/* roulang page: index */
:root {
  --bg-primary: #F6F4EF;
  --bg-secondary: #EDF1EC;
  --bg-card: #FFFFFF;
  --surface-dark: #19322E;
  --primary: #1E5C50;
  --primary-hover: #15453B;
  --accent: #B4792F;
  --text-heading: #1F2A28;
  --text-body: #44504D;
  --text-muted: #7D8A86;
  --border-light: #E2E6E1;
  --line-rule: #D6DCD6;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 3px rgba(25, 50, 46, 0.04);
  --shadow-md: 0 4px 20px rgba(25, 50, 46, 0.07);
  --shadow-lg: 0 8px 30px rgba(25, 50, 46, 0.12);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-10: 80px;
  --transition: 0.2s ease;
  --font-serif: Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-body);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  outline: none;
  background: none;
  color: inherit;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #fff;
  box-shadow: 0 6px 16px rgba(30, 92, 80, 0.18);
}

.btn-primary .arrow {
  transition: transform var(--transition);
}

.btn-primary:hover .arrow {
  transform: translateX(2px);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}

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

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

.btn-outline:active {
  transform: translateY(1px);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

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

.btn-text {
  background: transparent;
  color: var(--primary);
  padding: 8px 4px;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.btn-text:hover {
  color: var(--primary-hover);
  text-decoration: none;
}

.btn-text .arrow {
  transition: transform var(--transition);
}

.btn-text:hover .arrow {
  transform: translateX(2px);
}

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

.btn-light:hover {
  background: rgba(255,255,255,0.88);
  color: var(--primary-hover);
  box-shadow: 0 6px 16px rgba(0,0,0,0.12);
}

/* Section titles */
.section-head {
  margin-bottom: var(--space-4);
}

.section-head h2 {
  font-size: 34px;
  line-height: 1.35;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.section-line {
  display: block;
  width: 28px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--bg-secondary);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 244, 239, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-rule);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(25, 50, 46, 0.06);
}

.site-header.scrolled .header-nav .nav-tags {
  opacity: 0;
  visibility: hidden;
  height: 0;
  overflow: hidden;
}

.header-top {
  border-bottom: 1px solid transparent;
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  font-size: 22px;
  color: var(--text-heading);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 28px;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.logo-text {
  font-weight: 400;
  font-size: 20px;
  color: var(--text-heading);
  margin-left: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-search {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  height: 36px;
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition), width 0.3s ease;
  width: 180px;
}

.header-search:focus-within {
  width: 260px;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 92, 80, 0.15);
}

.header-search input {
  flex: 1;
  height: 100%;
  padding: 0 12px;
  font-size: 13px;
  color: var(--text-body);
  background: transparent;
  border: none;
}

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

.header-search button {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  transition: color var(--transition);
  background: transparent;
  border-left: 1px solid var(--border-light);
}

.header-search button:hover {
  color: var(--primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--border-light);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-heading);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.header-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  gap: 24px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.nav-link {
  display: inline-block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--primary);
  border-bottom-color: rgba(30, 92, 80, 0.4);
}

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

.nav-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow: hidden;
  white-space: nowrap;
  transition: opacity 0.3s ease, visibility 0.3s ease, height 0.3s ease;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 14px;
  font-size: 12px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* Hero */
.hero {
  min-height: 92vh;
  background-color: var(--bg-primary);
  background-image: linear-gradient(rgba(30, 92, 80, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(30, 92, 80, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  display: flex;
  align-items: center;
  padding: 80px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 540px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 56px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
  animation: heroFadeUp 0.6s ease 0.1s both;
}

.hero-title .highlight {
  color: var(--accent);
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: 32px;
  max-width: 460px;
  animation: heroFadeUp 0.6s ease 0.2s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
  animation: heroFadeUp 0.6s ease 0.3s both;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  animation: heroFadeUp 0.6s ease 0.4s both;
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.trust-item svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
}

.hero-visual {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--bg-secondary);
  box-shadow: var(--shadow-md);
  animation: heroFadeUp 0.6s ease 0.25s both;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(130deg, rgba(25, 50, 46, 0.15) 0%, rgba(25, 50, 46, 0) 40%);
  pointer-events: none;
}

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Features */
.features {
  padding: var(--space-10) 0;
  background: var(--bg-primary);
}

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

.feature-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  color: var(--text-body);
}

.feature-card:hover {
  border-color: var(--primary);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-md);
  color: var(--text-body);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-secondary);
  color: var(--primary);
  margin-bottom: 20px;
  transition: background var(--transition), color var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--primary);
  color: #fff;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 10px;
  line-height: 1.45;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Showcase */
.showcase {
  padding: var(--space-10) 0;
  background: var(--bg-secondary);
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.showcase-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
}

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

.showcase-content h2 {
  font-size: 34px;
  line-height: 1.35;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 20px;
}

.showcase-content > p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 24px;
}

.check-list {
  margin-bottom: 32px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-body);
  margin-bottom: 12px;
}

.check-list li svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--primary);
  margin-top: 4px;
}

/* Proof */
.proof {
  padding: var(--space-10) 0;
  background: var(--bg-primary);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 64px;
}

.stat-item {
  border-top: 2px solid var(--line-rule);
  padding-top: 24px;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1.1;
}

.stat-suffix {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--accent);
  margin-left: 4px;
}

.stat-label {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
}

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

.proof-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.proof-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.proof-logo {
  display: inline-block;
  font-weight: 600;
  font-size: 15px;
  color: var(--primary);
  background: var(--bg-secondary);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

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

/* Pricing */
.pricing {
  padding: var(--space-10) 0;
  background: var(--bg-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: flex-start;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.price-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.price-card.featured {
  border: 2px solid var(--primary);
  background: #fff;
  transform: translateY(-12px);
  box-shadow: var(--shadow-lg);
}

.price-card.featured:hover {
  transform: translateY(-14px);
}

.badge {
  position: absolute;
  top: -14px;
  left: 32px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-full);
}

.price-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.price-desc {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}

.price-card ul {
  margin-bottom: 32px;
}

.price-card ul li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-body);
  margin-bottom: 10px;
}

.price-card ul li::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 8px;
}

.price-card .btn {
  width: 100%;
}

/* FAQ */
.faq {
  padding: var(--space-10) 0;
  background: var(--bg-primary);
}

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

.faq-head h2 {
  font-size: 34px;
  font-weight: 600;
  color: var(--text-heading);
}

.faq-actions {
  flex-shrink: 0;
}

.faq-toggle-all {
  font-size: 13px;
  color: var(--primary);
  background: transparent;
  cursor: pointer;
  padding: 6px 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), color var(--transition);
}

.faq-toggle-all:hover {
  border-color: var(--primary);
  color: var(--primary-hover);
}

.faq-list {
  border-top: 1px solid var(--line-rule);
}

.faq-item {
  border-bottom: 1px solid var(--line-rule);
  padding: 24px 0;
}

.faq-q {
  display: flex;
  align-items: center;
  gap: 20px;
  cursor: pointer;
}

.faq-num {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--accent);
  font-weight: 400;
  flex-shrink: 0;
  width: 32px;
}

.faq-q h3 {
  flex: 1;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-heading);
  line-height: 1.5;
  transition: color var(--transition);
}

.faq-item.active .faq-q h3 {
  color: var(--primary);
}

.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--text-muted);
  transition: transform 0.2s ease, background 0.2s ease;
}

.faq-icon::before {
  width: 2px;
  height: 16px;
  transform: translate(-50%, -50%);
}

.faq-icon::after {
  width: 16px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.faq-item.active .faq-icon::before {
  transform: translate(-50%, -50%) rotate(90deg);
  background: var(--primary);
}

.faq-item.active .faq-icon::after {
  background: var(--primary);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s linear;
}

.faq-a p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
  padding: 12px 0 0 52px;
}

.faq-item.active .faq-a {
  max-height: 500px;
}

/* Latest / CMS */
.latest {
  padding: var(--space-10) 0;
  background: var(--bg-secondary);
}

.latest-list {
  border-top: 1px solid var(--line-rule);
}

.latest-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-rule);
}

.latest-date {
  flex-shrink: 0;
  width: 110px;
  font-size: 14px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  font-family: var(--font-sans);
}

.latest-title {
  flex: 1;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-heading);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color var(--transition), text-decoration-color var(--transition);
}

.latest-title:hover {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.latest-cat {
  flex-shrink: 0;
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 3px 12px;
}

.latest-empty {
  padding: 40px 0;
  text-align: center;
  color: var(--text-muted);
  border-bottom: 1px solid var(--line-rule);
}

.latest-more {
  margin-top: 32px;
  text-align: right;
}

/* CTA band */
.cta-band {
  background: var(--surface-dark);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-inner h2 {
  font-size: 34px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 32px;
}

/* Footer */
.site-footer {
  background: var(--surface-dark);
  color: rgba(255, 255, 255, 0.7);
  padding-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

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

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

.footer-brand .logo-text {
  color: rgba(255, 255, 255, 0.9);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  max-width: 260px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 20px 0 24px;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-links a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  margin-left: 20px;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}

/* Float CTA */
.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

.float-cta.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.float-cta a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  text-decoration: none;
  transition: width 0.3s ease, border-radius 0.3s ease, background var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(30, 92, 80, 0.35);
  overflow: hidden;
}

.float-cta a:hover {
  background: var(--primary-hover);
  width: 132px;
  border-radius: 24px;
  box-shadow: 0 6px 24px rgba(30, 92, 80, 0.4);
}

.float-cta a svg {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
}

.float-cta a span {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.float-cta a:hover span {
  opacity: 1;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile menu drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  z-index: 99;
  padding: 80px 24px 32px;
  overflow-y: auto;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav.active {
  display: flex;
}

.mobile-nav a {
  display: block;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-heading);
  padding: 16px 0;
  border-bottom: 1px solid var(--line-rule);
  text-decoration: none;
  transition: color var(--transition);
}

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

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

.mobile-nav .mobile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.mobile-nav .mobile-tags .tag {
  font-size: 13px;
  padding: 6px 16px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  border-radius: var(--radius-full);
}

/* Responsive */
@media (max-width: 1023px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .price-card.featured {
    transform: translateY(0);
  }

  .price-card.featured:hover {
    transform: translateY(-2px);
  }

  .proof-cards {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }

  .header-search {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header-nav {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 48px 0 32px;
  }

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

  .hero-title {
    font-size: 36px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .features {
    padding: 48px 0;
  }

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

  .showcase {
    padding: 48px 0;
  }

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

  .showcase-content h2 {
    font-size: 22px;
  }

  .proof {
    padding: 48px 0;
  }

  .stats-row {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 40px;
  }

  .proof-cards {
    grid-template-columns: 1fr;
  }

  .pricing {
    padding: 48px 0;
  }

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

  .faq {
    padding: 48px 0;
  }

  .faq-head h2 {
    font-size: 22px;
  }

  .faq-actions {
    display: none;
  }

  .faq-num {
    width: 24px;
  }

  .faq-a p {
    padding-left: 44px;
  }

  .latest {
    padding: 48px 0;
  }

  .latest-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 16px 0;
  }

  .latest-date {
    width: auto;
    font-size: 13px;
  }

  .latest-title {
    white-space: normal;
    font-size: 15px;
  }

  .cta-band {
    padding: 48px 0;
  }

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

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

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

  .footer-links a {
    margin: 0 8px;
  }

  .float-cta {
    right: 16px;
    bottom: 16px;
  }

  .float-cta a {
    width: 44px;
    height: 44px;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .hero-grid {
    gap: 40px;
  }

  .hero-title {
    font-size: 42px;
  }

  .section-head h2 {
    font-size: 28px;
  }

  .showcase-content h2,
  .faq-head h2,
  .cta-inner h2 {
    font-size: 28px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* roulang page: category1 */
:root {
  --bg-primary: #F6F4EF;
  --bg-secondary: #EDF1EC;
  --bg-card: #FFFFFF;
  --surface-dark: #19322E;
  --primary: #1E5C50;
  --primary-hover: #15453B;
  --accent: #B4792F;
  --text-heading: #1F2A28;
  --text-body: #44504D;
  --text-muted: #7D8A86;
  --border-light: #E2E6E1;
  --line-rule: #D6DCD6;
  --radius-card: 8px;
  --radius-btn: 4px;
  --radius-tag: 999px;
  --shadow-card: 0 1px 2px rgba(25,50,46,0.03);
  --shadow-hover: 0 4px 20px rgba(25,50,46,0.07);
  --shadow-feature: 0 8px 30px rgba(25,50,46,0.10);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-10: 80px;
  --container: 1200px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-serif: Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary-hover); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, button, textarea, select { font-family: inherit; font-size: 100%; }
ul, ol { list-style: none; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
@media (max-width: 767px) {
  .container { padding-left: 16px; padding-right: 16px; }
}
h1, h2, h3, h4 { color: var(--text-heading); line-height: 1.35; }
h2 {
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
h3 {
  font-size: 20px;
  font-weight: 600;
}
@media (max-width: 767px) {
  h2 { font-size: 22px; }
  h3 { font-size: 17px; }
}
.section-head {
  margin-bottom: 32px;
}
.section-head .section-title {
  display: block;
  font-size: 34px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 0;
}
.section-head .section-line {
  display: block;
  width: 28px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
  margin-top: 14px;
}
@media (max-width: 767px) {
  .section-head .section-title { font-size: 22px; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  box-shadow: 0 6px 16px rgba(30,92,80,0.18);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}
.btn-light {
  background: #fff;
  color: var(--primary);
}
.btn-light:hover {
  background: rgba(255,255,255,0.88);
  color: var(--primary-hover);
  box-shadow: 0 6px 16px rgba(0,0,0,0.18);
}
.tag-badge {
  display: inline-block;
  padding: 3px 14px;
  background: var(--bg-secondary);
  border-radius: var(--radius-tag);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-body);
  line-height: 1.8;
  transition: all 0.2s ease;
}
a.tag-badge:hover {
  background: var(--primary);
  color: #fff;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(246,244,239,0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-rule);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(255,255,255,0.96);
  box-shadow: 0 2px 16px rgba(25,50,46,0.06);
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--font-sans);
  text-decoration: none;
}
.logo-mark {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 26px;
  color: var(--primary);
  letter-spacing: -0.01em;
}
.logo-text {
  font-weight: 400;
  font-size: 18px;
  color: var(--text-heading);
  letter-spacing: 0.04em;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.header-search {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-btn);
  height: 38px;
  width: 180px;
  overflow: hidden;
  transition: width 0.25s ease, box-shadow 0.2s ease;
}
.header-search:focus-within {
  width: 260px;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30,92,80,0.15);
}
.header-search input {
  flex: 1;
  min-width: 0;
  height: 36px;
  border: none;
  outline: none;
  background: transparent;
  padding: 0 12px;
  font-size: 14px;
  color: var(--text-heading);
}
.header-search input::placeholder {
  color: var(--text-muted);
}
.header-search button {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color 0.2s ease;
}
.header-search button:hover {
  color: var(--primary);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-btn);
  transition: background 0.2s ease;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 22px;
  background: var(--text-heading);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.header-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 46px;
  gap: 24px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  padding: 14px 0 10px;
  transition: color 0.2s ease;
}
.nav-link:hover {
  color: var(--primary);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  overflow: hidden;
}
.nav-tags .tag {
  padding: 3px 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-tag);
  font-size: 12px;
  color: var(--text-body);
  white-space: nowrap;
  line-height: 1.8;
}
.mobile-search {
  display: none;
}
@media (max-width: 1023px) {
  .header-search { width: 140px; }
  .header-search:focus-within { width: 200px; }
}
@media (max-width: 767px) {
  .header-top-inner { height: 56px; }
  .logo-mark { font-size: 24px; }
  .logo-text { font-size: 16px; }
  .header-right { gap: 8px; }
  .header-search { display: none; }
  .nav-toggle { display: flex; }
  .header-nav {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 110;
    overflow-y: auto;
    padding: 24px 16px 40px;
    border-top: 1px solid var(--line-rule);
  }
  .header-nav.open {
    display: block;
  }
  .header-nav-inner {
    flex-direction: column;
    align-items: stretch;
    height: auto;
    gap: 0;
  }
  .main-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .nav-link {
    font-size: 17px;
    padding: 14px 4px;
    border-bottom: 1px solid var(--border-light);
  }
  .nav-link.active::after {
    display: none;
  }
  .nav-link.active {
    color: var(--primary);
    border-left: 3px solid var(--primary);
    padding-left: 12px;
  }
  .nav-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
  }
  .nav-tags .tag {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
  }
  .mobile-search {
    display: block;
    margin-bottom: 20px;
  }
  .mobile-search .header-search {
    display: flex;
    width: 100%;
  }
}

.category-hero {
  position: relative;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--line-rule);
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  background: url('/assets/images/backpic/back-1.webp') right center / cover no-repeat;
  opacity: 0.10;
  pointer-events: none;
}
.category-hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding-top: 64px;
  padding-bottom: 64px;
  min-height: 220px;
}
.category-hero-text {
  max-width: 680px;
}
.category-hero-text h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.category-hero-text p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
  max-width: 620px;
}
.category-hero-action {
  flex-shrink: 0;
}
@media (max-width: 767px) {
  .category-hero-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .category-hero-text h1 { font-size: 26px; }
  .category-hero-text p { font-size: 15px; }
}

.feature-grid-section {
  background: var(--bg-secondary);
  padding: var(--space-10) 0;
}
@media (max-width: 767px) {
  .feature-grid-section { padding: 48px 0; }
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 1023px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .feature-grid { grid-template-columns: 1fr; }
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 32px 24px 28px;
  cursor: pointer;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.feature-card:hover {
  border-color: var(--primary);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hover);
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

.main-content-section {
  background: var(--bg-primary);
  padding: var(--space-10) 0;
}
@media (max-width: 767px) {
  .main-content-section { padding: 48px 0; }
}
.content-layout {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 40px;
  align-items: start;
}
@media (max-width: 1023px) {
  .content-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
.guide-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.guide-item {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 20px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.2s ease;
  cursor: pointer;
}
.guide-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.guide-thumb {
  flex-shrink: 0;
  width: 200px;
  height: 150px;
  border-radius: var(--radius-card);
  overflow: hidden;
}
.guide-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.guide-item:hover .guide-thumb img {
  transform: scale(1.02);
}
.guide-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.guide-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
  line-height: 1.4;
  transition: color 0.2s ease;
}
.guide-body h3:hover {
  color: var(--primary);
}
.guide-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.guide-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.guide-meta .tag-badge {
  font-size: 12px;
}
@media (max-width: 767px) {
  .guide-item {
    flex-direction: column;
  }
  .guide-thumb {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
  }
  .guide-thumb img {
    width: 100%;
    height: 100%;
  }
}

.content-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 24px;
}
.sidebar-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-rule);
}
.sidebar-intro p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-body);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.sidebar-links li {
  border-bottom: 1px solid var(--border-light);
}
.sidebar-links li:last-child {
  border-bottom: none;
}
.sidebar-links a {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-body);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.sidebar-links a:hover {
  color: var(--primary);
  padding-left: 6px;
}

.scenario-section {
  background: var(--bg-secondary);
  padding: var(--space-10) 0;
}
@media (max-width: 767px) {
  .scenario-section { padding: 48px 0; }
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 1023px) {
  .scenario-grid { grid-template-columns: 1fr; }
}
.scenario-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: 28px 24px;
}
.scenario-card .scenario-num {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 14px;
}
.scenario-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
}
.scenario-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

.faq-section {
  background: var(--bg-primary);
  padding: var(--space-10) 0;
}
@media (max-width: 767px) {
  .faq-section { padding: 48px 0; }
}
.faq-head-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}
.faq-toggle-all {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--primary);
  padding: 4px 8px;
  border-radius: var(--radius-btn);
  transition: background 0.2s ease;
}
.faq-toggle-all:hover {
  background: var(--bg-secondary);
}
@media (max-width: 767px) {
  .faq-toggle-all { display: none; }
}
.faq-list {
  margin-top: 8px;
}
.faq-item {
  border-bottom: 1px solid var(--line-rule);
  padding: 24px 0;
}
.faq-item:first-child {
  border-top: 1px solid var(--line-rule);
}
.faq-question-row {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  cursor: pointer;
}
.faq-num {
  flex-shrink: 0;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  color: var(--accent);
  width: 36px;
  line-height: 1.6;
}
.faq-question {
  flex: 1;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-heading);
  line-height: 1.5;
  transition: color 0.2s ease;
}
.faq-item.open .faq-question {
  color: var(--primary);
}
.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 20px;
  font-weight: 300;
  transition: transform 0.25s ease, color 0.2s ease;
  line-height: 1;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, margin 0.3s ease;
}
.faq-answer-inner {
  padding: 14px 0 4px 60px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
}
@media (max-width: 767px) {
  .faq-answer-inner {
    padding-left: 0;
  }
}

.cta-band {
  background: var(--surface-dark);
  padding: 64px 0;
}
.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-band h2 {
  color: #fff;
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 8px;
}
.cta-band p {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  max-width: 600px;
}
.cta-band .btn {
  flex-shrink: 0;
}
@media (max-width: 767px) {
  .cta-band { padding: 48px 0; }
  .cta-band h2 { font-size: 22px; }
  .cta-band-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

.site-footer {
  background: var(--surface-dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
@media (max-width: 1023px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 767px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 32px;
  }
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand .logo-mark {
  color: #fff;
}
.footer-brand .logo-text {
  color: rgba(255,255,255,0.92);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255,255,255,0.55);
  max-width: 320px;
}
.footer-col h4 {
  color: rgba(255,255,255,0.9);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  transition: color 0.2s ease;
}
.footer-col a:hover {
  color: #fff;
  text-decoration: underline;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-copy {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  font-variant-numeric: tabular-nums;
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: #fff;
}
@media (max-width: 767px) {
  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 100;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(30,92,80,0.28);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.3s ease;
}
.float-cta.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.float-cta:hover {
  background: var(--primary-hover);
  width: 128px;
  border-radius: 24px;
  gap: 6px;
  color: #fff;
}
.float-cta .cta-text {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  max-width: 0;
  overflow: hidden;
  transition: opacity 0.2s ease, max-width 0.3s ease;
}
.float-cta:hover .cta-text {
  opacity: 1;
  max-width: 80px;
}
@media (max-width: 767px) {
  .float-cta {
    right: 16px;
    bottom: 16px;
  }
}

/* roulang page: article */
:root {
  --bg-primary: #F6F4EF;
  --bg-secondary: #EDF1EC;
  --bg-card: #FFFFFF;
  --surface-dark: #19322E;
  --primary: #1E5C50;
  --primary-hover: #15453B;
  --accent: #B4792F;
  --text-heading: #1F2A28;
  --text-body: #44504D;
  --text-muted: #7D8A86;
  --border-light: #E2E6E1;
  --line-rule: #D6DCD6;
  --radius-card: 8px;
  --radius-btn: 4px;
  --radius-tag: 999px;
  --shadow-hover: 0 4px 20px rgba(25, 50, 46, 0.07);
  --shadow-primary: 0 6px 16px rgba(30, 92, 80, 0.18);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-serif: Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", serif;
  --container: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg-primary); color: var(--text-body); line-height: 1.75; font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary-hover); }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 244, 239, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-rule);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 12px rgba(25, 50, 46, 0.06);
}
.header-top { padding: 12px 0; }
.header-top-inner, .header-nav-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { display: inline-flex; align-items: center; gap: 4px; font-size: 24px; }
.logo-mark { font-family: var(--font-serif); font-weight: 700; color: var(--text-heading); }
.logo-text { font-weight: 400; color: var(--text-heading); }
.header-right { display: flex; align-items: center; gap: 16px; }
.header-search { display: flex; align-items: center; background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-btn); height: 40px; padding: 0 10px; width: 180px; transition: width 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease; }
.header-search:focus-within { width: 260px; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(30, 92, 80, 0.15); }
.header-search input { border: none; outline: none; background: transparent; flex: 1; font-size: 14px; color: var(--text-heading); padding: 0 8px; }
.header-search button { background: transparent; border: none; color: var(--text-muted); display: flex; align-items: center; justify-content: center; padding: 4px; }
.header-search button:hover { color: var(--primary); }
.header-nav { border-top: 1px solid var(--line-rule); }
.header-nav-inner { min-height: 48px; }
.main-nav { display: flex; gap: 4px; }
.nav-link { display: inline-block; padding: 12px 16px; font-size: 15px; font-weight: 500; color: var(--text-body); position: relative; transition: color 0.2s; }
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: 6px; height: 2px; background: var(--primary); border-radius: 2px; }
.nav-tags { display: flex; gap: 8px; }
.tag { display: inline-block; padding: 4px 12px; font-size: 13px; background: var(--bg-secondary); color: var(--text-muted); border-radius: var(--radius-tag); transition: background 0.2s, color 0.2s; white-space: nowrap; }
.tag:hover { background: var(--primary); color: #fff; }
.nav-toggle { display: none; flex-direction: column; gap: 4px; background: transparent; border: none; padding: 8px; }
.nav-toggle span { width: 20px; height: 2px; background: var(--text-heading); border-radius: 2px; transition: transform 0.2s, opacity 0.2s; }

.article-main { padding: 48px 0 80px; }
.article-container { max-width: 760px; margin: 0 auto; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.breadcrumb a { color: var(--text-muted); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--line-rule); }
.breadcrumb .current { color: var(--text-heading); font-weight: 500; }
.article-header { margin-bottom: 32px; }
.article-title { font-family: var(--font-serif); font-size: 36px; line-height: 1.3; color: var(--text-heading); font-weight: 700; margin-bottom: 16px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--text-muted); border-bottom: 1px solid var(--line-rule); padding-bottom: 16px; }
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.article-content { font-size: 16px; line-height: 1.9; color: var(--text-body); }
.article-content p { margin: 0 0 16px; }
.article-content h2 { font-size: 24px; font-weight: 600; color: var(--text-heading); margin: 32px 0 12px; line-height: 1.4; }
.article-content h3 { font-size: 19px; font-weight: 600; color: var(--text-heading); margin: 24px 0 10px; }
.article-content ul, .article-content ol { margin: 0 0 16px; padding-left: 24px; }
.article-content li { margin-bottom: 6px; }
.article-content a { color: var(--primary); text-decoration: underline; }
.article-content a:hover { color: var(--primary-hover); }
.article-content blockquote { margin: 20px 0; padding: 16px 20px; background: var(--bg-secondary); border-left: 3px solid var(--primary); border-radius: 0 var(--radius-btn) var(--radius-btn) 0; color: var(--text-heading); }
.article-content img { max-width: 100%; border-radius: var(--radius-card); margin: 16px 0; }
.article-content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.article-content table th, .article-content table td { border: 1px solid var(--border-light); padding: 8px 12px; text-align: left; }
.article-content table th { background: var(--bg-secondary); font-weight: 600; }
.article-content code { background: var(--bg-secondary); padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }
.article-empty { text-align: center; padding: 80px 0; }
.article-empty p { font-size: 24px; color: var(--text-heading); margin-bottom: 16px; }
.article-empty a { display: inline-block; padding: 10px 24px; background: var(--primary); color: #fff; border-radius: var(--radius-btn); font-weight: 600; transition: background 0.2s; }
.article-empty a:hover { background: var(--primary-hover); color: #fff; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line-rule); }
.prev-next { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 32px; }
.prev-next a { display: flex; flex-direction: column; gap: 4px; padding: 16px 20px; border: 1px solid var(--border-light); border-radius: var(--radius-card); background: var(--bg-card); transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s; }
.prev-next a:hover { border-color: var(--primary); box-shadow: var(--shadow-hover); transform: translate(-2px, -2px); }
.prev-next .dir { font-size: 13px; color: var(--text-muted); }
.prev-next .title { font-size: 14px; font-weight: 600; color: var(--text-heading); }

.related-section { background: var(--bg-secondary); padding: 56px 0; }
.related-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 28px; }
.related-head h2 { font-size: 28px; font-weight: 600; color: var(--text-heading); position: relative; padding-bottom: 12px; }
.related-head h2::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 4px; background: var(--primary); border-radius: 2px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-card); overflow: hidden; transition: transform 0.2s, box-shadow 0.2s; }
.related-card:hover { transform: translate(-2px, -2px); box-shadow: var(--shadow-hover); }
.related-card img { width: 100%; height: 120px; object-fit: cover; }
.related-card .related-body { padding: 16px; }
.related-card h3 { font-size: 15px; font-weight: 600; color: var(--text-heading); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.site-footer { background: var(--surface-dark); color: rgba(255, 255, 255, 0.8); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .logo .logo-mark, .footer-brand .logo .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-top: 16px; max-width: 320px; line-height: 1.8; }
.footer-col h4 { font-size: 14px; color: rgba(255, 255, 255, 0.5); margin-bottom: 16px; font-weight: 600; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col a { color: rgba(255, 255, 255, 0.7); font-size: 14px; transition: color 0.2s; }
.footer-col a:hover { color: #fff; text-decoration: underline; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 20px 0; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-copy { font-size: 13px; color: rgba(255, 255, 255, 0.5); }
.footer-links { display: flex; gap: 16px; }
.footer-links a { font-size: 13px; color: rgba(255, 255, 255, 0.5); transition: color 0.2s; }
.footer-links a:hover { color: #fff; }

.float-cta { position: fixed; right: 24px; bottom: 24px; width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-primary); z-index: 99; transition: width 0.3s ease, border-radius 0.3s ease, background 0.2s, opacity 0.3s, visibility 0.3s, transform 0.3s; overflow: hidden; opacity: 0; visibility: hidden; transform: translateY(8px); }
.float-cta.show { opacity: 1; visibility: visible; transform: translateY(0); }
.float-cta:hover { width: 130px; border-radius: 40px; background: var(--primary-hover); padding-left: 12px; }
.float-cta .icon { flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.float-cta .label { font-size: 14px; font-weight: 600; margin-left: 8px; white-space: nowrap; opacity: 0; max-width: 0; transition: opacity 0.2s, max-width 0.2s; }
.float-cta:hover .label { opacity: 1; max-width: 100px; }

@media (max-width: 1023px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .header-top { padding: 10px 0; }
  .header-search { display: none; }
  .header-nav { position: fixed; top: 0; right: -100%; width: 100%; height: 100vh; background: var(--bg-primary); z-index: 200; transition: right 0.3s ease; padding: 80px 24px 24px; overflow-y: auto; }
  .header-nav.open { right: 0; }
  .header-nav-inner { flex-direction: column; align-items: flex-start; min-height: 0; }
  .main-nav { flex-direction: column; width: 100%; }
  .nav-link { display: block; padding: 14px 0; border-bottom: 1px solid var(--line-rule); width: 100%; }
  .nav-link.active::after { display: none; }
  .nav-tags { display: none; }
  .nav-toggle { display: flex; }
  .nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .article-main { padding: 32px 0 56px; }
  .article-title { font-size: 30px; }
  .article-content { font-size: 16px; }
  .prev-next { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .float-cta { right: 16px; bottom: 16px; width: 44px; height: 44px; }
  .float-cta:hover { width: 44px; padding-left: 0; }
  .float-cta .label { display: none; }
}

/* roulang page: category2 */
/* ===== Design Tokens ===== */
    :root {
      --bg-primary: #F6F4EF;
      --bg-secondary: #EDF1EC;
      --bg-card: #FFFFFF;
      --surface-dark: #19322E;
      --primary: #1E5C50;
      --primary-hover: #15453B;
      --accent: #B4792F;
      --text-heading: #1F2A28;
      --text-body: #44504D;
      --text-muted: #7D8A86;
      --border-light: #E2E6E1;
      --line-rule: #D6DCD6;
      --radius-card: 8px;
      --radius-btn: 4px;
      --radius-tag: 999px;
      --shadow-card: 0 2px 12px rgba(25, 50, 46, 0.05);
      --shadow-hover: 0 4px 20px rgba(25, 50, 46, 0.08);
      --transition: 0.2s ease;
      --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-serif: Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", serif;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }
    body {
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-body);
      background: var(--bg-primary);
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
      object-fit: cover;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color var(--transition);
    }
    a:hover {
      color: var(--primary-hover);
    }
    ul, ol {
      list-style: none;
    }
    button, input, textarea {
      font-family: inherit;
      font-size: inherit;
      border: none;
      outline: none;
      background: none;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .section {
      padding: 80px 0;
    }
    .section-header {
      margin-bottom: 32px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      letter-spacing: 0.06em;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 34px;
      line-height: 1.35;
      font-weight: 600;
      color: var(--text-heading);
      position: relative;
      padding-bottom: 20px;
    }
    .section-title::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 28px;
      height: 4px;
      background: var(--primary);
      border-radius: 2px;
    }
    .section-subtitle {
      font-size: 15px;
      color: var(--text-muted);
      margin-top: 12px;
      max-width: 640px;
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-btn);
      cursor: pointer;
      transition: all var(--transition);
      line-height: 1.4;
      text-align: center;
    }
    .btn-primary {
      background: var(--primary);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #FFFFFF;
      box-shadow: 0 6px 16px rgba(30, 92, 80, 0.18);
      transform: translateY(-1px);
    }
    .btn-primary:active {
      transform: translateY(1px);
      box-shadow: none;
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #FFFFFF;
    }
    .btn-light {
      background: #FFFFFF;
      color: var(--primary);
    }
    .btn-light:hover {
      background: var(--bg-secondary);
      color: var(--primary-hover);
    }

    /* ===== Header & Navigation ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(246, 244, 239, 0.92);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--line-rule);
      transition: background var(--transition), box-shadow var(--transition);
    }
    .site-header.scrolled {
      background: rgba(255, 255, 255, 0.96);
      box-shadow: 0 2px 12px rgba(25, 50, 46, 0.06);
    }
    .header-top-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 60px;
    }
    .logo {
      display: inline-flex;
      align-items: baseline;
      gap: 2px;
      font-size: 24px;
      white-space: nowrap;
    }
    .logo-mark {
      font-family: var(--font-serif);
      font-weight: 700;
      color: var(--text-heading);
      letter-spacing: -0.02em;
    }
    .logo-text {
      font-weight: 400;
      color: var(--text-heading);
    }
    .header-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .header-search {
      display: flex;
      align-items: center;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-tag);
      height: 36px;
      width: 180px;
      padding: 0 12px;
      transition: width var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    .header-search:focus-within {
      width: 260px;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(30, 92, 80, 0.12);
    }
    .header-search input {
      flex: 1;
      font-size: 14px;
      color: var(--text-heading);
      background: transparent;
      border: none;
    }
    .header-search input::placeholder {
      color: var(--text-muted);
    }
    .header-search button {
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-muted);
      cursor: pointer;
      padding: 4px;
      transition: color var(--transition);
    }
    .header-search button:hover {
      color: var(--primary);
    }
    .nav-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 36px;
      height: 36px;
      border-radius: 4px;
      cursor: pointer;
      padding: 6px;
    }
    .nav-toggle span {
      display: block;
      height: 2px;
      width: 22px;
      background: var(--text-heading);
      border-radius: 2px;
      transition: transform 0.25s ease, opacity 0.2s ease;
    }
    .nav-toggle.open span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle.open span:nth-child(2) {
      opacity: 0;
    }
    .nav-toggle.open span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }
    .header-nav {
      border-top: 1px solid rgba(214, 220, 214, 0.6);
    }
    .header-nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 44px;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 32px;
      height: 100%;
    }
    .nav-link {
      display: inline-flex;
      align-items: center;
      height: 100%;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
      transition: color var(--transition);
      white-space: nowrap;
    }
    .nav-link::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
      transform: scaleX(0);
      transform-origin: left center;
      transition: transform 0.25s ease;
    }
    .nav-link:hover {
      color: var(--primary);
    }
    .nav-link.active {
      color: var(--primary);
      font-weight: 600;
    }
    .nav-link.active::after {
      transform: scaleX(1);
    }
    .nav-tags {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .tag {
      display: inline-block;
      font-size: 12px;
      line-height: 1;
      padding: 6px 12px;
      background: var(--bg-secondary);
      border-radius: var(--radius-tag);
      color: var(--text-body);
      transition: background var(--transition), color var(--transition);
      white-space: nowrap;
      cursor: default;
    }
    .tag:hover {
      background: var(--primary);
      color: #FFFFFF;
    }

    /* ===== Category Hero (顶部信息栏) ===== */
    .category-hero {
      background: var(--bg-secondary);
      padding: 56px 0 48px;
      position: relative;
      overflow: hidden;
    }
    .category-hero::before {
      content: "";
      position: absolute;
      right: -80px;
      top: -80px;
      width: 240px;
      height: 240px;
      border-radius: 50%;
      border: 32px solid rgba(30, 92, 80, 0.06);
    }
    .category-hero-inner {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }
    .category-hero-info {
      max-width: 720px;
    }
    .category-hero-breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 16px;
    }
    .category-hero-breadcrumb a {
      color: var(--text-muted);
    }
    .category-hero-breadcrumb a:hover {
      color: var(--primary);
    }
    .category-hero-breadcrumb .sep {
      color: var(--border-light);
    }
    .category-hero-breadcrumb .current {
      color: var(--text-body);
      font-weight: 500;
    }
    .category-hero h1 {
      font-size: 38px;
      line-height: 1.3;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 12px;
      position: relative;
      padding-left: 16px;
    }
    .category-hero h1::before {
      content: "";
      position: absolute;
      left: 0;
      top: 8px;
      width: 4px;
      height: 30px;
      background: var(--accent);
      border-radius: 2px;
    }
    .category-hero-desc {
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-body);
      max-width: 620px;
    }
    .category-hero-action {
      flex-shrink: 0;
    }

    /* ===== News Main Area (动态流两栏) ===== */
    .news-main-area {
      display: grid;
      grid-template-columns: 1fr 300px;
      gap: 40px;
      align-items: start;
    }
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .news-list-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 4px;
    }
    .news-list-header h2 {
      font-size: 22px;
      font-weight: 600;
      color: var(--text-heading);
    }
    .news-list-header .update-line {
      font-size: 13px;
      color: var(--text-muted);
      font-variant-numeric: tabular-nums;
    }
    .news-card {
      display: flex;
      gap: 20px;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 16px;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }
    .news-card:hover {
      transform: translate(-2px, -2px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(30, 92, 80, 0.25);
    }
    .news-card-media {
      flex: 0 0 240px;
      height: 160px;
      border-radius: 8px;
      overflow: hidden;
    }
    .news-card-media img {
      width: 100%;
      height: 100%;
      transition: transform 2s linear;
    }
    .news-card-media img:hover {
      transform: scale(1.02);
    }
    .news-card-body {
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 8px;
    }
    .badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 500;
      line-height: 1;
      padding: 5px 10px;
      background: var(--bg-secondary);
      color: var(--primary);
      border-radius: var(--radius-tag);
      transition: background var(--transition), color var(--transition);
    }
    .badge:hover {
      background: var(--primary);
      color: #FFFFFF;
    }
    .news-meta time {
      font-size: 13px;
      color: var(--text-muted);
      font-variant-numeric: tabular-nums;
    }
    .news-card-title {
      font-size: 18px;
      font-weight: 600;
      line-height: 1.45;
      color: var(--text-heading);
      margin-bottom: 8px;
    }
    .news-card-title a {
      color: inherit;
    }
    .news-card-title a:hover {
      color: var(--primary);
      text-decoration: underline;
      text-underline-offset: 4px;
    }
    .news-card-desc {
      font-size: 14px;
      line-height: 1.75;
      color: var(--text-muted);
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-top: auto;
    }

    /* ===== Sidebar ===== */
    .news-sidebar {
      display: flex;
      flex-direction: column;
      gap: 24px;
      position: sticky;
      top: 118px;
    }
    .sidebar-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 24px;
    }
    .sidebar-card.is-dark {
      background: var(--surface-dark);
      border-color: transparent;
    }
    .sidebar-card.is-dark .sidebar-card-title {
      color: #FFFFFF;
    }
    .sidebar-card.is-dark .sidebar-card-desc {
      color: rgba(255, 255, 255, 0.72);
    }
    .sidebar-card-title {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-heading);
      margin-bottom: 14px;
      position: relative;
      padding-bottom: 10px;
    }
    .sidebar-card-title::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 24px;
      height: 3px;
      background: var(--primary);
      border-radius: 2px;
    }
    .sidebar-card.is-dark .sidebar-card-title::after {
      background: var(--accent);
    }
    .sidebar-card-desc {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-muted);
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-item {
      display: inline-block;
      font-size: 13px;
      padding: 5px 14px;
      background: var(--bg-secondary);
      border-radius: var(--radius-tag);
      color: var(--text-body);
      transition: all var(--transition);
      cursor: default;
    }
    .tag-item:hover {
      background: var(--primary);
      color: #FFFFFF;
    }
    .sidebar-links li + li {
      margin-top: 10px;
    }
    .sidebar-links a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      color: var(--text-body);
      transition: color var(--transition);
    }
    .sidebar-links a::before {
      content: "→";
      color: var(--accent);
      font-size: 13px;
      transition: transform var(--transition);
    }
    .sidebar-links a:hover {
      color: var(--primary);
    }
    .sidebar-links a:hover::before {
      transform: translateX(4px);
    }

    /* ===== Timeline Section (深色时间线) ===== */
    .timeline-section {
      background: var(--surface-dark);
      color: #FFFFFF;
      padding: 80px 0;
      position: relative;
      overflow: hidden;
    }
    .timeline-section::before {
      content: "";
      position: absolute;
      left: -60px;
      bottom: -60px;
      width: 200px;
      height: 200px;
      border-radius: 50%;
      border: 28px solid rgba(255, 255, 255, 0.04);
    }
    .timeline-section .section-title {
      color: #FFFFFF;
    }
    .timeline-section .section-title::after {
      background: var(--accent);
    }
    .timeline-section .section-subtitle {
      color: rgba(255, 255, 255, 0.6);
    }
    .timeline {
      position: relative;
      margin-top: 48px;
      padding-left: 28px;
    }
    .timeline::before {
      content: "";
      position: absolute;
      left: 8px;
      top: 0;
      bottom: 0;
      width: 2px;
      background: rgba(255, 255, 255, 0.14);
    }
    .timeline-item {
      position: relative;
      padding: 0 0 36px 24px;
    }
    .timeline-item:last-child {
      padding-bottom: 0;
    }
    .timeline-item::before {
      content: "";
      position: absolute;
      left: -28px;
      top: 6px;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 4px rgba(180, 121, 47, 0.2);
    }
    .timeline-date {
      font-size: 13px;
      color: var(--accent);
      font-variant-numeric: tabular-nums;
      margin-bottom: 4px;
      font-family: var(--font-serif);
    }
    .timeline-item h4 {
      font-size: 17px;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 6px;
    }
    .timeline-item p {
      font-size: 14px;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.62);
      max-width: 620px;
    }

    /* ===== Topic Cards (主题卡区) ===== */
    .topic-section {
      background: var(--bg-secondary);
    }
    .topic-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .topic-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }
    .topic-card:hover {
      transform: translate(-2px, -2px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(30, 92, 80, 0.25);
    }
    .topic-icon {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--bg-secondary);
      color: var(--primary);
      margin-bottom: 18px;
    }
    .topic-icon svg {
      width: 22px;
      height: 22px;
    }
    .topic-card h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-heading);
      margin-bottom: 8px;
    }
    .topic-card p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-muted);
    }

    /* ===== FAQ Section ===== */
    .faq-section {
      background: var(--bg-primary);
    }
    .faq-wrap {
      max-width: 860px;
    }
    .faq-toolbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--line-rule);
    }
    .faq-toggle-all {
      font-size: 14px;
      color: var(--primary);
      cursor: pointer;
      background: none;
      font-weight: 500;
      transition: color var(--transition);
    }
    .faq-toggle-all:hover {
      color: var(--primary-hover);
      text-decoration: underline;
      text-underline-offset: 4px;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
    }
    .faq-item {
      border-bottom: 1px solid var(--line-rule);
      padding: 24px 0;
      transition: padding var(--transition);
    }
    .faq-item:first-child {
      padding-top: 0;
    }
    .faq-question {
      display: flex;
      align-items: center;
      gap: 20px;
      cursor: pointer;
      user-select: none;
      font-size: 17px;
      font-weight: 600;
      color: var(--text-heading);
      line-height: 1.5;
      transition: color var(--transition);
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-item.active .faq-question {
      color: var(--primary);
    }
    .faq-num {
      font-family: var(--font-serif);
      font-size: 15px;
      color: var(--accent);
      flex-shrink: 0;
      width: 36px;
      text-align: right;
    }
    .faq-question-text {
      flex: 1;
    }
    .faq-icon {
      position: relative;
      width: 18px;
      height: 18px;
      flex-shrink: 0;
      transition: transform 0.2s ease;
    }
    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--primary);
      border-radius: 2px;
      transition: opacity 0.2s ease;
    }
    .faq-icon::before {
      left: 0;
      top: 8px;
      width: 18px;
      height: 2px;
    }
    .faq-icon::after {
      left: 8px;
      top: 0;
      width: 2px;
      height: 18px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s linear;
      padding-left: 56px;
    }
    .faq-answer-inner {
      padding-top: 12px;
      font-size: 15px;
      line-height: 1.8;
      color: var(--text-body);
      max-width: 680px;
    }

    /* ===== CTA Bar ===== */
    .cta-section {
      background: var(--primary);
      position: relative;
      overflow: hidden;
    }
    .cta-section::before {
      content: "";
      position: absolute;
      right: 0;
      top: 0;
      bottom: 0;
      width: 45%;
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
    }
    .cta-inner {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      padding: 56px 0;
      z-index: 1;
    }
    .cta-info h2 {
      font-size: 28px;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 8px;
      line-height: 1.35;
    }
    .cta-info p {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.8);
      max-width: 520px;
      line-height: 1.7;
    }
    .cta-action {
      flex-shrink: 0;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--surface-dark);
      color: rgba(255, 255, 255, 0.7);
      padding: 64px 0 0;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1fr;
      gap: 48px;
      padding-bottom: 48px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-brand .logo {
      font-size: 22px;
      margin-bottom: 16px;
    }
    .footer-brand .logo-mark,
    .footer-brand .logo-text {
      color: #FFFFFF;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.75;
      color: rgba(255, 255, 255, 0.62);
      max-width: 300px;
      margin-top: 12px;
    }
    .footer-col h4 {
      font-size: 14px;
      font-weight: 600;
      color: rgba(255, 255, 255, 0.9);
      margin-bottom: 16px;
    }
    .footer-col li + li {
      margin-top: 10px;
    }
    .footer-col a {
      color: rgba(255, 255, 255, 0.72);
      font-size: 14px;
      transition: color var(--transition);
    }
    .footer-col a:hover {
      color: #FFFFFF;
      text-decoration: underline;
      text-underline-offset: 4px;
    }
    .footer-bottom {
      padding: 20px 0;
    }
    .footer-bottom-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }
    .footer-copy {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.5);
    }
    .footer-links {
      display: flex;
      gap: 24px;
    }
    .footer-links a {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.5);
      transition: color var(--transition);
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }

    /* ===== Floating CTA ===== */
    .floating-cta {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 90;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: 0 6px 20px rgba(30, 92, 80, 0.35);
      transition: width 0.3s ease, border-radius 0.3s ease, background var(--transition), opacity 0.3s ease, transform 0.3s ease;
      opacity: 0;
      transform: translateY(12px);
      pointer-events: none;
      overflow: hidden;
      white-space: nowrap;
    }
    .floating-cta.visible {
      opacity: 1;
      transform: translateY(0);
      pointer-events: auto;
    }
    .floating-cta:hover {
      width: 130px;
      border-radius: var(--radius-tag);
      background: var(--primary-hover);
    }
    .floating-cta .btn-label {
      font-size: 14px;
      font-weight: 600;
      opacity: 0;
      transition: opacity 0.2s ease;
      padding-left: 8px;
    }
    .floating-cta:hover .btn-label {
      opacity: 1;
    }
    .floating-cta .btn-icon {
      flex-shrink: 0;
      display: flex;
    }

    /* ===== Animations ===== */
    .reveal {
      opacity: 0;
      transform: translateY(12px);
      transition: opacity 0.4s ease, transform 0.4s ease;
    }
    .reveal.in-view {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1023px) {
      .news-main-area {
        grid-template-columns: 1fr;
      }
      .news-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
      }
      .topic-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
      .cta-section::before {
        width: 30%;
      }
    }

    @media (max-width: 767px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .section {
        padding: 48px 0;
      }
      .section-title {
        font-size: 24px;
      }
      .header-top-inner {
        height: 56px;
      }
      .header-search {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .header-nav {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-primary);
        z-index: 99;
        display: none;
        overflow-y: auto;
        border-top: 1px solid var(--line-rule);
      }
      .header-nav.open {
        display: block;
      }
      .header-nav-inner {
        flex-direction: column;
        align-items: flex-start;
        height: auto;
        padding: 24px 16px 40px;
        gap: 24px;
      }
      .main-nav {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        width: 100%;
        height: auto;
      }
      .nav-link {
        height: auto;
        padding: 14px 0;
        font-size: 18px;
        border-bottom: 1px solid var(--line-rule);
        width: 100%;
      }
      .nav-link::after {
        display: none;
      }
      .nav-link.active {
        color: var(--primary);
      }
      .nav-tags {
        flex-wrap: wrap;
      }
      .category-hero {
        padding: 40px 0 32px;
      }
      .category-hero h1 {
        font-size: 28px;
        padding-left: 12px;
      }
      .category-hero h1::before {
        height: 22px;
        top: 6px;
      }
      .category-hero-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
      }
      .category-hero-btn {
        width: 100%;
      }
      .category-hero-btn .btn {
        width: 100%;
      }
      .news-card {
        flex-direction: column;
        padding: 12px;
      }
      .news-card-media {
        flex: none;
        width: 100%;
        height: 180px;
      }
      .news-meta {
        margin-bottom: 6px;
      }
      .news-card-title {
        font-size: 17px;
      }
      .news-sidebar {
        grid-template-columns: 1fr;
      }
      .news-list-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
      }
      .topic-grid {
        grid-template-columns: 1fr;
      }
      .timeline-section {
        padding: 48px 0;
      }
      .timeline {
        padding-left: 20px;
      }
      .timeline-item {
        padding-left: 18px;
      }
      .timeline-item::before {
        left: -20px;
      }
      .faq-question {
        gap: 12px;
        font-size: 16px;
      }
      .faq-num {
        width: 24px;
      }
      .faq-answer {
        padding-left: 36px;
      }
      .cta-inner {
        flex-direction: column;
        align-items: flex-start;
        padding: 40px 0;
      }
      .cta-info h2 {
        font-size: 22px;
      }
      .cta-section::before {
        width: 0;
      }
      .cta-action .btn {
        width: 100%;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .footer-bottom-inner {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-links {
        flex-wrap: wrap;
        gap: 16px;
      }
      .floating-cta {
        right: 16px;
        bottom: 16px;
        width: 44px;
        height: 44px;
      }
    }