/* 티나 교육 페이지 공통 스타일 */
:root {
  --bg: #FBFAF7; --card: #FFFFFF; --soft: #F3F1EA; --line: #E5E2D8;
  --text: #1E1A2E; --sub: #5B5570; --muted: #8A8499;
  --accent: #E8662E; --accent-soft: #FDEDE4; --violet: #7C5CE0; --violet-soft: #EFEAFD;
  --code-bg: #1D1B2B; --inline-bg: #EFECE4;
  --ok: #1F9D6A; --warn: #C2410C;
  --mono: 'JetBrains Mono', Consolas, monospace; --font: 'Noto Sans KR', system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121118; --card: #1A1922; --soft: #201F2A; --line: #2D2B38;
    --text: #ECEAF4; --sub: #A9A5BA; --muted: #7D7990;
    --accent: #FF8A57; --accent-soft: #3A2318; --violet: #A68BFF; --violet-soft: #2A2342;
    --code-bg: #15141E; --inline-bg: #262432;
    --ok: #4ADE9B; --warn: #FB923C;
  }
}
:root[data-theme="dark"] {
  --bg: #121118; --card: #1A1922; --soft: #201F2A; --line: #2D2B38;
  --text: #ECEAF4; --sub: #A9A5BA; --muted: #7D7990;
  --accent: #FF8A57; --accent-soft: #3A2318; --violet: #A68BFF; --violet-soft: #2A2342;
  --code-bg: #15141E; --inline-bg: #262432;
  --ok: #4ADE9B; --warn: #FB923C;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.75; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); }

/* 헤더 */
.hd { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.hd .in { max-width: 1160px; margin: 0 auto; padding: 0 16px; height: 58px; display: flex; align-items: center; gap: 10px; font-size: 14px; }
.hd .home { font-weight: 900; color: var(--text); text-decoration: none; }
.crumbs { display: flex; gap: 6px; align-items: center; color: var(--muted); min-width: 0; overflow: hidden; white-space: nowrap; }
.crumbs span:last-child { color: var(--sub); overflow: hidden; text-overflow: ellipsis; }
.theme-btn { margin-left: auto; border: 1px solid var(--line); background: var(--card); color: var(--text); width: 36px; height: 36px;
  border-radius: 10px; cursor: pointer; font-size: 16px; flex-shrink: 0; }
.progress { position: absolute; left: 0; bottom: -1px; height: 2px; width: 0; background: linear-gradient(90deg, var(--accent), var(--violet)); }

/* 레이아웃 */
.layout { max-width: 1160px; margin: 0 auto; padding: 0 16px; display: grid; grid-template-columns: minmax(0, 1fr) 230px; gap: 56px; }
@media (max-width: 980px) { .layout { grid-template-columns: minmax(0, 1fr); } .toc { display: none; } }
article { min-width: 0; padding: 44px 0 80px; }

/* 표지 */
.meta-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.chip { font-family: var(--mono); font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px;
  background: var(--violet-soft); color: var(--violet); }
h1 { font-size: clamp(30px, 5vw, 44px); font-weight: 900; line-height: 1.25; letter-spacing: -1px; margin-bottom: 16px; }
.lead { font-size: 17px; color: var(--sub); margin-bottom: 28px; }
.lead b { color: var(--text); }

.pick { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 8px; }
@media (max-width: 560px) { .pick { grid-template-columns: 1fr; } }
.pick a { display: block; text-decoration: none; color: var(--text); padding: 18px 20px; border-radius: 14px; border: 1px solid var(--line);
  background: var(--card); transition: transform .15s, border-color .15s; }
.pick a:hover { transform: translateY(-2px); border-color: var(--accent); }
.pick small { display: block; font-size: 12px; font-weight: 700; color: var(--accent); margin-bottom: 2px; }
.pick a:last-child small { color: var(--violet); }
.pick strong { font-size: 17px; }
.pick p { font-size: 13.5px; color: var(--sub); margin-top: 4px; }

/* 본문 */
h2 { font-size: 26px; font-weight: 900; letter-spacing: -.5px; margin: 64px 0 18px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
h2 .num { font-family: var(--mono); font-size: 14px; color: #fff; background: var(--accent); border-radius: 8px; padding: 2px 9px; }
h2 .badge { font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
h2 .badge.v { background: var(--violet-soft); color: var(--violet); }
h3 { font-size: 19px; font-weight: 700; margin: 36px 0 12px; }
p { margin-bottom: 14px; }
ol, ul { padding-left: 22px; margin-bottom: 16px; }
li { margin-bottom: 8px; }
li::marker { color: var(--accent); font-weight: 700; }
code { font-family: var(--mono); font-size: .86em; background: var(--inline-bg); padding: 2px 6px; border-radius: 6px; word-break: break-word; }

/* 코드 블록 */
.code { margin: 14px 0 22px; border-radius: 14px; overflow: hidden; background: var(--code-bg); border: 1px solid rgba(255,255,255,.06);
  box-shadow: 0 10px 30px rgba(20,16,40,.12); }
.code-hd { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: rgba(255,255,255,.04); border-bottom: 1px solid rgba(255,255,255,.06); }
.dots { display: flex; gap: 6px; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: #FF5F57; }
.dots i:nth-child(2) { background: #FEBC2E; } .dots i:nth-child(3) { background: #28C840; }
.fname { font-family: var(--mono); font-size: 13px; color: #CFCBE4; margin-left: 6px; }
.copy { margin-left: auto; font-family: var(--font); font-size: 12px; font-weight: 700; color: #CFCBE4; background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12); border-radius: 8px; padding: 5px 11px; cursor: pointer; transition: background .15s; }
.copy:hover { background: rgba(255,255,255,.16); }
.copy.done { color: #4ADE9B; border-color: #4ADE9B; }
.code pre[class*="language-"] { margin: 0; padding: 18px 20px; background: transparent; font-family: var(--mono); font-size: 13.5px; line-height: 1.7;
  max-height: 640px; overflow: auto; tab-size: 4; }
.code code { background: none; padding: 0; font-size: inherit; word-break: normal; }
.code.collapsed pre { max-height: 360px; overflow: hidden; -webkit-mask-image: linear-gradient(#000 70%, transparent); mask-image: linear-gradient(#000 70%, transparent); }
.expand { display: block; width: 100%; padding: 10px; background: rgba(255,255,255,.04); color: #CFCBE4; border: 0; border-top: 1px solid rgba(255,255,255,.06);
  font-family: var(--font); font-size: 13px; font-weight: 700; cursor: pointer; }
.expand:hover { background: rgba(255,255,255,.08); }

/* 설명 카드 */
.explain { display: grid; gap: 12px; margin: 16px 0 20px; }
.ex { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--violet); border-radius: 12px; padding: 14px 18px; }
.ex h4 { font-size: 15px; font-weight: 600; color: var(--violet); margin-bottom: 4px; }
.ex p { margin: 0; font-size: 15px; color: var(--sub); }

.note { display: flex; gap: 12px; background: var(--accent-soft); border-radius: 12px; padding: 14px 18px; margin: 18px 0; font-size: 15px; }
.note .ic { font-size: 18px; line-height: 1.6; }
.note p { margin: 0; }
.note.warn { background: color-mix(in srgb, var(--warn) 12%, transparent); }

/* 표 */
.table-wrap { overflow-x: auto; margin: 16px 0 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 560px; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
thead th { background: var(--soft); font-size: 13px; color: var(--sub); }
thead th:nth-child(2) { color: var(--accent); } thead th:nth-child(3) { color: var(--violet); }
tbody td:first-child { font-weight: 700; white-space: nowrap; }
tbody td:nth-child(3) { background: color-mix(in srgb, var(--violet) 5%, transparent); }

/* 체크리스트 */
.checks { list-style: none; padding: 0; counter-reset: c; }
.checks li { position: relative; padding: 14px 18px 14px 58px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 10px; }
.checks li::before { counter-increment: c; content: counter(c); position: absolute; left: 16px; top: 13px; width: 28px; height: 28px; border-radius: 8px;
  background: var(--accent); color: #fff; font-family: var(--mono); font-weight: 600; font-size: 14px; display: grid; place-items: center; }

/* 목차 */
.toc { position: sticky; top: 82px; align-self: start; padding: 44px 0; font-size: 14px; }
.toc h5 { font-size: 12px; letter-spacing: 1.5px; color: var(--muted); margin-bottom: 12px; }
.toc a { display: block; padding: 6px 12px; border-left: 2px solid var(--line); color: var(--sub); text-decoration: none; transition: color .15s, border-color .15s; }
.toc a.sub { padding-left: 24px; font-size: 13px; }
.toc a:hover { color: var(--text); }
.toc a.on { color: var(--accent); border-left-color: var(--accent); font-weight: 700; }

footer { border-top: 1px solid var(--line); padding: 28px 16px 40px; text-align: center; font-size: 13px; color: var(--muted); }
footer a { color: var(--sub); }

/* ── 설정 안내 페이지 추가 요소 ── */
.flow-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin: 8px 0 12px; counter-reset: f; }
@media (max-width: 760px) { .flow-steps { grid-template-columns: 1fr; } }
.flow-steps a { position: relative; display: block; text-decoration: none; color: var(--text); background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px 14px 12px; font-size: 14px; font-weight: 700; transition: border-color .15s, transform .15s; }
.flow-steps a:hover { border-color: var(--accent); transform: translateY(-2px); }
.flow-steps a::before { counter-increment: f; content: counter(f, decimal-leading-zero); display: block; font-family: var(--mono); font-size: 12px; color: var(--accent); margin-bottom: 2px; }
.flow-steps a small { display: block; font-size: 12px; font-weight: 500; color: var(--sub); margin-top: 2px; }

.tabs { margin: 16px 0 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); overflow: hidden; }
.tab-list { display: flex; flex-wrap: wrap; gap: 4px; padding: 8px; background: var(--soft); border-bottom: 1px solid var(--line); }
.tab-list button { font-family: var(--font); font-size: 14px; font-weight: 700; color: var(--sub); background: none; border: 0; border-radius: 9px;
  padding: 8px 14px; cursor: pointer; }
.tab-list button:hover { color: var(--text); }
.tab-list button[aria-selected="true"] { background: var(--card); color: var(--accent); box-shadow: 0 1px 4px rgba(0,0,0,.08); }
.tab-panel { padding: 18px 20px 6px; }
.tab-panel[hidden] { display: none; }
.tab-panel .code { margin-top: 10px; }

.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; font-size: 15px; margin: 4px 0 14px; }
.kv dt { font-family: var(--mono); font-size: 13.5px; font-weight: 600; color: var(--violet); padding-top: 2px; }
.kv dd { color: var(--sub); }

.errs { display: grid; gap: 12px; margin: 16px 0 20px; }
.err { background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.err summary { list-style: none; cursor: pointer; padding: 14px 18px; font-weight: 700; display: flex; gap: 10px; align-items: baseline; }
.err summary::-webkit-details-marker { display: none; }
.err summary::before { content: '▸'; color: var(--accent); transition: transform .15s; }
.err[open] summary::before { transform: rotate(90deg); }
.err summary code { color: var(--warn); }
.err .body { padding: 0 18px 14px 40px; color: var(--sub); font-size: 15px; }
.err .body p { margin-bottom: 8px; }

.related { display: flex; align-items: center; gap: 14px; margin: 48px 0 0; padding: 18px 20px; border-radius: 14px; text-decoration: none; color: var(--text);
  background: linear-gradient(100deg, var(--accent-soft), var(--violet-soft)); border: 1px solid var(--line); transition: transform .15s; }
.related:hover { transform: translateY(-2px); }
.related .ic { font-size: 26px; }
.related small { display: block; font-size: 12px; font-weight: 700; color: var(--accent); }
.related strong { font-size: 17px; }

.sources { font-size: 13.5px; color: var(--muted); margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line); }
.sources h4 { font-size: 13px; color: var(--sub); margin-bottom: 6px; }
.sources ul { padding-left: 18px; margin: 0; }
.sources a { color: var(--sub); word-break: break-all; }
/* 한 줄짜리 연결 문자열은 줄바꿈 */
.code pre.language-none, .code pre.language-none code { white-space: pre-wrap; word-break: break-all; }
.err summary code { white-space: nowrap; flex-shrink: 0; }
.err .body ol { margin: 0 0 4px; }