Add full retention systems: daily hub, raids, prestige, seasons

- Graze slow-mo, perfect-wave FRENZY (x3 amber), ghost records,
  dynamic hunter titles
- Daily Hub: 7-day login calendar, animated lucky wheel, boss chest
  keys, pet eggs with rarity tiers + pity counter and real stat perks
- Seeded daily challenge (server-consistent modifiers, local top-5),
  hourly Golden Herd stampede, weekly Raid Colossus with damage tiers
- Rebirth prestige with Ancient Gem permanent perk shop
- Weapon mastery stars (+2%/level), bestiary milestone gems
- Weekly season points with Bronze..Diamond rank badges
- Shareable PNG result card on game over

style.css

@@ -448,6 +448,48 @@ h2 {
   .btn-menu.primary { font-size: 19px; }
 }
 
+/* ---------- daily hub ---------- */
+#screen-daily .panel {
+  width: min(560px, 92vw);
+  background: rgba(14,9,4,0.72);
+  border: 1px solid rgba(255,170,90,0.22);
+  border-radius: 14px;
+  padding: 16px 18px;
+  margin-bottom: 16px;
+}
+#screen-daily h3 { margin: 0 0 10px; color: #ffb938; letter-spacing: 1px; }
+.cal-strip { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
+.cal-day {
+  flex: 1; min-width: 56px; text-align: center;
+  padding: 8px 4px; border-radius: 10px;
+  background: rgba(255,255,255,0.05);
+  font-size: 11px; color: rgba(243,231,207,0.75);
+  border: 1px solid transparent;
+}
+.cal-day.past { opacity: 0.45; }
+.cal-day.today { border-color: #ffb938; background: rgba(255,185,56,0.14); color: #ffe9c9; }
+.cal-day b { display: block; font-size: 13px; margin-top: 2px; }
+#wheel-cv { display: block; margin: 0 auto 10px; }
+.wheel-result, .chest-info { text-align: center; min-height: 22px; color: #ffe9c9; margin-bottom: 8px; }
+.chest-info { font-size: 14px; }
+.raid-bar { height: 14px; border-radius: 7px; background: rgba(255,255,255,0.08);
+  overflow: hidden; margin-bottom: 8px; }
+#raid-bar-fill { height: 100%; width: 0%;
+  background: linear-gradient(90deg, #ff6b35, #ffd24a); transition: width .5s ease; }
+#raid-tiers { display: flex; gap: 8px; margin-bottom: 10px; }
+.raid-tier { flex: 1; text-align: center; padding: 7px 4px; border-radius: 9px;
+  background: rgba(255,255,255,0.05); font-size: 11px; color: rgba(243,231,207,0.8);
+  border: 1px solid transparent; cursor: pointer; }
+.raid-tier.claimable { border-color: #ffb938; color: #ffe9c9; }
+.raid-tier.claimed { opacity: 0.45; text-decoration: line-through; }
+.pr-perk { display:flex; align-items:center; gap:10px; padding:7px 10px; margin-bottom:6px;
+  border-radius:9px; background:rgba(255,255,255,0.05); font-size:13px; }
+.pr-perk b { color:#ffd24a; }
+.pr-perk button { margin-left:auto; }
+.rank-badge { color:#ffd24a; letter-spacing:0.5px; }
+
+#chest-art { text-align: center; font-size: 44px; margin-bottom: 8px; filter: drop-shadow(0 4px 10px rgba(0,0,0,0.6)); }
+
 /* live-drawn thumbnails in shop & bestiary */
 .item-prev {
   height: 62px;