:root {
  color-scheme: light dark;
  --bg: #f4fbfb;
  --surface: rgba(255, 255, 255, 0.94);
  --surface-strong: #ffffff;
  --text: #10252b;
  --muted: #5e7379;
  --line: #d5e7e9;
  --primary: #087f92;
  --primary-strong: #075f6f;
  --soft: #dff7fa;
  --accent: #f5c84c;
  --success: #08795d;
  --shadow: 0 24px 70px rgba(10, 63, 72, 0.13);
  font-family:
    Inter, Pretendard, "Noto Sans KR", ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 82% 0%, rgba(33, 190, 208, 0.18), transparent 30rem),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a {
  color: var(--primary);
}

a:hover {
  color: var(--primary-strong);
}

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(213, 231, 233, 0.84);
  background: rgba(244, 251, 251, 0.88);
  backdrop-filter: blur(18px);
}

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

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand img {
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 10px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.94rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
}

.language-switch,
.mobile-language-switch {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-strong);
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 760;
  padding: 7px 12px;
  text-decoration: none;
}

.mobile-language-switch {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 58px;
  align-items: center;
  padding: 88px 0 72px;
}

.eyebrow,
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(8, 127, 146, 0.22);
  border-radius: 999px;
  background: var(--soft);
  color: var(--primary-strong);
  font-size: 0.84rem;
  font-weight: 760;
  padding: 7px 12px;
}

h1,
h2,
h3 {
  line-height: 1.14;
  letter-spacing: -0.04em;
}

h1 {
  max-width: 780px;
  margin: 22px 0;
  font-size: clamp(2.7rem, 6vw, 4.8rem);
}

h2 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  margin: 0 0 10px;
  font-size: 1.25rem;
}

.lead {
  max-width: 740px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.hero-actions,
.locale-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface-strong);
  color: var(--text);
  font-weight: 740;
  padding: 10px 18px;
  text-decoration: none;
}

.button-primary {
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
}

.button-primary:hover {
  background: var(--primary-strong);
  color: #ffffff;
}

.product-visual {
  position: relative;
  overflow: hidden;
  padding: 18px 18px 0;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 32px;
  background: linear-gradient(145deg, #063944, #087f92 65%, #25c3d5);
  box-shadow: var(--shadow);
}

.product-visual::before {
  display: block;
  width: 8px;
  height: 8px;
  margin: 0 0 12px 4px;
  border-radius: 999px;
  background: #8be7ef;
  box-shadow: 15px 0 rgba(139, 231, 239, 0.64), 30px 0 rgba(139, 231, 239, 0.34);
  content: "";
}

.product-visual img {
  display: block;
  width: 100%;
  border-radius: 18px 18px 0 0;
}

.section {
  padding: 72px 0;
}

.section-intro {
  max-width: 760px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 1.08rem;
}

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

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

.card,
.policy-section,
.support-block {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: 0 14px 40px rgba(17, 92, 103, 0.06);
}

.card {
  padding: 26px;
}

.card p,
.policy-section p,
.support-block p,
.muted {
  color: var(--muted);
}

.number {
  display: grid;
  width: 38px;
  height: 38px;
  margin-bottom: 20px;
  place-items: center;
  border-radius: 12px;
  background: var(--soft);
  color: var(--primary-strong);
  font-weight: 800;
}

.benefit {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 32px;
  align-items: stretch;
  border-radius: 30px;
  background: linear-gradient(135deg, #063944, #087f92);
  color: #ffffff;
  padding: 42px;
}

.benefit p {
  color: #d7f1f3;
}

.choice-stack {
  display: grid;
  gap: 14px;
}

.choice {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 17px;
  background: rgba(255, 255, 255, 0.1);
  padding: 18px;
}

.choice strong {
  display: block;
  margin-bottom: 5px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.trust-row .pill {
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.page-title {
  max-width: 860px;
  padding: 76px 0 38px;
}

.page-title h1 {
  font-size: clamp(2.35rem, 5vw, 4rem);
}

.policy-list,
.support-list {
  display: grid;
  gap: 16px;
  padding-bottom: 72px;
}

.policy-section,
.support-block {
  padding: 26px 28px;
}

.policy-section p:last-child,
.support-block p:last-child {
  margin-bottom: 0;
}

.support-block ol,
.support-block ul {
  padding-left: 22px;
}

details {
  border-top: 1px solid var(--line);
  padding: 16px 0;
}

details:first-of-type {
  border-top: 0;
}

summary {
  cursor: pointer;
  font-weight: 760;
}

.callout {
  border-left: 4px solid var(--success);
  border-radius: 8px 18px 18px 8px;
  background: rgba(8, 121, 93, 0.08);
  padding: 16px 18px;
}

.contact-template {
  margin-top: 26px;
  border: 1px solid color-mix(in srgb, var(--primary) 24%, var(--line));
  border-radius: 20px;
  background: color-mix(in srgb, var(--soft) 54%, var(--surface-strong));
  padding: clamp(20px, 4vw, 30px);
}

.contact-template pre {
  overflow-x: auto;
  margin: 20px 0 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-strong);
  color: var(--text);
  padding: 20px;
  line-height: 1.7;
  white-space: pre-wrap;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 30px 0 46px;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
}

.footer-row nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.language-hub {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 48px 20px;
}

.language-panel {
  width: min(760px, 100%);
  border: 1px solid var(--line);
  border-radius: 32px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: clamp(28px, 6vw, 58px);
}

.hub-brand {
  width: fit-content;
  margin-bottom: 34px;
}

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

.language-panel h1 {
  margin-bottom: 18px;
  font-size: clamp(2.25rem, 6vw, 4.35rem);
}

.language-panel h1 span {
  color: var(--primary);
}

.language-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 34px;
}

.language-choice {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface-strong);
  color: var(--text);
  padding: 20px;
  text-decoration: none;
  transition:
    border-color 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.language-choice:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  color: var(--text);
  box-shadow: 0 16px 30px rgba(10, 63, 72, 0.12);
}

.language-choice strong,
.language-choice small {
  display: block;
}

.language-choice small {
  margin-top: 3px;
  color: var(--muted);
}

.language-code {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 14px;
  background: var(--soft);
  color: var(--primary-strong);
  font-size: 0.78rem;
  font-weight: 820;
}

.hub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
  font-size: 0.9rem;
}

html[lang="ko"] h1,
html[lang="ko"] h2,
html[lang="ko"] h3,
html[lang="ko"] p,
html[lang="ko"] li,
html[lang="ko"] label {
  word-break: keep-all;
  overflow-wrap: break-word;
}

@media (max-width: 920px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 820px) {
  .hero,
  .benefit {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 36px;
    padding-top: 64px;
  }

  .nav-links {
    display: none;
  }

  .mobile-language-switch {
    display: inline-flex;
  }
}

@media (max-width: 620px) {
  .grid,
  .grid-2,
  .language-choice-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a171b;
    --surface: rgba(16, 38, 44, 0.94);
    --surface-strong: #142d34;
    --text: #ebf9fa;
    --muted: #a8c3c7;
    --line: #2b4b52;
    --soft: #123c45;
    --primary: #67d9e5;
    --primary-strong: #93eaf1;
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
  }

  .site-header {
    background: rgba(10, 23, 27, 0.88);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .language-choice {
    transition: none;
  }
}