/* ═══════════════════════════════════════════════════════════
   Aegis — navy, ruled, corporate.
   Source Serif 4 for headings, Inter for everything else.
   ═══════════════════════════════════════════════════════════ */
:root{
  --navy:#0A1020; --panel:#111A2E; --panel-2:#16213A; --panel-3:#1B2743;
  --ink:#EEF2F9; --soft:#C5D0E3; --muted:#8F9CB7; --dim:#63708B;
  --blue:#5B8DEF; --blue-lt:#8FB4F7; --blue-dp:#2E5AAC; --blue-deep:#1B3A73;
  --rule:rgba(150,175,225,.20); --hair:rgba(150,175,225,.09);
  --edge:rgba(255,255,255,.055);
  --serif:"Source Serif 4",ui-serif,Georgia,"Times New Roman",serif;
  --sans:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --wrap:1180px; --pad:clamp(1.15rem,4vw,3rem); --marg:10.5rem;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px);
}
*,*::before,*::after{box-sizing:inherit}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:4.6rem}
body{
  margin:0;background:var(--navy);color:var(--soft);
  font-family:var(--sans);font-size:clamp(.96rem,.93rem + .16vw,1.02rem);line-height:1.68;
  letter-spacing:-.003em;-webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative;
}
/* depth: engineering grid plus a cool wash from the top right */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(70% 55% at 82% -5%, rgba(91,141,239,.16), transparent 68%),
    radial-gradient(50% 40% at 0% 100%, rgba(46,90,172,.10), transparent 70%),
    repeating-linear-gradient(0deg, rgba(150,175,225,.035) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(90deg, rgba(150,175,225,.035) 0 1px, transparent 1px 88px);
}
img,svg{max-width:100%}
a{color:var(--blue-lt);text-underline-offset:3px;text-decoration-thickness:1px}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
::selection{background:rgba(91,141,239,.32)}

.wrap{width:min(100% - (var(--pad)*2),var(--wrap));margin-inline:auto;position:relative;z-index:1}
.skip{position:absolute;left:-9999px;background:var(--blue);color:#06101F;padding:.6rem 1rem;z-index:99;font-weight:600}
.skip:focus{left:.5rem;top:.5rem}

/* ── type ─────────────────────────────────────────────────── */
h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:-.015em;margin:0;color:var(--ink)}
h1{font-size:clamp(2.15rem,1.45rem + 3vw,3.4rem);line-height:1.1}
h2{font-size:clamp(1.55rem,1.2rem + 1.65vw,2.25rem);line-height:1.16}
h3{font-size:1.08rem;line-height:1.35;font-weight:600;letter-spacing:-.008em}
em,.em{font-style:normal;color:var(--blue-lt)}
.lede{font-size:clamp(1.03rem,.98rem + .4vw,1.16rem);line-height:1.6;color:var(--soft);max-width:56ch}
p{margin:0 0 1rem}
.label{font-size:.68rem;font-weight:600;letter-spacing:.17em;text-transform:uppercase;color:var(--dim);
  margin:0;display:flex;align-items:center;gap:.55rem}
.label::before{content:"";width:14px;height:2px;background:var(--blue);flex:0 0 auto}
.label.plain::before{display:none}
.label b{color:var(--blue);font-weight:600}
.note{font-size:.76rem;color:var(--dim)}
.num{font-variant-numeric:tabular-nums lining-nums}
.small{font-size:.9rem;color:var(--muted)}

/* ── header ───────────────────────────────────────────────── */
header{position:sticky;top:0;z-index:30;background:rgba(10,16,32,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hair)}
header::before{content:"";position:absolute;inset:0 0 auto;height:3px;
  background:linear-gradient(90deg,var(--blue-deep),var(--blue) 45%,var(--blue-deep))}
.bar{display:flex;align-items:center;gap:1rem;padding:.8rem 0}
.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none;color:var(--ink)}
.brand svg{width:22px;height:26px;display:block;flex:0 0 auto}
.brand .wm{font-family:var(--serif);font-weight:600;font-size:1.08rem;letter-spacing:.17em;text-transform:uppercase;line-height:1}
.brand .sub{display:none;font-size:.58rem;font-weight:600;letter-spacing:.21em;text-transform:uppercase;color:var(--dim);margin-top:.25rem}
@media(min-width:560px){.brand .sub{display:block}}
nav{display:none;gap:1.5rem;margin-left:auto;font-size:.87rem;font-weight:500}
nav a{color:var(--muted);text-decoration:none;padding-bottom:3px;border-bottom:2px solid transparent}
nav a:hover{color:var(--ink)}
nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--blue)}
.bar .cta{margin-left:auto}
@media(min-width:940px){nav{display:flex}.bar .cta{margin-left:1.5rem}}

/* ── buttons ──────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-weight:600;font-size:.88rem;
  padding:.72rem 1.3rem;border-radius:2px;text-decoration:none;border:1px solid transparent;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease}
.btn-blue{background:var(--blue);color:#06101F;box-shadow:0 1px 0 rgba(255,255,255,.22) inset}
.btn-blue:hover{background:var(--blue-lt);transform:translateY(-1px)}
.btn-line{border-color:var(--rule);color:var(--ink)}
.btn-line:hover{border-color:var(--blue);color:var(--blue-lt)}
.btn-sm{padding:.5rem 1rem;font-size:.83rem}
.arrow{color:var(--blue-lt);text-decoration:none;font-weight:600;font-size:.88rem;
  display:inline-flex;gap:.45rem;align-items:center;border-bottom:1px solid var(--rule);padding-bottom:.2rem}
.arrow:hover{border-bottom-color:var(--blue)}

/* ── layout ───────────────────────────────────────────────── */
section{padding:clamp(3rem,6.5vw,5.2rem) 0;position:relative}
.ruled{border-top:1px solid var(--hair)}
.marg{display:grid;gap:.6rem 2.5rem}
@media(min-width:1000px){.marg{grid-template-columns:var(--marg) 1fr;gap:0 3.2rem}}
.marg > .side{padding-top:.4rem}
.head h2{max-width:22ch;margin-bottom:1rem}
.head .lede{max-width:56ch}

/* watermark shield behind a section */
.crested{position:relative;overflow:hidden}
.crested::after{
  content:"";position:absolute;right:-3%;top:50%;transform:translateY(-50%);
  width:min(400px,42vw);aspect-ratio:24/28;pointer-events:none;opacity:.055;
  background:var(--blue-lt);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 28'%3E%3Cpath d='M12 1.5 22.2 5.2v8.3c0 6.1-4.4 10.6-10.2 12.9C6.2 24.1 1.8 19.6 1.8 13.5V5.2Z' fill='none' stroke='%23000' stroke-width='1.2'/%3E%3Cpath d='M6.8 15.2 12 10.4l5.2 4.8' fill='none' stroke='%23000' stroke-width='1.3'/%3E%3C/svg%3E") center/contain no-repeat;
          mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 28'%3E%3Cpath d='M12 1.5 22.2 5.2v8.3c0 6.1-4.4 10.6-10.2 12.9C6.2 24.1 1.8 19.6 1.8 13.5V5.2Z' fill='none' stroke='%23000' stroke-width='1.2'/%3E%3Cpath d='M6.8 15.2 12 10.4l5.2 4.8' fill='none' stroke='%23000' stroke-width='1.3'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* ── hero ─────────────────────────────────────────────────── */
.hero{padding-top:clamp(2.4rem,5.5vw,4rem);padding-bottom:clamp(2rem,4vw,3rem)}
.hero-grid{display:grid;gap:clamp(2.2rem,5vw,3.4rem);align-items:center}
@media(min-width:980px){.hero-grid{grid-template-columns:1.08fr .92fr}}
.kicker{display:flex;align-items:center;gap:.9rem;margin-bottom:clamp(1.3rem,3vw,1.9rem)}
.kicker::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,var(--rule),transparent)}
.hero h1{margin-bottom:1.3rem;max-width:17ch}
.cta-row{display:flex;flex-wrap:wrap;gap:1.2rem;align-items:center;margin-top:1.9rem}

/* fact ribbon */
.ribbon{display:grid;gap:1px;background:var(--hair);border-block:1px solid var(--hair)}
@media(min-width:720px){.ribbon{grid-template-columns:repeat(5,1fr)}}
.ribbon div{background:rgba(17,26,46,.72);padding:.95rem clamp(.9rem,2vw,1.3rem)}
.ribbon dt{font-size:.62rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);margin-bottom:.35rem}
.ribbon dd{margin:0;font-family:var(--serif);font-size:1.02rem;color:var(--ink)}

/* ── panels ───────────────────────────────────────────────── */
.crest,.case,.callout,.chart-card{
  position:relative;border:1px solid var(--rule);border-radius:3px;
  background:linear-gradient(180deg,var(--panel-2),var(--panel) 55%,rgba(10,16,32,.9));
  box-shadow:0 1px 0 var(--edge) inset, 0 14px 34px -22px rgba(0,0,0,.9);
}
.crest{padding:clamp(1.3rem,3vw,1.8rem)}
.chart-card{padding:clamp(1.2rem,2.8vw,1.7rem)}
.bracket::before,.bracket::after{content:"";position:absolute;width:13px;height:13px;pointer-events:none}
.bracket::before{top:-1px;left:-1px;border-top:2px solid var(--blue);border-left:2px solid var(--blue)}
.bracket::after{bottom:-1px;right:-1px;border-bottom:2px solid var(--blue);border-right:2px solid var(--blue)}

.crest .label{margin-bottom:1.1rem}
.crest dl{margin:0}
.crest dl div{display:flex;justify-content:space-between;gap:1rem;align-items:baseline;
  padding:.7rem 0;border-bottom:1px solid var(--hair)}
.crest dl div:last-child{border-bottom:0}
.crest dt{font-size:.84rem;color:var(--muted)}
.crest dd{margin:0;font-family:var(--serif);font-size:1.02rem;color:var(--ink);text-align:right}

.chart-card .cap{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;margin-bottom:1rem}
.chart-card .cap b{font-size:.68rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.chart-card .cap span{font-size:.72rem;color:var(--dim)}
.chart-card figcaption{margin:.9rem 0 0;padding-top:.85rem;border-top:1px solid var(--hair);
  font-size:.82rem;color:var(--muted)}

/* ── figures ──────────────────────────────────────────────── */
.figs{display:grid;gap:1px;background:var(--hair);border:1px solid var(--hair);border-radius:3px;overflow:hidden;
  box-shadow:0 14px 34px -24px rgba(0,0,0,.9)}
@media(min-width:680px){.figs{grid-template-columns:repeat(4,1fr)}}
.figs div{background:linear-gradient(180deg,var(--panel-2),var(--panel));padding:clamp(1.1rem,2.6vw,1.6rem);position:relative}
.figs div::before{content:"";position:absolute;top:0;left:0;width:36px;height:2px;background:var(--blue)}
.figs b{display:block;margin-top:.5rem;font-family:var(--serif);font-size:clamp(1.55rem,1.2rem + 1.4vw,2.05rem);
  line-height:1;color:var(--blue-lt);letter-spacing:-.025em}
.figs span{display:block;margin-top:.55rem;font-size:.83rem;color:var(--muted);line-height:1.5}

/* ── cards ────────────────────────────────────────────────── */
.cols{display:grid;gap:1px;background:var(--hair);border:1px solid var(--hair);border-radius:3px;overflow:hidden}
@media(min-width:820px){.cols{grid-template-columns:repeat(3,1fr)}}
.cols.two{grid-template-columns:1fr}
@media(min-width:820px){.cols.two{grid-template-columns:repeat(2,1fr)}}
.cols article{background:linear-gradient(180deg,var(--panel-2),var(--panel));padding:clamp(1.3rem,3vw,1.9rem);
  transition:background .2s ease}
.cols article:hover{background:linear-gradient(180deg,var(--panel-3),var(--panel-2))}
.cols .roman{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;
  border:1px solid var(--rule);border-radius:2px;font-size:.72rem;font-weight:600;color:var(--blue);
  font-variant-numeric:tabular-nums;background:rgba(91,141,239,.08)}
.cols h3{margin:.85rem 0 .55rem}
.cols p{margin:0;font-size:.92rem;color:var(--muted)}

/* ── rows ─────────────────────────────────────────────────── */
.rows{border-top:1px solid var(--rule)}
.row{display:grid;gap:.3rem 2rem;padding:1.4rem 0;border-bottom:1px solid var(--hair);align-items:baseline;
  transition:background .2s ease}
.row:hover{background:linear-gradient(90deg,rgba(91,141,239,.05),transparent 60%)}
@media(min-width:820px){.row{grid-template-columns:2.8rem 1fr 1fr}}
.row .r{font-size:.74rem;font-weight:600;color:var(--blue);font-variant-numeric:tabular-nums;letter-spacing:.1em}
.row h3{margin-bottom:.3rem}
.row p{margin:0;font-size:.91rem;color:var(--muted)}
.row ul{margin:0;padding:0;list-style:none;font-size:.89rem;color:var(--muted)}
.row ul li{padding-left:1rem;position:relative;margin-bottom:.22rem}
.row ul li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:1px;background:var(--blue-dp)}

/* ── definition list ──────────────────────────────────────── */
.dl{border-top:1px solid var(--hair)}
.dl div{display:grid;grid-template-columns:1fr;gap:.2rem;padding:.85rem 0;border-bottom:1px solid var(--hair)}
@media(min-width:620px){.dl div{grid-template-columns:10.5rem 1fr;gap:1.4rem}}
.dl dt{font-size:.68rem;font-weight:600;letter-spacing:.15em;text-transform:uppercase;color:var(--blue-lt);padding-top:.3rem}
.dl dd{margin:0;font-size:.92rem;color:var(--muted)}

/* ── case studies ─────────────────────────────────────────── */
.case{padding:clamp(1.3rem,3vw,1.9rem)}
.case + .case{margin-top:1rem}
.case .tag{font-size:.66rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);margin-bottom:.7rem}
.case h3{margin-bottom:.6rem;font-size:1.15rem}
.case p{margin:0 0 .7rem;font-size:.92rem;color:var(--muted)}
.case .result{font-family:var(--serif);font-size:1rem;color:var(--ink);border-top:1px solid var(--hair);
  padding-top:.8rem;margin:.2rem 0 0}

/* metrics inside a case */
.metrics{display:grid;gap:1rem;margin:1.1rem 0 .3rem;padding:1rem 0;border-block:1px solid var(--hair)}
@media(min-width:640px){.metrics{grid-template-columns:repeat(2,1fr);gap:1.4rem}}
.metric b{display:flex;justify-content:space-between;align-items:baseline;font-size:.66rem;font-weight:600;
  letter-spacing:.13em;text-transform:uppercase;color:var(--muted);margin-bottom:.5rem}
.metric b i{font-style:normal;font-family:var(--serif);font-size:1.05rem;color:var(--blue-lt);letter-spacing:0}
.meter{height:6px;background:rgba(150,175,225,.12);border-radius:1px;overflow:hidden}
.meter span{display:block;height:100%;background:linear-gradient(90deg,var(--blue-dp),var(--blue));border-radius:1px}
.segs{display:flex;gap:4px}
.segs i{flex:1;height:6px;border-radius:1px;background:rgba(150,175,225,.12)}
.segs i.on{background:var(--blue)}

/* ── process flow ─────────────────────────────────────────── */
.flow{display:grid;gap:1px;background:var(--hair);border:1px solid var(--hair);border-radius:3px;overflow:hidden}
@media(min-width:760px){.flow{grid-template-columns:repeat(4,1fr)}}
.flow .step{background:linear-gradient(180deg,var(--panel-2),var(--panel));padding:1.25rem clamp(1rem,2.2vw,1.4rem);position:relative}
.flow .step .n{font-size:.64rem;font-weight:600;letter-spacing:.16em;color:var(--blue);margin-bottom:.6rem;
  display:flex;align-items:center;gap:.5rem}
.flow .step .n::after{content:"";height:1px;flex:1;background:var(--hair)}
.flow .step h3{font-size:1rem;margin-bottom:.4rem}
.flow .step p{margin:0;font-size:.86rem;color:var(--muted)}
@media(min-width:760px){
  .flow .step:not(:last-child)::after{content:"";position:absolute;right:-7px;top:50%;width:12px;height:12px;
    transform:translateY(-50%) rotate(45deg);background:var(--panel);border-top:1px solid var(--hair);
    border-right:1px solid var(--hair);z-index:2}
}

/* ── split / callout / chips ──────────────────────────────── */
.split{display:grid;gap:clamp(1.8rem,4vw,3rem)}
@media(min-width:900px){.split{grid-template-columns:1fr 1fr;align-items:start}}
.callout{border-left:3px solid var(--blue);padding:clamp(1.1rem,2.5vw,1.5rem);margin:1.6rem 0}
.callout p:last-child{margin-bottom:0}
.callout p{font-size:.93rem;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.3rem}
.chip{font-size:.78rem;font-weight:500;color:var(--soft);
  border:1px solid var(--rule);border-radius:2px;padding:.42rem .8rem;
  background:linear-gradient(180deg,var(--panel-2),var(--panel));transition:border-color .18s ease,color .18s ease}
.chip:hover{border-color:var(--blue);color:var(--ink)}

/* ── faq ──────────────────────────────────────────────────── */
details{border-bottom:1px solid var(--hair);padding:1.1rem 0}
details:first-of-type{border-top:1px solid var(--hair)}
summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1.5rem;align-items:baseline;
  font-family:var(--serif);font-size:1.06rem;font-weight:600;color:var(--ink)}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--blue);font-size:1.05rem;line-height:1;font-weight:500}
details[open] summary::after{content:"–"}
details p{margin:.7rem 0 0;color:var(--muted);max-width:66ch;font-size:.93rem}

/* ── prose ────────────────────────────────────────────────── */
.prose{max-width:66ch}
.prose h2{font-size:clamp(1.35rem,1.1rem + 1.1vw,1.8rem);margin:2.4rem 0 .8rem}
.prose p{margin:0 0 1rem;color:var(--soft)}
.prose ul{margin:0 0 1.1rem;padding-left:1.3rem;color:var(--muted)}
.prose li{margin-bottom:.4rem}
.prose li::marker{color:var(--blue-dp)}
.prose strong{color:var(--ink);font-weight:600}

/* ── page hero ────────────────────────────────────────────── */
.phero{padding:clamp(2.3rem,5vw,3.6rem) 0 clamp(1.5rem,3vw,2.2rem);position:relative}
.phero h1{max-width:22ch}
.phero .lede{margin-top:1.2rem}
.crumb{font-size:.68rem;font-weight:600;letter-spacing:.15em;text-transform:uppercase;color:var(--dim);margin-bottom:1.1rem}
.crumb a{color:var(--dim);text-decoration:none}
.crumb a:hover{color:var(--blue-lt)}

/* ── close ────────────────────────────────────────────────── */
.close{border-top:2px solid var(--blue);padding-top:clamp(1.8rem,4vw,2.6rem)}
.close h2{max-width:18ch}

/* ── onward ───────────────────────────────────────────────── */
.onward{display:grid;gap:1px;background:var(--hair);border-top:1px solid var(--hair)}
@media(min-width:760px){.onward{grid-template-columns:repeat(3,1fr)}}
.onward a{background:var(--navy);padding:1.5rem clamp(1rem,2vw,1.3rem);text-decoration:none;display:block;
  transition:background .2s ease}
.onward a:hover{background:var(--panel)}
.onward span{display:block;font-size:.64rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);margin-bottom:.4rem}
.onward b{font-family:var(--serif);font-weight:600;font-size:1.02rem;color:var(--ink)}

/* ── footer ───────────────────────────────────────────────── */
footer{border-top:1px solid var(--hair);padding:clamp(2.2rem,5vw,3.2rem) 0 2.6rem;color:var(--muted);font-size:.86rem;
  background:linear-gradient(180deg,rgba(17,26,46,.5),transparent 60%);position:relative;z-index:1}
.foot{display:grid;gap:2rem}
@media(min-width:820px){.foot{grid-template-columns:1.6fr 1fr 1fr}}
footer h4{font-size:.66rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);margin:0 0 .85rem}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:.45rem}
footer a{color:var(--muted);text-decoration:none}
footer a:hover{color:var(--ink)}
.legal{margin-top:2.4rem;padding-top:1.2rem;border-top:1px solid var(--hair);font-size:.75rem;color:var(--dim);
  display:flex;flex-wrap:wrap;gap:.4rem 1.5rem}

/* ── motion ───────────────────────────────────────────────── */
.rise{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease}
.rise.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rise{opacity:1;transform:none;transition:none}
  .btn:hover{transform:none}
}

.center-block{text-align:center;padding:clamp(4rem,12vw,9rem) 0}
.center-block .lede{margin-inline:auto}
.center-block .label{justify-content:center}


/* ── hero chart text ──────────────────────────────────────── */
.chart-card svg{display:block;width:100%;height:auto}
.chart-card .ax{font-family:var(--sans);font-size:8.5px;font-weight:600;letter-spacing:.14em;fill:var(--dim)}
.chart-card .mk{font-family:var(--sans);font-size:9px;font-weight:500;fill:var(--dim)}
.chart-card .mk.on{fill:var(--blue-lt);font-weight:600}