/* roulang page: index */
:root {
  --c-primary: #0A5C42;
  --c-primary-light: #C9E8D8;
  --c-primary-dark: #083B2D;
  --c-accent: #F2781E;
  --c-bg: #F4F6F5;
  --c-surface: #FFFFFF;
  --c-text: #1F2731;
  --c-muted: #6B7A82;
  --c-border: #E1E7E4;
  --fs-hero: clamp(2.2rem, 5vw, 3.8rem);
  --fs-section: clamp(1.8rem, 3vw, 2.4rem);
  --fs-card: 1.125rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(11,57,41,0.06);
  --shadow-md: 0 12px 32px rgba(11,57,41,0.12);
  --container: 1200px;
  --spacing-section: 56px;
  --spacing-section-lg: 96px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 56px;
}

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

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

button {
  cursor: pointer;
}

h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 800;
  color: var(--c-text);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: var(--spacing-section) 0;
}

.section-head {
  margin-bottom: 40px;
  max-width: 680px;
}

.section-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-accent);
  background: rgba(242, 120, 30, 0.1);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: var(--fs-section);
  margin-bottom: 12px;
}

.section-head p {
  color: var(--c-muted);
  font-size: 1.05rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.25s ease;
  line-height: 1.2;
  white-space: nowrap;
}

.btn-primary {
  background: var(--c-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(242, 120, 30, 0.3);
}

.btn-primary:hover {
  background: #E05F0A;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(242, 120, 30, 0.4);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.7);
}

.btn-outline:hover {
  border-color: #fff;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-on-light {
  border: 2px solid var(--c-primary);
  color: var(--c-primary);
}

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

.tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-primary);
  background: var(--c-primary-light);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.3px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--c-primary);
}

.link-arrow::after {
  content: '→';
  transition: transform 0.2s ease;
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
  z-index: 100;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--c-primary);
}

.brand svg {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.brand:hover {
  color: var(--c-primary);
}

.main-nav {
  display: none;
}

.nav-cta {
  display: none;
}

.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  transition: background 0.2s ease;
}

.menu-toggle:hover {
  background: rgba(10, 92, 66, 0.08);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
  stroke: var(--c-text);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--c-surface);
  z-index: 500;
  display: flex;
  flex-direction: column;
  padding: 88px 28px 28px;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

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

.mobile-menu a {
  font-size: 1.25rem;
  font-weight: 700;
  padding: 18px 0;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.mobile-menu .sub-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 0 8px 16px;
}

.mobile-menu .sub-links a {
  font-size: 1rem;
  font-weight: 500;
  padding: 12px 0;
  border-bottom: none;
  color: var(--c-primary);
}

.mobile-menu .sub-links a::before {
  content: '·';
  margin-right: 8px;
  color: var(--c-accent);
  font-weight: 800;
}

.mobile-menu-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(10, 92, 66, 0.08);
}

.mobile-menu-close svg {
  width: 24px;
  height: 24px;
  stroke: var(--c-text);
}

/* Mobile Bottom Tab */
.mobile-tab {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  display: flex;
  z-index: 400;
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.mobile-tab a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 11px;
  font-weight: 600;
  color: var(--c-muted);
  transition: color 0.2s ease;
}

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

.mobile-tab a svg {
  width: 20px;
  height: 20px;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11, 57, 41, 0.88) 0%, rgba(10, 92, 66, 0.72) 45%, rgba(11, 57, 41, 0.45) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 100%;
  padding: 0 20px;
}

.hero h1 {
  font-size: var(--fs-hero);
  color: #fff;
  margin-bottom: 20px;
  position: relative;
  padding-left: 20px;
}

.hero h1::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.1em;
  bottom: 0.1em;
  width: 6px;
  background: var(--c-accent);
  border-radius: var(--radius-pill);
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.95);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-metric {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 32px;
  padding: 14px 22px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  backdrop-filter: blur(4px);
}

.hero-metric svg {
  width: 20px;
  height: 20px;
  color: var(--c-accent);
}

/* Services */
.services {
  background: var(--c-surface);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  display: flex;
  flex-direction: column;
}

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

.service-card-img {
  overflow: hidden;
  position: relative;
}

.service-card-img img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.service-card:hover .service-card-img img {
  transform: scale(1.03);
}

.service-card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.service-card-body h3 {
  font-size: var(--fs-card);
}

.service-card-body p {
  color: var(--c-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  flex: 1;
}

.service-card-lg {
  grid-column: span 12;
  flex-direction: column;
}

.service-card-sm {
  grid-column: span 12;
}

.service-card-wide {
  grid-column: span 12;
  flex-direction: column;
}

/* Stats */
.stats {
  background: var(--c-primary-dark);
  padding: var(--spacing-section) 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border: 60px solid rgba(255, 255, 255, 0.03);
  border-radius: 50%;
  top: -100px;
  right: -100px;
}

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

.stats-grid.extra-stats {
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item {
  border-left: 4px solid var(--c-accent);
  padding-left: 20px;
}

.stat-label {
  display: block;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 4px;
  font-weight: 500;
}

.stat-num {
  font-size: var(--fs-hero);
  color: var(--c-accent);
  font-weight: 800;
  line-height: 1.2;
}

/* Cases */
.cases {
  background: var(--c-bg);
}

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

.case-main {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  display: block;
  box-shadow: var(--shadow-sm);
}

.case-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.case-main:hover img {
  transform: scale(1.03);
}

.case-main .case-info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px;
  background: linear-gradient(to top, rgba(8, 59, 45, 0.85), transparent);
  color: #fff;
}

.case-main .case-info h3 {
  color: #fff;
  font-size: 1.4rem;
  margin: 8px 0 6px;
}

.case-main .case-info p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
}

.cases-sub {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.case-card {
  display: flex;
  flex-direction: column;
  background: var(--c-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  border: 1px solid var(--c-border);
}

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

.case-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.case-card .case-info {
  padding: 20px;
}

.case-card .case-info h3 {
  font-size: 1.1rem;
  margin: 8px 0 4px;
}

.case-card .case-info p {
  color: var(--c-muted);
  font-size: 0.9rem;
}

/* Solutions */
.solutions {
  background: var(--c-surface);
}

.solution-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 48px;
}

.solution-block:last-child {
  margin-bottom: 0;
}

.solution-text {
  padding: 0 12px;
}

.solution-text h3 {
  font-size: var(--fs-section);
  margin-bottom: 16px;
}

.solution-text p {
  color: var(--c-muted);
  font-size: 1.02rem;
  margin-bottom: 24px;
  line-height: 1.8;
}

.solution-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.solution-img img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

/* News */
.news {
  background: var(--c-bg);
}

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

.news-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
  position: relative;
}

.news-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--c-accent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.news-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--c-primary-light);
}

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

.news-card-link {
  display: flex;
  gap: 20px;
  padding: 20px;
  align-items: center;
}

.news-info {
  flex: 1;
  min-width: 0;
}

.news-cat {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-primary);
  background: var(--c-primary-light);
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}

.news-info h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-info p {
  color: var(--c-muted);
  font-size: 0.9rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 1.6;
  margin-bottom: 10px;
}

.news-date {
  font-size: 12px;
  color: var(--c-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-date::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--c-accent);
  border-radius: 50%;
  display: inline-block;
}

.news-thumb {
  width: 160px;
  height: 100px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
}

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

.news-empty {
  text-align: center;
  padding: 60px 20px;
  background: var(--c-surface);
  border-radius: var(--radius-md);
  border: 1px dashed var(--c-border);
}

.news-empty svg {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--c-muted);
}

.news-empty p {
  color: var(--c-muted);
  font-size: 1.1rem;
}

/* FAQ */
.faq {
  background: var(--c-surface);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 0 20px;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.faq-item.active {
  border-color: var(--c-primary-light);
  background: #F9FCFB;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-text);
  text-align: left;
  gap: 16px;
}

.faq-icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: 50%;
  background: var(--c-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: background 0.3s ease;
}

.faq-icon::before {
  content: '';
  width: 10px;
  height: 2px;
  background: var(--c-primary);
  border-radius: 2px;
}

.faq-icon::after {
  content: '';
  width: 2px;
  height: 10px;
  background: var(--c-primary);
  border-radius: 2px;
  position: absolute;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  background: var(--c-accent);
}

.faq-item.active .faq-icon::before {
  background: #fff;
}

.faq-item.active .faq-icon::after {
  transform: rotate(90deg);
  background: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0;
  color: var(--c-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding-bottom: 20px;
}

/* Contact */
.contact {
  background: var(--c-bg);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--c-surface);
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border);
}

.contact-info-item svg {
  width: 22px;
  height: 22px;
  color: var(--c-accent);
  flex-shrink: 0;
}

.contact-info-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-info-item p {
  color: var(--c-muted);
  font-size: 0.92rem;
}

.contact-form {
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
}

.contact-form label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 6px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  height: 48px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  margin-bottom: 18px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  color: var(--c-text);
}

.contact-form textarea {
  height: 120px;
  padding-top: 12px;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(242, 120, 30, 0.15);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--c-muted);
}

.contact-form .btn {
  width: 100%;
}

/* CTA Strip */
.cta-strip {
  background: var(--c-accent);
  padding: 48px 0;
  color: #fff;
  text-align: center;
}

.cta-strip h2 {
  color: #fff;
  font-size: var(--fs-section);
  margin-bottom: 16px;
}

.cta-strip p {
  max-width: 560px;
  margin: 0 auto 24px;
  opacity: 0.95;
}

.cta-strip .btn-outline {
  border-color: #fff;
  color: #fff;
}

.cta-strip .btn-outline:hover {
  background: #fff;
  color: var(--c-accent);
}

/* Footer */
.site-footer {
  background: var(--c-primary-dark);
  color: rgba(255, 255, 255, 0.75);
  padding-top: 60px;
  padding-bottom: 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.footer-brand .brand {
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  padding: 6px 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
}

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

.footer-contact p {
  padding: 6px 0;
  font-size: 0.95rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
}

/* Drawer */
.service-drawer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--c-surface);
  border-radius: 20px 20px 0 0;
  padding: 24px 24px 32px;
  z-index: 600;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.15);
  max-height: 80vh;
  overflow-y: auto;
}

.service-drawer.open {
  transform: translateY(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-border);
}

.drawer-header span {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--c-text);
}

.drawer-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(10, 92, 66, 0.08);
  font-size: 1rem;
  color: var(--c-text);
  transition: background 0.2s ease;
}

.drawer-close:hover {
  background: rgba(10, 92, 66, 0.15);
}

.service-drawer a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 12px;
  border-bottom: 1px solid var(--c-border);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--c-text);
  transition: background 0.2s ease, color 0.2s ease;
}

.service-drawer a:hover {
  background: var(--c-primary-light);
  color: var(--c-primary);
}

.service-drawer a:last-child {
  border-bottom: none;
}

.service-drawer a svg {
  width: 20px;
  height: 20px;
  color: var(--c-accent);
}

/* Overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 59, 45, 0.5);
  z-index: 550;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Responsive */
@media (min-width: 768px) {
  body {
    padding-bottom: 0;
  }

  .section {
    padding: 80px 0;
  }

  .hero {
    padding: 120px 0 80px;
  }

  .hero-content {
    max-width: 60%;
    padding: 0;
  }

  .services-grid {
    gap: 24px;
  }

  .service-card-lg {
    grid-column: span 12;
    flex-direction: row;
  }

  .service-card-lg .service-card-img {
    width: 50%;
  }

  .service-card-lg .service-card-img img {
    aspect-ratio: auto;
    height: 100%;
  }

  .service-card-sm {
    grid-column: span 6;
  }

  .service-card-wide {
    grid-column: span 12;
    flex-direction: row;
  }

  .service-card-wide .service-card-img {
    width: 45%;
  }

  .service-card-wide .service-card-img img {
    aspect-ratio: auto;
    height: 100%;
  }

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

  .case-main {
    grid-column: 1 / -1;
  }

  .case-main .case-info {
    padding: 32px;
  }

  .case-main .case-info h3 {
    font-size: 1.6rem;
  }

  .cases-sub {
    grid-template-columns: 1fr 1fr;
  }

  .solution-block {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .solution-block.reverse {
    direction: rtl;
  }

  .solution-block.reverse > * {
    direction: ltr;
  }

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

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

  .news-card-link {
    padding: 24px;
  }

  .news-info h3 {
    font-size: 1.15rem;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: var(--spacing-section-lg) 0;
  }

  .container {
    padding: 0 32px;
  }

  .site-header .container {
    gap: 32px;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
    margin-left: auto;
  }

  .nav-cta {
    display: inline-flex;
    margin-left: 8px;
  }

  .menu-toggle {
    display: none;
  }

  .main-nav a {
    font-size: 15px;
    color: var(--c-text);
    padding: 24px 0;
    position: relative;
    font-weight: 600;
  }

  .main-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 12px;
    width: 0;
    height: 4px;
    background: var(--c-accent);
    border-radius: var(--radius-pill);
    transition: width 0.25s ease;
  }

  .main-nav a:hover::after,
  .main-nav a.active::after {
    width: 100%;
  }

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

  .nav-dropdown {
    position: relative;
  }

  .nav-dropdown .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--c-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    border: 1px solid var(--c-border);
  }

  .nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .dropdown-menu a {
    display: block;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 14px;
  }

  .dropdown-menu a:hover {
    background: var(--c-primary-light);
    color: var(--c-primary);
  }

  .hero {
    align-items: center;
  }

  .hero-content {
    padding-left: 0;
  }

  .service-card-lg {
    grid-column: span 7;
  }

  .service-card-sm {
    grid-column: span 5;
  }

  .service-card-wide {
    grid-column: span 12;
  }

  .stats {
    padding: 96px 0;
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
  }

  .stats-grid.extra-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .cases-grid {
    grid-template-columns: 1.2fr 1fr;
  }

  .case-main {
    grid-column: auto;
    aspect-ratio: auto;
  }

  .case-main img {
    height: 100%;
  }

  .cases-sub {
    grid-template-columns: 1fr;
  }

  .case-card {
    flex-direction: row;
    align-items: stretch;
  }

  .case-card img {
    width: 50%;
    aspect-ratio: auto;
  }

  .case-card .case-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .solution-block {
    gap: 80px;
  }

  .mobile-tab {
    display: none;
  }
}

@media (min-width: 1200px) {
  .main-nav {
    gap: 36px;
  }
}

@media (max-width: 767px) {
  .hero {
    min-height: 90vh;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .news-card-link {
    flex-direction: column;
    align-items: flex-start;
  }

  .news-thumb {
    width: 100%;
    height: 120px;
  }

  .case-main .case-info {
    padding: 20px;
  }

  .case-main .case-info h3 {
    font-size: 1.2rem;
  }

  .contact-form {
    padding: 20px;
  }

  .service-drawer {
    padding: 20px 20px 28px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .stat-num {
    font-size: 1.6rem;
  }

  .stat-label {
    font-size: 0.85rem;
  }

  .hero-buttons .btn {
    padding: 14px 20px;
    font-size: 0.95rem;
  }

  .news-info h3 {
    font-size: 1rem;
  }
}

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

/* Accessibility */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--c-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* roulang page: article */
:root {
  --c-primary: #0A5C42;
  --c-primary-light: #C9E8D8;
  --c-primary-dark: #083B2D;
  --c-accent: #F2781E;
  --c-bg: #F4F6F5;
  --c-surface: #FFFFFF;
  --c-text: #1F2731;
  --c-muted: #6B7A82;
  --c-border: #E1E7E4;
  --fs-hero: clamp(2rem, 4.5vw, 3.2rem);
  --fs-section: clamp(1.6rem, 2.8vw, 2.2rem);
  --fs-card: 1.125rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(11,57,41,0.06);
  --shadow-md: 0 12px 32px rgba(11,57,41,0.12);
  --font-sans: -apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --container: 1200px;
  --space-section: 96px;
  --space-section-mobile: 56px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 56px;
}
img { max-width: 100%; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--c-accent); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 28px; border-radius: var(--radius-pill);
  font-size: 15px; font-weight: 600; line-height: 1.4;
  transition: all .3s ease; border: 2px solid transparent;
  text-decoration: none;
}
.btn-primary { background: var(--c-accent); color: #fff; }
.btn-primary:hover { background: #e0660f; color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(242,120,30,0.28); }
.btn-outline { background: transparent; border-color: var(--c-primary); color: var(--c-primary); }
.btn-outline:hover { background: var(--c-primary); color: #fff; transform: translateY(-2px); }
.btn-light { background: var(--c-surface); color: var(--c-primary); }
.btn-light:hover { background: var(--c-primary-light); color: var(--c-primary); transform: translateY(-2px); }
.btn-ghost-light { background: transparent; border-color: rgba(255,255,255,0.85); color: #fff; }
.btn-ghost-light:hover { background: rgba(255,255,255,0.12); color: #fff; }
.btn-lg { padding: 15px 40px; font-size: 16px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 22px; font-weight: 800; color: var(--c-primary);
  text-decoration: none; letter-spacing: 0.5px;
}
.brand:hover { color: var(--c-primary); }
.brand svg { width: 34px; height: 34px; flex-shrink: 0; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav > a {
  position: relative; font-size: 15px; font-weight: 500; color: var(--c-text);
  padding: 8px 2px; text-decoration: none; transition: color .25s ease;
}
.main-nav > a::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 0; height: 3px; border-radius: 3px;
  background: var(--c-accent); transition: width .3s ease;
}
.main-nav > a:hover { color: var(--c-primary); }
.main-nav > a:hover::after { width: 100%; }
.main-nav > a.active { color: var(--c-primary); font-weight: 700; }
.main-nav > a.active::after { width: 100%; }
.nav-dropdown { position: relative; }
.nav-dropdown-toggle { position: relative; font-size: 15px; font-weight: 500; color: var(--c-text); padding: 8px 2px; text-decoration: none; cursor: pointer; transition: color .25s ease; }
.nav-dropdown-toggle::after {
  content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 3px;
  border-radius: 3px; background: var(--c-accent); transition: width .3s ease;
}
.nav-dropdown-toggle:hover { color: var(--c-primary); }
.nav-dropdown-toggle:hover::after { width: 100%; }
.dropdown-menu {
  position: absolute; top: calc(100% + 18px); left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: var(--c-surface); border-radius: var(--radius-md);
  box-shadow: var(--shadow-md); padding: 10px; min-width: 180px;
  opacity: 0; visibility: hidden; transition: all .3s ease;
  border: 1px solid var(--c-border);
}
.dropdown-menu::before {
  content: ''; position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  border: 7px solid transparent; border-bottom-color: var(--c-border);
}
.dropdown-menu a {
  display: block; padding: 10px 18px; border-radius: var(--radius-sm);
  color: var(--c-text); font-size: 14px; text-decoration: none;
  transition: all .2s ease; white-space: nowrap;
}
.dropdown-menu a:hover { background: var(--c-primary-light); color: var(--c-primary); }
.nav-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.header-contact { display: flex; align-items: center; gap: 12px; }
.header-contact .btn { padding: 9px 22px; font-size: 14px; }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; align-items: center; justify-content: center; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--c-text); border-radius: 2px; position: relative; transition: background .2s; }
.nav-toggle span::before, .nav-toggle span::after { content: ''; position: absolute; left: 0; width: 20px; height: 2px; background: var(--c-text); border-radius: 2px; transition: all .3s; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open span::after { top: 0; transform: rotate(-45deg); }

/* Mobile menu drawer */
.mobile-menu {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: var(--c-primary-dark); opacity: 0; visibility: hidden;
  transition: all .35s ease;
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu-inner {
  display: flex; flex-direction: column; justify-content: center;
  padding: 40px 32px; height: 100%;
}
.mobile-menu .brand { color: #fff; margin-bottom: 40px; }
.mobile-menu-links { display: flex; flex-direction: column; gap: 8px; }
.mobile-menu-links a {
  color: rgba(255,255,255,0.9); font-size: 22px; font-weight: 600;
  padding: 16px 4px; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.12);
  transition: all .25s;
}
.mobile-menu-links a:hover { color: var(--c-accent); padding-left: 8px; }
.mobile-menu-links .sub-links { display: flex; flex-direction: column; padding-left: 20px; }
.mobile-menu-links .sub-links a { font-size: 16px; font-weight: 400; border-bottom: none; padding: 10px 4px; }
.mobile-menu-close { position: absolute; top: 24px; right: 24px; width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 22px; }

/* Mobile Tabbar */
.mobile-tabbar {
  display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 150;
  background: var(--c-surface); border-top: 1px solid var(--c-border);
  height: 56px;
}
.tab-item {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; font-size: 11px; color: var(--c-muted);
  text-decoration: none; transition: color .2s;
}
.tab-item svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tab-item.active, .tab-item:hover { color: var(--c-accent); }

/* Service Drawer */
.service-drawer {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 220;
  background: var(--c-surface); border-radius: 20px 20px 0 0;
  box-shadow: 0 -8px 40px rgba(0,0,0,0.18);
  transform: translateY(100%); transition: transform .35s cubic-bezier(0.22,1,0.36,1);
  max-height: 68vh; overflow-y: auto;
}
.service-drawer.open { transform: translateY(0); }
.service-drawer-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px 12px; border-bottom: 1px solid var(--c-border);
}
.service-drawer-header h3 { font-size: 17px; color: var(--c-primary); }
.service-drawer-close { width: 32px; height: 32px; border-radius: 50%; background: var(--c-bg); font-size: 18px; color: var(--c-muted); display: flex; align-items: center; justify-content: center; }
.service-drawer-list { padding: 16px 24px 28px; display: flex; flex-direction: column; gap: 8px; }
.service-drawer-list a {
  display: flex; align-items: center; gap: 12px; padding: 16px 16px;
  background: var(--c-bg); border-radius: var(--radius-md);
  color: var(--c-text); font-weight: 500; text-decoration: none;
  transition: all .25s;
}
.service-drawer-list a:hover { background: var(--c-primary-light); color: var(--c-primary); }
.service-drawer-list a svg { width: 22px; height: 22px; stroke: var(--c-primary); fill: none; stroke-width: 1.8; }
.drawer-backdrop {
  position: fixed; inset: 0; background: rgba(8,59,45,0.5);
  z-index: 210; opacity: 0; visibility: hidden; transition: all .3s;
}
.drawer-backdrop.open { opacity: 1; visibility: visible; }

/* Article page */
.article-page { padding-top: 20px; }
.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  font-size: 13px; color: var(--c-muted); margin-bottom: 32px;
}
.breadcrumb a { color: var(--c-muted); text-decoration: none; transition: color .2s; }
.breadcrumb a:hover { color: var(--c-accent); }
.breadcrumb .sep { color: #B4C4BE; }
.breadcrumb .current { color: var(--c-text); font-weight: 500; }

.article-detail {
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--c-border);
  padding: clamp(28px, 6vw, 60px);
  max-width: 860px;
  margin: 0 auto 48px;
}
.article-detail h1 {
  font-size: var(--fs-section);
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-primary-dark);
  margin-bottom: 20px;
}
.article-meta {
  display: flex; align-items: center; flex-wrap: wrap; gap: 16px;
  padding-bottom: 24px; margin-bottom: 32px;
  border-bottom: 1px solid var(--c-border);
}
.badge {
  display: inline-flex; align-items: center; padding: 5px 14px;
  background: var(--c-primary-light); color: var(--c-primary);
  border-radius: var(--radius-pill); font-size: 13px; font-weight: 600;
}
.meta-item {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; color: var(--c-muted);
}
.meta-item svg { width: 16px; height: 16px; stroke: #9DB0A8; fill: none; stroke-width: 2; stroke-linecap: round; }

.article-content {
  font-size: 16.5px; line-height: 1.85; color: #2A333C;
}
.article-content > p:first-of-type {
  font-size: 18px; color: #37434D;
  line-height: 1.8; margin-bottom: 24px;
}
.article-content h2 {
  font-size: 24px; font-weight: 700; color: var(--c-primary-dark);
  margin: 36px 0 16px; padding-left: 14px; border-left: 4px solid var(--c-accent);
}
.article-content h3 {
  font-size: 20px; font-weight: 700; color: var(--c-primary);
  margin: 28px 0 14px;
}
.article-content p { margin-bottom: 20px; }
.article-content a { color: var(--c-accent); text-decoration: underline; text-underline-offset: 3px; }
.article-content ul, .article-content ol { margin: 0 0 22px 24px; }
.article-content li { margin-bottom: 8px; }
.article-content blockquote {
  background: #F0F7F3; border-left: 4px solid var(--c-primary);
  padding: 18px 22px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0; color: var(--c-text);
}
.article-content blockquote p { margin: 0; }
.article-content img { border-radius: var(--radius-md); margin: 28px auto; box-shadow: var(--shadow-sm); }
.article-content table {
  width: 100%; border-collapse: collapse; margin: 24px 0;
  font-size: 15px;
}
.article-content th {
  background: var(--c-primary); color: #fff; text-align: left;
  padding: 12px 16px; font-weight: 600;
}
.article-content td { padding: 12px 16px; border-bottom: 1px solid var(--c-border); }
.article-content tr:nth-child(even) td { background: #F9FCFB; }
.article-content code {
  background: #EEF2F0; padding: 3px 8px; border-radius: 6px;
  font-size: 14px; font-family: 'SFMono-Regular', Consolas, monospace;
}
.article-content pre {
  background: var(--c-primary-dark); color: #DFF2E9; padding: 20px 24px;
  border-radius: var(--radius-md); overflow-x: auto; margin: 24px 0;
}
.article-content pre code { background: none; color: inherit; padding: 0; }

.article-not-found {
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
  max-width: 680px; margin: 40px auto 80px; padding: 70px 48px;
  text-align: center;
}
.article-not-found svg { width: 60px; height: 60px; fill: none; stroke: var(--c-primary-light); stroke-width: 1.6; margin: 0 auto 24px; }
.article-not-found h1 { font-size: 28px; color: var(--c-primary-dark); margin-bottom: 12px; }
.article-not-found p { color: var(--c-muted); margin-bottom: 28px; }

/* Related */
.related-section { padding: var(--space-section-mobile) 0; }
.related-section .section-head { margin-bottom: 40px; }
.related-section .section-head h2 {
  font-size: var(--fs-section); color: var(--c-primary-dark);
  font-weight: 800; margin-bottom: 8px;
}
.related-section .section-head p { color: var(--c-muted); }
.related-grid { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 40px; }
.news-card {
  display: flex; background: var(--c-surface);
  border: 1px solid var(--c-border); border-radius: var(--radius-md);
  overflow: hidden; box-shadow: var(--shadow-sm);
  transition: all .3s ease; position: relative;
  text-decoration: none; color: var(--c-text);
}
.news-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--c-accent); transform: scaleX(0);
  transform-origin: left; transition: transform .35s ease;
  z-index: 2;
}
.news-card:hover { box-shadow: var(--shadow-md); border-color: var(--c-primary); color: var(--c-text); transform: translateY(-3px); }
.news-card:hover::before { transform: scaleX(1); }
.news-card-img { width: 140px; min-height: 100px; flex-shrink: 0; overflow: hidden; background: var(--c-primary-light); }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.news-card:hover .news-card-img img { transform: scale(1.04); }
.news-card-body { flex: 1; padding: 18px 20px; display: flex; flex-direction: column; gap: 8px; }
.news-card-body .tag { font-size: 12px; color: var(--c-primary); font-weight: 600; background: var(--c-primary-light); display: inline-block; padding: 3px 10px; border-radius: var(--radius-pill); align-self: flex-start; }
.news-card-body h3 { font-size: var(--fs-card); font-weight: 700; line-height: 1.4; color: var(--c-text); }
.news-card-body p { font-size: 14px; color: var(--c-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-body .meta-line { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--c-muted); margin-top: auto; }
.news-card-body .meta-line .read-more { margin-left: auto; color: var(--c-accent); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.back-link { text-align: center; margin-top: 20px; }

/* CTA */
.cta-section {
  background: var(--c-primary-dark); padding: 72px 0; position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; top: -80px; right: -40px; width: 280px; height: 280px;
  border-radius: 50%; border: 40px solid rgba(255,255,255,0.04);
}
.cta-section::after {
  content: ''; position: absolute; bottom: -120px; left: 20%;
  width: 220px; height: 220px; border-radius: 50%;
  border: 30px solid rgba(242,120,30,0.08);
}
.cta-inner { position: relative; z-index: 1; text-align: center; max-width: 680px; margin: 0 auto; }
.cta-inner h2 { color: #fff; font-size: var(--fs-section); font-weight: 800; margin-bottom: 14px; }
.cta-inner p { color: rgba(255,255,255,0.78); font-size: 16px; margin-bottom: 32px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.site-footer {
  background: var(--c-primary-dark);
  color: rgba(255,255,255,0.75);
  padding: 72px 0 28px;
}
.site-footer .brand { color: #fff; margin-bottom: 18px; }
.site-footer .brand:hover { color: #fff; }
.site-footer p { color: rgba(255,255,255,0.65); font-size: 14px; line-height: 1.7; }
.footer-grid {
  display: grid; grid-template-columns: 1fr;
  gap: 40px; margin-bottom: 48px;
}
.footer-brand p { margin-top: 16px; max-width: 320px; }
.footer-links h4, .footer-contact h4 {
  color: #ffffff; font-size: 16px; font-weight: 700; margin-bottom: 16px;
}
.footer-links a {
  display: block; color: rgba(255,255,255,0.65); font-size: 14px;
  padding: 5px 0; text-decoration: none; transition: color .25s;
}
.footer-links a:hover { color: var(--c-accent); }
.footer-contact p { margin-bottom: 8px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px; text-align: center;
}
.footer-bottom p { font-size: 13px; }

/* Responsive */
@media (min-width: 768px) {
  .related-grid { grid-template-columns: repeat(3, 1fr); }
  .news-card { flex-direction: column; }
  .news-card-img { width: 100%; height: 130px; }
  .news-card-body { min-height: 190px; }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 48px; }
  .article-page { padding-top: 40px; }
  .related-section { padding: var(--space-section) 0; }
  .cta-section { padding: 96px 0; }
}

@media (min-width: 1024px) {
  body { padding-bottom: 0; }
  .nav-toggle, .mobile-tabbar { display: none; }
}

@media (max-width: 1023px) {
  .main-nav, .header-contact .btn { display: none; }
  .nav-toggle { display: inline-flex; }
  .mobile-menu { display: flex; }
  .mobile-tabbar { display: flex; }
}

@media (max-width: 767px) {
  .article-detail { padding: 24px 20px; margin-bottom: 32px; }
  .article-detail h1 { font-size: 22px; }
  .article-meta { gap: 10px; font-size: 13px; }
  .btn-lg { padding: 13px 32px; font-size: 15px; }
  .cta-section { padding: 56px 0; }
  .site-footer { padding: 56px 0 90px; }
  .breadcrumb { margin-bottom: 20px; }
  .news-card-img { width: 108px; min-height: 88px; }
  .news-card-body { padding: 14px 16px; }
  .news-card-body h3 { font-size: 15px; }
  .news-card-body p { display: none; }
  .article-content { font-size: 15.5px; }
  .article-content h2 { font-size: 20px; }
  .article-content h3 { font-size: 17px; }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .mobile-tabbar { display: flex; }
  body { padding-bottom: 56px; }
  .news-card { flex-direction: row; }
  .news-card-img { width: 140px; height: auto; min-height: 110px; }
}

@media (max-width: 520px) {
  .footer-grid { gap: 28px; }
  .article-meta { flex-direction: row; flex-wrap: wrap; }
  .cta-btns { flex-direction: column; align-items: stretch; }
  .cta-btns .btn { width: 100%; }
}

/* roulang page: category1 */
:root {
  --c-primary: #0A5C42;
  --c-primary-light: #C9E8D8;
  --c-primary-dark: #083B2D;
  --c-accent: #F2781E;
  --c-bg: #F4F6F5;
  --c-surface: #FFFFFF;
  --c-text: #1F2731;
  --c-muted: #6B7A82;
  --c-border: #E1E7E4;
  --fs-hero: clamp(2rem, 4.5vw, 3.4rem);
  --fs-section: clamp(1.5rem, 2.8vw, 2.2rem);
  --fs-card: 1.125rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(11,57,41,0.06);
  --shadow-md: 0 12px 32px rgba(11,57,41,0.12);
  --shadow-lg: 0 20px 48px rgba(11,57,41,0.18);
  --container-max: 1200px;
  --header-h: 72px;
  --tab-h: 56px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--c-text);
  background-color: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  padding-bottom: var(--tab-h);
}

@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
  }
}

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

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

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

input, textarea {
  font-family: inherit;
  font-size: 1rem;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }
}

.section-padding {
  padding: clamp(56px, 8vw, 96px) 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto clamp(40px, 5vw, 64px);
}

.section-header h2 {
  font-size: var(--fs-section);
  font-weight: 800;
  line-height: 1.25;
  margin: 12px 0 16px;
  color: var(--c-primary-dark);
}

.section-header p {
  color: var(--c-muted);
  font-size: 1.05rem;
}

.section-tag {
  display: inline-block;
  background: var(--c-primary-light);
  color: var(--c-primary);
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius-pill);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition: all 0.28s ease;
  border: 2px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-accent {
  background: var(--c-accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(242,120,30,0.3);
}

.btn-accent:hover {
  background: #E06A10;
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(242,120,30,0.35);
}

.btn-outline-light {
  background: transparent;
  border-color: rgba(255,255,255,0.7);
  color: #fff;
}

.btn-outline-light:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-color: #fff;
  transform: translateY(-3px);
}

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

.btn-outline:hover {
  background: var(--c-primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(11,57,41,0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--c-primary-dark);
  text-decoration: none;
  flex-shrink: 0;
}

.brand svg {
  width: 34px;
  height: 34px;
}

.brand span {
  letter-spacing: 0.5px;
}

.brand:hover {
  color: var(--c-primary);
}

.main-nav {
  display: none;
  align-items: center;
  gap: 8px;
}

.main-nav > a,
.nav-dropdown-toggle {
  padding: 10px 16px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--c-text);
  border-radius: var(--radius-sm);
  transition: color 0.25s, background 0.25s;
  text-decoration: none;
}

.main-nav > a:hover,
.nav-dropdown-toggle:hover {
  color: var(--c-primary);
  background: rgba(10,92,66,0.06);
}

.main-nav > a.active,
.nav-dropdown-toggle.active {
  color: var(--c-primary);
  font-weight: 600;
  position: relative;
}

.main-nav > a.active::after,
.nav-dropdown-toggle.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 16px;
  right: 16px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--c-accent);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.nav-dropdown-toggle::after {
  content: '';
  width: 6px;
  height: 6px;
  border-right: 2px solid var(--c-muted);
  border-bottom: 2px solid var(--c-muted);
  transform: rotate(45deg);
  margin-left: 2px;
  transition: transform 0.3s;
}

.nav-dropdown:hover .nav-dropdown-toggle::after {
  transform: rotate(225deg);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--c-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 180px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.28s ease;
  z-index: 100;
  border: 1px solid var(--c-border);
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--c-text);
  transition: background 0.2s, color 0.2s;
}

.dropdown-menu a:hover {
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-weight: 600;
}

.dropdown-menu a.active {
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-weight: 600;
}

.header-cta {
  display: none;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  background: var(--c-accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.25s;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(242,120,30,0.25);
}

.header-cta:hover {
  background: #E06A10;
  color: #fff;
  transform: translateY(-2px);
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: transparent;
  transition: background 0.2s;
  z-index: 1001;
}

.nav-toggle:hover {
  background: rgba(10,92,66,0.05);
}

.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--c-primary-dark);
  transition: all 0.3s 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);
}

@media (min-width: 1024px) {
  .main-nav {
    display: flex;
  }
  .header-cta {
    display: inline-flex;
    align-items: center;
  }
  .nav-toggle {
    display: none;
  }
}

/* ===== Mobile Menu (full-screen drawer) ===== */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(16px);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  padding: 80px 24px 40px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
  overflow-y: auto;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--c-border);
}

.mobile-menu-close {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 22px;
  color: var(--c-text);
  background: var(--c-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
}

.mobile-menu nav a,
.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 12px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-text);
  border-radius: var(--radius-sm);
  transition: background 0.2s, color 0.2s;
  text-decoration: none;
  background: transparent;
  width: 100%;
  text-align: left;
}

.mobile-menu nav a:hover,
.mobile-menu-toggle:hover {
  background: var(--c-primary-light);
  color: var(--c-primary);
}

.mobile-menu nav a.active {
  color: var(--c-primary);
  background: var(--c-primary-light);
}

.mobile-submenu {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease;
  padding-left: 16px;
}

.mobile-submenu.open {
  max-height: 300px;
}

.mobile-submenu a {
  font-size: 0.95rem;
  font-weight: 400;
  padding: 12px 12px;
  color: var(--c-muted);
}

.mobile-submenu a.active {
  color: var(--c-primary);
  font-weight: 600;
}

@media (min-width: 1024px) {
  .mobile-menu {
    display: none;
  }
}

/* ===== Mobile Bottom Tabbar ===== */
.mobile-tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: var(--tab-h);
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: stretch;
  z-index: 1000;
}

.tabbar-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 0.7rem;
  color: var(--c-muted);
  text-decoration: none;
  transition: color 0.2s;
  background: transparent;
  padding: 6px 0 8px;
}

.tabbar-item svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tabbar-item.active,
.tabbar-item:hover {
  color: var(--c-accent);
}

@media (min-width: 1024px) {
  .mobile-tabbar {
    display: none;
  }
}

/* ===== Service Category Drawer ===== */
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 1500;
  visibility: hidden;
  opacity: 0;
  transition: all 0.3s ease;
}

.drawer-overlay.open {
  visibility: visible;
  opacity: 1;
}

.drawer-mask {
  position: absolute;
  inset: 0;
  background: rgba(8,59,45,0.45);
  backdrop-filter: blur(2px);
}

.drawer-panel {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--c-surface);
  border-radius: 20px 20px 0 0;
  padding: 24px 20px 32px;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.drawer-overlay.open .drawer-panel {
  transform: translateY(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-border);
}

.drawer-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-primary-dark);
}

.drawer-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 20px;
  background: var(--c-bg);
  color: var(--c-text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.drawer-close:hover {
  background: var(--c-primary-light);
  color: var(--c-primary);
}

.drawer-panel nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.drawer-panel nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--c-bg);
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
  transition: all 0.25s;
}

.drawer-panel nav a:hover {
  background: var(--c-primary-light);
  color: var(--c-primary);
  transform: translateX(4px);
}

.drawer-panel nav a span:last-child {
  margin-left: auto;
  color: var(--c-muted);
  font-size: 0.85rem;
}

.drawer-panel nav a.active {
  background: var(--c-primary-light);
  color: var(--c-primary);
  border-left: 4px solid var(--c-accent);
}

@media (min-width: 1024px) {
  .drawer-overlay {
    display: none;
  }
}

/* ===== Category Hero ===== */
.category-hero {
  position: relative;
  min-height: 40vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 60px;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  isolation: isolate;
}

.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11,57,41,0.92) 0%, rgba(10,92,66,0.75) 45%, rgba(11,57,41,0.4) 100%);
  z-index: -1;
}

.category-hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 40px;
  background: var(--c-bg);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  z-index: 1;
  opacity: 0.9;
}

.category-hero-content {
  max-width: 640px;
  color: #fff;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 18px;
  backdrop-filter: blur(4px);
}

.category-hero h1 {
  font-size: var(--fs-hero);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.category-hero h1::after {
  content: '';
  display: block;
  width: 56px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--c-accent);
  margin-top: 14px;
}

.category-hero p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.9);
  max-width: 520px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ===== Breadcrumb ===== */
.breadcrumb-wrap {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  padding: 14px 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--c-muted);
}

.breadcrumb a {
  color: var(--c-muted);
  transition: color 0.2s;
}

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

.breadcrumb-sep {
  color: var(--c-border);
}

.breadcrumb .current {
  color: var(--c-primary);
  font-weight: 600;
}

/* ===== Category Intro ===== */
.category-intro {
  background: var(--c-surface);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 992px) {
  .intro-grid {
    grid-template-columns: 5fr 7fr;
    gap: 64px;
    align-items: center;
  }
}

.intro-content h2 {
  font-size: var(--fs-section);
  font-weight: 800;
  color: var(--c-primary-dark);
  line-height: 1.3;
  margin: 14px 0 20px;
}

.intro-content p {
  color: var(--c-muted);
  line-height: 1.9;
  font-size: 1.05rem;
}

.feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .feature-list {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--c-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border);
  transition: all 0.25s;
}

.feature-item:hover {
  border-color: var(--c-primary-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.feature-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--c-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--c-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-primary-dark);
  margin-bottom: 4px;
}

.feature-item p {
  font-size: var(--fs-small);
  color: var(--c-muted);
  line-height: 1.6;
  margin: 0;
}

/* ===== Sub Services Rows ===== */
.sub-services {
  background: var(--c-bg);
}

.service-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 48px;
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--c-border);
  transition: box-shadow 0.3s;
}

.service-row:last-child {
  margin-bottom: 0;
}

.service-row:hover {
  box-shadow: var(--shadow-md);
}

@media (min-width: 992px) {
  .service-row {
    grid-template-columns: 6fr 6fr;
    margin-bottom: 64px;
  }
}

.service-media {
  overflow: hidden;
  aspect-ratio: 4/3;
  min-height: 260px;
}

.service-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.service-row:hover .service-media img {
  transform: scale(1.04);
}

.service-content {
  padding: 32px 28px;
}

@media (min-width: 992px) {
  .service-content {
    padding: 40px 36px;
  }
  .service-row.reverse .service-content {
    order: -1;
  }
}

.service-label {
  display: inline-block;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: var(--fs-small);
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.service-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-primary-dark);
  margin-bottom: 12px;
  line-height: 1.35;
}

.service-content p {
  color: var(--c-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.service-points {
  list-style: none;
  margin-bottom: 20px;
}

.service-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 5px 0;
  font-size: 0.95rem;
  color: var(--c-text);
}

.service-points li::before {
  content: '';
  flex-shrink: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-accent);
  margin-top: 10px;
}

/* ===== Advantages 2+1 ===== */
.advantages {
  background: var(--c-primary-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.advantages::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px dashed rgba(255,255,255,0.1);
  z-index: 0;
}

.advantages .section-header h2 {
  color: #fff;
}

.advantages .section-header p {
  color: rgba(255,255,255,0.7);
}

.advantage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .advantage-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.advantage-item {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: all 0.3s;
}

.advantage-item:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-4px);
}

.advantage-item .adv-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: rgba(242,120,30,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.advantage-item .adv-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--c-accent);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.advantage-item h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}

.advantage-item p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
}

.advantage-wide {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(242,120,30,0.2) 0%, rgba(242,120,30,0.05) 100%);
  border: 1px solid rgba(242,120,30,0.3);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  transition: all 0.3s;
}

.advantage-wide:hover {
  background: linear-gradient(135deg, rgba(242,120,30,0.25) 0%, rgba(242,120,30,0.08) 100%);
  transform: translateY(-4px);
}

.adv-wide-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.adv-wide-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--c-accent);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.adv-wide-content {
  flex: 1;
  min-width: 240px;
}

.adv-wide-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}

.adv-wide-content p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--c-surface);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.3s;
}

.faq-item.open {
  border-color: var(--c-primary-light);
  background: #F9FCFB;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-text);
  text-align: left;
  background: transparent;
  transition: color 0.25s;
}

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

.faq-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 400;
  transition: all 0.35s;
  line-height: 1;
}

.faq-item.open .faq-icon {
  background: var(--c-accent);
  color: #fff;
  transform: rotate(135deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq-answer p {
  padding: 0 24px 22px;
  color: var(--c-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  padding: clamp(56px, 6vw, 80px) 0;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 2px dashed rgba(255,255,255,0.12);
}

.cta-banner::after {
  content: '';
  position: absolute;
  top: -40px;
  left: 10%;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.08);
}

.cta-inner {
  text-align: center;
  color: #fff;
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-inner h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-inner p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 28px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--c-primary-dark);
  color: rgba(255,255,255,0.7);
  padding: clamp(48px, 6vw, 72px) 0 0;
}

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

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
  }
}

.footer-brand .brand {
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand .brand svg circle {
  stroke: #C9E8D8;
}

.footer-brand .brand svg rect {
  fill: #C9E8D8;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-top: 16px;
  max-width: 320px;
  color: rgba(255,255,255,0.6);
}

.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-links h4::after,
.footer-contact h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--c-accent);
}

.footer-links a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  padding: 6px 0;
  transition: all 0.2s;
}

.footer-links a:hover {
  color: var(--c-accent);
  padding-left: 6px;
}

.footer-contact p {
  font-size: 0.9rem;
  padding: 6px 0;
  color: rgba(255,255,255,0.6);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

.footer-bottom a {
  color: rgba(255,255,255,0.4);
}

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

/* ===== Utility ===== */
.text-center {
  text-align: center;
}

.divider {
  border: 0;
  height: 1px;
  background: var(--c-border);
  margin: 48px 0;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--c-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--c-primary-light);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--c-primary);
}

/* ===== Responsive tweaks ===== */
@media (max-width: 767px) {
  .category-hero {
    padding-top: calc(var(--header-h) + 24px);
    padding-bottom: 44px;
  }
  .category-hero h1 {
    font-size: 2rem;
  }
  .category-hero p {
    font-size: 1rem;
  }
  .hero-actions .btn {
    width: 100%;
    padding: 14px 20px;
  }
  .service-row {
    grid-template-columns: 1fr;
  }
  .service-media {
    min-height: 200px;
  }
  .service-content {
    padding: 24px 20px;
  }
  .service-content h3 {
    font-size: 1.25rem;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-grid {
    gap: 32px;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .category-hero {
    padding-top: calc(var(--header-h) + 32px);
  }
  .service-media {
    min-height: 240px;
  }
}

@media (min-width: 1024px) {
  .service-row.reverse .service-media {
    order: 2;
  }
}

/* roulang page: category2 */
:root {
  --c-primary: #0A5C42;
  --c-primary-light: #C9E8D8;
  --c-primary-dark: #083B2D;
  --c-accent: #F2781E;
  --c-bg: #F4F6F5;
  --c-surface: #FFFFFF;
  --c-text: #1F2731;
  --c-muted: #6B7A82;
  --c-border: #E1E7E4;
  --fs-hero: clamp(2.2rem, 5vw, 3.6rem);
  --fs-section: clamp(1.8rem, 3vw, 2.4rem);
  --fs-card: 1.125rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(11,57,41,0.06);
  --shadow-md: 0 12px 32px rgba(11,57,41,0.12);
  --transition: all .3s ease;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  padding-bottom: 56px;
  min-height: 100vh;
}

img { max-width: 100%; display: block; object-fit: cover; }
a { color: var(--c-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--c-accent); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; outline: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 桌面顶部导航 */
.site-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
}

.site-header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--c-primary-dark);
  letter-spacing: .5px;
}
.brand:hover { color: var(--c-primary-dark); }
.brand svg { flex-shrink: 0; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav > a {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text);
  border-radius: 8px;
  position: relative;
}
.main-nav > a:hover { color: var(--c-primary); background: rgba(10,92,66,0.06); }
.main-nav > a.active { color: var(--c-primary); font-weight: 600; }
.main-nav > a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 4px;
  border-radius: 2px;
  background: var(--c-accent);
}

.nav-dropdown { position: relative; }
.nav-dropdown > .nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text);
  border-radius: 8px;
  cursor: pointer;
}
.nav-dropdown > .nav-dropdown-toggle:hover { color: var(--c-primary); background: rgba(10,92,66,0.06); }
.nav-dropdown > .nav-dropdown-toggle.active { color: var(--c-primary); font-weight: 600; }
.nav-dropdown > .nav-dropdown-toggle.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 4px;
  background: var(--c-accent);
  border-radius: 2px;
}
.nav-dropdown .dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--c-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 12px;
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  border: 1px solid var(--c-border);
  z-index: 120;
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.dropdown-menu a {
  display: block;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--c-text);
  font-weight: 500;
}
.dropdown-menu a:hover { background: var(--c-primary-light); color: var(--c-primary-dark); }
.dropdown-menu a.active { background: var(--c-primary-light); color: var(--c-primary-dark); font-weight: 600; }

.header-contact {
  display: flex;
  align-items: center;
  gap: 12px;
}

.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-pill);
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(10,92,66,.25); }
.btn-accent { background: var(--c-accent); color: #fff; }
.btn-accent:hover { background: #e0640a; color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(242,120,30,.3); }
.btn-outline { border-color: rgba(255,255,255,.85); color: #fff; background: transparent; }
.btn-outline:hover { border-color: var(--c-accent); color: var(--c-accent); background: rgba(255,255,255,.1); }
.btn-light { background: #fff; color: var(--c-primary-dark); }
.btn-light:hover { background: var(--c-primary-light); color: var(--c-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.15); }
.btn-sm { padding: 8px 20px; font-size: 14px; }

/* 移动端顶部 */
.mobile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 56px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
  padding: 0 16px;
}
.mobile-header .brand { font-size: 1.15rem; }

.hamburger {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10,92,66,0.08);
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-primary-dark);
  border-radius: 2px;
  margin: 2px 0;
  transition: var(--transition);
}
.hamburger:hover { background: rgba(10,92,66,0.15); }

/* 移动端全屏抽屉 */
.mobile-drawer {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 200;
  background: var(--c-surface);
  padding: 16px;
  transform: translateX(100%);
  transition: transform .35s ease;
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer .drawer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.drawer-close {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--c-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--c-text);
}
.mobile-drawer nav a {
  display: block;
  padding: 16px 12px;
  font-size: 18px;
  font-weight: 600;
  color: var(--c-text);
  border-radius: 12px;
  border-bottom: 1px solid rgba(0,0,0,0.04);
}
.mobile-drawer nav a:hover { background: var(--c-primary-light); color: var(--c-primary-dark); }
.mobile-drawer .drawer-submenu-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 16px 12px;
  font-size: 18px;
  font-weight: 600;
  color: var(--c-text);
  background: transparent;
  border-radius: 12px;
  border-bottom: 1px solid rgba(0,0,0,0.04);
}
.mobile-drawer .drawer-submenu-links {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
  padding-left: 16px;
}
.mobile-drawer .drawer-submenu-links.open { max-height: 260px; }
.mobile-drawer .drawer-submenu-links a { font-size: 15px; font-weight: 500; padding: 12px; }

/* 移动端底部Tab */
.mobile-tabbar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 150;
  display: flex;
  height: 56px;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  box-shadow: 0 -2px 12px rgba(11,57,41,0.06);
}
.mobile-tabbar .tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 11px;
  color: var(--c-muted);
  background: transparent;
  transition: var(--transition);
  padding: 0;
}
.mobile-tabbar .tab-item svg { width: 20px; height: 20px; }
.mobile-tabbar .tab-item.active { color: var(--c-accent); font-weight: 600; }
.mobile-tabbar .tab-item:hover { color: var(--c-primary); }

/* Hero */
.page-hero {
  position: relative;
  min-height: 42vh;
  display: flex;
  align-items: center;
  margin-top: 56px;
  background-size: cover;
  background-position: center;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11,57,41,.92) 0%, rgba(10,92,66,.78) 50%, rgba(11,57,41,.45) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 620px;
  padding: 48px 0;
}
.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.3);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 20px;
  color: #fff;
}
.hero-content h1 {
  font-size: var(--fs-hero);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #fff;
}
.hero-content h1 .accent-bar {
  display: inline-block;
  width: 10px;
  height: .7em;
  background: var(--c-accent);
  border-radius: 4px;
  margin-right: 8px;
  transform: translateY(2px);
}
.hero-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,.9);
  max-width: 480px;
  line-height: 1.75;
}
.hero-meta {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.hero-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: rgba(255,255,255,.12);
  border-radius: var(--radius-pill);
  font-size: 14px;
  color: #fff;
  backdrop-filter: blur(4px);
}

/* 面包屑 */
.breadcrumb {
  padding: 20px 0;
  font-size: 14px;
  color: var(--c-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--c-muted); }
.breadcrumb a:hover { color: var(--c-primary); }
.breadcrumb .current { color: var(--c-primary); font-weight: 500; }
.breadcrumb .sep { color: #c0c8c4; }

/* 区块通用 */
.section-label {
  display: inline-block;
  padding: 4px 14px;
  background: var(--c-primary-light);
  color: var(--c-primary-dark);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .5px;
  margin-bottom: 16px;
}

/* 分类简介 */
.category-intro {
  padding: 64px 0;
}
.intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
.intro-text h2 {
  font-size: var(--fs-section);
  font-weight: 800;
  color: var(--c-primary-dark);
  line-height: 1.25;
  margin-bottom: 16px;
}
.intro-text p {
  color: var(--c-muted);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 1.02rem;
}
.intro-features {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.intro-features li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  background: var(--c-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.intro-features li:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.intro-features .feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(10,92,66,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
}
.intro-features .feature-text h4 { font-size: 16px; font-weight: 700; color: var(--c-primary-dark); margin-bottom: 4px; }
.intro-features .feature-text p { font-size: 14px; color: var(--c-muted); margin: 0; line-height: 1.6; }

/* 子服务列表 */
.sub-services {
  padding: 64px 0;
  background: var(--c-surface);
}
.sub-services .section-head {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}
.sub-services .section-head h2 {
  font-size: var(--fs-section);
  color: var(--c-primary-dark);
  font-weight: 800;
  line-height: 1.25;
}
.sub-services .section-head p {
  color: var(--c-muted);
  margin-top: 12px;
}
.service-row {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 32px;
  background: var(--c-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--c-border);
  transition: var(--transition);
}
.service-row:hover { box-shadow: var(--shadow-md); border-color: transparent; }
.service-row-image {
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  position: relative;
}
.service-row-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.service-row:hover .service-row-image img { transform: scale(1.04); }
.service-row-content {
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.service-row-content .tag {
  align-self: flex-start;
  padding: 4px 14px;
  background: var(--c-primary-light);
  color: var(--c-primary-dark);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .5px;
  margin-bottom: 14px;
}
.service-row-content h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-primary-dark);
  margin-bottom: 10px;
  line-height: 1.3;
}
.service-row-content p {
  color: var(--c-muted);
  line-height: 1.75;
  margin-bottom: 18px;
}
.service-row-content .link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
  color: var(--c-primary);
}
.service-row-content .link-more:hover { color: var(--c-accent); gap: 10px; }

/* 优势点 */
.advantage-section {
  padding: 64px 0;
  background: var(--c-primary-dark);
  position: relative;
  overflow: hidden;
}
.advantage-section::before {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 2px dashed rgba(255,255,255,.12);
  pointer-events: none;
}
.advantage-section .section-head {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
  z-index: 2;
}
.advantage-section .section-head h2 {
  color: #fff;
  font-size: var(--fs-section);
  font-weight: 800;
}
.advantage-section .section-head p { color: rgba(255,255,255,.7); margin-top: 12px; }
.adv-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  position: relative;
  z-index: 2;
}
.adv-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
}
.adv-card:hover { background: rgba(255,255,255,.12); transform: translateY(-4px); }
.adv-card .adv-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--c-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: #fff;
}
.adv-card h3 { color: #fff; font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.adv-card p { color: rgba(255,255,255,.75); font-size: 14px; line-height: 1.7; }
.adv-card.adv-wide {
  background: linear-gradient(135deg, rgba(242,120,30,.3), rgba(242,120,30,.12));
  border-color: rgba(242,120,30,.35);
}
.adv-card.adv-wide .adv-icon { background: #fff; color: var(--c-accent); }

/* FAQ */
.faq-section {
  padding: 64px 0;
}
.faq-section .section-head {
  text-align: center;
  margin-bottom: 40px;
}
.faq-section .section-head h2 {
  font-size: var(--fs-section);
  color: var(--c-primary-dark);
  font-weight: 800;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active { border-color: var(--c-primary-light); background: #F9FCFB; box-shadow: var(--shadow-sm); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
  background: transparent;
  gap: 16px;
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--c-primary-light);
  color: var(--c-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition);
}
.faq-item.active .faq-icon { background: var(--c-accent); color: #fff; transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
  padding: 0 24px;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.75;
}
.faq-item.active .faq-answer { max-height: 320px; padding-bottom: 20px; }

/* CTA */
.cta-section {
  padding: 48px 0 80px;
}
.cta-box {
  position: relative;
  background: linear-gradient(120deg, var(--c-primary-dark) 0%, var(--c-primary) 70%);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  color: #fff;
  overflow: hidden;
}
.cta-box::after {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 2px dashed rgba(255,255,255,.15);
}
.cta-box h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 12px; position: relative; z-index: 1; }
.cta-box p { color: rgba(255,255,255,.85); max-width: 500px; margin: 0 auto 28px; position: relative; z-index: 1; }
.cta-box .btn-group { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; }

/* 页脚 */
.site-footer {
  background: var(--c-primary-dark);
  color: rgba(255,255,255,.8);
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .brand { color: #fff; font-size: 1.3rem; margin-bottom: 16px; }
.footer-brand .brand svg { width: 34px; height: 34px; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,.65); line-height: 1.75; max-width: 320px; }
.footer-links h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-links a {
  display: block;
  padding: 5px 0;
  color: rgba(255,255,255,.65);
  font-size: 14px;
}
.footer-links a:hover { color: var(--c-accent); }
.footer-contact h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.footer-contact p { font-size: 14px; color: rgba(255,255,255,.65); padding: 3px 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.45);
}

/* 服务抽屉 */
.service-drawer {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0,0,0,0.45);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.service-drawer.open { opacity: 1; visibility: visible; }
.drawer-panel {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--c-surface);
  border-radius: 20px 20px 0 0;
  padding: 24px 20px calc(24px + env(safe-area-inset-bottom));
  transform: translateY(100%);
  transition: transform .35s ease;
}
.service-drawer.open .drawer-panel { transform: translateY(0); }
.drawer-panel .drawer-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.drawer-panel .drawer-title h3 { font-size: 17px; font-weight: 700; color: var(--c-primary-dark); }
.drawer-panel .drawer-grip {
  width: 48px;
  height: 4px;
  border-radius: 2px;
  background: var(--c-border);
  margin: 0 auto 16px;
}
.drawer-panel a.drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 14px;
  border-radius: 12px;
  background: var(--c-bg);
  margin-bottom: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--c-text);
}
.drawer-panel a.drawer-link:hover { background: var(--c-primary-light); color: var(--c-primary-dark); }
.drawer-panel a.drawer-link.active { background: var(--c-primary); color: #fff; }
.drawer-panel .drawer-close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--c-bg);
  color: var(--c-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

/* 桌面响应式 */
@media (min-width: 768px) {
  .mobile-header { display: none; }
  .mobile-tabbar { display: none; }
  body { padding-bottom: 0; }
  .site-header { display: block; }
  .page-hero { margin-top: 72px; min-height: 40vh; }
  .intro-grid { grid-template-columns: 1fr 1fr; gap: 60px; }
  .intro-features { grid-template-columns: 1fr; }
  .service-row { flex-direction: row; }
  .service-row:nth-child(even) { flex-direction: row-reverse; }
  .service-row-image { width: 46%; aspect-ratio: auto; min-height: 300px; }
  .service-row-content { width: 54%; padding: 48px 44px; }
  .adv-grid { grid-template-columns: 1fr 1fr; }
  .adv-wide { grid-column: span 2; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; }
  .cta-box { padding: 64px 56px; }
}

@media (min-width: 1024px) {
  .container { padding: 0 32px; }
}

@media (max-width: 380px) {
  .hero-content h1 { font-size: 2rem; }
  .service-row-content { padding: 24px 18px; }
  .cta-box { padding: 40px 20px; }
}

/* roulang page: category3 */
:root {
  --c-primary: #0A5C42;
  --c-primary-light: #C9E8D8;
  --c-primary-dark: #083B2D;
  --c-accent: #F2781E;
  --c-bg: #F4F6F5;
  --c-surface: #FFFFFF;
  --c-text: #1F2731;
  --c-muted: #6B7A82;
  --c-border: #E1E7E4;
  --fs-hero: clamp(2.2rem, 5vw, 3.8rem);
  --fs-section: clamp(1.8rem, 3vw, 2.4rem);
  --fs-card: 1.125rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --shadow-card: 0 2px 8px rgba(11,57,41,0.06);
  --shadow-hover: 0 12px 32px rgba(11,57,41,0.12);
  --shadow-header: 0 1px 0 rgba(0,0,0,0.04), 0 4px 16px rgba(11,57,41,0.06);
  --container: 1200px;
  --space-section-mobile: 56px;
  --space-section-desktop: 96px;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 56px;
}
@media (min-width: 1024px) {
  body {
    padding-bottom: 0;
  }
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color 0.25s ease;
}
a:hover {
  color: var(--c-accent);
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}
input,
textarea {
  font-family: inherit;
  font-size: var(--fs-body);
  color: var(--c-text);
}
ul,
ol {
  list-style: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-primary);
  background: var(--c-primary-light);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-tag::before {
  content: "";
  width: 16px;
  height: 3px;
  background: var(--c-accent);
  border-radius: 2px;
  display: inline-block;
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: var(--fs-section);
  font-weight: 800;
  line-height: 1.25;
  color: var(--c-text);
}
.section-head p {
  color: var(--c-muted);
  margin-top: 12px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ========= Header 桌面端 ========= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-border);
  box-shadow: var(--shadow-header);
  display: none;
}
@media (min-width: 1024px) {
  .site-header {
    display: block;
  }
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 32px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand svg {
  width: 34px;
  height: 34px;
}
.brand span {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--c-primary-dark);
  letter-spacing: 0.02em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav > a,
.nav-dropdown-toggle {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--c-text);
  padding: 10px 16px;
  border-radius: 8px;
  position: relative;
  transition: color 0.25s ease, background 0.25s ease;
}
.main-nav > a:hover,
.nav-dropdown-toggle:hover {
  color: var(--c-primary);
  background: rgba(201, 232, 216, 0.35);
}
.main-nav > a.active,
.nav-dropdown > .nav-dropdown-toggle.active {
  color: var(--c-primary);
  font-weight: 600;
}
.main-nav > a.active::after,
.nav-dropdown.active > .nav-dropdown-toggle::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 3px;
  background: var(--c-accent);
  border-radius: 2px;
}
.nav-dropdown {
  position: relative;
}
.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 180px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 50;
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-menu a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.9375rem;
  color: var(--c-text);
}
.dropdown-menu a:hover {
  background: var(--c-primary-light);
  color: var(--c-primary);
}
.dropdown-menu a.active {
  background: var(--c-primary);
  color: #fff;
}
.header-contact-btn {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  background: var(--c-accent);
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(242, 120, 30, 0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.header-contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(242, 120, 30, 0.45);
  color: #fff;
}

/* ========= 移动端 Header ========= */
.mobile-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 60px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}
@media (min-width: 1024px) {
  .mobile-header {
    display: none;
  }
}
.mobile-header .brand {
  gap: 8px;
}
.mobile-header .brand svg {
  width: 28px;
  height: 28px;
}
.mobile-header .brand span {
  font-size: 1.15rem;
}
.mobile-hamburger {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-light);
  color: var(--c-primary);
}

/* ========= 移动端全屏菜单 ========= */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--c-bg);
  z-index: 150;
  padding: 80px 28px 40px;
  transform: translateX(100%);
  transition: transform 0.35s ease;
  overflow-y: auto;
}
.mobile-menu.open {
  transform: translateX(0);
}
.mobile-menu a.menu-link {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-text);
  padding: 16px 0;
  border-bottom: 1px solid var(--c-border);
}
.mobile-menu .mobile-sub {
  padding: 16px 0;
  border-bottom: 1px solid var(--c-border);
}
.mobile-menu .mobile-sub-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-text);
  display: block;
  margin-bottom: 8px;
}
.mobile-menu .mobile-sub a {
  display: block;
  padding: 10px 0 10px 20px;
  font-size: 1rem;
  color: var(--c-primary);
  border-left: 3px solid var(--c-primary-light);
  margin: 6px 0;
}
.mobile-menu-close {
  position: absolute;
  top: 16px;
  right: 20px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========= 移动端底部 Tab ========= */
.mobile-tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: stretch;
  z-index: 120;
}
@media (min-width: 1024px) {
  .mobile-tabbar {
    display: none;
  }
}
.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 0.6875rem;
  color: var(--c-muted);
  background: none;
  transition: color 0.25s ease;
}
.tab-item svg {
  width: 22px;
  height: 22px;
}
.tab-item.active {
  color: var(--c-accent);
  font-weight: 600;
}
.tab-item:hover {
  color: var(--c-accent);
}

/* ========= 服务抽屉 ========= */
.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(8, 59, 45, 0.5);
  z-index: 130;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s;
}
.drawer-mask.show {
  opacity: 1;
  visibility: visible;
}
.service-drawer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 140;
  background: var(--c-surface);
  border-radius: 20px 20px 0 0;
  padding: 24px 20px calc(56px + 16px);
  transform: translateY(100%);
  transition: transform 0.35s ease;
  box-shadow: 0 -8px 32px rgba(11, 57, 41, 0.15);
}
.service-drawer.show {
  transform: translateY(0);
}
.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.drawer-head span {
  font-size: 1.05rem;
  font-weight: 700;
}
.drawer-close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--c-bg);
  color: var(--c-muted);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.service-drawer a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 12px;
  border-radius: 12px;
  margin-bottom: 8px;
  background: var(--c-bg);
  transition: background 0.25s ease, transform 0.2s ease;
}
.service-drawer a:hover {
  background: var(--c-primary-light);
  transform: translateX(4px);
}
.drawer-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--c-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  flex-shrink: 0;
}
.service-drawer a strong {
  font-size: 1rem;
  color: var(--c-text);
  display: block;
}
.service-drawer a small {
  font-size: 0.8125rem;
  color: var(--c-muted);
}

/* ========= Hero ========= */
.category-hero {
  position: relative;
  min-height: 42vh;
  display: flex;
  align-items: center;
  padding: 80px 0 56px;
  overflow: hidden;
  margin-top: 60px;
}
@media (min-width: 1024px) {
  .category-hero {
    margin-top: 0;
    min-height: 44vh;
    padding: 120px 0 80px;
  }
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center 30%;
  z-index: 0;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(8, 59, 45, 0.92) 0%, rgba(10, 92, 66, 0.78) 45%, rgba(8, 59, 45, 0.5) 100%);
}
.category-hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}
.category-hero-content .section-tag {
  background: rgba(201, 232, 216, 0.18);
  color: #D9F2E6;
}
.category-hero-content .section-tag::before {
  background: var(--c-accent);
}
.category-hero-content h1 {
  font-size: var(--fs-hero);
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 18px;
}
.category-hero-content h1 span {
  color: var(--c-accent);
}
.category-hero-content p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 600;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
}
.btn-primary {
  background: var(--c-accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(242, 120, 30, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(242, 120, 30, 0.4);
  color: #fff;
}
.btn-outline {
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  color: #fff;
  background: transparent;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: #fff;
  color: #fff;
}

/* ========= 面包屑 ========= */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.875rem;
  color: var(--c-muted);
  padding-top: 24px;
  padding-bottom: 24px;
}
.breadcrumb a {
  color: var(--c-muted);
}
.breadcrumb a:hover {
  color: var(--c-primary);
}
.breadcrumb .sep {
  color: var(--c-border);
}

/* ========= 分类简介 ========= */
.category-intro {
  padding: 16px 0 64px;
  background: var(--c-bg);
}
@media (min-width: 1024px) {
  .category-intro {
    padding: 16px 0 96px;
  }
}
.intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
@media (min-width: 992px) {
  .intro-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
  }
}
.intro-text h2 {
  font-size: var(--fs-section);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}
.intro-text > p {
  color: var(--c-muted);
  line-height: 1.8;
  margin-bottom: 28px;
}
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--c-border);
}
.feature-list li:last-child {
  border-bottom: none;
}
.feature-list .feat-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 8px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}
.feature-list strong {
  display: block;
  font-size: 1rem;
  color: var(--c-text);
  margin-bottom: 2px;
}
.feature-list span {
  font-size: 0.875rem;
  color: var(--c-muted);
}
.intro-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}
.intro-image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

/* ========= 子服务大行卡片 ========= */
.category-services {
  background: var(--c-surface);
  padding: 64px 0;
}
@media (min-width: 1024px) {
  .category-services {
    padding: 96px 0;
  }
}
.service-rows {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.service-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
@media (min-width: 992px) {
  .service-row {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    padding: 32px;
  }
  .service-row.reverse .service-row-media {
    order: 2;
  }
  .service-row.reverse .service-row-content {
    order: 1;
  }
}
.service-row:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.service-row-media {
  border-radius: var(--radius-md);
  overflow: hidden;
}
.service-row-media img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.service-row:hover .service-row-media img {
  transform: scale(1.02);
}
.service-row-content h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--c-text);
}
.service-row-content p {
  color: var(--c-muted);
  line-height: 1.75;
  margin-bottom: 20px;
}
.service-row-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--c-primary);
}
.service-row-link svg {
  transition: transform 0.25s ease;
}
.service-row-link:hover svg {
  transform: translateX(4px);
}
.service-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.service-badges span {
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--c-bg);
  color: var(--c-primary);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ========= 优势点 2+1 ========= */
.advantage-section {
  padding: 64px 0;
  background: var(--c-bg);
}
@media (min-width: 1024px) {
  .advantage-section {
    padding: 96px 0;
  }
}
.advantage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 768px) {
  .advantage-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.adv-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
}
.adv-card .adv-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.adv-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.adv-card p {
  color: var(--c-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}
.adv-wide {
  background: linear-gradient(120deg, var(--c-primary-dark) 0%, var(--c-primary) 100%);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  color: #fff;
  grid-column: 1;
}
@media (min-width: 768px) {
  .adv-wide {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 28px;
  }
  .adv-wide .adv-icon {
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
  }
}
.adv-wide h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.adv-wide p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9375rem;
}

/* ========= FAQ ========= */
.faq-section {
  padding: 64px 0;
  background: var(--c-surface);
}
@media (min-width: 1024px) {
  .faq-section {
    padding: 96px 0;
  }
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item.open {
  border-color: var(--c-primary-light);
  box-shadow: var(--shadow-card);
  background: #F9FCFB;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text);
  text-align: left;
  width: 100%;
}
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--c-accent);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--c-muted);
  line-height: 1.75;
  font-size: 0.9375rem;
}

/* ========= CTA ========= */
.cta-section {
  padding: 64px 0;
  background: var(--c-bg);
}
@media (min-width: 1024px) {
  .cta-section {
    padding: 80px 0;
  }
}
.cta-box {
  background: linear-gradient(120deg, var(--c-primary-dark) 0%, var(--c-primary) 100%);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  border: 1.5px solid rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  top: -80px;
  right: -60px;
}
.cta-box h2 {
  font-size: var(--fs-section);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-box p {
  color: rgba(255, 255, 255, 0.78);
  max-width: 560px;
  margin: 0 auto 28px;
  line-height: 1.7;
}
.cta-box .btn {
  position: relative;
  z-index: 2;
}

/* ========= Footer ========= */
.site-footer {
  background: var(--c-primary-dark);
  color: rgba(255, 255, 255, 0.72);
  padding: 56px 0 24px;
}
.site-footer .brand {
  margin-bottom: 12px;
}
.site-footer .brand span {
  color: #fff;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
    gap: 40px;
  }
}
.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  max-width: 280px;
}
.footer-links h4,
.footer-contact h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.footer-links a {
  display: block;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.68);
  padding: 5px 0;
  transition: color 0.25s ease, padding-left 0.25s ease;
}
.footer-links a:hover {
  color: var(--c-accent);
  padding-left: 6px;
}
.footer-contact p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.68);
  padding: 4px 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 20px;
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.45);
}

@media (max-width: 767px) {
  .footer-grid {
    gap: 28px;
  }
}

/* ========= 响应式微调 ========= */
@media (min-width: 1024px) {
  .mobile-header,
  .mobile-tabbar {
    display: none;
  }
}
@media (max-width: 1023px) {
  .site-header {
    display: none;
  }
}
@media (max-width: 767px) {
  .hero-actions .btn {
    width: 100%;
  }
  .category-hero {
    padding: 72px 0 48px;
  }
  .category-hero-content h1 {
    font-size: 2.2rem;
  }
  .service-row {
    padding: 16px;
  }
  .faq-question {
    padding: 16px 18px;
    font-size: 0.9375rem;
  }
  .faq-answer-inner {
    padding: 0 18px 16px;
  }
  .cta-box {
    padding: 36px 20px;
  }
}