:root {
    --space-bg: #0f0f1a;
    --neon-primary: #00f7ff;
    --neon-secondary: #ff00f7;
    --panel-bg: rgba(15, 15, 26, 0.7);
    --text-primary: #e0e0ff;
    --text-secondary: #a0a0c0;
    --glow: 0 0 10px;
}

/* 太空动画背景 */
@keyframes starfield {
    from { background-position: 0 0 }
    to { background-position: 1000px 1000px }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Orbitron', 'Segoe UI', sans-serif;
}

body {
    background-color: var(--space-bg);
    color: var(--text-primary);
    background-image: 
        radial-gradient(1px 1px at 50px 100px, #fff, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 150px 250px, #fff, rgba(0,0,0,0)),
        radial-gradient(1px 1px at 300px 400px, #fff, rgba(0,0,0,0));
    background-size: 1000px 1000px;
    animation: starfield 200s linear infinite;
    perspective: 1000px;
}

/* 霓虹边框效果 */
.neon-border {
    position: relative;
}

.neon-border::before {
    content: '';
    position: absolute;
    inset: -3px;
    border: 2px solid var(--neon-primary);
    border-radius: 12px;
    box-shadow: 
        inset 0 0 10px var(--neon-primary),
        0 0 20px var(--neon-primary);
    z-index: -1;
    opacity: 0.7;
}

/* 全息投影式导航 */
header {
    backdrop-filter: blur(10px);
    background: var(--panel-bg);
    border-bottom: 1px solid rgba(0, 247, 255, 0.2);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 40px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(0, 247, 255, 0.5);
}

.nav-links {
    display: flex;
    justify-content: flex-end;
    gap: 5px;
}

.nav-links a {
    padding: 10px 15px;
    border-radius: 20px;
    background: rgba(0, 247, 255, 0.1);
    border: 1px solid rgba(0, 247, 255, 0.3);
    transition: all 0.3s;
    font-size: 14px;
}

.nav-links a:hover {
    background: rgba(0, 247, 255, 0.3);
    box-shadow: 0 0 15px var(--neon-primary);
}

/* 非对称内容网格 */
.main-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 30px;
    margin: 40px 0;
}

.content-panel {
    background: var(--panel-bg);
    border-radius: 15px;
    padding: 30px;
    backdrop-filter: blur(5px);
    transform-style: preserve-3d;
}

/* 3D悬浮卡片 */
.article-card {
    background: linear-gradient(145deg, rgba(15,15,26,0.8), rgba(30,30,50,0.8));
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
    transition: transform 0.5s, box-shadow 0.5s;
    border: 1px solid rgba(0, 247, 255, 0.1);
    transform: translateZ(0);
}

.article-card:hover {
    transform: translateZ(20px) rotateX(5deg);
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.5),
        0 0 30px var(--neon-primary);
}

/* 数据面板样式 */
.data-panel {
    background: rgba(15,15,26,0.6);
    border-left: 3px solid var(--neon-primary);
    padding: 20px;
    margin: 30px 0;
}

/* 动态标签 */
.dynamic-tag {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(0, 247, 255, 0.1);
    border-radius: 15px;
    font-size: 12px;
    margin-right: 8px;
    margin-bottom: 8px;
    animation: colorShift 5s infinite alternate;
}

@keyframes colorShift {
    0% { border: 1px solid var(--neon-primary); }
    50% { border: 1px solid var(--neon-secondary); }
    100% { border: 1px solid var(--neon-primary); }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
    
    .header-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .nav-links {
        justify-content: center;
    }
}