/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

:root {
    --primary: #00b4ff;
    --secondary: #00a0e9;
    --accent: #00e0e0;
    --dark: #1a243f;
    --light: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary), var(--accent));
}

/* 全局样式 */
body {
    background-color: var(--dark);
    background-image: linear-gradient(to bottom, #1a243f, #0f172a);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 导航栏样式 */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 15px 0;
    background: rgba(26, 36, 63, 0.98);
    backdrop-filter: blur(12px);
    z-index: 1100;
    box-shadow: 0 2px 30px rgba(0, 180, 255, 0.15);
    border-bottom: 1px solid rgba(0, 180, 255, 0.1);
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #b066ff, #d946ef);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.nav-links a:hover {
    color: #b066ff;
}

.nav-links a:hover::after {
    transform: scaleX(1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-badge {
    padding: 4px 8px;
    background: rgba(0,168,255,0.1);
    border: 1px solid rgba(0,168,255,0.2);
    border-radius: 4px;
    font-size: 12px;
    color: var(--primary);
}