:root {
  --font-literary: "LXGW WenKai GB", "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-ui: "Inter", "PingFang SC", "Microsoft YaHei UI", system-ui, sans-serif;
  --font-code: "Maple Mono NL CN", "JetBrains Mono", "SFMono-Regular", monospace;

  --color-bg-base: #f8f4ef;
  --color-bg-chat: #f1ebe4;
  --color-bg-card: #fffdf9;
  --color-bg-elevated: #ffffff;
  --color-ink: #201b18;
  --color-text-secondary: #5c514a;
  --color-text-tertiary: #8a7a70;
  --color-brand: #9a4021;
  --color-brand-active: #b95837;
  --color-brand-light: #f8ded4;
  --color-teal: #006768;
  --color-teal-bg: #dcefee;
  --color-blue: #243f73;
  --color-blue-bg: #e4ebfa;
  --color-warning: #9a6100;
  --color-warning-bg: #fff1d7;
  --color-error: #ba1a1a;
  --color-error-bg: #ffe0dc;
  --color-success: #1d6f50;
  --color-success-bg: #e2f3e9;
  --color-border-subtle: #eaded5;
  --color-border-default: #d4c2b5;
  --color-border-strong: #8d766a;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 999px;

  --shadow-paper: 0 2px 12px rgba(32, 27, 24, 0.06), 0 1px 3px rgba(32, 27, 24, 0.04);
  --shadow-lifted: 0 6px 24px rgba(32, 27, 24, 0.08), 0 2px 8px rgba(32, 27, 24, 0.05);
  --focus-ring: 0 0 0 3px rgba(154, 64, 33, 0.28);

  --duration-fast: 150ms;
  --duration-normal: 200ms;
  --duration-medium: 300ms;
  --duration-enter: 500ms;
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-literary: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --user-font-scale: 1;
}

html[data-theme="dark"] {
  --color-bg-base: #181716;
  --color-bg-chat: #20211f;
  --color-bg-card: #282925;
  --color-bg-elevated: #31322e;
  --color-ink: #f4efe8;
  --color-text-secondary: #cfc4b7;
  --color-text-tertiary: #a69384;
  --color-brand: #ffb59d;
  --color-brand-active: #ffc9b3;
  --color-brand-light: rgba(255, 181, 157, 0.14);
  --color-teal: #6cd7d8;
  --color-teal-bg: rgba(108, 215, 216, 0.14);
  --color-blue: #a8c4ff;
  --color-blue-bg: rgba(168, 196, 255, 0.12);
  --color-border-subtle: #35342f;
  --color-border-default: #4b453d;
  --color-border-strong: #837467;
}

html.reduce-motion *,
html.reduce-motion *::before,
html.reduce-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  scroll-behavior: auto !important;
  transition-duration: 0.01ms !important;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(90deg, rgba(36, 63, 115, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(36, 63, 115, 0.035) 1px, transparent 1px),
    var(--color-bg-base);
  background-size: 40px 40px, 40px 40px, auto;
  color: var(--color-ink);
  font-family: var(--font-literary);
  font-size: calc(16px * var(--user-font-scale));
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a,
input,
select,
textarea {
  min-height: 44px;
}

button {
  cursor: pointer;
}

button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 20;
  padding: 12px 18px;
  background: var(--color-brand);
  color: #fff;
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  text-decoration: none;
}

.skip-link:focus {
  top: 16px;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr) minmax(280px, 360px);
  grid-template-rows: auto 1fr;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: rgba(248, 244, 239, 0.88);
  border-bottom: 1px solid var(--color-border-subtle);
  backdrop-filter: blur(16px);
}

html[data-theme="dark"] .topbar {
  background: rgba(24, 23, 22, 0.86);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  background: var(--color-ink);
  color: var(--color-bg-card);
  border-radius: var(--radius-md);
  font-family: var(--font-code);
  font-weight: 700;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(1.35rem, 1.2rem + 0.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: 0;
}

h2 {
  font-size: 1.5rem;
  line-height: 1.25;
  letter-spacing: 0;
}

h3 {
  font-size: 1.05rem;
  line-height: 1.35;
  letter-spacing: 0;
}

.eyebrow {
  color: var(--color-text-tertiary);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.topbar-actions {
  display: flex;
  gap: var(--space-2);
}

.icon-text-button,
.primary-button,
.secondary-button,
.ghost-button,
.chip-button,
.icon-button {
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  color: var(--color-ink);
  font-family: var(--font-ui);
  font-weight: 650;
  transition:
    transform var(--duration-fast) var(--ease-spring),
    background-color var(--duration-normal) var(--ease-standard),
    border-color var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);
}

.icon-text-button,
.primary-button,
.secondary-button,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
}

.primary-button {
  background: var(--color-brand);
  border-color: var(--color-brand);
  color: #fff;
  border-radius: var(--radius-pill);
}

html[data-theme="dark"] .primary-button {
  color: #2c120b;
}

.secondary-button {
  color: var(--color-brand);
}

.ghost-button {
  background: transparent;
}

.icon-button {
  display: grid;
  width: 44px;
  min-width: 44px;
  height: 44px;
  place-items: center;
  padding: 0;
  font-family: var(--font-ui);
  font-size: 1.25rem;
}

.icon-text-button:hover,
.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.chip-button:hover,
.icon-button:hover {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-paper);
  transform: translateY(-1px);
}

.primary-button:hover {
  background: var(--color-brand-active);
}

.icon-text-button:active,
.primary-button:active,
.secondary-button:active,
.ghost-button:active,
.chip-button:active,
.icon-button:active {
  transform: scale(0.98);
  transition: none;
}

.sidebar,
.sheet-preview {
  position: sticky;
  top: 81px;
  align-self: start;
  height: calc(100vh - 81px);
  overflow: auto;
  padding: var(--space-5);
}

.sidebar {
  border-right: 1px solid var(--color-border-subtle);
}

.sheet-preview {
  border-left: 1px solid var(--color-border-subtle);
}

.source-status {
  padding: var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-paper);
}

.source-status dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 12px;
  margin: var(--space-3) 0 0;
  font-family: var(--font-ui);
  font-size: 0.78rem;
}

.source-status dt {
  color: var(--color-text-tertiary);
}

.source-status dd {
  margin: 0;
  font-weight: 700;
}

.step-nav {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.nav-step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: var(--space-3);
  align-items: center;
  min-height: 52px;
  padding: 8px 10px;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
}

.nav-step:hover,
.nav-step.is-active {
  background: var(--color-bg-card);
  color: var(--color-ink);
}

.nav-step.is-complete {
  color: var(--color-teal);
}

.step-number {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid var(--color-border-default);
  border-radius: 50%;
  font-family: var(--font-code);
  font-size: 0.78rem;
  font-weight: 700;
}

.nav-step.is-active .step-number {
  background: var(--color-brand-light);
  border-color: var(--color-brand);
  color: var(--color-brand);
}

.nav-step.is-complete .step-number {
  background: var(--color-teal-bg);
  border-color: var(--color-teal);
}

.main-workspace {
  min-width: 0;
  padding: var(--space-6);
}

.workspace-intro,
.guide-section {
  margin: 0 auto var(--space-6);
  max-width: 1100px;
  background: rgba(255, 253, 249, 0.78);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-paper);
}

html[data-theme="dark"] .workspace-intro,
html[data-theme="dark"] .guide-section {
  background: rgba(40, 41, 37, 0.82);
}

.section-header {
  display: flex;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border-subtle);
}

.section-header p {
  max-width: 72ch;
  margin-top: var(--space-2);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.section-body {
  padding: var(--space-6);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr);
  gap: var(--space-6);
}

.intro-lead {
  font-size: 1.08rem;
  line-height: 1.78;
}

.evidence-image {
  overflow: hidden;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
}

.evidence-image img {
  display: block;
  width: 100%;
  height: auto;
}

.evidence-image figcaption {
  padding: 10px 12px;
  color: var(--color-text-tertiary);
  font-family: var(--font-ui);
  font-size: 0.78rem;
}

.status-grid,
.attribute-grid,
.derived-grid,
.background-grid,
.asset-grid {
  display: grid;
  gap: var(--space-3);
}

.status-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stat-panel,
.input-panel,
.notice,
.source-card,
.preview-panel {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
}

.stat-panel {
  padding: var(--space-4);
}

.stat-panel strong {
  display: block;
  margin-top: 4px;
  font-family: var(--font-ui);
  font-size: 1.4rem;
}

.stat-panel span,
.muted {
  color: var(--color-text-tertiary);
  font-family: var(--font-ui);
  font-size: 0.82rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
}

.field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.field label,
.field-label {
  color: var(--color-text-secondary);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 700;
}

.input,
.select,
.textarea {
  width: 100%;
  padding: 11px 13px;
  background: var(--color-bg-elevated);
  color: var(--color-ink);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  outline: none;
  transition:
    border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.textarea {
  min-height: 112px;
  line-height: 1.65;
  resize: vertical;
}

.input:hover,
.select:hover,
.textarea:hover,
.input:focus,
.select:focus,
.textarea:focus {
  border-color: var(--color-brand);
}

.button-row,
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.button-row {
  align-items: center;
  margin-top: var(--space-4);
}

.chip-button {
  min-height: 36px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-family: var(--font-ui);
  font-size: 0.84rem;
}

.chip-button.is-selected {
  background: var(--color-brand-light);
  border-color: var(--color-brand);
  color: var(--color-brand);
}

.attribute-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: var(--space-5);
}

.attribute-cell {
  padding: var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
}

.attribute-cell header {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
}

.attribute-values {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.attribute-values span {
  padding: 8px;
  background: var(--color-bg-chat);
  border-radius: var(--radius-md);
  text-align: center;
  font-family: var(--font-code);
  font-weight: 700;
}

.age-adjust {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.stepper {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  overflow: hidden;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
}

.stepper button {
  min-width: 44px;
  border: none;
  background: var(--color-bg-chat);
}

.stepper input {
  width: 100%;
  min-height: 44px;
  border: none;
  border-inline: 1px solid var(--color-border-default);
  text-align: center;
  background: var(--color-bg-card);
  color: var(--color-ink);
}

.derived-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin-top: var(--space-5);
}

.derived-card {
  padding: var(--space-3);
  background: var(--color-bg-chat);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
}

.derived-card strong {
  display: block;
  margin-top: 4px;
  font-family: var(--font-code);
  font-size: 1.1rem;
}

.notice {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4);
  margin-top: var(--space-4);
  line-height: 1.65;
}

.notice.info {
  background: var(--color-blue-bg);
  border-color: rgba(36, 63, 115, 0.25);
}

.notice.warning {
  background: var(--color-warning-bg);
  border-color: rgba(154, 97, 0, 0.25);
}

.notice.error {
  background: var(--color-error-bg);
  border-color: rgba(186, 26, 26, 0.28);
}

.occupation-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  gap: var(--space-5);
}

.occupation-list {
  display: grid;
  max-height: 520px;
  overflow: auto;
  gap: var(--space-2);
  padding-right: var(--space-2);
}

.occupation-option {
  display: grid;
  gap: 4px;
  padding: var(--space-3);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  color: var(--color-ink);
  text-align: left;
}

.occupation-option.is-selected {
  border-color: var(--color-brand);
  background: var(--color-brand-light);
}

.occupation-option span {
  color: var(--color-text-tertiary);
  font-family: var(--font-ui);
  font-size: 0.76rem;
}

.detail-block {
  display: grid;
  gap: var(--space-4);
}

.formula-line {
  padding: var(--space-3);
  background: var(--color-bg-chat);
  border-radius: var(--radius-md);
  font-family: var(--font-code);
  line-height: 1.55;
}

.skill-toolbar {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) repeat(3, auto);
  gap: var(--space-3);
  align-items: end;
  margin-bottom: var(--space-4);
}

.points-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.point-meter {
  padding: var(--space-3);
  background: var(--color-bg-chat);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
}

.point-meter strong {
  display: block;
  font-family: var(--font-code);
  font-size: 1.2rem;
}

.skill-table-wrap {
  overflow: auto;
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
}

.skill-table {
  width: 100%;
  min-width: 880px;
  border-collapse: collapse;
  background: var(--color-bg-card);
}

.skill-table th,
.skill-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border-subtle);
  text-align: left;
  vertical-align: middle;
}

.skill-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--color-bg-chat);
  color: var(--color-text-secondary);
  font-family: var(--font-ui);
  font-size: 0.78rem;
}

.skill-table td.number {
  font-family: var(--font-code);
  font-weight: 700;
}

.mini-input {
  width: 76px;
  min-height: 36px;
  padding: 6px 8px;
  background: var(--color-bg-elevated);
  color: var(--color-ink);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
}

.skill-name-input {
  width: min(220px, 100%);
  min-height: 36px;
  padding: 6px 8px;
  background: var(--color-bg-elevated);
  color: var(--color-ink);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
}

.background-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.background-card {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
}

.background-card.full {
  grid-column: 1 / -1;
}

.random-result {
  min-height: 52px;
  padding: var(--space-3);
  background: var(--color-bg-chat);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.asset-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.asset-item {
  padding: var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
}

.asset-item strong {
  display: block;
  margin-top: 6px;
  font-family: var(--font-ui);
  font-size: 1.05rem;
}

.output-box {
  width: 100%;
  min-height: 420px;
  padding: var(--space-4);
  background: var(--color-bg-card);
  color: var(--color-ink);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  font-family: var(--font-code);
  font-size: 0.9rem;
  line-height: 1.65;
}

.preview-panel {
  padding: var(--space-4);
}

.preview-panel + .preview-panel {
  margin-top: var(--space-4);
}

.preview-title {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  align-items: center;
  margin-bottom: var(--space-3);
}

.preview-title h2 {
  font-size: 1.2rem;
}

.preview-kv {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 12px;
  font-family: var(--font-ui);
  font-size: 0.84rem;
}

.preview-kv dt {
  color: var(--color-text-tertiary);
}

.preview-kv dd {
  margin: 0;
  font-weight: 750;
}

.mini-attr-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.mini-attr {
  padding: 8px;
  background: var(--color-bg-chat);
  border-radius: var(--radius-sm);
  text-align: center;
  font-family: var(--font-code);
  font-weight: 750;
}

.preview-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.preview-list li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-chat);
  color: var(--color-text-secondary);
  font-family: var(--font-ui);
  font-size: 0.74rem;
  font-weight: 700;
}

.tag.ok {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.tag.warn {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.tag.error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.modal {
  width: min(980px, calc(100vw - 32px));
  max-height: min(820px, calc(100vh - 32px));
  padding: 0;
  background: transparent;
  border: none;
}

.modal::backdrop {
  background: rgba(20, 16, 14, 0.54);
}

.modal-frame {
  display: grid;
  max-height: min(820px, calc(100vh - 32px));
  overflow: hidden;
  background: var(--color-bg-base);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lifted);
}

.modal-frame.compact {
  max-width: 620px;
  margin: 0 auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  align-items: start;
  padding: var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
}

.modal-body {
  overflow: auto;
  padding: var(--space-5);
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.source-card {
  padding: var(--space-4);
  overflow: hidden;
}

.source-card.full {
  grid-column: 1 / -1;
}

.formula-search {
  display: grid;
  gap: var(--space-3);
}

.formula-results {
  display: grid;
  gap: 8px;
  max-height: 300px;
  overflow: auto;
  margin-top: var(--space-3);
}

.formula-row {
  padding: 9px 10px;
  background: var(--color-bg-chat);
  border-radius: var(--radius-sm);
  font-family: var(--font-code);
  font-size: 0.78rem;
  line-height: 1.5;
}

.demo-overlay {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 35;
  width: min(520px, calc(100vw - 32px));
  pointer-events: none;
}

.demo-overlay[hidden] {
  display: none;
}

.demo-card {
  position: relative;
  display: grid;
  gap: var(--space-4);
  overflow: hidden;
  padding: var(--space-5);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lifted);
  pointer-events: auto;
  animation: demo-card-enter 520ms var(--ease-literary) both;
}

.demo-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(154, 64, 33, 0.16), transparent 34%),
    linear-gradient(270deg, rgba(0, 103, 104, 0.12), transparent 42%);
  pointer-events: none;
}

.demo-card > * {
  position: relative;
}

.demo-card p:not(.eyebrow) {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.demo-card-top {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: var(--space-3);
  align-items: center;
}

.demo-step-mark {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  background: var(--color-ink);
  color: var(--color-bg-card);
  border-radius: var(--radius-md);
  font-family: var(--font-code);
  font-size: 1.15rem;
  font-weight: 800;
}

.demo-heading {
  min-width: 0;
}

.demo-heading h3 {
  margin-top: 3px;
  font-size: 1.22rem;
}

.demo-progress {
  height: 8px;
  overflow: hidden;
  background: var(--color-bg-chat);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-pill);
}

.demo-progress span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--color-brand), var(--color-teal));
  border-radius: inherit;
  transition: width 500ms var(--ease-literary);
}

.demo-result {
  display: grid;
  gap: 5px;
  padding: var(--space-3);
  background: var(--color-bg-chat);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
}

.demo-result span {
  color: var(--color-text-tertiary);
  font-family: var(--font-ui);
  font-size: 0.76rem;
  font-weight: 750;
}

.demo-result strong {
  color: var(--color-ink);
  line-height: 1.55;
}

.demo-actions {
  justify-content: flex-end;
}

.demo-focus {
  position: relative;
  outline: 3px solid rgba(154, 64, 33, 0.72);
  outline-offset: 5px;
  box-shadow:
    0 0 0 9999px rgba(32, 27, 24, 0.08),
    0 16px 48px rgba(154, 64, 33, 0.16);
}

.demo-pulse {
  animation: demo-target-pulse 1050ms var(--ease-literary) both;
}

html.demo-running .nav-step.is-active .step-number {
  animation: demo-nav-pulse 1400ms var(--ease-literary) infinite;
}

.toast-container {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 40;
  display: grid;
  gap: 8px;
}

.toast {
  max-width: 360px;
  padding: 12px 14px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lifted);
  font-family: var(--font-ui);
  animation: fade-up var(--duration-medium) var(--ease-literary) both;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes demo-card-enter {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes demo-target-pulse {
  0% {
    outline-color: rgba(154, 64, 33, 0.2);
    transform: scale(0.998);
  }
  45% {
    outline-color: rgba(0, 103, 104, 0.82);
    transform: scale(1.004);
  }
  100% {
    outline-color: rgba(154, 64, 33, 0.72);
    transform: scale(1);
  }
}

@keyframes demo-nav-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(154, 64, 33, 0.28);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(154, 64, 33, 0);
  }
}

@media (max-width: 1280px) {
  .app-shell {
    grid-template-columns: minmax(200px, 250px) minmax(0, 1fr);
  }

  .sheet-preview {
    position: static;
    grid-column: 2;
    height: auto;
    border-left: none;
    border-top: 1px solid var(--color-border-subtle);
  }
}

@media (max-width: 900px) {
  .app-shell {
    display: flex;
    flex-direction: column;
  }

  .topbar {
    order: 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .sidebar,
  .sheet-preview {
    position: static;
    height: auto;
    border: none;
  }

  .main-workspace {
    order: 1;
  }

  .sidebar {
    order: 2;
  }

  .sheet-preview {
    order: 3;
  }

  .step-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .main-workspace {
    padding: var(--space-4);
  }

  .intro-grid,
  .occupation-layout,
  .background-grid,
  .source-grid {
    grid-template-columns: 1fr;
  }

  .status-grid,
  .form-grid,
  .attribute-grid,
  .derived-grid,
  .age-adjust,
  .asset-grid,
  .points-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .skill-toolbar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .topbar-actions,
  .button-row,
  .chip-row {
    width: 100%;
  }

  .icon-text-button,
  .primary-button,
  .secondary-button,
  .ghost-button {
    flex: 1 1 auto;
  }

  .status-grid,
  .form-grid,
  .attribute-grid,
  .derived-grid,
  .age-adjust,
  .asset-grid,
  .points-bar,
  .step-nav {
    grid-template-columns: 1fr;
  }

  .section-header {
    flex-direction: column;
  }

  .demo-overlay {
    right: 16px;
    bottom: 16px;
  }

  .demo-card {
    padding: var(--space-4);
  }

  .demo-card-top {
    grid-template-columns: 46px minmax(0, 1fr);
  }

  .demo-step-mark {
    width: 46px;
    height: 46px;
    font-size: 0.96rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .demo-card,
  .demo-pulse,
  html.demo-running .nav-step.is-active .step-number {
    animation: none;
  }

  .demo-progress span {
    transition: none;
  }
}