/* roulang page: index */
:root {
  --c-primary: #215A8E;
  --c-primary-dark: #1A4A75;
  --c-primary-light: #EAF1F8;
  --c-accent: #F08A24;
  --c-accent-dark: #D9771A;
  --c-bg: #F7FAFC;
  --c-white: #FFF;
  --c-text: #1F2D3D;
  --c-text-sec: #5C6B7A;
  --c-text-muted: #8A99A8;
  --c-border: #EBF0F5;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(26, 51, 76, 0.05);
  --shadow-md: 0 4px 16px rgba(26, 51, 76, 0.08);
  --shadow-lg: 0 12px 32px rgba(26, 51, 76, 0.12);
  --transition: all 0.25s ease;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", system-ui, -apple-system, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  padding-bottom: 72px;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }
.container { max-width: 1200px; }
.btn { border-radius: var(--radius-sm); font-weight: 600; padding: 12px 30px; transition: var(--transition); }
.btn-lg { padding: 14px 40px; border-radius: 10px; font-size: 17px; }
.btn-primary {
  background: var(--c-primary);
  color: #fff;
  border: 2px solid var(--c-primary);
}
.btn-primary:hover { background: var(--c-primary-dark); border-color: var(--c-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(33, 90, 142, 0.25); }
.btn-outline {
  background: transparent;
  color: var(--c-primary);
  border: 2px solid var(--c-primary);
}
.btn-outline:hover { background: rgba(33, 90, 142, 0.08); transform: translateY(-2px); }
.btn-accent {
  background: var(--c-accent);
  color: #fff;
  border: 2px solid var(--c-accent);
}
.btn-accent:hover { background: var(--c-accent-dark); border-color: var(--c-accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(240, 138, 36, 0.3); }
.btn:focus, .btn:focus-visible { outline: 3px solid rgba(33, 90, 142, 0.25); box-shadow: 0 0 0 4px rgba(33, 90, 142, 0.12); }

header.site-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 72px;
  box-shadow: 0 2px 12px rgba(26, 51, 76, 0.06);
}
header.site-header .navbar {
  min-height: 72px;
  padding: 0;
}
.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--c-primary);
  white-space: nowrap;
}
.brand-wrap .brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--c-primary), #3A7CBD);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 4px 10px rgba(33, 90, 142, 0.25);
}
.navbar-nav .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text);
  padding: 10px 16px !important;
  margin: 0 4px;
  border-radius: 8px;
  position: relative;
  transition: var(--transition);
}
.navbar-nav .nav-link:hover { color: var(--c-primary); background: var(--c-primary-light); }
.navbar-nav .nav-link.active { color: var(--c-primary); font-weight: 600; }
.navbar-nav .nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  border-radius: 4px;
  background: var(--c-primary);
}
.btn-nav-cta {
  background: var(--c-accent);
  color: #fff;
  border: none;
  padding: 10px 26px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
}
.btn-nav-cta:hover { background: var(--c-accent-dark); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(240, 138, 36, 0.3); color:#fff; }
.navbar-toggler { border: none; padding: 8px 10px; }
.navbar-toggler:focus { box-shadow: none; }
.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='%23215A8E' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.hero-section {
  padding: 72px 0 64px;
  background: linear-gradient(135deg, #F0F6FC 0%, #FFFFFF 60%, #EAF1F8 100%);
  position: relative;
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: center;
}
.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity: 0.08;
}
.hero-section .container { position: relative; z-index: 2; }
.hero-section .row { align-items: center; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(240, 138, 36, 0.12);
  color: var(--c-accent-dark);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-section h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-text);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero-section h1 .highlight {
  color: var(--c-primary);
  position: relative;
}
.hero-section h1 .highlight::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 10px;
  background: rgba(240, 138, 36, 0.2);
  z-index: -1;
  border-radius: 4px;
}
.hero-sub {
  font-size: 18px;
  color: var(--c-text-sec);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 500px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.8);
}
.hero-image-wrap img { width: 100%; display: block; object-fit: cover; }
.hero-image-card {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--c-border);
}
.hero-image-card .icon-box {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.hero-image-card .info { line-height: 1.4; }
.hero-image-card .info strong { font-size: 15px; display: block; color: var(--c-text); }
.hero-image-card .info span { font-size: 13px; color: var(--c-text-sec); }

.section-padding { padding: 96px 0; }
.section-title-wrap { text-align: center; margin-bottom: 56px; }
.section-title-wrap h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}
.section-title-wrap h2::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 4px;
  background: var(--c-accent);
  border-radius: 4px;
}
.section-title-wrap .section-sub {
  font-size: 16px;
  color: var(--c-text-sec);
  max-width: 640px;
  margin: 16px auto 0;
}

.feature-card {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  height: 100%;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-card:hover::before { opacity: 1; }
.feature-card .feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 22px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--c-primary); color: #fff; transform: scale(1.05); }
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; color: var(--c-text); }
.feature-card p { font-size: 15px; color: var(--c-text-sec); line-height: 1.7; margin-bottom: 16px; }
.feature-card .feature-link {
  font-size: 14px;
  color: var(--c-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.feature-card .feature-link:hover { gap: 12px; color: var(--c-accent-dark); }

.scene-section { background: var(--c-white); border-top: 1px solid var(--c-border); border-bottom: 1px solid var(--c-border); }
.scene-row { display: flex; align-items: center; gap: 56px; padding: 48px 0; }
.scene-row + .scene-row { border-top: 1px solid var(--c-border); }
.scene-image {
  flex: 0 0 50%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
}
.scene-image::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}
.scene-image img { width: 100%; display: block; object-fit: cover; transition: transform 0.5s ease; }
.scene-row:hover .scene-image img { transform: scale(1.02); }
.scene-content { flex: 1; }
.scene-content .scene-tag {
  display: inline-block;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 16px;
}
.scene-content h3 { font-size: 26px; font-weight: 700; margin-bottom: 16px; color: var(--c-text); }
.scene-content p { font-size: 16px; color: var(--c-text-sec); line-height: 1.8; margin-bottom: 20px; }
.scene-content .btn { margin-top: 8px; }

.social-section { background: linear-gradient(180deg, var(--c-bg) 0%, #EAF1F8 100%); }
.stats-row { text-align: center; margin-bottom: 64px; }
.stat-item { padding: 20px 10px; }
.stat-item .stat-num {
  font-size: 44px;
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1.2;
  font-family: "Inter", "PingFang SC", sans-serif;
}
.stat-item .stat-label { font-size: 14px; color: var(--c-text-sec); margin-top: 8px; }
.review-card {
  background: #F0F5FA;
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  height: 100%;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.review-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.review-card .quote-mark {
  font-size: 40px;
  color: var(--c-primary);
  opacity: 0.25;
  font-family: Georgia, serif;
  line-height: 1;
  margin-bottom: 10px;
}
.review-card p { font-size: 15px; color: var(--c-text); line-height: 1.8; margin-bottom: 20px; }
.review-card .reviewer { display: flex; align-items: center; gap: 12px; }
.review-card .reviewer .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}
.review-card .reviewer .reviewer-name { font-size: 14px; font-weight: 600; color: var(--c-text); }
.review-card .reviewer .reviewer-role { font-size: 13px; color: var(--c-text-sec); }
.stars { color: var(--c-accent); font-size: 14px; margin-bottom: 12px; }

.news-section { background: var(--c-white); }
.news-card {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 28px 30px;
  margin-bottom: 16px;
  display: block;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.news-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--c-primary);
  opacity: 0;
  transition: var(--transition);
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateX(6px); border-color: transparent; }
.news-card:hover::before { opacity: 1; }
.news-card h3 { font-size: 18px; font-weight: 600; color: var(--c-text); margin-bottom: 8px; transition: var(--transition); }
.news-card:hover h3 { color: var(--c-primary); }
.news-card p { font-size: 15px; color: var(--c-text-sec); line-height: 1.6; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .news-meta { display: flex; align-items: center; gap: 18px; font-size: 13px; color: var(--c-text-muted); }
.news-card .news-meta .badge-news {
  background: var(--c-primary-light);
  color: var(--c-primary);
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.empty-state {
  text-align: center;
  border: 2px dashed var(--c-border);
  border-radius: var(--radius-md);
  padding: 48px 20px;
  color: var(--c-text-muted);
  font-size: 15px;
}

.faq-section { background: var(--c-bg); }
.faq-wrap { max-width: 780px; margin: 0 auto; }
.accordion-item {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.accordion-button {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
  background: var(--c-white);
  padding: 20px 24px;
  transition: var(--transition);
}
.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23215A8E'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  transition: transform 0.3s ease;
}
.accordion-button:not(.collapsed) { background: var(--c-primary-light); color: var(--c-primary); box-shadow: none; }
.accordion-button:not(.collapsed)::after { transform: rotate(180deg); }
.accordion-button:focus { box-shadow: 0 0 0 4px rgba(33, 90, 142, 0.12); }
.accordion-body { padding: 20px 24px; font-size: 15px; color: var(--c-text-sec); line-height: 1.8; background: var(--c-white); }

.cta-banner {
  background: linear-gradient(135deg, var(--c-primary) 0%, #2B6FA3 100%);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  position: relative;
  overflow: hidden;
  margin-bottom: 96px;
}
.cta-banner::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 320px;
  height: 320px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}
.cta-banner h2 { color: #fff; font-size: 26px; font-weight: 700; margin-bottom: 8px; }
.cta-banner p { color: rgba(255, 255, 255, 0.85); font-size: 15px; margin: 0; }

footer.site-footer {
  background: var(--c-primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 0;
}
footer.site-footer h5 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
footer.site-footer h5::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 3px;
  background: var(--c-accent);
  border-radius: 3px;
}
footer.site-footer p { font-size: 14px; line-height: 1.8; }
footer.site-footer ul { list-style: none; padding: 0; margin: 0; }
footer.site-footer ul li { margin-bottom: 10px; }
footer.site-footer ul li a { color: rgba(255, 255, 255, 0.7); font-size: 14px; transition: var(--transition); }
footer.site-footer ul li a:hover { color: #fff; padding-left: 6px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.footer-brand strong { color: #fff; font-size: 18px; font-weight: 700; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; }
.footer-contact li i { margin-top: 5px; color: var(--c-accent); width: 16px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 48px;
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.bottom-cta-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--c-border);
  z-index: 999;
  padding: 12px 0;
  box-shadow: 0 -4px 20px rgba(26, 51, 76, 0.06);
  transform: translateY(100%);
  transition: transform 0.3s ease;
}
.bottom-cta-bar.show { transform: translateY(0); }
.bottom-cta-bar .cta-inner { display: flex; align-items: center; justify-content: center; gap: 20px; }
.bottom-cta-bar .cta-text { font-size: 15px; font-weight: 500; color: var(--c-text); }
.bottom-cta-bar .btn { padding: 10px 28px; font-size: 14px; }

@media (max-width: 992px) {
  .hero-section h1 { font-size: 38px; }
  .section-padding { padding: 72px 0; }
  .scene-row { gap: 32px; flex-direction: column; }
  .scene-image { flex: 0 0 100%; }
  .scene-row:nth-child(odd) .scene-image { order: -1; }
}

@media (max-width: 768px) {
  body { padding-bottom: 60px; }
  header.site-header { height: auto; }
  .navbar-collapse {
    background: #fff;
    padding: 16px 20px;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-md);
  }
  .navbar-nav .nav-link { padding: 12px 16px !important; font-size: 16px; }
  .btn-nav-cta { margin-top: 12px; width: 100%; text-align: center; }
  .hero-section { padding: 48px 0; min-height: auto; }
  .hero-section h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; text-align: center; }
  .section-padding { padding: 56px 0; }
  .section-title-wrap h2 { font-size: 26px; }
  .stat-item .stat-num { font-size: 32px; }
  .cta-banner { padding: 32px 24px; flex-direction: column; text-align: center; }
  .cta-banner h2 { font-size: 22px; }
  .bottom-cta-bar .cta-inner { flex-direction: column; gap: 8px; text-align: center; }
  .bottom-cta-bar .btn { width: 90%; }
  .footer-bottom { margin-top: 32px; }
}

@media (max-width: 576px) {
  .hero-section h1 { font-size: 28px; }
  .hero-badge { font-size: 13px; }
  .brand-wrap { font-size: 17px; }
  .section-title-wrap h2 { font-size: 23px; }
  .feature-card { padding: 24px 20px; }
  .news-card { padding: 20px; }
  .accordion-button { font-size: 15px; }
  .accordion-body { font-size: 14px; }
}

/* roulang page: category1 */
:root {
            --primary: #215A8E;
            --primary-dark: #1A486E;
            --primary-light: #2B6FA3;
            --accent: #F08A24;
            --accent-dark: #DD7315;
            --bg-main: #F7FAFC;
            --bg-white: #FFFFFF;
            --bg-blue: #EAF1F8;
            --border-color: #EBF0F5;
            --text-main: #1F2D3D;
            --text-sub: #5C6B7A;
            --text-light: #8A99A8;
            --radius-card: 12px;
            --radius-img: 16px;
            --radius-btn: 8px;
            --shadow-card: 0 4px 12px rgba(26, 51, 76, 0.06);
            --shadow-hover: 0 10px 28px rgba(26, 51, 76, 0.12);
            --transition-base: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-main);
            background-color: var(--bg-main);
            -webkit-font-smoothing: antialiased;
            padding-bottom: 76px;
        }

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

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

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

        .container {
            max-width: 1140px;
        }

        /* ===== Header 导航 ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 1px 16px rgba(26, 51, 76, 0.08);
            position: sticky;
            top: 0;
            z-index: 1040;
        }

        .site-header .navbar {
            padding: 0;
            min-height: 72px;
            background: transparent;
        }

        .site-header .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary);
            font-size: 20px;
            font-weight: 700;
            padding: 0;
            white-space: nowrap;
        }

        .site-header .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 9px;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }

        .site-header .navbar-nav {
            gap: 4px;
        }

        .site-header .nav-link {
            color: var(--text-sub);
            font-size: 16px;
            font-weight: 500;
            padding: 10px 16px;
            border-radius: var(--radius-btn);
            position: relative;
            transition: var(--transition-base);
        }

        .site-header .nav-link:hover {
            color: var(--primary);
            background: rgba(33, 90, 142, 0.05);
        }

        .site-header .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .site-header .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }

        .site-header .btn-nav-cta {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            margin-left: 12px;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .site-header .btn-nav-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(240, 138, 36, 0.3);
            color: #fff;
        }

        .navbar-toggler {
            border: none;
            padding: 8px;
            background: transparent;
        }

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

        .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='%23215A8E' stroke-linecap='round' stroke-miterlimit='10' stroke-width='3' d='M4 8h22M4 16h22M4 24h22'/%3e%3c/svg%3e");
        }

        /* ===== 页头 Banner ===== */
        .category-hero {
            background: linear-gradient(135deg, #F0F6FC 0%, #FFFFFF 60%, #EAF1F8 100%);
            padding: 80px 0 64px;
            position: relative;
            border-bottom: 1px solid var(--border-color);
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') no-repeat center center;
            background-size: cover;
            opacity: 0.08;
            z-index: 0;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-hero .tagline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(33, 90, 142, 0.1);
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .category-hero .hero-desc {
            font-size: 18px;
            color: var(--text-sub);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(33, 90, 142, 0.25);
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
        }

        .btn-outline-custom:hover {
            background: rgba(33, 90, 142, 0.05);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .hero-img-wrap {
            position: relative;
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            margin: 0 16px;
        }

        .hero-img-wrap img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
        }

        .hero-img-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(26, 51, 76, 0.7));
            padding: 40px 24px 20px;
            color: #fff;
        }

        .hero-img-overlay .badge {
            background: var(--accent);
            border-radius: 20px;
            padding: 5px 14px;
            font-size: 13px;
            margin-bottom: 8px;
        }

        .hero-img-overlay p {
            font-size: 15px;
            margin: 0;
            opacity: 0.9;
        }

        /* ===== 流程步骤 ===== */
        .steps-section {
            padding: 96px 0 80px;
        }

        .section-head {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .section-head .section-desc {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .step-item {
            padding: 36px 28px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            position: relative;
            height: 100%;
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(33, 90, 142, 0.2);
        }

        .step-number {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .step-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(33, 90, 142, 0.1), rgba(33, 90, 142, 0.04));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .step-item h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== 图片左文右 / 文左图右 ===== */
        .split-section {
            padding: 80px 0;
            background: var(--bg-white);
        }

        .split-section.alt {
            background: var(--bg-blue);
        }

        .split-inner {
            display: flex;
            align-items: center;
            gap: 60px;
        }

        .split-inner.reverse {
            flex-direction: row-reverse;
        }

        .split-img {
            flex: 1;
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            background: var(--bg-white);
        }

        .split-img img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            display: block;
            transition: var(--transition-base);
        }

        .split-img:hover img {
            transform: scale(1.02);
        }

        .split-text {
            flex: 1;
        }

        .split-text .subtitle-badge {
            display: inline-block;
            background: rgba(240, 138, 36, 0.12);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .split-text h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .split-text p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .split-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .split-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-sub);
            margin-bottom: 10px;
        }

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

        .btn-secondary-custom {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition-base);
        }

        .btn-secondary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(33, 90, 142, 0.2);
        }

        /* ===== 内容卡片区 ===== */
        .cards-section {
            padding: 96px 0;
        }

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: var(--transition-base);
            position: relative;
        }

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

        .feature-card .card-icon {
            width: 48px;
            height: 48px;
            background: rgba(33, 90, 142, 0.08);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .feature-card .card-desc {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .feature-card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .feature-card .card-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        /* ===== 信息列表 ===== */
        .info-section {
            padding: 96px 0;
            background: var(--bg-white);
        }

        .info-list-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .info-thumb {
            width: 200px;
            height: 130px;
            border-radius: var(--radius-card);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-blue);
        }

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

        .info-body {
            flex: 1;
        }

        .info-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 8px;
        }

        .info-meta .badge-cat {
            background: rgba(33, 90, 142, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 20px;
        }

        .info-meta .info-date {
            font-size: 13px;
            color: var(--text-light);
        }

        .info-body h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .info-body h3 a {
            color: var(--text-main);
        }

        .info-body h3 a:hover {
            color: var(--primary);
        }

        .info-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .info-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
        }

        .info-link:hover {
            color: var(--accent);
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
            font-size: 15px;
        }

        /* ===== 适用场景 ===== */
        .scenario-section {
            padding: 96px 0;
            background: linear-gradient(180deg, var(--bg-blue) 0%, var(--bg-main) 100%);
        }

        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
            height: 100%;
            transition: var(--transition-base);
            border-top: 3px solid transparent;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-top-color: var(--accent);
        }

        .scenario-card .scenario-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(240, 138, 36, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .scenario-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

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

        /* ===== FAQ ===== */
        .faq-section {
            padding: 96px 0 80px;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
        }

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

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            cursor: pointer;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-main);
            padding: 6px 0;
        }

        .faq-question .faq-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(33, 90, 142, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--primary);
            flex-shrink: 0;
            transition: var(--transition-base);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0;
            visibility: hidden;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 10px 0 0;
            visibility: visible;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== CTA 横幅 ===== */
        .cta-section {
            padding: 40px 0 0;
        }

        .cta-banner {
            background: var(--primary);
            border-radius: var(--radius-img);
            padding: 40px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
            box-shadow: 0 12px 32px rgba(33, 90, 142, 0.25);
        }

        .cta-banner h2 {
            color: #fff;
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .cta-banner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            margin-bottom: 0;
        }

        .cta-banner .btn-cta-accent {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 12px 32px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .cta-banner .btn-cta-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(240, 138, 36, 0.3);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.9);
            padding: 64px 0 0;
            margin-top: 80px;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #fff;
        }

        .site-footer p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
        }

        .site-footer h5 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }

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

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

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

        .site-footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

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

        .site-footer .footer-contact li i {
            width: 18px;
            color: var(--accent);
            text-align: center;
        }

        .footer-bottom {
            margin-top: 48px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }

        /* ===== 固定底部转化条 ===== */
        .bottom-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-top: 1px solid var(--border-color);
            padding: 10px 0;
            display: none;
            box-shadow: 0 -4px 20px rgba(26, 51, 76, 0.06);
        }

        .bottom-cta-bar.show {
            display: block;
        }

        .bottom-cta-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .bottom-cta-bar .cta-text {
            font-size: 15px;
            color: var(--text-main);
            font-weight: 500;
            margin: 0;
        }

        .bottom-cta-bar .cta-text span {
            color: var(--accent);
        }

        .bottom-cta-bar .btn-cta-sm {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .bottom-cta-bar .btn-cta-sm:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(240, 138, 36, 0.3);
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .category-hero h1 {
                font-size: 36px;
            }
            .split-inner {
                gap: 40px;
            }
        }

        @media (max-width: 991.98px) {
            .site-header .navbar-nav {
                gap: 0;
                padding: 12px 0;
            }
            .site-header .nav-link {
                padding: 10px 20px;
            }
            .site-header .nav-link.active::after {
                display: none;
            }
            .site-header .btn-nav-cta {
                margin: 10px 20px 16px;
                display: inline-block;
                text-align: center;
            }
            .category-hero {
                padding: 60px 0;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .hero-img-wrap {
                margin-top: 32px;
            }
            .split-inner,
            .split-inner.reverse {
                flex-direction: column;
                gap: 32px;
            }
            .split-img img {
                height: 240px;
            }
            .steps-section,
            .cards-section,
            .info-section,
            .scenario-section,
            .faq-section {
                padding: 72px 0;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .info-thumb {
                width: 160px;
                height: 105px;
            }
            .cta-banner {
                padding: 32px 28px;
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .cta-banner h2 {
                font-size: 22px;
            }
            .cta-banner p {
                font-size: 15px;
            }
            .site-footer {
                padding-top: 48px;
            }
        }

        @media (max-width: 767.98px) {
            body {
                padding-bottom: 60px;
            }
            .category-hero {
                padding: 48px 0;
            }
            .category-hero h1 {
                font-size: 27px;
            }
            .category-hero .hero-desc {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-custom {
                justify-content: center;
                text-align: center;
            }
            .hero-img-wrap img {
                height: 220px;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .section-head .section-desc {
                font-size: 15px;
            }
            .step-item {
                padding: 24px 20px;
            }
            .info-list-item {
                flex-direction: column;
                gap: 14px;
            }
            .info-thumb {
                width: 100%;
                height: 180px;
            }
            .info-body h3 {
                font-size: 17px;
            }
            .faq-question {
                font-size: 15px;
            }
            .faq-answer p {
                font-size: 14px;
            }
            .bottom-cta-bar .container {
                flex-direction: column;
                gap: 6px;
                justify-content: center;
                text-align: center;
            }
            .bottom-cta-bar {
                padding: 8px 0;
            }
            .bottom-cta-bar .btn-cta-sm {
                width: 100%;
                text-align: center;
            }
            .bottom-cta-bar .cta-text {
                font-size: 13px;
            }
        }

        @media (max-width: 575.98px) {
            .category-hero {
                padding: 40px 0;
            }
            .category-hero h1 {
                font-size: 24px;
                line-height: 1.4;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .hero-img-wrap {
                margin: 20px 0 0;
            }
            .hero-img-wrap img {
                height: 190px;
            }
            .hero-img-overlay p {
                font-size: 13px;
            }
            .split-img img {
                height: 190px;
            }
            .split-text h2 {
                font-size: 24px;
            }
            .split-text p {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .faq-question {
                font-size: 14px;
                line-height: 1.5;
            }
            .cta-banner {
                padding: 24px 20px;
            }
            .cta-banner h2 {
                font-size: 20px;
            }
            .site-footer h5 {
                margin-bottom: 14px;
            }
            .site-footer ul li {
                margin-bottom: 10px;
            }
        }

/* roulang page: article */
:root {
  --primary: #215A8E;
  --primary-dark: #1A4A75;
  --primary-light: #2B6FA3;
  --accent: #F08A24;
  --accent-dark: #D97A1E;
  --accent-light: #FFF3E8;
  --bg: #F7FAFC;
  --bg-light: #EAF1F8;
  --white: #FFFFFF;
  --text: #1F2D3D;
  --text-secondary: #5C6B7A;
  --text-muted: #8A99A8;
  --border: #EBF0F5;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 4px 12px rgba(26, 51, 76, 0.06);
  --shadow-md: 0 10px 28px rgba(26, 51, 76, 0.12);
  --transition: all 0.3s ease;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 72px;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { padding-left: 1.2rem; }
button, input, select, textarea { font-family: inherit; }

.container { max-width: 1320px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn:focus, .btn:focus-visible {
  outline: 3px solid rgba(33, 90, 142, 0.25);
  box-shadow: 0 0 0 3px rgba(33, 90, 142, 0.15);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline-primary:hover {
  background: rgba(33, 90, 142, 0.05);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(240, 138, 36, 0.3);
}
.btn-lg { padding: 12px 32px; font-size: 17px; border-radius: 10px; }
.btn-sm { padding: 6px 16px; font-size: 14px; }

/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 2px 12px rgba(26, 51, 76, 0.08);
}
.navbar {
  padding: 0;
  min-height: 72px;
}
.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary) !important;
  letter-spacing: -0.5px;
  padding: 8px 0;
}
.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(33, 90, 142, 0.3);
}
.navbar-nav { gap: 4px; }
.navbar-nav .nav-item { position: relative; }
.navbar-nav .nav-link {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}
.navbar-nav .nav-link:hover {
  color: var(--primary);
  background: rgba(33, 90, 142, 0.05);
}
.navbar-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(33, 90, 142, 0.08);
}
.navbar-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 16px;
  right: 16px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px 3px 0 0;
}
.btn-nav-cta {
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  padding: 10px 24px;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(240, 138, 36, 0.25);
  margin-left: 8px;
}
.btn-nav-cta:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(240, 138, 36, 0.35);
}
.navbar-toggler {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  background: transparent;
}
.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='%235C6B7A' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}
.navbar-toggler:focus {
  outline: 3px solid rgba(33, 90, 142, 0.2);
  box-shadow: 0 0 0 3px rgba(33, 90, 142, 0.1);
}

/* 文章头部区 */
.article-hero {
  background: linear-gradient(135deg, #EAF1F8 0%, #F7FAFC 60%, #FFFFFF 100%);
  padding: 64px 0 48px;
  position: relative;
  border-bottom: 1px solid var(--border);
}
.article-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  z-index: 0;
  pointer-events: none;
}
.article-hero .container { position: relative; z-index: 1; }
.article-hero-inner { max-width: 900px; margin: 0 auto; }

/* 面包屑 */
.breadcrumb-wrap {
  margin-bottom: 24px;
}
.breadcrumb-wrap ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 0;
  font-size: 14px;
  color: var(--text-muted);
}
.breadcrumb-wrap li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb-wrap li + li::before {
  content: '›';
  color: #C0C8D2;
  font-size: 16px;
  margin: 0 8px;
  line-height: 1;
}
.breadcrumb-wrap a {
  color: var(--text-secondary);
  text-decoration: none;
}
.breadcrumb-wrap a:hover { color: var(--primary); }
.breadcrumb-wrap .current {
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 280px;
}

/* 文章标题 */
.article-title-wrap { margin-bottom: 20px; }
.article-title-wrap h1 {
  font-size: 40px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  word-break: break-word;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  font-size: 14px;
  color: var(--text-secondary);
}
.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta i {
  color: var(--primary);
  opacity: 0.7;
  font-size: 13px;
}
.article-meta .meta-cat {
  display: inline-flex;
  align-items: center;
  background: rgba(33, 90, 142, 0.1);
  color: var(--primary);
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
}
.article-meta .meta-divider {
  width: 4px;
  height: 4px;
  background: #C0C8D2;
  border-radius: 50%;
  display: inline-block;
}

/* 正文区 */
.article-main {
  padding: 48px 0 64px;
  background: var(--white);
}
.article-body-wrap {
  max-width: 780px;
  margin: 0 auto;
}
.article-body {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}
.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin: 40px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 32px 0 12px;
  line-height: 1.4;
}
.article-body h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin: 24px 0 10px;
}
.article-body p {
  margin-bottom: 20px;
  line-height: 1.8;
}
.article-body ul,
.article-body ol {
  margin-bottom: 20px;
  padding-left: 1.4rem;
}
.article-body li {
  margin-bottom: 8px;
  line-height: 1.7;
}
.article-body img {
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  margin: 24px auto;
  max-width: 100%;
}
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg-light);
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  font-style: normal;
}
.article-body blockquote p { margin-bottom: 0; }
.article-body pre {
  background: #1F2D3D;
  color: #E8F0F8;
  padding: 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  margin: 24px 0;
}
.article-body code {
  background: var(--bg-light);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.article-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-body a:hover {
  color: var(--accent);
}
.article-body figure {
  margin: 24px 0;
}
.article-body figcaption {
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* 文章标签 */
.article-tags {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.article-tags span { font-size: 14px; color: var(--text-muted); }
.article-tags .tag {
  display: inline-block;
  background: var(--bg-light);
  color: var(--primary);
  font-size: 13px;
  padding: 4px 14px;
  border-radius: 20px;
  font-weight: 500;
  transition: var(--transition);
}
.article-tags .tag:hover {
  background: var(--primary);
  color: #fff;
}

/* 内容未找到 */
.not-found {
  text-align: center;
  padding: 80px 24px;
}
.not-found .icon {
  font-size: 56px;
  color: #C0C8D2;
  margin-bottom: 20px;
}
.not-found h2 {
  font-size: 26px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* 相关推荐 */
.related-posts {
  background: var(--bg);
  padding: 64px 0;
  border-top: 1px solid var(--border);
}
.section-title-wrap {
  text-align: center;
  margin-bottom: 40px;
}
.section-label {
  display: inline-block;
  background: rgba(33, 90, 142, 0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.section-title-wrap h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 0;
}
.section-title-wrap .subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-top: 10px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.related-card {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  height: 100%;
  transition: var(--transition);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.related-card .card-img-wrap {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.related-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .card-img-wrap img {
  transform: scale(1.05);
}
.related-card .card-img-wrap::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, rgba(0,0,0,0.15), transparent);
}
.related-card .card-body-custom {
  padding: 20px;
}
.related-card .card-cat {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: 10px;
}
.related-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card .card-meta {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}
.related-card .card-link {
  color: var(--primary);
  font-weight: 500;
  font-size: 14px;
}
.related-card .card-link:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* CTA区域 */
.cta-section {
  padding: 48px 0;
  background: var(--accent-light);
  border-top: 1px solid rgba(240, 138, 36, 0.15);
}
.cta-inner {
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  box-shadow: 0 16px 40px rgba(33, 90, 142, 0.25);
  position: relative;
  overflow: hidden;
}
.cta-inner::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
}
.cta-inner h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 6px;
}
.cta-inner p {
  margin: 0;
  opacity: 0.9;
  font-size: 15px;
}
.cta-inner .btn-accent {
  padding: 14px 36px;
  font-size: 17px;
}

/* 返回入口 */
.back-entry-section {
  padding: 24px 0 0;
  background: var(--bg);
}
.back-entry-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--white);
  transition: var(--transition);
  margin-bottom: 20px;
}
.back-entry-link:hover {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* 页脚 */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.85);
  padding: 64px 0 0;
  margin-top: 0;
}
.site-footer .footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.site-footer .footer-brand .brand-icon {
  background: rgba(255,255,255,0.15);
  width: 38px;
  height: 38px;
}
.site-footer p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.7);
  margin-bottom: 0;
}
.site-footer h5 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
}
.site-footer h5::after {
  content: '';
  display: block;
  width: 28px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
  margin-top: 8px;
}
.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer ul li {
  margin-bottom: 10px;
}
.site-footer ul a {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  transition: color 0.2s ease;
}
.site-footer ul a:hover {
  color: #fff;
  text-decoration: none;
  padding-left: 4px;
}
.site-footer .footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
}
.site-footer .footer-contact i {
  color: var(--accent);
  font-size: 13px;
  width: 18px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 20px 0;
  margin-top: 48px;
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin: 0;
}

/* 固定底部转化条 */
.fixed-cta-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  padding: 12px 0;
  box-shadow: 0 -4px 20px rgba(26, 51, 76, 0.06);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}
.fixed-cta-bar.show {
  transform: translateY(0);
}
.fixed-cta-bar .cta-inner-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.fixed-cta-bar .cta-text {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}
.fixed-cta-bar .cta-text i {
  color: var(--accent);
  font-size: 18px;
}
.fixed-cta-bar .btn {
  padding: 8px 28px;
  font-size: 15px;
}

/* 响应式 */
@media (max-width: 1200px) {
  .container { max-width: 1140px; }
}

@media (max-width: 992px) {
  .navbar { min-height: 64px; }
  .navbar-collapse {
    background: var(--white);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    padding: 16px;
    box-shadow: 0 16px 40px rgba(26, 51, 76, 0.12);
  }
  .navbar-nav { gap: 4px; }
  .navbar-nav .nav-link {
    font-size: 18px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
  }
  .navbar-nav .nav-link.active::after {
    display: none;
  }
  .btn-nav-cta {
    margin: 12px 0 4px;
    width: 100%;
  }
  .article-title-wrap h1 {
    font-size: 34px;
  }
  .article-body-wrap { max-width: 100%; }
  .cta-inner { padding: 36px 32px; }
}

@media (max-width: 768px) {
  body { padding-bottom: 60px; }
  .article-hero { padding: 40px 0 32px; }
  .article-hero h1 { font-size: 30px; }
  .article-main { padding: 32px 0 48px; }
  .article-body h2 { font-size: 22px; }
  .article-body h3 { font-size: 18px; }
  .section-title-wrap h2 { font-size: 26px; }
  .related-posts { padding: 48px 0; }
  .cta-inner { flex-direction: column; text-align: center; padding: 32px 24px; }
  .cta-inner .btn-accent { width: 100%; margin-top: 8px; }
  .site-footer { padding: 48px 0 0; }
  .footer-bottom { margin-top: 32px; }
  .fixed-cta-bar { padding: 10px 0; }
  .fixed-cta-bar .cta-text { display: none; }
  .fixed-cta-bar .btn { width: 100%; font-size: 16px; padding: 12px 24px; }
  .fixed-cta-bar .container { padding: 0 12px; }
  .fixed-cta-bar .cta-inner-bar { justify-content: center; }
}

@media (max-width: 576px) {
  .article-title-wrap h1 { font-size: 26px; }
  .article-meta { gap: 8px 16px; }
  .breadcrumb-wrap .current { max-width: 200px; }
  .cta-inner { border-radius: var(--radius-md); padding: 28px 20px; }
  .cta-inner h2 { font-size: 22px; }
  .related-card .card-img-wrap { height: 150px; }
  .article-body { font-size: 15px; }
  .article-body p { margin-bottom: 16px; }
  .brand-wrap { font-size: 18px; }
  .brand-icon { width: 32px; height: 32px; font-size: 14px; }
}

/* roulang page: category2 */
:root {
  --primary: #215A8E;
  --primary-dark: #1A4A77;
  --primary-light: #EAF1F8;
  --accent: #F08A24;
  --accent-dark: #D9771B;
  --bg: #F7FAFC;
  --white: #FFFFFF;
  --text: #1F2D3D;
  --text-secondary: #5C6B7A;
  --muted: #8A99A8;
  --border: #EBF0F5;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-sm: 8px;
  --shadow: 0 4px 12px rgba(26, 51, 76, 0.06);
  --shadow-lg: 0 10px 28px rgba(26, 51, 76, 0.12);
  --transition: all 0.25s ease;
  --container-w: 1140px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  padding-bottom: 80px;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: var(--primary); transition: var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
.container { max-width: var(--container-w); }
.section { padding: 100px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--primary);
  background: var(--primary-light); padding: 6px 16px; border-radius: 20px;
  margin-bottom: 16px; letter-spacing: 0.5px;
}
.section-head h2 { font-size: 36px; font-weight: 700; color: var(--text); margin-bottom: 14px; line-height: 1.3; }
.section-head p { font-size: 16px; color: var(--text-secondary); margin: 0; }

.site-header {
  position: sticky; top: 0; z-index: 1030;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(26, 51, 76, 0.03);
}
.site-header .navbar { min-height: 72px; padding: 0; }
.brand-wrap { display: inline-flex; align-items: center; gap: 10px; }
.brand-icon {
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), #3A7EB3);
  color: #fff; font-size: 16px; border-radius: 10px;
  box-shadow: 0 4px 10px rgba(33, 90, 142, 0.25);
}
.brand-wrap span { font-size: 20px; font-weight: 700; color: var(--text); white-space: nowrap; }
.navbar-nav { gap: 4px; }
.nav-link {
  font-size: 16px; font-weight: 500; color: var(--text-secondary);
  padding: 8px 14px !important; border-radius: var(--radius-sm);
  position: relative; transition: var(--transition);
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 3px; background: var(--primary); border-radius: 3px;
}
.btn-nav-cta {
  background: var(--accent); color: #fff; font-weight: 600;
  padding: 10px 24px; border-radius: var(--radius-sm);
  border: none; white-space: nowrap; transition: var(--transition);
  box-shadow: 0 4px 12px rgba(240, 138, 36, 0.22);
}
.btn-nav-cta:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(240, 138, 36, 0.3); }
.navbar-toggler { border: none; padding: 6px 10px; outline: none; }
.navbar-toggler:focus { box-shadow: none; }
.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='%23215A8E' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"); }

.category-hero {
  position: relative; padding: 90px 0 80px;
  background: linear-gradient(135deg, #EAF1F8 0%, #F7FAFC 60%, #FFFFFF 100%);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.category-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover; background-position: center;
  opacity: 0.08; pointer-events: none;
}
.category-hero .container { position: relative; z-index: 1; }
.breadcrumb-custom { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); margin-bottom: 24px; flex-wrap: wrap; }
.breadcrumb-custom a { color: var(--muted); }
.breadcrumb-custom a:hover { color: var(--primary); }
.breadcrumb-custom .sep { color: #C0CAD4; }
.breadcrumb-custom .current { color: var(--text-secondary); font-weight: 500; }
.page-title { font-size: 46px; font-weight: 700; color: var(--text); line-height: 1.25; margin-bottom: 18px; letter-spacing: 0.5px; }
.page-subtitle { font-size: 18px; color: var(--text-secondary); max-width: 620px; line-height: 1.8; margin-bottom: 0; }

.btn-primary-custom {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary); color: #fff; font-weight: 600;
  padding: 12px 28px; border-radius: var(--radius-sm);
  border: none; transition: var(--transition);
  box-shadow: 0 4px 14px rgba(33, 90, 142, 0.2);
}
.btn-primary-custom:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(33, 90, 142, 0.26); }
.btn-outline-custom {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--primary); font-weight: 600;
  padding: 12px 28px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--primary); transition: var(--transition);
}
.btn-outline-custom:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateY(-2px); }

.service-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px 28px;
  height: 100%; transition: var(--transition);
  box-shadow: var(--shadow);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: #DCE6F0; }
.card-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 22px; transition: var(--transition);
}
.service-card:hover .card-icon { background: var(--primary); color: #fff; box-shadow: 0 6px 16px rgba(33, 90, 142, 0.22); }
.service-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; color: var(--text); }
.service-card p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; margin: 0; }
.card-link { display: inline-flex; align-items: center; gap: 4px; font-size: 14px; font-weight: 600; color: var(--primary); margin-top: 16px; }
.card-link:hover { color: var(--accent); }

.feature-row { align-items: center; }
.feature-image { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.feature-image img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; transition: transform 0.5s ease; }
.feature-image:hover img { transform: scale(1.03); }
.feature-badge {
  position: absolute; top: 20px; left: 20px;
  background: rgba(255, 255, 255, 0.92); color: var(--primary);
  font-size: 13px; font-weight: 600; padding: 6px 16px;
  border-radius: 20px; box-shadow: 0 4px 12px rgba(26, 51, 76, 0.08);
}
.feature-content .label-line {
  display: inline-block; width: 36px; height: 4px; background: var(--accent);
  border-radius: 4px; margin-bottom: 18px;
}
.feature-content h3 { font-size: 28px; font-weight: 700; line-height: 1.4; margin-bottom: 16px; }
.feature-content p { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 24px; }

.scenario-section { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.scenario-list { margin-top: 12px; }
.scenario-list li {
  display: flex; gap: 14px; padding: 18px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.scenario-list li:last-child { border-bottom: none; }
.scenario-icon {
  flex: 0 0 44px; height: 44px; width: 44px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 17px;
}
.scenario-list h4 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.scenario-list p { font-size: 15px; color: var(--text-secondary); margin: 0; line-height: 1.65; }

.process-section { background: var(--bg); }
.steps-wrap { position: relative; }
.step-line { position: absolute; top: 40px; left: 60px; right: 60px; height: 2px; background: var(--border); z-index: 0; }
.step-item { text-align: center; position: relative; z-index: 1; padding: 0 12px; }
.step-num {
  width: 80px; height: 80px; margin: 0 auto 20px;
  background: var(--white); border: 2px solid var(--primary);
  color: var(--primary); font-size: 22px; font-weight: 700;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 18px rgba(26, 51, 76, 0.08); transition: var(--transition);
}
.step-item:hover .step-num { background: var(--primary); color: #fff; transform: translateY(-4px); }
.step-item h4 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; margin: 0; }

.faq-section { background: #fff; }
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 4px; cursor: pointer; transition: var(--transition);
  border: none; background: transparent; width: 100%; text-align: left;
}
.faq-question span { font-size: 17px; font-weight: 600; color: var(--text); }
.faq-question .faq-icon {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; flex-shrink: 0; transition: transform 0.25s ease;
}
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-question:hover .faq-question span { color: var(--primary); }
.faq-body { padding: 0 4px 22px; }
.faq-body p { font-size: 15px; color: var(--text-secondary); line-height: 1.75; margin: 0; }

.cta-banner {
  background: linear-gradient(120deg, var(--primary-dark), #2B6FA3 60%, #357FB8);
  color: #fff; padding: 56px 0; position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ""; position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover; background-position: center; opacity: 0.08;
}
.cta-banner .container { position: relative; z-index: 1; }
.cta-banner h3 { font-size: 30px; font-weight: 700; margin-bottom: 10px; }
.cta-banner p { font-size: 16px; opacity: 0.85; margin-bottom: 0; }

.site-footer {
  background: #142B42; color: rgba(255, 255, 255, 0.72);
  padding: 60px 0 0; font-size: 15px;
}
.site-footer .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.site-footer .footer-brand .brand-icon { background: var(--accent); box-shadow: none; }
.site-footer .footer-brand strong { color: #fff; font-size: 19px; font-weight: 700; }
.site-footer p { line-height: 1.75; max-width: 340px; margin-bottom: 0; }
.site-footer h5 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer ul a { color: rgba(255, 255, 255, 0.65); transition: var(--transition); }
.site-footer ul a:hover { color: #fff; opacity: 1; }
.site-footer .footer-contact li { display: flex; align-items: center; gap: 10px; color: rgba(255, 255, 255, 0.65); }
.site-footer .footer-contact i { color: var(--accent); width: 16px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0; margin-top: 40px; text-align: center;
}
.footer-bottom p { font-size: 14px; color: rgba(255, 255, 255, 0.5); margin: 0; }

.fixed-cta {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 1050;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 12px 0; transform: translateY(100%);
  opacity: 0; transition: transform 0.35s ease, opacity 0.35s ease;
  box-shadow: 0 -4px 20px rgba(26, 51, 76, 0.05);
}
.fixed-cta.show { transform: translateY(0); opacity: 1; }
.fixed-cta .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.fixed-cta .cta-text { font-size: 16px; font-weight: 600; color: var(--text); margin: 0; display: flex; align-items: center; gap: 12px; }
.fixed-cta .cta-text i { color: var(--accent); font-size: 20px; }

@media (max-width: 1199px) {
  .container { max-width: 960px; }
  .page-title { font-size: 40px; }
}
@media (max-width: 991px) {
  .section { padding: 80px 0; }
  .navbar-collapse {
    padding: 16px 0; background: #fff;
    border-radius: var(--radius); box-shadow: var(--shadow-lg);
    margin-top: 10px;
  }
  .nav-link { font-size: 17px; padding: 12px 16px !important; }
  .nav-link.active::after { display: none; }
  .nav-link.active { background: var(--primary-light); border-radius: var(--radius-sm); }
  .btn-nav-cta { margin: 12px 16px 8px; display: inline-flex; justify-content: center; }
  .step-line { display: none; }
  .step-item { margin-bottom: 28px; }
  .feature-content { margin-top: 40px; }
  .feature-content h3 { font-size: 24px; }
  .cta-banner h3 { font-size: 24px; }
  .fixed-cta .cta-text { font-size: 14px; }
}
@media (max-width: 767px) {
  body { padding-bottom: 64px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 28px; }
  .category-hero { padding: 60px 0 50px; }
  .page-title { font-size: 34px; }
  .page-subtitle { font-size: 16px; }
  .service-card { padding: 28px 22px; }
  .feature-image img { aspect-ratio: 16/10; }
  .scenario-list li { padding: 14px 0; }
  .cta-banner { padding: 42px 0; }
  .cta-banner .container { display: block !important; text-align: center; }
  .cta-banner .btn { margin-top: 20px; }
  .fixed-cta { padding: 0; }
  .fixed-cta .container { padding: 0; }
  .fixed-cta .cta-text { display: none; }
  .fixed-cta .btn-cta-fixed { width: 100%; text-align: center; border-radius: 0; padding: 14px; }
}
.btn-cta-fixed {
  display: inline-block; background: var(--accent); color: #fff;
  font-weight: 600; padding: 11px 32px; border-radius: var(--radius-sm);
  border: 1px solid var(--accent); transition: var(--transition);
}
.btn-cta-fixed:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; transform: translateY(-2px); }
@media (max-width: 575px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .brand-wrap span { font-size: 17px; }
  .brand-icon { width: 34px; height: 34px; font-size: 14px; }
  .page-title { font-size: 30px; }
  .section-head h2 { font-size: 26px; }
}

/* roulang page: category3 */
:root {
  --primary: #215A8E;
  --primary-dark: #16466F;
  --primary-light: #2B6FA3;
  --accent: #F08A24;
  --accent-dark: #D9740E;
  --bg: #F7FAFC;
  --bg-blue: #EAF1F8;
  --white: #FFFFFF;
  --text: #1F2D3D;
  --text-secondary: #5C6B7A;
  --text-muted: #8A99A8;
  --border: #D6E0E9;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 4px 12px rgba(26, 51, 76, 0.06);
  --shadow-md: 0 10px 28px rgba(26, 51, 76, 0.12);
  --transition: all 0.25s ease;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding-bottom: 84px;
}

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

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

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

.container {
  max-width: 1200px;
}

/* ===== Header & Nav ===== */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1030;
}

.site-header .navbar {
  min-height: 72px;
  padding: 0;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--primary);
  white-space: nowrap;
}

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

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  flex-shrink: 0;
}

.navbar-nav {
  gap: 4px;
}

.nav-link {
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 14px !important;
  border-radius: 8px;
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(33, 90, 142, 0.06);
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.btn-nav-cta {
  background: var(--accent);
  border: 1px solid var(--accent);
  color: #fff;
  font-weight: 600;
  border-radius: 8px;
  padding: 8px 22px;
  font-size: 16px;
  transition: var(--transition);
}

.btn-nav-cta:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(240, 138, 36, 0.25);
}

.navbar-toggler {
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 8px;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(33, 90, 142, 0.15);
  outline: none;
}

@media (max-width: 991px) {
  .navbar-collapse {
    background: var(--white);
    padding: 16px;
    border-radius: var(--radius);
    margin-top: 12px;
    box-shadow: 0 8px 24px rgba(26, 51, 76, 0.08);
    border: 1px solid var(--border);
  }
  .nav-link.active::after {
    display: none;
  }
  .btn-nav-cta {
    margin-top: 12px;
    width: 100%;
    text-align: center;
  }
}

/* ===== Button framework ===== */
.btn {
  border-radius: 8px;
  font-weight: 600;
  padding: 10px 24px;
  transition: var(--transition);
}

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

.btn-primary:hover,
.btn-primary:focus {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(33, 90, 142, 0.25);
}

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

.btn-accent:hover,
.btn-accent:focus {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(240, 138, 36, 0.3);
}

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

.btn-outline-main:hover,
.btn-outline-main:focus {
  background: rgba(33, 90, 142, 0.05);
  border-color: var(--primary-dark);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(33, 90, 142, 0.15);
}

/* ===== Category Hero ===== */
.cat-hero {
  position: relative;
  background: linear-gradient(135deg, #EAF1F8 0%, #F7FAFC 100%);
  padding: 72px 0 64px;
  overflow: hidden;
}

.cat-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  opacity: 0.16;
}

.cat-hero .container {
  position: relative;
  z-index: 1;
}

.breadcrumb-nav {
  margin-bottom: 24px;
}

.breadcrumb-nav .breadcrumb {
  background: transparent;
  margin: 0;
}

.breadcrumb-nav .breadcrumb-item a {
  color: var(--text-secondary);
  font-size: 14px;
}

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

.breadcrumb-nav .breadcrumb-item.active {
  color: var(--primary);
  font-size: 14px;
}

.cat-hero h1 {
  font-size: 44px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.3;
}

.cat-hero-lead {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 660px;
  margin-bottom: 30px;
  line-height: 1.75;
}

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

/* ===== Stat strip ===== */
.stat-strip {
  background: var(--primary);
  color: #fff;
  padding: 36px 0;
}

.stat-item {
  text-align: center;
}

.stat-item strong {
  font-size: 32px;
  font-weight: 800;
  display: block;
  margin-bottom: 4px;
  line-height: 1.2;
}

.stat-item span {
  font-size: 15px;
  opacity: 0.85;
}

/* ===== Section scaffold ===== */
.section-block {
  padding: 88px 0;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-block;
  background: rgba(33, 90, 142, 0.08);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.3;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 16px;
  margin: 0;
}

/* ===== Feature cards ===== */
.feature-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  background: var(--white);
  height: 100%;
}

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

.card-img-wrap {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

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

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

.feature-card .card-body {
  padding: 26px;
  position: relative;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(240, 138, 36, 0.14);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.feature-card .card-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card .card-body p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 14px;
  line-height: 1.7;
}

.detail-list li {
  padding: 4px 0;
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-list li::before {
  content: '\f058';
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--primary);
}

/* ===== Split block ===== */
.split-block {
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.split-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3;
}

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

.split-block .section-tag {
  margin-bottom: 14px;
}

.split-block h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 14px;
}

.split-block > .container > .row > .col-lg-6 > p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 20px;
}

.process-list {
  margin-bottom: 24px;
}

.process-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
}

.process-list li:last-child {
  border-bottom: none;
}

.process-list i {
  font-size: 20px;
  color: var(--primary);
  margin-top: 2px;
  width: 24px;
  text-align: center;
}

.process-list strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.process-list span {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== Steps ===== */
.step-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  height: 100%;
  position: relative;
  transition: var(--transition);
}

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

.step-num {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 14px;
  font-weight: 800;
  color: rgba(33, 90, 142, 0.25);
  letter-spacing: 1px;
}

.step-card i {
  font-size: 34px;
  color: var(--accent);
  margin-bottom: 18px;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.7;
}

/* ===== Scene cards ===== */
.scene-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  height: 100%;
  transition: var(--transition);
}

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

.scene-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(33, 90, 142, 0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}

.scene-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.scene-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-block {
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.accordion-item {
  border: none;
  border-bottom: 1px solid var(--border);
  background: transparent;
}

.accordion-button {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  box-shadow: none;
  padding: 20px 4px;
  border-radius: 0 !important;
}

.accordion-button:not(.collapsed) {
  color: var(--primary);
  background: transparent;
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(33, 90, 142, 0.12);
  outline: none;
}

.accordion-button::after {
  background-image: none;
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  content: '\f067';
  color: var(--primary);
  transform: none;
  transition: transform 0.2s ease;
}

.accordion-button:not(.collapsed)::after {
  content: '\f00d';
  transform: rotate(90deg);
}

.accordion-body {
  padding: 0 4px 20px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* ===== CTA banner ===== */
.cta-banner {
  padding: 40px 0 88px;
}

.cta-inner {
  background: linear-gradient(135deg, #215A8E, #2B6FA3);
  border-radius: 20px;
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: 0 16px 40px rgba(33, 90, 142, 0.18);
}

.cta-text h2 {
  color: #fff;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.cta-text p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  margin: 0;
}

.cta-inner .btn-accent {
  background: #fff;
  border-color: #fff;
  color: var(--primary);
  font-weight: 700;
}

.cta-inner .btn-accent:hover {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.9);
  color: var(--primary-dark);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

/* ===== Footer ===== */
.site-footer {
  background: #15314D;
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.site-footer .brand-icon {
  background: var(--accent);
}

.site-footer p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.65);
  max-width: 360px;
}

.site-footer h5 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.site-footer ul li {
  margin-bottom: 8px;
}

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

.site-footer ul li a:hover {
  color: #fff;
  opacity: 1;
}

.footer-contact li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact i {
  color: var(--accent);
  width: 16px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 32px;
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ===== Bottom CTA bar ===== */
.bottom-cta-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  padding: 12px 0;
  transform: translateY(100%);
  opacity: 0;
  transition: var(--transition);
  box-shadow: 0 -4px 20px rgba(26, 51, 76, 0.06);
  will-change: transform, opacity;
}

.bottom-cta-bar.show {
  transform: translateY(0);
  opacity: 1;
}

.bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.bar-text {
  font-size: 15px;
  color: var(--text);
  font-weight: 600;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .cat-hero {
    padding: 56px 0 48px;
  }
  .cat-hero h1 {
    font-size: 40px;
  }
  .section-block {
    padding: 64px 0;
  }
  .split-block {
    padding: 56px 0;
  }
  .stat-item strong {
    font-size: 28px;
  }
  .cta-inner {
    padding: 36px;
  }
}

@media (max-width: 768px) {
  body {
    padding-bottom: 72px;
  }
  .cat-hero h1 {
    font-size: 36px;
  }
  .cat-hero-lead {
    font-size: 16px;
  }
  .section-head {
    margin-bottom: 32px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .split-block h2 {
    font-size: 24px;
  }
  .cta-inner {
    padding: 28px 24px;
    text-align: center;
    justify-content: center;
  }
  .cta-text h2 {
    font-size: 24px;
  }
  .cta-inner .btn-accent {
    width: 100%;
  }
  .stat-item strong {
    font-size: 24px;
  }
  .stat-item span {
    font-size: 13px;
  }
  .bottom-cta-bar {
    padding: 10px 0;
  }
  .bar-text {
    display: none;
  }
  .bar-inner {
    justify-content: center;
  }
  .bottom-cta-bar .btn {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 576px) {
  .cat-hero {
    padding: 44px 0 40px;
  }
  .cat-hero h1 {
    font-size: 32px;
  }
  .cat-hero-actions .btn {
    width: 100%;
    text-align: center;
  }
  .section-block {
    padding: 48px 0;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .cta-banner {
    padding: 24px 0 64px;
  }
  .site-footer {
    padding: 40px 0 20px;
  }
  .footer-brand {
    font-size: 18px;
  }
}

@media (max-width: 400px) {
  .brand-wrap {
    font-size: 16px;
  }
  .brand-icon {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }
  .nav-link {
    font-size: 15px;
  }
}

/* roulang page: category4 */
:root {
  --primary: #215A8E;
  --primary-dark: #184A73;
  --primary-2: #2B6FA3;
  --accent: #F08A24;
  --accent-dark: #D97718;
  --bg-body: #F7FAFC;
  --bg-blue: #EAF1F8;
  --white: #ffffff;
  --text: #1F2D3D;
  --text-2: #5C6B7A;
  --text-3: #8A99A8;
  --border: #EBF0F5;
  --radius-lg: 16px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 12px rgba(26, 51, 76, 0.06);
  --shadow-md: 0 10px 28px rgba(26, 51, 76, 0.12);
  --transition: all 0.25s ease;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  padding-bottom: 76px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
}
p {
  color: var(--text-2);
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: var(--primary-dark);
}
img {
  max-width: 100%;
  height: auto;
}
.container {
  max-width: 1200px;
}
.bg-blue {
  background-color: var(--bg-blue);
}

/* ===== 按钮 ===== */
.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
  padding: 10px 24px;
  border: 1px solid transparent;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.btn-primary {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-primary:hover, .btn-primary:focus {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(33, 90, 142, 0.25);
}
.btn-outline-primary {
  background-color: #fff;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-outline-primary:hover, .btn-outline-primary:focus {
  background-color: rgba(33, 90, 142, 0.06);
  border-color: var(--primary-dark);
  color: var(--primary-dark);
  transform: translateY(-2px);
}
.btn-accent {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-accent:hover, .btn-accent:focus {
  background-color: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(240, 138, 36, 0.35);
}
.btn-lg {
  padding: 14px 36px;
  font-size: 18px;
  border-radius: 10px;
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 2px 12px rgba(26, 51, 76, 0.08);
}
.navbar {
  min-height: 72px;
  padding: 0;
}
.brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.brand-wrap:hover {
  color: var(--primary);
}
.brand-icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 4px 10px rgba(33, 90, 142, 0.25);
}
.navbar-nav .nav-link {
  color: var(--text);
  font-weight: 500;
  font-size: 16px;
  padding: 8px 14px !important;
  position: relative;
  border-radius: 0;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--primary);
}
.navbar-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: -2px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}
.btn-nav-cta {
  background-color: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-weight: 600;
  padding: 10px 24px;
  border: none;
  white-space: nowrap;
}
.btn-nav-cta:hover, .btn-nav-cta:focus {
  background-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(240, 138, 36, 0.35);
}
.navbar-toggler {
  border: none;
  background: transparent;
  padding: 4px 8px;
}
.navbar-toggler:focus {
  box-shadow: none;
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 8px;
}
.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='%23215A8E' stroke-linecap='round' stroke-miterlimit='10' stroke-width='3' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  width: 26px;
  height: 26px;
}

/* ===== 页头 ===== */
.page-hero {
  position: relative;
  padding: 80px 0 72px;
  background: linear-gradient(135deg, #EAF1F8 0%, #FFFFFF 60%);
  overflow: hidden;
}
.page-hero .hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.08;
  pointer-events: none;
}
.page-hero .container {
  position: relative;
  z-index: 1;
}
.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-3);
  margin-bottom: 24px;
}
.hero-breadcrumb a {
  color: var(--text-3);
}
.hero-breadcrumb a:hover {
  color: var(--primary);
}
.hero-breadcrumb i {
  font-size: 12px;
  color: var(--text-3);
}
.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.page-hero .hero-sub {
  font-size: 18px;
  color: var(--text-2);
  max-width: 720px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-dots .dot-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--text-2);
}
.hero-dots .dot-item i {
  color: var(--accent);
}

/* ===== 通用板块 ===== */
.section {
  padding: 96px 0;
}
.section-head {
  margin-bottom: 48px;
}
.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-head .eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}
.section-head .subtitle {
  font-size: 17px;
  color: var(--text-2);
  max-width: 680px;
}
.section-head.text-center .subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ===== 图片卡片 ===== */
.img-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  background: #fff;
}
.img-card:hover {
  box-shadow: var(--shadow-md);
}
.img-card img {
  width: 100%;
  display: block;
}

/* ===== 检查列表 ===== */
.check-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
}
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.7;
}
.check-list li i {
  color: var(--primary);
  margin-top: 5px;
  font-size: 14px;
  width: 18px;
  height: 18px;
  background: var(--bg-blue);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.check-list li strong {
  color: var(--text);
}

/* ===== 流程步骤 ===== */
.flow-step {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  height: 100%;
  position: relative;
  transition: var(--transition);
}
.flow-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.flow-step .step-num {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--bg-blue);
  color: var(--primary);
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 20px;
}
.flow-step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.flow-step p {
  font-size: 15px;
  color: var(--text-2);
  margin-bottom: 0;
  line-height: 1.7;
}

/* ===== 特色卡片 ===== */
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  height: 100%;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--bg-blue);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon {
  background: var(--primary);
  color: #fff;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-2);
  margin-bottom: 0;
  line-height: 1.7;
}

/* ===== 场景列表 ===== */
.scene-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 32px;
}
.scene-item {
  display: flex;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.scene-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: rgba(33, 90, 142, 0.2);
}
.scene-item .scene-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--bg-blue);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.scene-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}
.scene-item p {
  font-size: 15px;
  color: var(--text-2);
  margin-bottom: 0;
}

/* ===== FAQ 手风琴 ===== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}
.accordion-item {
  border: none;
  background: transparent;
  border-bottom: 1px solid var(--border);
}
.accordion-item:first-child {
  border-top: 1px solid var(--border);
}
.accordion-button {
  background: transparent;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  padding: 20px 8px;
  box-shadow: none;
  transition: var(--transition);
}
.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23215A8E'%3e%3cpath fill-rule='evenodd' d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5h-4.5a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2Z'/%3e%3c/svg%3e");
  transition: transform 0.25s ease;
  background-size: 14px;
  background-position: center;
  width: 18px;
  height: 18px;
}
.accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23F08A24'%3e%3cpath fill-rule='evenodd' d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5h-4.5a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2Z'/%3e%3c/svg%3e");
}
.accordion-button:not(.collapsed) {
  background: transparent;
  color: var(--primary);
  box-shadow: none;
}
.accordion-button:focus {
  box-shadow: none;
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 8px;
}
.accordion-body {
  padding: 0 8px 24px;
}
.accordion-body p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: 0;
}

/* ===== CTA 横幅 ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  border-radius: 20px;
  padding: 64px 48px;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 260px;
  height: 260px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}
.cta-banner::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: -100px;
  width: 200px;
  height: 200px;
  background: rgba(240, 138, 36, 0.25);
  border-radius: 50%;
}
.cta-banner h2 {
  color: #fff;
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
}
.cta-banner .btn-accent {
  position: relative;
  z-index: 1;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #16324A;
  color: rgba(255, 255, 255, 0.75);
  padding-top: 64px;
  margin-top: 96px;
}
.site-footer .footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}
.site-footer .footer-brand .brand-icon {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}
.site-footer p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 0;
}
.site-footer h5 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
}
.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer ul li {
  margin-bottom: 10px;
}
.site-footer ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: var(--transition);
}
.site-footer ul li a:hover {
  color: #fff;
}
.site-footer .footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}
.site-footer .footer-contact i {
  width: 18px;
  color: var(--accent);
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  margin-top: 48px;
  text-align: center;
}
.footer-bottom p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
}

/* ===== 底部固定转化条 ===== */
.bottom-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  padding: 14px 0;
  transform: translateY(110%);
  transition: transform 0.35s ease;
  box-shadow: 0 -4px 16px rgba(26, 51, 76, 0.06);
}
.bottom-cta.visible {
  transform: translateY(0);
}
.bottom-cta .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.bottom-cta .cta-text {
  font-size: 15px;
  color: var(--text);
  font-weight: 600;
}
.bottom-cta .btn {
  flex-shrink: 0;
}

/* ===== 响应式 ===== */
@media (max-width: 1199.98px) {
  .container {
    max-width: 960px;
  }
}
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: #fff;
    padding: 16px;
    border-radius: 12px;
    margin-top: 8px;
    box-shadow: 0 12px 32px rgba(26, 51, 76, 0.12);
    max-height: calc(100vh - 90px);
    overflow-y: auto;
  }
  .navbar-nav {
    margin: 0 !important;
    width: 100%;
  }
  .navbar-nav .nav-link {
    padding: 10px 0 !important;
    font-size: 17px;
  }
  .navbar-nav .nav-link.active::after {
    display: none;
  }
  .nav-item {
    border-bottom: 1px solid var(--border);
  }
  .nav-item:last-child {
    border-bottom: none;
  }
  .btn-nav-cta {
    width: 100%;
    margin-top: 12px;
    text-align: center;
  }
  .page-hero h1 {
    font-size: 36px;
  }
  .section {
    padding: 72px 0;
  }
  .section-head h2 {
    font-size: 30px;
  }
  .cta-banner {
    padding: 48px 28px;
  }
  .cta-banner h2 {
    font-size: 24px;
  }
}
@media (max-width: 767.98px) {
  .page-hero {
    padding: 56px 0 48px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .page-hero .hero-sub {
    font-size: 16px;
  }
  .section {
    padding: 56px 0;
  }
  .section-head {
    margin-bottom: 32px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .flow-step {
    padding: 24px;
  }
  .feature-card {
    padding: 24px;
  }
  .cta-banner {
    padding: 40px 24px;
    border-radius: 16px;
  }
  .bottom-cta .container {
    justify-content: center;
    padding: 8px 16px;
  }
  .bottom-cta .cta-text {
    display: none;
  }
  .bottom-cta {
    padding: 10px 0;
  }
  .bottom-cta .btn {
    width: 100%;
  }
  .site-footer {
    margin-top: 72px;
  }
}
@media (max-width: 575.98px) {
  .brand-wrap {
    font-size: 18px;
  }
  .brand-icon {
    width: 34px;
    height: 34px;
    font-size: 14px;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .hero-dots {
    gap: 8px;
  }
  .hero-dots .dot-item {
    padding: 6px 12px;
    font-size: 13px;
  }
}