.kx-gate-modal {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(8,10,16,.72);
  backdrop-filter: blur(6px);
}
.kx-gate-modal[hidden] { display: none !important; }
body.kx-gate-open { overflow: hidden; }
.kx-gate-card {
  width: min(420px, 100%);
  padding: 24px 24px 20px;
  border-radius: 18px;
  border: 1px solid var(--xh-line-strong, rgba(215,189,114,.34));
  background: var(--xh-surface, #1a1814);
  color: var(--xh-text, #e8e4dc);
  box-shadow: 0 24px 80px rgba(0,0,0,.45);
}
.kx-gate-card h2 {
  margin: 0 0 10px;
  font-family: "Noto Serif SC", serif;
  font-size: 1.35rem;
}
.kx-gate-lead {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--xh-body, #c9bfaf);
}
.kx-gate-meta {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--xh-muted, #978d7e);
}
.kx-gate-balance {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--xh-accent-strong, #ead38c);
}
.kx-gate-err {
  margin: 0 0 12px;
  font-size: 13px;
  color: #f87171;
}
.kx-gate-actions {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 10px;
}
.kx-gate-btn {
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--xh-line-strong, rgba(215,189,114,.34));
  background: transparent;
  color: var(--xh-text, #e8e4dc);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}
.kx-gate-btn.primary {
  border-color: transparent;
  background: var(--xh-accent, #d7bd72);
  color: var(--xh-accent-ink, #17130d);
}
.kx-gate-btn:disabled { opacity: .65; cursor: not-allowed; }

.kx-gate-purchase {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--xh-line-strong, rgba(215,189,114,.34));
}
.kx-gate-purchase[hidden] { display: none !important; }
.kx-gate-purchase-lead {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--xh-text, #e8e4dc);
  text-align: center;
}
.kx-gate-purchase-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 8px;
}
.kx-gate-purchase-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--xh-line-strong, rgba(215,189,114,.34));
  background: transparent;
  color: var(--xh-text, #e8e4dc);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}
.kx-gate-purchase-btn.primary {
  border-color: transparent;
  background: var(--xh-accent, #d7bd72);
  color: var(--xh-accent-ink, #17130d);
}
.kx-gate-purchase-btn:hover { opacity: .92; }
.kx-gate-purchase-note {
  margin: 0;
  font-size: 12px;
  color: var(--xh-muted, #978d7e);
  text-align: center;
  line-height: 1.5;
}

/* ─── Light 主题适配与高对比度强化 ─── */
:root[data-xuan-theme="light"] .kx-gate-modal {
  background: rgba(17, 24, 39, 0.48);
}
:root[data-xuan-theme="light"] .kx-gate-card {
  background: #ffffff;
  border-color: #cbd5e4;
  color: #111420;
  box-shadow: 0 20px 60px rgba(17, 20, 32, 0.18);
}
:root[data-xuan-theme="light"] .kx-gate-lead {
  color: #2d3446;
}
:root[data-xuan-theme="light"] .kx-gate-meta {
  color: #566176;
}
:root[data-xuan-theme="light"] .kx-gate-balance {
  color: #2a3dbf;
}
:root[data-xuan-theme="light"] .kx-gate-btn {
  border-color: #cbd5e4;
  color: #2d3446;
  background: #f8fafd;
}
:root[data-xuan-theme="light"] .kx-gate-btn:hover {
  border-color: #9daec6;
  background: #f0f4fa;
}
:root[data-xuan-theme="light"] .kx-gate-btn.primary {
  background: #3b50df;
  color: #ffffff;
  border-color: transparent;
}
:root[data-xuan-theme="light"] .kx-gate-btn.primary:hover {
  background: #2a3dbf;
}
:root[data-xuan-theme="light"] .kx-gate-purchase {
  border-color: #cbd5e4;
}
:root[data-xuan-theme="light"] .kx-gate-purchase-lead {
  color: #111420;
}
:root[data-xuan-theme="light"] .kx-gate-purchase-btn {
  border-color: #cbd5e4;
  color: #2d3446;
  background: #f8fafd;
}
:root[data-xuan-theme="light"] .kx-gate-purchase-btn.primary {
  background: #3b50df;
  color: #ffffff;
  border-color: transparent;
}
:root[data-xuan-theme="light"] .kx-gate-purchase-note {
  color: #566176;
}

/* 付费页右下角 · 使用期/通行证剩余时间 */
.sx-expiry-hud {
  position: fixed;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  z-index: 99990;
  min-width: 148px;
  max-width: min(220px, calc(100vw - 32px));
  padding: 10px 14px 11px;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--xh-accent, #d7bd72) 38%, transparent);
  background: color-mix(in srgb, var(--xh-surface, #1a1814) 92%, transparent);
  color: var(--xh-text, #e8e4dc);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(10px);
  pointer-events: none;
  user-select: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.sx-expiry-hud[hidden] { display: none !important; }
.sx-expiry-hud-kicker {
  font-size: 11px;
  line-height: 1.35;
  color: var(--xh-muted, #978d7e);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sx-expiry-hud-time {
  font-family: "JetBrains Mono", "Cascadia Mono", "Consolas", monospace;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--xh-accent-strong, #ead38c);
  font-variant-numeric: tabular-nums;
}
.sx-expiry-hud-exp {
  margin-top: 5px;
  font-size: 10px;
  line-height: 1.35;
  color: var(--xh-muted, #978d7e);
}
.sx-expiry-hud-note {
  margin-top: 6px;
  font-size: 10.5px;
  line-height: 1.4;
  color: color-mix(in srgb, var(--xh-accent, #d7bd72) 82%, #fff);
}
.sx-expiry-hud.warn {
  border-color: color-mix(in srgb, #f59e0b 55%, transparent);
  box-shadow: 0 10px 28px rgba(245, 158, 11, 0.18);
}
.sx-expiry-hud.warn .sx-expiry-hud-time { color: #fbbf24; }
.sx-expiry-hud.critical {
  border-color: color-mix(in srgb, #ef4444 58%, transparent);
  box-shadow: 0 10px 28px rgba(239, 68, 68, 0.22);
  animation: sx-expiry-pulse 1.2s ease-in-out infinite;
}
.sx-expiry-hud.critical .sx-expiry-hud-time { color: #fca5a5; }
@keyframes sx-expiry-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}
@media (max-width: 768px) {
  body.floor-plan-page .sx-expiry-hud,
  body.qf-app .sx-expiry-hud,
  body.gq-page-body .sx-expiry-hud {
    bottom: calc(72px + env(safe-area-inset-bottom, 0px));
    right: 12px;
  }
  .sx-expiry-hud-time { font-size: 20px; }
}