:root{
    --bg:#F5F5F2;            /* paper */
    --surface:#FFFFFF;
    --ink:#11181C;           /* primary text */
    --ink-2:#3C474E;         /* secondary */
    --ink-3:#6E787F;         /* muted */
    --line:rgba(17,24,28,0.13);
    --line-soft:rgba(17,24,28,0.07);
    --accent:#0F4C3A;        /* deep institutional green */
    --accent-2:#0B3A2C;
    --accent-soft:rgba(15,76,58,0.06);
    --display:'Newsreader',Georgia,serif;
    --sans:'Inter',-apple-system,sans-serif;
    --mono:'IBM Plex Mono',monospace;
    --maxw:1200px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-weight:400;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
  a{color:inherit;text-decoration:none}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 40px}
  @media(max-width:640px){.wrap{padding:0 24px}}

  .eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:22px}
  .eyebrow .idx{color:var(--ink-3);margin-right:10px}
  h1,h2,h3{font-family:var(--display);font-weight:400;letter-spacing:-0.01em;color:var(--ink)}
  .lead{color:var(--ink-2);font-size:18px;max-width:40em}

  /* reveal */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
  .reveal.in{opacity:1;transform:none}

  /* buttons */
  .btn{font-family:var(--sans);font-weight:500;font-size:14.5px;padding:13px 22px;border-radius:2px;cursor:pointer;display:inline-flex;align-items:center;gap:10px;transition:all .2s ease;border:1px solid transparent}
  .btn-primary{background:var(--accent);color:#fff}
  .btn-primary:hover{background:var(--accent-2)}
  .btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
  .btn-ghost:hover{border-color:var(--ink);background:rgba(17,24,28,0.02)}
  .btn .arr{font-family:var(--mono);transition:transform .2s ease}
  .btn:hover .arr{transform:translateX(3px)}

  /* nav */
  nav{position:fixed;top:0;left:0;right:0;z-index:80;background:rgba(245,245,242,0.82);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .3s ease,background .3s ease}
  nav.scrolled{border-bottom-color:var(--line);background:rgba(245,245,242,0.94)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px}
  .brand{display:flex;align-items:center;gap:11px;font-weight:600;font-size:18px;letter-spacing:.04em}
  .brand .logo-img{height:48px;width:auto;flex:none;display:block}
  .nav-links{display:flex;align-items:center;gap:34px;font-size:14px;color:var(--ink-2)}
  .nav-links a:not(.btn):hover{color:var(--ink)}
  .nav-links .btn{padding:10px 18px}
  @media(max-width:820px){.nav-links a:not(.btn){display:none}}

  /* hero */
  .hero{padding:150px 0 90px}
  .hero-grid{display:grid;grid-template-columns:1.02fr 0.98fr;gap:64px;align-items:center}
  .hero h1{font-size:clamp(40px,5vw,60px);line-height:1.08;margin-bottom:26px}
  .hero h1 em{font-style:italic;color:var(--accent)}
  .hero .lead{margin-bottom:36px}
  .hero-cta{display:flex;gap:14px;flex-wrap:wrap}
  @media(max-width:920px){.hero-grid{grid-template-columns:1fr;gap:48px}.hero{padding:120px 0 70px}}

  /* hero pipeline viz */
  .viz-card{background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:30px 28px;box-shadow:0 1px 0 rgba(17,24,28,0.02),0 24px 60px -40px rgba(17,24,28,0.25)}
  .viz-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}
  .viz-head .t{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
  .viz-head .s{font-family:var(--mono);font-size:11px;color:var(--accent)}
  .viz-sub{font-size:13px;color:var(--ink-3);margin-bottom:20px}
  .pipeline{width:100%;height:auto;display:block}
  .scan-rect{animation:scan 6s linear infinite}
  @keyframes scan{0%{transform:translateX(0)}100%{transform:translateX(420px)}}
  .marker{animation:mk 6s ease-in-out infinite}
  .marker.m2{animation-delay:1.2s}.marker.m3{animation-delay:2.4s}.marker.m4{animation-delay:3.6s}
  @keyframes mk{0%,40%,100%{opacity:.25;r:3.2}48%,60%{opacity:1;r:5}}
  .viz-legend{display:flex;gap:20px;margin-top:18px;font-family:var(--mono);font-size:10.5px;color:var(--ink-3);letter-spacing:.04em}
  .viz-legend span{display:inline-flex;align-items:center;gap:7px}
  .viz-legend i{width:8px;height:8px;display:inline-block}
  .viz-legend .i1{background:var(--ink);opacity:.3}.viz-legend .i2{background:var(--accent)}

  /* sections */
  section.block{padding:118px 0;border-top:1px solid var(--line)}
  .block.alt{background:var(--surface)}
  .sec-head{max-width:46em;margin-bottom:64px}
  .sec-head h2{font-size:clamp(28px,3.4vw,40px);line-height:1.14;margin-bottom:20px}
  .sec-head .lead{font-size:17px}
  @media(max-width:640px){section.block{padding:84px 0}.sec-head{margin-bottom:44px}}

  /* leakage list (sec 1) */
  .lk-list{border-top:1px solid var(--line)}
  .lk-row{display:grid;grid-template-columns:54px 1fr 1.3fr;gap:24px;padding:26px 4px;border-bottom:1px solid var(--line-soft);align-items:baseline}
  .lk-row .n{font-family:var(--mono);font-size:13px;color:var(--accent)}
  .lk-row h3{font-family:var(--display);font-size:21px}
  .lk-row p{color:var(--ink-2);font-size:15px}
  @media(max-width:720px){.lk-row{grid-template-columns:40px 1fr;gap:14px}.lk-row p{grid-column:2}}

  /* how it works (sec 2) */
  .steps3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
  .step3{background:var(--surface);padding:38px 32px}
  .step3 .k{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--ink-3);text-transform:uppercase;margin-bottom:28px}
  .step3 .k b{color:var(--accent);font-weight:500}
  .step3 h3{font-family:var(--display);font-size:24px;margin-bottom:14px}
  .step3 p{color:var(--ink-2);font-size:15px}
  .note-strip{margin-top:30px;padding:20px 24px;border-left:2px solid var(--accent);background:var(--accent-soft);font-size:15px;color:var(--ink-2)}
  .note-strip b{color:var(--ink);font-weight:600}
  @media(max-width:820px){.steps3{grid-template-columns:1fr}}

  /* framework cards (sec 3) */
  .fw-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
  .fw-card{background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:26px 26px;cursor:pointer;transition:border-color .25s ease,box-shadow .25s ease}
  .fw-card:hover{border-color:var(--ink-3);box-shadow:0 18px 50px -36px rgba(17,24,28,0.4)}
  .fw-card .top{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}
  .fw-card .idx{font-family:var(--mono);font-size:12px;color:var(--accent)}
  .fw-card h3{font-family:var(--display);font-size:21px;margin:14px 0 0}
  .fw-card .toggle{font-family:var(--mono);font-size:18px;color:var(--ink-3);transition:transform .3s ease;line-height:1}
  .fw-card.open .toggle{transform:rotate(45deg)}
  .fw-body{max-height:0;overflow:hidden;transition:max-height .4s ease,margin .4s ease;margin-top:0}
  .fw-card.open .fw-body{max-height:340px;margin-top:20px}
  .fw-body .row{padding-top:16px;border-top:1px solid var(--line-soft)}
  .fw-body .row:first-child{padding-top:0;border-top:none}
  .fw-body .lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-bottom:6px}
  .fw-body p{font-size:14.5px;color:var(--ink-2);margin-bottom:16px}
  @media(max-width:720px){.fw-grid{grid-template-columns:1fr}}

  /* why missed (sec 4) */
  .why-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px 64px}
  .why-item{padding-top:22px;border-top:1px solid var(--line)}
  .why-item h3{font-family:var(--display);font-size:20px;margin-bottom:8px}
  .why-item p{color:var(--ink-2);font-size:15px}
  @media(max-width:720px){.why-grid{grid-template-columns:1fr;gap:30px}}

  /* methodology (sec 5) */
  .method{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
  .method .m{padding:0 18px 0 0;position:relative}
  .method .m .dot{width:13px;height:13px;border-radius:50%;background:var(--surface);border:2px solid var(--accent);position:relative;z-index:2;margin-bottom:22px}
  .method .m::before{content:"";position:absolute;top:5.5px;left:6px;right:0;height:1px;background:var(--line);z-index:1}
  .method .m:last-child::before{display:none}
  .method .m .k{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;color:var(--accent);text-transform:uppercase;margin-bottom:10px}
  .method .m h3{font-family:var(--display);font-size:19px;margin-bottom:10px}
  .method .m p{font-size:13.5px;color:var(--ink-2);padding-right:14px}
  @media(max-width:820px){.method{grid-template-columns:1fr;gap:0}.method .m{padding:0 0 30px 28px}.method .m .dot{position:absolute;left:0;top:2px;margin:0}.method .m::before{top:14px;left:6px;width:1px;height:100%;right:auto}}

  /* technology (sec 6) */
  .tech-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:56px;align-items:center}
  .tech-list{list-style:none}
  .tech-list li{padding:18px 0;border-bottom:1px solid var(--line-soft);display:flex;gap:16px}
  .tech-list li:first-child{border-top:1px solid var(--line)}
  .tech-list .mk{font-family:var(--mono);font-size:12px;color:var(--accent);flex:none;width:26px}
  .tech-list b{font-weight:600;color:var(--ink)}
  .tech-list span{color:var(--ink-2);font-size:15px}
  /* findings workflow illustrative panel */
  .work-card{background:var(--surface);border:1px solid var(--line);border-radius:3px;overflow:hidden}
  .work-card .wh{padding:16px 20px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);display:flex;justify-content:space-between}
  .work-row{display:grid;grid-template-columns:1fr auto;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line-soft);align-items:center}
  .work-row:last-child{border-bottom:none}
  .work-row .wt{font-size:14px}
  .work-row .wt small{display:block;font-family:var(--mono);font-size:11px;color:var(--ink-3);margin-top:3px}
  .pill{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;padding:5px 10px;border-radius:2px;white-space:nowrap}
  .pill.flag{background:rgba(154,107,47,0.12);color:#8a5f29}
  .pill.review{background:rgba(17,24,28,0.06);color:var(--ink-2)}
  .pill.valid{background:var(--accent-soft);color:var(--accent)}
  .illus-note{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);margin-top:12px;text-align:right}
  @media(max-width:820px){.tech-grid{grid-template-columns:1fr;gap:40px}}

  /* security (sec 7) */
  .sec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
  .sec-card{padding:30px 28px;border:1px solid var(--line);border-radius:3px;background:var(--surface)}
  .sec-card .mk{font-family:var(--mono);font-size:12px;color:var(--accent);margin-bottom:18px}
  .sec-card h3{font-family:var(--display);font-size:20px;margin-bottom:10px}
  .sec-card p{color:var(--ink-2);font-size:14.5px}
  @media(max-width:720px){.sec-grid{grid-template-columns:1fr}}

  /* faq (sec 8) */
  .faq{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{width:100%;text-align:left;background:none;border:none;cursor:pointer;padding:26px 4px;display:flex;justify-content:space-between;align-items:center;gap:20px;font-family:var(--display);font-size:20px;color:var(--ink)}
  .faq-q .pm{font-family:var(--mono);font-size:18px;color:var(--accent);transition:transform .3s ease;flex:none}
  .faq-item.open .faq-q .pm{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
  .faq-item.open .faq-a{max-height:260px}
  .faq-a p{padding:0 4px 26px;color:var(--ink-2);font-size:15.5px;max-width:54em}

  /* final cta (sec 9) */
  .cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
  .cta-grid h2{font-size:clamp(30px,3.6vw,42px);line-height:1.12;margin-bottom:20px}
  .cta-grid .lead{margin-bottom:0}
  .assess{background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:34px}
  .fld{margin-bottom:18px}
  .fld label{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-bottom:8px}
  .fld input,.fld textarea{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:2px;padding:12px 14px;color:var(--ink);font-family:var(--sans);font-size:15px;transition:border-color .2s ease}
  .fld input:focus,.fld textarea:focus{outline:none;border-color:var(--accent)}
  .fld textarea{resize:vertical;min-height:80px}
  .assess .btn-primary{width:100%;justify-content:center;padding:14px}
  .assess .fine{font-family:var(--mono);font-size:11px;color:var(--ink-3);margin-top:14px;text-align:center}
  .ok{display:none;margin-top:14px;padding:12px;border-radius:2px;background:var(--accent-soft);border:1px solid rgba(15,76,58,.25);color:var(--accent);font-size:13.5px;text-align:center}
  .err{display:none;margin-top:14px;padding:12px;border-radius:2px;background:#fff0f0;border:1px solid rgba(180,0,0,.2);color:#a00;font-size:13.5px;text-align:center}
  @media(max-width:820px){.cta-grid{grid-template-columns:1fr;gap:40px}}

  footer{border-top:1px solid var(--line);padding:48px 0;color:var(--ink-3);font-size:13.5px}
  .foot-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px}
  .foot-inner .brand{color:var(--ink)}

  @media(prefers-reduced-motion:reduce){
    *{animation:none!important}
    .reveal{opacity:1;transform:none;transition:none}
  }