/* roulang page: index */
:root {
  --color-brand: #0F766E;
  --color-brand-dark: #134E4A;
  --color-brand-light: #D1FAE5;
  --color-accent: #F59E0B;
  --color-accent-dark: #D97706;
  --color-bg: #F8FAF9;
  --color-white: #ffffff;
  --color-text: #1B2A29;
  --color-text-light: #5B6B6A;
  --color-border: #E4E9E8;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.10);
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --spacing-section: 80px;
  --spacing-section-mobile: 48px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { text-decoration: none; color: inherit; transition: color .2s ease; }

button { font-family: inherit; cursor: pointer; border: none; background: none; }

input { font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header/Nav ===== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
  height: 68px;
  display: flex;
  align-items: center;
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--color-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -0.5px;
}

.logo-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text);
  white-space: nowrap;
}

.logo-text span { color: var(--color-brand); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-light);
  transition: all .2s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-brand);
  background: var(--color-brand-lighter);
}

.nav-link.active {
  color: var(--color-brand);
  background: var(--color-brand-light);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box input {
  width: 180px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: 0 40px 0 16px;
  font-size: 14px;
  color: var(--color-text);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

.search-box input:focus {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
  background: #fff;
}

.search-box i {
  position: absolute;
  right: 14px;
  color: var(--color-text-light);
  font-size: 14px;
  pointer-events: none;
}

.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  font-size: 20px;
  border: 1px solid var(--color-border);
  background: #fff;
  transition: background .2s;
}

.mobile-toggle:hover { background: var(--color-bg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 40;
  padding: 32px 24px;
  overflow-y: auto;
  flex-direction: column;
  gap: 8px;
}

.mobile-menu.open { display: flex; }

.mobile-menu .nav-link {
  font-size: 18px;
  padding: 14px 20px;
  border-radius: 12px;
  border-bottom: 1px solid rgba(228,233,232,0.5);
}

.mobile-menu .search-box { margin-bottom: 20px; }
.mobile-menu .search-box input { width: 100%; height: 48px; font-size: 15px; }
.mobile-menu .mobile-cta { margin-top: 12px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 12px 28px;
  font-weight: 600;
  font-size: 15px;
  min-height: 46px;
  cursor: pointer;
  transition: all .25s ease;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.25);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.32);
}

.btn-primary:active {
  background: #B45309;
  transform: translateY(0);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-brand-dark);
  outline-offset: 3px;
}

.btn-outline {
  background: #fff;
  color: var(--color-brand);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  background: var(--color-brand-lighter);
  border-color: var(--color-brand);
  color: var(--color-brand);
}

.btn-outline:active {
  background: var(--color-brand-light);
  transform: translateY(0);
}

.btn-outline:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 3px;
}

.btn-lg { padding: 16px 40px; font-size: 16px; min-height: 54px; }

.btn-sm { padding: 8px 20px; font-size: 14px; min-height: 38px; }

/* ===== Hero ===== */
.hero {
  min-height: 90vh;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.75) 40%, rgba(255,255,255,0.2) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 560px;
  padding: 60px 0;
}

.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.hero h1 .highlight { color: var(--color-brand); }

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-light);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--color-text-light);
  box-shadow: var(--shadow-sm);
}

.hero-tag i { color: var(--color-brand); }

/* ===== Section ===== */
.section { padding: var(--spacing-section) 0; }

.section-alt { background: #fff; }

.section-head {
  margin-bottom: 40px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  letter-spacing: -0.5px;
}

.section-head .sub {
  color: var(--color-text-light);
  font-size: 15px;
  margin-top: 6px;
}

.section-link {
  color: var(--color-brand);
  font-weight: 500;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .2s;
}

.section-link:hover { gap: 10px; }

/* ===== Cards (vert video style) ===== */
.video-card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.video-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  position: relative;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(15, 118, 110, 0.2);
}

.video-card-cover {
  aspect-ratio: 3/4;
  overflow: hidden;
  background: #eee;
  position: relative;
}

.video-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.video-card:hover .video-card-cover img { transform: scale(1.05); }

.video-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(19, 78, 74, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .3s ease;
}

.video-card:hover .video-card-overlay { opacity: 1; }

.video-card-overlay .btn {
  background: #fff;
  color: var(--color-brand);
  font-size: 13px;
  padding: 10px 20px;
  min-height: 40px;
}

.video-card-time {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 12px;
  border-radius: 6px;
  padding: 3px 8px;
  font-family: ui-monospace, "SF Mono", monospace;
}

.video-card-hot {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(255,255,255,0.9);
  color: var(--color-accent-dark);
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  padding: 4px 10px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.video-card-body {
  padding: 16px;
}

.video-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card-body .meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 13px;
  color: var(--color-text-light);
}

/* ===== List section ===== */
.list-wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

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

.list-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: all .25s ease;
}

.list-item:hover {
  background: var(--color-brand-lighter);
  border-color: rgba(15, 118, 110, 0.3);
  transform: translateX(4px);
}

.list-num {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--color-brand-light);
  color: var(--color-brand);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.list-item-info h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.list-item-info p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-top: 2px;
}

.list-arrow {
  margin-left: auto;
  color: var(--color-border);
  font-size: 14px;
  transition: all .25s ease;
}

.list-item:hover .list-arrow {
  color: var(--color-brand);
  transform: translateX(4px);
}

.list-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
  aspect-ratio: 4/3;
}

.list-image img { width: 100%; height: 100%; object-fit: cover; }

.list-image-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(255,255,255,0.92);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--color-brand);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* ===== Reviews ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 28px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all .25s ease;
}

.review-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.review-card .quote-icon {
  font-size: 40px;
  color: var(--color-brand-light);
  line-height: 1;
  margin-bottom: 12px;
}

.review-stars {
  color: var(--color-accent);
  font-size: 15px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.review-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.review-author {
  font-size: 13px;
  color: var(--color-text);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.review-author::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-brand);
}

/* ===== News/CMS ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}

.news-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: rgba(15, 118, 110, 0.2);
}

.news-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.tag {
  display: inline-block;
  background: var(--color-brand-lighter);
  color: var(--color-brand);
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  padding: 4px 12px;
}

.news-date {
  font-size: 12px;
  color: var(--color-text-light);
  font-family: ui-monospace, "SF Mono", monospace;
}

.news-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-excerpt {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.read-more {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-brand);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .2s ease;
}

.read-more:hover { gap: 10px; }

.empty-state {
  grid-column: 1 / -1;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--color-border);
  padding: 48px 24px;
  text-align: center;
  color: var(--color-text-light);
  font-size: 15px;
}

.empty-state i {
  display: block;
  font-size: 40px;
  color: var(--color-border);
  margin-bottom: 12px;
}

/* ===== CTA Section ===== */
.cta-section {
  background: var(--color-brand-dark);
  border-radius: 24px;
  padding: 64px 48px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(15, 118, 110, 0.3);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -60%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.15);
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  color: #fff;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
}

.cta-content p {
  color: rgba(255,255,255,0.8);
  font-size: 16px;
  margin-bottom: 32px;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all .25s ease;
}

.faq-item.active {
  border-color: rgba(15, 118, 110, 0.3);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  min-height: 60px;
  user-select: none;
}

.faq-question h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.faq-question .icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-brand-lighter);
  color: var(--color-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: transform .3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-question .icon { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-brand-dark);
  color: rgba(255,255,255,0.8);
  padding: 64px 0 0;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo-text { color: #fff; }
.footer-brand .logo-text span { color: #F59E0B; }
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-top: 12px;
  line-height: 1.7;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  transition: color .2s;
}

.footer-col ul li a:hover { color: #F59E0B; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

.footer-bottom span { display: inline-block; margin: 0 8px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .video-card-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .list-wrap { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}

@media (max-width: 768px) {
  .section { padding: var(--spacing-section-mobile) 0; }
  .main-nav { display: none; }
  .header-actions .search-box { display: none; }
  .mobile-toggle { display: flex; }
  .hero { min-height: 85vh; }
  .hero h1 { font-size: 34px; }
  .hero-content { max-width: 100%; padding: 40px 0; }
  .hero-subtitle { font-size: 16px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .review-grid { grid-template-columns: 1fr; }
  .video-card-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .section-head h2 { font-size: 26px; }
  .cta-section { padding: 40px 24px; border-radius: 16px; }
  .cta-content h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .site-footer { margin-top: 48px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .logo-text { font-size: 16px; }
  .logo-icon { width: 34px; height: 34px; font-size: 13px; }
  .header-actions .btn { padding: 8px 16px; min-height: 38px; font-size: 13px; }
  .hero-tags { gap: 6px; }
  .hero-tag { padding: 5px 10px; font-size: 12px; }
  .list-item { padding: 12px 14px; }
  .list-item-info h4 { font-size: 15px; }
  .faq-question { padding: 16px 18px; }
  .faq-question h3 { font-size: 15px; }
  .faq-answer { padding: 0 18px; }
  .faq-item.active .faq-answer { padding-bottom: 16px; }
}

/* roulang page: category1 */
:root {
            --primary: #0F766E;
            --primary-dark: #115E59;
            --primary-light: #CCFBF1;
            --accent: #F59E0B;
            --accent-hover: #D97706;
            --bg: #F8FAF9;
            --text: #1B2A29;
            --text-light: #5B6B6A;
            --border: #E4E9E8;
            --footer-bg: #134E4A;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 32px rgba(15, 118, 110, 0.13);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

        img {
            max-width: 100%;
            display: block;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: 68px;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            letter-spacing: 0.5px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.2px;
            line-height: 1.2;
        }

        .logo-text span {
            color: var(--primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: all 0.2s ease;
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: #F1F5F4;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 7px 16px;
            gap: 8px;
            width: 200px;
            transition: all 0.25s ease;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
            background: #fff;
        }

        .search-box input {
            width: 100%;
            font-size: 14px;
            color: var(--text);
            background: transparent;
        }

        .search-box input::placeholder {
            color: #9AA8A6;
        }

        .search-box i {
            color: #8A9A98;
            font-size: 13px;
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg);
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .menu-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all 0.25s ease;
            white-space: nowrap;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(217, 119, 6, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            background: #B45309;
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--text);
            outline-offset: 3px;
        }

        .btn-secondary {
            background: #fff;
            border: 1.5px solid var(--border);
            color: var(--primary);
        }

        .btn-secondary:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 15px 40px;
            font-size: 16px;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, #F0FDFA 0%, #F8FAF9 55%, #FEF3C7 100%);
            padding: 72px 0 64px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 360px;
            height: 360px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
            position: relative;
            z-index: 1;
        }

        .page-hero-content {
            max-width: 640px;
        }

        .page-tag {
            display: inline-block;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            padding: 5px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .page-hero h1 {
            font-size: 40px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .page-hero h1 span {
            color: var(--primary);
        }

        .page-hero p {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .page-hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .page-hero-stats {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 32px;
        }

        .stat-chip {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .stat-chip i {
            color: var(--accent);
        }

        .stat-chip .num {
            color: var(--primary);
            font-weight: 800;
            font-size: 15px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }

        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }

        .section-head .section-tag {
            display: inline-block;
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #D4E8E4;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.75;
        }

        /* ===== Content Cards ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .content-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .content-card-img {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

        .content-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .content-card:hover .content-card-img img {
            transform: scale(1.04);
        }

        .content-card-img .img-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .content-card-img .img-overlay {
            position: absolute;
            inset: 0;
            background: rgba(15, 118, 110, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .content-card:hover .img-overlay {
            opacity: 1;
        }

        .content-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .content-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .content-card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: #8A9A98;
            border-top: 1px solid #F0F4F3;
            padding-top: 14px;
            margin-top: auto;
        }

        .card-meta .read-more {
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap 0.25s ease;
        }

        .card-meta .read-more:hover {
            gap: 9px;
        }

        /* ===== Timeline ===== */
        .timeline-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .timeline {
            position: relative;
            max-width: 700px;
            margin: 0 auto;
            padding: 10px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 28px;
            top: 20px;
            bottom: 20px;
            width: 3px;
            background: linear-gradient(180deg, var(--primary-light), var(--primary));
            border-radius: 3px;
        }

        .timeline-item {
            position: relative;
            padding: 20px 0 20px 76px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 30px;
            width: 16px;
            height: 16px;
            background: #fff;
            border: 3px solid var(--primary);
            border-radius: 50%;
            box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.1);
            z-index: 1;
        }

        .timeline-item:nth-child(2)::before {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
        }

        .timeline-item:nth-child(3)::before {
            border-color: var(--primary);
        }

        .timeline-date {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 12px;
            border-radius: 999px;
            margin-bottom: 8px;
        }

        .timeline-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .timeline-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.75;
        }

        /* ===== Testimonials ===== */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            position: relative;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
        }

        .quote-icon {
            font-size: 26px;
            color: var(--primary-light);
            margin-bottom: 10px;
        }

        .stars {
            display: flex;
            gap: 4px;
            color: var(--accent);
            font-size: 14px;
            margin-bottom: 14px;
        }

        .testimonial-card p {
            font-size: 15px;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            border-top: 1px solid #F0F4F3;
            padding-top: 14px;
        }

        .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            font-weight: 700;
        }

        .author-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }

        .author-role {
            font-size: 12px;
            color: #8A9A98;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: var(--primary);
            border-radius: 24px;
            padding: 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(15, 118, 110, 0.25);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -30px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -20px;
            width: 160px;
            height: 160px;
            background: rgba(245, 158, 11, 0.2);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .cta-box .btn {
            position: relative;
            z-index: 1;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-item.active {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            gap: 16px;
            user-select: none;
            min-height: 60px;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 13px;
            transition: transform 0.35s ease, background 0.3s ease;
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease, opacity 0.4s ease;
            opacity: 0;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 22px;
            opacity: 1;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.85;
            border-top: 1px solid #F0F4F3;
            padding-top: 14px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand .logo-text span {
            color: #FBBF24;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.65);
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

        .footer-col ul li a:hover {
            color: #FBBF24;
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 12px;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            text-align: center;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
                align-items: stretch;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                padding: 14px 20px;
                font-size: 16px;
            }

            .header-actions {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .page-hero {
                padding: 48px 0 40px;
            }

            .page-hero-inner {
                flex-direction: column;
                gap: 24px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .page-hero p {
                font-size: 16px;
            }

            .page-hero-btns {
                flex-direction: column;
                width: 100%;
            }

            .page-hero-btns .btn {
                width: 100%;
            }

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

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

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

            .cta-box {
                padding: 40px 24px;
                border-radius: 18px;
            }

            .cta-box h2 {
                font-size: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }

            .timeline::before {
                left: 22px;
            }

            .timeline-item {
                padding-left: 64px;
            }

            .timeline-item::before {
                left: 15px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .site-header {
                height: 60px;
            }

            .header-inner {
                height: 60px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 12px;
            }

            .logo-text {
                font-size: 17px;
            }

            .page-hero h1 {
                font-size: 26px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .feature-card {
                padding: 24px 20px;
            }

            .content-card-img {
                height: 180px;
            }

            .cta-box {
                padding: 32px 20px;
            }

            .cta-box h2 {
                font-size: 22px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0F766E;
            --primary-dark: #134E4A;
            --primary-light: #CCFBF1;
            --accent: #F59E0B;
            --accent-hover: #D97706;
            --bg: #F8FAF9;
            --text-strong: #1B2A29;
            --text-body: #3E4E4D;
            --text-muted: #5B6B6A;
            --border: #E4E9E8;
            --white: #FFFFFF;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 8px rgba(15, 118, 110, 0.06);
            --shadow-hover: 0 8px 30px rgba(15, 118, 110, 0.12);
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            height: 72px;
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0.5px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .logo-text span {
            color: var(--primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }

        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            padding: 8px 16px;
            width: 200px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
            background: #fff;
        }

        .search-box i {
            color: var(--text-muted);
            font-size: 14px;
        }

        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-strong);
            width: 100%;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text-strong);
            font-size: 18px;
            align-items: center;
            justify-content: center;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 24px;
            border: none;
            transition: var(--transition);
            line-height: 1.4;
            min-height: 44px;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(245, 158, 11, 0.3);
        }

        .btn-primary:active {
            background: #B45309;
            transform: translateY(0);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .btn-large {
            padding: 14px 36px;
            font-size: 17px;
        }

        .btn-small {
            padding: 8px 20px;
            font-size: 14px;
            min-height: 40px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: #F1F5F4;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

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

        .breadcrumb .sep {
            color: #B0BCBA;
        }

        .breadcrumb .current {
            color: var(--text-strong);
            font-weight: 500;
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== 文章区 ===== */
        .article-layout {
            max-width: 860px;
            margin: 0 auto;
            padding: 48px 24px 24px;
        }

        .article-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 48px 56px;
            box-shadow: var(--shadow-sm);
        }

        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }

        .article-header h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-strong);
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta i {
            color: var(--primary);
            font-size: 13px;
        }

        .article-body {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-body);
        }

        .article-body p {
            margin-bottom: 1.6em;
        }

        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-strong);
            margin: 1.8em 0 0.8em;
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-strong);
            margin: 1.6em 0 0.6em;
            line-height: 1.4;
        }

        .article-body img {
            border-radius: 12px;
            border: 1px solid var(--border);
            margin: 24px 0;
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            font-style: normal;
            color: var(--text-strong);
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.6em 1.4em;
        }

        .article-body li {
            margin-bottom: 0.5em;
        }

        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid rgba(15, 118, 110, 0.3);
        }

        .article-body a:hover {
            color: var(--accent-hover);
            border-bottom-color: var(--accent-hover);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .empty-state {
            text-align: center;
            padding: 60px 0;
        }

        .empty-state i {
            font-size: 48px;
            color: #C0D5D2;
            margin-bottom: 16px;
        }

        .empty-state p {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .article-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
            gap: 12px;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            padding: 8px 16px;
            border-radius: var(--radius-full);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .back-link:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

        .back-link i {
            font-size: 13px;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 64px 0 48px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-head {
            margin-bottom: 32px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: -0.5px;
        }

        .section-head p {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(15, 118, 110, 0.25);
        }

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

        .related-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .related-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-strong);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 52px;
        }

        .related-card h3:hover {
            color: var(--primary);
        }

        .related-card .date {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: auto;
        }

        /* ===== CTA ===== */
        .article-cta {
            background: var(--primary-dark);
            padding: 56px 0;
            text-align: center;
            margin-top: 24px;
        }

        .article-cta h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .article-cta p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 15px;
            margin-bottom: 28px;
        }

        .article-cta .btn-primary {
            background: var(--accent);
            font-size: 17px;
            padding: 14px 36px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 64px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand .logo-icon {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand .logo-text span {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .search-box {
                width: 150px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 64px;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 24px;
                gap: 12px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                z-index: 100;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                width: 100%;
                text-align: center;
                font-size: 17px;
                padding: 14px;
            }

            .menu-toggle {
                display: flex;
            }

            .header-actions .search-box {
                display: none;
            }

            .header-actions .btn-small {
                padding: 8px 14px;
                font-size: 13px;
            }

            .container {
                padding: 0 20px;
            }

            .article-layout {
                padding: 24px 16px 16px;
            }

            .article-card {
                padding: 32px 24px;
                border-radius: 12px;
            }

            .article-header h1 {
                font-size: 28px;
            }

            .article-body {
                font-size: 16px;
                line-height: 1.85;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .related-card img {
                height: 160px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .article-cta {
                padding: 48px 24px;
            }

            .article-cta h2 {
                font-size: 24px;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 12px;
            }

            .header-actions .btn-small {
                display: none;
            }

            .article-card {
                padding: 24px 18px;
            }

            .article-header h1 {
                font-size: 24px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }

            .breadcrumb .current {
                max-width: 180px;
            }
        }

/* roulang page: category2 */
:root {
      --primary: #0F766E;
      --primary-dark: #115E59;
      --primary-light: #D1FAF5;
      --accent: #F59E0B;
      --accent-hover: #D97706;
      --accent-active: #B45309;
      --bg: #F8FAF9;
      --text-dark: #1B2A29;
      --text-light: #5B6B6A;
      --border: #E4E9E8;
      --footer-bg: #134E4A;
      --radius: 16px;
      --radius-sm: 12px;
      --shadow-sm: 0 2px 8px rgba(19, 78, 74, 0.06);
      --shadow-md: 0 6px 20px rgba(19, 78, 74, 0.10);
      --shadow-lg: 0 12px 36px rgba(19, 78, 74, 0.16);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      background: var(--bg);
      color: var(--text-dark);
      line-height: 1.78;
      -webkit-font-smoothing: antialiased;
    }

    body.no-scroll {
      overflow: hidden;
    }

    img {
      max-width: 100%;
      display: block;
    }

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

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }

    input {
      font-family: inherit;
      outline: none;
    }

    ul,
    ol {
      list-style: none;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .section {
      padding: 80px 0;
    }

    .section-head {
      text-align: center;
      max-width: 640px;
      margin: 0 auto 48px;
    }

    .section-tag {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 12px;
      font-weight: 700;
      padding: 5px 16px;
      border-radius: 999px;
      margin-bottom: 14px;
      letter-spacing: 1px;
    }

    .section-head h2 {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 10px;
      letter-spacing: -0.3px;
    }

    .section-head p {
      font-size: 15px;
      color: var(--text-light);
      line-height: 1.7;
    }

    .section-head p:empty {
      display: none;
    }

    /* ===== Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
      transition: box-shadow 0.3s;
    }

    .site-header.header-scrolled {
      box-shadow: 0 4px 24px rgba(19, 78, 74, 0.08);
    }

    .site-header.header-overlay {
      z-index: 120;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 24px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .logo-icon {
      width: 38px;
      height: 38px;
      background: var(--primary);
      color: #fff;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 13px;
      letter-spacing: 0.5px;
      box-shadow: 0 3px 10px rgba(15, 118, 110, 0.25);
    }

    .logo-text {
      font-size: 19px;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.2;
    }

    .logo-text span {
      color: var(--primary);
    }

    .main-nav {
      display: flex;
      gap: 28px;
    }

    .nav-link {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-light);
      padding: 8px 2px;
      position: relative;
      transition: color 0.3s;
      white-space: nowrap;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 0;
      height: 3px;
      background: var(--primary);
      border-radius: 3px;
      transition: width 0.3s ease;
    }

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

    .nav-link.active {
      color: var(--primary);
    }

    .nav-link.active::after {
      width: 100%;
    }

    .nav-link:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 4px;
      border-radius: 4px;
    }

    .header-right {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-shrink: 0;
    }

    .search-box {
      display: flex;
      align-items: center;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 0 14px;
      height: 40px;
      gap: 8px;
      width: 210px;
      transition: border-color 0.3s, box-shadow 0.3s;
    }

    .search-box i {
      color: var(--text-light);
      font-size: 13px;
      transition: color 0.3s;
    }

    .search-box input {
      border: none;
      background: transparent;
      font-size: 13px;
      color: var(--text-dark);
      width: 100%;
      height: 100%;
    }

    .search-box input::placeholder {
      color: var(--text-light);
      opacity: 0.7;
    }

    .search-box:focus-within {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.10);
    }

    .search-box:focus-within i {
      color: var(--primary);
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: 999px;
      font-weight: 700;
      transition: all 0.3s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      padding: 10px 24px;
      font-size: 14px;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.30);
    }

    .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(245, 158, 11, 0.38);
    }

    .btn-primary:active {
      background: var(--accent-active);
      transform: translateY(0);
      box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
    }

    .btn-primary:focus-visible {
      outline: 2px solid var(--text-dark);
      outline-offset: 3px;
    }

    .btn-outline {
      background: #fff;
      color: var(--primary);
      border: 1px solid var(--border);
      padding: 10px 24px;
      font-size: 14px;
      box-shadow: 0 2px 6px rgba(19, 78, 74, 0.04);
    }

    .btn-outline:hover {
      background: var(--primary-light);
      border-color: var(--primary);
      color: var(--primary-dark);
      transform: translateY(-1px);
    }

    .btn-outline:active {
      transform: translateY(0);
      background: #BFEBE4;
    }

    .btn-outline:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 3px;
    }

    .btn-sm {
      padding: 8px 18px;
      font-size: 13px;
    }

    .btn-lg {
      padding: 14px 36px;
      font-size: 15px;
    }

    .btn-light {
      background: #fff;
      color: var(--primary);
      padding: 10px 24px;
      font-size: 14px;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
    }

    .btn-light:hover {
      background: var(--primary-light);
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.16);
    }

    .btn-light:active {
      transform: translateY(0);
      background: #BFEBE4;
    }

    .btn-light:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 3px;
    }

    /* ===== Menu toggle ===== */
    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 10px;
      border: 1px solid var(--border);
      background: #fff;
      color: var(--text-dark);
      font-size: 18px;
      align-items: center;
      justify-content: center;
      transition: background 0.3s, border-color 0.3s;
      flex-shrink: 0;
    }

    .menu-toggle:hover {
      background: var(--primary-light);
      border-color: var(--primary);
    }

    .menu-toggle:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }

    /* ===== Page header ===== */
    .page-header {
      position: relative;
      background:
        linear-gradient(135deg,
          rgba(255, 255, 255, 0.92) 0%,
          rgba(248, 250, 249, 0.88) 60%,
          rgba(15, 118, 110, 0.06) 100%),
        url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      border-bottom: 1px solid var(--border);
      padding: 56px 0 60px;
      overflow: hidden;
    }

    .page-crumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 16px;
    }

    .page-crumb a {
      transition: color 0.3s;
    }

    .page-crumb a:hover {
      color: var(--primary);
    }

    .page-crumb span {
      color: var(--text-light);
    }

    .page-header h1 {
      font-size: 38px;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.25;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .page-desc {
      font-size: 16px;
      color: var(--text-light);
      max-width: 680px;
      line-height: 1.8;
    }

    /* ===== Guide steps ===== */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .step-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 32px 24px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .step-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      opacity: 0;
      transition: opacity 0.3s;
    }

    .step-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: rgba(15, 118, 110, 0.18);
    }

    .step-card:hover::before {
      opacity: 1;
    }

    .step-num {
      font-size: 34px;
      font-weight: 800;
      color: rgba(15, 118, 110, 0.14);
      display: block;
      margin-bottom: 14px;
      font-family: ui-monospace, "SF Mono", "Cascadia Mono", monospace;
      line-height: 1;
    }

    .step-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-dark);
    }

    .step-card p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.7;
    }

    /* ===== Scene cards ===== */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .scene-card {
      background: #fff;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
      display: flex;
      flex-direction: column;
    }

    .scene-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(15, 118, 110, 0.20);
    }

    .card-cover {
      height: 200px;
      overflow: hidden;
      position: relative;
      background: var(--primary-light);
    }

    .card-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }

    .scene-card:hover .card-cover img {
      transform: scale(1.05);
    }

    .card-cover::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg,
          rgba(19, 78, 74, 0) 55%,
          rgba(19, 78, 74, 0.20) 100%);
      opacity: 0;
      transition: opacity 0.4s;
    }

    .scene-card:hover .card-cover::after {
      opacity: 1;
    }

    .card-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .card-body .tag {
      display: inline-flex;
      align-self: flex-start;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-light);
      border-radius: 999px;
      padding: 4px 12px;
      margin-bottom: 12px;
      letter-spacing: 0.3px;
    }

    .card-body h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-dark);
      line-height: 1.4;
    }

    .card-body p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.7;
      flex: 1;
    }

    /* ===== Stats ===== */
    .data-stats {
      background: linear-gradient(135deg, #0F766E 0%, #134E4A 100%);
      padding: 64px 0;
      position: relative;
      overflow: hidden;
    }

    .data-stats::before {
      content: '';
      position: absolute;
      top: -80px;
      right: -80px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.05);
    }

    .data-stats::after {
      content: '';
      position: absolute;
      bottom: -60px;
      left: -60px;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: rgba(245, 158, 11, 0.08);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 40px;
      text-align: center;
      position: relative;
      z-index: 1;
    }

    .stat-num {
      font-size: 40px;
      font-weight: 800;
      color: #fff;
      display: block;
      line-height: 1.2;
      font-family: ui-monospace, "SF Mono", "Cascadia Mono", monospace;
    }

    .stat-label {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.75);
      display: block;
      margin-top: 6px;
      letter-spacing: 0.5px;
    }

    /* ===== FAQ ===== */
    .faq-list {
      max-width: 760px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 14px;
      overflow: hidden;
      transition: box-shadow 0.3s ease, border-color 0.3s ease;
    }

    .faq-item.open {
      box-shadow: var(--shadow-md);
      border-color: rgba(15, 118, 110, 0.22);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-dark);
      text-align: left;
      min-height: 56px;
      transition: color 0.3s;
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-question:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: -2px;
    }

    .faq-question i {
      transition: transform 0.35s ease, color 0.3s;
      color: var(--text-light);
      flex-shrink: 0;
      font-size: 14px;
    }

    .faq-item.open .faq-question i {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.4s ease;
      padding: 0 24px;
    }

    .faq-item.open .faq-answer {
      max-height: 320px;
      padding-bottom: 20px;
    }

    .faq-answer p {
      font-size: 15px;
      color: var(--text-light);
      line-height: 1.8;
    }

    /* ===== Bottom CTA ===== */
    .bottom-cta {
      background: var(--bg);
      border-top: 1px solid var(--border);
      text-align: center;
      padding: 72px 0;
    }

    .bottom-cta h2 {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 12px;
    }

    .bottom-cta p {
      font-size: 16px;
      color: var(--text-light);
      margin-bottom: 32px;
    }

    .bottom-cta .btn {
      min-width: 160px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--footer-bg);
      color: rgba(255, 255, 255, 0.75);
      padding: 56px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand .logo {
      margin-bottom: 14px;
    }

    .footer-brand .logo-text {
      color: #fff;
    }

    .footer-brand .logo-text span {
      color: #fff;
    }

    .footer-brand .logo-icon {
      background: rgba(255, 255, 255, 0.14);
      color: #fff;
      box-shadow: none;
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.60);
      max-width: 320px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-col li {
      margin-bottom: 10px;
    }

    .footer-col a {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.60);
      transition: color 0.3s;
    }

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

    .footer-col a:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 4px;
      border-radius: 4px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.10);
      padding-top: 20px;
      display: flex;
      justify-content: center;
      gap: 8px;
      flex-wrap: wrap;
      font-size: 12px;
      color: rgba(255, 255, 255, 0.45);
      text-align: center;
    }

    /* ===== Mobile menu ===== */
    .mobile-menu {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: #fff;
      z-index: 100;
      display: flex;
      flex-direction: column;
      padding: 100px 32px 40px;
      transform: translateX(100%);
      transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
      overflow-y: auto;
    }

    .mobile-menu.open {
      transform: translateX(0);
    }

    .mobile-search {
      display: flex;
      align-items: center;
      gap: 12px;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 0 16px;
      height: 48px;
      margin-bottom: 32px;
    }

    .mobile-search i {
      color: var(--text-light);
      font-size: 14px;
    }

    .mobile-search input {
      border: none;
      background: transparent;
      width: 100%;
      font-size: 15px;
      color: var(--text-dark);
      height: 100%;
    }

    .mobile-search input::placeholder {
      color: var(--text-light);
    }

    .mobile-link {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-dark);
      padding: 16px 0;
      border-bottom: 1px solid var(--border);
      transition: color 0.3s, padding-left 0.3s;
    }

    .mobile-link:hover {
      color: var(--primary);
      padding-left: 6px;
    }

    .mobile-link.active {
      color: var(--primary);
    }

    .mobile-link:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 4px;
      border-radius: 6px;
    }

    .mobile-cta {
      margin-top: 32px;
      width: 100%;
      min-height: 48px;
    }

    /* ===== Media Queries ===== */
    @media (max-width: 1024px) {
      .header-inner {
        gap: 16px;
      }

      .main-nav {
        gap: 18px;
      }

      .search-box {
        width: 170px;
      }

      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .cards-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }

      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
    }

    @media (max-width: 768px) {
      .main-nav {
        display: none;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .header-right .search-box {
        display: none;
      }

      .section {
        padding: 48px 0;
      }

      .section-head {
        margin-bottom: 32px;
      }

      .section-head h2 {
        font-size: 26px;
      }

      .page-header {
        padding: 40px 0 44px;
      }

      .page-header h1 {
        font-size: 30px;
      }

      .page-desc {
        font-size: 15px;
      }

      .steps-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }

      .step-card {
        padding: 24px 20px;
      }

      .cards-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .card-cover {
        height: 180px;
      }

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

      .stat-num {
        font-size: 34px;
      }

      .faq-question {
        padding: 18px 18px;
        font-size: 15px;
      }

      .faq-answer {
        padding: 0 18px;
      }

      .bottom-cta {
        padding: 56px 0;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .footer-bottom {
        flex-direction: column;
        gap: 4px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding: 0 18px;
      }

      .header-inner {
        height: 64px;
      }

      .header-inner .btn-sm {
        padding: 8px 14px;
        font-size: 13px;
      }

      .logo-text {
        font-size: 17px;
      }

      .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 12px;
      }

      .page-header h1 {
        font-size: 26px;
      }

      .card-body {
        padding: 20px;
      }
    }