/* ========== Design System ========== */
:root{
  --bg0:#070b14;
  --bg1:#0b1220;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.04);
  --text:#eaf0ff;
  --muted:#b4c2e6;
  --muted2:#93a4cf;
  --line:rgba(255,255,255,.12);
  --line2:rgba(255,255,255,.18);

  --primary:#7aa2ff;
  --primary2:#8b5cf6;
  --accent:#22d3ee;

  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --shadow2: 0 12px 30px rgba(0,0,0,.38);
  --radius:22px;
  --radius2:18px;
  --max:1160px;

  --blur: 14px;
}

*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC","Hiragino Sans GB","Microsoft Yahei", sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 12% 12%, rgba(122,162,255,.25), transparent 60%),
    radial-gradient(900px 700px at 88% 16%, rgba(139,92,246,.20), transparent 55%),
    radial-gradient(820px 600px at 60% 86%, rgba(34,211,238,.14), transparent 55%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  overflow-x:hidden;
}

/* Subtle animated grain */
body:before{
  content:"";
  position:fixed; inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)' opacity='.28'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
  opacity:.12;
  pointer-events:none;
  z-index:-1;
}

a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.main{padding:28px 0 44px}

/* ========== Nav ========== */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(7,11,20,.55);
  border-bottom:1px solid rgba(255,255,255,.10);
  backdrop-filter:saturate(160%) blur(var(--blur));
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;flex-direction:column;line-height:1.15}
.brand strong{font-size:14px;letter-spacing:.2px}
.brand span{font-size:12px;color:var(--muted2)}
.nav-links{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.nav-links a{
  font-size:13px;color:var(--muted);
  padding:8px 10px;border-radius:14px;
  transition: background .18s ease, color .18s ease, transform .18s ease, border-color .18s ease;
}
.nav-links a:hover{
  background:rgba(255,255,255,.06);
  color:var(--text);
  transform:translateY(-1px);
}
.nav-links a.active{
  background:linear-gradient(135deg, rgba(122,162,255,.18), rgba(139,92,246,.14));
  color:var(--text);
  border:1px solid rgba(255,255,255,.14);
}

/* ========== Buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 12px;border-radius:16px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:var(--text);
  font-size:13px;
  transition:.2s ease;
  cursor:pointer;
  user-select:none;
}
.btn:hover{transform:translateY(-1px);border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.08)}
.btn.primary{
  border:none;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  box-shadow: 0 16px 36px rgba(122,162,255,.25);
}
.btn.primary:hover{filter:saturate(1.06) contrast(1.02)}
.btn.ghost{
  background:transparent;
  border:1px solid rgba(255,255,255,.14);
}

/* ========== Hero ========== */
.hero{padding:52px 0 18px; position:relative}
.hero:after{
  content:"";
  position:absolute; inset:-80px -40px auto -40px; height:260px;
  background: radial-gradient(600px 220px at 20% 60%, rgba(122,162,255,.20), transparent 70%),
              radial-gradient(520px 220px at 80% 30%, rgba(139,92,246,.18), transparent 70%);
  pointer-events:none;
  filter: blur(2px);
  opacity:.85;
}
.h1{font-size:40px;line-height:1.06;margin:0 0 12px;letter-spacing:-.5px}
.sub{color:var(--muted);font-size:16px;line-height:1.75;margin:0 0 18px;max-width:62ch}

/* ========== Panels / Cards ========== */
.panel{
  border:1px solid rgba(255,255,255,.12);
  background:linear-gradient(180deg, var(--panel), var(--panel2));
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.panel:before{
  content:"";
  position:absolute; inset:-1px;
  background: radial-gradient(420px 220px at 15% 20%, rgba(34,211,238,.18), transparent 60%),
              radial-gradient(520px 260px at 80% 20%, rgba(122,162,255,.16), transparent 60%);
  opacity:.55;
  pointer-events:none;
}
.section{padding:24px 0}
.section h2{margin:0 0 12px;font-size:22px;letter-spacing:-.2px}
.section p.lead{margin:0 0 18px;color:var(--muted);line-height:1.8;max-width:70ch}

.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}

.card{
  padding:18px;
  border-radius:var(--radius2);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.045);
  box-shadow:var(--shadow2);
  position:relative;
  overflow:hidden;
  transition: transform .22s ease, border-color .22s ease, background .22s ease;
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(255,255,255,.20);
  background:rgba(255,255,255,.055);
}
.card:after{
  content:"";
  position:absolute; inset:auto -40px -60px -40px; height:160px;
  background: radial-gradient(420px 120px at 50% 10%, rgba(122,162,255,.12), transparent 70%);
  opacity:.8;
  pointer-events:none;
}
.card h3{margin:0 0 8px;font-size:16px;letter-spacing:-.15px}
.card p{margin:0;color:var(--muted);line-height:1.75;font-size:13px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11px;padding:6px 10px;border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  color:var(--muted);
  background:rgba(0,0,0,.18);
  margin-bottom:10px
}
.badge:before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--primary));
  box-shadow:0 0 18px rgba(34,211,238,.22);
}

.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 0}
.pill{
  font-size:12px;color:var(--muted);
  border:1px solid rgba(255,255,255,.12);
  padding:8px 10px;border-radius:999px;
  background:rgba(255,255,255,.04)
}

hr.sep{border:none;border-top:1px solid rgba(255,255,255,.12);margin:18px 0}

/* ========== Steps ========== */
.steps{display:grid;gap:10px}
.step{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px;border-radius:20px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.035);
  box-shadow:var(--shadow2);
  transition:transform .22s ease, border-color .22s ease;
}
.step:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.20)}
.num{
  width:32px;height:32px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg, rgba(122,162,255,.22), rgba(139,92,246,.18));
  border:1px solid rgba(255,255,255,.16);
  color:var(--text);font-weight:700;font-size:13px;
}
.step b{display:block;font-size:14px;margin-bottom:4px}
.step span{display:block;color:var(--muted);font-size:13px;line-height:1.7}

/* ========== CTA ========== */
.cta{
  padding:22px;border-radius:24px;border:1px solid rgba(255,255,255,.14);
  background:
    radial-gradient(520px 240px at 12% 20%, rgba(34,211,238,.16), transparent 60%),
    radial-gradient(520px 240px at 88% 10%, rgba(139,92,246,.14), transparent 60%),
    linear-gradient(135deg, rgba(122,162,255,.14), rgba(139,92,246,.10));
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap
}
.cta h3{margin:0;font-size:18px;letter-spacing:-.2px}
.cta p{margin:6px 0 0;color:var(--muted);font-size:13px;line-height:1.7;max-width:72ch}

/* ========== FAQ ========== */
.faq details{padding:14px 16px;border-radius:18px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.03)}
.faq details+details{margin-top:10px}
.faq summary{cursor:pointer;font-weight:700}
.faq .ans{color:var(--muted);font-size:13px;line-height:1.8;margin-top:8px}

/* ========== Forms ========== */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:grid;gap:6px;margin-bottom:10px}
label{font-size:12px;color:var(--muted2)}
input,textarea{
  width:100%;
  padding:12px 12px;border-radius:16px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(0,0,0,.22);
  color:var(--text);
  outline:none;
  transition:border-color .18s ease, background .18s ease;
}
input:focus,textarea:focus{
  border-color:rgba(122,162,255,.45);
  background:rgba(0,0,0,.28);
}
textarea{min-height:130px;resize:vertical}
.mini{color:var(--muted2);font-size:12px}
.kv{display:grid;gap:8px}
.kv div{color:var(--muted);font-size:13px;line-height:1.9}
.kv b{color:var(--text)}

/* ========== Footer ========== */
footer{
  padding:26px 0 40px;
  color:var(--muted2);
  font-size:12px;
  border-top:1px solid rgba(255,255,255,.10);
  margin-top:20px
}
.foot-row{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ========== Responsive ========== */
@media (max-width: 920px){
  .grid3{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
  .h1{font-size:34px}
}