:root{
  --ground:#F2F5F6;
  --surface:#FFFFFF;
  --ink:#02284A;
  --ink-2:#4E5F70;
  --line:#CFD8DF;
  --line-soft:#E2E8ED;
  --grid:rgba(2,40,74,.055);
  --accent:#1F5C99;
  --inv-ground:#02284A;
  --inv-ink:#EEF2F5;
  --inv-ink-2:#9FB3C6;
  --inv-line:#194169;
  --inv-grid:rgba(255,255,255,.045);
  --logo-filter:none;

  --serif:"Libre Caslon Display",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --wrap:1140px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ground:#0C1620;
    --surface:#101C27;
    --ink:#E9EEF3;
    --ink-2:#9AAABA;
    --line:#22333F;
    --line-soft:#1A2933;
    --grid:rgba(233,238,243,.04);
    --accent:#7FB3E0;
    --inv-ground:#050E17;
    --inv-ink:#E9EEF3;
    --inv-ink-2:#8FA5B8;
    --inv-line:#1C3A57;
    --inv-grid:rgba(255,255,255,.035);
    --logo-filter:brightness(0) invert(1) opacity(.92);
  }
}
:root[data-theme="dark"]{
  --ground:#0C1620;
  --surface:#101C27;
  --ink:#E9EEF3;
  --ink-2:#9AAABA;
  --line:#22333F;
  --line-soft:#1A2933;
  --grid:rgba(233,238,243,.04);
  --accent:#7FB3E0;
  --inv-ground:#050E17;
  --inv-ink:#E9EEF3;
  --inv-ink-2:#8FA5B8;
  --inv-line:#1C3A57;
  --inv-grid:rgba(255,255,255,.035);
  --logo-filter:brightness(0) invert(1) opacity(.92);
}

*{box-sizing:border-box}
body{background:var(--ground);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2{font-family:var(--serif);font-weight:400;text-wrap:balance;margin:0;line-height:1.14}
h1{font-size:clamp(2.3rem,5.2vw,3.85rem);letter-spacing:-.012em}
h2{font-size:clamp(1.72rem,3.2vw,2.5rem);letter-spacing:-.008em}
h3{
  font-family:var(--sans);font-weight:600;font-size:1.02rem;line-height:1.34;
  letter-spacing:-.003em;margin:0;text-wrap:balance;color:var(--ink);
}
.band h3{color:var(--inv-ink)}
p{margin:0}
a{color:inherit}
html{scroll-behavior:smooth}
section[id]{scroll-margin-top:84px}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}

.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:24px}
@media(max-width:480px){.wrap{padding-inline:18px}}

.paper{background:var(--ground)}
.sheet{background:var(--surface)}
.gridbg{
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:38px 38px;background-position:center top;
}
.band .gridbg,.band.gridbg{
  background-image:linear-gradient(var(--inv-grid) 1px,transparent 1px),linear-gradient(90deg,var(--inv-grid) 1px,transparent 1px);
}

.eyebrow{font-family:var(--mono);font-size:.69rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);display:flex;align-items:center;gap:.7rem}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--line);flex:none}
.band .eyebrow{color:var(--inv-ink-2)}
.band .eyebrow::before{background:var(--inv-line)}

/* header */
.site-head{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:color-mix(in srgb,var(--ground) 90%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line-soft)}
.head-in{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:70px}
.logo{display:flex;align-items:center}
.logo img{height:31px;width:auto;display:block;filter:var(--logo-filter)}
.nav{display:flex;align-items:center;gap:1.9rem}
.nav a{font-size:.86rem;text-decoration:none;color:var(--ink-2);padding-block:.35rem;border-bottom:1px solid transparent;transition:color .18s,border-color .18s}
.nav a:hover{color:var(--ink);border-bottom-color:var(--ink)}
.btn{display:inline-block;background:var(--ink);color:var(--ground);font-size:.86rem;font-weight:500;padding:.72rem 1.35rem;text-decoration:none;border:1px solid var(--ink);transition:background .18s,color .18s}
.btn:hover{background:transparent;color:var(--ink)}
.btn-lg{padding:.92rem 1.9rem;font-size:.95rem}
@media(max-width:760px){.nav{display:none}}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:3rem;align-items:center;padding-block:clamp(3rem,7vw,5.6rem)}
.hero h1{max-width:16ch}
.hero .lede{margin-top:1.5rem;max-width:48ch;font-size:clamp(1rem,1.5vw,1.16rem);color:var(--ink-2);line-height:1.62}
.hero .cta{margin-top:2.2rem;display:flex;flex-wrap:wrap;gap:1rem;align-items:center}
.hero .cta-note{font-family:var(--mono);font-size:.72rem;letter-spacing:.07em;color:var(--ink-2)}
.hero-art svg{width:100%;height:auto;max-width:400px;margin-inline:auto;display:block;color:var(--ink);overflow:visible}
@media(max-width:900px){
  .hero{grid-template-columns:minmax(0,1fr);gap:2.4rem}
  .hero-art svg{max-width:240px}
}

.sectors-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;flex-wrap:wrap}
.sectors-bar span{font-family:var(--mono);font-size:.73rem;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-2);padding:1rem 2.2rem 1rem 0;flex:1 1 auto;min-width:max-content}

section{border-bottom:1px solid var(--line-soft)}
.sec{padding-block:clamp(3.2rem,6vw,5.4rem)}
.sec-head{display:grid;gap:1.1rem;margin-bottom:3rem}
.sec-head h2{max-width:22ch}
.sec-head .sub{color:var(--ink-2);max-width:58ch}

/* thesis band */
.band{background:var(--inv-ground);color:var(--inv-ink);border-bottom:none}
.band h2{max-width:20ch}
.thesis{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:3.5rem;align-items:center}
@media(max-width:860px){.thesis{grid-template-columns:minmax(0,1fr);gap:2.4rem}}
.thesis-body{margin-top:1.8rem;display:grid;gap:1.3rem;max-width:56ch;color:var(--inv-ink-2);font-size:1.02rem;line-height:1.68}
.thesis-body strong{color:var(--inv-ink);font-weight:500}
.thesis-art svg{width:100%;height:auto;display:block;color:var(--inv-ink);overflow:visible}

/* cash curve */
.curve-fig{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:2.2rem}
.curve-scroll{overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch}
.curve-scroll svg{width:100%;height:auto;display:block;color:var(--ink);overflow:visible}
.scroll-hint{display:none;font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);margin-top:.7rem}
@media(max-width:780px){
  .curve-scroll{padding-block:.4rem}
  .curve-scroll svg{min-width:660px}
  .scroll-hint{display:block}
}
.curve-key{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1.2rem;margin-top:1.5rem}
.curve-key div{font-size:.8rem;line-height:1.45;color:var(--ink-2);border-top:1px solid var(--line-soft);padding-top:.7rem}
.curve-key b{display:block;font-family:var(--mono);font-size:.66rem;letter-spacing:.11em;text-transform:uppercase;color:var(--ink);font-weight:500;margin-bottom:.3rem}
@media(max-width:820px){.curve-key{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:460px){.curve-key{grid-template-columns:minmax(0,1fr)}}
.fig-note{font-family:var(--mono);font-size:.66rem;letter-spacing:.09em;color:var(--ink-2);margin-top:1.3rem;text-transform:uppercase}

/* gain rows with mini-diagrams */
.gains{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 3.5rem}
@media(max-width:820px){.gains{grid-template-columns:minmax(0,1fr)}}
.gain{display:grid;grid-template-columns:76px minmax(0,1fr);gap:1.4rem;padding-block:1.9rem;border-top:1px solid var(--line);align-items:start}
.gain svg{width:76px;height:auto;display:block;color:var(--accent);overflow:visible}
.gain h3{font-size:1.06rem}
.gain p{margin-top:.5rem;color:var(--ink-2);font-size:.9rem;line-height:1.58}
@media(max-width:480px){.gain{grid-template-columns:minmax(0,1fr);gap:1rem}}

/* method */
.steps{display:grid;gap:0}
.step{display:grid;grid-template-columns:auto minmax(0,1.05fr) minmax(0,2fr);gap:1.6rem;padding-block:1.8rem;border-top:1px solid var(--line);align-items:start}
.step .marker{position:relative;width:54px;padding-top:.15rem}
.step .marker .n{font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;color:var(--ink-2)}
.step .marker::after{content:"";position:absolute;left:5px;top:2.05rem;bottom:-1.85rem;width:1px;background:var(--line)}
.step:last-of-type .marker::after{display:none}
.step .marker .dot{width:11px;height:11px;border:1px solid var(--ink);display:block;margin-bottom:.55rem}
.step .marker .dot.fill{background:var(--ink)}
.step .body{color:var(--ink-2);line-height:1.62}
.loopback{display:flex;align-items:center;gap:1rem;border-top:1px solid var(--line);padding-block:1.4rem;color:var(--ink-2);font-size:.88rem}
.loopback svg{width:64px;height:auto;flex:none;color:var(--accent);overflow:visible}
@media(max-width:720px){
  .step{grid-template-columns:auto minmax(0,1fr);gap:.5rem 1rem}
  .step .body{grid-column:2}
}

/* cycle */
.cycle{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:1px solid var(--line)}
.stage{border-right:1px solid var(--line-soft);padding:1.5rem 1.2rem 1.7rem 0}
.stage:last-child{border-right:none}
.stage svg{width:100%;height:auto;max-width:170px;display:block;color:var(--ink);overflow:visible}
.stage .code{font-family:var(--mono);font-size:.69rem;letter-spacing:.1em;color:var(--ink-2);margin-top:1.1rem}
.stage h3{margin-top:.35rem;font-size:1.01rem}
.stage p{margin-top:.5rem;font-size:.86rem;line-height:1.54;color:var(--ink-2)}
@media(max-width:900px){.cycle{grid-template-columns:repeat(2,minmax(0,1fr))}.stage{border-bottom:1px solid var(--line-soft);padding-right:1.2rem}}
@media(max-width:480px){.cycle{grid-template-columns:minmax(0,1fr)}.stage{border-right:none}}

.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 3.5rem}
@media(max-width:820px){.split{grid-template-columns:minmax(0,1fr)}}
.item{padding-block:1.55rem;border-top:1px solid var(--line)}
.item h3{font-size:1.04rem}
.item p{margin-top:.5rem;color:var(--ink-2);font-size:.91rem;line-height:1.6}

/* other sectors, with drawings */
.sector-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 3rem}
@media(max-width:820px){.sector-grid{grid-template-columns:minmax(0,1fr)}}
.sector{border-top:1px solid var(--line);padding-block:1.7rem}
.sector svg{width:100%;height:auto;max-width:260px;display:block;color:var(--ink);overflow:visible;margin-bottom:1.3rem}
.sector h3{font-size:1.06rem}
.sector p{margin-top:.55rem;color:var(--ink-2);font-size:.91rem;line-height:1.6}

/* why */
.why{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2.6rem}
@media(max-width:820px){.why{grid-template-columns:minmax(0,1fr);gap:0}.why-item{padding-block:1.7rem;border-top:1px solid var(--inv-line)}}
.why-item h3{font-size:1.1rem;max-width:20ch;color:var(--inv-ink)}
.why-item p{margin-top:.7rem;color:var(--inv-ink-2);font-size:.92rem;line-height:1.62}
.why-item svg{width:44px;height:auto;display:block;color:var(--accent);margin-bottom:1.15rem;overflow:visible}

/* contact */
.contact-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:3.5rem}
@media(max-width:860px){.contact-grid{grid-template-columns:minmax(0,1fr);gap:2.4rem}}
form{display:grid;gap:1.3rem}
.field-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.3rem}
@media(max-width:520px){.field-row{grid-template-columns:minmax(0,1fr)}}
.field{display:grid;gap:.42rem}
label{font-family:var(--mono);font-size:.67rem;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-2)}
input,select,textarea{font-family:var(--sans);font-size:.95rem;color:var(--ink);background:transparent;border:none;border-bottom:1px solid var(--line);padding:.55rem 0;width:100%;border-radius:0}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,currentColor 50%),linear-gradient(135deg,currentColor 50%,transparent 50%);background-position:calc(100% - 9px) 55%,calc(100% - 4px) 55%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:1.6rem}
select option{background:var(--surface);color:var(--ink)}
textarea{resize:vertical;min-height:84px}
input:focus,select:focus,textarea:focus{outline:none;border-bottom-color:var(--accent);box-shadow:0 1px 0 0 var(--accent)}
.form-note{font-size:.8rem;color:var(--ink-2);line-height:1.55}

footer{background:var(--inv-ground);color:var(--inv-ink-2);border-bottom:none}
.foot-in{padding-block:3rem 2.2rem;display:flex;flex-wrap:wrap;gap:2rem 3rem;align-items:flex-start;justify-content:space-between}
footer .logo img{filter:brightness(0) invert(1) opacity(.9);height:29px}
.foot-col{display:grid;gap:.45rem;font-size:.87rem}
.foot-col a{color:var(--inv-ink-2);text-decoration:none}
.foot-col a:hover{color:var(--inv-ink)}
.foot-base{border-top:1px solid var(--inv-line);padding-block:1.3rem;font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;color:var(--inv-ink-2);display:flex;flex-wrap:wrap;gap:.8rem 2rem;justify-content:space-between}

.hidden-note{font-family:var(--mono);font-size:.69rem;letter-spacing:.07em;color:var(--ink-2);border:1px dashed var(--line);padding:.9rem 1rem;margin-top:2.5rem}

/* ---------- movimento ---------- */
html.anim [data-reveal]{opacity:0;transform:translateY(16px)}
html.anim [data-reveal].in{
  opacity:1;transform:none;
  transition:opacity .72s cubic-bezier(.22,.61,.28,1) var(--d,0s),transform .72s cubic-bezier(.22,.61,.28,1) var(--d,0s);
}
.stage:nth-child(2),.gain:nth-child(2),.sector:nth-child(2),.why-item:nth-child(2),.step:nth-child(2){--d:.07s}
.stage:nth-child(3),.gain:nth-child(3),.sector:nth-child(3),.why-item:nth-child(3),.step:nth-child(3){--d:.14s}
.stage:nth-child(4),.gain:nth-child(4),.step:nth-child(4){--d:.21s}
.stage:nth-child(5){--d:.28s}
.curve-line{transition:stroke-dashoffset 1.6s cubic-bezier(.32,.5,.2,1) .12s}
.curve-mark{opacity:0;transition:opacity .5s ease 1.25s}
.curve-mark.on{opacity:1}

.site-head{transition:border-color .25s,box-shadow .25s}
.site-head.scrolled{border-bottom-color:var(--line);box-shadow:0 1px 14px rgba(2,40,74,.07)}
.stage,.sector,.gain,.item{transition:opacity .25s}
.stage svg,.sector svg,.gain svg{transition:transform .4s cubic-bezier(.22,.61,.28,1),opacity .25s}
.stage:hover svg,.sector:hover svg{transform:translateY(-3px)}
.btn{transition:background .2s,color .2s,transform .2s}
.btn:active{transform:translateY(1px)}

/* ---------- menu mobile ---------- */
.menu-btn{display:none;background:none;border:1px solid var(--line);padding:.55rem .6rem;cursor:pointer;color:var(--ink);line-height:0}
.menu-btn svg{width:18px;height:18px;display:block}
.mobile-nav{display:none;border-top:1px solid var(--line-soft);background:var(--ground)}
.mobile-nav a{display:block;padding:.85rem 0;text-decoration:none;color:var(--ink);font-size:.95rem;border-bottom:1px solid var(--line-soft)}
.mobile-nav a:last-child{border-bottom:none}
@media(max-width:760px){
  .menu-btn{display:inline-flex}
  .mobile-nav:not([hidden]){display:block}
  .head-in .btn{display:none}
}

@media (prefers-reduced-motion: reduce){
  *{transition:none!important;animation:none!important}
  html.anim [data-reveal]{opacity:1!important;transform:none!important}
  .curve-mark{opacity:1}
}

/* ---------- blog ---------- */
.post-link{display:block;text-decoration:none;transition:opacity .2s}
.post-link:hover{opacity:.72}
.post-date{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);margin-bottom:.45rem}
.post{max-width:none}
.post-title{font-family:var(--serif);font-weight:400;font-size:clamp(1.9rem,4vw,3rem);line-height:1.14;letter-spacing:-.01em;max-width:20ch;margin-top:1.2rem}
.post-resumo{margin-top:1.2rem;font-size:1.1rem;line-height:1.6;color:var(--ink-2);max-width:56ch}
.post-body{margin-top:2.6rem;max-width:68ch;border-top:1px solid var(--line);padding-top:2.2rem}
.post-body h2{font-size:clamp(1.35rem,2.4vw,1.8rem);margin-top:2.4rem}
.post-body h3{margin-top:2rem}
.post-body p{margin-top:1.15rem;line-height:1.72}
.post-body ul,.post-body ol{margin-top:1.15rem;padding-left:1.3rem;line-height:1.72}
.post-body li{margin-top:.4rem}
.post-body blockquote{margin:1.7rem 0;padding-left:1.3rem;border-left:2px solid var(--accent);color:var(--ink-2);font-style:normal}
.post-body a{color:var(--accent)}
.post-body img{display:block;margin:2rem 0;width:100%;height:auto}
.post-back{margin-top:3rem;border-top:1px solid var(--line);padding-top:1.5rem;font-size:.9rem}
.post-back a{text-decoration:none;color:var(--ink-2)}
.post-back a:hover{color:var(--ink)}

/* honeypot antispam — invisível para pessoas */
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;pointer-events:none}
.form-msg{flex:1 1 220px;font-size:.88rem;color:var(--accent);font-weight:500}