:root{
  --ink:#16162a; --sub:#5b5b72; --line:#e7e5ef; --bg:#ffffff; --soft:#faf8fc;
  --sakura:#e5487a; --sakura-soft:#fdeef3; --indigo:#2c2a6b; --indigo-soft:#eeeefa;
  --radius:18px; --max:1120px;
  --serif:"Shippori Mincho","Noto Serif JP",Georgia,serif;
  --sans:"Inter","Noto Sans JP",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit}
img,svg{max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;letter-spacing:.14em;font-size:14px}
.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--sakura-soft);display:grid;place-items:center;color:var(--sakura);font-family:var(--serif);font-size:17px}
.nav{display:flex;align-items:center;gap:26px;font-size:14px}
.nav a{text-decoration:none;color:var(--sub)}
.nav a:hover,.nav a[aria-current=page]{color:var(--ink)}
.nav .btn{color:#fff}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;padding:8px 12px;font:inherit}
@media(max-width:860px){
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:18px 24px 24px;border-bottom:1px solid var(--line);gap:16px}
  .nav.open{display:flex}
  .menu-toggle{display:block}
}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:999px;font-weight:600;text-decoration:none;border:1.5px solid transparent;cursor:pointer;font-size:15px;transition:transform .15s,box-shadow .15s;font-family:inherit}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--sakura);color:#fff;box-shadow:0 8px 24px rgba(229,72,122,.28)}
.btn-ghost{background:#fff;color:var(--indigo);border-color:var(--indigo)}
.btn-small{padding:10px 18px;font-size:14px}
.btn[aria-disabled=true]{opacity:.55;cursor:not-allowed;transform:none}

/* sections */
section{padding:88px 0}
.eyebrow{font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--sakura);font-weight:700;margin:0 0 14px}
h1,h2,h3{line-height:1.25;margin:0 0 18px}
h1{font-family:var(--serif);font-size:clamp(36px,5.4vw,64px);font-weight:600;letter-spacing:.01em}
h2{font-family:var(--serif);font-size:clamp(28px,3.4vw,40px);font-weight:600}
h3{font-size:19px}
.lead{font-size:clamp(17px,1.6vw,20px);color:var(--sub);max-width:640px}
.muted{color:var(--sub)}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.soft{background:var(--soft)}

/* hero */
.hero{padding:96px 0 80px;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-art{position:relative;aspect-ratio:1/1;border-radius:28px;background:linear-gradient(160deg,var(--sakura-soft),var(--indigo-soft));display:grid;place-items:center}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-note{margin-top:18px;font-size:14px;color:var(--sub)}
@media(max-width:860px){.hero .wrap{grid-template-columns:1fr}.hero-art{max-width:420px}}

/* pills / features */
.pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;padding:0;list-style:none}
.pills li{background:#fff;border:1px solid var(--line);padding:7px 14px;border-radius:999px;font-size:13px;color:var(--sub)}
.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:960px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:1fr}}
@media(max-width:640px){.grid-4,.grid-2{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card .icon{width:44px;height:44px;border-radius:12px;background:var(--sakura-soft);color:var(--sakura);display:grid;place-items:center;margin-bottom:16px}
.card p{margin:0;color:var(--sub);font-size:15px}

/* pricing */
.plans{display:grid;grid-template-columns:1.25fr 1fr;gap:26px;align-items:stretch;margin-top:44px}
@media(max-width:860px){.plans{grid-template-columns:1fr}}
.plan{border:1px solid var(--line);border-radius:24px;padding:36px;background:#fff;display:flex;flex-direction:column}
.plan.primary{border:2px solid var(--sakura);box-shadow:0 24px 60px rgba(44,42,107,.12);position:relative}
.plan .badge{position:absolute;top:-14px;left:32px;background:var(--sakura);color:#fff;font-size:12px;font-weight:700;letter-spacing:.12em;padding:6px 14px;border-radius:999px}
.plan .name{font-weight:700;font-size:20px;margin-bottom:6px}
.plan .price{font-family:var(--serif);font-size:54px;font-weight:600;line-height:1;margin:16px 0 4px}
.plan .price small{font-family:var(--sans);font-size:16px;color:var(--sub);font-weight:500}
.plan .per{font-size:14px;color:var(--sub);margin-bottom:18px}
.plan ul{list-style:none;padding:0;margin:0 0 26px;display:grid;gap:10px;font-size:15px}
.plan li{display:flex;gap:10px}
.plan li::before{content:"";flex:0 0 18px;height:18px;margin-top:4px;border-radius:50%;background:var(--sakura-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3 3 7-7' fill='none' stroke='%23e5487a' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px no-repeat}
.plan .btn{margin-top:auto}
.plan .terms-line{font-size:12.5px;color:var(--sub);margin-top:14px}
.plan.secondary .price{font-size:42px}
.compare{font-size:14px;color:var(--sub);margin-top:22px;text-align:center}

/* steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
@media(max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{counter-increment:s;padding:24px;border-radius:var(--radius);background:#fff;border:1px solid var(--line)}
.step::before{content:counter(s,decimal-leading-zero);font-family:var(--serif);color:var(--sakura);font-size:26px;display:block;margin-bottom:8px}
.step p{margin:0;color:var(--sub);font-size:15px}

/* message band */
.band{background:var(--indigo);color:#fff;border-radius:28px;padding:56px;text-align:center}
.band h2{color:#fff}
.band p{color:#d8d7f2;max-width:620px;margin:0 auto 26px}
@media(max-width:640px){.band{padding:36px 22px}}

/* instructor */
.instructor{display:grid;grid-template-columns:.8fr 1.2fr;gap:52px;align-items:start}
@media(max-width:860px){.instructor{grid-template-columns:1fr}}
.portrait{aspect-ratio:4/5;border-radius:24px;background:linear-gradient(170deg,var(--indigo-soft),var(--sakura-soft));display:grid;place-items:center;text-align:center;padding:24px}
.portrait .mono{font-family:var(--serif);font-size:64px;color:var(--indigo)}
.portrait .cap{font-size:13px;color:var(--sub);margin-top:8px}
.facts{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:12px}
.facts li{padding:14px 18px;border:1px solid var(--line);border-radius:14px;background:#fff;font-size:15px}

/* faq / terms */
details{border-bottom:1px solid var(--line);padding:20px 0}
details summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
details summary::after{content:"+";color:var(--sakura);font-size:22px;line-height:1}
details[open] summary::after{content:"−"}
details p{color:var(--sub);margin:12px 0 0}
.terms h3{margin-top:34px}
.terms p,.terms li{color:var(--sub)}
.notice{border:1px solid #f3c9d6;background:var(--sakura-soft);border-radius:14px;padding:16px 20px;font-size:14px;color:#7a2a45}

/* checkout dialog */
.dialog-backdrop{position:fixed;inset:0;background:rgba(22,22,42,.48);display:none;align-items:center;justify-content:center;padding:20px;z-index:50}
.dialog-backdrop.open{display:flex}
.dialog{background:#fff;border-radius:22px;max-width:560px;width:100%;padding:32px;max-height:90vh;overflow:auto}
.dialog h3{font-size:22px}
.dialog ul{color:var(--sub);font-size:14.5px;padding-left:20px}
.dialog label{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin:18px 0;cursor:pointer}
.dialog .row{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}

/* booking */
.tz{font-size:14px;color:var(--sub)}
.slot-days{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px;margin-top:20px}
.slot-day{border:1px solid var(--line);border-radius:14px;padding:14px}
.slot-day h4{margin:0 0 10px;font-size:14px}
.slot{display:block;width:100%;margin:6px 0;padding:8px;border-radius:10px;border:1px solid var(--line);background:#fff;font:inherit;font-size:14px;cursor:pointer}
.slot:hover,.slot.sel{border-color:var(--sakura);background:var(--sakura-soft)}
.field{display:grid;gap:6px;margin:14px 0}
.field input,.field textarea,.field select{font:inherit;padding:12px 14px;border:1px solid var(--line);border-radius:12px}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:56px 0 40px;margin-top:40px;font-size:14px;color:var(--sub)}
.site-footer .cols{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:32px}
@media(max-width:760px){.site-footer .cols{grid-template-columns:1fr}}
.site-footer a{text-decoration:none}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.byv{font-weight:700;letter-spacing:.16em;color:var(--ink)}
.byv-ja{font-size:13px}
.legal{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);font-size:12.5px}

/* sticky mobile CTA */
.mobile-cta{display:none}
@media(max-width:860px){
  .mobile-cta{display:flex;position:fixed;left:12px;right:12px;bottom:12px;z-index:30;justify-content:center}
  .mobile-cta .btn{width:100%}
  body{padding-bottom:84px}
}