.article-section { padding: 80px 0; background: #fcfcfc; }
.article-shell { background: #fff; border-radius: 20px; padding: 50px; box-shadow: 0 15px 40px rgba(0,0,0,.05); }
.article-top { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; margin-bottom: 50px; }
.article-cover { width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,.1); }
.article-summary h2 { margin: 0 0 15px; font-size: 36px; font-weight: 800; line-height: 1.2; color: #111111; }
.article-summary .title-rule { display: flex; align-items: center; gap: 10px; margin: 0 0 20px; }
.article-summary .title-rule::after { content: ""; width: 60px; height: 3px; background: #f3b21a; border-radius: 50px; }
.article-meta { margin: 0 0 20px; color: #f3b21a; font-size: 14px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }
.article-summary p { margin: 0; font-size: 18px; line-height: 1.7; color: #555555; }

/* Table of Contents Styles */
.article-toc {
    background: #fcfcfc;
    border-radius: 12px;
    padding: 25px;
    margin: 40px 0;
    border: 1px solid #eee;
    max-width: 600px;
}
.toc-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
    color: #250900;
}
.toc-header i { font-size: 20px; color: #f3b21a; }
.toc-header strong { font-size: 18px; text-transform: uppercase; letter-spacing: 1px; }
.article-toc ul { list-style: none; padding: 0; margin: 0; }
.toc-item { margin-bottom: 10px; }
.toc-item a {
    text-decoration: none;
    color: #555;
    font-size: 15px;
    transition: all 0.3s;
    display: block;
    line-height: 1.4;
}
.toc-item a:hover { color: #f3b21a; padding-left: 5px; }
.toc-h2 { font-weight: 700; margin-top: 15px; }
.toc-h3 { padding-left: 20px; font-size: 14px; color: #777; }

.article-content { max-width: 900px; font-size: 17px; line-height: 1.8; color: #333333; }
.article-content h2, .article-content h3 { margin: 40px 0 20px; font-weight: 800; color: #111111; }
.article-content img { max-width: 100%; height: auto; border-radius: 12px; margin: 20px 0; }
.related-section { padding-top: 60px; margin-top: 60px; border-top: 1px solid #eeeeee; }
.related-title { display: flex; align-items: center; gap: 20px; margin-bottom: 40px; }
.related-title h2 { margin: 0; font-size: 32px; font-weight: 800; color: #f3b21a; text-transform: uppercase; }
.related-title span { flex-grow: 1; height: 1px; background: #f3b21a; position: relative; }
.related-title span::after { content: ""; width: 6px; height: 6px; background: #f3b21a; border-radius: 50%; position: absolute; right: 0; top: -3px; }

.news-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.news-card {
    padding: 0;
    overflow: hidden;
    border-radius: 12px;
    background: #ffffff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: #f3b21a;
}

.news-card img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    display: block;
}

.news-card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.news-card h3 {
    margin: 0 0 10px;
    color: #111111;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card p {
    margin: 0 0 15px;
    color: #666666;
    font-size: 13px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #999999;
    font-size: 11px;
}

.news-meta strong {
    color: #f3b21a;
    text-transform: uppercase;
}

@media (max-width: 991.98px) {
    .article-shell { padding: 30px; }
    .article-top { grid-template-columns: 1fr; gap: 30px; }
    .article-summary h2 { font-size: 28px; }
}

/* Share Section */
.article-share {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid #eee;
    display: flex;
    align-items: center;
    gap: 20px;
}
.share-label {
    font-weight: 700;
    color: #250900;
    text-transform: uppercase;
    font-size: 14px;
}
.share-links {
    display: flex;
    gap: 12px;
}
.share-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 18px;
}
.share-link.fb { background: #1877F2; }
.share-link.zalo { background: #0068FF; font-weight: 800; font-size: 12px; }
.share-link.yt { background: #FF0000; }
.share-link:hover { transform: translateY(-3px); opacity: 0.9; color: #fff; }

/* Comment Form Section */
.comment-section {
    margin-top: 60px;
}
.comment-card {
    background: #250900;
    border-radius: 20px;
    padding: 40px;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.comment-card h3 {
    font-size: 24px;
    font-weight: 800;
    color: #f3b21a;
    margin-bottom: 25px;
    text-transform: uppercase;
}
.comment-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}
.comment-form .full-width { grid-column: span 2; }
.comment-form input, .comment-form textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(243, 178, 26, 0.3);
    border-radius: 8px;
    padding: 12px 15px;
    color: #fff;
    outline: none;
}
.comment-form input:focus, .comment-form textarea:focus {
    border-color: #f3b21a;
}
.btn-submit-comment {
    grid-column: span 2;
    background: #f3b21a;
    color: #250900;
    border: none;
    border-radius: 50px;
    padding: 12px;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s;
}
.btn-submit-comment:hover { background: #fff; transform: translateY(-2px); }
.comment-success {
    display: none;
    background: rgba(40, 167, 69, 0.2);
    border: 1px solid #28a745;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
}