/* roulang page: index */
:root {
  --brand-primary: #0F2E4D;
  --brand-primary-soft: #E8EEF4;
  --brand-accent: #C9A063;
  --brand-accent-soft: #F5EFE3;
  --brand-success: #1E9E6A;
  --bg-page: #F5F7FA;
  --bg-card: #FFFFFF;
  --bg-soft: #EDF1F5;
  --text-primary: #142433;
  --text-secondary: #4A5B6C;
  --text-muted: #8091A1;
  --border-color: #E2E8F0;
  --shadow-card: 0 4px 20px rgba(15, 46, 77, 0.06);
  --shadow-card-hover: 0 12px 32px rgba(15, 46, 77, 0.12);
  --radius-card: 16px;
  --radius-item: 8px;
  --radius-pill: 999px;
  --font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--brand-accent);
}
img {
  max-width: 100%;
  display: block;
}
button, input, select {
  font-family: inherit;
  font-size: inherit;
}
.container {
  max-width: 1200px;
  padding-left: 20px;
  padding-right: 20px;
}
section {
  padding: 96px 0;
}
.section-title-wrap {
  margin-bottom: 48px;
  max-width: 640px;
}
.section-title-wrap.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-title {
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  font-weight: 700;
  color: var(--brand-primary);
  line-height: 1.4;
  margin-bottom: 12px;
}
.section-sub {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border-color);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 2px 12px rgba(15, 46, 77, 0.06);
  background: #fff;
}
.site-header .navbar {
  height: 72px;
  padding: 0;
}
.brand-main {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-primary);
  letter-spacing: 0.5px;
}
.brand-main .brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--brand-primary);
  color: var(--brand-accent);
  font-size: 16px;
  flex-shrink: 0;
}
.desktop-nav {
  gap: 28px;
  margin-left: auto;
}
.desktop-nav > a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  border-radius: 2px;
  transition: color 0.2s, border-color 0.2s;
}
.desktop-nav > a:hover,
.desktop-nav > a.active {
  color: var(--brand-primary);
  border-bottom-color: var(--brand-accent);
}
.btn-gold-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-accent);
  color: var(--brand-primary);
  font-weight: 600;
  font-size: 14px;
  border-radius: 8px;
  padding: 10px 24px;
  border: none;
  cursor: pointer;
  transition: filter 0.2s, box-shadow 0.2s, transform 0.1s;
}
.btn-gold-sm:hover {
  filter: brightness(1.06);
  box-shadow: 0 0 0 4px rgba(201, 160, 99, 0.2);
  color: var(--brand-primary);
  transform: translateY(-1px);
}
.btn-gold-sm:active {
  transform: scale(0.98);
}
.btn-gold-lg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-accent);
  color: var(--brand-primary);
  font-weight: 700;
  font-size: 16px;
  border-radius: 10px;
  padding: 14px 36px;
  border: none;
  cursor: pointer;
  transition: filter 0.2s, box-shadow 0.2s, transform 0.1s;
}
.btn-gold-lg:hover {
  filter: brightness(1.06);
  box-shadow: 0 0 0 4px rgba(201, 160, 99, 0.22);
  color: var(--brand-primary);
  transform: translateY(-2px);
}
.btn-gold-lg:active {
  transform: scale(0.98);
}
.btn-outline-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--brand-accent);
  font-weight: 600;
  font-size: 15px;
  border-radius: 10px;
  padding: 13px 34px;
  border: 1px solid var(--brand-accent);
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}
.btn-outline-gold:hover {
  background: var(--brand-accent-soft);
  color: var(--brand-primary);
  transform: translateY(-2px);
}
.btn-outline-gold:active {
  transform: scale(0.98);
}

.mobile-drawer {
  background: #fff;
  width: 320px !important;
}
.mobile-drawer .offcanvas-header {
  height: 72px;
  border-bottom: 1px solid var(--border-color);
}
.drawer-brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--brand-primary);
}
.mobile-drawer .offcanvas-body {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.drawer-link {
  display: block;
  padding: 14px 12px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  border-radius: 10px;
  transition: background 0.2s, color 0.2s;
}
.drawer-link:hover {
  background: var(--brand-primary-soft);
  color: var(--brand-primary);
}
.drawer-link.active {
  color: var(--brand-accent);
  font-weight: 700;
}
.drawer-cta {
  margin-top: 20px;
}

.hero-section {
  padding: 72px 0 40px;
  background: var(--bg-page);
  position: relative;
  overflow: hidden;
}
.hero-section .hero-row {
  align-items: center;
}
.hero-content {
  padding-right: 24px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-accent-soft);
  color: var(--brand-primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  margin-bottom: 20px;
}
.hero-badge i {
  color: var(--brand-accent);
}
.hero-title {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--brand-primary);
  line-height: 1.35;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero-title .gold-text {
  color: var(--brand-accent);
}
.hero-sub {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.hero-trust {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  font-size: 14px;
  color: var(--text-muted);
}
.hero-trust i {
  color: var(--brand-success);
  margin-right: 4px;
}
.hero-trust .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border-color);
  flex-shrink: 0;
}
.hero-media {
  position: relative;
}
.hero-media img {
  border-radius: 16px;
  box-shadow: var(--shadow-card-hover);
  width: 100%;
  height: 420px;
  object-fit: cover;
}
.hero-float-card {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: rgba(255, 255, 255, 0.96);
  border-radius: 12px;
  box-shadow: var(--shadow-card-hover);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-float-card .float-num {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--brand-primary);
  font-variant-numeric: tabular-nums;
}
.hero-float-card .float-label {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

.trust-bar {
  padding: 32px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background: #fff;
}
.trust-bar .trust-item {
  text-align: center;
  padding: 8px 0;
}
.trust-bar .trust-num {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--brand-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
}
.trust-bar .trust-num span {
  color: var(--brand-accent);
}
.trust-bar .trust-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

.features-section {
  background: var(--bg-page);
}
.feature-grid .row {
  row-gap: 24px;
}
.feature-col {
  margin-bottom: 0;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px 28px;
  height: 100%;
  border: 1px solid transparent;
  transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s;
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: var(--brand-accent-soft);
}
.feature-card .card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--brand-primary-soft);
  color: var(--brand-primary);
  font-size: 20px;
  margin-bottom: 20px;
}
.feature-card .card-icon.gold {
  background: var(--brand-accent-soft);
  color: var(--brand-accent);
}
.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.5;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}
.feature-card-lg {
  padding: 40px 36px;
}
.feature-card-lg .card-icon {
  width: 64px;
  height: 64px;
  font-size: 24px;
}
.feature-card-lg h3 {
  font-size: 1.35rem;
}
.feature-card-lg p {
  font-size: 15px;
}
.feature-card-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
  height: 100%;
}

.demo-section {
  background: #fff;
}
.demo-block {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 80px;
}
.demo-block:last-child {
  margin-bottom: 0;
}
.demo-block.reverse {
  flex-direction: row-reverse;
}
.demo-media {
  flex: 1;
}
.demo-media img {
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  width: 100%;
  height: 340px;
  object-fit: cover;
}
.demo-body {
  flex: 1;
}
.demo-body .step-label {
  display: inline-block;
  background: var(--brand-primary-soft);
  color: var(--brand-primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 4px 14px;
  margin-bottom: 16px;
}
.demo-body h3 {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 14px;
  line-height: 1.5;
}
.demo-body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}
.demo-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.demo-list li {
  position: relative;
  padding: 10px 0 10px 28px;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--border-color);
}
.demo-list li:last-child {
  border-bottom: none;
}
.demo-list li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--brand-success);
  font-size: 14px;
}

.evidences-section {
  background: var(--bg-page);
}
.evidence-grid .row {
  row-gap: 24px;
}
.evidence-card {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 28px 24px;
  text-align: center;
  height: 100%;
  border: 1px solid transparent;
  transition: box-shadow 0.25s, transform 0.25s;
}
.evidence-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}
.evidence-card .ev-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--brand-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
}
.evidence-card .ev-num .suffix {
  color: var(--brand-accent);
  font-size: 1.2rem;
  margin-left: 2px;
}
.evidence-card .ev-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
}
.testimonial-card {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px;
  height: 100%;
  border-top: 4px solid var(--brand-accent);
}
.testimonial-card .stars {
  color: var(--brand-accent);
  font-size: 14px;
  margin-bottom: 14px;
  letter-spacing: 3px;
}
.testimonial-card .ttext {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: normal;
}
.testimonial-card .tuser {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-card .tavatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--brand-primary-soft);
  color: var(--brand-primary);
  font-weight: 700;
  font-size: 15px;
}
.testimonial-card .tname {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.testimonial-card .tmeta {
  font-size: 12px;
  color: var(--text-muted);
}

.news-section {
  background: #fff;
}
.news-card {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 20px;
  margin-bottom: 16px;
  border: 1px solid transparent;
  transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
  align-items: flex-start;
}
.news-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: var(--brand-accent-soft);
}
.news-thumb {
  width: 120px;
  height: 84px;
  flex-shrink: 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--border-color);
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-body {
  flex: 1;
  min-width: 0;
}
.news-body .badge-news {
  display: inline-block;
  background: var(--brand-accent-soft);
  color: var(--brand-primary);
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  padding: 2px 10px;
  margin-bottom: 8px;
}
.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.6;
  transition: color 0.2s;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}
.news-card:hover .news-body h3 {
  color: var(--brand-accent);
}
.news-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.news-date {
  font-size: 12px;
  color: var(--text-muted);
}
.empty-state {
  background: var(--bg-soft);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-card);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
}

.pricing-section {
  background: var(--bg-page);
}
.pricing-card {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 40px 32px;
  height: 100%;
  display: flex;
  flex-direction: column;
  border: 1px solid transparent;
  transition: box-shadow 0.25s, transform 0.25s;
}
.pricing-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.pricing-card.featured {
  border-top: 4px solid var(--brand-accent);
  box-shadow: var(--shadow-card-hover);
}
.pricing-card .plan-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 6px;
}
.pricing-card .plan-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.pricing-card .plan-price {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--brand-primary);
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
  line-height: 1.3;
}
.pricing-card .plan-price .cur {
  font-size: 1.1rem;
  vertical-align: super;
  margin-right: 2px;
  color: var(--brand-accent);
}
.pricing-card .plan-price .per {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 4px;
}
.pricing-card .plan-features {
  list-style: none;
  padding: 0;
  margin: 24px 0 32px;
  flex: 1;
}
.pricing-card .plan-features li {
  position: relative;
  padding: 8px 0 8px 28px;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--border-color);
}
.pricing-card .plan-features li:last-child {
  border-bottom: none;
}
.pricing-card .plan-features li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--brand-success);
  font-size: 13px;
}
.pricing-card .btn-gold-sm,
.pricing-card .btn-outline-gold {
  width: 100%;
}

.faq-section {
  background: #fff;
}
.faq-item {
  background: var(--bg-card);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  margin-bottom: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.faq-item .faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  user-select: none;
}
.faq-item .faq-q .icon {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--brand-primary-soft);
  color: var(--brand-primary);
  font-size: 14px;
  transition: transform 0.25s ease, background 0.25s, color 0.25s;
  flex-shrink: 0;
}
.faq-item .faq-q:hover {
  color: var(--brand-accent);
}
.faq-item.active .faq-q .icon {
  transform: rotate(45deg);
  background: var(--brand-accent);
  color: #fff;
}
.faq-item .faq-a {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  display: none;
}
.faq-item .faq-a.show {
  display: block;
}

.cta-section {
  background: var(--brand-primary);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(201, 160, 99, 0.12);
}
.cta-section .cta-inner {
  position: relative;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-section h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.4;
}
.cta-section p {
  font-size: 16px;
  color: #B8C7D6;
  margin-bottom: 32px;
  line-height: 1.8;
}
.cta-section .btn-gold-lg {
  background: var(--brand-accent);
  color: var(--brand-primary);
}

.site-footer {
  background: var(--brand-primary);
  color: #B8C7D6;
  padding: 64px 0 0;
}
.site-footer .footer-brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.site-footer .footer-brand .brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--brand-accent);
  color: var(--brand-primary);
  font-size: 15px;
}
.site-footer p {
  font-size: 14px;
  line-height: 1.8;
  color: #B8C7D6;
  margin-bottom: 20px;
  max-width: 300px;
}
.site-footer .footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.site-footer .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer .footer-links li {
  margin-bottom: 10px;
}
.site-footer .footer-links a {
  font-size: 14px;
  color: #B8C7D6;
  transition: color 0.2s, padding-left 0.2s;
}
.site-footer .footer-links a:hover {
  color: var(--brand-accent);
  padding-left: 4px;
}
.site-footer .footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer .footer-contact li {
  font-size: 14px;
  color: #B8C7D6;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.site-footer .footer-contact i {
  color: var(--brand-accent);
  margin-top: 4px;
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}
.site-footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  margin-top: 48px;
  font-size: 13px;
  color: #8FA3B5;
  text-align: center;
}

.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
}
.float-cta.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.float-cta .float-ball {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--brand-accent);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 8px 24px rgba(201, 160, 99, 0.4);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}
.float-cta .float-ball:hover {
  transform: scale(1.06) rotate(5deg);
  box-shadow: 0 12px 32px rgba(201, 160, 99, 0.5);
}
.float-cta .float-ball:hover::after {
  content: "立即咨询";
  position: absolute;
  right: 68px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--brand-primary);
  color: #fff;
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 8px;
  white-space: nowrap;
  box-shadow: var(--shadow-card-hover);
}
.mobile-cta-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1040;
  background: rgba(255, 255, 255, 0.98);
  border-top: 1px solid var(--border-color);
  padding: 10px 16px;
  display: none;
  gap: 12px;
  align-items: center;
  justify-content: center;
  box-shadow: 0 -4px 20px rgba(15, 46, 77, 0.04);
}
.mobile-cta-bar .btn-gold-sm,
.mobile-cta-bar .btn-outline-gold {
  flex: 1;
  max-width: 180px;
  padding: 10px 16px;
  font-size: 14px;
}

@media (max-width: 991px) {
  section {
    padding: 56px 0;
  }
  .hero-section {
    padding-top: 48px;
  }
  .hero-media {
    margin-top: 32px;
  }
  .hero-media img {
    height: 320px;
  }
  .demo-block,
  .demo-block.reverse {
    flex-direction: column;
    gap: 32px;
    margin-bottom: 56px;
  }
  .demo-media img {
    height: 260px;
  }
  .trust-bar .trust-item {
    padding: 12px 0;
  }
}
@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .news-card {
    flex-direction: row;
    gap: 14px;
    padding: 14px;
  }
  .news-thumb {
    width: 88px;
    height: 64px;
  }
  .news-body h3 {
    font-size: 14px;
  }
  .news-body p {
    font-size: 13px;
  }
  .mobile-cta-bar {
    display: flex;
  }
  .float-cta {
    bottom: 88px;
    right: 16px;
  }
  .hero-title {
    font-size: 1.7rem;
  }
  .hero-sub {
    font-size: 16px;
  }
  .hero-actions .btn-gold-lg,
  .hero-actions .btn-outline-gold {
    width: 100%;
  }
  .feature-card-lg {
    padding: 28px 24px;
  }
  .faq-item .faq-q {
    padding: 16px;
    font-size: 15px;
  }
  .faq-item .faq-a {
    padding: 0 16px 16px;
  }
  .site-footer .footer-col {
    margin-bottom: 32px;
  }
  .site-footer .footer-bottom {
    margin-top: 24px;
  }
  .trust-bar .trust-num {
    font-size: 1.4rem;
  }
  .evidences-section .testimonial-card {
    padding: 24px;
  }
}
@media (max-width: 380px) {
  .brand-main {
    font-size: 1.05rem;
  }
  .brand-main .brand-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
  .hero-float-card {
    bottom: 12px;
    left: 12px;
    padding: 10px 14px;
  }
}

/* roulang page: category1 */
:root{
  --brand-primary:#0F2E4D;
  --brand-primary-soft:#E8EEF4;
  --brand-accent:#C9A063;
  --brand-accent-soft:#F5EFE3;
  --brand-success:#1E9E6A;
  --bg-page:#F5F7FA;
  --bg-card:#FFFFFF;
  --bg-soft:#EDF1F5;
  --text-primary:#142433;
  --text-secondary:#4A5B6C;
  --text-muted:#8091A1;
  --border-color:#E2E8F0;
  --shadow-card:0 4px 20px rgba(15,46,77,0.06);
  --shadow-card-hover:0 12px 32px rgba(15,46,77,0.12);
  --radius-card:16px;
  --radius-item:8px;
  --radius-pill:999px;
  --space-section:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.8;color:var(--text-primary);background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;transition:color .2s ease}
img{max-width:100%;display:block}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--text-primary);font-weight:700;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{max-width:1200px}
.container-lg{max-width:1200px}

/* ========== 全局导航 ========== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(226,232,240,0.7);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.scrolled{
  background:#fff;
  box-shadow:0 2px 12px rgba(15,46,77,0.06);
}
.site-header .navbar{
  min-height:72px;
  padding:10px 0;
}
.brand-main{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;font-size:1.25rem;color:var(--brand-primary);
  letter-spacing:.5px;
}
.brand-main:hover{color:var(--brand-primary)}
.brand-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:var(--brand-primary);color:var(--brand-accent);
  font-size:16px;
}
.desktop-nav{
  display:flex;align-items:center;gap:8px;margin-left:auto;
}
.desktop-nav > a{
  padding:8px 14px;font-size:15px;font-weight:500;color:var(--text-secondary);
  border-radius:var(--radius-pill);position:relative;transition:color .2s;
}
.desktop-nav > a:hover{color:var(--brand-primary);background:var(--brand-primary-soft)}
.desktop-nav > a.active{
  color:var(--brand-primary);font-weight:600;
}
.desktop-nav > a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand-accent);border-radius:2px;
}
.btn-gold-sm{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-accent);color:var(--brand-primary);
  font-size:14px;font-weight:600;padding:9px 22px;
  border-radius:var(--radius-item);border:1px solid var(--brand-accent);
  transition:filter .2s,box-shadow .2s,transform .2s;
  white-space:nowrap;
}
.btn-gold-sm:hover{
  color:var(--brand-primary);
  filter:brightness(1.06);
  box-shadow:0 0 0 4px rgba(201,160,99,0.2);
  transform:translateY(-1px);
}
.btn-gold-sm:active{transform:scale(.98)}
.navbar-toggler{border:none;padding:8px;border-radius:8px;background:transparent}
.navbar-toggler:focus{box-shadow:none}
.navbar-toggler-icon{
  width:22px;height:22px;
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15,46,77,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.mobile-drawer{
  background:#fff;
  border-right:1px solid var(--border-color);
}
.mobile-drawer .offcanvas-header{
  padding:20px 24px;
  border-bottom:1px solid var(--border-color);
}
.mobile-drawer .offcanvas-body{
  padding:16px 24px;
  display:flex;flex-direction:column;gap:4px;
}
.mobile-drawer .offcanvas-body a{
  display:flex;align-items:center;
  height:52px;padding:0 12px;
  font-size:16px;font-weight:500;color:var(--text-primary);
  border-radius:8px;
}
.mobile-drawer .offcanvas-body a:hover{background:var(--brand-primary-soft);color:var(--brand-primary)}
.mobile-drawer .offcanvas-body a.active{background:var(--brand-accent-soft);color:var(--brand-primary);font-weight:600}
.btn-close{filter:none;opacity:.6}
.btn-close:focus{box-shadow:none}

/* ========== 页面头 ========== */
.page-hero{
  position:relative;
  background:var(--bg-page);
  padding:88px 0 64px;
  overflow:hidden;
}
.page-hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.12;
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,#fff 0%,rgba(245,247,250,0.92) 100%);
}
.page-hero .container{position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-accent-soft);color:var(--brand-primary);
  border:1px solid rgba(201,160,99,0.35);
  padding:6px 16px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;letter-spacing:.5px;
  margin-bottom:20px;
}
.hero-badge i{color:var(--brand-accent)}
.page-title{
  font-size:clamp(1.9rem,4vw,2.8rem);
  font-weight:700;color:var(--brand-primary);
  line-height:1.25;
  border-left:4px solid var(--brand-accent);
  padding-left:20px;
}
.hero-sub{
  margin-top:18px;max-width:680px;
  font-size:18px;color:var(--text-secondary);line-height:1.8;
}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:20px;
  margin-top:40px;padding-top:32px;
  border-top:1px solid var(--border-color);
}
.stat-item{
  flex:1;min-width:120px;
  background:var(--bg-card);
  border-radius:14px;padding:18px 16px;
  box-shadow:var(--shadow-card);
  transition:box-shadow .3s,transform .3s;
  text-align:center;
}
.stat-item:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px)}
.stat-num{
  font-size:28px;font-weight:700;color:var(--brand-primary);
  font-variant-numeric:tabular-nums;
}
.stat-label{font-size:13px;color:var(--text-muted);margin-top:2px}

/* ========== 频道子导航 ========== */
.channel-tabs{
  background:#fff;
  border-bottom:1px solid var(--border-color);
  padding:20px 0;
}
.tabs-wrap{
  display:flex;flex-wrap:wrap;gap:8px;
}
.tab-link{
  display:inline-flex;align-items:center;
  padding:8px 20px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:500;color:var(--text-secondary);
  background:var(--bg-page);
  border:1px solid transparent;
  transition:all .25s ease;
  cursor:pointer;
}
.tab-link:hover{color:var(--brand-primary);background:var(--brand-primary-soft)}
.tab-link.active{
  background:var(--brand-primary);color:#fff;
  font-weight:600;
  box-shadow:0 4px 12px rgba(15,46,77,0.18);
}

/* ========== 板块标题 ========== */
.section-title-wrap{margin-bottom:40px}
.section-title{
  font-size:clamp(1.45rem,2.6vw,2rem);
  font-weight:700;color:var(--brand-primary);
  position:relative;
  padding-left:18px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;
  width:4px;border-radius:4px;background:var(--brand-accent);
}
.section-subtitle{
  margin-top:10px;font-size:15px;color:var(--text-muted);
}

/* ========== 精选资讯卡片区 ========== */
.feature-section{padding:var(--space-section) 0}
.media-card-list{display:flex;flex-direction:column;gap:24px}
.media-card{
  display:flex;background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:box-shadow .3s ease,transform .3s ease;
}
.media-card:hover{
  box-shadow:var(--shadow-card-hover);
  transform:translateY(-4px);
}
.media-card-body{
  flex:1;padding:28px 28px 24px;
  display:flex;flex-direction:column;
}
.cat-badge{
  display:inline-flex;align-items:center;
  align-self:flex-start;
  background:var(--brand-accent);color:var(--brand-primary);
  font-size:12px;font-weight:600;
  padding:3px 12px;border-radius:8px;
  margin-bottom:12px;
  line-height:1.6;
}
.media-card-body h3{
  font-size:20px;font-weight:600;line-height:1.4;
}
.media-card-body h3 a{color:var(--text-primary)}
.media-card-body h3 a:hover{color:var(--brand-accent)}
.media-card-body p{
  margin-top:10px;font-size:14px;color:var(--text-secondary);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.media-meta{
  margin-top:16px;display:flex;gap:20px;
  font-size:12px;color:var(--text-muted);
}
.media-meta span{display:inline-flex;align-items:center;gap:6px}
.media-card-thumb{
  width:280px;flex-shrink:0;
  position:relative;overflow:hidden;
}
.media-card-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s ease;
}
.media-card:hover .media-card-thumb img{transform:scale(1.05)}
.media-card-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(15,46,77,0.06),transparent 40%);
}

/* ========== 小卡片区 ========== */
.mini-grid{
  padding-bottom:56px;
}
.mini-grid .row{row-gap:24px}
.mini-card{
  background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:box-shadow .3s,transform .3s;
}
.mini-card:hover{
  box-shadow:var(--shadow-card-hover);
  transform:translateY(-4px);
}
.mini-thumb{
  position:relative;display:block;
  overflow:hidden;aspect-ratio:16/9;
}
.mini-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s ease;
}
.mini-card:hover .mini-thumb img{transform:scale(1.05)}
.mini-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,46,77,0.02) 60%,rgba(15,46,77,0.18) 100%);
}
.mini-body{
  padding:20px 20px 18px;
  display:flex;flex-direction:column;flex:1;
}
.mini-body .cat-badge{position:absolute;top:12px;left:12px;z-index:2;margin-bottom:0;box-shadow:0 2px 8px rgba(15,46,77,0.12)}
.mini-thumb-wrap{position:relative}
.mini-body h3{
  font-size:16px;font-weight:600;line-height:1.5;
}
.mini-body h3 a{color:var(--text-primary)}
.mini-body h3 a:hover{color:var(--brand-accent)}
.mini-body p{
  margin-top:8px;font-size:13px;color:var(--text-muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  line-height:1.65;
}
.mini-time{
  margin-top:auto;padding-top:14px;
  font-size:12px;color:var(--text-muted);
}

/* ========== 分页器 ========== */
.pagination-wrap{
  padding:16px 0 0;
  display:flex;justify-content:center;
}
.pagination{
  gap:6px;
}
.pagination .page-link{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--border-color);
  background:#fff;color:var(--text-secondary);
  font-size:14px;font-weight:500;
  transition:all .25s ease;
}
.pagination .page-link:hover{
  background:var(--brand-primary-soft);
  border-color:var(--brand-primary);
  color:var(--brand-primary);
}
.pagination .page-item.active .page-link{
  background:var(--brand-primary);
  border-color:var(--brand-primary);
  color:#fff;
  box-shadow:0 4px 12px rgba(15,46,77,0.2);
}
.pagination .page-item.disabled .page-link{
  color:var(--text-muted);
  background:var(--bg-page);
  border-color:var(--border-color);
}

/* ========== 卖点区 ========== */
.why-section{
  background:var(--bg-soft);
  padding:var(--space-section) 0;
}
.why-grid .row{row-gap:24px}
.why-card{
  background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:32px 28px;
  height:100%;
  transition:box-shadow .3s,transform .3s;
}
.why-card:hover{
  box-shadow:var(--shadow-card-hover);
  transform:translateY(-4px);
}
.why-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:52px;height:52px;border-radius:14px;
  background:var(--brand-primary);color:var(--brand-accent);
  font-size:22px;margin-bottom:18px;
}
.why-card:nth-child(even) .why-icon{
  background:var(--brand-accent);
  color:var(--brand-primary);
}
.why-card h3{
  font-size:17px;font-weight:600;
  margin-bottom:8px;
}
.why-card p{
  font-size:14px;color:var(--text-secondary);line-height:1.75;
}

/* ========== 数据证据区 ========== */
.evidence-section{padding:var(--space-section) 0}
.evidence-grid .row{row-gap:20px}
.evidence-box{
  background:var(--bg-card);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:28px 24px;
  text-align:center;
  height:100%;
  transition:box-shadow .3s,transform .3s;
}
.evidence-box:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px)}
.evidence-num{
  font-size:34px;font-weight:700;color:var(--brand-primary);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.evidence-num span{
  color:var(--brand-accent);
}
.evidence-label{
  margin-top:6px;font-size:13px;color:var(--text-muted);
}
.review-card{
  background:#fff;border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:28px;
  height:100%;
  transition:box-shadow .3s,transform .3s;
}
.review-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px)}
.review-stars{
  color:var(--brand-accent);font-size:14px;letter-spacing:2px;
  margin-bottom:10px;
}
.review-text{
  font-size:14px;color:var(--text-secondary);
  line-height:1.8;
}
.review-author{
  margin-top:16px;font-size:13px;font-weight:600;color:var(--text-primary);
  display:flex;align-items:center;gap:8px;
}
.review-author::before{
  content:"";width:32px;height:2px;background:var(--brand-accent);
  border-radius:2px;
}

/* ========== FAQ ========== */
.faq-section{
  background:var(--bg-soft);
  padding:var(--space-section) 0;
}
.accordion{
  max-width:860px;
  margin:0 auto;
}
.accordion-item{
  background:#fff;border:none;
  border-radius:12px !important;
  box-shadow:var(--shadow-card);
  margin-bottom:10px;
  overflow:hidden;
}
.accordion-header{border-radius:12px}
.accordion-button{
  padding:18px 24px;
  font-size:16px;font-weight:600;color:var(--text-primary);
  background:#fff;
  border:none;
  box-shadow:none;
  transition:color .2s;
}
.accordion-button:not(.collapsed){
  background:#fff;color:var(--brand-primary);
  box-shadow:none;
}
.accordion-button:focus{box-shadow:none}
.accordion-button::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23C9A063' stroke-width='2' stroke-linecap='round'%3e%3cpath d='M12 5v14M5 12h14'/%3e%3c/svg%3e");
  background-size:18px;
  transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23C9A063' stroke-width='2' stroke-linecap='round'%3e%3cpath d='M5 12h14'/%3e%3c/svg%3e");
  transform:rotate(0deg);
}
.accordion-body{
  padding:0 24px 22px;
  font-size:14px;color:var(--text-secondary);
  line-height:1.8;
  border-top:1px dashed var(--border-color);
  margin:0 24px;
  padding-left:0;padding-right:0;
}

/* ========== CTA ========== */
.cta-section{padding:var(--space-section) 0}
.cta-box{
  position:relative;
  background:var(--brand-primary);
  border-radius:24px;
  padding:56px 48px;
  text-align:center;
  overflow:hidden;
}
.cta-box::before{
  content:"";position:absolute;top:-60px;right:-60px;
  width:220px;height:220px;border-radius:50%;
  background:rgba(201,160,99,0.12);
}
.cta-box::after{
  content:"";position:absolute;bottom:-80px;left:-40px;
  width:200px;height:200px;border-radius:50%;
  background:rgba(255,255,255,0.04);
}
.cta-box h2{
  position:relative;z-index:1;
  color:#fff;font-size:clamp(1.4rem,2.4vw,2rem);
  margin-bottom:10px;
}
.cta-box p{
  position:relative;z-index:1;
  color:#B8C7D6;font-size:15px;
  margin-bottom:28px;
}
.cta-btns{
  position:relative;z-index:1;
  display:flex;justify-content:center;gap:14px;flex-wrap:wrap;
}
.btn-gold-lg{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-accent);color:var(--brand-primary);
  font-size:15px;font-weight:600;
  padding:12px 34px;
  border-radius:10px;border:1px solid var(--brand-accent);
  transition:filter .2s,box-shadow .2s,transform .2s;
}
.btn-gold-lg:hover{
  color:var(--brand-primary);filter:brightness(1.06);
  box-shadow:0 0 0 5px rgba(201,160,99,0.25);
  transform:translateY(-2px);
}
.btn-ghost-lg{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:#fff;
  font-size:15px;font-weight:500;
  padding:12px 34px;
  border-radius:10px;border:1px solid rgba(255,255,255,0.4);
  transition:background .2s,border-color .2s;
}
.btn-ghost-lg:hover{
  background:rgba(255,255,255,0.08);
  border-color:#fff;color:#fff;
}

/* ========== 页脚 ========== */
.site-footer{
  background:var(--brand-primary);
  color:#B8C7D6;
  padding:64px 0 0;
}
.footer-col{
  margin-bottom:32px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-size:1.2rem;font-weight:700;
  margin-bottom:14px;
}
.footer-col > p{
  font-size:13px;line-height:1.8;
  margin-bottom:18px;
  color:#B8C7D6;
}
.footer-col-title{
  color:#fff;font-size:15px;font-weight:600;
  margin-bottom:16px;
  position:relative;
  padding-bottom:8px;
}
.footer-col-title::after{
  content:"";position:absolute;left:0;bottom:0;
  width:24px;height:2px;background:var(--brand-accent);
  border-radius:2px;
}
.footer-links li{
  margin-bottom:9px;
}
.footer-links a{
  font-size:13px;color:#B8C7D6;
  transition:color .2s,padding-left .2s;
}
.footer-links a:hover{
  color:var(--brand-accent);padding-left:4px;
}
.footer-contact li{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:#B8C7D6;
  margin-bottom:10px;
}
.footer-contact i{
  color:var(--brand-accent);width:16px;text-align:center;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);
  padding:18px 0;
  margin-top:16px;
  font-size:13px;color:#94A7B8;
  text-align:center;
}

/* ========== 浮动 CTA ========== */
.float-cta{
  position:fixed;right:24px;bottom:90px;z-index:1040;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  opacity:0;transform:translateY(16px);
  pointer-events:none;
  transition:opacity .35s ease,transform .35s ease;
}
.float-cta.show{
  opacity:1;transform:translateY(0);
  pointer-events:auto;
}
.float-btn{
  width:56px;height:56px;border-radius:50%;
  background:var(--brand-accent);color:var(--brand-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:700;
  box-shadow:0 6px 20px rgba(201,160,99,0.4);
  transition:transform .25s,box-shadow .25s;
}
.float-btn:hover{
  transform:scale(1.06) translateY(-2px);
  box-shadow:0 10px 28px rgba(201,160,99,0.5);
}
.float-tip{
  background:#fff;color:var(--brand-primary);
  font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:var(--radius-pill);
  box-shadow:var(--shadow-card);
  white-space:nowrap;
}
.mobile-cta-bar{
  position:fixed;bottom:0;left:0;right:0;z-index:1020;
  background:#fff;
  border-top:1px solid var(--border-color);
  padding:10px 16px;
  display:none;
  gap:10px;
  box-shadow:0 -4px 16px rgba(15,46,77,0.06);
}
.mobile-cta-bar .btn-gold-sm{flex:1}
.mobile-cta-bar .btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  flex:1;background:var(--bg-page);color:var(--brand-primary);
  border:1px solid var(--border-color);
  font-size:14px;font-weight:600;
  padding:9px 16px;border-radius:8px;
}

/* ========== 响应式 ========== */
@media (max-width:991.98px){
  .desktop-nav{display:none !important}
  .media-card-thumb{width:220px}
  .page-hero{padding:64px 0 48px}
  .hero-stats{gap:12px}
}
@media (max-width:767.98px){
  :root{--space-section:56px}
  .page-hero{padding:48px 0 40px}
  .page-title{font-size:1.7rem;padding-left:14px}
  .hero-sub{font-size:16px}
  .hero-stats{grid-template-columns:repeat(2,1fr);display:grid}
  .stat-item{padding:14px 12px}
  .stat-num{font-size:22px}
  .media-card{
    flex-direction:column-reverse;
  }
  .media-card-thumb{
    width:100%;aspect-ratio:16/9;
  }
  .media-card-body{padding:20px}
  .media-card-body h3{font-size:17px}
  .cta-box{padding:40px 20px;border-radius:16px}
  .cta-btns a{width:100%}
  .footer-col{flex:0 0 100%;max-width:100%}
  .mobile-cta-bar{display:flex}
  .float-cta{bottom:90px;right:16px}
  .float-btn{width:50px;height:50px}
}
@media (max-width:520px){
  .tabs-wrap{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;margin-bottom:-4px}
  .tab-link{white-space:nowrap}
  .section-title{font-size:1.35rem}
  .media-meta{gap:12px;flex-wrap:wrap}
  .pagination .page-link{width:36px;height:36px}
}

/* roulang page: article */
:root{
  --brand-primary:#0F2E4D;
  --brand-primary-soft:#E8EEF4;
  --brand-accent:#C9A063;
  --brand-accent-soft:#F5EFE3;
  --brand-success:#1E9E6A;
  --bg-page:#F5F7FA;
  --bg-card:#FFFFFF;
  --bg-soft:#EDF1F5;
  --text-primary:#142433;
  --text-secondary:#4A5B6C;
  --text-muted:#8091A1;
  --border-color:#E2E8F0;
  --shadow-card:0 4px 20px rgba(15,46,77,0.06);
  --shadow-card-hover:0 12px 32px rgba(15,46,77,0.12);
  --radius-card:16px;
  --radius-item:8px;
  --radius-pill:999px;
  --font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-family);
  background:var(--bg-page);
  color:var(--text-primary);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;transition:color .2s ease;}
a:hover{color:var(--brand-accent);}
img{max-width:100%;height:auto;display:block;}
ul,ol{list-style:none;margin:0;padding:0;}
button{font-family:inherit;}
.container{max-width:1200px;}

/* ===== Bootstrap 覆盖 ===== */
.btn:focus,.form-control:focus,.form-check-input:focus,.accordion-button:focus{
  box-shadow:none!important;
}
.navbar{padding:0;}
.text-primary{color:var(--text-primary)!important;}
.btn{border-radius:var(--radius-item);}

/* ===== 导航 Header ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,0.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(226,232,240,0.7);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header.scrolled{
  background:#ffffff;
  box-shadow:0 2px 12px rgba(15,46,77,0.06);
}
.site-header .navbar{min-height:72px;}
.brand-main{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:1.25rem;
  font-weight:700;
  color:var(--brand-primary)!important;
  letter-spacing:.02em;
  line-height:1;
}
.brand-main:hover{color:var(--brand-primary)!important;}
.brand-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  background:var(--brand-primary);
  color:var(--brand-accent);
  border-radius:10px;
  font-size:16px;
  box-shadow:0 4px 12px rgba(15,46,77,0.2);
  transition:transform .25s ease;
}
.brand-main:hover .brand-icon{transform:rotate(8deg) scale(1.03);}
.desktop-nav{
  display:flex;
  align-items:center;
  gap:4px;
}
.desktop-nav > a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:9px 13px;
  border-radius:8px;
  font-size:15px;
  font-weight:500;
  color:var(--text-secondary);
  line-height:1.2;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease,box-shadow .2s ease;
}
.desktop-nav > a:hover{
  color:var(--brand-primary);
  background:var(--bg-page);
}
.desktop-nav > a.active{
  color:var(--brand-primary);
  font-weight:600;
  box-shadow:inset 0 -2px 0 var(--brand-accent);
  background:transparent;
}
.btn-gold-sm{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--brand-accent);
  color:var(--brand-primary)!important;
  border:none;
  border-radius:8px;
  padding:9px 20px;
  margin-left:6px;
  font-size:14px;
  font-weight:600;
  line-height:1.2;
  white-space:nowrap;
  transition:filter .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-gold-sm:hover{
  filter:brightness(1.06);
  box-shadow:0 4px 14px rgba(201,160,99,0.35);
  transform:translateY(-1px);
  color:var(--brand-primary)!important;
}
.navbar-toggler{
  border:none;
  padding:6px;
  border-radius:8px;
  transition:background .2s ease;
}
.navbar-toggler:hover{background:var(--brand-primary-soft);}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15,46,77,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.mobile-nav-drawer{
  background:#fff;
  width:300px;
  border:none;
  box-shadow:0 8px 40px rgba(15,46,77,0.12);
}
.mobile-nav-drawer .offcanvas-header{
  padding:20px 22px;
  border-bottom:1px solid var(--border-color);
}
.mobile-nav-drawer .offcanvas-header .brand-main{font-size:1.1rem;}
.mobile-nav-drawer .btn-close{
  background:transparent;
  font-size:14px;
  opacity:.7;
}
.mobile-nav-drawer .offcanvas-body{padding:12px 0 24px;}
.mobile-nav-link{
  display:block;
  padding:15px 22px;
  font-size:16px;
  font-weight:500;
  color:var(--text-primary);
  border-bottom:1px solid #F0F3F7;
  transition:background .2s ease,color .2s ease,padding-left .2s ease;
}
.mobile-nav-link:hover{
  background:var(--bg-page);
  color:var(--brand-primary);
  padding-left:26px;
}
.mobile-nav-link.active{
  color:var(--brand-primary);
  font-weight:600;
  border-left:3px solid var(--brand-accent);
}
.mobile-nav-cta{
  display:block;
  margin:20px 22px 8px;
  text-align:center;
  padding:13px 20px;
  border-radius:8px;
  background:var(--brand-accent);
  color:var(--brand-primary)!important;
  font-size:15px;
  font-weight:600;
  transition:filter .2s ease,transform .2s ease;
}
.mobile-nav-cta:hover{filter:brightness(1.06);transform:translateY(-1px);}

/* ===== 文章 Banner ===== */
.article-banner{
  position:relative;
  padding:44px 0 52px;
  background-color:#F5F7FA;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  border-bottom:1px solid var(--border-color);
  overflow:hidden;
}
.article-banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(245,247,250,0.9);
  pointer-events:none;
}
.article-banner .container{position:relative;z-index:2;}
.article-breadcrumb{
  padding:6px 0 18px;
}
.article-breadcrumb .breadcrumb{
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:0;
}
.article-breadcrumb .breadcrumb a{
  color:var(--text-muted);
  transition:color .2s ease;
}
.article-breadcrumb .breadcrumb a:hover{color:var(--brand-primary);}
.article-breadcrumb .breadcrumb-item+.breadcrumb-item::before{
  content:">";
  color:#C0C8D0;
  padding-right:8px;
  padding-left:8px;
}
.article-breadcrumb .breadcrumb-item.active{
  color:var(--text-secondary);
  max-width:280px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  display:block;
}
.article-cat-badge{
  display:inline-block;
  background:var(--brand-accent);
  color:var(--brand-primary);
  font-size:12px;
  font-weight:600;
  padding:4px 14px;
  border-radius:6px;
  margin-bottom:14px;
  letter-spacing:.03em;
}
.article-title{
  font-size:clamp(1.55rem,3.2vw,2.2rem);
  font-weight:700;
  color:var(--text-primary);
  line-height:1.45;
  margin-bottom:16px;
  max-width:820px;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:14px;
  color:var(--text-muted);
}
.article-meta .meta-item{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.article-meta .meta-divider{color:#D0D7E0;}

/* ===== 正文区 ===== */
.article-content-section{
  padding:56px 0 48px;
  background:#fff;
}
.article-body{
  max-width:760px;
  margin:0 auto;
  font-size:16px;
  line-height:1.9;
  color:var(--text-secondary);
}
.article-body p{
  margin-bottom:28px;
  word-break:break-word;
}
.article-body h2,
.article-body h3,
.article-body h4{
  color:var(--text-primary);
  font-weight:700;
  margin-top:36px;
  margin-bottom:16px;
  line-height:1.5;
}
.article-body h2{font-size:1.45rem;}
.article-body h3{font-size:1.2rem;}
.article-body h4{font-size:1.05rem;}
.article-body img{
  border-radius:12px;
  margin:24px 0;
  max-width:100%;
  height:auto;
}
.article-body a{
  color:var(--brand-primary);
  text-decoration:underline;
  text-decoration-color:var(--brand-accent);
  text-underline-offset:4px;
}
.article-body a:hover{color:var(--brand-accent);}
.article-body blockquote{
  border-left:3px solid var(--brand-accent);
  background:var(--brand-accent-soft);
  padding:16px 22px;
  border-radius:0 8px 8px 0;
  color:var(--text-primary);
  margin:28px 0;
  font-style:italic;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body ul,
.article-body ol{
  margin:0 0 28px;
  padding-left:24px;
}
.article-body ul li{
  list-style:disc;
  margin-bottom:10px;
}
.article-body ol li{
  list-style:decimal;
  margin-bottom:10px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:28px 0;
  font-size:14px;
}
.article-body table th,
.article-body table td{
  border:1px solid var(--border-color);
  padding:10px 14px;
  text-align:left;
}
.article-body table th{
  background:var(--brand-primary-soft);
  font-weight:600;
  color:var(--brand-primary);
  white-space:nowrap;
}
.article-body table tr:nth-child(even) td{
  background:#FAFBFD;
}
.article-body hr{
  border:none;
  border-top:1px solid var(--border-color);
  margin:32px 0;
}
.article-not-found{
  text-align:center;
  padding:64px 24px;
  background:var(--bg-page);
  border-radius:16px;
  border:1px dashed var(--border-color);
}
.article-not-found p{
  font-size:16px;
  color:var(--text-secondary);
  margin-bottom:20px;
}
.btn-gold{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--brand-accent);
  color:var(--brand-primary)!important;
  border:none;
  border-radius:8px;
  padding:11px 26px;
  font-size:14px;
  font-weight:600;
  line-height:1.2;
  transition:filter .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-gold:hover{
  filter:brightness(1.06);
  box-shadow:0 4px 14px rgba(201,160,99,0.35);
  transform:translateY(-1px);
  color:var(--brand-primary)!important;
}

/* ===== 标签区 ===== */
.article-tags-section{
  padding:32px 0 40px;
  background:#fff;
  border-top:1px solid var(--border-color);
}
.article-tags-wrap{
  max-width:760px;
  margin:0 auto;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.tag-item{
  display:inline-block;
  background:var(--brand-primary-soft);
  color:var(--brand-primary);
  font-size:12px;
  font-weight:500;
  padding:6px 14px;
  border-radius:999px;
  transition:background .2s ease,color .2s ease;
}
.tag-item:hover{
  background:var(--brand-accent);
  color:var(--brand-primary);
}

/* ===== 相关推荐 ===== */
.related-posts-section{
  padding:64px 0 80px;
  background:var(--bg-page);
}
.section-title{
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  font-weight:700;
  color:var(--text-primary);
  margin-bottom:32px;
  position:relative;
  padding-left:16px;
  line-height:1.4;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;
  top:12%;
  width:4px;
  height:76%;
  background:var(--brand-accent);
  border-radius:2px;
}
.related-card{
  display:block;
  background:var(--bg-card);
  border-radius:16px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease;
  height:100%;
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-card-hover);
}
.related-card .thumb{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:#E2E8F0;
}
.related-card .thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.related-card:hover .thumb img{transform:scale(1.05);}
.related-card .body{
  padding:20px 20px 18px;
}
.related-badge{
  display:inline-block;
  background:var(--brand-accent-soft);
  color:var(--brand-primary);
  font-size:11px;
  font-weight:600;
  padding:3px 10px;
  border-radius:5px;
  margin-bottom:10px;
  letter-spacing:.02em;
}
.related-card .related-title{
  font-size:15px;
  font-weight:600;
  color:var(--text-primary);
  line-height:1.5;
  margin-bottom:12px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .2s ease;
}
.related-card:hover .related-title{color:var(--brand-accent);}
.related-card .related-date{
  font-size:12px;
  color:var(--text-muted);
  display:inline-flex;
  align-items:center;
  gap:5px;
}

/* ===== Footer ===== */
.site-footer{
  background:var(--brand-primary);
  color:#B8C7D6;
  padding:64px 0 0;
  font-size:14px;
}
.site-footer .container{max-width:1200px;}
.footer-col{margin-bottom:32px;}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.2rem;
  font-weight:700;
  color:#ffffff;
  margin-bottom:16px;
  line-height:1;
}
.footer-brand .brand-icon{
  background:rgba(255,255,255,0.12);
  color:#ffffff;
  border-radius:10px;
  width:36px;
  height:36px;
  font-size:14px;
  box-shadow:none;
}
.site-footer p{
  font-size:14px;
  line-height:1.9;
  color:#B8C7D6;
  margin-bottom:20px;
  max-width:320px;
}
.footer-col-title{
  font-size:16px;
  font-weight:600;
  color:#ffffff;
  margin-bottom:20px;
  line-height:1.4;
}
.footer-links li{margin-bottom:12px;}
.footer-links a{
  font-size:14px;
  color:#B8C7D6;
  transition:color .2s ease;
}
.footer-links a:hover{color:var(--brand-accent);}
.footer-contact li{
  font-size:14px;
  color:#B8C7D6;
  margin-bottom:12px;
  display:flex;
  align-items:center;
  gap:10px;
}
.footer-contact i{color:var(--brand-accent);}
.footer-bottom{
  margin-top:32px;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,0.1);
  font-size:13px;
  color:#8FA0B3;
  text-align:center;
}

/* ===== 返回顶部 ===== */
.back-top-btn{
  position:fixed;
  bottom:40px;
  right:40px;
  width:48px;
  height:48px;
  border-radius:12px;
  background:var(--brand-primary);
  color:var(--brand-accent);
  font-size:18px;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 20px rgba(15,46,77,0.2);
  opacity:0;
  transform:translateY(20px);
  pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,background .3s ease,color .3s ease;
  z-index:1040;
  border:none;
  cursor:pointer;
}
.back-top-btn.show{
  opacity:1;
  transform:none;
  pointer-events:auto;
}
.back-top-btn:hover{
  background:var(--brand-accent);
  color:var(--brand-primary);
}

/* ===== 响应式 ===== */
@media (max-width: 991.98px){
  .desktop-nav{display:none!important;}
  .article-banner{padding:36px 0 44px;}
  .site-footer{padding-top:48px;}
}
@media (max-width: 767.98px){
  .article-banner{padding:28px 0 36px;}
  .article-breadcrumb .breadcrumb-item.active{
    max-width:160px;
  }
  .article-title{
    font-size:1.35rem;
    line-height:1.4;
  }
  .article-meta{
    gap:8px;
    font-size:13px;
  }
  .article-content-section{
    padding:40px 0 36px;
  }
  .article-body{
    font-size:15px;
    line-height:1.85;
  }
  .article-body p{margin-bottom:24px;}
  .article-tags-section{padding:24px 0 32px;}
  .related-posts-section{
    padding:48px 0 56px;
  }
  .related-card .body{
    padding:16px;
  }
  .back-top-btn{
    right:16px;
    bottom:16px;
    width:42px;
    height:42px;
    font-size:15px;
    border-radius:10px;
  }
  .site-footer{
    padding-top:40px;
  }
  .footer-col{
    margin-bottom:24px;
  }
}
@media (max-width: 520px){
  .article-meta .meta-divider{
    display:none;
  }
  .article-title{
    font-size:1.25rem;
  }
}