/* ============================================================
   Tech Guide Series template — docs-style single post
   Scoped under body.bdwt-techguide-post / .bdwt-tg-* namespace
   ============================================================ */

body.bdwt-techguide-post {
  --tg-blue:    #1E7BFF;
  --tg-teal:    #009E85;
  --tg-purple:  #6040C8;
  --tg-amber:   #C07010;
  --tg-red:     #D03020;
  --tg-green:   #1A8040;

  --tg-bg:      #FFFFFF;
  --tg-bg2:     #F7F8FA;
  --tg-bg3:     #F0F2F5;
  --tg-border:  #E4E7EC;
  --tg-border2: #CDD2DA;

  --tg-ink:     #111827;
  --tg-ink2:    #374151;
  --tg-muted:   #6B7280;
  --tg-light:   #9CA3AF;

  background: var(--tg-bg);
}

/* ─── HERO ─── */
.bdwt-tg-hero {
  background: var(--tg-bg2);
  border-bottom: 1px solid var(--tg-border);
  padding: 2.4rem 1.5rem 2rem;
}
.bdwt-tg-hero-inner { max-width: 1240px; margin: 0 auto; }
.bdwt-tg-breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 0.78rem; color: var(--tg-muted); margin-bottom: 1.1rem; }
.bdwt-tg-breadcrumb a { color: var(--tg-blue); text-decoration: none; transition: opacity 0.15s; }
.bdwt-tg-breadcrumb a:hover { opacity: 0.75; }
.bdwt-tg-bc-sep { color: var(--tg-light); }

.bdwt-tg-category-pill {
  display: inline-flex; align-items: center;
  font-family: 'DM Mono', monospace, monospace;
  font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--tg-blue); background: rgba(30,123,255,0.1);
  border-radius: 20px; padding: 4px 12px; margin-bottom: 0.9rem;
}
.bdwt-tg-title {
  font-family: 'Noto Sans SC', sans-serif; font-weight: 800; font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  letter-spacing: -0.02em; line-height: 1.18; color: var(--tg-ink); margin-bottom: 0.9rem; max-width: 900px;
}
.bdwt-tg-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; font-size: 0.82rem; color: var(--tg-muted); }
.bdwt-tg-sep { color: var(--tg-light); }

/* ─── BODY LAYOUT ─── */
.bdwt-tg-body {
  max-width: 1240px; margin: 0 auto;
  display: flex; align-items: flex-start; gap: 2.5rem;
  padding: 2.4rem 1.5rem 4rem;
}

/* ─── SIDEBAR ─── */
.bdwt-tg-sidebar { width: 250px; flex-shrink: 0; }
.bdwt-tg-sidebar-sticky { position: sticky; top: 1.5rem; }
.bdwt-tg-sb-label {
  font-family: 'DM Mono', monospace, monospace; font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--tg-light); padding: 0.4rem 0.2rem; margin-top: 1.1rem;
}
.bdwt-tg-sb-label:first-child { margin-top: 0; }
.bdwt-tg-sb-items { display: flex; flex-direction: column; }
.bdwt-tg-sb-item {
  display: flex; align-items: center; gap: 8px;
  padding: 0.5rem 0.6rem; margin: 0 -0.6rem;
  font-size: 0.85rem; color: var(--tg-ink2); text-decoration: none;
  border-radius: 8px; border-left: 2px solid transparent;
  transition: background 0.12s, color 0.12s;
}
.bdwt-tg-sb-item:hover { background: #EDF2FF; color: var(--tg-blue); }
.bdwt-tg-sb-item.is-active { background: #EDF2FF; color: var(--tg-blue); border-left-color: var(--tg-blue); font-weight: 600; }
.bdwt-tg-sb-icon { font-size: 14px; flex-shrink: 0; width: 18px; text-align: center; }

.bdwt-tg-sb-share { margin-top: 1.8rem; padding-top: 1.2rem; border-top: 1px solid var(--tg-border); }
.bdwt-tg-sb-share-label { font-size: 0.72rem; color: var(--tg-muted); margin-bottom: 0.6rem; }
.bdwt-tg-sb-share-btns { display: flex; gap: 8px; }
.bdwt-tg-share-btn {
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--tg-bg3); border: 1px solid var(--tg-border); color: var(--tg-ink2);
  cursor: pointer; transition: background 0.15s, color 0.15s;
}
.bdwt-tg-share-btn:hover { background: var(--tg-blue); color: #fff; border-color: var(--tg-blue); }
.bdwt-tg-share-btn svg { width: 15px; height: 15px; fill: currentColor; }
.bdwt-tg-share-btn.is-copied { background: var(--tg-teal); color: #fff; border-color: var(--tg-teal); }

/* ─── ARTICLE ─── */
.bdwt-tg-article { flex: 1; min-width: 0; max-width: 820px; }

.bdwt-tg-entry-excerpt p { font-size: 1.02rem; color: var(--tg-ink2); line-height: 1.7; margin-bottom: 1.4rem; font-weight: 500; }
.bdwt-tg-featured-image { margin: 0 0 1.6rem; }
.bdwt-tg-featured-image img { width: 100%; height: auto; border-radius: 12px; display: block; }

.bdwt-tg-toc {
  background: var(--tg-bg2); border: 1px solid var(--tg-border); border-radius: 10px;
  padding: 1.1rem 1.3rem; margin-bottom: 2rem;
}
.bdwt-tg-toc-head { font-family: 'DM Mono', monospace, monospace; font-size: 0.6rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--tg-muted); margin-bottom: 0.6rem; }
.bdwt-tg-toc-list { list-style: none; display: flex; flex-direction: column; gap: 0.35rem; margin: 0; padding: 0; counter-reset: bdwt-tg-toc; }
.bdwt-tg-toc-sub { list-style: none; margin: 0.25rem 0 0 1.2rem; padding: 0; display: flex; flex-direction: column; gap: 0.3rem; }
.bdwt-tg-toc-link { font-size: 0.82rem; color: var(--tg-ink2); text-decoration: none; display: flex; align-items: center; gap: 8px; transition: color 0.15s; }
.bdwt-tg-toc-item > .bdwt-tg-toc-link::before { content: counter(bdwt-tg-toc); counter-increment: bdwt-tg-toc; font-family: 'DM Mono', monospace, monospace; font-size: 0.62rem; color: var(--tg-light); min-width: 16px; }
.bdwt-tg-toc-link:hover, .bdwt-tg-toc-link.active { color: var(--tg-blue); }

.bdwt-tg-article-body { line-height: 1.85; color: var(--tg-ink2); font-size: 1rem; }
.bdwt-tg-article-body h2 {
  font-family: 'Noto Sans SC', sans-serif; font-weight: 700; font-size: 1.35rem;
  letter-spacing: -0.015em; color: var(--tg-ink); margin: 2.4rem 0 1rem;
  padding-top: 0.6rem; border-top: 1px solid var(--tg-border);
  scroll-margin-top: 90px;
}
.bdwt-tg-article-body h2:first-child { border-top: none; margin-top: 0; padding-top: 0; }
.bdwt-tg-article-body h3 { font-family: 'Noto Sans SC', sans-serif; font-weight: 600; font-size: 1.08rem; color: var(--tg-ink); margin: 1.6rem 0 0.6rem; scroll-margin-top: 90px; }
.bdwt-tg-article-body p { margin-bottom: 1rem; }
.bdwt-tg-article-body ul, .bdwt-tg-article-body ol { padding-left: 1.4rem; margin-bottom: 1rem; }
.bdwt-tg-article-body li { margin-bottom: 0.4rem; line-height: 1.75; }
.bdwt-tg-article-body strong { color: var(--tg-ink); font-weight: 600; }
.bdwt-tg-article-body img { max-width: 100%; height: auto; border-radius: 10px; display: block; margin: 1.2rem 0; border: 1px solid var(--tg-border); }
.bdwt-tg-article-body a { color: var(--tg-blue); border-bottom: 1px solid rgba(30,123,255,.3); text-decoration: none; }

.bdwt-tg-article-body pre {
  background: var(--tg-ink); color: #E8F0FF;
  border-radius: 10px; padding: 1.2rem 1.4rem; margin: 1.3rem 0;
  font-family: 'DM Mono', monospace, monospace; font-size: 0.82rem; line-height: 1.65;
  overflow-x: auto; position: relative;
}
.bdwt-tg-article-body .code-lang {
  position: absolute; top: 8px; right: 12px;
  font-family: 'DM Mono', monospace, monospace; font-size: 0.58rem;
  color: #6B8AAA; letter-spacing: 0.1em; text-transform: uppercase;
}
.bdwt-tg-article-body code {
  font-family: 'DM Mono', monospace, monospace; font-size: 0.85rem;
  background: var(--tg-bg3); color: var(--tg-blue);
  border: 1px solid var(--tg-border); border-radius: 4px; padding: 1px 5px;
}
.bdwt-tg-article-body pre code { background: none; border: none; color: inherit; font-size: inherit; padding: 0; }

.bdwt-tg-article-body .callout {
  border-radius: 9px; padding: 1rem 1.1rem; margin: 1.3rem 0;
  display: flex; gap: 10px; font-size: 0.9rem; line-height: 1.65;
  border-left: 3px solid;
}
.bdwt-tg-article-body .callout-icon { flex-shrink: 0; font-size: 16px; margin-top: 1px; }
.bdwt-tg-article-body .callout-body strong { display: block; font-size: 0.86rem; margin-bottom: 3px; }
.bdwt-tg-article-body .callout.info { background: #EEF3FD; border-color: var(--tg-blue); color: #1a3a6e; }
.bdwt-tg-article-body .callout.warn { background: #FEF3E2; border-color: var(--tg-amber); color: #5a3a00; }
.bdwt-tg-article-body .callout.success { background: #E8F7F0; border-color: var(--tg-teal); color: #0a3a28; }
.bdwt-tg-article-body .callout.danger { background: #FEE8E8; border-color: var(--tg-red); color: #5a1010; }
.bdwt-tg-article-body .callout strong { color: inherit; }

.bdwt-tg-article-body .steps { display: flex; flex-direction: column; gap: 0; margin: 1.3rem 0; }
.bdwt-tg-article-body .step { display: flex; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--tg-border); }
.bdwt-tg-article-body .step:last-child { border-bottom: none; }
.bdwt-tg-article-body .step-num {
  width: 26px; height: 26px; border-radius: 50%; flex-shrink: 0;
  background: var(--tg-blue); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: 'DM Mono', monospace, monospace; font-size: 0.72rem; font-weight: 500; margin-top: 1px;
}
.bdwt-tg-article-body .step-title { font-weight: 600; font-size: 0.95rem; margin-bottom: 4px; color: var(--tg-ink); }
.bdwt-tg-article-body .step-body { font-size: 0.88rem; color: var(--tg-ink2); line-height: 1.65; }

.bdwt-tg-article-body .guide-table { width: 100%; border-collapse: collapse; margin: 1.1rem 0; font-size: 0.88rem; }
.bdwt-tg-article-body .guide-table th { background: var(--tg-bg2); padding: 0.65rem 0.9rem; text-align: left; font-weight: 600; font-size: 0.82rem; color: var(--tg-ink2); border: 1px solid var(--tg-border); }
.bdwt-tg-article-body .guide-table td { padding: 0.65rem 0.9rem; border: 1px solid var(--tg-border); color: var(--tg-ink2); vertical-align: top; }
.bdwt-tg-article-body .guide-table tr:hover td { background: var(--tg-bg2); }

/* ─── PREV/NEXT NAV ─── */
.bdwt-tg-article-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--tg-border); }
.bdwt-tg-nav-btn {
  display: flex; flex-direction: column; gap: 3px; flex: 1;
  padding: 0.9rem 1.1rem; border: 1px solid var(--tg-border); border-radius: 9px;
  text-decoration: none; transition: border-color 0.2s, background 0.2s;
  max-width: calc(50% - 0.5rem);
}
.bdwt-tg-nav-btn:hover { border-color: var(--tg-blue); background: var(--tg-bg2); }
.bdwt-tg-nav-next { margin-left: auto; text-align: right; align-items: flex-end; }
.bdwt-tg-nav-dir { font-family: 'DM Mono', monospace, monospace; font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--tg-light); }
.bdwt-tg-nav-title { font-size: 0.88rem; font-weight: 500; color: var(--tg-blue); }

/* ─── AUTHOR BOX ─── */
.bdwt-tg-author-box {
  display: flex; gap: 1rem; align-items: flex-start;
  margin-top: 2.8rem; padding: 1.3rem; background: var(--tg-bg2);
  border: 1px solid var(--tg-border); border-radius: 12px;
}
.bdwt-tg-author-avatar { border-radius: 50%; flex-shrink: 0; }
.bdwt-tg-author-name { font-family: 'Noto Sans SC', sans-serif; font-weight: 700; font-size: 0.98rem; color: var(--tg-ink); }
.bdwt-tg-author-role { font-size: 0.78rem; color: var(--tg-muted); margin-bottom: 0.5rem; }
.bdwt-tg-author-bio { font-size: 0.86rem; color: var(--tg-ink2); line-height: 1.6; margin: 0; }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .bdwt-tg-body { flex-direction: column; }
  .bdwt-tg-sidebar { width: 100%; }
  .bdwt-tg-sidebar-sticky { position: static; }
  .bdwt-tg-sb-items { flex-direction: row; flex-wrap: wrap; gap: 6px; }
  .bdwt-tg-sb-item { margin: 0; }
  .bdwt-tg-sb-share { display: none; }
  .bdwt-tg-article { max-width: 100%; }
}
@media (max-width: 560px) {
  .bdwt-tg-article-nav { flex-direction: column; }
  .bdwt-tg-nav-btn, .bdwt-tg-nav-next { max-width: 100%; }
  .bdwt-tg-author-box { flex-direction: column; align-items: center; text-align: center; }
}