@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

body {
    font-family: 'Inter', sans-serif;
    background: #0a0a0a;
}

/* 高级渐变和动画效果 */
.hero-bg {
    background: radial-gradient(ellipse at top, #1e3a8a 0%, #0f172a 50%, #000000 100%);
    position: relative;
    overflow: hidden;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.4) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(147, 197, 253, 0.3) 0%, transparent 40%),
        radial-gradient(circle at 40% 70%, rgba(96, 165, 250, 0.2) 0%, transparent 40%);
    animation: gradientShift 8s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { opacity: 1; transform: scale(1) rotate(0deg); }
    50% { opacity: 0.8; transform: scale(1.1) rotate(2deg); }
}

/* 3D浮动粒子效果 */
.particle {
    position: absolute;
    background: linear-gradient(45deg, #3b82f6, #60a5fa);
    border-radius: 50%;
    animation: float3d 6s ease-in-out infinite;
    opacity: 0.6;
}

.particle:nth-child(1) { width: 4px; height: 4px; top: 20%; left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { width: 6px; height: 6px; top: 60%; left: 20%; animation-delay: 1s; }
.particle:nth-child(3) { width: 3px; height: 3px; top: 40%; left: 70%; animation-delay: 2s; }
.particle:nth-child(4) { width: 5px; height: 5px; top: 80%; left: 80%; animation-delay: 3s; }

@keyframes float3d {
    0%, 100% { transform: translateY(0px) translateX(0px) scale(1); }
    25% { transform: translateY(-20px) translateX(10px) scale(1.1); }
    50% { transform: translateY(-10px) translateX(-15px) scale(0.9); }
    75% { transform: translateY(-30px) translateX(5px) scale(1.05); }
}

/* 玻璃态效果 */
.glass-morphism {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.glass-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(25px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.glass-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow:
        0 30px 60px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(59, 130, 246, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

/* 渐变按钮 */
.premium-btn {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 25%, #60a5fa 50%, #3b82f6 75%, #1e40af 100%);
    background-size: 200% 200%;
    animation: gradientMove 3s ease infinite;
    box-shadow:
        0 10px 30px rgba(59, 130, 246, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.premium-btn:hover {
    transform: translateY(-3px);
    box-shadow:
        0 15px 40px rgba(59, 130, 246, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 导航栏 */
.nav-glass {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* 文字特效 */
.text-glow {
    text-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

.text-gradient {
    background: linear-gradient(135deg, #ffffff 0%, #60a5fa 50%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 动态边框 */
.animated-border {
    position: relative;
    overflow: hidden;
}
.animated-border::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.4), transparent);
    animation: borderSlide 2s infinite;
}
@keyframes borderSlide {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 滚动动画 */
.reveal-up {
    opacity: 0;
    transform: translateY(60px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 悬浮 */
.hover-lift {
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.hover-lift:hover {
    transform: translateY(-8px) scale(1.02);
    filter: brightness(1.1);
}

/* 报名表单样式 */
.registration-form {
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 滚动资讯 */
.news-scroll {
    animation: scroll 20s linear infinite;
}
@keyframes scroll {
    0% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
}

/* 产品展示 */
.product-showcase {
    perspective: 1000px;
}
.product-card {
    transform-style: preserve-3d;
    transition: transform 0.6s;
}
.product-card:hover {
    transform: rotateY(10deg) rotateX(5deg);
}

/* 价格标签 */
.price-tag {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

/* 状态指示器 */
.status-indicator {
    position: relative;
}
.status-indicator::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 12px;
    height: 12px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

input, textarea {
    display: block;
    margin: 8px 0;
    width: 100%;
    max-width: 400px;
    padding: 8px;
}

button {
    background-color: orange;
    padding: 10px 20px;
    border: none;
    color: white;
    font-weight: bold;
}