/* Silent Key Technologies, essay pages. Extends styles.css, adds nothing new to
   the palette: same tokens, same Inter, same rhythm as the product pages. */

.wrap.narrow{max-width:720px}

/* ---------------------------------------------------------------- hub hero */
.e-hero{padding:64px 0 40px;border-bottom:1px solid var(--line);
  background:radial-gradient(900px 380px at 50% -140px,rgba(46,155,255,.10),transparent 70%)}
.e-hero h1{font-size:clamp(32px,5.4vw,50px);font-weight:800;margin:12px 0 18px}
.e-hero .lead{max-width:660px}
.e-hero .lead + .lead{margin-top:12px}
.e-hero .lead strong{color:var(--ink2);font-weight:600}

/* --------------------------------------------------------------- hub cards */
.e-grid-sec{padding:44px 0 76px}
.e-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.e-card{background:var(--card);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;display:flex;flex-direction:column;transition:border-color .16s,transform .16s}
.e-card:hover{border-color:var(--line2);transform:translateY(-2px)}
.e-card-img{aspect-ratio:1200/627;background:var(--bg2);overflow:hidden}
.e-card-img img{width:100%;height:100%;object-fit:cover}
.e-card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.e-card-body h3{font-size:20px;font-weight:700;margin:10px 0 8px;line-height:1.25}
.e-card-body p{color:var(--mut);font-size:14.5px;line-height:1.6;flex:1}
.e-more{margin-top:16px;font-size:13.5px;font-weight:600;color:var(--accent)}
.e-card:hover .e-more{color:var(--accent2)}

/* -------------------------------------------------------------- meta strip */
.e-meta{display:flex;align-items:center;gap:12px;font-size:11.5px;
  letter-spacing:.14em;text-transform:uppercase;font-weight:700}
.e-series{color:var(--accent);background:var(--accent-dim);
  border-radius:999px;padding:4px 11px}
.e-series.gold{color:var(--gold);background:var(--gold-dim)}
.e-read{color:var(--dim);letter-spacing:.1em}

/* ------------------------------------------------------------ essay page */
.essay{padding:52px 0 76px}
.essay h1{font-size:clamp(29px,4.6vw,42px);font-weight:800;margin:14px 0 16px}
.essay .eyebrow{margin-top:20px}
.e-sub{color:var(--mut);font-size:clamp(16px,2.2vw,18.5px);line-height:1.65}
.e-cover{width:100%;border-radius:14px;border:1px solid var(--line);margin:34px 0 8px}

.e-body{margin-top:26px}
.e-body h2{font-size:clamp(21px,3vw,26px);font-weight:700;margin:44px 0 14px;letter-spacing:-.01em}
.e-body h3{font-size:18px;font-weight:700;margin:32px 0 10px;color:var(--ink2)}
.e-body p{color:var(--ink2);font-size:17px;line-height:1.78;margin-bottom:19px}
.e-body p strong{color:var(--ink);font-weight:600}
.e-body a{color:var(--accent);border-bottom:1px solid rgba(46,155,255,.3);word-break:break-word}
.e-body a:hover{border-bottom-color:var(--accent)}
.e-rule{border:0;border-top:1px solid var(--line);margin:40px 0 30px}
/* the sources block that follows the rule sets back and quiets down */
.e-rule ~ p{font-size:14px;color:var(--mut);line-height:1.7;margin-bottom:12px}

.e-foot{display:flex;gap:12px;margin-top:52px;padding-top:30px;border-top:1px solid var(--line)}

@media(max-width:760px){
  .e-grid{grid-template-columns:1fr}
  .e-body p{font-size:16.2px}
  .e-foot{flex-direction:column}
  .e-foot .btn{text-align:center}
}

/* source lists keep their own lines instead of running together */
.e-src{font-size:14px;color:var(--mut);line-height:1.85}
.e-src a{word-break:break-all}