.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  border-bottom: 1px solid rgba(214,161,75,.11);
  background: rgba(6,22,16,.82);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 28px rgba(0,0,0,.08);
  transition: background .38s ease, border-color .38s ease, backdrop-filter .38s ease, box-shadow .38s ease;
}
.site-header.is-scrolled {
  border-color: rgba(214,161,75,.17);
  background: rgba(6,22,16,.95);
  backdrop-filter: blur(22px);
  box-shadow: 0 12px 34px rgba(0,0,0,.16);
}
.nav {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  padding-inline: clamp(0rem, .7vw, .6rem);
  transition: min-height .38s ease;
}
.site-header.is-scrolled .nav { min-height: 74px; }
.lockup {
  display: inline-flex;
  align-items: flex-start;
  gap: .85rem;
  text-decoration: none;
}
.lockup img {
  width: 46px;
  height: 46px;
  margin-top: -.38rem;
  object-fit: contain;
  filter: drop-shadow(0 4px 5px rgba(0,0,0,.2));
}
.lockup-copy { display: grid; line-height: 1.08; }
.lockup-copy strong {
  font-family: var(--font-display);
  font-size: .85rem;
  letter-spacing: .15em;
}
.lockup-copy > span {
  margin-top: .34rem;
  color: var(--stone-300);
  font-size: .66rem;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.lockup-copy .lockup-philosophy {
  margin-top: .58rem;
  color: rgba(238,241,236,.72);
  font-size: .69rem;
  font-weight: 400;
  letter-spacing: .105em;
}
.lockup-copy .lockup-descriptor {
  margin-top: .3rem;
  color: rgba(200,210,202,.7);
  font-size: .62rem;
  font-weight: 400;
  letter-spacing: .11em;
}
.lockup-descriptor[data-tandem-equation] {
  display: inline-flex;
  align-items: center;
  gap: .42rem;
  white-space: nowrap;
}
.equation-human { color: rgba(238,241,236,.78); }
.equation-times {
  color: rgba(226,185,111,.9);
  transform-origin: center;
}
.equation-tools { color: rgba(200,210,202,.68); }
.lockup-descriptor.is-sequenced .equation-human { animation: equation-human .85s ease both; }
.lockup-descriptor.is-sequenced .equation-times { animation: equation-pass 1.05s ease .28s both; }
.lockup-descriptor.is-sequenced .equation-tools { animation: equation-tools .85s ease .72s both; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}
.nav-links a {
  color: #d7e0d9;
  font-size: .9rem;
  text-decoration: none;
}
.nav-links a:hover { color: var(--gold-400); }
.nav-links .button-primary,
.nav-links .button-primary:hover,
.nav-links .button-primary:focus-visible {
  color: var(--forest-950);
  font-weight: 600;
}

@keyframes equation-human {
  0% { opacity: .55; }
  45% { opacity: 1; color: var(--ivory-100); }
  100% { opacity: 1; }
}
@keyframes equation-pass {
  0% { opacity: .5; transform: scale(.88); text-shadow: 0 0 0 rgba(214,161,75,0); }
  55% { opacity: 1; transform: scale(1.06); text-shadow: 0 0 10px rgba(214,161,75,.24); }
  100% { opacity: 1; transform: scale(1); text-shadow: 0 0 0 rgba(214,161,75,0); }
}
@keyframes equation-tools {
  0% { opacity: .45; }
  55% { opacity: .95; }
  100% { opacity: 1; }
}

.nav-toggle {
  display: none;
  min-width: 48px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: .55rem .8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ivory-100);
  background: rgba(255,255,255,.025);
}
.nav-toggle span {
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.nav-toggle i,
.nav-toggle i::before,
.nav-toggle i::after {
  width: 17px;
  height: 1px;
  display: block;
  background: var(--gold-400);
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle i { position: relative; }
.nav-toggle i::before,
.nav-toggle i::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle i::before { top: -5px; }
.nav-toggle i::after { top: 5px; }
.nav-toggle[aria-expanded="true"] i { background: transparent; }
.nav-toggle[aria-expanded="true"] i::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] i::after { top: 0; transform: rotate(-45deg); }

.section {
  position: relative;
  padding-block: clamp(5rem, 10vw, 9rem);
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: clamp(2.5rem, 5vw, 5rem);
  margin-bottom: clamp(3rem, 5vw, 4.5rem);
}
.section-heading > :first-child { max-width: 760px; }
.section-heading > p {
  max-width: 520px;
  color: var(--stone-200);
  font-size: clamp(1.04rem, 1.3vw, 1.18rem);
  line-height: 1.72;
  letter-spacing: -.008em;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: clamp(1rem, 1.5vw, 1.35rem);
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 1rem;
}

.site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--line-soft);
  color: var(--stone-300);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: end;
}

.footer-mounted-lockup {
  display: inline-flex;
  align-items: center;
  gap: .85rem;
}
.footer-mounted-lockup img {
  width: 54px;
  height: 54px;
  object-fit: contain;
  filter: drop-shadow(0 7px 9px rgba(0,0,0,.24));
}

@media (max-width: 900px) {
  .nav { position: relative; min-height: 78px; }
  .site-header.is-scrolled .nav { min-height: 70px; }
  .nav-links { flex-wrap: wrap; justify-content: flex-end; }
  .js .nav-toggle { display: inline-flex; }
  .js .nav-links {
    position: absolute;
    top: calc(100% - 4px);
    right: 0;
    width: min(320px, calc(100vw - 2rem));
    display: grid;
    gap: .25rem;
    padding: .8rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(6,16,12,.98);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity .22s ease, visibility .22s ease, transform .22s ease;
  }
  .js .nav-links.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }
  .js .nav-links a:not(.button) {
    display: block;
    padding: .75rem .8rem;
    border-radius: 10px;
  }
  .js .nav-links a:not(.button):hover { background: rgba(255,255,255,.035); }
  .js .nav-links .button { margin-top: .35rem; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 1.5rem; }
  .grid-3,.grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .container { width: min(calc(100% - 1.2rem), var(--container)); }
  .nav { min-height: 76px; gap: .75rem; padding-inline: 0; }
  .site-header.is-scrolled .nav { min-height: 68px; }
  .lockup { gap: .6rem; }
  .lockup img { width: 40px; height: 40px; }
  .lockup-copy strong { font-size: .7rem; }
  .lockup-copy .lockup-philosophy {
    margin-top: .48rem;
    font-size: .58rem;
    letter-spacing: .1em;
  }
  .lockup-copy .lockup-descriptor {
    margin-top: .24rem;
    font-size: .56rem;
    letter-spacing: .085em;
  }
  .lockup-descriptor[data-tandem-equation] { gap: .22rem; }
  .footer-inner { display: block; }
}