/* Data Insight Lab - Landing v6 (no persona) */
:root{
  --bg1:#f6f8ff;
  --bg2:#ffffff;
  --text:#0b1220;
  --muted:#5b667a;
  --line:#e8ecf5;
  --brand1:#2563eb;
  --brand2:#7c3aed;
  --shadow: 0 16px 40px rgba(17,24,39,.10);
  --shadow2: 0 10px 24px rgba(17,24,39,.10);
  --radius: 18px;
  --radius2: 999px;
  --max: 980px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color:var(--text);
  background:
    radial-gradient(900px 420px at 50% -60px, rgba(124,58,237,.16), transparent 60%),
    radial-gradient(900px 420px at 50% 0px, rgba(37,99,235,.14), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg2));
}

a{color:inherit}
.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 16px 110px;
}

.header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin: 4px 0 14px;
}
.brand{display:flex; align-items:center; gap:10px;}
.brandMark{
  width:42px; height:42px;
  border-radius: 14px;
  display:flex; align-items:center; justify-content:center;
  font-weight:950;
  background: linear-gradient(135deg, rgba(37,99,235,.16), rgba(124,58,237,.14));
  border: 1px solid rgba(124,58,237,.18);
  color:#4c1d95;
  box-shadow: 0 10px 20px rgba(17,24,39,.08);
}
.brandName{font-weight:950; letter-spacing:-.02em;}
.brandSub{color:var(--muted); font-size:12.5px; margin-top:1px}
.nav a{
  font-size:13px;
  color:#334155;
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight:900;
}

.topbar{
  display:flex; gap:10px; justify-content:center; flex-wrap:wrap;
  margin: 10px 0 16px;
}
.pill{
  display:inline-flex; align-items:center;
  padding:10px 14px;
  border-radius: var(--radius2);
  background:#fff;
  border: 1px solid var(--line);
  box-shadow: 0 6px 18px rgba(17,24,39,.06);
  font-weight:950;
  font-size:13px;
  white-space:nowrap;
}

.card{
  background: rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 18px;
}
.hero{position:relative; overflow:hidden;}
.hero h1{
  margin:0 0 10px;
  font-size: clamp(22px, 4vw, 36px);
  line-height:1.18;
  letter-spacing:-.02em;
}
.sub{
  margin:0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}
.sub strong{color:#0b1220}

.ctaRow{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top:16px;
  align-items:center;
}
@media (max-width: 640px){
  .ctaRow{flex-direction:column; align-items:stretch;}
}

.btn{
  border: none;
  border-radius: 14px;
  padding: 14px 16px;
  font-weight: 950;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  box-shadow: var(--shadow2);
  transition: transform .12s ease, box-shadow .12s ease, opacity .12s ease;
  user-select:none;
  text-decoration:none;
}
.btn:active{transform: translateY(1px)}
.btnPrimary{
  color:#fff;
  background: linear-gradient(90deg, var(--brand1), var(--brand2));
  min-width: 280px;
}
.btnGhost{
  background:#fff;
  border:1px solid var(--line);
  color:var(--text);
  box-shadow: 0 10px 20px rgba(17,24,39,.07);
}
.arrow{
  width:22px; height:22px;
  border-radius: 999px;
  background: rgba(255,255,255,.22);
  display:inline-flex; align-items:center; justify-content:center;
  font-weight:950;
}

.chips{
  margin-top:14px;
  background:#fff;
  border:1px dashed rgba(124,58,237,.25);
  border-radius: 16px;
  padding: 12px 12px;
}
.chipTitle{
  font-weight:950;
  font-size: 13px;
  margin-bottom: 10px;
}
.chipRow{display:flex; gap:10px; flex-wrap:wrap}
.chip{
  border:1px solid var(--line);
  background: linear-gradient(90deg, rgba(37,99,235,.08), rgba(124,58,237,.08));
  border-radius: 999px;
  padding: 10px 12px;
  font-weight:950;
  cursor:pointer;
}
.chipHint{margin-top:8px; color:var(--muted); font-size:12.5px; line-height:1.55}

.grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}
@media (max-width: 860px){
  .grid{grid-template-columns:1fr;}
}

h2{
  margin:0 0 10px;
  font-size: 18px;
  letter-spacing:-.01em;
}
.list{
  margin: 0;
  padding-left: 18px;
  color:#1f2937;
  line-height: 1.7;
}
.list li{margin: 6px 0}
.miniNote{
  margin-top: 10px;
  font-size: 12.5px;
  color:#64748b;
  line-height: 1.6;
}

.steps{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap: 10px;
}
.steps li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding: 12px 12px;
  border:1px solid var(--line);
  border-radius: 14px;
  background:#fff;
  box-shadow: 0 8px 18px rgba(17,24,39,.06);
}
.stepNum{
  width:28px; height:28px;
  border-radius: 10px;
  display:flex; align-items:center; justify-content:center;
  font-weight:950;
  background: linear-gradient(135deg, rgba(37,99,235,.16), rgba(124,58,237,.14));
  border: 1px solid rgba(124,58,237,.18);
  color:#4c1d95;
  flex: 0 0 auto;
}
.stepTitle{font-weight:950; font-size: 14px; margin-bottom:2px}
.stepDesc{color:var(--muted); font-size:13px; line-height:1.5}

.ctaSmall{margin-top: 12px;}
.link{
  font-weight:950;
  color:#2563eb;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.qGrid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}
@media (max-width: 860px){
  .qGrid{grid-template-columns:1fr;}
}
.qItem{
  display:flex;
  gap:10px;
  align-items:center;
  justify-content:space-between;
  padding: 12px 12px;
  border:1px solid var(--line);
  border-radius: 14px;
  background:#fff;
  box-shadow: 0 8px 18px rgba(17,24,39,.06);
}
.q{
  font-weight:900;
  font-size: 13px;
  line-height: 1.4;
  color:#0b1220;
}
.qBtn{
  border:1px solid var(--line);
  background:#fff;
  border-radius: 12px;
  padding: 9px 10px;
  font-weight:950;
  cursor:pointer;
  white-space:nowrap;
  box-shadow: 0 8px 18px rgba(17,24,39,.06);
}

.soft{
  margin-top: 12px;
  font-size: 13px;
  color:#475569;
  line-height:1.65;
  background: rgba(37,99,235,.05);
  border: 1px solid rgba(37,99,235,.14);
  border-radius: 14px;
  padding: 12px 12px;
}

.sample{
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:#0b1220;
  padding: 12px 12px;
  overflow:auto;
}
.sample pre{
  margin:0;
  color:#e5e7eb;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 12.5px;
  line-height: 1.6;
  white-space: pre;
}

details{
  border:1px solid var(--line);
  border-radius: 14px;
  background:#fff;
  padding: 12px 12px;
  margin: 10px 0;
  box-shadow: 0 8px 18px rgba(17,24,39,.06);
}
summary{
  cursor:pointer;
  font-weight:950;
}
details p{
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.65;
}

.footer{
  margin-top: 16px;
  text-align:center;
}
.footerLinks{
  display:flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content:center;
  font-size: 12.5px;
  color:#334155;
}
.footerLinks a{
  font-weight:950;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footerMini{
  margin-top: 10px;
  color:#64748b;
  font-size: 12.5px;
}

.sticky{
  position:fixed;
  left:0; right:0; bottom:0;
  padding: 12px 14px;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
  z-index: 999;
}
.stickyInner{
  max-width: var(--max);
  margin: 0 auto;
  display:flex;
  gap: 10px;
  align-items:center;
  justify-content:space-between;
}
.stickyText{
  font-size: 12.5px;
  color:#475569;
  line-height: 1.35;
}
.stickyBtn{
  border:none;
  border-radius: 14px;
  padding: 12px 14px;
  font-weight: 950;
  cursor:pointer;
  color:#fff;
  background: linear-gradient(90deg, var(--brand1), var(--brand2));
  box-shadow: var(--shadow2);
  white-space:nowrap;
  text-decoration:none;
}

.toast{
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 78px;
  background: rgba(15,23,42,.92);
  color: #fff;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 12.5px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}
.toast.show{opacity: 1;}