/* ============================================================
   ONE-PAGE HOUSE MANUAL  (Morimi-style: single page + TOC)
   ============================================================ */
:root{
  --primary:#A0522D; --primary-light:#EFE0CC; --primary-dark:#4A2C17;
  --accent:#8B6F4E; --bg:#F5ECD9; --surface:#FFFFFF; --ink:#2A1F12;
  --ink-soft:#7A6A50; --line:#E8D9C2; --radius:16px;
  --shadow:0 2px 16px rgba(74,44,23,.12); --shadow-lg:0 10px 34px rgba(74,44,23,.18);
  --font:'Noto Sans JP','Noto Sans KR','Noto Sans SC',system-ui,sans-serif;
  --serif:'Playfair Display','Noto Serif JP',serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.75;font-size:15px;overflow-x:hidden}

/* language show/hide */
[data-l]{display:none}
.lang-ja [data-l="ja"],.lang-en [data-l="en"],.lang-ko [data-l="ko"],.lang-zh [data-l="zh"],.lang-zh-tw [data-l="zh-tw"]{display:revert}
.lang-zh-tw [data-l="zh"]{display:revert}
.lang-zh-tw.tw-ready [data-l="zh"]{display:none}

/* ── sticky header ── */
.hd{position:fixed;top:0;left:0;right:0;z-index:200;padding:12px 20px;transition:.35s;background:transparent}
.hd.scrolled{background:rgba(255,255,255,.96);backdrop-filter:blur(10px);box-shadow:0 2px 16px rgba(0,0,0,.08)}
.hd__in{max-width:760px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:10px}
.hd__logo{font-family:var(--serif);font-size:20px;font-weight:600;color:#fff;letter-spacing:.02em;transition:.35s;white-space:nowrap}
.hd.scrolled .hd__logo{color:var(--primary-dark)}
.langs{display:flex;gap:4px}
.langs button{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.4);border-radius:20px;padding:4px 11px;font-size:11px;font-weight:600;cursor:pointer;transition:.2s;font-family:var(--font)}
.langs button.active{background:#fff;color:var(--primary-dark);border-color:#fff}
.hd.scrolled .langs button{background:var(--primary-light);color:var(--primary-dark);border-color:var(--line)}
.hd.scrolled .langs button.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ── hero ── */
.hero{position:relative;height:100svh;min-height:460px;overflow:hidden;background:var(--primary-dark);display:flex;align-items:flex-end}
.hero__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__ov{position:absolute;inset:0;background:linear-gradient(to bottom,rgba(0,0,0,.05),rgba(0,0,0,.15) 45%,rgba(0,0,0,.62))}
.hero__c{position:relative;max-width:760px;margin:0 auto;width:100%;padding:0 24px 64px;color:#fff}
.hero__tag{letter-spacing:.32em;font-size:12px;opacity:.9;margin-bottom:14px}
.hero__title{font-family:var(--serif);font-size:clamp(38px,8vw,76px);font-weight:600;line-height:1.05}
.hero__welcome{margin-top:14px;font-size:16px;opacity:.95;max-width:32em}
.hero__down{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);color:#fff;font-size:26px;opacity:.85;animation:bob 1.8s ease-in-out infinite;text-decoration:none}
@keyframes bob{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}

/* ── layout ── */
main{max-width:760px;margin:0 auto;padding:0 20px}
.section{padding:44px 0 8px;scroll-margin-top:70px}
.section__head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.section__ic{font-size:26px;line-height:1;flex:0 0 auto}
.section__title{font-size:21px;font-weight:700;color:var(--primary-dark)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card + .card{margin-top:14px}
.muted{color:var(--ink-soft)}
.note{background:var(--primary-light);border-radius:12px;padding:14px 16px;color:var(--primary-dark);font-size:14px;margin-top:14px}

/* TOC */
.toc{padding:52px 0 8px}
.toc__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.toc a{display:flex;align-items:center;gap:9px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:13px 15px;text-decoration:none;color:var(--ink);font-weight:500;transition:.15s}
.toc a:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
.toc a .ic{font-size:19px}

/* key-value rows */
.kv{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.kv:last-child{border-bottom:0}
.kv__k{font-size:12px;font-weight:700;color:var(--ink-soft);width:44px;flex:0 0 auto}
.kv__v{font-size:17px;font-weight:600;font-family:ui-monospace,Menlo,monospace;letter-spacing:.02em}
.copy{margin-left:auto;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;padding:5px 13px;font-size:13px;cursor:pointer;font-family:inherit;transition:.15s}
.copy:hover{border-color:var(--accent);background:#fff}

/* steps */
.steps{list-style:none;counter-reset:s;margin-top:6px}
.steps li{counter-increment:s;position:relative;padding:9px 0 9px 40px;border-bottom:1px solid var(--line)}
.steps li:last-child{border-bottom:0}
.steps li::before{content:counter(s);position:absolute;left:0;top:8px;width:26px;height:26px;border-radius:50%;background:var(--primary-light);color:var(--primary-dark);font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center}

/* accordion (facilities) */
.acc{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.acc>summary{list-style:none;cursor:pointer;padding:15px 18px;display:flex;align-items:center;gap:11px;font-weight:600}
.acc>summary::-webkit-details-marker{display:none}
.acc>summary::after{content:"＋";margin-left:auto;color:var(--accent);font-weight:700}
.acc[open]>summary::after{content:"－"}
.acc__body{padding:4px 18px 18px}
.acc__img{width:100%;border-radius:10px;margin-bottom:12px;aspect-ratio:3/2;object-fit:cover;background:var(--primary-light)}
.ul{list-style:none}
.ul li{position:relative;padding:7px 0 7px 20px;border-bottom:1px solid var(--line)}
.ul li:last-child{border-bottom:0}
.ul li::before{content:"•";position:absolute;left:4px;color:var(--accent)}

/* buttons / links */
.btn{display:inline-block;background:var(--primary);color:#fff;text-decoration:none;padding:14px 30px;border-radius:12px;font-weight:600;transition:.15s;box-shadow:var(--shadow)}
.btn:hover{filter:brightness(1.06);transform:translateY(-1px)}
.map{width:100%;aspect-ratio:16/9;border:0;border-radius:12px;margin-top:12px}
.faq-q{font-weight:700;margin-bottom:6px}
.faq-a{color:var(--ink-soft)}
.tel{font-size:22px;font-weight:700;color:var(--primary-dark);text-decoration:none}
.pubnum{font-size:18px;font-weight:700}

/* footer */
.ft{margin-top:56px;background:var(--primary-light);text-align:center;padding:40px 20px}
.ft__brand{font-family:var(--serif);font-size:24px;color:var(--primary-dark)}
.ft__c{color:var(--ink-soft);font-size:13px;margin-top:8px}