/* ══════════════════════════════════════════════════
   EDITORIAL — 블랙 + 레드
   좌측 고정 사이드바 + 번호가 매겨진 인덱스형 목록
   ══════════════════════════════════════════════════ */
:root {
  --bg:        #08080a;
  --bg-1:      #101013;
  --bg-2:      #17171c;

  --line:      rgba(255, 255, 255, .08);
  --line-2:    rgba(255, 255, 255, .17);

  --fg:        #f6f6f8;
  --fg-2:      #a2a2ac;
  --fg-3:      #66666f;

  --accent:      #e00030;
  --accent-2:    #ff5a78;
  --accent-deep: #a80024;
  --accent-soft: rgba(224, 0, 48, .10);
  --accent-line: rgba(224, 0, 48, .38);
  --ok:          #2fc97e;

  --radius:    4px;
  --radius-sm: 3px;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
          "Apple SD Gothic Neo", "Segoe UI", Roboto, sans-serif;

  --w: 1180px;
  --rail: 180px;
  --gap: 56px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: -0.012em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: var(--fg); text-decoration: none; }

::selection { background: var(--accent); color: #fff; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

code, pre { font-family: var(--mono); }

/* 작은 라벨류는 모노 대문자 */
.eyebrow, .block h2, .c-label, .pn-label, .year-label, .crumb, .tag, .idx {
  font-family: var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.bg-grid { display: none; }
.bg-glow {
  position: fixed;
  top: 0; left: 0;
  width: 46vw; height: 60vh;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(ellipse at 0% 0%, rgba(224, 0, 48, .10) 0%, transparent 62%);
}

/* ══════════════════════════════════════════════════
   헤더 — 위에 얇은 레드 라인
   ══════════════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  transition: background-color .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(8, 8, 10, .84);
  backdrop-filter: saturate(150%) blur(16px);
  -webkit-backdrop-filter: saturate(150%) blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--w);
  margin: 0 auto;
  padding: 18px 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.brand-dot {
  width: 2px;
  height: 15px;
  border-radius: 1px;
  background: var(--accent);
}
.brand .cursor { display: none; }

.site-header nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.site-header nav a {
  position: relative;
  padding: 2px 0;
  color: var(--fg-3);
  transition: color .2s var(--ease);
}
.site-header nav a:hover { color: var(--fg); }
.site-header nav a.active { color: var(--fg); }
.site-header nav a.active::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 5px; height: 5px;
  background: var(--accent);
}
.site-header nav a.ext span { margin-left: 3px; font-size: 9px; opacity: .5; }

/* ══════════════════════════════════════════════════
   레이아웃 — 사이드바가 있는 페이지는 2단
   ══════════════════════════════════════════════════ */
.wrap { max-width: var(--w); margin: 0 auto; padding: 0 32px; }

.wrap:has(.cat-menu) {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  column-gap: var(--gap);
  align-items: start;
}
.wrap:has(.cat-menu) > .page-head { grid-column: 1 / -1; }
.wrap:has(.cat-menu) > .cat-menu {
  grid-column: 1;
  position: sticky;
  top: 88px;
}
.wrap:has(.cat-menu) > .year-block,
.wrap:has(.cat-menu) > .no-result { grid-column: 2; }

/* 글 페이지도 같은 2단 — 왼쪽은 목차 */
.wrap:has(.post-toc) {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  column-gap: var(--gap);
  align-items: start;
}
.wrap:has(.post-toc) > .post-toc {
  grid-column: 1;
  position: sticky;
  top: 88px;
  padding-top: 92px;
}
.wrap:has(.post-toc) > .post { grid-column: 2; max-width: 720px; margin: 0; }

.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .65s var(--ease), transform .65s var(--ease);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

.home [data-reveal]:nth-child(1) { transition-delay: .00s; }
.home [data-reveal]:nth-child(2) { transition-delay: .07s; }
.home [data-reveal]:nth-child(3) { transition-delay: .14s; }
.home [data-reveal]:nth-child(4) { transition-delay: .21s; }

/* ══════════════════════════════════════════════════
   히어로 — 왼쪽에 세로 라벨, 오른쪽에 큰 타이포
   ══════════════════════════════════════════════════ */


/* 오른쪽에 한 줄씩 쌓이는 링크 */
.hero-links {
  flex: none;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  min-width: 132px;
  padding-top: 10px;
}
.hero-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--fg-2);
  transition: color .2s var(--ease), padding-left .2s var(--ease);
}
.hero-links a:first-child { border-top: 1px solid var(--line); }
.hero-links a:hover { color: var(--accent); padding-left: 6px; }

.hl-arrow { font-size: 10px; opacity: .75; transition: opacity .2s var(--ease); }
.hero-links a:hover .hl-arrow { opacity: 1; }
/* 좌측 레일에 붙는 세로 라벨 */

.prompt { display: none; }

/* 글씨체는 첫 번째 테마와 동일 (JetBrains Mono + 위→아래 그라데이션) */
.name {
  margin: 0 0 28px;
  font-family: var(--mono);
  font-size: clamp(44px, 9.5vw, 84px);
  font-weight: 700;
  line-height: .95;
  /* 모노는 글자폭이 모두 같아 성글어 보인다 → 자간을 더 조여 폭을 줄임 */
  letter-spacing: -0.09em;
  background: linear-gradient(170deg, #ffffff 12%, #b9bec6 58%, #6d737c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}


.tagline {
  max-width: 26ch;
  margin: 0 0 44px;
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 450;
  line-height: 1.6;
  letter-spacing: -0.02em;
  color: var(--fg-2);
}

/* 이 테마에선 안 쓰지만 되살릴 때 대비 */
.interests {
  display: flex; flex-wrap: wrap; gap: 8px;
  list-style: none; margin: 0 0 40px; padding: 0;
}
.interests li {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--fg-2);
}
.i-num { font-size: 10px; font-weight: 700; color: var(--accent); }

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: transparent;
  font-size: 14px;
  font-weight: 550;
  letter-spacing: -0.015em;
  transition: border-color .2s var(--ease), background-color .2s var(--ease),
              color .2s var(--ease);
}
.btn:hover { border-color: var(--fg); background: var(--bg-1); transform: none; }

.btn.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
  font-weight: 650;
}
.btn.primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); }

.btn-arrow { transition: transform .2s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(4px); }

/* ══════════════════════════════════════════════════
   섹션 헤더
   ══════════════════════════════════════════════════ */
.block {
  padding: 36px 0 24px;
  border-top: 1px solid var(--line);
  position: relative;
}

.block-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}

.block h2 {
  margin: 0;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--fg-3);
}
.block h2::before {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  margin-bottom: 10px;
  background: var(--accent);
}

.block-more {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--fg-3);
  transition: color .2s var(--ease);
  margin-left: auto;
}
.block-more:hover { color: var(--accent); }

.page-head {
  padding: 96px 0 44px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 44px;
}

.eyebrow {
  margin: 0 0 18px;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--accent);
}
.eyebrow::before {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  margin: 0 0 10px;
  background: var(--accent);
}

.page-head h1 {
  margin: 0 0 12px;
  font-size: clamp(44px, 8vw, 76px);
  font-weight: 800;
  letter-spacing: -0.055em;
  line-height: .96;
}

.lead { margin: 0; color: var(--fg-3); font-size: 14.5px; }

/* ══════════════════════════════════════════════════
   사이드바 카테고리
   ══════════════════════════════════════════════════ */
.cat-menu {
  margin: 0 0 40px;
  padding: 0;
  border: 0;
  background: none;
}

.cat-item,
.cat-group > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 0;
  border: 0;
  background: none;
  color: var(--fg-3);
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 450;
  letter-spacing: -0.015em;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: color .18s var(--ease);
}
.cat-item:hover,
.cat-group > summary:hover { color: var(--fg); background: none; }

.cat-item .ci-name { flex: 1; }
.cat-menu > .cat-group > summary .ci-name {
  flex: 1;
  font-size: 13.5px;
  font-weight: 550;
  letter-spacing: -0.015em;
  color: var(--fg-2);
}

.cat-item em,
.cat-group > summary em {
  font-style: normal;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--fg-3);
  opacity: .7;
  font-variant-numeric: tabular-nums;
}

.cat-item.is-on {
  color: var(--fg);
  font-weight: 600;
  background: none;
  box-shadow: none;
}
.cat-item.is-on .ci-name {
  position: relative;
  display: inline-block;
}
/* 선택 표시 — 글자 아래 레드 밑줄 */
.cat-item.is-on .ci-name::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 2px;
  background: var(--accent);
}
.cat-item.is-on em { color: var(--accent); opacity: 1; }
.cat-group.has-on > summary .ci-name { color: var(--accent); }

.cat-group { margin-top: 22px; }
.cat-group > summary { list-style: none; padding-bottom: 4px; }
.cat-group > summary::-webkit-details-marker { display: none; }

.ci-caret {
  order: 2;
  flex: none;
  width: 10px; height: 10px;
  font-size: 0;
  position: relative;
  transition: transform .25s var(--ease);
}
.ci-caret::before {
  content: "";
  position: absolute;
  top: 1px; left: 2px;
  width: 5px; height: 5px;
  border-right: 1.5px solid var(--fg-3);
  border-bottom: 1.5px solid var(--fg-3);
  transform: rotate(45deg);
}
.cat-group[open] > summary .ci-caret { transform: rotate(180deg); }
.cat-group.has-on > summary .ci-caret::before { border-color: var(--accent); }

.cat-children {
  padding: 2px 0 0 0;
  margin: 0;
  border-left: 0;
}
.cat-children .cat-item { font-size: 13px; font-weight: 500; padding: 6px 0 6px 12px; }

.cat-all {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0;
}
.cat-all .ci-name,
.cat-top .ci-name { font-size: 13.5px; font-weight: 550; color: var(--fg-2); }
.cat-all.is-on .ci-name,
.cat-top.is-on .ci-name { color: var(--fg); }
.cat-top { margin-top: 22px; padding-top: 4px; }

.no-result {
  padding: 60px 0;
  border: 0;
  border-top: 1px solid var(--line);
  color: var(--fg-3);
  font-size: 14.5px;
  text-align: left;
}

.crumb {
  font-size: 10px;
  font-weight: 500;
  color: var(--fg-3);
  white-space: nowrap;
}
a.crumb { transition: color .2s var(--ease); }
a.crumb:hover { color: var(--accent); }

[hidden] { display: none !important; }

/* ── 연도 ────────────────────────────────────────── */
.year-block { margin-bottom: 52px; }

.year-label {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 6px;
  font-size: 10.5px;
  font-weight: 500;
  color: var(--fg-3);
}
.year-label i { flex: 1; height: 1px; background: var(--line); }
.year-label em {
  font-style: normal;
  font-size: 10px;
  font-weight: 500;
  color: var(--fg-3);
  letter-spacing: .1em;
}

/* ══════════════════════════════════════════════════
   글 목록 — 번호가 매겨진 인덱스
   ══════════════════════════════════════════════════ */
.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li + li { border-top: 1px solid var(--line); }

.post-list a {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 16px 14px 16px 18px;
  border-radius: var(--radius);
  transition: background-color .22s var(--ease), padding-left .22s var(--ease);
}

/* 호버 시 왼쪽에 들어오는 레드 바 */
.post-list a::after {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity .22s var(--ease);
}
.post-list a:hover { background: var(--bg-1); padding-left: 24px; }
.post-list a:hover::after { opacity: 1; }

.post-list .idx {
  flex: none;
  width: 26px;
  padding-top: 6px;
  font-size: 10.5px;
  color: var(--fg-3);
  transition: color .22s var(--ease);
}
.post-list a:hover .idx { color: var(--fg-2); }

.post-main { flex: 1; min-width: 0; display: block; }

.post-list .t {
  display: block;
  font-size: 21px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.035em;
  transition: color .2s var(--ease);
}
.post-list a:hover .t { color: var(--accent); }

.post-list time {
  display: block;
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-3);
  font-variant-numeric: tabular-nums;
}

.post-list .s {
  display: block;
  margin-top: 6px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--fg-2);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.post-list .meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 9px;
}
.post-list .meta-row time { margin-top: 0; }

.post-list .arrow {
  flex: none;
  align-self: flex-start;
  padding-top: 4px;
  font-size: 15px;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity .22s var(--ease), transform .22s var(--ease);
}
.post-list a:hover .arrow { opacity: 1; transform: none; }

.post-list.big a { padding-top: 18px; padding-bottom: 18px; }

.post-list .empty {
  padding: 48px 0;
  border: 0;
  border-top: 1px solid var(--line);
  color: var(--fg-3);
  font-size: 14.5px;
  text-align: left;
}

.tags { display: inline-flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  font-size: 10px;
  font-weight: 500;
  color: var(--fg-3);
  white-space: nowrap;
}
a.tag { transition: border-color .2s var(--ease), color .2s var(--ease); }
a.tag:hover { border-color: var(--accent); color: var(--accent); }

/* ══════════════════════════════════════════════════
   글 본문
   ══════════════════════════════════════════════════ */
.read-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 60;
  pointer-events: none;
}
.read-progress i {
  display: block;
  height: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.back-top {
  margin: 44px 0 0;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.back-top a { color: var(--fg-3); transition: color .2s var(--ease); }
.back-top a:hover { color: var(--accent); }

.post {
  max-width: 680px;
  margin: 0 auto;
}

.post-head { padding: 30px 0 36px; border-bottom: 1px solid var(--line); }
.post-head h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 46px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.05em;
}

.post-summary {
  margin: 22px 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--accent);
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: -0.02em;
  color: var(--fg-2);
}

.post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.post-meta .dot { opacity: .4; }

.post-body { padding: 52px 0 64px; font-size: 17px; line-height: 1.82; }
.post-body > *:first-child { margin-top: 0; }

.post-body h2 {
  position: relative;
  margin: 62px 0 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.35;
  scroll-margin-top: 90px;
}
.post-body h2::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: 36px; height: 2px;
  background: var(--accent);
}
.post-body h3 {
  margin: 42px 0 12px;
  font-size: 18.5px;
  font-weight: 650;
  letter-spacing: -0.03em;
  scroll-margin-top: 90px;
}

.post-body p { margin: 0 0 24px; }

.post-body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent-line);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  transition: text-decoration-color .2s var(--ease);
}
.post-body a:hover { text-decoration-color: var(--accent); }

.post-body strong { font-weight: 700; color: #fff; }

.post-body ul, .post-body ol { margin: 0 0 24px; padding-left: 22px; }
.post-body li { margin-bottom: 9px; padding-left: 4px; }
.post-body li::marker { color: var(--accent); }

.post-body img { max-width: 100%; height: auto; border-radius: var(--radius); }

.post-body hr { margin: 56px 0; border: 0; height: 1px; background: var(--line); }

.post-body blockquote {
  margin: 0 0 24px;
  padding: 6px 0 6px 22px;
  border-left: 2px solid var(--line-2);
  border-radius: 0;
  background: none;
  font-size: 16.5px;
  color: var(--fg-2);
}
.post-body blockquote p:last-child { margin-bottom: 0; }

.post-body code {
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-1);
  font-size: .85em;
  color: var(--accent-2);
}

.code-shell { position: relative; margin: 0 0 28px; }

.post-body pre {
  margin: 0;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  border-radius: 0;
  background: var(--bg-1);
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.7;
  tab-size: 2;
}
.post-body pre code { padding: 0; border: 0; background: none; font-size: inherit; color: inherit; }

.post-body .highlighter-rouge { margin: 0 0 28px; }
.post-body .highlighter-rouge .highlight { margin: 0; background: none; }

.copy-btn {
  position: absolute;
  top: 10px; right: 10px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--bg-2);
  color: var(--fg-3);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0;
  transition: opacity .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.code-shell:hover .copy-btn, .copy-btn:focus-visible { opacity: 1; }
.copy-btn:hover { color: var(--fg); border-color: var(--line-2); }
.copy-btn.done { color: var(--ok); border-color: var(--ok); opacity: 1; }

.post-body table {
  width: 100%;
  margin: 0 0 28px;
  border-collapse: collapse;
  font-size: 14.5px;
  border-top: 2px solid var(--accent);
}
.post-body th, .post-body td {
  padding: 11px 14px 11px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.post-body th {
  background: none;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.post-body tr:last-child td { border-bottom: 0; }

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.pn {
  display: block;
  padding: 26px 20px 26px 0;
  border: 0;
  border-radius: 0;
  background: none;
  transition: none;
}
.pn:hover { background: none; transform: none; }
.pn.next { text-align: right; border-left: 1px solid var(--line); padding-left: 20px; padding-right: 0; }

.pn-label {
  display: block;
  font-size: 10px;
  font-weight: 500;
  color: var(--fg-3);
  margin-bottom: 8px;
}
.pn-title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.035em;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.pn:hover .pn-title { color: var(--accent); }

/* ══════════════════════════════════════════════════
   푸터
   ══════════════════════════════════════════════════ */
.site-footer {
  max-width: var(--w);
  margin: 56px auto 0;
  padding: 36px 32px 56px;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand { display: flex; flex-direction: column; gap: 2px; }
.f-name { font-size: 15px; font-weight: 700; letter-spacing: -0.03em; }
.f-tag { font-size: 13.5px; color: var(--fg-3); }

.footer-links {
  display: flex;
  gap: 22px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.footer-links a { color: var(--fg-3); transition: color .2s var(--ease); }
.footer-links a:hover { color: var(--accent); }

.counter {
  display: inline-flex;
  align-items: stretch;
  margin-top: 0;
  border: 0;
  border-left: 2px solid var(--accent);
  border-radius: 0;
  background: none;
  overflow: visible;
}
.c-cell { display: flex; align-items: baseline; gap: 10px; padding: 4px 20px; }
.c-sep { width: 1px; background: var(--line); }
.c-label { font-size: 9.5px; font-weight: 500; color: var(--fg-3); }
.c-num {
  font-family: var(--mono);
  font-size: 15px; font-weight: 700;
  color: var(--fg); font-variant-numeric: tabular-nums;
}

.footer-meta {
  margin: 30px 0 0;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--fg-3);
  opacity: .75;
}

/* ══════════════════════════════════════════════════
   Rouge 문법 하이라이팅
   ══════════════════════════════════════════════════ */
.highlight .c, .highlight .cm, .highlight .c1, .highlight .cs { color: #585862; font-style: italic; }
.highlight .cp  { color: #8a8a95; }
.highlight .cd  { color: #585862; font-style: italic; }

.highlight .k, .highlight .kc, .highlight .kd, .highlight .kn,
.highlight .kp, .highlight .kr { color: #ff7b87; }
.highlight .kt  { color: #ffc46b; }

.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sc,
.highlight .sd, .highlight .sh, .highlight .sx, .highlight .sr,
.highlight .ss, .highlight .si, .highlight .se { color: #86df85; }

.highlight .m, .highlight .mf, .highlight .mh, .highlight .mi,
.highlight .mo, .highlight .il { color: #ffab70; }

.highlight .n   { color: var(--fg); }
.highlight .na  { color: #ffc46b; }
.highlight .nb, .highlight .bp { color: #79c0ff; }
.highlight .nc, .highlight .nn { color: #ffd88a; }
.highlight .no  { color: var(--accent-2); }
.highlight .nd  { color: #c9a2ff; }
.highlight .ne, .highlight .nf, .highlight .nl { color: #79c0ff; }
.highlight .ni  { color: var(--fg-2); }
.highlight .nt  { color: #ff7b87; }
.highlight .nv, .highlight .vc, .highlight .vg, .highlight .vi { color: var(--accent-2); }

.highlight .o, .highlight .ow { color: #c9a2ff; }
.highlight .p   { color: var(--fg-2); }

.highlight .gd  { color: #ff9c9c; background: rgba(224, 0, 48, .10); }
.highlight .gi  { color: #86df85; background: rgba(47, 201, 126, .10); }
.highlight .ge  { font-style: italic; }
.highlight .gs  { font-weight: 700; }
.highlight .gh, .highlight .gu { color: #79c0ff; font-weight: 700; }
.highlight .gp  { color: var(--fg-3); }

.highlight .err { color: var(--accent); background: var(--accent-soft); }
.highlight .w   { color: transparent; }

/* ══════════════════════════════════════════════════
   반응형 — 좁아지면 사이드바를 위로 올린다
   ══════════════════════════════════════════════════ */
@media (max-width: 860px) {
  .wrap:has(.cat-menu) {
    display: block;
  }
  .wrap:has(.cat-menu) > .cat-menu {
    position: static;
    padding-bottom: 28px;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--line);
  }
  /* 좁을 땐 사이드바를 가로 목록으로 */
  .cat-group { margin-top: 16px; }

  .hero { padding-left: 0; }
  .hero::before, .hero::after { display: none; }
  .block { padding-left: 0; }
  .block h2 { position: static; margin-bottom: 14px; }
  .block h2::before { display: none; }
}

@media (max-width: 680px) {
  .header-inner { padding: 16px 20px; }
  .site-header nav { gap: 20px; font-size: 10.5px; }
  .site-header nav a.active::before { display: none; }
  .site-header nav a.ext span { display: none; }

  .wrap { padding: 0 20px; }

  .hero { padding: 72px 0 60px; }
  .tagline { margin-bottom: 36px; }

  .btn { flex: 1; justify-content: center; padding: 13px 16px; }

  .page-head { padding: 60px 0 32px; margin-bottom: 32px; }

  .post-list .t { font-size: 18px; }
  .post-list a { gap: 14px; }
  .post-list.big a::before { width: 20px; }

  .post-body { padding: 40px 0 48px; font-size: 16.5px; }
  .post-body h2 { font-size: 22px; }
  .post-body pre { padding: 18px; font-size: 13px; }
  .copy-btn { opacity: 1; }

  .post-nav { grid-template-columns: 1fr; }
  .pn.next { text-align: left; border-left: 0; border-top: 1px solid var(--line); padding-left: 0; }

  .site-footer { margin-top: 80px; padding: 30px 20px 44px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
}

@media (max-width: 860px) {
  .hero { flex-direction: column; gap: 30px; }
  .hero-links { width: 100%; padding-top: 0; }
}

/* ══════════════════════════════════════════════════
   목차 / 제목 앵커 / 코드 언어 라벨
   ══════════════════════════════════════════════════ */
.post-toc { margin: 0 0 32px; }

/* 넓은 화면에서는 버튼이지만 그냥 라벨처럼 보인다 (접는 건 좁은 화면 전용) */
.toc-label {
  display: block;
  width: 100%;
  margin: 0 0 12px;
  padding: 0 0 10px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: none;
  text-align: left;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--fg-3);
  cursor: default;
}
.toc-count,
.toc-caret { display: none; }

.toc-list { list-style: none; margin: 0; padding: 0; }
.toc-list li { margin: 0; }
.toc-list li.lv3 { padding-left: 12px; }

.toc-list a {
  display: block;
  padding: 6px 0 6px 10px;
  border-left: 2px solid transparent;
  font-size: 12.5px;
  line-height: 1.45;
  letter-spacing: -0.015em;
  color: var(--fg-3);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.toc-list li.lv3 a { font-size: 12px; }
.toc-list a:hover { color: var(--fg); }
.toc-list a.is-here { color: var(--accent); border-left-color: var(--accent); }

/* 제목 옆 앵커 */
.h-anchor {
  margin-left: 10px;
  font-family: var(--mono);
  font-weight: 400;
  font-size: .62em;
  color: var(--accent);
  opacity: 0;
  text-decoration: none;
  transition: opacity .18s var(--ease);
}
.post-body h2:hover .h-anchor,
.post-body h3:hover .h-anchor,
.h-anchor:focus-visible { opacity: 1; }

/* 코드 블록 언어 라벨 — 호버하면 copy 버튼으로 바뀐다 */
.code-shell[data-lang]::before {
  content: attr(data-lang);
  position: absolute;
  top: 10px;
  right: 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--fg-3);
  opacity: .65;
  pointer-events: none;
  transition: opacity .2s var(--ease);
}
.code-shell[data-lang]:hover::before { opacity: 0; }
.code-shell[data-lang] pre { padding-top: 30px; }

/* ── 좁은 화면: 목차는 제목 아래 접히는 카드 ─────────────── */
@media (max-width: 860px) {
  .wrap:has(.post-toc) { display: block; }
  .h-anchor { display: none; }

  .post-toc {
    position: static;
    padding-top: 0;
    margin: 22px 0 30px;
    border: 1px solid var(--line);
    border-radius: 10px;
    overflow: hidden;
  }

  .toc-label {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0;
    padding: 13px 15px;
    border-bottom: 1px solid transparent;
    cursor: pointer;
    transition: color .18s var(--ease), border-color .25s var(--ease);
  }
  .toc-label:hover { color: var(--fg-2); }
  .post-toc.is-open .toc-label {
    color: var(--fg-2);
    border-bottom-color: var(--line);
  }

  .toc-label-text { flex: 1; }

  .toc-count {
    display: block;
    font-size: 10px;
    letter-spacing: .1em;
    color: var(--fg-3);
    opacity: .7;
  }

  .toc-caret {
    display: block;
    width: 12px;
    height: 12px;
    flex: none;
    transition: transform .28s var(--ease);
  }
  .post-toc.is-open .toc-caret { transform: rotate(180deg); }

  /* 접힘 → 펼침. 항목이 많은 글은 목차 안에서만 스크롤되게 높이를 제한한다 */
  .toc-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s var(--ease);
  }
  .post-toc.is-open .toc-list {
    max-height: 52vh;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 8px 15px 12px;
  }
  .toc-list a { padding-top: 8px; padding-bottom: 8px; }
}

/* ── 3단 카테고리 (Study > Wargame > Dreamhack) ──── */
/* 2단째 그룹 헤더는 대문자 모노가 아니라 일반 항목처럼 보이게 */
.cat-sub { margin-top: 0; }

.cat-sub > summary {
  padding: 6px 0 6px 12px;
}
.cat-sub > summary .ci-name {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.015em;
  text-transform: none;
  color: var(--fg-2);
}
.cat-sub > summary:hover .ci-name { color: var(--fg); }
.cat-sub.has-on > summary .ci-name { color: var(--accent); }

/* 3단째 항목은 한 단계 더 들여쓰고, 왼쪽에 가는 선으로 묶는다 */
.cat-sub > .cat-children {
  margin-left: 12px;
  padding-left: 10px;
  border-left: 1px solid var(--line);
}
.cat-sub > .cat-children .cat-item {
  padding: 5px 0 5px 8px;
  font-size: 12.5px;
  font-weight: 450;
}

/* ══════════════════════════════════════════════════
   밝은 테마 (data-theme="light")
   기본은 검정이고, 헤더 버튼으로 전환합니다.
   ══════════════════════════════════════════════════ */
:root[data-theme="light"] {
  --bg:        #ffffff;
  --bg-1:      #f6f6f8;
  --bg-2:      #eeeef1;

  --line:      rgba(0, 0, 0, .11);
  --line-2:    rgba(0, 0, 0, .24);

  --fg:        #111116;
  --fg-2:      #4b4b56;
  --fg-3:      #85858f;

  /* 흰 배경에서는 같은 빨강이 튀어 보여서 살짝 눌러 쓴다 */
  --accent:      #c8002b;
  --accent-2:    #9e0022;
  --accent-deep: #94001f;
  --accent-soft: rgba(200, 0, 43, .07);
  --accent-line: rgba(200, 0, 43, .34);
  --ok:          #0f7b3d;
}

/* 이름 그라데이션은 방향을 뒤집어야 보인다 */
:root[data-theme="light"] .name {
  background: linear-gradient(170deg, #111116 10%, #3c3c46 55%, #83838e 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

:root[data-theme="light"] .bg-glow {
  background: radial-gradient(ellipse at 0% 0%, rgba(200, 0, 43, .07) 0%, transparent 62%);
}

:root[data-theme="light"] .site-header.scrolled {
  background: rgba(255, 255, 255, .86);
}

:root[data-theme="light"] .post-body strong { color: #000; }

/* ── 밝은 배경용 문법 하이라이팅 ─────────────────── */
:root[data-theme="light"] .highlight .c,
:root[data-theme="light"] .highlight .cm,
:root[data-theme="light"] .highlight .c1,
:root[data-theme="light"] .highlight .cs,
:root[data-theme="light"] .highlight .cd { color: #7d7d87; font-style: italic; }
:root[data-theme="light"] .highlight .cp { color: #6a6a74; }

:root[data-theme="light"] .highlight .k,
:root[data-theme="light"] .highlight .kc,
:root[data-theme="light"] .highlight .kd,
:root[data-theme="light"] .highlight .kn,
:root[data-theme="light"] .highlight .kp,
:root[data-theme="light"] .highlight .kr,
:root[data-theme="light"] .highlight .nt { color: #a30055; }
:root[data-theme="light"] .highlight .kt { color: #8a5300; }

:root[data-theme="light"] .highlight .s,
:root[data-theme="light"] .highlight .s1,
:root[data-theme="light"] .highlight .s2,
:root[data-theme="light"] .highlight .sb,
:root[data-theme="light"] .highlight .sc,
:root[data-theme="light"] .highlight .sd,
:root[data-theme="light"] .highlight .sh,
:root[data-theme="light"] .highlight .sx,
:root[data-theme="light"] .highlight .sr,
:root[data-theme="light"] .highlight .ss,
:root[data-theme="light"] .highlight .si,
:root[data-theme="light"] .highlight .se { color: #0a6b34; }

:root[data-theme="light"] .highlight .m,
:root[data-theme="light"] .highlight .mf,
:root[data-theme="light"] .highlight .mh,
:root[data-theme="light"] .highlight .mi,
:root[data-theme="light"] .highlight .mo,
:root[data-theme="light"] .highlight .il { color: #8a4200; }

:root[data-theme="light"] .highlight .n  { color: var(--fg); }
:root[data-theme="light"] .highlight .na { color: #8a5300; }
:root[data-theme="light"] .highlight .nb,
:root[data-theme="light"] .highlight .bp,
:root[data-theme="light"] .highlight .ne,
:root[data-theme="light"] .highlight .nf,
:root[data-theme="light"] .highlight .nl { color: #0b4ea8; }
:root[data-theme="light"] .highlight .nc,
:root[data-theme="light"] .highlight .nn { color: #7a4a00; }
:root[data-theme="light"] .highlight .no,
:root[data-theme="light"] .highlight .nv,
:root[data-theme="light"] .highlight .vc,
:root[data-theme="light"] .highlight .vg,
:root[data-theme="light"] .highlight .vi { color: #9e0022; }
:root[data-theme="light"] .highlight .nd,
:root[data-theme="light"] .highlight .o,
:root[data-theme="light"] .highlight .ow { color: #6b28c7; }
:root[data-theme="light"] .highlight .p,
:root[data-theme="light"] .highlight .ni { color: var(--fg-2); }

:root[data-theme="light"] .highlight .gd { color: #94001f; background: rgba(200, 0, 43, .08); }
:root[data-theme="light"] .highlight .gi { color: #0f7b3d; background: rgba(15, 123, 61, .08); }
:root[data-theme="light"] .highlight .gh,
:root[data-theme="light"] .highlight .gu { color: #0b4ea8; font-weight: 700; }

/* ── 테마 전환 버튼 ──────────────────────────────── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-left: 4px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: none;
  color: var(--fg-3);
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.theme-toggle svg { width: 15px; height: 15px; }
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }

/* ══════════════════════════════════════════════════
   모바일 보정
   ══════════════════════════════════════════════════ */
@media (max-width: 680px) {
  /* 손가락으로 누를 수 있게 터치 영역 확보 (기존 30px 안팎 → 44px 안팎) */
  .cat-item,
  .cat-group > summary { padding-top: 11px; padding-bottom: 11px; }
  .cat-sub > .cat-children .cat-item { padding-top: 10px; padding-bottom: 10px; }
  .hero-links a { padding: 14px 0; }
  .theme-toggle { width: 36px; height: 36px; }
  .theme-toggle svg { width: 17px; height: 17px; }

  /* 넓은 표가 화면을 밀어내지 않게 표 안에서만 가로 스크롤 */
  .post-body table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  /* 모바일엔 호버가 없어 copy 버튼이 항상 떠 있다.
     언어 라벨과 겹치므로 라벨을 왼쪽으로 보낸다. */
  .code-shell[data-lang]::before { left: 14px; right: auto; opacity: .6; }
  .code-shell[data-lang]:hover::before { opacity: .6; }

  /* 목차는 접어두지 않고 본문 위에 간결하게 */
  .post-toc { margin-bottom: 24px; }
  .toc-list a { padding: 8px 0 8px 10px; }
}

/* ── 댓글 (giscus) ───────────────────────────────── */
.comments {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.comments-label {
  margin: 0 0 20px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.comments-label::before {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  margin-bottom: 10px;
  background: var(--accent);
}

/* ── 소속 링크 (Research Team: Quble) ────────────── */
/* 밑줄을 배경 그라데이션으로 그려서 호버 때 왼→오 로 늘어나게 */
.tagline a {
  color: inherit;
  text-decoration: none;
  padding-bottom: 3px;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1.5px;
  transition: background-size .32s var(--ease), color .22s var(--ease);
}
.tagline a:hover,
.tagline a:focus-visible {
  color: var(--fg);
  background-size: 100% 1.5px;
}

/* 모션 최소화 설정이면 즉시 밑줄만 */
@media (prefers-reduced-motion: reduce) {
  .tagline a:hover { background-size: 100% 1.5px; }
}

/* ══════════════════════════════════════════════════
   홈 — 왼쪽 이름 / 오른쪽 ABOUT · RECENT POSTS
   ══════════════════════════════════════════════════ */
.home {
  display: grid;
  /* 가운데 1px 은 두 단을 가르는 실선 자리 */
  grid-template-columns: minmax(0, 0.86fr) 1px minmax(0, 1fr);
  column-gap: 56px;
  align-items: center;
  padding: 96px 0 44px;
}

/* 세로 실선 — 위아래 끝은 살짝 흐려지게 */
.home::before {
  content: "";
  grid-column: 2;
  grid-row: 1;
  align-self: stretch;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--line) 10%,
    var(--line) 90%,
    transparent 100%
  );
}

/* 오른쪽이 길어져도 이름은 자리를 지킨다 */
.home-name {
  grid-column: 1;
  grid-row: 1;
  align-self: center;
}

.home .name {
  margin: 0;
  font-size: clamp(54px, 8.4vw, 124px);
  line-height: .92;
}

.home-body {
  grid-column: 3;
  grid-row: 1;
  min-width: 0;
  min-height: 520px;
}

/* 첫 블록은 위 경계선 없이 시작 */
.home-body > .block:first-child {
  border-top: 0;
  padding-top: 0;
}

.home-body .tagline {
  max-width: none;
  margin: 0;
}

/* 소속·직함이 여러 줄일 때 줄 간격 */
.home-body .roles { margin: 0 0 30px; }
.home-body .roles .tagline + .tagline { margin-top: 10px; }

.home-body .hero-links { margin-bottom: 4px; }

/* ── 창이 좁아지면 세로로 (모바일 포함) ─────────── */
@media (max-width: 900px) {
  .home {
    display: block;
    padding: 72px 0 40px;
  }
  .home::before { display: none; }
  .home-name { margin-bottom: 40px; }
  .home-body { min-height: 0; }
  .home .name { font-size: clamp(46px, 12vw, 84px); }
  .home-body > .block:first-child {
    border-top: 1px solid var(--line);
    padding-top: 36px;
  }
}

/* ── 홈 프로필 링크 — 테두리 없는 텍스트 링크 ───── */
/* 박스 대신 글자만. 호버하면 Quble 링크와 같은 밑줄이 그어진다. */
.home-body .hero-links {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 26px;
  min-width: 0;
  margin-bottom: 6px;
}

.home-body .hero-links a {
  justify-content: flex-start;
  gap: 7px;
  padding: 4px 0 5px;
  border: 0;
  border-radius: 0;
  color: var(--fg-2);
  background-image: linear-gradient(var(--accent), var(--accent));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1.5px;
  transition: background-size .32s var(--ease), color .22s var(--ease);
}

.home-body .hero-links a:hover,
.home-body .hero-links a:focus-visible {
  padding-left: 0;                 /* 좌우로 밀리지 않게 */
  color: var(--fg);
  background-size: 100% 1.5px;
}
.home-body .hero-links a:hover .hl-arrow { opacity: 1; }

/* 팀 이름만 강조색 */
.tagline .team-name {
  color: var(--accent);
  transition: color .22s var(--ease);
}
.tagline a:hover .team-name { color: var(--accent-2); }

@media (prefers-reduced-motion: reduce) {
  .home-body .hero-links a:hover { background-size: 100% 1.5px; }
}

/* ── 모바일: 텍스트 링크 터치 영역 확보 ─────────── */
/* 데스크톱에선 글자만 있는 얇은 링크라 손가락으로 누르기 어렵다.
   보이는 모습은 그대로 두고 위아래 여백만 키워 44px 이상 확보. */
@media (max-width: 680px) {
  .home-body .hero-links { gap: 0 28px; }
  .home-body .hero-links a { padding: 13px 0; }
  .tagline a { padding-bottom: 6px; }
}

/* ── 본문 이미지: 투명 배경 대응 ─────────────────── */
/* 문서/노션에서 캡처한 다이어그램은 배경이 투명하고 글씨가 검정인 경우가 많다.
   어두운 테마에서 그대로 두면 안 보이므로 이미지 뒤에 흰 바탕을 깐다.
   불투명 이미지는 이 바탕을 완전히 가리므로 겉보기 변화가 없다. */
.post-body img {
  background: #ffffff;
}

/* ── 깊은 단계 제목 (h4~h6) ──────────────────────── */
/* Notion 문서가 3단계(#/##/###)를 쓰면 한 칸씩 밀려 h4 까지 내려온다.
   여기까지 스타일이 없으면 소제목이 그냥 굵은 문장처럼 보인다. */
.post-body h4 {
  margin: 32px 0 10px;
  font-size: 16.5px;
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.45;
  color: var(--fg);
  scroll-margin-top: 90px;
}
.post-body h4::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 2px;
  margin-right: 9px;
  vertical-align: middle;
  background: var(--accent);
}

.post-body h5,
.post-body h6 {
  margin: 26px 0 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--fg-2);
  scroll-margin-top: 90px;
}