:root {
  --paper: #faf9f5;
  --card: #f5f4ed;
  --line: #e8e6dc;
  --ink: #0d1f2b;
  --body: #404040;
  --mark: #77ad47;
  --code: #f0eee6;
  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  --display: "New York", "Iowan Old Style", Palatino, "Palatino Linotype", "Songti SC", "AppleMyungjo", serif;
}

* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  word-break: keep-all;
  overflow-wrap: break-word;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.skip {
  position: absolute; left: 12px; top: -48px;
  background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 4;
}
.skip:focus { top: 12px; }

.top {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 28px;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; margin-right: auto;
}
.brand img { height: 22px; width: auto; }
.brand span { font-family: var(--display); font-size: 20px; line-height: 1.2; }
.top nav { display: flex; gap: 16px; }
.top nav a { text-decoration: none; min-height: 32px; }
.top nav a[aria-current="page"] { border-bottom: 2px solid var(--mark); }
.search { margin: 0; }
.search input {
  width: 220px; min-height: 40px;
  border: 1px solid var(--line); border-radius: 4px;
  background: var(--paper); color: var(--ink);
  font: inherit; padding: 8px 12px;
}

.layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 28px;
  padding: 36px 28px 72px;
}
.rail { position: sticky; top: 20px; align-self: start; }
.rail h2, .filters-label {
  margin: 0 0 12px;
  font-size: 12px; line-height: 1.4; font-weight: 600;
}
.rail button, .filters button {
  display: block; width: 100%;
  margin: 0 0 4px; padding: 6px 0;
  border: 0; background: transparent;
  color: var(--body); font: inherit; text-align: left;
  min-height: 32px; cursor: pointer;
}
.rail button[aria-pressed="true"] {
  color: var(--ink); font-weight: 600;
  box-shadow: inset 3px 0 0 var(--mark);
  padding-left: 10px;
}
.filters { display: none; }

.mast h1 {
  margin: 0;
  font-family: var(--display);
  font-size: 72px; font-weight: 500; line-height: 0.95;
  letter-spacing: 0;
}
.lede { margin: 12px 0 28px; max-width: 36em; color: var(--body); }

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px 20px;
  align-items: start;
}
.card {
  display: flex; flex-direction: column; gap: 8px;
  text-decoration: none; min-width: 0;
}
.cover {
  display: flex; flex-direction: column; justify-content: space-between;
  min-height: 220px; padding: 16px;
  background: var(--card);
  border-radius: 4px;
}
.cover.has-photo { padding: 0; min-height: 0; background: transparent; }
.cover img {
  display: block; width: 100%; height: auto; max-height: 220px;
  object-fit: contain; background: var(--card); border-radius: 4px;
}
.issue {
  font-variant-numeric: tabular-nums;
  font-size: 12px; color: var(--body);
}
.cover-name {
  font-family: var(--display);
  font-size: 28px; line-height: 1.15; font-weight: 500;
  overflow-wrap: anywhere;
}
.card .meta { font-size: 12px; line-height: 1.4; color: var(--body); }
.card .name { font-weight: 600; }
.card .sum { margin: 0; color: var(--body); }
.card:hover .cover { background: #f0eee6; }
.card:hover .cover.has-photo { background: transparent; }
.card.is-hidden { display: none; }
.empty {
  display: none; margin-top: 20px; padding: 16px;
  border: 1px solid var(--line); border-radius: 4px;
}
.empty.is-shown { display: block; }

.page-guide .layout, .page-install .layout {
  grid-template-columns: minmax(0, 72ch) 180px;
  max-width: 980px;
  margin: 0 auto;
}
.page-guide .rail, .page-install .rail { display: none; }
.toc h2 { margin: 0 0 8px; font-size: 12px; line-height: 1.4; }
.toc a { display: block; margin: 0 0 8px; color: var(--body); text-decoration: none; }
.crumb ol { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; padding: 0; list-style: none; color: var(--body); }
.crumb li:not(:last-child)::after { content: "/"; margin-left: 8px; }
.article h1, .prose h1 {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: 44px; font-weight: 500; line-height: 1.15;
}
.prose h2 { margin: 32px 0 8px; font-size: 22px; line-height: 1.3; font-family: var(--display); font-weight: 500; }
.prose h3 { margin: 20px 0 8px; font-size: 16px; }
.prose p { margin: 0 0 12px; }
.prose ul, .prose ol { margin: 0 0 12px; padding-left: 1.2em; }
.prose blockquote { margin: 0 0 16px; padding-left: 12px; border-left: 2px solid var(--mark); color: var(--body); }
.prose img { max-width: 100%; height: auto; display: block; margin: 12px 0 16px; border-radius: 4px; }
.prose a { text-decoration-thickness: 1px; text-underline-offset: 3px; }
.prose code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.92em; background: var(--code); padding: 0 4px; border-radius: 4px; }
.prose pre { margin: 0 0 16px; padding: 12px; overflow: auto; background: var(--code); border-radius: 4px; line-height: 1.5; }
.prose pre code { background: transparent; padding: 0; }
.table-wrap { overflow-x: auto; margin: 0 0 16px; }
.prose table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.prose th, .prose td { padding: 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { font-weight: 600; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

@media (max-width: 960px) {
  .top { flex-wrap: wrap; padding: 16px; }
  .search { width: 100%; }
  .search input { width: 100%; }
  .layout { grid-template-columns: 1fr; padding: 20px 16px 48px; }
  .rail { display: none; }
  .filters { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 0 0 20px; }
  .brand { margin-right: 0; }
  .top nav { margin-left: auto; }
  .filters button { width: auto; white-space: nowrap; padding: 6px 0; border-bottom: 2px solid transparent; }
  .filters button[aria-pressed="true"] { color: var(--ink); font-weight: 600; border-bottom-color: var(--mark); }
  .mast h1 { font-size: 48px; }
  .grid { grid-template-columns: 1fr; }
  .page-guide .layout, .page-install .layout { grid-template-columns: 1fr; }
  .toc { display: none; }
  .article h1, .prose h1 { font-size: 32px; }
}