:root { --bg:#fff; --fg:#222; --accent:#0f6ab4; --muted:#666; --card:#f8fbff; }
*{box-sizing:border-box}
html{font-size:16px}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic","Meiryo",sans-serif;color:var(--fg);background:var(--bg);line-height:1.7}
a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline}
.header{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid #eee}
.header-inner{max-width:960px;margin:0 auto;padding:.6rem 1rem;display:flex;align-items:center;justify-content:space-between}
.brand .title{font-size:1.05rem;font-weight:700}
.brand .subtitle{font-size:.85rem;color:var(--muted)}
.contact{font-size:.85rem;text-align:right}
.nav-toggle{display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;padding:.5rem .75rem;border:1px solid #ddd;border-radius:.5rem}
nav{max-width:960px;margin:0 auto;padding:0 1rem .5rem;display:none}
nav.open{display:block}
nav ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr;gap:.25rem}
nav li a{display:block;padding:.65rem;background:#fafafa;border:1px solid #eee;border-radius:.5rem}

.visual-hero{position:relative;overflow:hidden}
.visual-hero .hero-bg{
  background-image:url('hero_cross_hall_final3.jpg');
  background-size:cover;
  background-position:left center; /* ← 左寄せで「あ」が切れにくい */
  width:100%; height:36vh; min-height:220px;
}
.visual-hero .overlay{ position:absolute; inset:0; background:linear-gradient(0deg, rgba(0,0,0,.40), rgba(0,0,0,.15)); }
.visual-hero .hero-inner{ position:absolute; inset:0; display:flex; flex-direction:column; align-items:flex-start; justify-content:flex-end; padding:1rem; color:#fff; }
.visual-hero h1{margin:0 0 .25rem 0; font-size:1.6rem; line-height:1.2}
.visual-hero p{margin:0 0 .5rem 0; font-size:1rem}
.btn{display:inline-block; padding:.55rem .9rem; background:#fff; color:#111; border-radius:.6rem; border:1px solid #fff; margin-right:.5rem}
.btn.ghost{background:transparent; color:#fff}

.container{max-width:960px;margin:0 auto;padding:1rem}
.card{background:#fff;border:1px solid #eee;border-radius:.75rem;padding:1rem;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.note{color:#b00020;font-weight:600}
.footer{margin-top:2rem;border-top:1px solid #eee;background:#fafafa}
.footer-inner{max-width:960px;margin:0 auto;padding:1rem;font-size:.875rem;color:var(--muted)}

@media (min-width:800px){
  nav ul{grid-template-columns:repeat(7,1fr)}
  .visual-hero .hero-bg{height:48vh; min-height:320px}
  .visual-hero h1{font-size:2rem}
}