.theme-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 8px; flex-shrink: 0; width: 50px; min-height: 50px; padding: 12px; border: 1px solid var(--navy); border-radius: 7px; color: var(--navy); background: transparent; cursor: pointer; }
.theme-toggle:hover { color: var(--blue); border-color: var(--blue); }
.theme-toggle svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.theme-toggle-label, .theme-sun { display: none; }
[data-theme='dark'] .theme-moon { display: none; }
[data-theme='dark'] .theme-sun { display: block; }
html[data-theme='dark'] { color-scheme: dark; --blue: #7f9fce; --blue2: #91abd1; --navy: #edf2fc; --navy2: #101c30; --text: #b7c4d9; --muted: #9eafc9; --line: #2a3951; --soft: #172438; }
html[data-theme='light'] { color-scheme: light; }
[data-theme='dark'] body { background: #0c1524; color: var(--navy); }
[data-theme='dark'] .site-nav { background: #0c1524; }
[data-theme='dark'] .site-nav-panel { background: #0c1524; border-color: var(--line); }
[data-theme='dark'] .site-nav-brand img { content: url('/assets/images/logo-dark.svg'); }
[data-theme='dark'] .hero { background: radial-gradient(circle at 75% 80%, #172e4c, transparent 48%), #0c1524; }
[data-theme='dark'] .hero::before { opacity: .12; }
[data-theme='dark'] .industry-strip, [data-theme='dark'] .service-card, [data-theme='dark'] .work-card, [data-theme='dark'] .contact-box { background: #142135; }
[data-theme='dark'] .industry { color: var(--navy); }
[data-theme='dark'] .work-section, [data-theme='dark'] .bg-light { background: #101c2d !important; }
[data-theme='dark'] .scale { background: #14233b; }
[data-theme='dark'] .services-art-workspace { background: #1b2b42; }
[data-theme='dark'] .services-art-software, [data-theme='dark'] .services-art-data, [data-theme='dark'] .services-art-web, [data-theme='dark'] .work-screen { background: #142135; border-color: var(--line); }
[data-theme='dark'] .services-art-note { color: var(--text); }
[data-theme='dark'] .services-art-node, [data-theme='dark'] .service-icon, [data-theme='dark'] .services-art-browser, [data-theme='dark'] .services-art-browser-top { background: #233852; }
[data-theme='dark'] .services-art-node-done, [data-theme='dark'] .services-art-website-contact { background: #1264e8; color: #fff; }
[data-theme='dark'] .work-visual, [data-theme='dark'] .screen-chart { background: #1b2b42; }
[data-theme='dark'] .screen-bar { background: #354b68; }
[data-theme='dark'] .bg-primary-subtle { background: #233f64 !important; }
[data-theme='dark'] .text-primary { color: var(--blue) !important; }
[data-theme='dark'] .btn-primary, [data-theme='dark'] .site-nav-contact { background: #3d6092; border-color: #3d6092; color: #fff; }
[data-theme='dark'] .btn-primary:hover, [data-theme='dark'] .site-nav-contact:hover { background: #486fa3; border-color: #486fa3; }
[data-theme='dark'] .btn-outline-primary { color: var(--blue); border-color: var(--blue); }
[data-theme='dark'] .btn-outline-primary:hover { background: #1264e8; border-color: #1264e8; color: #fff; }
[data-theme='dark'] .form-control, [data-theme='dark'] .form-select { background-color: #0c1524; color: var(--navy); border-color: #536680; }
[data-theme='dark'] .form-control::placeholder { color: #a3b2c9; opacity: 1; }
[data-theme='dark'] :focus-visible { outline-color: #91abd1; }
@media (max-width: 1199px) {
    .theme-toggle { width: 100%; grid-column: 1 / -1; }
    .theme-toggle-label { display: inline; font: 600 1rem var(--font-text); }
}
@media (min-width: 1200px) and (max-width: 1399px) {
    .site-nav-inner { gap: 20px; }
    .site-nav-desktop { gap: 16px; }
    .site-nav-link { padding-inline: 10px; }
}
@media (min-width: 360px) and (max-width: 1199px) {
    .site-nav-actions .site-nav-contact { grid-column: 1 / -1; }
    .theme-toggle { grid-column: auto; }
}
/* Shared page surfaces, illustrations and package comparisons. */
[data-theme='dark'] :is(.about-hero, .data-hero, .software-hero, .web-hero, .consult-hero) { background: radial-gradient(circle at 80% 25%, #172e4c, transparent 48%), #0c1524; }
[data-theme='dark'] :is(.about-hero, .data-hero, .software-hero, .web-hero, .consult-hero)::before { opacity: .12; }
[data-theme='dark'] .section-muted { background: #101c2d; }
[data-theme='dark'] :is(.mission-board, .mini-value, .feature-card, .story-card, .principle, .data-visual, .process-card, .deliverable, .platform-pill, .software-visual, .sidebar-mini, .app-main, .mini-card, .use-case, .fit-box, .pricing-card, .pricing-table, .browser, .email-visual, .hosting-card, .domain-pill, .strategy-board, .board-card, .decision-card, .dashboard, .metric, .chart-box) { background: #142135; border-color: var(--line); }
[data-theme='dark'] :is(.mission-title, .mini-value strong, .data-row strong, .platform-pill, .mini-heading, .domain-pill, .board-title, .board-card strong) { color: var(--navy); }
[data-theme='dark'] :is(.mini-value span, .data-row, .data-row.head, .mini-muted, .mini-card small, .window-title, .board-card small, .roadmap-point span, .address, .metric small) { color: var(--text); }
[data-theme='dark'] :is(.feature-icon, .feature-card .icon, .process-number, .roadmap-dot, .side-line, .workflow-line, .priority-bar) { background: #233852; }
[data-theme='dark'] :is(.mission-main, .seo-table thead, .seo-plan[open] summary) { background: #1b2e4c; color: #edf2fc; }
[data-theme='dark'] .web-benefits { background: #101c2d; color: var(--navy); }
[data-theme='dark'] :is(.browser-head, .mailbox-head, .browser-screen, .address, .pricing-table th) { background: #101c2d; border-color: var(--line); }
[data-theme='dark'] :is(.mini-title, .site-logo) { background: #91abd1; }
[data-theme='dark'] :is(.site-links span, .mini-copy, .mini-card span, .mail-lines b, .mail-lines span) { background: #435875; }
[data-theme='dark'] .data-row { border-color: var(--line); }
[data-theme='dark'] .pricing-badge { background: #1264e8; }
[data-theme='dark'] :is(.quality-good, .mission-status, .board-status, .data-visual-status, .check-list i, .pricing-list i, .hosting-list i) { color: #69d6a0; }
[data-theme='dark'] .quality-warn { color: #f0b764; }
[data-theme='dark'] .quality-bad { color: #ff9696; }
[data-theme='dark'] .form-text { color: var(--text); }
[data-theme='dark'] .text-muted { color: var(--text) !important; }
[data-theme='dark'] .border { border-color: var(--line) !important; }
:root[data-theme='dark'] .site-nav-contact[aria-current='page'] { background: #3d6092; color: #fff; }
[data-theme='dark'] .section-eyebrow { color: var(--blue) !important; }
:root:not([data-theme='dark']) #home .hero-actions .btn-primary {
    background: #1264e8;
    border-color: #1264e8;
    color: #fff;
}
:root:not([data-theme='dark']) #home .hero-actions .btn-primary:is(:hover, :focus-visible, :active) {
    background: #0757d6;
    border-color: #0757d6;
    color: #fff;
}