/* ============================================================
   SILENT SHIFT STUDIO — Design System
   AI Systems & Digital Infrastructure
   ============================================================ */

:root{
  /* Locked brand palette */
  --bg:        #0B0B0C;
  --bg-alt:    #141416;
  --bg-elev:   #1B1B1E;
  --text:      #F5F5F7;
  --text-dim:  #8A8A8F;
  --accent:    #FAC44B;
  --accent-dim: rgba(250,196,75,.13);
  --accent-line: rgba(250,196,75,.35);
  --line:      rgba(245,245,247,.09);
  --line-strong: rgba(245,245,247,.16);
  --shadow: 0 30px 80px -30px rgba(0,0,0,.6);

  --font-display: 'Satoshi', 'General Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'General Sans', 'Satoshi', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --container: 1240px;
  --container-narrow: 800px;
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 22px;

  --ease: cubic-bezier(.16,.84,.44,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;cursor:pointer;background:none;border:none;color:inherit;padding:0}
input,textarea,select{font:inherit;color:inherit;background:none;border:none;outline:none}
svg{display:block}

/* Background hex/node grid wash */
body::before{
  content:"";
  position:fixed;inset:0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(245,245,247,.05) 1px, transparent 1px);
  background-size:34px 34px;
  pointer-events:none;
  z-index:0;
  opacity:.55;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, black 0%, transparent 75%);
}

.container{max-width:var(--container);margin:0 auto;padding:0 28px;position:relative;z-index:1}
.container-narrow{max-width:var(--container-narrow);margin:0 auto;padding:0 28px}

/* ---------- Typography ---------- */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:-0.02em;
  line-height:1.08;
  color:var(--text);
}
h1{font-size:clamp(2.6rem,5.6vw,4.6rem);font-weight:700;letter-spacing:-0.03em}
h2{font-size:clamp(2rem,3.6vw,3rem)}
h3{font-size:clamp(1.3rem,2vw,1.7rem);font-weight:600}
h4{font-size:1.05rem;font-weight:600;letter-spacing:-0.01em}
p{color:var(--text-dim);max-width:62ch}
p.lead{font-size:1.2rem;line-height:1.55;color:var(--text)}
strong{color:var(--text);font-weight:600}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
}
.eyebrow::before{
  content:"";width:7px;height:7px;background:var(--accent);
  clip-path:polygon(50% 0%,100% 25%,100% 75%,50% 100%,0% 75%,0% 25%);
  display:inline-block;flex:none;
}
.eyebrow.on-dim{color:var(--text-dim)}
.eyebrow.on-dim::before{background:var(--text-dim)}

.section-head{max-width:680px;margin-bottom:56px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{margin-top:16px}
.section-head p{margin-top:16px}
.section-head.center p{margin-left:auto;margin-right:auto}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:.94rem;
  border-radius:999px;
  border:1px solid transparent;
  white-space:nowrap;
  transition:transform .35s var(--ease), background .25s ease, border-color .25s ease, color .25s ease;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--accent);color:#141416}
.btn-primary:hover{background:#ffd370;transform:translateY(-2px)}
.btn-outline{border-color:var(--line-strong);color:var(--text)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-ghost{color:var(--text-dim)}
.btn-ghost:hover{color:var(--accent)}
.btn svg{width:16px;height:16px;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translate(3px,-3px)}
.btn-block{width:100%;justify-content:center}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:20px 0;
  transition:background .4s ease, border-color .4s ease, padding .4s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(11,11,12,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
  padding:14px 0;
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:24px}

.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:700;font-size:1.05rem;letter-spacing:-0.01em}
.brand .mark{width:30px;height:30px;flex:none}
.brand .mark path{fill:var(--accent)}
.brand small{display:block;font-family:var(--font-mono);font-weight:400;font-size:.6rem;letter-spacing:.12em;color:var(--text-dim);text-transform:uppercase;margin-top:1px}

/* ---------- Header logo (real image, 1000x300 / 10:3 aspect ratio) ---------- */
/* Place your logo PNG at: /assets/img/logo.png (recommended ~1000x300px,
   transparent background, light/gold artwork suited to a dark #0B0B0C
   header). If the file is missing or fails to load, the wordmark+icon
   fallback below is shown automatically at the same footprint. */
.header-logo{display:flex;align-items:center;flex:none}
.logo-box{
  position:relative;
  display:flex;align-items:center;
  height:40px;
  aspect-ratio:1000/300;
  max-width:180px;
}
.logo-img{height:100%;width:100%;object-fit:contain;object-position:left center;display:block}
.logo-fallback{
  display:none;
  align-items:center;gap:10px;
  height:100%;width:100%;
}
.logo-fallback .mark{width:28px;height:28px;flex:none}
.logo-fallback .mark path{fill:var(--accent)}
.logo-fallback-text{
  font-family:var(--font-display);font-weight:700;font-size:1rem;letter-spacing:-0.01em;
  line-height:1.15;color:var(--text);white-space:nowrap;
}
.logo-fallback-text small{
  display:block;font-family:var(--font-mono);font-weight:400;font-size:.58rem;
  letter-spacing:.1em;color:var(--text-dim);text-transform:uppercase;margin-top:2px;
}
@media (max-width:480px){
  .logo-box{height:32px}
  .logo-fallback-text small{display:none}
}

/* ---------- Footer logo (square slot) ---------- */
/* Place your square logo PNG at: /assets/img/logo-square.png (e.g.
   200x200 or larger, square, transparent background). Falls back to the
   hexagonal brand mark alone if the file is missing. */
.footer-logo-box{
  position:relative;
  display:block;
  width:52px;height:52px;
  margin-bottom:18px;
}
.footer-logo-img{width:100%;height:100%;object-fit:contain;display:block}
.footer-logo-fallback{
  display:none;
  align-items:center;justify-content:center;
  width:100%;height:100%;
}
.footer-logo-fallback .mark{width:100%;height:100%}
.footer-logo-fallback .mark path{fill:var(--accent)}

.main-nav{display:flex;align-items:center;gap:2px}
.main-nav > ul{display:flex;align-items:center;gap:2px}
.main-nav a.nav-link{
  display:flex;align-items:center;gap:5px;
  padding:10px 14px;border-radius:999px;
  font-size:.86rem;font-weight:500;color:var(--text-dim);
  white-space:nowrap;
  transition:color .2s ease, background .2s ease;
}
.main-nav a.nav-link:hover, .main-nav a.nav-link.active{color:var(--text);background:rgba(245,245,247,.06)}
.main-nav li.has-dropdown{position:relative}
.main-nav .chev{width:10px;height:10px;opacity:.7;transition:transform .25s ease}
.main-nav li.has-dropdown:hover .chev{transform:rotate(180deg)}

.dropdown{
  position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(6px);
  width:640px;
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:14px;
  display:grid;grid-template-columns:1fr 1fr;gap:2px;
  opacity:0;visibility:hidden;
  transition:opacity .25s ease, transform .25s ease, visibility .25s;
  z-index:50;
}
.main-nav li.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{
  display:flex;flex-direction:column;gap:3px;
  padding:12px 14px;border-radius:9px;
  transition:background .2s ease;
}
.dropdown a:hover{background:rgba(245,245,247,.05)}
.dropdown a .d-title{font-size:.87rem;font-weight:600;color:var(--text)}
.dropdown a .d-desc{font-size:.76rem;color:var(--text-dim)}

.header-cta{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none}
.mobile-nav-cta{display:none}

/* ---------- Hero systems graphic (signature element) ---------- */
.hex-graphic{position:absolute;inset:0;overflow:visible;pointer-events:none}
.hex-graphic .node{fill:var(--accent)}
.hex-graphic .node.dim{fill:var(--text-dim)}
.hex-graphic .edge{stroke:rgba(250,196,75,.28);stroke-width:1;fill:none;stroke-dasharray:4 500}
.js .hex-graphic.in-view .node{animation:node-in .8s var(--ease) forwards}
.js .hex-graphic.in-view .edge{animation:edge-draw 1.6s var(--ease) forwards}
@keyframes node-in{to{opacity:1}}
@keyframes edge-draw{to{opacity:1;stroke-dashoffset:0;stroke-dasharray:500 0}}
.pulse-dot{animation:pulse 3.2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:190px 0 120px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-inner{max-width:800px;position:relative;z-index:2}
.hero h1{margin-top:22px}
.hero p.lead{margin-top:24px}
.hero .cta-row{margin-top:38px;display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{position:absolute;top:0;right:-6%;width:56%;height:100%;z-index:1;opacity:.9}
@media (max-width:1000px){.hero-visual{display:none}}

.page-hero{padding:170px 0 80px;border-bottom:1px solid var(--line);position:relative}
.page-hero .eyebrow{margin-bottom:18px}
.page-hero .lead{margin-top:20px;font-size:1.1rem}
.breadcrumb{
  display:flex;gap:8px;align-items:center;
  font-family:var(--font-mono);font-size:.72rem;color:var(--text-dim);letter-spacing:.04em;
  margin-bottom:28px;text-transform:uppercase;
}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}

/* ---------- Sections ---------- */
section{position:relative;z-index:1}
.section{padding:110px 0}
.section.tight{padding:80px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.divider{border:none;border-top:1px solid var(--line);margin:0}

/* ---------- Grids / cards ---------- */
.grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}
@media (min-width:901px) and (max-width:1150px){.grid-4{grid-template-columns:repeat(2,1fr)}}

.cell{background:var(--bg);padding:38px 34px;transition:background .3s ease}
.cell:hover{background:var(--bg-elev)}
.cell .icon{width:42px;height:42px;margin-bottom:22px}
.cell .icon path,.cell .icon rect,.cell .icon circle,.cell .icon polygon{stroke:var(--accent)}
.cell h3{margin-bottom:10px}
.cell p{margin-top:6px;font-size:.95rem}
.cell ul{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.cell ul li{font-size:.9rem;color:var(--text-dim);display:flex;gap:10px;align-items:flex-start}
.cell ul li::before{content:"";width:5px;height:5px;background:var(--accent);flex:none;margin-top:8px;clip-path:polygon(50% 0%,100% 25%,100% 75%,50% 100%,0% 75%,0% 25%)}

.card{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:34px;
  transition:border-color .3s ease, transform .3s var(--ease);
}
.card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.card-link{display:block}

/* Standalone (non-grid) cards row */
.card-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
@media (max-width:700px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--bg);padding:36px 28px;text-align:left}
.stat .num{font-family:var(--font-display);font-weight:700;font-size:2.6rem;color:var(--accent);letter-spacing:-0.02em}
.stat .label{margin-top:6px;font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-dim)}

/* ---------- Process / numbered steps ---------- */
.steps{display:flex;flex-direction:column}
.step{
  display:grid;grid-template-columns:90px 1fr;gap:28px;
  padding:36px 0;border-top:1px solid var(--line);
  align-items:start;
}
.steps .step:last-child{border-bottom:1px solid var(--line)}
.step .idx{font-family:var(--font-mono);color:var(--accent);font-size:.95rem;padding-top:4px}
.step h3{margin-bottom:8px}
@media (max-width:640px){.step{grid-template-columns:1fr;gap:10px}}

/* ---------- Logo / marquee strip ---------- */
.marquee-wrap{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.marquee{display:flex;width:max-content;animation:marquee 34s linear infinite}
.marquee-wrap:hover .marquee{animation-play-state:paused}
.marquee span{
  font-family:var(--font-mono);font-size:.85rem;letter-spacing:.05em;color:var(--text-dim);
  padding:24px 34px;white-space:nowrap;border-right:1px solid var(--line);
}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- Pricing / plan cards ---------- */
.plan{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-lg);padding:36px;display:flex;flex-direction:column;height:100%}
.plan.featured{border-color:var(--accent-line);background:linear-gradient(180deg, rgba(250,196,75,.06), rgba(250,196,75,0) 40%), var(--bg-alt)}
.plan .tag{align-self:flex-start;background:var(--accent-dim);color:var(--accent);font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;padding:5px 11px;border-radius:999px;margin-bottom:18px}
.plan h3{margin-bottom:6px}
.plan .price{font-family:var(--font-display);font-size:1.9rem;font-weight:700;margin:14px 0 4px;color:var(--text)}
.plan .price span{font-family:var(--font-body);font-size:.85rem;color:var(--text-dim);font-weight:400}
.plan p.desc{font-size:.9rem;margin-bottom:20px}
.plan ul{display:flex;flex-direction:column;gap:11px;margin:22px 0 28px;flex:1}
.plan ul li{font-size:.88rem;color:var(--text-dim);display:flex;gap:10px}
.plan ul li::before{content:"→";color:var(--accent);flex:none}

/* ---------- Timeline (Insights/blog) ---------- */
.post-card{display:flex;flex-direction:column;gap:14px}
.post-card .meta{font-family:var(--font-mono);font-size:.72rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:.08em;display:flex;gap:10px;align-items:center}
.post-card .meta .tag{color:var(--accent)}
.post-thumb{aspect-ratio:16/10;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--bg-alt);position:relative}
.post-card h3{font-size:1.15rem}
.post-card p{font-size:.9rem}

article.prose{max-width:720px}
article.prose h2{margin-top:52px;margin-bottom:18px;font-size:1.7rem}
article.prose h3{margin-top:34px;margin-bottom:14px}
article.prose p{color:var(--text-dim);margin-bottom:18px;max-width:none;font-size:1.02rem;line-height:1.75}
article.prose ul{margin:18px 0 22px 0;display:flex;flex-direction:column;gap:10px}
article.prose ul li{color:var(--text-dim);padding-left:22px;position:relative;font-size:1rem}
article.prose ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;background:var(--accent);clip-path:polygon(50% 0%,100% 25%,100% 75%,50% 100%,0% 75%,0% 25%)}
article.prose blockquote{border-left:2px solid var(--accent);padding:6px 0 6px 26px;margin:30px 0;font-family:var(--font-display);font-size:1.25rem;font-weight:500;color:var(--text);letter-spacing:-0.01em}
.share-row{display:flex;gap:12px;align-items:center;margin-top:50px;padding-top:30px;border-top:1px solid var(--line)}

/* ---------- Forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:700px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:9px;margin-bottom:20px}
.field.full{grid-column:1/-1}
.field label{font-size:.82rem;font-weight:600;color:var(--text)}
.field .req{color:var(--accent)}
.field input,.field textarea,.field select{
  background:var(--bg-alt);
  border:1px solid var(--line-strong);
  border-radius:9px;
  padding:13px 15px;
  font-size:.94rem;
  color:var(--text);
  transition:border-color .2s ease, background .2s ease;
}
.field select{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238A8A8F' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 15px center}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--accent);background:var(--bg-elev)}
.field textarea{resize:vertical;min-height:120px}
.field-hint{font-size:.78rem;color:var(--text-dim)}
.checkbox-group{display:flex;flex-wrap:wrap;gap:10px}
.chip-check{position:relative}
.chip-check input{position:absolute;opacity:0;inset:0;cursor:pointer}
.chip-check span{
  display:inline-flex;padding:9px 16px;border:1px solid var(--line-strong);border-radius:999px;
  font-size:.84rem;color:var(--text-dim);transition:all .2s ease;
}
.chip-check input:checked + span{border-color:var(--accent);color:var(--accent);background:var(--accent-dim)}
.radio-row{display:flex;flex-wrap:wrap;gap:10px}
.form-note{display:flex;gap:10px;align-items:flex-start;font-size:.8rem;color:var(--text-dim);margin-top:8px}
.form-note svg{flex:none;width:16px;height:16px;margin-top:2px}
.form-success{display:none;text-align:center;padding:60px 20px}
.form-success.show{display:block}
.form-success svg{width:52px;height:52px;color:var(--accent);margin:0 auto 20px}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  padding:100px 0;
  text-align:center;
  border-top:1px solid var(--line);
}
.cta-band h2{max-width:680px;margin:0 auto}
.cta-band p{margin:18px auto 0;max-width:520px}
.cta-band .cta-row{justify-content:center;margin-top:34px}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:80px 0 0;background:var(--bg-alt)}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:60px}
@media (max-width:900px){.footer-top{grid-template-columns:1fr 1fr;row-gap:40px}}
@media (max-width:560px){.footer-top{grid-template-columns:1fr}}
.footer-brand p{margin-top:16px;font-size:.9rem;max-width:280px}
.footer-social{display:flex;gap:10px;margin-top:24px}
.footer-social a{width:36px;height:36px;border:1px solid var(--line-strong);border-radius:999px;display:flex;align-items:center;justify-content:center;transition:all .2s ease}
.footer-social a:hover{border-color:var(--accent);color:var(--accent)}
.footer-social svg{width:15px;height:15px}
.footer-col h5{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--text-dim);margin-bottom:20px;font-weight:500}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:.9rem;color:var(--text-dim);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{font-size:.88rem;color:var(--text-dim);margin-bottom:14px;display:flex;gap:10px}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:2px;color:var(--accent)}
.newsletter-form{display:flex;gap:8px;margin-top:18px}
.newsletter-form input{flex:1;background:var(--bg);border:1px solid var(--line-strong);border-radius:8px;padding:11px 13px;font-size:.85rem}
.newsletter-form button{background:var(--accent);color:#141416;border-radius:8px;padding:0 16px;font-weight:600;font-size:.82rem}
.footer-bottom{border-top:1px solid var(--line);padding:24px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom p{font-size:.78rem;color:var(--text-dim)}
.footer-bottom .legal-links{display:flex;gap:22px}
.footer-bottom .legal-links a{font-size:.78rem;color:var(--text-dim)}
.footer-bottom .legal-links a:hover{color:var(--accent)}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:90;
  width:44px;height:44px;border-radius:999px;
  background:var(--bg-elev);border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .3s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--accent);color:var(--accent)}
.to-top svg{width:16px;height:16px}

/* ---------- Reveal on scroll ----------
   Hidden state only applies once JS has confirmed it can reveal the
   content again (html.js, set by an inline script in <head>). Without
   JavaScript, everything is visible by default — progressive enhancement,
   not a dependency. */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease), transform .7s var(--ease)}
.js .reveal.in{opacity:1;transform:translateY(0)}
.js .hex-graphic .node{opacity:0}
.js .hex-graphic .edge{opacity:0}

/* ---------- Misc utility ---------- */
.flex{display:flex}
.flex-between{display:flex;justify-content:space-between;align-items:center}
.gap-12{gap:12px}
.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}.mt-48{margin-top:48px}.mt-64{margin-top:64px}
.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.mb-32{margin-bottom:32px}
.text-center{text-align:center}
.pill-list{display:flex;flex-wrap:wrap;gap:10px}
.pill{padding:8px 15px;border:1px solid var(--line-strong);border-radius:999px;font-size:.82rem;color:var(--text-dim)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
@media (max-width:900px){.two-col{grid-template-columns:1fr;gap:40px}}
.list-check{display:flex;flex-direction:column;gap:14px;margin-top:24px}
.list-check li{display:flex;gap:12px;font-size:.95rem;color:var(--text-dim)}
.list-check svg{flex:none;width:18px;height:18px;color:var(--accent);margin-top:2px}

/* ---------- 404 ---------- */
.error-page{min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:160px 20px 100px}
.error-page .code{font-family:var(--font-mono);color:var(--accent);font-size:1rem;letter-spacing:.2em}

/* ---------- Runtime partial placeholders ----------
   Brief placeholder sizing to reduce layout jump while
   /partials/header.html and /partials/footer.html load. */
#site-footer-slot{display:block;min-height:420px}
@media (max-width:900px){#site-footer-slot{min-height:640px}}
@media (max-width:980px){
  .main-nav{position:fixed;top:0;right:-100%;width:min(380px,88vw);height:100vh;background:var(--bg-alt);
    border-left:1px solid var(--line);flex-direction:column;align-items:stretch;padding:100px 26px 40px;
    transition:right .4s var(--ease);overflow-y:auto;z-index:99;}
  .main-nav.open{right:0}
  .main-nav > ul{flex-direction:column;align-items:stretch;gap:4px}
  .main-nav a.nav-link{padding:14px 12px;width:100%}
  .dropdown{position:static;transform:none;opacity:1;visibility:visible;width:100%;display:none;grid-template-columns:1fr;
    box-shadow:none;border:none;background:transparent;padding:4px 0 4px 14px;margin-top:2px;}
  .main-nav li.has-dropdown.open .dropdown{display:flex;flex-direction:column}
  .main-nav li.has-dropdown:hover .dropdown{display:none}
  .main-nav li.has-dropdown.open .dropdown{display:flex}
  .header-cta .btn-outline{display:none}
  .header-cta .btn-primary{display:none}
  .mobile-nav-cta{
    display:flex;flex-direction:column;gap:12px;
    margin-top:28px;padding-top:24px;border-top:1px solid var(--line);
  }
  .nav-toggle{display:flex;flex-direction:column;gap:5px;width:26px;z-index:101;background:none;border:none;padding:4px 0}
  .nav-toggle span{height:2px;background:var(--text);border-radius:2px;transition:all .3s ease}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-scrim{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:98;opacity:0;visibility:hidden;transition:opacity .3s ease}
  .nav-scrim.show{opacity:1;visibility:visible}
  .footer-top{padding-bottom:40px}
}

@media (max-width:640px){
  .hero{padding:150px 0 80px}
  .page-hero{padding:140px 0 60px}
  .section{padding:70px 0}
  .stats{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}