/* シートピア 共通スタイル */
:root{
  --sea:#0b5a73; --sea-deep:#073b4c; --turq:#14a3a8; --turq-l:#d9f2f1;
  --sand:#f8f5ee; --ink:#1f2a30; --muted:#5d6b72; --line:#e3e7e8;
  --line-green:#06c755; --radius:14px; --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans JP","Noto Sans SC",system-ui,-apple-system,"Hiragino Sans","Yu Gothic",sans-serif;color:var(--ink);background:#fff;line-height:1.85;font-size:16px;-webkit-text-size-adjust:100%}
img,video{max-width:100%;display:block}
a{color:var(--sea)}
h1,h2,h3{line-height:1.4;font-family:"Noto Serif JP","Noto Serif SC",serif;font-weight:600;letter-spacing:.04em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* header */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hd .wrap{display:flex;align-items:center;gap:12px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--sea-deep);font-weight:700;letter-spacing:.06em;margin-right:auto}
.brand img{height:34px;width:auto}
.brand span{font-family:"Noto Serif JP",serif;font-size:18px}
.nav{display:flex;gap:18px}
.nav a{text-decoration:none;color:var(--ink);font-size:14px;white-space:nowrap}
.nav a:hover,.nav a[aria-current]{color:var(--turq)}
.lang{display:flex;gap:2px;font-size:13px}
.lang a{padding:4px 8px;border-radius:20px;text-decoration:none;color:var(--muted)}
.lang a[aria-current]{background:var(--turq-l);color:var(--sea-deep);font-weight:700}
.btn-line-s{background:var(--line-green);color:#fff;text-decoration:none;padding:7px 14px;border-radius:30px;font-size:13px;font-weight:700;white-space:nowrap}
.menu-btn{display:none;background:none;border:0;padding:8px;cursor:pointer}
.menu-btn span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0}
@media (max-width:980px){
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid var(--line);padding:8px 16px 16px}
  .nav.open{display:flex}
  .nav a{padding:12px 4px;border-bottom:1px solid var(--line);font-size:15px}
  .menu-btn{display:block}
  .brand span{font-size:16px}
}
@media (max-width:520px){ .btn-line-s{display:none} .brand span{display:none} }

/* hero */
.hero{position:relative;height:min(88vh,760px);min-height:440px;color:#fff;overflow:hidden;background:var(--sea-deep)}
.hero video,.hero .bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.15),rgba(0,30,45,.55))}
.hero .in{position:relative;z-index:1;height:100%;display:flex;flex-direction:column;justify-content:flex-end;padding-bottom:56px}
.hero .kicker{letter-spacing:.3em;font-size:13px;opacity:.9;margin:0}
.hero h1{font-size:clamp(30px,6vw,56px);margin:.2em 0 .3em;font-weight:500}
.hero p.lead{font-size:clamp(15px,2.2vw,18px);max-width:640px;margin:0 0 24px}
.page-hero{height:min(60vh,520px);min-height:340px}

/* buttons */
.btns{display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:40px;text-decoration:none;font-weight:700;font-size:15px;border:2px solid transparent;transition:.2s}
.btn-line{background:var(--line-green);color:#fff}
.btn-line:hover{filter:brightness(1.07)}
.btn-ghost{border-color:currentColor;color:inherit}
.btn-sea{background:var(--sea);color:#fff}
.btn-sea:hover{background:var(--sea-deep)}
.btn-ota{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ota:hover{border-color:var(--turq)}

/* sections */
section{padding:72px 0}
.sec-sand{background:var(--sand)}
.sec-title{text-align:center;margin-bottom:40px}
.sec-title .en{display:block;color:var(--turq);font-size:13px;letter-spacing:.35em;text-transform:uppercase;font-family:"Noto Sans JP",sans-serif;font-weight:700}
.sec-title h2{font-size:clamp(24px,3.6vw,34px);margin:.3em 0 0}
.prose{max-width:760px;margin:0 auto}
.prose p{margin:0 0 1.1em}
.center{text-align:center}

.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split img{border-radius:var(--radius);width:100%;aspect-ratio:4/3;object-fit:cover}
@media (max-width:820px){.split{grid-template-columns:1fr;gap:24px}}

/* property cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:28px}
.card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 6px 24px rgba(7,59,76,.09);display:flex;flex-direction:column}
.card img{aspect-ratio:3/2;object-fit:cover;width:100%}
.card .body{padding:22px;display:flex;flex-direction:column;gap:6px;flex:1}
.card .area{color:var(--turq);font-size:13px;font-weight:700;letter-spacing:.1em}
.card h3{margin:0;font-size:22px}
.card p{margin:0;color:var(--muted);font-size:14px}
.card .btns{margin-top:auto;padding-top:14px}
.tag{display:inline-block;background:var(--turq-l);color:var(--sea-deep);font-size:12px;padding:2px 10px;border-radius:20px;margin:2px 4px 2px 0}

/* facts */
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin:28px 0}
.fact{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.fact b{display:block;color:var(--turq);font-size:12px;letter-spacing:.12em}
.fact span{font-size:16px;font-weight:700}
.access{list-style:none;padding:0;margin:0}
.access li{padding:14px 0;border-bottom:1px dashed var(--line);display:grid;grid-template-columns:120px 1fr;gap:12px}
.access li b{color:var(--sea)}
@media (max-width:520px){.access li{grid-template-columns:1fr;gap:2px}}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.gallery figure{margin:0;position:relative;cursor:zoom-in;overflow:hidden;border-radius:10px}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s}
.gallery figure:hover img{transform:scale(1.04)}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:18px 10px 8px;background:linear-gradient(transparent,rgba(0,0,0,.55));color:#fff;font-size:13px}
@media (max-width:520px){.gallery{grid-template-columns:repeat(2,1fr);gap:6px}}
.lb{position:fixed;inset:0;background:rgba(0,0,0,.92);display:none;align-items:center;justify-content:center;z-index:100;flex-direction:column}
.lb.open{display:flex}
.lb img{max-height:82vh;max-width:94vw;border-radius:6px}
.lb p{color:#fff;margin:12px 0 0;font-size:14px}
.lb button{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;font-size:28px;width:48px;height:48px;border-radius:50%;cursor:pointer}
.lb .x{top:16px;right:16px}.lb .pv{left:12px;top:50%}.lb .nx{right:12px;top:50%}

.plan{background:#fff;border-radius:var(--radius);padding:16px;border:1px solid var(--line)}
.map{width:100%;height:360px;border:0;border-radius:var(--radius)}

/* facilities */
.fac-group{margin-bottom:36px}
.fac-group h3{font-size:20px;border-left:4px solid var(--turq);padding-left:12px}
.fac{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;list-style:none;padding:0;margin:0}
.fac li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 8px;text-align:center;font-size:13px;line-height:1.5}
.fac img{width:44px;height:44px;object-fit:contain;margin:0 auto 8px}
.fac small{display:block;color:var(--muted);font-size:11px;margin-top:4px}

/* support list */
.checks{list-style:none;padding:0;margin:0 0 24px;display:grid;gap:10px}
.checks li{background:#fff;border-radius:12px;padding:14px 16px 14px 46px;position:relative;border:1px solid var(--line)}
.checks li::before{content:"";position:absolute;left:16px;top:18px;width:18px;height:18px;border-radius:50%;background:var(--turq-l);box-shadow:inset 0 0 0 5px var(--turq)}

/* faq */
.faq details{border-bottom:1px solid var(--line);padding:6px 0}
.faq summary{cursor:pointer;font-weight:700;padding:14px 32px 14px 0;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q.";color:var(--turq);margin-right:8px;font-family:serif}
.faq summary::after{content:"+";position:absolute;right:4px;top:10px;font-size:22px;color:var(--turq)}
.faq details[open] summary::after{content:"−"}
.faq .a{padding:0 0 16px 26px;color:var(--ink)}

/* rules */
.rules h2{font-size:22px;margin-top:48px;color:var(--sea-deep)}
.rules h3{font-size:17px;margin:28px 0 6px;font-family:inherit;font-weight:700}
.rules table{border-collapse:collapse;margin:8px 0}
.rules td{border:1px solid var(--line);padding:8px 16px}
.note{background:var(--turq-l);border-radius:12px;padding:14px 18px;font-size:14px}

/* reserve band */
.reserve{background:linear-gradient(135deg,var(--sea-deep),var(--sea));color:#fff;text-align:center}
.reserve h2{margin:.2em 0}
.reserve p{opacity:.92}
.reserve .btns{justify-content:center;margin-top:22px}
.reserve .btn-ota{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.4)}

/* form */
.form{display:grid;gap:16px;max-width:640px;margin:0 auto}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:520px){.form .row{grid-template-columns:1fr}}
.form label{display:block;font-size:14px;font-weight:700;margin-bottom:6px}
.form input,.form textarea,.form select{width:100%;padding:12px 14px;border:1px solid #c9d2d5;border-radius:10px;font:inherit;background:#fff}
.form textarea{min-height:160px}
.form .hp{display:none}
.form button{justify-self:center;border:0;cursor:pointer}
.req{color:#c0392b;font-size:12px;margin-left:4px}

/* footer */
.ft{background:var(--sea-deep);color:#cfe3e8;padding:48px 0 24px;font-size:14px}
.ft a{color:#fff;text-decoration:none}
.ft .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.ft ul{list-style:none;padding:0;margin:0;display:grid;gap:6px}
.ft .logo{height:40px;width:auto;filter:brightness(0) invert(1);margin-bottom:10px}
.ft .copy{border-top:1px solid rgba(255,255,255,.15);margin-top:32px;padding-top:16px;text-align:center;font-size:12px;opacity:.75}
@media (max-width:760px){.ft .cols{grid-template-columns:1fr}}

.float-line{position:fixed;right:14px;bottom:14px;z-index:60;display:none;background:var(--line-green);color:#fff;text-decoration:none;font-weight:700;padding:12px 18px;border-radius:40px;box-shadow:0 6px 18px rgba(0,0,0,.25);font-size:14px}
@media (max-width:520px){.float-line{display:block}}
.fade{opacity:0;transform:translateY(18px);transition:opacity .8s,transform .8s}
.fade.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.fade{opacity:1;transform:none}.hero video{display:none}}
@media (max-width:520px){body{padding-bottom:64px}}
.facts-3{grid-template-columns:repeat(3,1fr)}@media (max-width:820px){.facts-3{grid-template-columns:1fr 1fr}}@media (max-width:520px){.facts-3{grid-template-columns:1fr}}

/* ===== ヘッダー：ティファニーブルー版（全ページ共通） ===== */
.hd-turq{--hd-bg:#85ccc6;--hd-ink:#0a3d47;background:var(--hd-bg);border-bottom:0;box-shadow:0 2px 14px rgba(10,61,71,.15)}
.hd-turq .brand{color:var(--hd-ink)}
.hd-turq .brand img{filter:brightness(0) saturate(100%) invert(17%) sepia(31%) saturate(1500%) hue-rotate(152deg) brightness(92%)}
.hd-turq .nav a{color:var(--hd-ink);font-weight:700;padding-bottom:2px;border-bottom:2px solid transparent}
.hd-turq .nav a:hover,.hd-turq .nav a[aria-current]{color:var(--hd-ink);border-bottom-color:#fff}
.hd-turq .lang a{color:var(--hd-ink)}
.hd-turq .lang a[aria-current]{background:#fff;color:var(--hd-ink)}
.hd-turq .menu-btn span{background:var(--hd-ink)}
@media (max-width:980px){
  .hd-turq .nav{background:var(--hd-bg);border-bottom:0}
  .hd-turq .nav a{border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:12px}
  .hd-turq .nav a[aria-current]{background:rgba(255,255,255,.35)}
}
/* ===== フッター：ティファニーブルー版（全ページ共通） ===== */
.ft-turq{--ft-bg:#85ccc6;--ft-ink:#0a3d47;background:var(--ft-bg);color:var(--ft-ink)}
.ft-turq a{color:var(--ft-ink);font-weight:700}
.ft-turq a:hover{text-decoration:underline}
.ft-turq b{color:var(--ft-ink)!important}
.ft-turq .logo{filter:brightness(0) saturate(100%) invert(17%) sepia(31%) saturate(1500%) hue-rotate(152deg) brightness(92%)}
.ft-turq .copy{border-top-color:rgba(10,61,71,.25);opacity:.85}
/* TOPのヒーローは縦幅を2/3にして、宿泊施設がファーストビューに入るようにする */
.hero-home{height:min(59vh,507px);min-height:300px}
.hero-home .in{padding-bottom:36px}
.hero-home h1{margin:.1em 0 .2em}
.hero-home p.lead{margin-bottom:16px}
.hero-home + #stay{padding-top:48px}
/* ヘッダー：恩納村を2リンクに分けたぶんの調整 */
.hd .wrap{max-width:1320px}
.brand,.lang,.btn-line-s{flex-shrink:0}
.lang a{white-space:nowrap}
.nav{gap:16px}
.nav a{font-size:13.5px}
@media (max-width:1180px){
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid var(--line);padding:8px 16px 16px}
  .nav.open{display:flex}
  .nav a{padding:12px 4px;border-bottom:1px solid var(--line);font-size:15px}
  .menu-btn{display:block}
  .hd-turq .nav{background:var(--hd-bg);border-bottom:0}
  .hd-turq .nav a{border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:12px}
  .hd-turq .nav a[aria-current]{background:rgba(255,255,255,.35)}
}
/* ヒーローの縦幅をさらに2/3に（全ページ） */
.hero-home{height:min(39vh,338px);min-height:280px}
.hero-home .in{padding-bottom:28px}
.page-hero{height:min(40vh,347px);min-height:260px}
.page-hero .in{padding-bottom:32px}
.hero h1{font-size:clamp(26px,4.6vw,46px)}
.page-hero p.lead{margin-bottom:0}
@media (max-width:520px){.hero p.lead{font-size:14px;line-height:1.7}.hero .btns .btn{padding:10px 18px;font-size:14px}}
.hero-home .in,.page-hero .in{justify-content:center;padding-top:20px;padding-bottom:20px}
.hero .kicker{margin:0 0 4px}
/* フッター：宿ごとの Airbnb / Booking.com リンク */
.ft-ota{display:grid;grid-template-columns:auto auto auto;justify-content:start;column-gap:18px;row-gap:6px;align-items:baseline;margin:0 0 16px;font-size:14px}
.ft-ota .nm{padding-right:6px}
.ft-ota a{font-size:13px}
@media (max-width:360px){.ft-ota{column-gap:12px}.ft-ota .nm{grid-column:1/-1;padding-right:0;margin-top:4px}}
@media (max-width:420px){.ft-ota{column-gap:12px;font-size:13px}.ft-ota .nm{padding-right:0}}