:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --surface-alt: #f1f4f8;
  --text: #1a1f2c;
  --muted: #5f6b7a;
  --line: #dbe2ea;
  --primary: #0f4c81;
  --primary-strong: #08375f;
  --accent: #0a7f63;
  --radius: 14px;
  --shadow: 0 10px 26px rgba(14, 23, 38, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top right, #eef5ff 0%, var(--bg) 45%);
  line-height: 1.7;
}

a {
  color: var(--primary);
  text-decoration: none;
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 20px;
}

.brand {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 10px;
  font-weight: 700;
}

.main-nav {
  display: flex;
  gap: 18px;
  align-items: center;
}

.main-nav a {
  color: var(--muted);
  font-weight: 600;
}

.main-nav a.active,
.main-nav a:hover {
  color: var(--primary);
}

.hero {
  padding: 74px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: start;
}

.hero-card,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 36px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  background: #e8f2ff;
  border-radius: 99px;
  padding: 6px 12px;
  font-size: 0.84rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-top: 0;
}

h1 {
  font-size: clamp(1.75rem, 2.4vw, 2.7rem);
  margin: 16px 0;
}

h2 {
  font-size: clamp(1.35rem, 1.8vw, 1.9rem);
  margin-bottom: 10px;
}

h3 {
  font-size: 1.12rem;
  margin-bottom: 8px;
}

p {
  margin: 0 0 14px;
  color: #243042;
}

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

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 10px;
  border: 1px solid transparent;
  padding: 0 16px;
  font-weight: 700;
}

.btn.primary {
  background: var(--primary);
  color: #fff;
}

.btn.primary:hover {
  background: var(--primary-strong);
  color: #fff;
}

.btn.ghost {
  background: #fff;
  border-color: var(--line);
  color: var(--text);
}

.hero-aside {
  padding: 24px;
}

.metric {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 10px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}

.metric:last-child {
  border-bottom: 0;
}

.metric strong {
  font-size: 1.34rem;
  color: var(--primary-strong);
}

.section {
  padding: 16px 0 42px;
}

.section-head {
  margin-bottom: 16px;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.card ul,
.article-body ul {
  margin: 6px 0 0;
  padding-left: 18px;
}

.badge {
  display: inline-block;
  font-size: 0.78rem;
  background: #e9f8f4;
  color: #0a6d56;
  border: 1px solid #c8ebdf;
  border-radius: 999px;
  padding: 4px 10px;
  margin-bottom: 10px;
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.post-list .card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.post-meta {
  font-size: 0.87rem;
  color: var(--muted);
}

.article-shell {
  padding: 56px 0 44px;
}

.article {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
}

.article-body h2 {
  margin-top: 26px;
}

.article-body p {
  margin-bottom: 16px;
}

.notice {
  background: #eef7ff;
  border: 1px solid #d2e7fa;
  border-radius: 10px;
  padding: 12px 14px;
  color: #1b4d78;
  font-size: 0.95rem;
}

form {
  display: grid;
  gap: 12px;
}

label {
  font-weight: 700;
  font-size: 0.92rem;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  font: inherit;
  background: #fff;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.site-footer {
  margin-top: 32px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
}

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

small,
.small {
  color: var(--muted);
  font-size: 0.88rem;
}

@media (max-width: 900px) {
  .hero-grid,
  .grid.cols-3,
  .grid.cols-2,
  .split,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-card,
  .hero-aside,
  .article {
    padding: 24px;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding: 10px 0 16px;
  }

  .main-nav.open {
    display: flex;
  }

  .header-inner {
    flex-wrap: wrap;
    padding: 12px 0;
  }
}