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

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #222;
  background: #0B1F3A;
}

/* 상단 헤더 (로고 + 메뉴). 실제 로고 이미지가 준비되면
   .logo-mark 텍스트를 <img>로 교체하세요. */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #fff;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.logo-mark {
  font-size: 18px;
  font-weight: 800;
  color: #0B1F3A;
  letter-spacing: -0.01em;
}

.logo-divider {
  width: 1px;
  height: 24px;
  background: #DDE3EA;
}

.logo-sub {
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
  color: #2563EB;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  gap: 32px;
}

.site-nav a {
  font-size: 15px;
  font-weight: 600;
  color: #444;
  text-decoration: none;
  transition: color .15s ease;
}

.site-nav a:hover {
  color: #0B1F3A;
}

.hero {
  text-align: center;
  padding: 48px 20px 32px;
  color: #fff;
  background: linear-gradient(135deg, #0B1F3A, #1E3A5F);
}

.hero h1 {
  font-size: clamp(24px, 5vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero .sub {
  margin-top: 10px;
  font-size: 15px;
  color: rgba(255,255,255,.75);
}

.banner-list {
  display: flex;
  flex-direction: column;
}

.banner-item + .banner-item {
  margin-top: 8px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,.08);
}

.info {
  max-width: 640px;
  margin: 0 auto;
  padding: 28px 24px 48px;
  text-align: center;
}

.info-title {
  font-size: clamp(22px, 3.2vw, 28px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
}

.info-meta {
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,.55);
}

.info-desc {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255,255,255,.8);
}

.info-cta {
  display: inline-block;
  margin-top: 24px;
  padding: 12px 32px;
  border-radius: 999px;
  background: var(--accent, #2563EB);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: opacity .2s ease;
}

.info-cta:hover {
  opacity: .85;
}

.info-cta-disabled {
  background: rgba(255,255,255,.12);
  color: rgba(255,255,255,.55);
  cursor: default;
}

.info-cta-disabled:hover {
  opacity: 1;
}

.accent-blue   { --accent: #2563EB; }
.accent-teal   { --accent: #0EA5A5; }
.accent-orange { --accent: #E0641F; }

/* 배너 1,2,3 전부 실제 행사 이미지. 이미지 자체에 문구가 포함되어 있어
   별도 텍스트 오버레이 없음. 이미지 교체 시 url() 경로만 새 파일로 바꾸면 됩니다.
   배너2는 사이트 오픈 전이라 <a>가 아닌 <div>라 클릭/hover 반응 없음. */
.banner {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 1;
  background-size: cover;
  background-position: center;
  transition: filter .2s ease;
}

a.banner:hover {
  filter: brightness(1.03);
}

.banner-1,
.banner-2 {
  aspect-ratio: 1920 / 700;
}

.banner-1 { background-image: url("../images/bg_1.png"); }
.banner-2 { background-image: url("../images/bg_2.jpg"); }
.banner-3 { background-image: url("../images/bg_3.jpg"); }

/* 문의하기 */
.contact {
  padding: 64px 20px 72px;
  background: #0B1F3A;
  border-top: 1px solid rgba(255,255,255,.08);
}

.contact-inner {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}

.contact-title {
  font-size: clamp(22px, 3.2vw, 28px);
  font-weight: 800;
  color: #fff;
}

.contact-desc {
  margin-top: 10px;
  font-size: 15px;
  color: rgba(255,255,255,.65);
}

.contact-form {
  margin-top: 32px;
  text-align: left;
}

.form-row {
  display: flex;
  gap: 16px;
}

.form-row .form-group {
  flex: 1;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,.75);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 8px;
  background: rgba(255,255,255,.06);
  color: #fff;
  font-family: inherit;
  font-size: 15px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,.35);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #2563EB;
  background: rgba(255,255,255,.1);
}

.form-group textarea {
  resize: vertical;
}

.contact-submit {
  display: inline-block;
  margin-top: 8px;
  padding: 14px 36px;
  border: none;
  border-radius: 999px;
  background: #2563EB;
  color: #fff;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: opacity .2s ease;
}

.contact-submit:hover {
  opacity: .88;
}

.contact-links {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.board-back {
  color: rgba(255,255,255,.6);
  font-size: 14px;
  text-decoration: none;
}

.board-back:hover {
  color: #fff;
}

/* 푸터 */
.site-footer {
  padding: 40px 20px;
  background: #08182E;
}

.footer-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.footer-logo {
  font-size: 16px;
  font-weight: 800;
  color: #fff;
}

.footer-org,
.footer-contact {
  margin-top: 10px;
  font-size: 13px;
  color: rgba(255,255,255,.55);
}

.footer-copy {
  margin-top: 18px;
  font-size: 12px;
  color: rgba(255,255,255,.35);
}

@media (max-width: 480px) {
  .header-inner { height: 60px; padding: 0 16px; }
  .logo-mark { font-size: 15px; }
  .logo-sub { display: none; }
  .logo-divider { display: none; }
  .site-nav { gap: 20px; }
  .site-nav a { font-size: 14px; }

  .form-row { flex-direction: column; gap: 0; }
}