body {
  overflow-y: auto;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(149, 224, 255, 0.34), transparent 30%),
    linear-gradient(180deg, #f7fbff 0%, #eef4f8 42%, #f8fafc 100%);
}

.billing-page.hidden {
  display: none;
}

.billing-hero.hidden {
  display: none;
}

.billing-topbar {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.billing-topbar-home img {
  height: 46px;
  width: auto;
}

.billing-topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.billing-mode-pill {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 0.7rem;
  border-radius: 999px;
  background: #0f172a;
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
}

.billing-secondary-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
}

.billing-secondary-link:hover {
  color: var(--text);
}

.billing-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 12px 0 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.billing-hero,
.billing-auth-prompt,
.billing-account,
.billing-management-panel,
.billing-plans,
.billing-comparison,
.billing-faq {
  border: 1px solid rgba(208, 218, 229, 0.9);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.07);
}

.billing-hero {
  padding: 34px;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.8fr);
  gap: 28px;
}

.billing-hero-kicker,
.billing-section-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 0.65rem;
  border-radius: 999px;
  background: #dff4ff;
  color: #0c4a6e;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.billing-hero h1 {
  margin-top: 0.9rem;
  max-width: 12ch;
  font-size: clamp(2.1rem, 4vw, 3.8rem);
  line-height: 0.96;
}

.billing-hero p {
  margin-top: 1rem;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.billing-hero-side {
  display: flex;
  align-items: stretch;
}

.billing-hero-badge {
  width: 100%;
  border-radius: 24px;
  padding: 22px;
  background: linear-gradient(160deg, #0f172a 0%, #0f3b50 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.75rem;
}

.billing-hero-badge strong {
  font-size: clamp(1.8rem, 3.2vw, 2.8rem);
  line-height: 1;
}

.billing-hero-badge span {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.6;
}

.billing-alert {
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid #c9e5d0;
  background: #f1fbf4;
  color: #166534;
  font-size: 0.95rem;
  line-height: 1.6;
}

.billing-alert.warning {
  border-color: #f8d8a8;
  background: #fff9ee;
  color: #9a5800;
}

.billing-alert.info {
  border-color: #cfe4fb;
  background: #f4f9ff;
  color: #21557f;
}

.billing-auth-prompt,
.billing-account,
.billing-management-panel,
.billing-plans,
.billing-comparison,
.billing-faq {
  padding: 28px;
}

.billing-auth-prompt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.billing-auth-prompt h2,
.billing-section-header h2 {
  margin-top: 0.6rem;
  font-size: clamp(1.55rem, 2vw, 2.2rem);
}

.billing-auth-prompt p,
.billing-muted-copy,
.billing-faq p {
  color: var(--text-muted);
  line-height: 1.65;
}

.billing-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 22px;
}

.billing-section-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.billing-primary-btn,
.billing-secondary-btn,
.billing-plan-link {
  border: none;
  border-radius: 14px;
  min-height: 48px;
  padding: 0.85rem 1.1rem;
  font-size: 0.94rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.billing-primary-btn {
  background: linear-gradient(135deg, #0f172a 0%, #0f3b50 100%);
  color: #fff;
  box-shadow: 0 16px 28px rgba(15, 23, 42, 0.16);
}

.billing-primary-btn:hover,
.billing-plan-link:hover {
  transform: translateY(-1px);
}

.billing-secondary-btn {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
}

.billing-primary-btn[disabled],
.billing-secondary-btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.billing-primary-btn-full {
  width: 100%;
}

.billing-account.hidden,
.billing-management-panel.hidden,
.billing-auth-prompt.hidden,
.billing-manage-subtle.hidden,
.billing-plans.hidden,
.billing-comparison.hidden,
.billing-faq.hidden,
.billing-mode-pill.hidden,
.billing-alert.hidden {
  display: none;
}

.billing-manage-subtle {
  display: flex;
  justify-content: flex-end;
  margin-top: -0.25rem;
}

.billing-inline-link {
  border: none;
  background: transparent;
  padding: 0;
  color: var(--text-dim);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.billing-inline-link:hover {
  color: var(--text);
  text-decoration: underline;
}

.billing-account-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) repeat(2, minmax(220px, 1fr));
  gap: 18px;
}

.billing-management-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) repeat(2, minmax(220px, 1fr));
  gap: 18px;
}

.billing-account-card {
  padding: 22px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbfe 100%);
  border: 1px solid #e3edf5;
}

.billing-account-card-plan {
  background:
    radial-gradient(circle at top right, rgba(149, 224, 255, 0.25), transparent 38%),
    linear-gradient(180deg, #ffffff 0%, #f8fbfe 100%);
}

.billing-card-label {
  font-size: 0.77rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
}

.billing-plan-row {
  margin-top: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.billing-plan-row h3 {
  font-size: 1.7rem;
}

.billing-plan-pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 0.7rem;
  border-radius: 999px;
  background: #edf5fb;
  color: #325872;
  font-size: 0.78rem;
  font-weight: 700;
}

.billing-usage-value {
  margin-top: 0.8rem;
  font-size: clamp(1.8rem, 2.3vw, 2.3rem);
  line-height: 1;
}

.billing-management-value {
  margin-top: 0.8rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  word-break: break-word;
}

.billing-management-list {
  margin-top: 0.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  color: var(--text);
  font-weight: 600;
}

.billing-management-list span {
  position: relative;
  padding-left: 1.2rem;
  line-height: 1.5;
}

.billing-management-list span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.48rem;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #0ea5e9;
}

.billing-meter {
  margin-top: 0.9rem;
  height: 10px;
  border-radius: 999px;
  background: #e6edf3;
  overflow: hidden;
}

.billing-meter span {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, #4fc3f7 0%, #0ea5e9 100%);
}

.billing-meter span.warning {
  background: linear-gradient(90deg, #fbbf24 0%, #f59e0b 100%);
}

.billing-meter span.danger {
  background: linear-gradient(90deg, #f87171 0%, #ef4444 100%);
}

.billing-metadata {
  margin-top: 1.1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.billing-metadata dt {
  font-size: 0.76rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.billing-metadata dd {
  margin-top: 0.25rem;
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 600;
}

.billing-plan-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.billing-plan-card {
  position: relative;
  padding: 24px;
  border-radius: 24px;
  border: 1px solid #e3edf5;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbfe 100%);
}

.billing-plan-card-highlight {
  border-color: #95e0ff;
  background:
    radial-gradient(circle at top right, rgba(149, 224, 255, 0.3), transparent 35%),
    linear-gradient(180deg, #ffffff 0%, #f8fbfe 100%);
  box-shadow: 0 18px 34px rgba(14, 165, 233, 0.12);
}

.billing-plan-ribbon {
  position: absolute;
  top: 18px;
  right: 18px;
  min-height: 28px;
  padding: 0 0.7rem;
  border-radius: 999px;
  background: #0f172a;
  color: #fff;
  display: inline-flex;
  align-items: center;
  font-size: 0.76rem;
  font-weight: 700;
}

.billing-plan-name {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.billing-plan-card h3 {
  margin-top: 0.8rem;
  font-size: clamp(2rem, 3vw, 2.6rem);
}

.billing-plan-card h3 small {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.billing-plan-card p {
  margin-top: 0.8rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.billing-feature-list {
  margin: 1.2rem 0 1.5rem;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.billing-feature-list li {
  position: relative;
  padding-left: 1.35rem;
  line-height: 1.5;
}

.billing-feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.48rem;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #0ea5e9;
}

.billing-plan-link {
  width: 100%;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
}

.billing-comparison-table {
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid #e3edf5;
}

.billing-comparison-row {
  display: grid;
  grid-template-columns: minmax(180px, 1.4fr) repeat(2, minmax(120px, 0.8fr));
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: #fff;
  border-top: 1px solid #eef3f7;
}

.billing-comparison-row:first-child {
  border-top: none;
}

.billing-comparison-head {
  background: #f8fbfe;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.billing-faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.billing-faq-grid article {
  padding: 20px;
  border-radius: 20px;
  border: 1px solid #e3edf5;
  background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
}

.billing-faq-grid h3 {
  margin-bottom: 0.6rem;
  font-size: 1rem;
}

@media (max-width: 960px) {
  .billing-hero,
  .billing-account-grid,
  .billing-management-grid,
  .billing-plan-grid,
  .billing-faq-grid {
    grid-template-columns: 1fr;
  }

  .billing-auth-prompt,
  .billing-section-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .billing-topbar,
  .billing-shell {
    width: min(100% - 20px, 1180px);
  }

  .billing-hero,
  .billing-auth-prompt,
  .billing-account,
  .billing-plans,
  .billing-comparison,
  .billing-faq {
    padding: 20px;
    border-radius: 22px;
  }

  .billing-comparison-row {
    grid-template-columns: 1.2fr repeat(2, minmax(84px, 0.8fr));
    padding: 0.9rem 0.85rem;
    font-size: 0.9rem;
  }
}