:root{
  --primary: #673AB7;
  --secondary: #FFC107;
  --soft: rgba(103,58,183,.22);
  --bg: #0b0b10;
  --bg-2: #14141c;
  --card: rgba(255,255,255,0.04);
  --card-hover: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.08);
  --text: #f5f5f7;
  --muted: #a0a0b0;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Pretendard","Apple SD Gothic Neo","Noto Sans KR",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.hero,.page{
  position:relative;
  min-height:100vh;
  padding:56px 20px 40px;
  overflow:hidden;
  background:radial-gradient(ellipse at top, var(--soft) 0%, transparent 55%), var(--bg);
}
.bg-orb{position:absolute;border-radius:50%;filter:blur(130px);opacity:.45;pointer-events:none}
.orb-1{top:-120px;left:-120px;width:420px;height:420px;background:var(--primary)}
.orb-2{bottom:-160px;right:-120px;width:520px;height:520px;background:var(--secondary)}

.container{position:relative;max-width:720px;margin:0 auto;z-index:1}

.brand{text-align:center;margin-bottom:44px}
.brand-tag{
  display:inline-block;padding:6px 14px;
  border:1px solid var(--border);border-radius:999px;
  font-size:12px;color:var(--muted);letter-spacing:.05em;margin-bottom:18px;
  background:rgba(255,255,255,.02);
}
.brand-name{
  font-size:clamp(28px,5vw,40px);font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  margin-bottom:12px;line-height:1.2;
}
.brand-desc{color:var(--muted);font-size:15px;max-width:520px;margin:0 auto;padding:0 12px}

.cta{display:flex;flex-direction:column;gap:14px;margin-bottom:52px}
.cta-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:18px;padding:22px;backdrop-filter:blur(10px);
}
.cta-label{font-size:13px;color:var(--muted);margin-bottom:14px;text-align:center;letter-spacing:.02em}
.btn{
  display:flex;align-items:center;justify-content:space-between;
  width:100%;padding:18px 22px;border-radius:14px;
  font-size:16px;font-weight:700;
  transition:transform .15s ease, box-shadow .25s ease, border-color .15s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 28px -10px var(--primary)}
.btn-primary:hover{box-shadow:0 14px 36px -8px var(--primary)}
.btn-secondary{background:rgba(255,255,255,.02);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{border-color:var(--primary)}
.btn-url{font-family:"SF Mono",Menlo,Consolas,monospace;font-size:15px;letter-spacing:.01em}
.btn-arrow{font-weight:400;opacity:.7;font-size:18px}

.faq{margin-bottom:48px}
.faq h2{font-size:22px;margin-bottom:18px;font-weight:700;letter-spacing:-.01em}
.faq details{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;margin-bottom:10px;overflow:hidden;
  transition:background .15s ease;
}
.faq details:hover{background:var(--card-hover)}
.faq summary{
  padding:18px 50px 18px 20px;cursor:pointer;
  font-weight:600;font-size:15px;list-style:none;position:relative;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:20px;top:50%;
  transform:translateY(-50%);font-size:22px;color:var(--primary);
  transition:transform .2s ease;
}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq details p{padding:0 20px 18px;color:var(--muted);font-size:14px;line-height:1.75}

.site-footer{
  border-top:1px solid var(--border);padding-top:22px;
  text-align:center;color:var(--muted);font-size:13px;
}
.site-footer nav{margin-bottom:10px}
.site-footer nav a{color:var(--muted);font-size:12px;transition:color .15s ease}
.site-footer nav a:hover{color:var(--primary)}
.site-footer .sep{margin:0 8px;opacity:.4}
.copyright{font-size:11px;opacity:.55}

.page-header{margin-bottom:28px;text-align:center}
.back-link{
  display:inline-block;color:var(--muted);font-size:13px;
  margin-bottom:16px;transition:color .15s ease;
}
.back-link:hover{color:var(--primary)}
.page-header h1{font-size:clamp(24px,4vw,32px);font-weight:800;letter-spacing:-.02em;line-height:1.25}

.prose{
  background:var(--card);border:1px solid var(--border);
  border-radius:18px;padding:30px;margin-bottom:28px;
}
.prose h2{font-size:17px;margin:22px 0 10px;color:var(--primary);font-weight:700}
.prose h2:first-child{margin-top:0}
.prose p{margin-bottom:14px;color:#d0d0d8;font-size:15px;line-height:1.85}

.contact-list{list-style:none;padding:0;margin-bottom:28px}
.contact-list li{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:18px 20px;margin-bottom:10px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;
}
.contact-list .label{color:var(--muted);font-size:13px}
.contact-list .value{font-weight:600;font-size:15px}
.contact-list a.value{color:var(--primary)}
.contact-list a.value:hover{text-decoration:underline}

@media (max-width:520px){
  .hero,.page{padding:36px 16px 28px}
  .prose{padding:22px}
  .btn{padding:16px 18px;font-size:15px}
  .cta-card{padding:18px}
  .brand{margin-bottom:32px}
  .cta{margin-bottom:40px}
  .faq h2{font-size:20px}
  .contact-list li{flex-direction:column;align-items:flex-start}
}