* {
  box-sizing: border-box;
}

:root {
  --bg: #f7f9fc;
  --white: #ffffff;
  --text: #101827;
  --muted: #657086;
  --line: #dde5f0;
  --navy: #002e67;
  --teal: #00a99d;
  --blue: #155bd7;
  --soft-blue: #edf5ff;
  --soft-teal: #e9fbf8;
  --dark: #0b1730;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  word-break: keep-all;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand img {
  display: block;
  width: 172px;
  height: auto;
  max-height: 52px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--navy);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(78vh - 76px);
  display: flex;
  align-items: center;
  padding: 56px 0 56px;
  background:
    radial-gradient(circle at 20% 12%, rgba(0, 169, 157, 0.14), transparent 28%),
    radial-gradient(circle at 84% 12%, rgba(21, 91, 215, 0.13), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f4f8ff 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -8% -30% -8%;
  height: 42%;
  background: linear-gradient(135deg, rgba(0, 169, 157, 0.10), rgba(0, 46, 103, 0.08));
  transform: skewY(-4deg);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.section-label {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-label.light {
  color: #76f4e6;
}

h1 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(44px, 6.8vw, 78px);
  line-height: 1.06;
  letter-spacing: -0.075em;
}

.hero-line {
  max-width: 760px;
  margin: 28px auto 0;
  color: var(--muted);
  font-size: clamp(18px, 2.2vw, 23px);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 26px;
  border-radius: 999px;
  font-weight: 950;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: white;
  background: linear-gradient(135deg, var(--navy), var(--blue));
  box-shadow: 0 16px 34px rgba(0, 46, 103, 0.24);
}

.button.secondary {
  color: var(--navy);
  background: white;
  border-color: var(--line);
}

.section {
  padding: 88px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 58px;
  align-items: start;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.06em;
}

.about-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 19px;
}

.about-copy p + p {
  margin-top: 18px;
}

.passport-section,
.faq-section {
  background: var(--soft-blue);
}

.section-head {
  max-width: 780px;
  margin: 0 auto 42px;
  text-align: center;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card,
.step,
.faq-list details,
.contact-box {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: 0 20px 55px rgba(16, 24, 39, 0.07);
}

.card {
  min-height: 260px;
  padding: 32px;
}

.main-card {
  border-color: rgba(0, 169, 157, 0.34);
  box-shadow: 0 24px 60px rgba(0, 169, 157, 0.12);
}

.card-tag {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 7px 13px;
  border-radius: 999px;
  background: var(--soft-teal);
  color: #008f87;
  font-size: 12px;
  font-weight: 950;
}

.card h3,
.step h3 {
  margin: 0 0 12px;
  font-size: 25px;
  letter-spacing: -0.045em;
}

.card p,
.step p,
.contact-box p {
  margin: 0;
  color: var(--muted);
}

.pass-section {
  background:
    radial-gradient(circle at 86% 4%, rgba(0, 169, 157, 0.20), transparent 32%),
    linear-gradient(180deg, var(--dark) 0%, #071125 100%);
  color: white;
}

.pass-wrap {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 34px;
  align-items: start;
}

.pass-title p:last-child {
  margin: 22px 0 0;
  color: #d6e3f6;
  font-size: 18px;
}

.pass-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.pass-cards article {
  min-height: 310px;
  padding: 30px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.13);
}

.pass-cards h3 {
  margin: 0 0 18px;
  font-size: 24px;
  letter-spacing: -0.045em;
}

.pass-cards ul {
  margin: 0;
  padding-left: 20px;
  color: #dce8f8;
}

.pass-cards li + li {
  margin-top: 12px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.step {
  min-height: 230px;
  padding: 30px;
}

.step span {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--teal);
  font-weight: 950;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-list details {
  padding: 21px 24px;
}

.faq-list summary {
  cursor: pointer;
  font-size: 18px;
  font-weight: 950;
}

.faq-list p {
  margin: 14px 0 0;
  color: var(--muted);
}

.contact-section {
  background: linear-gradient(180deg, white 0%, #f7fbff 100%);
}

.contact-box {
  max-width: 880px;
  margin: 0 auto;
  padding: 50px 32px;
  text-align: center;
}

.contact-box p {
  max-width: 720px;
  margin: 18px auto 28px;
  font-size: 18px;
}

.site-footer {
  background: white;
  border-top: 1px solid var(--line);
  padding: 30px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
}

.footer-inner strong {
  color: var(--navy);
}

@media (max-width: 920px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .brand img {
    width: 150px;
    max-height: 48px;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 5px;
  }

  .hero {
    min-height: auto;
    padding: 76px 0 60px;
  }

  .about-grid,
  .cards,
  .pass-wrap,
  .pass-cards,
  .steps {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 66px 0;
  }

  .about-copy p,
  .contact-box p {
    font-size: 17px;
  }

  .pass-cards article {
    min-height: auto;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .brand img {
    width: 135px;
    max-height: 44px;
  }

  .nav-links {
    gap: 16px;
    font-size: 13px;
  }

  h1 {
    font-size: 39px;
  }

  h2 {
    font-size: 30px;
  }

  .hero-line {
    font-size: 17px;
  }

  .button {
    width: 100%;
  }

  .card,
  .step,
  .contact-box,
  .pass-cards article {
    padding: 24px;
  }
}