body { background-color: #06070a; color: #ffffff; overflow-x: hidden; }
        
        /* Glassmorphism and glow effects */
        .glass-card {
            background: rgba(16, 23, 34, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: all 0.3s ease;
        }
        .glass-card:hover {
            border-color: rgba(78, 161, 255, 0.3);
            box-shadow: 0 0 20px rgba(78, 161, 255, 0.1);
            transform: translateY(-5px);
        }
        
        .glow-text { text-shadow: 0 0 20px rgba(0, 194, 255, 0.5); }
        .glow-border { box-shadow: 0 0 15px rgba(78, 161, 255, 0.3); }

        /* Hero background and overlay */
        .hero-bg {
            background-image: linear-gradient(rgba(6, 7, 10, 0.9), rgba(6, 7, 10, 0.6)), url(./image/hero_bg.avif);
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        /* Floating animations */
        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
            100% { transform: translateY(0px); }
        }
        .floating { animation: float 6s ease-in-out infinite; }
        .floating-delay-1 { animation: float 6s ease-in-out 2s infinite; }
        .floating-delay-2 { animation: float 6s ease-in-out 4s infinite; }

        /* iOS Chat Bubble Styles */
        .chat-container {
            display: flex;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            scrollbar-width: none; /* Firefox */
        }
        .chat-container::-webkit-scrollbar { display: none; } /* Chrome */
        
        .chat-bubble-received {
            background-color: #101722;
            color: #c9d1d9;
            border-radius: 18px 18px 18px 4px;
            padding: 12px 16px;
            max-width: 85%;
            font-size: 0.95rem;
            border: 1px solid rgba(255,255,255,0.05);
        }
        .chat-bubble-sent {
            background-color: #4ea1ff;
            color: #ffffff;
            border-radius: 18px 18px 4px 18px;
            padding: 12px 16px;
            max-width: 85%;
            font-size: 0.95rem;
            margin-left: auto;
        }
        .iphone-mockup {
            border: 4px solid #333;
            border-radius: 36px;
            background: #06070a;
            box-shadow: inset 0 0 20px rgba(0,0,0,0.5), 0 20px 40px rgba(0,0,0,0.5);
        }
		
		
		.float-wrap {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 9999;
  cursor: pointer;
}

/* 两层白色呼吸背景 */
.float-bg {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 40px;
  height: 40px;
  margin-left: -20px;
  margin-top: -20px;
  background: #fff;
  border-radius: 50%;
  animation: breathe 2.4s infinite ease-in-out;
}
.float-bg:nth-child(1) {
  animation-delay: -1.2s;
}

/* 图标：40px 圆形 */
.float-icon {
  position: relative;
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  pointer-events: none;
}

/* 呼吸消失动画 */
@keyframes breathe {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}