/* Basic reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background: #f8f8f8;
    color: #333;
    line-height: 1.6;
}

/* Header */
.site-header {
    background: #005bbb;
    color: #fff;
    padding: 15px 0;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    text-decoration: none;
    color: #fff;
    font-size: 24px;
    font-weight: bold;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.main-nav a {
    color: blue;
    text-decoration: none;
    font-size: 16px;
}

.main-nav a:hover {
    text-decoration: underline;
}

/* Main */
.container {
    width: 90%;
    max-width: 960px;
    margin: 30px auto;
}

.breadcrumbs {
    list-style: none;
    margin-bottom: 15px;
    font-size: 14px;
    color: #444;
}

.breadcrumbs li {
    display: inline;
}

.breadcrumbs li+li:before {
    content: " / ";
}

.doc-title {
    font-size: 28px;
    margin-bottom: 10px;
    color: #222;
}

.doc-meta {
    font-size: 14px;
    margin-bottom: 15px;
    color: #555;
}

.download-btn .btn {
    display: inline-block;
    background: #0a7cff;
    color: #fff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 4px;
    margin-bottom: 20px;
}

.download-btn .btn:hover {
    background: #005fcc;
}

.preview-images img {
    max-width: 100%;
    height: auto;
    margin-right: 10px;
    border-radius: 4px;
}

.doc-content p {
    margin-bottom: 15px;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    background: #eee;
    font-size: 14px;
    color: #555;
}