*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --ink:        #0A0A0A;
      --ink-mid:    #000000;
      --ink-light:  #000000;
      --ink-faint:  #6F6F6F;
      --border:     #E6E6E6;
      --border-mid: #D2D2D2;
      --surface:    #F7F7F5;
      --surface-2:  #F0F0EE;
      --white:      #FFFFFF;
      --hero-bg:    #0A0A0A;
      --mono-bg:    #0A0A0A;
      --tl-panel:   #6E6E6E;
      --tl-panel-dark: #555555;
      --accent:     #0A0A0A;
      --accent-bg:  #F0F0EE;
      --accent-br:  #D2D2D2;
      --radius:     14px;
      --radius-sm:  10px;
      --radius-pill: 999px;
    }
    html { scroll-behavior: smooth; }
    body { font-family: 'Open Sans', system-ui, sans-serif; background: var(--white); color: var(--ink-mid); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
    h1,h2,h3,h4 { font-family: 'Open Sans', system-ui, sans-serif; color: var(--ink); }

    /* NAV — matches agenticfraud.com: sticky, centered links, no sidebar */
    nav { position: sticky; top: 0; z-index: 200; background: rgba(255,255,255,0.88); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color 0.25s; }
    nav.scrolled { border-bottom-color: var(--border); }
    .nav-inner { max-width: 1120px; margin: 0 auto; padding: 0 32px; height: 60px; display: flex; align-items: center; justify-content: center; }
    .nav-links { display: flex; gap: 30px; list-style: none; }
    .nav-links a { font-family: 'Open Sans',sans-serif; font-size: 13px; font-weight: 500; color: var(--ink-light); letter-spacing: -0.005em; text-decoration: none; padding: 4px 0; border-bottom: 1px solid transparent; transition: color 0.18s, border-color 0.18s; }
    .nav-links a:hover { color: var(--ink); }
    .nav-links a.active { color: var(--ink); border-bottom-color: var(--ink); }

    /* HERO — light, centered, matches agenticfraud.com */
    .hero { max-width: 1120px; margin: 0 auto; padding: 104px 32px 80px; border-bottom: 1px solid var(--border); text-align: center; }
    .hero-badge { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 36px; opacity: 0; animation: fUp 0.5s ease 0.05s forwards; }
    .hero-badge-item { font-family: 'JetBrains Mono',monospace; font-size: 11px; letter-spacing: 0.04em; color: var(--ink-light); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-pill); padding: 7px 15px; }
    .hero h1 { font-size: clamp(34px,9vw,90px); font-weight: 500; line-height: 1; letter-spacing: -0.035em; color: var(--ink); margin-bottom: 32px; white-space: nowrap; opacity: 0; animation: fUp 0.6s ease 0.15s forwards; }
    .hero-sub { font-family: 'Open Sans',sans-serif; font-size: 16px; font-weight: 400; color: var(--ink-light); max-width: 560px; line-height: 1.6; margin: 0 auto 36px; opacity: 0; animation: fUp 0.55s ease 0.3s forwards; }
    .hero-actions { display: flex; align-items: center; justify-content: center; gap: 20px; opacity: 0; animation: fUp 0.5s ease 0.45s forwards; }
    .hero-cta { display: inline-flex; align-items: center; gap: 9px; background: var(--ink); color: #fff; font-family: 'Open Sans',sans-serif; font-size: 13px; font-weight: 500; padding: 12px 20px; border-radius: var(--radius-pill); border: 1px solid var(--ink); text-decoration: none; transition: opacity 0.18s, transform 0.18s; }
    .hero-cta:hover { opacity: 0.85; }
    .hero-cta svg { width: 13px; height: 13px; }
    .hero-cta-ghost { background: transparent; color: var(--ink); border-color: transparent; padding-left: 4px; }
    .hero-cta-ghost:hover { opacity: 1; gap: 13px; }
    @keyframes fUp { to { opacity:1; transform:translateY(0); } }
    .hero h1, .hero-badge, .hero-sub { transform: translateY(12px); }

    /* LAYOUT — editorial two-column section, matches agenticfraud.com (no sidebar) */
    .shell { max-width: 1120px; margin: 0 auto; padding: 0 32px; }
    .content-section { display: grid; grid-template-columns: 132px 1fr; gap: 36px; padding: 88px 0; border-bottom: 1px solid var(--border); }
    .content-section:last-child { border-bottom: none; }
    .section-label { position: sticky; top: 92px; align-self: start; height: fit-content; }
    .section-num { display: block; font-family: 'JetBrains Mono',monospace; font-size: 13px; font-weight: 500; color: var(--ink); letter-spacing: 0.04em; margin-bottom: 8px; }
    .section-eyebrow { font-family: 'JetBrains Mono',monospace; font-size: 11px; letter-spacing: 0.04em; color: var(--ink-faint); text-transform: none; }
    .section-content { min-width: 0; }
    .section-title { font-size: clamp(26px,3.4vw,42px); font-weight: 500; line-height: 1.12; letter-spacing: -0.025em; margin-bottom: 22px; }
    .section-lead { font-size: 16px; font-weight: 400; line-height: 1.7; color: var(--ink-light); max-width: none; margin-bottom: 32px; }
    .body-text { font-size: 16px; line-height: 1.7; color: var(--ink-mid); margin-bottom: 18px; max-width: none; }

    /* TABLE */
    .table-card { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin: 24px 0; }
    .axes-table { width: 100%; border-collapse: collapse; }
    .axes-table th { font-family: 'JetBrains Mono',monospace; font-size: 8px; font-weight: 500; color: var(--ink-faint); text-align: left; padding: 11px 16px; background: var(--surface); border-bottom: 1px solid var(--border); letter-spacing: 0.12em; text-transform: uppercase; }
    .axes-table td { font-size: 16px; color: var(--ink-mid); padding: 14px 16px; border-bottom: 1px solid var(--border); vertical-align: top; line-height: 1.6; }
    .axes-table tbody tr:last-child td { border-bottom: none; }
    .axes-table tr.hl td { background: var(--surface-2); }
    .axes-table tr.hl td:first-child { border-left: 2px solid var(--accent); }
    .axes-table tr.hl td strong { color: var(--ink); }

    /* CALLOUT */
    .callout { padding: 24px 26px; margin: 24px 0; border-radius: var(--radius); border: 1px solid var(--border); }
    .callout-ey { display: inline-block; font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 10px; padding: 4px 10px; border-radius: var(--radius-pill); background: var(--white); border: 1px solid var(--border); }
    .callout-body { font-size: 12px; line-height: 1.6; }
    .c-red  { background: var(--surface-2); border: 1px solid var(--border); }
    .c-red .callout-ey { background: var(--ink); border-color: var(--ink); color: #fff; }
    .c-red .callout-body { color: var(--ink-mid); }
    .c-dark { background: var(--mono-bg); border: 1px solid var(--mono-bg); }
    .c-dark .callout-ey { background: rgba(255,255,255,0.07); border-color: rgba(255,255,255,0.16); color: #fff; }
    .c-dark .callout-body { color: #fff; font-size: 12px; line-height: 1.7; }
    .c-neutral { background: var(--surface); }
    .c-neutral .callout-ey { color: var(--ink-light); }
    .c-neutral .callout-body { color: var(--ink-mid); }

    /* IMG PLACEHOLDER */
    .diagram { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin: 28px 0 0; }
    .evidence { display: grid; grid-template-columns: 1fr 1.05fr; gap: 30px; align-items: start; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 28px; margin: 24px 0; }
    .evidence-media { display: grid; gap: 14px; min-width: 0; }
    .evidence-text { min-width: 0; }
    .evidence-media.evidence-pair { grid-template-columns: 1fr 1fr; }
.evidence-media.evidence-trio { grid-template-columns: repeat(3,1fr); }
    .evidence-featured { display: grid; grid-template-columns: 1fr; gap: 14px; }
    .evidence-featured-main img { width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    .evidence-featured-side { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .evidence-featured-side img { width: 100%; aspect-ratio: 1.28/1; object-fit: cover; display: block; border-radius: var(--radius-sm); }
    @media (max-width: 560px) { .evidence-featured-side { grid-template-columns: 1fr; } }
    .evidence-wide { grid-template-columns: 1.4fr 1fr; }
    .evidence-media img { width: 100%; height: auto; display: block; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--white); }
    .evidence-sub { font-family: 'JetBrains Mono',monospace; font-size: 9px; letter-spacing: 0.04em; color: var(--ink-faint); margin-top: 7px; line-height: 1.5; }
    .evidence-ey { font-family: 'JetBrains Mono',monospace; font-size: 10px; letter-spacing: 0.04em; color: var(--ink-faint); margin-bottom: 12px; }
    .evidence-text p { font-size: 16px; line-height: 1.7; color: var(--ink-mid); }
    .evidence-text p + p { margin-top: 12px; }
    .evidence-src { font-family: 'JetBrains Mono',monospace; font-size: 10px; letter-spacing: 0.03em; color: var(--ink-faint); margin-top: 14px; line-height: 1.6; }
    .diagram svg { display: block; width: 100%; height: auto; }
    .figcaption { font-size: 12px; line-height: 1.6; color: var(--ink-faint); margin: 10px 2px 0; }
    .figcaption strong { color: var(--ink-light); font-weight: 600; }
    .img-ph { width: 100%; border-radius: var(--radius); background: var(--surface); border: 1px dashed var(--border-mid); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; }
    .img-ph-label { font-family: 'JetBrains Mono',monospace; font-size: 9px; text-align: center; color: var(--ink-faint); padding: 0 16px; letter-spacing: 0.04em; }

    /* TWO VECTORS */
    .vectors-grid { display: grid; grid-template-columns: 1fr; gap: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin: 32px 0; }
    .vector-card { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; padding: 34px 32px; }
    .vector-card + .vector-card { border-top: 1px solid var(--border); }
    .v-baseline { background: var(--surface); }
    .v-agentic  { background: var(--white); }
    .vector-meta { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
    .vector-num { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.12em; color: var(--ink-faint); text-transform: uppercase; }
    .v-badge { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.08em; text-transform: uppercase; padding: 3px 8px; border-radius: var(--radius-pill); border: 1px solid var(--border-mid); color: var(--ink-light); background: var(--white); }
    .v-badge-red { border-color: var(--ink); color: #fff; background: var(--ink); }
    .vector-title { font-family: 'Open Sans',sans-serif; font-size: 17px; font-weight: 700; letter-spacing: -0.02em; color: var(--ink); margin-bottom: 6px; }
    .v-baseline .vector-title { color: var(--ink-light); }
    .vector-path { font-family: 'JetBrains Mono',monospace; font-size: 9px; color: var(--ink-faint); letter-spacing: 0.04em; margin-bottom: 16px; line-height: 1.6; }
    .v-agentic .vector-path { color: var(--accent); }
    .vector-diagram { width: 100%; height: 108px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-2); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; overflow: hidden; padding: 0 12px; }
    .v-def-label { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.1em; color: var(--ink-faint); text-transform: uppercase; margin-bottom: 4px; }
    .v-def-val { font-size: 16px; font-weight: 600; color: var(--ink-light); font-family: 'Open Sans',sans-serif; line-height: 1.4; }
    .v-agentic .v-def-val { color: var(--ink); }
    .vector-desc { font-size: 16px; line-height: 1.6; color: var(--ink-light); margin-bottom: 14px; }
    .v-agentic .vector-desc { color: var(--ink-mid); }
    .vector-methods { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
    .vector-method { display: flex; gap: 10px; align-items: flex-start; font-size: 16px; line-height: 1.6; color: var(--ink-mid); }
    .vector-method-num { font-family: 'JetBrains Mono',monospace; font-size: 9px; color: var(--ink); min-width: 14px; margin-top: 2px; }

    /* TECHNIQUE TAXONOMY */
    .pipeline { display: flex; align-items: stretch; flex-wrap: wrap; gap: 4px; margin: 8px 0 0; }
    .pl-stage { flex: 1 1 180px; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 18px 16px; background: var(--white); }
    .pl-title { font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 8px; letter-spacing: -0.01em; }
    .pl-desc { font-size: 12px; line-height: 1.6; color: var(--ink-light); margin-bottom: 12px; }
    .pl-codes { font-family: 'JetBrains Mono',monospace; font-size: 10px; color: var(--ink-faint); letter-spacing: 0.04em; }
    .pl-arrow { display: flex; align-items: center; color: var(--border-mid); font-size: 16px; flex: 0 0 auto; }
    .tool-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; }

    .tech-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 0; border: 1px solid var(--border); border-radius: var(--radius) var(--radius) 0 0; overflow: hidden; margin: 28px 0 0; }
    .tech-grid:has(+ .tech-panel.open) { border-radius: var(--radius) var(--radius) 0 0; }
    .tech-card { background: var(--white); padding: 18px 16px; cursor: pointer; transition: background 0.12s; position: relative; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
    .tech-card:nth-child(5n) { border-right: none; }
    .tech-card:nth-child(n+6) { border-bottom: none; }
    .tech-card:hover { background: var(--surface); }
    .tech-card.active { background: var(--ink); }
    .tech-card.active::after { content: none; }
    .tech-id { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.12em; color: var(--ink-faint); text-transform: uppercase; margin-bottom: 8px; }
    .tech-card.active .tech-id { color: #fff; }
    .tech-cluster { display: inline-block; font-family: 'JetBrains Mono',monospace; font-size: 7px; letter-spacing: 0.08em; text-transform: uppercase; padding: 2px 5px; border: 1px solid var(--border); color: var(--ink-faint); margin-bottom: 8px; }
    .tech-card.active .tech-cluster { border-color: rgba(255,255,255,0.25); color: #fff; background: transparent; }
    .tech-name { font-family: 'Open Sans',sans-serif; font-size: 12px; font-weight: 600; color: var(--ink); line-height: 1.35; margin-bottom: 6px; }
    .tech-card.active .tech-name { color: #fff; }
    .tech-tagline { font-size: 10px; color: var(--ink-faint); line-height: 1.5; }
    .tech-card.active .tech-tagline { color: #fff; }

    /* TECHNIQUE DETAIL PANEL */
    .tech-panel { border: 1px solid var(--border); border-top: none; border-radius: 0 0 var(--radius) var(--radius); overflow: hidden; max-height: 0; transition: max-height 0.45s cubic-bezier(0.22,1,0.36,1); }
    .tech-panel.open { max-height: 960px; }
    .tech-panel-inner { padding: 32px 36px; display: grid; grid-template-columns: 1fr 1fr; gap: 36px; background: var(--surface); }
    .tp-header { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
    .tp-id-badge { font-family: 'JetBrains Mono',monospace; font-size: 10px; font-weight: 500; color: var(--white); background: var(--accent); padding: 4px 10px; border-radius: var(--radius-pill); letter-spacing: 0.07em; }
    .tp-cluster-badge { font-family: 'JetBrains Mono',monospace; font-size: 9px; color: var(--ink-faint); background: var(--white); border: 1px solid var(--border); padding: 3px 9px; border-radius: var(--radius-pill); letter-spacing: 0.06em; }
    .tp-name { font-family: 'Open Sans',sans-serif; font-size: 20px; font-weight: 700; letter-spacing: -0.025em; color: var(--ink); margin-bottom: 14px; }
    .tp-how-label { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.14em; color: var(--ink-faint); text-transform: uppercase; margin-bottom: 8px; }
    .tp-how { font-size: 16px; line-height: 1.6; color: var(--ink-mid); }
    .tp-scenario-label { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.14em; color: var(--ink-faint); text-transform: uppercase; margin-bottom: 8px; }
    .tp-scenario { background: var(--mono-bg); border-radius: var(--radius-sm); padding: 16px 18px; font-size: 13px; line-height: 1.7; color: #fff; margin-bottom: 18px; }
    .tp-signals-label { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.14em; color: var(--ink-faint); text-transform: uppercase; margin-bottom: 8px; }
    .tp-signal { display: flex; gap: 10px; align-items: flex-start; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 16px; color: var(--ink-mid); line-height: 1.6; }
    .tp-signal:last-child { border-bottom: none; }
    .tp-signal::before { content: ''; width: 4px; height: 4px; background: var(--ink); border-radius: 50%; margin-top: 6px; flex-shrink: 0; }

    /* LOOP */
    .loop-wrap { margin-top: 28px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--white); padding: 22px 24px 26px; }
    .loop-track { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 10px; padding-bottom: 20px; margin-bottom: 24px; border-bottom: 1px solid var(--border); }
    .loop-step { display: inline-flex; align-items: center; gap: 9px; padding: 8px 15px 8px 8px; border: 1px solid transparent; border-radius: var(--radius-pill); background: transparent; cursor: pointer; transition: background 0.14s; }
    .loop-step:hover { background: var(--surface); }
    .loop-step.active { background: var(--ink); border-color: var(--ink); }
    .loop-step-num { width: 22px; height: 22px; border-radius: 50%; background: var(--surface-2); color: var(--ink-light); font-family: 'JetBrains Mono',monospace; font-size: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
    .loop-step.active .loop-step-num { background: rgba(255,255,255,0.2); color: #fff; }
    .loop-step-title { font-family: 'Open Sans',sans-serif; font-size: 13px; font-weight: 500; color: var(--ink); letter-spacing: -0.01em; }
    .loop-step.active .loop-step-title { color: #fff; }
    .loop-detail { min-height: 150px; }
    .loop-detail h4 { font-size: 19px; font-weight: 600; color: var(--ink); margin-bottom: 10px; letter-spacing: -0.02em; }
    .loop-detail p { font-size: 16px; line-height: 1.6; color: var(--ink-mid); }
    .loop-detail-tag { display: inline-block; color: var(--ink-light); background: var(--white); border: 1px solid var(--border); font-family: 'JetBrains Mono',monospace; font-size: 10px; letter-spacing: 0.04em; padding: 4px 11px; margin-bottom: 14px; }

    /* ROLES */
    .roles-grid { display: grid; grid-template-columns: 1fr; gap: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-top: 24px; }
    .role-card { background: var(--white); border-bottom: 1px solid var(--border); }
    .role-card:last-child { border-bottom: none; }
    .role-card-header { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; cursor: pointer; transition: background 0.12s; }
    .role-card-header:hover { background: var(--surface); }
    .role-card.open .role-card-header { background: var(--surface); border-bottom: 1px solid var(--border); }
    .role-left { display: flex; align-items: center; gap: 10px; }
    .role-tag { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.1em; text-transform: uppercase; color: #fff; background: var(--ink); border-radius: var(--radius-pill); padding: 3px 8px; }
    .role-title { font-family: 'Open Sans',sans-serif; font-size: 13px; font-weight: 600; color: var(--ink); }
    .role-chevron { color: var(--ink-faint); transition: transform 0.22s ease; }
    .role-card.open .role-chevron { transform: rotate(180deg); }
    .role-body { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
    .role-card.open .role-body { max-height: 600px; }
    .role-body-inner { padding: 18px 20px 20px; }
    .inject-callout { background: var(--mono-bg); border-radius: var(--radius-sm); padding: 14px 16px; margin-top: 12px; }
    .inject-callout .callout-ey { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.18); color: #fff; }
    .inject-callout p { font-size: 16px; line-height: 1.6; color: #fff; }

    /* DEFENSE */
    .defense-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-top: 24px; }
    .defense-card { background: var(--white); padding: 22px 20px; border-right: 1px solid var(--border); }
    .defense-card:last-child { border-right: none; }
    .d-badge { display: inline-block; font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.08em; text-transform: uppercase; padding: 3px 8px; border-radius: var(--radius-pill); border: 1px solid var(--border); color: var(--ink-faint); background: var(--surface); margin-bottom: 10px; }
    .d-badge-det { border-color: var(--ink); color: #fff; background: var(--ink); }
    .d-badge-prob { border-color: var(--border-mid); color: var(--ink-light); background: var(--white); }
    .defense-q { font-family: 'Open Sans',sans-serif; font-size: 19px; font-weight: 700; letter-spacing: -0.01em; color: var(--ink); margin-bottom: 12px; line-height: 1.3; }
    .defense-desc { font-size: 16px; line-height: 1.65; color: var(--ink-mid); }

    /* TWO COL */
    .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; margin-top: 32px; }
    .two-col-label { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.1em; color: var(--ink-faint); text-transform: uppercase; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--ink); }

    /* CTA SECTION */
    .cta-section { background: var(--hero-bg); border-top: 1px solid #181818; padding: 72px 48px; text-align: center; }
    .cta-section h2 { font-family: 'Open Sans',sans-serif; font-size: 28px; font-weight: 700; color: #fff; letter-spacing: -0.03em; margin-bottom: 12px; }
    .cta-section p { font-size: 16px; line-height: 1.6; color: #fff; max-width: 580px; margin: 0 auto 28px; }
    .cta-btn { display: inline-flex; align-items: center; gap: 9px; background: var(--white); color: var(--ink); font-family: 'Open Sans',sans-serif; font-size: 13px; font-weight: 600; letter-spacing: -0.01em; padding: 13px 24px; border: none; border-radius: var(--radius-pill); cursor: pointer; text-decoration: none; transition: opacity 0.18s, transform 0.18s; }
    .cta-btn:hover { opacity: 0.85; transform: translateY(-1px); }

    /* ABOUT / FOOTER */
    .about-section { background: var(--white); border-top: 1px solid var(--border); padding: 88px 48px; text-align: center; }
    .about-eyebrow { display: inline-block; font-family: 'JetBrains Mono',monospace; font-size: 11px; letter-spacing: 0.04em; color: var(--ink-light); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-pill); padding: 7px 15px; margin-bottom: 20px; text-transform: none; }
    .about-inner { max-width: 720px; margin: 0 auto; }
    .about-inner h3 { font-size: clamp(24px,2.8vw,32px); font-weight: 600; letter-spacing: -0.025em; color: var(--ink); margin-bottom: 20px; }
    .about-inner p { font-size: 16px; line-height: 1.7; color: var(--ink-light); margin-bottom: 14px; }
    .author-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; max-width: 920px; margin-left: auto; margin-right: auto; }
    .author-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 22px; background: var(--white); text-align: center; transition: border-color 0.18s, box-shadow 0.18s, transform 0.18s; }
    .author-card:hover { border-color: var(--border-mid); box-shadow: 0 8px 24px rgba(10,10,10,0.06); transform: translateY(-2px); }
    .author-avatar { width: 52px; height: 52px; border-radius: 50%; background: var(--ink); color: #fff; font-family: 'Open Sans',sans-serif; font-size: 15px; font-weight: 700; letter-spacing: -0.02em; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
    .author-name { font-family: 'Open Sans',sans-serif; font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
    .author-role { display: inline-block; font-family: 'JetBrains Mono',monospace; font-size: 9px; color: var(--ink-light); letter-spacing: 0.06em; border: 1px solid var(--border); border-radius: var(--radius-pill); padding: 3px 9px; margin-bottom: 14px; }
    .author-bio { font-size: 13px; line-height: 1.65; color: var(--ink-light); margin-bottom: 16px; }
    .author-link { font-family: 'JetBrains Mono',monospace; font-size: 9px; color: var(--ink); text-decoration: none; letter-spacing: 0.04em; display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--border); border-radius: var(--radius-pill); padding: 5px 12px; transition: background 0.15s, border-color 0.15s; }
    .author-link:hover { background: var(--surface); border-color: var(--border-mid); }
    footer { background: var(--white); padding: 32px 48px; display: flex; align-items: center; justify-content: center; border-top: 1px solid var(--ink); }
    .footer-legal { font-family: 'JetBrains Mono',monospace; font-size: 10px; color: var(--ink-faint); letter-spacing: 0.08em; text-transform: none; }

    /* TIMELINE */
    .tl-wrap { margin: 36px 0 28px; }
    .tl-container { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
    .tl-band { font-family: 'JetBrains Mono',monospace; font-size: 9px; letter-spacing: 0.1em; color: var(--ink-faint); padding: 11px 18px; text-transform: none; }
    .tl-band.tl-dark { background: var(--tl-panel); color: rgba(255,255,255,0.7); text-align: center; border-top: 1px solid rgba(255,255,255,0.22); }
    .tl-grid { display: grid; grid-template-columns: repeat(6,1fr); position: relative; }
    .tl-col { border-right: 1px solid var(--border); cursor: pointer; }
    .tl-col:last-child { border-right: none; }
    .tl-top { height: 82px; display: flex; flex-direction: column; justify-content: flex-end; gap: 4px; padding: 14px 13px 12px; background: var(--surface); transition: background 0.12s; }
    .tl-col.tl-active .tl-top { background: var(--surface-2); }
    .tl-date { font-family: 'JetBrains Mono',monospace; font-size: 9px; color: var(--ink-faint); letter-spacing: 0.02em; }
    .tl-tool { font-family: 'Open Sans',sans-serif; font-size: 12px; font-weight: 600; color: var(--ink); line-height: 1.2; }
    .tl-node { height: 0; border-top: 1px solid #B4B4B4; position: relative; }
    .tl-node::after { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 9px; height: 9px; border-radius: var(--radius-pill); background: var(--white); border: 2px solid #7A7A7A; }
    .tl-fr { padding: 13px 13px 14px; background: var(--tl-panel); height: 60px; transition: background 0.12s; }
    .tl-col.tl-active .tl-fr { background: var(--tl-panel-dark); }
    .tl-take { font-family: 'Open Sans',sans-serif; font-size: 11px; font-weight: 400; color: rgba(255,255,255,0.85); line-height: 1.35; }
    .tl-col.tl-active .tl-take { color: #fff; font-weight: 500; }
    .tl-here { align-self: flex-start; display: inline-block; font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.1em; color: #fff; background: var(--tl-panel-dark); border-radius: var(--radius-pill); padding: 3px 7px; text-transform: uppercase; }
    .tl-detail { border: 1px solid var(--border); border-top: none; display: grid; grid-template-columns: 1fr 1fr; min-height: 100px; }
    .tl-d-pub { background: var(--white); padding: 18px 20px; border-right: 1px solid var(--border); }
    .tl-d-fraud { background: var(--mono-bg); padding: 18px 20px; }
    .tl-d-label { font-family: 'JetBrains Mono',monospace; font-size: 8px; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 7px; }
    .tl-d-pub .tl-d-label { color: var(--ink-faint); }
    .tl-d-fraud .tl-d-label { color: #fff; }
    .tl-d-title { font-family: 'Open Sans',sans-serif; font-size: 13px; font-weight: 700; letter-spacing: -0.02em; color: var(--ink); margin-bottom: 5px; }
    .tl-d-fraud .tl-d-title { color: #fff; }
    .tl-d-desc { font-size: 16px; line-height: 1.6; color: var(--ink-light); }
    .tl-d-fraud .tl-d-desc { color: #fff; }
    .tl-caption { font-size: 12px; color: var(--ink-faint); text-align: center; margin-top: 10px; line-height: 1.6; max-width: 580px; margin-left: auto; margin-right: auto; }

    /* STAT STRIP */
    .stat-strip { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin: 32px 0; }
    .stat-item { padding: 22px 20px; border-right: 1px solid var(--border); }
    .stat-item:last-child { border-right: none; }
    .stat-num { font-family: 'Open Sans',sans-serif; font-size: 34px; font-weight: 700; color: var(--ink); letter-spacing: -0.03em; line-height: 1; margin-bottom: 8px; }
    .stat-label { font-size: 13px; font-weight: 500; color: var(--ink-mid); margin-bottom: 8px; line-height: 1.5; }
    .stat-src { font-family: 'JetBrains Mono',monospace; font-size: 8px; color: var(--ink-faint); letter-spacing: 0.04em; line-height: 1.6; }
    @media (max-width: 768px) { .stat-strip { grid-template-columns: 1fr; } .stat-item { border-right: none; border-bottom: 1px solid var(--border); } .stat-item:last-child { border-bottom: none; } }

    /* SCROLL REVEAL */
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.5s ease, transform 0.5s ease; }
    .reveal.visible { opacity: 1; transform: none; }

    /* ACCESSIBILITY: keyboard focus states for custom interactive elements */
    .tech-card:focus-visible, .loop-step:focus-visible, .role-card-header:focus-visible,
    .tl-col:focus-visible, .hero-cta:focus-visible, .cta-btn:focus-visible,
    .author-link:focus-visible, .nav-links a:focus-visible {
      outline: 2px solid var(--ink); outline-offset: 2px;
    }
    .tech-card:focus-visible { outline-offset: -2px; }
    .tl-col:focus-visible { outline-offset: -2px; z-index: 3; }

    /* RESPONSIVE */
    @media (max-width: 1024px) {
      .tool-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 900px) {
      .content-section { grid-template-columns: 1fr; gap: 24px; padding: 56px 0; }
      .section-label { position: static; display: flex; align-items: baseline; gap: 12px; }
      .section-num { margin-bottom: 0; }
      .vector-card { grid-template-columns: 1fr; gap: 20px; }
      .evidence { grid-template-columns: 1fr; gap: 20px; }
    }
    @media (max-width: 768px) {
      .nav-links { gap: 16px; }
      .nav-links a { font-size: 12px; }
      .hero { padding: 56px 24px 48px; }
      .hero-badge { flex-wrap: wrap; justify-content: center; }
      .shell { padding: 0 24px; }
      .tech-grid { grid-template-columns: repeat(2,1fr); }
      .tech-panel-inner { grid-template-columns: 1fr; gap: 28px; }
      .defense-grid, .two-col, .vectors-grid { grid-template-columns: 1fr; }
      .about-section { padding: 40px 24px; }
      .author-grid { grid-template-columns: 1fr; }
      footer { padding: 24px; }
      .tl-grid { grid-template-columns: repeat(3,1fr); }
      .tl-top, .tl-fr { padding-left: 8px; padding-right: 8px; }
      .diagram { overflow-x: auto; }
      .diagram svg { min-width: 640px; }
      .table-card { overflow-x: auto; }
      .axes-table { min-width: 480px; }
      .pl-arrow { display: none; }
    }
    @media (max-width: 640px) {
      .nav-links { display: none; }
    }
    @media (max-width: 560px) {
      .tl-grid { grid-template-columns: repeat(2,1fr); }
      .tech-grid { grid-template-columns: 1fr; }
      .evidence-media.evidence-trio { grid-template-columns: 1fr 1fr; }
      .stat-num { font-size: 28px; }
      .hero-badge-item { font-size: 9px; padding: 6px 10px; }
    }