feat(website): brand guide page + NodeMark/NodeLockup variants

Replace the /brand stub with the full Brand Guide from the Claude Design
handoff (cover, logo, color, typography, voice, applications), rendered inside
the site layout, English-only, with illustrative copy adapted to Dezky's real
EU-sovereign voice. Extend NodeMark with a `variant` (donut/solid/outline) and
NodeLockup with a separate `wordmark` colour so the mark reads correctly on
dark surfaces. Drops the old brand stub copy.

apps/website/utils/landingCopy.ts

@@ -156,22 +156,6 @@ export const COPY = {
         addressLabel: 'Adresse',
         cvrLabel: 'CVR',
       },
-      brand: {
-        label: 'brand',
-        title: 'Brug vores brand korrekt.',
-        intro: 'Retningslinjer for navn, logo og farver. Skal du bruge logofiler, så kontakt os.',
-        rules: [
-          ['Navn', 'Altid “Dezky” — ét ord, stort begyndelsesbogstav. Aldrig i versaler i løbende tekst.'],
-          ['Logo', 'Brug node-mærket med tilstrækkelig luft omkring. Forvræng, rotér eller omfarv det ikke.'],
-          ['Tone', 'Direkte, teknisk, uden hype. Vi sælger ikke med frygt — vi forklarer.'],
-        ],
-        colorsLabel: 'Farver',
-        colors: [
-          ['Signal', '#D4FF3A'],
-          ['Carbon', '#0A0A0A'],
-          ['Bone', '#F4F3EE'],
-        ],
-      },
       roadmap: {
         label: 'roadmap',
         title: 'Hvor vi er på vej hen.',
@@ -443,22 +427,6 @@ export const COPY = {
         addressLabel: 'Address',
         cvrLabel: 'Company reg.',
       },
-      brand: {
-        label: 'brand',
-        title: 'Use our brand correctly.',
-        intro: 'Guidelines for the name, logo and colours. Need logo files? Get in touch.',
-        rules: [
-          ['Name', 'Always “Dezky” — one word, capital D. Never all caps in running text.'],
-          ['Logo', 'Use the node mark with enough clear space. Don\'t distort, rotate or recolour it.'],
-          ['Tone', 'Direct, technical, no hype. We don\'t sell with fear — we explain.'],
-        ],
-        colorsLabel: 'Colours',
-        colors: [
-          ['Signal', '#D4FF3A'],
-          ['Carbon', '#0A0A0A'],
-          ['Bone', '#F4F3EE'],
-        ],
-      },
       roadmap: {
         label: 'roadmap',
         title: 'Where we\'re headed.',