:root{
  --c-bg:#fdfaf8;
  --c-surface:#ffffff;
  --c-fg:#2a1f1f;
  --c-muted:#8a7878;
  --c-line:#ecdfd9;
  --c-peach:#f4c9c1;
  --c-peach-dp:#d98f85;
  --c-peach-dark:#b36a62;
  --c-leaf:#8fa67a;
  --c-accent:var(--c-peach-dp);
  --c-danger:#c9453a;
  --radius-sm:6px;
  --radius-md:10px;
  --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(42,31,31,.04),0 2px 8px rgba(42,31,31,.04);
  --shadow-md:0 4px 14px rgba(42,31,31,.06);
  --max-w:1120px;
  --header-h:72px;
  --font-jp:"Noto Sans JP",system-ui,-apple-system,"Segoe UI","Hiragino Sans","Yu Gothic UI",sans-serif;
  --font-en:"Plus Jakarta Sans","Inter",system-ui,sans-serif;
}

html,body{background:var(--c-bg);color:var(--c-fg);font-family:var(--font-jp);font-size:clamp(15px,1.6vw,17px);line-height:1.8;font-feature-settings:"palt"}
.en{font-family:var(--font-en);letter-spacing:.02em}

.container{max-width:var(--max-w);margin-inline:auto;padding-inline:20px}
.section{padding-block:clamp(64px,10vw,120px)}
.section--alt{background:var(--c-surface)}

/* Typography */
h1,h2,h3,h4{font-weight:600;line-height:1.4;letter-spacing:-.005em;color:var(--c-fg)}
.h1,h1{font-size:clamp(28px,5vw,44px)}
.h2,h2{font-size:clamp(24px,3.5vw,34px)}
.h3,h3{font-size:clamp(19px,2.2vw,22px)}
.lead{font-size:clamp(16px,1.8vw,18px);color:var(--c-muted)}
.eyebrow{display:inline-block;font-family:var(--font-en);font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--c-peach-dark);margin-bottom:12px}
.eyebrow::before{content:"";display:inline-block;width:18px;height:1px;background:var(--c-peach-dp);vertical-align:middle;margin-right:10px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 26px;border-radius:var(--radius-sm);font-weight:500;font-size:15px;transition:background .18s,color .18s,transform .18s}
.btn--primary{background:var(--c-peach-dp);color:#fff}
.btn--primary:hover{background:var(--c-peach-dark)}
.btn--ghost{background:transparent;color:var(--c-fg);border:1px solid var(--c-line)}
.btn--ghost:hover{background:var(--c-peach);border-color:var(--c-peach)}
.btn[aria-disabled="true"]{opacity:.5;pointer-events:none}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--c-bg) 88%,transparent);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid transparent;transition:border-color .2s,background .2s}
.site-header.is-scrolled{border-bottom-color:var(--c-line);background:color-mix(in srgb,var(--c-bg) 96%,transparent)}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.site-header__logo{display:flex;align-items:center;gap:10px}
.site-header__logo img{width:auto;height:32px}
.site-nav{display:flex;align-items:center;gap:28px}
.site-nav a{font-size:14px;color:var(--c-fg);position:relative;transition:color .18s}
.site-nav a:hover{color:var(--c-peach-dark)}
.site-nav a.is-current::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--c-peach-dp);border-radius:2px}
.site-nav .btn{min-height:40px;padding:0 18px;font-size:14px}
.nav-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--c-fg);position:relative;transition:transform .2s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:20px;height:1.5px;background:var(--c-fg);transition:transform .2s,top .2s}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

@media (max-width:860px){
  .nav-toggle{display:flex}
  .site-nav{position:fixed;inset:var(--header-h) 0 auto 0;flex-direction:column;align-items:stretch;gap:0;background:var(--c-surface);border-bottom:1px solid var(--c-line);padding:12px 20px 24px;transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
  .site-nav.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
  .site-nav a{padding:14px 4px;border-bottom:1px solid var(--c-line);font-size:15px}
  .site-nav a.is-current::after{display:none}
  .site-nav .btn{margin-top:16px;min-height:48px}
}

/* Footer */
.site-footer{background:var(--c-surface);border-top:1px solid var(--c-line);padding-block:56px 32px;margin-top:80px}
.site-footer__grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;align-items:start}
.site-footer__brand img{height:28px;margin-bottom:12px}
.site-footer__desc{color:var(--c-muted);font-size:13px;max-width:36ch}
.site-footer h4{font-size:13px;font-weight:600;color:var(--c-muted);text-transform:uppercase;letter-spacing:.1em;font-family:var(--font-en);margin-bottom:14px}
.site-footer ul li{margin-bottom:8px}
.site-footer ul a{font-size:14px;color:var(--c-fg)}
.site-footer ul a:hover{color:var(--c-peach-dark)}
.site-footer__bottom{margin-top:48px;padding-top:20px;border-top:1px solid var(--c-line);display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--c-muted)}
@media (max-width:720px){
  .site-footer__grid{grid-template-columns:1fr;gap:28px}
  .site-footer__bottom{flex-direction:column;gap:10px;text-align:center}
}

/* Skip link */
.skip-link{position:absolute;left:8px;top:8px;padding:8px 14px;background:var(--c-fg);color:var(--c-bg);border-radius:4px;transform:translateY(-200%);transition:transform .15s;z-index:100}
.skip-link:focus{transform:translateY(0)}

/* Focus */
:focus-visible{outline:2px solid var(--c-peach-dp);outline-offset:2px;border-radius:2px}

/* Utility */
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);border:0}
.divider{height:1px;background:var(--c-line);margin-block:32px}
.peach-rule{display:block;width:48px;height:2px;background:var(--c-peach-dp);border-radius:2px;margin:16px 0 24px}