@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Instrument+Serif:ital@0;1&display=swap');

:root{
  --bg:#020713;
  --ink:#eefbff;
  --muted:#9ab6c8;
  --cyan:#00c8ff;
  --blue:#4b6cff;
  --green:#49f5a6;
  --pink:#ff4fd8;
  --line:rgba(128,232,255,.2);
  --panel:rgba(7,24,42,.68);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  min-height:100vh;
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 12% 14%,rgba(0,200,255,.25),transparent 26rem),
    radial-gradient(circle at 88% 8%,rgba(255,79,216,.18),transparent 28rem),
    radial-gradient(circle at 72% 72%,rgba(73,245,166,.14),transparent 30rem),
    linear-gradient(135deg,#020713,#071629 48%,#020713);
  overflow-x:hidden;
}

a{color:inherit;text-decoration:none}
h1,h2,h3,.brand{font-family:'Instrument Serif',Georgia,serif;font-weight:400;letter-spacing:0;line-height:.96}
p{line-height:1.75;color:var(--muted)}

.blog-shell{position:relative;isolation:isolate;min-height:100vh}
.blog-shell::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-3;
  background-image:
    linear-gradient(rgba(128,232,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(128,232,255,.06) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(ellipse at center,#000 20%,transparent 76%);
}
.blog-shell::after{
  content:"";
  position:fixed;
  inset:auto -15% -35% -15%;
  height:42rem;
  z-index:-2;
  background:conic-gradient(from 140deg,rgba(0,200,255,.2),rgba(255,79,216,.2),rgba(73,245,166,.16),rgba(0,200,255,.2));
  filter:blur(90px);
  opacity:.75;
  animation:hueDrift 12s linear infinite;
}

.noise{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.16;background-image:radial-gradient(rgba(255,255,255,.25) 1px,transparent 1px);background-size:4px 4px;mix-blend-mode:overlay}

.blog-nav{
  position:sticky;
  top:0;
  z-index:20;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:1rem clamp(1rem,4vw,4rem);
  border-bottom:1px solid var(--line);
  background:rgba(2,7,19,.68);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.brand{font-size:1.55rem}
.accent{color:var(--cyan)}
.nav-cluster{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;justify-content:flex-end}
.pill{display:inline-flex;align-items:center;justify-content:center;min-height:2.45rem;padding:.65rem 1rem;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.045);color:var(--muted);font-size:.9rem;transition:transform .22s,border-color .22s,color .22s,background .22s}
.pill:hover,.pill.active{transform:translateY(-2px);border-color:rgba(0,200,255,.55);color:var(--ink);background:rgba(0,200,255,.1)}
.pill.primary{border-color:transparent;color:#02111f;background:linear-gradient(135deg,var(--cyan),#8af7ff);box-shadow:0 16px 44px rgba(0,200,255,.22)}
.theme-toggle{display:inline-flex;align-items:center;gap:.45rem;min-height:2.45rem;padding:.25rem .75rem .25rem .35rem;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.045);color:var(--muted);font:700 .68rem/1 'Inter',system-ui,sans-serif;letter-spacing:.08em;text-transform:uppercase;cursor:pointer;transition:transform .22s,border-color .22s,color .22s,background .22s;white-space:nowrap}
.theme-toggle:hover{transform:translateY(-2px);border-color:rgba(0,200,255,.55);color:var(--ink);background:rgba(0,200,255,.1)}
.theme-toggle-orb{width:1.35rem;height:1.35rem;border-radius:999px;background:linear-gradient(135deg,#eefbff 45%,var(--cyan) 46%);box-shadow:0 0 20px rgba(0,200,255,.35);transition:background .25s,box-shadow .25s,transform .25s}
.theme-toggle[aria-pressed="true"] .theme-toggle-orb{background:radial-gradient(circle at 68% 32%,#eefbff 0 18%,transparent 19%),linear-gradient(135deg,var(--cyan),var(--blue));box-shadow:0 0 26px rgba(0,200,255,.52);transform:rotate(-18deg)}
@media(max-width:680px){.theme-toggle{padding:.25rem}.theme-toggle-label{display:none}}

.hero{position:relative;min-height:86vh;display:grid;align-items:end;padding:clamp(5rem,9vw,8rem) clamp(1rem,5vw,5rem) clamp(3rem,6vw,5rem);overflow:hidden}
.hero-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(18rem,.42fr);gap:clamp(2rem,6vw,6rem);align-items:end;max-width:88rem;margin:0 auto;width:100%}
.eyebrow{display:flex;align-items:center;gap:.8rem;color:#b8eaff;text-transform:uppercase;letter-spacing:.22em;font-size:.74rem;margin-bottom:1.25rem}
.eyebrow::before{content:"";width:3rem;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
h1{font-size:clamp(4rem,11vw,10.5rem);max-width:10ch;text-shadow:0 0 50px rgba(0,200,255,.18)}
.hero-copy{max-width:46rem;margin-top:1.5rem;font-size:clamp(1.05rem,1.7vw,1.35rem)}
.hero-panel{position:relative;padding:1.2rem;border:1px solid var(--line);background:linear-gradient(145deg,rgba(255,255,255,.09),rgba(0,200,255,.045));box-shadow:0 42px 110px rgba(0,200,255,.12);overflow:hidden}
.hero-panel::before{content:"";position:absolute;inset:-40%;background:conic-gradient(from 0deg,transparent,rgba(0,200,255,.28),transparent,rgba(255,79,216,.2),transparent);animation:spin 9s linear infinite;opacity:.55}
.hero-panel > *{position:relative}
.signal{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.signal div{background:rgba(2,7,19,.86);padding:1rem}
.signal strong{display:block;font-family:'Instrument Serif',serif;font-size:3rem;color:var(--cyan);font-weight:400}
.signal span{display:block;color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.16em}

.orbit{position:absolute;border:1px solid rgba(128,232,255,.16);border-radius:999px;pointer-events:none}
.orbit.one{width:38rem;height:38rem;right:-10rem;top:7rem;animation:floatA 9s ease-in-out infinite}
.orbit.two{width:22rem;height:22rem;left:-8rem;bottom:7rem;animation:floatB 11s ease-in-out infinite}
.orbit::after{content:"";position:absolute;width:.8rem;height:.8rem;border-radius:999px;background:var(--cyan);box-shadow:0 0 24px var(--cyan);top:16%;left:22%}

.section{max-width:88rem;margin:0 auto;padding:clamp(4rem,8vw,7rem) clamp(1rem,5vw,5rem)}
.section-head{display:grid;grid-template-columns:minmax(0,.75fr) minmax(16rem,.4fr);gap:2rem;align-items:end;margin-bottom:2rem}
.section h2{font-size:clamp(3rem,7vw,6.5rem)}
.section-head p{font-size:1.05rem}

.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.article-card{position:relative;min-height:30rem;padding:1.4rem;background:rgba(4,16,31,.78);overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;transition:transform .35s ease,background .35s ease}
.article-card::before{content:"";position:absolute;inset:-35%;background:radial-gradient(circle at var(--mx,50%) var(--my,50%),rgba(0,200,255,.28),transparent 28%);opacity:0;transition:opacity .3s}
.article-card:hover{transform:translateY(-8px);background:rgba(7,28,50,.9)}
.article-card:hover::before{opacity:1}
.article-card:hover h3{text-shadow:0 0 34px rgba(0,200,255,.24)}
.article-card > *{position:relative}
.card-top{display:flex;justify-content:space-between;gap:1rem;color:#bdefff;font-size:.75rem;text-transform:uppercase;letter-spacing:.18em}
.article-card h3{font-size:clamp(2.1rem,3.6vw,3.6rem);margin:4rem 0 1rem}
.tags{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:1.5rem}
.tags span{font-size:.75rem;border:1px solid var(--line);border-radius:999px;padding:.35rem .6rem;color:#c9f5ff;background:rgba(255,255,255,.04)}

.read-more{display:inline-flex;align-items:center;gap:.55rem;margin-top:1.6rem;color:#8ff2ff;font-size:.78rem;text-transform:uppercase;letter-spacing:.16em}
.read-more::after{content:"";width:2.2rem;height:1px;background:linear-gradient(90deg,var(--cyan),transparent);transition:transform .25s}
.article-card:hover .read-more::after{transform:translateX(.45rem)}

.deep-doc{display:grid;grid-template-columns:minmax(0,.75fr) minmax(0,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.doc-nav,.doc-body{background:rgba(2,7,19,.78);padding:clamp(1.25rem,4vw,3rem)}
.doc-nav{position:relative}
.doc-nav h2{font-size:clamp(2.6rem,6vw,5.8rem);margin-bottom:1.5rem}
.doc-list{list-style:none;display:grid;gap:.75rem}
.doc-list button{width:100%;text-align:left;border:1px solid var(--line);background:rgba(255,255,255,.045);color:var(--muted);padding:1rem;border-radius:.85rem;cursor:pointer;font:inherit;transition:background .25s,border-color .25s,color .25s,transform .25s}
.doc-list button:hover,.doc-list button.active{background:rgba(0,200,255,.11);border-color:rgba(0,200,255,.52);color:var(--ink);transform:translateX(.35rem)}
.doc-panel{display:none;animation:panelIn .45s ease both}
.doc-panel.active{display:block}
.doc-panel h3{font-size:clamp(2.4rem,5vw,4.6rem);margin-bottom:1rem}
.doc-panel p + p{margin-top:1rem}
.checklist{list-style:none;margin-top:1.5rem;display:grid;gap:.85rem}
.checklist li{position:relative;padding-left:2rem;color:#d8edf5;line-height:1.6}
.checklist li::before{content:"";position:absolute;left:0;top:.4rem;width:.85rem;height:.85rem;border-radius:999px;background:linear-gradient(135deg,var(--green),var(--cyan));box-shadow:0 0 22px rgba(73,245,166,.45)}

.timeline{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.timeline-item{display:grid;grid-template-columns:8rem 1fr;gap:2rem;background:rgba(4,16,31,.8);padding:clamp(1.25rem,4vw,2.4rem)}
.timeline-item strong{font-family:'Instrument Serif',serif;font-size:3rem;color:var(--cyan);font-weight:400}
.timeline-item h3{font-size:2rem;margin-bottom:.45rem}

.cta{position:relative;overflow:hidden;margin-top:clamp(4rem,8vw,7rem);padding:clamp(2rem,6vw,5rem);border:1px solid var(--line);background:linear-gradient(135deg,rgba(0,200,255,.14),rgba(255,79,216,.08),rgba(73,245,166,.08));display:flex;align-items:center;justify-content:space-between;gap:2rem}
.cta::before{content:"";position:absolute;inset:-60%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);transform:rotate(20deg);animation:sweep 5s ease-in-out infinite}
.cta > *{position:relative}
.cta h2{font-size:clamp(2.8rem,7vw,6rem)}

.article-hero{min-height:72vh;align-items:center}
.article-hero h1{max-width:12ch}
.article-meta{display:flex;gap:.7rem;flex-wrap:wrap;margin-top:2rem}
.article-meta span{border:1px solid var(--line);border-radius:999px;padding:.5rem .75rem;color:#c9f5ff;background:rgba(255,255,255,.045);font-size:.78rem;text-transform:uppercase;letter-spacing:.14em}
.article-body{max-width:78rem;margin:0 auto;padding:0 clamp(1rem,5vw,5rem) clamp(5rem,8vw,7rem)}
.article-layout{display:grid;grid-template-columns:minmax(0,.32fr) minmax(0,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.article-aside,.article-content{background:rgba(2,7,19,.8);padding:clamp(1.25rem,4vw,3rem)}
.article-aside{position:sticky;top:5rem;align-self:start}
.article-aside h2{font-size:clamp(2.4rem,4vw,4rem);margin-bottom:1rem}
.article-aside ol{list-style:none;display:grid;gap:.75rem;counter-reset:item}
.article-aside li{counter-increment:item;color:var(--muted);line-height:1.55}
.article-aside li::before{content:"0" counter(item);display:block;color:var(--cyan);font-family:'Instrument Serif',serif;font-size:2rem;line-height:1}
.article-content h2{font-size:clamp(2.6rem,5vw,5rem);margin:0 0 1rem}
.article-content h3{font-size:clamp(2rem,3.4vw,3.2rem);margin:2.2rem 0 .8rem}
.article-content p + p{margin-top:1rem}
.article-content .note{margin:2rem 0;padding:1.2rem;border:1px solid rgba(73,245,166,.28);background:linear-gradient(135deg,rgba(73,245,166,.09),rgba(0,200,255,.05));color:#dffdf0}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:2rem}
.related-grid a{background:rgba(4,16,31,.78);padding:1.2rem;min-height:10rem;transition:background .25s,transform .25s}
.related-grid a:hover{background:rgba(0,200,255,.1);transform:translateY(-4px)}
.related-grid strong{display:block;font-family:'Instrument Serif',serif;font-size:2rem;font-weight:400;margin-bottom:.5rem}

.reveal{opacity:0;transform:translateY(2rem);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.8,.2,1)}
.reveal.in-view{opacity:1;transform:translateY(0)}

@keyframes spin{to{transform:rotate(360deg)}}
@keyframes hueDrift{to{filter:blur(90px) hue-rotate(360deg)}}
@keyframes floatA{50%{transform:translateY(1.4rem) rotate(8deg)}}
@keyframes floatB{50%{transform:translateY(-1rem) rotate(-10deg)}}
@keyframes panelIn{from{opacity:0;transform:translateY(.8rem)}to{opacity:1;transform:translateY(0)}}
@keyframes sweep{0%,55%{transform:translateX(-70%) rotate(20deg)}100%{transform:translateX(70%) rotate(20deg)}}

@media(max-width:980px){
  .hero-inner,.section-head,.deep-doc{grid-template-columns:1fr}
  .article-layout{grid-template-columns:1fr}
  .article-aside{position:relative;top:auto}
  .related-grid{grid-template-columns:1fr}
  .article-grid{grid-template-columns:1fr}
  .hero{min-height:auto}
  .hero-panel{max-width:28rem}
}
@media(max-width:640px){
  .blog-nav{align-items:flex-start;flex-direction:column}
  .nav-cluster{justify-content:flex-start}
  h1{font-size:clamp(3.4rem,19vw,5.2rem)}
  .article-card{min-height:24rem}
  .timeline-item{grid-template-columns:1fr;gap:.5rem}
  .cta{flex-direction:column;align-items:flex-start}
}

/* Magnetic buttons */
.magnetic-button{transform:translate3d(var(--magnet-x,0),var(--magnet-y,0),0) perspective(600px) rotateX(var(--magnet-rx,0deg)) rotateY(var(--magnet-ry,0deg));transition:transform .28s cubic-bezier(.16,1,.3,1),box-shadow .25s ease,background .25s ease}
@media(hover:none),(pointer:coarse){.magnetic-button{transform:none!important}}
@media(prefers-reduced-motion:reduce){.magnetic-button{transform:none!important}}