:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-soft: #f0f3f8;
  --text: #1f2937;
  --muted: #687386;
  --line: #d9e0ea;
  --accent: #6d5dfc;
  --accent-soft: #eeeefe;
  --code-bg: #111827;
  --code-text: #e5e7eb;
  --shadow: 0 12px 30px rgba(31, 41, 55, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: radial-gradient(circle at top left, #eef1ff 0, transparent 32rem), var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  line-height: 1.75;
}

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(247, 248, 251, 0.82);
  border-bottom: 1px solid rgba(217, 224, 234, 0.75);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--accent);
  color: white;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  box-shadow: var(--shadow);
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.top-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
  padding: 8px 11px;
  border-radius: 999px;
}

.top-nav a:hover,
.top-nav a.active {
  color: var(--accent);
  background: var(--accent-soft);
}

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px;
  padding: 30px 0 56px;
}

.sidebar {
  position: sticky;
  top: 88px;
  align-self: start;
}

.sidebar-card {
  background: rgba(255,255,255,0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 16px;
}

.search-label,
.sidebar-title {
  display: block;
  margin: 0 0 10px;
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--text);
}

.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 12px;
  font-size: 0.95rem;
  outline: none;
  background: white;
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.search-results {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

.search-result {
  display: block;
  padding: 9px 10px;
  border-radius: 10px;
  background: var(--surface-soft);
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
}

.search-result span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 2px;
}

.sidebar-link {
  display: block;
  padding: 9px 10px;
  border-radius: 10px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
}

.sidebar-link:hover { background: var(--surface-soft); color: var(--accent); }

.content {
  min-width: 0;
  background: rgba(255,255,255,0.88);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: clamp(22px, 3vw, 46px);
  overflow-x: auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 800;
  margin: 0 0 8px;
}

.page-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.05em;
  margin: 0 0 22px;
}

.content h1,
.content h2,
.content h3 {
  letter-spacing: -0.035em;
  line-height: 1.28;
}

.content h2 {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 1.65rem;
}

.content h3 { margin-top: 2rem; font-size: 1.25rem; }
.content p { margin: 0.85rem 0; }
.content a { color: var(--accent); font-weight: 700; }
.content strong { font-weight: 850; }

.hero {
  display: grid;
  gap: 20px;
  padding: clamp(20px, 4vw, 34px);
  border-radius: 24px;
  background: linear-gradient(135deg, #f4f1ff, #eef7ff);
  border: 1px solid var(--line);
  margin-bottom: 28px;
}

.hero p { font-size: 1.08rem; color: #3d4656; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 18px 0 26px;
}

.card {
  display: block;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 18px;
  text-decoration: none;
  color: var(--text);
  box-shadow: 0 8px 20px rgba(31, 41, 55, 0.05);
}

.card:hover { transform: translateY(-2px); border-color: #c6c9ff; }
.card h3 { margin: 0 0 8px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.94rem; }

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  font-size: 0.88rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 18px 0;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.content table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

.content th,
.content td {
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
  vertical-align: top;
}

.content th {
  background: var(--surface-soft);
  text-align: left;
}

.content tr:last-child td { border-bottom: 0; }

.content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  padding: 0.14em 0.36em;
  border-radius: 7px;
  background: #edf0f7;
  color: #463ec8;
}

.content pre {
  overflow-x: auto;
  padding: 18px;
  border-radius: 16px;
  background: var(--code-bg);
  color: var(--code-text);
}

.content pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.content blockquote {
  margin: 18px 0;
  padding: 12px 16px;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 14px 14px 0;
  color: #374151;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 24px 0 34px;
  font-size: 0.92rem;
}

@media (max-width: 860px) {
  .header-inner { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .content { padding: 22px; }
  .brand-text { font-size: 0.98rem; }
}