:root {
  --bg: #08111f;
  --bg-soft: #0f1a2c;
  --panel: rgba(255,255,255,0.06);
  --line: rgba(255,255,255,0.10);
  --text: #f4f8fb;
  --muted: #b9c7d6;
  --primary: #5fa6df;
  --secondary: #5db26d;
  --accent: #a2c84b;
  --navy: #365f9f;
  --shadow: 0 22px 60px rgba(0,0,0,0.28);
  --radius: 24px;
  --max: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans KR', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(95,166,223,0.15), transparent 28%),
    radial-gradient(circle at 90% 10%, rgba(93,178,109,0.10), transparent 20%),
    linear-gradient(180deg, #08101b 0%, #060c15 100%);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  transition: .3s ease;
}
.site-header.scrolled {
  background: rgba(6,12,21,0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.logo img {
  height: 48px;
  width: auto;
  background: rgba(255,255,255,0.98);
  padding: 4px 10px;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-weight: 500;
  color: rgba(244,248,251,0.92);
}
.main-nav a {
  position: relative;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -7px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  transition: width .25s ease;
}
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 14px 34px rgba(95,166,223,0.20);
}
.btn-outline {
  color: #fff;
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.14);
  backdrop-filter: blur(14px);
}
.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.06);
  color: #fff;
  font-size: 20px;
}

.hero-slider {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}
.hero-track,
.hero-slide {
  min-height: 100vh;
}
.hero-slide {
  position: absolute;
  inset: 0;
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  opacity: 0;
  visibility: hidden;
  transform: translate3d(30px, 22px, 0) scale(1.04);
  transition: opacity 1s ease, transform 1.15s ease, visibility 1.15s ease;
}
.hero-slide.active {
  opacity: 1;
  visibility: visible;
  transform: translate3d(0, 0, 0) scale(1);
}
.hero-slide .overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6,12,21,0.88) 0%, rgba(6,12,21,0.56) 42%, rgba(6,12,21,0.26) 62%, rgba(6,12,21,0.34) 100%),
    linear-gradient(180deg, rgba(6,12,21,0.16) 0%, rgba(6,12,21,0.32) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 130px 0 80px;
}
.hero-copy {
  max-width: 700px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: #a9d7ff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: '';
  width: 44px;
  height: 1px;
  background: linear-gradient(90deg, transparent, #7ed2ff);
}
.hero-copy h1,
.page-hero-copy h1 {
  margin: 0;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.05;
  letter-spacing: -0.05em;
}
.hero-copy h1 span,
.page-hero-copy h1 span {
  background: linear-gradient(135deg, #fff 0%, #b8ebff 52%, #b9eb92 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-copy p,
.page-hero-copy p {
  margin: 24px 0 34px;
  max-width: 620px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}
.hero-actions,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 32px;
  cursor: pointer;
  backdrop-filter: blur(12px);
}
.slider-arrow.prev { left: 28px; }
.slider-arrow.next { right: 28px; }
.slider-dots {
  position: absolute;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 10px;
}
.slider-dots .dot {
  width: 12px;
  height: 12px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.5);
  background: transparent;
  cursor: pointer;
}
.slider-dots .dot.active {
  background: #fff;
  box-shadow: 0 0 14px rgba(255,255,255,0.45);
}
.hero-meta {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 16px;
  max-width: 820px;
}
.metric-card {
  padding: 22px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(255,255,255,0.05));
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}
.metric-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 24px;
}
.metric-card span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.page-hero {
  position: relative;
  min-height: 70vh;
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6,12,21,0.90) 0%, rgba(6,12,21,0.60) 45%, rgba(6,12,21,0.30) 70%, rgba(6,12,21,0.36) 100%),
    linear-gradient(180deg, rgba(6,12,21,0.16) 0%, rgba(6,12,21,0.28) 100%);
}
.page-hero .container {
  position: relative;
  z-index: 2;
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 130px 0 80px;
}
.page-hero-copy { max-width: 760px; }
.breadcrumb {
  margin-bottom: 22px;
  color: rgba(255,255,255,0.72);
  font-size: 14px;
}
.breadcrumb a { color: #d7e8f7; }

.section {
  padding: 110px 0;
}
.section-heading {
  margin-bottom: 44px;
}
.section-heading h2 {
  margin: 0 0 16px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}
.section-heading p,
.text-block p,
.panel p,
.info-card p,
.timeline-card p,
.program-card p,
.faq-item p,
.page-summary p {
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
  font-size: 17px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 22px;
}
.info-card,
.panel,
.timeline-card,
.program-card,
.faq-item,
.preview-card {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  box-shadow: var(--shadow);
}
.info-card,
.timeline-card,
.program-card,
.faq-item,
.preview-card {
  padding: 30px;
}
.num-badge {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-bottom: 18px;
  background: rgba(95,166,223,0.14);
  color: #9fd5ff;
  font-weight: 800;
}
.info-card h3,
.panel h3,
.timeline-card h3,
.program-card h3,
.preview-card h3,
.faq-item h3 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.25;
  letter-spacing: -0.03em;
}
.split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 30px;
  align-items: stretch;
}
.panel {
  padding: 38px;
  background: linear-gradient(180deg, rgba(11,20,34,0.94), rgba(9,16,28,0.88));
}
.panel .list {
  margin-top: 24px;
  display: grid;
  gap: 18px;
}
.panel .list-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.panel .list-item:last-child { border-bottom: 0; padding-bottom: 0; }
.panel .list-item i {
  display: block;
  width: 12px;
  height: 12px;
  margin-top: 9px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}
.visual-cover,
.visual-grid img,
.preview-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 24px;
}
.visual-cover-wrap {
  overflow: hidden;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
  min-height: 100%;
}
.visual-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 16px;
}
.visual-grid img { min-height: 220px; }
.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 18px;
}
.program-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 22px;
}
.program-card.featured {
  background: linear-gradient(180deg, rgba(95,166,223,0.16), rgba(255,255,255,0.04));
  border-color: rgba(159,213,255,0.24);
}
.program-card .tag {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.09);
  color: #dff5ff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
}
.program-card ul,
.check-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  color: #e6eef5;
}
.program-card li,
.check-list li {
  position: relative;
  padding-left: 22px;
  line-height: 1.7;
}
.program-card li::before,
.check-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  top: 0;
  color: #9fd5ff;
  font-weight: 900;
}
.notice-box,
.cta-box {
  padding: 40px;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,0.10);
  background:
    radial-gradient(circle at right top, rgba(95,166,223,0.18), transparent 24%),
    radial-gradient(circle at left bottom, rgba(93,178,109,0.12), transparent 20%),
    linear-gradient(180deg, rgba(255,255,255,0.07), rgba(255,255,255,0.04));
  box-shadow: var(--shadow);
}
.notice-box strong {
  display: block;
  margin-bottom: 10px;
  font-size: 20px;
}
.notice-box p { color: var(--muted); line-height: 1.8; margin: 0; }
.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.faq-grid {
  display: grid;
  gap: 18px;
}
.site-footer {
  padding: 34px 0 54px;
  color: rgba(185,199,214,0.82);
  font-size: 14px;
}
.footer-inner {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s ease, transform .8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .hero-meta,
  .grid-3,
  .split,
  .timeline,
  .program-grid,
  .visual-grid {
    grid-template-columns: 1fr;
  }
  .hero-slide .overlay,
  .page-hero::before {
    background:
      linear-gradient(180deg, rgba(6,12,21,0.76) 0%, rgba(6,12,21,0.68) 100%),
      linear-gradient(90deg, rgba(6,12,21,0.80) 0%, rgba(6,12,21,0.32) 100%);
  }
}
@media (max-width: 860px) {
  .main-nav {
    display: none;
  }
  .main-nav.mobile-open {
    display: flex;
    position: absolute;
    top: 86px;
    left: 14px;
    right: 14px;
    flex-direction: column;
    gap: 18px;
    padding: 20px;
    border-radius: 20px;
    background: rgba(6,12,21,0.96);
    border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(16px);
  }
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .slider-arrow { width: 48px; height: 48px; font-size: 28px; }
  .slider-arrow.prev { left: 14px; }
  .slider-arrow.next { right: 14px; }
}
@media (max-width: 640px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { min-height: 80px; }
  .logo img { height: 40px; }
  .hero-content,
  .page-hero .container { padding: 124px 0 84px; }
  .section { padding: 84px 0; }
  .btn { width: 100%; }
  .header-actions { width: auto; }
  .hero-copy p,
  .page-hero-copy p,
  .section-heading p,
  .text-block p,
  .panel p,
  .info-card p,
  .timeline-card p,
  .program-card p,
  .faq-item p,
  .page-summary p { font-size: 15px; }
  .panel,
  .info-card,
  .timeline-card,
  .program-card,
  .faq-item,
  .preview-card,
  .notice-box,
  .cta-box { padding: 24px; }
}