:root {
  color-scheme: dark;
  --bg: #081018;
  --bg-2: #0d1620;
  --surface: rgba(12, 18, 28, 0.76);
  --surface-strong: rgba(16, 24, 36, 0.94);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.15);
  --text: #f2f6f8;
  --muted: #aab6c2;
  --subtle: #7a8794;
  --accent: #e35b52;
  --accent-soft: rgba(227, 91, 82, 0.14);
  --accent-strong: #ff7a70;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.34);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  color: var(--text);
  background:
    radial-gradient(circle at 14% 18%, rgba(227, 91, 82, 0.16), transparent 24rem),
    radial-gradient(circle at 82% 16%, rgba(92, 128, 171, 0.12), transparent 22rem),
    radial-gradient(circle at 82% 84%, rgba(53, 98, 136, 0.12), transparent 28rem),
    linear-gradient(180deg, #091019 0%, #070d14 100%);
  font-family:
    "Pretendard",
    "Apple SD Gothic Neo",
    "Noto Sans KR",
    "Segoe UI",
    sans-serif;
  letter-spacing: -0.01em;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.08));
  opacity: 0.22;
}

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

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

.document-shell {
  position: relative;
  width: min(1140px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.document-topbar {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.document-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: -0.035em;
}

.document-brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, #27323d, #111820);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
  color: #fff;
  font-size: 14px;
}

.document-brand__name {
  font-size: 19px;
}

.document-brand__name span {
  color: var(--muted);
  font-weight: 500;
}

.document-topbar__meta {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.document-topbar__meta strong {
  color: var(--text);
  font-weight: 700;
}

.document-lang {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.document-lang__link {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    color 180ms ease;
}

.document-lang__link:hover,
.document-lang__link:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  outline: none;
}

.document-lang__link[aria-current="page"] {
  border-color: rgba(227, 91, 82, 0.35);
  background: rgba(227, 91, 82, 0.12);
  color: #ffe0dd;
}

.document-main {
  flex: 1;
  display: grid;
  gap: 20px;
  padding: 30px 0 50px;
}

.document-hero {
  display: grid;
  gap: 18px;
  padding: 26px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02)),
    var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.document-date {
  margin: 0;
  color: #d98d87;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.document-title {
  margin: 0;
  font-size: clamp(34px, 4.6vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.03em;
  font-weight: 650;
}

.document-lede {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
  word-break: keep-all;
}

.document-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: start;
  min-height: 34px;
  padding: 0 13px;
  border-radius: 999px;
  border: 1px solid rgba(227, 91, 82, 0.24);
  background: var(--accent-soft);
  color: #f7c7c2;
  font-size: 13px;
  font-weight: 700;
}

.document-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(227, 91, 82, 0.14);
}

.document-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.document-nav__link {
  min-height: 36px;
  padding: 0 13px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    color 180ms ease;
}

.document-nav__link:hover,
.document-nav__link:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  outline: none;
}

.document-nav__link[aria-current="page"] {
  border-color: rgba(227, 91, 82, 0.35);
  background: rgba(227, 91, 82, 0.12);
  color: #ffe0dd;
}

.document-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.85fr);
  gap: 20px;
  align-items: start;
}

.document-grid--single {
  grid-template-columns: minmax(0, 1fr);
}

.document-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface-strong);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.22);
}

.document-card__title {
  margin: 0 0 12px;
  font-size: 19px;
  line-height: 1.28;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.document-card__text {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.76;
  word-break: keep-all;
}

.document-card__text a,
.document-list a,
.document-aside__text a {
  color: #ffe0dd;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.document-card__text a:hover,
.document-card__text a:focus-visible,
.document-list a:hover,
.document-list a:focus-visible,
.document-aside__text a:hover,
.document-aside__text a:focus-visible {
  color: #fff3f1;
  outline: none;
}

.document-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.document-list li {
  position: relative;
  padding-left: 18px;
  color: #dce3ea;
  font-size: 14px;
  line-height: 1.65;
}

.document-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--accent-strong), var(--accent));
  box-shadow: 0 0 0 4px rgba(227, 91, 82, 0.12);
  transform: translateY(-50%);
}

.document-side {
  display: grid;
  gap: 20px;
}

.document-aside {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    radial-gradient(circle at 88% 0%, rgba(255, 255, 255, 0.06), transparent 30%),
    rgba(255, 255, 255, 0.03);
}

.document-aside__eyebrow {
  margin: 0 0 10px;
  color: #d9b0ad;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.document-aside__title {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.25;
  letter-spacing: -0.04em;
}

.document-aside__text {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

@media (max-width: 900px) {
  .document-shell {
    width: min(100% - 32px, 760px);
  }

  .document-topbar {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10px;
  }

  .document-topbar__meta {
    justify-content: flex-start;
  }

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

@media (max-width: 640px) {
  .document-shell {
    width: min(100% - 28px, 760px);
  }

  .document-hero {
    padding: 20px;
  }

  .document-card,
  .document-aside {
    padding: 20px;
  }

  .document-title {
    font-size: clamp(32px, 10vw, 48px);
  }

}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
}