:root{
  --kc-black:#000000;
  --kc-light:#efefef;
}

html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:#111}

.kc-header{
  position:fixed;z-index:50;top:0;left:0;right:0;height:78px;padding:0 28px;
  display:grid;grid-template-columns:auto 1fr auto;gap:28px;align-items:center;
  background:rgba(8,8,8,.94);color:#fff;backdrop-filter:blur(10px);
}
.kc-header nav{
  display:flex;justify-content:center;gap:28px;font-size:.75rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.1em;
}
.kc-header nav a:hover,.kc-header nav a[aria-current="page"]{color:var(--acid)}
.kc-brand img{width:170px;display:block}

/* Knowledge Center landing */
.kc-hub-hero,
.kc-subhero{
  padding:190px 28px 100px;
  background:#0a0a0a;
  color:#fff;
}

/* Knowledge Center landing hero image */
.kc-hub-hero{
  position:relative;
  overflow:hidden;
}

.kc-hub-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(
      90deg,
      rgba(0,0,0,.88) 0%,
      rgba(0,0,0,.62) 55%,
      rgba(0,0,0,.28) 100%
    ),
    url("/images/knowledge/knowledge-center-hero.png");
  background-size:cover;
  background-position:center;
  z-index:0;
}

.kc-hub-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(
      to top,
      rgba(0,0,0,.55),
      transparent 55%
    );
  z-index:0;
}

.kc-hub-hero-inner,
.kc-subhero-inner{
  width:min(1180px,100%);
  margin:auto;
}

.kc-hub-hero-inner{
  position:relative;
  z-index:1;
}
.kc-hub-hero h1,.kc-subhero h1{
  max-width:11ch;margin:0;font-size:clamp(4.5rem,9vw,9rem);
  line-height:.83;letter-spacing:-.06em;text-transform:uppercase;
}
.kc-hub-hero-inner>p:not(.eyebrow),
.kc-subhero-inner>p:not(.eyebrow){
  max-width:760px;margin:34px 0 0;font-size:clamp(1.05rem,1.5vw,1.35rem);
  line-height:1.6;color:#d7d7d2;
}
.kc-path-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
.kc-path-card{
  min-height:520px;padding:34px;display:flex;flex-direction:column;justify-content:space-between;
  border-right:1px solid #bdbdbd;border-bottom:1px solid #bdbdbd;
}
.kc-path-card.dark{background:#000;color:#fff}
.kc-path-card.light{background:#efefef;color:#000}
.kc-path-index{color:var(--acid);font-size:.75rem;font-weight:700;letter-spacing:.1em}
.kc-path-card h2{
  max-width:9ch;margin:0 0 18px;font-size:clamp(3rem,5vw,5.4rem);
  line-height:.88;letter-spacing:-.05em;text-transform:uppercase;
}
.kc-path-card p{max-width:560px;margin:0;font-size:1.08rem;line-height:1.6}
.kc-path-card strong{
  margin-top:34px;font-size:.72rem;text-transform:uppercase;letter-spacing:.1em
}

/* Capabilities */
.kc-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px}
.kc-meta span{
  padding:10px 13px;border:1px solid rgba(255,255,255,.24);
  font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase
}
.kc-jump{
  position:sticky;z-index:20;top:78px;background:#fff;border-bottom:1px solid #cfcfcf
}
.kc-jump-inner{
  width:min(1180px,calc(100% - 56px));margin:auto;display:flex;overflow-x:auto
}
.kc-jump a{
  flex:0 0 auto;padding:16px 19px;border-right:1px solid #d6d6d6;
  font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap
}
.kc-jump a:first-child{border-left:1px solid #d6d6d6}
.kc-jump a:hover{background:var(--acid)}
.kc-jump a span{margin-right:8px;color:#697800}

.kc-theme{scroll-margin-top:135px}
.kc-theme-heading{
  width:min(1180px,calc(100% - 56px));margin:auto;padding:92px 0 46px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:end
}
.kc-theme-heading h2{
  margin:0;max-width:12ch;font-size:clamp(3rem,6vw,6.3rem);
  line-height:.88;letter-spacing:-.05em;text-transform:uppercase
}
.kc-theme-heading>p{max-width:520px;margin:0;font-size:1.05rem;line-height:1.6}

.kc-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));background:#111
}
.kc-card{
  min-width:0;min-height:310px;margin:0;border:0;
  border-right:1px solid rgba(255,255,255,.18);border-bottom:1px solid rgba(255,255,255,.18);
  background:var(--kc-black);color:#fff
}
/* Explicit 4-column checkerboard */
.kc-card:nth-child(8n + 2),
.kc-card:nth-child(8n + 4),
.kc-card:nth-child(8n + 5),
.kc-card:nth-child(8n + 7){
  background:var(--kc-light);color:#000;border-color:#c9c9c9
}
.kc-card summary{
  position:relative;min-height:310px;padding:25px;display:flex;flex-direction:column;
  cursor:pointer;list-style:none
}
.kc-card summary::-webkit-details-marker{display:none}
.kc-index{color:var(--acid);font-size:.72rem;font-weight:700;letter-spacing:.1em}
.kc-card h3{
  max-width:12ch;margin:auto 0 0;padding-right:38px;
  font-size:clamp(1.55rem,2.2vw,2.35rem);line-height:.95;
  letter-spacing:-.025em;text-transform:uppercase
}
.kc-toggle{
  position:absolute;right:24px;bottom:22px;font-size:2rem;font-weight:300;
  line-height:1;transition:transform .2s ease
}
.kc-card[open] .kc-toggle{transform:rotate(45deg)}
.kc-expanded{padding:0 25px 26px}
.kc-expanded>p{
  margin:0;padding-top:22px;border-top:1px solid currentColor;
  font-size:1rem;line-height:1.6;opacity:.88
}
.kc-helps{margin-top:28px;padding-top:18px;border-top:1px solid currentColor}
.kc-helps span{
  color:#778800;font-size:.68rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase
}
.kc-card:not(:nth-child(8n + 2)):not(:nth-child(8n + 4)):not(:nth-child(8n + 5)):not(:nth-child(8n + 7)) .kc-helps span{
  color:var(--acid)
}
.kc-helps p{margin:8px 0 0;font-size:.95rem;line-height:1.55}
.kc-card[open]{min-height:450px}

/* Long reads placeholder */
.kc-article-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr))
}
.kc-article-card{
  min-height:420px;padding:34px;display:flex;flex-direction:column;
  border-right:1px solid #bdbdbd;border-bottom:1px solid #bdbdbd
}
.kc-article-card.dark{background:#000;color:#fff}
.kc-article-card.light{background:#efefef;color:#000}
.kc-article-card h2{
  max-width:15ch;margin:20px 0;font-size:clamp(2.5rem,4vw,4.3rem);
  line-height:.92;letter-spacing:-.04em;text-transform:uppercase
}
.kc-article-card>p:not(.eyebrow){max-width:620px;line-height:1.6}
.kc-placeholder-label{
  margin-top:auto;padding-top:30px;font-size:.68rem;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase
}

.kc-cta{
  padding:85px max(28px,calc((100vw - 1180px)/2));
  display:grid;grid-template-columns:1fr 1fr;gap:70px;background:var(--acid)
}
.kc-cta h2{
  max-width:10ch;margin:0;font-size:clamp(3rem,5.6vw,5.8rem);
  line-height:.88;letter-spacing:-.05em;text-transform:uppercase
}
.kc-cta>div:last-child{align-self:end}
.kc-cta>div:last-child>p{
  max-width:540px;margin:0 0 26px;font-size:1.08rem;line-height:1.6
}

.kc-footer{padding:52px 28px;background:#0a0a0a;color:#fff}
.kc-footer-inner{
  width:min(1180px,100%);margin:auto;display:flex;
  justify-content:space-between;align-items:center;gap:40px
}
.kc-footer nav{
  display:flex;flex-wrap:wrap;justify-content:flex-end;gap:28px;
  font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase
}
.kc-footer nav a:hover{color:var(--acid)}

@media(max-width:1100px){
  .kc-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .kc-card{background:#000;color:#fff}
  .kc-card:nth-child(4n + 2),
  .kc-card:nth-child(4n + 3){
    background:#efefef;color:#000;border-color:#c9c9c9
  }
  .kc-card:nth-child(4n + 2) .kc-helps span,
  .kc-card:nth-child(4n + 3) .kc-helps span{color:#778800}
}

@media(max-width:900px){
  .kc-header{grid-template-columns:1fr auto}
  .kc-header nav{display:none}
  .kc-theme-heading{grid-template-columns:1fr;gap:24px}
  .kc-theme-heading h2{max-width:none}
  .kc-path-grid,.kc-article-grid,.kc-cta{grid-template-columns:1fr}
  .kc-path-card{min-height:420px}
  .kc-cta{gap:35px}
}

@media(max-width:580px){
  .kc-header{padding:0 14px}
  .kc-header .button{padding:11px 12px;font-size:.62rem}
  .kc-brand img{width:145px}
  .kc-hub-hero,.kc-subhero{padding:155px 17px 72px}
  .kc-hub-hero h1,.kc-subhero h1{font-size:3.7rem}
  .kc-jump{top:78px}
  .kc-jump-inner{width:100%}
  .kc-theme-heading{width:calc(100% - 34px);padding:70px 0 34px}
  .kc-grid{grid-template-columns:1fr}
  .kc-card,.kc-card:nth-child(n){background:#000;color:#fff}
  .kc-card:nth-child(even){background:#efefef;color:#000}
  .kc-card summary{min-height:235px}
  .kc-card{min-height:235px}
  .kc-card[open]{min-height:390px}
  .kc-path-card,.kc-article-card{padding:26px}
  .kc-footer{padding:38px 17px}
  .kc-footer-inner{flex-direction:column;align-items:flex-start;gap:28px}
  .kc-footer nav{justify-content:flex-start}
}

/* Knowledge Center footer: reset global footer grid and center both elements. */
footer.kc-footer {
  display:block;
  width:100%;
  box-sizing:border-box;
  padding:52px 28px;
}
.kc-footer .kc-footer-inner {
  width:min(1180px,100%);
  margin:0 auto;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  text-align:center;
  gap:24px;
}
.kc-footer .kc-brand {display:block;flex:none}
.kc-footer .kc-footer-inner nav {
  display:flex;
  justify-content:center;
  align-items:center;
  gap:16px 28px;
  flex-wrap:wrap;
  width:100%;
}
/* Long reads: clean editorial card grid without dividers or alternating backgrounds. */
.kc-article-grid {
  background:#f4f2ed;
  padding:clamp(38px,5vw,78px) max(22px,calc((100vw - 1180px)/2));
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:52px 32px;
}
.kc-article-grid .kc-article-card,
.kc-article-grid .kc-article-card.dark,
.kc-article-grid .kc-article-card.light {
  min-width:0;
  min-height:300px;
  padding:0;
  background:transparent;
  color:#111;
  border:0;
  text-decoration:none;
}
.kc-article-grid .kc-article-card .kc-path-index {color:#718000}
.kc-article-grid .kc-article-card h2 {
  max-width:none;
  font-size:clamp(1.75rem,2.5vw,2.6rem);
  line-height:1;
  margin:18px 0 16px;
}
.kc-article-grid .kc-article-card > p:not(.eyebrow) {
  color:#333;
  font-size:.96rem;
  line-height:1.55;
}
.kc-article-grid .kc-article-card .kc-read-more {
  margin-top:auto;
  padding-top:24px;
  color:#657600;
  font-size:.72rem;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.08em;
}
.kc-article-grid .kc-article-card:hover h2 {text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:5px}
@media(max-width:900px){.kc-article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:580px){.kc-article-grid{grid-template-columns:1fr;gap:38px}}