:root{
  --bg:#0a0a0f; --bg2:#0f0f17; --card:#15151e; --card2:#1b1b26;
  --border:#262633; --text:#eaeaef; --muted:#9a9aae; --muted2:#66667a;
  --green:#059669; --teal:#0ea5e9; --accent:#10b981; --grad:linear-gradient(135deg,#059669,#0ea5e9);
  --radius:16px; --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,10,15,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.3px}
.brand img{height:34px;width:auto}
.nav{display:flex;gap:6px;align-items:center}
.nav a{color:var(--muted);font-weight:600;font-size:14px;padding:8px 12px;border-radius:9px;transition:.2s}
.nav a:hover{color:var(--text);background:var(--card)}
.nav a.active{color:var(--green);background:rgba(5,150,105,.1)}
.btn{display:inline-block;background:var(--grad);color:#fff;font-weight:700;padding:12px 24px;border-radius:11px;font-size:14.5px;transition:.2s;white-space:nowrap;border:0;cursor:pointer}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,165,233,.3)}
.btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn.sm{font-size:13px;padding:8px 14px}
.menu-btn{display:none;background:none;border:0;color:var(--text);font-size:26px;cursor:pointer}

/* Hero */
.hero{padding:92px 0 70px;background:radial-gradient(960px 420px at 50% -10%,rgba(14,165,233,.13),transparent)}
.hero h1{font-size:clamp(33px,5.2vw,56px);font-weight:850;letter-spacing:-1.2px;line-height:1.08;max-width:840px}
.hero .lead{color:var(--muted);font-size:18px;max-width:660px;margin:20px 0 30px}
.hero-badge{display:inline-block;background:rgba(16,185,129,.12);color:var(--accent);border:1px solid rgba(16,185,129,.3);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;padding:6px 14px;border-radius:999px;margin-bottom:20px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:52px}
.stats div{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-align:center}
.stats b{display:block;font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stats span{color:var(--muted);font-size:13px;margin-top:4px}

/* Sections */
.section{padding:64px 0}
.sec-title{font-size:26px;margin-bottom:6px}
.page-title{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-.6px;margin:14px 0 8px;line-height:1.1}
.lead{color:var(--muted);font-size:16px;max-width:680px}
.back{color:var(--green);font-size:14px;font-weight:600}

/* Program grid */
.prog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px;margin-top:20px}
.prog-card{display:block;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px;transition:.2s}
.prog-card:hover{border-color:var(--green);transform:translateY(-3px);box-shadow:0 12px 32px rgba(5,150,105,.16)}
.pc-f{display:inline-block;font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--green);background:rgba(5,150,105,.12);padding:3px 9px;border-radius:20px;margin-bottom:8px}
.prog-card h3{font-size:17px;margin:4px 0 8px}
.prog-card p{color:var(--muted);font-size:13.5px;line-height:1.5}
.pc-meta{display:block;margin-top:12px;font-size:12px;color:var(--muted2)}

/* Chips / fields */
.field-block{margin:26px 0}
.field-block h3{font-size:20px;margin-bottom:4px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
.chip{background:var(--card2);border:1px solid var(--border);color:var(--text);padding:8px 14px;border-radius:20px;font-size:13.5px;transition:.2s}
.chip:hover{border-color:var(--green);color:var(--green)}
.chip.sm{font-size:12px;padding:5px 10px}

/* Program detail head */
.pg-head{display:flex;gap:24px;flex-wrap:wrap;margin-bottom:18px}
.pg-meta{display:flex;gap:16px;align-items:center;margin-top:14px;color:var(--muted);font-size:14px;flex-wrap:wrap}

/* Modules / lessons */
.modules{margin-top:22px;display:flex;flex-direction:column;gap:22px}
.module{background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden}
.module-h{display:flex;gap:14px;align-items:center;padding:18px 20px;background:linear-gradient(90deg,rgba(5,150,105,.08),transparent);border-bottom:1px solid var(--border)}
.mnum{width:38px;height:38px;flex:0 0 38px;border-radius:10px;background:var(--green);color:#fff;display:grid;place-items:center;font-weight:700;font-size:18px}
.module-h h3{font-size:18px}
.lessons{padding:8px 20px 18px}
.lesson{border-left:3px solid var(--border);padding:14px 0 14px 18px;margin:14px 0}
.lesson-h{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.lesson h4{font-size:16px}
.lvl{font-size:10.5px;font-weight:700;text-transform:uppercase;padding:3px 8px;border-radius:6px;letter-spacing:.4px}
.lvl.beginner{background:rgba(16,185,129,.15);color:#34d399}
.lvl.intermediate{background:rgba(14,165,233,.15);color:#38bdf8}
.lvl.advanced{background:rgba(168,85,247,.15);color:#c084fc}
.lvl.professional{background:rgba(245,158,11,.15);color:#fbbf24}
.obj{color:var(--text);font-size:14px;margin:8px 0}
.lab{background:rgba(14,165,233,.08);border:1px solid rgba(14,165,233,.2);border-radius:10px;padding:10px 12px;font-size:13.5px;margin:10px 0;color:#bfe6ff}
.res{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-direction:column;gap:5px}
.res li a{color:var(--teal);font-size:13px;text-decoration:none}
.res li a:hover{text-decoration:underline}
.track-note{background:linear-gradient(90deg,rgba(5,150,105,.12),rgba(14,165,233,.08));border:1px solid var(--border);border-radius:12px;padding:14px 18px;font-size:14px;margin:18px 0;color:var(--text)}

/* Campus / about cards */
.campus-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.campus-card h3{font-size:18px;margin-bottom:6px}
.campus-card p{color:var(--muted);margin-top:8px}
.about-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:18px}
.about-list{padding-left:20px;line-height:1.9;color:var(--muted)}
.about-list li{margin:6px 0}
.cta-band{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;background:linear-gradient(90deg,var(--card2),var(--card));border:1px solid var(--border);border-radius:16px;padding:24px}
.cta-band h3{font-size:20px}

/* Footer */
.site-footer{background:var(--bg2);border-top:1px solid var(--border);padding:50px 0 24px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
.footer-grid h4{font-size:15px;margin-bottom:14px}
.footer-grid a,.footer-grid span{display:block;color:var(--muted);font-size:14px;margin:8px 0;transition:.2s}
.footer-grid a:hover{color:var(--text)}

/* ===== Floating tutor widget ===== */
#cliai-chat{position:fixed;right:20px;bottom:20px;width:368px;max-width:calc(100vw - 32px);height:540px;max-height:calc(100vh - 110px);background:var(--bg2);border:1px solid var(--border);border-radius:16px;box-shadow:0 22px 64px rgba(0,0,0,.55);display:flex;flex-direction:column;z-index:9999;overflow:hidden}
#cliai-chat.chat-hidden{display:none}
.chat-head{background:linear-gradient(90deg,var(--green),var(--teal));color:#fff;padding:14px 16px;display:flex;justify-content:space-between;align-items:center}
.chat-head b{font-size:15px}
.chat-head .dot{width:8px;height:8px;border-radius:50%;background:#a7f3d0;display:inline-block;margin-right:6px;animation:pulse 2s infinite}
.chat-head button{background:transparent;border:0;color:#fff;font-size:18px;cursor:pointer;line-height:1}
#chatBody{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
#chatBody .msg{max-width:86%;padding:9px 13px;border-radius:12px;font-size:13.5px;line-height:1.5;white-space:pre-wrap;word-break:break-word}
#chatBody .msg.user{background:var(--green);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
#chatBody .msg.bot{background:var(--card);border:1px solid var(--border);align-self:flex-start;border-bottom-left-radius:4px}
.chat-input{display:flex;gap:8px;padding:12px;border-top:1px solid var(--border)}
.chat-input input{flex:1;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:10px 12px;color:var(--text);font-size:13.5px;outline:none}
.chat-input input:focus{border-color:var(--green)}
.chat-input button{background:var(--green);border:0;color:#fff;border-radius:10px;padding:0 16px;font-weight:600;cursor:pointer}
.chat-fab{position:fixed;right:20px;bottom:20px;width:62px;height:62px;border-radius:50%;background:linear-gradient(135deg,var(--green),var(--teal));border:0;color:#fff;font-size:26px;cursor:pointer;box-shadow:0 10px 30px rgba(5,150,105,.4);z-index:9998;display:none}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* key topics + careers */
.infobox{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0}
.ibo{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.ibo h4{margin:0 0 12px;color:var(--text);font-size:15px}
.topics{display:flex;flex-wrap:wrap;gap:8px}
.topic{background:var(--card2);border:1px solid var(--border);border-radius:20px;padding:6px 13px;font-size:13px;color:var(--muted)}
ul.careers{margin:0;padding-left:18px;color:var(--muted)}
ul.careers li{margin:7px 0}
.check{background:rgba(16,185,129,.08);border:1px solid rgba(16,185,129,.25);border-radius:10px;padding:10px 13px;margin-top:10px;font-size:14px;color:var(--text)}
.check b{color:var(--accent)}

/* feature grid */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:8px}
.feat{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:22px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.feat:hover{transform:translateY(-4px);border-color:var(--green);box-shadow:0 12px 30px rgba(5,150,105,.12)}
.feat-ic{font-size:30px;margin-bottom:10px}
.feat h4{font-size:16px;margin-bottom:8px}
.feat p{color:var(--muted);font-size:14px;line-height:1.6}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(max-width:900px){.feat-grid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.feat-grid{grid-template-columns:1fr}}

/* Responsive */
@media(max-width:900px){.stats{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.infobox{grid-template-columns:1fr}}
@media(max-width:680px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg2);flex-direction:column;padding:16px 20px;gap:6px;border-bottom:1px solid var(--border)}
  .nav.open{display:flex}
  .stats{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero{padding:60px 0 50px}
  .section{padding:48px 0}
  #cliai-chat{right:8px;bottom:8px;width:calc(100vw - 16px)}
}