:root {
  --ink: #111412;
  --ink-soft: #1b211e;
  --paper: #f5f1e8;
  --paper-soft: #e7e0d1;
  --line: rgba(245, 241, 232, 0.16);
  --line-dark: rgba(17, 20, 18, 0.14);
  --green: #7cc58f;
  --green-deep: #1e5a3d;
  --silver: #a9b4ae;
  --muted: #6f756f;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  color: var(--ink);
  background: var(--paper);
  font-family: Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-size: 16px;
  line-height: 1.65;
}

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

.site-shell {
  min-height: 100vh;
  background: var(--paper);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(245, 241, 232, 0.14);
  background: rgba(17, 20, 18, 0.9);
  color: var(--paper);
  backdrop-filter: blur(16px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  min-height: 68px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: grid;
  gap: 1px;
}

.brand strong {
  font-size: 18px;
  letter-spacing: 0;
}

.brand span {
  color: var(--silver);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: rgba(245, 241, 232, 0.84);
  font-size: 14px;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--green);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid rgba(124, 197, 143, 0.45);
  color: var(--green);
}

.hero {
  position: relative;
  min-height: calc(100vh - 68px);
  overflow: hidden;
  color: var(--paper);
  background: var(--ink);
}

.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(17, 20, 18, 0.95) 0%, rgba(17, 20, 18, 0.78) 42%, rgba(17, 20, 18, 0.36) 100%),
    url("./hero-bg.png") center / cover no-repeat;
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(124, 197, 143, 0.72), transparent);
}

.hero-inner {
  position: relative;
  display: grid;
  align-content: center;
  max-width: var(--max);
  min-height: calc(100vh - 68px);
  margin: 0 auto;
  padding: 76px 24px 110px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.hero h1 {
  max-width: 780px;
  margin-bottom: 18px;
  font-size: clamp(52px, 9vw, 112px);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero .k-name {
  display: block;
  margin-top: 16px;
  color: rgba(245, 241, 232, 0.8);
  font-size: clamp(22px, 3.5vw, 38px);
  font-weight: 600;
}

.hero-copy {
  max-width: 600px;
  margin-bottom: 34px;
  color: rgba(245, 241, 232, 0.82);
  font-size: 20px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  background: rgba(245, 241, 232, 0.08);
  color: var(--paper);
  font-weight: 700;
}

.button.primary {
  border-color: var(--green);
  background: var(--green);
  color: var(--ink);
}

.section {
  padding: 86px 24px;
}

.section.dark {
  background: var(--ink);
  color: var(--paper);
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 0.55fr);
  gap: 56px;
  align-items: end;
  margin-bottom: 36px;
}

.section h2,
.page-hero h1 {
  margin-bottom: 0;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.05;
  letter-spacing: 0;
}

.section-head p,
.lead {
  color: var(--muted);
  font-size: 18px;
}

.dark .section-head p,
.dark .lead {
  color: rgba(245, 241, 232, 0.72);
}

.service-grid,
.program-grid,
.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-dark);
}

.dark .service-grid,
.dark .program-grid,
.dark .metric-grid {
  background: var(--line);
}

.service,
.program,
.metric {
  min-height: 230px;
  padding: 28px;
  background: var(--paper);
}

.dark .service,
.dark .program,
.dark .metric {
  background: var(--ink-soft);
}

.service .num,
.program .num {
  color: var(--green-deep);
  font-size: 13px;
  font-weight: 800;
}

.dark .service .num,
.dark .program .num {
  color: var(--green);
}

.service h3,
.program h3 {
  margin: 20px 0 12px;
  font-size: 22px;
  line-height: 1.2;
}

.service p,
.program p,
.metric p {
  margin-bottom: 0;
  color: var(--muted);
}

.dark .service p,
.dark .program p,
.dark .metric p {
  color: rgba(245, 241, 232, 0.66);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 0.55fr);
  gap: 64px;
  align-items: start;
}

.statement {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.15;
}

.fact-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.fact-list li {
  padding: 16px 0;
  border-top: 1px solid var(--line-dark);
}

.dark .fact-list li {
  border-top-color: var(--line);
}

.page-hero {
  background: var(--ink);
  color: var(--paper);
}

.page-hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 96px 24px 74px;
}

.page-hero p {
  max-width: 680px;
  margin: 22px 0 0;
  color: rgba(245, 241, 232, 0.74);
  font-size: 20px;
}

.timeline {
  display: grid;
  gap: 1px;
  background: var(--line-dark);
}

.step {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 32px;
  padding: 28px;
  background: var(--paper);
}

.step strong {
  color: var(--green-deep);
}

.step h3 {
  margin-bottom: 8px;
}

.profile-block {
  display: grid;
  grid-template-columns: minmax(0, 0.55fr) minmax(0, 1fr);
  gap: 54px;
  align-items: start;
}

.portrait {
  min-height: 440px;
  border: 1px solid var(--line-dark);
  background:
    linear-gradient(150deg, rgba(124, 197, 143, 0.18), transparent 42%),
    var(--ink);
  color: var(--paper);
  padding: 28px;
}

.portrait strong {
  display: block;
  margin-top: 270px;
  font-size: 28px;
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.7fr);
  gap: 1px;
  background: var(--line-dark);
}

.contact-panel > div {
  padding: 36px;
  background: var(--paper);
}

.contact-link {
  display: block;
  padding: 18px 0;
  border-top: 1px solid var(--line-dark);
  font-size: 20px;
  font-weight: 800;
}

.footer {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: rgba(245, 241, 232, 0.68);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 24px;
  gap: 20px;
  font-size: 14px;
}

@media (max-width: 860px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding: 16px 20px;
  }

  .nav-links {
    width: 100%;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .nav-cta {
    min-width: max-content;
  }

  .hero-inner {
    min-height: 720px;
  }

  .section-head,
  .split,
  .profile-block,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .program-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .step {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .section,
  .page-hero-inner {
    padding-right: 18px;
    padding-left: 18px;
  }

  .hero-copy,
  .page-hero p {
    font-size: 18px;
  }

  .service,
  .program,
  .metric,
  .contact-panel > div {
    padding: 22px;
  }
}