.feature-theme-toggle {
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    display: inline-grid;
    place-items: center;
    padding: 0;
    border: 1px solid #dbe4ee;
    border-radius: 8px;
    background: #ffffff;
    color: #475569;
    font: inherit;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
}

.feature-theme-toggle:hover {
    border-color: #9bd4ce;
    color: #0f766e;
}

.feature-theme-toggle .theme-icon-sun,
html.dark-mode .feature-theme-toggle .theme-icon-moon {
    display: none;
}

html.dark-mode .feature-theme-toggle .theme-icon-sun {
    display: inline;
}

html.dark-mode {
    color-scheme: dark;
}

html.dark-mode .feature-theme-toggle {
    border-color: #334155;
    background: #111827;
    color: #cbd5e1;
}

html.dark-mode body.ecom-genesis-page,
html.dark-mode body.ppt-creator-page,
html.dark-mode body.ecom-canvas-page {
    background: #0a1018;
    color: #e5edf7;
}

/* 电商商品图 */
html.dark-mode .ecom-genesis-page .eg-shell {
    background: #0a1018;
}

html.dark-mode .ecom-genesis-page .eg-topbar {
    border-color: #263244;
    background: rgba(10, 16, 24, 0.94);
}

html.dark-mode .ecom-genesis-page .eg-back,
html.dark-mode .ecom-genesis-page .eg-nav a,
html.dark-mode .ecom-genesis-page .eg-subtitle,
html.dark-mode .ecom-genesis-page .eg-panel-head p,
html.dark-mode .ecom-genesis-page .eg-history-meta,
html.dark-mode .ecom-genesis-page .eg-result-meta,
html.dark-mode .ecom-genesis-page .eg-status {
    color: #94a3b8;
}

html.dark-mode .ecom-genesis-page .eg-panel,
html.dark-mode .ecom-genesis-page .eg-flow span,
html.dark-mode .ecom-genesis-page .eg-result-card,
html.dark-mode .ecom-genesis-page .eg-history-item,
html.dark-mode .ecom-genesis-page .eg-plan-item,
html.dark-mode .ecom-genesis-page .eg-insight,
html.dark-mode .ecom-genesis-page .eg-suite-style {
    border-color: #263244;
    background: #101923;
    color: #e5edf7;
    box-shadow: none;
}

html.dark-mode .ecom-genesis-page .eg-dropzone,
html.dark-mode .ecom-genesis-page .eg-mode-tabs,
html.dark-mode .ecom-genesis-page .eg-prompt-choice,
html.dark-mode .ecom-genesis-page .eg-empty,
html.dark-mode .ecom-genesis-page .eg-style-brief,
html.dark-mode .ecom-genesis-page .eg-plan-control,
html.dark-mode .ecom-genesis-page .eg-discount-notice {
    border-color: #334155;
    background: #0d1620;
    color: #cbd5e1;
}

html.dark-mode .ecom-genesis-page .eg-mode-tabs button,
html.dark-mode .ecom-genesis-page .eg-btn-secondary,
html.dark-mode .ecom-genesis-page .eg-link-btn,
html.dark-mode .ecom-genesis-page .eg-prompt-choice button {
    border-color: #334155;
    background: #111c28;
    color: #cbd5e1;
}

html.dark-mode .ecom-genesis-page .eg-mode-tabs button.is-active,
html.dark-mode .ecom-genesis-page .eg-mode-tabs button:hover {
    border-color: #2dd4bf;
    background: rgba(13, 148, 136, 0.18);
    color: #5eead4;
}

html.dark-mode .ecom-genesis-page input:not([type="color"]),
html.dark-mode .ecom-genesis-page select,
html.dark-mode .ecom-genesis-page textarea {
    border-color: #334155;
    background: #0b141e;
    color: #e5edf7;
}

html.dark-mode .ecom-genesis-page .eg-panel-head h2,
html.dark-mode .ecom-genesis-page .eg-plan-item h3,
html.dark-mode .ecom-genesis-page .eg-history-main strong,
html.dark-mode .ecom-genesis-page .eg-result-card strong {
    color: #f8fafc;
}

/* PPT 创作 */
html.dark-mode .ppt-creator-page .pc-shell {
    background: #0a1018;
}

html.dark-mode .ppt-creator-page .pc-topbar {
    border-color: #263244;
    background: rgba(10, 16, 24, 0.94);
}

html.dark-mode .ppt-creator-page .pc-back,
html.dark-mode .ppt-creator-page .pc-nav a,
html.dark-mode .ppt-creator-page .pc-link-btn,
html.dark-mode .ppt-creator-page .pc-subtitle,
html.dark-mode .ppt-creator-page .pc-panel-head p,
html.dark-mode .ppt-creator-page .pc-status,
html.dark-mode .ppt-creator-page .pc-history-meta {
    color: #94a3b8;
}

html.dark-mode .ppt-creator-page .pc-panel,
html.dark-mode .ppt-creator-page .pc-flow span,
html.dark-mode .ppt-creator-page .pc-slide-card,
html.dark-mode .ppt-creator-page .pc-history-item {
    border-color: #263244;
    background: #101923;
    color: #e5edf7;
    box-shadow: none;
}

html.dark-mode .ppt-creator-page .pc-source,
html.dark-mode .ppt-creator-page .pc-form-grid input,
html.dark-mode .ppt-creator-page .pc-form-grid select,
html.dark-mode .ppt-creator-page .pc-slide-fields input,
html.dark-mode .ppt-creator-page .pc-slide-fields textarea,
html.dark-mode .ppt-creator-page .pc-prompt-choice,
html.dark-mode .ppt-creator-page .pc-theme-strip,
html.dark-mode .ppt-creator-page .pc-empty,
html.dark-mode .ppt-creator-page .pc-history-empty {
    border-color: #334155;
    background: #0b141e;
    color: #cbd5e1;
}

html.dark-mode .ppt-creator-page .pc-btn-secondary,
html.dark-mode .ppt-creator-page .pc-tool-btn,
html.dark-mode .ppt-creator-page .pc-prompt-choice button {
    border-color: #334155;
    background: #111c28;
    color: #cbd5e1;
}

html.dark-mode .ppt-creator-page .pc-panel-head h2,
html.dark-mode .ppt-creator-page .pc-history-title,
html.dark-mode .ppt-creator-page .pc-slide-fields strong {
    color: #f8fafc;
}

/* 无限画布：只切换编辑器外壳，画板内容和导出颜色保持不变。 */
html.dark-mode .ecom-canvas-page .ecom-shell,
html.dark-mode .ecom-canvas-page .ecom-canvas-wrap {
    background: #09111a;
}

html.dark-mode .ecom-canvas-page .ecom-toolbar,
html.dark-mode .ecom-canvas-page .ecom-toolrail,
html.dark-mode .ecom-canvas-page .ecom-sidebar,
html.dark-mode .ecom-canvas-page .ecom-sidebar-tabs,
html.dark-mode .ecom-canvas-page .ecom-inspector-tabs {
    border-color: #263244;
    background: #0f1823;
    color: #e5edf7;
}

html.dark-mode .ecom-canvas-page .ecom-toolbar-center,
html.dark-mode .ecom-canvas-page .ecom-panel,
html.dark-mode .ecom-canvas-page .ecom-detail-kit,
html.dark-mode .ecom-canvas-page .ecom-ai-card,
html.dark-mode .ecom-canvas-page .ecom-layer-item,
html.dark-mode .ecom-canvas-page .ecom-analysis-item,
html.dark-mode .ecom-canvas-page .ecom-artboard-chip,
html.dark-mode .ecom-canvas-page .ecom-project-chip,
html.dark-mode .ecom-canvas-page .ecom-template-chip,
html.dark-mode .ecom-canvas-page .ecom-reference-chip {
    border-color: #334155;
    background: #111c28;
    color: #dbe7f3;
}

html.dark-mode .ecom-canvas-page .ecom-icon-btn,
html.dark-mode .ecom-canvas-page .ecom-rail-btn,
html.dark-mode .ecom-canvas-page .ecom-back,
html.dark-mode .ecom-canvas-page .ecom-btn-secondary,
html.dark-mode .ecom-canvas-page .ecom-sidebar-tabs button,
html.dark-mode .ecom-canvas-page .ecom-inspector-tabs button,
html.dark-mode .ecom-canvas-page .ecom-link-btn,
html.dark-mode .ecom-canvas-page .ecom-panel-title-btn,
html.dark-mode .ecom-canvas-page .ecom-mini-btn,
html.dark-mode .ecom-canvas-page .ecom-kit-buttons button,
html.dark-mode .ecom-canvas-page .ecom-kit-import,
html.dark-mode .ecom-canvas-page .ecom-kit-secondary {
    border-color: #334155;
    background: #101923;
    color: #cbd5e1;
}

html.dark-mode .ecom-canvas-page .ecom-icon-btn:hover,
html.dark-mode .ecom-canvas-page .ecom-rail-btn:hover,
html.dark-mode .ecom-canvas-page .ecom-icon-btn.is-active,
html.dark-mode .ecom-canvas-page .ecom-rail-btn.is-active,
html.dark-mode .ecom-canvas-page .ecom-sidebar-tabs button.is-active,
html.dark-mode .ecom-canvas-page .ecom-inspector-tabs button.is-active {
    border-color: #2dd4bf;
    background: rgba(13, 148, 136, 0.18);
    color: #5eead4;
}

html.dark-mode .ecom-canvas-page input:not([type="color"]),
html.dark-mode .ecom-canvas-page select,
html.dark-mode .ecom-canvas-page textarea {
    border-color: #334155;
    background: #0b141e;
    color: #e5edf7;
}

html.dark-mode .ecom-canvas-page .ecom-stage-bg {
    background-color: #0a121c;
    background-image: linear-gradient(#1f2b3b 1px, transparent 1px), linear-gradient(90deg, #1f2b3b 1px, transparent 1px);
}

html.dark-mode .ecom-canvas-page .ecom-stage-label,
html.dark-mode .ecom-canvas-page .ecom-bottom-bar {
    border-color: #334155;
    background: rgba(15, 24, 35, 0.92);
    color: #94a3b8;
}

html.dark-mode .ecom-canvas-page .ecom-toolbar-divider {
    background: #334155;
}

html.dark-mode .ecom-canvas-page .ecom-panel-title,
html.dark-mode .ecom-canvas-page .ecom-layer-name,
html.dark-mode .ecom-canvas-page .ecom-analysis-main strong {
    color: #f8fafc;
}

@media (max-width: 720px) {
    .feature-theme-toggle {
        width: 34px;
        height: 34px;
    }
}