:root{
  --bg:#090b0e;--bg2:#0d1014;--card:#11151b;--card2:#151a21;--line:#252c36;
  --text:#f3f6f9;--muted:#9aa5b3;--blue:#5bb3ff;--blue2:#82c7ff;--green:#86e0a9;
  --red:#ff8892;--yellow:#ffd86b;--max:1180px;--radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:100;opacity:.025;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.9'/%3E%3C/svg%3E");
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit}
.container{width:min(var(--max),calc(100% - 38px));margin:auto}
.mono,.kicker,.eyebrow,.exam,.tag,.command{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
.header{
  position:sticky;top:0;z-index:80;background:rgba(9,11,14,.82);
  backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.055)
}
.navbar{height:72px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:850;letter-spacing:.03em}
.logo-mark{
  width:36px;height:36px;border-radius:9px;border:2px solid var(--blue);
  display:grid;place-items:center;color:var(--blue);font-weight:900
}
.logo-word span{color:var(--blue)}
.navlinks{display:flex;align-items:center;gap:27px;font-size:.9rem;color:#c2cad4}
.navlinks a:hover{color:#fff}
.nav-pill{border:1px solid var(--line);border-radius:10px;padding:9px 13px}
.menu{display:none;background:none;border:0;color:#fff;font-size:1.5rem;cursor:pointer}
.hero{
  min-height:calc(100svh - 72px);display:flex;align-items:center;border-bottom:1px solid var(--line);
  background:
    radial-gradient(circle at 79% 28%,rgba(91,179,255,.12),transparent 30%),
    radial-gradient(circle at 10% 80%,rgba(91,179,255,.05),transparent 25%),
    linear-gradient(180deg,rgba(255,255,255,.01),transparent 30%);
}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:66px;align-items:center;padding:88px 0}
.eyebrow,.kicker{font-size:.77rem;letter-spacing:.13em;font-weight:800;color:var(--blue)}
.hero h1,.product-hero h1{
  font-size:clamp(3rem,6.2vw,5.9rem);line-height:.95;letter-spacing:-.058em;margin:18px 0 28px
}
.hero h1 em,.product-hero h1 em{font-style:normal;color:var(--blue)}
.lead{font-size:1.16rem;color:#b6c0cc;max-width:680px}
.lead strong{color:#fff}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:31px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:50px;
  padding:0 20px;border-radius:11px;font-weight:800;border:1px solid transparent;transition:.2s
}
.btn.primary{background:var(--blue);color:#06121c}
.btn.primary:hover{transform:translateY(-2px);filter:brightness(1.05)}
.btn.secondary{border-color:var(--line);background:rgba(255,255,255,.018);color:#e7ecf1}
.btn.secondary:hover{border-color:#3a4552;background:rgba(255,255,255,.04)}
.proof{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin-top:48px;padding-top:23px;border-top:1px solid var(--line)}
.proof div{display:flex;flex-direction:column}
.proof strong{font-size:.9rem}.proof span{font-size:.76rem;color:var(--muted)}
.lab-card{border:1px solid #2c3440;border-radius:20px;background:linear-gradient(180deg,#12161c,#0c0f13);overflow:hidden;box-shadow:0 32px 90px rgba(0,0,0,.35)}
.window{height:45px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 15px;gap:7px}
.dot{width:9px;height:9px;border-radius:50%;background:#3a4350}
.window small{margin-left:auto;color:#687485}
.topology{height:220px;position:relative;margin:18px}
.device{
  position:absolute;width:68px;height:47px;border:1px solid #3d4856;border-radius:10px;
  display:grid;place-items:center;background:#12161c;font:bold .73rem monospace
}
.d1{left:2%;top:85px}.d2{left:31%;top:85px;color:var(--blue);border-color:rgba(91,179,255,.55)}
.d3{right:31%;top:85px;color:var(--green);border-color:rgba(134,224,169,.55)}
.d4{right:2%;top:85px;color:var(--yellow);border-color:rgba(255,216,107,.45)}
.wire{height:1px;background:#3b4450;position:absolute;top:109px}
.w1{left:70px;width:calc(29% - 38px)}.w2{left:calc(31% + 68px);width:calc(38% - 68px)}.w3{right:70px;width:calc(29% - 38px)}
.cli{padding:0 20px 18px;color:#aeb8c4;font:500 .8rem monospace}
.cli p{margin:7px 0}.cli b{color:var(--blue)}
.note{margin:0 18px 18px;padding:15px 16px;border:1px solid #2b333d;border-radius:12px;background:#0b0e12}
.note strong{font:bold .71rem monospace;color:var(--yellow)}.note p{margin:5px 0 0;color:#aab4bf;font-size:.88rem}
.section{padding:105px 0;border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:42px}
.section-head h2,.split h2,.cta h2,.product-hero h2{
  font-size:clamp(2rem,4.5vw,3.65rem);line-height:1.06;letter-spacing:-.043em;margin:10px 0 14px
}
.section-head p{color:var(--muted);font-size:1.02rem}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.course{
  min-height:455px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);
  padding:26px;display:flex;flex-direction:column;position:relative;overflow:hidden
}
.course::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--course-color,var(--blue))}
.course.ccna{--course-color:var(--blue)}.course.encor{--course-color:var(--green)}.course.enarsi{--course-color:var(--red)}
.course-meta{display:flex;justify-content:space-between;gap:14px;align-items:center}
.badge{font-size:.71rem;border-radius:999px;padding:5px 9px;font-weight:850;background:rgba(255,255,255,.05);color:#b8c0ca}
.ccna .badge{background:rgba(91,179,255,.1);color:var(--blue)}
.exam{font-size:.68rem;color:#6f7b8a}
.course h3{font-size:2.15rem;margin:27px 0 8px;letter-spacing:-.04em}
.course p{color:#a9b3bf}
.course ul{list-style:none;padding:0;margin:15px 0 30px}
.course li{padding:7px 0;border-bottom:1px dashed #28303a;font-size:.9rem;color:#c6ced7}
.course li::before{content:"✓";color:var(--course-color);margin-right:9px}
.course-link{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-weight:800;color:var(--course-color)}
.course-link:hover span{transform:translateX(4px)}
.chalk{background:#0b0e11}
.steps{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.step{padding:29px;min-height:225px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}.step-no{font:bold .78rem monospace;color:var(--blue)}
.step h3{margin:42px 0 7px;font-size:1.35rem}.step p{color:var(--muted);font-size:.9rem;margin:0}
.split{display:grid;grid-template-columns:1fr 1fr;gap:82px;align-items:start}
.copy{color:#aab4bf;font-size:1.04rem}.copy strong{color:#fff}
.faq{max-width:880px}
details{border-top:1px solid var(--line);padding:21px 1px}
details:last-child{border-bottom:1px solid var(--line)}
summary{font-weight:800;cursor:pointer;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";float:right;color:var(--blue);font-size:1.25rem}
details[open] summary::after{content:"−"}
details p{color:var(--muted);max-width:760px}
.cta-wrap{padding:72px 0 100px}
.cta{
  border:1px solid #2c3541;border-radius:22px;padding:42px;background:
  radial-gradient(circle at 10% 0,rgba(91,179,255,.12),transparent 35%),#0d1014;
  display:flex;align-items:center;justify-content:space-between;gap:40px
}
.cta h2{max-width:760px;font-size:clamp(2rem,4vw,3.05rem)}
.footer{border-top:1px solid var(--line);padding:28px 0;color:#7e8997;font-size:.8rem}
.footer-grid{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px}
.footer-grid>:last-child{text-align:right}

/* product pages */
.product-hero{
  padding:90px 0 75px;border-bottom:1px solid var(--line);
  background:radial-gradient(circle at 80% 20%,color-mix(in srgb,var(--accent) 15%,transparent),transparent 32%)
}
.product-hero .container{display:grid;grid-template-columns:1.12fr .88fr;gap:70px;align-items:center}
.product-hero h1{font-size:clamp(3rem,6vw,5.5rem);margin-bottom:18px}
.product-hero h1 em{color:var(--accent)}
.product-card{border:1px solid #303846;background:var(--card);border-radius:20px;padding:28px}
.product-card .price-note{font-size:.8rem;color:var(--muted)}
.product-card h3{font-size:1.8rem;margin:10px 0}
.product-card ul{list-style:none;padding:0}
.product-card li{border-bottom:1px dashed #2a323d;padding:9px 0;color:#c5cdd6}
.product-card li::before{content:"✓";color:var(--accent);margin-right:10px}
.product-card .btn{width:100%;margin-top:20px;background:var(--accent);color:#06121c}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.topic{border:1px solid var(--line);border-radius:14px;background:var(--card);padding:22px}
.topic .tag{font-size:.68rem;color:var(--accent)}
.topic h3{margin:12px 0 5px;font-size:1.1rem}.topic p{color:var(--muted);font-size:.9rem;margin:0}
.info-band{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--line)}
.info-band div{background:var(--card);padding:23px}.info-band strong{display:block;font-size:1.4rem}.info-band span{color:var(--muted);font-size:.82rem}

/* bio */
.bio-page{min-height:100svh;display:grid;place-items:center;padding:35px 18px;background:radial-gradient(circle at 50% 0,rgba(91,179,255,.12),transparent 35%),var(--bg)}
.bio-shell{width:min(620px,100%);text-align:center}
.bio-logo{display:flex;justify-content:center;margin-bottom:22px}.bio-logo img{width:260px}
.bio-shell h1{font-size:2rem;letter-spacing:-.04em;margin:0 0 8px}
.bio-shell>p{color:var(--muted);margin:0 auto 26px;max-width:520px}
.bio-links{display:grid;gap:12px}
.bio-link{
  min-height:66px;border:1px solid var(--line);border-radius:14px;background:var(--card);
  display:flex;align-items:center;justify-content:space-between;padding:0 18px;text-align:left;font-weight:800
}
.bio-link span{font-size:.8rem;color:var(--muted);font-weight:500}
.bio-link.featured{border-color:rgba(91,179,255,.45);box-shadow:inset 0 0 0 1px rgba(91,179,255,.08)}
.bio-mini{margin-top:25px;font-size:.74rem;color:#66717f}

/* generic */
.page-title{padding:86px 0 56px;border-bottom:1px solid var(--line)}
.page-title h1{font-size:clamp(2.6rem,5vw,4.9rem);letter-spacing:-.052em;line-height:.98;margin:12px 0}
.page-title p{max-width:730px;color:var(--muted);font-size:1.08rem}
.small-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.small-card{padding:25px;border:1px solid var(--line);border-radius:16px;background:var(--card)}
.small-card h3{margin-top:0}.small-card p{color:var(--muted)}

@media (max-width:920px){
  .hero-grid,.split,.product-hero .container{grid-template-columns:1fr;gap:48px}
  .hero{min-height:auto}
  .cards,.topic-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .navlinks{display:none;position:absolute;top:66px;left:18px;right:18px;flex-direction:column;align-items:stretch;background:#0d1014;border:1px solid var(--line);border-radius:14px;padding:14px}
  .navlinks.open{display:flex}.navlinks a{padding:10px}.menu{display:block}
  .footer-grid{grid-template-columns:1fr;text-align:center}.footer-grid>:last-child{text-align:center}.footer-grid .logo{justify-content:center}
}
@media (max-width:620px){
  .container{width:min(var(--max),calc(100% - 28px))}
  .hero-grid{padding:62px 0}.hero h1,.product-hero h1{font-size:3.2rem}
  .lab-card{display:none}.proof{grid-template-columns:1fr;gap:9px}
  .section{padding:76px 0}.steps{grid-template-columns:1fr}.step{border-right:0!important;border-bottom:1px solid var(--line)!important}.step:last-child{border-bottom:0!important}
  .split,.small-grid{grid-template-columns:1fr}
  .cta{padding:28px;flex-direction:column;align-items:flex-start}
  .info-band{grid-template-columns:1fr}
}


/* v3 — richer visual product presentation */
.hero-art{
  position:relative;
  display:grid;
  place-items:center;
}
.hero-cover{
  width:min(430px,100%);
  border-radius:22px;
  border:1px solid #303945;
  box-shadow:0 34px 95px rgba(0,0,0,.48);
  transform:rotate(1.2deg);
}
.hero-cover-badge{
  position:absolute;
  left:-18px;
  bottom:28px;
  background:#0c1015;
  border:1px solid #2f3946;
  border-radius:14px;
  padding:13px 16px;
  box-shadow:0 18px 50px rgba(0,0,0,.36);
}
.hero-cover-badge strong{display:block;color:var(--blue);font-size:1.3rem}
.hero-cover-badge span{font-size:.78rem;color:var(--muted)}

.course.has-cover{padding:0;min-height:0}
.course-cover-wrap{
  background:#0a0d10;
  border-bottom:1px solid var(--line);
  aspect-ratio:4/5;
  overflow:hidden;
}
.course-cover-wrap img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s ease;
}
.course.has-cover:hover .course-cover-wrap img{transform:scale(1.025)}
.course-body{padding:25px;display:flex;flex-direction:column;flex:1}
.course-body .course-link{margin-top:auto}
.course-count{
  display:inline-flex;
  width:max-content;
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px 10px;
  font:700 .72rem monospace;
  margin:4px 0 10px;
  color:var(--course-color);
  background:rgba(255,255,255,.025);
}

.product-hero.with-cover .container{
  grid-template-columns:.95fr .8fr;
}
.product-cover-panel{
  display:flex;
  justify-content:center;
}
.product-cover-panel img{
  width:min(460px,100%);
  border-radius:22px;
  border:1px solid #313b48;
  box-shadow:0 36px 110px rgba(0,0,0,.48);
}
.product-summary-card{
  margin-top:24px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
}
.product-summary-card div{
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  border-radius:12px;
  padding:13px;
}
.product-summary-card strong{display:block;color:var(--accent);font-size:1.05rem}
.product-summary-card span{font-size:.72rem;color:var(--muted)}
.visual-proof{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:34px;
  align-items:center;
}
.visual-proof img{
  width:100%;
  border-radius:18px;
  border:1px solid var(--line);
  box-shadow:0 24px 80px rgba(0,0,0,.3);
}
.visual-proof .copy h2{color:#fff}
.visual-proof .check-list{list-style:none;padding:0;margin:22px 0 0}
.visual-proof .check-list li{
  padding:9px 0;
  border-bottom:1px dashed #2a323d;
}
.visual-proof .check-list li::before{
  content:"✓";
  color:var(--accent,var(--blue));
  margin-right:10px;
}
@media (max-width:920px){
  .product-hero.with-cover .container,.visual-proof{grid-template-columns:1fr}
  .product-cover-panel{order:-1}
  .product-cover-panel img{width:min(380px,100%)}
}
@media (max-width:620px){
  .hero-art{display:block}
  .hero-cover{width:100%;transform:none}
  .hero-cover-badge{position:static;margin-top:12px}
  .product-summary-card{grid-template-columns:1fr}
}