:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --surface: #ffffff;
  --text: #1d2525;
  --muted: #687273;
  --line: #dfe5e1;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --soft: #e7f4f1;
  --warm: #f4efe5;
  --shadow: 0 18px 45px rgba(29, 37, 37, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, "Noto Sans KR", "Malgun Gothic", sans-serif;
  line-height: 1.65;
  letter-spacing: 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 248, 245, 0.96);
  backdrop-filter: blur(14px);
}

.header-inner,
.brand {
  width: min(680px, 100%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 24px;
}

.brand {
  display: inline-block;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.25;
}

.site-header > .brand {
  padding: 18px 24px;
  font-size: 20px;
}

.home,
.page {
  width: min(680px, 100%);
  margin: 0 auto;
  padding: 8px 24px 80px;
}

.home-intro {
  max-width: 720px;
  margin-bottom: 34px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 800;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 16px;
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.12;
}

h2 {
  margin-bottom: 12px;
  font-size: 25px;
  line-height: 1.3;
}

.home-intro p:last-child,
.lead {
  color: var(--muted);
  font-size: 18px;
}

.acquisition-only {
  display: none;
}

.show-acquisition .acquisition-only {
  display: block;
}

.traffic-ad {
  min-height: 90px;
  margin: 12px 0 18px;
  overflow: hidden;
}

.page > .traffic-ad {
  margin-top: 6px;
}

.apply-button {
  min-height: 52px;
  align-items: center;
  justify-content: center;
  margin: 24px 0;
  padding: 13px 18px;
  border-radius: 8px;
  background: #d92323;
  color: #ffffff;
  font-size: 24px;
  line-height: 1.25;
  font-weight: 800;
  text-align: center;
}

.apply-button:hover,
.apply-button:focus-visible {
  background: #b91c1c;
  outline: none;
}

.show-acquisition .apply-button {
  display: flex;
}

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

.info-card {
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: transform 160ms ease, border-color 160ms ease;
}

.info-card:hover,
.info-card:focus-visible {
  border-color: var(--accent);
  transform: translateY(-3px);
  outline: none;
}

.card-icon {
  display: inline-grid;
  width: 48px;
  height: 48px;
  place-items: center;
  align-self: start;
  border-radius: 8px;
  background: var(--soft);
  color: var(--accent-dark);
  font-weight: 800;
}

.card-title {
  margin-top: 28px;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
}

.card-copy {
  margin-top: 8px;
  color: var(--muted);
}

.card-button {
  display: inline-flex;
  width: 100%;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  align-self: end;
  margin-top: 24px;
  border: 1px solid #c8d5e6;
  border-radius: 8px;
  background: #f8fbff;
  color: #0647a5;
  font-weight: 800;
}

.info-card:hover .card-button,
.info-card:focus-visible .card-button {
  border-color: #8fb1df;
  background: #eef6ff;
}

.breadcrumb {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 8px;
  margin-top: 0;
  color: var(--muted);
  font-size: 15px;
  white-space: nowrap;
}

.breadcrumb a {
  color: var(--accent-dark);
  font-weight: 700;
}

.breadcrumb a::after {
  content: "/";
  margin-left: 8px;
  color: var(--muted);
  font-weight: 400;
}

.content {
  max-width: 780px;
}

.content section {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.content ol {
  margin: 0;
  padding-left: 22px;
}

.content li + li {
  margin-top: 8px;
}

.section-intro {
  color: var(--muted);
}

.method-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.method-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.method-card strong {
  display: block;
  margin-bottom: 12px;
  font-size: 18px;
}

.method-card p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.notice {
  margin: 16px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--accent);
  background: var(--soft);
  color: var(--accent-dark);
  font-size: 15px;
}

.faq-list {
  display: grid;
  gap: 10px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 800;
}

details p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--muted);
}

.page-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.page-links a {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border: 1px solid #c8d5e6;
  border-radius: 8px;
  background: #f8fbff;
  color: #0647a5;
  font-weight: 800;
  text-align: center;
}

.page-links a:hover,
.page-links a:focus-visible {
  border-color: #8fb1df;
  background: #eef6ff;
  outline: none;
}

.site-footer {
  width: min(680px, 100%);
  margin: 0 auto;
  padding: 28px 24px 38px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer p + p {
  margin-top: 8px;
}

@media (max-width: 820px) {
  .info-card {
    min-height: 190px;
  }
}

@media (max-width: 560px) {
  .header-inner {
    align-items: flex-start;
    gap: 10px;
    padding: 15px 18px;
  }

  .brand {
    padding: 15px 18px;
  }

  .header-inner .brand {
    padding: 0;
    font-size: 20px;
  }

  .breadcrumb {
    font-size: 14px;
  }

  .home,
  .page {
    padding: 12px 18px 60px;
  }

  .traffic-ad {
    min-height: 72px;
    margin: 12px 0 18px;
  }

  .page > .traffic-ad {
    margin-top: 8px;
  }

  h1 {
    font-size: 36px;
  }

  .page-links {
    display: grid;
    grid-template-columns: 1fr;
  }

  .site-footer {
    padding-right: 18px;
    padding-left: 18px;
  }
}