:root{
  --night:#0f1b33; --night2:#18294a; --snow:#f5f8fb; --ice:#dfe9f2;
  --ink:#16202e; --muted:#5b6b7e; --lamp:#ffb347; --lamp-d:#b86e00; --price:#e0412b;
  --serif:"Shippori Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
  --sans:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:56px}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--snow);line-height:1.8;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--lamp);outline-offset:3px}
.sp{display:none}

/* hero：画像は加工・暗転なし */
.hero{display:block;background:var(--ice)}
.hero img{width:100%;height:auto;aspect-ratio:1920/800;object-fit:cover}
.intro{background:var(--night);color:#fff;text-align:center;padding:36px 20px 44px}
.intro__title{margin:0 0 16px;font-weight:700;font-size:clamp(15px,2vw,20px);color:#cfd9e6}
.intro__from{margin:0;font-family:var(--serif);font-weight:800;font-size:clamp(40px,8vw,88px);line-height:1.2;letter-spacing:.04em}
.intro__period{margin:16px 0 0;display:flex;justify-content:center;align-items:center;gap:16px;flex-wrap:wrap}
.intro__tag{background:var(--lamp);color:var(--night);font-weight:900;font-size:clamp(16px,2.6vw,28px);padding:4px 18px;border-radius:4px}
.intro__date{font-family:var(--serif);font-weight:800;font-size:clamp(32px,6.5vw,68px);line-height:1.2;color:var(--lamp)}
.intro__date small{font-size:.5em;margin:0 .15em}

.btn{display:inline-block;background:var(--lamp);color:var(--night);font-weight:700;text-decoration:none;padding:14px 32px;border-radius:999px;transition:background .2s}
.btn:hover{background:#ffc470}
.btn--line{background:transparent;border:2px solid var(--night)}
.btn--line:hover{background:var(--night);color:#fff}

.subnav{position:sticky;top:0;z-index:10;display:flex;justify-content:center;gap:4px;background:var(--night2);padding:8px 12px;overflow-x:auto}
.subnav a{color:#cfd9e6;text-decoration:none;font-size:14px;font-weight:500;padding:6px 16px;border-radius:999px;white-space:nowrap}
.subnav a:hover{background:var(--night);color:#fff}

.sec{max-width:1080px;margin:0 auto;padding:88px 24px}
.sec--night,.sec--ice{max-width:none;padding-left:max(24px,calc((100% - 1032px)/2));padding-right:max(24px,calc((100% - 1032px)/2))}
.sec--night{background:var(--night);color:#fff}
.sec--ice{background:var(--ice)}
.sec h2{font-family:var(--serif);font-size:clamp(28px,4.5vw,44px);line-height:1.35;margin:0 0 12px}
.sec__lead{color:var(--muted);margin:0 0 36px;max-width:38em}
.sec--night .sec__lead{color:#b9c6d8}

/* resort blocks */
.resort{padding:48px 0;border-top:2px solid var(--night)}
.resort:first-child{border-top:0;padding-top:0}
.resort__top{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:start}
.gallery__main{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:8px;background:var(--ice)}
.gallery__thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:8px}
.gallery__thumbs button{padding:0;border:2px solid transparent;border-radius:4px;overflow:hidden;cursor:pointer;background:none;opacity:.6}
.gallery__thumbs button[aria-current="true"]{border-color:var(--lamp-d);opacity:1}
.gallery__thumbs img{aspect-ratio:3/2;object-fit:cover;width:100%}
.resort h3{font-family:var(--serif);font-size:clamp(24px,3.4vw,32px);line-height:1.35;margin:0 0 6px}
.resort__tag{margin:0 0 14px;color:var(--lamp-d);font-weight:700}
.resort__btn{margin-top:8px}

.data{margin:20px 0 0;border-top:1px solid var(--ice)}
.data div{display:grid;grid-template-columns:7em 1fr;gap:12px;padding:8px 0;border-bottom:1px solid var(--ice);font-size:15px}
.data dt{color:var(--muted);font-weight:700}
.data dd{margin:0}
.data--wide{margin-top:0}
.meter{margin-top:28px}
.meter h4{margin:0 0 12px;font-size:16px}
.meter__group{display:grid;grid-template-columns:4em 1fr;gap:4px 12px;align-items:center;margin-bottom:10px}
.meter__label{font-weight:700;grid-row:span 2}
.meter__row{display:flex;align-items:center;gap:8px;font-size:13px}
.meter__bar{flex:1;height:14px;background:var(--ice);border-radius:2px;overflow:hidden}
.meter__bar span{display:block;height:100%;width:0;background:var(--night2);transition:width .9s ease}
.meter__row:nth-of-type(2) .meter__bar span{background:var(--lamp)}
.meter__row b{min-width:3em;text-align:right;font-family:var(--serif);font-size:16px}
.meter__name{width:9em;color:var(--muted);font-size:12px}
.resort__data{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:40px}

/* plan slider */
.plans{margin-top:40px;background:var(--night);color:#fff;border-radius:10px;padding:28px 0 28px 28px;position:relative}
.plans__head{display:flex;justify-content:space-between;align-items:center;padding-right:28px;margin-bottom:18px}
.plans__head h4{margin:0;font-family:var(--serif);font-size:22px}
.plans__nav button{width:40px;height:40px;border-radius:50%;border:0;background:var(--lamp);color:var(--night);font-size:18px;font-weight:900;cursor:pointer;margin-left:6px}
.plans__track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-right:28px;padding-bottom:6px;scrollbar-width:thin}
.card{flex:0 0 min(340px,82%);scroll-snap-align:start;background:#fff;color:var(--ink);border-radius:8px;overflow:hidden;display:flex;flex-direction:column;text-decoration:none}
.card img{aspect-ratio:3/2;object-fit:cover;width:100%}
.card__body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.card__name{font-weight:700;line-height:1.5;margin:0}
.card__price{margin:auto 0 0;color:var(--price);font-family:var(--serif);font-weight:800;line-height:1.1;display:flex;flex-direction:column;gap:4px}
.card__range{display:flex;align-items:baseline;flex-wrap:wrap;column-gap:2px}
.card__range strong{font-size:40px;letter-spacing:-.01em}
.card__range small{font-size:18px;font-family:var(--sans);font-weight:900}
.card__to{font-size:22px;margin:0 6px}
.card__price em{font-style:normal;font-size:13px;color:var(--muted);font-family:var(--sans);font-weight:500}
.card__cta{background:var(--price);color:#fff;text-align:center;font-weight:700;padding:10px;border-radius:4px;margin-top:8px}
.card:hover .card__cta{background:#c43420}

/* night */
.route__bus{width:100%;aspect-ratio:16/8;object-fit:cover;border-radius:10px;margin-bottom:36px}
.seg{display:inline-flex;background:var(--night2);border-radius:999px;padding:4px;margin-bottom:28px;flex-wrap:wrap}
.seg__btn{font:inherit;font-weight:700;border:0;cursor:pointer;color:#b9c6d8;background:transparent;padding:10px 22px;border-radius:999px}
.seg__btn.is-on{background:var(--lamp);color:var(--night)}
.times{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.time{border:1px solid #33486e;border-radius:8px;padding:24px;display:flex;flex-direction:column;gap:8px}
.time--main{background:var(--night2);border-color:var(--lamp)}
.time__place{font-size:14px;color:#cfd9e6}
.time__clock{font-family:var(--serif);font-size:56px;font-weight:800;line-height:1.1;color:var(--lamp)}
.time a{font-size:14px;color:#fff}

/* seat / bus */
.seat{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.seat img{border-radius:8px;width:100%;aspect-ratio:3/2;object-fit:cover}
.bar{margin-bottom:22px}
.bar p{margin:0 0 6px;font-weight:700}
.bar__row{display:flex;align-items:center;gap:12px;margin-bottom:4px}
.bar__fill{display:block;height:14px;width:0;background:var(--ice);border-radius:2px;transition:width 1s ease}
.bar__fill--on{background:var(--lamp)}
.bar__row b{font-family:var(--serif);font-size:20px}
.bar__row i{font-style:normal;font-size:13px;color:var(--muted)}
.checks{margin:32px 0 28px;padding:0;list-style:none;display:grid;gap:10px}
.checks--tight{margin:16px 0 0}
.checks li{padding-left:28px;position:relative}
.checks li::before{content:"✓";position:absolute;left:0;color:var(--lamp-d);font-weight:900}
.strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px}
.strip--2{grid-template-columns:1fr 1fr}
.strip img{aspect-ratio:3/2;object-fit:cover;width:100%;border-radius:6px}
.about{margin-top:64px;background:var(--ice);border-radius:10px;padding:32px}
.about h3{font-family:var(--serif);font-size:28px;margin:0 0 20px}
.about__grid{display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:center}

/* faq */
.faq{display:grid;gap:10px;max-width:820px}
.faq details{background:#fff;border-radius:8px}
.faq summary{cursor:pointer;list-style:none;padding:18px 52px 18px 56px;font-weight:700;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";position:absolute;left:18px;top:14px;width:28px;height:28px;border-radius:50%;background:var(--night);color:#fff;text-align:center;line-height:28px;font-size:14px}
.faq summary::after{content:"+";position:absolute;right:20px;top:14px;font-size:24px;line-height:1.2;color:var(--lamp-d)}
.faq details[open] summary::after{content:"−"}
.faq__a{padding:0 24px 20px 56px;color:#2d3a4b}
.faq__a p{margin:0 0 8px}
.faq__a a{color:var(--lamp-d)}
.faq__more{margin-top:28px}

.foot{background:var(--night);color:#fff;text-align:center;padding:64px 24px}
.foot__big{font-family:var(--serif);font-weight:800;font-size:clamp(22px,4vw,36px);margin:0 0 24px;color:var(--lamp)}
.foot__small{font-size:12px;color:#8fa0b8;margin:24px 0 0}

@media (max-width:820px){
  .sp{display:inline}
  .hero img{aspect-ratio:750/900}
  .resort__top,.resort__data,.seat,.about__grid{grid-template-columns:1fr}
  .sec{padding-top:64px;padding-bottom:64px}
  .time__clock{font-size:44px}
  .plans{padding:22px 0 22px 16px}
  .about{padding:20px}
  .data div{grid-template-columns:6em 1fr}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.bar__fill,.meter__bar span{transition:none}}

/* search */
.search{background:#fff;color:var(--ink);max-width:1080px;margin:-28px auto 0;position:relative;z-index:2;border-radius:10px;padding:24px 28px 28px;box-shadow:0 6px 24px rgba(15,27,51,.18)}
.top-visual{padding:0 20px 48px;background:var(--snow)}
.hero,.intro{margin-left:-20px;margin-right:-20px}
.search__title{margin:0 0 16px;font-family:var(--serif);font-size:22px}
.search__grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px 14px}
.field{display:flex;flex-direction:column;gap:4px;grid-column:span 2;min-width:0}
.field--wide{grid-column:span 2}
.field span{font-size:13px;font-weight:700;color:var(--muted)}
.field select{font:inherit;font-size:16px;width:100%;min-height:46px;padding:8px 12px;border:1px solid #b9c6d8;border-radius:6px;background:#fff;color:var(--ink)}
.search__btn{display:block;width:100%;max-width:360px;margin:20px auto 0;border:0;font:inherit;font-weight:700;font-size:17px;cursor:pointer;min-height:52px}

/* videos */
.videos{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.video__thumb,.video iframe{display:block;width:100%;aspect-ratio:16/9;border:0;border-radius:8px;background:#000}
.video__thumb{position:relative;padding:0;cursor:pointer;overflow:hidden}
.video__thumb img{width:100%;height:100%;object-fit:cover}
.video__play{position:absolute;left:50%;top:50%;width:64px;height:44px;margin:-22px 0 0 -32px;background:#e0412b;border-radius:12px}
.video__play::after{content:"";position:absolute;left:26px;top:13px;border-style:solid;border-width:9px 0 9px 15px;border-color:transparent transparent transparent #fff}
.video__title{margin:10px 0 0;font-weight:700;font-size:15px;line-height:1.6}
.video__more{margin-top:32px;text-align:center}

@media (max-width:1000px){.videos{grid-template-columns:1fr 1fr}}
@media (max-width:820px){
  .top-visual{padding:0 12px 36px}
  .hero,.intro{margin-left:-12px;margin-right:-12px}
  .search{padding:20px 16px 22px;margin-top:-20px}
  .search__grid{grid-template-columns:1fr 1fr}
  .field,.field--wide{grid-column:span 1}
  .field--wide{grid-column:span 2}
  .search__btn{max-width:none}
  .videos{grid-template-columns:1fr}
  .btn{padding:14px 24px}
  .resort__btn,.foot .btn,.video__more .btn,.faq__more .btn{display:block;width:100%;text-align:center}
  .seg{display:flex;width:100%;border-radius:12px}
  .seg__btn{flex:1 1 100%;border-radius:10px;min-height:46px}
  .subnav{justify-content:flex-start}
  .meter__group{grid-template-columns:3.5em 1fr}
  .meter__name{width:100%;font-size:12px}
  .meter__row{flex-wrap:wrap;gap:2px 8px}
  .meter__row .meter__bar{flex:1 1 60%}
  .card__range strong{font-size:34px}
  .card__range small{font-size:16px}
  .card__to{font-size:18px;margin:0 4px}
  .plans__head h4{font-size:19px}
  .route__bus{aspect-ratio:3/2}
  .intro{padding:28px 16px 40px}
  .faq summary{padding:16px 44px 16px 52px}
  .faq__a{padding:0 18px 18px 52px}
}
@media (max-width:420px){
  .search__grid{grid-template-columns:1fr}
  .field,.field--wide{grid-column:span 1}
}

/* site header */
.site-header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--ice)}
.site-header__inner{max-width:1200px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:16px}
.site-header__logo{margin-right:auto;display:block}
.site-header__logo img{height:44px;width:auto}
.site-header__navi{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.site-header__navi a{display:block;padding:8px 12px;font-size:14px;font-weight:700;text-decoration:none;border-radius:6px}
.site-header__navi a:hover{background:var(--ice)}
.menu-btn{font:inherit;display:flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;background:var(--night);color:#fff;border:0;border-radius:6px;cursor:pointer;font-weight:700;font-size:14px}
.menu-btn__bars{display:grid;gap:4px}
.menu-btn__bars span{display:block;width:18px;height:2px;background:#fff}
.site-menu{position:absolute;left:0;right:0;top:100%;background:var(--night);color:#fff;box-shadow:0 12px 24px rgba(0,0,0,.25);max-height:80vh;overflow-y:auto}
.site-menu[hidden]{display:none}
.site-menu__list{list-style:none;margin:0 auto;padding:8px 20px 16px;max-width:1200px}
.site-menu__list>li{border-bottom:1px solid #2b3d62}
.site-menu a,.site-menu summary{display:block;padding:14px 4px;color:#fff;text-decoration:none;font-weight:500}
.site-menu summary{cursor:pointer;list-style:none;position:relative}
.site-menu summary::-webkit-details-marker{display:none}
.site-menu summary::after{content:"＋";position:absolute;right:4px}
.site-menu details[open] summary::after{content:"－"}
.site-menu details a{padding:10px 4px 10px 20px;font-size:14px;color:#cfd9e6}
.site-menu__mobile{display:none}
.site-menu a:hover,.site-menu summary:hover{color:var(--lamp)}

/* site footer */
.site-footer{background:#fff;color:var(--ink);text-align:center;padding:0 20px 28px;font-size:14px}
.site-footer__top{display:block;margin:0 -20px 28px;padding:12px;background:var(--ice);text-decoration:none;font-weight:700;color:var(--night)}
.site-footer ul{list-style:none;margin:0 auto 20px;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:6px 20px;max-width:900px}
.site-footer a{text-decoration:none}
.site-footer ul a{display:block;padding:6px 4px}
.site-footer ul a:hover{text-decoration:underline}
.site-footer__areas a{font-weight:700}
.site-footer__banners{display:flex;justify-content:center;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.site-footer__banners img{height:56px;width:auto}
.site-footer__corp{margin:0 0 20px;line-height:1.9;font-size:13px}
.site-footer__sns a{border:1px solid #b9c6d8;border-radius:999px;padding:6px 14px!important;font-size:13px}
.site-footer__copy{display:block;color:var(--muted)}

@media (max-width:820px){
  .site-header__inner{padding:8px 12px;gap:8px}
  .site-header__logo img{height:32px}
  .site-header__navi{display:none}
  .menu-btn{padding:0 10px}
  .menu-btn__text{display:none}
  .site-footer__top{margin:0 -20px 20px}
  .site-footer ul{gap:0 14px}
}


@media (max-width:820px){.site-menu__mobile{display:list-item}}
body{overflow-x:clip}

.sec--tight{padding-bottom:0}
.summary{margin:20px 0 0;border-top:2px solid var(--night)}
.summary div{display:grid;grid-template-columns:8em 1fr;gap:16px;padding:12px 0;border-bottom:1px solid var(--ice)}
.summary dt{font-weight:700;color:var(--night)}
.summary dd{margin:0}
@media (max-width:820px){.summary div{grid-template-columns:6em 1fr;gap:10px}.sec--tight{padding-bottom:0}}

.card__kind{margin:0;font-size:12px;font-weight:700;color:var(--lamp-d)}
.card__price{gap:10px}
.card__nights{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--ice);padding-top:8px}
.card__n{align-self:flex-start;background:var(--night);color:#fff;font-family:var(--sans);font-size:12px;font-weight:700;padding:1px 10px;border-radius:999px}
.card__range strong{font-size:30px}
@media (max-width:820px){.card__range strong{font-size:25px}.card__range small{font-size:14px}.card__to{font-size:15px;margin:0 3px}}