@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;600;700;800;900&display=swap');

:root {
  --red: #ff1010;
  --blue: #1249ff;
  --ink: #101114;
  --muted: #6b7280;
  --line: #e8e8ec;
  --bg: #ffffff;
  --soft: #f6f7fa;
  --dark: #090a0d;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Noto Sans KR", system-ui, sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(0,0,0,.06);
}
.nav-wrap {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand img { width: 270px; max-width: 58vw; display: block; }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a { font-weight: 700; font-size: 14px; transition: .2s; }
.nav a:hover { color: var(--blue); }
.menu-toggle {
  display: none;
  border: 0;
  background: none;
  font-size: 27px;
  cursor: pointer;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 650px;
  display: flex;
  align-items: center;
  background: #08090c;
  color: white;
}
.hero:after {
  content: "";
  position: absolute;
  inset: auto -10% -50% -10%;
  height: 65%;
  background: radial-gradient(ellipse, rgba(18,73,255,.35), transparent 62%);
}
.hero-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .34;
}
.glow-one { background: var(--red); top: -180px; right: 8%; }
.glow-two { background: var(--blue); bottom: -220px; left: 4%; }
.hero-content { position: relative; z-index: 2; padding: 100px 0; }
.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .16em;
  font-weight: 900;
  color: #bfc4d0;
  margin-bottom: 15px;
}
.hero h1 {
  font-size: clamp(48px, 8vw, 92px);
  line-height: 1.02;
  margin: 0;
  font-weight: 900;
  letter-spacing: -.07em;
}
.hero-subtitle {
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 900;
  margin: 22px 0 10px;
  background: linear-gradient(100deg, #ff1010, #7c38b5, #1249ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-subtitle span { margin-left: 7px; font-size: .55em; color: #cbd0dc; }
.hero-copy { max-width: 600px; color: #b9bec9; font-size: 17px; margin: 22px 0 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 800;
  transition: transform .2s, box-shadow .2s, background .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn.primary {
  color: white;
  background: linear-gradient(110deg, var(--red), #7e25c0, var(--blue));
  box-shadow: 0 10px 30px rgba(18,73,255,.2);
}
.btn.secondary { border: 1px solid rgba(255,255,255,.25); color: white; }
.btn.outline { border: 1px solid #d7d9df; background: white; }

.notice-strip { background: linear-gradient(100deg, #ff1010, #7c20bb, #1249ff); color: white; }
.notice-inner { min-height: 64px; display: flex; align-items: center; gap: 20px; }
.notice-label { font-size: 12px; font-weight: 900; letter-spacing: .12em; opacity: .75; }
.notice-inner p { margin: 0; font-size: 14px; }

.section { padding: 110px 0; }
.section-dark { background: var(--dark); color: white; }
.section-heading { margin-bottom: 45px; }
.section-heading > span {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .16em;
  color: var(--blue);
}
.section-heading h2 { margin: 8px 0 0; font-size: clamp(34px, 5vw, 56px); letter-spacing: -.06em; line-height: 1.15; }
.section-heading.light > span { color: #8197ff; }

.about-grid { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 18px; }
.about-card, .activity-card, .contact-card {
  border: 1px solid var(--line);
  background: white;
  border-radius: 22px;
  padding: 32px;
}
.about-card.featured { background: var(--soft); }
.card-number { color: var(--blue); font-weight: 900; font-size: 13px; }
.about-card h3 { margin: 35px 0 12px; font-size: 24px; }
.about-card p { color: #5e6470; }
.slogan { font-size: 38px !important; font-weight: 900; margin-bottom: 0 !important; color: var(--ink) !important; }
.hanja { font-size: 15px; font-weight: 700; color: #9297a1 !important; }
.small-note { font-size: 12px; color: #8a8f9a !important; }

.people-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.person-card {
  border: 1px solid #202229;
  border-radius: 22px;
  padding: 34px;
  background: linear-gradient(145deg, #111318, #0b0c0f);
}
.person-card .role { color: #9299aa; font-size: 13px; font-weight: 700; }
.person-card h3 { margin: 20px 0 0; font-size: 28px; }

.activity-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.activity-card { min-height: 250px; }
.activity-icon {
  width: 48px; height: 48px; border-radius: 14px;
  display: grid; place-items: center;
  color: white; font-size: 22px; font-weight: 900;
  background: linear-gradient(135deg, var(--red), #7028bd, var(--blue));
}
.activity-card h3 { margin: 28px 0 8px; font-size: 21px; }
.activity-card p { color: var(--muted); margin: 0; }

.schedule-section { background: var(--soft); }
.timeline { max-width: 800px; border-left: 2px solid #dfe2ea; margin-left: 12px; }
.timeline-item { position: relative; padding: 0 0 35px 35px; }
.timeline-item:before {
  content: "";
  position: absolute;
  left: -9px; top: 2px;
  width: 16px; height: 16px; border-radius: 50%;
  background: linear-gradient(135deg, var(--red), var(--blue));
  box-shadow: 0 0 0 6px var(--soft);
}
.date { font-size: 13px; font-weight: 900; color: var(--blue); }
.timeline-content h3 { margin: 7px 0 4px; font-size: 23px; }
.timeline-content p { color: var(--muted); margin: 0; }

.join-section { padding-top: 80px; }
.join-box {
  padding: 50px;
  border-radius: 28px;
  color: white;
  background: linear-gradient(125deg, #101116 0%, #1a1b22 55%, #111217 100%);
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
  overflow: hidden; position: relative;
}
.join-box:after {
  content: ""; position: absolute; width: 280px; height: 280px; border-radius: 50%;
  right: -80px; top: -130px;
  background: linear-gradient(135deg, rgba(255,16,16,.8), rgba(18,73,255,.8));
  filter: blur(50px); opacity: .5;
}
.join-box > * { position: relative; z-index: 1; }
.dark-eyebrow { color: #9299aa; }
.join-box h2 { font-size: 42px; margin: 0 0 8px; letter-spacing: -.05em; }
.join-box p { color: #aeb4c1; margin: 0; }
.join-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.contact-section { padding-top: 50px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-card { display: flex; flex-direction: column; gap: 7px; }
.contact-card span { color: var(--muted); font-size: 13px; font-weight: 700; }
.contact-card a { font-size: 20px; font-weight: 800; word-break: break-word; }
.contact-card a:hover { color: var(--blue); }

.footer { border-top: 1px solid var(--line); background: #fff; }
.footer-inner { min-height: 130px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.footer-logo { width: 230px; max-width: 55vw; }
.footer p { color: #858a95; font-size: 12px; }

@media (max-width: 900px) {
  .nav { gap: 15px; }
  .about-grid { grid-template-columns: 1fr 1fr; }
  .about-card.featured { grid-column: 1 / -1; }
  .people-grid, .activity-grid { grid-template-columns: 1fr; }
  .join-box { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 720px) {
  .container { width: min(100% - 28px, 1180px); }
  .nav-wrap { min-height: 72px; }
  .brand img { width: 210px; }
  .menu-toggle { display: block; }
  .nav {
    position: absolute; top: 72px; left: 0; right: 0;
    padding: 18px 20px; background: rgba(255,255,255,.98);
    border-bottom: 1px solid var(--line);
    display: none; flex-direction: column; align-items: flex-start;
  }
  .nav.open { display: flex; }
  .hero { min-height: 590px; }
  .hero-content { padding: 75px 0; }
  .section { padding: 75px 0; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .notice-inner { gap: 12px; }
  .notice-inner p { font-size: 12px; }
  .join-box { padding: 32px 24px; }
  .join-box h2 { font-size: 34px; }
  .footer-inner { flex-direction: column; align-items: flex-start; justify-content: center; padding: 28px 0; }
}