:root{
  --bg:#0b0f19;
  --card:#121a2a;
  --text:#e8eefc;
  --muted:#a8b3cf;
  --line:rgba(255,255,255,.10);
  --accent:#4f8cff;
  --accent2:#00d1b2;
  --max:1100px;
  --radius:16px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans KR", sans-serif;
  background: radial-gradient(1200px 600px at 15% 0%, rgba(79,140,255,.18), transparent 60%),
              radial-gradient(900px 500px at 90% 15%, rgba(0,209,178,.14), transparent 55%),
              var(--bg);
  color:var(--text);
  line-height:1.6;
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 18px}

.header{
  position:sticky;top:0;z-index:50;
  backdrop-filter: blur(10px);
  background: rgba(11,15,25,.65);
  border-bottom: 1px solid var(--line);
}
.header .bar{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;
}
.brand{
  display:flex;gap:12px;align-items:center;
  font-weight:800;letter-spacing:.3px;
}
.brand-logo{
  height:34px;
  width:auto;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.35);
  padding:4px 8px;
}
.nav{display:flex;gap:18px;align-items:center}
.nav a{
  color:var(--muted);
  padding:8px 10px;border-radius:10px;
}
.nav a:hover{background:rgba(255,255,255,.06);color:var(--text)}
.nav a.active{background:rgba(79,140,255,.18);color:var(--text)}

.menu-btn{
  display:none;
  padding:10px 12px;border:1px solid var(--line);
  border-radius:12px;background:rgba(255,255,255,.04);
  color:var(--text);
}

.mobile-nav{
  display:none;
  border-top:1px solid var(--line);
  padding:10px 0 14px;
}
.mobile-nav a{
  display:block;
  padding:10px 12px;
  color:var(--muted);
  border-radius:12px;
}
.mobile-nav a:hover{background:rgba(255,255,255,.06);color:var(--text)}

.hero{
  padding:64px 0 28px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:18px;
  align-items:stretch;
}
.hero h1{
  font-size:40px;line-height:1.15;margin:0 0 12px;
}
.hero p{margin:0 0 18px;color:var(--muted);max-width:60ch}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.badge{
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  padding:7px 10px;border-radius:999px;
  color:var(--muted);font-size:13px;
}
.cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;
  padding:12px 14px;border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
}
.btn.primary{
  border:none;
  background: linear-gradient(135deg, var(--accent), #2f6bff);
  box-shadow: 0 14px 35px rgba(79,140,255,.25);
}
.btn.secondary{
  background:rgba(0,209,178,.10);
  border:1px solid rgba(0,209,178,.25);
}

.card{
  border:1px solid var(--line);
  background: rgba(18,26,42,.75);
  border-radius:var(--radius);
  padding:18px;
  box-shadow: 0 10px 30px rgba(0,0,0,.20);
}

.kpi{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
  margin-top:14px;
}
.kpi .item{padding:14px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.kpi .num{font-weight:900;font-size:20px}
.kpi .label{color:var(--muted);font-size:13px}

.section{padding:22px 0}
.section-title{
  display:flex;align-items:end;justify-content:space-between;
  gap:12px;margin:0 0 12px;
}
.section-title h2{margin:0;font-size:22px}
.section-title p{margin:0;color:var(--muted);font-size:14px}
.grid4{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:12px;
}
.grid3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
}
.grid2{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:12px;
}

/* 카드 안 이미지 영역 */
.image-grid{
  display: flex;
  align-items: center;      /* 세로 중앙 */
  justify-content: center;  /* 가로 중앙 */
  width: 100%;
  height: 220px;            /* 카드 높이 (조절 가능) */
  overflow: hidden;
}

/* 이미지 래퍼 */
.image-item{
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 실제 이미지 */
.image-item img{
  height: 100%;      /* ✅ 세로 기준 꽉 채움 */
  width: auto;       /* ✅ 가로는 비율 유지 */
  max-width: 100%;   /* 카드 밖으로 튀어나오지 않게 */
  object-fit: contain; /* 안전장치 (실제 영향은 거의 없음) */
  display: block;
  border-radius: 12px;
}

.related{ margin-top:14px; }
.related-list{ margin:6px 0 0; padding-left:16px; }
.related-list a{ color:var(--text); font-weight:700; }
.related-list a:hover{ color:var(--accent); }



.image-item small {
  display: block;
  margin-top: 6px;
  text-align: center;
  color: var(--muted);
  font-weight: 500;
}

.feature h3{margin:10px 0 6px;font-size:16px}
.feature p{margin:0;color:var(--muted)}
.icon{
  width:42px;height:42px;border-radius:14px;
  background:rgba(79,140,255,.15);
  border:1px solid rgba(79,140,255,.25);
  display:flex;align-items:center;justify-content:center;
  font-weight:900;color:var(--text);
}

.list{
  margin:0;padding:0;list-style:none;
}
.list li{
  padding:10px 0;
  border-bottom:1px solid var(--line);
  color:var(--muted);
}
.list li:last-child{border-bottom:none}

.form{
  display:grid;gap:12px;
}
.input{
  width:100%;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text);
  outline:none;
}
.input:focus{border-color:rgba(79,140,255,.45)}
textarea.input{min-height:140px;resize:vertical}
.form-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}
.notice{
  font-size:13px;
  color:var(--muted);
}
.toast{
  margin-top:10px;
  padding:12px 12px;border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  display:none;
}
.toast.ok{border-color:rgba(0,209,178,.35);background:rgba(0,209,178,.08)}
.toast.bad{border-color:rgba(255,79,79,.35);background:rgba(255,79,79,.08)}

.footer{
  padding:28px 0 36px;
  border-top:1px solid var(--line);
  color:var(--muted);
  margin-top:20px;
}
.footer .cols{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:14px;
}
.footer small{display:block;color:rgba(168,179,207,.85)}

@media (max-width: 900px){
  .hero-grid{grid-template-columns:1fr}
  .grid4{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .kpi{grid-template-columns:1fr}
  .nav{display:none}
  .menu-btn{display:inline-flex}
  .mobile-nav{display:none}
  .image-grid { grid-template-columns: 1fr; }
}