@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700;900&family=Inter:wght@300;400;600;700&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #0A1628;
  --navy2: #112240;
  --blue: #1A56DB;
  --blue-light: #3B82F6;
  --cyan: #06B6D4;
  --gold: #F59E0B;
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-300: #CBD5E1;
  --gray-500: #64748B;
  --gray-700: #334155;
  --text: #1E293B;
}

html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans KR', sans-serif; color: var(--text); background: var(--white); line-height: 1.7; }

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10,22,40,0.96); backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  padding: 0 40px; height: 70px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  border-radius: 8px; display: flex; align-items: center; justify-content: center;
  font-weight: 900; color: white; font-size: 15px; letter-spacing: -1px;
}
.logo-text { font-size: 20px; font-weight: 700; color: white; letter-spacing: -0.5px; }
.logo-text span { color: var(--cyan); }
nav ul { list-style: none; display: flex; gap: 32px; align-items: center; }
nav ul a {
  color: rgba(255,255,255,0.7); text-decoration: none; font-size: 14px;
  font-weight: 400; transition: color 0.2s; letter-spacing: 0.3px; padding: 4px 0;
  position: relative;
}
nav ul a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  transition: width 0.3s;
}
nav ul a:hover { color: white; }
nav ul a:hover::after, nav ul a.active::after { width: 100%; }
nav ul a.active { color: white; }
.nav-cta {
  background: linear-gradient(135deg, var(--blue), var(--cyan)) !important;
  color: white !important; padding: 9px 22px !important; border-radius: 6px;
  font-weight: 500 !important; transition: opacity 0.2s, transform 0.2s !important;
  box-shadow: 0 2px 12px rgba(26,86,219,0.3);
}
.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }
.nav-cta::after { display: none !important; }

/* ── PAGE HERO ── */
.page-hero {
  min-height: 340px; background: var(--navy); position: relative;
  overflow: hidden; display: flex; align-items: center;
  padding: 120px 40px 60px;
}
.page-hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 70% at 60% 60%, rgba(26,86,219,0.15) 0%, transparent 70%);
}
.page-hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-hero-inner { position: relative; max-width: 1200px; margin: 0 auto; width: 100%; }
.page-hero-label {
  font-size: 12px; font-weight: 600; letter-spacing: 3px; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 14px;
}
.page-hero h1 {
  font-size: clamp(32px,4vw,52px); font-weight: 900; color: white;
  letter-spacing: -1.5px; line-height: 1.15; margin-bottom: 16px;
}
.page-hero h1 .accent {
  background: linear-gradient(135deg, var(--blue-light), var(--cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.page-hero p { font-size: 17px; color: rgba(255,255,255,0.6); font-weight: 300; max-width: 560px; }

/* ── SECTIONS ── */
section { padding: 90px 40px; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-label { font-size: 12px; font-weight: 600; letter-spacing: 3px; text-transform: uppercase; color: var(--blue); margin-bottom: 14px; }
.section-title { font-size: clamp(26px,3.5vw,40px); font-weight: 800; letter-spacing: -1px; line-height: 1.2; color: var(--navy); margin-bottom: 14px; }
.section-sub { font-size: 16px; color: var(--gray-500); max-width: 540px; font-weight: 300; line-height: 1.8; }
.section-header { margin-bottom: 56px; }

/* ── BUTTONS ── */
.btn-primary {
  background: linear-gradient(135deg, var(--blue), #2563EB); color: white;
  padding: 14px 30px; border-radius: 8px; font-size: 15px; font-weight: 600;
  text-decoration: none; border: none; cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s; display: inline-block;
  box-shadow: 0 4px 20px rgba(26,86,219,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(26,86,219,0.45); }
.btn-outline {
  background: transparent; color: var(--navy); padding: 14px 30px; border-radius: 8px;
  font-size: 15px; font-weight: 500; text-decoration: none; display: inline-block;
  border: 2px solid var(--gray-300); cursor: pointer; transition: border-color 0.2s, color 0.2s;
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }

/* ── FOOTER ── */
footer {
  background: var(--navy); padding: 56px 40px 28px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 56px; margin-bottom: 44px;
}
.footer-brand p { font-size: 13px; color: rgba(255,255,255,0.38); line-height: 1.8; font-weight: 300; margin-top: 14px; max-width: 260px; }
.footer-col h4 { font-size: 12px; font-weight: 600; color: rgba(255,255,255,0.65); margin-bottom: 14px; letter-spacing: 0.5px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-col ul a { font-size: 13px; color: rgba(255,255,255,0.33); text-decoration: none; transition: color 0.2s; font-weight: 300; }
.footer-col ul a:hover { color: rgba(255,255,255,0.65); }
.footer-bottom {
  padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.06);
  display: flex; justify-content: space-between; align-items: center;
}
.footer-bottom p { font-size: 11px; color: rgba(255,255,255,0.22); }
.footer-cert { display: flex; gap: 10px; }
.cert-badge { font-size: 10px; color: rgba(255,255,255,0.28); border: 1px solid rgba(255,255,255,0.1); padding: 3px 8px; border-radius: 3px; }

/* ── BREADCRUMB ── */
.breadcrumb { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.breadcrumb a { font-size: 13px; color: rgba(255,255,255,0.45); text-decoration: none; }
.breadcrumb a:hover { color: rgba(255,255,255,0.7); }
.breadcrumb span { font-size: 13px; color: rgba(255,255,255,0.3); }
.breadcrumb .current { font-size: 13px; color: var(--cyan); }

/* ── CARDS COMMON ── */
.card {
  background: white; border-radius: 14px; border: 1px solid var(--gray-100);
  transition: transform 0.25s, box-shadow 0.25s;
}
.card:hover { transform: translateY(-5px); box-shadow: 0 16px 40px rgba(0,0,0,0.09); }

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 600px) {
  nav { padding: 0 20px; }
  nav ul { display: none; }
  .page-hero { padding: 100px 20px 50px; }
  section { padding: 60px 20px; }
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
}