/* roulang page: index */
:root {
  --primary: #2E6BFF;
  --primary-hover: #1F52CC;
  --accent: #7C9FFF;
  --accent-2: #C9AFF5;
  --bg: #F7FAFF;
  --card-bg: #FFFFFF;
  --text-main: #14213D;
  --text-sub: #5B6B8C;
  --border: #E5ECF8;
  --dark: #101B33;
  --radius-card: 20px;
  --radius-small: 6px;
  --shadow-card: 0 4px 20px rgba(20, 33, 61, 0.06);
  --shadow-hover: 0 12px 32px rgba(20, 33, 61, 0.12);
  --transition: 0.3s ease;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-main);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--primary-hover);
}
img {
  max-width: 100%;
  height: auto;
}
button {
  font-family: inherit;
}
.container {
  max-width: 1200px;
}
section {
  padding: 80px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}
.section-head p {
  color: var(--text-sub);
  font-size: 16px;
  max-width: 720px;
  margin: 0 auto;
}

/* ========== NAVIGATION ========== */
.navbar-custom {
  position: fixed;
  top: 16px;
  left: 24px;
  right: 24px;
  z-index: 1080;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 24px;
  box-shadow: 0 4px 20px rgba(20, 33, 61, 0.06);
  transition: box-shadow var(--transition);
}
.navbar-custom.scrolled {
  box-shadow: 0 8px 30px rgba(20, 33, 61, 0.08);
}
.navbar-custom .navbar-brand {
  font-weight: 700;
  font-size: 17px;
  color: var(--text-main);
  letter-spacing: -0.3px;
  padding: 0;
  margin-right: 0;
  white-space: nowrap;
}
.navbar-custom .navbar-brand .brand-main {
  color: var(--primary);
}
.navbar-custom .navbar-brand .brand-sub {
  font-weight: 500;
  font-size: 14px;
  color: var(--text-sub);
  display: block;
  line-height: 1.2;
  letter-spacing: 0.5px;
}
.navbar-custom .navbar-nav {
  gap: 4px;
  margin-left: 32px;
  margin-right: auto;
}
.navbar-custom .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  padding: 8px 16px !important;
  border-radius: 999px;
  transition: all var(--transition);
}
.navbar-custom .nav-link:hover {
  color: var(--primary);
  background: rgba(46, 107, 255, 0.08);
}
.navbar-custom .nav-link.active {
  color: var(--primary);
  background: rgba(46, 107, 255, 0.1);
  font-weight: 600;
}
.navbar-custom .nav-cta {
  margin-left: 16px;
}
.navbar-custom .btn-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--primary);
  border-radius: 999px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
  min-height: 44px;
}
.navbar-custom .btn-nav-cta:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(46, 107, 255, 0.3);
}
.navbar-custom .navbar-toggler {
  border: none;
  background: rgba(46, 107, 255, 0.1);
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--primary);
  font-size: 20px;
  min-height: 44px;
  min-width: 44px;
  box-shadow: none;
}
.navbar-custom .navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.25);
}
.navbar-custom .navbar-collapse {
  background: transparent;
}
@media (max-width: 991.98px) {
  .navbar-custom {
    border-radius: 24px;
    padding: 12px 16px;
  }
  .navbar-custom .navbar-collapse {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: #fff;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 12px 32px rgba(20, 33, 61, 0.12);
    border: 1px solid var(--border);
    max-height: 80vh;
    overflow-y: auto;
  }
  .navbar-custom .navbar-nav {
    margin-left: 0;
    gap: 8px;
    width: 100%;
  }
  .navbar-custom .nav-link {
    padding: 12px 16px !important;
    border-radius: 12px;
    font-size: 16px;
  }
  .navbar-custom .nav-cta {
    margin-left: 0;
    width: 100%;
    margin-top: 12px;
  }
  .navbar-custom .btn-nav-cta {
    width: 100%;
  }
}

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  background-color: #eef4ff;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 140px 0 90px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(247, 250, 255, 0.96) 0%, rgba(247, 250, 255, 0.85) 45%, rgba(247, 250, 255, 0.45) 100%);
  z-index: 1;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 40px;
  background: var(--bg);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  z-index: 2;
}
.hero .container {
  position: relative;
  z-index: 3;
}
.hero .hero-content {
  max-width: 680px;
}
.hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(46, 107, 255, 0.08);
  border: 1px solid rgba(46, 107, 255, 0.16);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
  letter-spacing: 0.4px;
}
.hero .hero-badge .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  display: inline-block;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5); }
  70% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}
.hero h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-main);
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}
.hero h1 .highlight {
  color: var(--primary);
  position: relative;
}
.hero .hero-sub {
  font-size: 17px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 540px;
}
.hero .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}
.btn-custom-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--primary);
  border-radius: 999px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  min-height: 48px;
  transition: all var(--transition);
}
.btn-custom-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(46, 107, 255, 0.3);
}
.btn-custom-primary:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.25);
}
.btn-custom-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 999px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  min-height: 48px;
  transition: all var(--transition);
}
.btn-custom-outline:hover {
  background: rgba(46, 107, 255, 0.08);
  color: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-2px);
}
.btn-custom-outline:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.25);
}
.hero .hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  color: var(--text-sub);
  font-size: 13px;
  font-weight: 500;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  max-width: 460px;
}
.hero .hero-trust i {
  color: var(--primary);
  margin-right: 4px;
}
@media (max-width: 767.98px) {
  .hero {
    min-height: 560px;
    padding: 130px 0 70px;
  }
  .hero h1 {
    font-size: 28px;
  }
  .hero .hero-sub {
    font-size: 15px;
  }
  .hero .hero-actions {
    flex-direction: column;
  }
  .hero .hero-actions .btn {
    width: 100%;
  }
}

/* ========== SERVICE SECTION ========== */
.service-section {
  background: var(--bg);
}
.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  height: 100%;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.service-card:hover::before {
  transform: scaleX(1);
}
.service-card .service-icon {
  width: 56px;
  height: 56px;
  background: rgba(46, 107, 255, 0.08);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--primary);
  margin-bottom: 20px;
  transition: background var(--transition);
}
.service-card:hover .service-icon {
  background: rgba(46, 107, 255, 0.14);
}
.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
}
.service-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 16px;
}
.service-card .service-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.service-card .service-link i {
  transition: transform var(--transition);
}
.service-card .service-link:hover i {
  transform: translateX(4px);
}

/* ========== STATS SECTION ========== */
.stats-section {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 20px;
  text-align: center;
  height: 100%;
  position: relative;
  transition: box-shadow var(--transition);
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 3px;
  background: var(--primary);
  border-radius: 0 0 4px 4px;
}
.stat-card:hover {
  box-shadow: var(--shadow-hover);
}
.stat-card .stat-number {
  font-size: 42px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  letter-spacing: -0.5px;
}
.stat-card .stat-label {
  font-size: 14px;
  color: var(--text-sub);
  margin-top: 4px;
  font-weight: 500;
}

/* ========== SOLUTION SECTION ========== */
.solution-section {
  background: var(--bg);
  overflow: hidden;
}
.solution-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.solution-media {
  min-height: 360px;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  position: relative;
}
.solution-media::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(16, 27, 51, 0.15), rgba(46, 107, 255, 0.1));
}
.solution-body {
  padding: 48px 40px;
}
.solution-body h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}
.solution-body .solution-desc {
  color: var(--text-sub);
  font-size: 15px;
  margin-bottom: 24px;
}
.solution-points {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
}
.solution-points li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  color: var(--text-main);
  margin-bottom: 14px;
  line-height: 1.7;
}
.solution-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}
.solution-points li strong {
  font-weight: 600;
}
@media (max-width: 991.98px) {
  .solution-media {
    min-height: 260px;
  }
  .solution-body {
    padding: 32px 24px;
  }
}

/* ========== CASE SECTION ========== */
.case-section {
  background: #fff;
}
.case-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  height: 100%;
  transition: all var(--transition);
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.case-card .case-thumb {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.case-card .case-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.case-card:hover .case-thumb img {
  transform: scale(1.04);
}
.case-card .case-body {
  padding: 24px;
}
.case-card .case-tag {
  display: inline-block;
  background: rgba(46, 107, 255, 0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-small);
  margin-bottom: 12px;
}
.case-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}
.case-card p {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 16px;
  line-height: 1.7;
}
.case-card .case-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.case-card .case-link:hover i {
  transform: translateX(4px);
}

/* ========== NEWS SECTION ========== */
.news-section {
  background: var(--bg);
}
.news-list {
  max-width: 860px;
  margin: 0 auto;
}
.news-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 20px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.news-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.news-item .news-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.news-item .news-cat {
  display: inline-block;
  background: rgba(46, 107, 255, 0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-small);
}
.news-item .news-date {
  font-size: 13px;
  color: var(--text-sub);
}
.news-item h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}
.news-item h3 a {
  color: var(--text-main);
  transition: color var(--transition);
}
.news-item h3 a:hover {
  color: var(--primary);
}
.news-item .news-summary {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item .news-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.news-empty {
  background: var(--card-bg);
  border: 2px dashed var(--border);
  border-radius: 16px;
  padding: 48px 20px;
  text-align: center;
  color: var(--text-sub);
  font-size: 15px;
}
.news-empty i {
  font-size: 36px;
  color: var(--border);
  display: block;
  margin-bottom: 12px;
}
@media (max-width: 767.98px) {
  .news-item {
    padding: 20px;
  }
  .news-item h3 {
    font-size: 18px;
  }
}

/* ========== FAQ SECTION ========== */
.faq-section {
  background: #fff;
}
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(46, 107, 255, 0.4);
  box-shadow: 0 4px 16px rgba(46, 107, 255, 0.06);
}
.faq-item .accordion-button {
  background: #fff;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  padding: 20px 24px;
  border: none;
  box-shadow: none;
  border-radius: 14px !important;
  transition: color var(--transition);
}
.faq-item .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: #fff;
  box-shadow: none;
}
.faq-item .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.15);
  border-radius: 14px !important;
}
.faq-item .accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%232E6BFF' class='bi bi-chevron-down' viewBox='0 0 16 16'%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 var(--transition);
}
.faq-item .accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
}
.faq-item .accordion-body {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
}
@media (max-width: 767.98px) {
  .faq-item .accordion-button {
    font-size: 15px;
    padding: 16px 18px;
  }
  .faq-item .accordion-body {
    padding: 0 18px 16px;
  }
}

/* ========== CTA BANNER ========== */
.cta-section {
  background: linear-gradient(135deg, #2E6BFF 0%, #6DA1FF 100%);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}
.cta-section::after {
  content: '';
  position: absolute;
  left: -60px;
  bottom: -100px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}
.cta-banner {
  text-align: center;
  position: relative;
  z-index: 2;
}
.cta-banner h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.cta-banner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.btn-cta-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  color: var(--primary);
  border: 2px solid #fff;
  border-radius: 999px;
  padding: 14px 36px;
  font-size: 16px;
  font-weight: 700;
  min-height: 48px;
  transition: all var(--transition);
}
.btn-cta-white:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16, 27, 51, 0.15);
}
.btn-cta-white:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.4);
}
@media (max-width: 767.98px) {
  .cta-section {
    padding: 56px 0;
  }
  .cta-banner h2 {
    font-size: 24px;
  }
  .btn-cta-white {
    width: 100%;
  }
}

/* ========== FOOTER ========== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 0;
}
.footer .footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}
.footer .footer-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.8;
  max-width: 280px;
  margin-bottom: 20px;
}
.footer .footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer .footer-links li {
  margin-bottom: 10px;
}
.footer .footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: color var(--transition);
}
.footer .footer-links a:hover {
  color: #fff;
}
.footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 48px;
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}
.footer .footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}
.footer .footer-bottom a:hover {
  color: #fff;
}
@media (max-width: 991.98px) {
  .footer .footer-col {
    margin-bottom: 32px;
  }
}

/* ========== BACK TO TOP ========== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(46, 107, 255, 0.3);
  border: none;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--primary-hover);
  color: #fff;
}
@media (max-width: 767.98px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
  }
}

/* roulang page: category1 */
:root {
            --primary: #2E6BFF;
            --primary-hover: #1F52CC;
            --accent: #7C9FFF;
            --accent2: #C9AFF5;
            --bg-light: #F7FAFF;
            --card-bg: #FFFFFF;
            --text-dark: #14213D;
            --text-muted: #5B6B8C;
            --border: #E5ECF8;
            --dark-bg: #101B33;
            --radius-card: 20px;
            --radius-img: 16px;
            --radius-btn: 999px;
            --shadow-card: 0 4px 20px rgba(20, 33, 61, 0.06);
            --shadow-hover: 0 12px 32px rgba(20, 33, 61, 0.12);
            --transition: 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1200px;
        }

        /* ===== 导航 ===== */
        .navbar-custom {
            position: fixed;
            top: 16px;
            left: 24px;
            right: 24px;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.85);
            -webkit-backdrop-filter: blur(20px);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(229, 236, 248, 0.9);
            border-radius: 999px;
            padding: 12px 24px;
            box-shadow: 0 4px 20px rgba(20, 33, 61, 0.05);
            transition: box-shadow 0.3s ease;
        }

        .navbar-custom.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }

        .navbar-brand {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            padding: 0;
            margin-right: 20px;
        }

        .brand-main {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.2px;
        }

        .brand-sub {
            font-size: 11px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.4px;
        }

        .navbar-custom .navbar-nav .nav-link {
            color: var(--text-dark);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 999px;
            transition: all 0.3s ease;
        }

        .navbar-custom .navbar-nav .nav-link:hover {
            color: var(--primary);
            background: rgba(46, 107, 255, 0.06);
        }

        .navbar-custom .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(46, 107, 255, 0.1);
            font-weight: 600;
        }

        .navbar-toggler {
            border: none;
            border-radius: 12px;
            padding: 8px 12px;
            color: var(--text-dark);
            background: transparent;
            font-size: 22px;
            line-height: 1;
            transition: background 0.3s ease;
        }

        .navbar-toggler:hover,
        .navbar-toggler:focus {
            background: rgba(46, 107, 255, 0.08);
            box-shadow: none;
            outline: none;
        }

        .nav-cta {
            margin-left: 16px;
        }

        .btn-nav-cta {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 999px;
            white-space: nowrap;
            border: 2px solid transparent;
            transition: all 0.3s ease;
        }

        .btn-nav-cta:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(46, 107, 255, 0.25);
        }

        .btn-nav-cta:focus-visible {
            border-color: rgba(255, 255, 255, 0.6);
            outline: none;
        }

        @media (max-width: 991.98px) {
            .navbar-custom {
                left: 16px;
                right: 16px;
                top: 12px;
                border-radius: 20px;
                padding: 12px 16px;
            }

            .navbar-collapse {
                background: #fff;
                border-radius: 20px;
                padding: 20px;
                margin-top: 16px;
                box-shadow: var(--shadow-card);
                border: 1px solid var(--border);
                max-height: 80vh;
                overflow-y: auto;
            }

            .navbar-custom .navbar-nav .nav-link {
                padding: 12px 16px;
                border-radius: 12px;
                font-size: 15px;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 16px;
            }

            .btn-nav-cta {
                width: 100%;
                text-align: center;
                display: block;
            }
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            position: relative;
            padding: 160px 0 64px;
            background: linear-gradient(135deg, #F0F6FF 0%, #E4EDFF 100%);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            border: 60px solid rgba(46, 107, 255, 0.05);
            top: -140px;
            right: 10%;
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 30px solid rgba(201, 175, 245, 0.15);
            bottom: -80px;
            left: 8%;
            pointer-events: none;
        }

        .breadcrumb-custom {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .breadcrumb-custom a {
            color: var(--accent);
        }

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

        .breadcrumb-custom .sep {
            margin: 0 8px;
            color: #B7C3E0;
        }

        .page-hero h1 {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--text-dark);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .page-hero .hero-sub {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: var(--text-muted);
            position: relative;
            z-index: 1;
        }

        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust i {
            color: var(--primary);
        }

        @media (max-width: 767.98px) {
            .page-hero {
                padding: 130px 0 48px;
            }

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

            .hero-trust {
                gap: 10px;
                font-size: 13px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }

        .section-sm {
            padding: 56px 0;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .section-sub {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 560px;
        }

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

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

        @media (max-width: 767.98px) {
            .section {
                padding: 56px 0;
            }

            .section-title {
                font-size: 24px;
            }
        }

        /* ===== 步骤区 ===== */
        .steps-wrap {
            position: relative;
        }

        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 24px 28px;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            position: relative;
            text-align: center;
            overflow: hidden;
        }

        .step-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

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

        .step-num {
            display: block;
            font-size: 44px;
            font-weight: 700;
            line-height: 1;
            color: rgba(46, 107, 255, 0.18);
            margin-bottom: 12px;
        }

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

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

        @media (max-width: 767.98px) {
            .step-card {
                padding: 24px 20px;
            }

            .step-num {
                font-size: 36px;
            }
        }

        /* ===== 功能卡片 ===== */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .feature-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .feature-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

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

        .badge-custom {
            display: inline-block;
            background: rgba(46, 107, 255, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            border-radius: 6px;
            padding: 4px 12px;
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease;
        }

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

        @media (max-width: 991.98px) {
            .feature-card .card-img {
                height: 160px;
            }
        }

        /* ===== 注意事项区 ===== */
        .notes-section {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 48px;
            box-shadow: var(--shadow-card);
            height: 100%;
        }

        .notes-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .notes-section .lead-text {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 24px;
        }

        .note-list {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
        }

        .note-list li {
            display: flex;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 15px;
            color: var(--text-dark);
        }

        .note-list .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
            margin-top: 10px;
        }

        .btn-primary-custom {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 999px;
            border: 2px solid transparent;
            transition: all 0.3s ease;
        }

        .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(46, 107, 255, 0.28);
        }

        .btn-primary-custom:focus-visible {
            border-color: rgba(255, 255, 255, 0.6);
            outline: none;
        }

        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 999px;
            border: 2px solid rgba(46, 107, 255, 0.4);
            transition: all 0.3s ease;
        }

        .btn-outline-custom:hover {
            background: rgba(46, 107, 255, 0.08);
            color: var(--primary-hover);
            border-color: var(--primary);
        }

        .btn-outline-custom:focus-visible {
            outline: 2px solid rgba(46, 107, 255, 0.5);
            outline-offset: 2px;
        }

        .notes-img-wrap {
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: 100%;
            min-height: 280px;
        }

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

        @media (max-width: 991.98px) {
            .notes-section {
                padding: 32px 24px;
                margin-bottom: 24px;
            }

            .notes-img-wrap {
                min-height: 220px;
            }
        }

        /* ===== FAQ ===== */
        .bg-soft {
            background: #EDF3FF;
        }

        .accordion-custom .accordion-item {
            border: 1px solid var(--border);
            border-radius: 12px !important;
            overflow: hidden;
            background: #fff;
            margin-bottom: 12px;
            box-shadow: 0 2px 8px rgba(20, 33, 61, 0.03);
            transition: border-color 0.3s ease;
        }

        .accordion-custom .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: var(--primary);
        }

        .accordion-custom .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            background: #fff;
            padding: 20px 24px;
            border: none;
            transition: color 0.3s ease;
        }

        .accordion-custom .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%232E6BFF' class='bi bi-chevron-down' viewBox='0 0 16 16'%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-custom .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(46, 107, 255, 0.04);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: none;
            border-color: var(--primary);
        }

        .accordion-custom .accordion-button:focus-visible {
            outline: 2px solid rgba(46, 107, 255, 0.4);
            outline-offset: -2px;
        }

        .accordion-custom .accordion-body {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        @media (max-width: 767.98px) {
            .accordion-custom .accordion-button {
                font-size: 15px;
                padding: 16px 18px;
            }

            .accordion-custom .accordion-body {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }

        /* ===== CTA 横幅 ===== */
        .cta-banner {
            background: linear-gradient(135deg, #2E6BFF 0%, #6DA1FF 100%);
            border-radius: 28px;
            padding: 56px 48px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            border: 40px solid rgba(255, 255, 255, 0.1);
            top: -120px;
            left: -60px;
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .btn-white {
            display: inline-block;
            background: #fff;
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            padding: 14px 36px;
            border-radius: 999px;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            position: relative;
            z-index: 1;
        }

        .btn-white:hover {
            background: #EAF0FF;
            color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
        }

        .btn-white:focus-visible {
            border-color: rgba(46, 107, 255, 0.5);
            outline: none;
        }

        @media (max-width: 767.98px) {
            .cta-banner {
                padding: 40px 24px;
                border-radius: 20px;
            }

            .cta-banner h2 {
                font-size: 22px;
            }

            .btn-white {
                width: 100%;
                display: block;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
            margin-top: 80px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 320px;
        }

        .footer-col .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

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

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

        .footer-bottom {
            margin-top: 48px;
            padding: 20px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 767.98px) {
            .footer {
                padding-top: 48px;
            }

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

/* roulang page: article */
:root{
  --primary:#2E6BFF;
  --primary-hover:#1F52CC;
  --primary-light:rgba(46,107,255,.08);
  --accent:#7C9FFF;
  --accent-light:rgba(124,159,255,.15);
  --accent-2:#C9AFF5;
  --bg-main:#F7FAFF;
  --card-bg:#FFFFFF;
  --text-main:#14213D;
  --text-sub:#5B6B8C;
  --border:#E5ECF8;
  --dark:#101B33;
  --radius-card:20px;
  --radius-btn:999px;
  --shadow-card:0 4px 20px rgba(20,33,61,.06);
  --shadow-hover:0 12px 32px rgba(20,33,61,.12);
  --font-main:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-main);
  background:var(--bg-main);
  color:var(--text-main);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;transition:all .3s ease}
img{max-width:100%;height:auto}
ul,ol{list-style:none;padding:0;margin:0}
button,input,textarea{font-family:inherit}

/* ===== 导航 ===== */
.navbar-custom{
  position:fixed;
  top:16px;
  left:24px;
  right:24px;
  z-index:1050;
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:999px;
  padding:10px 24px;
  box-shadow:var(--shadow-card);
  transition:box-shadow .3s ease;
}
.navbar-custom.scrolled{box-shadow:0 8px 30px rgba(0,0,0,.08)}
.navbar-custom .navbar-brand{
  display:flex;
  flex-direction:column;
  line-height:1.2;
  padding:0;
  margin-right:0;
}
.brand-main{
  font-size:17px;
  font-weight:700;
  color:var(--text-main);
  letter-spacing:-.3px;
  white-space:nowrap;
}
.brand-sub{
  font-size:11px;
  color:var(--text-sub);
  font-weight:500;
  letter-spacing:.2px;
}
.navbar-custom .navbar-nav{gap:2px}
.navbar-custom .nav-link{
  font-size:15px;
  font-weight:500;
  color:var(--text-main);
  padding:8px 16px !important;
  border-radius:999px;
  transition:all .3s ease;
}
.navbar-custom .nav-link:hover{
  color:var(--primary);
  background:var(--primary-light);
}
.navbar-custom .nav-link.active{
  color:var(--primary);
  background:var(--primary-light);
  font-weight:600;
}
.btn-nav-cta{
  display:inline-block;
  padding:10px 24px;
  border-radius:999px;
  background:var(--primary);
  color:#fff !important;
  font-weight:600;
  font-size:14px;
  border:2px solid transparent;
  transition:all .3s ease;
  white-space:nowrap;
}
.btn-nav-cta:hover{
  background:var(--primary-hover);
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(46,107,255,.35);
  color:#fff;
}
.btn-nav-cta:focus-visible,.btn-primary-custom:focus-visible,.btn-outline-custom:focus-visible,.btn-cta-white:focus-visible{
  outline:none;
  box-shadow:0 0 0 4px rgba(46,107,255,.2);
}
.navbar-toggler{
  border:none;
  background:var(--primary-light);
  border-radius:12px;
  padding:8px 12px;
  color:var(--primary);
  font-size:18px;
  line-height:1;
}
.navbar-toggler:focus{
  box-shadow:none;
  border:2px solid var(--primary);
}
@media (max-width:991.98px){
  .navbar-custom{
    left:16px;
    right:16px;
    top:12px;
    border-radius:20px;
  }
  .navbar-collapse{
    background:#fff;
    border-radius:16px;
    padding:16px;
    margin-top:12px;
    max-height:80vh;
    overflow-y:auto;
    border:1px solid var(--border);
    box-shadow:var(--shadow-card);
  }
  .navbar-custom .navbar-nav{gap:0;margin-top:4px}
  .navbar-custom .nav-link{padding:12px 16px !important;border-radius:12px}
  .nav-cta{margin-top:12px;margin-left:0}
  .btn-nav-cta{display:block;text-align:center;width:100%}
  .brand-main{font-size:15px}
}
@media (max-width:575.98px){
  .navbar-custom{padding:8px 16px}
  .brand-sub{display:none}
}

/* ===== 文章 Banner ===== */
.article-banner{
  padding:184px 0 56px;
  position:relative;
  background:
    linear-gradient(135deg,rgba(247,250,255,.96) 0%,rgba(255,255,255,.88) 55%,rgba(201,175,245,.18) 100%),
    url('/assets/images/backpic/back-3.webp') center 28% / cover no-repeat;
  border-bottom:1px solid var(--border);
}
.article-banner .container{position:relative;z-index:2}
.breadcrumb-nav{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  font-size:13px;
  color:var(--text-sub);
  margin-bottom:20px;
}
.breadcrumb-nav a{color:var(--primary);font-weight:500}
.breadcrumb-nav a:hover{color:var(--primary-hover);text-decoration:underline}
.breadcrumb-nav .separator{color:#A0AEC0}
.breadcrumb-nav .current{color:var(--text-main);font-weight:500;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-banner h1{
  font-size:32px;
  font-weight:700;
  color:var(--text-main);
  line-height:1.4;
  letter-spacing:-.5px;
  margin-bottom:16px;
  max-width:860px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  align-items:center;
  font-size:14px;
  color:var(--text-sub);
}
.badge-custom{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--primary-light);
  color:var(--primary);
  padding:5px 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
}
.badge-custom i{font-size:12px}

/* ===== 正文 ===== */
.article-section{padding:48px 0 64px}
.article-body{
  max-width:860px;
  margin:0 auto 40px;
  background:var(--card-bg);
  border-radius:var(--radius-card);
  padding:48px 56px;
  border:1px solid var(--border);
  box-shadow:var(--shadow-card);
  font-size:16px;
  color:var(--text-sub);
}
.article-body h2{
  font-size:22px;
  font-weight:700;
  color:var(--text-main);
  margin:32px 0 16px;
  letter-spacing:-.3px;
  line-height:1.5;
}
.article-body h2:first-child{margin-top:0}
.article-body h3{
  font-size:18px;
  font-weight:600;
  color:var(--text-main);
  margin:24px 0 12px;
  line-height:1.5;
}
.article-body p{font-size:16px;color:var(--text-sub);line-height:1.8;margin-bottom:16px}
.article-body ul,.article-body ol{margin:0 0 16px 22px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px;color:var(--text-sub);line-height:1.8}
.article-body blockquote{
  border-left:4px solid var(--primary);
  background:var(--primary-light);
  padding:16px 20px;
  border-radius:0 12px 12px 0;
  margin:24px 0;
  color:var(--text-main);
  font-size:15px;
}
.article-body img{border-radius:16px;margin:24px 0;width:100%;height:auto}
.article-body a{color:var(--primary);font-weight:500}
.article-body a:hover{text-decoration:underline}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
.article-body table th,.article-body table td{padding:12px 16px;border:1px solid var(--border);text-align:left}
.article-body table th{background:var(--primary-light);color:var(--text-main);font-weight:600}
.article-body table tr:nth-child(even){background:var(--bg-main)}
.article-body pre{
  background:var(--dark);
  color:#EDF2FF;
  padding:16px 20px;
  border-radius:12px;
  overflow-x:auto;
  margin:24px 0;
  font-size:14px;
  line-height:1.6;
}
.article-body code{
  background:var(--primary-light);
  color:var(--primary-hover);
  padding:2px 6px;
  border-radius:6px;
  font-size:14px;
}
.article-body pre code{background:none;color:inherit;padding:0;border-radius:0}
.not-found{
  background:var(--bg-main);
  border:2px dashed var(--border);
  border-radius:20px;
  padding:48px 24px;
  text-align:center;
  color:var(--text-sub);
  font-size:15px;
}
.not-found i{
  font-size:40px;
  color:var(--accent);
  display:block;
  margin-bottom:12px;
}
.not-found p{margin-bottom:16px;font-size:16px;color:var(--text-main);font-weight:500}
.article-buttons{
  max-width:860px;
  margin:0 auto;
  display:flex;
  justify-content:center;
  gap:16px;
  flex-wrap:wrap;
}
.btn-primary-custom{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 28px;
  border-radius:var(--radius-btn);
  background:var(--primary);
  color:#fff;
  font-weight:600;
  font-size:15px;
  border:2px solid transparent;
  transition:all .3s ease;
  min-height:44px;
}
.btn-primary-custom:hover{
  background:var(--primary-hover);
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(46,107,255,.35);
  color:#fff;
}
.btn-outline-custom{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 28px;
  border-radius:var(--radius-btn);
  background:transparent;
  color:var(--primary);
  font-weight:600;
  font-size:15px;
  border:2px solid var(--primary);
  transition:all .3s ease;
  min-height:44px;
}
.btn-outline-custom:hover{
  background:var(--primary-light);
  color:var(--primary-hover);
  border-color:var(--primary-hover);
}

/* ===== 相关推荐 ===== */
.related-section{padding:72px 0 80px}
.section-header{text-align:center;margin-bottom:40px}
.section-header h2{
  font-size:28px;
  font-weight:700;
  color:var(--text-main);
  letter-spacing:-.5px;
}
.section-header p{font-size:15px;color:var(--text-sub);margin-top:8px}
.related-card{
  background:var(--card-bg);
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--shadow-card);
  transition:all .3s ease;
  height:100%;
  display:flex;
  flex-direction:column;
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.related-card .card-thumb{
  height:180px;
  overflow:hidden;
  position:relative;
}
.related-card .card-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
  border-radius:0;
  margin:0;
}
.related-card:hover .card-thumb img{transform:scale(1.04)}
.related-card .card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.related-card .badge-custom{align-self:flex-start;margin-bottom:10px}
.related-card .card-title{
  font-size:17px;
  font-weight:600;
  color:var(--text-main);
  margin-bottom:8px;
  line-height:1.5;
  display:block;
}
.related-card .card-title:hover{color:var(--primary)}
.related-card .card-desc{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

/* ===== FAQ ===== */
.faq-section{padding:72px 0 80px;background:#fff;border-top:1px solid var(--border)}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-wrap .accordion{--bs-accordion-border-color:var(--border);--bs-accordion-bg:var(--bg-main);--bs-accordion-border-radius:16px}
.accordion-item{
  border:1px solid var(--border);
  border-radius:16px !important;
  margin-bottom:16px;
  background:var(--bg-main);
  overflow:hidden;
  transition:border-color .3s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:var(--primary)}
.accordion-button{
  background:var(--bg-main);
  color:var(--text-main);
  font-weight:600;
  font-size:16px;
  padding:20px 24px;
  box-shadow:none !important;
  border-radius:16px !important;
  transition:background .3s ease;
}
.accordion-button:not(.collapsed){
  background:var(--primary-light);
  color:var(--primary);
}
.accordion-button:focus{
  box-shadow:0 0 0 3px rgba(46,107,255,.15) !important;
  border-radius:16px;
}
.accordion-button::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%232E6BFF' class='bi bi-chevron-down' viewBox='0 0 16 16'%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");
  background-size:16px;
  transition:transform .3s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.accordion-body{
  background:var(--bg-main);
  padding:0 24px 24px;
  color:var(--text-sub);
  font-size:15px;
  line-height:1.8;
}

/* ===== CTA ===== */
.cta-banner{
  background:linear-gradient(135deg,var(--primary) 0%,#6DA1FF 100%);
  padding:72px 0;
  text-align:center;
  color:#fff;
}
.cta-banner h2{
  font-size:30px;
  font-weight:700;
  margin-bottom:16px;
  color:#fff;
  letter-spacing:-.5px;
}
.cta-banner p{
  font-size:16px;
  color:rgba(255,255,255,.92);
  max-width:640px;
  margin:0 auto 32px;
  line-height:1.8;
}
.btn-cta-white{
  display:inline-block;
  padding:14px 36px;
  border-radius:999px;
  background:#fff;
  color:var(--primary);
  font-weight:700;
  font-size:15px;
  transition:all .3s ease;
  border:2px solid transparent;
  min-height:44px;
  line-height:1.2;
}
.btn-cta-white:hover{
  background:rgba(255,255,255,.9);
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(0,0,0,.15);
  color:var(--primary-hover);
}

/* ===== 页脚 ===== */
.footer{
  background:var(--dark);
  color:rgba(255,255,255,.8);
  padding:80px 0 28px;
}
.footer-brand{
  font-size:20px;
  font-weight:700;
  color:#fff;
  margin-bottom:12px;
  letter-spacing:-.3px;
}
.footer-desc{
  font-size:14px;
  color:rgba(255,255,255,.6);
  max-width:320px;
  line-height:1.8;
  margin-bottom:16px;
}
.footer-title{
  font-size:15px;
  color:#fff;
  font-weight:600;
  margin-bottom:16px;
}
.footer-links li{margin-bottom:10px}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.65);
  transition:all .3s ease;
}
.footer-links a:hover{
  color:var(--accent);
  padding-left:4px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  margin-top:48px;
  padding-top:24px;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ===== 响应式 ===== */
@media (max-width:767.98px){
  .article-banner{padding:160px 0 40px}
  .article-banner h1{font-size:26px}
  .breadcrumb-nav .current{max-width:200px}
  .article-section{padding:32px 0 48px}
  .article-body{padding:28px 20px;border-radius:16px}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .article-buttons .btn-primary-custom,
  .article-buttons .btn-outline-custom{width:100%;justify-content:center}
  .related-section{padding:56px 0 64px}
  .faq-section{padding:56px 0 64px}
  .section-header h2{font-size:24px}
  .cta-banner{padding:56px 0}
  .cta-banner h2{font-size:24px}
  .cta-banner p{font-size:15px}
  .btn-cta-white{width:100%;text-align:center}
  .footer{padding:56px 0 24px}
  .footer-bottom{flex-direction:column;align-items:center;text-align:center}
  .footer-brand{font-size:18px}
}
@media (max-width:575.98px){
  .related-card .card-thumb{height:150px}
  .article-banner h1{font-size:23px;letter-spacing:-.3px}
  .article-meta{gap:10px;font-size:13px}
}

/* roulang page: category2 */
:root {
            --primary: #2E6BFF;
            --primary-hover: #1F52CC;
            --accent: #7C9FFF;
            --accent-2: #C9AFF5;
            --bg-light: #F7FAFF;
            --card-bg: #FFFFFF;
            --text-main: #14213D;
            --text-sub: #5B6B8C;
            --border-line: #E5ECF8;
            --dark-bg: #101B33;
            --radius-card: 20px;
            --radius-btn: 999px;
            --shadow-card: 0 4px 20px rgba(20, 33, 61, 0.06);
            --shadow-card-hover: 0 12px 32px rgba(20, 33, 61, 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: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }

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

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

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

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

        .container {
            max-width: 1200px;
        }

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

        .section-title-wrap .sub-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 2px;
            margin-bottom: 8px;
            display: block;
        }

        .section-title-wrap h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.5px;
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .section-title-wrap p {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== NAVBAR ===== */
        .navbar-custom {
            position: fixed;
            top: 16px;
            left: 24px;
            right: 24px;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-line);
            border-radius: 999px;
            padding: 10px 24px;
            box-shadow: 0 4px 20px rgba(20, 33, 61, 0.06);
            transition: var(--transition-base);
        }

        .navbar-custom .navbar-brand {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            margin-right: 20px;
        }

        .navbar-custom .brand-main {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.2px;
            white-space: nowrap;
        }

        .navbar-custom .brand-sub {
            font-size: 11px;
            color: var(--text-sub);
            font-weight: 400;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .navbar-custom .navbar-nav {
            gap: 4px;
        }

        .navbar-custom .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 16px;
            border-radius: 999px;
            transition: var(--transition-base);
        }

        .navbar-custom .nav-link:hover {
            color: var(--primary);
            background: rgba(46, 107, 255, 0.06);
        }

        .navbar-custom .nav-link.active {
            color: var(--primary);
            background: rgba(46, 107, 255, 0.1);
            font-weight: 600;
        }

        .navbar-custom .nav-cta {
            margin-left: 16px;
        }

        .navbar-custom .btn-nav-cta {
            display: inline-block;
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: 999px;
            border: 2px solid transparent;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .navbar-custom .btn-nav-cta:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(46, 107, 255, 0.3);
        }

        .navbar-custom .btn-nav-cta:focus-visible {
            border-color: rgba(255, 255, 255, 0.6);
            outline: none;
            box-shadow: 0 0 0 4px rgba(46, 107, 255, 0.25);
        }

        .navbar-custom .navbar-toggler {
            border: none;
            color: var(--text-main);
            font-size: 24px;
            padding: 6px 12px;
            border-radius: 999px;
            background: rgba(46, 107, 255, 0.06);
        }

        .navbar-custom .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.2);
        }

        @media (max-width: 991.98px) {
            .navbar-custom {
                border-radius: 24px;
                top: 12px;
                left: 16px;
                right: 16px;
                padding: 12px 20px;
            }

            .navbar-custom .navbar-collapse {
                background: #fff;
                border-radius: 20px;
                padding: 16px;
                margin-top: 12px;
                border: 1px solid var(--border-line);
                box-shadow: 0 12px 32px rgba(20, 33, 61, 0.1);
                max-height: 80vh;
                overflow-y: auto;
            }

            .navbar-custom .navbar-nav {
                gap: 0;
            }

            .navbar-custom .nav-link {
                padding: 12px 16px;
                border-radius: 12px;
            }

            .navbar-custom .nav-cta {
                margin-left: 0;
                margin-top: 12px;
            }

            .navbar-custom .btn-nav-cta {
                width: 100%;
                text-align: center;
                display: block;
            }
        }

        @media (max-width: 520px) {
            .navbar-custom .brand-main {
                font-size: 16px;
            }

            .navbar-custom .brand-sub {
                font-size: 10px;
            }
        }

        /* ===== CATEGORY HERO ===== */
        .category-hero {
            position: relative;
            padding: 180px 0 80px;
            background: linear-gradient(180deg, #EDF3FF 0%, #F7FAFF 100%);
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -60px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            border: 2px solid rgba(46, 107, 255, 0.08);
            z-index: 0;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            bottom: 20px;
            left: 10%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(201, 175, 245, 0.08);
            z-index: 0;
        }

        .category-hero .hero-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 48px;
        }

        .category-hero .hero-text {
            flex: 1;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(46, 107, 255, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.5px;
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .category-hero h1 span {
            color: var(--primary);
        }

        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--text-sub);
            line-height: 1.9;
            max-width: 540px;
            margin-bottom: 28px;
        }

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

        .category-hero .btn-primary-custom {
            display: inline-block;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: 999px;
            border: 2px solid transparent;
            transition: var(--transition-base);
        }

        .category-hero .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(46, 107, 255, 0.3);
        }

        .category-hero .btn-outline-custom {
            display: inline-block;
            padding: 12px 32px;
            background: transparent;
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            border-radius: 999px;
            border: 2px solid var(--primary);
            transition: var(--transition-base);
        }

        .category-hero .btn-outline-custom:hover {
            background: rgba(46, 107, 255, 0.08);
            color: var(--primary-hover);
            transform: translateY(-2px);
        }

        .category-hero .hero-illustration {
            flex: 0 0 400px;
            height: 280px;
            border-radius: 24px;
            background: linear-gradient(135deg, rgba(46, 107, 255, 0.1), rgba(201, 175, 245, 0.12));
            padding: 16px;
            position: relative;
            overflow: hidden;
        }

        .category-hero .hero-illustration img {
            width: 100%;
            height: 100%;
            border-radius: 16px;
            object-fit: cover;
        }

        .hero-trust-row {
            display: flex;
            gap: 24px;
            margin-top: 36px;
            flex-wrap: wrap;
        }

        .hero-trust-row .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
        }

        .hero-trust-row .trust-item i {
            color: var(--primary);
            font-size: 18px;
        }

        @media (max-width: 991.98px) {
            .category-hero {
                padding: 140px 0 60px;
            }

            .category-hero .hero-illustration {
                flex: 0 0 100%;
                height: 240px;
                margin-top: 20px;
            }
        }

        @media (max-width: 767.98px) {
            .category-hero h1 {
                font-size: 28px;
            }

            .category-hero .hero-actions .btn-primary-custom,
            .category-hero .hero-actions .btn-outline-custom {
                width: 100%;
                text-align: center;
            }
        }

        /* ===== SERVICE CARDS ===== */
        .service-section {
            padding: 80px 0;
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-line);
            box-shadow: var(--shadow-card);
            padding: 32px 28px;
            transition: var(--transition-base);
            height: 100%;
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(46, 107, 255, 0.25);
        }

        .service-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(46, 107, 255, 0.08);
            margin-bottom: 20px;
            transition: var(--transition-base);
        }

        .service-card:hover .icon-wrap {
            background: rgba(46, 107, 255, 0.18);
        }

        .service-card .icon-wrap i {
            font-size: 24px;
            color: var(--primary);
        }

        .service-card .card-tag {
            display: inline-block;
            background: rgba(46, 107, 255, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .service-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .service-card .card-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .service-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition-base);
        }

        .service-card .card-link:hover {
            color: var(--primary-hover);
            gap: 8px;
        }

        @media (max-width: 991.98px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .service-grid {
                grid-template-columns: 1fr;
            }

            .service-section {
                padding: 56px 0;
            }
        }

        /* ===== STATS / ADVANTAGE ===== */
        .stats-section {
            padding: 80px 0;
            background: #fff;
            border-top: 1px solid var(--border-line);
            border-bottom: 1px solid var(--border-line);
        }

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

        .stat-card {
            background: var(--bg-light);
            border-radius: 12px;
            border: 1px solid var(--border-line);
            padding: 36px 24px;
            text-align: center;
            position: relative;
        }

        .stat-card::before {
            content: "";
            display: block;
            width: 32px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0 auto 16px;
        }

        .stat-card .stat-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-sub);
            font-weight: 500;
        }

        @media (max-width: 991.98px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .stats-section {
                padding: 56px 0;
            }
        }

        /* ===== PROCESS ===== */
        .process-section {
            padding: 80px 0;
            background: var(--bg-light);
        }

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

        .process-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border-line);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }

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

        .process-card .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }

        .process-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .process-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        @media (max-width: 991.98px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .process-grid {
                grid-template-columns: 1fr;
            }

            .process-section {
                padding: 56px 0;
            }
        }

        /* ===== SOLUTION FEATURE ===== */
        .solution-section {
            padding: 80px 0;
            background: #fff;
        }

        .solution-wrapper {
            display: flex;
            align-items: center;
            gap: 56px;
        }

        .solution-text {
            flex: 1;
        }

        .solution-text .sub-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 2px;
            display: block;
            margin-bottom: 8px;
        }

        .solution-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.5px;
            line-height: 1.4;
            margin-bottom: 20px;
        }

        .solution-text .solution-list {
            list-style: none;
            margin: 0 0 28px;
            padding: 0;
        }

        .solution-text .solution-list li {
            position: relative;
            padding-left: 24px;
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .solution-text .solution-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 12px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
        }

        .solution-text .btn-primary-custom {
            display: inline-block;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: 999px;
            border: 2px solid transparent;
            transition: var(--transition-base);
        }

        .solution-text .btn-primary-custom:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(46, 107, 255, 0.3);
        }

        .solution-image {
            flex: 0 0 440px;
        }

        .solution-image img {
            width: 100%;
            height: 360px;
            border-radius: 20px;
            object-fit: cover;
            box-shadow: var(--shadow-card-hover);
        }

        @media (max-width: 991.98px) {
            .solution-wrapper {
                flex-direction: column-reverse;
                gap: 32px;
            }

            .solution-image {
                flex: 0 0 100%;
            }

            .solution-image img {
                height: 280px;
            }
        }

        @media (max-width: 575.98px) {
            .solution-section {
                padding: 56px 0;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-light);
        }

        .faq-accordion {
            max-width: 880px;
            margin: 0 auto;
            background: var(--bg-light);
            border-radius: 24px;
            padding: 32px;
        }

        .faq-accordion .accordion-item {
            background: #fff;
            border: 1px solid var(--border-line);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-accordion .accordion-item:last-child {
            margin-bottom: 0;
        }

        .faq-accordion .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: #fff;
            padding: 20px 24px;
            border: none;
            box-shadow: none;
            transition: var(--transition-base);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(46, 107, 255, 0.03);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.15);
            border-color: transparent;
        }

        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232E6BFF'%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;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .faq-accordion .accordion-body {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.9;
            padding: 0 24px 20px;
        }

        @media (max-width: 575.98px) {
            .faq-section {
                padding: 56px 0;
            }

            .faq-accordion {
                padding: 16px;
            }
        }

        /* ===== CTA BANNER ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #2E6BFF 0%, #6DA1FF 100%);
        }

        .cta-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.92);
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .cta-inner .btn-cta-white {
            display: inline-block;
            padding: 14px 40px;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            border-radius: 999px;
            border: 2px solid transparent;
            transition: var(--transition-base);
        }

        .cta-inner .btn-cta-white:hover {
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(16, 27, 51, 0.2);
        }

        @media (max-width: 575.98px) {
            .cta-section {
                padding: 56px 0;
            }

            .cta-inner .btn-cta-white {
                width: 100%;
            }
        }

        /* ===== FOOTER ===== */
        .footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 24px;
        }

        .footer .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-bottom: 16px;
            max-width: 320px;
        }

        .footer .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

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

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

        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        @media (max-width: 575.98px) {
            .footer {
                padding: 48px 0 20px;
            }

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

        /* ===== SECTION PADDING ===== */
        .py-section {
            padding: 80px 0;
        }

        @media (max-width: 767.98px) {
            .py-section {
                padding: 56px 0;
            }
        }

        /* ===== CARD IMAGE ===== */
        .card-image-wrap {
            height: 180px;
            background: linear-gradient(135deg, #EDF3FF, #E9E4FF);
            border-radius: 16px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .card-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

/* roulang page: category3 */
:root {
            --primary: #2E6BFF;
            --primary-hover: #1F52CC;
            --accent: #7C9FFF;
            --accent2: #C9AFF5;
            --bg: #F7FAFF;
            --card-bg: #FFFFFF;
            --text: #14213D;
            --text-secondary: #5B6B8C;
            --border: #E5ECF8;
            --dark: #101B33;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 4px 20px rgba(20, 33, 61, 0.06);
            --shadow-hover: 0 12px 32px rgba(20, 33, 61, 0.12);
            --transition: 0.3s ease;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 15px;
            line-height: 1.8;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
        }
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            transition: all .3s ease;
            min-height: 44px;
        }
        .btn-main:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(46, 107, 255, 0.3);
        }
        .btn-main:focus-visible,
        .btn-outline:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 27px;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            transition: all .3s ease;
            min-height: 44px;
        }
        .btn-outline:hover {
            background: rgba(46, 107, 255, 0.08);
            color: var(--primary-hover);
            border-color: var(--primary-hover);
        }
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(46, 107, 255, 0.08);
            padding: 4px 12px;
            border-radius: 6px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== 导航 ===== */
        .navbar-custom {
            position: fixed;
            top: 16px;
            left: 24px;
            right: 24px;
            z-index: 1040;
            background: rgba(255, 255, 255, 0.85);
            -webkit-backdrop-filter: blur(20px);
            backdrop-filter: blur(20px);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 0 24px;
            box-shadow: 0 4px 20px rgba(20, 33, 61, 0.06);
            transition: box-shadow .3s ease;
        }
        .navbar-custom.scrolled {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        .navbar-brand {
            display: flex;
            flex-direction: column;
            padding: 12px 0;
            margin-right: 24px;
        }
        .brand-main {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: -0.2px;
            white-space: nowrap;
        }
        .brand-sub {
            font-size: 11px;
            color: var(--text-secondary);
            letter-spacing: 0.4px;
            white-space: nowrap;
        }
        .navbar-custom .navbar-nav {
            gap: 2px;
        }
        .navbar-custom .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 8px 16px !important;
            border-radius: 999px;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .navbar-custom .nav-link:hover {
            color: var(--primary);
            background: rgba(46, 107, 255, 0.06);
        }
        .navbar-custom .nav-link.active {
            color: var(--primary);
            background: rgba(46, 107, 255, 0.1);
            font-weight: 600;
        }
        .nav-cta {
            margin-left: 16px;
        }
        .btn-nav-cta {
            display: inline-block;
            padding: 10px 22px;
            background: var(--primary);
            color: #fff !important;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(46, 107, 255, 0.25);
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 14px;
            color: var(--text);
            font-size: 20px;
            background: rgba(255, 255, 255, 0.7);
        }
        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--primary);
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            padding: 140px 0 64px;
            background: linear-gradient(180deg, #EDF3FF 0%, #F7FAFF 100%);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.07;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-breadcrumb {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .hero-breadcrumb a {
            color: var(--text-secondary);
        }
        .hero-breadcrumb a:hover {
            color: var(--primary);
        }
        .hero-breadcrumb .sep {
            color: #B4C1D9;
        }
        .hero-title {
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .hero-sub {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 480px;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-panel {
            background: var(--dark);
            border-radius: 20px;
            padding: 28px 24px;
            color: #fff;
            box-shadow: 0 20px 40px rgba(16, 27, 51, 0.25);
            max-width: 420px;
            margin-left: auto;
        }
        .panel-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .panel-title i {
            color: #6DA1FF;
        }
        .panel-list {
            margin-top: 12px;
        }
        .panel-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
            color: rgba(255, 255, 255, 0.9);
        }
        .panel-item:last-child {
            border-bottom: none;
        }
        .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #2EE6A8;
            flex-shrink: 0;
            box-shadow: 0 0 0 4px rgba(46, 230, 168, 0.12);
        }
        .badge-panel {
            margin-left: auto;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            background: rgba(255, 255, 255, 0.08);
            padding: 3px 8px;
            border-radius: 6px;
            flex-shrink: 0;
        }

        /* ===== 服务概览卡片 ===== */
        .feat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            height: 100%;
        }
        .feat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feat-icon {
            width: 56px;
            height: 56px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            background: rgba(46, 107, 255, 0.1);
            margin-bottom: 20px;
            transition: all var(--transition);
        }
        .feat-card:hover .feat-icon {
            background: rgba(46, 107, 255, 0.2);
        }
        .feat-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }
        .feat-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.75;
        }

        /* ===== 资讯方向卡片 ===== */
        .dir-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            height: 100%;
        }
        .dir-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .dir-card .cover {
            height: 180px;
            object-fit: cover;
            width: 100%;
            display: block;
        }
        .dir-card .body {
            padding: 20px 24px 24px;
        }
        .badge-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(46, 107, 255, 0.08);
            padding: 4px 10px;
            border-radius: 6px;
            margin-bottom: 12px;
            letter-spacing: 0.2px;
        }
        .dir-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }
        .dir-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.75;
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .text-link i {
            transition: transform .25s ease;
            font-size: 13px;
        }
        .text-link:hover {
            color: var(--primary-hover);
        }
        .text-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 数据面板 ===== */
        .stats-panel {
            background: var(--dark);
            border-radius: 24px;
            padding: 56px 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .stats-panel::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(46, 107, 255, 0.2);
            filter: blur(80px);
            pointer-events: none;
        }
        .stats-panel .section-title {
            color: #fff;
        }
        .stats-panel .section-sub {
            color: rgba(255, 255, 255, 0.6);
        }
        .stat-item {
            text-align: center;
            padding: 16px 8px;
        }
        .stat-number {
            font-size: 42px;
            font-weight: 700;
            color: #6DA1FF;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ===== 适用人群 ===== */
        .audience-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            height: 100%;
        }
        .audience-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .audience-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent2);
            background: rgba(201, 175, 245, 0.15);
            margin-bottom: 16px;
            border: 1px solid rgba(201, 175, 245, 0.25);
        }
        .audience-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }
        .audience-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.75;
        }

        /* ===== 流程 ===== */
        .process-card {
            text-align: center;
            padding: 32px 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            height: 100%;
        }
        .process-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .process-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            margin: 0 auto 16px;
            box-shadow: 0 8px 20px rgba(46, 107, 255, 0.25);
        }
        .process-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .process-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            background: #fff;
            border-radius: 24px;
            padding: 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .25s ease;
        }
        .faq-item:last-child {
            margin-bottom: 0;
        }
        .faq-item.active {
            border-color: var(--primary);
        }
        .faq-btn {
            width: 100%;
            padding: 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: none;
            border: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            text-align: left;
            gap: 12px;
            transition: color .25s ease;
        }
        .faq-btn:hover {
            color: var(--primary);
        }
        .faq-btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            border-radius: 12px;
        }
        .faq-btn i {
            transition: transform .3s ease;
            font-size: 14px;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .faq-item.active .faq-btn i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-body {
            padding: 0 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid transparent;
        }
        .faq-item.active .faq-body {
            border-top-color: var(--border);
            padding: 16px 20px 20px;
        }
        .faq-body-inner {
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta-banner {
            background: linear-gradient(135deg, #2E6BFF 0%, #6DA1FF 100%);
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            top: -40px;
            left: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            pointer-events: none;
        }
        .cta-banner h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .cta-banner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 24px;
        }
        .cta-banner .btn {
            background: #fff;
            color: var(--primary);
            padding: 14px 32px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            border: none;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all .3s ease;
        }
        .cta-banner .btn:hover {
            background: #f0f4ff;
            color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
        }
        .cta-banner .btn:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.6);
            padding: 64px 0 32px;
            margin-top: 80px;
        }
        .footer-brand {
            font-size: 20px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.2px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 16px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-title {
            font-size: 15px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            text-decoration: none;
            transition: color .25s ease;
        }
        .footer-links a:hover {
            color: #A8C2FF;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 48px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .navbar-custom {
                left: 12px;
                right: 12px;
                border-radius: 20px;
                padding: 4px 16px;
                top: 12px;
            }
            .navbar-collapse {
                background: rgba(255, 255, 255, 0.98);
                border-radius: 16px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: 0 12px 32px rgba(20, 33, 61, 0.1);
                max-height: 80vh;
                overflow-y: auto;
                border: 1px solid var(--border);
            }
            .navbar-custom .nav-link {
                padding: 12px 16px !important;
                border-radius: 10px;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
            }
            .btn-nav-cta {
                width: 100%;
                text-align: center;
            }
            .hero-panel {
                margin-left: 0;
                margin-top: 32px;
                max-width: 100%;
            }
        }
        @media (max-width: 767.98px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-main,
            .hero-actions .btn-outline {
                width: 100%;
            }
            .stats-panel {
                padding: 40px 24px;
            }
            .stat-number {
                font-size: 34px;
            }
            .cta-banner {
                padding: 40px 24px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
            .faq-wrap {
                padding: 20px;
            }
            .footer {
                padding: 48px 0 24px;
                margin-top: 56px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .brand-main {
                font-size: 16px;
            }
            .brand-sub {
                font-size: 10px;
            }
            .page-hero {
                padding: 110px 0 48px;
            }
        }