/*
  메가솔루션 (MegaSolution)
  - Responsive, modern, SEO-friendly marketing site
  - Pure HTML + CSS + JS
*/

:root{
  --bg: #0b1020;
  --bg2:#050611;
  --card: rgba(255,255,255,.06);
  --card2: rgba(255,255,255,.085);
  --text:#eef2ff;
  --muted: rgba(238,242,255,.72);
  --line: rgba(238,242,255,.14);
  --brand1:#7c5cff;
  --brand2:#00d4ff;
  --good:#32d583;
  --shadow: 0 24px 80px rgba(0,0,0,.38);
  --shadow2: 0 18px 50px rgba(0,0,0,.30);
  --radius: 20px;
  --radius2: 14px;
  --ease: cubic-bezier(.2,.8,.2,1);
  --max: 1120px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", Arial, "Helvetica Neue", sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 15% 10%, rgba(124,92,255,.30), transparent 60%),
    radial-gradient(1000px 600px at 85% 15%, rgba(0,212,255,.22), transparent 60%),
    radial-gradient(900px 600px at 50% 90%, rgba(50,213,131,.14), transparent 65%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  min-height:100vh;
  line-height:1.6;
}

img{ max-width:100%; height:auto; }
a{ color:inherit; text-decoration:none; }

.container{
  width:min(var(--max), 92vw);
  margin:0 auto;
}

.skip-link{
  position:absolute;
  left:16px;
  top:-48px;
  padding:10px 14px;
  background:rgba(255,255,255,.12);
  border:1px solid var(--line);
  border-radius:999px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: top .2s var(--ease);
  z-index:9999;
}
.skip-link:focus{ top:16px; outline:none; box-shadow:0 0 0 4px rgba(124,92,255,.35); }

/* Header */
.topbar{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(11,16,32,.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 0;
  gap:16px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
}
.brand .wordmark{
  display:flex;
  flex-direction:column;
  line-height:1.1;
}
.brand .wordmark strong{ font-size:14px; letter-spacing:.04em; }
.brand .wordmark span{ font-size:12px; color:var(--muted); }

.nav-links{
  display:flex;
  align-items:center;
  gap:8px;
}
.nav-links a{
  padding:10px 12px;
  border-radius:999px;
  color:var(--muted);
  border:1px solid transparent;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.nav-links a:hover{
  background:rgba(255,255,255,.06);
  border-color:var(--line);
  color:var(--text);
}
.nav-links a[aria-current="page"]{
  color:var(--text);
  border-color: rgba(124,92,255,.45);
  background:rgba(124,92,255,.12);
}

.nav-cta{ display:flex; gap:10px; align-items:center; }

.icon-btn{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
  box-shadow:var(--shadow2);
  color:var(--text);
}
.icon-btn:focus-visible{ outline:none; box-shadow:0 0 0 4px rgba(0,212,255,.28), var(--shadow2); }

/* Mobile menu */
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  padding:12px 0 18px;
}
.mobile-panel a{
  display:block;
  padding:12px 8px;
  border-radius:12px;
  color:var(--muted);
}
.mobile-panel a:hover{ background:rgba(255,255,255,.06); color:var(--text); }
.mobile-panel .row{
  display:grid;
  gap:6px;
}

.nav-open .mobile-panel{ display:block; }

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
  color:var(--text);
  box-shadow:var(--shadow2);
  transition: transform .15s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
  font-weight:600;
  letter-spacing:.01em;
}
.btn:hover{ transform: translateY(-1px); background:rgba(255,255,255,.09); }
.btn:active{ transform: translateY(0); }
.btn:focus-visible{ outline:none; box-shadow:0 0 0 4px rgba(124,92,255,.28), var(--shadow2); }

.btn-primary{
  border-color: rgba(124,92,255,.55);
  background: linear-gradient(135deg, rgba(124,92,255,.80), rgba(0,212,255,.65));
}
.btn-primary:hover{ background: linear-gradient(135deg, rgba(124,92,255,.92), rgba(0,212,255,.78)); }

.btn-ghost{
  background:transparent;
  border-color: rgba(238,242,255,.18);
  box-shadow:none;
}
.btn-ghost:hover{ background:rgba(255,255,255,.06); }

.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(124,92,255,.35);
  background:rgba(124,92,255,.12);
  color:var(--text);
  font-size:13px;
}
.badge .dot{
  width:8px;
  height:8px;
  border-radius:999px;
  background:linear-gradient(135deg, var(--brand1), var(--brand2));
}

/* Typography */
.h1{
  font-size: clamp(32px, 4vw, 54px);
  line-height:1.1;
  letter-spacing:-.02em;
  margin:14px 0 14px;
}
.lead{
  font-size: clamp(15px, 1.25vw, 18px);
  color:var(--muted);
  margin: 0 0 20px;
}
.kicker{ color:var(--muted); font-weight:600; letter-spacing:.14em; text-transform:uppercase; font-size:12px; }

/* Sections */
.section{
  padding: 72px 0;
}
.section-tight{ padding: 54px 0; }

.panel{
  border:1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.04));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}

.hero{
  padding: 74px 0 38px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap:26px;
  align-items:stretch;
}
.hero-card{
  padding: 34px;
  position:relative;
}
.hero-card::before{
  content:"";
  position:absolute;
  inset:-1px;
  background: radial-gradient(800px 380px at 30% 20%, rgba(124,92,255,.22), transparent 60%),
              radial-gradient(650px 380px at 70% 10%, rgba(0,212,255,.18), transparent 55%),
              linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  z-index:0;
}
.hero-card > *{ position:relative; z-index:1; }

.hero-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:18px; }

.hero-side{
  padding: 28px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  gap:18px;
}

.metrics{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap:12px;
}
.metric{
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  border-radius: 16px;
  padding: 14px;
}
.metric strong{ font-size:20px; }
.metric span{ display:block; margin-top:4px; font-size:12px; color:var(--muted); }

.hr{ height:1px; background:var(--line); margin:14px 0; }

.grid{
  display:grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap:16px;
}

.card{
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  border-radius: var(--radius2);
  padding: 18px;
  box-shadow: var(--shadow2);
}
.card h3{ margin:10px 0 6px; font-size:18px; }
.card p{ margin:0; color:var(--muted); font-size:14px; }

.icon{
  width:42px;
  height:42px;
  border-radius: 14px;
  display:grid;
  place-items:center;
  border:1px solid rgba(124,92,255,.35);
  background: linear-gradient(135deg, rgba(124,92,255,.20), rgba(0,212,255,.14));
}
.icon svg{ width:22px; height:22px; }

.two-col{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:18px;
}

.list{
  display:grid;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
}
.list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  padding:12px 12px;
  border-radius: 14px;
}
.list .check{
  width:18px;
  height:18px;
  margin-top:2px;
  flex:0 0 auto;
  border-radius:999px;
  background: rgba(50,213,131,.18);
  border:1px solid rgba(50,213,131,.42);
  display:grid;
  place-items:center;
}
.list .check svg{ width:12px; height:12px; }

.cta{
  padding: 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  background: radial-gradient(800px 300px at 20% 20%, rgba(124,92,255,.26), transparent 62%),
              radial-gradient(800px 300px at 80% 10%, rgba(0,212,255,.20), transparent 56%),
              rgba(255,255,255,.04);
}
.cta h2{ margin:0; font-size:22px; }
.cta p{ margin:6px 0 0; color:var(--muted); }

/* Footer */
.footer{
  border-top:1px solid var(--line);
  padding: 28px 0;
  margin-top: 40px;
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap:18px;
}
.footer small{ color:var(--muted); }
.footer a{ color:var(--muted); }
.footer a:hover{ color:var(--text); }

.pill{
  display:inline-flex;
  gap:8px;
  align-items:center;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  padding:8px 10px;
  border-radius:999px;
  color:var(--muted);
  font-size:12px;
}

/* Utility */
.mt-0{ margin-top:0; }
.mb-0{ margin-bottom:0; }

/* Responsive */
@media (max-width: 960px){
  .hero-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .two-col{ grid-template-columns: 1fr; }
}

@media (max-width: 860px){
  .nav-links, .nav-cta .btn-ghost{ display:none; }
  .icon-btn{ display:inline-flex; }
}

@media (max-width: 520px){
  .hero-card{ padding: 26px; }
  .hero-side{ padding: 22px; }
  .section{ padding: 56px 0; }
  .cta{ padding: 22px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .btn{ transition:none; }
}