body {
    font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
    background-color: #f8fafc;
}

.navbar {
    border-bottom: 1px solid #eaeaea;
}

.nav-link {
    font-size: 1.1rem;
    margin-right: 1rem;
    transition: color 0.2s;
}

.nav-link.active, .nav-link:hover {
    color: #ff5c5c !important;
    font-weight: bold;
}

section {
    border-radius: 12px;
    margin-bottom: 2rem;
}

.card-title {
    color: #ff5c5c;
    font-weight: 600;
}

.btn-lg {
    min-width: 140px;
}

.text-primary {
    color: #ff5c5c !important;
}

.btn-primary{
    background-color: #ff5c5c;
    border-color: #ff5c5c;
    color: #fff;
}

.btn-primary:hover{
    background-color: #e66363;
    border-color: #e66363;
}

footer {
    font-size: 0.95rem;
    color: #888;
    background: #fff;
    border-top: 1px solid #eaeaea;
}

.app-ui{
    text-align: center;
    margin-top: 30px;
}

.app-ui img {
    max-width: 100%;
    height: auto;
}