:root{
  --bg:#0b1220;
  --card:#0f1a2f;
  --text:#e7eefc;
  --muted:#a9b7d4;
  --line:rgba(255,255,255,.10);
  --accent:#4cc9f0;
  --accent2:#80ffdb;
  --shadow: 0 12px 36px rgba(0,0,0,.35);
  --radius:18px;
  --max:980px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",sans-serif;
  background: radial-gradient(1200px 600px at 20% 0%, rgba(76,201,240,.22), transparent 60%),
              radial-gradient(900px 520px at 85% 10%, rgba(128,255,219,.16), transparent 55%),
              var(--bg);
  color:var(--text);
  line-height:1.55;
}

a{color:inherit}
.container{max-width:var(--max); margin:0 auto; padding: 22px 18px 56px;}

.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding: 14px 0 10px;
  border-bottom: 1px solid var(--line);
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:700; letter-spacing:.2px;
}
.badge{
  font-size:12px; color:var(--muted);
  border:1px solid var(--line);
  padding:4px 10px; border-radius:999px;
  background: rgba(255,255,255,.03);
}

.hero{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap:18px;
  margin-top:18px;
}
.card{
  background: rgba(15,26,47,.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.heroMain{padding:22px 22px 18px;}
.kicker{
  color:var(--accent2);
  font-weight:700;
  font-size:13px;
  letter-spacing:.16em;
  text-transform:uppercase;
}
.h1{
  margin:10px 0 10px;
  font-size:34px;
  line-height:1.18;
  letter-spacing:-.02em;
}
.sub{
  margin:0 0 16px;
  color:var(--muted);
  font-size:16px;
}
.pills{display:flex; flex-wrap:wrap; gap:10px; margin:14px 0 6px;}
.pill{
  font-size:13px;
  color: rgba(231,238,252,.92);
  border:1px solid var(--line);
  padding:7px 10px;
  border-radius:999px;
  background: rgba(255,255,255,.04);
}

.ctaWrap{
  margin-top:14px;
  display:flex; align-items:center; gap:12px; flex-wrap:wrap;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid rgba(76,201,240,.55);
  background: linear-gradient(135deg, rgba(76,201,240,.22), rgba(128,255,219,.12));
  color: var(--text);
  font-weight:800;
  text-decoration:none;
  box-shadow: 0 10px 26px rgba(76,201,240,.16);
  cursor:pointer;
  user-select:none;
}
.btn:active{transform: translateY(1px)}
.smallNote{
  font-size:12.5px;
  color: var(--muted);
}
.smallNote strong{color: rgba(231,238,252,.95)}
.rightCard{padding:18px;}
.profile{
  display:flex;
  gap:14px;
  align-items:center;
}
.avatar{
  width:78px; height:78px;
  border-radius: 18px;
  border: 1px solid var(--line);
  object-fit:cover;
  box-shadow: 0 10px 22px rgba(0,0,0,.25);
}
.name{
  font-size:18px; font-weight:900; margin:0;
}
.role{
  margin:4px 0 0;
  font-size:13px; color:var(--muted);
}
.proof{
  margin-top:14px;
  border-top:1px solid var(--line);
  padding-top:14px;
  display:grid; gap:10px;
}
.proofItem{
  display:flex; gap:10px;
  align-items:flex-start;
  color: rgba(231,238,252,.92);
  font-size:14px;
}
.dot{
  width:10px; height:10px; border-radius:999px;
  margin-top:6px;
  background: rgba(128,255,219,.75);
  box-shadow: 0 0 0 4px rgba(128,255,219,.10);
  flex:0 0 auto;
}

.grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:16px;
  margin-top:16px;
}
.section{padding:18px;}
.h2{
  margin:0 0 10px;
  font-size:18px;
  letter-spacing:-.01em;
}
.list{
  margin:0; padding:0 0 0 16px;
  color: rgba(231,238,252,.92);
}
.list li{margin:6px 0; color: rgba(231,238,252,.92)}
.muted{color:var(--muted)}
hr.sep{
  border:0; height:1px; background:var(--line);
  margin: 16px 0;
}

.videoWrap{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  border-radius: 16px;
  overflow:hidden;
  border: 1px solid var(--line);
  background: rgba(0,0,0,.18);
}
.videoWrap iframe{
  width:100%;
  height:100%;
  border:0;
}

details{
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,.03);
  overflow:hidden;
}
summary{
  cursor:pointer;
  padding: 12px 14px;
  list-style:none;
  font-weight:800;
}
summary::-webkit-details-marker{display:none}
.detailsBody{padding: 0 14px 14px; color: rgba(231,238,252,.92); font-size:13.5px;}
.detailsBody ul{margin:8px 0 0; padding-left:18px}
.detailsBody li{margin:6px 0}
.footer{
  margin-top:18px;
  color: var(--muted);
  font-size:12.5px;
  text-align:center;
}

@media (max-width: 860px){
  .hero{grid-template-columns:1fr; }
  .h1{font-size:30px}
  .grid{grid-template-columns:1fr}
}