:root{
    --cream:#f7f1e6; --cream-2:#efe5d2; --paper:#fffaf2;
    --ink:#2b2420; --ink-2:#5c4f45; --muted:#8a7b6e;
    --terra:#b5542f; --terra-dk:#8f3f20; --gold:#c9a24e; --steam:#d9c7ad;
    --wa:#25d366;
    --serif:"Shippori Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
    --sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
    --maxw:1120px; --r:14px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:var(--sans);color:var(--ink);background:var(--cream);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased}
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.35;letter-spacing:.02em}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
  section{padding:88px 0}
  .eyebrow{font-size:12px;letter-spacing:.3em;color:var(--terra);font-weight:700;text-transform:uppercase;margin-bottom:12px}
  h2{font-size:clamp(26px,3.4vw,38px);margin-bottom:16px}
  .lead{color:var(--ink-2);max-width:640px;margin-bottom:40px}
  .btn{display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:999px;font-weight:700;font-size:15px;transition:.2s;border:2px solid transparent}
  .btn-primary{background:var(--terra);color:#fff}
  .btn-primary:hover{background:var(--terra-dk)}
  .btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
  .btn-ghost:hover{background:var(--ink);color:var(--cream)}
  .btn-wa{background:var(--wa);color:#fff}
  .btn-wa:hover{filter:brightness(.92)}
  .btn svg{width:18px;height:18px;fill:currentColor}

  /* header */
  header{position:sticky;top:0;z-index:50;background:rgba(247,241,230,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--steam)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px;white-space:nowrap}
  .logo{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;font-size:20px;letter-spacing:.06em;flex-shrink:0}
  .logo img{height:36px}
  .logo span{font-size:11px;letter-spacing:.12em;white-space:nowrap;color:var(--muted);font-family:var(--sans);font-weight:500}
  .menu{display:flex;gap:22px;font-size:14px;font-weight:500;margin-left:auto}
  .menu a:hover{color:var(--terra)}
  .nav .btn{padding:10px 18px;font-size:14px;flex-shrink:0}
  .lang{display:flex;gap:4px;margin-left:8px;font-size:12px;font-weight:700;letter-spacing:.05em;flex-shrink:0}
  .lang a,.lang span{padding:6px 9px;border-radius:999px;border:1px solid var(--steam);color:var(--ink-2)}
  .lang span{background:var(--ink);color:var(--cream);border-color:var(--ink)}
  .lang a:hover{border-color:var(--ink);color:var(--ink)}
  @media(max-width:1180px){.logo span{display:none}.menu{gap:16px;font-size:13px}}
  @media(max-width:1000px){.menu{display:none}}
  @media(max-width:640px){
    .nav{height:60px;gap:8px}
    .logo img{height:32px}
    .logo b{display:none}
    .lang{margin-left:auto;gap:3px}
    .lang a,.lang span{padding:5px 8px;font-size:11px}
    .nav .btn{padding:8px 12px;font-size:12px}
    .hero .eyebrow{letter-spacing:.15em;font-size:11px}
    .hero h1{font-size:34px}
    .hero p{font-size:15px}
  }
  @media(max-width:400px){.nav .btn{display:none}}

  /* hero */
  .hero{position:relative;min-height:88vh;display:flex;align-items:center;color:#fff;overflow:hidden}
  .hero-bg{position:absolute;inset:0;background:url("/assets/hero-onsen-warm.jpg") center/cover no-repeat,radial-gradient(ellipse at 70% 40%,#7a4a2e 0%,#3b2a22 60%,#241b16 100%);transform:scale(1.02)}
  .hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(43,36,32,.82) 0%,rgba(43,36,32,.55) 55%,rgba(43,36,32,.25) 100%)}
  .hero .wrap{position:relative;padding-top:80px;padding-bottom:80px}
  .hero .eyebrow{color:var(--gold)}
  .hero h1{font-size:clamp(34px,5.2vw,62px);font-weight:700;margin-bottom:22px;text-shadow:0 2px 20px rgba(0,0,0,.3)}
  .hero p{max-width:560px;font-size:17px;color:#f3eadc;margin-bottom:34px}
  .hero-cta{display:flex;gap:14px;flex-wrap:wrap}
  .hero .btn-ghost{border-color:#fff;color:#fff}
  .hero .btn-ghost:hover{background:#fff;color:var(--ink)}
  .hero-points{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.18);margin-top:60px;border-radius:var(--r);overflow:hidden;backdrop-filter:blur(6px)}
  .hero-points div{background:rgba(43,36,32,.45);padding:18px 20px}
  .hero-points b{display:block;font-family:var(--serif);font-size:22px;color:var(--gold)}
  .hero-points small{font-size:13px;color:#eadfcd}
  @media(max-width:760px){.hero-points{grid-template-columns:repeat(2,1fr)}}

  /* intro */
  .intro{background:var(--paper)}
  .intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
  .ph{border-radius:var(--r);aspect-ratio:4/3;overflow:hidden;background:linear-gradient(135deg,#c98a5a,#7a4a2e 60%,#3b2a22);box-shadow:0 30px 60px -30px rgba(43,36,32,.45)}
  .ph img{width:100%;height:100%;object-fit:cover}
  .intro p{color:var(--ink-2);margin-bottom:16px}
  .intro .note{font-size:13px;color:var(--muted);border-left:3px solid var(--gold);padding-left:14px;margin-top:24px}
  @media(max-width:860px){.intro-grid{grid-template-columns:1fr;gap:32px}}

  /* packages */
  .pk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .pk{background:var(--paper);border:1px solid var(--steam);border-radius:var(--r);padding:30px 28px;display:flex;flex-direction:column;position:relative}
  .pk.hot{border-color:var(--terra);box-shadow:0 20px 40px -24px rgba(181,84,47,.5)}
  .pk .tag{position:absolute;top:-12px;left:24px;background:var(--terra);color:#fff;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;letter-spacing:.1em}
  .pk h3{font-size:21px;margin-bottom:6px}
  .pk .sub{font-size:13px;color:var(--muted);margin-bottom:18px}
  .price{font-family:var(--serif);font-size:34px;font-weight:700;color:var(--terra);line-height:1.1}
  .price small{font-size:14px;color:var(--muted);font-family:var(--sans);font-weight:500}
  .price-row{display:flex;gap:18px;margin:10px 0 18px;flex-wrap:wrap}
  .price-row div{font-size:13px;color:var(--ink-2)}
  .price-row b{display:block;font-family:var(--serif);font-size:22px;color:var(--ink)}
  .pk ul{list-style:none;margin:0 0 24px;flex:1}
  .pk li{padding:6px 0 6px 26px;position:relative;font-size:14.5px;color:var(--ink-2);border-bottom:1px dashed var(--steam)}
  .pk li::before{content:"";position:absolute;left:4px;top:15px;width:10px;height:10px;border-radius:50%;background:var(--gold)}
  .pk .btn{justify-content:center}
  .pk-note{margin-top:28px;font-size:13.5px;color:var(--muted);background:var(--cream-2);padding:16px 20px;border-radius:10px}
  @media(max-width:900px){.pk-grid{grid-template-columns:1fr}}

  /* facilities */
  .fac{background:var(--ink);color:var(--cream)}
  .fac .eyebrow{color:var(--gold)}
  .fac .lead{color:#cdbfae}
  .fac-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
  .fac-card{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:3/4;background:linear-gradient(160deg,#6e4630,#3a302a 70%)}
  .fac-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
  .fac-card:hover img{transform:scale(1.05)}
  .fac-card .cap{position:absolute;inset:auto 0 0 0;padding:60px 18px 18px;background:linear-gradient(0deg,rgba(20,15,12,.92),rgba(20,15,12,0))}
  .fac-card h3{font-size:17px;margin-bottom:4px;color:#fff}
  .fac-card p{font-size:12.5px;color:#d9ccba;line-height:1.6}
  @media(max-width:900px){.fac-grid{grid-template-columns:repeat(2,1fr)}}

  /* flow */
  .flow{background:var(--paper)}
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
  .step{background:var(--cream);border-radius:var(--r);padding:28px 24px;position:relative}
  .step::before{counter-increment:s;content:"0" counter(s);font-family:var(--serif);font-size:40px;color:var(--gold);line-height:1;display:block;margin-bottom:12px}
  .step h3{font-size:18px;margin-bottom:8px}
  .step p{font-size:14px;color:var(--ink-2)}
  @media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:560px){.steps{grid-template-columns:1fr}}
  .who-grid{grid-template-columns:repeat(3,1fr)}
  @media(max-width:900px){.who-grid{grid-template-columns:1fr}}

  /* treatments */
  .tx-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:0 0 32px}
  .tx-grid figure{margin:0;border-radius:var(--r);overflow:hidden}
  .tx-grid img{width:100%;aspect-ratio:4/3;object-fit:cover}
  .tx-grid figcaption{font-size:13px;color:var(--ink-2);padding:12px 14px;line-height:1.6}
  @media(max-width:860px){.tx-grid{grid-template-columns:1fr}}
  table{width:100%;border-collapse:collapse;background:var(--paper);border-radius:var(--r);overflow:hidden;font-size:14.5px}
  th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--steam)}
  th{background:var(--cream-2);font-weight:700;font-size:13px;letter-spacing:.05em}
  td.p{font-family:var(--serif);font-weight:600;color:var(--terra);white-space:nowrap}
  tr:last-child td{border-bottom:0}
  .tbl-note{font-size:13px;color:var(--muted);margin-top:14px}

  /* faq */
  .faq{background:var(--paper)}
  details{border-bottom:1px solid var(--steam);padding:6px 0}
  summary{cursor:pointer;font-weight:700;padding:16px 36px 16px 0;position:relative;list-style:none;font-size:16px}
  summary::-webkit-details-marker{display:none}
  summary::after{content:"+";position:absolute;right:4px;top:12px;font-size:24px;color:var(--terra);font-weight:400}
  details[open] summary::after{content:"−"}
  details p{padding:0 0 18px;color:var(--ink-2);font-size:15px}
  .faq-cols{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
  @media(max-width:860px){.faq-cols{grid-template-columns:1fr}}

  /* access */
  .access-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
  .access dl{display:grid;grid-template-columns:110px 1fr;gap:10px 16px;font-size:15px}
  .access dt{color:var(--muted);font-size:13px;padding-top:3px}
  .access dd a{color:var(--terra);font-weight:700}
  .map{border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;border:1px solid var(--steam)}
  .map iframe{width:100%;height:100%;border:0}
  .alert{margin-top:22px;background:#fdf1ea;border:1px solid #f0cdbb;border-radius:10px;padding:14px 18px;font-size:13.5px;color:var(--terra-dk)}
  @media(max-width:860px){.access-grid{grid-template-columns:1fr}}

  /* cta band */
  .band{background:linear-gradient(135deg,var(--terra) 0%,var(--terra-dk) 100%);color:#fff;text-align:center;padding:80px 0}
  .band h2{color:#fff;margin-bottom:12px}
  .band p{color:#f6e3d8;margin-bottom:30px}
  .band .btn-ghost{border-color:#fff;color:#fff}
  .band .btn-ghost:hover{background:#fff;color:var(--terra)}

  footer{background:var(--ink);color:#bfb1a0;padding:56px 0 32px;font-size:13.5px}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:40px}
  footer h4{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.1em}
  footer li{list-style:none;margin-bottom:8px}
  footer a:hover{color:#fff}
  .copy{border-top:1px solid #4a3f37;padding-top:22px;font-size:12px;color:#8a7b6e;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
  @media(max-width:760px){.foot-grid{grid-template-columns:1fr}}

  /* floating WA */
  .fab{position:fixed;right:18px;bottom:18px;z-index:60;background:var(--wa);color:#fff;border-radius:999px;padding:12px 18px 12px 14px;display:flex;align-items:center;gap:8px;font-weight:700;font-size:14px;box-shadow:0 10px 30px -10px rgba(0,0,0,.4)}
  .fab svg{width:22px;height:22px;fill:#fff}
  /* notice card in hero */
  .hero .wrap.has-notice{display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center}
  .hero .wrap.has-notice .hero-points{grid-column:1/-1}
  .hero-side{display:flex;flex-direction:column;gap:14px}
  .notice-card{display:block;background:#fffaf2;color:#2b2420;border-radius:14px;padding:22px 24px;box-shadow:0 30px 60px -24px rgba(0,0,0,.6);text-decoration:none;font-size:14px;line-height:1.75;border-left:5px solid #c9a24e}
  a.notice-card:hover{background:#fff}
  .nc-title{font-family:var(--serif);font-weight:700;font-size:17px;margin-bottom:8px;color:#8f3f20}
  .nc-body{color:#5c4f45;white-space:normal}
  .nc-meta{margin-top:10px;font-size:12px;color:#8a7b6e;font-weight:700}
  @media(max-width:900px){.hero .wrap.has-notice{grid-template-columns:1fr;gap:28px}.notice-card{padding:18px 20px;font-size:13.5px}}