:root{
  --bg:#05070d;
  --bg-alt:#0a0e18;
  --panel:#0f1420;
  --line:#1c2333;
  --text:#e8ecf5;
  --muted:#8b93a7;
  --accent:#00e0ff;
  --accent2:#ffb020;
  --accent3:#00ffa3;
  --radius:14px;
  --maxw:1180px;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',sans-serif;
  overflow-x:hidden;
  position:relative;
}
h1,h2,h3,h4{font-family:'Space Grotesk',sans-serif;}
a{color:inherit; text-decoration:none;}

#grid-canvas{
  position:fixed; top:0; left:0; width:100%; height:100%;
  z-index:0; opacity:0.35; pointer-events:none;
}

.navbar{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(5,7,13,0.85); backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--maxw); margin:0 auto; padding:16px 24px;
  display:flex; align-items:center; justify-content:space-between;
}
.logo{font-weight:700; font-size:1.15rem; letter-spacing:1px;}
.logo span{color:var(--accent);}
.nav-links{display:flex; align-items:center; gap:28px; font-size:0.92rem;}
.nav-links a{color:var(--muted); transition:color .2s;}
.nav-links a:hover{color:var(--accent);}
.nav-cta{
  background:var(--accent); color:#05070d !important;
  padding:8px 18px; border-radius:999px; font-weight:600;
}
.dropdown{position:relative; cursor:pointer; color:var(--muted);}
.dropdown-menu{
  position:absolute; top:130%; left:0; background:var(--panel);
  border:1px solid var(--line); border-radius:10px; padding:8px;
  display:none; min-width:200px; flex-direction:column;
}
.dropdown:hover .dropdown-menu{display:flex;}
.dropdown-menu a{padding:8px 12px; border-radius:6px; color:var(--muted);}
.dropdown-menu a:hover{background:var(--bg-alt); color:var(--accent);}
.hamburger{display:none; background:none; border:none; color:var(--text); font-size:1.5rem;}

.hero{
  position:relative; z-index:1;
  min-height:100vh; display:flex; align-items:center; justify-content:space-between;
  max-width:var(--maxw); margin:0 auto; padding:140px 24px 80px; gap:40px; flex-wrap:wrap;
}
.hero-content{flex:1; min-width:320px;}
.hero-kicker{color:var(--accent); font-size:0.85rem; letter-spacing:2px; text-transform:uppercase; margin-bottom:14px;}
.hero h1{font-size:clamp(2.6rem,6vw,4.2rem); font-weight:700; line-height:1.05; margin-bottom:12px;}
.hero-tagline{font-size:1.15rem; color:var(--text); margin-bottom:18px;}
.hero-tagline span{color:var(--accent2);}
.hero-sub{color:var(--muted); max-width:560px; line-height:1.6; margin-bottom:32px;}
.hero-buttons{display:flex; gap:14px; flex-wrap:wrap; margin-bottom:48px;}
.btn{padding:12px 26px; border-radius:999px; font-weight:600; font-size:0.9rem; transition:.2s;}
.btn-primary{background:var(--accent); color:#05070d;}
.btn-primary:hover{background:#33e8ff;}
.btn-outline{border:1px solid var(--line); color:var(--text);}
.btn-outline:hover{border-color:var(--accent); color:var(--accent);}
.hero-stats{display:flex; gap:36px; flex-wrap:wrap;}
.hero-stats div{display:flex; flex-direction:column;}
.hero-stats strong{font-size:1.5rem; color:var(--accent3);}
.hero-stats span{color:var(--muted); font-size:0.8rem;}
.hero-photo{flex:0 0 300px; display:flex; justify-content:center;}
.hero-photo img{
  width:280px; height:280px; object-fit:cover; border-radius:50%;
  border:3px solid var(--accent); box-shadow:0 0 60px rgba(0,224,255,0.25);
}
.scroll-cue{
  position:absolute; bottom:24px; left:50%; transform:translateX(-50%);
  color:var(--muted); font-size:0.8rem; animation:bounce 2s infinite;
}
@keyframes bounce{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,8px);}}

.section{
  position:relative; z-index:1; max-width:var(--maxw); margin:0 auto;
  padding:90px 24px;
}
.section-title{font-size:2rem; font-weight:700; margin-bottom:10px;}
.section-lede{color:var(--muted); margin-bottom:40px; max-width:640px;}
.sub-title{font-size:1.3rem; margin:36px 0 18px;}

.flow-track{display:flex; align-items:stretch; gap:12px; flex-wrap:wrap;}
.flow-node{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:26px 20px; flex:1; min-width:200px;
}
.flow-icon{font-size:1.6rem; display:block; margin-bottom:12px;}
.flow-node h3{font-size:1rem; margin-bottom:8px;}
.flow-node p{color:var(--muted); font-size:0.85rem; line-height:1.5;}
.flow-arrow{display:flex; align-items:center; color:var(--accent); font-size:1.4rem;}

.timeline{position:relative; padding-left:32px; border-left:2px solid var(--line);}
.tl-item{position:relative; margin-bottom:44px;}
.tl-dot{
  position:absolute; left:-40px; top:4px; width:14px; height:14px; border-radius:50%;
  background:var(--accent); box-shadow:0 0 12px var(--accent);
}
.tl-year{color:var(--accent2); font-size:0.8rem; font-weight:600; letter-spacing:1px;}
.tl-content h3{margin:6px 0; font-size:1.15rem;}
.tl-content p{color:var(--muted); max-width:640px; line-height:1.6;}

.card-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:18px;}
.expertise-card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:26px; transition:.25s;
}
.expertise-card:hover{border-color:var(--accent); transform:translateY(-4px);}
.expertise-card span{font-size:1.6rem; display:block; margin-bottom:12px;}
.expertise-card h3{font-size:1rem; margin-bottom:8px;}
.expertise-card p{color:var(--muted); font-size:0.85rem; line-height:1.5;}

.rlc-header{display:flex; align-items:center; gap:18px; margin-bottom:10px;}
.rlc-logo{height:38px;}
.rlc-impact{display:flex; gap:32px; flex-wrap:wrap; margin:30px 0 10px; padding:24px; background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);}
.rlc-impact div{display:flex; flex-direction:column;}
.rlc-impact strong{color:var(--accent); font-size:1.4rem;}
.rlc-impact span{color:var(--muted); font-size:0.78rem;}
.course-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px;}
.course-tile{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:22px; transition:.2s; position:relative;
}
.course-tile:hover{border-color:var(--accent2);}
.course-tile h4{margin-bottom:6px; font-size:1rem;}
.course-tile p{color:var(--muted); font-size:0.82rem;}
.tile-badge{
  display:inline-block; background:var(--accent2); color:#05070d;
  font-size:0.7rem; font-weight:700; padding:3px 10px; border-radius:999px;
  margin-bottom:10px;
}
.tile-badge.tile-offer{background:var(--accent3);}

.yt-filters{display:flex; gap:10px; flex-wrap:wrap; margin-bottom:24px;}
.yt-filter-btn{
  background:var(--panel); border:1px solid var(--line); color:var(--muted);
  padding:8px 18px; border-radius:999px; font-size:0.85rem; cursor:pointer; transition:.2s;
}
.yt-filter-btn:hover{border-color:var(--accent);}
.yt-filter-btn.active{background:var(--accent); color:#05070d; border-color:var(--accent); font-weight:600;}
.yt-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:20px;}
.yt-card{background:var(--panel); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; transition:.2s; display:block;}
.yt-card:hover{border-color:var(--accent); transform:translateY(-4px);}
.yt-thumb-placeholder{
  aspect-ratio:16/9; background:linear-gradient(135deg,#111827,#1c2333);
  display:flex; align-items:center; justify-content:center; font-size:2rem; color:var(--accent);
}
.yt-thumb-wrap{position:relative; aspect-ratio:16/9; overflow:hidden; background:#111827;}
.yt-thumb-wrap img{width:100%; height:100%; object-fit:cover; display:block;}
.yt-play{
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
  background:rgba(0,0,0,0.55); color:var(--accent); width:44px; height:44px;
  border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-size:1.1rem; opacity:0; transition:.2s;
}
.yt-card:hover .yt-play{opacity:1;}
.yt-channel-tag{
  position:absolute; bottom:8px; left:8px; background:rgba(0,0,0,0.65);
  color:var(--accent3); font-size:0.68rem; padding:3px 9px; border-radius:999px;
}
.yt-meta{padding:16px;}
.yt-meta h4{font-size:0.92rem; margin-bottom:10px;}
.yt-stats{display:flex; gap:14px; flex-wrap:wrap; color:var(--muted); font-size:0.78rem;}

.tools.alt{background:var(--bg-alt);}
.tool-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:14px;}
.tool-tile{
  background:var(--panel); border:1px solid var(--line); border-radius:10px;
  padding:20px; text-align:center; font-weight:500; transition:.2s;
}
.tool-tile:hover{border-color:var(--accent3); color:var(--accent3);}

.tag-grid{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:18px;}
.tag{
  background:var(--panel); border:1px solid var(--line); padding:8px 18px;
  border-radius:999px; font-size:0.85rem; color:var(--muted);
}

.pub-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(160px,1fr)); gap:14px;}
.pub-card{
  background:var(--panel); border:1px solid var(--line); border-radius:10px;
  padding:24px; text-align:center; color:var(--muted);
}

.project-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:20px;}
.project-card{background:var(--panel); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;}
.project-card img{width:100%; height:160px; object-fit:cover;}
.project-card h4,.project-card p{padding:0 18px;}
.project-card h4{margin-top:16px; font-size:1rem;}
.project-card p{color:var(--muted); font-size:0.85rem; padding-bottom:18px; margin-top:6px;}
.project-card.no-img{padding-top:18px;}

.empty-state{
  background:var(--panel); border:1px dashed var(--line); border-radius:var(--radius);
  padding:40px; text-align:center; color:var(--muted);
}
.empty-state p{margin-bottom:16px;}

.contact-links{display:flex; gap:20px; flex-wrap:wrap;}
.contact-links a{
  background:var(--panel); border:1px solid var(--line); padding:14px 24px;
  border-radius:10px; font-weight:500; transition:.2s;
}
.contact-links a:hover{border-color:var(--accent); color:var(--accent);}

.footer{
  position:relative; z-index:1; border-top:1px solid var(--line);
  padding:32px 24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:16px;
  max-width:var(--maxw); margin:0 auto; color:var(--muted); font-size:0.85rem;
}
.footer-links{display:flex; gap:20px;}
.footer-links a:hover{color:var(--accent);}

@media(max-width:860px){
  .nav-links{display:none;}
  .hamburger{display:block;}
  .hero{flex-direction:column-reverse; text-align:center; padding-top:120px;}
  .hero-buttons,.hero-stats{justify-content:center;}
  .hero-sub{margin-left:auto; margin-right:auto;}
  .flow-track{flex-direction:column;}
  .flow-arrow{transform:rotate(90deg); justify-content:center;}
}