:root{
  --bg:#07131a;
  --card:#0b1c26;
  --text:#e8f6ff;
  --muted:#9ec2d6;
  --brand:#21c7ff;
  --brand2:#22ffb0;
  --warn:#ffcc66;
  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --radius: 18px;
  --max: 1120px;
  --glass: rgba(255,255,255,.06);
  --border: rgba(255,255,255,.12);
  --focus: rgba(33,199,255,.35);
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 20% 10%, rgba(33,199,255,.18), transparent 60%),
    radial-gradient(1000px 700px at 80% 30%, rgba(34,255,176,.12), transparent 55%),
    radial-gradient(900px 600px at 50% 95%, rgba(255,204,102,.10), transparent 55%),
    linear-gradient(180deg, #040a0f 0%, var(--bg) 100%);
}

a{color:inherit; text-decoration:none}
a:hover{opacity:.92}
.container{max-width:var(--max); margin:0 auto; padding:0 18px}
.hidden{display:none !important}

.topbar{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(14px);
  background: rgba(5,10,15,.72);
  border-bottom: 1px solid var(--border);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
  gap:14px;
}
.brand{
  display:flex; align-items:center; gap:12px; min-width:220px;
}
.brand-logo{
  width:42px; height:42px; border-radius:14px;
  background: linear-gradient(135deg, rgba(33,199,255,.95), rgba(34,255,176,.85));
  box-shadow: 0 18px 45px rgba(33,199,255,.15);
  position:relative;
  overflow:hidden;
}
.brand-logo::after{
  content:"";
  position:absolute; inset:-40%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.55), transparent 45%);
  transform: rotate(18deg);
}
.brand-title{font-weight:800; letter-spacing:.2px}
.brand-sub{display:block; font-size:12px; color:var(--muted); margin-top:2px}

.menu{
  display:flex; align-items:center; gap:10px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.menu a{
  padding:10px 12px;
  border-radius:14px;
  border:1px solid transparent;
  color:var(--muted);
  transition: all .18s ease;
  font-weight:600;
  font-size:14px;
}
.menu a:hover{
  border-color: var(--border);
  background: rgba(255,255,255,.05);
  color: var(--text);
}

.cta{
  display:flex; align-items:center; gap:10px;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding:11px 14px;
  border-radius:16px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.05);
  color: var(--text);
  font-weight:800;
  box-shadow: 0 12px 35px rgba(0,0,0,.25);
  transition: transform .18s ease, background .18s ease;
  cursor:pointer;
}
.btn:hover{transform: translateY(-1px); background: rgba(255,255,255,.08)}
.btn.primary{
  border-color: rgba(33,199,255,.35);
  background: linear-gradient(135deg, rgba(33,199,255,.22), rgba(34,255,176,.16));
}
.btn.small{padding:9px 12px; font-size:13px}

.hero{
  padding:56px 0 18px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:18px;
  align-items:stretch;
}
@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr}
  .brand{min-width:auto}
}
.card{
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.card-inner{padding:22px}
.kicker{
  display:inline-flex; align-items:center; gap:10px;
  padding:8px 12px;
  border-radius:999px;
  background: rgba(33,199,255,.10);
  border:1px solid rgba(33,199,255,.18);
  color: var(--text);
  font-weight:800;
  font-size:13px;
}
.kicker .dot{
  width:10px; height:10px; border-radius:99px;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  box-shadow: 0 0 0 6px rgba(33,199,255,.12);
}
h1{
  font-size: clamp(30px, 3.6vw, 44px);
  line-height:1.05;
  margin:14px 0 10px;
  letter-spacing:-.5px;
}
.lead{color:var(--muted); font-size:16px; line-height:1.55; margin:0 0 16px}
.hero-actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:14px}

.stats{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
  margin-top:16px;
}
@media (max-width: 520px){
  .stats{grid-template-columns:1fr}
}
.stat{
  padding:14px;
  border-radius:16px;
  background: rgba(0,0,0,.20);
  border:1px solid rgba(255,255,255,.10);
}
.stat b{display:block; font-size:18px}
.stat span{color:var(--muted); font-size:12px}

.section{
  padding:18px 0 44px;
}
.section-title{
  display:flex; align-items:flex-end; justify-content:space-between;
  gap:12px; margin: 0 0 14px;
}
.section-title h2{
  margin:0;
  font-size:22px;
  letter-spacing:-.2px;
}
.section-title p{
  margin:0; color:var(--muted); font-size:13px
}

.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:14px;
}
.col-6{grid-column: span 6}
.col-4{grid-column: span 4}
.col-8{grid-column: span 8}
.col-12{grid-column: span 12}
@media (max-width: 980px){
  .col-6,.col-4,.col-8{grid-column: span 12}
}

.tile{
  position:relative;
  padding:18px;
  border-radius: var(--radius);
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  overflow:hidden;
  min-height:140px;
}
.tile::before{
  content:"";
  position:absolute; inset:-60px;
  background:
    radial-gradient(circle at 20% 20%, rgba(33,199,255,.22), transparent 40%),
    radial-gradient(circle at 80% 40%, rgba(34,255,176,.14), transparent 45%);
  transform: rotate(8deg);
}
.tile > *{position:relative}
.tile h3{margin:0 0 6px; font-size:18px}
.tile p{margin:0; color:var(--muted); line-height:1.45; font-size:14px}
.badge{
  display:inline-flex; align-items:center; gap:8px;
  padding:7px 10px;
  border-radius:999px;
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  color:var(--muted);
  font-weight:800;
  font-size:12px;
  margin-bottom:10px;
}

.banner{
  display:flex; align-items:center; justify-content:space-between;
  gap:12px;
  padding:16px 18px;
  border-radius: 18px;
  border:1px dashed rgba(255,255,255,.22);
  background: rgba(0,0,0,.18);
}
.banner strong{font-size:15px}
.banner span{display:block; color:var(--muted); font-size:12px; margin-top:2px}
.banner .btn{white-space:nowrap}

.article{
  line-height:1.7;
  color: var(--text);
}
.article p{color: var(--muted)}
.article h2,.article h3{color: var(--text)}
.article .meta{color: var(--muted); font-size:13px; margin-top:6px}
hr.sep{
  border:0; height:1px;
  background: rgba(255,255,255,.10);
  margin:16px 0;
}

.video-wrap{
  position:relative;
  width:100%;
  aspect-ratio: 16/9;
  border-radius: 18px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.35);
}
.video-wrap iframe{
  position:absolute; inset:0;
  width:100%; height:100%;
}

.footer{
  padding:26px 0 40px;
  color: var(--muted);
  font-size:13px;
}
.footer a{color: var(--text); font-weight:800}
.footer-grid{
  display:grid;
  grid-template-columns: 1.4fr .6fr;
  gap:12px;
  align-items:start;
}
@media (max-width: 980px){
  .footer-grid{grid-template-columns:1fr}
}

.chatdock{
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: min(420px, calc(100vw - 36px));
  z-index: 60;
}
.chatbtn{
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 61;
}
.chatpanel{
  border-radius: 22px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(10,18,24,.88);
  backdrop-filter: blur(16px);
  box-shadow: 0 30px 90px rgba(0,0,0,.55);
  overflow:hidden;
}
.chathead{
  display:flex; align-items:center; justify-content:space-between;
  gap:10px;
  padding:12px 14px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.chathead b{font-size:14px}
.chatbody{padding:12px 14px; color: var(--muted); font-size:13px; line-height:1.45}
.chatmsgs{
  max-height: 220px;
  overflow:auto;
  padding: 10px 0;
  border-top:1px solid rgba(255,255,255,.08);
  border-bottom:1px solid rgba(255,255,255,.08);
  margin: 10px 0;
}
.msg{
  padding:10px 12px;
  border-radius: 16px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
  margin: 8px 0;
}
.msg.me{border-color: rgba(33,199,255,.22)}
.msg.bot{border-color: rgba(34,255,176,.20)}
.chatform{
  display:flex; gap:10px;
}
.chatform input{
  flex:1;
  padding:12px 12px;
  border-radius: 16px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.25);
  color: var(--text);
  outline:none;
}
.chatform input:focus{box-shadow: 0 0 0 6px var(--focus)}
.toast{
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 18px;
  z-index: 80;
  padding: 10px 14px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.16);
  background: rgba(0,0,0,.55);
  color: var(--text);
  backdrop-filter: blur(10px);
  font-weight:800;
  font-size:13px;
  display:none;
}