VanVan-Seite: Fotos getauscht (echtes Foto <-> Team-Dogi-Grafik), Silber-Button aufgewertet und Buttons vergrößert

- Hauptfoto oben ("Wer ich bin") zeigt jetzt das echte VanVan-Foto
  (vorher: illustrierte Team-Dogi-Grafik), diese wandert dafür in den
  "Was Team Dogi für mich bedeutet"-Bereich
- .btn-silver ("Coming soon") komplett neu gestaltet: Chrome-Metallic-
  Textverlauf, rotierender Metallrand-Schimmer, funkelnde Sparkle-Akzente,
  pulsierender Halo-Glow statt reiner Farbkopie von .btn-tiktok
- .btn-tiktok und .btn-silver vergrößert (Padding/Schrift), wirkt sich
  automatisch auf alle TikTok-Buttons site-weit aus

assets/css/main.css

@@ -548,12 +548,12 @@ header.site-header {
   overflow: hidden;
   display: inline-flex;
   align-items: center;
-  gap: .4rem;
-  padding: .6rem 1.5rem;
+  gap: .5rem;
+  padding: .85rem 2.1rem;
   border-radius: 999px;
   color: #fff;
   font-weight: 700;
-  font-size: .95rem;
+  font-size: 1.08rem;
   background: #0b0e14;
   border: 1px solid rgba(255, 255, 255, .16);
   text-decoration: none;
@@ -598,63 +598,103 @@ header.site-header {
   .btn-tiktok::before, .btn-tiktok::after { animation: none; }
 }
 
-/* Silberner "Coming soon"-Button: exakt derselbe Polarlicht-Mechanismus
-   wie .btn-tiktok, nur in gedämpftem Silber statt Markenfarben — für
-   Dinge, die noch nicht live sind (z.B. VanVans zweiter Kanal). */
+/* Silberner "Coming soon"-Button: eigener, deutlich edlerer Look als
+   .btn-tiktok — echtes Chrome-Metallic-Textglitzern, rotierender
+   Metallrand-Schimmer, zwei funkelnde Sparkle-Akzente und ein sanft
+   pulsierender Halo-Glow. Für Dinge, die noch nicht live sind
+   (z.B. VanVans zweiter Kanal), aber trotzdem besonders auffallen sollen. */
 .btn-silver {
   position: relative;
   isolation: isolate;
-  overflow: hidden;
+  overflow: visible;
   display: inline-flex;
   align-items: center;
-  gap: .4rem;
-  padding: .6rem 1.5rem;
+  gap: .55rem;
+  padding: .95rem 2.4rem;
   border-radius: 999px;
   color: #fff;
-  font-weight: 700;
-  font-size: .95rem;
-  background: #0b0e14;
-  border: 1px solid rgba(255, 255, 255, .16);
+  font-weight: 800;
+  font-size: 1.1rem;
+  letter-spacing: .02em;
+  background: linear-gradient(160deg, #14161c, #0b0e14 55%, #1a1d24);
+  border: 1px solid rgba(255, 255, 255, .22);
   text-decoration: none;
   transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
-  box-shadow: 0 6px 18px rgba(0, 0, 0, .35);
+  box-shadow: 0 6px 18px rgba(0, 0, 0, .4),
+              0 0 0 1px rgba(255, 255, 255, .03) inset;
+  animation: btn-silver-halo 3.2s ease-in-out infinite;
 }
-.btn-silver span {
+.btn-silver-text {
   position: relative;
   z-index: 2;
-  text-shadow: 0 1px 3px rgba(0, 0, 0, .6), 0 0 14px rgba(0, 0, 0, .35);
+  background: linear-gradient(100deg, #9aa4b2 0%, #ffffff 28%, #e6ebf2 42%, #c7ccd1 58%, #ffffff 76%, #9aa4b2 100%);
+  background-size: 260% 100%;
+  -webkit-background-clip: text;
+  background-clip: text;
+  color: transparent;
+  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, .6));
+  animation: btn-silver-text-shine 3.6s linear infinite;
 }
+.btn-silver-spark {
+  position: relative;
+  z-index: 2;
+  display: inline-block;
+  font-size: .9em;
+  filter: drop-shadow(0 0 4px rgba(255, 255, 255, .8));
+  animation: btn-silver-twinkle 1.8s ease-in-out infinite;
+}
+.btn-silver-spark:last-child { animation-delay: .9s; }
 .btn-silver::before {
   content: "";
   position: absolute;
-  inset: -60%;
+  inset: -1px;
   z-index: 0;
-  background:
-    radial-gradient(circle at 25% 30%, rgba(230, 235, 242, .85), transparent 55%),
-    radial-gradient(circle at 75% 70%, rgba(190, 200, 215, .7), transparent 58%);
-  filter: blur(9px) saturate(1.2);
-  animation: nav-cta-aurora 9s ease-in-out infinite alternate;
+  border-radius: inherit;
+  padding: 1.5px;
+  background: conic-gradient(from 0deg, #eef1f5, #9aa4b2, #ffffff, #c7ccd1, #7d8794, #eef1f5);
+  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
+  -webkit-mask-composite: xor;
+  mask-composite: exclude;
+  animation: btn-silver-shine-rotate 5s linear infinite;
 }
 .btn-silver::after {
   content: "";
   position: absolute;
   inset: 0;
   z-index: 1;
-  background: linear-gradient(115deg, transparent 35%, rgba(255, 255, 255, .4) 49%, transparent 63%);
+  border-radius: inherit;
+  background: linear-gradient(115deg, transparent 35%, rgba(255, 255, 255, .5) 49%, transparent 63%);
   background-size: 240% 100%;
   mix-blend-mode: overlay;
   animation: nav-cta-shimmer 4.5s linear infinite;
   pointer-events: none;
 }
 .btn-silver:hover {
-  transform: translateY(-1px);
-  border-color: rgba(255, 255, 255, .32);
-  box-shadow: 0 10px 26px rgba(0, 0, 0, .45),
-              0 0 22px rgba(220, 226, 235, .3),
-              0 0 22px rgba(190, 200, 215, .25);
+  transform: translateY(-1px) scale(1.02);
+  border-color: rgba(255, 255, 255, .4);
+  box-shadow: 0 10px 30px rgba(0, 0, 0, .5),
+              0 0 26px rgba(230, 235, 242, .45),
+              0 0 26px rgba(190, 200, 215, .35);
+}
+@keyframes btn-silver-shine-rotate {
+  to { transform: rotate(360deg); }
+}
+@keyframes btn-silver-text-shine {
+  0% { background-position: 0% 50%; }
+  100% { background-position: 260% 50%; }
+}
+@keyframes btn-silver-twinkle {
+  0%, 100% { opacity: .45; transform: scale(.85) rotate(0deg); }
+  50% { opacity: 1; transform: scale(1.15) rotate(15deg); }
+}
+@keyframes btn-silver-halo {
+  0%, 100% { box-shadow: 0 6px 18px rgba(0, 0, 0, .4), 0 0 14px rgba(200, 208, 220, .18); }
+  50% { box-shadow: 0 6px 18px rgba(0, 0, 0, .4), 0 0 26px rgba(230, 235, 242, .4); }
 }
 @media (prefers-reduced-motion: reduce) {
-  .btn-silver::before, .btn-silver::after { animation: none; }
+  .btn-silver, .btn-silver::before, .btn-silver::after, .btn-silver-text, .btn-silver-spark {
+    animation: none;
+  }
 }
 
 /* Plattform-Karten mit echten Markenfarben (z.B. links.html-Übersicht):