/* ── Demo payment gateway ─────────────────── */
.gw{max-width:440px;overflow:hidden}
.gw-head{display:flex;align-items:flex-start;gap:10px;padding:16px 18px;background:var(--sidebar);color:#fff}
.gw-brand{font-size:12px;color:#94A3B8}
.gw-title{font-size:16px;font-weight:600}
.gw-demo{margin-left:auto;font-size:11px;font-weight:700;letter-spacing:.04em;background:#FDE68A;color:#78350F;border-radius:999px;padding:3px 9px;white-space:nowrap}
.gw-x{color:#CBD5E1}
.gw-x:hover{background:#1E293B;color:#fff}
.gw-amount{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:12px 18px;border-bottom:1px solid var(--line);background:var(--surface-soft)}
.gw-amount span{font-size:12.5px;color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gw-amount strong{font-size:20px}
.gw-tabs{margin-bottom:16px}
.gw-tabs .seg{flex:1}
.gw-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.gw-grid .input{margin-top:6px}
.gw-help{margin-top:14px;font-size:12.5px;line-height:1.6;color:var(--notice-fg);background:var(--notice-bg);border:1px solid var(--notice-br);border-radius:var(--r-md);padding:10px 12px}
.gw-err{margin-top:12px;font-size:13px;color:#991B1B;background:#FEE2E2;border:1px solid #FECACA;border-radius:var(--r-md);padding:9px 12px}
.gw-pay{width:100%;justify-content:center;margin-top:16px;padding:11px}
.gw-fine{font-size:11.5px;color:var(--ink-4);text-align:center;margin:10px 0 0}
.gw-state{text-align:center;padding:10px 0}
.gw-state-title{font-size:17px;font-weight:600;margin:12px 0 4px}
.gw-spin{width:44px;height:44px;margin:8px auto 0;border-radius:50%;border:4px solid var(--track);border-top-color:var(--blue);animation:spin .8s linear infinite}
.gw-mark{width:52px;height:52px;margin:4px auto 0;border-radius:50%;display:grid;place-items:center;font-size:26px;font-weight:700}
.gw-mark--ok{background:var(--green-bg);color:var(--green-fg)}
.gw-mark--bad{background:#FEE2E2;color:#991B1B}
.gw-receipt{margin:16px 0 0;border:1px solid var(--line);border-radius:var(--r-md);text-align:left}
.gw-receipt div{display:flex;justify-content:space-between;gap:12px;padding:8px 12px;font-size:13px}
.gw-receipt div+div{border-top:1px solid var(--line-soft)}
.gw-receipt span{color:var(--ink-3)}
.gw-note-ok{margin:14px 0 0;font-size:13px;color:var(--green-fg);background:var(--green-bg);border:1px solid var(--green-br);border-radius:var(--r-md);padding:9px 12px}
.gw-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;background:var(--blue-tint);border:1px solid var(--blue-br);color:var(--ink);border-radius:var(--r-md);padding:12px 16px;margin-bottom:16px;font-size:13.5px}
@media (max-width:480px){.gw-grid{grid-template-columns:1fr}.gw-grid>div{grid-column:1/-1!important}}