:root {
  --bg: #0e0f12; --panel: #16181d; --line: #262931; --text: #eceae4; --muted: #a3a19a;
  --gold: #d9a63a; --gold-ink: #1a1405; --red: #e0605b; --red-bg: #2a1616; --green: #4fbf7f;
  --radius: 12px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: var(--gold); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
header { border-bottom: 1px solid var(--line); }
header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 700; letter-spacing: .3px; text-decoration: none; color: var(--text); }
.brand span { color: var(--gold); }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
.hero { padding: 56px 0 28px; }
.hero h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.15; margin: 0 0 12px; }
.hero p { color: var(--muted); font-size: 18px; margin: 0 0 22px; max-width: 640px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 8px; }
.tag { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: 14px; color: var(--muted); }
section { padding: 26px 0; border-top: 1px solid var(--line); }
h2 { font-size: 24px; margin: 0 0 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
ol.steps { padding-left: 20px; margin: 0; } ol.steps li { margin: 6px 0; }
.risk { background: var(--red-bg); border: 1px solid #5a2a28; border-radius: var(--radius); padding: 18px 20px; }
.risk h2 { color: var(--red); }
.risk ul { margin: 0; padding-left: 20px; }
.buy { background: var(--panel); border: 1px solid var(--gold); border-radius: var(--radius); padding: 24px; }
.price { font-size: 40px; font-weight: 700; margin: 0; } .price small { font-size: 16px; color: var(--muted); font-weight: 400; }
label.check { display: flex; gap: 10px; align-items: flex-start; margin: 16px 0; font-size: 15px; color: var(--muted); cursor: pointer; }
label.check input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--gold); }
.btn { display: inline-block; border: 0; border-radius: 10px; padding: 14px 22px; font: 600 17px/1 inherit; cursor: pointer; text-decoration: none; }
.btn-gold { background: var(--gold); color: var(--gold-ink); }
.btn-gold[disabled] { opacity: .5; cursor: not-allowed; }
.btn-line { background: transparent; color: var(--text); border: 1px solid var(--line); }
input[type=text] { width: 100%; background: #0b0c0f; color: var(--text); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; font: 17px/1.2 ui-monospace, Consolas, monospace; }
.row { display: flex; gap: 10px; flex-wrap: wrap; } .row > input { flex: 1; min-width: 200px; }
.msg { margin: 12px 0 0; font-size: 15px; } .msg.err { color: var(--red); } .msg.ok { color: var(--green); }
.code { font: 700 clamp(26px, 6vw, 36px)/1.2 ui-monospace, Consolas, monospace; letter-spacing: 2px; color: var(--gold); word-break: break-all; }
table { width: 100%; border-collapse: collapse; } td, th { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
td.key { font-family: ui-monospace, Consolas, monospace; letter-spacing: 1px; }
details { border-bottom: 1px solid var(--line); padding: 12px 0; } summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 8px 0 0; }
.muted { color: var(--muted); } .small { font-size: 14px; }
footer { border-top: 1px solid var(--line); padding: 26px 0 40px; color: var(--muted); font-size: 14px; }
.spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--line); border-top-color: var(--gold); border-radius: 50%; animation: spin 1s linear infinite; vertical-align: -3px; margin-right: 8px; }
@keyframes spin { to { transform: rotate(360deg); } }