body { padding-top: 56px; }
.left-aligned { margin-left: auto; }
.bg-dark { background-color: #343a40 !important; }
.bg-hero { background-color: #45b06cff; }

/* CALLOUT */
.bd-callout { padding:1.25rem; margin-top:1.25rem; margin-bottom:1.25rem; border:1px solid #e9ecef; border-left-width:.25rem; border-radius:.25rem }
.bd-callout h4 { margin-bottom:.25rem }
.bd-callout p:last-child { margin-bottom:0 }
.bd-callout code { border-radius:.25rem }
.bd-callout+.bd-callout { margin-top:-.25rem }
.bd-callout-info { border-left-color:#5bc0de }
.bd-callout-warning { border-left-color:#f0ad4e }
.bd-callout-danger { border-left-color:#d9534f }
h1 {
        display: inline-block;
        font-size: 36px;
        background-image: linear-gradient(to right, #ff8a00, #ff4d4d);
        -webkit-background-clip: text;
        color: transparent;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
        margin-bottom: 20px;
        padding: 10px 20px;
        border-radius: 5px;
    }

img {
    display: block; /* 确保图片作为块级元素处理，避免基线对齐问题 */
    border: 2px solid #ccc; 
    border-radius: 5px; 
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); /* 添加轻微阴影 */
    transition: transform 0.3s ease; /* 添加过渡效果，以便平滑改变缩放 */
}

img:hover {
    transform: scale(1.05); /* 图片放大105% */
    cursor: zoom-in;
}

/* footer */
footer a { color: white; font-weight: bold; text-decoration: none; }
footer a:hover { color: white; text-decoration: underline; }