*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--paper:#f5f0e8;--ink:#4a5568;--accent:#c05621;--font:'Klee One','Noto Sans JP',sans-serif}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--paper);color:var(--ink);line-height:1.7}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--accent)}
.spiral-head{display:flex;align-items:center;gap:1.5rem;padding:1rem 2rem;background:#fff;border-bottom:2px dashed var(--accent);flex-wrap:wrap;position:sticky;top:0;z-index:50}
.logo{font-size:1.4rem;font-weight:700;text-decoration:none;color:var(--ink)}
.spiral-head nav{display:flex;gap:1.25rem;flex-wrap:wrap}
.spiral-head nav a{text-decoration:none;color:var(--ink);font-size:.9rem}
.menu{display:none;background:none;border:none;font-size:1.3rem;cursor:pointer;margin-left:auto}
.hero-spiral{display:grid;grid-template-columns:1fr 1fr;min-height:55vh;align-items:center;padding:3rem 2rem;gap:2rem;max-width:1100px;margin:0 auto}
.tag{font-size:.8rem;letter-spacing:.15em;color:var(--accent)}
.hero-spiral h1{font-size:clamp(1.8rem,4vw,2.8rem);margin:.75rem 0}
.cta{display:inline-block;margin-top:1rem;background:var(--accent);color:#fff;padding:.85rem 2rem;text-decoration:none;border-radius:4px}
.spiral-visual img{border-radius:50% 20% 50% 20%;box-shadow:12px 12px 0 var(--accent)}
.product-spiral{padding:4rem 2rem;background:#fff}
.product-spiral h2{text-align:center;font-size:1.8rem;margin-bottom:.5rem}
.lead{text-align:center;margin-bottom:2rem;opacity:.85}
.spiral-track{display:flex;gap:1.25rem;overflow-x:auto;padding-bottom:1rem;scroll-snap-type:x mandatory}
.spiral-track article{flex:0 0 220px;scroll-snap-align:center;background:var(--paper);padding:1rem;border-radius:12px;border:2px solid var(--ink)}
.spiral-track img{aspect-ratio:1;border-radius:8px;margin-bottom:.75rem}
.spiral-track h3{font-size:.95rem}
.price{font-weight:700;color:var(--accent);margin:.35rem 0}
.spiral-track button{width:100%;border:1px solid var(--accent);background:transparent;padding:.5rem;cursor:pointer;border-radius:4px;font-family:inherit}
.spiral-track button:hover{background:var(--accent);color:#fff}
.features{padding:4rem 2rem;max-width:1000px;margin:0 auto}
.features h2{text-align:center;margin-bottom:2rem}
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;margin-bottom:2rem}
.feat-grid strong{font-size:2rem;color:var(--accent);opacity:.5}
.feat-grid h3{margin:.25rem 0 .5rem}
.feat-img{width:100%;border-radius:8px;max-height:320px}
.voices{padding:3rem 2rem;background:var(--paper)}
.voices h2{text-align:center;margin-bottom:2rem}
.voices blockquote{max-width:700px;margin:0 auto 1.5rem;padding:1.25rem;background:#fff;border-left:4px solid var(--accent)}
.voices cite{display:block;margin-top:.75rem;font-size:.85rem;opacity:.7}
.faq{padding:3rem 2rem;max-width:700px;margin:0 auto 3rem}
.faq h2{margin-bottom:1.5rem}
.faq details{margin-bottom:1rem;border:1px solid #ddd;padding:1rem;border-radius:8px;background:#fff}
.faq summary{cursor:pointer;font-weight:600}
.legal{padding:3rem 2rem;background:var(--ink);color:#fff;font-size:.88rem}
.legal dl{display:grid;grid-template-columns:auto 1fr;gap:.35rem .75rem;margin:1rem 0}
.legal h3,.legal h4{color:#fbd38d;margin:1.25rem 0 .5rem}
.legal a{color:#fbd38d}
.copy{margin-top:2rem;opacity:.6}
.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--ink);color:#fff;padding:1rem 1.5rem;border-radius:8px;transform:translateY(150%);transition:transform .3s;z-index:99}
.toast.show{transform:translateY(0)}
@media(max-width:768px){
  .menu{display:block}
  .spiral-head nav{display:none;width:100%;flex-direction:column}
  .spiral-head nav.open{display:flex}
  .hero-spiral,.feat-grid{grid-template-columns:1fr}
}