.blog-hero { padding-bottom: 32px !important; }
.blog-hero .sec-head { margin-bottom: 28px; }
.blog-cats { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.blog-cats a { padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--bs-body-bg);
  color: var(--bs-body-color); text-decoration: none; font-weight: 600; font-size: .9rem; transition: all .15s; }
.blog-cats a:hover { border-color: var(--accent); color: var(--accent-text); }
.blog-cats a.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.site section.blog-list { padding-top: 24px; border-top: 0; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.blog-grid.three { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.blog-card { display: flex; flex-direction: column; border-radius: var(--radius-lg, 22px); overflow: hidden; background: var(--bs-body-bg);
  border: 1px solid var(--line); transition: transform .2s, box-shadow .2s, border-color .2s; }
.blog-card:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(15, 23, 42, .1); border-color: rgba(var(--accent-rgb), .4); }
.blog-card .cover { display: block; aspect-ratio: 1200 / 630; background: var(--surface); overflow: hidden; }
.blog-card .cover img { width: 100%; height: 100%; object-fit: cover; }
.blog-card .cover.no-img { display: flex; align-items: center; justify-content: center; font-size: 3rem; color: #fff;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #0f172a)); }
.blog-card .cover.cat-finance { background: linear-gradient(135deg, #d97706, #92400e); }
.blog-card .cover.cat-teaching { background: linear-gradient(135deg, #2563eb, #1e3a8a); }
.blog-card .cover.cat-marketing { background: linear-gradient(135deg, #7c3aed, #4c1d95); }
.blog-card .cover.cat-product { background: linear-gradient(135deg, #0891b2, #164e63); }
.blog-card .cover.no-img i { opacity: .9; filter: drop-shadow(0 6px 18px rgba(0, 0, 0, .25)); }
.blog-card .content { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.blog-card .meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; font-size: .82rem; color: var(--bs-secondary-color); margin-bottom: 10px; }
.blog-card .meta .cat { color: var(--accent-text); font-weight: 700; text-decoration: none; }
.blog-card .lang-badge { padding: 0 6px; border-radius: 6px; background: var(--surface-2); text-transform: uppercase; font-weight: 700; font-size: .72rem; }
.blog-card h2 { font-size: 1.18rem; font-weight: 750; line-height: 1.35; margin: 0 0 8px; letter-spacing: -.01em; }
.blog-card h2 a { color: var(--bs-emphasis-color); text-decoration: none; }
.blog-card h2 a:hover { color: var(--accent-text); }
.blog-card p { color: var(--bs-secondary-color); margin: 0 0 14px; flex: 1; }
.blog-card .more { font-weight: 700; text-decoration: none; color: var(--accent-text); }
@media (min-width: 992px) {
  .blog-card.big { grid-column: 1 / -1; flex-direction: row; }
  .blog-card.big .cover { flex: 0 0 54%; aspect-ratio: auto; min-height: 320px; }
  .blog-card.big .cover.no-img { font-size: 5rem; }
  .blog-card.big .content { padding: 36px 40px; justify-content: center; }
  .blog-card.big h2 { font-size: 1.9rem; }
  .blog-card.big p { flex: 0 0 auto; font-size: 1.05rem; }
}
.blog-empty { text-align: center; padding: 48px 0; color: var(--bs-secondary-color); }
.blog-empty i { font-size: 3rem; display: block; margin-bottom: 8px; }

.blog-cta { margin-top: 56px; padding: 36px 40px; border-radius: var(--radius-lg, 22px); display: flex; flex-wrap: wrap; gap: 20px 32px;
  align-items: center; justify-content: space-between;
  background: linear-gradient(135deg, rgba(var(--accent-rgb), .12), rgba(var(--accent-rgb), .03)); border: 1px solid rgba(var(--accent-rgb), .25); }
.site section.blog-cta { padding: 36px 40px; border-top: 1px solid rgba(var(--accent-rgb), .25); }
.blog-cta > div:first-child { max-width: 560px; }
.blog-cta .kicker { font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-text); }
.blog-cta h2 { font-size: 1.5rem; font-weight: 800; margin: 6px 0 8px; color: var(--bs-emphasis-color); }
.blog-cta p { margin: 0; color: var(--bs-secondary-color); }
.blog-cta .actions { display: flex; flex-wrap: wrap; gap: 10px; }

.blog-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; background: var(--accent); transform-origin: 0 50%;
  transform: scaleX(0); z-index: 1040; }
.post-head { padding: 48px 0 20px; }
.post-head .container, .blog-post > .container { max-width: 1080px; }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: .88rem; margin-bottom: 18px; }
.crumbs a { color: var(--bs-secondary-color); text-decoration: none; }
.crumbs a:hover { color: var(--accent-text); }
.crumbs i { font-size: .7rem; color: var(--bs-secondary-color); }
.post-head h1 { font-size: clamp(1.9rem, 4.2vw, 3rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.15;
  color: var(--bs-emphasis-color); max-width: 900px; margin: 0 0 14px; }
.post-head .lead-text { font-size: 1.15rem; color: var(--bs-secondary-color); max-width: 820px; }
.post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 22px; color: var(--bs-secondary-color); font-size: .92rem; margin-top: 18px; }
.post-meta .author { display: inline-flex; align-items: center; gap: 8px; color: var(--bs-emphasis-color); }
.post-meta .author img { width: 30px; height: 30px; border-radius: 9px; background: var(--surface); }
.post-note { max-width: 760px; }
.post-cover { margin: 8px 0 32px; border-radius: var(--radius-lg, 22px); overflow: hidden; border: 1px solid var(--line); }
.post-cover img { width: 100%; display: block; max-height: 520px; object-fit: cover; }
.post-grid { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 48px; align-items: start; padding-bottom: 72px; }
.post-grid.no-toc { grid-template-columns: minmax(0, 760px); justify-content: center; }
.post-toc { position: sticky; top: 92px; font-size: .9rem; padding: 16px 18px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line); }
.post-toc .toc-title { font-weight: 700; color: var(--bs-emphasis-color); margin-bottom: 8px; }
.post-toc ol { padding-left: 1.1rem; margin: 0; }
.post-toc li + li { margin-top: 6px; }
.post-toc a { color: var(--bs-secondary-color); text-decoration: none; }
.post-toc a:hover, .post-toc a.active { color: var(--accent-text); font-weight: 600; }
@media (max-width: 991.98px) {
  .post-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .post-toc { position: static; }
  .post-head { padding-top: 28px; }
}

.blog-body { font-size: 1.08rem; line-height: 1.8; color: var(--bs-body-color); max-width: 760px; overflow-wrap: break-word; }
.blog-body > :first-child { margin-top: 0; }
.blog-body h2 { font-size: 1.6rem; font-weight: 800; letter-spacing: -.01em; color: var(--bs-emphasis-color); margin: 2.4rem 0 .8rem; scroll-margin-top: 90px; }
.blog-body h3 { font-size: 1.22rem; font-weight: 750; color: var(--bs-emphasis-color); margin: 1.8rem 0 .6rem; scroll-margin-top: 90px; }
.blog-body p { margin: 0 0 1.15rem; }
.blog-body ul, .blog-body ol { padding-left: 1.4rem; margin: 0 0 1.2rem; }
.blog-body li + li { margin-top: .4rem; }
.blog-body li::marker { color: var(--accent-text); font-weight: 700; }
.blog-body a { color: var(--accent-text); text-underline-offset: 3px; }
.blog-body strong { color: var(--bs-emphasis-color); }
.blog-body blockquote { margin: 1.6rem 0; padding: 14px 20px; border-left: 4px solid var(--accent); border-radius: 0 14px 14px 0;
  background: rgba(var(--accent-rgb), .07); color: var(--bs-emphasis-color); }
.blog-body blockquote p:last-child { margin-bottom: 0; }
.blog-body img { max-width: 100%; height: auto; border-radius: 14px; }
.blog-body code { padding: 1px 6px; border-radius: 6px; background: var(--surface-2); font-size: .9em; }
.blog-body pre { padding: 14px 18px; border-radius: 12px; background: var(--surface); overflow: auto; }
.blog-body pre code { padding: 0; background: none; }
.blog-body hr { margin: 2rem 0; opacity: .15; }
.blog-body table { width: 100%; margin: 1.4rem 0; font-size: .96rem; border-collapse: collapse; display: block; overflow-x: auto; }
.blog-body th, .blog-body td { padding: 10px 14px; border: 1px solid var(--line); vertical-align: top; }
.blog-body thead th { background: var(--surface); color: var(--bs-emphasis-color); }
.post-share { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 2rem; padding-top: 1.4rem; border-top: 1px solid var(--line); max-width: 760px; }
.post-share > span { font-weight: 600; margin-right: 4px; }
.blog-post .blog-cta { max-width: 760px; }
.site section.blog-related { padding: 64px 0 80px; background: var(--surface); }
.blog-related h2 { font-size: 1.6rem; font-weight: 800; margin-bottom: 24px; color: var(--bs-emphasis-color); }

.md-editor { border: 1px solid var(--bs-border-color); border-radius: 12px; overflow: hidden; background: var(--bs-body-bg); }
.md-toolbar { display: flex; flex-wrap: wrap; gap: 2px; padding: 6px; border-bottom: 1px solid var(--bs-border-color); background: var(--surface); }
.md-toolbar button { border: 0; background: none; width: 34px; height: 32px; border-radius: 8px; color: var(--bs-body-color); }
.md-toolbar button:hover { background: var(--surface-2); color: var(--accent-text); }
.md-editor .md-input { border: 0; border-radius: 0; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92rem; line-height: 1.6; resize: vertical; }
.md-editor .md-input:focus { box-shadow: none; }
.md-editor .md-preview { padding: 18px 22px; min-height: 420px; max-width: none; font-size: 1rem; }
.md-help { display: grid; grid-template-columns: max-content 1fr; gap: 6px 14px; align-items: center; }
.lang-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-left: 6px; background: var(--line); vertical-align: middle; }
.lang-dot.filled { background: #16a34a; }
.blog-side { position: sticky; top: 84px; }
.cover-thumb { display: block; width: 100%; aspect-ratio: 1200 / 630; object-fit: cover; border-radius: 10px; border: 1px solid var(--line); }
@media print { .site-nav, .site-footer, .post-toc, .post-share, .blog-cta, .blog-related, .blog-progress { display: none !important; } }