/* ─── ARTICLE HEADER ─── */
.article-header { max-width: 780px; margin: 0 auto; padding: 10rem 3rem 3rem; }
.article-breadcrumb { font-size: 0.72rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 2.5rem; }
.article-breadcrumb a { text-decoration: none; transition: color 0.2s; }
.article-breadcrumb a:hover { color: var(--text-secondary); }
.article-breadcrumb .sep { margin: 0 0.5rem; opacity: 0.4; }
.article-title { font-family: var(--serif); font-weight: 400; font-size: clamp(2rem, 4.5vw, 2.8rem); line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 1.25rem; }
.article-subtitle { font-size: 1rem; line-height: 1.7; color: var(--text-secondary); margin-bottom: 2.5rem; max-width: 680px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem; align-items: center; padding-top: 1.75rem; border-top: 1px solid var(--border); font-size: 0.75rem; color: var(--text-muted); }
.article-meta-item { display: flex; align-items: center; gap: 0.4rem; }
.article-meta-label { font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.62rem; color: var(--text-muted); }
.badge { font-size: 0.6rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.2rem 0.55rem; border: 1px solid; }
.badge-tlp { border-color: rgba(255, 255, 255, 0.15); color: var(--text-secondary); background: rgba(255, 255, 255, 0.04); }
.badge-verdict { border-color: rgba(192, 39, 45, 0.3); color: var(--crimson); background: var(--crimson-subtle); }

/* ─── ARTICLE BODY ─── */
.article-body { max-width: 780px; margin: 0 auto; padding: 3rem 3rem 5rem; }
.article-body h2 { font-family: var(--serif); font-weight: 400; font-size: 1.65rem; line-height: 1.3; letter-spacing: -0.01em; margin-top: 3.5rem; margin-bottom: 1.25rem; padding-top: 2.5rem; border-top: 1px solid var(--border); }
.article-body h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.article-body h3 { font-family: var(--sans); font-weight: 600; font-size: 1.05rem; letter-spacing: 0.01em; margin-top: 2.5rem; margin-bottom: 0.75rem; color: var(--text); }
.article-body p { font-size: 0.95rem; line-height: 1.8; color: var(--text-secondary); margin-bottom: 1.25rem; }
.article-body strong { color: var(--text); font-weight: 600; }
.article-body ul, .article-body ol { margin-left: 20px; font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 1.25rem; }
.article-body li { margin-bottom: 0.4rem; }

/* ─── CODE / MONOSPACE ─── */
code { font-family: var(--mono); font-size: 0.82em; background: var(--bg-surface); padding: 0.15em 0.4em; border: 1px solid var(--border); color: var(--text); word-break: break-all; }

/* ─── FIGURES ─── */
.article-figure { margin: 2rem 0 2.5rem; border: 1px solid var(--border); background: var(--bg-elevated); overflow: hidden; }

/* ─── LIGHTBOX ─── */
.lightbox-overlay { position: fixed; inset: 0; z-index: 99999; background: rgba(10, 10, 12, 0.95); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); display: flex; justify-content: center; align-items: center; opacity: 0; pointer-events: none; transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1); cursor: zoom-out; }
.lightbox-overlay.active { opacity: 1; pointer-events: auto; }
.lightbox-img { max-width: 90vw; max-height: 90vh; object-fit: contain; transform: scale(0.95); transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1); border: 1px solid var(--border); box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5); border-radius: 4px; }
.lightbox-overlay.active .lightbox-img { transform: scale(1); }
.article-figure img { width: 100%; display: block; cursor: zoom-in; transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s; }
.article-figure img:hover { opacity: 0.9; }
.article-figure figcaption { padding: 0.75rem 1.25rem; font-size: 0.72rem; line-height: 1.5; color: var(--text-muted); border-top: 1px solid var(--border); font-weight: 500; letter-spacing: 0.01em; }
.article-figure figcaption .fig-num { color: var(--crimson); font-weight: 600; margin-right: 0.35rem; }

/* ─── CALLOUT ─── */
.callout { margin: 2rem 0; padding: 1.25rem 1.5rem; border-left: 3px solid var(--crimson); background: var(--bg-elevated); border-top: 1px solid var(--border); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.callout-label { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--crimson); margin-bottom: 0.6rem; }
.callout p { font-size: 0.88rem; line-height: 1.7; color: var(--text-secondary); margin-bottom: 0; }
.callout-info { border-left-color: var(--text-muted); }
.callout-info .callout-label { color: var(--text-secondary); }

/* ─── TECHNIQUE CARDS ─── */
.technique-cards { margin: 2rem 0; display: flex; flex-direction: column; gap: 0; }
.technique-card { padding: 1.5rem 1.75rem; border: 1px solid var(--border); border-bottom: none; background: var(--bg-elevated); transition: background 0.2s; }
.technique-card:last-child { border-bottom: 1px solid var(--border); }
.technique-card:hover { background: var(--bg-surface); }
.technique-card-header { display: flex; align-items: baseline; gap: 0.75rem; margin-bottom: 0.6rem; }
.technique-num { font-family: var(--mono); font-size: 0.68rem; font-weight: 600; color: var(--crimson); letter-spacing: 0.02em; flex-shrink: 0; }
.technique-name { font-weight: 600; font-size: 0.9rem; color: var(--text); }
.technique-card p { font-size: 0.85rem; line-height: 1.7; color: var(--text-secondary); margin-bottom: 0; padding-left: 2.75rem; }

/* ─── KILL CHAIN ─── */
.kill-chain { margin: 2.5rem 0; padding: 2rem; border: 1px solid var(--border); background: var(--bg-elevated); }
.kill-chain-title { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 1.75rem; }
.kill-chain-flow { display: flex; flex-direction: column; gap: 0; position: relative; }
.kc-hop { display: grid; grid-template-columns: 3.5rem 1fr; gap: 1rem; position: relative; padding-bottom: 1.5rem; }
.kc-hop:last-child { padding-bottom: 0; }
.kc-marker { display: flex; flex-direction: column; align-items: center; position: relative; }
.kc-dot { width: 28px; height: 28px; border: 2px solid var(--crimson); background: var(--bg); display: flex; align-items: center; justify-content: center; font-family: var(--mono); font-size: 0.62rem; font-weight: 700; color: var(--crimson); flex-shrink: 0; position: relative; z-index: 2; }
.kc-line { width: 1px; flex: 1; background: linear-gradient(to bottom, var(--crimson), rgba(192, 39, 45, 0.2)); margin-top: 4px; }
.kc-hop:last-child .kc-line { display: none; }
.kc-content { padding-top: 0.15rem; }
.kc-label { font-weight: 600; font-size: 0.82rem; color: var(--text); margin-bottom: 0.35rem; display: flex; align-items: center; gap: 0.5rem; }
.kc-label .kc-tag { font-size: 0.58rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.1rem 0.4rem; background: var(--crimson-subtle); border: 1px solid rgba(192, 39, 45, 0.2); color: var(--crimson); }
.kc-detail { font-size: 0.78rem; line-height: 1.6; color: var(--text-muted); }
.kc-detail code { font-size: 0.74em; }

/* ─── IOC TABLE ─── */
.ioc-section { margin: 2rem 0; }
.ioc-category { margin-bottom: 1.5rem; }
.ioc-category-label { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); padding-bottom: 0.5rem; border-bottom: 1px solid var(--border); margin-bottom: 0; }
.ioc-table { width: 100%; border-collapse: collapse; }
.ioc-table tr { border-bottom: 1px solid var(--border); }
.ioc-table td { padding: 0.55rem 0; font-size: 0.82rem; vertical-align: top; }
.ioc-table td:first-child { color: var(--text-muted); font-weight: 500; width: 140px; padding-right: 1.5rem; font-size: 0.78rem; }
.ioc-table td:last-child { font-family: var(--mono); font-size: 0.78rem; color: var(--text); word-break: break-all; }

/* ─── TX TABLE ─── */
.tx-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: .82rem; }
.tx-table th { text-align: left; font-size: .68rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted); padding: .5rem .5rem; border-bottom: 2px solid var(--border-strong); }
.tx-table td { padding: .5rem .5rem; border-bottom: 1px solid var(--border); color: var(--text-secondary); vertical-align: top; font-size: .8rem; }
.tx-table td code { font-size: .75rem; }
.tx-table .amount-in { color: #4ade80; }
.tx-table .amount-out { color: #f87171; }

/* ─── PHASE CARDS ─── */
.phase-cards { margin: 2rem 0; display: flex; flex-direction: column; }
.phase-card { padding: 1.5rem 1.75rem; border: 1px solid var(--border); border-bottom: none; background: var(--bg-elevated); transition: background .2s; }
.phase-card:last-child { border-bottom: 1px solid var(--border); }
.phase-card:hover { background: var(--bg-surface); }
.phase-card-header { display: flex; align-items: baseline; gap: .75rem; margin-bottom: .6rem; }
.phase-num { font-family: var(--mono); font-size: .68rem; font-weight: 600; color: var(--crimson); letter-spacing: .02em; flex-shrink: 0; }
.phase-name { font-weight: 600; font-size: .9rem; color: var(--text); }
.phase-card p { font-size: .85rem; line-height: 1.7; color: var(--text-secondary); margin-bottom: 0; padding-left: 2.75rem; }

/* ─── MERMAID DIAGRAMS ─── */
.diagram-wrap { margin: 2.5rem 0; border: 1px solid var(--border); background: var(--bg-elevated); overflow: hidden; }
.diagram-header { display: flex; justify-content: space-between; align-items: center; padding: .75rem 1.25rem; border-bottom: 1px solid var(--border); }
.diagram-title { font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); }
.diagram-expand { font-size: .68rem; font-weight: 500; color: var(--text-muted); cursor: pointer; border: 1px solid var(--border); background: transparent; padding: .25rem .6rem; transition: all .2s; letter-spacing: .03em; }
.diagram-expand:hover { color: var(--text); border-color: var(--border-strong); }
.diagram-body { padding: 1.5rem; overflow-x: auto; display: flex; justify-content: center; }
.diagram-body .mermaid { width: 100%; min-height: 200px; }
.diagram-body svg { max-width: 100%; height: auto; }

/* ─── DIAGRAM MODAL ─── */
.diagram-modal { display: none; position: fixed; inset: 0; z-index: 10000; background: rgba(0,0,0,.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.diagram-modal.active { display: flex; flex-direction: column; }
.diagram-modal-bar { display: flex; justify-content: space-between; align-items: center; padding: .75rem 1.5rem; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.diagram-modal-title { font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--text-secondary); }
.diagram-modal-controls { display: flex; gap: .5rem; align-items: center; }
.diagram-modal-controls button { width: 32px; height: 32px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text-secondary); cursor: pointer; font-size: .85rem; display: flex; align-items: center; justify-content: center; transition: all .2s; }
.diagram-modal-controls button:hover { background: var(--bg-surface); color: var(--text); border-color: var(--border-strong); }
.diagram-modal-viewport { flex: 1; overflow: hidden; cursor: grab; position: relative; }
.diagram-modal-viewport.grabbing { cursor: grabbing; }
.diagram-modal-content { position: absolute; top: 0; left: 0; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; transition: none; }
.diagram-modal-content svg { max-width: none; max-height: none; }
.diagram-modal-hint { position: absolute; bottom: 1rem; left: 50%; transform: translateX(-50%); font-size: .68rem; color: var(--text-muted); letter-spacing: .04em; pointer-events: none; opacity: .6; }

/* ─── FOOTNOTES ─── */
.footnotes { margin-top: 3.5rem; padding-top: 2.5rem; border-top: 1px solid var(--border); }
.footnotes h2 { font-family: var(--sans); font-weight: 600; font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 1.5rem; margin-top: 0; padding-top: 0; border-top: none; }
.footnote-list { counter-reset: none; list-style-position: outside; margin-left: 2.5rem; font-size: 0.78rem; line-height: 1.7; color: var(--text-muted); }
.footnote-list li { margin-bottom: 0.5rem; padding-left: 0.25rem; }
.footnote-list li:target { color: var(--text); background: var(--crimson-subtle); margin-left: -0.5rem; padding-left: 0.75rem; border-left: 2px solid var(--crimson); }
.footnote-list a { color: var(--text-secondary); text-decoration: underline; text-decoration-color: var(--border); text-underline-offset: 2px; transition: color 0.2s; }
.footnote-list a:hover { color: var(--text); }
.fn-back { text-decoration: none !important; margin-left: 0.35rem; font-size: 0.7rem; color: var(--text-muted); }
.fn-back:hover { color: var(--crimson); }
sup a { color: var(--crimson); text-decoration: none; font-size: 0.65em; font-weight: 600; padding: 0 0.1em; }
sup a:hover { text-decoration: underline; }

/* ─── TAGS ─── */
.article-tags { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.article-tags-label { font-size: 0.62rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.75rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag { font-size: 0.68rem; font-weight: 500; padding: 0.25rem 0.6rem; border: 1px solid var(--border); color: var(--text-muted); letter-spacing: 0.02em; }

/* ─── RELATED INVESTIGATIONS ─── */
.related-investigations { margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.related-card { display: block; padding: 1rem 0; border-bottom: 1px solid var(--border); text-decoration: none; transition: all 0.2s; }
.related-card:hover { padding-left: 0.5rem; }
.related-card:hover .related-card-title { color: var(--crimson); }
.related-card-date { display: block; font-size: 0.68rem; color: var(--text-muted); letter-spacing: 0.04em; margin-bottom: 0.25rem; }
.related-card-title { display: block; font-size: 0.88rem; font-weight: 500; color: var(--text-secondary); line-height: 1.4; transition: color 0.2s; }

/* ─── CTA ─── */
.article-cta { margin-top: 3rem; padding: 2rem; border: 1px solid var(--border); background: var(--bg-elevated); text-align: center; }
.article-cta p { font-family: var(--serif); font-size: 1.1rem; color: var(--text-secondary); font-style: italic; margin-bottom: 0; }

/* ─── TABLE OF CONTENTS ─── */
.article-toc-wrapper { display: flex; max-width: 1100px; margin: 0 auto; position: relative; gap: 2rem; }
.article-toc-wrapper .article-body { flex: 1; max-width: 780px; }
.article-toc { position: sticky; top: 8rem; width: 170px; min-width: 170px; max-height: calc(100vh - 12rem); overflow-y: auto; overflow-x: visible; flex-shrink: 0; align-self: flex-start; scrollbar-width: thin; scrollbar-color: rgba(255,255,255,0.08) transparent; }
.article-toc::-webkit-scrollbar { width: 3px; }
.article-toc::-webkit-scrollbar-track { background: transparent; }
.article-toc::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
.article-toc-label { font-size: 0.58rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.75rem; }
.article-toc-list { list-style: none; margin: 0; padding: 0; }
.article-toc-list li { margin-bottom: 0; }
.article-toc-list a { display: block; padding: 0.25rem 0 0.25rem 0.65rem; font-size: 0.62rem; line-height: 1.35; color: var(--text-muted); text-decoration: none; border-left: 1px solid var(--border); transition: all 0.2s; }
.article-toc-list a:hover { color: var(--text-secondary); }
.article-toc-list a.active { color: var(--crimson); border-left: 2px solid var(--crimson); font-weight: 500; }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .article-toc { display: none; }
  .article-toc-wrapper { display: block; }
  .article-header { padding: 8rem 1.5rem 2rem; }
  .article-body { padding: 2rem 1.5rem 4rem; }
  .kc-hop { grid-template-columns: 2.5rem 1fr; gap: 0.75rem; }
  .technique-card p { padding-left: 0; }
  .phase-card p { padding-left: 0; }
  .ioc-table td:first-child { width: 100px; }
  .diagram-body { padding: 1rem; }
}

@media (max-width: 480px) {
  .article-title { font-size: 1.75rem; }
  .article-meta { gap: 0.5rem 1rem; }
}