/* =========================================================
   Vaultt Holdings — Monochrome Institutional
   BlackRock × Apple. Pure black, white, grey. No accent.
   ========================================================= */

:root {
  /* Palette */
  --bg:        #FFFFFF;
  --bg-alt:    #F5F5F7;     /* Apple's signature soft grey */
  --bg-soft:   #FAFAFC;
  --bg-dark:   #000000;
  --bg-mid:    #1D1D1F;
  --ink:       #1D1D1F;     /* primary text */
  --ink-2:     #2B2B2E;
  --grey:      #6E6E73;     /* secondary text */
  --grey-2:    #86868B;     /* tertiary */
  --grey-3:    #A1A1A6;
  --hair:      #D2D2D7;     /* hairline rule */
  --hair-soft: #E8E8ED;

  /* Type */
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, monospace;

  /* Layout */
  --max: 1280px;
  --gutter: clamp(20px, 4vw, 56px);
  --section-y: clamp(96px, 12vw, 180px);

  /* Motion */
  --ease: cubic-bezier(.2,.6,.2,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
html, body { background: var(--bg); }

body {
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.5;
  font-weight: 400;
  letter-spacing: -0.012em;
  font-feature-settings: "ss01","cv11";
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: var(--ink); color: var(--bg); }

/* =========================================================
   Type scale — Apple-grade
   ========================================================= */

.display, h1, h2, h3, h4 {
  font-family: var(--sans);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1.0;
  color: var(--ink);
}

.display-xl { font-weight: 200; font-size: clamp(56px, 11vw, 168px); letter-spacing: -0.05em; line-height: 0.95; }
.display-l  { font-weight: 250; font-size: clamp(48px, 8vw, 120px);  letter-spacing: -0.045em; line-height: 0.96; }
.display-m  { font-weight: 300; font-size: clamp(36px, 5.5vw, 80px); letter-spacing: -0.035em; line-height: 1.0; }
.display-s  { font-weight: 400; font-size: clamp(26px, 3.2vw, 44px); letter-spacing: -0.025em; line-height: 1.1; }

.eyebrow {
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--grey);
}

.eyebrow-num {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--grey);
}

.lede {
  font-weight: 350;
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.32;
  letter-spacing: -0.018em;
  color: var(--ink);
}

p { color: var(--grey); max-width: 64ch; }
p + p { margin-top: 1em; }
strong { font-weight: 500; color: var(--ink); }

/* =========================================================
   Layout
   ========================================================= */

.container { max-width: var(--max); margin: 0 auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); position: relative; }
.section.tight { padding-block: clamp(64px, 8vw, 120px); }
.bg-alt { background: var(--bg-alt); }
.bg-dark { background: var(--bg-dark); color: var(--bg); }
.rule { height: 1px; background: var(--hair); border: 0; }

/* =========================================================
   Header
   ========================================================= */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.site-header.scrolled { border-bottom-color: var(--hair-soft); }

.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}

.brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 500;
  font-size: 17px;
  letter-spacing: -0.022em;
  color: var(--ink);
}
.brand .mark {
  width: 22px; height: 22px;
  background: var(--ink);
  border-radius: 4px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--bg); font-size: 12px; font-weight: 600; letter-spacing: 0;
}
.brand .sub {
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--grey-2); font-weight: 500; margin-left: 4px;
}

.nav-links {
  display: flex; gap: 32px; list-style: none;
}
.nav-links a {
  font-size: 13.5px; font-weight: 450; color: var(--grey);
  position: relative; padding-block: 6px;
  letter-spacing: -0.005em;
  transition: color .18s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }

.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; font-weight: 500;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--ink); color: var(--bg);
  transition: background .18s var(--ease);
}
.nav-cta:hover { background: #000; }

.nav-toggle {
  display: none; width: 36px; height: 36px;
  border: 1px solid var(--hair); border-radius: 999px;
  align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 14px; height: 1.5px; background: var(--ink);
  position: relative;
}
.nav-toggle span::before { content: ""; position: absolute; top: -5px; left: 0; right: 0; }
.nav-toggle span::after  { content: ""; position: absolute; top:  5px; left: 0; right: 0; }

@media (max-width: 880px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; left: 0; right: 0; top: 64px;
    background: var(--bg);
    padding: 16px var(--gutter) 28px;
    border-bottom: 1px solid var(--hair-soft);
  }
  .nav-links.open li { border-top: 1px solid var(--hair-soft); }
  .nav-links.open a { display: block; padding: 16px 0; font-size: 17px; color: var(--ink); }
}

/* =========================================================
   Buttons
   ========================================================= */

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 500;
  letter-spacing: -0.005em;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid var(--ink);
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: #000; }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--bg); }
.btn-light { background: var(--bg); color: var(--ink); border-color: var(--bg); }
.btn-light:hover { background: var(--bg-alt); border-color: var(--bg-alt); }
.btn-outline-light { background: transparent; color: var(--bg); border-color: var(--bg); }
.btn-outline-light:hover { background: var(--bg); color: var(--ink); }
.btn .arrow { transition: transform .2s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

.link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 500;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: color .2s, border-color .2s;
}
.link .arrow { transition: transform .2s var(--ease); }
.link:hover .arrow { transform: translateX(2px); }

/* =========================================================
   Hero
   ========================================================= */

.hero {
  padding-top: clamp(64px, 9vw, 132px);
  padding-bottom: clamp(56px, 8vw, 120px);
}
.hero .top {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 36px;
}
.hero .top .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--ink);
}
.hero h1 {
  font-weight: 250;
  font-size: clamp(54px, 11vw, 168px);
  line-height: 0.94;
  letter-spacing: -0.05em;
  max-width: 13ch;
  color: var(--ink);
}
.hero h1 .em {
  color: var(--grey-2);
  font-weight: 200;
}
.hero .meta {
  margin-top: clamp(40px, 6vw, 72px);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(24px, 5vw, 80px);
  align-items: end;
}
.hero .meta .lede { max-width: 38ch; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }

@media (max-width: 720px) { .hero .meta { grid-template-columns: 1fr; } }

/* =========================================================
   Section header
   ========================================================= */

.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(24px, 5vw, 80px);
  margin-bottom: clamp(48px, 6vw, 80px);
  align-items: start;
}
.section-head .label {
  font-family: var(--mono); font-size: 12px;
  letter-spacing: 0.06em; color: var(--grey);
  padding-top: 14px; border-top: 1px solid var(--ink);
  display: inline-block;
}
.section-head h2 {
  font-weight: 300;
  font-size: clamp(36px, 5.5vw, 80px);
  letter-spacing: -0.04em;
  line-height: 1;
}
.section-head h2 .em { color: var(--grey-2); font-weight: 200; }
.section-head p {
  font-size: 18px; color: var(--grey); max-width: 52ch; margin-top: 24px;
}
@media (max-width: 720px) { .section-head { grid-template-columns: 1fr; } }

/* =========================================================
   Pillars (Portfolio + Home)
   Three priority pillars, each a clean rectangular card
   ========================================================= */

.pillars-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hair);
  border-block: 1px solid var(--hair);
}
.pillars-3 > .pillar {
  background: var(--bg);
  padding: clamp(28px, 3vw, 44px);
  display: flex; flex-direction: column; gap: 18px;
  min-height: 380px;
  position: relative;
  transition: background .25s var(--ease);
}
.pillars-3 > .pillar:hover { background: var(--bg-soft); }

.pillar .stamp {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--mono); font-size: 11.5px;
  color: var(--grey); letter-spacing: 0.05em;
}
.pillar h3 {
  font-weight: 300;
  font-size: clamp(28px, 3vw, 44px);
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin-top: 6px;
  color: var(--ink);
}
.pillar h3 .em { color: var(--grey-2); font-weight: 200; }
.pillar .desc { font-size: 15.5px; color: var(--grey); max-width: 38ch; }
.pillar .tags {
  margin-top: auto;
  display: flex; flex-wrap: wrap; gap: 6px;
  padding-top: 24px;
  border-top: 1px solid var(--hair);
}
.pillar .tag {
  font-size: 11.5px; font-weight: 500;
  padding: 5px 10px;
  border: 1px solid var(--hair);
  border-radius: 999px;
  color: var(--grey);
  background: transparent;
}
.pillar .more {
  font-size: 13.5px; font-weight: 500; color: var(--ink);
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 4px;
}
.pillar .more .arrow { transition: transform .2s var(--ease); }
.pillar:hover .more .arrow { transform: translateX(3px); }

@media (max-width: 880px) { .pillars-3 { grid-template-columns: 1fr; } .pillars-3 > .pillar { min-height: 0; } }

/* Secondary pillar row (single, for Strategic Investments) */
.pillar-secondary {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(24px, 4vw, 64px);
  border-top: 1px solid var(--hair);
  padding-block: clamp(40px, 5vw, 64px);
  align-items: center;
}
.pillar-secondary .label {
  font-family: var(--mono); font-size: 11.5px; color: var(--grey); letter-spacing: 0.06em;
}
.pillar-secondary h4 {
  font-weight: 350; font-size: clamp(22px, 2.6vw, 32px);
  letter-spacing: -0.02em; line-height: 1.15;
  color: var(--ink); margin-top: 8px;
}
.pillar-secondary p { color: var(--grey); margin-top: 10px; }
.pillar-secondary .right {
  display: flex; flex-direction: column; gap: 16px; align-items: flex-start;
}
.pillar-secondary .tags { display: flex; flex-wrap: wrap; gap: 6px; }

@media (max-width: 720px) { .pillar-secondary { grid-template-columns: 1fr; } }

/* =========================================================
   Editorial split (legacy split kept for About / Investments)
   ========================================================= */

.split {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(24px, 5vw, 80px);
  align-items: start;
}
.split .col-l { position: sticky; top: 96px; }
.split .col-l h2 {
  font-weight: 250;
  font-size: clamp(36px, 5.5vw, 76px);
  letter-spacing: -0.04em; line-height: 1;
}
.split .col-l h2 .em { color: var(--grey-2); font-weight: 200; }

.split .col-r { display: grid; gap: 28px; }
.entry {
  border-top: 1px solid var(--hair);
  padding-top: 28px;
  display: grid; gap: 12px;
}
.entry h4 {
  font-weight: 500; font-size: 18px; letter-spacing: -0.012em; color: var(--ink);
}
.entry p { color: var(--grey); font-size: 16.5px; max-width: 60ch; }

@media (max-width: 720px) {
  .split { grid-template-columns: 1fr; }
  .split .col-l { position: static; }
}

/* =========================================================
   Pull quote — bold sans, no italics, very Apple
   ========================================================= */

.pullquote {
  font-weight: 250;
  font-size: clamp(28px, 4.4vw, 60px);
  line-height: 1.1;
  letter-spacing: -0.035em;
  color: var(--ink);
  max-width: 22ch;
}
.pullquote .em { color: var(--grey-2); font-weight: 200; }

/* =========================================================
   Stats — big numerals, subtle labels
   ========================================================= */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--hair);
  border-block: 1px solid var(--hair);
}
.stat { background: var(--bg); padding: 36px 28px; }
.stat .num {
  font-weight: 200;
  font-size: clamp(40px, 5.5vw, 80px);
  letter-spacing: -0.05em; line-height: 1;
  color: var(--ink);
}
.stat .num .em { color: var(--grey-2); }
.stat .label {
  margin-top: 14px;
  font-size: 13px; color: var(--grey);
  letter-spacing: -0.005em;
  max-width: 26ch;
}

@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* =========================================================
   Dark callout — Apple "Designed for X" energy
   ========================================================= */

.band {
  background: var(--bg-dark);
  color: var(--bg);
  padding-block: clamp(96px, 13vw, 180px);
  position: relative;
  overflow: hidden;
}
.band::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(800px 400px at 80% 30%, rgba(255,255,255,0.06), transparent 60%),
    radial-gradient(600px 300px at 10% 90%, rgba(255,255,255,0.04), transparent 60%);
  pointer-events: none;
}
.band .container { position: relative; }
.band .eyebrow { color: rgba(255,255,255,0.55); }
.band h2 {
  font-weight: 250;
  font-size: clamp(40px, 7vw, 112px);
  line-height: 0.97; letter-spacing: -0.045em;
  color: var(--bg);
  max-width: 14ch;
}
.band h2 .em { color: rgba(255,255,255,0.5); font-weight: 200; }
.band p {
  color: rgba(255,255,255,0.7);
  margin-top: 28px; max-width: 56ch; font-size: 17px;
}
.band .actions { margin-top: 36px; display: flex; gap: 12px; flex-wrap: wrap; }

/* =========================================================
   Footer
   ========================================================= */

.site-footer {
  background: var(--bg-dark);
  color: var(--bg);
  padding-block: 80px 32px;
}
.site-footer .container { display: grid; gap: 56px; }

.footer-mark {
  font-weight: 250;
  font-size: clamp(64px, 10vw, 160px);
  line-height: 0.9;
  letter-spacing: -0.06em;
  color: var(--bg);
}
.footer-mark .em { color: rgba(255,255,255,0.45); font-weight: 200; }

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
}
.site-footer h5 {
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: rgba(255,255,255,0.5); font-weight: 500; margin-bottom: 18px;
}
.site-footer ul { list-style: none; display: grid; gap: 12px; }
.site-footer a { color: var(--bg); font-size: 14.5px; opacity: 0.9; transition: opacity .18s; }
.site-footer a:hover { opacity: 1; }
.site-footer .blurb { color: rgba(255,255,255,0.7); font-size: 14px; max-width: 36ch; }

.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: 12.5px;
  color: rgba(255,255,255,0.55);
  letter-spacing: -0.005em;
}

@media (max-width: 880px) { .footer-top { grid-template-columns: 1fr 1fr; } }

/* =========================================================
   Page hero (sub-pages)
   ========================================================= */

.page-hero {
  padding-top: clamp(64px, 8vw, 120px);
  padding-bottom: clamp(56px, 7vw, 100px);
  border-bottom: 1px solid var(--hair);
}
.page-hero .eyebrow { display: inline-block; padding-bottom: 14px; border-bottom: 1px solid var(--ink); }
.page-hero h1 {
  font-weight: 250;
  font-size: clamp(54px, 8.5vw, 132px);
  line-height: 0.96;
  letter-spacing: -0.045em;
  margin-top: 36px;
  max-width: 14ch;
  color: var(--ink);
}
.page-hero h1 .em { color: var(--grey-2); font-weight: 200; }
.page-hero .lede { margin-top: 36px; max-width: 36ch; }

/* =========================================================
   Sector deep-dive (Portfolio page)
   ========================================================= */

.sector {
  padding-block: clamp(80px, 10vw, 140px);
  border-bottom: 1px solid var(--hair);
}
.sector .grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(24px, 5vw, 80px);
  align-items: start;
}
.sector .meta { position: sticky; top: 96px; display: grid; gap: 16px; }
.sector .meta .num { font-family: var(--mono); font-size: 12px; color: var(--grey); letter-spacing: 0.06em; }
.sector .meta h2 {
  font-weight: 250;
  font-size: clamp(40px, 5.5vw, 80px);
  line-height: 1; letter-spacing: -0.045em;
}
.sector .meta h2 .em { color: var(--grey-2); font-weight: 200; }
.sector .meta .label {
  font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey-2);
  padding-top: 16px; border-top: 1px solid var(--hair);
}

.sector .body p.lede { margin-bottom: 28px; }

.sector .focus-list {
  margin-top: 32px;
  border-top: 1px solid var(--hair);
}
.sector .focus-list .row {
  display: grid; grid-template-columns: 60px 1fr 1.6fr; gap: 20px;
  padding: 24px 0; border-bottom: 1px solid var(--hair);
  align-items: baseline;
}
.sector .focus-list .row .n {
  font-family: var(--mono); font-size: 12px; color: var(--grey-2); letter-spacing: 0.05em;
}
.sector .focus-list .row .t {
  font-weight: 500; font-size: 18px; letter-spacing: -0.015em; color: var(--ink);
}
.sector .focus-list .row .d {
  font-size: 15.5px; color: var(--grey);
}
@media (max-width: 720px) {
  .sector .grid { grid-template-columns: 1fr; }
  .sector .meta { position: static; }
  .sector .focus-list .row { grid-template-columns: 40px 1fr; }
  .sector .focus-list .row .d { grid-column: 1 / -1; }
}

/* =========================================================
   Form (Contact)
   ========================================================= */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(24px, 5vw, 80px);
  align-items: start;
}
.contact-grid .info { display: grid; gap: 28px; }
.contact-grid .info .item h5 {
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--grey-2); font-weight: 500;
  padding-bottom: 10px; border-bottom: 1px solid var(--hair); margin-bottom: 12px;
}
.contact-grid .info .item p, .contact-grid .info .item a {
  font-weight: 400; font-size: 19px; letter-spacing: -0.012em; color: var(--ink);
}
.contact-grid .info .item a:hover { color: var(--grey); }

.form { display: grid; gap: 22px; }
.field { display: grid; gap: 8px; }
.field label {
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--grey-2); font-weight: 500;
}
.field input, .field textarea, .field select {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--ink);
  padding: 12px 0;
  font-family: var(--sans); font-size: 17px;
  color: var(--ink); border-radius: 0; outline: none;
  transition: border-color .18s var(--ease);
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--grey); }
.field textarea { resize: vertical; min-height: 120px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
@media (max-width: 540px) { .field-row { grid-template-columns: 1fr; } }

.form-actions { margin-top: 8px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.form-note { font-size: 13px; color: var(--grey-2); max-width: 36ch; }
.form-status { font-size: 13.5px; color: var(--ink); }

@media (max-width: 720px) { .contact-grid { grid-template-columns: 1fr; } }

/* =========================================================
   Reveal on scroll
   ========================================================= */

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* =========================================================
   Utility
   ========================================================= */

.center { text-align: center; }
.mt-s { margin-top: 16px; } .mt-m { margin-top: 32px; } .mt-l { margin-top: 56px; } .mt-xl { margin-top: 80px; }
.muted { color: var(--grey); }
.flex { display: flex; }
.between { justify-content: space-between; }
.wrap { flex-wrap: wrap; }
.gap-s { gap: 12px; } .gap-m { gap: 24px; } .gap-l { gap: 48px; }