:root{
  --bg:#0a1628; --bg-2:#0d1d35; --bg-3:#132a4a; --card:#0f2140; --line:#1f3a60;
  --fg:#f5f5f5; --fg-2:#b9c7dc; --fg-3:#7f93b2;
  --accent:#00b8d9; --accent-2:#00d4f5; --accent-ink:#04202a; --ok:#22c55e;
  --r:12px; --wrap:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800}
h2,.h2{font-size:clamp(1.6rem,3vw,2.25rem);font-weight:800}
h3{font-size:1.05rem;font-weight:700}
p{margin:0 0 1em;color:var(--fg-2)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:var(--accent);color:var(--accent-ink);padding:8px 12px;border-radius:8px;z-index:99}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(8,18,34,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.45rem;letter-spacing:-.02em}
.logo-mark{width:32px;height:32px}
.nav{display:flex;align-items:center;gap:22px;margin-left:auto;font-size:.9rem;font-weight:500}
.nav>a{color:var(--fg-2);padding:6px 0;border-bottom:2px solid transparent}
.nav>a:hover{color:var(--fg)}
.nav>a.active{color:var(--accent);border-color:var(--accent)}
.nav-cta{display:flex;gap:10px;margin-left:10px}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;width:42px;height:40px;padding:10px;cursor:pointer}
.menu-btn span{display:block;height:2px;background:var(--fg);margin:4px 0;border-radius:2px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:8px;font-weight:600;font-size:.92rem;border:1px solid transparent;transition:.15s;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{background:var(--accent-2)}
.btn-ghost{border-color:#3a557d;color:var(--fg)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.nav-cta .btn{padding:8px 14px;font-size:.85rem}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:8px}
.ico{width:22px;height:22px;flex:none}.ico.sm{width:16px;height:16px}
.ico.box{width:42px;height:42px;padding:10px;border-radius:10px;background:rgba(0,184,217,.12);color:var(--accent);margin-bottom:14px}
.link{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:.9rem}
.link:hover{color:var(--accent-2)}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--fg-2);font-size:.9rem;margin-top:18px}
.text-link:hover{color:var(--accent)}

/* hero */
.hero{padding:88px 0 80px;background:radial-gradient(900px 500px at 80% 10%,rgba(0,184,217,.12),transparent 60%),linear-gradient(180deg,#0b1a31,var(--bg))}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
.eyebrow{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.eyebrow.dot{padding:6px 12px;border:1px solid rgba(0,184,217,.35);border-radius:999px;background:rgba(0,184,217,.08)}
.eyebrow.dot:before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:8px;vertical-align:middle}
.lead{font-size:1.08rem;color:var(--fg-2)}
.eco{background:linear-gradient(180deg,#0f2342,#0b1b33);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.eco-top,.eco-foot{display:flex;justify-content:space-between;gap:10px;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-3)}
.live{color:var(--ok)}.live:before{content:"● "}
.eco-core{margin:22px auto;width:max-content;padding:10px 18px;border:1px solid var(--accent);border-radius:8px;color:var(--accent);font-weight:700;background:rgba(0,184,217,.08)}
.eco-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.eco-node{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;padding:14px 8px;border:1px solid var(--line);border-radius:10px;background:var(--bg-3);font-size:.78rem;font-weight:600;color:var(--fg)}
.eco-node .ico{color:var(--accent)}
.eco-foot{margin-top:18px;text-transform:none;letter-spacing:0;font-size:.75rem}
.udemy{color:var(--accent-ink);background:var(--accent);padding:2px 8px;border-radius:5px;margin-left:4px}
.strip{background:#07111f;border-block:1px solid var(--line)}
.strip .wrap{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 34px;padding:16px 20px;font-size:.72rem;font-weight:700;letter-spacing:.16em;color:var(--fg-3)}

/* sections */
.section{padding:84px 0}
.section.alt{background:var(--bg-2)}
.head{max-width:640px;margin-bottom:34px}
.h2{margin-bottom:28px}.head .h2{margin-bottom:12px}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:.2s}
.card p{font-size:.92rem;margin-bottom:0}
a.card:hover,.card.course:hover{border-color:rgba(0,184,217,.55);transform:translateY(-2px)}
.card-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);margin-top:18px}
.card.course .card-foot{margin-top:auto}
.card.course p{margin-bottom:18px}
.card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.tag{align-self:flex-start;font-size:.72rem;font-weight:600;color:var(--accent);background:rgba(0,184,217,.12);padding:4px 10px;border-radius:999px;margin-bottom:14px}
.pill{flex:none;font-size:.7rem;font-weight:600;padding:3px 9px;border-radius:999px}
.pill.ok{color:#86efac;background:rgba(34,197,94,.12)}
.pill.soon{color:var(--fg-3);background:rgba(127,147,178,.14)}
.muted-sm{font-size:.82rem;color:var(--fg-3)}
.disclaimer,.note{font-size:.8rem;color:var(--fg-3);margin-top:22px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-top:2px solid var(--accent);border-radius:var(--r);overflow:hidden;background:var(--bg)}
.step{padding:26px 22px;border-right:1px solid var(--line)}.step:last-child{border-right:0}
.step .num{display:block;font-size:1.6rem;font-weight:800;color:#1f5a7a;margin-bottom:8px}
.step p{font-size:.9rem;margin:0}
.inline-cta{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:22px;padding:22px 24px;border:1px solid var(--line);border-radius:var(--r);background:var(--card)}
.inline-cta h3{margin:0 0 4px}.inline-cta p{margin:0;font-size:.9rem}
.inline-cta.big{padding:40px;background:linear-gradient(120deg,#0f2748,#0b1b33);border-color:rgba(0,184,217,.35)}
.inline-cta.big h2{margin-bottom:8px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.checks{list-style:none;margin:0 0 14px;padding:0;display:grid;gap:12px}
.checks li{display:flex;gap:10px;align-items:center;color:var(--fg)}
.checks .ico{color:var(--accent)}
.feature h3{margin-top:4px}.feature p{font-size:.92rem}
.instructor{display:grid;grid-template-columns:200px 1fr;gap:48px;align-items:center}
.avatar{width:200px;height:200px;border-radius:50%;display:grid;place-items:center;font-size:3.6rem;font-weight:800;color:var(--accent);background:radial-gradient(circle at 30% 30%,#17365f,#0a1628);border:2px solid rgba(0,184,217,.5);box-shadow:0 0 0 10px rgba(0,184,217,.06)}
.role{color:var(--accent);font-weight:600}
.faq{display:grid;gap:10px}
.faq details{border:1px solid var(--line);border-radius:10px;background:var(--card)}
.faq summary{cursor:pointer;list-style:none;padding:18px 52px 18px 20px;font-weight:600;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);color:var(--accent);font-size:1.4rem;font-weight:400}
.faq details[open] summary:after{content:"−"}
.faq details p{padding:0 20px 18px;margin:0}
.contact-card{display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap;padding:36px;border:1px solid var(--line);border-radius:16px;background:var(--card)}
.contact-card p{margin:0;max-width:560px}
.cta-band{display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap;padding:48px;border-radius:18px;background:linear-gradient(120deg,rgba(0,184,217,.18),rgba(19,42,74,.6));border:1px solid rgba(0,184,217,.35)}
.cta-band p{margin:0;max-width:600px}
.page-hero{padding:80px 0 56px;background:radial-gradient(800px 400px at 85% 0,rgba(0,184,217,.12),transparent 60%),var(--bg-2);border-bottom:1px solid var(--line)}
.page-hero .lead{max-width:720px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.chip{font:inherit;font-size:.85rem;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--fg-2);cursor:pointer}
.chip.on,.chip:hover{border-color:var(--accent);color:var(--accent)}
.card.course.hide{display:none}
.tech{display:flex;flex-wrap:wrap;gap:10px}
.tech span{padding:9px 16px;border:1px solid var(--line);border-radius:999px;background:var(--card);font-size:.88rem;color:var(--fg)}
.form{gap:14px}
.form label{display:grid;gap:6px;font-size:.85rem;font-weight:600;color:var(--fg-2)}
.form input,.form textarea{font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:11px 12px}
.form input:focus,.form textarea:focus{border-color:var(--accent);outline:none}
.form .btn{justify-content:center}

/* footer */
.site-footer{background:#07111f;border-top:1px solid var(--line);padding:56px 0 24px}
.foot{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.foot-brand p{font-size:.9rem;max-width:380px;margin-top:12px}
.foot-col{display:grid;gap:8px;align-content:start;font-size:.9rem}
.foot-col h3{font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;color:var(--fg-3)}
.foot-col a{color:var(--fg-2);word-break:break-word}.foot-col a:hover{color:var(--accent)}
.foot-base{margin-top:36px;padding-top:20px;border-top:1px solid var(--line)}
.foot-base p{font-size:.78rem;color:var(--fg-3);margin:0 0 6px}

@media (max-width:1060px){
  .menu-btn{display:block}
  .nav{position:fixed;inset:68px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;background:#081222;border-bottom:1px solid var(--line);padding:8px 20px 20px;display:none;max-height:calc(100vh - 68px);overflow:auto}
  .nav.open{display:flex}
  .nav>a{padding:13px 0;border-bottom:1px solid var(--line)}
  .nav>a.active{border-bottom-color:var(--line)}
  .nav-cta{margin:16px 0 0}
  .g4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .hero-grid,.split,.instructor{grid-template-columns:1fr}
  .g3{grid-template-columns:1fr 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)}
  .foot{grid-template-columns:1fr 1fr}.foot-brand{grid-column:1/-1}
  .avatar{width:140px;height:140px;font-size:2.6rem}
}
@media (max-width:560px){
  .section{padding:60px 0}.hero{padding:56px 0}
  .g3,.g4,.steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}
  .eco-grid{grid-template-columns:1fr 1fr}
  .inline-cta,.cta-band,.contact-card{flex-direction:column;align-items:flex-start;padding:26px}
  .foot{grid-template-columns:1fr}
  .nav-cta{flex-direction:column}.nav-cta .btn{justify-content:center}
  .eco-foot{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.badge{flex:none;font-size:.7rem;font-weight:700;color:#3b2f00;background:#f5c542;padding:3px 9px;border-radius:6px;height:max-content}
.card.course h3 a:hover{color:var(--accent)}
.card.course .card-top{margin-bottom:0}
.btn-sm{padding:9px 16px;font-size:.85rem}

.logo span{letter-spacing:-.02em}.logo b{color:#1ec8ea;font-weight:700}
.logo-mark{width:34px;height:34px}
.hero-art{margin:0;position:relative;border-radius:18px;overflow:hidden;border:1px solid rgba(0,184,217,.35);box-shadow:0 30px 80px rgba(0,0,0,.45),0 0 60px rgba(0,184,217,.12)}
.hero-art img{display:block;width:100%;height:auto;aspect-ratio:594/600;object-fit:cover}
.hero-art figcaption{position:absolute;left:0;right:0;bottom:0;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:14px 16px;font-size:.78rem;color:var(--fg-2);background:linear-gradient(0deg,rgba(6,14,28,.92),rgba(6,14,28,0))}