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

body {
  font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif;
  background: #f4f7fb;
  color: #172033;
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
}

.top-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(40, 61, 92, 0.12);
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: #123b63;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
  font-weight: 700;
  color: #43536c;
}

.nav a:hover {
  color: #0d74c9;
}

.hero {
  max-width: 1180px;
  margin: 38px auto 0;
  padding: 70px 22px;
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 34px;
  align-items: center;
}

.hero-text {
  padding: 48px;
  border-radius: 34px;
  background:
    radial-gradient(circle at 20% 20%, rgba(50, 139, 255, 0.2), transparent 34%),
    linear-gradient(135deg, #102947, #1e5f8f 55%, #2fb7aa);
  color: white;
  box-shadow: 0 28px 70px rgba(22, 66, 110, 0.28);
}

.eyebrow {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 52px;
  line-height: 1.12;
  letter-spacing: -2px;
  margin-bottom: 22px;
}

.hero-desc {
  max-width: 640px;
  font-size: 17px;
  color: rgba(255, 255, 255, 0.86);
  margin-bottom: 30px;
}

.hero-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.26);
  color: white;
  font-weight: 800;
}

.btn.primary {
  background: #ffffff;
  color: #123b63;
}

.btn:hover {
  transform: translateY(-2px);
  transition: 0.2s ease;
}

.hero-panel {
  border-radius: 34px;
  padding: 34px;
  background: #ffffff;
  border: 1px solid rgba(35, 64, 99, 0.1);
  box-shadow: 0 22px 50px rgba(33, 57, 88, 0.12);
}

.hero-panel span {
  display: block;
  font-size: 13px;
  font-weight: 900;
  color: #0d74c9;
  margin-bottom: 12px;
}

.hero-panel strong {
  display: block;
  font-size: 28px;
  line-height: 1.3;
  letter-spacing: -1px;
  color: #102947;
  margin-bottom: 12px;
}

.hero-panel p {
  color: #65748c;
  margin-bottom: 20px;
}

.sample-url {
  padding: 13px 15px;
  margin-top: 10px;
  border-radius: 14px;
  background: #f0f6ff;
  border: 1px solid #dceaff;
  color: #164b7d;
  font-size: 14px;
  font-weight: 800;
}

.summary {
  max-width: 1180px;
  margin: 0 auto 34px;
  padding: 0 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.summary div {
  background: white;
  border-radius: 24px;
  padding: 24px;
  border: 1px solid rgba(35, 64, 99, 0.1);
  box-shadow: 0 14px 32px rgba(33, 57, 88, 0.08);
}

.summary strong {
  display: block;
  font-size: 28px;
  color: #102947;
}

.summary span {
  color: #65748c;
  font-weight: 700;
}

.main-cards {
  max-width: 1180px;
  margin: 0 auto 34px;
  padding: 0 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.big-card {
  min-height: 250px;
  padding: 30px;
  border-radius: 30px;
  color: white;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 55px rgba(31, 58, 92, 0.22);
}

.big-card::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  right: -50px;
  bottom: -60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.big-card span {
  display: inline-block;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 1.5px;
  margin-bottom: 18px;
  opacity: 0.86;
}

.big-card h2 {
  font-size: 32px;
  letter-spacing: -1px;
  margin-bottom: 14px;
}

.big-card p {
  color: rgba(255, 255, 255, 0.86);
  font-weight: 600;
}

.seoul-card {
  background: linear-gradient(135deg, #123b63, #2879c5);
}

.gyeonggi-card {
  background: linear-gradient(135deg, #23425f, #2fb7aa);
}

.incheon-card {
  background: linear-gradient(135deg, #2d3b78, #7b6ee6);
}

.region-section {
  max-width: 1180px;
  margin: 34px auto;
  padding: 42px 22px;
}

.dark-section {
  max-width: none;
  background: #102947;
  padding: 64px 22px;
}

.dark-section .section-title,
.dark-section .region-grid {
  max-width: 1136px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  margin-bottom: 24px;
}

.section-title p {
  font-size: 13px;
  font-weight: 900;
  color: #0d74c9;
  letter-spacing: 1.2px;
  margin-bottom: 6px;
}

.section-title h2 {
  font-size: 34px;
  color: #102947;
  letter-spacing: -1.2px;
}

.dark-section .section-title h2 {
  color: #ffffff;
}

.dark-section .section-title p {
  color: #6bd6ff;
}

.region-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.region-grid a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid rgba(35, 64, 99, 0.1);
  color: #21344f;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(33, 57, 88, 0.06);
}

.region-grid a:hover {
  background: #0d74c9;
  color: #ffffff;
  transform: translateY(-2px);
  transition: 0.2s ease;
}

.dark-section .region-grid a {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  box-shadow: none;
}

.dark-section .region-grid a:hover {
  background: #2fb7aa;
  color: #ffffff;
}

.guide {
  max-width: 1180px;
  margin: 34px auto 70px;
  padding: 0 22px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.guide-grid div {
  background: #ffffff;
  border-radius: 26px;
  padding: 28px;
  border: 1px solid rgba(35, 64, 99, 0.1);
  box-shadow: 0 16px 36px rgba(33, 57, 88, 0.08);
}

.guide-grid strong {
  display: inline-flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 15px;
  background: #e8f4ff;
  color: #0d74c9;
  font-weight: 900;
  margin-bottom: 18px;
}

.guide-grid h3 {
  font-size: 21px;
  color: #102947;
  margin-bottom: 10px;
}

.guide-grid p {
  color: #65748c;
}

.footer {
  padding: 36px 22px;
  text-align: center;
  background: #0b1d31;
  color: white;
}

.footer p {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 6px;
}

.footer span {
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 34px;
  }

  .hero h1 {
    font-size: 40px;
  }

  .summary,
  .main-cards,
  .guide-grid {
    grid-template-columns: 1fr;
  }

  .region-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 620px) {
  .header-inner {
    align-items: flex-start;
    gap: 12px;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero-text {
    padding: 32px 24px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .region-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-title h2 {
    font-size: 28px;
  }
}