body {
    color: white;
    margin: 0;
    text-align: center;
    background-color: black;
}
canvas {
    display: block;
    width: 100%;
    height: 100%;
}
p {
    color: rgba(255, 255, 255, 0.5);
}
.header {
    top: 42%;
}
.header-content {
    padding: 50px;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
}
.footer {
    bottom: 3%;
}
.description {
    color: gray;
    padding-top: 50px;
}
a,
a:hover,
a:visited {
    color: white;
    text-decoration: none;
}
.disable-selection {
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* Internet Explorer */
    -khtml-user-select: none; /* KHTML browsers (e.g. Konqueror) */
    -webkit-user-select: none; /* Chrome, Safari, and Opera */
    -webkit-touch-callout: none; /* Disable Android and iOS callouts*/
}
h1::after {
    /* content: ' 0760.cn'; */
    font-size: 12px;
    position: absolute;
    top: 3px;
    padding-left: 5px;
    font-weight: 400;
}
h2::after {
    content: "2";
    font-size: 12px;
    position: absolute;
    top: 14px;
    padding-left: 5px;
}

.btn {
    border-radius: 100px;
    padding: 10px 25px;
}

/* 严格上下居中 */
.full-center {
    height: 100vh !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}
/* 漂亮：增加一点发光感和字母间距 */
.badge-feature {
    letter-spacing: 2px;
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 2rem;
    display: inline-block;
    color: #00d4ff;
    border: 1px solid rgba(0, 212, 255, 0.2);
    text-transform: uppercase;
}
/* 专业：优化标题字间距，增加一点线性渐变 */
h1.display-3 {
    font-weight: 800;
    letter-spacing: -2px;
    background: linear-gradient(to bottom, #ffffff, #cccccc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
/* 简洁：优化行高和色彩透明度 */
.hero-desc {
    font-size: 1.25rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
    max-width: 700px;
    margin: 0 auto;
}
.hero-desc strong {
    color: #fff;
    font-weight: 600;
}

.btn-cta {
    font-weight: 600;
    border-radius: 8px;
    padding: 12px 32px;
    margin: 8px;
    transition: all 0.3s ease;
}
.btn-primary {
    background-color: #00d4ff;
    border-color: #00d4ff;
    color: #000;
}
.btn-primary:hover {
    background-color: #00b8e6;
    transform: translateY(-2px);
}