/* ===== NGraph Common Styles — Light Theme ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans JP','Inter',-apple-system,sans-serif;color:#1a1a1a;background:#faf9f7;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

:root{
  --bg-primary:#faf9f7;
  --bg-card:#fff;
  --bg-card-alt:#f7f6f4;
  --border:rgba(0,0,0,.06);
  --border-hover:rgba(232,100,44,.15);
  --text-primary:#1a1a1a;
  --text-secondary:#666;
  --text-muted:#aaa;
  --accent:#e8642c;
  --accent-bg:rgba(232,100,44,.06);
  --accent-bg-hover:rgba(232,100,44,.1);
}

/* Header */
.header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(250,249,247,.85);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid var(--border);transition:all .3s}
.header.scrolled{box-shadow:0 1px 24px rgba(0,0,0,.06)}
.header-inner{max-width:1120px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px}
.header-inner a:first-child{display:flex;align-items:center;gap:8px}
.back-link{font-size:.82rem;color:var(--accent);font-weight:500;transition:opacity .2s}
.back-link:hover{opacity:.7}

/* Container */
.container{max-width:1120px;margin:0 auto;padding:0 24px}

/* Page Hero */
.page-hero{padding:160px 0 80px;text-align:center;position:relative;overflow:hidden;background:linear-gradient(170deg,#faf9f7 0%,#fff8f3 50%,#faf9f7 100%)}
.page-hero::before{content:'';position:absolute;width:600px;height:600px;top:-200px;right:-100px;border-radius:50%;background:radial-gradient(circle,rgba(232,100,44,.06),transparent 70%);pointer-events:none}
.page-hero-label{font-size:.7rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.2em;margin-bottom:14px}
.page-hero h1{font-size:2.2rem;font-weight:800;letter-spacing:-.02em;color:var(--text-primary);margin-bottom:16px}
.page-hero-sub{font-size:.95rem;color:var(--text-secondary);max-width:480px;margin:0 auto}

/* Section */
.section{padding:80px 0;position:relative}
.section-inner{max-width:720px;margin:0 auto}
.section-label{font-size:.65rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.16em;margin-bottom:12px}
.section-title{font-size:1.5rem;font-weight:800;margin-bottom:20px;line-height:1.45;letter-spacing:-.02em;color:var(--text-primary)}
.section-body p{font-size:.9rem;color:var(--text-secondary);line-height:2.1;margin-bottom:12px}

/* Glass Card (light version) */
.glass-card{background:var(--bg-card);border:1px solid var(--border);border-radius:20px;box-shadow:0 4px 24px rgba(0,0,0,.03);transition:all .3s}
.glass-card:hover{border-color:var(--border-hover);box-shadow:0 8px 32px rgba(0,0,0,.05)}

/* CTA */
.cta-btn{display:inline-flex;align-items:center;gap:10px;background:var(--accent);color:#fff;padding:16px 40px;border-radius:14px;font-size:1.05rem;font-weight:700;border:none;cursor:pointer;transition:all .25s;box-shadow:0 4px 20px rgba(232,100,44,.25);position:relative;overflow:hidden}
.cta-btn::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.15),transparent);opacity:0;transition:opacity .3s}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(232,100,44,.35)}
.cta-btn:hover::after{opacity:1}
.cta-btn svg{width:18px;height:18px;transition:transform .2s}
.cta-btn:hover svg{transform:translateX(3px)}

/* Divider */
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent);margin:0;border:none}

/* Footer */
.footer{background:#111;color:rgba(255,255,255,.4);padding:48px 0 28px;font-size:.78rem}
.footer-inner{max-width:1120px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px}
.footer-brand{font-weight:700;font-size:1rem;color:#fff;margin-bottom:6px}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-links a{color:rgba(255,255,255,.4);transition:color .2s}
.footer-links a:hover{color:var(--accent)}
.footer-copy{text-align:center;margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.06)}

/* Responsive */
@media(max-width:768px){
  .page-hero{padding:120px 0 60px}
  .page-hero h1{font-size:1.6rem}
  .section-title{font-size:1.3rem}
  .footer-inner{flex-direction:column;align-items:center;text-align:center}
}