:root { color-scheme: dark; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; font-family: "Segoe UI", Arial, sans-serif; background: linear-gradient(135deg, #0b0d17, #142d28 55%, #0d120d); color: #e2e8f0; line-height: 1.65; }
main { width: min(900px, calc(100% - 32px)); margin: 0 auto; padding: 48px 0 64px; }
.back-link { display: inline-flex; align-items: center; gap: 7px; margin-bottom: 28px; color: #cbd5e1; font-weight: 700; text-decoration: none; }
.back-link:hover { color: #fff; }
.eyebrow { margin: 0 0 8px; color: #5eead4; font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
h1 { margin: 0; color: #fff; font-size: clamp(2rem, 6vw, 3.2rem); line-height: 1.15; }
h2 { margin: 34px 0 8px; color: #7dd3fc; font-size: 1.25rem; }
p, li { color: #cbd5e1; }
a { color: #7dd3fc; }
a:hover { color: #bae6fd; }
.updated { margin: 14px 0 30px; color: #94a3b8; }
.notice { padding: 16px 18px; border: 1px solid #365a60; border-radius: 10px; background: rgba(20, 54, 49, .62); }
nav { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 42px; padding-top: 20px; border-top: 1px solid #334155; }
.payment-card { margin-top: 30px; padding: 22px; border: 1px solid #365a60; border-radius: 12px; background: rgba(20, 54, 49, .62); }
.payment-card p { overflow-wrap: anywhere; }
.wallet-address { padding: 14px; border-radius: 8px; background: #020617; color: #7dd3fc; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.copy-button { width: 100%; margin-top: 14px; padding: 12px 16px; border: 0; border-radius: 8px; background: #16a34a; color: #fff; font: inherit; font-weight: 800; cursor: pointer; }
.copy-button:hover { background: #15803d; }