/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: #0a0a1a;
    color: #fff;
    line-height: 1.6;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 10%;
    background: rgba(0,0,0,0.7);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
}
header .logo {
    font-weight: bold;
    font-size: 1.5em;
    color: #00f0ff;
}
header nav ul {
    list-style: none;
    display: flex;
}
header nav ul li {
    margin-left: 20px;
}
header nav ul li a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
}
header nav ul li a:hover {
    color: #00f0ff;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}
.hero-content {
    z-index: 2;
    text-align: center;
    max-width: 800px;
}
.hero-content .tagline {
    color: #00f0ff;
    font-size: 1em;
    margin-bottom: 20px;
}
.hero-content h1 {
    font-size: 3em;
    margin-bottom: 20px;
}
.hero-content .highlight {
    color: #00f0ff;
}
.hero-content .description {
    font-size: 1.1em;
    margin-bottom: 30px;
}
.hero-buttons .btn {
    display: inline-block;
    margin: 0 10px;
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}
.btn.primary {
    background: #00f0ff;
    color: #0a0a1a;
}
.btn.primary:hover {
    background: #00d0e0;
}
.btn.secondary {
    border: 2px solid #00f0ff;
    color: #00f0ff;
}
.btn.secondary:hover {
    background: #00f0ff;
    color: #0a0a1a;
}

/* Canvas 背景 */
#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Features */
.features {
    padding: 80px 10%;
    text-align: center;
}
.features h2 {
    font-size: 2em;
    margin-bottom: 40px;
    color: #00f0ff;
}
.features .cards {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.features .card {
    background: rgba(0,0,0,0.6);
    flex: 1 1 45%;
    margin: 10px;
    padding: 20px;
    border-radius: 12px;
    transition: transform 0.3s, box-shadow 0.3s;
}
.features .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,255,255,0.5);
}
.features .card h3 {
    margin-bottom: 10px;
    color: #00f0ff;
}
.features .card p {
    font-size: 1em;
}

/* About */
.about {
    padding: 80px 10%;
    background: #07071a;
    text-align: center;
}
.about h2 {
    font-size: 2em;
    color: #00f0ff;
    margin-bottom: 20px;
}
.about p {
    max-width: 800px;
    margin: 0 auto 40px;
}
.about .stats {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}
.about .stat {
    font-size: 1.2em;
    margin: 10px;
}
.about .stat span {
    display: block;
    font-size: 2em;
    color: #00f0ff;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 10%;
    background: #000010;
    margin-top: 50px;
    color: #666;
}