:root {
  --bg: #0f1419;
  --card: #1a222d;
  --ink: #f2f5f8;
  --muted: #9aa7b5;
  --accent: #3dd68c;
  --accent2: #5b8cff;
  --warn: #ffb020;
  --danger: #ff5c5c;
  --line: #2a3544;
  --radius: 14px;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  min-height: 100vh; line-height: 1.45;
}
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 980px; margin: 0 auto; padding: 20px; }
.nav {
  display: flex; gap: 16px; align-items: center; justify-content: space-between;
  padding: 14px 20px; border-bottom: 1px solid var(--line); background: #0c1015;
  position: sticky; top: 0; z-index: 10;
}
.nav .brand { font-weight: 800; letter-spacing: -0.02em; color: var(--ink); font-size: 1.15rem; }
.nav .brand span { color: var(--accent); }
.nav .links { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  background: #243041; color: var(--muted); font-size: 12px;
}
.badge.ok { background: #163526; color: var(--accent); }
.badge.warn { background: #3a2a10; color: var(--warn); }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; margin: 14px 0;
}
.grid { display: grid; gap: 14px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
h1,h2,h3 { letter-spacing: -0.02em; margin: 0 0 10px; }
.muted { color: var(--muted); }
.btn {
  display: inline-block; background: var(--accent); color: #062416;
  border: none; border-radius: 10px; padding: 10px 16px; font-weight: 700;
  cursor: pointer; text-decoration: none;
}
.btn:hover { filter: brightness(1.05); text-decoration: none; }
.btn.secondary { background: #2a3544; color: var(--ink); }
.btn.danger { background: var(--danger); color: #fff; }
.btn.block { display: block; width: 100%; text-align: center; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
input, textarea, select {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: #121820; color: var(--ink);
}
textarea { min-height: 110px; resize: vertical; }
.flash { padding: 10px 14px; border-radius: 10px; margin: 10px 0; }
.flash.ok { background: #163526; color: var(--accent); }
.flash.error { background: #3a1515; color: #ffb4b4; }
.price { font-size: 1.4rem; font-weight: 800; color: var(--accent); }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); }
.fee-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.fee-row.total { font-weight: 800; font-size: 1.1rem; border-bottom: none; padding-top: 12px; }
.tier { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.qr { background: #fff; padding: 8px; border-radius: 8px; display: inline-block; }
.scan-result {
  margin-top: 16px; padding: 16px; border-radius: 12px; font-size: 1.1rem; font-weight: 700;
}
.scan-result.ok { background: #163526; color: var(--accent); }
.scan-result.bad { background: #3a1515; color: #ffb4b4; }
#reader { width: 100%; max-width: 420px; margin: 0 auto; }
.compare th:nth-child(2) { color: var(--accent); }
.hero {
  padding: 28px 0 8px;
}
.hero h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
.hero .lead { color: var(--muted); font-size: 1.05rem; max-width: 620px; }
footer { color: var(--muted); font-size: 12px; padding: 28px 0; text-align: center; }
@media (max-width: 600px) {
  .nav { flex-direction: column; align-items: flex-start; }
}