/* roulang page: index */
:root {
  --brand-main: #1B3A5C;
  --brand-dark: #102A44;
  --brand-light: #E9EFF6;
  --accent: #2FA88C;
  --accent-light: #E0F4EF;
  --gold: #C9A96A;
  --bg: #F5F7FA;
  --card: #FFFFFF;
  --text-main: #1F2A38;
  --text-sub: #5B6B7B;
  --text-light: #8796A6;
  --border: #E2E8F0;
  --radius-card: 10px;
  --radius-btn: 6px;
  --radius-lg: 14px;
  --shadow-sm: 0 2px 8px rgba(27,58,92,0.05);
  --shadow-md: 0 12px 28px rgba(27,58,92,0.10);
  --shadow-lg: 0 16px 48px rgba(27,58,92,0.12);
  --transition: all 0.3s ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  padding: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container {
  max-width: 1280px;
  padding-left: 24px;
  padding-right: 24px;
}
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  margin-top: 0;
  margin-bottom: 0;
}
p {
  margin-top: 0;
  margin-bottom: 0;
}
.btn {
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 28px;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: var(--brand-main);
  color: #fff;
}
.btn-primary:hover {
  background: var(--brand-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.7);
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border-color: #fff;
}
.btn-nav {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}
.section-padding {
  padding: 96px 0;
}
.section-header {
  margin-bottom: 48px;
}
.section-header .section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-main);
  background: var(--brand-light);
  border-radius: 999px;
  padding: 4px 16px;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.section-header h2 {
  font-size: 29px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
  position: relative;
  padding-bottom: 16px;
}
.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 3px;
  background: var(--brand-main);
}
.section-header .section-sub {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 640px;
}
/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  height: 72px;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid rgba(255,255,255,0.18);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(255,255,255,0.96);
  box-shadow: 0 4px 16px rgba(27,58,92,0.06);
  border-bottom-color: transparent;
}
.site-header.scrolled .navbar-brand .brand-text {
  color: var(--brand-main);
}
.site-header.scrolled .nav-link {
  color: var(--text-main);
}
.site-header.scrolled .search-toggle svg {
  stroke: var(--brand-main);
}
.site-header.scrolled .navbar-toggler .toggler-bar {
  background: var(--brand-main);
}
.navbar {
  padding: 0;
  height: 72px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  margin: 0;
}
.navbar-brand svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
  transition: var(--transition);
}
.navbar-nav {
  gap: 0;
}
.nav-item {
  margin: 0 16px;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  padding: 8px 4px !important;
  position: relative;
  display: inline-block;
  transition: var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.nav-link:hover,
.nav-link.active {
  color: #fff;
}
.nav-link.active::after {
  width: 20px;
}
.site-header.scrolled .nav-link:hover,
.site-header.scrolled .nav-link.active {
  color: var(--brand-main);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.search-toggle {
  background: transparent;
  border: none;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}
.search-toggle svg {
  width: 20px;
  height: 20px;
  stroke: rgba(255,255,255,0.7);
  transition: var(--transition);
}
.site-header.scrolled .search-toggle svg {
  stroke: var(--brand-main);
}
.search-box {
  position: absolute;
  right: 120px;
  top: 56px;
  background: #fff;
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  padding: 8px 12px;
  width: 240px;
  display: none;
  border: 1px solid var(--border);
}
.search-box.active {
  display: block;
}
.search-box input {
  border: none;
  outline: none;
  width: 100%;
  font-size: 14px;
  color: var(--text-main);
  background: transparent;
}
.navbar-toggler {
  border: none;
  padding: 8px;
  width: 42px;
  height: 42px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
}
.navbar-toggler:focus {
  box-shadow: none;
}
.toggler-bar {
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}
.site-header.scrolled .toggler-bar {
  background: var(--brand-main);
}
@media (max-width: 991.98px) {
  .navbar-collapse {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 20px 24px;
    box-shadow: var(--shadow-md);
    border-radius: 0 0 14px 14px;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }
  .navbar-nav {
    flex-direction: column;
    gap: 4px;
  }
  .nav-item {
    margin: 0;
  }
  .nav-link {
    color: var(--text-main);
    padding: 14px 8px !important;
    border-bottom: 1px solid var(--border);
  }
  .nav-link::after {
    display: none;
  }
  .nav-actions {
    padding-top: 16px;
    justify-content: space-between;
  }
  .site-header .search-toggle svg {
    stroke: var(--brand-main);
  }
  .site-header .navbar-toggler .toggler-bar {
    background: var(--brand-main);
  }
  .navbar-collapse.show {
    display: block;
  }
}
/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 720px;
  max-height: 900px;
  background: linear-gradient(90deg, rgba(15,42,68,0.82) 0%, rgba(15,42,68,0.50) 60%, rgba(15,42,68,0.15) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding-top: 72px;
}
.hero-content {
  max-width: 680px;
}
.hero-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 999px;
  padding: 6px 18px;
  margin-bottom: 24px;
  letter-spacing: 0.03em;
}
.hero h1 {
  font-size: 46px;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 20px;
}
.hero-subtitle {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold);
  background: rgba(201,169,106,0.12);
  border: 1px solid rgba(201,169,106,0.35);
  border-radius: 999px;
  padding: 4px 14px;
  margin-left: 4px;
}
.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.6);
  font-size: 12px;
  letter-spacing: 0.1em;
}
.hero-scroll svg {
  width: 22px;
  height: 22px;
  stroke: rgba(255,255,255,0.6);
  animation: scrollHint 1.8s ease-in-out infinite;
}
@keyframes scrollHint {
  0%, 100% { transform: translateY(0); opacity: 0.7; }
  50% { transform: translateY(8px); opacity: 1; }
}
@media (max-width: 767.98px) {
  .hero {
    min-height: 640px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .hero-actions .btn {
    width: 100%;
  }
}
/* ===== Metrics ===== */
.metrics {
  position: relative;
  z-index: 5;
  margin-top: -60px;
}
.metrics-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px 24px;
  border: 1px solid rgba(255,255,255,0.8);
}
.metric-item {
  text-align: center;
  padding: 8px 0;
}
.metric-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--gold);
  font-family: "Inter", "DIN Alternate", "Roboto", sans-serif;
  line-height: 1.2;
  margin-bottom: 6px;
}
.metric-label {
  font-size: 14px;
  color: var(--text-sub);
  font-weight: 500;
}
@media (max-width: 767.98px) {
  .metrics {
    margin-top: -40px;
  }
  .metrics-card {
    padding: 24px 16px;
  }
  .metric-num {
    font-size: 28px;
  }
}
/* ===== Latest News ===== */
.latest-news {
  padding: 96px 0 64px;
}
.news-item {
  display: flex;
  gap: 20px;
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  margin-bottom: 12px;
}
.news-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.news-thumb {
  width: 120px;
  height: 88px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-content {
  flex: 1;
  min-width: 0;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.news-badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-main);
  background: var(--brand-light);
  border-radius: 999px;
  padding: 2px 12px;
}
.news-date {
  font-size: 12px;
  color: var(--text-light);
}
.news-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-content p {
  font-size: 14px;
  color: var(--text-sub);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
  line-height: 1.6;
}
.read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-main);
  transition: var(--transition);
}
.read-more:hover {
  color: var(--accent);
  padding-left: 4px;
}
.empty-state {
  background: var(--bg);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.empty-state svg {
  width: 24px;
  height: 24px;
  stroke: var(--text-light);
  margin-bottom: 8px;
}
.empty-state p {
  font-size: 14px;
  color: var(--text-light);
}
/* 公告卡 */
.announce-card {
  background: var(--brand-light);
  border-radius: 12px;
  padding: 24px;
  height: 100%;
}
.announce-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-main);
  margin-bottom: 12px;
}
.announce-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 12px;
}
.announce-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-main);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.announce-link:hover {
  color: var(--accent);
  gap: 8px;
}
@media (max-width: 767.98px) {
  .latest-news {
    padding: 56px 0 40px;
  }
  .news-item {
    flex-direction: column;
    gap: 12px;
  }
  .news-thumb {
    width: 100%;
    height: 140px;
  }
}
/* ===== Services ===== */
.services {
  padding: 64px 0 96px;
}
.service-card {
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  height: 100%;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.6);
}
.service-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--brand-main);
  transition: width 0.3s ease;
}
.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.service-card:hover::after {
  width: 100%;
}
.service-card .service-num {
  font-size: 24px;
  font-weight: 800;
  color: var(--border);
  display: block;
  margin-bottom: 12px;
  transition: var(--transition);
  font-family: "Inter", "Roboto", sans-serif;
}
.service-card:hover .service-num {
  color: var(--gold);
}
.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}
.service-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 16px;
}
.service-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-main);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.service-link:hover {
  gap: 8px;
  color: var(--accent);
}
.service-card-large .service-card-inner {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.service-card-large .service-card-body {
  flex: 1;
}
.service-card-img img {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-card);
  object-fit: cover;
  flex-shrink: 0;
}
.service-card-mirror .service-card-inner {
  flex-direction: row-reverse;
}
.services .row {
  --bs-gutter-y: 24px;
}
@media (max-width: 991.98px) {
  .service-card-large .service-card-inner,
  .service-card-mirror .service-card-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .service-card-img img {
    width: 100%;
    height: 120px;
  }
}
@media (max-width: 767.98px) {
  .services {
    padding: 40px 0 56px;
  }
}
/* ===== Comparison ===== */
.comparison {
  padding: 96px 0;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.comparison-inner {
  display: flex;
  flex-direction: column;
}
.comparison-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
}
.comparison-head h2 {
  font-size: 29px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}
.comparison-head p {
  font-size: 14px;
  color: var(--text-sub);
}
.comparison-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  background: rgba(201,169,106,0.12);
  border: 1px solid rgba(201,169,106,0.3);
  border-radius: 999px;
  padding: 4px 14px;
}
.comparison-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.compare-col {
  padding: 24px 32px;
}
.compare-col-right {
  border-left: 1px solid var(--border);
}
.compare-col-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-sub);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.compare-col-right .compare-col-title {
  color: var(--brand-main);
}
.compare-col-title svg {
  width: 18px;
  height: 18px;
}
.compare-row {
  margin-bottom: 24px;
}
.compare-row:last-child {
  margin-bottom: 0;
}
.compare-row-label {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.compare-row-value {
  font-size: 16px;
  font-weight: 800;
  color: var(--brand-main);
  font-family: "Inter", "Roboto", sans-serif;
}
.compare-bar {
  height: 10px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
}
.compare-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--border);
  transition: width 0.8s ease;
}
.compare-col-right .compare-bar-fill {
  background: linear-gradient(90deg, var(--brand-main) 0%, var(--accent) 100%);
}
.compare-note {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 32px;
  text-align: center;
}
.compare-more {
  text-align: center;
  margin-top: 20px;
}
.compare-more a {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-main);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.compare-more a:hover {
  gap: 8px;
  color: var(--accent);
}
@media (max-width: 991.98px) {
  .comparison {
    padding: 56px 24px;
  }
  .comparison-columns {
    grid-template-columns: 1fr;
  }
  .compare-col-right {
    border-left: none;
    border-top: 1px solid var(--border);
    margin-top: 24px;
    padding-top: 32px;
  }
}
@media (max-width: 767.98px) {
  .comparison {
    padding: 40px 16px;
    margin: 0 12px;
  }
  .compare-col {
    padding: 16px;
  }
}
/* ===== FAQ ===== */
.faq-section {
  padding: 96px 0;
}
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  background: #F0F3F7;
  border-radius: 16px;
  padding: 40px;
}
.faq-item {
  background: #fff;
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.faq-item.active {
  box-shadow: var(--shadow-sm);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  cursor: pointer;
  user-select: none;
}
.faq-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand-light);
  color: var(--brand-main);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: "Inter", "Roboto", sans-serif;
}
.faq-question h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  flex: 1;
  margin: 0;
}
.faq-icon {
  width: 20px;
  height: 20px;
  position: relative;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--text-sub);
  border-radius: 2px;
}
.faq-icon::before {
  width: 14px;
  height: 2px;
  top: 9px;
  left: 3px;
}
.faq-icon::after {
  width: 2px;
  height: 14px;
  top: 3px;
  left: 9px;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px 68px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  background: var(--accent-light);
  border-radius: 0 0 10px 10px;
}
.faq-item.active .faq-answer {
  max-height: 300px;
}
@media (max-width: 767.98px) {
  .faq-section {
    padding: 56px 0;
  }
  .faq-wrap {
    padding: 20px 16px;
  }
  .faq-question {
    padding: 14px 16px;
  }
  .faq-answer-inner {
    padding: 0 16px 16px 52px;
  }
}
/* ===== Contact / Form ===== */
.contact-section {
  padding: 96px 0;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.contact-info-wrap h2 {
  font-size: 29px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}
.contact-info-wrap .contact-lead {
  font-size: 15px;
  color: var(--text-sub);
  margin-bottom: 32px;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--brand-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--brand-main);
}
.contact-item .label {
  font-size: 12px;
  color: var(--text-light);
}
.contact-item .value {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}
.contact-social {
  display: flex;
  gap: 10px;
  margin-top: 28px;
}
.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.social-icon svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-light);
  transition: var(--transition);
}
.social-icon:hover {
  background: var(--brand-main);
  border-color: var(--brand-main);
}
.social-icon:hover svg {
  stroke: #fff;
}
.form-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 32px;
  border: 1px solid var(--border);
}
.form-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}
.form-label .required {
  color: #D64545;
  margin-left: 2px;
}
.form-control {
  height: 48px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border);
  font-size: 15px;
  color: var(--text-main);
  padding: 0 16px;
}
.form-control:focus {
  border-color: var(--brand-main);
  box-shadow: 0 0 0 3px rgba(27,58,92,0.10);
  outline: none;
}
.form-control::placeholder {
  color: var(--text-light);
}
textarea.form-control {
  height: auto;
  min-height: 96px;
  padding: 12px 16px;
  resize: vertical;
}
.form-select {
  height: 48px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border);
  font-size: 15px;
  color: var(--text-main);
  padding: 0 16px;
  background-color: #fff;
}
.form-select:focus {
  border-color: var(--brand-main);
  box-shadow: 0 0 0 3px rgba(27,58,92,0.10);
}
.form-row {
  margin-bottom: 20px;
}
.form-submit {
  margin-top: 8px;
}
.form-submit .btn {
  width: 100%;
}
.form-tip {
  font-size: 12px;
  color: var(--text-light);
  text-align: center;
  margin-top: 12px;
}
.form-alert {
  display: none;
  height: 44px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 500;
  align-items: center;
  padding: 0 16px;
  margin-bottom: 16px;
}
.form-alert.success {
  background: #E2F7EC;
  color: #1B7F4C;
}
.form-alert.error {
  background: #FCEEEE;
  color: #C0392B;
}
.form-alert.show {
  display: flex;
}
@media (max-width: 767.98px) {
  .contact-section {
    padding: 56px 16px;
    margin: 0 12px;
  }
  .form-card {
    padding: 20px;
  }
}
/* ===== Footer ===== */
.site-footer {
  background: var(--brand-dark);
  color: rgba(255,255,255,0.7);
  padding-top: 64px;
  margin-top: 96px;
}
.site-footer .footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.site-footer .footer-brand svg {
  width: 28px;
  height: 28px;
}
.site-footer .footer-brand .brand-text {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social .social-icon {
  border-color: rgba(255,255,255,0.2);
}
.footer-social .social-icon svg {
  stroke: rgba(255,255,255,0.6);
}
.footer-social .social-icon:hover {
  background: #fff;
  border-color: #fff;
}
.footer-social .social-icon:hover svg {
  stroke: var(--brand-dark);
}
.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-contact-list li {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.footer-contact-list svg {
  width: 16px;
  height: 16px;
  stroke: rgba(255,255,255,0.5);
  flex-shrink: 0;
  margin-top: 3px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  margin-top: 48px;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copyright {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}
.footer-legal {
  display: flex;
  gap: 20px;
}
.footer-legal a {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer-legal a:hover {
  color: #fff;
}
@media (max-width: 991.98px) {
  .site-footer {
    padding-top: 48px;
    margin-top: 56px;
  }
  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }
}
/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  background: var(--brand-main);
  border-color: var(--brand-main);
}
.back-to-top svg {
  width: 18px;
  height: 18px;
  stroke: var(--brand-main);
  transition: var(--transition);
}
.back-to-top:hover svg {
  stroke: #fff;
}
@media (max-width: 767.98px) {
  .back-to-top {
    bottom: 16px;
    right: 16px;
  }
}
/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
/* ===== Global responsive ===== */
@media (max-width: 767.98px) {
  .section-padding {
    padding: 56px 0;
  }
  .section-header h2 {
    font-size: 24px;
  }
  .section-header {
    margin-bottom: 32px;
  }
  .hero-tag {
    font-size: 12px;
  }
}

/* roulang page: article */
:root {
  --brand-main: #1B3A5C;
  --brand-dark: #102A44;
  --brand-light: #E9EFF6;
  --accent: #2FA88C;
  --accent-light: rgba(47,168,140,0.08);
  --gold: #C9A96A;
  --bg: #F5F7FA;
  --card: #FFFFFF;
  --text-main: #1F2A38;
  --text-sub: #5B6B7B;
  --text-light: #8796A6;
  --border: #E2E8F0;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Inter", "DIN Alternate", "Roboto", sans-serif;
  --radius-sm: 6px;
  --radius-card: 10px;
  --radius-lg: 14px;
  --radius-pill: 999px;
  --shadow-xs: 0 2px 8px rgba(27,58,92,0.05);
  --shadow-sm: 0 4px 16px rgba(27,58,92,0.06);
  --shadow-md: 0 12px 28px rgba(27,58,92,0.10);
  --shadow-lg: 0 16px 48px rgba(27,58,92,0.12);
  --transition: all .3s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; border: 0; display: block; }
a { color: var(--brand-main); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--brand-dark); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}
.container { max-width: 1280px; padding-left: 20px; padding-right: 20px; }

/* 内页导航透明玻璃 → 实底 */
body.inner-page .site-header {
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
body.inner-page .site-header .brand-text { color: var(--brand-main); }
body.inner-page .site-header .nav-link { color: var(--text-main) !important; }
body.inner-page .site-header .search-toggle { color: var(--brand-main); }

/* 导航 */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 72px;
  z-index: 1030;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid rgba(255,255,255,0.18);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(255,255,255,0.96);
  box-shadow: var(--shadow-sm);
  border-bottom-color: transparent;
}
.site-header.scrolled .brand-text { color: var(--brand-main); }
.site-header.scrolled .nav-link { color: var(--text-main) !important; }
.site-header.scrolled .search-toggle { color: var(--brand-main); }
.site-header .navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
}
.site-header .navbar-brand svg { width: 32px; height: 32px; flex-shrink: 0; }
.site-header .navbar-brand svg path[stroke="#FFFFFF"] { transition: var(--transition); }
body.inner-page .site-header .navbar-brand svg path[stroke="#FFFFFF"],
.site-header.scrolled .navbar-brand svg path[stroke="#FFFFFF"] { stroke: var(--brand-main); }
.site-header .brand-text {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
  white-space: nowrap;
  transition: var(--transition);
}
.site-header .navbar-nav { gap: 4px; }
.site-header .nav-link {
  color: rgba(255,255,255,0.92) !important;
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  margin: 0 16px;
  position: relative;
  background: transparent !important;
}
.site-header .nav-link::after {
  content: '';
  position: absolute;
  left: 50%; bottom: -2px;
  width: 0; height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: var(--transition);
}
.site-header .nav-link:hover::after,
.site-header .nav-link.active::after { width: 24px; }
.site-header .nav-link:hover { color: var(--accent) !important; }
.site-header .nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 20px;
}
.search-toggle {
  width: 40px; height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.search-toggle:hover { background: rgba(255,255,255,0.1); color: var(--gold); }
.site-header.scrolled .search-toggle:hover,
body.inner-page .site-header .search-toggle:hover { background: var(--brand-light); color: var(--brand-main); }
.search-toggle svg { width: 20px; height: 20px; }
.search-box {
  width: 0;
  overflow: hidden;
  transition: width .35s ease;
}
.search-box.open { width: 240px; }
.search-box input {
  width: 100%;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  font-size: 14px;
  background: var(--card);
  color: var(--text-main);
  outline: none;
  transition: var(--transition);
}
.search-box input:focus {
  border-color: var(--brand-main);
  box-shadow: 0 0 0 3px rgba(27,58,92,0.10);
}
.btn-nav {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: var(--brand-main);
  color: #fff;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  border: none;
  transition: var(--transition);
}
.btn-nav:hover {
  background: var(--brand-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.btn-nav:active { transform: translateY(0); }
.navbar-toggler {
  border: none;
  padding: 8px 10px;
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}
.toggler-bar {
  width: 22px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}
body.inner-page .toggler-bar,
.site-header.scrolled .toggler-bar { background: var(--brand-main); }

/* 面包屑 */
.page-breadcrumb {
  padding: 104px 0 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.breadcrumb-nav .breadcrumb {
  margin: 0;
  padding: 0;
}
.breadcrumb-nav .breadcrumb-item {
  font-size: 14px;
  color: var(--text-sub);
}
.breadcrumb-nav .breadcrumb-item a { color: var(--text-sub); }
.breadcrumb-nav .breadcrumb-item a:hover { color: var(--brand-main); }
.breadcrumb-nav .breadcrumb-item.active {
  color: var(--brand-main);
  font-weight: 600;
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.breadcrumb-nav .breadcrumb-item + .breadcrumb-item::before {
  content: '›';
  color: var(--text-light);
  padding: 0 8px;
}

/* 页面主体 */
.page-main { padding: 32px 0 64px; }

/* 文章卡片 */
.article-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  padding: 44px 48px;
  margin-bottom: 32px;
  transition: var(--transition);
}
.article-card:hover { box-shadow: var(--shadow-sm); }
.article-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.meta-item {
  font-size: 13px;
  color: var(--text-sub);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item i { color: var(--text-light); font-size: 12px; }
.meta-item .category-badge {
  display: inline-block;
  background: var(--brand-light);
  color: var(--brand-main);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
}
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-main);
}
.article-content p {
  margin-bottom: 24px;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 3px solid var(--accent);
  color: var(--text-main);
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 28px 0 14px;
  color: var(--text-main);
}
.article-content h4 {
  font-size: 17px;
  font-weight: 700;
  margin: 24px 0 12px;
  color: var(--text-main);
}
.article-content ul,
.article-content ol {
  margin-bottom: 24px;
  padding-left: 26px;
}
.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
}
.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
}
.article-content ul li::marker { color: var(--accent); }
.article-content ol li::marker { color: var(--brand-main); font-weight: 700; }
.article-content img {
  border-radius: 8px;
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
}
.article-content blockquote {
  border-left: 4px solid var(--brand-main);
  background: var(--brand-light);
  border-radius: var(--radius-sm);
  padding: 16px 22px;
  margin: 24px 0;
  color: var(--text-sub);
  font-style: normal;
}
.article-content blockquote p { margin-bottom: 8px; }
.article-content blockquote p:last-child { margin-bottom: 0; }
.article-content a {
  color: var(--brand-main);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover { color: var(--accent); }
.article-content code {
  background: var(--brand-light);
  color: var(--brand-dark);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9em;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-content table th {
  background: var(--brand-light);
  color: var(--brand-main);
  font-weight: 700;
}

/* 文章标签 */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.article-tag {
  display: inline-block;
  background: var(--bg);
  color: var(--text-sub);
  font-size: 13px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
  cursor: default;
}
.article-tag:hover {
  background: var(--brand-light);
  color: var(--brand-main);
}

/* 文章底部导航 */
.article-bottom-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.btn-outline-primary {
  height: 46px;
  padding: 0 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-main);
  background: #fff;
  border: 1px solid var(--brand-main);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.btn-outline-primary:hover {
  background: var(--brand-light);
  color: var(--brand-dark);
  border-color: var(--brand-dark);
  transform: translateY(-1px);
}
.btn-outline-primary:active { transform: translateY(0); }
.btn-link-arrow {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-main);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.btn-link-arrow:hover { color: var(--accent); gap: 8px; }

/* 相关阅读 */
.related-section {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  padding: 36px 40px;
}
.section-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 24px;
  position: relative;
  padding-left: 16px;
}
.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 22px;
  background: var(--accent);
  border-radius: 2px;
}
.related-card {
  background: var(--bg);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.related-card .related-img-wrap {
  height: 160px;
  overflow: hidden;
  position: relative;
  background: var(--brand-light);
}
.related-card .related-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.related-card:hover .related-img-wrap img { transform: scale(1.04); }
.related-card .related-body {
  padding: 18px 18px 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.related-card h3 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-main);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card h3 a { color: var(--text-main); }
.related-card h3 a:hover { color: var(--brand-main); }
.related-card .related-date {
  margin-top: auto;
  font-size: 12px;
  color: var(--text-light);
}

/* 侧边栏 */
.sidebar { position: sticky; top: 96px; }
.sidebar-card {
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-xs);
  padding: 24px;
  margin-bottom: 24px;
  transition: var(--transition);
}
.sidebar-card:hover { box-shadow: var(--shadow-sm); }
.sidebar-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--brand-light);
}
.about-card {
  background: linear-gradient(135deg, var(--brand-light) 0%, #F0F4FA 100%);
  border: 1px solid rgba(27,58,92,0.06);
}
.about-card .about-logo {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--brand-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 14px;
}
.about-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 14px;
}
.about-card .about-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-main);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.about-card .about-link:hover { gap: 8px; color: var(--accent); }
.hot-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.hot-list li {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.hot-list li:last-child { border-bottom: none; padding-bottom: 0; }
.hot-list .hot-num {
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1.2;
  flex-shrink: 0;
  width: 22px;
  text-align: center;
}
.hot-list li:nth-child(n+4) .hot-num { color: var(--text-light); }
.hot-list li a {
  font-size: 14px;
  color: var(--text-main);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.hot-list li a:hover { color: var(--brand-main); }
.ad-card {
  border: 2px dashed var(--border);
  background: var(--bg);
  padding: 16px;
  text-align: center;
  border-radius: var(--radius-card);
}
.ad-card img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 12px;
}
.ad-card .ad-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.ad-card:hover .ad-text { gap: 10px; color: var(--accent); }

/* 内容未找到 */
.not-found-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  padding: 64px 32px;
  text-align: center;
  max-width: 640px;
  margin: 48px auto;
}
.not-found-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: var(--brand-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-main);
  font-size: 28px;
}
.not-found-card h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}
.not-found-card p {
  font-size: 15px;
  color: var(--text-sub);
  margin-bottom: 24px;
}
.btn-primary-custom {
  height: 48px;
  padding: 0 32px;
  background: var(--brand-main);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  border: none;
}
.btn-primary-custom:hover {
  background: var(--brand-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-primary-custom:active { transform: translateY(0); }

/* 页脚 */
.site-footer {
  background: var(--brand-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
  margin-top: 48px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-brand svg {
  width: 32px;
  height: 32px;
}
.footer-brand .brand-text {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 18px;
  color: rgba(255,255,255,0.6);
}
.footer-social {
  display: flex;
  gap: 12px;
}
.social-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
}
.social-icon svg {
  width: 18px;
  height: 18px;
}
.social-icon:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-3px);
}
.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-contact-list li {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-contact-list i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  margin-top: 48px;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.footer-bottom .copyright {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}
.footer-bottom .footer-legal {
  display: flex;
  gap: 16px;
}
.footer-bottom .footer-legal a {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}
.footer-bottom .footer-legal a:hover { color: var(--accent); }

/* 回到顶部 */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-main);
  font-size: 18px;
  z-index: 1020;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: var(--transition);
  border: none;
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--brand-main);
  color: #fff;
  transform: translateY(-4px);
}

/* 响应式 */
@media (max-width: 991.98px) {
  .nav-actions {
    margin-left: 0;
    margin-top: 12px;
  }
  .site-header .navbar-collapse {
    background: #fff;
    padding: 16px 20px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-md);
  }
  .site-header .nav-link {
    color: var(--text-main) !important;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    margin: 0;
    width: 100%;
  }
  .site-header .nav-link::after { display: none; }
  .search-box.open { width: 180px; }
  .article-card { padding: 28px 24px; }
  .article-title { font-size: 28px; }
  .related-section { padding: 24px; }
  .sidebar { position: static; margin-top: 24px; }
}
@media (max-width: 767.98px) {
  .page-breadcrumb { padding: 96px 0 12px; }
  .page-main { padding: 24px 0 40px; }
  .article-card { padding: 20px 16px; }
  .article-title { font-size: 24px; }
  .article-content { font-size: 15px; }
  .article-content h2 { font-size: 21px; }
  .article-content h3 { font-size: 18px; }
  .related-section { padding: 20px 16px; }
  .related-card .related-img-wrap { height: 140px; }
  .search-box.open { width: 140px; }
  .site-footer { padding-top: 48px; }
  .footer-bottom .copyright { text-align: center; margin-bottom: 8px; }
  .footer-bottom .footer-legal { justify-content: center; }
  .fmt-arrow { display: none; }
}
@media (max-width: 520px) {
  .btn-nav { padding: 0 14px; font-size: 13px; }
  .search-box.open { width: 110px; }
  .article-meta { gap: 10px; }
  .meta-item { font-size: 12px; }
  .back-to-top { right: 16px; bottom: 16px; }
}

/* roulang page: category1 */
:root {
            --brand-main: #1B3A5C;
            --brand-dark: #102A44;
            --brand-light: #E9EFF6;
            --accent: #2FA88C;
            --gold: #C9A96A;
            --bg: #F5F7FA;
            --card: #FFFFFF;
            --text-main: #1F2A38;
            --text-sub: #5B6B7B;
            --text-light: #8796A6;
            --border: #E2E8F0;
            --shadow-sm: 0 2px 8px rgba(27, 58, 92, 0.05);
            --shadow-md: 0 12px 28px rgba(27, 58, 92, 0.10);
            --shadow-lg: 0 16px 48px rgba(27, 58, 92, 0.12);
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-badge: 999px;
            --radius-lg: 14px;
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .3s ease;
        }

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

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

        input,
        select,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .container {
            max-width: 1280px;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            height: 72px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(14px) saturate(160%);
            -webkit-backdrop-filter: blur(14px) saturate(160%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }

        .site-header .container {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
            flex-shrink: 0;
        }

        .navbar-brand svg {
            width: 32px;
            height: 32px;
            display: block;
        }

        .navbar-brand .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            transition: color .3s;
            white-space: nowrap;
        }

        .navbar-brand svg path:nth-child(2) {
            stroke: #FFFFFF;
            transition: stroke .3s;
        }

        .site-header.scrolled,
        body.category-page .site-header {
            background: rgba(255, 255, 255, 0.96);
            border-bottom-color: rgba(255, 255, 255, 0.10);
            box-shadow: 0 4px 16px rgba(27, 58, 92, 0.06);
        }

        .site-header.scrolled .navbar-brand .brand-text,
        body.category-page .site-header .navbar-brand .brand-text {
            color: var(--brand-main);
        }

        .site-header.scrolled .navbar-brand svg path:nth-child(2),
        body.category-page .site-header .navbar-brand svg path:nth-child(2) {
            stroke: var(--brand-main);
        }

        .navbar {
            flex: 1;
            justify-content: center;
            padding: 0;
        }

        .navbar-nav {
            align-items: center;
            gap: 4px;
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px !important;
            margin: 0 8px;
            position: relative;
            white-space: nowrap;
            transition: color .3s;
        }

        .site-header.scrolled .navbar-nav .nav-link,
        body.category-page .site-header .navbar-nav .nav-link {
            color: var(--text-main);
        }

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

        .navbar-nav .nav-link.active {
            color: var(--gold);
            font-weight: 600;
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 2px;
            width: 20px;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
        }

        .navbar-toggler {
            border: none;
            padding: 8px;
            outline: none;
            box-shadow: none !important;
            background: transparent;
        }

        .navbar-toggler:focus {
            box-shadow: none;
        }

        .toggler-bar {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            margin: 4px 0;
            border-radius: 2px;
            transition: background .3s;
        }

        .site-header.scrolled .toggler-bar,
        body.category-page .site-header .toggler-bar {
            background: var(--text-main);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 16px;
        }

        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.85);
            transition: background .3s, color .3s;
            flex-shrink: 0;
        }

        .search-toggle svg {
            width: 20px;
            height: 20px;
        }

        .site-header.scrolled .search-toggle,
        body.category-page .site-header .search-toggle {
            color: var(--brand-main);
        }

        .search-toggle:hover {
            background: rgba(255, 255, 255, 0.10);
        }

        .site-header.scrolled .search-toggle:hover,
        body.category-page .site-header .search-toggle:hover {
            background: var(--brand-light);
        }

        .search-box {
            width: 0;
            overflow: hidden;
            transition: width .3s ease;
        }

        .search-box.open {
            width: 240px;
        }

        .search-box input {
            width: 100%;
            height: 40px;
            padding: 0 16px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 14px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--text-main);
            outline: none;
            transition: border-color .3s, box-shadow .3s;
        }

        .search-box input:focus {
            border-color: var(--brand-main);
            box-shadow: 0 0 0 3px rgba(27, 58, 92, 0.10);
        }

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

        .btn-nav {
            height: 40px;
            padding: 0 24px !important;
            border-radius: var(--radius-btn) !important;
            background: var(--brand-main) !important;
            border: none !important;
            font-size: 15px !important;
            font-weight: 600 !important;
            color: #fff !important;
            line-height: 40px;
            white-space: nowrap;
            transition: background .3s, transform .3s, box-shadow .3s;
        }

        .btn-nav:hover {
            background: var(--brand-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(27, 58, 92, 0.25);
        }

        .btn-nav:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(27, 58, 92, 0.20);
        }

        .navbar-collapse {
            align-items: center;
        }

        @media (max-width: 991px) {
            .navbar-collapse {
                position: fixed;
                top: 72px;
                left: 16px;
                right: 16px;
                background: #fff;
                border-radius: 12px;
                box-shadow: var(--shadow-md);
                padding: 20px;
                z-index: 1050;
            }
            .navbar-nav {
                align-items: stretch;
                gap: 0;
                margin-bottom: 12px;
            }
            .navbar-nav .nav-link {
                color: var(--text-main) !important;
                font-size: 15px;
                padding: 14px 12px !important;
                margin: 0;
                border-bottom: 1px solid var(--border);
            }
            .navbar-nav .nav-link:last-child {
                border-bottom: none;
            }
            .navbar-nav .nav-link.active {
                color: var(--brand-main) !important;
                background: var(--brand-light);
                border-radius: 8px 8px 0 0;
            }
            .navbar-nav .nav-link.active::after {
                display: none;
            }
            .nav-actions {
                margin-left: 0;
                padding-top: 12px;
                border-top: 1px solid var(--border);
            }
            .search-box.open {
                width: 180px;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-nav {
            padding: 0;
            margin-bottom: 24px;
        }

        .breadcrumb {
            background: transparent;
            margin-bottom: 0;
            padding: 0;
            font-size: 13px;
            color: var(--text-light);
        }

        .breadcrumb a {
            color: var(--text-sub);
            transition: color .3s;
        }

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

        .breadcrumb-item+.breadcrumb-item::before {
            content: '›';
            color: var(--text-light);
            padding: 0 8px;
        }

        .breadcrumb-item.active {
            color: var(--brand-main);
        }

        /* ===== Category Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, var(--brand-light) 0%, #F8FAFC 50%, #FFFFFF 100%);
            padding: 140px 0 56px;
            border-bottom: 1px solid var(--border);
            position: relative;
        }

        .category-hero h1 {
            font-size: 32px;
            font-weight: 800;
            color: var(--brand-main);
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .category-hero .lead {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 780px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== Section Common ===== */
        .category-content {
            padding: 64px 0 40px;
        }

        .category-process,
        .category-scenes {
            padding: 80px 0;
        }

        .category-advantages {
            padding: 80px 0;
            background: var(--brand-dark);
            color: #fff;
        }

        .category-faq {
            padding: 80px 0;
            background: var(--card);
        }

        .category-cta {
            padding: 60px 0 80px;
        }

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

        .section-head h2 {
            font-size: 29px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .section-head .section-line {
            display: block;
            width: 32px;
            height: 3px;
            background: var(--brand-main);
            border-radius: 2px;
        }

        .section-head.text-center {
            text-align: center;
        }

        .section-head.text-center .section-line {
            margin-left: auto;
            margin-right: auto;
        }

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

        .category-advantages .section-line {
            background: var(--gold);
        }

        /* ===== Service List (Left 7) ===== */
        .service-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .service-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--card);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: box-shadow .3s, transform .3s, border-color .3s;
        }

        .service-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--brand-main);
        }

        .service-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--border);
            font-family: "Inter", "DIN Alternate", "Roboto", sans-serif;
            flex-shrink: 0;
            min-width: 40px;
            transition: color .3s;
        }

        .service-item:hover .service-num {
            color: var(--gold);
        }

        .service-info {
            flex: 1;
        }

        .service-info h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .service-info p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.6;
        }

        .service-arrow {
            font-size: 22px;
            color: var(--brand-main);
            font-weight: 300;
            flex-shrink: 0;
            transition: transform .3s;
        }

        .service-item:hover .service-arrow {
            transform: translateX(4px);
        }

        /* ===== Sidebar (Right 5) ===== */
        .sidebar-stack {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .download-card,
        .case-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .sidebar-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
            position: relative;
            padding-left: 14px;
        }

        .sidebar-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 18px;
            background: var(--accent);
            border-radius: 2px;
        }

        .download-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            transition: background .3s;
            border-radius: 6px;
        }

        .download-item:last-child {
            border-bottom: none;
        }

        .download-item:hover {
            background: rgba(47, 168, 140, 0.04);
        }

        .download-icon {
            width: 36px;
            height: 36px;
            background: var(--brand-light);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .download-icon svg {
            width: 18px;
            height: 18px;
            stroke: var(--brand-main);
        }

        .download-name {
            flex: 1;
            font-size: 14px;
            color: var(--text-main);
            font-weight: 500;
            line-height: 1.4;
        }

        .download-size {
            font-size: 12px;
            color: var(--text-light);
            white-space: nowrap;
            font-family: "Inter", "Roboto", sans-serif;
        }

        .case-item {
            display: flex;
            gap: 14px;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            transition: background .3s;
            border-radius: 6px;
        }

        .case-item:last-child {
            border-bottom: none;
        }

        .case-item:hover {
            background: rgba(27, 58, 92, 0.03);
        }

        .case-item img {
            width: 96px;
            height: 72px;
            object-fit: cover;
            border-radius: 6px;
            flex-shrink: 0;
        }

        .case-item-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .case-item-info p {
            font-size: 13px;
            color: var(--text-sub);
            margin: 0;
        }

        /* ===== Process ===== */
        .process-step {
            background: var(--card);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            position: relative;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            height: 100%;
            transition: box-shadow .3s, transform .3s;
        }

        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .step-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--brand-light);
            font-family: "Inter", "DIN Alternate", "Roboto", sans-serif;
            line-height: 1;
            display: block;
            margin-bottom: 14px;
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== Advantages ===== */
        .advantage-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            height: 100%;
            transition: background .3s, transform .3s;
        }

        .advantage-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-3px);
        }

        .advantage-card .icon-wrap {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(47, 168, 140, 0.20);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .advantage-card .icon-wrap svg {
            width: 22px;
            height: 22px;
            stroke: var(--accent);
        }

        .advantage-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }

        .advantage-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== Scenes ===== */
        .scene-card {
            background: var(--card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            height: 100%;
            transition: box-shadow .3s, transform .3s;
        }

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

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

        .scene-info {
            padding: 20px;
        }

        .scene-info h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .scene-info p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 8px 0;
            transition: background .3s;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }

        .faq-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            padding: 12px 8px;
            margin: 0;
            gap: 16px;
            transition: color .3s;
        }

        .faq-item h3:hover {
            color: var(--brand-main);
        }

        .faq-item .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--brand-light);
            color: var(--brand-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            flex-shrink: 0;
            transition: transform .3s ease, background .3s, color .3s;
        }

        .faq-item.active h3 .faq-icon {
            transform: rotate(45deg);
            background: var(--accent);
            color: #fff;
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
            padding: 0 8px;
        }

        .faq-item.active .faq-content {
            max-height: 320px;
            padding: 0 8px 16px;
        }

        .faq-content p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: var(--brand-light);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            text-align: center;
            border: 1px solid var(--border);
        }

        .cta-box p {
            font-size: 18px;
            font-weight: 600;
            color: var(--brand-main);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .cta-links {
            display: flex;
            gap: 28px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--brand-main);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: rgba(27, 58, 92, 0.30);
            transition: color .3s, text-decoration-color .3s;
        }

        .cta-link:hover {
            color: var(--accent);
            text-decoration-color: var(--accent);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--brand-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 64px 0 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand svg {
            width: 32px;
            height: 32px;
            display: block;
        }

        .footer-brand .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 20px;
            color: rgba(255, 255, 255, 0.70);
            max-width: 360px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .social-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.20);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.70);
            transition: background .3s, border-color .3s, color .3s;
        }

        .social-icon svg {
            width: 16px;
            height: 16px;
        }

        .social-icon:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.70);
            transition: color .3s;
        }

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

        .footer-contact-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.70);
            padding: 6px 0;
            line-height: 1.5;
        }

        .footer-contact-list svg {
            width: 18px;
            height: 18px;
            stroke: rgba(255, 255, 255, 0.70);
            fill: none;
            stroke-width: 1.8;
            flex-shrink: 0;
        }

        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding: 24px 0;
        }

        .footer-bottom-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.50);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
            transition: color .3s;
            margin: 0 4px;
        }

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

        .footer-bottom .sep {
            margin: 0 4px;
            color: rgba(255, 255, 255, 0.30);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .category-hero {
                padding: 120px 0 40px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .lead {
                font-size: 15px;
            }
            .category-content,
            .category-process,
            .category-advantages,
            .category-scenes,
            .category-faq {
                padding: 56px 0;
            }
            .category-cta {
                padding: 40px 0 56px;
            }
            .section-head {
                margin-bottom: 28px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .service-item {
                padding: 20px;
                gap: 14px;
            }
            .service-num {
                font-size: 20px;
                min-width: 32px;
            }
            .process-step {
                padding: 20px;
            }
            .cta-box {
                padding: 32px 24px;
            }
            .footer-bottom-inner {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 767px) {
            .category-hero {
                padding: 110px 0 32px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .service-item {
                flex-direction: row;
                padding: 16px;
                gap: 10px;
            }
            .service-info h3 {
                font-size: 17px;
            }
            .service-info p {
                font-size: 13px;
            }
            .service-arrow {
                font-size: 18px;
            }
            .sidebar-stack {
                margin-top: 8px;
            }
            .download-card,
            .case-card {
                padding: 20px;
            }
            .case-item img {
                width: 84px;
                height: 64px;
            }
            .advantage-card {
                padding: 20px;
            }
            .scene-card img {
                height: 150px;
            }
            .faq-item h3 {
                font-size: 15px;
            }
            .cta-links {
                flex-direction: column;
                gap: 14px;
            }
            .site-footer {
                padding: 48px 0 0;
            }
            .footer-bottom {
                margin-top: 32px;
            }
        }

        @media (max-width: 400px) {
            .search-box.open {
                width: 150px;
            }
            .navbar-brand .brand-text {
                font-size: 18px;
            }
            .btn-nav {
                padding: 0 16px !important;
                font-size: 14px !important;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category2 */
:root {
      --brand-main: #1B3A5C;
      --brand-dark: #102A44;
      --brand-light: #E9EFF6;
      --accent: #2FA88C;
      --gold: #C9A96A;
      --bg: #F5F7FA;
      --card: #FFFFFF;
      --text-main: #1F2A38;
      --text-sub: #5B6B7B;
      --text-light: #8796A6;
      --border: #E2E8F0;
      --radius-card: 10px;
      --radius-btn: 6px;
      --radius-lg: 14px;
      --shadow-sm: 0 2px 8px rgba(27,58,92,0.05);
      --shadow-md: 0 6px 20px rgba(27,58,92,0.08);
      --shadow-lg: 0 16px 48px rgba(27,58,92,0.12);
      --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-num: "Inter", "DIN Alternate", "Roboto", monospace;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-cn);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text-main);
      background: var(--bg);
      overflow-x: hidden;
    }

    body.inner-page {
      background: var(--bg);
    }

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

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

    a:hover {
      color: var(--brand-dark);
    }

    .container {
      max-width: 1280px;
    }

    /* ========== 导航 ========== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 72px;
      z-index: 1030;
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(14px) saturate(160%);
      -webkit-backdrop-filter: blur(14px) saturate(160%);
      border-bottom: 1px solid rgba(255, 255, 255, 0.18);
      transition: all 0.3s ease;
    }

    .site-header .container {
      height: 100%;
    }

    .site-header.scrolled {
      background: rgba(255, 255, 255, 0.96);
      border-bottom-color: var(--border);
      box-shadow: 0 4px 16px rgba(27, 58, 92, 0.06);
    }

    body.inner-page .site-header {
      background: rgba(255, 255, 255, 0.96);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 2px 12px rgba(27, 58, 92, 0.06);
    }

    body.inner-page .site-header.scrolled {
      box-shadow: 0 6px 20px rgba(27, 58, 92, 0.08);
    }

    .navbar-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      min-width: 170px;
    }

    .navbar-brand svg {
      width: 32px;
      height: 32px;
      flex-shrink: 0;
    }

    .navbar-brand svg path:nth-child(2) {
      stroke: #FFFFFF;
      transition: stroke 0.3s ease;
    }

    body.inner-page .navbar-brand svg path:nth-child(2) {
      stroke: var(--brand-main);
    }

    .site-header.scrolled .navbar-brand svg path:nth-child(2) {
      stroke: var(--brand-main);
    }

    .brand-text {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: 1px;
      transition: color 0.3s ease;
      white-space: nowrap;
    }

    body.inner-page .brand-text,
    .site-header.scrolled .brand-text {
      color: var(--brand-main);
    }

    .navbar-nav {
      gap: 32px;
    }

    .nav-item {
      position: relative;
    }

    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: rgba(255, 255, 255, 0.92) !important;
      padding: 8px 2px !important;
      letter-spacing: 0.2px;
      position: relative;
      transition: color 0.3s ease;
    }

    body.inner-page .nav-link,
    .site-header.scrolled .nav-link {
      color: var(--text-main) !important;
    }

    .nav-link:hover {
      color: var(--gold) !important;
    }

    .nav-link.active {
      color: var(--gold) !important;
      font-weight: 600;
    }

    .nav-link.active::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      background: var(--gold);
      border-radius: 2px;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-left: 32px;
    }

    .search-toggle {
      background: transparent;
      border: none;
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: background 0.2s;
    }

    .search-toggle:hover {
      background: rgba(255, 255, 255, 0.1);
    }

    body.inner-page .search-toggle,
    .site-header.scrolled .search-toggle {
      color: var(--brand-main);
    }

    .search-toggle svg {
      width: 20px;
      height: 20px;
      color: rgba(255, 255, 255, 0.8);
      transition: color 0.3s;
    }

    body.inner-page .search-toggle svg,
    .site-header.scrolled .search-toggle svg {
      color: var(--brand-main);
    }

    .search-box {
      position: absolute;
      top: 58px;
      right: 0;
      width: 240px;
      background: #fff;
      border-radius: var(--radius-btn);
      box-shadow: var(--shadow-md);
      padding: 10px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-6px);
      transition: all 0.25s ease;
      z-index: 20;
    }

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

    .search-box input {
      width: 100%;
      height: 40px;
      border: 1px solid var(--border);
      border-radius: var(--radius-btn);
      padding: 0 14px;
      font-size: 14px;
      color: var(--text-main);
      outline: none;
    }

    .search-box input:focus {
      border-color: var(--brand-main);
      box-shadow: 0 0 0 3px rgba(27, 58, 92, 0.1);
    }

    .btn-nav {
      height: 40px;
      padding: 0 22px;
      font-size: 14px;
      border-radius: var(--radius-btn);
    }

    .navbar-toggler {
      border: none;
      padding: 0;
      width: 42px;
      height: 42px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 5px;
      background: transparent;
    }

    .navbar-toggler:focus {
      box-shadow: none;
    }

    .toggler-bar {
      width: 20px;
      height: 2px;
      background: var(--text-main);
      border-radius: 2px;
      transition: all 0.3s;
    }

    /* ========== 按钮 ========== */
    .btn {
      font-weight: 600;
      border-radius: var(--radius-btn);
      transition: all 0.25s ease;
    }

    .btn-primary {
      background: var(--brand-main);
      border: 1px solid var(--brand-main);
      color: #fff;
      height: 48px;
      padding: 0 28px;
      font-size: 15px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }

    .btn-primary:hover {
      background: var(--brand-dark);
      border-color: var(--brand-dark);
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 8px 20px rgba(16, 42, 68, 0.2);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 4px 12px rgba(16, 42, 68, 0.15);
    }

    .btn-outline-light {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.7);
      color: #fff;
      height: 48px;
      padding: 0 28px;
      font-size: 15px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.16);
      border-color: #fff;
      color: #fff;
      transform: translateY(-1px);
    }

    /* ========== 页头区 ========== */
    .category-hero {
      padding: 130px 0 48px;
      background: linear-gradient(180deg, #F0F4F9 0%, var(--bg) 100%);
      border-bottom: 1px solid var(--border);
      position: relative;
      overflow: hidden;
    }

    .category-hero::before {
      content: '';
      position: absolute;
      right: -120px;
      top: -60px;
      width: 380px;
      height: 380px;
      background: radial-gradient(circle, rgba(47, 168, 140, 0.08) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .category-hero-content {
      max-width: 860px;
      position: relative;
      z-index: 2;
    }

    .category-hero-content h1 {
      font-size: 36px;
      font-weight: 800;
      color: var(--brand-main);
      line-height: 1.3;
      margin-bottom: 12px;
      letter-spacing: 1px;
    }

    .category-hero-sub {
      font-size: 16px;
      color: var(--text-sub);
      line-height: 1.8;
      max-width: 640px;
      margin-bottom: 24px;
    }

    .category-hero-badge {
      display: inline-block;
      background: var(--brand-light);
      color: var(--brand-main);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 16px;
    }

    .category-hero-meta {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 24px;
    }

    .hero-meta-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 8px 20px;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-sub);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: var(--shadow-sm);
    }

    .hero-meta-item svg {
      width: 14px;
      height: 14px;
      color: var(--accent);
    }

    /* ========== 时间线 ========== */
    .timeline-section {
      padding: 96px 0;
      background: var(--bg);
    }

    .section-head {
      text-align: center;
      margin-bottom: 56px;
    }

    .section-head h2 {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .section-head p {
      font-size: 15px;
      color: var(--text-sub);
      max-width: 520px;
      margin: 0 auto;
    }

    .section-head::after {
      content: '';
      display: block;
      width: 48px;
      height: 3px;
      background: var(--brand-main);
      border-radius: 3px;
      margin: 20px auto 0;
    }

    .timeline {
      position: relative;
      max-width: 980px;
      margin: 0 auto;
      padding: 30px 0 20px;
    }

    .timeline::before {
      content: '';
      position: absolute;
      left: 50%;
      top: 20px;
      bottom: 20px;
      width: 2px;
      background: var(--border);
      transform: translateX(-50%);
      border-radius: 2px;
    }

    .timeline-item {
      position: relative;
      width: 50%;
      padding: 0 52px 56px 0;
    }

    .timeline-item:nth-child(even) {
      margin-left: 50%;
      padding: 0 0 56px 52px;
    }

    .timeline-item:last-child {
      padding-bottom: 0;
    }

    .timeline-dot {
      position: absolute;
      top: 34px;
      width: 14px;
      height: 14px;
      background: var(--brand-main);
      border: 3px solid #fff;
      border-radius: 50%;
      box-shadow: 0 0 0 2px var(--brand-main);
      z-index: 2;
    }

    .timeline-item:nth-child(odd) .timeline-dot {
      right: -7px;
    }

    .timeline-item:nth-child(even) .timeline-dot {
      left: -7px;
    }

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

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

    .timeline-card::before {
      content: '';
      position: absolute;
      left: 0;
      top: 28px;
      bottom: 28px;
      width: 3px;
      background: var(--brand-main);
      border-radius: 0 3px 3px 0;
      opacity: 0;
      transition: opacity 0.3s;
    }

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

    .timeline-year {
      display: inline-block;
      background: var(--gold);
      color: #fff;
      font-size: 13px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 14px;
      font-family: var(--font-num);
      letter-spacing: 0.5px;
      box-shadow: 0 4px 12px rgba(201, 169, 106, 0.3);
    }

    .timeline-card h3 {
      font-size: 20px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.5;
    }

    .timeline-card p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.8;
      margin-bottom: 0;
    }

    .timeline-card .timeline-tag {
      display: inline-block;
      background: var(--brand-light);
      color: var(--brand-main);
      font-size: 12px;
      font-weight: 500;
      padding: 3px 10px;
      border-radius: 999px;
      margin-top: 12px;
    }

    /* ========== 指标看板 ========== */
    .metrics-section {
      padding: 80px 0;
      background: var(--brand-dark);
      position: relative;
      overflow: hidden;
    }

    .metrics-section::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0;
      right: 0;
      bottom: 0;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity: 0.08;
    }

    .metrics-section .container {
      position: relative;
      z-index: 2;
    }

    .metrics-section .section-head h2 {
      color: #fff;
    }

    .metrics-section .section-head p {
      color: rgba(255, 255, 255, 0.6);
    }

    .metrics-section .section-head::after {
      background: var(--gold);
    }

    .metric-card {
      text-align: center;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      backdrop-filter: blur(6px);
      -webkit-backdrop-filter: blur(6px);
      transition: all 0.3s ease;
      min-height: 180px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
    }

    .metric-card:hover {
      background: rgba(255, 255, 255, 0.1);
      transform: translateY(-4px);
      border-color: rgba(255, 255, 255, 0.16);
    }

    .metric-num {
      font-size: 42px;
      font-weight: 800;
      color: var(--gold);
      font-family: var(--font-num);
      line-height: 1.2;
      margin-bottom: 10px;
    }

    .metric-label {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.75);
      letter-spacing: 1px;
    }

    .metric-card .metric-desc {
      font-size: 12px;
      color: rgba(255, 255, 255, 0.4);
      margin-top: 8px;
    }

    /* ========== 荣誉资质 ========== */
    .honor-section {
      padding: 96px 0;
      background: var(--bg);
    }

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

    .honor-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

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

    .honor-card .honor-media {
      position: relative;
      height: 140px;
      overflow: hidden;
      background: var(--brand-light);
    }

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

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

    .honor-card .honor-body {
      padding: 20px;
      text-align: center;
    }

    .honor-card .honor-body h3 {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .honor-card .honor-body p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 0;
    }

    /* ========== CTA ========== */
    .cta-section {
      padding: 96px 0;
      background: linear-gradient(135deg, var(--brand-dark) 0%, var(--brand-main) 100%);
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      right: -80px;
      top: -80px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(47, 168, 140, 0.15) 0%, transparent 70%);
      border-radius: 50%;
    }

    .cta-section::after {
      content: '';
      position: absolute;
      left: -100px;
      bottom: -60px;
      width: 300px;
      height: 300px;
      background: radial-gradient(circle, rgba(201, 169, 106, 0.1) 0%, transparent 70%);
      border-radius: 50%;
    }

    .cta-box {
      max-width: 720px;
      margin: 0 auto;
      text-align: center;
      position: relative;
      z-index: 2;
    }

    .cta-box h2 {
      font-size: 34px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }

    .cta-box p {
      font-size: 16px;
      color: rgba(255, 255, 255, 0.7);
      line-height: 1.8;
      margin-bottom: 32px;
    }

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

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

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

    .cta-box .btn-outline-light {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.5);
      color: #fff;
    }

    .cta-box .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: #fff;
    }

    /* ========== 页脚 ========== */
    .site-footer {
      background: var(--brand-dark);
      color: rgba(255, 255, 255, 0.7);
      padding: 72px 0 0;
      font-size: 14px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }

    .footer-brand svg {
      width: 32px;
      height: 32px;
    }

    .footer-brand .brand-text {
      color: #fff;
      font-size: 20px;
      font-weight: 800;
    }

    .footer-desc {
      color: rgba(255, 255, 255, 0.55);
      font-size: 14px;
      line-height: 1.8;
      margin-bottom: 20px;
      max-width: 320px;
    }

    .footer-social {
      display: flex;
      gap: 12px;
    }

    .social-icon {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      color: rgba(255, 255, 255, 0.6);
      transition: all 0.3s;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .social-icon:hover {
      background: var(--brand-main);
      color: #fff;
      border-color: var(--brand-main);
      transform: translateY(-2px);
    }

    .social-icon svg {
      width: 18px;
      height: 18px;
    }

    .footer-title {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 20px;
      letter-spacing: 1px;
    }

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

    .footer-links li {
      margin-bottom: 12px;
    }

    .footer-links a {
      color: rgba(255, 255, 255, 0.55);
      font-size: 14px;
      transition: all 0.2s;
      display: inline-block;
    }

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

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

    .footer-contact-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 14px;
      color: rgba(255, 255, 255, 0.55);
      font-size: 14px;
      line-height: 1.6;
    }

    .footer-contact-list li svg {
      width: 18px;
      height: 18px;
      color: var(--gold);
      flex-shrink: 0;
      margin-top: 3px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      margin-top: 48px;
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-copyright {
      font-size: 12px;
      color: rgba(255, 255, 255, 0.4);
      display: flex;
      gap: 12px;
      align-items: center;
    }

    .footer-legal {
      display: flex;
      gap: 20px;
    }

    .footer-legal a {
      color: rgba(255, 255, 255, 0.4);
      font-size: 12px;
      transition: color 0.2s;
    }

    .footer-legal a:hover {
      color: var(--gold);
    }

    /* ========== 响应式 ========== */
    @media (max-width: 991px) {
      .navbar-collapse {
        background: #fff;
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-md);
        padding: 16px 24px;
        margin-top: 10px;
        border: 1px solid var(--border);
      }

      .navbar-nav {
        gap: 0;
        margin-bottom: 12px;
      }

      .nav-item {
        border-bottom: 1px solid var(--border);
      }

      .nav-item:last-child {
        border-bottom: none;
      }

      .nav-link {
        padding: 14px 0 !important;
        font-size: 15px;
      }

      .nav-link.active::after {
        display: none;
      }

      .nav-actions {
        margin-left: 0;
        justify-content: space-between;
        width: 100%;
      }

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

      .metrics-section {
        padding: 64px 0;
      }

      .metric-card {
        min-height: 150px;
        padding: 24px;
      }

      .metric-num {
        font-size: 32px;
      }
    }

    @media (max-width: 767px) {
      .category-hero {
        padding: 100px 0 36px;
      }

      .category-hero-content h1 {
        font-size: 28px;
      }

      .category-hero-sub {
        font-size: 15px;
      }

      .timeline-section {
        padding: 64px 0;
      }

      .timeline::before {
        left: 18px;
        transform: none;
      }

      .timeline-item,
      .timeline-item:nth-child(even) {
        width: 100%;
        margin-left: 0;
        padding: 0 0 44px 56px;
      }

      .timeline-dot,
      .timeline-item:nth-child(odd) .timeline-dot,
      .timeline-item:nth-child(even) .timeline-dot {
        left: 11px;
        right: auto;
        top: 30px;
        width: 12px;
        height: 12px;
      }

      .timeline-card {
        padding: 20px;
      }

      .timeline-card h3 {
        font-size: 18px;
      }

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

      .honor-section {
        padding: 64px 0;
      }

      .cta-section {
        padding: 64px 0;
      }

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

      .cta-box .cta-btns {
        flex-direction: column;
        align-items: center;
      }

      .cta-box .btn-primary,
      .cta-box .btn-outline-light {
        width: 100%;
        max-width: 260px;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 8px;
      }
    }

    @media (max-width: 520px) {
      .honor-grid {
        grid-template-columns: 1fr;
      }

      .metric-card {
        min-height: 130px;
        padding: 20px;
      }

      .metric-num {
        font-size: 28px;
      }

      .category-hero-meta {
        flex-direction: column;
        gap: 8px;
      }

      .hero-meta-item {
        width: 100%;
      }
    }

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

/* roulang page: category3 */
:root {
            --brand-main: #1B3A5C;
            --brand-dark: #102A44;
            --brand-light: #E9EFF6;
            --accent: #2FA88C;
            --accent-light: #E6F5F1;
            --gold: #C9A96A;
            --bg: #F5F7FA;
            --card: #FFFFFF;
            --text-main: #1F2A38;
            --text-sub: #5B6B7B;
            --text-light: #8796A6;
            --border: #E2E8F0;
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-lg: 14px;
            --shadow: 0 2px 8px rgba(27, 58, 92, 0.05);
            --shadow-md: 0 12px 28px rgba(27, 58, 92, 0.10);
            --shadow-lg: 0 16px 48px rgba(27, 58, 92, 0.12);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            margin: 0;
            padding: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 16px;
        }

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

        a {
            color: var(--brand-main);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--brand-dark);
        }

        .container {
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 1200px) {
            .container {
                max-width: 1280px;
            }
        }

        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: var(--transition);
            padding: 0 24px;
            height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-width: 1px;
            border-style: solid;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            color: #fff;
            box-shadow: 0 8px 20px rgba(16, 42, 68, 0.22);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

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

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(14px) saturate(160%);
            -webkit-backdrop-filter: blur(14px) saturate(160%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.18);
            transition: var(--transition);
        }

        .site-header .container {
            height: 72px;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 0;
            padding: 0;
        }

        .site-header .navbar-brand svg {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
        }

        .site-header .navbar-brand .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            transition: color 0.3s ease;
            letter-spacing: 1px;
        }

        .site-header .navbar-brand svg path[stroke="#FFFFFF"] {
            transition: stroke 0.3s ease;
        }

        .site-header .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            padding: 8px 4px;
            position: relative;
            transition: color 0.3s ease;
        }

        .site-header .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            width: 0;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
            transform: translateX(-50%);
            transition: width 0.3s ease;
        }

        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            width: 18px;
        }

        .site-header .nav-link:hover {
            color: var(--gold);
        }

        .site-header .search-toggle {
            background: transparent;
            border: none;
            color: rgba(255, 255, 255, 0.85);
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0;
            transition: color 0.3s ease;
        }

        .site-header .search-toggle svg {
            width: 20px;
            height: 20px;
        }

        .site-header .search-toggle:hover {
            color: var(--gold);
        }

        .site-header .navbar {
            padding: 0;
        }

        .site-header .navbar-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            margin: 0;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            position: relative;
            margin-left: 24px;
        }

        .search-box {
            position: absolute;
            right: calc(100% + 12px);
            top: 50%;
            transform: translateY(-50%);
            width: 0;
            overflow: hidden;
            transition: width 0.3s ease;
            z-index: 5;
        }

        .search-box.open {
            width: 240px;
        }

        .search-box input {
            width: 100%;
            height: 38px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 0 14px;
            font-size: 14px;
            background: #fff;
            color: var(--text-main);
            outline: none;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .search-box input:focus {
            border-color: var(--brand-main);
            box-shadow: 0 0 0 3px rgba(27, 58, 92, 0.10);
        }

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

        .site-header .btn-nav {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
            border-radius: var(--radius-btn);
        }

        .site-header .navbar-toggler {
            border: none;
            padding: 6px 8px;
            display: flex;
            flex-direction: column;
            gap: 5px;
            outline: none;
            box-shadow: none;
            color: #ffffff;
            transition: color 0.3s ease;
        }

        .site-header .toggler-bar {
            width: 22px;
            height: 2px;
            background: currentColor;
            display: block;
            border-radius: 2px;
            transition: background 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 16px rgba(27, 58, 92, 0.06);
        }

        .site-header.scrolled .navbar-brand .brand-text,
        .site-header.scrolled .nav-link,
        .site-header.scrolled .search-toggle {
            color: var(--text-main);
        }

        .site-header.scrolled .nav-link.active {
            color: var(--brand-main);
        }

        .site-header.scrolled .navbar-toggler {
            color: var(--text-main);
        }

        .site-header.scrolled .navbar-brand svg path[stroke="#FFFFFF"] {
            stroke: var(--brand-main);
        }

        /* ========== 分类页3 Banner ========== */
        .page-banner {
            min-height: 360px;
            background: linear-gradient(90deg, rgba(16, 42, 68, 0.82) 0%, rgba(16, 42, 68, 0.55) 60%, rgba(16, 42, 68, 0.35) 100%),
                url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            padding: 130px 0 56px;
            display: flex;
            align-items: center;
            color: #fff;
            position: relative;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .page-banner::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 80px;
            background: linear-gradient(to bottom, transparent, rgba(245, 247, 250, 0.6));
            pointer-events: none;
        }

        .page-banner-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .page-banner .page-title {
            font-size: 32px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 1px;
            line-height: 1.3;
        }

        .page-banner .page-subtitle {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.9;
            margin-bottom: 0;
            max-width: 640px;
        }

        .case-stats-bar {
            display: flex;
            flex-wrap: wrap;
            margin-top: 28px;
            background: rgba(255, 255, 255, 0.10);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius-card);
            padding: 18px 12px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .case-stats-bar .stat-item {
            flex: 1 1 25%;
            text-align: center;
            padding: 6px 8px;
        }

        .case-stats-bar .stat-num {
            display: block;
            font-size: 28px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.2;
            font-family: "Inter", "DIN Alternate", "Roboto", sans-serif;
        }

        .case-stats-bar .stat-label {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.72);
            margin-top: 4px;
            letter-spacing: 0.5px;
        }

        /* ========== 案例卡片区 ========== */
        .case-list-section {
            padding: 72px 0 40px;
        }

        .section-head {
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: 29px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .section-bar {
            display: block;
            width: 32px;
            height: 3px;
            background: var(--brand-main);
            border-radius: 2px;
        }

        .case-card {
            background: var(--card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

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

        .case-card-media {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--brand-light);
        }

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

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

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

        .case-tag {
            display: inline-block;
            align-self: flex-start;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-main);
            background: var(--brand-light);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .case-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .case-card-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== 大横卡 ========== */
        .case-feature-section {
            padding: 24px 0 72px;
        }

        .case-feature-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: row;
            align-items: stretch;
            min-height: 260px;
            transition: var(--transition);
        }

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

        .case-feature-media {
            flex: 0 0 240px;
            min-height: 240px;
            overflow: hidden;
            background: var(--brand-light);
        }

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

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

        .case-feature-content {
            padding: 32px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }

        .case-feature-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .case-feature-content p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.9;
            margin-bottom: 0;
            max-width: 720px;
        }

        .case-feature-content .case-tag {
            margin-bottom: 16px;
        }

        /* ========== CTA 条 ========== */
        .case-cta {
            padding: 8px 0 80px;
        }

        .cta-strip {
            background: var(--brand-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.5;
        }

        .cta-strip .btn {
            min-width: 140px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--brand-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand svg {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
        }

        .footer-brand .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 1px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
            max-width: 340px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .social-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .social-icon svg {
            width: 16px;
            height: 16px;
        }

        .social-icon:hover {
            background: var(--brand-main);
            color: #ffffff;
            transform: translateY(-2px);
        }

        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.3s ease;
        }

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

        .footer-contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 2.2;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 48px;
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-legal a {
            color: rgba(255, 255, 255, 0.5);
            margin-left: 16px;
            transition: color 0.3s ease;
        }

        .footer-legal a:hover {
            color: var(--gold);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .site-header {
                height: 64px;
            }

            .site-header .container {
                height: 64px;
            }

            .site-header .navbar-collapse {
                background: #ffffff;
                border-radius: 12px;
                margin-top: 12px;
                padding: 20px 24px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border);
                max-height: calc(100vh - 80px);
                overflow-y: auto;
            }

            .site-header .nav-link {
                color: var(--text-main) !important;
                font-size: 16px;
                padding: 12px 0;
                border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            }

            .site-header .nav-link::after {
                display: none;
            }

            .site-header .navbar-nav {
                width: 100%;
                gap: 0;
                margin-bottom: 12px;
            }

            .nav-actions {
                margin-left: 0;
                padding-top: 12px;
                border-top: 1px solid var(--border);
                width: 100%;
                justify-content: flex-start;
            }

            .site-header .btn-nav {
                margin-left: auto;
            }

            .page-banner {
                min-height: 320px;
                padding: 100px 0 40px;
            }

            .case-feature-card {
                flex-direction: column;
            }

            .case-feature-media {
                min-height: 200px;
                flex: none;
            }

            .case-stats-bar .stat-item {
                flex: 1 1 50%;
            }

            .cta-strip {
                padding: 28px 24px;
            }
        }

        @media (max-width: 767.98px) {
            .page-banner .page-title {
                font-size: 28px;
            }

            .page-banner .page-subtitle {
                font-size: 13px;
            }

            .case-stats-bar .stat-num {
                font-size: 24px;
            }

            .case-list-section {
                padding: 56px 0 24px;
            }

            .case-feature-section {
                padding: 16px 0 56px;
            }

            .case-feature-content {
                padding: 24px;
            }

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

            .cta-strip {
                flex-direction: column;
                text-align: center;
            }

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

            .site-footer {
                padding-top: 48px;
            }

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

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

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .search-box.open {
                width: 200px;
            }

            .page-banner {
                min-height: 300px;
            }

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

            .case-card-body {
                padding: 16px 16px 20px;
            }

            .case-feature-card {
                border-radius: 12px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }

            html {
                scroll-behavior: auto;
            }
        }