.billing-screen{min-height:100vh;display:flex;align-items:flex-start;justify-content:center;padding:48px 16px}.billing-card{width:100%;max-width:460px;background:var(--surface,#fff);border:1px solid var(--border,#e2e8f0);border-radius:14px;padding:28px 28px 22px;box-shadow:0 8px 30px rgba(15,23,42,.08)}.billing-card h1{margin:0 0 18px;font-size:22px}.billing-balance{display:flex;flex-direction:column;gap:4px;padding:16px;border-radius:10px;background:var(--surface-muted,#f8fafc);border:1px solid var(--border,#e2e8f0);margin-bottom:20px}.billing-balance-label{font-size:13px;color:var(--text-muted,#64748b)}.billing-balance-value{font-size:30px;font-weight:700;line-height:1.1}.billing-balance-detail{font-size:12px;color:var(--text-muted,#64748b)}.billing-topup{display:flex;flex-direction:column;gap:12px}.billing-notice{color:#15803d;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:8px 12px;font-size:14px;margin:0 0 12px}.billing-pending{margin-top:18px;padding:16px;border-radius:10px;border:1px dashed var(--border,#cbd5e1);background:var(--surface-muted,#f8fafc)}.billing-pending p{margin:0 0 10px;font-size:14px}.billing-pay-link{display:inline-block;font-weight:600;color:var(--accent,#2563eb);text-decoration:none}.billing-sim{margin-top:14px;padding-top:12px;border-top:1px solid var(--border,#e2e8f0)}.billing-sim-note{font-size:12px;color:var(--text-muted,#64748b);margin:0 0 8px}.billing-sim-button{border:1px solid #16a34a;color:#16a34a;background:transparent;border-radius:8px;padding:8px 14px;font-size:14px;cursor:pointer}.billing-sim-button:disabled{opacity:.5;cursor:default}.billing-skip{display:block;margin:18px auto 0;border:none;background:transparent;color:var(--text-muted,#64748b);font-size:13px;cursor:pointer}.billing-skip:hover{color:var(--accent,#6E9BE0)}.billing-skip:disabled{opacity:.5;cursor:default}.billing-footer{margin-top:20px;font-size:14px}.billing-footer a{color:var(--text-muted,#64748b);text-decoration:none}.billing-presets{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.billing-preset{background:var(--surface-2,#1e242d);border:1px solid var(--border,#333b47);border-radius:10px;color:var(--text,#e9ecf1);cursor:pointer;font-size:13px;padding:9px 14px}.billing-preset.is-active{background:var(--accent,#6e9be0);border-color:var(--accent,#6e9be0);color:var(--accent-ink,#0c1118);font-weight:700}.billing-estimate{background:var(--surface-2,#1e242d);border:1px solid var(--border,#333b47);border-radius:12px;margin:14px 0;padding:14px 16px}.billing-estimate-total{color:var(--text,#e9ecf1);font-size:16px;margin-bottom:10px}.billing-estimate-total strong{color:var(--accent,#6e9be0)}.billing-estimate-rows{display:flex;flex-direction:column;gap:7px;list-style:none;margin:0;padding:0}.billing-estimate-rows li{color:var(--text-2,#99a1ad);display:flex;font-size:13px;justify-content:space-between}.billing-estimate-rows li.bonus span:last-child{color:var(--good,#4bbe89);font-weight:600}.billing-estimate-rows li.muted{opacity:.7}.billing-history-empty{color:var(--text-2,#99a1ad);font-size:14px}.billing-history{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.billing-history-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--border,rgba(255,255,255,.08))}.billing-history-row:last-child{border-bottom:none}.billing-history-main{display:flex;flex-direction:column;gap:2px;min-width:0}.billing-history-label{font-weight:600;font-size:14px}.billing-history-desc{color:var(--text-2,#99a1ad);font-size:12.5px}.billing-history-date{color:var(--text-3,#6b7280);font-size:12px}.billing-history-amt{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:700;font-size:14px;white-space:nowrap}.billing-history-amt.credit{color:var(--good,#4bbe89)}.billing-history-amt.debit{color:var(--text,#e6e9ee)}