:root{
  color-scheme:light;
  --page:#f8fafc;--surface:#ffffff;--surface-soft:#f1f5f9;--surface-hover:#eaf1fa;
  --text:#0f172a;--muted:#475569;--border:#dce4ee;--field-border:#94a3b8;
  --accent:#1d4ed8;--primary:#1d4ed8;--primary-hover:#1e40af;--focus:#2563eb;
  --header:rgba(255,255,255,.96);--footer:#0f172a;
  --tracking:#f0f9ff;--tracking-border:#bae6fd;
  --success:#166534;--danger:#b91c1c;--notice:#ecfdf5;--notice-border:#a7f3d0;
  --shadow:0 2px 12px rgba(15,23,42,.05);
  --chart-bar:#2563eb;--chart-grid:#e2e8f0;
}
html[data-theme="dark"]{
  color-scheme:dark;
  --page:#0b1220;--surface:#131e30;--surface-soft:#1a283d;--surface-hover:#23344d;
  --text:#e6edf7;--muted:#a8b8cd;--border:#2a3c55;--field-border:#5a7392;
  --accent:#93c5fd;--primary:#2563eb;--primary-hover:#1d4ed8;--focus:#93c5fd;
  --header:rgba(11,18,32,.96);--footer:#080f1c;
  --tracking:#10253c;--tracking-border:#2d4b6b;
  --success:#86efac;--danger:#fda4af;--notice:#123329;--notice-border:#2f6850;
  --shadow:0 3px 16px rgba(0,0,0,.16);
  --chart-bar:#60a5fa;--chart-grid:#2a3c55;
}
body{background:var(--page);color:var(--text)}
.site-header{background:var(--header);border-color:var(--border)}
.card,.product-card,.catalog-filters{background:var(--surface);border-color:var(--border);box-shadow:var(--shadow)}
.muted,.helptext,.stock-code,.product-meta,.home-introduction .hero-text,.private-service-section>summary{color:var(--muted)}
.product-subtitle{color:var(--text)}
.eyebrow,.home-phone,.text-brand,.product-card-foot a{color:var(--accent)}
.btn{background:var(--primary);color:#fff}
.btn:hover{background:var(--primary-hover)}
.btn-light{color:var(--text);background:transparent;border-color:var(--field-border)}
.btn-light:hover{background:var(--surface-hover)}
.badge{color:var(--accent);background:var(--tracking)}
.tracking-strip{background:var(--tracking);border-color:var(--tracking-border)}
.card-stock-code,.introduction-preview,.selected-image-item{background:var(--surface-soft);border-color:var(--border)}
.product-card-image,.existing-image-grid img,.product-gallery a{background:var(--surface-soft);border-color:var(--border)}
.product-card-foot,.data-row{border-color:var(--border)}
input:not([type="hidden"]):not([type="checkbox"]):not([type="radio"]),textarea,select{background:var(--surface);color:var(--text);border-color:var(--field-border)}
input::placeholder,textarea::placeholder{color:var(--muted);opacity:1}
input:disabled,select:disabled,textarea:disabled{background:var(--surface-soft);color:var(--muted);opacity:1}
input[type="radio"],input[type="checkbox"]{accent-color:var(--primary)}
.errorlist,.text-red-700,.selected-image-item button,.stock-empty{color:var(--danger)}
.stock-quantity:not(.stock-empty){color:var(--success)}
.carousel-button,.image-order-controls button{background:var(--surface);color:var(--text);border-color:var(--field-border)}
.carousel-button:hover,.image-order-controls button:hover{background:var(--surface-hover)}
.site-footer{background:var(--footer)}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;min-height:40px;padding:.5rem .75rem;border:1px solid var(--border);border-radius:.75rem;background:var(--surface-soft);color:var(--text);font-size:.8rem;font-weight:600;white-space:nowrap;cursor:pointer}
.theme-toggle:hover{background:var(--surface-hover);border-color:var(--field-border)}
.theme-toggle[hidden],.theme-sun{display:none}
html[data-theme="dark"] .theme-sun{display:block}
html[data-theme="dark"] .theme-moon{display:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline-color:var(--focus)}
html[data-theme="dark"] .bg-ink{background:#0e1828}
html[data-theme="dark"] .border-stone-100,html[data-theme="dark"] .border-stone-200{border-color:var(--border)}
html[data-theme="dark"] .text-stone-500{color:var(--muted)}
html[data-theme="dark"] .bg-emerald-50{background:var(--notice)}
html[data-theme="dark"] .border-emerald-200{border-color:var(--notice-border)}
html[data-theme="dark"] .catalog-hero{background:linear-gradient(120deg,#162b49,#173e6c);border:1px solid #355778}
html[data-theme="dark"] .catalog-hero .eyebrow,html[data-theme="dark"] .hero-shell .eyebrow{color:#93c5fd}
html[data-theme="dark"] .hero-shell .btn-light{background:var(--surface);color:var(--text);border-color:var(--border)}
html[data-theme="dark"] .card-image-arrow{background:rgba(19,30,48,.95);color:var(--text);border-color:var(--field-border)}
html[data-theme="dark"] .card-image-arrow:hover{background:var(--surface-hover)}
html[data-theme="dark"] .product-card:hover{box-shadow:0 12px 28px rgba(0,0,0,.25)}
@media print{html[data-theme="dark"]{--page:#fff;--surface:#fff;--surface-soft:#f1f5f9;--text:#0f172a;--muted:#475569;--border:#cbd5e1;--accent:#1d4ed8;--success:#166534;--danger:#b91c1c}.theme-toggle{display:none}}