:root{
  --bg:#07080b;
  --panel:#0f1218;
  --panel2:#0b0e13;
  --text:#e9edf5;
  --muted:#a9b2c3;
  --green:#35ff7a;
  --green2:#00d26a;
  --lime:#baff2d;
  --line:rgba(255,255,255,.08);
  --shadow: 0 14px 40px rgba(0,0,0,.55);
  --radius: 18px;
  --radius2: 26px;
  --max: 1120px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background:
    radial-gradient(1100px 500px at 70% -10%, rgba(53,255,122,.20), transparent 60%),
    radial-gradient(900px 500px at 10% 0%, rgba(186,255,45,.12), transparent 55%),
    radial-gradient(1200px 600px at 50% 110%, rgba(0,210,106,.10), transparent 60%),
    linear-gradient(180deg, #06070a, #05060a 55%, #04050a);
  color:var(--text);
}
a{color:inherit; text-decoration:none}
a:hover{opacity:.95}
img{max-width:100%; display:block}
.container{max-width:var(--max); margin:0 auto; padding:0 18px}
.nav{
  position:sticky; top:0; z-index:50;
  background: rgba(7,8,11,.72);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
  gap:14px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:800; letter-spacing:.2px;
}
.brand img{width:34px; height:34px; filter: drop-shadow(0 6px 14px rgba(0,0,0,.4));}
.brand span{font-size:15px}
.nav-links{display:flex; gap:14px; flex-wrap:wrap; align-items:center; justify-content:flex-end}
.nav-links a{
  padding:9px 12px;
  border:1px solid transparent;
  border-radius:999px;
  color:var(--muted);
  font-weight:600;
  font-size:13px;
}
.nav-links a.active,
.nav-links a:hover{
  color:var(--text);
  border-color:var(--line);
  background: rgba(255,255,255,.03);
}
.pill{
  display:inline-flex; align-items:center; gap:8px;
  padding:10px 14px;
  border-radius:999px;
  border:1px solid rgba(53,255,122,.25);
  background: linear-gradient(180deg, rgba(53,255,122,.12), rgba(53,255,122,.05));
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
  color:var(--text);
  font-weight:800;
  letter-spacing:.3px;
}
.pill small{color:var(--muted); font-weight:700}
.pill .dot{
  width:8px; height:8px; border-radius:50%;
  background: var(--green);
  box-shadow: 0 0 18px rgba(53,255,122,.8);
}
.hero{padding:44px 0 22px;}
.hero-grid{display:grid; gap:20px; grid-template-columns: 1.15fr .85fr;}
@media (max-width: 900px){.hero-grid{grid-template-columns: 1fr}}
.card{
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
}
.card-pad{padding:22px}
.hero h1{
  margin:12px 0 10px;
  font-size: clamp(34px, 4vw, 54px);
  line-height:1.03;
  letter-spacing:-.8px;
}
.hero p{margin:0; color:var(--muted); font-size:15px; line-height:1.7}
.kbd{display:inline-flex; gap:8px; flex-wrap:wrap; margin-top:14px;}
.tag{
  font-size:12px; font-weight:800;
  color:rgba(233,237,245,.9);
  padding:8px 10px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.22);
}
.cta-row{display:flex; gap:10px; flex-wrap:wrap; margin-top:18px}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:11px 14px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--text);
  font-weight:900;
  font-size:13px;
  cursor:pointer;
}
.btn:hover{transform: translateY(-1px)}
.btn.primary{
  border-color: rgba(53,255,122,.35);
  background: linear-gradient(180deg, rgba(53,255,122,.18), rgba(53,255,122,.07));
}
.btn.green{
  border-color: rgba(0,210,106,.45);
  background: linear-gradient(180deg, rgba(0,210,106,.22), rgba(0,210,106,.08));
}
.btn.ghost{background: transparent;}
.grid-2{display:grid; grid-template-columns:1fr 1fr; gap:14px}
@media (max-width:760px){.grid-2{grid-template-columns:1fr}}
.grid-3{display:grid; grid-template-columns: repeat(3, 1fr); gap:14px}
@media (max-width:980px){.grid-3{grid-template-columns:1fr}}
.section{padding:24px 0}
.h2{font-size:20px; letter-spacing:-.2px; margin:0 0 10px}
.sub{margin:0 0 14px; color:var(--muted); line-height:1.7}
.panel{
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:16px;
}
.row{display:flex; gap:12px; flex-wrap:wrap; align-items:center; justify-content:space-between}
.mono{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;}
.copy{
  display:flex; align-items:center; gap:10px; flex-wrap:wrap;
  padding:10px 12px;
  border-radius: 14px;
  border:1px dashed rgba(255,255,255,.16);
  background: rgba(0,0,0,.25);
}
.copy button{
  padding:8px 10px;
  border-radius: 12px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--text);
  font-weight:900;
  cursor:pointer;
}
.copy button:hover{transform: translateY(-1px)}
iframe{
  width:100%;
  border:1px solid rgba(255,255,255,.10);
  border-radius: var(--radius);
  height:520px;
  background: rgba(0,0,0,.25);
}
@media (max-width:760px){ iframe{height:560px} }
.footer{
  padding:26px 0 44px;
  color:var(--muted);
  border-top:1px solid var(--line);
  margin-top:30px;
}
.footer a{color:var(--text)}
.small{font-size:12px; color:var(--muted); line-height:1.6}
form{display:grid; gap:10px}
label{font-size:12px; color:var(--muted); font-weight:800}
input, select, textarea{
  width:100%;
  padding:12px 12px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.22);
  color: var(--text);
  outline:none;
}
textarea{min-height:120px; resize:vertical}
.hr{height:1px; background: var(--line); margin:14px 0}
.notice{
  padding:12px 14px;
  border-radius: 14px;
  border:1px solid rgba(186,255,45,.18);
  background: linear-gradient(180deg, rgba(186,255,45,.08), rgba(186,255,45,.03));
  color: var(--text);
}
.notice strong{color: var(--lime)}
.badge{
  display:inline-flex; align-items:center; gap:8px;
  padding:8px 10px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
  color: var(--muted);
  font-weight:800;
  font-size:12px;
}
.table{
  width:100%;
  border-collapse: collapse;
  overflow:hidden;
  border-radius: var(--radius);
  border:1px solid var(--line);
}
.table th, .table td{
  padding:12px 12px;
  border-bottom:1px solid var(--line);
  text-align:left;
  font-size:13px;
}
.table th{color: var(--muted); font-size:12px; letter-spacing:.2px; text-transform:uppercase}
.table tr:last-child td{border-bottom:none}
.table tr:hover td{background: rgba(255,255,255,.02)}
.quiz-q{font-weight:900; margin:0 0 10px}
.opt{
  display:flex; gap:10px; align-items:flex-start;
  padding:10px 10px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.18);
  cursor:pointer;
}
.opt:hover{background: rgba(255,255,255,.03)}
.opt input{margin-top:3px; width:auto}
.opt span{color: var(--text); font-weight:700}
.result{
  padding:14px;
  border-radius: 16px;
  border:1px solid rgba(53,255,122,.22);
  background: linear-gradient(180deg, rgba(53,255,122,.10), rgba(53,255,122,.04));
}