/* roulang page: index */
:root {
  --color-primary: #0E6E6E;
  --color-primary-deep: #0A5456;
  --color-primary-soft: #E4F0EE;
  --color-accent: #DFA634;
  --color-bg: #F7F5F0;
  --color-surface: #FFFFFF;
  --color-text: #1C2B2A;
  --color-muted: #5C6E6C;
  --color-border: #E4DDD2;
  --color-footer-bg: #122220;
  --color-success: #2E9E6B;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --container: 1200px;
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 4px 20px rgba(17, 47, 45, 0.06);
  --shadow-hover: 0 12px 36px rgba(17, 47, 45, 0.14);
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

ul, ol {
  list-style: none;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.icon {
  width: 24px;
  height: 24px;
  display: inline-block;
  flex-shrink: 0;
}

.icon-arrow {
  width: 16px;
  height: 16px;
  position: relative;
  transition: transform 0.2s ease;
}

.icon-arrow::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 0;
  width: 10px;
  height: 10px;
  border-top: 2px solid currentColor;
  border-right: 2px solid currentColor;
  transform: translateY(-50%) rotate(45deg);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 14px;
  transition: gap 0.2s ease;
}

.link-arrow:hover {
  gap: 12px;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  height: 72px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: #ffffff;
  box-shadow: 0 4px 24px rgba(17, 47, 45, 0.08);
  border-color: var(--color-border);
}

.header-inner {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: #fff;
  letter-spacing: -1px;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  white-space: nowrap;
}

.logo-text .logo-sub {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-muted);
  display: block;
  line-height: 1.3;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  padding: 8px 2px;
  position: relative;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
  transition: transform 0.2s ease;
}

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

.main-nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.main-nav a.active::after {
  transform: translateX(-50%) scaleX(1);
}

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

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(46, 158, 107, 0.1);
  padding: 6px 14px;
  border-radius: var(--radius-tag);
  font-size: 13px;
  font-weight: 500;
  color: #1f8a5b;
}

.status-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  position: relative;
}

.status-badge .dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--color-success);
  opacity: 0.3;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.8); opacity: 0.4; }
  70% { transform: scale(1.6); opacity: 0; }
  100% { transform: scale(0.8); opacity: 0; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1.4;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--color-primary-deep);
  border-color: var(--color-primary-deep);
  box-shadow: 0 6px 20px rgba(14, 110, 110, 0.25);
}

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

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

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

.btn-light:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-soft);
}

.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.6);
}

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

.btn:focus-visible,
.main-nav a:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(14, 110, 110, 0.4);
  outline-offset: 2px;
}

/* Hero */
.hero {
  position: relative;
  background: linear-gradient(118deg, rgba(6, 60, 60, 0.92) 0%, rgba(6, 60, 60, 0.78) 55%, rgba(10, 84, 86, 0.65) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  color: #fff;
  padding: 160px 0 120px;
  margin-top: 72px;
  overflow: hidden;
}

.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 6px 16px;
  border-radius: var(--radius-tag);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.4px;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}

.hero h1 {
  font-size: 44px;
  line-height: 1.3;
  font-weight: 700;
  max-width: 680px;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
  max-width: 600px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-trust .badge {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.92);
  padding: 6px 14px;
  border-radius: var(--radius-tag);
  font-size: 13px;
}

/* Section base */
.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--color-surface);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 6px 14px;
  border-radius: var(--radius-tag);
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}

.section-title {
  font-size: 32px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--color-text);
}

.section-sub {
  font-size: 15px;
  color: var(--color-muted);
  max-width: 480px;
  line-height: 1.7;
}

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

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  height: 260px;
  display: flex;
  flex-direction: column;
}

.service-card .card-num {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 14px;
  font-weight: 600;
  color: #c5cfcc;
  letter-spacing: 0.5px;
}

.service-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--color-primary);
  font-size: 22px;
  font-weight: 700;
}

.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-text);
}

.service-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.service-card .link-arrow {
  margin-top: 12px;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
  background: linear-gradient(180deg, #ffffff 0%, var(--color-primary-soft) 100%);
}

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

/* Stats */
.stats-panel {
  background: var(--color-primary-soft);
  border-radius: var(--radius-card);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  overflow: hidden;
}

.stats-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  opacity: 0.5;
}

.stat-item {
  text-align: center;
  padding: 0 16px;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -16px;
  top: 10%;
  height: 80%;
  width: 1px;
  background: rgba(14, 110, 110, 0.2);
}

.stat-accent {
  width: 24px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  margin: 0 auto 12px;
}

.stat-number {
  font-size: 38px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  letter-spacing: -1px;
}

.stat-unit {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary-deep);
  margin-left: 2px;
}

.stat-label {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 8px;
  font-weight: 500;
}

/* Cases */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.case-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.case-card .case-cover {
  height: 240px;
  overflow: hidden;
  position: relative;
}

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

.case-card:hover .case-cover img {
  transform: scale(1.02);
}

.case-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--color-primary);
  color: #fff;
  padding: 4px 12px;
  border-radius: var(--radius-tag);
  font-size: 12px;
  font-weight: 500;
}

.case-body {
  padding: 24px;
}

.case-body h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.case-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.case-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-muted);
}

/* News list */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 16px 24px;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

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

.news-thumb {
  width: 120px;
  height: 80px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-primary-soft);
}

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

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

.news-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-content .news-excerpt {
  font-size: 14px;
  color: var(--color-muted);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 6px;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--color-muted);
}

.news-meta .badge {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  padding: 2px 10px;
  border-radius: var(--radius-tag);
  font-weight: 500;
}

.news-link {
  color: var(--color-primary);
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}

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

.news-empty {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-card);
  padding: 48px 24px;
  text-align: center;
  color: var(--color-muted);
  background: var(--color-surface);
  font-size: 15px;
}

.news-empty .empty-icon {
  font-size: 36px;
  margin-bottom: 12px;
  color: #c9d6d3;
}

/* Solutions */
.solution-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 96px;
}

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

.solution-block.reversed .solution-visual {
  order: 2;
}

.solution-block.reversed .solution-content {
  order: 1;
}

.solution-visual {
  border-radius: var(--radius-card);
  overflow: hidden;
  min-height: 320px;
  background: var(--color-primary-soft);
  position: relative;
}

.solution-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.4s ease;
}

.solution-block:hover .solution-visual img {
  transform: scale(1.02);
}

.solution-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(6, 60, 60, 0.35) 100%);
}

.solution-content .section-tag {
  margin-bottom: 16px;
}

.solution-content h3 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
  color: var(--color-text);
}

.solution-content > p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.solution-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.solution-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.6;
}

.solution-features .check {
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  margin-top: 2px;
}

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

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  transition: background 0.2s ease, border-color 0.2s ease;
  overflow: hidden;
}

.faq-item details > summary {
  list-style: none;
}

.faq-item details > summary::-webkit-details-marker {
  display: none;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  min-height: 60px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.faq-item summary .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.2s ease, color 0.2s ease;
}

.faq-item details[open] summary {
  color: var(--color-primary);
}

.faq-item details[open] summary .faq-icon {
  background: var(--color-primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.75;
}

.faq-item[open] {
  background: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.contact-info > p {
  color: var(--color-muted);
  font-size: 15px;
  margin-bottom: 32px;
  max-width: 420px;
}

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

.contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-list .contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-list .contact-label {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 2px;
}

.contact-list .contact-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}

.contact-form-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.contact-form-wrap h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.contact-form-wrap .form-intro {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  height: 46px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  padding: 0 14px;
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.form-group textarea {
  height: 120px;
  padding: 12px 14px;
  resize: vertical;
  line-height: 1.6;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(14, 110, 110, 0.12);
}

.form-submit {
  display: flex;
  justify-content: flex-end;
}

.form-submit .btn {
  min-width: 40%;
}

/* CTA */
.cta-section {
  background: linear-gradient(120deg, var(--color-primary-deep) 0%, var(--color-primary) 60%, #138383 100%);
  padding: 80px 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -30px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

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

.cta-text p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 520px;
  line-height: 1.7;
}

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

/* Footer */
.site-footer {
  background: var(--color-footer-bg);
  color: #c9d4d2;
  padding-top: 64px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.footer-brand .logo-mark {
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
}

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

.footer-brand .logo-text .logo-sub {
  color: rgba(255, 255, 255, 0.5);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  max-width: 300px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: #fff;
}

.footer-contact p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  margin-bottom: 12px;
}

.footer-contact .contact-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.footer-contact .contact-row .label {
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom .icp {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: transparent;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  z-index: 110;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  display: block;
  transition: transform 0.3s ease, background 0.3s ease;
}

.nav-toggle span::before {
  position: absolute;
  transform: translateY(-7px);
}

.nav-toggle span::after {
  position: absolute;
  transform: translateY(7px);
}

.nav-toggle.open span {
  background: transparent;
}

.nav-toggle.open span::before {
  transform: rotate(45deg);
}

.nav-toggle.open span::after {
  transform: rotate(-45deg);
}

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

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

  .stat-item:nth-child(2)::after {
    display: none;
  }

  .solution-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .solution-block.reversed .solution-visual {
    order: 1;
  }

  .solution-block.reversed .solution-content {
    order: 2;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .main-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header-right .status-badge {
    display: none;
  }

  .mobile-nav-open .main-nav {
    display: flex;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 8px;
    box-shadow: 0 12px 32px rgba(17, 47, 45, 0.12);
    border-bottom: 1px solid var(--color-border);
    z-index: 105;
  }

  .mobile-nav-open .main-nav a {
    width: 100%;
    padding: 12px 8px;
    font-size: 16px;
    border-radius: 8px;
  }

  .mobile-nav-open .main-nav a::after {
    display: none;
  }

  .mobile-nav-open .main-nav a:hover,
  .mobile-nav-open .main-nav a.active {
    background: var(--color-primary-soft);
    color: var(--color-primary);
  }
}

@media (max-width: 640px) {
  .site-header {
    height: 60px;
  }

  .header-inner {
    padding: 0 16px;
  }

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

  .logo-text .logo-sub {
    display: none;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }

  .hero {
    padding: 120px 0 80px;
    margin-top: 60px;
  }

  .hero h1 {
    font-size: 32px;
  }

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

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

  .section {
    padding: 64px 0;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 32px;
    gap: 8px;
  }

  .section-title {
    font-size: 26px;
  }

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

  .service-card {
    height: auto;
    min-height: 220px;
  }

  .stats-panel {
    padding: 32px 24px;
    gap: 20px;
  }

  .stat-number {
    font-size: 30px;
  }

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

  .case-card .case-cover {
    height: 200px;
  }

  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
  }

  .news-thumb {
    width: 100%;
    height: 140px;
  }

  .news-link {
    align-self: flex-end;
  }

  .solution-block {
    gap: 28px;
    margin-bottom: 64px;
  }

  .solution-visual {
    min-height: 220px;
  }

  .solution-content h3 {
    font-size: 22px;
  }

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

  .contact-form-wrap {
    padding: 24px;
  }

  .form-submit .btn {
    width: 100%;
    min-width: 0;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-actions .btn {
    width: 100%;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .mobile-nav-open .main-nav {
    top: 60px;
  }
}

/* roulang page: category1 */
:root {
  --color-primary: #0E6E6E;
  --color-primary-deep: #0A5456;
  --color-primary-soft: #E4F0EE;
  --color-accent: #DFA634;
  --color-bg: #F7F5F0;
  --color-surface: #FFFFFF;
  --color-text: #1C2B2A;
  --color-muted: #5C6E6C;
  --color-border: #E4DDD2;
  --color-footer-bg: #122220;
  --color-success: #2E9E6B;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --container: 1200px;
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 4px 20px rgba(17, 47, 45, 0.06);
  --shadow-hover: 0 12px 36px rgba(17, 47, 45, 0.14);
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

input, textarea {
  font-family: inherit;
  font-size: 14px;
}

ul {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-header {
  margin-bottom: 48px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 6px 16px;
  border-radius: var(--radius-tag);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 32px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.section-sub {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 720px;
}

/* ===== Header Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.site-header.scrolled {
  background: #fff;
  box-shadow: 0 4px 20px rgba(17, 47, 45, 0.08);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  gap: 24px;
}

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

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 4px 12px rgba(14, 110, 110, 0.25);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.5px;
}

.logo-sub {
  font-size: 11px;
  font-weight: 400;
  color: var(--color-muted);
  letter-spacing: 0.3px;
}

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

.main-nav a {
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-btn);
  position: relative;
  transition: color 0.2s ease, background 0.2s ease;
}

.main-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.main-nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
}

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

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-success);
  background: rgba(46, 158, 107, 0.1);
  padding: 6px 14px;
  border-radius: var(--radius-tag);
  white-space: nowrap;
}

.status-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 3px rgba(46, 158, 107, 0.2);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.15); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid rgba(14, 110, 110, 0.4);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background: var(--color-primary-deep);
  box-shadow: 0 6px 16px rgba(14, 110, 110, 0.25);
  transform: translateY(-1px);
}

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

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

.btn-light {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(4px);
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.28);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  align-items: center;
  justify-content: center;
  background: #fff;
  position: relative;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle span {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.nav-toggle span::before {
  top: -6px;
  left: 0;
}

.nav-toggle span::after {
  top: 6px;
  left: 0;
}

.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);
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  background: linear-gradient(rgba(6, 60, 60, 0.88), rgba(6, 60, 60, 0.65)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color: #fff;
  padding: 80px 0 64px;
}

.banner-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb .sep {
  opacity: 0.5;
}

.breadcrumb .current {
  color: var(--color-accent);
  font-weight: 500;
}

.page-banner h1 {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.banner-desc {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 680px;
}

/* ===== Service Intro ===== */
.intro-section {
  padding: 96px 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.intro-media {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  position: relative;
}

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

.intro-media:hover img {
  transform: scale(1.03);
}

.intro-content h2 {
  font-size: 32px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
}

.intro-content p {
  font-size: 16px;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.intro-content .text-primary {
  color: var(--color-text);
  font-weight: 500;
}

.feature-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--color-text);
}

.feature-list .check-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ===== Service Values ===== */
.values-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 96px 0;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.value-card {
  padding: 32px 24px;
  border-radius: var(--radius-card);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all 0.2s ease;
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}

.value-card .num {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-primary);
  font-family: "SF Mono", "Roboto Mono", monospace;
  line-height: 1.2;
  margin-bottom: 8px;
}

.value-card .unit {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 4px;
}

.value-card .label {
  font-size: 13px;
  color: var(--color-muted);
}

/* ===== Process Section ===== */
.process-section {
  padding: 96px 0;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.step-card {
  position: relative;
  padding: 32px 24px;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: all 0.2s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-family: "SF Mono", "Roboto Mono", monospace;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

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

.step-arrow {
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent);
  font-size: 20px;
  z-index: 2;
}

/* ===== Scene Section ===== */
.scene-section {
  background: var(--color-primary-soft);
  padding: 96px 0;
}

.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 48px;
}

.scene-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 32px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.scene-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 24px;
}

.scene-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
}

.scene-card p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.75;
}

.scene-card ul {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.scene-card ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text);
}

.scene-card ul li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== Related ===== */
.related-section {
  padding: 96px 0;
}

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

.related-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.2s ease;
}

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

.related-card .media {
  position: relative;
  overflow: hidden;
}

.related-card .media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.related-card .body {
  padding: 24px;
}

.related-card .tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 4px 12px;
  border-radius: var(--radius-tag);
  margin-bottom: 12px;
  font-weight: 500;
}

.related-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 8px;
}

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

/* ===== FAQ ===== */
.faq-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 96px 0;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  margin-bottom: 16px;
  background: var(--color-surface);
  transition: border-color 0.2s ease;
}

.faq-item input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.faq-item label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  min-height: 58px;
  transition: color 0.2s ease;
}

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

.faq-item .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.faq-item .faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item .faq-body-inner {
  padding: 0 24px 24px;
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.8;
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: 0;
}

.faq-item input:checked + label {
  color: var(--color-primary);
}

.faq-item input:checked + label .faq-icon {
  background: var(--color-primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-item input:checked + label + .faq-body {
  max-height: 500px;
}

.faq-item input:focus-visible + label {
  outline: 2px solid rgba(14, 110, 110, 0.4);
  outline-offset: 2px;
  border-radius: var(--radius-card);
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-deep) 0%, var(--color-primary) 60%, #147D7A 100%);
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.cta-info h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 16px;
}

.cta-info p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 24px;
}

.cta-info .contact-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-items .item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
}

.contact-items .item .icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.cta-form-wrap {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 40px;
  box-shadow: 0 16px 48px rgba(6, 60, 60, 0.3);
}

.cta-form-wrap h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.cta-form-wrap .form-tip {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  padding: 0 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  background: var(--color-bg);
  font-size: 14px;
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.form-group textarea {
  height: 120px;
  padding: 12px 16px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 110, 110, 0.12);
  background: #fff;
}

.form-submit {
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.form-submit .btn {
  min-width: 140px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-footer-bg);
  color: #C9D4D2;
  padding: 64px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 20px;
}

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

.footer-brand .logo-sub {
  color: rgba(255, 255, 255, 0.6);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  max-width: 360px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: #C9D4D2;
}

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

.footer-contact .contact-row {
  display: flex;
  gap: 8px;
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 8px;
  color: #C9D4D2;
}

.footer-contact .label {
  color: rgba(255, 255, 255, 0.5);
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.footer-bottom .icp {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom .icp:hover {
  color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .section {
    padding: 72px 0;
  }

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

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

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

  .step-arrow {
    display: none;
  }

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

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

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

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 4px;
    transform: translateY(-140%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 16px 32px rgba(17, 47, 45, 0.1);
    z-index: 999;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav a {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 8px;
  }

  .main-nav a.active::after {
    display: none;
  }

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

  .nav-toggle {
    display: flex;
  }

  .status-badge {
    display: none;
  }
}

@media (max-width: 640px) {
  .header-inner {
    height: 60px;
    gap: 12px;
  }

  .main-nav {
    top: 60px;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
    font-size: 16px;
    border-radius: 8px;
  }

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

  .logo-sub {
    display: none;
  }

  .header-right .btn {
    padding: 8px 16px;
    font-size: 14px;
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .page-banner {
    padding: 56px 0 48px;
  }

  .page-banner h1 {
    font-size: 32px;
  }

  .intro-grid {
    gap: 32px;
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .value-card {
    padding: 24px 16px;
  }

  .value-card .num {
    font-size: 32px;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

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

  .cta-grid {
    gap: 40px;
  }

  .cta-form-wrap {
    padding: 28px 20px;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .btn {
    padding: 10px 18px;
    font-size: 14px;
  }

  .intro-content h2 {
    font-size: 26px;
  }

  .scene-card {
    padding: 24px;
  }

  .faq-item label {
    padding: 16px 18px;
    font-size: 15px;
  }

  .faq-item .faq-body-inner {
    padding: 14px 18px 18px;
    font-size: 14px;
  }

  .cta-info h2 {
    font-size: 26px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    padding: 0 16px;
  }

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

  .banner-inner {
    padding: 0 16px;
  }
}

/* roulang page: article */
:root {
  --color-primary: #0E6E6E;
  --color-primary-deep: #0A5456;
  --color-primary-soft: #E4F0EE;
  --color-accent: #DFA634;
  --color-bg: #F7F5F0;
  --color-surface: #FFFFFF;
  --color-text: #1C2B2A;
  --color-muted: #5C6E6C;
  --color-border: #E4DDD2;
  --color-footer-bg: #122220;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --container: 1200px;
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 4px 20px rgba(17, 47, 45, 0.06);
  --shadow-hover: 0 12px 36px rgba(17, 47, 45, 0.14);
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 245, 240, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: 72px;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: #ffffff;
  box-shadow: 0 4px 16px rgba(17, 47, 45, 0.06);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  height: 72px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-deep));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(14, 110, 110, 0.28);
}

.logo-text {
  color: var(--color-text);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.2;
  display: flex;
  flex-direction: column;
}

.logo-sub {
  font-size: 11px;
  color: var(--color-muted);
  font-weight: 400;
  margin-top: 2px;
}

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

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

.main-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.main-nav a.active {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  font-weight: 600;
}

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

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(46, 158, 107, 0.12);
  color: #1E7A4D;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.status-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2E9E6B;
  box-shadow: 0 0 0 3px rgba(46, 158, 107, 0.2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  line-height: 1.4;
}

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

.btn-primary:hover {
  background: var(--color-primary-deep);
  box-shadow: 0 6px 16px rgba(14, 110, 110, 0.3);
  transform: translateY(-1px);
}

a:focus-visible,
button:focus-visible,
.main-nav a:focus-visible {
  outline: 2px solid rgba(14, 110, 110, 0.4);
  outline-offset: 2px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 10px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  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);
}

/* ===== Article Page Main ===== */
.article-page-main {
  padding: 40px 0 96px;
  min-height: 60vh;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 24px;
  max-width: 760px;
}

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

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

.article-breadcrumb .sep {
  color: #c8cdcb;
}

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

/* ===== Article Card ===== */
.article-wrap {
  max-width: 760px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 48px;
  box-shadow: var(--shadow-card);
}

.article-wrap h1 {
  font-size: 38px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 20px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-muted);
}

.meta-label {
  color: #8A9A97;
  margin-right: 6px;
}

.meta-badge {
  display: inline-block;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}

/* ===== Article Content ===== */
.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
}

.article-content > *:last-child {
  margin-bottom: 0;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 36px 0 16px;
  padding-top: 8px;
  color: var(--color-text);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--color-text);
}

.article-content p {
  margin: 0 0 1.2em;
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.2em;
  padding-left: 1.4em;
}

.article-content ul li,
.article-content ol li {
  margin-bottom: 6px;
}

.article-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content strong {
  font-weight: 600;
}

.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-soft);
  padding: 18px 22px;
  margin: 24px 0;
  border-radius: 0 12px 12px 0;
  color: var(--color-primary-deep);
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 24px 0 8px;
}

.article-content figure {
  margin: 24px 0;
}

.article-content figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 8px;
}

.article-content code {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
}

.article-content pre {
  background: #142735;
  color: #e6f2f1;
  padding: 20px;
  border-radius: 12px;
  overflow-x: auto;
  margin: 24px 0;
}

.article-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}

.article-content th {
  background: var(--color-primary-soft);
  font-weight: 600;
  text-align: left;
}

.article-content th,
.article-content td {
  border: 1px solid var(--color-border);
  padding: 10px 14px;
}

.table-wrap {
  overflow-x: auto;
  margin: 24px 0;
}

.table-wrap table {
  margin: 0;
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 32px 0;
}

/* ===== Article Footer ===== */
.article-footer {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tag {
  display: inline-block;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 999px;
  transition: all 0.2s ease;
}

.tag:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-color: transparent;
}

.article-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.page-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 10px;
  background: var(--color-primary-soft);
  transition: all 0.2s ease;
}

.page-link:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.back-list {
  color: var(--color-muted);
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.back-list:hover {
  color: var(--color-primary);
}

/* ===== Related ===== */
.related-section {
  max-width: 760px;
  margin: 48px auto 0;
}

.section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

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

.section-head h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 0;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  text-decoration: none;
  transition: all 0.2s ease;
  display: block;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}

.related-thumb {
  width: 100%;
  height: 140px;
  overflow: hidden;
}

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

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

.related-body {
  padding: 16px;
}

.related-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 40px;
}

.related-time {
  font-size: 13px;
  color: var(--color-muted);
}

/* ===== CTA ===== */
.article-cta {
  max-width: 760px;
  margin: 48px auto 0;
}

.cta-panel {
  background: linear-gradient(135deg, #0E6E6E 0%, #0A5456 100%);
  border-radius: var(--radius-card);
  padding: 40px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  color: #ffffff;
}

.cta-info h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 8px;
}

.cta-info p {
  font-size: 15px;
  opacity: 0.85;
  margin: 0;
}

.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: #ffffff;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #ffffff;
}

/* ===== Not Found ===== */
.not-found {
  max-width: 760px;
  margin: 40px auto;
}

.not-found-card {
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-card);
  padding: 80px 40px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.not-found-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 28px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.not-found-card h1 {
  font-size: 28px;
  margin: 0 0 12px;
}

.not-found-card p {
  color: var(--color-muted);
  margin: 0 0 28px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-footer-bg);
  color: #C9D4D2;
  padding: 64px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 48px;
}

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

.site-footer .logo-text {
  color: #ffffff;
  font-size: 17px;
  font-weight: 800;
}

.site-footer .logo-sub {
  color: #87A09D;
  font-size: 11px;
  font-weight: 400;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #87A09D;
  margin: 0;
  max-width: 320px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-col a {
  color: #C9D4D2;
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-contact .contact-row {
  display: flex;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 10px;
}

.footer-contact .label {
  color: #87A09D;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(201, 212, 210, 0.7);
  margin: 0;
}

.footer-bottom .icp {
  font-size: 13px;
  color: rgba(201, 212, 210, 0.7);
  text-decoration: none;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-header,
  .header-inner {
    height: 60px;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 12px 32px rgba(17, 47, 45, 0.12);
    display: none;
    z-index: 99;
  }

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

  .main-nav a {
    padding: 14px 16px;
    border-radius: 12px;
  }

  .header-right .status-badge {
    display: none;
  }

  .article-wrap {
    padding: 32px 24px;
  }

  .article-wrap h1 {
    font-size: 30px;
  }

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

  .cta-panel {
    padding: 32px 24px;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .article-page-main {
    padding: 32px 0 64px;
  }

  .article-wrap {
    padding: 24px 20px;
    border-radius: 14px;
  }

  .article-wrap h1 {
    font-size: 26px;
    line-height: 1.4;
  }

  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .article-pagination {
    justify-content: center;
  }

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

  .cta-panel {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-actions {
    width: 100%;
  }

  .cta-actions .btn {
    flex: 1;
  }

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

/* roulang page: category2 */
:root {
  --color-primary: #0E6E6E;
  --color-primary-deep: #0A5456;
  --color-primary-soft: #E4F0EE;
  --color-accent: #DFA634;
  --color-bg: #F7F5F0;
  --color-surface: #FFFFFF;
  --color-text: #1C2B2A;
  --color-muted: #5C6E6C;
  --color-border: #E4DDD2;
  --color-footer-bg: #122220;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --container: 1200px;
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 4px 20px rgba(17, 47, 45, 0.06);
  --shadow-hover: 0 12px 36px rgba(17, 47, 45, 0.14);
  --transition: 0.2s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-deep); }
button { font-family: var(--font-sans); cursor: pointer; border: none; background: none; }
input, textarea { font-family: var(--font-sans); }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid rgba(14, 110, 110, 0.4); outline-offset: 2px; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 4px 14px;
  border-radius: var(--radius-tag);
  margin-bottom: 16px;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.section-head h2 {
  font-size: 32px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}
.section-head p {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: all var(--transition);
  text-decoration: none;
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
}
.btn-primary:hover {
  background: var(--color-primary-deep);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(14, 110, 110, 0.28);
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-deep);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition), background var(--transition);
}
.site-header.scrolled {
  background: #ffffff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 20px rgba(17, 47, 45, 0.05);
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}
.logo-sub {
  font-size: 11px;
  font-weight: 400;
  color: var(--color-muted);
  letter-spacing: 0.02em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.main-nav a {
  position: relative;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.main-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}
.main-nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}
.main-nav a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 16px;
  right: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
}
.nav-cta-mobile { display: none; }
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: #1E7A4B;
  background: rgba(46, 158, 107, 0.1);
  padding: 6px 14px;
  border-radius: var(--radius-tag);
}
.status-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2E9E6B;
  display: inline-block;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--color-primary-soft);
  gap: 4px;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Page Banner */
.page-banner {
  position: relative;
  background: linear-gradient(to right, rgba(6, 60, 60, 0.92), rgba(6, 60, 60, 0.76)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding: 64px 0;
  color: #ffffff;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.7); text-decoration: none; transition: color var(--transition); }
.breadcrumb a:hover { color: #ffffff; }
.breadcrumb .sep { color: rgba(255, 255, 255, 0.4); }
.breadcrumb .current { color: #ffffff; font-weight: 500; }
.page-banner h1 {
  font-size: 38px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 14px;
}
.page-banner p {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
}

/* Content Blocks */
.content-wrap {
  padding: 96px 0 48px;
}
.content-block {
  display: grid;
  grid-template-columns: 460px 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 64px;
}
.content-block.reverse {
  direction: rtl;
}
.content-block.reverse > * {
  direction: ltr;
}
.content-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  aspect-ratio: 4 / 3;
  background: var(--color-primary-soft);
}
.content-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.content-block:hover .content-image img {
  transform: scale(1.02);
}
.content-text h2 {
  font-size: 28px;
  line-height: 1.35;
  font-weight: 700;
  margin-bottom: 16px;
}
.content-text p {
  color: var(--color-muted);
  line-height: 1.75;
  margin-bottom: 16px;
  font-size: 15px;
}
.process-list {
  margin-top: 12px;
}
.process-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}
.process-list .step {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.process-list li span:last-child {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
}
.process-list li strong {
  display: block;
  font-size: 16px;
  color: var(--color-text);
  margin-bottom: 2px;
  font-weight: 600;
}

/* Features */
.features {
  padding: 96px 0;
  background: var(--color-surface);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  transition: all var(--transition);
}
.feature-card:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--color-primary);
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
}

/* Scenarios */
.scenarios {
  padding: 96px 0;
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.scenario-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  padding: 32px 28px;
  transition: all var(--transition);
}
.scenario-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--color-primary);
}
.scenario-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.scenario-card h3::before {
  content: "";
  width: 8px;
  height: 20px;
  border-radius: 4px;
  background: var(--color-accent);
}
.scenario-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* Related */
.related {
  padding: 96px 0;
  background: var(--color-surface);
}
.related-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.related-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 16px;
  text-decoration: none;
  transition: all var(--transition);
}
.related-item:hover {
  background: var(--color-surface);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}
.related-thumb {
  width: 120px;
  height: 80px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-primary-soft);
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.related-info {
  flex: 1;
  min-width: 0;
}
.related-info .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 2px 10px;
  border-radius: var(--radius-tag);
  margin-bottom: 6px;
}
.related-info h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.related-info p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 4px;
}
.related-info .meta {
  font-size: 13px;
  color: var(--color-muted);
}
.related-item .arrow {
  font-size: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.related-item:hover .arrow {
  transform: translateX(4px);
}

/* FAQ */
.faq-section {
  padding: 96px 0;
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  min-height: 48px;
  transition: background var(--transition);
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-left: 20px;
  transition: transform 0.3s ease;
}
.faq-item[open] summary {
  background: var(--color-primary-soft);
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item summary:hover {
  background: var(--color-primary-soft);
}
.faq-answer {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.75;
  background: var(--color-primary-soft);
}
.faq-answer p {
  margin-bottom: 8px;
}
.faq-answer p:last-child { margin-bottom: 0; }

/* Contact */
.contact-section {
  padding: 96px 0;
  background: var(--color-surface);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact-info h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 14px;
}
.contact-info > p {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 28px;
}
.contact-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 15px;
  color: var(--color-text);
}
.contact-list li span {
  color: var(--color-muted);
  min-width: 40px;
}
.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 32px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  font-size: 15px;
  color: var(--color-text);
  transition: all var(--transition);
}
.form-group textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(14, 110, 110, 0.12);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #A6B3B1;
}
.form-submit {
  display: flex;
  justify-content: flex-end;
}

/* CTA inline */
.cta-inline {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--color-primary-soft);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-inline p {
  font-size: 15px;
  color: var(--color-text);
  font-weight: 500;
}
.cta-inline a {
  flex-shrink: 0;
}

/* Footer */
.site-footer {
  background: var(--color-footer-bg);
  color: #C9D4D2;
  padding: 64px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand .logo-mark {
  background: var(--color-accent);
}
.footer-brand .logo-text {
  color: #ffffff;
}
.footer-brand .logo-sub {
  color: rgba(255, 255, 255, 0.5);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  max-width: 300px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-col ul li a:hover {
  color: #ffffff;
}
.footer-contact .contact-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.6;
}
.footer-contact .label {
  color: rgba(255, 255, 255, 0.4);
  flex-shrink: 0;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.35);
  text-decoration: none;
}
.footer-bottom a:hover {
  color: #ffffff;
}

/* Responsive */
@media (max-width: 1023px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scenario-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }
  .content-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .content-block.reverse {
    direction: ltr;
  }
  .content-image {
    max-width: 560px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    height: 60px;
    padding: 0 16px;
  }
  .logo-text {
    font-size: 16px;
  }
  .logo-sub {
    display: none;
  }
  .logo-mark {
    width: 32px;
    height: 32px;
    font-size: 17px;
    border-radius: 8px;
  }
  .main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-surface);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 32px 24px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 99;
    overflow-y: auto;
    border-top: 1px solid var(--color-border);
  }
  .main-nav.open {
    transform: translateX(0);
  }
  .main-nav a {
    padding: 16px 12px;
    font-size: 17px;
    border-radius: 8px;
  }
  .main-nav a.active::after {
    left: 12px;
    right: auto;
    width: 24px;
  }
  .nav-cta-mobile {
    display: block;
    margin-top: auto;
    padding-top: 24px;
  }
  .nav-cta-mobile .btn {
    width: 100%;
  }
  .header-right .status-badge,
  .header-right .btn-primary {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .page-banner {
    padding: 48px 0;
  }
  .page-banner h1 {
    font-size: 30px;
  }
  .page-banner p {
    font-size: 15px;
  }
  .content-wrap {
    padding: 64px 0 32px;
  }
  .content-block {
    margin-bottom: 48px;
    gap: 24px;
  }
  .content-text h2 {
    font-size: 22px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .features, .scenarios, .related, .faq-section, .contact-section {
    padding: 64px 0;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  .related-item {
    flex-wrap: wrap;
    gap: 12px;
  }
  .related-thumb {
    width: 100%;
    height: 140px;
  }
  .related-item .arrow {
    display: none;
  }
  .contact-form {
    padding: 24px 20px;
  }
  .form-submit {
    width: 100%;
  }
  .form-submit .btn {
    width: 100%;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .cta-inline {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-inline .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
}