@font-face {
  font-family: "BaekpuroSans";
  src: url("/NotoSansKR-Variable.ttf") format("truetype");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --background: #0b0f14;
  --surface: #131a21;
  --surface-raised: #1b2630;
  --text: #f4f7f9;
  --muted: #adb8c2;
  --accent: #ff8a3d;
  --signal: #43c6d9;
  --stroke: #2b3944;
  --success: #45c879;
  --radius: 16px;
  --max-width: 1100px;
  font-family: "BaekpuroSans", "Apple SD Gothic Neo", system-ui, -apple-system,
    BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 12px max(20px, calc((100vw - var(--max-width)) / 2));
  border-bottom: 1px solid rgba(43, 57, 68, 0.86);
  background: rgba(11, 15, 20, 0.92);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 15px;
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 10px;
  background: var(--accent);
  color: #2a1306;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: -0.04em;
}

.status {
  padding: 5px 10px;
  border: 1px solid rgba(69, 200, 121, 0.38);
  border-radius: 999px;
  color: var(--success);
  font-size: 12px;
  font-weight: 700;
}

main,
footer {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.hero {
  padding: 88px 0 58px;
  border-bottom: 1px solid var(--stroke);
}

.eyebrow,
.section-number {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.16em;
}

h1 {
  max-width: 800px;
  margin: 0;
  font-size: clamp(38px, 7vw, 68px);
  line-height: 1.15;
  letter-spacing: -0.045em;
}

.lead {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2.1vw, 22px);
  line-height: 1.65;
  word-break: keep-all;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 32px;
  color: var(--muted);
  font-size: 13px;
}

.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 32px 0;
}

.summary article {
  min-height: 190px;
  padding: 24px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  background: var(--surface);
}

.summary-icon {
  display: inline-grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 10px;
  background: var(--surface-raised);
  color: var(--signal);
  font-size: 12px;
  font-weight: 850;
}

.summary h2 {
  margin: 22px 0 6px;
  font-size: 18px;
}

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

.content-grid {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: clamp(36px, 7vw, 88px);
  padding: 50px 0 90px;
}

.toc {
  position: sticky;
  top: 94px;
  align-self: start;
  display: grid;
  gap: 5px;
  padding: 18px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  background: var(--surface);
}

.toc strong {
  padding: 3px 10px 10px;
  font-size: 13px;
}

.toc a {
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

.toc a:hover,
.toc a:focus-visible {
  background: var(--surface-raised);
  color: var(--text);
  outline: none;
}

.policy {
  min-width: 0;
}

.policy section {
  padding: 38px 0 44px;
  border-bottom: 1px solid var(--stroke);
}

.policy section:first-child {
  padding-top: 0;
}

.policy h2 {
  margin: 0 0 18px;
  font-size: clamp(23px, 3vw, 30px);
  line-height: 1.35;
  letter-spacing: -0.025em;
}

.policy p {
  margin: 0 0 14px;
  color: var(--muted);
  word-break: keep-all;
}

.policy .section-number {
  margin-bottom: 5px;
  color: var(--signal);
}

.note {
  padding: 15px 17px;
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  background: rgba(255, 138, 61, 0.08);
  color: var(--text) !important;
  font-size: 14px;
}

.contact {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  margin: 3px 0 16px;
  padding: 0 18px;
  border-radius: 12px;
  background: var(--accent);
  color: #2a1306;
  font-weight: 800;
  text-decoration: none;
}

.contact:hover,
.contact:focus-visible {
  background: #ffa064;
  outline: 3px solid rgba(255, 138, 61, 0.28);
  outline-offset: 3px;
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 24px 0 42px;
  border-top: 1px solid var(--stroke);
  color: var(--muted);
  font-size: 13px;
}

footer a {
  color: var(--text);
}

@media (max-width: 760px) {
  .hero {
    padding-top: 58px;
  }

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

  .summary article {
    min-height: auto;
  }

  .content-grid {
    display: block;
    padding-top: 20px;
  }

  .toc {
    position: static;
    margin-bottom: 46px;
  }
}

@media (max-width: 440px) {
  body {
    font-size: 15px;
  }

  .site-header {
    padding-inline: 16px;
  }

  .brand {
    font-size: 13px;
  }

  .status {
    display: none;
  }

  main,
  footer {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .meta {
    display: grid;
  }

  footer {
    display: grid;
    gap: 8px;
  }
}

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