*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:    #111111;
  --ash:    #f4f3f1;
  --stone:  #6b6b6b;
  --accent: #1a3a5c;
  --gold:   #c9a84c;
  --white:  #ffffff;
  --serif:  'Noto Serif JP', serif;
  --sans:   'Noto Sans JP', sans-serif;
  --amiri:  'Amiri';
  --garamond:  'EB Garamond';
  --co-garamond:  'Cormorant Garamond';
}

html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--sans); color: var(--ink); background: var(--white); overflow-x: hidden; }

/* ─── SPARKLE CANVAS ─── */
#sparkle-canvas {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .35;
}

/* ─── HEADER ─── */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.96); backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0,0,0,.08);
  transition: box-shadow .3s;
}
header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.1); }
.header-inner {
  max-width: unset;
  margin: 0 auto;
  padding: 0 3%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 20px;
}
.logo-wrap { display: flex; align-items: center; gap: .75rem; text-decoration: none; color: inherit; width: 50%; }
.logo-wrap img { height: 48px; width: auto; object-fit: contain; }
.logo-text-main { font-size: 1.2rem; font-weight: 700; color: var(--ink); }
.logo-text-sub  { font-size: .65rem; color: var(--stone); letter-spacing: .06em; }
nav { 
  display: flex;
  align-items: center;
  gap: 2rem;
  width: 100%;
  justify-content: end;
}
nav a { font-size: .9rem; color: var(--stone); text-decoration: none; transition: color .2s; position: relative; padding-bottom: 2px; }
nav a::after { content:''; position:absolute; bottom:0; left:0; width:0; height:1px; background:var(--ink); transition:width .3s; }
nav a:hover { color: var(--ink); }
nav a:hover::after { width: 100%; }
.btn-recruit {
  background: var(--ink);
  color: var(--white);
  padding: .65rem 1.5rem;
  border-radius: 4px;
  font-size: .85rem;
  text-decoration: none;
  transition: background .2s, transform .2s;
  width: 100%;
  max-width: 120px;
  text-align: center;
}
.btn-recruit:hover { background: var(--accent); transform: translateY(-1px); }
.mobile-menu-btn { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.mobile-menu-btn span { display: block; width: 24px; height: 2px; background: var(--ink); transition: all .3s; }

@media (max-width: 568px) {
  .logo-wrap {
    width: 100%;
  }
}