/* ==========================================================================
   1. VARIABLES & RESET
   ========================================================================== */
:root {
    --cf-navy: #0B1736;
    --cf-blue: #2563EB;
    --cf-blue-hover: #1D4ED8;
    --cf-teal: #14B8A6;
    --cf-light: #F7F9FC;
    --cf-white: #FFFFFF;
    --cf-text-main: #0B1736;
    --cf-text-muted: #64748B;
    --cf-border: #E5EAF2;
    --cf-radius: 14px;
    --cf-radius-sm: 8px;
    --cf-shadow: 0 4px 20px rgba(11, 23, 54, 0.04);
    --cf-shadow-hover: 0 10px 30px rgba(11, 23, 54, 0.08);
    
    --font-heading: 'Be Vietnam Pro', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --container-width: 1440px;
    --transition: all 0.3s ease;
}
html {
    scroll-behavior: smooth; /* Thêm dòng này để cuộn mượt */
}
/* Khóa chống tràn khung ngang (Horizontal Overflow Reset) */
html, body {
    overflow-x: hidden !important;
    width: 100%;
    max-width: 100vw;
    position: relative;
}

*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--cf-text-main);
    background-color: var(--cf-white);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--cf-navy);
    line-height: 1.3;
    font-weight: 700;
}

a { color: var(--cf-blue); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--cf-blue-hover); }

img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ==========================================================================
   2. UTILITIES & LAYOUT
   ========================================================================== */
.cf-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.cf-section { margin-bottom: 60px; }
.section-title { font-size: 28px; margin-bottom: 32px; padding-top: 32px; }
.bg-light { background-color: #f8fafc; }

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 10px 24px; font-weight: 600; border-radius: var(--cf-radius-sm);
    cursor: pointer; transition: var(--transition);
    font-family: var(--font-heading);
}
.btn-primary { background: var(--cf-blue); color: var(--cf-white); border: none; }
.btn-primary:hover { background: var(--cf-blue-hover); color: var(--cf-white); }
.btn-outline-primary { border: 2px solid var(--cf-blue); color: var(--cf-blue); background: transparent; }
.btn-outline-primary:hover { background: var(--cf-blue); color: var(--cf-white); }

.cat-label {
    display: inline-block; font-size: 12px; font-weight: 700;
    text-transform: uppercase; color: var(--cf-blue); margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.post-meta {
    font-size: 13px; color: var(--cf-text-muted);
    display: flex; align-items: center; gap: 6px; margin-top: 12px;
}

/* ==========================================================================
   3. HEADER
   ========================================================================== */
.site-header {
    border-bottom: 1px solid var(--cf-border);
    background: var(--cf-white);
    position: sticky; top: 0; z-index: 100;
}

.header-inner {
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    height: 80px;
    gap: 24px;
}

.site-branding { flex-shrink: 0; }
.site-title { font-size: 24px; font-weight: 800; color: var(--cf-navy); }

.main-navigation {
    flex: 1;
    display: flex;
    justify-content: center;
}

.main-navigation ul { 
    display: flex; 
    gap: 26px; 
    font-weight: 500; 
}

.main-navigation a { 
    color: var(--cf-text-main); 
    white-space: nowrap; 
    font-size: 16px; 
    transition: var(--transition);
}

.main-navigation a:hover { color: var(--cf-blue); }

.header-actions { 
    display: flex; 
    align-items: center; 
    gap: 16px; 
    flex-shrink: 0; 
}

.search-toggle-btn { background: none; border: none; cursor: pointer; color: var(--cf-navy); }
.menu-toggle { display: none; }

.search-dropdown-box {
    position: absolute;
    top: 150%;
    right: 0;
    width: 320px;
    background: var(--cf-white);
    border: 1px solid var(--cf-border);
    border-radius: var(--cf-radius);
    padding: 16px;
    box-shadow: var(--cf-shadow-hover);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 999;
}

.search-dropdown-box.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.search-dropdown-box .search-form { display: flex; gap: 8px; }
.search-dropdown-box input {
    flex: 1; padding: 12px 16px;
    border: 1px solid var(--cf-border);
    border-radius: var(--cf-radius-sm);
    outline: none; font-family: var(--font-body); font-size: 14px;
}
.search-dropdown-box input:focus { border-color: var(--cf-blue); }
.search-dropdown-box .btn-primary { padding: 10px 20px; border-radius: var(--cf-radius-sm); }

/* ==========================================================================
   4. HERO SECTION
   ========================================================================== */
.cf-hero { padding: 60px 0; overflow: hidden; }
.hero-inner { display: flex; align-items: center; gap: 40px; }
.hero-content { flex: 1; }
.hero-title { font-size: 48px; margin-bottom: 16px; }
.hero-desc { font-size: 18px; color: var(--cf-text-muted); margin-bottom: 32px; max-width: 90%; }
.hero-image { flex: 1; text-align: right; }

.hero-search-box form {
    display: flex;
    align-items: center;
    background: var(--cf-white);
    border: 1px solid var(--cf-border);
    border-radius: 50px;
    padding: 6px;
    max-width: 500px;
    box-shadow: 0 4px 20px rgba(11,23,54,0.05);
    transition: var(--transition);
}

.hero-search-box form:focus-within {
    border-color: var(--cf-blue);
    box-shadow: 0 4px 20px rgba(37,99,235,0.15);
}

.search-input-wrap {
    display: flex;
    align-items: center;
    flex: 1;
    padding-left: 20px;
}

.search-input-wrap .search-icon {
    color: var(--cf-text-muted);
    margin-right: 12px;
    flex-shrink: 0;
}

.search-input-wrap input[type="search"] {
    border: none; outline: none; width: 100%;
    font-size: 16px; color: var(--cf-text-main);
    background: transparent; font-family: var(--font-body);
	padding-left: 20px;
}

.hero-search-box .btn-primary {
    border-radius: 40px;
    padding: 14px 32px;
    white-space: nowrap;
    font-size: 16px;
}

/* ==========================================================================
   5. FEATURED GRID (Nổi bật hôm nay)
   ========================================================================== */
.featured-grid {
    display: flex;
    align-items: stretch;
    gap: 32px;
}

.featured-large-col { flex: 1.2; display: flex; }
.featured-small-col { flex: 1; display: flex; flex-direction: column; gap: 24px; }

.card-featured-large, .card-featured-small, .card-grid-item {
    background: var(--cf-white);
    border-radius: var(--cf-radius);
    overflow: hidden;
    border: 1px solid var(--cf-border);
    transition: var(--transition);
}

.card-featured-large:hover, .card-featured-small:hover, .card-grid-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--cf-shadow-hover);
}

.post-title a { color: var(--cf-navy); transition: var(--transition); }
.post-title a:hover { color: var(--cf-blue); }

.card-featured-large { display: flex; flex-direction: column; width: 100%; }
.card-featured-large .post-thumb { display: block; overflow: hidden; }
.card-featured-large .post-thumb img {
    width: 100%; aspect-ratio: 16/9; object-fit: cover;
    transition: transform 0.5s ease;
}
.card-featured-large:hover .post-thumb img { transform: scale(1.05); }

.card-featured-large .post-info {
    padding: 24px; flex: 1; display: flex; flex-direction: column; justify-content: center;
}
.card-featured-large .post-title { font-size: 26px; margin-bottom: 12px; line-height: 1.3; }
.card-featured-large .post-excerpt { color: var(--cf-text-muted); margin-bottom: 16px; font-size: 15px; }

.card-featured-small {
    display: flex; flex-direction: row; align-items: stretch; flex: 1;
    background: var(--cf-white); border-radius: var(--cf-radius);
    overflow: hidden; border: 1px solid var(--cf-border);
}

.card-featured-small .post-thumb {
    width: 38%; max-width: 220px; flex-shrink: 0; margin: 0;
}

.card-featured-small .post-thumb img {
    width: 100%; height: 100%; object-fit: cover; display: block;
    transition: transform 0.5s ease;
}
.card-featured-small:hover .post-thumb img { transform: scale(1.05); }

.card-featured-small .post-info {
    padding: 20px; flex: 1; display: flex; flex-direction: column; justify-content: center;
}
.card-featured-small .post-title { font-size: 17px; margin-bottom: 8px; line-height: 1.4; }

/* ==========================================================================
   6. TOPICS GRID (Chủ đề)
   ========================================================================== */
.topics-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.topic-card {
    text-align: center; padding: 32px 16px;
    border: 1px solid var(--cf-border); border-radius: var(--cf-radius);
    background: var(--cf-white);
}
.topic-icon { width: 100px; height: 100px; margin: 0 auto 16px; background: var(--cf-light); border-radius: 16px; display: flex; align-items: center; justify-content: center; }
.topic-icon img { width: 95px; }
.topic-card h3 { font-size: 16px; margin-bottom: 8px; }
.topic-card p { font-size: 13px; color: var(--cf-text-muted); margin: 0; }

/* ==========================================================================
   7. LATEST & SIDEBAR (Bài mới & Đọc nhiều)
   ========================================================================== */
.cf-latest-with-sidebar .flex-layout { display: flex; gap: 32px; align-items: flex-start; }
.main-content-col { flex: 1; min-width: 0; }
.sidebar-col { width: 340px; flex-shrink: 0; position: sticky; top: 100px; }

.post-grid-2, .post-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.card-grid-item {
    background: var(--cf-white); border-radius: var(--cf-radius);
    overflow: hidden; border: 1px solid var(--cf-border);
    transition: var(--transition); display: flex; flex-direction: column; height: 100%;
}
.card-grid-item:hover { transform: translateY(-4px); box-shadow: var(--cf-shadow-hover); }

.card-grid-item .post-thumb { display: block; overflow: hidden; }
.card-grid-item .post-thumb img {
    width: 100%; aspect-ratio: 16/7; object-fit: cover; transition: transform 0.5s ease;
}
.card-grid-item:hover .post-thumb img { transform: scale(1.05); }

.card-grid-item .post-info { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.card-grid-item .post-title { font-size: 16px; margin-bottom: 8px; line-height: 1.4; }
.card-grid-item .post-excerpt { font-size: 14px; color: var(--cf-text-muted); margin-bottom: 16px; flex: 1; line-height: 1.5; }
.card-grid-item .post-meta { margin-top: auto; }

.widget-popular {
    background: var(--cf-white); border-radius: var(--cf-radius);
    padding: 32px 24px; border: 1px solid var(--cf-border);
}
.widget-popular .widget-title { font-size: 20px; margin-bottom: 24px; }
.popular-post-list { counter-reset: popular-counter; padding: 0; margin: 0; }
.popular-post-list li { display: flex; gap: 16px; margin-bottom: 24px; align-items: flex-start; }
.popular-post-list li:last-child { margin-bottom: 0; }

.popular-post-list li::before {
    counter-increment: popular-counter; content: counter(popular-counter);
    width: 28px; height: 28px; background: var(--cf-blue); color: var(--cf-white);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 700; flex-shrink: 0; line-height: 1;
}

.popular-info { flex: 1; }
.popular-info a { font-weight: 600; color: var(--cf-navy); display: block; margin-bottom: 6px; line-height: 1.4; font-size: 15px;}
.popular-info a:hover { color: var(--cf-blue); }
.popular-info .post-meta-time { font-size: 13px; color: var(--cf-text-muted); }

/* ==========================================================================
   8. ADVERTISEMENT AREA & NEWSLETTER
   ========================================================================== */
.cf-ad-wrap { margin: 40px auto 60px; text-align: center; }
.cf-ad-wrap .ad-label { display: block; font-size: 10px; color: #999; letter-spacing: 1px; margin-bottom: 8px; text-align: right; }
.cf-ad-wrap .custom-html-widget {
    background: var(--cf-light); border: 1px dashed #ccc;
    padding: 20px; min-height: 120px; display: flex; align-items: center; justify-content: center;
}

.cf-newsletter .newsletter-box {
    background: var(--cf-light); border-radius: var(--cf-radius);
    padding: 48px; display: flex; align-items: center; justify-content: space-between;
    border: 1px solid var(--cf-border);
}
.nl-info { display: flex; align-items: center; gap: 24px; max-width: 50%; }
.nl-icon { width: 80px; height: 80px; background: var(--cf-white); border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: var(--cf-shadow);}
.nl-text h3 { font-size: 24px; margin-bottom: 8px; }
.nl-text p { color: var(--cf-text-muted); margin: 0; }
.nl-form { flex: 1; max-width: 450px; }
.nl-form form { display: flex; gap: 12px; }
.nl-form input[type="email"] {
    flex: 1; padding: 14px 20px; border: 1px solid var(--cf-border);
    border-radius: var(--cf-radius-sm); outline: none; font-size: 15px;
}
.nl-form input[type="submit"], .nl-form button {
    background: var(--cf-blue); color: var(--cf-white);
    border: none; padding: 14px 28px; border-radius: var(--cf-radius-sm);
    font-weight: 600; cursor: pointer;
}

/* ==========================================================================
   9. FOOTER
   ========================================================================== */
.site-footer { background: var(--cf-navy); color: var(--cf-white); padding-top: 60px; }
.footer-top { display: flex; gap: 60px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand { width: 320px; }
.footer-title { color: var(--cf-white); font-size: 24px; margin-bottom: 16px; }
.brand-desc { color: #94A3B8; font-size: 14px; margin-bottom: 24px; }
.social-links { display: flex; gap: 16px; }
.social-links a {
    width: 36px; height: 36px; background: rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%; color: var(--cf-white);
}
.social-links a:hover { background: var(--cf-blue); }

.footer-menus { flex: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.footer-col h3 { color: var(--cf-white); font-size: 16px; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { color: #94A3B8; font-size: 14px; }
.footer-col ul a:hover { color: var(--cf-white); }

.footer-bottom { padding: 24px 0; text-align: left; font-size: 14px; color: #94A3B8; }

.footer-brand .footer-logo {
    max-height: 40px; width: auto; margin-bottom: 16px;
    filter: brightness(0) invert(1); opacity: 0.95; transition: var(--transition);
}
.footer-brand .footer-logo:hover { opacity: 1; }

/* ==========================================================================
   10. CHI TIẾT LỘ TRÌNH HỌC (SINGLE LEARNING PATH)
   ========================================================================== */
.cf-breadcrumb { 
    font-size: 14px; color: #64748b; margin-bottom: 20px; padding-top: 20px;
}
.cf-breadcrumb a { 
    color: var(--cf-navy); font-weight: 500; text-decoration: none; transition: color 0.2s ease;
}
.cf-breadcrumb a:hover { color: var(--cf-blue); }
.cf-breadcrumb span, .cf-breadcrumb a.current-item { color: #94a3b8; font-weight: 400; }
.cf-breadcrumb a.current-item:hover { color: var(--cf-blue); }

.lotrinh-header {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
    background: var(--cf-white); padding: 40px; border-radius: var(--cf-radius); border: 1px solid var(--cf-border);
}
.lotrinh-header .entry-title { font-size: 32px; margin: 16px 0; line-height: 1.3; }
.lotrinh-header .entry-excerpt { font-size: 16px; color: var(--cf-text-muted); margin-bottom: 24px; line-height: 1.6; }

.lotrinh-header-thumb img {
    width: 100%; aspect-ratio: 16/8; object-fit: cover; border-radius: var(--cf-radius-sm);
}

.lotrinh-quick-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.stat-item { display: flex; align-items: center; gap: 12px; }
.stat-item span { font-size: 13px; color: var(--cf-text-muted); }
.stat-item strong { font-size: 15px; color: var(--cf-navy); }

.cf-lotrinh-layout { display: flex; gap: 32px; align-items: flex-start; padding-top: 20px; }

.lotrinh-content {
    flex: 1; min-width: 0; background: var(--cf-white); padding: 40px;
    border-radius: var(--cf-radius); border: 1px solid var(--cf-border);
    font-size: 16px; line-height: 1.8; color: #334155;
}
.lotrinh-content h2, .lotrinh-content h3 { margin-top: 32px; margin-bottom: 16px; color: var(--cf-navy); }
.lotrinh-content ul, .lotrinh-content ol { padding-left: 20px; margin-bottom: 24px; }
.lotrinh-content li { margin-bottom: 8px; }

.lotrinh-sidebar {
    width: 340px; flex-shrink: 0; position: sticky; top: 100px;
    display: flex; flex-direction: column; gap: 24px;
}

.widget-box {
    background: var(--cf-white); padding: 24px;
    border-radius: var(--cf-radius); border: 1px solid var(--cf-border);
}
.widget-box .widget-title { font-size: 18px; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--cf-border); }

.info-list { list-style: none; padding: 0; margin: 0; }
.info-list li { display: flex; gap: 12px; margin-bottom: 20px; align-items: flex-start; }
.info-list li:last-child { margin-bottom: 0; }
.info-list li div { flex: 1; }
.info-list li div strong { display: block; font-size: 14px; color: var(--cf-navy); margin-bottom: 4px; }
.info-list li div span { font-size: 14px; color: var(--cf-text-muted); }

.widget-lotrinh-toc ol { padding-left: 16px; margin: 0; font-size: 14px; }
.widget-lotrinh-toc ol li { margin-bottom: 12px; color: var(--cf-text-muted); }
.widget-lotrinh-toc ol li a { color: var(--cf-navy); text-decoration: none; transition: 0.2s; }
.widget-lotrinh-toc ol li a:hover { color: var(--cf-blue); }

/* Shortcode Lộ Trình Styles */
.lotrinh-content ul { list-style: none; padding-left: 0; }
.lotrinh-content ul li { position: relative; padding-left: 32px; margin-bottom: 12px; }
.lotrinh-content ul li::before {
    content: "✔"; position: absolute; left: 0; top: 2px;
    color: #10b981; font-weight: bold; background: #d1fae5;
    width: 20px; height: 20px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center; font-size: 10px;
}

.cf-timeline-wrap { position: relative; margin: 32px 0; }
.cf-timeline-wrap::before {
    content: ''; position: absolute; left: 23px; top: 0; bottom: 0;
    width: 2px; background: var(--cf-blue); z-index: 1;
}
.cf-stage-item { display: flex; gap: 24px; position: relative; margin-bottom: 24px; z-index: 2; }
.stage-step {
    width: 48px; height: 48px; flex-shrink: 0; background: var(--cf-blue); color: #fff;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 20px; font-weight: bold;
}

.stage-main {
    flex: 1; display: flex; align-items: center; gap: 24px; 
    background: var(--cf-white); padding: 24px; border-radius: var(--cf-radius);
    border: 1px solid var(--cf-border); box-shadow: 0 2px 8px rgba(11, 23, 54, 0.04);
}

.stage-col-1 { flex: 1.2; }
.stage-title { margin: 0 0 8px 0 !important; font-size: 18px; color: var(--cf-navy); display: flex; align-items: center; gap: 12px; }
.stage-time { font-size: 10px; background: #f1f5f9; color: #64748b; padding: 2px 10px; border-radius: 12px; font-weight: normal; }
.stage-desc-text { font-size: 14px; color: var(--cf-text-muted); margin: 0; line-height: 1.5; }

.stage-col-2 { flex: 1.5; }
.stage-col-2 ul { margin: 0; padding: 0; list-style: none; }
.stage-col-2 ul li { 
    position: relative; padding-left: 14px !important; margin-bottom: 8px !important; 
    font-size: 14px; color: #475569; line-height: 1.5;
}
.stage-col-2 ul li:last-child { margin-bottom: 0; }
.stage-col-2 ul li::before { 
    content: "•" !important; position: absolute !important; left: 0 !important; top: 0 !important; 
    background: transparent !important; color: #94a3b8 !important; font-size: 18px !important; 
    width: auto !important; height: auto !important; display: inline-block !important;
}

.stage-progress { 
    width: 120px; flex-shrink: 0; background: #f8fafc; 
    padding: 12px 16px; border-radius: 8px; border: 1px solid var(--cf-border);
}
.progress-label { display: flex; justify-content: space-between; font-size: 12px; color: var(--cf-text-muted); margin-bottom: 8px; }
.progress-label strong { color: var(--cf-navy); }
.progress-bar { width: 100%; height: 6px; background: #e2e8f0; border-radius: 10px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--cf-blue); }

.stage-col-2 #ez-toc-container,
.stage-col-2 .rank-math-toc,
.stage-col-2 .toc_container,
.stage-col-2 > p:first-child { display: none !important; }

/* FAQ Accordion */
.cf-faq-item { border-bottom: 1px solid var(--cf-border); }
.faq-question { 
    padding: 20px 0; font-size: 16px; font-weight: 600; color: var(--cf-navy); 
    cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: color 0.3s ease; 
}
.faq-question:hover { color: var(--cf-blue); }
.faq-question .faq-icon { 
    display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; 
    border-radius: 50%; background: #f1f5f9; color: #64748b; transition: all 0.3s ease; flex-shrink: 0; margin-left: 16px;
}
.faq-question:hover .faq-icon { background: rgba(37, 99, 235, 0.1); color: var(--cf-blue); }
.faq-question.active { color: var(--cf-blue); }
.faq-question.active .faq-icon { 
    transform: rotate(180deg); background: var(--cf-blue); color: #ffffff; box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2); 
}
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1); }
.faq-answer-inner { padding-bottom: 24px; color: var(--cf-text-muted); line-height: 1.7; }

/* Tools & Project Sidebar Boxes */
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tool-item { 
    border: 1px solid var(--cf-border); border-radius: 12px; padding: 16px 8px; 
    text-align: center; background: var(--cf-white); transition: transform 0.3s;
}
.tool-item:hover { transform: translateY(-3px); box-shadow: var(--cf-shadow-hover); }
.tool-icon { margin-bottom: 12px; height: 36px; display: flex; align-items: center; justify-content: center; }
.tool-icon img { max-width: 36px; max-height: 36px; object-fit: contain; }
.tool-item strong { display: block; font-size: 13px; color: var(--cf-navy); margin-bottom: 4px; line-height: 1.2; }
.tool-item span { display: block; font-size: 11px; color: var(--cf-text-muted); line-height: 1.3; }

.widget-lotrinh-project {
    background: #f0f9ff; border: 1px solid #bae6fd; position: relative; overflow: hidden; padding-bottom: 32px;
}
.widget-lotrinh-project .widget-title { border-bottom: none; padding-bottom: 0; color: var(--cf-navy); margin-bottom: 12px; }
.widget-lotrinh-project p { font-size: 14px; color: var(--cf-text-muted); margin-bottom: 20px; line-height: 1.6; position: relative; z-index: 2; }
.widget-lotrinh-project ul { list-style: none; padding: 0; margin: 0; position: relative; z-index: 2; }
.widget-lotrinh-project ul li { position: relative; padding-left: 28px; margin-bottom: 10px; font-size: 14px; color: #334155; line-height: 1.5; }
.widget-lotrinh-project ul li::before {
    content: "✔"; position: absolute; left: 0; top: 2px;
    color: #fff; background: #10b981; width: 18px; height: 18px; border-radius: 50%; 
    display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: bold;
}
.project-trophy { position: absolute; right: 12px; bottom: 8px; width: 80px; height: 80px; z-index: 1; opacity: 0.95; pointer-events: none; }

.icon-wrap {
    width: 48px; height: 48px; background: rgba(37, 99, 235, 0.08); color: var(--cf-blue);
    border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.icon-wrap svg { width: 22px; height: 22px; }

/* ==========================================================================
   11. RESPONSIVE (Mobile & Tablet)
   ========================================================================== */
@media (max-width: 1024px) {
    .topics-grid { grid-template-columns: repeat(3, 1fr); }
    .flex-layout { flex-direction: column; }
    .sidebar-col { width: 100%; }
    .footer-top { flex-direction: column; gap: 40px; }
    .footer-menus { grid-template-columns: repeat(2, 1fr); }
    .featured-grid { flex-direction: column; }
    .card-featured-small { min-height: 140px; }
    .card-featured-small .post-info { padding-right: 0;}
    .post-grid-2, .post-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .cf-latest-with-sidebar .flex-layout { flex-direction: column; }
    .sidebar-col { width: 100%; position: static; }
    .lotrinh-header { grid-template-columns: 1fr; padding: 24px; }
    .cf-lotrinh-layout { flex-direction: column; }
    .lotrinh-sidebar { width: 100%; position: static; }
    .lotrinh-content { padding: 24px; }
}

@media (max-width: 768px) {
    body { overflow-x: hidden; }
    .cf-container { padding: 0 16px; }
    
    .cf-hero { width: 100%; overflow: hidden; box-sizing: border-box; padding: 40px 0; }
    .hero-inner { width: 100%; padding: 0; flex-direction: column; text-align: center; }
    
    .hero-title { font-size: 32px; word-wrap: break-word; }
    .hero-desc { font-size: 16px; margin: 0 auto 24px; }

    .hero-search-box form { width: 100%; max-width: 100%; box-sizing: border-box; margin: 0 auto; }
    .search-input-wrap { padding-left: 12px; min-width: 0; }
    .search-input-wrap input[type="search"] { width: 100%; min-width: 0; font-size: 14px; padding-left: 30px; }
    .hero-search-box .btn-primary { padding: 10px 16px; font-size: 14px; }

    .header-actions { gap: 12px; }
    .header-cta { display: none; }
    
    .menu-toggle { 
        display: block !important; background: none; border: none; 
        cursor: pointer; padding: 4px; position: relative; z-index: 1000; 
    }
    .menu-toggle .icon-bar { 
        display: block; width: 24px; height: 2px; background: var(--cf-navy); 
        margin: 5px 0; transition: 0.3s;
    }
    
    .main-navigation {
        position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
        background: var(--cf-white); box-shadow: -4px 0 24px rgba(11, 23, 54, 0.1);
        transition: right 0.3s ease; z-index: 999; padding: 80px 24px 30px; overflow-y: auto;
    }
    .main-navigation.toggled { right: 0; }
    .main-navigation ul { flex-direction: column; gap: 24px; font-size: 18px; display: flex; }

    /* Slider Nổi bật trên Mobile */
    .featured-grid {
        display: flex !important; flex-direction: row !important; flex-wrap: nowrap !important;
        overflow-x: auto; overflow-y: hidden; gap: 16px; padding-bottom: 24px;
        scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none;
    }
    .featured-grid::-webkit-scrollbar { display: none; }
    .featured-large-col, .featured-small-col { display: contents; }
    .card-featured-large, .card-featured-small {
        flex: 0 0 85%; scroll-snap-align: center; display: flex; flex-direction: column; height: auto;
    }
    .card-featured-large .post-thumb, .card-featured-small .post-thumb { width: 100%; max-width: 100%; }
    .card-featured-large .post-thumb img, .card-featured-small .post-thumb img { aspect-ratio: 16/9; width: 100%; height: auto; }
    .card-featured-small .post-info, .card-featured-large .post-info { padding: 16px; display: flex; flex-direction: column; justify-content: flex-start; }
    .card-featured-large .post-title { font-size: 18px; margin-bottom: 8px; }
    .card-featured-large .post-excerpt { display: none; }

    /* Slider Bài mới nhất trên Mobile */
    .post-grid-2, .post-grid-3 {
        display: flex !important; flex-direction: row !important; flex-wrap: nowrap !important;
        overflow-x: auto; overflow-y: hidden; gap: 16px; padding-bottom: 24px;
        margin: 0 -16px; padding-left: 16px; padding-right: 16px;
        scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none;
    }
    .post-grid-2::-webkit-scrollbar, .post-grid-3::-webkit-scrollbar { display: none; }
    .post-grid-2 .card-grid-item, .post-grid-3 .card-grid-item { flex: 0 0 85%; scroll-snap-align: center; height: auto; }

    /* Timeline Lộ Trình Mobile */
    .stage-main { flex-direction: column; align-items: flex-start; gap: 16px; }
    .stage-col-1, .stage-col-2, .stage-progress { width: 100%; }
}

@media (max-width: 480px) {
    .topics-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-menus { grid-template-columns: 1fr; }
    .card-featured-small { flex-direction: column; }
    .card-featured-small .post-thumb { width: 100%; max-width: 100%; height: 200px; margin-bottom: 16px; }
    .card-featured-small .post-info { padding-left: 0;}
}

/* Thu nhỏ icon trong khung Thông tin lộ trình sidebar */
.info-list li .icon-wrap-sm {
    width: 44px !important;
    height: 44px !important;
    flex-shrink: 0;
}
.info-list li .icon-wrap-sm svg {
    width: 40px !important;
    height: 40px !important;
    stroke-width: 2 !important; /* Làm đường viền icon mảnh và sắc nét hơn */
}

/* ==========================================================================
   TRANG CHI TIẾT BÀI VIẾT (SINGLE POST)
   ========================================================================== */
.single-content-col {
    flex: 1; min-width: 0; background: var(--cf-white); 
    padding: 40px; border-radius: var(--cf-radius); border: 1px solid var(--cf-border);
}
.single-sidebar-col {
    width: 340px; flex-shrink: 0; position: sticky; top: 100px;
}

/* Header & Meta */
.single-header { margin-bottom: 32px; }
.single-header .entry-title { font-size: 36px; line-height: 1.3; margin-bottom: 16px; }
.single-excerpt { font-size: 18px; color: var(--cf-text-muted); line-height: 1.6; margin-bottom: 24px; }
.single-meta-share {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 16px; border-top: 1px solid var(--cf-border);
    font-size: 14px; color: var(--cf-text-muted);
}
.meta-left { display: flex; gap: 20px; }
.meta-left strong { color: var(--cf-navy); }
.share-right { display: flex; align-items: center; gap: 12px; }
.share-btn {
    width: 32px; height: 32px; border-radius: 50%; background: #f1f5f9;
    display: flex; align-items: center; justify-content: center;
    color: var(--cf-navy); text-decoration: none; font-weight: bold; font-family: sans-serif;
}
.share-btn:hover { background: var(--cf-blue); color: var(--cf-white); }

/* Ảnh đại diện & Nội dung */
.single-featured-image { margin-bottom: 32px; border-radius: var(--cf-radius-sm); overflow: hidden; }
.single-featured-image img { width: 100%; height: auto; }
.entry-content { font-size: 17px; line-height: 1.8; color: #334155; }
.entry-content h2, .entry-content h3 { color: var(--cf-navy); margin: 32px 0 16px; }

/* Khối Quảng Cáo (Ads) */
.cf-ad-box {
    background: #f8fafc; border: 1px dashed #cbd5e1;
    padding: 24px; text-align: center; margin: 32px 0;
    color: #94a3b8; font-weight: 500; letter-spacing: 1px;
}

/* Box Tác giả */
.author-box {
    display: flex; gap: 24px; padding: 24px;
    background: #f8fafc; border: 1px solid var(--cf-border); border-radius: var(--cf-radius);
	margin-top: 50px;
}
.author-avatar img { border-radius: 50%; width: 80px; height: 80px; }
.author-info h4 { margin: 0 0 8px 0; font-size: 16px; }
.author-info h4 span { color: var(--cf-blue); }
.author-info p { margin: 0; font-size: 14px; color: var(--cf-text-muted); }

/* Thẻ Tags */
.single-tags { font-size: 14px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 20px; margin-bottom: 20px; }
.single-tags a {
    background: #f1f5f9; color: var(--cf-text-muted); padding: 4px 12px;
    border-radius: 16px; transition: 0.2s;
}
.single-tags a:hover { background: var(--cf-blue); color: var(--cf-white); }

/* Sidebar Widget */
.widget-search input {
    width: 100%; padding: 12px; border: 1px solid var(--cf-border);
    border-radius: var(--cf-radius-sm); margin-bottom: 12px; outline: none;
}
.widget-search input:focus { border-color: var(--cf-blue); }
.w-100 { width: 100%; }

.topic-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.topic-tags a {
    border: 1px solid var(--cf-border); padding: 6px 14px;
    border-radius: 20px; font-size: 13px; color: var(--cf-text-muted);
}
.topic-tags a:hover { border-color: var(--cf-blue); color: var(--cf-blue); }

@media (max-width: 1024px) {
    .single-content-col { padding: 24px; }
    .single-meta-share { flex-direction: column; align-items: flex-start; gap: 16px; }
}

/* Shortcode Mục lục */
.cf-toc-box { background: #f0f9ff; padding: 24px; border-radius: 12px; margin-bottom: 32px; }
.cf-toc-box h4 { margin: 0 0 16px; color: var(--cf-navy); }
.toc-cols ul { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; margin: 0; padding: 0; }
.toc-cols ul li { font-size: 14px; font-weight: 500; color: var(--cf-blue); }

/* Shortcode Box Thực hành */
.cf-practice-box { display: flex; gap: 24px; background: #f8fafc; padding: 24px; border: 1px solid var(--cf-border); border-radius: 12px; margin: 32px 0; align-items: center; }
.cf-practice-box .box-img { width: 150px; flex-shrink: 0; }
.cf-practice-box .box-content h4 { margin: 0 0 12px; }
.cf-practice-box ul { list-style: none; padding: 0; margin: 0; }
.cf-practice-box ul li { position: relative; padding-left: 24px; margin-bottom: 8px; font-size: 14px; }
.cf-practice-box ul li::before { content: "☑"; position: absolute; left: 0; top: 0; color: var(--cf-blue); font-size: 16px; }
@media(max-width: 768px){ .cf-practice-box { flex-direction: column; } .toc-cols ul { grid-template-columns: 1fr; } }

/* --- FIX META & SHARE BÀI VIẾT --- */
.single-meta-share {
    display: flex !important; 
    justify-content: space-between !important; 
    align-items: center !important;
    padding-top: 16px; 
    border-top: 1px solid var(--cf-border);
    font-size: 14px; 
    color: var(--cf-text-muted);
    margin-bottom: 32px;
}
.meta-left { display: flex; gap: 20px; flex-wrap: wrap; }
.meta-item { display: flex; align-items: center; gap: 6px; }
.meta-item svg { color: var(--cf-text-muted); margin-top: -2px; }
.meta-left strong { color: var(--cf-navy); font-weight: 600; }

.share-right { display: flex; align-items: center; gap: 12px; }
.share-btn {
    width: 32px; height: 32px; border-radius: 50%; background: #f1f5f9;
    display: flex; align-items: center; justify-content: center;
    color: var(--cf-navy); text-decoration: none; transition: 0.3s;
}
.share-btn:hover { background: var(--cf-blue); color: var(--cf-white); }

/* --- FIX Ô TÌM KIẾM SIDEBAR --- */
.widget-search form { 
    position: relative; 
    display: flex; 
    flex-direction: column; 
    gap: 12px; 
}
.widget-search input[type="search"] {
    width: 100% !important; 
    padding: 12px 16px 12px 36px !important; 
    border: 1px solid var(--cf-border) !important; 
    border-radius: var(--cf-radius-sm) !important; 
    font-size: 14px !important; 
    font-family: var(--font-body) !important;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="%2394a3b8" stroke-width="2"><circle cx="11" cy="11" r="8"></circle><line x1="21" y1="21" x2="16.65" y2="16.65"></line></svg>') no-repeat 12px center;
    background-size: 16px;
    box-sizing: border-box !important;
}
.widget-search input[type="search"]:focus { border-color: var(--cf-blue) !important; outline: none; }
.widget-search .btn-primary { 
    width: 100% !important; 
    padding: 12px !important; 
    font-size: 15px !important; 
    border-radius: var(--cf-radius-sm) !important; 
}

/* Phân cấp H2 và H3 trong mục lục */
.cf-toc-box .toc-cols ul li.toc-h2 {
    font-weight: 600; /* H2 in đậm hơn một chút */
    margin-top: 8px; /* Tách H2 ra một chút cho dễ nhìn */
    position: relative;
    padding-left: 14px;
}
.cf-toc-box .toc-cols ul li.toc-h2::before {
    content: "•";
    position: absolute; left: 0; top: 0;
    color: var(--cf-text-muted);
}

.cf-toc-box .toc-cols ul li.toc-h3 {
    padding-left: 20px; /* Thụt lề H3 vào trong */
    font-size: 14px; /* Chữ H3 nhỏ hơn H2 một chút */
    position: relative;
}
.cf-toc-box .toc-cols ul li.toc-h3::before {
    content: "-";
    position: absolute; left: 8px; top: 0;
    color: #cbd5e1; /* Dấu gạch ngang nhạt màu cho mục con */
}
.cf-toc-box .toc-cols ul li.toc-h3 a {
    color: var(--cf-text-muted);
    font-weight: 400;
}

/* Style cho Card Lộ trình ngoài trang chủ */
.cf-card {
    background: var(--cf-white);
    border: 1px solid var(--cf-border);
    border-radius: var(--cf-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.cf-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}
.card-thumb {
    height: 180px;
    overflow: hidden;
    display: block;
}
.card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.cf-card:hover .card-thumb img {
    transform: scale(1.05);
}
.card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.card-meta {
    font-size: 13px;
    color: var(--cf-text-muted);
    margin-bottom: 8px;
    display: flex;
    gap: 12px;
}
.card-title {
    font-size: 18px;
    margin-bottom: 10px;
    font-weight: 600;
    line-height: 1.4;
}
.card-title a {
    color: var(--cf-navy);
    text-decoration: none;
}
.card-title a:hover {
    color: var(--cf-blue);
}
.card-desc {
    font-size: 14px;
    color: var(--cf-text-muted);
    margin-bottom: 20px;
    flex: 1;
    line-height: 1.5;
}
/* ==========================================================
   CSS KHỐI LỘ TRÌNH HỌC (HOMEPAGE) - OPTIMIZED
   ========================================================== */

.cf-learning-paths .paths-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 24px;
}

.cf-learning-paths .path-card {
    background: var(--cf-white, #fff);
    border: 1px solid var(--cf-border, #e2e8f0);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cf-learning-paths .path-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px -3px rgba(0, 0, 0, 0.08);
}

/* Phần Ảnh đại diện */
.cf-learning-paths .path-thumb {
    position: relative;
    height: 190px;
    overflow: hidden;
    background: #f1f5f9;
}

.cf-learning-paths .path-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.cf-learning-paths .path-card:hover .path-thumb img {
    transform: scale(1.05);
}

/* Icon nổi góc trái (Gộp chung vị trí bottom/left và style ảnh con) */
.cf-learning-paths .path-icon {
    position: absolute;
    bottom: 10px;
    left: 20px;
    width: 44px;
    height: 44px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border: 2px solid #fff;
    z-index: 2;
}

.cf-learning-paths .path-icon img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

/* Phần Nội dung text */
.cf-learning-paths .path-info {
    padding: 24px 20px 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.cf-learning-paths .path-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--cf-navy, #0f172a);
    margin: 0 0 8px;
    line-height: 1.4;
}

.cf-learning-paths .path-info p {
    font-size: 14px;
    color: var(--cf-text-muted, #64748b);
    margin: 0 0 20px;
    line-height: 1.5;
    flex: 1;
}

/* Nút Xem lộ trình */
.cf-learning-paths .path-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: #2563eb;
    text-decoration: none;
    transition: gap 0.2s ease;
}

.cf-learning-paths .path-link:hover {
    gap: 10px;
    color: #1d4ed8;
}

/* Responsive cho màn hình nhỏ */
@media (max-width: 992px) {
    .cf-learning-paths .paths-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .cf-learning-paths .paths-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================
   FIX ÉP HIỂN THỊ CARD NGANG (TRANG CATEGORY)
   ========================================================== */

/* Ép Lưới hiển thị bài viết mới (2 Cột) */
.cat-latest-section .post-grid-2-horizontal {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 24px;
    margin-top: 24px;
    margin-bottom: 40px;
}

/* Ép thẻ bài viết dạng Ngang (Image Left, Text Right) */
.cat-latest-section .card-horizontal {
    display: flex !important;
    flex-direction: row !important; /* Ép nằm ngang */
    align-items: stretch;
    gap: 20px;
    background: var(--cf-white, #fff);
    border: 1px solid var(--cf-border, #e2e8f0);
    border-radius: 12px;
    padding: 16px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
}

.cat-latest-section .card-horizontal:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.04);
}

/* Ép cứng khung ảnh thumbnail bên trái */
.cat-latest-section .card-horizontal .post-thumb {
    width: 160px !important; 
    height: 160px !important;
    flex-shrink: 0 !important; /* Không cho ảnh bị bóp méo */
    border-radius: 8px;
    overflow: hidden;
    display: block;
}

.cat-latest-section .card-horizontal .post-thumb img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important; /* Lấp đầy khung hình chữ nhật */
}

/* Khung chữ bên phải */
.cat-latest-section .card-horizontal .post-info {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    flex: 1;
    min-width: 0; /* Sửa lỗi text tràn khung trong Flexbox */
}

.cat-latest-section .card-horizontal .cat-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--cf-blue, #2563eb);
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.cat-latest-section .card-horizontal .post-title {
    font-size: 18px;
    margin: 0 0 8px 0;
    line-height: 1.4;
    font-weight: 600;
}

.cat-latest-section .card-horizontal .post-title a {
    color: var(--cf-navy, #0f172a);
    text-decoration: none;
}

.cat-latest-section .card-horizontal .post-excerpt {
    font-size: 14px;
    color: var(--cf-text-muted, #64748b);
    margin: 0 0 12px 0;
    line-height: 1.5;
    flex: 1;
}

.cat-latest-section .card-horizontal .post-meta {
    font-size: 13px;
    color: var(--cf-text-muted, #64748b);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* --- ĐIỆN THOẠI & TABLET --- */
@media (max-width: 992px) {
    .cat-latest-section .post-grid-2-horizontal { 
        grid-template-columns: 1fr !important; 
    }
}
@media (max-width: 576px) {
    .cat-latest-section .card-horizontal { 
        flex-direction: column !important; /* Mobile thì cho dọc lại */
    }
    .cat-latest-section .card-horizontal .post-thumb { 
        width: 100% !important; 
        height: 200px !important; 
    }
}

/* ==========================================================
   FIX LAYOUT: CHIA CỘT NỘI DUNG CHÍNH & SIDEBAR
   ========================================================== */
.flex-layout {
    display: flex;
    flex-wrap: wrap; 
    gap: 40px; /* Khoảng cách thở giữa bài viết và sidebar */
    align-items: flex-start; /* Giúp sidebar không bị kéo giãn chiều cao vô lý */
}

/* Cột nội dung bên trái */
.main-content-col {
    flex: 1; /* Tự động chiếm phần diện tích còn lại */
    min-width: 0; /* Fix lỗi vỡ layout flexbox trên một số trình duyệt */
}

/* Cột sidebar bên phải */
.sidebar-col {
    width: 320px; /* Chiều rộng cố định chuẩn cho sidebar */
    flex-shrink: 0; /* Cấm sidebar bị bóp méo khi màn hình nhỏ lại */
    position: sticky; /* Hiệu ứng sidebar trượt theo màn hình (tùy chọn) */
    top: 30px;
}

/* Ép lại giao diện cho Mobile và Tablet (Màn hình nhỏ thì sidebar rớt xuống dưới là chuẩn) */
@media (max-width: 992px) {
    .flex-layout {
        flex-direction: column; /* Đổi thành xếp dọc */
        gap: 32px;
    }
    .sidebar-col {
        width: 100%; /* Tràn viền 100% trên điện thoại */
        position: static;
    }
}

/* ==========================================================
   TRANG KẾT QUẢ TÌM KIẾM (SEARCH PAGE)
   ========================================================== */

/* Header Search Form */
.search-form-page {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    max-width: 800px;
}
.search-input-wrap {
    position: relative;
    flex: 1;
}
.search-input-wrap .search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
}
.search-input-wrap .search-field {
    width: 100%;
    padding: 14px 16px 14px 44px;
    border: 1px solid var(--cf-border, #e2e8f0);
    border-radius: 8px;
    font-size: 16px;
    outline: none;
    transition: 0.2s;
    box-sizing: border-box;
}
.search-input-wrap .search-field:focus {
    border-color: var(--cf-blue, #2563eb);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.search-form-page .search-submit {
    padding: 0 32px;
    background: var(--cf-blue, #2563eb);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.2s;
}
.search-form-page .search-submit:hover {
    background: #1d4ed8;
}
.search-results-count {
    font-size: 16px;
    color: var(--cf-text-muted, #64748b);
    padding-bottom: 24px;
    border-bottom: 1px solid var(--cf-border, #e2e8f0);
}

/* List Card (1 Cột) */
.search-results-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}
.card-list-item {
    display: flex;
    align-items: stretch;
    gap: 24px;
    background: var(--cf-white, #fff);
    border-radius: 12px;
    transition: transform 0.2s ease;
}
.card-list-item:hover {
    transform: translateY(-2px);
}
.card-list-item .post-thumb {
    width: 280px; /* Ảnh to hơn bên trang category */
    height: 180px;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
}
.card-list-item .post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}
.card-list-item:hover .post-thumb img {
    transform: scale(1.05);
}
.card-list-item .post-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
}
.card-list-item .cat-label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--cf-blue, #2563eb);
    margin-bottom: 8px;
}
.card-list-item .post-title {
    font-size: 20px;
    margin: 0 0 12px 0;
    line-height: 1.4;
    font-weight: 600;
}
.card-list-item .post-title a {
    color: var(--cf-navy, #0f172a);
    text-decoration: none;
}
.card-list-item .post-excerpt {
    font-size: 15px;
    color: var(--cf-text-muted, #64748b);
    margin: 0 0 16px 0;
    line-height: 1.5;
}
.card-list-item .post-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--cf-text-muted, #64748b);
    margin-top: auto;
}
.card-list-item .post-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Responsive */
@media (max-width: 768px) {
    .search-form-page { flex-direction: column; }
    .search-form-page .search-submit { padding: 14px; }
    .card-list-item { flex-direction: column; }
    .card-list-item .post-thumb { width: 100%; height: 220px; }
}

/* ==========================================================
   1. TRANG GIỚI THIỆU (ABOUT PAGE - SCOPED)
   ========================================================== */
.about-page section {
    margin-bottom: 80px;
}
.about-page .text-center { text-align: center; }
.about-page .section-title {
    font-size: 32px; font-weight: 700; color: var(--cf-navy, #0f172a); margin-bottom: 16px;
}
.about-page .section-subtitle {
    font-size: 16px; color: var(--cf-text-muted, #64748b); max-width: 700px; margin: 0 auto 40px; line-height: 1.6;
}

/* Hero Section */
.about-page .about-hero {
    display: flex; align-items: center; gap: 40px;
}
.about-page .hero-content { flex: 1; }
.about-page .hero-label {
    font-size: 13px; font-weight: 700; color: var(--cf-blue, #2563eb); text-transform: uppercase; letter-spacing: 1px; display: block; margin-bottom: 16px;
}
.about-page .hero-title { font-size: 48px; font-weight: 800; color: var(--cf-navy); line-height: 1.2; margin-bottom: 24px; }
.about-page .hero-desc { font-size: 18px; color: var(--cf-text-muted); line-height: 1.6; }
.about-page .hero-image { flex: 1; border-radius: 20px; overflow: hidden; }
.about-page .hero-image img { width: 100%; height: auto; display: block; }

/* Values Grid */
.about-page .values-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.about-page .value-card {
    background: #fff; border: 1px solid var(--cf-border, #e2e8f0); border-radius: 16px; padding: 40px 24px; text-align: center;
}
.about-page .value-icon {
    width: 64px; height: 64px; background: #eff6ff; color: var(--cf-blue); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px;
}
.about-page .value-card h3 { font-size: 20px; margin-bottom: 12px; color: var(--cf-navy); }
.about-page .value-card p { font-size: 15px; color: var(--cf-text-muted); line-height: 1.5; }

/* Topics Grid riêng cho trang Giới thiệu */
.about-page .about-topics {
    background: #f8fafc; padding: 60px 40px; border-radius: 24px;
}
.about-page .about-topics-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
.about-page .about-topic-card {
    background: #fff; border-radius: 16px; overflow: hidden; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05); text-align: left;
}
.about-page .topic-thumb { height: 180px; }
.about-page .topic-thumb img { width: 100%; height: 100%; object-fit: cover; }
.about-page .topic-info { padding: 30px 24px 24px; position: relative; }
.about-page .topic-icon-abs {
    width: 48px; height: 48px; background: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--cf-blue); box-shadow: 0 4px 10px rgba(0,0,0,0.1); position: absolute; top: -24px; left: 24px;
}
.about-page .topic-info h3 { font-size: 18px; margin-bottom: 8px; color: var(--cf-navy); }
.about-page .topic-info p { font-size: 14px; color: var(--cf-text-muted); margin: 0; line-height: 1.5; }

/* Editorial Section */
.about-page .about-editorial {
    display: flex; align-items: center; gap: 60px;
}
.about-page .editorial-content { flex: 1; }
.about-page .editorial-content p { font-size: 16px; color: var(--cf-text-muted); margin-bottom: 32px; line-height: 1.6; }
.about-page .editorial-list { list-style: none; padding: 0; margin: 0; }
.about-page .editorial-list li {
    display: flex; align-items: center; gap: 12px; font-size: 16px; font-weight: 500; color: var(--cf-navy); margin-bottom: 16px;
}
.about-page .editorial-image { flex: 1; border-radius: 20px; overflow: hidden; }
.about-page .editorial-image img { width: 100%; height: auto; }

/* Team Grid */
.about-page .team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.about-page .team-card {
    display: flex; align-items: center; gap: 16px; background: #fff; border: 1px solid var(--cf-border); border-radius: 12px; padding: 16px; text-align: left;
}
.about-page .team-card img { width: 80px; height: 80px; border-radius: 8px; object-fit: cover; flex-shrink: 0; }
.about-page .team-card h4 { font-size: 16px; margin: 0 0 4px; color: var(--cf-navy); }
.about-page .team-card p { font-size: 13px; color: var(--cf-text-muted); margin: 0; line-height: 1.4; }

/* Newsletter */
.about-page .about-newsletter {
    background: #f1f5f9; border-radius: 20px; padding: 40px; display: flex; align-items: center; justify-content: space-between; gap: 40px;
}
.about-page .nl-content { display: flex; align-items: center; gap: 20px; flex: 1; }
.about-page .nl-icon {
    width: 64px; height: 64px; background: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--cf-blue); flex-shrink: 0;
}
.about-page .nl-content h3 { font-size: 20px; margin: 0 0 8px; color: var(--cf-navy); }
.about-page .nl-content p { font-size: 15px; color: var(--cf-text-muted); margin: 0; }
.about-page .nl-form { display: flex; gap: 12px; flex: 1; max-width: 450px; }
.about-page .nl-form input {
    flex: 1; padding: 14px 20px; border: 1px solid #cbd5e1; border-radius: 8px; outline: none; background: #fff;
}
.about-page .nl-form button {
    background: var(--cf-blue); color: #fff; border: none; padding: 0 24px; border-radius: 8px; font-weight: 600; cursor: pointer; transition: 0.2s;
}
.about-page .nl-form button:hover { background: #1d4ed8; }


/* ==========================================================
   2. TRANG LIÊN HỆ (CONTACT PAGE - SCOPED)
   ========================================================== */
.page-contact .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 20px;
}
.page-contact .contact-form-box {
    background: #fff;
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--cf-border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
}

/* Style Form */
.page-contact .cf-form .form-group {
    margin-bottom: 20px;
}
.page-contact .cf-form label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--cf-navy);
    margin-bottom: 8px;
}
.page-contact .cf-form input[type="text"],
.page-contact .cf-form input[type="email"],
.page-contact .cf-form select,
.page-contact .cf-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-family: inherit;
    font-size: 15px;
    outline: none;
    transition: all 0.2s;
    background: #fff;
}
.page-contact .cf-form input:focus,
.page-contact .cf-form select:focus,
.page-contact .cf-form textarea:focus {
    border-color: var(--cf-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.page-contact .select-wrapper {
    position: relative;
}
.page-contact .select-wrapper::after {
    content: "▼";
    font-size: 10px;
    color: #64748b;
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}
.page-contact .cf-form select {
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
}

/* Checkbox Style */
.page-contact .checkbox-group {
    margin-top: 24px;
    margin-bottom: 24px !important;
}
.page-contact .cf-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400 !important;
    color: var(--cf-text-muted) !important;
    cursor: pointer;
}
.page-contact .cf-checkbox input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--cf-blue);
}
.page-contact .cf-checkbox a {
    color: var(--cf-blue);
    text-decoration: none;
}

/* Info Cards */
.page-contact .contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.page-contact .info-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: #fff;
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--cf-border);
}
.page-contact .info-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.page-contact .info-icon.icon-blue {
    background: #eff6ff;
    color: var(--cf-blue);
}
.page-contact .info-icon.icon-green {
    background: #f0fdf4;
    color: #16a34a;
}
.page-contact .info-text h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--cf-navy);
    margin: 0 0 4px 0;
}
.page-contact .info-text p {
    font-size: 14px;
    color: var(--cf-text-muted);
    margin: 0;
}

/* Pre-contact Section */
.page-contact .pre-contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.page-contact .pre-card {
    background: #fff;
    padding: 32px 24px;
    border-radius: 16px;
    border: 1px solid var(--cf-border);
    text-align: left;
}
.page-contact .pre-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: #f8fafc;
    color: #0ea5e9;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}
.page-contact .pre-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--cf-navy);
    margin-bottom: 12px;
}
.page-contact .pre-card p {
    font-size: 14px;
    color: var(--cf-text-muted);
    line-height: 1.6;
    margin: 0;
}

/* FAQ Accordion */
.page-contact .faq-item {
    background: #fff;
    border: 1px solid var(--cf-border);
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
}
.page-contact .faq-item summary {
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--cf-navy);
    cursor: pointer;
    list-style: none;
    position: relative;
    user-select: none;
}
.page-contact .faq-item summary::-webkit-details-marker {
    display: none;
}
.page-contact .faq-item summary::after {
    content: "▼";
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: #64748b;
    transition: transform 0.3s;
}
.page-contact .faq-item[open] summary::after {
    transform: translateY(-50%) rotate(180deg);
}
.page-contact .faq-item[open] summary {
    border-bottom: 1px solid var(--cf-border);
}
.page-contact .faq-content {
    padding: 20px 24px;
    font-size: 15px;
    color: var(--cf-text-muted);
    line-height: 1.6;
    background: #f8fafc;
}
.page-contact .faq-content p {
    margin: 0;
}

/* Responsive chung cho cả 2 trang */
@media (max-width: 992px) {
    .about-page .about-hero, .about-page .about-editorial { flex-direction: column; text-align: center; }
    .about-page .editorial-list li { justify-content: center; }
    .about-page .about-newsletter { flex-direction: column; text-align: center; }
    .about-page .nl-content { flex-direction: column; }
    
    .page-contact .contact-grid,
    .page-contact .pre-contact-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    .about-page .hero-title { font-size: 32px; }
    .about-page .values-grid, .about-page .about-topics-grid, .about-page .team-grid { grid-template-columns: 1fr; }
    .about-page .nl-form { flex-direction: column; width: 100%; max-width: 100%; }
    .about-page .nl-form button { padding: 14px; }
}

.entry-content	p {padding-top: 10px;}
.entry-content ul, ol {    
	list-style: disc;
    padding-left: 50px;
	}
.entry-content h2,h3,h4 {
	padding-top: 5px;
}

/* ==========================================================
   TÙY CHỈNH ICON FAQ (TRANG LIÊN HỆ)
   ========================================================== */

/* 1. Ẩn icon tam giác đen mặc định của trình duyệt */
.faq-list .faq-item summary {
    list-style: none; /* Dành cho Firefox/Edge */
    position: relative;
    padding-right: 40px; /* Chừa khoảng trống bên phải để đặt icon mới */
    cursor: pointer;
}

.faq-list .faq-item summary::-webkit-details-marker {
    display: none; /* Dành cho Chrome/Safari */
}

/* 2. Tạo icon mũi tên chữ V (Chevron) hiện đại bằng viền CSS */
.faq-list .faq-item summary::after {
    content: '';
    position: absolute;
    right: 20px;
    top: 50%;
    width: 10px;
    height: 10px;
    border-right: 2px solid #64748b; /* Màu xám cho icon */
    border-bottom: 2px solid #64748b;
    /* Căn giữa và xoay thành hình chữ V chỉ xuống */
    transform: translateY(-70%) rotate(45deg); 
    transition: transform 0.3s ease, border-color 0.3s ease;
}

/* 3. Đổi màu icon khi hover chuột */
.faq-list .faq-item summary:hover::after {
    border-color: #0d6efd; /* Chuyển sang màu xanh primary */
}

/* 4. Hiệu ứng xoay mũi tên ngược lên khi click mở câu hỏi */
.faq-list .faq-item[open] summary::after {
    /* Xoay 225 độ để mũi tên chỉ lên trên */
    transform: translateY(-30%) rotate(225deg);
    border-color: #0d6efd; /* Giữ màu xanh khi đang mở */
}

/* Mượt mà hóa phần nội dung bên trong khi mở */
.faq-list .faq-content {
    animation: fadeInDown 0.3s ease-in-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}