feat(landing): titlu ROMFAST AUTOPASS, calculator pe trimiteri, grila preturi uniforma

- header cu titlu ROMFAST AUTOPASS + subtitlu Gateway RAR, nav la dreapta
- title/meta description aliniate pe mesajul "incarci fisierul, coduri o data"
- hero: subtext rescris + linie beneficiu "Gratuit pana la 60 de trimiteri/luna"
- scoase toate referintele la card bancar
- calculator: slider pe Trimiteri/luna (default 100), cifre uniforme grid 2x2,
  rotunjite fara zecimale
- preturi: carduri egale cu aceleasi componente (bifa/minus), Standard 49 lei +
  badge Popular + buton verde, Gratuit fara badge, "* fara TVA" la preturi
- sectiune separata beneficiu "30 de zile Pro gratuit"; FINAL CTA eliminat
- suport: Standard maxim 24h, Pro maxim 8h
- signup: pret Standard aliniat la 49 lei

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/web/templates/signup.html

@@ -73,7 +73,7 @@
       <select name="plan"
               style="width:100%;height:44px;padding:0 10px;border:1px solid var(--line);border-radius:6px;background:var(--card2);color:var(--ink);font:400 14px var(--font-ui);outline:none;cursor:pointer;">
         <option value="free"{% if not plan or plan == 'free' %} selected{% endif %}>Gratuit — 0 lei/lună</option>
-        <option value="standard"{% if plan == 'standard' %} selected{% endif %}>Standard — 39 lei/lună</option>
+        <option value="standard"{% if plan == 'standard' %} selected{% endif %}>Standard — 49 lei/lună</option>
         <option value="pro"{% if plan == 'pro' %} selected{% endif %}>Pro — 59 lei/lună</option>
         <option value="premium"{% if plan == 'premium' %} selected{% endif %}>Premium — la cerere</option>
       </select>