:root { color-scheme: dark; font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif; background: #0b0e13; color: #e8edf5; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at top, #182334, #0b0e13 48%); }
.shell { width: min(920px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0; }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
.logo { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: #ef4444; font-weight: 800; }
h1, h2, p { margin-top: 0; }
.muted { color: #93a0b4; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: rgba(19, 25, 36, .94); border: 1px solid #263247; border-radius: 16px; padding: 22px; box-shadow: 0 18px 48px rgba(0,0,0,.24); }
.stack { display: grid; gap: 12px; }
input, select, button { width: 100%; border-radius: 10px; border: 1px solid #35445d; padding: 11px 13px; font: inherit; }
input, select { color: #e8edf5; background: #0e1420; }
button { color: white; background: #dc2626; border-color: #ef4444; font-weight: 700; cursor: pointer; }
button.secondary { background: #172033; border-color: #34445f; }
button:disabled { opacity: .55; cursor: wait; }
.price { font-size: 32px; font-weight: 800; }
.price small { font-size: 14px; color: #93a0b4; }
.status { min-height: 24px; margin-top: 12px; color: #fca5a5; }
.success { color: #86efac; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.row button { width: auto; }
.hidden { display: none !important; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px; border-bottom: 1px solid #263247; text-align: left; }
code { color: #fda4af; }
@media (max-width: 600px) { .shell { padding-top: 24px; } }