/* roulang page: index */
:root {
  --brand: #2C6FD1;
  --brand-deep: #1B4E9E;
  --brand-light: #EAF1FA;
  --safe: #148A60;
  --safe-light: #E4F3ED;
  --amber: #C07814;
  --bg-page: #F7F9FB;
  --bg-card: #FFFFFF;
  --text: #1F2A3C;
  --text-secondary: #4A5B70;
  --text-muted: #8B99AC;
  --line: #DEE6EF;
  --line-soft: #E4EAF2;
  --focus: #7AB0F0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 24px rgba(31, 61, 99, 0.06);
  --shadow-card-hover: 0 18px 32px rgba(31, 61, 99, 0.10);
  --shadow-btn: 0 8px 16px rgba(44, 111, 209, 0.16);
  --font-stack: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text);
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

img {
  max-width: 100%;
}

section {
  position: relative;
}

.container {
  max-width: 1200px;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  color: #17233B;
  margin-top: 0;
  margin-bottom: 0.5em;
  font-weight: 600;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

.btn {
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.btn:focus,
.btn:focus-visible,
.form-control:focus {
  outline: none;
  box-shadow: 0 0 0 0.25rem rgba(122, 176, 240, 0.25);
}

.btn-primary {
  --bs-btn-bg: var(--brand);
  --bs-btn-border-color: var(--brand);
  --bs-btn-hover-bg: var(--brand-deep);
  --bs-btn-hover-border-color: var(--brand-deep);
  --bs-btn-active-bg: #16437E;
  --bs-btn-active-border-color: #16437E;
}

.btn-outline-primary {
  --bs-btn-color: var(--brand);
  --bs-btn-border-color: var(--brand);
  --bs-btn-hover-bg: var(--brand);
}

.btn-ghost-secondary {
  background: var(--brand-light);
  border: 1px solid #C9DCF3;
  color: var(--brand-deep);
  padding: 12px 26px;
}

.btn-ghost-secondary:hover {
  background: #DCE8F8;
  border-color: #A9C6E8;
  color: var(--brand-deep);
}

.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 22px;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid var(--brand);
  min-width: 112px;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  box-shadow: var(--shadow-btn);
}

.btn-nav-cta:hover,
.btn-nav-cta:focus {
  background: var(--brand-deep);
  color: #fff;
  transform: translateY(-2px);
}

.section-padding {
  padding: 96px 0;
}

.section-bg-white {
  background: #fff;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.section-eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--brand);
  display: inline-block;
  vertical-align: middle;
  border-radius: 2px;
}

.section-title {
  font-size: clamp(28px, 2.4vw, 36px);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-lead {
  color: var(--text-secondary);
  font-size: 17px;
  max-width: 780px;
}

/**** Topbar ****/
.topbar {
  background: var(--brand-light);
  min-height: 36px;
  font-size: 13px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--line-soft);
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 36px;
}

.topbar a {
  color: var(--brand-deep);
  font-weight: 500;
}

/**** Header / Nav ****/
.site-header {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line-soft);
  position: sticky;
  top: 0;
  z-index: 1030;
  backdrop-filter: blur(10px);
}

.navbar {
  padding: 12px 0;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 19px;
  color: var(--text);
  letter-spacing: -0.01em;
}

.navbar-brand:hover {
  color: var(--text);
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand);
  border-radius: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 17px;
  box-shadow: 0 6px 14px rgba(44, 111, 209, 0.2);
}

.navbar .nav-link {
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 500;
  padding: 10px 18px !important;
  transition: color .2s ease, background .2s ease;
  border-radius: 8px;
}

.navbar .nav-link:hover {
  color: var(--brand-deep);
  background: var(--brand-light);
}

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

.navbar-toggler {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(44, 111, 209, 0.15);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(31,42,60,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/**** Hero ****/
.hero-section {
  background-image: linear-gradient(90deg, rgba(255, 255, 255, 0.97) 0%, rgba(247, 250, 255, 0.85) 42%, rgba(239, 246, 255, 0.30) 100%), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center right;
  min-height: 650px;
  display: flex;
  align-items: center;
  padding: 110px 0 90px;
}

.hero-content {
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--brand-deep);
  background: rgba(234, 241, 250, 0.9);
  border: 1px solid #D3E4F5;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(36px, 4vw, 52px);
  line-height: 1.2;
  font-weight: 700;
  color: #17233B;
  margin-bottom: 18px;
  letter-spacing: -0.03em;
}

.hero-lead {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.85;
  max-width: 620px;
  margin-bottom: 32px;
}

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

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 52px;
  padding: 0 28px;
  background: var(--brand);
  border: 1px solid var(--brand);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 10px;
  box-shadow: var(--shadow-btn);
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
}

.btn-hero-primary:hover {
  background: var(--brand-deep);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 20px rgba(44, 111, 209, 0.2);
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 28px;
  background: #fff;
  border: 1px solid #CFDCEC;
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  border-radius: 10px;
  transition: border-color .2s ease, background .2s ease;
}

.btn-hero-secondary:hover {
  background: var(--brand-light);
  border-color: var(--brand);
  color: var(--brand-deep);
}

.hero-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--text-muted);
}

/**** Info Strip ****/
.info-strip {
  background: #fff;
  border-bottom: 1px solid var(--line-soft);
}

.info-strip .container {
  padding-top: 24px;
  padding-bottom: 24px;
}

.info-strip-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.info-cell {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 8px;
}

.info-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--brand-light);
  color: var(--brand-deep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 600;
  flex-shrink: 0;
}

.info-cell strong {
  display: block;
  font-size: 16px;
  color: var(--text);
  margin-bottom: 2px;
}

.info-cell span {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/**** Intro split section ****/
.split-intro-section {
  padding: 96px 0;
}

.split-image-wrap {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

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

.split-content {
  padding-left: 20px;
}

.split-points {
  margin-top: 22px;
}

.split-point {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.split-point:last-child {
  border-bottom: none;
}

.split-num {
  flex: 0 0 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--brand-light);
  color: var(--brand-deep);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.split-point h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.split-point p {
  margin-bottom: 0;
  color: var(--text-secondary);
  font-size: 15px;
}

/**** Step section ****/
.step-section {
  background: #fff;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding: 88px 0;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.step-card {
  position: relative;
  padding: 28px 24px;
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
  transition: transform .2s ease, box-shadow .2s ease;
}

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

.step-no {
  width: 28px;
  height: 28px;
  background: var(--safe);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.step-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 0;
}

/**** Category cards ****/
.cards-section {
  padding: 96px 0;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.content-card {
  display: block;
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
}

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

.content-cover {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  position: relative;
  background: var(--brand-light);
}

.content-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .35s ease;
}

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

.cover-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(23, 35, 59, 0.72);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.card-content {
  padding: 18px 18px 20px;
}

.card-content h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--text);
}

.card-content p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 14px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-link {
  color: var(--brand);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color .2s ease;
}

.card-link:hover {
  color: var(--brand-deep);
}

/**** News section ****/
.news-section {
  padding: 96px 0;
  background: #fff;
}

.news-section .section-heading {
  margin-bottom: 32px;
}

.news-list {
  border-top: 1px solid var(--line);
  margin-top: 28px;
}

.news-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  background: #fff;
  transition: background .2s ease, padding-left .2s ease;
}

.news-item:hover {
  background: #FAFCFF;
}

.news-tag {
  font-size: 13px;
  color: var(--brand-deep);
  background: var(--brand-light);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 500;
  line-height: 1.5;
  width: max-content;
}

.news-item-title {
  font-size: 17px;
  margin-bottom: 6px;
  font-weight: 600;
}

.news-item-title a {
  color: var(--text);
  transition: color .2s;
}

.news-item-title a:hover {
  color: var(--brand);
}

.news-summary {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 0;
  max-width: 820px;
}

.news-date {
  font-size: 14px;
  color: var(--text-muted);
  white-space: nowrap;
  padding-top: 6px;
}

.news-empty {
  border: 1px dashed #C4D6EB;
  background: var(--brand-light);
  border-radius: 18px;
  text-align: center;
  padding: 60px 24px;
}

.news-empty-icon {
  font-size: 38px;
  color: #AFC8E8;
  line-height: 1;
  margin-bottom: 12px;
}

.news-empty p {
  font-size: 16px;
  color: var(--text-secondary);
}

.news-empty a {
  font-weight: 600;
}

/**** Service guarantee ****/
.guarantee-section {
  padding: 88px 0;
  background: var(--bg-page);
}

.guarantee-band {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--shadow-card);
}

.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.guarantee-item {
  padding: 16px 12px;
}

.guarantee-item .guarantee-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--safe);
  display: inline-block;
  margin-right: 8px;
}

.guarantee-item h3 {
  font-size: 17px;
  padding-left: 19px;
  position: relative;
  color: var(--text);
}

.guarantee-item h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--safe);
}

.guarantee-item p {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 10px 0 0;
}

/**** FAQ ****/
.faq-section {
  padding: 96px 0;
  background: #fff;
}

.faq-wrap {
  max-width: 860px;
  margin: 28px auto 0;
}

.faq-wrap .accordion-item {
  background: #fff;
  border: 0;
  border-bottom: 1px solid var(--line-soft);
  border-radius: 0;
}

.faq-wrap .accordion-button {
  background: #fff;
  box-shadow: none;
  border: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  padding: 22px 18px;
  border-radius: 0 !important;
}

.faq-wrap .accordion-button:not(.collapsed) {
  color: var(--brand-deep);
  background: transparent;
}

.faq-wrap .accordion-button:focus {
  box-shadow: none;
  border: 0;
}

.faq-wrap .accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232C6FD1'%3e%3cpath fill-rule='evenodd' d='M8 2a.75.75 0 0 1 .75.75v4.5h4.5a.75.75 0 0 1 0 1.5h-4.5v4.5a.75.75 0 0 1-1.5 0v-4.5h-4.5a.75.75 0 0 1 0-1.5h4.5v-4.5A.75.75 0 0 1 8 2Z'/%3e%3c/svg%3e");
}

.faq-wrap .accordion-button:not(.collapsed)::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232C6FD1'%3e%3cpath fill-rule='evenodd' d='M4 8a.75.75 0 0 1 .75-.75h6.5a.75.75 0 0 1 0 1.5h-6.5A.75.75 0 0 1 4 8Z'/%3e%3c/svg%3e");
}

.faq-wrap .accordion-body {
  padding: 0 18px 22px;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
}

/**** Final CTA ****/
.cta-section {
  padding: 90px 0;
}

.cta-panel {
  background: var(--brand-light);
  border: 1px solid #CFE0F3;
  border-radius: 26px;
  padding: 44px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.cta-panel::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -90px;
  width: 220px;
  height: 220px;
  background: rgba(255, 255, 255, 0.35);
  border-radius: 50%;
}

.cta-panel h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-panel p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 0;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

/**** Footer ****/
.site-footer {
  background: #EDF2F8;
  border-top: 1px solid var(--line-soft);
  padding: 56px 0 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--text);
  margin-bottom: 14px;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 360px;
}

.footer-heading {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color .2s ease, padding-left .2s ease;
}

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

.footer-contact p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 6px;
}

.footer-contact-icon {
  color: var(--brand);
  margin-right: 4px;
}

.footer-bottom {
  border-top: 1px solid #D8E2EE;
  margin-top: 40px;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

/**** Reponsive ****/
@media (max-width: 1199.98px) {
  .hero-section {
    min-height: 600px;
  }

  .cards-grid {
    gap: 18px;
  }
}

@media (max-width: 991.98px) {
  .section-padding,
  .split-intro-section,
  .cards-section,
  .news-section,
  .faq-section,
  .cta-section {
    padding: 72px 0;
  }

  .navbar-collapse {
    padding-bottom: 16px;
  }

  .navbar .nav-link {
    padding: 12px 10px !important;
  }

  .hero-section {
    min-height: auto;
    padding: 80px 0 70px;
  }

  .info-strip-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

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

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

  .guarantee-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .cta-actions {
    justify-content: flex-start;
    margin-top: 28px;
  }
}

@media (max-width: 767.98px) {
  .hero-title {
    font-size: 34px;
  }

  .hero-lead {
    font-size: 16px;
  }

  .split-content {
    padding: 28px 0 0;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 18px 0;
  }

  .news-date {
    padding-top: 0;
  }

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

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

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

  .cta-panel {
    padding: 28px;
  }
}

@media (max-width: 575.98px) {
  .section-padding,
  .split-intro-section,
  .cards-section,
  .news-section,
  .faq-section,
  .cta-section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 28px;
  }

  .info-strip-grid {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .hero-section {
    padding: 60px 0 56px;
  }

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

  .navbar-brand {
    font-size: 16px;
    gap: 7px;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
    font-size: 15px;
  }

  .navbar {
    --bs-navbar-padding-y: 8px;
  }

  .btn-nav-cta {
    min-width: 60px;
    padding: 0 16px;
    height: 42px;
  }

  .guarantee-band {
    padding: 24px;
  }
}

/* roulang page: article */
:root {
  --brand: #2C6FD1;
  --brand-dark: #1B4E9E;
  --brand-light: #EAF1FA;
  --safe: #148A60;
  --safe-light: #E4F3ED;
  --warn: #C07814;
  --page-bg: #F7F9FB;
  --card-bg: #FFFFFF;
  --text-main: #1F2A3C;
  --text-muted: #4A5B70;
  --text-weak: #8B99AC;
  --line: #DEE6EF;
  --focus-ring: #7AB0F0;
  --radius-card: 16px;
  --radius-btn: 8px;
  --radius-img: 12px;
  --radius-badge: 999px;
  --shadow-card: 0 10px 24px rgba(31, 61, 99, 0.06);
  --shadow-hover: 0 18px 32px rgba(31, 61, 99, 0.10);
  --shadow-btn: 0 8px 16px rgba(44, 111, 209, 0.16);
  --font-sans: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--page-bg);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--brand);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover {
  color: var(--brand-dark);
}
img {
  max-width: 100%;
  height: auto;
  display: inline-block;
}
ul, ol {
  padding-left: 0;
}
button, input, textarea {
  font-family: inherit;
}
.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 26px;
  background: var(--brand);
  color: #fff !important;
  border: 1px solid var(--brand);
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  box-shadow: var(--shadow-btn);
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  white-space: nowrap;
}
.btn-nav-cta:hover {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 14px 22px rgba(27, 78, 158, .18);
}
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  background: var(--brand);
  color: #fff !important;
  border: 1px solid var(--brand);
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 15px;
  box-shadow: var(--shadow-btn);
  transition: background .2s, transform .2s, box-shadow .2s;
}
.btn-primary-custom:hover {
  background: var(--brand-dark);
  transform: translateY(-2px);
  box-shadow: 0 14px 24px rgba(27, 78, 158, .18);
}
.btn-secondary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  background: var(--brand-light);
  color: var(--brand-dark) !important;
  border: 1px solid #D3E2F5;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 15px;
  transition: background .2s, border-color .2s, transform .2s;
}
.btn-secondary-custom:hover {
  background: #DCE9FA;
  border-color: #B8D1F0;
  transform: translateY(-2px);
}

/* Header */
.site-header {
  background: #FFFFFF;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 1040;
  box-shadow: 0 4px 20px rgba(31, 61, 99, 0.04);
}
.site-header .navbar {
  padding: 0;
  min-height: 76px;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
}
.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 12px 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: .5px;
  white-space: nowrap;
}
.navbar-brand:hover {
  color: var(--text-main);
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--brand-light);
  color: var(--brand);
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}
.navbar-nav {
  gap: 4px;
}
.navbar-nav .nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px !important;
  font-size: 16px;
  color: var(--text-muted);
  border-radius: 8px;
  font-weight: 500;
  transition: background .2s ease, color .2s ease;
}
.navbar-nav .nav-link:hover {
  color: var(--brand-dark);
  background: var(--brand-light);
}
.navbar-nav .nav-link.active,
.navbar-nav .nav-link[aria-current="page"] {
  color: var(--brand);
  background: var(--brand-light);
  font-weight: 600;
}
.navbar-toggler {
  border: 1px solid #D9E2EE;
  border-radius: 8px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(44, 111, 209, .18);
  outline: none;
}
.navbar-toggler-icon {
  width: 22px;
  height: 18px;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%232C6FD1' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Main layout */
.page-main {
  min-height: calc(100vh - 180px);
}
.container-article {
  max-width: 1080px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.article-column {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
}

/* Breadcrumb */
.article-breadcrumb-wrap {
  padding: 22px 0 0;
}
.breadcrumb-custom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
  margin: 0;
  padding: 0;
  list-style: none;
}
.breadcrumb-custom li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb-custom li + li::before {
  content: "/";
  color: #C6D0DD;
  font-size: 13px;
}
.breadcrumb-custom a {
  color: var(--text-muted);
}
.breadcrumb-custom a:hover {
  color: var(--brand);
}
.breadcrumb-custom .current {
  color: var(--text-main);
  font-weight: 500;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Article Head */
.article-head {
  padding: 40px 0 30px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: var(--radius-badge);
  font-size: 13px;
  font-weight: 600;
}
.tag-blue {
  background: var(--brand-light);
  color: var(--brand-dark);
}
.tag-green {
  background: var(--safe-light);
  color: var(--safe);
}
.article-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-weak);
}
.article-head h1 {
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: .4px;
  margin: 0 0 20px;
  color: var(--text-main);
}
.article-abstract {
  background: var(--brand-light);
  border-left: 4px solid var(--brand);
  padding: 16px 22px;
  border-radius: 0 12px 12px 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Article card / body */
.article-card {
  background: var(--card-bg);
  border: 1px solid #E4EAF2;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 52px 56px 40px;
  margin-bottom: 36px;
}
.article-content {
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--text-main);
}
.article-content p {
  margin-bottom: 24px;
  max-width: 75ch;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 48px 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  color: var(--text-main);
}
.article-content h3 {
  font-size: 21px;
  font-weight: 700;
  margin: 34px 0 14px;
  color: var(--text-main);
}
.article-content h4 {
  font-size: 18px;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--text-main);
}
.article-content ul,
.article-content ol {
  margin: 0 0 24px 4px;
  padding-left: 22px;
}
.article-content li {
  margin-bottom: 10px;
  max-width: 72ch;
}
.article-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content blockquote {
  background: #F3F6FA;
  border-left: 4px solid var(--brand);
  border-radius: 0 12px 12px 0;
  padding: 18px 24px;
  margin: 0 0 24px;
  color: var(--text-muted);
}
.article-content pre {
  background: #1F2937;
  color: #F3F6FA;
  padding: 20px 24px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 24px;
}
.article-content code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: .92em;
}
.article-content p > code,
.article-content li > code {
  background: #EDF1F7;
  border-radius: 6px;
  padding: 2px 6px;
  color: var(--brand-dark);
}
.article-content img {
  border-radius: var(--radius-img);
  margin: 28px 0 12px;
  box-shadow: 0 8px 20px rgba(31, 61, 99, .08);
}
.article-content figcaption,
.article-content .wp-caption-text,
.article-content img + em {
  display: block;
  font-size: 13px;
  color: var(--text-weak);
  text-align: center;
  margin-bottom: 24px;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  display: block;
  overflow-x: auto;
  white-space: nowrap;
  border-radius: 10px;
  border: 1px solid var(--line);
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  font-size: 15px;
  text-align: left;
  background: #FFFFFF;
}
.article-content table th {
  background: var(--brand-light);
  color: var(--text-main);
  font-weight: 600;
}
.article-content hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 42px 0;
}

/* Article footer */
.article-footer {
  border-top: 1px solid var(--line);
  margin: 42px auto 0;
  padding-top: 24px;
  max-width: 780px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
}
.article-footer .footer-link-group {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 12px;
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius-btn);
  color: var(--text-muted);
  font-weight: 500;
  transition: border-color .2s, color .2s, background .2s;
}
.btn-ghost:hover {
  border-color: var(--brand);
  background: var(--brand-light);
  color: var(--brand-dark);
}

/* Not found */
.article-notfound {
  text-align: center;
  padding: 50px 20px;
}
.article-notfound-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: var(--brand-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--brand);
}
.article-notfound h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}
.article-notfound p {
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 24px;
}
.article-notfound .btn-primary-custom {
  min-width: 160px;
}

/* Related section */
.related-section {
  background: #EEF3F8;
  padding: 72px 0;
  border-top: 1px solid #E1E9F2;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: .3px;
  margin-bottom: 8px;
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 36px;
}
.rel-card {
  background: #FFFFFF;
  border: 1px solid #E4EAF2;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.rel-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.rel-card .rel-card-img {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  display: block;
  background: var(--brand-light);
}
.rel-card .rel-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.rel-card:hover .rel-card-img img {
  transform: scale(1.04);
}
.rel-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.rel-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.rel-card-meta .tag-pill {
  font-size: 12px;
  padding: 4px 12px;
}
.rel-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}
.rel-card h3 a {
  color: var(--text-main);
  transition: color .2s;
}
.rel-card h3 a:hover {
  color: var(--brand);
}
.rel-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 18px;
  line-height: 1.7;
  flex: 1;
}
.rel-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand);
  font-weight: 600;
  font-size: 14px;
}
.rel-card-link:hover {
  color: var(--brand-dark);
}

/* CTA section */
.cta-section {
  padding: 72px 0;
}
.cta-box {
  background: linear-gradient(135deg, #EAF1FA 0%, #F4F8FD 100%);
  border: 1px solid #D9E6F5;
  border-radius: 24px;
  padding: 48px 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-box h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}
.cta-box p {
  color: var(--text-muted);
  margin: 0;
  font-size: 15px;
  max-width: 560px;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex-shrink: 0;
}

/* Footer */
.site-footer {
  background: #EFF3F8;
  border-top: 1px solid var(--line);
  padding-top: 64px;
  margin-top: 0;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}
.footer-desc {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 340px;
  margin-bottom: 0;
}
.footer-heading {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color .2s;
}
.footer-links a:hover {
  color: var(--brand);
}
.footer-contact p {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.footer-contact-icon {
  color: var(--brand);
  font-style: normal;
  font-weight: 600;
  display: inline-flex;
  width: 18px;
}
.footer-bottom {
  border-top: 1px solid #D8E1EC;
  margin-top: 48px;
  padding: 22px 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-weak);
}

/* Responsive */
@media (max-width: 1199.98px) {
  .navbar-nav .nav-link {
    padding-left: 12px !important;
    padding-right: 12px !important;
    font-size: 15px;
  }
  .article-card {
    padding: 44px 40px 36px;
  }
}

@media (max-width: 991.98px) {
  .site-header .navbar {
    min-height: 66px;
  }
  .navbar-brand {
    font-size: 18px;
  }
  .navbar-collapse {
    background: #FFFFFF;
    border-top: 1px solid var(--line);
    margin-top: 0;
    padding: 16px 0 24px;
    box-shadow: 0 18px 30px rgba(31, 61, 99, .06);
  }
  .navbar-collapse .navbar-nav {
    width: 100%;
    gap: 2px;
    padding: 0 8px;
  }
  .navbar-collapse .nav-link {
    font-size: 16px;
    padding: 13px 14px !important;
    border-radius: 10px;
    width: 100%;
  }
  .mobile-nav-cta {
    display: block;
    margin-top: 16px;
    padding: 0 8px;
  }
  .mobile-nav-cta .btn-nav-cta {
    width: 100%;
  }
  .d-lg-none.nav-mobile-cta-desktop {
    display: none;
  }
  .article-breadcrumb-wrap {
    padding-top: 12px;
  }
  .breadcrumb-custom .current {
    max-width: 180px;
  }
  .article-head h1 {
    font-size: 30px;
  }
  .article-card {
    padding: 34px 28px 30px;
    border-radius: 14px;
  }
  .related-section,
  .cta-section {
    padding: 60px 0;
  }
  .cta-box {
    padding: 36px 28px;
  }
}

@media (max-width: 767.98px) {
  .container-article {
    padding-left: 16px;
    padding-right: 16px;
  }
  .article-head {
    padding: 28px 0 24px;
  }
  .article-head h1 {
    font-size: 28px;
    letter-spacing: .2px;
  }
  .article-meta {
    gap: 10px;
  }
  .article-abstract {
    font-size: 14px;
    padding: 14px 16px;
  }
  .article-card {
    padding: 24px 18px 24px;
    margin-bottom: 24px;
    border-radius: 12px;
  }
  .article-content {
    font-size: 16px;
    line-height: 1.8;
  }
  .article-content p {
    margin-bottom: 20px;
  }
  .article-content h2 {
    font-size: 22px;
    margin-top: 36px;
  }
  .article-content blockquote {
    padding: 16px;
    font-size: 15px;
  }
  .article-content pre {
    padding: 16px;
    font-size: 13px;
    margin: 0 -4px 20px;
    width: calc(100% + 8px);
  }
  .article-footer {
    flex-direction: column;
    align-items: stretch;
  }
  .article-footer .footer-link-group {
    justify-content: center;
  }
  .article-footer .footer-link-group .btn-ghost {
    flex: 1;
    justify-content: center;
  }
  .section-title {
    font-size: 26px;
  }
  .rel-card-body {
    padding: 20px;
  }
  .cta-section {
    padding: 48px 0;
  }
  .cta-box {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 20px;
  }
  .cta-actions {
    width: 100%;
  }
  .cta-actions .btn-primary-custom,
  .cta-actions .btn-secondary-custom {
    flex: 1;
    padding: 0 18px;
  }
  .site-footer {
    padding-top: 48px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 4px;
  }
}

@media (max-width: 520px) {
  .navbar-brand .brand-mark + span {
    font-size: 16px;
    letter-spacing: 0;
  }
  .navbar-brand .brand-mark {
    width: 36px;
    height: 36px;
  }
  .article-head h1 {
    font-size: 25px;
  }
  .tag-pill {
    padding: 4px 10px;
    font-size: 12px;
  }
  .breadcrumb-custom {
    font-size: 13px;
    gap: 6px;
  }
  .breadcrumb-custom .current {
    max-width: 130px;
  }
}

/* roulang page: category1 */
:root {
      --primary: #2C6FD1;
      --primary-dark: #1B4E9E;
      --primary-light: #EAF1FA;
      --green: #148A60;
      --green-light: #E4F3ED;
      --amber: #C07814;
      --amber-light: #FBF1E3;
      --bg: #F7F9FB;
      --card: #FFFFFF;
      --text: #1F2A3C;
      --muted: #4A5B70;
      --weak: #8B99AC;
      --border: #DEE6EF;
      --focus-ring: #7AB0F0;
      --radius-lg: 16px;
      --radius-md: 8px;
      --radius-pill: 999px;
      --shadow: 0 10px 24px rgba(31, 61, 99, 0.06);
      --shadow-hover: 0 18px 32px rgba(31, 61, 99, 0.10);
    }

    html {
      scroll-behavior: smooth;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      background: var(--bg);
      color: var(--text);
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
    }

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

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

    button,
    input {
      font: inherit;
    }

    h1,
    h2,
    h3,
    h4,
    p {
      margin: 0;
    }

    :focus-visible {
      outline: 3px solid var(--focus-ring);
      outline-offset: 2px;
      border-radius: 4px;
    }

    .container {
      max-width: 1240px;
    }

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

    /* ---------- Header ---------- */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1060;
      background: rgba(255, 255, 255, 0.94);
      border-bottom: 1px solid rgba(222, 230, 239, 0.9);
      box-shadow: 0 4px 16px rgba(31, 61, 99, 0.04);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }

    .site-header .navbar {
      min-height: 76px;
      padding-top: 0;
      padding-bottom: 0;
    }

    .navbar-brand {
      display: inline-flex;
      align-items: center;
      padding: 10px 0;
      margin-right: 16px;
      color: var(--text);
      font-weight: 700;
      font-size: 18px;
      letter-spacing: 0.01em;
    }

    .navbar-brand:hover {
      color: var(--text);
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      flex-shrink: 0;
      margin-right: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(145deg, var(--primary), var(--primary-dark));
      color: #fff;
      font-size: 19px;
      font-weight: 700;
      border-radius: 11px;
      box-shadow: 0 6px 12px rgba(44, 111, 209, 0.18);
    }

    .site-header .nav-link {
      display: inline-flex;
      align-items: center;
      color: #2A3648;
      font-size: 16px;
      font-weight: 500;
      padding: 10px 16px;
      margin: 0 2px;
      border-radius: 9px;
    }

    .site-header .nav-link:hover {
      color: var(--primary);
      background: rgba(44, 111, 209, 0.06);
    }

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

    .btn-nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 46px;
      min-width: 116px;
      padding: 0 22px;
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      font-size: 15px;
      border-radius: 9px;
      border: 1px solid var(--primary);
      box-shadow: 0 8px 16px rgba(44, 111, 209, 0.16);
      transition: all 0.2s ease;
    }

    .btn-nav-cta:hover {
      color: #fff;
      background: var(--primary-dark);
      border-color: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 10px 20px rgba(44, 111, 209, 0.22);
    }

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

    .navbar-toggler {
      width: 48px;
      height: 48px;
      border: 1px solid var(--border);
      border-radius: 10px;
      background: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .navbar-toggler:focus {
      box-shadow: none;
      outline: 3px solid var(--focus-ring);
      outline-offset: 2px;
    }

    .navbar-toggler-icon {
      width: 22px;
      height: 18px;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%232C6FD1' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: center;
    }

    @media (max-width: 991.98px) {
      .site-header .navbar {
        min-height: 68px;
      }

      .navbar-brand {
        font-size: 16px;
      }

      .site-header .collapse.navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        padding: 18px 20px 24px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 18px 30px rgba(31, 61, 99, 0.08);
        z-index: 1061;
      }

      .site-header .nav-link {
        width: 100%;
        padding: 12px 12px;
        margin: 0;
        font-size: 16px;
      }
    }

    @media (max-width: 575.98px) {
      .navbar-brand .brand-mark {
        width: 34px;
        height: 34px;
        font-size: 17px;
      }

      .navbar-brand {
        font-size: 15.5px;
      }

      .navbar-toggler {
        width: 44px;
        height: 44px;
      }
    }

    /* ---------- Hero ---------- */
    .page-hero {
      position: relative;
      overflow: hidden;
      padding: 72px 0 58px;
      border-bottom: 1px solid var(--border);
      background:
        linear-gradient(115deg, rgba(255, 255, 255, 0.92) 10%, rgba(244, 248, 252, 0.88) 60%, rgba(222, 232, 243, 0.72) 100%),
        url("/assets/images/backpic/back-1.webp") center / cover no-repeat;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background: radial-gradient(circle at 80% 20%, rgba(44, 111, 209, 0.08), transparent 32%);
    }

    .page-hero .container {
      position: relative;
      z-index: 2;
    }

    .breadcrumb-line {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 13.5px;
      color: var(--weak);
      margin-bottom: 22px;
    }

    .breadcrumb-line a {
      color: var(--muted);
    }

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

    .breadcrumb-sep {
      color: #c3cedb;
    }

    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      padding: 6px 14px;
      background: rgba(255, 255, 255, 0.74);
      border: 1px solid var(--border);
      color: var(--muted);
      font-size: 13.5px;
      font-weight: 500;
      border-radius: var(--radius-pill);
      margin-bottom: 22px;
      box-shadow: 0 4px 10px rgba(31, 61, 99, 0.04);
    }

    .eyebrow-dot {
      width: 8px;
      height: 8px;
      margin-right: 9px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 4px rgba(20, 138, 96, 0.12);
    }

    .page-hero-title {
      font-size: 42px;
      line-height: 1.24;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text);
      max-width: 780px;
      margin-bottom: 18px;
    }

    .page-hero-desc {
      font-size: 17px;
      line-height: 1.85;
      color: var(--muted);
      max-width: 720px;
    }

    .page-hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 30px;
    }

    .btn-primary-custom,
    .btn-secondary-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 26px;
      border-radius: 9px;
      font-weight: 600;
      font-size: 15px;
      transition: all 0.2s ease;
    }

    .btn-primary-custom {
      background: var(--primary);
      border: 1px solid var(--primary);
      color: #fff;
      box-shadow: 0 8px 16px rgba(44, 111, 209, 0.16);
    }

    .btn-primary-custom:hover {
      background: var(--primary-dark);
      border-color: var(--primary-dark);
      color: #fff;
      transform: translateY(-1px);
    }

    .btn-secondary-custom {
      background: #fff;
      border: 1px solid var(--primary-light);
      color: var(--primary-dark);
      box-shadow: 0 4px 12px rgba(31, 61, 99, 0.04);
    }

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

    @media (max-width: 991.98px) {
      .page-hero {
        padding: 54px 0 46px;
      }

      .page-hero-title {
        font-size: 34px;
      }
    }

    @media (max-width: 575.98px) {
      .page-hero {
        padding: 42px 0 38px;
      }

      .page-hero-title {
        font-size: 30px;
      }

      .page-hero-desc {
        font-size: 16px;
      }

      .btn-primary-custom,
      .btn-secondary-custom {
        width: 100%;
      }
    }

    /* ---------- Split Content ---------- */
    .section-split {
      padding: 72px 0 80px;
    }

    .entry-panel {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 22px;
      padding: 40px;
      box-shadow: var(--shadow);
    }

    .entry-intro {
      padding-bottom: 32px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 30px;
    }

    .section-label {
      display: inline-flex;
      align-items: center;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: var(--radius-pill);
      padding: 5px 13px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 14px;
    }

    .entry-intro h2 {
      font-size: 28px;
      font-weight: 650;
      line-height: 1.4;
      margin-bottom: 14px;
    }

    .entry-intro p {
      color: var(--muted);
      font-size: 16px;
    }

    .content-cover {
      margin: 34px 0;
    }

    .content-cover img {
      width: 100%;
      height: 280px;
      object-fit: cover;
      border-radius: 16px;
      border: 1px solid var(--border);
      box-shadow: 0 14px 30px rgba(31, 61, 99, 0.08);
    }

    .content-cover figcaption {
      margin-top: 12px;
      padding-left: 6px;
      font-size: 13.5px;
      color: var(--weak);
    }

    .guide-block-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-top: 18px;
      margin-bottom: 8px;
    }

    .guide-block-title h2 {
      font-size: 26px;
      font-weight: 650;
    }

    .guide-block-title span {
      color: var(--weak);
      font-size: 14px;
      white-space: nowrap;
    }

    .guide-list {
      margin-top: 20px;
    }

    .guide-item {
      display: flex;
      gap: 20px;
      padding: 26px 4px;
      border-top: 1px solid var(--border);
    }

    .guide-index {
      flex-shrink: 0;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      box-shadow: 0 6px 12px rgba(44, 111, 209, 0.18);
    }

    .guide-item h3 {
      font-size: 18px;
      font-weight: 600;
      line-height: 1.5;
      margin-bottom: 6px;
    }

    .guide-item p {
      color: var(--muted);
      margin-top: 6px;
    }

    .notice-panel {
      display: flex;
      gap: 14px;
      margin-top: 34px;
      padding: 20px 22px;
      border-radius: 14px;
      background: var(--amber-light);
      border: 1px solid #f0d5ae;
      color: #6f4810;
    }

    .notice-panel .notice-title {
      font-weight: 700;
    }

    .notice-icon {
      width: 34px;
      height: 34px;
      flex-shrink: 0;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: rgba(192, 120, 20, 0.13);
      color: var(--amber);
      font-weight: 700;
    }

    .notice-panel p {
      font-size: 15px;
      color: #6f4810;
    }

    .table-wrapper {
      margin-top: 36px;
      overflow-x: auto;
      border: 1px solid var(--border);
      border-radius: 14px;
      background: #fff;
    }

    .env-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 640px;
    }

    .env-table th,
    .env-table td {
      text-align: left;
      padding: 14px 16px;
      vertical-align: top;
      border-bottom: 1px solid var(--border);
    }

    .env-table tr:last-child th,
    .env-table tr:last-child td {
      border-bottom: 0;
    }

    .env-table thead th {
      background: #F1F5FA;
      color: var(--text);
      font-weight: 600;
      font-size: 14px;
    }

    .env-table td {
      font-size: 15px;
      color: var(--muted);
    }

    .state-green {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--green);
      font-weight: 500;
    }

    .state-green::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--green);
    }

    @media (max-width: 991.98px) {
      .section-split {
        padding: 56px 0;
      }

      .entry-panel {
        padding: 28px;
      }
    }

    @media (max-width: 767.98px) {
      .section-split {
        padding: 40px 0 52px;
      }

      .entry-panel {
        padding: 20px;
        border-radius: 16px;
      }

      .entry-intro h2 {
        font-size: 22px;
      }

      .guide-block-title h2 {
        font-size: 22px;
      }

      .guide-block-title span {
        display: none;
      }

      .guide-item {
        flex-direction: column;
        gap: 10px;
        padding: 22px 0;
      }

      .guide-index {
        width: 34px;
        height: 34px;
        font-size: 14px;
      }

      .content-cover img {
        height: 200px;
      }
    }

    /* ---------- Sidebar ---------- */
    .entry-sidebar {
      position: sticky;
      top: 102px;
      display: flex;
      flex-direction: column;
      gap: 22px;
    }

    .side-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 18px;
      box-shadow: var(--shadow);
      padding: 26px;
      transition: box-shadow 0.2s ease;
    }

    .side-card:hover {
      box-shadow: var(--shadow-hover);
    }

    .side-card-title {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 650;
      color: var(--text);
      margin-bottom: 16px;
    }

    .side-card-title::before {
      content: "";
      width: 5px;
      height: 20px;
      border-radius: 4px;
      background: var(--primary);
    }

    .flow-steps {
      list-style: none;
      margin: 0;
      padding: 0;
      counter-reset: flow;
    }

    .flow-steps li {
      position: relative;
      counter-increment: flow;
      padding: 10px 0 10px 40px;
      color: var(--muted);
      font-size: 15px;
      border-bottom: 1px dashed var(--border);
    }

    .flow-steps li:last-child {
      border-bottom: 0;
    }

    .flow-steps li::before {
      content: counter(flow, decimal-leading-zero);
      position: absolute;
      left: 0;
      top: 12px;
      width: 26px;
      height: 26px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-light);
      color: var(--primary-dark);
      font-size: 12.5px;
      font-weight: 700;
      border-radius: 50%;
    }

    .side-link-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .side-link-list li {
      border-bottom: 1px solid var(--border);
    }

    .side-link-list li:last-child {
      border-bottom: 0;
    }

    .side-link-list a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 13px 4px;
      color: var(--muted);
      font-size: 15px;
      font-weight: 500;
    }

    .side-link-list a span {
      color: #bbc6d4;
      transition: transform 0.2s ease;
    }

    .side-link-list a:hover {
      color: var(--primary);
    }

    .side-link-list a:hover span {
      transform: translateX(3px);
      color: var(--primary);
    }

    .side-note {
      display: flex;
      gap: 12px;
      padding: 16px 16px 16px 18px;
      background: var(--green-light);
      border-radius: 12px;
      color: #11694c;
      font-size: 14.5px;
      margin-top: 18px;
      line-height: 1.8;
    }

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

    @media (max-width: 991.98px) {
      .entry-sidebar {
        position: static;
        margin-top: 24px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 18px;
      }
    }

    @media (max-width: 767.98px) {
      .entry-sidebar {
        grid-template-columns: 1fr;
      }

      .side-card {
        padding: 22px;
      }
    }

    /* ---------- FAQ ---------- */
    .section-faq {
      background: #fff;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 80px 0;
    }

    .faq-heading {
      max-width: 680px;
      margin-bottom: 36px;
    }

    .faq-heading h2 {
      font-size: 30px;
      font-weight: 680;
      line-height: 1.4;
      margin-bottom: 12px;
    }

    .faq-heading p {
      color: var(--muted);
    }

    .accordion-item {
      background: #fff;
      border: 0;
      border-bottom: 1px solid var(--border);
      border-radius: 0 !important;
    }

    .accordion-button {
      background: transparent;
      color: var(--text);
      font-size: 16.5px;
      font-weight: 600;
      padding: 20px 4px;
      box-shadow: none !important;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .accordion-button::after {
      color: var(--primary);
    }

    .accordion-button:hover,
    .accordion-button:not(.collapsed) {
      background: transparent;
      color: var(--primary-dark);
    }

    .accordion-button:not(.collapsed)::after {
      filter: none;
    }

    .accordion-body {
      color: var(--muted);
      font-size: 15.5px;
      padding: 4px 4px 22px;
      max-width: 820px;
    }

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

      .faq-heading h2 {
        font-size: 26px;
      }
    }

    /* ---------- CTA ---------- */
    .section-cta {
      padding: 76px 0 84px;
    }

    .cta-banner {
      position: relative;
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 42px 46px;
      box-shadow: var(--shadow);
    }

    .cta-banner::before {
      content: "";
      position: absolute;
      right: -80px;
      top: -100px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(44, 111, 209, 0.1), transparent 68%);
    }

    .cta-banner .row {
      position: relative;
      z-index: 2;
    }

    .cta-banner h2 {
      font-size: 28px;
      font-weight: 680;
      margin-bottom: 14px;
    }

    .cta-banner p {
      color: var(--muted);
      max-width: 660px;
    }

    .cta-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-start;
    }

    @media (max-width: 991.98px) {
      .section-cta {
        padding: 56px 0;
      }

      .cta-banner {
        padding: 32px 28px;
      }
    }

    @media (max-width: 767.98px) {
      .cta-banner h2 {
        font-size: 24px;
      }

      .cta-banner {
        border-radius: 16px;
      }
    }

    /* ---------- Footer ---------- */
    .site-footer {
      background: #EEF3F7;
      border-top: 1px solid var(--border);
      padding: 72px 0 40px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 18px;
      color: var(--text);
    }

    .footer-brand .brand-mark {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      font-size: 17px;
      box-shadow: none;
    }

    .footer-desc {
      color: var(--muted);
      font-size: 15px;
      line-height: 1.9;
      max-width: 340px;
    }

    .footer-heading {
      font-size: 15px;
      font-weight: 650;
      letter-spacing: 0.02em;
      color: var(--text);
      margin-bottom: 16px;
    }

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

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

    .footer-links a {
      color: var(--muted);
      font-size: 15px;
    }

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

    .footer-contact p {
      display: flex;
      gap: 10px;
      color: var(--muted);
      font-size: 15px;
      margin-bottom: 12px;
    }

    .footer-contact-icon {
      color: var(--primary);
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      border-top: 1px solid #d7e0ea;
      margin-top: 54px;
      padding-top: 26px;
      color: var(--weak);
      font-size: 14px;
    }

    @media (max-width: 991.98px) {
      .site-footer {
        padding: 56px 0 36px;
      }
    }

    @media (max-width: 767.98px) {
      .site-footer {
        padding: 44px 0 28px;
      }

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

/* roulang page: category2 */
:root {
  --brand: #2C6FD1;
  --brand-dark: #1B4E9E;
  --brand-light: #EAF1FA;
  --green: #148A60;
  --green-light: #E4F3ED;
  --amber: #C07814;
  --amber-light: #FFF3E0;
  --bg: #F7F9FB;
  --card: #FFFFFF;
  --text: #1F2A3C;
  --text-secondary: #4A5B70;
  --text-muted: #8B99AC;
  --border: #DEE6EF;
  --line: #E4EAF2;
  --focus: #7AB0F0;
  --radius-card: 16px;
  --radius-btn: 8px;
  --shadow-sm: 0 10px 24px rgba(31, 61, 99, 0.06);
  --shadow-md: 0 16px 32px rgba(31, 61, 99, 0.10);
}

* {
  box-sizing: border-box;
}

html,
body {
  overflow-x: hidden;
}

body {
  font-family: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

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

.button,
button,
.btn {
  transition: all 0.2s ease;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1040;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.site-header .navbar {
  min-height: 76px;
  padding-top: 0;
  padding-bottom: 0;
  background: #fff;
}

.site-header .navbar .container {
  position: relative;
}

.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  color: var(--text);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.navbar-brand:hover,
.navbar-brand:focus {
  color: var(--text);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--brand);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 6px 14px rgba(44, 111, 209, 0.22);
}

.navbar .nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.2rem;
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 500;
  border-radius: 10px;
  position: relative;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
  color: var(--brand);
}

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

.navbar .nav-link.active::after {
  content: "";
  position: absolute;
  left: 1.2rem;
  right: 1.2rem;
  bottom: 0.1rem;
  height: 3px;
  border-radius: 99px;
  background: var(--brand);
}

.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 1.6rem;
  background: var(--brand);
  color: #fff !important;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  box-shadow: 0 8px 16px rgba(44, 111, 209, 0.16);
  white-space: nowrap;
}

.btn-nav-cta:hover,
.btn-nav-cta:focus {
  background: var(--brand-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(27, 78, 158, 0.20);
}

.navbar-toggler {
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #fff;
}

.navbar-toggler:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(44, 111, 209, 0.15);
  border-color: var(--focus);
}

.navbar-toggler-icon {
  width: 1.2em;
  height: 1.2em;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%232C6FD1' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

main {
  overflow: hidden;
}

.container {
  max-width: 1200px;
}

.page-intro {
  background: linear-gradient(120deg, #f0f5fc 0%, #ffffff 70%);
  padding: 76px 0 56px;
  border-bottom: 1px solid var(--line);
}

.page-intro h1 {
  margin: 12px 0 18px;
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  letter-spacing: -0.02em;
}

.page-intro .intro-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(44, 111, 209, 0.08);
  color: var(--brand-dark);
  font-size: 14px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.page-intro .intro-kicker i {
  color: var(--brand);
}

.page-intro .intro-lead {
  max-width: 680px;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.8;
}

.page-intro .intro-meta {
  margin-top: 24px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
}

.intro-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--green-light);
  color: var(--green);
  justify-content: center;
  font-size: 13px;
}

.page-intro-col {
  position: relative;
}

.intro-note-card {
  border: 1px solid var(--line);
  background: #ffffff;
  border-radius: var(--radius-card);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}

.intro-note-card .note-heading {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.intro-note-card .note-heading i {
  font-size: 22px;
  color: var(--green);
  background: var(--green-light);
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  flex-shrink: 0;
}

.intro-note-card h2 {
  font-size: 19px;
  font-weight: 650;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.intro-note-card p {
  color: var(--text-secondary);
  font-size: 15px;
  margin: 0;
}

.section-block {
  padding: 92px 0;
}

.section-block-sm {
  padding: 76px 0;
}

.eyebrow-label {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--brand);
  text-transform: uppercase;
}

.section-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 18px;
  color: var(--text);
  letter-spacing: -0.01em;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 17px;
  max-width: 700px;
  margin-bottom: 0;
}

.feature-split {
  background: #ffffff;
  padding: 96px 0;
  border-bottom: 1px solid var(--line);
}

.feature-media {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 360px;
}

.feature-copy {
  padding-left: 22px;
}

.feature-copy h2 {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 16px;
  line-height: 1.3;
}

.feature-copy .lead {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 28px;
}

.feature-points {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.feature-point {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.feature-point .point-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--brand-light);
  color: var(--brand-dark);
  font-size: 14px;
  font-weight: 700;
}

.feature-point h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 3px;
}

.feature-point p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
}

.fact-section {
  background: var(--bg);
  padding: 92px 0;
  border-bottom: 1px solid var(--line);
}

.fact-head {
  margin-bottom: 52px;
}

.fact-list {
  border-top: 1px solid var(--border);
}

.fact-row {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 28px 12px;
  border-bottom: 1px solid var(--border);
  background: #fff;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.fact-row:hover {
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.fact-row + .fact-row {
  border-top: 0;
}

.fact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--brand-light);
  color: var(--brand);
  font-size: 22px;
  flex-shrink: 0;
}

.fact-content {
  flex: 1 1 auto;
  padding-right: 16px;
}

.fact-content h3 {
  font-size: 19px;
  font-weight: 650;
  margin-bottom: 6px;
}

.fact-content p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 15px;
  max-width: 740px;
}

.fact-state {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--green-light);
  color: var(--green);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 999px;
  white-space: nowrap;
}

.fact-state i {
  font-size: 12px;
}

.notice-tip-section {
  background: #ffffff;
  padding: 70px 0;
  border-bottom: 1px solid var(--line);
}

.notice-tip {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  max-width: 1060px;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(192, 120, 20, 0.06), rgba(255, 255, 255, 0.9));
  border: 1px solid rgba(192, 120, 20, 0.16);
  border-left: 4px solid var(--amber);
  border-radius: 16px;
  padding: 28px 32px;
}

.notice-tip .tip-icon {
  background: var(--amber-light);
  color: var(--amber);
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  flex-shrink: 0;
}

.notice-tip h2 {
  font-size: 19px;
  font-weight: 650;
  color: var(--text);
  margin-bottom: 4px;
}

.notice-tip p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 15px;
}

.compare-section {
  background: var(--bg);
  padding: 92px 0;
}

.compare-head {
  margin-bottom: 46px;
}

.compare-table {
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  overflow: hidden;
}

.table-custom {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.table-custom th {
  padding: 20px 26px;
  text-align: left;
  font-weight: 600;
  background: var(--brand-light);
  color: var(--brand-dark);
  border-bottom: 1px solid var(--border);
  font-size: 16px;
}

.table-custom td {
  padding: 20px 26px;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  color: var(--text-secondary);
}

.table-custom tr:last-child td {
  border-bottom: 0;
}

.table-custom td:first-child {
  color: var(--text);
  font-weight: 600;
  width: 32%;
}

.table-custom .strong-tip {
  color: var(--amber);
  font-weight: 600;
}

.table-custom .safe-tip {
  color: var(--green);
  font-weight: 600;
}

.faq-section {
  background: #ffffff;
  padding: 92px 0;
  border-top: 1px solid var(--line);
}

.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}

.faq-title {
  font-size: 34px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 42px;
}

.faq-item {
  background: #ffffff;
}

.accordion-item {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--border);
}

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

.accordion-button {
  background: transparent;
  border: 0;
  box-shadow: none;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  padding: 22px 0;
  line-height: 1.5;
}

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

.accordion-button:focus {
  box-shadow: none;
  outline: 2px solid var(--focus);
  outline-offset: 4px;
  border-radius: 8px;
}

.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232C6FD1'%3e%3cpath d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3e%3c/svg%3e");
  background-size: 16px 16px;
  transition: transform 0.25s ease;
  width: 20px;
  height: 20px;
}

.accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232C6FD1'%3e%3cpath d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3e%3c/svg%3e");
}

.accordion-body {
  padding: 0 0 24px;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.85;
}

.faq-support {
  max-width: 820px;
  margin: 46px auto 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
}

.faq-support p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 15px;
}

.faq-support a {
  font-weight: 600;
}

.cta-section {
  background: var(--bg);
  padding: 72px 0;
}

.cta-band {
  background: linear-gradient(135deg, #eaf1fa, #f8fbff);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-sm);
}

.cta-copy {
  max-width: 620px;
}

.cta-copy h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}

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

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

.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 2rem;
  background: var(--brand);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  box-shadow: 0 8px 16px rgba(44, 111, 209, 0.16);
  transition: all 0.2s ease;
}

.btn-primary-custom:hover,
.btn-primary-custom:focus {
  background: var(--brand-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 22px rgba(27, 78, 158, 0.20);
}

.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 2rem;
  background: #ffffff;
  color: var(--brand-dark);
  font-size: 16px;
  font-weight: 600;
  border: 1px solid var(--brand);
  border-radius: var(--radius-btn);
  transition: all 0.2s ease;
}

.btn-outline-custom:hover,
.btn-outline-custom:focus {
  background: var(--brand-light);
  color: var(--brand-dark);
  border-color: var(--brand-dark);
}

.site-footer {
  background: #eef2f7;
  padding: 60px 0 24px;
  border-top: 1px solid var(--line);
}

.site-footer .footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.site-footer .footer-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  max-width: 320px;
}

.footer-heading {
  font-size: 15px;
  font-weight: 650;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

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

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 15px;
  display: inline-block;
  padding: 2px 0;
}

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

.footer-contact {
  color: var(--text-secondary);
  font-size: 15px;
}

.footer-contact p {
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact-icon {
  color: var(--brand);
  font-style: normal;
  font-size: 14px;
}

.footer-bottom {
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-muted);
  font-size: 14px;
}

@media (max-width: 1200px) {
  .page-intro h1 {
    font-size: 40px;
  }
}

@media (max-width: 991px) {
  .site-header .navbar-collapse {
    padding: 14px 0 10px;
    border-top: 1px solid var(--line);
    margin-top: 8px;
    background: #fff;
  }

  .site-header .navbar-nav {
    width: 100%;
    gap: 6px;
  }

  .navbar .nav-link {
    justify-content: flex-start;
    padding: 0.8rem 1rem;
    border-radius: 10px;
    min-height: 48px;
    font-size: 16px;
  }

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

  .navbar .nav-link.active {
    background: var(--brand-light);
  }

  .page-intro {
    padding: 64px 0 48px;
  }

  .page-intro h1 {
    font-size: 38px;
  }

  .feature-split {
    padding: 72px 0;
  }

  .feature-media img {
    min-height: 260px;
  }

  .fact-section,
  .compare-section,
  .faq-section {
    padding: 68px 0;
  }

  .section-block,
  .section-block-sm {
    padding: 60px 0;
  }

  .cta-band {
    padding: 40px;
  }

  .cta-actions .btn-primary-custom,
  .cta-actions .btn-outline-custom {
    width: 100%;
  }
}

@media (max-width: 767px) {
  .page-intro h1 {
    font-size: 32px;
  }

  .section-title {
    font-size: 27px;
  }

  .feature-copy h2,
  .cta-copy h2 {
    font-size: 25px;
  }

  .navbar-brand {
    font-size: 18px;
    gap: 8px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 16px;
  }

  .feature-split,
  .fact-section,
  .compare-section,
  .faq-section,
  .cta-section {
    padding: 56px 0;
  }

  .feature-media {
    margin-bottom: 12px;
  }

  .fact-row {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 16px;
    padding: 22px 0;
  }

  .fact-content {
    flex-basis: calc(100% - 80px);
    padding-right: 0;
  }

  .fact-state {
    margin-left: 72px;
    width: fit-content;
  }

  .notice-tip {
    flex-direction: column;
    padding: 24px;
  }

  .table-custom th,
  .table-custom td {
    padding: 16px 18px;
    font-size: 14px;
  }

  .cta-section {
    padding-bottom: 48px;
  }

  .cta-band {
    padding: 32px 24px;
  }

  .site-footer {
    padding: 44px 0 28px;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .navbar-brand {
    max-width: 240px;
    white-space: normal;
    line-height: 1.35;
  }

  .page-intro .intro-lead {
    font-size: 16px;
  }

  .page-intro .intro-meta {
    flex-direction: column;
    gap: 12px;
  }

  .accordion-button {
    font-size: 16px;
  }

  .faq-support {
    padding: 20px;
  }
}

/* roulang page: category3 */
:root {
  --primary: #2C6FD1;
  --primary-deep: #1B4E9E;
  --primary-soft: #EAF1FA;
  --green: #148A60;
  --green-soft: #E4F3ED;
  --amber: #C07814;
  --page-bg: #F7F9FB;
  --card-bg: #FFFFFF;
  --text: #1F2A3C;
  --text-2: #4A5B70;
  --text-3: #8B99AC;
  --line: #DEE6EF;
  --line-soft: #E4EAF2;
  --focus: #7AB0F0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-btn: 8px;
  --shadow: 0 10px 24px rgba(31, 61, 99, 0.06);
  --shadow-hover: 0 18px 32px rgba(31, 61, 99, 0.10);
  --shadow-btn: 0 8px 16px rgba(44, 111, 209, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  background: var(--page-bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

body.modal-open,
body:has(.modal.show) {
  padding-right: 0 !important;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease;
}

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

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

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

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text);
  line-height: 1.4;
}

.container {
  max-width: 1200px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 600;
  padding: 13px 24px;
  border: 1px solid transparent;
  transition: all .2s ease;
  white-space: nowrap;
}

.btn:focus-visible,
.btn:focus {
  outline: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
.accordion-button:focus-visible {
  outline: 3px solid rgba(122, 176, 240, .5);
  outline-offset: 2px;
}

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

.btn-solid:hover,
.btn-solid:focus {
  background: var(--primary-deep);
  color: #fff;
  border-color: var(--primary-deep);
  box-shadow: 0 12px 20px rgba(44, 111, 209, 0.20);
  transform: translateY(-2px);
}

.btn-outline {
  background: rgba(255, 255, 255, .9);
  color: var(--primary);
  border-color: #C9D9EC;
}

.btn-outline:hover,
.btn-outline:focus {
  background: var(--primary-soft);
  color: var(--primary-deep);
  border-color: #B6CDE8;
  transform: translateY(-2px);
}

.btn-light-line {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, .9);
}

.btn-light-line:hover {
  background: rgba(255, 255, 255, .12);
  color: #fff;
  border-color: #fff;
}

/* Header */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line-soft);
  position: sticky;
  top: 0;
  z-index: 1040;
}

.navbar {
  padding: 14px 0;
  min-height: 72px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .01em;
}

.navbar-brand:hover {
  color: var(--text);
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(145deg, #3584E4 0%, #1B4E9E 100%);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  margin-right: 10px;
  box-shadow: 0 6px 12px rgba(44, 111, 209, 0.22);
  flex: 0 0 36px;
}

.navbar .navbar-nav {
  gap: 2px;
}

.navbar .navbar-nav .nav-link {
  font-size: 16px;
  font-weight: 500;
  color: #2F425A;
  padding: 10px 14px !important;
  border-radius: 8px;
  line-height: 1.4;
  position: relative;
}

.navbar .navbar-nav .nav-link:hover {
  color: var(--primary-deep);
  background: #F1F6FC;
}

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

.btn-nav-cta {
  height: 44px;
  line-height: 44px;
  padding: 0 22px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  display: inline-block;
  box-shadow: var(--shadow-btn);
  transition: all .2s ease;
  border: 1px solid transparent;
}

.btn-nav-cta:hover {
  background: var(--primary-deep);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(27, 78, 158, .2);
}

.navbar-toggler {
  border: 1px solid #D8E2EE;
  border-radius: 8px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.navbar-toggler-icon {
  width: 20px;
  height: 20px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%234A5B70' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

/* FAQ lead */
.faq-lead {
  background: linear-gradient(180deg, #FFFFFF 0%, #F3F7FC 100%);
  border-bottom: 1px solid var(--line-soft);
  padding: 58px 0 40px;
  position: relative;
}

.faq-lead::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(520px 240px at 85% 20%, rgba(44, 111, 209, 0.08), transparent 70%),
    radial-gradient(400px 180px at 70% 90%, rgba(20, 138, 96, 0.04), transparent 70%);
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: 14px;
  color: var(--text-3);
  margin-bottom: 18px;
  gap: 8px;
}

.crumbs a {
  color: var(--text-3);
}

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

.faq-lead h1 {
  font-size: clamp(34px, 4vw, 46px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
  max-width: 720px;
}

.faq-lead .lead-text {
  font-size: 17px;
  line-height: 1.85;
  color: var(--text-2);
  max-width: 620px;
  margin-bottom: 30px;
}

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

.lead-visual {
  position: relative;
  z-index: 1;
}

.lead-visual img {
  width: 100%;
  border-radius: 20px;
  box-shadow: var(--shadow-hover);
  border: 1px solid rgba(222, 230, 239, 0.8);
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

/* FAQ layout */
.faq-layout {
  padding: 64px 0 76px;
  background: var(--page-bg);
}

.faq-panel {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 34px 34px 20px;
  box-shadow: var(--shadow);
}

.faq-group-block {
  margin-bottom: 36px;
}

.faq-group-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 21px;
  font-weight: 600;
  margin: 0 0 4px;
  padding: 10px 0 8px;
}

.group-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 0 6px;
}

/* Accordion */
.accordion .accordion-item {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
}

.accordion .accordion-item:first-of-type {
  border-radius: 0;
}

.accordion .accordion-item:last-of-type {
  border-radius: 0;
}

.faq-accordion .accordion-button {
  background: transparent;
  color: var(--text);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.6;
  padding: 20px 44px 20px 0;
  border-radius: 0;
  box-shadow: none;
  transition: color .2s ease;
}

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

.faq-accordion .accordion-button::after {
  background-image: none;
  content: "+";
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 400;
  color: var(--primary);
  border-radius: 50%;
  transition: transform .3s ease, background .2s;
}

.faq-accordion .accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
}

.faq-accordion .accordion-body {
  padding: 2px 46px 28px 0;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.9;
}

/* Sidebar */
.side-sticky {
  position: sticky;
  top: 92px;
}

.side-card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.side-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.contact-meta {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}

.contact-meta li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 10px;
}

.contact-meta .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  margin-top: 10px;
  flex: 0 0 7px;
}

.contact-meta .mail-text {
  word-break: break-all;
}

.side-card .btn {
  width: 100%;
}

.btn-cta-sm {
  height: 44px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  border: 1px solid var(--primary);
  transition: all .2s ease;
}

.btn-cta-sm:hover {
  background: var(--primary-deep);
  border-color: var(--primary-deep);
  color: #fff;
  transform: translateY(-1px);
}

.btn-soft-sm {
  height: 44px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid #D3E0F0;
  transition: all .2s ease;
}

.btn-soft-sm:hover {
  background: #DCE8F7;
  border-color: #B9CFE8;
  color: var(--primary-deep);
  transform: translateY(-1px);
}

.side-entry-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.side-entry-list li + li {
  border-top: 1px solid var(--line-soft);
}

.side-entry-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  transition: all .2s ease;
}

.side-entry-list a:hover {
  color: var(--primary);
  padding-left: 5px;
}

.side-entry-list a .arrow {
  color: var(--text-3);
  font-size: 18px;
  line-height: 1;
}

.side-entry-list a:hover .arrow {
  color: var(--primary);
  transform: translateX(4px);
  transition: transform .2s;
}

/* Quick tips */
.quick-tips {
  background: #fff;
  padding: 72px 0 80px;
  border-top: 1px solid var(--line-soft);
}

.quick-tips .section-title {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 10px;
}

.quick-tips .section-subtitle {
  color: var(--text-2);
  margin-bottom: 36px;
}

.tip-card {
  height: 100%;
  background: var(--page-bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s;
}

.tip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: #D0DEEE;
}

.tip-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.tip-card.green .tip-icon {
  background: var(--green-soft);
  color: var(--green);
}

.tip-card.amber .tip-icon {
  background: #FAF1E2;
  color: var(--amber);
}

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

.tip-card p {
  color: var(--text-2);
  font-size: 15px;
  margin: 0;
  line-height: 1.85;
}

/* Guide band */
.guide-band-section {
  padding: 56px 0 72px;
  background: var(--page-bg);
}

.guide-band {
  background-image: linear-gradient(120deg, rgba(234, 241, 250, .94), rgba(255, 255, 255, .68)), url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  border: 1px solid var(--line-soft);
  border-radius: 24px;
  padding: 56px;
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.guide-band h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 14px;
}

.guide-band p {
  color: var(--text-2);
  font-size: 16px;
  max-width: 560px;
  margin-bottom: 0;
}

.guide-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

/* Prefooter */
.prefooter-cta {
  padding: 0 0 56px;
  background: var(--page-bg);
}

.contact-panel {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: 24px;
  padding: 36px 40px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.contact-panel-copy {
  flex: 1 1 380px;
}

.contact-panel h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 8px;
}

.contact-panel p {
  color: var(--text-2);
  margin-bottom: 0;
}

.contact-panel-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  align-items: center;
}

.contact-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--text);
}

.contact-meta-item .ic {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

/* Footer */
.site-footer {
  background: #E9F0F8;
  border-top: 1px solid #DDE7F1;
}

.site-footer .container {
  padding-top: 56px;
}

.footer-brand {
  display: flex;
  align-items: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-2);
  max-width: 340px;
  margin-bottom: 0;
}

.footer-heading {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

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

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

.footer-links a {
  color: var(--text-2);
  font-size: 15px;
}

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

.footer-contact {
  font-size: 15px;
  color: var(--text-2);
}

.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 10px;
}

.footer-contact-icon {
  color: var(--primary);
  width: 16px;
  text-align: center;
  font-weight: 700;
}

.footer-bottom {
  border-top: 1px solid #D7E1EE;
  margin-top: 40px;
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  font-size: 14px;
  color: var(--text-3);
}

/* Responsive */
@media (max-width: 1199.98px) {
  .navbar .navbar-nav .nav-link {
    font-size: 15px;
    padding-left: 12px !important;
    padding-right: 12px !important;
  }
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: 16px;
    box-shadow: var(--shadow-hover);
    padding: 12px 8px;
    margin-top: 12px;
  }

  .navbar .navbar-nav .nav-link {
    padding: 12px 16px !important;
    font-size: 16px;
  }

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

  .faq-lead {
    padding: 40px 0 36px;
  }

  .lead-visual {
    margin-top: 22px;
  }

  .faq-layout {
    padding: 48px 0 56px;
  }

  .side-sticky {
    position: static;
    margin-top: 24px;
  }

  .guide-band {
    padding: 40px 28px;
  }

  .guide-actions {
    justify-content: flex-start;
    margin-top: 24px;
  }

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

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

@media (max-width: 767.98px) {
  body {
    background-color: #fff;
  }

  .faq-lead h1 {
    font-size: 32px;
  }

  .faq-lead .lead-text {
    font-size: 16px;
  }

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

  .lead-actions .btn + .btn {
    margin-top: 0;
  }

  .faq-panel {
    padding: 24px 18px 12px;
    border-radius: 14px;
  }

  .faq-group-heading {
    font-size: 18px;
  }

  .faq-accordion .accordion-button {
    font-size: 15px;
    padding: 18px 38px 18px 0;
  }

  .faq-accordion .accordion-button::after {
    width: 24px;
    height: 24px;
  }

  .faq-accordion .accordion-body {
    font-size: 15px;
    line-height: 1.85;
    padding: 0 22px 24px 0;
  }

  .side-card {
    padding: 22px 18px;
  }

  .quick-tips {
    padding: 48px 0 56px;
  }

  .tip-card {
    padding: 24px 20px;
  }

  .guide-band-section {
    padding: 40px 0 48px;
  }

  .guide-band {
    padding: 34px 20px;
    border-radius: 16px;
  }

  .guide-band h2 {
    font-size: 22px;
  }

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

  .prefooter-cta {
    padding-bottom: 40px;
  }

  .contact-panel {
    padding: 28px 20px;
  }

  .contact-panel h2 {
    font-size: 20px;
  }

  .contact-panel-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category4 */
:root{
  --brand:#2C6FD1;
  --brand-deep:#1B4E9E;
  --brand-soft:#EAF1FA;
  --brand-light:#F0F6FD;
  --brand-line:#D9E7F8;
  --green:#148A60;
  --green-soft:#E4F3ED;
  --amber:#C07814;
  --page-bg:#F7F9FB;
  --card-bg:#FFFFFF;
  --ink:#1F2A3C;
  --ink-2:#4A5B70;
  --ink-3:#8B99AC;
  --line:#DEE6EF;
  --line-2:#E4EAF2;
  --focus:#7AB0F0;
  --shadow-sm:0 10px 24px rgba(31,61,99,.06);
  --shadow-md:0 18px 32px rgba(31,61,99,.10);
  --shadow-btn:0 8px 16px rgba(44,111,209,.16);
  --radius-card:16px;
  --radius-btn:8px;
  --radius-img:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","MiSans","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--page-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease}
a:hover{color:var(--brand-deep)}
button,input,select,textarea{font-family:inherit}
p{margin-top:0}
h1,h2,h3,h4{font-weight:600;color:var(--ink);line-height:1.3;margin:0 0 1rem}

/* header */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 6px 18px rgba(31,61,99,.04)}
.navbar{padding-top:.7rem;padding-bottom:.7rem;min-height:72px}
.navbar-brand{display:inline-flex;align-items:center;column-gap:10px;font-size:1.28rem;font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.2}
.navbar-brand:hover{color:var(--ink)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;background:var(--brand);color:#fff;border-radius:11px;font-weight:800;font-size:1.12rem;letter-spacing:.02em}
.navbar .nav-link{padding:.7rem .95rem;color:var(--ink-2);font-size:1rem;font-weight:500;border-radius:8px;line-height:1.2}
.navbar .nav-link:hover,.navbar .nav-link:focus{color:var(--brand-deep);outline:none}
.navbar .nav-link.active{color:var(--brand);font-weight:600;background:var(--brand-soft)}
.btn-nav-cta{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.58rem 1.4rem;background:var(--brand);border:1px solid var(--brand);border-radius:10px;color:#fff;font-weight:600;font-size:1rem;line-height:1.2;box-shadow:var(--shadow-btn);transition:all .2s ease}
.btn-nav-cta:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.navbar-toggler{border:1px solid var(--line-2);border-radius:10px;width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;background:#fff}
.navbar-toggler:focus{box-shadow:0 0 0 .25rem rgba(44,111,209,.15);outline:none}
.navbar-toggler-icon{width:22px;height:22px;background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%232C6FD1' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e")}

/* buttons */
.btn{border-radius:var(--radius-btn);padding:.72rem 1.4rem;font-weight:600;font-size:1rem;line-height:1.4;border:1px solid transparent;transition:all .2s ease}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:var(--shadow-btn);min-height:48px}
.btn-brand:hover,.btn-brand:focus{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;box-shadow:0 10px 22px rgba(44,111,209,.22);transform:translateY(-1px)}
.btn-ghost{background:var(--brand-soft);border-color:var(--brand-line);color:var(--brand-deep);min-height:48px}
.btn-ghost:hover,.btn-ghost:focus{background:#fff;border-color:var(--brand);color:var(--brand-deep)}
.btn:focus-visible,.nav-link:focus-visible,.toc-links a:focus-visible,.btn-nav-cta:focus-visible{outline:2px solid var(--focus);outline-offset:2px}

/* hero */
.page-hero{position:relative;z-index:1;padding:88px 0 82px;background:
  linear-gradient(100deg,rgba(234,241,250,.98) 0%,rgba(235,242,251,.9) 36%,rgba(246,250,253,.72) 70%,rgba(255,255,255,.55) 100%),
  url('/assets/images/backpic/back-1.webp') center right/cover no-repeat;
  border-bottom:1px solid var(--line)}
.page-hero-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;font-size:.88rem;color:var(--ink-3);margin-bottom:1.4rem}
.page-hero-crumb a{color:var(--ink-2);font-weight:500}
.page-hero-crumb a:hover{color:var(--brand-deep)}
.page-hero-crumb .crumb-sep{color:#B7C2D1}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.8);border:1px solid var(--brand-line);padding:.4rem .9rem;border-radius:999px;color:var(--brand-deep);font-size:.85rem;font-weight:600;letter-spacing:.06em;margin-bottom:1.4rem}
.hero-eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green)}
.page-hero h1{max-width:760px;font-size:2.75rem;font-weight:700;letter-spacing:-.02em;line-height:1.18;margin-bottom:1.2rem}
.hero-summary{max-width:690px;font-size:1.12rem;line-height:1.85;color:var(--ink-2);margin-bottom:2.1rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem}

/* glance */
.service-glance{padding:70px 0 40px}
.glance-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.glance-item{background:var(--card-bg);border:1px solid var(--line-2);border-radius:var(--radius-card);padding:26px 24px 24px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.glance-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#D1DEF0}
.glance-icon{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;background:var(--brand-soft);border-radius:12px;color:var(--brand-deep);font-weight:800;font-size:1.2rem;margin-bottom:1rem}
.glance-item:nth-child(2) .glance-icon{background:var(--green-soft);color:var(--green)}
.glance-item:nth-child(3) .glance-icon{background:#F2EEFB;color:#6B5BBE}
.glance-item:nth-child(4) .glance-icon{background:#FDF4E7;color:var(--amber)}
.glance-item h3{font-size:1.05rem;font-weight:600;margin-bottom:.45rem}
.glance-item p{font-size:.95rem;color:var(--ink-2);line-height:1.7;margin-bottom:0}

/* page toc */
.page-toc{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;position:sticky;top:72px;z-index:900;box-shadow:0 8px 20px rgba(31,61,99,.03)}
.toc-inner{display:flex;align-items:center;column-gap:26px}
.toc-label{flex-shrink:0;font-weight:700;color:var(--ink);font-size:.98rem}
.toc-label span{color:var(--brand);margin-right:6px}
.toc-links{display:flex;gap:10px;overflow-x:auto;padding:2px 2px 4px;scrollbar-width:none}
.toc-links::-webkit-scrollbar{display:none}
.toc-links a{display:inline-flex;align-items:center;gap:8px;background:var(--page-bg);border:1px solid var(--line);border-radius:999px;padding:.36rem 1rem;color:var(--ink-2);font-size:.92rem;font-weight:500;white-space:nowrap;transition:all .2s ease}
.toc-links a .toc-num{color:var(--brand);font-weight:700}
.toc-links a:hover,.toc-links a:active{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-deep)}

/* service reader */
.service-reader{padding:90px 0 110px}
.reader-column{max-width:900px;margin:0 auto}
.article-section{border-bottom:1px solid var(--line);padding-bottom:64px;margin-bottom:62px}
.article-section:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0}
.article-heading{display:flex;align-items:flex-start;gap:18px;margin-bottom:22px}
.heading-number{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:14px;color:var(--brand-deep);font-weight:800;font-size:1.05rem;letter-spacing:-.02em}
.article-heading h2{font-size:1.72rem;font-weight:650;margin:0;line-height:1.3}
.lead-text{font-size:1.08rem;color:var(--ink-2);line-height:1.85;margin-bottom:1.4rem}
.article-section h3{font-size:1.15rem;font-weight:600;margin:2.1rem 0 .7rem}
.article-section ul{padding-left:0;list-style:none;margin-bottom:1.3rem}
.article-section ul li{position:relative;padding-left:30px;margin-bottom:10px;color:var(--ink-2)}
.article-section ul li::before{content:"✓";position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;background:var(--green-soft);color:var(--green);font-size:.72rem;font-weight:800;display:inline-flex;align-items:center;justify-content:center}
.article-section ol{padding-left:1.2rem;color:var(--ink-2);margin-bottom:1.3rem}
.article-section ol li{margin-bottom:.55rem}
.article-line{color:var(--ink-2);margin-bottom:1.15rem}
.article-line strong{color:var(--ink)}

.info-panel{background:var(--brand-light);border:1px solid var(--brand-line);border-left:4px solid var(--brand);border-radius:14px;padding:22px 26px;margin:1.5rem 0}
.info-panel .panel-title{display:flex;align-items:center;gap:8px;color:var(--brand-deep);font-weight:700;margin-bottom:.6rem}
.info-panel p{color:var(--ink-2);margin-bottom:0;font-size:.98rem}
.safety-panel{background:var(--green-soft);border:1px solid #C9ECDE;border-left:4px solid var(--green);border-radius:14px;padding:22px 26px;margin:1.5rem 0;display:flex;gap:14px}
.status-dot{flex:0 0 auto;display:inline-flex;width:12px;height:12px;border-radius:50%;background:var(--green);margin-top:.5rem}
.safety-panel .safety-text{color:#105E44}
.safety-panel .safety-text strong{display:inline-block;margin-bottom:.2rem;color:#0B4A35}

.content-figure{margin:2rem 0 1.6rem;background:#fff;border:1px solid var(--line-2);border-radius:var(--radius-card);padding:12px;box-shadow:var(--shadow-sm)}
.content-figure img{border-radius:calc(var(--radius-card) - 8px);width:100%;object-fit:cover}
.content-figure figcaption{padding:.8rem .4rem .3rem;color:var(--ink-3);font-size:.88rem;line-height:1.6}

/* consult rows */
.consult-rows{margin-top:1.2rem}
.consult-item{display:grid;grid-template-columns:60px minmax(0,1fr);gap:18px;padding:24px 2px;border-bottom:1px solid var(--line)}
.consult-item:first-child{border-top:1px solid var(--line)}
.consult-q{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand-deep);font-weight:800;font-size:1rem;flex:0 0 auto}
.consult-item h3{font-size:1.05rem;margin:0 0 .4rem 0}
.consult-item p{color:var(--ink-2);font-size:.97rem;margin-bottom:0;line-height:1.8}
.consult-item p strong{color:var(--ink)}

/* contact table-ish */
.contact-detail-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:1.4rem 0}
.contact-detail-box{background:#fff;border:1px solid var(--line-2);border-radius:14px;padding:22px 24px;box-shadow:var(--shadow-sm)}
.contact-detail-box .detail-label{color:var(--ink-3);font-size:.82rem;letter-spacing:.05em;font-weight:600;margin-bottom:.5rem;text-transform:uppercase}
.contact-detail-box .detail-value{color:var(--ink);font-weight:600;font-size:1.06rem}
.contact-detail-box .detail-note{color:var(--ink-2);font-size:.92rem;margin-top:.25rem;line-height:1.7}

/* process band */
.process-band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:88px 0}
.process-intro{max-width:720px;margin-bottom:3rem}
.process-intro .eyebrow-2{display:inline-block;color:var(--brand);font-weight:700;font-size:.9rem;letter-spacing:.08em;margin-bottom:.7rem;text-transform:uppercase}
.process-intro h2{font-size:2rem;font-weight:650;margin-bottom:.8rem}
.process-intro p{color:var(--ink-2);font-size:1.05rem;line-height:1.8;margin-bottom:0}
.process-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.process-step{background:var(--page-bg);border:1px solid var(--line-2);border-radius:var(--radius-card);padding:28px 24px;transition:all .22s ease;position:relative}
.process-step:hover{background:#fff;box-shadow:var(--shadow-md);transform:translateY(-3px)}
.process-number{display:block;width:40px;height:40px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.05rem;margin-bottom:1.1rem;box-shadow:0 6px 14px rgba(44,111,209,.16)}
.process-step h3{font-size:1.08rem;margin-bottom:.5rem}
.process-step p{color:var(--ink-2);font-size:.95rem;line-height:1.75;margin-bottom:0}

/* cta contact */
.cta-service{padding:78px 0 96px}
.cta-service-card{background:var(--brand-light);border:1px solid var(--brand-line);border-radius:22px;padding:50px 54px;position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}
.cta-service-card::before{content:"";position:absolute;right:-80px;top:-80px;width:240px;height:240px;border-radius:50%;background:rgba(44,111,209,.06)}
.cta-service-card::after{content:"";position:absolute;right:-20px;bottom:-110px;width:190px;height:190px;border-radius:50%;background:rgba(26,91,158,.06)}
.cta-service-inner{position:relative;z-index:2}
.cta-text h2{font-size:2rem;font-weight:650;margin-bottom:.8rem}
.cta-text p{color:var(--ink-2);font-size:1.04rem;line-height:1.8;margin-bottom:1.6rem}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-contact-items{display:flex;flex-direction:column;gap:16px;margin-bottom:0}
.cta-contact-item{display:flex;align-items:flex-start;gap:12px;background:#fff;border-radius:14px;border:1px solid var(--line-2);padding:16px 18px}
.cta-contact-icon{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:var(--brand-soft);color:var(--brand-deep);font-size:1.05rem}
.cta-contact-item .cta-meta{color:var(--ink-2);font-size:.94rem;line-height:1.6}
.cta-contact-item .cta-meta strong{display:block;color:var(--ink);font-size:1rem;margin-bottom:.15rem}

/* footer */
.site-footer{background:#EDF2F8;border-top:1px solid var(--line-2);padding:70px 0 26px;color:var(--ink-2)}
.site-footer .footer-brand{display:flex;align-items:center;gap:10px;font-size:1.2rem;font-weight:700;color:var(--ink);margin-bottom:1rem}
.footer-brand .brand-mark{width:34px;height:34px;font-size:1rem;border-radius:10px}
.footer-desc{max-width:360px;font-size:.96rem;line-height:1.8;color:var(--ink-2);margin-bottom:1.4rem}
.footer-heading{font-size:1rem;font-weight:600;color:var(--ink);margin-bottom:1rem}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:.65rem}
.footer-links a{color:var(--ink-2);font-size:.95rem;line-height:1.5;transition:color .2s}
.footer-links a:hover{color:var(--brand-deep)}
.footer-contact p{margin-bottom:.65rem;display:flex;align-items:center;gap:10px;font-size:.95rem}
.footer-contact-icon{color:var(--brand)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;border-top:1px solid #D5DFEB;margin-top:46px;padding-top:24px;font-size:.88rem;color:var(--ink-3);gap:8px}

/* responsive */
@media (max-width:1199.98px){
  .page-hero h1{font-size:2.45rem}
  .cta-service-card{padding:42px 40px}
}
@media (max-width:991.98px){
  .page-toc{position:relative;top:auto}
  .glance-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .process-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .page-hero{padding:70px 0 68px;background:linear-gradient(180deg,rgba(235,243,252,.96) 0%,rgba(246,249,252,.9) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat}
  .service-reader{padding:70px 0}
  .navbar-collapse{padding-top:1rem;padding-bottom:.6rem;background:#fff;border-top:1px solid var(--line)}
  .navbar .nav-link{padding:.65rem .6rem}
  .btn-nav-cta{margin-top:.8rem}
  .process-band{padding:70px 0}
}
@media (max-width:767.98px){
  body{font-size:15px}
  .page-hero{padding:56px 0 58px}
  .page-hero h1{font-size:2rem}
  .hero-summary{font-size:1.04rem}
  .service-glance{padding:56px 0 34px}
  .glance-grid{grid-template-columns:1fr}
  .service-reader{padding:58px 0 70px}
  .article-section{padding-bottom:44px;margin-bottom:48px}
  .article-heading{gap:13px}
  .article-heading h2{font-size:1.4rem}
  .heading-number{width:40px;height:40px;font-size:.95rem;border-radius:11px}
  .contact-detail-grid{grid-template-columns:1fr}
  .cta-contact-items{margin-top:1.4rem}
  .process-grid{grid-template-columns:1fr}
  .cta-service{padding:48px 0 64px}
  .cta-service-card{padding:30px 24px;border-radius:16px}
  .cta-text h2{font-size:1.6rem}
  .page-toc{padding:16px 0}
  .toc-inner{display:block}
  .toc-label{margin-bottom:.8rem}
  .footer{padding-top:54px}
}
@media (max-width:575.98px){
  .page-hero h1{font-size:1.72rem;line-height:1.3}
  .navbar{--bs-navbar-padding-y:.5rem}
  .brand-mark{width:34px;height:34px;border-radius:9px;font-size:1rem}
  .navbar-brand{font-size:1.05rem}
  .btn-nav-cta{min-height:44px}
  .hero-eyebrow{font-size:.78rem}
  .hero-summary{font-size:1rem}
  .info-panel,.safety-panel{padding:18px 18px}
  .consult-item{grid-template-columns:52px minmax(0,1fr);gap:12px;padding:18px 0}
  .process-intro h2{font-size:1.55rem}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:4px}
}