:root{
  --bg:#0b0f14;
  --bg2:#0f1621;
  --card:#111a26;
  --text:#e9eef7;
  --muted:#a9b7cc;
  --line:#223149;
  --accent:#6ae4ff;
  --accent2:#b18cff;
  --good:#53f3a6;
  --bad:#ff6b6b;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
a{color:inherit;text-decoration:none}
a:hover{opacity:.9}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}

.container{max-width:1100px;margin:0 auto;padding:0 18px}

.topbar{
  position:sticky;top:0;z-index:50;
  backdrop-filter: blur(10px);
  background: rgba(11,15,20,.75);
  border-bottom:1px solid rgba(34,49,73,.6);
}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px}
.brand__logo{
  width:36px;
  height:36px;
  border-radius:10px;
  object-fit:cover;
}
.brand__name{font-weight:800;letter-spacing:.2px}
.brand__tag{font-size:12px;color:var(--muted);margin-top:2px}

.nav{display:none;gap:16px}
.nav a{color:var(--muted);font-size:14px}
.nav a:hover{color:var(--text)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 14px;border-radius:12px;
  border:1px solid rgba(34,49,73,.8);
  font-weight:700;font-size:14px;
  background: transparent;
}
.btn--primary{
  border:none;
  color:#061018;
  background: linear-gradient(135deg,var(--accent),var(--accent2));
}
.btn--ghost{color:var(--text);background: rgba(17,26,38,.35)}
.btn--ghost:hover{border-color:rgba(106,228,255,.55)}

.hero{
  padding:52px 0 22px;
  background:
    radial-gradient(800px 400px at 20% 0%, rgba(106,228,255,.18), transparent 60%),
    radial-gradient(700px 380px at 80% 10%, rgba(177,140,255,.18), transparent 60%);
}
.hero__grid{display:grid;grid-template-columns:1fr;gap:18px}
.hero h1{
  margin:0;
  font-size:34px;
  line-height:1.15;
  letter-spacing:-.3px;
}
.quote{
  display:inline-block;
  padding:2px 8px;
  border-radius:10px;
  background: rgba(17,26,38,.55);
  border: 1px solid rgba(34,49,73,.7);
}
.lede{color:var(--muted);font-size:16px;line-height:1.6;margin:16px 0 18px}
.hero__cta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.pillrow{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.pill{
  font-size:12px;color:var(--muted);
  border:1px solid rgba(34,49,73,.7);
  background: rgba(17,26,38,.35);
  padding:6px 10px;border-radius:999px;
}

.panel{
  background: linear-gradient(180deg, rgba(17,26,38,.65), rgba(17,26,38,.35));
  border:1px solid rgba(34,49,73,.7);
  border-radius:16px;
  box-shadow: var(--shadow);
  padding:18px;
}
.panel__title{font-weight:800;margin-bottom:10px}
.panel__list{margin:0;padding-left:18px;color:var(--muted);line-height:1.7}
.panel__note{margin-top:12px;color:var(--text);opacity:.9;font-weight:650}

.section{padding:44px 0}
.section--alt{background: linear-gradient(180deg, rgba(15,22,33,.45), transparent 70%)}
h2{margin:0 0 14px;font-size:26px;letter-spacing:-.2px}
h3{margin:0 0 10px;font-size:17px}
p{margin:0 0 12px;line-height:1.7;color:var(--muted)}
strong{color:var(--text)}

.twoCol{display:grid;grid-template-columns:1fr;gap:16px}
.card{
  background: rgba(17,26,38,.35);
  border:1px solid rgba(34,49,73,.7);
  border-radius:16px;
  padding:18px;
}
.big{font-size:15px;color:var(--text);opacity:.95}
.muted{color:var(--muted)}
.small{font-size:12.5px}

.grid3{display:grid;grid-template-columns:1fr;gap:12px;margin-top:14px}

.codecard{
  margin-top:16px;
  border-radius:16px;
  overflow:hidden;
  border:1px solid rgba(34,49,73,.7);
  background: rgba(10,14,20,.7);
}
.codecard__top{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;
  border-bottom:1px solid rgba(34,49,73,.7);
  background: rgba(17,26,38,.35);
}
.codecard__title{font-weight:800}
.codecard__hint{color:var(--muted);font-size:12px}
pre{
  margin:0;
  padding:14px;
  overflow:auto;
  color:#d8e6ff;
  line-height:1.6;
  font-size:12.8px;
}

.checklist{margin:0;padding-left:18px;color:var(--muted);line-height:1.75}
.checklist--x li{list-style:none;position:relative;padding-left:18px}
.checklist--x li::before{
  content:"×";position:absolute;left:0;color:var(--bad);font-weight:900;
}

.ctaCard{
  display:grid;grid-template-columns:1fr;gap:14px;
  background: rgba(17,26,38,.35);
  border:1px solid rgba(34,49,73,.7);
  border-radius:18px;
  padding:18px;
}
.ctaCard__bullets{
  margin:12px 0 14px;
  display:grid;gap:8px;
  color:var(--muted);
}
.ctaRow{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}
.sideBox{
  border:1px solid rgba(34,49,73,.7);
  border-radius:16px;
  padding:16px;
  background: rgba(10,14,20,.45);
}
.sideBox__title{font-weight:900;margin-bottom:8px}
.sideBox__note{margin-top:10px;color:var(--text);opacity:.85;font-weight:650}

.licenseCard{
  border:1px solid rgba(34,49,73,.7);
  background: rgba(17,26,38,.25);
  border-radius:16px;
  padding:18px;
}

.footer{
  padding:26px 0;
  border-top:1px solid rgba(34,49,73,.6);
  background: rgba(10,14,20,.35);
}
.footer__inner{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;flex-wrap:wrap}
.footer__brand{font-weight:900}
.footer__links{display:flex;gap:14px;flex-wrap:wrap}
.footer__links a{color:var(--muted);font-size:13px}
.footer__links a:hover{color:var(--text)}

.videoCard{
  border:1px solid rgba(34,49,73,.7);
  background: rgba(17,26,38,.35);
  border-radius:18px;
  padding:18px;
}

.videoCard__title{
  font-weight:800;
  margin-bottom:10px;
}

.videoLink{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  padding:20px;
}

.videoLink__button{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 24px;
  border-radius:12px;
  background: linear-gradient(135deg,var(--accent),var(--accent2));
  color:#061018;
  font-weight:700;
  font-size:15px;
  border:none;
  text-decoration:none;
  transition:opacity 0.2s;
}

.videoLink__button:hover{
  opacity:0.9;
}

.videoLink__icon{
  font-size:18px;
}

.videoLink__url{
  margin-top:4px;
}

.videoLink__url code{
  font-size:11px;
  color:var(--muted);
  background:rgba(17,26,38,.35);
  padding:6px 10px;
  border-radius:6px;
  border:1px solid rgba(34,49,73,.5);
  word-break:break-all;
}

.videoCard__note{
  margin-top:10px;
  font-size:13px;
  color:var(--muted);
}

@media (min-width: 860px){
  .nav{display:flex}
  .hero__grid{grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
  .twoCol{grid-template-columns:1fr 1fr}
  .grid3{grid-template-columns:repeat(3,1fr)}
  .ctaCard{grid-template-columns:1.2fr .8fr}
  .hero h1{font-size:40px}
}