/* 상세 페이지(아티클·FAQ 답변·교과서 챕터) — 디자인 핸드오프 design_handoff_12code_detail_pages 반영, 2026-09-21.
   규칙: 인덱스 페이지는 흰색 헤더, 읽는 글(상세)은 검정 밴드. 액센트 컬러·세로/가로 컬러 바·틴트 채움 금지.
   색은 (1) 검정 헤더 밴드 (2) 출처 배지 공식/업계 (3) 판정 배지 통합·유지, 학습 통과·제한 에만 쓴다. */

.dt-mono{ font-family:'IBM Plex Mono',monospace; }
.dt-arch{ font-family:'Archivo',sans-serif; }

/* 읽기 진행바 — 사이트 상단바(54px) 바로 아래에 붙는다 */
.dt-rbar{ position:sticky; top:54px; z-index:19; background:var(--bg); border-bottom:1px solid var(--line); }
.dt-rbar .in{ max-width:1160px; margin:0 auto; padding:0 22px; }
.dt-rbar .row{ display:flex; align-items:center; gap:14px; padding:9px 0; flex-wrap:nowrap; }
.dt-rbar .k{ flex:none; font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.16em; color:var(--fg-3); }
.dt-rbar .here{ flex:1; min-width:0; font-size:13px; font-weight:500; letter-spacing:-.01em; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.dt-rbar .idx{ flex:none; font-family:'IBM Plex Mono',monospace; font-size:10.5px; color:var(--fg-3); }
.dt-rbar button{ flex:none; padding:5px 11px; background:transparent; color:var(--fg); border:1px solid var(--line-2); border-radius:2px; cursor:pointer; font-size:12px; font-family:inherit; }
.dt-rbar button[aria-expanded="true"]{ background:var(--cta-bg); color:var(--cta-fg); }
.dt-rbar .track{ height:2px; background:var(--bg-deep); margin-bottom:-1px; }
.dt-rbar .track span{ display:block; height:2px; width:0; background:var(--fg); }
.dt-rbar .pop{ border-top:1px solid var(--line); background:var(--bg-sub); }
.dt-rbar .pop[hidden]{ display:none; }
.dt-rbar .pop .g{ max-width:1160px; margin:0 auto; padding:12px 22px 16px; display:grid; grid-template-columns:repeat(auto-fill,minmax(250px,1fr)); gap:2px; }
.dt-rbar .pop a{ display:flex; gap:10px; padding:8px 10px; align-items:baseline; }
.dt-rbar .pop a:hover, .dt-rbar .pop a.on{ background:var(--bg-deep); }
.dt-rbar .pop .n{ flex:none; font-family:'IBM Plex Mono',monospace; font-size:10px; color:var(--fg-3); }
.dt-rbar .pop .t{ flex:1; font-size:12.5px; line-height:1.55; color:var(--fg-2); }

/* 검정 헤더 밴드 */
.dt-hero{ background:var(--fg); color:var(--bg); }
.dt-hero .in{ max-width:1160px; margin:0 auto; padding:0 22px; }
.dt-hero .txt{ max-width:820px; padding:26px 0 30px; }
.dt-crumb{ display:flex; align-items:baseline; gap:8px; font-family:'IBM Plex Mono',monospace; font-size:10.5px; letter-spacing:.05em; flex-wrap:wrap; }
.dt-crumb a{ color:inherit; opacity:.6; }
.dt-crumb a:hover{ opacity:1; }
.dt-crumb .sep{ opacity:.34; }
.dt-crumb .cur{ font-weight:600; }
.dt-h1{ margin:16px 0 0; font-size:31px; font-weight:600; line-height:1.35; letter-spacing:-.035em; }
.dt-deck{ margin:15px 0 0; font-size:16px; line-height:1.78; opacity:.76; max-width:660px; }
.dt-hrow{ margin-top:22px; display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
.dt-dots{ flex:none; display:flex; gap:3px; }
.dt-dots i{ display:block; width:16px; height:4px; background:currentColor; opacity:.28; }
.dt-dots i.on{ opacity:1; }
.dt-hnote{ flex:none; font-family:'IBM Plex Mono',monospace; font-size:10.5px; letter-spacing:.06em; opacity:.62; }
.dt-badge{ flex:none; padding:2px 9px; border:1px solid rgba(255,255,255,.4); border-radius:2px; font-family:'IBM Plex Mono',monospace; font-size:10px; letter-spacing:.06em; }
:root[data-theme="dark"] .dt-badge{ border-color:rgba(0,0,0,.4); }
.dt-badge.solid{ background:var(--bg); color:var(--fg); border-color:var(--bg); padding:4px 11px; font-size:11.5px; font-weight:600; letter-spacing:0; }

/* 본문 영역 */
.dt-sec{ max-width:1160px; margin:0 auto; padding:0 22px 80px; }
.dt-meta{ display:grid; grid-template-columns:repeat(5,1fr); gap:1px; background:var(--line-2); border:1px solid var(--line-2); border-top:0; }
.dt-meta > div{ background:var(--bg); padding:11px 13px; min-width:0; }
.dt-meta .k{ display:block; font-family:'IBM Plex Mono',monospace; font-size:9px; letter-spacing:.14em; color:var(--fg-3); }
.dt-meta .v{ display:block; margin-top:4px; font-size:12.5px; line-height:1.45; font-weight:500; letter-spacing:-.01em; }
.dt-rail{ display:grid; grid-template-columns:minmax(0,1fr) 272px; gap:32px; padding-top:36px; align-items:start; }
.dt-rail.faq{ grid-template-columns:minmax(0,1fr) 280px; padding-top:30px; }
.dt-rail > article{ min-width:0; }
.dt-side{ position:sticky; top:118px; min-width:0; max-height:calc(100vh - 134px); overflow:auto; scrollbar-width:thin; }
.dt-rail.faq .dt-side{ top:74px; max-height:calc(100vh - 90px); }
.dt-panel{ border:1px solid var(--line-2); margin-top:14px; }
.dt-panel:first-child{ margin-top:0; }
.dt-panel .hd{ display:flex; align-items:baseline; gap:8px; padding:11px 14px; background:var(--bg-sub); border-bottom:1px solid var(--line); font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.18em; color:var(--fg-3); }
.dt-panel .hd .r{ margin-left:auto; font-size:10px; letter-spacing:0; }
.dt-panel .toc{ padding:8px 0; }
.dt-panel .toc a{ display:flex; gap:10px; padding:7px 14px; align-items:baseline; border-left:2px solid transparent; }
.dt-panel .toc a.on{ border-left-color:var(--fg); }
.dt-panel .toc .n{ flex:none; font-family:'IBM Plex Mono',monospace; font-size:10px; color:var(--fg-3); }
.dt-panel .toc .t{ flex:1; font-size:12px; line-height:1.5; color:var(--fg-2); }
.dt-panel .toc a.on .t{ color:var(--fg); }
.dt-panel .lrow{ display:flex; gap:10px; align-items:baseline; padding:9px 14px; border-top:1px solid var(--line); }
.dt-panel .lrow:hover{ background:var(--bg-sub); }
.dt-panel .lrow.cur{ background:var(--bg-deep); }
.dt-panel .lrow .n{ flex:none; font-family:'IBM Plex Mono',monospace; font-size:10px; color:var(--fg-3); }
.dt-panel .lrow .t{ flex:1; font-size:11.5px; line-height:1.5; color:var(--fg-2); }
.dt-panel .lrow.cur .n, .dt-panel .lrow.cur .t{ color:var(--fg); font-weight:600; }
.dt-panel .more{ display:block; padding:11px 14px; border-top:1px solid var(--line-2); font-size:12.5px; font-weight:600; }
.dt-panel.plain .hd{ display:block; }
.dt-note{ margin-top:14px; padding:14px; background:var(--bg-sub); border:1px solid var(--line); }
.dt-note .k{ margin:0; font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.18em; color:var(--fg-3); }
.dt-note .h{ margin:9px 0 0; font-size:13.5px; font-weight:600; line-height:1.5; letter-spacing:-.015em; }
.dt-note .p{ margin:5px 0 0; font-size:12px; line-height:1.65; color:var(--fg-2); }
.dt-note .p.first{ margin-top:9px; line-height:1.75; }
.dt-note a.cta{ display:inline-block; margin-top:10px; font-size:12.5px; font-weight:600; border-bottom:1.5px solid var(--fg); }
.dt-note.line{ background:transparent; border-color:var(--line-2); }

/* 핵심요약 */
.dt-sum{ border:1px solid var(--line-3); }
.dt-sum .hd{ display:flex; align-items:center; gap:10px; padding:11px 18px; background:var(--fg); color:var(--bg); font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.18em; }
.dt-sum .hd .r{ margin-left:auto; font-size:10px; letter-spacing:0; opacity:.56; }
.dt-sum .it{ display:flex; gap:15px; padding:13px 18px; border-top:1px solid var(--line); }
.dt-sum .it .n{ flex:none; font-family:'Archivo',sans-serif; font-size:15px; font-weight:700; line-height:1.5; color:var(--fg-3); }
.dt-sum .it p{ margin:0; flex:1; font-size:14.5px; line-height:1.72; letter-spacing:-.01em; }

/* 본문 섹션(고스트 번호 + 질문형 H2) */
.dt-s{ padding-top:20px; margin-top:28px; border-top:1px solid var(--line); scroll-margin-top:118px; }
.dt-s .hd{ display:flex; align-items:baseline; gap:13px; }
.dt-s .hd .no{ flex:none; width:34px; font-family:'Archivo',sans-serif; font-size:28px; font-weight:700; line-height:1; color:var(--line-2); letter-spacing:-.02em; }
.dt-s .hd h2{ margin:0; flex:1; font-size:22px; font-weight:600; line-height:1.45; letter-spacing:-.03em; padding:0; border:0; }
.dt-s .bd{ padding-left:47px; }
.dt-s .bd > :first-child{ margin-top:15px; }
.dt-s .bd p{ margin:17px 0 0; font-size:16px; line-height:1.88; letter-spacing:-.01em; }
.dt-s .bd ul, .dt-s .bd ol{ margin:15px 0 0; padding-left:22px; font-size:16px; line-height:1.85; letter-spacing:-.01em; }
.dt-s .bd li{ margin:5px 0; }
.dt-s .bd h3{ margin:24px 0 0; font-size:17px; font-weight:600; letter-spacing:-.02em; }
.dt-s .bd h4{ margin:20px 0 0; font-size:15.5px; font-weight:600; }
.dt-s .bd blockquote{ margin:17px 0 0; padding:2px 0 2px 16px; border-left:1px solid var(--line-2); color:var(--fg-2); }
.dt-s .bd table{ margin:17px 0 0; border-collapse:collapse; width:100%; font-size:14px; }
.dt-s .bd th, .dt-s .bd td{ border:1px solid var(--line-2); padding:8px 11px; text-align:left; vertical-align:top; }
.dt-s .bd th{ background:var(--bg-sub); font-weight:600; }
.dt-s .bd a{ border-bottom:1px solid var(--line-2); }
.dt-s .bd code{ font-family:'IBM Plex Mono',monospace; font-size:.9em; background:var(--bg-sub); padding:1px 5px; }
.dt-s .bd pre{ margin:17px 0 0; padding:14px 16px; background:var(--bg-sub); border:1px solid var(--line); overflow:auto; font-size:13px; line-height:1.7; }
.dt-s .bd pre code{ background:none; padding:0; }
.dt-s .bd strong{ font-weight:600; }

/* 다음 행동 · 다음 글 · 출처 · 프로모 */
.dt-act{ margin-top:34px; padding:22px 24px; background:var(--bg-sub); border:1px solid var(--line-2); }
.dt-act .k{ margin:0; font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.18em; color:var(--fg-3); }
.dt-act .b{ margin:11px 0 0; font-size:16px; line-height:1.8; font-weight:500; letter-spacing:-.015em; }
.dt-act .b p{ margin:0; }
.dt-act .b p + p, .dt-act .b ul, .dt-act .b ol{ margin-top:8px; }
.dt-next{ display:block; margin-top:12px; padding:20px 24px; border:1px solid var(--line-3); }
.dt-next:hover{ background:var(--bg-sub); }
.dt-next .top{ display:flex; align-items:center; gap:10px; }
.dt-next .k{ font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.18em; color:var(--fg-3); }
.dt-next .arw{ margin-left:auto; font-family:'IBM Plex Mono',monospace; font-size:13px; }
.dt-next .t{ display:block; margin-top:10px; font-size:17px; font-weight:600; line-height:1.5; letter-spacing:-.025em; }
.dt-prev{ margin-top:10px; font-size:12.5px; color:var(--fg-3); }
.dt-prev a{ border-bottom:1px solid var(--line-2); color:var(--fg-2); }
.dt-h2bar{ margin-top:38px; padding-top:14px; border-top:2px solid var(--line-3); }
.dt-h2bar .row{ display:flex; align-items:baseline; gap:12px; flex-wrap:wrap; }
.dt-h2bar h2{ margin:0; font-size:18px; font-weight:600; letter-spacing:-.03em; padding:0; border:0; }
.dt-h2bar .sub, .dt-h2bar .r{ font-family:'IBM Plex Mono',monospace; font-size:10.5px; color:var(--fg-3); }
.dt-h2bar .r{ margin-left:auto; }
.dt-src{ margin-top:12px; border-bottom:1px solid var(--line); }
.dt-src .row{ display:flex; gap:14px; align-items:baseline; padding:11px 4px; border-top:1px solid var(--line); }
a.dt-src-a:hover, .dt-src a.row:hover{ background:var(--bg-sub); }
.dt-src .id{ flex:none; width:38px; font-family:'IBM Plex Mono',monospace; font-size:11px; font-weight:600; color:var(--fg-3); }
.dt-src .nm{ flex:1; min-width:0; }
.dt-src .nm b{ display:block; font-size:13.5px; line-height:1.55; letter-spacing:-.01em; font-weight:400; }
.dt-src .nm i{ display:block; margin-top:2px; font-family:'IBM Plex Mono',monospace; font-size:10.5px; color:var(--fg-3); font-style:normal; word-break:break-all; }
.dt-src .kd{ flex:none; padding:2px 7px; border:1px solid var(--line-2); border-radius:2px; font-family:'IBM Plex Mono',monospace; font-size:9.5px; color:var(--fg-2); }
.dt-src .kd.ok{ border-color:var(--ok); color:var(--ok); }
.dt-srcnote{ margin:12px 0 0; font-size:12.5px; line-height:1.75; color:var(--fg-3); }
.dt-promo{ margin-top:34px; padding:24px; background:var(--fg); color:var(--bg); display:flex; align-items:center; gap:22px; flex-wrap:wrap; }
.dt-promo .tx{ flex:1; min-width:240px; }
.dt-promo .k{ margin:0; font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.18em; opacity:.56; }
.dt-promo .h{ margin:9px 0 0; font-size:19px; font-weight:600; letter-spacing:-.025em; }
.dt-promo .p{ margin:6px 0 0; font-size:13.5px; line-height:1.7; opacity:.7; }
.dt-promo a.cta{ flex:none; padding:12px 20px; background:var(--bg); color:var(--fg); border-radius:2px; font-size:13.5px; font-weight:600; }

/* FAQ 답변 */
.dt-chips{ border:1px solid var(--line-2); }
.dt-chips .hd{ margin:0; padding:11px 16px; background:var(--bg-sub); border-bottom:1px solid var(--line); font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.18em; color:var(--fg-3); }
.dt-chips .bd{ padding:13px 16px; display:flex; flex-wrap:wrap; gap:6px; }
.dt-chips .bd span{ padding:5px 10px; border:1px solid var(--line); border-radius:2px; font-size:12.5px; line-height:1.4; color:var(--fg-2); }
.dt-verdict{ margin-top:22px; padding:22px 24px; border:2px solid var(--line-3); }
.dt-verdict .k{ margin:0; font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.18em; color:var(--fg-3); }
.dt-verdict .b{ margin:11px 0 0; font-size:19px; font-weight:600; line-height:1.62; letter-spacing:-.025em; }
.dt-figs{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line-2); border:1px solid var(--line-2); border-top:0; }
.dt-figs.c3{ grid-template-columns:repeat(3,1fr); }
.dt-figs.c2{ grid-template-columns:repeat(2,1fr); }
.dt-figs > div{ background:var(--bg); padding:14px; min-width:0; }
.dt-figs .k{ display:block; font-family:'IBM Plex Mono',monospace; font-size:9px; letter-spacing:.14em; color:var(--fg-3); }
.dt-figs .v{ display:block; margin-top:7px; font-family:'Archivo',sans-serif; font-size:26px; font-weight:700; line-height:1; letter-spacing:-.02em; }
.dt-figs .d{ display:block; margin-top:7px; font-size:11.5px; line-height:1.55; color:var(--fg-2); }
.dt-ans-h{ margin-top:34px; padding-bottom:9px; border-bottom:2px solid var(--line-3); display:flex; align-items:baseline; gap:12px; }
.dt-ans-h h2{ margin:0; font-size:18px; font-weight:600; letter-spacing:-.03em; padding:0; border:0; }
.dt-ans-h .r{ margin-left:auto; font-family:'IBM Plex Mono',monospace; font-size:10.5px; color:var(--fg-3); }
.dt-step{ display:flex; gap:16px; padding:20px 0 18px; border-bottom:1px solid var(--line); }
.dt-step .no{ flex:none; width:26px; font-family:'Archivo',sans-serif; font-size:19px; font-weight:700; line-height:1.4; color:var(--line-2); }
.dt-step .bd{ flex:1; min-width:0; }
.dt-step .hd{ margin:0; font-size:15.5px; font-weight:600; letter-spacing:-.02em; line-height:1.5; }
.dt-step .tx{ margin:10px 0 0; font-size:15.5px; line-height:1.85; letter-spacing:-.01em; }
.dt-step .hd + .tx{ margin-top:10px; }
.dt-step .tx:first-child{ margin-top:0; }
.dt-step .tx + .tx{ margin-top:12px; }
.dt-fig{ margin:18px 0 0; }
.dt-fig .box{ border:1px solid var(--line-2); margin:0; padding:0; background:transparent; }
.dt-fig figcaption{ margin:9px 0 0; font-size:12px; line-height:1.6; color:var(--fg-3); }
.dt-fig figcaption b{ font-family:'IBM Plex Mono',monospace; font-weight:400; letter-spacing:.1em; margin-right:7px; }
/* 그림: 계층 계단 */
.dt-stair{ display:flex; align-items:center; border-bottom:1px solid var(--line); }
.dt-stair:last-child{ border-bottom:0; }
.dt-stair .gt{ flex:none; height:52px; background:var(--fg); }
.dt-stair .mid{ flex:1; min-width:0; padding:10px 14px; }
.dt-stair .lv{ font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.14em; color:var(--fg-3); margin-right:8px; }
.dt-stair .nm{ font-size:14px; font-weight:600; letter-spacing:-.015em; }
.dt-stair .sub{ display:block; margin-top:3px; font-size:12px; line-height:1.5; color:var(--fg-2); }
.dt-stair .rt{ flex:none; padding:0 14px; text-align:right; }
.dt-stair .rt i{ display:block; font-style:normal; font-family:'IBM Plex Mono',monospace; font-size:9px; letter-spacing:.1em; color:var(--fg-3); }
.dt-stair .rt b{ display:block; margin-top:3px; font-family:'IBM Plex Mono',monospace; font-size:11.5px; font-weight:400; }
/* 그림: 막대 비교 */
.dt-cmp{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line-2); border:1px solid var(--line-2); }
.dt-cmp > div{ background:var(--bg); padding:15px 16px 17px; min-width:0; }
.dt-cmp .top{ display:flex; align-items:center; gap:8px; }
.dt-cmp .tag{ font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.14em; color:var(--fg-3); }
.dt-cmp .st{ margin-left:auto; padding:2px 8px; border:1px solid var(--line-2); border-radius:2px; font-family:'IBM Plex Mono',monospace; font-size:9.5px; }
.dt-cmp .st.ok{ border-color:var(--ok); color:var(--ok); }
.dt-cmp .st.no{ border-color:var(--fail); color:var(--fail); }
.dt-cmp .nm{ display:block; margin-top:9px; font-size:14px; font-weight:600; letter-spacing:-.02em; }
.dt-cmp .bars{ display:flex; align-items:flex-end; gap:4px; margin-top:14px; height:56px; }
.dt-cmp .bars span{ flex:1; display:flex; flex-direction:column; justify-content:flex-end; height:56px; }
.dt-cmp .bars em{ display:block; font-style:normal; font-family:'IBM Plex Mono',monospace; font-size:8.5px; text-align:center; color:var(--fg-3); margin-bottom:3px; }
.dt-cmp .bars span.ok em{ color:var(--fg); }
.dt-cmp .bars u{ display:block; text-decoration:none; background:var(--line-2); }
.dt-cmp .bars span.ok u{ background:var(--fg); }
.dt-cmp .ax{ display:block; margin-top:5px; height:1px; background:var(--line-3); }
.dt-cmp .res{ display:flex; align-items:baseline; gap:6px; margin-top:6px; font-family:'IBM Plex Mono',monospace; }
.dt-cmp .res i{ font-style:normal; font-size:9.5px; color:var(--fg-3); }
.dt-cmp .res b{ margin-left:auto; font-size:11px; font-weight:400; }
.dt-cmp .res b.ok{ color:var(--ok); } .dt-cmp .res b.no{ color:var(--fail); }
.dt-cmp .note{ display:block; margin-top:9px; font-size:12px; line-height:1.65; color:var(--fg-2); }
/* 그림: 판정표 */
.dt-rules .hd{ display:flex; align-items:baseline; gap:12px; padding:10px 14px; background:var(--fg); color:var(--bg); font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.14em; }
.dt-rules .hd span:first-child{ flex:1; }
.dt-rules .hd span:last-child{ flex:none; width:76px; text-align:right; }
.dt-rules .rw{ display:flex; align-items:center; gap:12px; padding:11px 14px; border-top:1px solid var(--line); }
.dt-rules .rw .c{ flex:1; min-width:0; font-size:13.5px; line-height:1.55; letter-spacing:-.01em; }
.dt-rules .rw .a{ flex:none; width:76px; text-align:right; }
.dt-rules .rw .a span{ padding:2px 9px; border:1px solid var(--line-2); border-radius:2px; font-family:'IBM Plex Mono',monospace; font-size:10px; }
.dt-rules .rw .a span.ok{ border-color:var(--ok); color:var(--ok); }
.dt-rules .rw .a span.no{ border-color:var(--fail); color:var(--fail); }
/* 그림: 가로 막대 */
.dt-hbar{ padding:16px 18px 18px; }
.dt-hbar .ttl{ display:block; font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.14em; color:var(--fg-3); }
.dt-hbar .list{ margin-top:14px; display:flex; flex-direction:column; gap:11px; }
.dt-hbar .r{ display:flex; align-items:center; gap:12px; }
.dt-hbar .r .l{ flex:none; width:92px; font-family:'IBM Plex Mono',monospace; font-size:11.5px; color:var(--fg-2); }
.dt-hbar .r .tr{ flex:1; min-width:0; height:22px; background:var(--bg-deep); display:flex; align-items:center; }
.dt-hbar .r .tr span{ display:flex; align-items:center; height:22px; background:var(--fg); color:var(--bg); padding:0 9px; font-family:'IBM Plex Mono',monospace; font-size:11px; white-space:nowrap; }
.dt-hbar .r .v{ flex:none; width:62px; text-align:right; font-family:'IBM Plex Mono',monospace; font-size:10.5px; color:var(--fg-3); }
.dt-hbar .foot{ margin:13px 0 0; font-size:12px; line-height:1.7; color:var(--fg-2); }
/* 확인 · 지금 할 일 */
.dt-cav{ margin-top:18px; padding:15px 17px; border:1px solid var(--line-2); display:flex; gap:13px; }
.dt-cav .k{ flex:none; font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.14em; color:var(--warn); padding-top:3px; }
.dt-cav p{ margin:0; font-size:13.5px; line-height:1.75; color:var(--fg-2); }
.dt-act.tight{ margin-top:12px; padding:20px 22px; }
/* 같이 보면 좋은 게시글 */
.dt-rel{ border-bottom:1px solid var(--line); }
.dt-rel a{ display:flex; gap:16px; padding:15px 4px; border-top:1px solid var(--line); }
.dt-rel a:hover{ background:var(--bg-sub); }
.dt-rel .sn{ flex:none; width:54px; }
.dt-rel .sn i{ display:block; font-style:normal; font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:.06em; color:var(--fg-3); }
.dt-rel .sn b{ display:block; margin-top:3px; font-family:'Archivo',sans-serif; font-size:17px; font-weight:700; line-height:1; color:var(--line-2); }
.dt-rel .tt{ flex:1; min-width:0; }
.dt-rel .tt i{ display:block; font-style:normal; font-family:'IBM Plex Mono',monospace; font-size:10px; letter-spacing:.04em; color:var(--fg-3); }
.dt-rel .tt b{ display:block; margin-top:5px; font-size:15px; font-weight:600; line-height:1.5; letter-spacing:-.02em; }
.dt-rel .go{ flex:none; align-self:center; font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--fg-3); }
/* FAQ 우측 레일 */
.dt-area .bar{ margin-top:9px; height:6px; background:var(--bg-deep); }
.dt-area .bar span{ display:block; height:6px; background:var(--fg); }
.dt-area .cell{ padding:13px 14px; border-bottom:1px solid var(--line); }
.dt-area .cell p{ margin:0; font-size:13.5px; font-weight:600; letter-spacing:-.015em; }
.dt-area .cell p.m{ margin-top:6px; font-family:'IBM Plex Mono',monospace; font-size:10.5px; font-weight:400; color:var(--fg-3); letter-spacing:0; }
.dt-area .q{ display:flex; gap:10px; align-items:baseline; padding:10px 14px; border-bottom:1px solid var(--line); }
.dt-area .q:hover{ background:var(--bg-sub); }
.dt-area .q i{ flex:none; font-style:normal; font-family:'IBM Plex Mono',monospace; font-size:10px; color:var(--fg-3); }
.dt-area .q span{ flex:1; font-size:12px; line-height:1.5; color:var(--fg-2); }
.dt-area .back{ display:block; padding:11px 14px; font-size:12.5px; font-weight:600; }

/* 반응형 */
@media (max-width:1040px){
  .dt-rail, .dt-rail.faq{ grid-template-columns:1fr; gap:30px; }
  .dt-side, .dt-rail.faq .dt-side{ position:static; max-height:none; overflow:visible; }
}
@media (max-width:820px){
  .dt-meta{ grid-template-columns:repeat(2,1fr); }
  .dt-hide-sm{ display:none !important; }
  .dt-h1{ font-size:26px; }
}
@media (max-width:760px){
  .dt-figs, .dt-figs.c3{ grid-template-columns:repeat(2,1fr); }
  .dt-cmp{ grid-template-columns:1fr; }
  .dt-s .hd .no{ width:28px; font-size:23px; }
  .dt-s .bd{ padding-left:0; }
  .dt-s .hd h2{ font-size:19px; }
  .dt-step{ gap:11px; }
  .dt-hbar .r .l{ width:78px; }
}
@media (max-width:520px){
  .dt-h1{ font-size:23px; }
  .dt-stair .rt{ display:none; }
}
.dt-readmore{ margin-top:12px; font-size:15px; line-height:1.8; color:var(--fg-2); }
.dt-readmore p{ margin:0 0 8px; }
.dt-readmore ul, .dt-readmore ol{ margin:6px 0 0; padding-left:20px; }
.dt-readmore a{ border-bottom:1px solid var(--line-2); color:var(--fg); }