.promo-banner{background:linear-gradient(135deg,#2c3e50 0%,#ff6b35 100%);background-size:200% 200%;padding:16px 24px;border-radius:8px;margin:20px 0;box-shadow:0 4px 15px rgba(44,62,80,0.2);color:white;font-family:'Helvetica Neue',Arial,sans-serif;text-align:center;position:relative;overflow:hidden;animation:gradientShift 8s ease infinite}@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}.promo-banner::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,0.1) 0%,rgba(255,255,255,0) 70%);transform:rotate(30deg)}.promo-content{position:relative;z-index:2}.promo-main{font-size:18px;font-weight:700;line-height:1.4;letter-spacing:-0.5px}.promo-main strong{color:#ffd700;text-shadow:0 1px 2px rgba(0,0,0,0.2)}.promo-sub{font-size:14px;font-weight:500;opacity:0.9;margin-top:6px}@media (max-width:768px){.promo-banner{padding:14px 16px}.promo-main{font-size:16px}.promo-sub{font-size:13px}}@media (max-width:480px){.promo-main{font-size:15px}.promo-sub{font-size:12px}}