:root {
  color-scheme: light;
  --canvas: #f5f8fb;
  --surface: #ffffff;
  --ink: #1d2833;
  --muted: #63717e;
  --line: #dfe7ed;
  --sky: #75b9ea;
  --sky-dark: #176ea8;
  --coral: #e87d6a;
  --warning: #fff4d6;
  --warning-line: #e4ba53;
  --shadow: 0 16px 50px rgba(45, 70, 90, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 8% 0%, rgba(117, 185, 234, 0.2), transparent 34rem),
    var(--canvas);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  word-break: keep-all;
}

a {
  color: var(--sky-dark);
  text-underline-offset: 3px;
}

a:focus-visible,
button:focus-visible {
  border-radius: 4px;
  outline: 3px solid rgba(23, 110, 168, 0.35);
  outline-offset: 3px;
}

.site-header {
  border-bottom: 1px solid rgba(223, 231, 237, 0.85);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
}

.nav,
.page,
.footer-inner {
  width: min(100% - 40px, 860px);
  margin-inline: auto;
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
  font-size: 14px;
}

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

.page {
  padding-block: 64px 88px;
}

.hero {
  padding-block: 26px 24px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--sky-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.3;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(36px, 8vw, 62px);
}

h2 {
  margin: 54px 0 16px;
  font-size: 25px;
}

h3 {
  margin: 30px 0 10px;
  font-size: 18px;
}

p,
ul,
ol {
  margin-block: 0 16px;
}

ul,
ol {
  padding-left: 24px;
}

.lede {
  max-width: 680px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 19px;
}

.meta {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.draft-warning {
  margin: 0 0 32px;
  padding: 16px 18px;
  border: 1px solid var(--warning-line);
  border-radius: 14px;
  background: var(--warning);
  color: #6f5316;
  font-size: 14px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.card,
.panel {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card {
  min-height: 210px;
  padding: 24px;
  color: var(--ink);
  text-decoration: none;
}

.card:hover {
  border-color: var(--sky);
  transform: translateY(-2px);
}

.card strong {
  display: block;
  margin-bottom: 9px;
  font-size: 19px;
}

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

.card .arrow {
  display: block;
  margin-top: 26px;
  color: var(--sky-dark);
  font-weight: 800;
}

.panel {
  margin-block: 24px;
  padding: 24px;
}

.panel h2,
.panel h3 {
  margin-top: 0;
}

.data-table {
  width: 100%;
  margin-block: 20px 28px;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 13px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--muted);
  font-weight: 700;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 14px;
  background: var(--sky-dark);
  color: white;
  font-weight: 800;
  text-decoration: none;
}

.note {
  padding-left: 16px;
  border-left: 3px solid var(--sky);
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer-inner {
  padding-block: 30px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 720px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 18px;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .page {
    padding-top: 42px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .data-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}