/* ============================================================
   privatemarketsportfolio.com — design system
   Ledger palette. Paper is a cool greenbar tint, not warm cream.
   Brass sits close to the book covers' gold but deeper.
   ============================================================ */

:root{
  --ink:#0B1220;
  --ink-2:#131D30;
  --paper:#E9EBE3;
  --paper-2:#F3F4EE;
  --brass:#A9762F;
  --brass-lt:#D8B478;
  --cobalt:#23479C;
  --flag:#8C2F26;
  --grey-1:#5F6875;
  --grey-2:#98A0AC;
  --rule:#CBCFC4;

  --f-display:'Newsreader',Georgia,'Times New Roman',serif;
  --f-sans:'Source Sans 3',system-ui,-apple-system,sans-serif;
  --f-mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;

  --t-12:clamp(.6875rem,.66rem + .12vw,.75rem);
  --t-14:clamp(.8125rem,.79rem + .1vw,.875rem);
  --t-16:clamp(.9375rem,.91rem + .12vw,1.0625rem);
  --t-20:clamp(1.0625rem,1rem + .28vw,1.25rem);
  --t-24:clamp(1.15rem,1.05rem + .42vw,1.45rem);
  --t-32:clamp(1.45rem,1.26rem + .81vw,1.95rem);
  --t-48:clamp(1.9rem,1.5rem + 1.7vw,2.9rem);
  --t-72:clamp(2.35rem,1.35rem + 4.3vw,4.5rem);

  --caps:.08em;
  --gap:clamp(84px,7vw,148px);
  --gap-sm:clamp(60px,4.5vw,92px);

  --settle:cubic-bezier(.16,1,.30,1);
  --exit:cubic-bezier(.55,0,.85,0);
  --ui:cubic-bezier(.33,0,.15,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--paper);color:var(--ink);
  font-family:var(--f-sans);font-size:var(--t-16);line-height:1.62;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}

/* ---- grid + persistent left rule -------------------------- */
.wrap{max-width:1120px;margin:0 auto;padding:0 clamp(20px,4vw,40px);position:relative}
.rule-col{position:relative;padding-left:clamp(0px,3.4vw,44px)}
@media(min-width:900px){
  .rule-col::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;
    background:var(--brass);opacity:.45;
  }
}

.hero .idx{max-width:34ch}
.idx{
  font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:var(--caps);
  text-transform:uppercase;color:var(--brass);font-variant-numeric:tabular-nums;
  display:block;margin-bottom:14px;
}
h1,h2,h3{font-family:var(--f-display);font-weight:500;letter-spacing:-.02em;line-height:1.08}
h2{font-size:var(--t-48);margin-bottom:18px;max-width:19ch}
h3{font-size:var(--t-24);line-height:1.2}
p{max-width:62ch}
.lede{font-size:var(--t-20);color:var(--grey-1);line-height:1.55}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}

section{padding-block:var(--gap)}
#tools,#books{padding-block:calc(var(--gap) * 1.12)}
#more{padding-block:var(--gap-sm)}

[data-ground="ink"]{background:var(--ink);color:var(--paper)}
[data-ground="ink"] h2,[data-ground="ink"] h3{color:var(--paper)}
[data-ground="ink"] .lede,[data-ground="ink"] p{color:#AEB6C2}

/* ---- links + buttons -------------------------------------- */
a{color:inherit}
.lnk{
  text-decoration:none;font-family:var(--f-mono);font-size:var(--t-14);
  letter-spacing:.04em;color:var(--cobalt);
  background-image:linear-gradient(var(--brass),var(--brass));
  background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;
  transition:background-size 240ms var(--ui);padding-bottom:3px;
}
[data-ground="ink"] .lnk{color:var(--brass-lt)}
.lnk:hover,.lnk:focus-visible{background-size:100% 1px}

.btn{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--cobalt);color:#fff;text-decoration:none;
  font-family:var(--f-mono);font-size:var(--t-14);letter-spacing:.05em;
  text-transform:uppercase;padding:15px 24px;border-radius:3px;
  transition:filter 200ms var(--ui);border:0;cursor:pointer;
}
.btn:hover{filter:brightness(1.12)}
.btn-quiet{
  background:transparent;color:var(--ink);border:1px solid var(--rule);
}
[data-ground="ink"] .btn-quiet{color:var(--paper);border-color:rgba(216,180,120,.4)}
.btn-quiet:hover{border-color:var(--brass);filter:none}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;align-items:center}

:where(a,button,input,select,summary,[tabindex]):focus-visible{
  outline:2px solid var(--cobalt);outline-offset:3px;border-radius:2px;
}
[data-ground="ink"] :focus-visible{outline-color:var(--brass-lt)}
.skip{position:absolute;left:-9999px;z-index:99;background:var(--ink);color:var(--paper);padding:14px 20px;font-family:var(--f-mono);font-size:var(--t-14)}
.skip:focus{left:16px;top:16px}

/* ---- nav --------------------------------------------------- */
.nav{
  position:sticky;top:0;z-index:40;
  background:transparent;transition:background 300ms var(--ui),border-color 300ms var(--ui);
  border-bottom:1px solid transparent;
}
.nav.solid{background:rgba(11,18,32,.94);backdrop-filter:blur(10px);border-bottom-color:rgba(169,118,47,.5)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:66px}
.brand{font-family:var(--f-display);font-size:var(--t-20);color:var(--paper);text-decoration:none;letter-spacing:-.01em}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{
  font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:var(--caps);
  text-transform:uppercase;color:#AEB6C2;text-decoration:none;
  background-image:linear-gradient(var(--brass),var(--brass));
  background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;
  transition:background-size 240ms var(--ui),color 240ms var(--ui);padding-bottom:4px;
}
.nav-links a:hover{color:var(--paper);background-size:100% 1px}
.nav .btn{padding:11px 18px;font-size:var(--t-12)}
.burger{display:none;background:none;border:0;color:var(--paper);font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:var(--caps);text-transform:uppercase;padding:10px}
@media(max-width:880px){
  .nav-links{
    position:fixed;inset:0;background:var(--ink);flex-direction:column;
    justify-content:center;gap:8px;transform:translateY(-100%);
    transition:transform 400ms var(--settle);padding:40px;
  }
  .nav-links.open{transform:none}
  .nav-links a{font-family:var(--f-display);font-size:var(--t-32);text-transform:none;letter-spacing:-.02em;color:var(--paper);padding:12px 0}
  .nav-links .btn{margin-top:20px;width:100%;justify-content:center;font-family:var(--f-mono);font-size:var(--t-14)}
  .burger{display:block}
  .nav .btn.desk{display:none}
}

/* ---- hero -------------------------------------------------- */
.hero{position:relative;background:var(--ink);color:var(--paper);min-height:min(92svh,860px);display:flex;align-items:center;padding-block:clamp(80px,12vh,140px);overflow:hidden;margin-top:-66px;padding-top:calc(66px + clamp(80px,12vh,140px))}
#marks{position:absolute;inset:0;width:100%;height:100%;opacity:.85}
.hero .wrap{position:relative;z-index:2}
.hero-copy{max-width:min(660px,58%)}
.hero h1{font-size:var(--t-72);color:var(--paper);max-width:14ch}
.hero h1 .b{color:var(--brass-lt);font-style:italic}
.hero .lede{color:#B6BECA;max-width:44ch;margin-top:22px}
.ln{display:block;overflow:hidden}
.ln > i{display:block;font-style:inherit}
@media(max-width:880px){
  .hero-copy{max-width:100%}
  #marks{opacity:.3}
}

/* ---- proof band -------------------------------------------- */
.proof{background:var(--ink-2);border-block:1px solid rgba(169,118,47,.35);padding-block:34px}
.proof .row{display:flex;flex-wrap:wrap;gap:clamp(24px,5vw,64px);align-items:baseline}
.proof .item{display:flex;flex-direction:column;gap:4px}
.proof b{font-family:var(--f-display);font-size:var(--t-32);color:var(--brass-lt);font-weight:500;font-variant-numeric:tabular-nums}
.proof span{font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:var(--caps);text-transform:uppercase;color:#8B94A2}

/* ---- tools -------------------------------------------------- */
.tools{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px}
@media(max-width:840px){.tools{grid-template-columns:1fr}}
.tool{
  background:var(--paper-2);border:1px solid var(--rule);border-radius:4px;
  padding:28px 26px 24px;display:flex;flex-direction:column;position:relative;
  transition:transform 240ms var(--ui),border-color 240ms var(--ui);
}
.tool::after{content:"";position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--brass);transition:width 300ms var(--ui)}
@media(hover:hover){.tool:hover{transform:translateY(-4px);border-color:var(--brass)}.tool:hover::after{width:100%}}
.tool h3{margin:10px 0 12px}
.tool p{font-size:var(--t-16);color:var(--grey-1);flex:1;max-width:none}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 18px}
.chip{
  font-family:var(--f-mono);font-size:11px;letter-spacing:var(--caps);
  text-transform:uppercase;padding:5px 9px;border-radius:2px;
  border:1px solid var(--rule);color:var(--grey-1);white-space:nowrap;
}
.chip.open{border-color:var(--brass);color:var(--brass)}
.tool .act{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.note{font-size:var(--t-14);color:var(--grey-1);margin-top:16px;border-left:2px solid var(--rule);padding-left:14px;max-width:none}

/* ---- feature: the map --------------------------------------- */
.map-band{padding-block:calc(var(--gap) * .9)}
.map-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:34px}
.map-shell{width:100%;overflow-x:auto}
.map-shell svg{width:100%;min-width:640px;height:auto;display:block}
.map-key{display:flex;gap:22px;flex-wrap:wrap;margin-top:22px;font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:.04em;color:#8B94A2}
.map-key i{width:9px;height:9px;border-radius:50%;display:inline-block;margin-right:7px}
.src{font-size:11px;color:#78818F;margin-top:18px;max-width:78ch;line-height:1.6}

/* ---- books --------------------------------------------------- */
.book{display:grid;grid-template-columns:230px 1fr;gap:clamp(28px,5vw,56px);align-items:start;margin-top:48px}
.book + .book{margin-top:var(--gap-sm)}
@media(max-width:720px){.book{grid-template-columns:1fr}.cover{max-width:220px}}
.cover{
  position:relative;transform-style:preserve-3d;
  transition:transform 700ms var(--settle);
  filter:drop-shadow(0 22px 40px rgba(11,18,32,.30)) drop-shadow(0 4px 8px rgba(11,18,32,.18));
}
.cover img{border-radius:2px 4px 4px 2px;width:100%}
/* spine */
.cover::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:9px;
  background:linear-gradient(90deg,rgba(11,18,32,.34),rgba(11,18,32,.06) 55%,rgba(255,255,255,.28));
  border-radius:2px 0 0 2px;z-index:2;
}
@media(hover:hover){.cover:hover{transform:perspective(1400px) rotateY(-6deg) translateY(-4px)}}
.book .sub{font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:var(--caps);text-transform:uppercase;color:var(--brass);margin:10px 0 14px}
.tag{display:inline-block;font-family:var(--f-mono);font-size:11px;letter-spacing:var(--caps);text-transform:uppercase;border:1px solid var(--brass);color:var(--brass);padding:4px 9px;border-radius:2px;margin-bottom:12px}

/* ---- author + speaking ---------------------------------------- */
.author{display:grid;grid-template-columns:300px 1fr;gap:clamp(28px,5vw,56px);align-items:center}
@media(max-width:760px){.author{grid-template-columns:1fr}.author .portrait{max-width:260px}}
.portrait img{border-radius:4px;background:var(--paper-2);filter:grayscale(1) contrast(1.04) sepia(.14) hue-rotate(178deg);transition:filter 700ms var(--settle)}
@media(hover:hover){.portrait:hover img{filter:none}}

.speak{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:44px}
@media(max-width:760px){.speak{grid-template-columns:1fr}}
.speak figure{margin:0}
.speak figure:nth-child(2){margin-top:clamp(0px,4vw,52px)}
.speak img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:3px;filter:grayscale(1) contrast(1.08) sepia(.18) hue-rotate(182deg);transition:filter 700ms var(--settle)}
@media(hover:hover){.speak figure:hover img{filter:none}}
.speak.is-in img{filter:none}
.speak figcaption{font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:.03em;color:var(--grey-1);padding-top:12px;line-height:1.6}
.speak figcaption b{display:block;color:var(--ink);font-weight:500}

/* ---- closing band ---------------------------------------------- */
.two{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,72px)}
@media(max-width:760px){.two{grid-template-columns:1fr}}
.two h3{margin-bottom:12px}

/* ---- footer ------------------------------------------------------ */
footer{background:var(--ink);color:#8B94A2;padding-block:56px 34px;font-size:var(--t-14)}
.fcols{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-bottom:44px}
@media(max-width:760px){.fcols{grid-template-columns:repeat(2,1fr)}}
.fcols h4{font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:var(--caps);text-transform:uppercase;color:var(--brass);font-weight:400;margin-bottom:14px}
.fcols a{display:block;color:#AEB6C2;text-decoration:none;padding:5px 0;font-size:var(--t-14)}
.fcols a:hover{color:var(--paper)}
.fbot{border-top:1px solid rgba(255,255,255,.09);padding-top:24px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:flex-start}
.fbot .mark{font-family:var(--f-display);font-size:var(--t-20);color:var(--paper)}
.disclaimer{font-size:11px;line-height:1.6;color:#6E7783;max-width:70ch;margin-top:22px}

/* ---- sticky mobile CTA --------------------------------------------- */
.sticky{
  position:fixed;left:0;right:0;bottom:0;z-index:50;display:none;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(11,18,32,.96);backdrop-filter:blur(8px);
  border-top:1px solid rgba(169,118,47,.4);
  transform:translateY(100%);transition:transform 300ms var(--settle);
}
.sticky .btn{width:100%;justify-content:center}
@media(max-width:880px){.sticky{display:block}}
.sticky.up{transform:none}
.sticky.hide{transform:translateY(100%)}

/* ---- reveal ---------------------------------------------------------- */
/* content is visible by default; only hidden when JS is confirmed present.
   if site.js fails to load, the page still renders complete. */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity 560ms var(--settle),transform 560ms var(--settle)}
.js [data-reveal].is-in{opacity:1;transform:none}
@media(max-width:767px){.js [data-reveal]{transform:translateY(12px)}}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important}
  .js [data-reveal]{opacity:1!important;transform:none!important;transition:opacity 200ms linear}
  .cover:hover{transform:none}
  .tool:hover{transform:none}
  .speak img,.portrait img{filter:none}
}

@media print{
  .nav,.sticky,#marks{display:none!important}
  body{background:#fff;color:#000}
}