:3.8rem 0;
}
.cta__inner{
  text-align:center;
  display:grid;
  gap:.9rem;
  justify-items:center;
}
.cta__title{font-family:var(--font-mincho); font-size:1.5rem; font-weight:700; letter-spacing:.05em}
.cta__text{color:rgba(255,255,255,.85); font-weight:400}

/* ========== Reserve form（ご予約フォーム） ========== */
.contact-form{
  display:grid;
  gap:1.4rem;
  max-width:640px;
  margin:2.2rem auto 0;
  padding:2.2rem;
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.contact-form--plain{
  margin:0 auto;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.contact-form__done{
  margin:0;
  padding:.8rem 1rem;
  background:var(--primary-tint);
  color:var(--text);
  font-weight:700;
  text-align:center;
}
.form-field{display:grid; gap:.4rem}
.form-field label{font-weight:700; color:var(--text); font-size:.9rem}
.form-field input,
.form-field textarea,
.form-field select{
  width:100%;
  min-width:0;
  box-sizing:border-box;
  font:inherit;
  padding:.7rem .9rem;
  border:1px solid var(--line);
  background:var(--bg);
  color:var(--text);
  resize:vertical;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus{
  outline:2px solid var(--primary-vivid);
  outline-offset:1px;
}
.contact-form .btn{justify-self:center; margin-top:.4rem}
#formStepInput,
#formStepConfirm,
#formStepComplete{display:grid; gap:1.4rem}
#formStepInput[hidden],
#formStepConfirm[hidden],
#formStepComplete[hidden]{display:none}
.form-steps{
  display:flex;
  justify-content:center;
  gap:1.6rem;
  max-width:640px;
  margin:0 auto 1.4rem;
  padding:0;
  list-style:none;
  font-size:.85rem;
  font-weight:700;
  color:var(--muted);
}
.form-steps__step.is-current{color:var(--text)}
.recaptcha-wrap{display:grid; gap:.6rem; justify-items:center}
.recaptcha-error{color:#c0392b; font-size:.85rem; margin:0}
.form-actions{
  display:flex;
  justify-content:center;
  gap:.9rem;
  flex-wrap:wrap;
}
.form-actions .btn{margin-top:0}
.reserve-note{
  max-width:640px;
  margin:0 auto 2rem;
  padding:1rem 1.2rem;
  border:1px solid var(--line);
  background:var(--bg-muted);
  color:var(--muted);
  font-size:.85rem;
  line-height:1.8;
}

/* ========== Footer ========== */
.site-footer{
  background:var(--bg-muted);
  color:rgba(236,229,216,.85);
  padding:3rem 0 1.6rem;
}
.site-footer__grid{
  display:grid;
  grid-template-columns:1fr;
  gap:2rem;
  text-align:center;
}
.site-footer__heading{font-weight:700; color:#fff; margin-bottom:.9rem}
.site-footer__links ul{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:.6rem 1.6rem;
}
.site-footer__links a{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  color:rgba(255,255,255,.75);
}
.site-footer__links a svg{flex-shrink:0}
.site-footer__actions{
  display:flex;
  justify-content:center;
  gap:.8rem;
  flex-wrap:wrap;
  margin-top:2.2rem;
}
.site-footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);
  margin-top:2.2rem;
  padding-top:1.2rem;
  color:rgba(255,255,255,.55);
  font-size:.85rem;
  text-align:center;
}

/* ========== モバイル固定CTAバー（じぶんどきのsp_cvに準拠） ========== */
.sp-cv{
  display:none;
}

/* ========== 404 ========== */
.not-found-section{
  min-height:60vh;
  display:flex;
  align-items:center;
}
.not-found{
  max-width:480px;
  margin:0 auto;
  text-align:center;
}
.not-found__code{
  font-family:var(--font-mincho);
  font-size:4.5rem;
  font-weight:700;
  color:var(--text);
  line-height:1;
  letter-spacing:.05em;
  margin-bottom:.5rem;
}
.not-found__title{
  font-size:1.3rem;
  font-weight:700;
  color:var(--text);
  margin-bottom:.9rem;
}
.not-found__text{
  color:var(--muted);
  line-height:1.8;
  margin-bottom:2.2rem;
}

/* ========== Scroll to top button ========== */
.scroll-top-btn{
  position:fixed;
  right:1.2rem;
  bottom:1.2rem;
  width:52px;
  height:52px;
  border:none;
  border-radius:50%;
  padding:0;
  background:var(--primary);
  color:#1a1512;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .25s, transform .25s, visibility .25s;
  z-index:60;
  box-shadow:0 6px 14px rgba(0,0,0,.28);
}
.scroll-top-btn::before{
  content:"↑";
  font-size:1.2rem;
}
.scroll-top-btn.is-visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.scroll-top-btn:hover{transform:translateY(-3px)}
@media (prefers-reduced-motion:reduce){
  .scroll-top-btn{transition:opacity .01s}
}

/* ===========================================================
   Responsive
   =========================================================== */
@media (min-width:1024px){
  .site-header__tel{display:flex}
}

@media (max-width:980px){
  .gnav{display:none}
  .hamburger{display:inline-flex}
  .site-header__cta{margin-left:auto}
  .features-grid{grid-template-columns:1fr; max-width:420px; gap:2rem}
  .feature-card{border-left:none; border-top:1px solid var(--line); padding:2rem 1rem 0}
  .feature-card:first-child{border-top:none; padding-top:0}
  .menu-grid{grid-template-columns:repeat(2, 1fr)}
  .gallery-grid{grid-template-columns:repeat(2, 1fr)}
  .gallery-slider__slide{flex-basis:calc((100% - .8rem) / 2)}
  .access__inner{grid-template-columns:1fr}
}

@media (max-width:768px){
  .sp-cv{
    display:flex;
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:50;
    background:var(--card);
    box-shadow:0 -4px 14px rgba(0,0,0,.4);
  }
  .sp-cv a{
    flex:1;
    display:flex;
    align-items:center;
    justify-content:center;
    gap:.4rem;
    padding:.9rem .5rem;
    color:#fff;
    font-weight:700;
    font-size:.85rem;
  }
  .sp-cv a.btn--tel{background:var(--tel)}
  .sp-cv a.btn--accent{background:var(--accent)}
  /* 固定バーの分だけフッターが隠れないよう余白を確保 */
  .site-footer{padding-bottom:calc(1.6rem + 58px)}
}

@media (max-width:640px){
  .site-header__inner{padding:.7rem 0}
  .brand{height:38px; width:120px}
  .brand__name{height:72px}
  .site-header__cta .btn{padding:.55rem .9rem; font-size:.82rem}
  .scroll-top-btn{width:46px; height:46px; right:.8rem; bottom:calc(.8rem + 58px)}
  .hero{min-height:100svh}
  .hero__actions .btn{min-width:0; flex:1}
  .section{padding:3.2rem 0}
  .section-heading__ja{font-size:1.4rem}
  .news-item{grid-template-columns:auto 1fr; gap:.35rem .6rem}
  .news-item__date{grid-column:1 / -1}
  .gallery-slider__slide{flex-basis:100%}
  .features-grid{grid-template-columns:1fr}
  .menu-grid{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:1fr}
  .access-table__row{grid-template-columns:1fr}
  .site-footer__links a{font-size:.85rem}
}