/* WCAMPER EDU OVND - Minimal landing CSS (no frameworks) */
:root{
  --bg:#070a09;
  --card:#0b0f0e;
  --card2:#0f1513;
  --text:#e9f2ee;
  --muted:#a8b7b1;
  --line:rgba(233,242,238,.12);
  --accent:#6ce9b4;
  --accent2:#ffcd6c;
  --danger:#ff6c6c;
  --shadow: 0 20px 50px rgba(0,0,0,.45);
  --radius: 18px;
  --radius2: 26px;
  --container: 1120px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic", Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(108,233,180,.15), transparent 60%),
    radial-gradient(900px 500px at 10% 0%, rgba(255,205,108,.12), transparent 55%),
    linear-gradient(180deg, #050707 0%, #070a09 30%, #060807 100%);
  line-height:1.6;
}

a{color:inherit; text-decoration:none}
a:hover{opacity:.92}
.muted{color:var(--muted)}
.small{font-size:.92rem}
.container{max-width:var(--container); margin:0 auto; padding:0 18px}

.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left:12px; top:12px; width:auto; height:auto; padding:10px 12px;
  background:var(--card); border:1px solid var(--line); border-radius:12px;
}

/* Header */
.header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(12px);
  background: rgba(7,10,9,.65);
  border-bottom:1px solid var(--line);
}
.header__inner{display:flex; align-items:center; justify-content:space-between; gap:14px; height:68px}
.brand__link{display:flex; flex-direction:column; gap:2px}
.brand__mark{font-weight:800; letter-spacing:.08em}
.brand__sub{font-size:.78rem; color:var(--muted); letter-spacing:.04em}

.nav{display:flex; gap:18px; align-items:center}
.nav a{color:var(--muted); font-size:.94rem}
.nav a:hover{color:var(--text)}
.nav__cta{
  color:#062115 !important;
  background:linear-gradient(135deg, var(--accent) 0%, #44d39a 55%, #2ac28a 100%);
  padding:10px 14px; border-radius:999px; font-weight:700;
  box-shadow: 0 12px 30px rgba(108,233,180,.18);
}

.navbtn{
  display:none;
  width:42px; height:42px; border-radius:14px;
  border:1px solid var(--line); background:rgba(11,15,14,.75);
  align-items:center; justify-content:center; gap:5px; cursor:pointer;
}
.navbtn span{display:block; width:18px; height:2px; background:var(--text); opacity:.9; border-radius:2px}

.mobile-nav{
  border-top:1px solid var(--line);
  background: rgba(7,10,9,.92);
}
.mobile-nav__inner{display:flex; flex-direction:column; padding:14px 18px 18px; gap:10px}
.mobile-nav a{color:var(--muted); padding:10px 12px; border-radius:14px; border:1px solid transparent}
.mobile-nav a:hover{border-color:var(--line); color:var(--text)}

/* Hero */
.hero{
  padding:54px 0 26px;
}
.hero__grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap:22px;
  align-items:stretch;
}
.hero__card{
  border:1px solid var(--line);
  background: linear-gradient(180deg, rgba(11,15,14,.82), rgba(11,15,14,.65));
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding:28px;
  position:relative;
  overflow:hidden;
}
.hero__card::before{
  content:"";
  position:absolute; inset:-2px;
  background: radial-gradient(500px 250px at 20% 0%, rgba(108,233,180,.16), transparent 70%),
              radial-gradient(520px 260px at 90% 10%, rgba(255,205,108,.12), transparent 70%);
  pointer-events:none;
}
.hero__title{position:relative; margin:0 0 10px; font-size:2.2rem; line-height:1.2; letter-spacing:-.02em}
.hero__title b{color:var(--accent)}
.hero__desc{position:relative; color:var(--muted); margin:0 0 18px; font-size:1.02rem}

.badges{position:relative; display:flex; flex-wrap:wrap; gap:10px; margin:0 0 18px}
.badge{
  padding:7px 10px;
  border:1px solid var(--line);
  background: rgba(15,21,19,.65);
  border-radius:999px;
  font-size:.86rem;
  color: var(--text);
}
.badge em{color:var(--accent); font-style:normal; font-weight:700}

.hero__cta{position:relative; display:flex; gap:12px; flex-wrap:wrap; align-items:center}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:12px 15px;
  border-radius: 16px;
  border:1px solid var(--line);
  background: rgba(15,21,19,.6);
  color: var(--text);
  font-weight:700;
}
.btn--primary{
  color:#062115;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent) 0%, #44d39a 55%, #2ac28a 100%);
}
.btn--ghost{color:var(--muted)}
.btn:hover{transform: translateY(-1px)}
.kpis{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:12px;
}
.kpi{
  border:1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11,15,14,.65);
  padding:16px;
}
.kpi__v{font-size:1.15rem; font-weight:800}
.kpi__k{color:var(--muted); font-size:.88rem; margin-top:2px}

/* Sections */
.section{padding:42px 0}
.section__head{margin-bottom:16px}
.h2{margin:0 0 6px; font-size:1.6rem; letter-spacing:-.01em}
.p{margin:0; color:var(--muted)}

.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
.grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}

.card{
  border:1px solid var(--line);
  background: rgba(11,15,14,.68);
  border-radius: var(--radius);
  padding:18px;
}
.card h3{margin:0 0 6px; font-size:1.08rem}
.card p{margin:0; color:var(--muted)}
.card ul{margin:10px 0 0; padding-left:18px; color:var(--muted)}
.card li{margin:6px 0}

.timeline{
  display:grid;
  gap:12px;
}
.day{
  border:1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11,15,14,.62);
  padding:16px 16px 14px;
}
.day__top{display:flex; align-items:flex-start; justify-content:space-between; gap:10px}
.day__name{font-weight:900}
.day__tag{
  font-size:.82rem; color:#062115;
  background: linear-gradient(135deg, var(--accent2), #ffd98e);
  padding:6px 10px; border-radius:999px; white-space:nowrap;
}
.day__goal{color:var(--muted); margin:6px 0 10px}
.day__cols{display:grid; grid-template-columns:1fr 1fr; gap:12px}
.day__cols ul{margin:0; padding-left:18px; color:var(--muted)}
.day__cols li{margin:6px 0}

.callout{
  border:1px solid rgba(108,233,180,.22);
  background: linear-gradient(180deg, rgba(108,233,180,.09), rgba(11,15,14,.55));
  border-radius: var(--radius2);
  padding:18px;
}

.pills{display:flex; flex-wrap:wrap; gap:10px; margin-top:10px}
.pill{
  border:1px dashed rgba(233,242,238,.22);
  border-radius: 999px;
  padding:8px 12px;
  color:var(--muted);
  font-size:.9rem;
}
.pill b{color:var(--text)}

.hr{height:1px; background:var(--line); margin:18px 0}

.faq{display:grid; gap:10px}
details{
  border:1px solid var(--line);
  background: rgba(11,15,14,.62);
  border-radius: var(--radius);
  padding:14px 16px;
}
summary{
  cursor:pointer;
  font-weight:800;
}
details p{color:var(--muted); margin:10px 0 0}

.apply{
  border:1px solid var(--line);
  border-radius: var(--radius2);
  background: linear-gradient(180deg, rgba(255,205,108,.08), rgba(11,15,14,.62));
  padding:20px;
  display:grid;
  grid-template-columns: 1fr .9fr;
  gap:14px;
  align-items:center;
}
.apply__box{border:1px solid var(--line); border-radius: var(--radius); padding:16px; background: rgba(15,21,19,.5)}
.apply__box .muted{margin-top:6px}

.footer{border-top:1px solid var(--line); padding:26px 0 36px; margin-top:30px}
.footer__inner{display:grid; gap:14px}
.footer__brand{display:flex; justify-content:space-between; gap:14px; flex-wrap:wrap}
.footer__logo{font-weight:900; letter-spacing:.08em}
.footer__links{display:flex; gap:12px; flex-wrap:wrap}
.footer__links a{color:var(--muted)}
.footer__links a:hover{color:var(--text)}
.footer__legal{font-size:.86rem}

@media (max-width: 980px){
  .hero__grid{grid-template-columns:1fr; }
  .kpis{grid-template-columns:1fr 1fr}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .day__cols{grid-template-columns:1fr}
  .apply{grid-template-columns:1fr}
}
@media (max-width: 780px){
  .nav{display:none}
  .navbtn{display:inline-flex}
  .kpis{grid-template-columns:1fr}
  .hero__title{font-size:1.9rem}
}