/* roulang page: index */
:root {
  --primary: #0F766E;
  --primary-dark: #0B5C56;
  --primary-light: #E6F2F1;
  --accent: #F2A65A;
  --accent-dark: #E08E3C;
  --bg: #F8F7F4;
  --card-bg: #FFFFFF;
  --text: #1F2937;
  --text-muted: #6B7280;
  --border: #E5E7EB;
  --success: #2A9D8F;
  --error: #E76F51;
  --info: #3B82F6;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-hover: 0 12px 24px rgba(0,0,0,0.08);
  --transition: 150ms ease;
  --container-w: 1200px;
  --header-h: 68px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: 14px;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

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

.section {
  padding: 96px 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-header h2 {
  font-size: 28px;
  line-height: 36px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 28px;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-decoration: none;
  border: 2px solid transparent;
  line-height: 1.4;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

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

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

.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(242, 166, 90, 0.3);
}

.btn-accent:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  box-shadow: 0 6px 16px rgba(224, 142, 60, 0.35);
}

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

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

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

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

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

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

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

/* ========== 标签 ========== */
.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 18px;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
  white-space: nowrap;
}

.tag-accent {
  background: rgba(242, 166, 90, 0.15);
  color: var(--accent-dark);
}

.tag-gray {
  background: #F1F2F4;
  color: var(--text-muted);
}

/* ========== 导航头部 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(248, 247, 244, 0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--border);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo:hover {
  text-decoration: none;
}

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

.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.5px;
}

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

.nav-link {
  display: block;
  padding: 10px 18px;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border-bottom: 2px solid transparent;
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
  text-decoration: none;
}

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

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

.search-box {
  position: relative;
}

.search-box input {
  width: 160px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  padding: 0 38px 0 16px;
  font-size: 13px;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition), width var(--transition);
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.1);
  width: 200px;
}

.search-box i {
  position: absolute;
  top: 50%;
  right: 14px;
  transform: translateY(-50%);
  font-size: 13px;
  color: var(--text-muted);
  pointer-events: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border-radius: var(--radius-sm);
  padding: 8px;
}

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

.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);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 56px) 0 48px;
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(230, 242, 241, 0.5) 0%, rgba(248, 247, 244, 0) 60%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-content {
  max-width: 560px;
}

.hero h1 {
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero h1 .highlight {
  color: var(--primary);
  position: relative;
}

.hero-sub {
  font-size: 18px;
  line-height: 30px;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 460px;
}

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

.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  padding-top: 8px;
}

.hero-stats .stat {
  position: relative;
}

.hero-stats .stat + .stat::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 32px;
  background: var(--border);
}

.stat-num {
  display: block;
  font-size: 32px;
  line-height: 40px;
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 22px;
}

.hero-visual {
  position: relative;
  height: 480px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}

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

.hero-visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.35) 0%, rgba(15, 118, 110, 0.08) 100%);
}

.hero-visual-card {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
}

.hero-visual-card .tag {
  margin-bottom: 8px;
}

.hero-visual-card p {
  font-size: 14px;
  color: var(--text);
  line-height: 22px;
  margin-top: 4px;
}

/* ========== 三步上手 ========== */
.steps-section {
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.steps-timeline {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 960px;
  margin: 0 auto 48px;
}

.step-item {
  flex: 1;
  text-align: center;
  padding: 0 24px;
  position: relative;
}

.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 6px 16px rgba(242, 166, 90, 0.35);
  font-variant-numeric: tabular-nums;
}

.step-item h3 {
  font-size: 20px;
  line-height: 28px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.step-item p {
  font-size: 14px;
  line-height: 24px;
  color: var(--text-muted);
  max-width: 240px;
  margin: 0 auto;
}

.step-connector {
  flex: 0 0 80px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--border) 0 6px, transparent 6px 12px);
  margin-top: 28px;
  position: relative;
}

.step-connector::after {
  content: "";
  position: absolute;
  right: -4px;
  top: -4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}

.steps-cta {
  text-align: center;
}

.steps-cta .btn {
  min-width: 180px;
}

/* ========== 核心优势 ========== */
.advantages-section {
  background: var(--bg);
}

.advantages-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
}

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

.advantages-media img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.advantages-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(15, 118, 110, 0.25));
  pointer-events: none;
}

.advantages-content h2 {
  font-size: 28px;
  line-height: 36px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.advantages-content .lead {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 28px;
  margin-bottom: 28px;
}

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

.advantage-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.advantage-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

.advantage-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.advantage-item p {
  font-size: 14px;
  line-height: 22px;
  color: var(--text-muted);
}

/* ========== 案例证明 ========== */
.cases-section {
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.cases-grid {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 1080px;
  margin: 0 auto;
}

.case-card {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: 0;
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.case-card-reverse {
  grid-template-columns: 6fr 5fr;
}

.case-card-reverse .case-media {
  order: 2;
}

.case-media {
  position: relative;
  min-height: 300px;
  overflow: hidden;
}

.case-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}

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

.case-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.case-body {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-body h3 {
  font-size: 22px;
  line-height: 30px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

.case-body p {
  font-size: 15px;
  line-height: 26px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.case-metrics {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.metric-num {
  display: block;
  font-size: 32px;
  line-height: 40px;
  font-weight: 700;
  color: var(--accent-dark);
  font-variant-numeric: tabular-nums;
}

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

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

.faq-list {
  max-width: 800px;
  margin: 0 auto 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

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

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  background: transparent;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 24px;
  min-height: 52px;
  transition: color var(--transition);
}

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

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 250ms ease;
}

.faq-item.active .faq-answer {
  max-height: 240px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 24px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.faq-more {
  text-align: center;
  margin-top: 16px;
}

.faq-more a {
  font-size: 15px;
  font-weight: 500;
}

/* ========== 最新信息 ========== */
.news-section {
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.news-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 16px;
}

.news-header h2 {
  font-size: 28px;
  line-height: 36px;
  font-weight: 700;
}

.news-more {
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.news-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  text-decoration: none;
  color: var(--text);
}

.news-card:hover {
  text-decoration: none;
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: var(--primary-light);
}

.news-thumb {
  width: 160px;
  height: 120px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--primary-light);
  flex-shrink: 0;
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}

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

.news-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.news-body .tag {
  align-self: flex-start;
  margin-bottom: 8px;
}

.news-body h3 {
  font-size: 18px;
  line-height: 26px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition);
}

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

.news-body p {
  font-size: 14px;
  line-height: 22px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 10px;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

.news-meta .read-more {
  margin-left: auto;
  color: var(--primary);
  font-weight: 500;
  font-size: 13px;
}

.empty-state {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: var(--text-muted);
  background: var(--bg);
}

/* ========== CTA 开通 ========== */
.cta-section {
  background: var(--primary);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-2.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.12;
}

.cta-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 92, 86, 0.92) 0%, rgba(15, 118, 110, 0.85) 100%);
}

.cta-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.cta-left h2 {
  font-size: 32px;
  line-height: 42px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.cta-left p {
  font-size: 16px;
  line-height: 28px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  max-width: 440px;
}

.cta-points {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cta-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #fff;
  font-size: 15px;
  line-height: 24px;
}

.cta-points li i {
  color: var(--accent);
  margin-top: 5px;
  font-size: 14px;
}

.cta-form-wrap {
  background: rgba(255, 255, 255, 0.96);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-hover);
}

.cta-form-wrap h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

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

.form-group {
  margin-bottom: 16px;
}

.form-group input,
.form-group select {
  width: 100%;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.1);
}

.form-group input.error,
.form-group select.error {
  border-color: var(--error);
}

.form-error-text {
  font-size: 12px;
  color: var(--error);
  margin-top: 4px;
  line-height: 18px;
}

.form-success {
  display: none;
  background: var(--primary-light);
  border: 1px solid var(--success);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--primary-dark);
  margin-bottom: 16px;
}

.form-success.show {
  display: block;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 0;
}

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

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

.footer-brand .logo-icon {
  background: #fff;
  color: var(--primary);
}

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

.footer-brand p {
  font-size: 14px;
  line-height: 24px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 300px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

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

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

.footer-col ul li a:hover {
  color: var(--accent);
  text-decoration: none;
}

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

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 22px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact li i {
  color: var(--accent);
  margin-top: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
}

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

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .section {
    padding: 72px 0;
  }

  .hero {
    padding-top: calc(var(--header-h) + 40px);
  }

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

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

  .hero-visual {
    height: 360px;
    max-width: 640px;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px;
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--border);
    gap: 0;
  }

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

  .nav-link {
    width: 100%;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }

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

  .nav-toggle {
    display: flex;
  }

  .search-box {
    display: none;
  }

  .steps-timeline {
    flex-direction: column;
    align-items: center;
    gap: 32px;
  }

  .step-item {
    max-width: 360px;
  }

  .step-connector {
    flex: 0 0 32px;
    width: 2px;
    height: 32px;
    background: repeating-linear-gradient(180deg, var(--border) 0 6px, transparent 6px 12px);
  }

  .step-connector::after {
    display: none;
  }

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

  .case-card,
  .case-card-reverse {
    grid-template-columns: 1fr;
  }

  .case-card-reverse .case-media {
    order: 0;
  }

  .case-media {
    min-height: 260px;
  }

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

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

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

  .section-header {
    margin-bottom: 40px;
  }

  .section-header h2 {
    font-size: 24px;
    line-height: 32px;
  }

  .container {
    padding: 0 16px;
  }

  .hero h1 {
    font-size: 36px;
    line-height: 1.25;
  }

  .hero-sub {
    font-size: 16px;
    line-height: 26px;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stats .stat + .stat::before {
    left: -12px;
  }

  .hero-visual {
    height: 280px;
  }

  .steps-cta .btn {
    width: 100%;
    max-width: 320px;
  }

  .advantages-media img {
    height: 260px;
  }

  .case-body {
    padding: 24px;
  }

  .case-body h3 {
    font-size: 18px;
    line-height: 26px;
  }

  .case-metrics {
    gap: 20px;
  }

  .metric-num {
    font-size: 26px;
    line-height: 34px;
  }

  .news-card {
    grid-template-columns: 100px 1fr;
    gap: 16px;
    padding: 12px;
  }

  .news-thumb {
    width: 100px;
    height: 80px;
  }

  .news-body h3 {
    font-size: 16px;
    line-height: 22px;
  }

  .news-body p {
    -webkit-line-clamp: 2;
  }

  .news-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

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

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

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

@media (max-width: 520px) {
  .btn {
    padding: 12px 20px;
  }

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

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

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

  .logo-text {
    font-size: 18px;
  }

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

  .step-num {
    width: 48px;
    height: 48px;
    font-size: 18px;
  }

  .case-media {
    min-height: 200px;
  }

  .news-card {
    grid-template-columns: 1fr;
  }

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

  .news-body h3 {
    white-space: normal;
  }
}

/* roulang page: category1 */
:root {
  --primary: #0F766E;
  --primary-dark: #0B5C56;
  --primary-light: #E6F2F1;
  --accent: #F2A65A;
  --accent-dark: #E08E3C;
  --bg: #F8F7F4;
  --card-bg: #FFFFFF;
  --text: #1F2937;
  --text-light: #6B7280;
  --border: #E5E7EB;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-hover: 0 12px 24px rgba(0,0,0,0.08);
  --transition: 150ms ease;
  --max-width: 1200px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}
ul {
  list-style: none;
}
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 32px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  gap: 8px;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(15, 118, 110, 0.3);
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-accent {
  background: var(--accent);
  color: #1F2937;
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #1F2937;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(242, 166, 90, 0.4);
}
.btn-accent:active {
  transform: translateY(1px);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  text-decoration: none;
}
.btn-white {
  background: #fff;
  color: var(--primary-dark);
}
.btn-white:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  text-decoration: none;
}
.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
}
.section-title {
  font-size: 28px;
  line-height: 36px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 24px;
}
.section-desc {
  font-size: 16px;
  line-height: 28px;
  color: var(--text-light);
  max-width: 680px;
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head .section-desc {
  margin: 0 auto;
}
.text-primary {
  color: var(--primary);
}
.text-accent {
  color: var(--accent);
}
/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  height: 72px;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo:hover {
  text-decoration: none;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}
.site-header.scrolled .logo-text {
  color: var(--text);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.main-nav .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: #334155;
  padding: 6px 2px;
  position: relative;
  transition: color var(--transition);
}
.main-nav .nav-link:hover {
  color: var(--primary);
  text-decoration: none;
}
.main-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav .nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.search-box {
  position: relative;
  display: flex;
  align-items: center;
}
.search-box input {
  width: 160px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0 38px 0 14px;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.85);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}
.search-box i {
  position: absolute;
  right: 14px;
  color: var(--text-light);
  font-size: 14px;
  pointer-events: none;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
/* Banner */
.page-banner {
  position: relative;
  padding: 160px 0 64px;
  background: linear-gradient(120deg, rgba(11, 92, 86, 0.92), rgba(15, 118, 110, 0.78)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
}
.page-banner .banner-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.page-banner h1 {
  font-size: 38px;
  line-height: 46px;
  font-weight: 700;
  margin-bottom: 16px;
}
.page-banner p {
  font-size: 16px;
  line-height: 28px;
  opacity: 0.92;
  max-width: 620px;
}
.banner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.banner-tags span {
  display: inline-block;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  padding: 5px 16px;
  font-size: 13px;
  font-weight: 500;
}
/* Section spacing */
.section-padding {
  padding: 96px 0;
}
/* Intro */
.channel-intro {
  padding: 96px 0 64px;
}
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.intro-content h2 {
  font-size: 28px;
  line-height: 38px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
}
.intro-content p {
  color: var(--text-light);
  margin-bottom: 16px;
  max-width: 520px;
}
.intro-points {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.intro-points li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
}
.intro-points i {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}
.intro-visual {
  position: relative;
}
.intro-visual .main-img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  height: 320px;
  object-fit: cover;
}
.visual-card {
  position: absolute;
  bottom: 24px;
  right: -20px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 260px;
}
.visual-card .num {
  font-size: 32px;
  line-height: 40px;
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}
.visual-card .label {
  font-size: 13px;
  color: var(--text-light);
  line-height: 20px;
}
/* Services */
.service-grid-section {
  padding: 64px 0 96px;
}
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.service-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.service-card.offset {
  margin-top: 48px;
}
.service-card .card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
}
.service-card h3 {
  font-size: 20px;
  line-height: 28px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}
.service-card p {
  font-size: 15px;
  line-height: 26px;
  color: var(--text-light);
}
.service-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
}
/* Process */
.process-section {
  padding: 96px 0;
  background: var(--primary-light);
}
.process-steps {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  margin-bottom: 48px;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 80px;
  right: 80px;
  border-top: 2px dashed rgba(15, 118, 110, 0.35);
}
.process-step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--accent);
  color: #1F2937;
  font-size: 24px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 4px 14px rgba(242, 166, 90, 0.4);
}
.process-step h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.process-step p {
  font-size: 14px;
  color: var(--text-light);
  max-width: 240px;
  margin: 0 auto;
  line-height: 24px;
}
.process-cta {
  text-align: center;
  margin-top: 24px;
}
/* Stats */
.stats-section {
  padding: 80px 0;
  background: var(--primary-dark);
  color: #fff;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}
.stats-item .num {
  font-size: 42px;
  line-height: 52px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}
.stats-item .unit {
  font-size: 20px;
  font-weight: 600;
  margin-left: 4px;
}
.stats-item .label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 8px;
}
/* FAQ */
.faq-section {
  padding: 96px 0;
}
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: transparent;
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  gap: 16px;
  min-height: 52px;
}
.faq-question .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform var(--transition), background var(--transition);
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  color: #1F2937;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
  padding: 0 24px;
}
.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 24px 20px;
}
.faq-answer p {
  font-size: 15px;
  line-height: 26px;
  color: var(--text-light);
  border-left: 3px solid var(--primary);
  padding-left: 16px;
}
.faq-more {
  text-align: center;
  margin-top: 32px;
}
.faq-more .btn {
  gap: 8px;
}
/* CTA */
.cta-section {
  padding: 80px 0;
  background: var(--primary-light);
}
.cta-box {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}
.cta-box h2 {
  font-size: 28px;
  line-height: 38px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}
.cta-box h2 span {
  color: var(--primary);
}
.cta-box p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 26px;
  margin-bottom: 24px;
  max-width: 440px;
}
.cta-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cta-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
}
.cta-points i {
  color: var(--primary);
  font-size: 14px;
}
.cta-form {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 32px;
  border: 1px solid var(--border);
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  font-size: 14px;
  background: #fff;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}
.form-select {
  appearance: none;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236B7280' d='M6 8L0 0h12z'/%3E%3C/svg%3E") no-repeat right 14px center;
}
.cta-form .btn {
  width: 100%;
  margin-top: 8px;
}
.form-tip {
  font-size: 12px;
  color: var(--text-light);
  text-align: center;
  margin-top: 12px;
}
/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.82);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand .logo-icon {
  background: var(--accent);
  color: #1F2937;
}
.footer-brand .logo-text {
  color: #fff;
}
.footer-brand p {
  font-size: 14px;
  line-height: 24px;
  color: rgba(255, 255, 255, 0.72);
  max-width: 260px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  color: rgba(255, 255, 255, 0.74);
  font-size: 14px;
  transition: color var(--transition);
}
.footer-col a:hover {
  color: var(--accent);
  text-decoration: none;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.74);
}
.footer-contact i {
  width: 18px;
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  flex-wrap: wrap;
}
/* Back to top */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow);
  z-index: 99;
}
.back-top.show {
  opacity: 1;
  visibility: visible;
}
.back-top:hover {
  background: var(--primary-dark);
}
/* Responsive */
@media (max-width: 1024px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .main-nav {
    gap: 20px;
  }
  .search-box input {
    width: 130px;
  }
  .section-padding {
    padding: 80px 0;
  }
  .process-steps {
    gap: 24px;
  }
  .process-steps::before {
    left: 60px;
    right: 60px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .site-header {
    height: 64px;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--card-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 16px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    border-radius: 0 0 12px 12px;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav .nav-link {
    font-size: 16px;
    width: 100%;
    padding: 8px 0;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .search-box {
    display: none;
  }
  .page-banner {
    padding: 140px 0 48px;
  }
  .page-banner h1 {
    font-size: 30px;
    line-height: 38px;
  }
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .visual-card {
    right: 12px;
    bottom: 12px;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .service-card.offset {
    margin-top: 0;
  }
  .process-steps {
    flex-direction: column;
    gap: 0;
    padding-left: 20px;
  }
  .process-steps::before {
    left: 36px;
    right: auto;
    top: 36px;
    bottom: 36px;
    border-top: none;
    border-left: 2px dashed rgba(15, 118, 110, 0.35);
  }
  .process-step {
    text-align: left;
    display: flex;
    gap: 20px;
    padding-bottom: 40px;
    align-items: flex-start;
  }
  .process-step .step-num {
    width: 56px;
    height: 56px;
    font-size: 20px;
    margin-bottom: 0;
    flex-shrink: 0;
  }
  .process-step .step-body {
    padding-top: 4px;
  }
  .process-step h3 {
    margin-bottom: 4px;
  }
  .process-step p {
    text-align: left;
    margin: 0;
    max-width: none;
  }
  .process-cta {
    text-align: left;
    padding-left: 76px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-box {
    grid-template-columns: 1fr;
    padding: 32px 24px;
  }
  .cta-form {
    padding: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .section-padding {
    padding: 64px 0;
  }
  .blog-card {
    flex-direction: column;
  }
  .blog-thumb {
    height: 200px;
    flex: none;
  }
}
@media (max-width: 520px) {
  .btn {
    padding: 12px 24px;
    font-size: 15px;
  }
  .page-banner h1 {
    font-size: 26px;
    line-height: 36px;
  }
  .page-banner p {
    font-size: 15px;
  }
  .visual-card {
    position: static;
    margin-top: 16px;
    max-width: 100%;
  }
  .service-card {
    padding: 24px;
  }
  .cta-box {
    padding: 24px 16px;
  }
  .cta-form {
    padding: 20px 16px;
  }
  .back-top {
    bottom: 20px;
    right: 20px;
  }
}

/* roulang page: article */
:root {
    --primary: #0F766E;
    --primary-dark: #0B5C56;
    --primary-light: #E6F2F1;
    --accent: #F2A65A;
    --accent-dark: #E08E3C;
    --bg: #F8F7F4;
    --card: #FFFFFF;
    --text: #1F2937;
    --text-secondary: #6B7280;
    --border: #E5E7EB;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 2px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-hover: 0 12px 24px rgba(0,0,0,0.08);
    --transition: 150ms ease;
    --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-stack); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 12px 28px; border-radius: var(--radius-sm); font-size: 16px; font-weight: 600;
    cursor: pointer; border: none; transition: all var(--transition); gap: 8px;
    line-height: 1.4;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(15,118,110,0.25); }
.btn-primary:focus, .btn-accent:focus, .btn-outline:focus { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-primary:active, .btn-accent:active, .btn-outline:active { transform: translateY(1px); }
.btn-accent { background: var(--accent); color: #1F2937; }
.btn-accent:hover { background: var(--accent-dark); color: #1F2937; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(242,166,90,0.35); }
.btn-outline { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); color: var(--primary-dark); }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 14px 36px; font-size: 17px; }

/* ===== 头部导航 ===== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; height: 72px; z-index: 100;
    background: rgba(255,255,255,0.88); backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(229,231,235,0.6); transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-size: 24px; font-weight: 700; color: var(--text); }
.logo-icon {
    width: 38px; height: 38px; background: var(--primary); color: #fff; border-radius: 10px;
    display: inline-flex; align-items: center; justify-content: center; font-size: 19px; font-weight: 800;
    letter-spacing: -1px; box-shadow: 0 2px 8px rgba(15,118,110,0.3);
}
.logo-text { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 30px; }
.nav-link { font-size: 15px; font-weight: 500; color: var(--text-secondary); padding: 30px 0; position: relative; white-space: nowrap; }
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { content: ''; position: absolute; bottom: 22px; left: 0; right: 0; height: 2px; background: var(--primary); border-radius: 2px; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.search-box { position: relative; }
.search-box input {
    width: 160px; height: 38px; border: 1px solid var(--border); border-radius: 999px;
    padding: 0 38px 0 16px; font-size: 14px; background: var(--bg); transition: border-color var(--transition), box-shadow var(--transition);
}
.search-box input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(15,118,110,0.12); }
.search-box i { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); font-size: 13px; color: var(--text-secondary); pointer-events: none; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 40px; height: 40px; padding: 4px; border-radius: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px auto; border-radius: 2px; transition: all var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 面包屑 ===== */
.article-breadcrumb { padding: 96px 0 0; background: var(--bg); }
.breadcrumb {
    display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 14px;
    color: var(--text-secondary); padding: 16px 0; border-bottom: 1px solid var(--border);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--text); font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 340px; }

/* ===== 文章主体 ===== */
.article-main { padding: 48px 0 72px; background: var(--bg); }
.article-wrap { max-width: 780px; margin: 0 auto; }
.article-header { padding: 32px 0 24px; }
.article-header h1 {
    font-size: clamp(28px, 3.5vw, 40px); line-height: 1.3; font-weight: 700;
    color: var(--text); margin-bottom: 18px; letter-spacing: -0.02em;
}
.article-meta {
    display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; color: var(--text-secondary);
    padding-top: 18px; border-top: 1px solid var(--border);
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--primary); font-size: 13px; }
.read-count { font-variant-numeric: tabular-nums; }
/* 正文 */
.article-body { font-size: 16px; line-height: 1.9; color: var(--text); }
.article-body h2 {
    font-size: 26px; font-weight: 700; margin: 42px 0 18px; line-height: 1.4; color: var(--text);
    padding-left: 16px; border-left: 4px solid var(--primary); letter-spacing: -0.01em;
}
.article-body h3 { font-size: 20px; font-weight: 600; margin: 32px 0 14px; line-height: 1.5; color: var(--text); }
.article-body h4 { font-size: 17px; font-weight: 600; margin: 26px 0 10px; }
.article-body p { margin-bottom: 18px; text-align: justify; }
.article-body img { border-radius: var(--radius); margin: 26px 0; box-shadow: var(--shadow); }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--primary-dark); }
.article-body blockquote {
    border-left: 4px solid var(--primary); background: var(--primary-light); padding: 18px 22px;
    margin: 26px 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary); font-size: 15px; line-height: 1.8;
}
.article-body blockquote p { margin-bottom: 0; }
.article-body table {
    width: 100%; border-collapse: collapse; margin: 26px 0; background: var(--card);
    border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow);
}
.article-body table th, .article-body table td {
    padding: 13px 16px; border: 1px solid var(--border); text-align: left; font-size: 14px;
}
.article-body table th { background: #F3F4F6; font-weight: 600; }
.article-body table tr:nth-child(even) { background: #FAFAFA; }
.article-body ul, .article-body ol { margin: 18px 0 18px 26px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-body hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }
/* 标签分享 */
.article-tags-share {
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap;
    gap: 16px; padding: 24px 0; border-top: 1px solid var(--border); margin-top: 36px;
}
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
    display: inline-flex; align-items: center; padding: 4px 14px; background: var(--primary-light);
    color: var(--primary); border-radius: 999px; font-size: 13px; font-weight: 500;
    border: 1px solid rgba(15,118,110,0.12);
}
.article-share { display: flex; align-items: center; gap: 8px; }
.share-btn {
    width: 34px; height: 34px; border-radius: 8px; background: var(--bg);
    border: 1px solid var(--border); display: inline-flex; align-items: center; justify-content: center;
    color: var(--text-secondary); font-size: 14px; transition: all var(--transition);
}
.share-btn:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(15,118,110,0.2); }
/* 空状态 */
.article-empty {
    text-align: center; padding: 80px 24px; background: var(--card);
    border-radius: var(--radius); border: 1px dashed var(--border);
    box-shadow: var(--shadow);
}
.article-empty i { font-size: 48px; color: var(--border); margin-bottom: 16px; }
.article-empty h1 { font-size: 24px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.article-empty p { color: var(--text-secondary); font-size: 15px; margin-bottom: 24px; }

/* ===== 相关推荐 ===== */
.related-section { padding: 72px 0; background: var(--bg); border-top: 1px solid var(--border); }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: 28px; font-weight: 700; color: var(--text); margin-bottom: 8px; letter-spacing: -0.01em; }
.section-head p { color: var(--text-secondary); font-size: 15px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
    background: var(--card); border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow); transition: all var(--transition); border: 1px solid rgba(229,231,235,0.8);
    display: flex; flex-direction: column;
}
.related-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: rgba(15,118,110,0.2); }
.related-card .card-img { display: block; aspect-ratio: 16 / 9; overflow: hidden; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 300ms ease; }
.related-card:hover .card-img img { transform: scale(1.04); }
.related-card .card-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.related-card .card-body h3 { font-size: 17px; font-weight: 600; line-height: 1.45; margin-bottom: 8px; }
.related-card .card-body h3 a { color: var(--text); }
.related-card .card-body h3 a:hover { color: var(--primary); }
.related-card .card-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; flex: 1; }
.related-card .card-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.read-more {
    color: var(--primary); font-weight: 500; font-size: 13px; display: inline-flex; align-items: center; gap: 4px;
    transition: gap var(--transition);
}
.read-more i { font-size: 11px; }
.related-card:hover .read-more { gap: 8px; color: var(--primary-dark); }
.article-back { text-align: center; padding: 40px 0 0; margin-top: 40px; border-top: 1px solid var(--border); }
.article-back .btn { gap: 8px; }

/* ===== CTA ===== */
.cta-section { padding: 72px 0; background: var(--primary-dark); position: relative; overflow: hidden; }
.cta-section::before {
    content: ''; position: absolute; top: -80px; right: -80px; width: 320px; height: 320px;
    border-radius: 50%; background: rgba(255,255,255,0.04); pointer-events: none;
}
.cta-box {
    display: flex; align-items: center; justify-content: space-between; gap: 48px;
    background: var(--primary); border-radius: 20px; padding: 48px 52px;
    position: relative; box-shadow: 0 16px 40px rgba(11,92,86,0.3);
}
.cta-box::after {
    content: ''; position: absolute; bottom: -60px; left: -60px; width: 180px; height: 180px;
    border-radius: 50%; background: rgba(242,166,90,0.08); pointer-events: none;
}
.cta-content { flex: 1; }
.cta-content h2 { font-size: 28px; font-weight: 700; color: #fff; margin-bottom: 12px; letter-spacing: -0.01em; }
.cta-content p { color: rgba(255,255,255,0.85); font-size: 15px; margin-bottom: 20px; max-width: 480px; }
.cta-points { display: flex; gap: 20px; flex-wrap: wrap; }
.cta-points li { display: inline-flex; align-items: center; gap: 6px; color: rgba(255,255,255,0.92); font-size: 14px; }
.cta-points i { color: var(--accent); font-size: 15px; }
.cta-action { text-align: center; flex-shrink: 0; }
.cta-action .btn { font-size: 16px; padding: 14px 32px; box-shadow: 0 6px 20px rgba(242,166,90,0.4); }
.cta-tip { color: rgba(255,255,255,0.75); font-size: 13px; margin-top: 14px; display: inline-flex; align-items: center; gap: 6px; }

/* ===== 页脚 ===== */
.site-footer {
    background: #0B2B29; color: rgba(255,255,255,0.75); padding: 64px 0 0;
}
.footer-grid {
    display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px;
    padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo .logo-text { color: #fff; }
.footer-brand .logo .logo-icon { background: var(--accent); color: #1F2937; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; color: rgba(255,255,255,0.6); }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 14px; transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-contact li { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,0.6); font-size: 14px; }
.footer-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom {
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap;
    gap: 12px; padding: 24px 0; font-size: 13px; color: rgba(255,255,255,0.45);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .main-nav { gap: 20px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .cta-box { flex-direction: column; text-align: center; padding: 40px 28px; }
    .cta-content p { margin-left: auto; margin-right: auto; }
    .cta-points { justify-content: center; }
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .site-header { height: 64px; }
    .header-inner { height: 64px; }
    .search-box { display: none; }
    .nav-toggle { display: block; }
    .main-nav {
        position: fixed; top: 64px; left: 0; right: 0; background: rgba(255,255,255,0.98);
        flex-direction: column; padding: 16px 24px 24px; gap: 0;
        border-bottom: 1px solid var(--border); box-shadow: 0 12px 24px rgba(0,0,0,0.08);
        transform: translateY(-120%); opacity: 0; visibility: hidden; transition: all 250ms ease;
    }
    .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
    .nav-link { padding: 14px 0; border-bottom: 1px solid rgba(229,231,235,0.5); width: 100%; }
    .nav-link.active::after { display: none; }
    .nav-link.active { background: var(--primary-light); border-radius: 8px; padding-left: 12px; }
    .article-breadcrumb { padding: 80px 0 0; }
    .article-main { padding: 32px 0 56px; }
    .article-meta { gap: 12px; }
    .related-grid { grid-template-columns: 1fr; }
    .article-tags-share { flex-direction: column; align-items: flex-start; }
    .cta-box { padding: 32px 20px; }
    .cta-points { flex-direction: column; align-items: flex-start; gap: 10px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
    .header-actions .btn { padding: 8px 14px; font-size: 13px; }
    .breadcrumb .current { max-width: 220px; }
    .article-header h1 { font-size: 26px; }
    .article-body { font-size: 15px; }
    .article-body h2 { font-size: 22px; }
    .article-body table { display: block; overflow-x: auto; }
    .article-back .btn { width: 100%; }
    .cta-action .btn { width: 100%; }
}

/* roulang page: category2 */
:root {
    --primary: #0F766E;
    --primary-dark: #0B5C56;
    --primary-light: #E6F2F1;
    --accent: #F2A65A;
    --accent-dark: #E08E3C;
    --bg-body: #F8F7F4;
    --bg-card: #FFFFFF;
    --text-main: #1F2937;
    --text-muted: #6B7280;
    --border-color: #E5E7EB;
    --status-success: #2A9D8F;
    --status-error: #E76F51;
    --status-info: #3B82F6;
    --radius-btn: 8px;
    --radius-card: 12px;
    --radius-img: 8px;
    --radius-badge: 999px;
    --shadow-card: 0 1px 2px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-hover: 0 12px 24px rgba(0,0,0,0.08);
    --shadow-scrolled: 0 4px 12px rgba(0,0,0,0.06);
    --transition: all 0.15s ease;
    --content-width: 1200px;
    --gap: 24px;
    --section-pad: 96px 0;
    --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-main);
    background-color: var(--bg-body);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

  body.no-scroll {
    overflow: hidden;
  }

  img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-img);
  }

  a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.15s ease;
  }
  a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
  }

  h1, h2, h3, h4, h5, h6 {
    line-height: 1.25;
    font-weight: 700;
    margin-bottom: 12px;
  }

  h1 {
    font-size: clamp(32px, 4vw, 44px);
  }
  h2 {
    font-size: 28px;
    line-height: 1.25;
  }
  h3 {
    font-size: 20px;
    line-height: 1.4;
  }
  h4 {
    font-size: 17px;
  }

  p {
    margin-bottom: 16px;
  }

  ul, ol {
    padding-left: 24px;
    margin-bottom: 16px;
  }
  li {
    margin-bottom: 8px;
  }

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

  button {
    cursor: pointer;
  }

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

  .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;
    line-height: 1.4;
    border: 1px solid transparent;
    transition: all 0.15s ease;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
  }
  .btn i {
    font-size: 14px;
  }
  .btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
  }
  .btn:active {
    transform: translateY(1px);
  }

  .btn-primary {
    background-color: var(--primary);
    color: #fff;
    border-color: var(--primary);
  }
  .btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    box-shadow: 0 6px 16px rgba(15, 118, 110, 0.25);
  }

  .btn-accent {
    background-color: var(--accent);
    color: #1F2937;
    border-color: var(--accent);
  }
  .btn-accent:hover {
    background-color: var(--accent-dark);
    border-color: var(--accent-dark);
    color: #1F2937;
    box-shadow: 0 6px 16px rgba(242, 166, 90, 0.3);
  }

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

  .btn-white {
    background-color: #fff;
    color: var(--primary);
    border-color: #fff;
  }
  .btn-white:hover {
    background-color: rgba(255,255,255,0.9);
    color: var(--primary-dark);
  }

  .btn-outline-white {
    background-color: transparent;
    border-color: rgba(255,255,255,0.7);
    color: #fff;
  }
  .btn-outline-white:hover {
    background-color: rgba(255,255,255,0.12);
    border-color: #fff;
    color: #fff;
    text-decoration: none;
  }

  .btn-sm {
    padding: 8px 16px;
    font-size: 14px;
  }
  .btn-lg {
    padding: 14px 32px;
    font-size: 16px;
  }

  .badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: var(--radius-badge);
    background-color: var(--primary-light);
    color: var(--primary-dark);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.5;
  }
  .badge-accent {
    background-color: rgba(242, 166, 90, 0.15);
    color: #B45309;
  }
  .badge-dark {
    background-color: rgba(255,255,255,0.14);
    color: #fff;
  }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: 68px;
    background-color: rgba(248, 247, 244, 0.85);
    backdrop-filter: blur(8px);
    transition: box-shadow 0.3s ease, background-color 0.3s ease;
  }
  .site-header.scrolled {
    background-color: var(--bg-body);
    box-shadow: var(--shadow-scrolled);
  }

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

  .logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-main);
    flex-shrink: 0;
  }
  .logo:hover {
    text-decoration: none;
    color: var(--text-main);
  }
  .logo-icon {
    width: 34px;
    height: 34px;
    background-color: var(--primary);
    color: #fff;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .logo-text {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.5px;
  }

  .main-nav {
    display: flex;
    gap: 28px;
    margin: 0 0 0 36px;
  }
  .nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-main);
    text-decoration: none;
    padding: 8px 2px;
    position: relative;
    transition: color 0.15s ease;
  }
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
    border-radius: 2px;
    opacity: 0;
    transform: scaleX(0.4);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .nav-link:hover {
    color: var(--primary);
    text-decoration: none;
  }
  .nav-link:hover::after {
    opacity: 0.35;
    transform: scaleX(0.8);
  }
  .nav-link.active {
    color: var(--primary);
    text-decoration: none;
  }
  .nav-link.active::after {
    opacity: 1;
    transform: scaleX(1);
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-left: auto;
  }

  .search-box {
    position: relative;
  }
  .search-box input {
    width: 160px;
    height: 38px;
    padding: 8px 14px 8px 34px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-btn);
    background-color: #fff;
    font-size: 13px;
    color: var(--text-main);
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, width 0.2s ease;
  }
  .search-box input::placeholder {
    color: #9CA3AF;
  }
  .search-box input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
    width: 200px;
  }
  .search-box i {
    position: absolute;
    left: 12px;
    top: 12px;
    font-size: 14px;
    color: #9CA3AF;
    pointer-events: none;
  }

  .nav-toggle {
    display: none;
    background: none;
    border: none;
    width: 40px;
    height: 40px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border-radius: 8px;
    cursor: pointer;
  }
  .nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--text-main);
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .nav-toggle:hover span {
    background-color: var(--primary);
  }
  .nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-footer {
    background-color: #0B2B29;
    color: rgba(255,255,255,0.85);
    padding: 64px 0 0 0;
    margin-top: 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.4fr;
    gap: 40px;
    padding-bottom: 40px;
  }

  .footer-brand .logo {
    margin-bottom: 14px;
  }
  .footer-brand .logo-icon {
    background-color: var(--accent);
    color: #1F2937;
  }
  .footer-brand .logo-text {
    color: #fff;
  }
  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.7);
    max-width: 320px;
  }

  .footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 16px;
    font-weight: 600;
  }
  .footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }
  .footer-col ul li {
    margin-bottom: 10px;
  }
  .footer-col a {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.15s ease;
  }
  .footer-col a:hover {
    color: var(--accent);
  }

  .footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255,255,255,0.75);
  }
  .footer-contact i {
    color: var(--accent);
    font-size: 14px;
    width: 18px;
    text-align: center;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.12);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 13px;
    color: rgba(255,255,255,0.55);
  }

  /* ============ 分类横幅 ============ */
  .category-banner {
    position: relative;
    margin-top: 68px;
    background: linear-gradient(105deg, var(--primary-dark) 0%, var(--primary) 70%, rgba(15, 118, 110, 0.75) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    background-blend-mode: multiply;
    padding: 80px 0 56px;
    color: #fff;
    overflow: hidden;
  }
  .category-banner::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 100%;
    background: url('/assets/images/coverpic/cover-8.png') center/cover no-repeat;
    opacity: 0.18;
    pointer-events: none;
    -webkit-mask-image: linear-gradient(to right, transparent, rgba(0,0,0,0.5));
    mask-image: linear-gradient(to right, transparent, rgba(0,0,0,0.5));
  }
  .category-banner .container {
    position: relative;
    z-index: 2;
  }
  .category-banner .banner-badge {
    display: inline-block;
    background-color: rgba(242,166,90,0.2);
    border: 1px solid rgba(242,166,90,0.35);
    color: #FDE9D2;
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 14px;
  }
  .category-banner h1 {
    font-size: clamp(30px, 4vw, 44px);
    margin-bottom: 12px;
    line-height: 1.25;
  }
  .category-banner p {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
    max-width: 640px;
    margin-bottom: 0;
  }

  .breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,0.75);
    margin-bottom: 16px;
  }
  .breadcrumb a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
  }
  .breadcrumb a:hover {
    color: #fff;
  }
  .breadcrumb i {
    font-size: 12px;
    color: rgba(255,255,255,0.5);
  }
  .breadcrumb span {
    color: #FDE9D2;
  }

  /* ============ 模块间距 ============ */
  .section {
    padding: var(--section-pad);
  }
  .section-tight {
    padding: 64px 0;
  }

  .section-head {
    max-width: 760px;
    margin-bottom: 42px;
  }
  .section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }
  .section-head .lead {
    font-size: 16px;
    color: var(--text-muted);
    margin-top: 4px;
  }
  .section-title {
    font-size: 28px;
    line-height: 1.3;
    margin-bottom: 8px;
  }
  .section-kicker {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    color: var(--accent-dark);
    margin-bottom: 10px;
    letter-spacing: 0.5px;
  }

  /* ============ 特色服务 ============ */
  .split-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }
  .split-media {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
  }
  .split-media img {
    width: 100%;
    height: 360px;
    object-fit: cover;
  }
  .split-media .media-tag {
    position: absolute;
    top: 16px;
    left: 16px;
  }
  .split-content {
    padding: 20px 0;
  }
  .split-content .badge {
    margin-bottom: 12px;
  }
  .split-content h2 {
    font-size: 28px;
    margin-bottom: 12px;
  }
  .split-content p {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 16px;
  }
  .split-list {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
  }
  .split-list li {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 15px;
  }
  .split-list li i {
    color: var(--accent-dark);
    font-size: 14px;
    margin-top: 4px;
  }

  /* ============ 流程区 ============ */
  .process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
  }
  .process-grid::before {
    content: '';
    position: absolute;
    top: 24px;
    left: 60px;
    right: 60px;
    height: 2px;
    border-top: 2px dashed var(--border-color);
  }
  .process-item {
    text-align: center;
    position: relative;
  }
  .process-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--accent);
    color: #1F2937;
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  }
  .process-item h3 {
    font-size: 18px;
    margin-bottom: 8px;
  }
  .process-item p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 0;
  }

  /* ============ 内容卡片横排 ============ */
  .content-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  .content-card {
    display: flex;
    gap: 20px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 16px;
    transition: all 0.25s ease;
    box-shadow: var(--shadow-card);
  }
  .content-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
  }
  .content-card .cover {
    width: 180px;
    height: 128px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
  }
  .content-card .info {
    flex: 1;
    display: flex;
    flex-direction: column;
  }
  .content-card .meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
  }
  .content-card h3 {
    font-size: 17px;
    margin-bottom: 4px;
    line-height: 1.4;
  }
  .content-card h3 a {
    color: var(--text-main);
  }
  .content-card h3 a:hover {
    color: var(--primary);
  }
  .content-card .summary {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
  }
  .content-card .read-more {
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }
  .content-card .read-more:hover {
    color: var(--accent-dark);
  }

  /* ============ 图文左右交替 ============ */
  .feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 48px;
  }
  .feature-row:last-child {
    margin-bottom: 0;
  }
  .feature-row.reverse .feature-media {
    order: 2;
  }
  .feature-row.reverse .feature-content {
    order: 1;
  }
  .feature-media {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
  }
  .feature-media img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.3s ease;
  }
  .feature-media:hover img {
    transform: scale(1.02);
  }
  .feature-content h3 {
    font-size: 22px;
    margin-bottom: 10px;
  }
  .feature-content p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 12px;
  }
  .feature-content ul {
    list-style: none;
    padding: 0;
    margin: 12px 0 0 0;
  }
  .feature-content ul li {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 14px;
  }
  .feature-content ul li i {
    color: var(--accent-dark);
    font-size: 13px;
    margin-top: 4px;
  }

  /* ============ 服务方向 ============ */
  .direction-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .direction-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 28px 22px;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-card);
  }
  .direction-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: rgba(15,118,110,0.3);
  }
  .direction-item .icon-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
  }
  .direction-item .icon-box i {
    font-size: 20px;
  }
  .direction-item h3 {
    font-size: 17px;
    margin-bottom: 8px;
  }
  .direction-item p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 12px;
    line-height: 1.7;
  }
  .direction-item a {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
  }
  .direction-item a:hover {
    color: var(--accent-dark);
  }

  /* ============ 内容区 ============ */
  .content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  /* ============ FAQ ============ */
  .faq-wrap {
    max-width: 800px;
  }
  .faq-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    margin-bottom: 14px;
    overflow: hidden;
    transition: box-shadow 0.2s ease;
  }
  .faq-item.active {
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
    border-color: rgba(15,118,110,0.2);
  }
  .faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--accent-dark);
  }
  .faq-item.active .faq-q {
    color: var(--primary);
  }
  .faq-q {
    width: 100%;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    text-align: left;
    transition: color 0.2s ease;
    min-height: 52px;
  }
  .faq-q:hover {
    color: var(--primary);
  }
  .faq-q:hover .faq-icon {
    color: var(--accent-dark);
  }
  .faq-icon {
    font-size: 18px;
    color: #9CA3AF;
    transition: transform 0.2s ease, color 0.2s ease;
    flex-shrink: 0;
  }
  .faq-a {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    transition: max-height 0.25s ease, padding 0.25s ease;
  }
  .faq-a-inner {
    padding-bottom: 10px;
  }

  /* ============ CTA ============ */
  .cta-block {
    background-color: var(--primary);
    border-radius: 18px;
    overflow: hidden;
    position: relative;
    background-image: url('/assets/images/backpic/back-3.webp');
    background-size: cover;
    background-position: center;
    background-blend-mode: multiply;
    color: #fff;
  }
  .cta-block .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    padding: 56px 56px;
    align-items: center;
  }
  .cta-left .badge {
    background-color: rgba(242,166,90,0.25);
    color: #FDE9D2;
    margin-bottom: 12px;
  }
  .cta-left h2 {
    color: #fff;
    font-size: 30px;
  }
  .cta-left p {
    color: rgba(255,255,255,0.85);
    font-size: 15px;
    margin-bottom: 0;
  }
  .cta-left .cta-points {
    list-style: none;
    padding: 0;
    margin: 16px 0 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
  }
  .cta-left .cta-points li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255,255,255,0.9);
  }
  .cta-left .cta-points li i {
    color: var(--accent);
  }
  .cta-right .btn {
    min-width: 180px;
  }
  .cta-note {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    margin-top: 8px;
  }

  /* ============ 返回入口 ============ */
  .back-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }

  /* ============ 响应式 ============ */
  @media (max-width: 1024px) {
    .container {
      padding: 0 20px;
    }
    .main-nav {
      gap: 18px;
      margin-left: 24px;
    }
    .search-box input {
      width: 130px;
    }
    .search-box input:focus {
      width: 150px;
    }
    .direction-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .split-wrap {
      gap: 32px;
    }
  }

  @media (max-width: 900px) {
    .main-nav {
      display: none;
    }
    .search-box {
      display: none;
    }
    .nav-toggle {
      display: flex;
    }
    .main-nav.open {
      display: flex;
      position: absolute;
      top: 68px;
      left: 0;
      right: 0;
      flex-direction: column;
      background-color: var(--bg-body);
      border-top: 1px solid var(--border-color);
      padding: 16px 24px;
      gap: 4px;
      box-shadow: 0 12px 24px rgba(0,0,0,0.06);
    }
    .main-nav.open .nav-link {
      padding: 12px 8px;
      font-size: 16px;
      border-bottom: 1px solid rgba(0,0,0,0.04);
    }
    .main-nav.open .nav-link:last-child {
      border-bottom: none;
    }
    .split-wrap {
      grid-template-columns: 1fr;
    }
    .feature-row {
      grid-template-columns: 1fr;
      gap: 28px;
    }
    .feature-row.reverse .feature-media {
      order: 1;
    }
    .feature-row.reverse .feature-content {
      order: 2;
    }
    .cta-block .container {
      grid-template-columns: 1fr;
      padding: 40px 28px;
    }
    .footer-grid {
      gap: 28px;
    }
    .process-grid {
      grid-template-columns: 1fr;
      gap: 24px;
    }
    .process-grid::before {
      display: none;
    }
    .process-item {
      text-align: left;
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }
    .process-num {
      margin: 0 0 0 0;
      flex-shrink: 0;
    }
    .process-item h3 {
      margin-bottom: 4px;
    }
  }

  @media (max-width: 768px) {
    .section {
      padding: 64px 0;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 28px;
    }
    .footer-brand p {
      max-width: 100%;
    }
    h2 {
      font-size: 24px;
    }
    .content-card {
      flex-direction: column;
    }
    .content-card .cover {
      width: 100%;
      height: 180px;
    }
    .content-grid {
      grid-template-columns: 1fr;
    }
    .direction-grid {
      grid-template-columns: 1fr;
    }
    .split-media img {
      height: 240px;
    }
    .category-banner {
      padding: 56px 0 40px;
    }
    .cta-left h2 {
      font-size: 24px;
    }
  }

  @media (max-width: 520px) {
    .container {
      padding: 0 16px;
    }
    h1 {
      font-size: 36px;
    }
    .btn {
      width: 100%;
    }
    .header-inner .btn-accent {
      width: auto;
      padding: 8px 14px;
    }
    /* 移动端导航菜单里的按钮不用全宽 */
    .main-nav.open .btn {
      display: none;
    }
    .feature-media img {
      height: 200px;
    }
    .footer-bottom {
      flex-direction: column;
      align-items: center;
    }
    .category-banner h1 {
      font-size: 30px;
    }
    .cta-right .btn {
      min-width: 0;
    }
    .back-links {
      flex-direction: column;
      align-items: stretch;
    }
    .back-links .btn {
      width: 100%;
    }
  }