* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #fff;
    color: #222;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 粒子背景 */
#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 10;
}

/* 头部样式 */
header {
    text-align: center;
    padding: 3rem 0;
    position: relative;
    overflow: hidden;
}

.logo {
    font-size: 5rem;
    margin-bottom: 1rem;
    color: #2196f3;
    text-shadow: 0 0 15px rgba(33, 150, 243, 0.2);
    animation: pulse 2s infinite;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #42a5f5, #7e57c2);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.subtitle {
    font-size: 1.5rem;
    color: #4f4f8f;
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

/* 内容区域 */
.content {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
    margin: 3rem 0;
}

.card {
    background: rgba(240, 245, 255, 0.95);
    border-radius: 15px;
    padding: 2rem;
    width: 100%;
    max-width: 350px;
    backdrop-filter: blur(2px);
    border: 1px solid #bbdefb;
    box-shadow: 0 6px 18px rgba(33, 150, 243, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(33, 150, 243, 0.15);
    border: 1px solid #42a5f5;
}

.card h2 {
    color: #1976d2;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card h2 i {
    color: #42a5f5;
}

.card p {
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* 角色展示 */
.characters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 1rem;
}

.character {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #42a5f5, #b3e5fc);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(33, 150, 243, 0.12);
    transition: transform 0.3s ease;
}

.character:hover {
    transform: scale(1.1);
}

.character::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.12);
    transform: rotate(45deg);
}

/* 页脚 */
footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    border-top: 1px solid #bbdefb;
}

.signature {
    font-size: 1.2rem;
    color: #1976d2;
    font-weight: bold;
    letter-spacing: 1px;
}

/* 动画效果 */
@keyframes pulse {
    0% {
        text-shadow: 0 0 15px rgba(33, 150, 243, 0.2);
    }
    50% {
        text-shadow: 0 0 25px rgba(33, 150, 243, 0.3), 0 0 35px rgba(126, 87, 194, 0.2);
    }
    100% {
        text-shadow: 0 0 15px rgba(33, 150, 243, 0.2);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .content {
        flex-direction: column;
        align-items: center;
    }
}