:root { color-scheme: dark; font-family: Inter, ui-sans-serif, system-ui, sans-serif; background: #020305; }
* { box-sizing: border-box; }
body { min-width: 320px; min-height: 100vh; margin: 0; color: #f5f7fb; background: linear-gradient(110deg, rgba(70,229,184,.045), transparent 32%), linear-gradient(290deg, rgba(139,124,246,.06), transparent 36%), repeating-radial-gradient(circle at 24px 24px, rgba(255,255,255,.028) 0 1px, transparent 1px 11px), #020305; }
button, input { font: inherit; }
.page-shell { display: grid; min-height: 100vh; place-items: center; padding: 28px; }
.buyer-card { width: min(610px, 100%); overflow: hidden; border: 2px solid rgba(70,229,184,.55); border-radius: 8px; background: linear-gradient(145deg, rgba(70,229,184,.1), transparent 46%), rgba(6,7,11,.96); box-shadow: 0 22px 60px rgba(0,0,0,.55), inset 0 1px rgba(255,255,255,.08); }
.card-heading { display: flex; gap: 14px; align-items: flex-start; padding: 24px; border-bottom: 2px solid rgba(255,255,255,.12); background: linear-gradient(90deg, rgba(70,229,184,.08), transparent 62%); }
.card-number { display: grid; flex: 0 0 42px; width: 42px; height: 42px; place-items: center; border: 2px solid rgba(70,229,184,.65); border-radius: 50%; color: #46e5b8; font-size: 14px; font-weight: 900; }
.card-heading p, .card-heading h1, .card-heading span, .form-message { margin: 0; }
.card-heading p { color: #46e5b8; font-size: 10px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.card-heading h1 { margin-top: 5px; font-size: 25px; line-height: 1.1; }
.card-heading div > span { display: block; margin-top: 8px; color: #9ea7b8; font-size: 13px; line-height: 1.45; }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; padding: 24px; }
label { display: grid; min-width: 0; gap: 7px; }
label > span { color: #aab2c2; font-size: 10px; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
em { color: #838b9b; font-style: normal; }
.span-full { grid-column: 1 / -1; }
input { width: 100%; min-width: 0; min-height: 46px; padding: 0 12px; border: 2px solid rgba(255,255,255,.18); border-radius: 7px; outline: 0; color: #f5f7fb; background: #090a0f; font-size: 14px; font-weight: 670; box-shadow: inset 0 1px rgba(255,255,255,.06); }
input:focus { border-color: rgba(70,229,184,.78); box-shadow: 0 0 0 2px rgba(70,229,184,.1), inset 0 1px rgba(255,255,255,.08); }
footer { display: flex; min-height: 84px; align-items: center; justify-content: space-between; gap: 14px; padding: 16px 24px; border-top: 2px solid rgba(255,255,255,.12); }
.form-message { flex: 1; color: #aeb7c8; font-size: 13px; line-height: 1.4; }
.form-message.success { color: #65edc8; }.form-message.error { color: #ff97ae; }
button { min-height: 44px; padding: 0 17px; border: 2px solid rgba(70,229,184,.78); border-radius: 7px; color: #06100d; background: #46e5b8; cursor: pointer; font-size: 14px; font-weight: 900; box-shadow: 0 10px 24px rgba(70,229,184,.16); }
button:hover, button:focus-visible { border-color: #fff; background: #70edcb; outline: 0; } button:disabled { cursor: progress; opacity: .65; }
@media (max-width: 560px) { .page-shell { padding: 14px; }.field-grid { grid-template-columns: 1fr; gap: 13px; padding: 18px; }.span-full { grid-column: auto; } footer { align-items: stretch; flex-direction: column; padding: 15px 18px; } button { width: 100%; }.card-heading { padding: 20px 18px; }.card-heading h1 { font-size: 22px; } }