:root {
  --primary: #1B5B6E;
  --primary-dark: #0d3a47;
  --accent: #E8711A;
  --accent-hover: #cf5e0e;
  --logo-red: #C8102E;
  --bg-light: #F5F7FA;
  --bg-section: #f9fafb;
  --text-dark: #1a1a1a;
  --text-gray: #6b7280;
  --border: #e5e7eb;
  --white: #ffffff;
  --success: #16a34a;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

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

body {
  font-family: 'Be Vietnam Pro', sans-serif;
  color: var(--text-dark);
  background-color: var(--white);
  line-height: 1.5;
}

a {
  text-decoration: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 2. Header (sticky, 72px, logo-img 44px) */


.header.scrolled {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}





.nav-menu {
  flex: 1;
  padding: 0 2vw;
}
.nav-menu ul {
  display: flex;
  justify-content: space-evenly;
  gap: 16px;
}

.nav-menu a {
  white-space: nowrap;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  position: relative;
  transition: color 0.2s;
}

.nav-menu a:hover {
  color: var(--primary);
}

.active-dot {
  color: var(--accent);
  font-size: 10px;
  margin-left: 4px;
  vertical-align: super;
}



.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-light);
  border-radius: 20px;
  padding: 6px 12px;
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 13px;
  width: 150px;
  font-family: 'Be Vietnam Pro', sans-serif;
}

.search-box button {
  background: transparent;
  border: none;
  color: var(--text-gray);
  cursor: pointer;
}

.hotline {
  white-space: nowrap;
  font-weight: 700;
  color: var(--accent);
  font-size: 15px;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: var(--white);
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 700;
  transition: background 0.2s;
}

.btn-cta:hover {
  background: var(--primary-dark);
}

.hamburger {
  display: none;
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--text-dark);
  cursor: pointer;
}

/* Mobile Nav */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav {
  position: absolute;
  top: 0;
  left: -300px;
  width: 280px;
  height: 100%;
  background: var(--white);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: left 0.3s;
}

.mobile-nav-overlay.active .mobile-nav {
  left: 0;
}

.mobile-nav-header {
  display: flex;
        position: relative;
        z-index: 10000;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.mobile-close {
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--text-dark);
  cursor: pointer;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mobile-nav a {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
}

.mobile-nav a.active {
  color: var(--accent);
}

.btn-cta-mobile {
  margin-top: 32px;
  text-align: center;
  background: var(--accent);
  color: var(--white);
  padding: 12px;
  border-radius: var(--radius);
  font-weight: 700;
  display: block;
}

/* 3. Reading Progress Bar */
.reading-progress {
  position: fixed;
  top: 72px;
  left: 0;
  height: 3px;
  background: var(--accent);
  z-index: 99;
  width: 0%;
  transition: width 0.1s;
}

/* 4. Breadcrumb */
.breadcrumb-bar {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.breadcrumb-bar .container {
  padding: 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-gray);
  flex-wrap: nowrap;
  white-space: nowrap;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
  padding: 0 20px;
}

.breadcrumb::-webkit-scrollbar {
  display: none;
}

.breadcrumb a {
  color: var(--text-gray);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb span {
  color: var(--text-dark);
  font-weight: 500;
}

.breadcrumb i {
  font-size: 10px;
}

/* 5. Main Layout (CSS Grid 8/12 - 4/12) */
.main-layout {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 40px;
  padding-top: 40px;
  padding-bottom: 24px;
}

/* 6. Article */
.article-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 7. Article Header */
.article-cat {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent);
  letter-spacing: 1.5px;
  display: inline-block;
  margin-bottom: 8px;
}

.article-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  color: var(--text-gray);
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-intro {
  font-size: 17px;
  color: var(--text-dark);
  line-height: 1.75;
  font-weight: 500;
}

/* 8. Featured Image */
.featured-image-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 12px;
}

.featured-img {
  width: 100%;
  border-radius: var(--radius);
  display: block;
}

.img-watermark {
  position: absolute;
  bottom: 20px;
  right: 24px;
  color: rgba(255, 255, 255, 0.9);
  font-style: italic;
  font-weight: 700;
  font-size: 18px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.img-caption {
  font-size: 13px;
  color: var(--text-gray);
  text-align: center;
  margin-top: 8px;
  font-style: italic;
}

/* 9. TOC */
.toc-box {
  background: #eff6ff;
  border-radius: var(--radius);
  padding: 24px 28px;
}

.toc-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
}

.toc-header i {
  color: var(--primary);
}

.toc-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 24px;
  padding-left: 0;
}

.toc-list li {
  font-size: 15px;
}

.toc-list a {
  color: var(--text-dark);
  transition: color 0.2s;
  font-weight: 500;
  display: block;
}

.toc-list a:hover {
  color: var(--accent);
}

.article-section {
  margin-bottom: 16px;
}

/* 10. Section heading with numbered circle */
.section-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
  margin-top: 0px;
}

.section-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--primary-dark);
  color: var(--white);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

/* 11. Paragraphs in article */
.article-section p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dark);
  margin-bottom: 16px;
}

/* 12. Article inline images */
.article-img-wrap {
  position: relative;
  margin: 24px 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.article-img-wrap img {
  width: 100%;
  display: block;
}

.article-img-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.55);
  color: var(--white);
  font-size: 20px;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 4px;
}

/* 13. Checklist */
.check-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 16px 0;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
  line-height: 1.6;
}

.check-list i {
  color: var(--success);
  margin-top: 4px;
  flex-shrink: 0;
  font-size: 16px;
}

.check-list-spaced {
  gap: 16px;
}

/* 14. Comparison Table */
.comparison-table {
  border-radius: var(--radius);
  overflow: hidden;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-bottom: none;
}

.ct-row {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.ct-header {
  background: #e0f2fe;
  color: var(--text-dark);
}

.ct-row:not(.ct-header):nth-child(even) {
  background: var(--white);
}

.ct-row:not(.ct-header):nth-child(odd) {
  background: #f9fafb;
}

.ct-cell {
  flex: 1;
  padding: 16px 20px;
  font-size: 15px;
  display: flex;
  align-items: center;
}

.ct-label {
  font-weight: 600;
  color: var(--text-dark);
  flex: 0 0 200px;
}

/* 15. Info Box */
.info-box {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin: 20px 0;
}

.info-box-label {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.info-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  line-height: 1.6;
}

.info-list i {
  color: var(--primary);
  margin-top: 4px;
  flex-shrink: 0;
}

/* 16. Highlight Box */
.highlight-box {
  background: #fff7ed;
  border: 1px solid #ffedd5;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin: 20px 0;
}

.highlight-box-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.highlight-box-header i {
  color: var(--accent);
  font-size: 22px;
}

.highlight-box-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
}

.highlight-box p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.highlight-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.highlight-link:hover {
  text-decoration: underline;
}

/* 17. FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  margin-top: 16px;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  transition: color 0.2s;
  list-style: none;
  padding-right: 8px;
}

.faq-q::-webkit-details-marker {
  display: none;
}

.faq-q:hover {
  color: var(--accent);
}

.faq-q i {
  color: var(--text-gray);
  transition: transform 0.3s;
}

.faq-item[open] .faq-q i {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-a {
  padding-top: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-gray);
  padding-right: 24px;
}

/* 20. Sidebar */
.sidebar {
  position: sticky;
  top: 32px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-self: start;
}

/* 21. FitMatch Sidebar Widget */
.sidebar-fitmatch {
  position: relative;
  background: #f9fafb;
  /* bg-gray-50 */
  border-radius: 12px;
  /* rounded-xl */
  box-shadow: 0 4px 12px -2px rgba(0, 0, 0, 0.05);
  /* Softer professional shadow */
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  overflow: hidden;
  min-height: 340px;
  /* Base height to prevent squishing */
}

.fitmatch-content {
  position: relative;
  width: 58%;
  /* Constrain content width */
  z-index: 3;
  display: flex;
  flex-direction: column;
  padding: 24px 8px 100px 24px;
  /* Space for the handwriting decoration at bottom */
}

.fitmatch-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 24px;
}

.fitmatch-title-crb {
  font-weight: 800;
  color: #111827;
}

.fitmatch-title-fm {
  font-weight: 800;
  color: var(--primary-dark);
}

.ai-badge {
  background: var(--primary-dark);
  color: var(--white);
  font-size: 11px;
  font-weight: 800;
  padding: 4px 6px;
  border-radius: 6px;
  line-height: 1;
  transform: translateY(-2px);
  /* Optical alignment */
}

.fitmatch-sub {
  font-size: 15px;
  color: #4b5563;
  line-height: 1.5;
  margin: 12px 0 16px 0;
}

.fitmatch-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0 0 24px 0;
}

.fitmatch-steps li {
  display: flex;
  align-items: flex-start;
  /* Ensure icon aligns with first line of wrapped text */
  gap: 10px;
  font-size: 13.5px;
  color: #374151;
  font-weight: 500;
  line-height: 1.4;
}

.fitmatch-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: var(--primary-dark);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 1px;
  /* Optical alignment */
}

.fitmatch-icon i {
  color: var(--white);
  font-size: 10px;
}

.fitmatch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: fit-content;
  padding: 10px 16px;
  font-size: 12.5px;
  font-weight: 700;
  border-radius: 8px;
  z-index: 10;
}

/* Image container and gradients */
.fitmatch-img-wrapper {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 42%;
  z-index: 1;
}

.fitmatch-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left center;
}

/* Smooth fade out to blend image left edge with background */
.fitmatch-img-wrapper::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 50px;
  background: linear-gradient(to right, #f9fafb 0%, rgba(249, 250, 251, 0) 100%);
  z-index: 2;
  pointer-events: none;
}

/* Smooth fade out at the bottom to ensure handwriting text is readable */
.fitmatch-img-wrapper::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 100px;
  background: linear-gradient(to top, #f9fafb 20%, rgba(249, 250, 251, 0) 100%);
  z-index: 2;
  pointer-events: none;
}

/* Decoration */
.fitmatch-decoration {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: rotate(-6deg);
  z-index: 4;
  pointer-events: none;
  /* Let clicks pass through */
}

.decor-sparks {
  width: 20px;
  height: 20px;
  margin-bottom: -6px;
  margin-left: 24px;
}

.decor-text {
  font-family: 'Be Vietnam Pro', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-dark);
  text-align: center;
  line-height: 1.1;
  text-shadow: 1px 1px 0 #f9fafb, -1px -1px 0 #f9fafb, 1px -1px 0 #f9fafb, -1px 1px 0 #f9fafb;
  /* Extra readability outline */
}

.decor-underline {
  width: 90px;
  height: 12px;
  margin-top: 4px;
}

/* 22. Popular sidebar Widget */
.sidebar-popular {
  display: flex;
  flex-direction: column;
}

.sidebar-heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.sidebar-heading-row h3 {
  font-size: 18px;
  font-weight: 700;
}

.sidebar-heading-row a {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
}

.popular-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.popular-list li {
  display: flex;
  align-items: center;
  gap: 16px;
}

.pop-num {
  font-size: 28px;
  font-weight: 300;
  color: var(--text-gray);
  opacity: 0.4;
  line-height: 1;
  flex-shrink: 0;
  width: 32px;
  text-align: center;
}

.pop-thumb {
  width: 72px;
  height: 72px;
  border-radius: var(--radius);
  object-fit: cover;
  aspect-ratio: 1/1;
  flex-shrink: 0;
}

.popular-list a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  line-height: 1.4;
  flex: 1;
}

.popular-list a:hover {
  color: var(--accent);
}

/* 23. Upload sidebar Widget */
.sidebar-upload {
  padding: 32px 24px;
  background: var(--white);
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: center;
  align-items: center;
}

.upload-icon {
  font-size: 32px;
  color: var(--text-gray);
  margin-bottom: 4px;
}

.sidebar-upload h3 {
  font-size: 18px;
  font-weight: 700;
}

.sidebar-upload p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.5;
  margin-bottom: 8px;
}

/* 24. Bottom Section (CTA Banner & Related) */
.bottom-section {
  padding-bottom: 40px;
}

.article-cta-banner {
  background: #f3f4f6;
  border-radius: var(--radius);
  padding: 40px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}

.cta-banner-left {
  display: flex;
  align-items: center;
  gap: 40px;
  flex: 1;
}

.cta-banner-left h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.3;
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: var(--white);
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 15px;
  transition: background 0.2s;
  white-space: nowrap;
}

.btn-accent:hover {
  background: var(--accent-hover);
}

.cta-banner-right {
  flex: 0 0 320px;
  display: flex;
  align-items: center;
}

.cta-banner-right img {
  width: 100%;
  border-radius: var(--radius);
  display: block;
}

/* 25. Related Articles */
.related-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.related-header h3 {
  font-size: 24px;
  font-weight: 700;
}

.view-all-link {
  color: var(--accent);
  font-size: 15px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.related-card img {
  width: 100%;
  border-radius: var(--radius);
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
}

.related-info h4 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-dark);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s;
  cursor: pointer;
}

.related-info h4:hover {
  color: var(--accent);
}

.related-info span {
  font-size: 13px;
  color: var(--text-gray);
  display: flex;
  align-items: center;
  gap: 6px;
}



/* 27. Back to top */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  background: var(--primary);
  color: var(--white);
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 99;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--accent);
  transform: translateY(-3px);
}

/* 28. Responsive */
@media (max-width: 1024px) {
  .nav-menu {
    display: none;
  }

  .hamburger {
    display: block;
  }

  .search-box,
  .hotline,
  .btn-cta {
    display: none;
  }

  .main-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
  }

  .sidebar-popular {
    grid-column: 1 / -1;
  }

  .article-title {
    font-size: 28px;
  }

  .related-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .article-cta-banner {
    flex-direction: column;
    text-align: center;
    padding: 32px;
  }

  .cta-banner-left {
    flex-direction: column;
    gap: 24px;
  }

  .highlight-box {
    padding: 16px 20px;
  }
}

@media (max-width: 768px) {
  .article-title {
    font-size: 24px;
  }

  .section-heading {
    font-size: 20px;
  }

  .toc-list {
    grid-template-columns: 1fr;
  }

  .ct-label {
    flex: 0 0 120px;
  }

  .ct-cell {
    padding: 12px;
    font-size: 14px;
  }

  .comparison-table {
    overflow-x: auto;
    display: block;
  }

  .ct-row {
    min-width: 650px;
    display: flex;
  }

  .sidebar {
    grid-template-columns: 1fr;
  }

  .related-list {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}
/* --- REFACTOR BASED ON USER REQUIREMENTS --- */
.container.layout-70-30 {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 70% calc(30% - 32px);
  gap: 32px;
}
@media (max-width: 991px) {
  .container.layout-70-30 {
    grid-template-columns: 1fr;
  }
}

.article-section {
  margin-bottom: 48px !important;
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: #1abc9c;
  color: white;
  border-radius: 50%;
  font-size: 16px;
  font-weight: bold;
}

.sticky-sidebar {
  position: sticky !important;
  top: 32px !important;
  align-self: start;
}

.related-grid.grid-3-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-grid.grid-3-col img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  width: 100%;
}
@media (max-width: 768px) {
  .related-grid.grid-3-col {
    grid-template-columns: 1fr;
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 2fr;
  gap: 24px;
  margin-top: 0;
}
@media (max-width: 991px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}
/* --- CSS ĐỂ LÀM TOÀN BỘ BOX CLICK ĐƯỢC (THẺ A FULL BOX) --- */
.product-card, .article-card, .featured-post {
  position: relative;
}
.product-card a::after, .article-card a::after, .featured-post a::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 10;
}

/* Contact links hover state */
.contact-link:hover {
  text-decoration: underline !important;
  opacity: 0.8;
}
/* ============================================================== */
/* STANDARDIZED HEADER & MOBILE MENU CSS (ADDED BY AI)            */
/* ============================================================== */

/* DESKTOP LAYOUT (Default) */






.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 16px;
}



.mobile-menu-btn {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #0d3b45;
}

.mobile-only {
    display: none;
}

.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.5);
    z-index: 9998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.menu-overlay.menu-active {
    display: block;
    opacity: 1;
}

/* MOBILE LAYOUT */
@media (max-width: 1024px) {


    /* Hide desktop actions */


    /* Show mobile menu button */
    .mobile-menu-btn {
        display: block;
        position: relative;
        z-index: 9999;
    }

    /* Standardize mobile Sidebar Menu */
    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 280px;
        display: flex;
        height: 100vh;
        background: #fff;
        z-index: 9999;
        flex-direction: column;
        align-items: flex-start;
        padding: 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        box-shadow: 2px 0 8px rgba(0,0,0,0.1);
        overflow-y: auto;
    }

    /* Active state for Sidebar */
    .main-nav.menu-active {
        transform: translateX(0);
    }

    .mobile-only {
        display: flex !important;
    }

    .nav-list {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }

    .nav-list li {
        width: 100%;
        border-bottom: 1px solid #eee;
    }

    .nav-list .nav-item {
        display: block;
        padding: 16px 20px;
        width: 100%;
    }

    .mobile-nav-header {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 16px 20px;
        border-bottom: 1px solid #eee;
    }

    .mobile-nav-logo {
        height: 40px;
    }

    .mobile-nav-close {
        background: none;
        border: none;
        font-size: 24px;
        cursor: pointer;
        color: #333;
    }

    .mobile-nav-footer {
        flex-direction: column;
        width: 100%;
        padding: 20px;
        gap: 12px;
        margin-top: auto;
    }

    .btn-mobile-consult {
        display: block;
        text-align: center;
        background: #ff6a00;
        color: #fff;
        padding: 12px;
        border-radius: 8px;
        text-decoration: none;
        font-weight: bold;
    }
    
    .mobile-hotline {
        display: block;
        text-align: center;
        color: #0d3b45;
        text-decoration: none;
        font-weight: bold;
        font-size: 16px;
    }
}

/* DESKTOP ACTIONS STANDARDIZATION (ADDED BY AI) */

.search-box {
    display: flex;
    align-items: center;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 4px 10px;
    background: #f9f9f9;
}
.search-box input {
    border: none;
    outline: none;
    background: transparent;
    padding: 5px;
    font-size: 14px;
    width: 150px;
}
.search-box button {
    background: none;
    border: none;
    cursor: pointer;
    color: #666;
}
.btn-try-fit {
    background-color: #ff6a00;
    color: #fff;
    padding: 9px 18px;
    border-radius: 4px;
    font-weight: 700;
    font-size: 13px;
    text-decoration: none;
    transition: background 0.2s;
    white-space: nowrap;
}
.btn-try-fit:hover {
    background-color: #e65c00;
}
.hotline {
    white-space: nowrap;
    font-weight: 700;
    color: #333;
    font-size: 14px;
}
.hotline a {
    color: inherit;
    text-decoration: none;
}
.nav-item:hover, .nav-item.active {
    color: #ff6a00;
}