/* 悬浮按钮渐变色彩效果 */
.float-right .float-btn:nth-child(7n+1) { background: linear-gradient(135deg, rgba(102,126,234,0.3), rgba(118,75,162,0.3)) !important; }
.float-right .float-btn:nth-child(7n+2) { background: linear-gradient(135deg, rgba(255,107,107,0.3), rgba(255,165,2,0.3)) !important; }
.float-right .float-btn:nth-child(7n+3) { background: linear-gradient(135deg, rgba(46,213,115,0.3), rgba(56,249,215,0.3)) !important; }
.float-right .float-btn:nth-child(7n+4) { background: linear-gradient(135deg, rgba(165,94,234,0.3), rgba(240,147,251,0.3)) !important; }
.float-right .float-btn:nth-child(7n+5) { background: linear-gradient(135deg, rgba(30,144,255,0.3), rgba(0,242,254,0.3)) !important; }
.float-right .float-btn:nth-child(7n+6) { background: linear-gradient(135deg, rgba(238,9,121,0.3), rgba(255,106,0,0.3)) !important; }
.float-right .float-btn:nth-child(7n+7) { background: linear-gradient(135deg, rgba(17,153,142,0.3), rgba(56,239,125,0.3)) !important; }
.float-right .float-btn {
    transition: all 0.35s cubic-bezier(0.4,0,0.2,1) !important;
    backdrop-filter: saturate(2) blur(10px);
    -webkit-backdrop-filter: saturate(2) blur(10px);
}
.float-right .float-btn:hover {
    transform: scale(1.12) !important;
    box-shadow: 0 6px 20px rgba(0,0,0,0.15) !important;
    color: #fff !important;
}
.float-right .float-btn:nth-child(7n+1):hover { background: linear-gradient(135deg, #667eea, #764ba2) !important; }
.float-right .float-btn:nth-child(7n+2):hover { background: linear-gradient(135deg, #ff6b6b, #ffa502) !important; }
.float-right .float-btn:nth-child(7n+3):hover { background: linear-gradient(135deg, #2ed573, #38f9d7) !important; }
.float-right .float-btn:nth-child(7n+4):hover { background: linear-gradient(135deg, #a55eea, #f093fb) !important; }
.float-right .float-btn:nth-child(7n+5):hover { background: linear-gradient(135deg, #1e90ff, #00f2fe) !important; }
.float-right .float-btn:nth-child(7n+6):hover { background: linear-gradient(135deg, #ee0979, #ff6a00) !important; }
.float-right .float-btn:nth-child(7n+7):hover { background: linear-gradient(135deg, #11998e, #38ef7d) !important; }