:root {
  --bg: #070a12;
  --bg2: #0d1424;
  --card: #111a2e;
  --line: rgba(148, 163, 184, 0.18);
  --text: #e8eefc;
  --muted: #94a3b8;
  --accent: #22d3ee;
  --accent2: #a78bfa;
  --good: #34d399;
  --warn: #fbbf24;
  --bad: #f87171;
  --radius: 16px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1a2744 0%, transparent 50%),
    radial-gradient(900px 500px at 100% 0%, #2a1848 0%, transparent 45%),
    var(--bg);
  min-height: 100vh;
  line-height: 1.5;
}
.bg-grid {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
  z-index: 0;
}
.top, main, footer { position: relative; z-index: 1; }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem 1.5rem; border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px); position: sticky; top: 0;
  background: rgba(7, 10, 18, 0.75);
}
.brand { display: flex; align-items: center; gap: 0.75rem; }
.logo {
  width: 40px; height: 40px; display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #041018; font-weight: 800; text-decoration: none;
}
nav { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
nav a:hover { color: var(--text); }
main { max-width: 1100px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.hero { margin-bottom: 2.5rem; }
.eyebrow {
  display: inline-block; color: var(--accent); font-size: 0.8rem;
  letter-spacing: 0.04em; text-transform: uppercase; font-weight: 600; margin: 0 0 0.75rem;
}
h1 {
  font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.1;
  letter-spacing: -0.03em; margin: 0 0 1rem;
}
.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { color: var(--muted); font-size: 1.1rem; max-width: 42rem; }
.hero-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem; margin-top: 1.5rem;
}
.stat {
  background: rgba(17, 26, 46, 0.8); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem;
}
.stat-label { color: var(--muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; }
.stat-value { font-size: 1.05rem; margin-top: 0.35rem; word-break: break-all; }
.mono { font-family: var(--mono); font-size: 0.85rem; }
.section-head { margin-bottom: 1rem; }
.section-head h2 { margin: 0 0 0.25rem; }
.muted { color: var(--muted); }
.tiny { font-size: 0.8rem; }
.grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem;
}
.card {
  background: linear-gradient(180deg, rgba(17,26,46,0.95), rgba(13,20,36,0.95));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}
.card.popular {
  border-color: rgba(34, 211, 238, 0.45);
  box-shadow: 0 0 0 1px rgba(34,211,238,0.15), 0 20px 50px rgba(0,0,0,0.25);
}
.card h3 { margin: 0 0 0.35rem; font-size: 1.2rem; }
.price { font-size: 1.6rem; font-weight: 700; margin: 0.75rem 0; }
.price span { font-size: 0.9rem; color: var(--muted); font-weight: 500; }
.features { margin: 0 0 1rem; padding-left: 1.1rem; color: var(--muted); }
.features li { margin: 0.25rem 0; }
.badge {
  display: inline-block; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase; color: #041018;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  padding: 0.2rem 0.5rem; border-radius: 999px; margin-bottom: 0.5rem;
}
.badge.free-badge { background: linear-gradient(90deg, #34d399, #6ee7b7); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  border: none; border-radius: 12px; padding: 0.7rem 1rem; font-weight: 650;
  font-size: 0.95rem; cursor: pointer; text-decoration: none; color: #041018;
  background: linear-gradient(135deg, var(--accent), #67e8f9);
  transition: transform 0.12s ease, filter 0.12s ease;
}
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn.ghost {
  background: transparent; color: var(--text); border: 1px solid var(--line);
}
.btn.full { width: 100%; }
.row { display: flex; gap: 0.5rem; align-items: center; }
.row.wrap { flex-wrap: wrap; }
.howto { margin-top: 3rem; }
.steps { color: var(--muted); padding-left: 1.2rem; }
.steps li { margin: 0.5rem 0; }
.steps strong { color: var(--text); }
code {
  font-family: var(--mono); font-size: 0.85em;
  background: rgba(255,255,255,0.06); padding: 0.1rem 0.35rem; border-radius: 6px;
}
footer {
  border-top: 1px solid var(--line); padding: 1rem 1.5rem 2rem;
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  color: var(--muted); font-size: 0.9rem;
}
footer a { color: var(--accent); }
.checkout { max-width: 520px; }
.checkout-card { text-align: center; }
.checkout-card img.qr {
  width: 280px; height: 280px; border-radius: 12px; background: #fff;
  margin: 1rem auto; display: block;
}
.status-pill {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.35rem 0.7rem; border-radius: 999px; font-size: 0.85rem;
  font-weight: 600; border: 1px solid var(--line);
}
.status-pill.pending { color: var(--warn); }
.status-pill.paid { color: var(--good); border-color: rgba(52,211,153,0.4); }
.license-box {
  margin-top: 1rem; padding: 1rem; border-radius: 12px;
  background: rgba(52, 211, 153, 0.08); border: 1px solid rgba(52, 211, 153, 0.3);
  word-break: break-all;
}
.tools-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1rem;
}
.tool.locked { opacity: 0.55; filter: grayscale(0.3); pointer-events: none; }
.input, textarea.input, input[type="file"] {
  width: 100%; margin: 0.5rem 0; border-radius: 10px; border: 1px solid var(--line);
  background: var(--bg2); color: var(--text); padding: 0.65rem 0.75rem; font: inherit;
}
textarea.area { resize: vertical; font-family: var(--mono); font-size: 0.85rem; }
.out {
  margin: 0.75rem 0 0; padding: 0.75rem; background: rgba(0,0,0,0.25);
  border-radius: 10px; border: 1px solid var(--line); min-height: 2.5rem;
  white-space: pre-wrap; word-break: break-word;
}
.field { margin: 0.5rem 0; }
.check { display: flex; align-items: center; gap: 0.4rem; color: var(--muted); font-size: 0.9rem; margin-bottom: 0.5rem; }
input[type="range"] { width: 100%; }
.lock-banner {
  display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; justify-content: space-between;
  padding: 0.9rem 1rem; border-radius: 12px;
  border: 1px solid rgba(251, 191, 36, 0.35); background: rgba(251, 191, 36, 0.08);
  color: var(--warn); margin-top: 1rem;
}
.qr-wrap { margin-top: 0.75rem; min-height: 40px; }
.qr-wrap img { max-width: 200px; border-radius: 8px; background: #fff; padding: 8px; }
dialog { border: none; border-radius: var(--radius); padding: 0; background: transparent; color: var(--text); }
dialog::backdrop { background: rgba(0,0,0,0.65); }
.dialog-card { min-width: min(400px, 90vw); }
.err { color: var(--bad); font-size: 0.9rem; }
.tip-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.6rem; margin: 1rem 0; }
.tip-grid .btn { width: 100%; }
.addr-box {
  margin: 1rem 0; padding: 1rem; border-radius: 12px; border: 1px solid var(--line);
  background: rgba(0,0,0,0.25); word-break: break-all; font-family: var(--mono); font-size: 0.9rem;
}
.live-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--good); box-shadow: 0 0 8px var(--good); margin-right: 0.35rem;
}
@media (max-width: 600px) {
  .top { padding: 0.85rem 1rem; }
  main { padding: 1.25rem 1rem 3rem; }
}