:root {
    color-scheme: dark;
}

html {
    scroll-padding-top: 96px;
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid #00d4ff;
    outline-offset: 4px;
}

#motion-toggle {
    position: fixed;
    right: 16px;
    bottom: 16px;
    z-index: 1100;
    padding: 8px 12px;
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 999px;
    background: rgba(10, 10, 15, .82);
    color: #d7d9e0;
    font: inherit;
    font-size: 12px;
    cursor: pointer;
    backdrop-filter: blur(12px);
    transition: transform .2s ease, border-color .2s ease;
}

#motion-toggle:hover {
    transform: translateY(-2px);
    border-color: rgba(0, 212, 255, .55);
}

.lab-nav-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.module-nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

@media (max-width: 480px) {
    .module-nav-actions .back-btn:first-child {
        display: none;
    }
}

.lab-nav-badge {
    padding: 3px 7px;
    border: 1px solid rgba(0, 212, 255, 0.35);
    border-radius: 999px;
    color: #00d4ff;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.lab-preview {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(260px, .7fr);
    gap: 40px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: clamp(32px, 5vw, 64px);
    overflow: hidden;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(123, 97, 255, 0.06));
}

.lab-preview::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: linear-gradient(to right, transparent, #000 35%, #000);
}

.lab-preview-content {
    position: relative;
    z-index: 1;
}

.lab-preview h2 {
    margin: 10px 0 18px;
    font-size: clamp(32px, 5vw, 56px);
    line-height: 1.05;
}

.lab-preview p {
    max-width: 62ch;
    color: var(--text-secondary, #a5a5b5);
    line-height: 1.8;
}

.lab-preview-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.lab-preview-links a {
    padding: 10px 14px;
    border: 1px solid rgba(0, 212, 255, .24);
    border-radius: 10px;
    color: var(--text-primary, #fff);
    text-decoration: none;
    transition: transform .2s ease, border-color .2s ease, background-color .2s ease;
}

.lab-preview-links a:hover {
    transform: translateY(-2px);
    border-color: rgba(0, 212, 255, .65);
    background: rgba(0, 212, 255, .08);
}

.lab-status {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 12px;
    padding: 22px;
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 16px;
    background: rgba(10, 10, 15, .65);
}

.lab-status-row {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    color: var(--text-secondary, #a5a5b5);
}

.lab-status-row:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.lab-status-row strong {
    color: var(--text-primary, #fff);
}

@media (max-width: 768px) {
    .lab-preview {
        grid-template-columns: 1fr;
    }

    .lab-nav-badge {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto !important;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .reveal,
    .intro-box,
    .category-card,
    .page-content {
        opacity: 1 !important;
        transform: none !important;
    }
}
/* Shared navigation and reading improvements */
html .menu-toggle {
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: inherit;
    font: inherit;
}
html .menu-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
html .menu-toggle.active span:nth-child(2) { opacity: 0; }
html .menu-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
.skip-link {
    position: fixed;
    top: 12px;
    left: 16px;
    z-index: 12000;
    padding: 12px 18px;
    border-radius: 10px;
    background: #00d4ff;
    color: #0a0a0f;
    font: 600 14px/1.5 "Segoe UI", "Microsoft YaHei", sans-serif;
    text-decoration: none;
    transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}
html .page-transition { display: none; }
html .page-content { opacity: 1; transform: none; animation: none; }
main:focus { outline: none; }
html:not(.js) .reveal,
html:not(.js) .intro-box,
html:not(.js) .core-value,
html:not(.js) .category-card { opacity: 1; transform: none; }
@media (max-width: 768px) {
    html .nav-links.active { max-height: calc(100dvh - 92px); overflow-y: auto; }
    html:not(.js) .nav-container { position: static; }
    html:not(.js) .nav-bar { flex-wrap: wrap; }
    html:not(.js) .nav-links { display: flex; position: static; width: 100%; }
    html:not(.js) .menu-toggle { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    html .hero-title, html .hero-subtitle, html .showcase, html .hero-badge {
        opacity: 1;
        transform: none;
    }
}