Configuration

Open Add-ons → Manage add-ons → Nordhaus theme → Settings.

Theme

Setting	Default	Description
Sticky header	On	Keeps a compact header (logo, search, bag) at the top while shoppers scroll.
Mobile bottom bar	On	Home, menu, search, account and bag as a floating tab bar at the bottom of the screen on phones.
“More” menu for long top menus	On	Menu-bar items that do not fit on one line move into a “More” dropdown instead of wrapping to a second row.
Product card style	Theme default	Theme default (the wall-and-floor well with the details under it), Outlined, Plate or Minimal.
Show the second image on hover	Off	Product grids show the next product image when the pointer is over a card. Nordhaus keeps it off: the additional images are the other materials of the piece.
Product page layout	Large gallery	Large gallery (the 4:3 image beside a details column that follows on scroll) or Classic (the standard Responsive product page).
Subtle animations	On	Sections fade in while scrolling, hotspots pulse, pieces rise on hover. Visitors who prefer reduced motion never see animations.
Install the demo content when the theme is activated	On	When a storefront switches to this theme, the next admin page adds the Nordhaus demo catalogue (seven rooms plus Lighting, Textiles and Decor with 27 product types, 43 products with one image per material, Material, Style, Delivery time and dimension features with filters, two promotions with real end dates, reviews, journal posts, a main menu and, on Multi-Vendor, four maker shops) and points the homepage blocks of the theme layout at it. Runs once per storefront (re-activating or upgrading adds nothing). Your own products, categories and pages are never changed; delete demo items you do not need in Products, Categories and Website → Blog. Turn it off before activating the theme to start with an empty design.

Nordhaus

Setting	Default	Description
Wall-and-floor product wells	On	Every product image stands on a floor line in front of a wall in the colours of the style. Works best with cut-out product images on a transparent background (the theme’s recommended settings turn off the white thumbnail background). Turn it off for photos on a white background: the wells become plain light panels.
“Will it fit?” on product pages	On	Front and side drawings with the dimensions and a doorway check, from the features with the codes WIDTH_CM, DEPTH_CM, HEIGHT_CM (and SEAT_H_CM, DOOR_MIN_CM). Products without width and height do not show it.
Monthly price line	12 months	“or $X/mo over N months” under the price of products from $199 on cards, the spotlight and product pages: the displayed price divided by the number of months. Choose Off to hide it. Offer a matching financing payment method before you show the line.
Free samples link	(empty)	Where “Order free samples” in the material library leads, for example products.view?product_id=123 (your sample box product) or a page. Empty: a search for “sample”.

Colours and fonts: Website → Themes → Theme editor (per style).

License

The licence status is shown in a License card at the top of the add-on page, above the tabs. The License tab holds the key itself. The key is stored once for the whole installation.

The card shows the status in colour (green valid, blue development host or the 14-day period of a new installation, amber when the licence server could not be reached, red when the theme design is switched off), what happens when it is switched off, the licensed domain and every storefront with its result, the end of the updates period, the last and next check, and the actions Change license key, Check now, Manage license and Buy a license.

Setting	Description
License key	Your Kavio Labs licence key (KAVIO-XXXX-XXXX-XXXX-XXXX, from My licenses on cs-cart.kaviolabs.com) or your CS-Cart Marketplace license number. If you entered the Marketplace number in Add-ons → Manage add-ons, leave this empty.
License status	Points to the License card and explains what the check sends.

What the licence covers. The base domain you entered at purchase (for example example.com) and every subdomain of it. Local development hosts (localhost, private IP addresses, *.localhost, *.test, *.local, *.example, *.invalid) are always allowed. A store on a different base domain needs its own licence.

When it checks. When you save the key and then once a day, only in the admin panel or from cron, never while customers browse the storefront:

php /path/to/store/admin.php --dispatch=kv_theme_nordhaus_license.check

What is sent. Only this, to https://cs-cart.kaviolabs.com: the licence key, the add-on ID and version, the host names of your storefronts, your CS-Cart version and edition, and a random one-time value. No customer, order or personal data. The answer is digitally signed.

What happens without a valid licence. A new installation works for 14 days without a key. If the licence server cannot be reached, the theme keeps working for 14 days after the first failed check. After that, or with an invalid, revoked or other-domain licence, the Nordhaus design is switched off: the storefront shows the standard Responsive look (standard stylesheet and menu, the Nordhaus homepage sections hidden; the colours of the active style stay). Cart, checkout, orders and customer accounts keep working; visitors see no message. The design is also switched off while the add-on is disabled or uninstalled.

While a storefront uses Nordhaus and the design is switched off, every admin page shows a notice that names the theme, the reason (no key after the trial period, invalid key, revoked, other domain, licence not verified for 14 days) and how to fix it, and Website → Themes shows the same text above the current theme.

Status (card)	Colour	Storefront
Valid	Green	Nordhaus design.
Development host	Blue	Nordhaus design.
Pending · N days left	Blue	Nordhaus design for 14 days after installation.
Grace period · N days left	Amber	Nordhaus design for 14 days after the first failed check.
Not activated, Invalid key, Revoked, Domain mismatch, Not verified	Red	Standard Responsive look; the store keeps working.

When your updates period ends, the theme keeps working; only updates and support stop. Licence information appears in the admin panel only, for administrators who may manage add-ons; vendors and customers never see it.