body {
    font-family: Arial, sans-serif;
    background: #f9f9f9;
    margin: 0;
    padding: 0;
}
header {
    background: #fff;
    border-bottom: 1px solid #ddd;
    padding: 10px 0;
}
nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.logo {
    font-size: 1.5em;
    color: #cc0000;
    text-decoration: none;
    font-weight: bold;
}
.search-form {
    flex: 1;
    display: flex;
    justify-content: center;
    margin: 0 20px;
}
.search-form input {
    width: 300px;
    padding: 7px;
    border: 1px solid #ccc;
    border-radius: 2px 0 0 2px;
    outline: none;
}
.search-form button {
    padding: 7px 15px;
    border: 1px solid #ccc;
    background: #eee;
    border-radius: 0 2px 2px 0;
    cursor: pointer;
}
.nav-right a {
    margin-left: 15px;
    text-decoration: none;
    color: #333;
}
main {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
}
.video-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}
.video-item {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 6px;
    width: 300px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    overflow: hidden;
    transition: box-shadow 0.2s;
}
.video-item:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.video-thumb {
    width: 100%;
    height: 170px;
    object-fit: cover;
    background: #000;
}
.video-info {
    padding: 10px;
}
.video-title {
    font-size: 1.1em;
    font-weight: bold;
    margin: 0 0 5px 0;
    color: #222;
    text-decoration: none;
}
.video-meta {
    font-size: 0.95em;
    color: #666;
}
footer {
    text-align: center;
    color: #888;
    padding: 20px 0 10px 0;
    font-size: 0.95em;
    background: #fff;
    border-top: 1px solid #eee;
    margin-top: 40px;
}
.comment-section {
    margin-top: 30px;
}
.comment {
    background: #f1f1f1;
    border-radius: 4px;
    padding: 10px;
    margin-bottom: 10px;
}
.comment-author {
    font-weight: bold;
    color: #cc181e;
}
.comment-date {
    font-size: 0.9em;
    color: #888;
    margin-left: 10px;
}