:root{
  --bg:#0b1020;
  --card:#121a33;
  --alt:#0f1730;
  --text:#e9ecf5;
  --muted:#b7bfd6;
  --line:rgba(255,255,255,.12);
  --accent:#4f7cff;
  --accent2:#2dd4bf;
  --shadow: 0 18px 40px rgba(0,0,0,.35);
  --radius:16px;
}

*{box-sizing:border-box}
html,body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;color:var(--text);background:linear-gradient(180deg,#070a14 0%, #0b1020 35%, #070a14 100%);}
a{color:inherit;text-decoration:none}
.container{width:min(1100px,92%);margin:0 auto}

.header{position:sticky;top:0;backdrop-filter: blur(12px);background:rgba(7,10,20,.65);border-bottom:1px solid var(--line);z-index:20}
.header-row{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));display:grid;place-items:center;font-weight:800}
.brand-name{font-weight:800;letter-spacing:.2px}
.brand-sub{font-size:12px;color:var(--muted)}

.btn{border:1px solid var(--line);background:transparent;color:var(--text);padding:10px 14px;border-radius:12px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn:hover{border-color:rgba(255,255,255,.22)}
.btn-primary{background:linear-gradient(135deg,var(--accent),#6d8dff);border-color:transparent}
.btn-primary:hover{filter:brightness(1.05)}
.btn-ghost{background:rgba(255,255,255,.06)}
.btn-full{width:100%}

.hero{padding:56px 0 20px}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:start}
h1{font-size:44px;line-height:1.08;margin:0 0 14px}
.lead{color:var(--muted);font-size:16px;line-height:1.6;margin:0 0 18px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 18px}
.badge{font-size:12px;color:var(--muted);border:1px solid var(--line);padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.04)}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap}

.section{padding:44px 0}
.section-alt{background:rgba(255,255,255,.03);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{margin:0 0 16px;font-size:26px}
.card{background:rgba(18,26,51,.75);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.card-hero{position:sticky;top:88px}
.card-title{font-weight:800;margin:0 0 10px}
.grid2,.grid3{display:grid;gap:12px}
.grid2{grid-template-columns:1fr 1fr}
.grid3{grid-template-columns:1fr 1fr 1fr}
.grid2-span{grid-column:1/-1}
.grid3-span{grid-column:1/-1}
label{display:flex;flex-direction:column;gap:8px;font-size:13px;color:var(--muted)}
input,select{padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:rgba(0,0,0,.22);color:var(--text);outline:none}
input::placeholder{color:rgba(233,236,245,.45)}
.row{flex-direction:row;align-items:center;gap:10px}

.result{margin-top:12px;border:1px dashed rgba(255,255,255,.18);border-radius:12px;padding:12px;color:var(--text);background:rgba(0,0,0,.18)}
.tiny{margin-top:10px;font-size:12px;color:var(--muted)}
.note{margin-top:14px;color:var(--muted);font-size:13px}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.step{display:flex;gap:12px;align-items:flex-start;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius);padding:14px}
.step-n{width:30px;height:30px;border-radius:10px;background:rgba(79,124,255,.2);display:grid;place-items:center;font-weight:800;color:#cfe0ff}
.step-title{font-weight:800;margin-bottom:4px}
.step-text{color:var(--muted);font-size:13px;line-height:1.5}

.contact-card{display:flex;align-items:center;justify-content:space-between;gap:14px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.contact-name{font-weight:900;font-size:18px}
.contact-sub,.contact-line{color:var(--muted);margin-top:6px}
.contact-actions{display:flex;gap:10px;flex-wrap:wrap}

.pay-box{margin-top:14px}

.chat-fab{
  position:fixed;right:18px;bottom:18px;
  border:none;border-radius:999px;
  padding:12px 16px;background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#071021;font-weight:900;cursor:pointer;box-shadow:var(--shadow);
}
.chat{
  position:fixed;right:18px;bottom:72px;width:min(360px,92vw);
  background:rgba(18,26,51,.92);
  border:1px solid var(--line);border-radius:18px;overflow:hidden;
  box-shadow:var(--shadow);display:none;
}
.chat-header{display:flex;justify-content:space-between;align-items:center;padding:12px 12px;border-bottom:1px solid var(--line)}
.chat-close{background:transparent;border:none;color:var(--text);font-size:16px;cursor:pointer}
.chat-body{height:280px;overflow:auto;padding:12px;display:flex;flex-direction:column;gap:10px}
.bubble{max-width:86%;padding:10px 12px;border-radius:14px;border:1px solid var(--line);background:rgba(0,0,0,.18);color:var(--text);line-height:1.45;font-size:13px}
.bubble.me{align-self:flex-end;background:rgba(79,124,255,.16)}
.chat-input{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line)}
.chat-input input{flex:1}

@media (max-width: 920px){
  .hero-grid{grid-template-columns:1fr}
  .card-hero{position:relative;top:auto}
  h1{font-size:36px}
  .steps{grid-template-columns:1fr}
  .contact-card{flex-direction:column;align-items:flex-start}
}