*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --stone:#e8e4df;--ink:#2a2826;--moss:#5c6b5a;--paper:#f5f3ef;
  --font-min:'Zen Old Mincho',serif;--font-gothic:'Zen Maru Gothic',sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font-gothic);background:var(--paper);color:var(--ink);line-height:1.75}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--moss)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

.split-layout{display:flex;min-height:100vh}
.split-left{
  position:sticky;top:0;width:38%;min-width:280px;height:100vh;
  padding:3rem 2.5rem;display:flex;flex-direction:column;
  background:var(--stone);border-right:1px solid rgba(42,40,38,.08);
}
.zen-mark{
  font-family:var(--font-min);font-size:4rem;line-height:1;color:var(--moss);
  opacity:.25;margin-bottom:1rem;
}
.split-left h1{font-family:var(--font-min);font-size:clamp(1.8rem,3vw,2.4rem);font-weight:600;line-height:1.4;margin-bottom:1rem}
.intro{font-size:.9rem;opacity:.8;margin-bottom:2rem;max-width:280px}
.vertical-links{display:flex;flex-direction:column;gap:.6rem;margin-top:auto}
.vertical-links a{
  text-decoration:none;color:var(--ink);font-size:.95rem;padding:.4rem 0;
  border-bottom:1px solid transparent;transition:border-color .2s;
}
.vertical-links a:hover{border-color:var(--moss)}
.scroll-hint{font-size:.75rem;opacity:.4;margin-top:2rem}

.split-right{flex:1;overflow-y:auto}

.fullscreen-hero{position:relative;height:70vh;min-height:400px}
.fullscreen-hero img{width:100%;height:100%;object-fit:cover;filter:brightness(.92)}
.hero-overlay{
  position:absolute;bottom:2rem;left:2rem;color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.4);
}
.hero-overlay span{letter-spacing:.3em;font-size:.75rem}
.hero-overlay p{font-family:var(--font-min);font-size:1.2rem;margin-top:.5rem}

.card-stack-section{padding:4rem 2rem;min-height:80vh;display:flex;flex-direction:column;align-items:center}
.card-stack{position:relative;width:min(420px,90vw);height:520px}
.stack-card{
  position:absolute;inset:0;background:#fff;border-radius:2px;
  box-shadow:0 12px 40px rgba(42,40,38,.12);overflow:hidden;
  transform:scale(.92) translateY(30px);opacity:0;transition:all .5s cubic-bezier(.4,0,.2,1);
  pointer-events:none;
}
.stack-card.active{
  transform:scale(1) translateY(0);opacity:1;z-index:4;pointer-events:auto;
}
.stack-card:nth-child(2).active ~ .stack-card,
.stack-card.active ~ .stack-card{opacity:0}
.stack-card img{width:100%;height:55%;object-fit:cover}
.stack-info{padding:1.5rem}
.stack-info h3{font-family:var(--font-min);font-size:1.25rem;margin-bottom:.35rem}
.price{font-weight:600;color:var(--moss);font-size:1.1rem}
.desc{font-size:.85rem;opacity:.7;margin:.5rem 0 1rem}
.zen-btn{
  background:var(--ink);color:#fff;border:none;padding:.65rem 1.5rem;
  cursor:pointer;font-family:inherit;font-size:.9rem;transition:background .2s;
}
.zen-btn:hover{background:var(--moss)}

.stack-dots{display:flex;gap:.5rem;margin-top:2rem}
.stack-dots button{
  width:8px;height:8px;border-radius:50%;border:none;background:#ccc;cursor:pointer;padding:0;
}
.stack-dots button.active{background:var(--moss);transform:scale(1.3)}

.philosophy-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:2rem;padding:3rem 2rem;max-width:900px;
}
.philosophy-grid h2{font-family:var(--font-min);font-size:1.6rem;line-height:1.4;margin-bottom:1rem}
.philosophy-grid > img:first-child{border-radius:2px;height:100%;min-height:280px}
.sub-img{margin-top:1.5rem;border-radius:2px;width:70%}

.legal-zen{
  padding:3rem 2rem 4rem;background:var(--stone);font-size:.88rem;
}
.legal-zen h3,.legal-zen h4{font-family:var(--font-min);margin:1rem 0 .5rem;color:var(--moss)}
.legal-zen dl{display:grid;grid-template-columns:auto 1fr;gap:.3rem .75rem;margin-bottom:1rem}
.note{font-size:.8rem;opacity:.7;margin-top:1rem}
.copy{margin-top:1.5rem;opacity:.5;font-size:.8rem}

.detail-panel{
  position:fixed;inset:0;background:rgba(42,40,38,.5);display:flex;
  align-items:center;justify-content:center;z-index:100;
}
.detail-panel[hidden]{display:none}
.detail-panel > div,
.detail-panel{
  flex-direction:column;
}
.detail-panel p{
  background:#fff;padding:2rem;max-width:400px;text-align:center;margin:0 1rem;
}
.detail-panel button{
  margin-top:1rem;background:var(--moss);color:#fff;border:none;
  padding:.6rem 2rem;cursor:pointer;display:block;margin-left:auto;margin-right:auto;
}

@media(max-width:768px){
  .split-layout{flex-direction:column}
  .split-left{
    position:relative;width:100%;height:auto;min-height:auto;padding:2rem 1.5rem;
  }
  .vertical-links{flex-direction:row;flex-wrap:wrap;margin-top:1rem}
  .scroll-hint{display:none}
  .philosophy-grid{grid-template-columns:1fr}
  .card-stack{height:480px}
}