html{
    overflow-y: auto;
    scrollbar-gutter: stable;
}

body {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: #f4f6f9;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: #f7f7f7;
}

.main-container {
    flex: 1;
}

.footer {
    background: #f1f1f1;
    padding: 30px 0;
    text-align: center;
}

.card {
    border-radius: 0.5rem;
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.container {
    max-width: 1000px;
}

.container p {
    margin-bottom: 1rem;
    font-size: 14px;
}

.tool-card {
    height:100%;
    transition: all .2s;
    cursor: pointer;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.tool-card .card-body{
    display:flex;
    flex-direction:column;
    justify-content:center;
    }

.hero {
    padding-top: 30px;
    text-align: center;
}

.hero h1 {
    font-size: 40px;
    font-weight: 700;
}

textarea[readonly] {
    background-color: #f8f9fa;
}

.nav-tabs .nav-link.active {
    font-weight: 600;
}

.btn {
    min-width: 100px;
    margin-right: 5px;
}

.container h3 {
    margin-bottom: 20px;
}

.btn-back {
    margin-bottom: 1rem;
}

.navbar-nav .nav-link.active {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 8px;
    text-decoration-color: #0d6efd;
}