:root {
    --primary-red: #C91F17;
    --secondary-red: #E53935;
    --button-gradient: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
    --card-bg-dark-red: #D32F2F;
    --section-bg-deep-red: #B71C1C;
    --text-main-creamy-white: #FFF5E1;
    --border-gold: #F2B544;
    --glow-yellow: #FFCC66;
    --gold-color: #F4D34D;
    --deep-red-dark: #7A0E0E;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333333; /* Default text color for light backgrounds */
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

/* Hero Section */
.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__hero-section {
    position: relative;
    padding-top: 10px; /* Small top padding, body handles header offset */
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: var(--section-bg-deep-red);
    overflow: hidden;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__hero-image-wrapper {
    width: 100%;
    max-height: 600px;
    overflow: hidden;
    margin-bottom: 20px;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__hero-content {
    text-align: center;
    padding: 20px;
    color: var(--text-main-creamy-white);
    max-width: 800px;
    margin-bottom: 40px;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--text-main-creamy-white);
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__intro-text {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__cta-button {
    display: inline-block;
    background: var(--button-gradient);
    color: var(--deep-red-dark);
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: none;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Table of Contents Section */
.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__toc-section {
    padding: 40px 0;
    background-color: #f8f8f8;
    margin-bottom: 40px;
    border-bottom: 1px solid #eee;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__toc-list {
    list-style: none;
    padding: 0;
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 15px;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__toc-list li {
    background-color: #fff;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.2s ease;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__toc-list li:hover {
    transform: translateY(-5px);
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__toc-list li a {
    text-decoration: none;
    color: var(--primary-red);
    font-weight: 600;
    display: block;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__toc-list li ul {
    list-style: disc;
    padding-left: 20px;
    margin-top: 8px;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__toc-list li ul li {
    background: none;
    box-shadow: none;
    padding: 5px 0;
    margin-bottom: 0;
    transform: none;
    font-size: 0.95rem;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__toc-list li ul li a {
    color: #555;
    font-weight: 400;
}

/* Content Sections */
.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__content-section {
    padding: 60px 0;
    margin-bottom: 40px;
    background-color: #ffffff; /* Default light background */
    color: #333333;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__dark-bg {
    background-color: var(--section-bg-deep-red);
    color: var(--text-main-creamy-white);
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    color: var(--primary-red);
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__section-title--light {
    color: var(--text-main-creamy-white);
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__sub-title {
    font-size: 1.8rem;
    font-weight: 600;
    margin-top: 30px;
    margin-bottom: 20px;
    color: var(--primary-red);
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__sub-title--light {
    color: var(--gold-color);
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__text-block {
    font-size: 1.1rem;
    margin-bottom: 20px;
    text-align: justify;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__content-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 30px auto;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__list {
    list-style: disc;
    padding-left: 25px;
    margin-bottom: 20px;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__list li {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__list--light li {
    color: var(--text-main-creamy-white);
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__list--light li strong {
    color: var(--gold-color);
}

/* FAQ Section */
.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__faq-section {
    padding: 60px 0;
    background-color: #f0f2f5;
    margin-bottom: 40px;
}

.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__faq-list {
    margin-top: 30px;
}

details.page-blog-huong-dan-choi-ban-ca-vang-hieu-qua__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}