body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background: #fff;
    color: #111;
}

.content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
}

.section-title {
    color: #2554F2;
    font-weight: bold;
    text-align: center;
    margin-bottom: 20px;
    text-decoration: underline;
}

.text-content p,
.text-content ul {
    margin-bottom: 12px;
}

.text-content ul {
    padding-left: 20px;
}

.social-share {
    background: #e0e0e0;
    padding: 10px;
    border-radius: 8px;
}

.social-share p {
    margin-bottom: 8px;
    font-weight: bold;
}

.social-share button {
    margin-right: 10px;
    padding: 5px 10px;
    border: none;
    background: #3b5998;
    color: white;
    border-radius: 4px;
    cursor: pointer;
}

.related-posts {
    max-width: 1200px;
    margin: 40px auto;
    padding: 20px;
}

.post-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.post-card {
    width: 250px;
    border-radius: 10px;
    overflow: hidden;
    text-align: center;
    font-weight: bold;
    color: white;
    position: relative;
}

.post-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.post-card p {
    position: absolute;
    bottom: 10px;
    left: 0;
    width: 100%;
    text-shadow: 1px 1px 4px black;
}

/* RESET CƠ BẢN */
body {
    font-family: 'Segoe UI', 'Helvetica Neue', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.8;
    background-color: #fff;
    color: #111;
    font-size: 16px;
}

/* VÙNG NỘI DUNG CHÍNH */
.content {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

/* TIÊU ĐỀ LỚN */
.section-title {
    color: #004AAD;
    font-weight: 700;
    text-align: center;
    font-size: 28px;
    margin-bottom: 30px;
    text-transform: uppercase;
    border-bottom: 2px solid #004AAD;
    display: inline-block;
    padding-bottom: 5px;
    text-decoration: none;
}

/* ĐOẠN VĂN VÀ KHOẢNG CÁCH */
.text-content p {
    margin-bottom: 16px;
    font-size: 17px;
    color: #333;
}

/* IN ĐẬM CHO CÁC ĐẦU MỤC */
.text-content p strong {
    display: block;
    font-size: 18px;
    color: #111;
    margin-bottom: 4px;
}

/* GẠCH ĐẦU DÒNG */
.text-content ul {
    padding-left: 24px;
    margin-bottom: 20px;
}

.text-content ul li {
    margin-bottom: 12px;
    font-size: 17px;
    color: #333;
}

.text-content ul li strong {
    color: #000;
}

/* KẾT LUẬN */
.text-content .conclusion {
    font-weight: 600;
    font-size: 18px;
    color: #000;
    margin-top: 20px;
    line-height: 1.9;
}

.container {
    max-width: 960px;
    margin: 40px auto;
    padding: 0 20px;
}

h1,
h2 {
    color: #B71C1C;
    font-weight: bold;
}

h1 {
    text-align: center;
    text-transform: uppercase;
    font-size: 30px;
}

h2 {
    font-size: 24px;
    margin-top: 30px;
}

p {
    font-size: 17px;
    margin-bottom: 15px;
    line-height: 1.7;
}




.highlight {
    background: #f1f8e9;
    border-left: 5px solid #8bc34a;
    padding: 12px 16px;
    margin-top: 20px;
}

.note {
    background: #fff3e0;
    border-left: 5px solid #fb8c00;
    padding: 12px 16px;
    margin-top: 20px;
}

.related-posts {
    padding: 40px 0;
    background-color: #f9f9f9;
    text-align: center;
}

.section-title {
    font-size: 24px;
    margin-bottom: 30px;
    color: #003366;
}

.post-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.post-card {
    width: 180px;
    border: 1px solid #ddd;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s;
    background-color: #fff;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.post-card a {
    text-decoration: none;
    color: inherit;
    display: block;
}

.post-card img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.post-card p {
    margin: 10px;
    font-weight: 600;
}