:root {
  --ui-bg: #f4f5f2;
  --ui-bg-accent: #eef4f1;
  --ui-surface: #ffffff;
  --ui-surface-soft: #f8faf8;
  --ui-ink: #17212b;
  --ui-muted: #5b6673;
  --ui-accent: #0e8f79;
  --ui-accent-hover: #0b7664;
  --ui-accent-ink: #ffffff;
  --ui-danger: #c0483c;
  --ui-warning: #ad6818;
  --ui-border: #d6dde5;
  --ui-border-strong: #bdc8d4;
  --ui-focus: rgba(14, 143, 121, 0.24);
  --ui-shadow: 0 14px 34px rgba(23, 33, 43, 0.1);
  --ui-radius-sm: 12px;
  --ui-radius-md: 16px;
  --ui-radius-lg: 20px;
  --ui-space-1: 6px;
  --ui-space-2: 10px;
  --ui-space-3: 14px;
  --ui-space-4: 18px;
  --ui-space-5: 24px;
  --ui-space-6: 32px;

  /* Backward-compatible aliases used by page-level styles. */
  --ink: var(--ui-ink);
  --muted: var(--ui-muted);
  --accent: #c56a36;
  --accent-2: var(--ui-accent);
  --panel: var(--ui-surface);
  --border: var(--ui-border);
  --shadow: var(--ui-shadow);
  --warning: var(--ui-warning);
}

html {
  font-size: 16px;
}

body {
  color: var(--ui-ink);
  background:
    radial-gradient(circle at 16% -8%, #fff9ec 0%, transparent 44%),
    radial-gradient(circle at 84% -6%, #edf7f2 0%, transparent 46%),
    linear-gradient(180deg, #f8f8f5 0%, var(--ui-bg) 52%, var(--ui-bg-accent) 100%);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.56;
}

h1,
h2,
h3 {
  color: var(--ui-ink);
  letter-spacing: 0.12px;
}

h1 {
  font-size: clamp(1.7rem, 2.35vw, 2.35rem);
  line-height: 1.18;
}

h2 {
  font-size: clamp(1.15rem, 1.4vw, 1.45rem);
  line-height: 1.28;
}

h3 {
  font-size: clamp(1rem, 1.15vw, 1.18rem);
  line-height: 1.35;
}

p,
label {
  color: var(--ui-muted);
}

a {
  color: var(--ui-accent);
}

a:hover {
  color: var(--ui-accent-hover);
}

.topbar,
.panel,
.card,
.section,
.hero,
.hero-card,
.quick-card,
.task-card,
.empty-state,
.estimate-panel,
.estimate-grid > div,
.language-alert,
.editorial-mode-panel,
.reader-journey,
.account-snapshot,
.billing-journey,
.queue-section,
.queue-card,
.plan-card,
.note-card,
.detail-item,
.result-card,
.form-card,
.contact-card,
.status,
.output,
.toc,
.resource-item,
.modal-card,
.chart-card,
.alert-card,
.alert-item {
  border-color: var(--ui-border);
}

.panel,
.card,
.section,
.hero,
.hero-card,
.quick-card,
.task-card,
.empty-state,
.estimate-panel,
.reader-journey,
.account-snapshot,
.billing-journey,
.queue-section,
.queue-card,
.plan-card,
.note-card,
.detail-item,
.result-card,
.form-card,
.contact-card,
.status,
.output,
.toc,
.resource-item,
.modal-card,
.chart-card,
.alert-card,
.alert-item {
  box-shadow: var(--ui-shadow);
}

.panel,
.section,
.hero,
.hero-card,
.task-card,
.quick-card,
.queue-section,
.queue-card,
.plan-card,
.result-card,
.form-card,
.contact-card,
.modal-card {
  border-radius: var(--ui-radius-lg);
}

.panel,
.section,
.hero-card,
.toc,
.output,
.queue-section {
  padding: var(--ui-space-4) var(--ui-space-5);
}

.panel-header,
.section-header {
  margin-bottom: var(--ui-space-3);
}

.panel-header p,
.subtitle,
.section-copy,
.hint,
.micro-copy,
.muted {
  font-size: 0.84rem;
  line-height: 1.56;
  color: var(--ui-muted);
}

.nav-links {
  gap: 10px;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--ui-border);
  background: rgba(255, 255, 255, 0.76);
  color: #334051;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.nav-links a:hover {
  color: var(--ui-accent);
  border-color: rgba(14, 143, 121, 0.36);
  background: #ffffff;
}

.btn,
button,
a.btn {
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.91rem;
  font-weight: 700;
  letter-spacing: 0.08px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn,
button.btn,
a.btn {
  background: var(--ui-accent);
  color: var(--ui-accent-ink);
  border: 1px solid transparent;
}

.btn:hover,
button.btn:hover,
a.btn:hover {
  background: var(--ui-accent-hover);
  transform: translateY(-1px);
}

.btn.ghost,
button.ghost,
a.btn.ghost,
.secondary-link,
button.secondary {
  background: #ffffff;
  color: var(--ui-ink);
  border: 1px solid var(--ui-border-strong);
}

.btn.subtle {
  background: var(--ui-surface-soft);
  color: #2a3949;
  border: 1px solid var(--ui-border);
}

.btn.danger,
button.danger {
  background: #fff2ef;
  color: var(--ui-danger);
  border: 1px solid #e8b7b0;
}

.btn:disabled,
button:disabled,
a.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.table-action,
.actions button,
td > button:not(.btn) {
  min-height: 36px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--ui-border-strong);
  background: #ffffff;
  color: #2e3a48;
  font-size: 0.78rem;
  font-weight: 600;
}

.table-action:hover,
.actions button:hover,
td > button:not(.btn):hover {
  border-color: rgba(14, 143, 121, 0.4);
  color: var(--ui-accent);
}

input,
select,
textarea {
  min-height: 44px;
  padding: 10px 12px;
  border-radius: var(--ui-radius-sm);
  border: 1px solid var(--ui-border-strong);
  color: var(--ui-ink);
  background: #ffffff;
  font-size: 0.92rem;
}

input::placeholder,
textarea::placeholder {
  color: #8a96a3;
}

input:hover,
select:hover,
textarea:hover {
  border-color: #9dafc1;
}

input:focus,
select:focus,
textarea:focus {
  outline: 0;
  box-shadow: 0 0 0 3px var(--ui-focus);
  border-color: var(--ui-accent);
}

input:required:invalid:not(:placeholder-shown),
textarea:required:invalid:not(:placeholder-shown),
select:required:invalid {
  border-color: #d06a5d;
  box-shadow: 0 0 0 3px rgba(208, 106, 93, 0.18);
}

input:disabled,
select:disabled,
textarea:disabled {
  background: #f1f4f7;
  color: #7e8793;
  border-color: #cfd8e2;
  cursor: not-allowed;
}

.report-table {
  font-size: 12px;
}

.report-table th,
.report-table td {
  padding: 9px 11px;
  border-bottom-color: var(--ui-border);
}

.report-table th {
  background: #f4f8fb;
}

.layout,
.queues,
.reader,
.upload-form,
.task-list,
.estimate-grid,
.advanced-grid,
.feature-grid,
.delivery-grid,
.scene-grid,
.pricing-grid,
.result-grid,
.detail-list,
.plan-grid,
.pricing-notes,
.chart-grid,
.alert-summary,
.alert-list {
  gap: var(--ui-space-3);
}

.status-pill,
.tag,
.pill {
  border-radius: 999px;
  font-weight: 700;
}

.toast {
  border-radius: 999px;
  padding: 12px 16px;
}

@media (max-width: 900px) {
  .panel,
  .section,
  .hero-card,
  .toc,
  .output,
  .queue-section {
    padding: var(--ui-space-3);
  }

  .topbar {
    gap: var(--ui-space-2);
  }

  .btn,
  button,
  a.btn {
    min-height: 48px;
    padding: 12px 16px;
    font-size: 0.95rem;
  }

  input,
  select,
  textarea {
    min-height: 48px;
    font-size: 0.96rem;
  }

  .controls .btn,
  .actions .btn,
  .hero-actions .btn,
  .quote-next-actions .btn,
  .contact-actions .btn,
  .billing-journey-actions .btn,
  .reader-journey-actions .btn,
  .snapshot-action-row .btn {
    width: 100%;
  }

  .nav-links a {
    min-height: 42px;
    font-size: 13px;
  }
}