/* roulang page: index */
:root {
  --bh-primary: #145C4C;
  --bh-primary-deep: #0A352C;
  --bh-copper: #C6A062;
  --bh-copper-light: #E4C795;
  --bh-paper: #F7F4EE;
  --bh-card: #FFFFFF;
  --bh-ink: #22231F;
  --bh-muted: #6B6A63;
  --bh-border: #E3DFD5;
  --bh-radius-lg: 16px;
  --bh-radius-md: 10px;
  --bh-radius-sm: 8px;
  --bh-shadow: 0 10px 30px rgba(10, 53, 44, 0.06);
  --bh-font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
  --bh-font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--bh-font-body);
  background-color: var(--bh-paper);
  color: var(--bh-ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--bh-font-display);
  color: var(--bh-primary-deep);
  line-height: 1.35;
  margin-top: 0;
}
p {
  margin-bottom: 1rem;
}
a {
  color: var(--bh-primary);
  text-decoration: none;
  transition: color .25s ease;
}
a:hover {
  color: var(--bh-primary-deep);
}
img {
  max-width: 100%;
}
button, input, select, textarea {
  font-family: inherit;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--bh-copper);
  outline-offset: 2px;
}
.section {
  padding: clamp(3.2rem, 6vw, 5.4rem) 0;
}
.container {
  max-width: 1280px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .15em;
  color: var(--bh-copper);
  text-transform: uppercase;
  margin-bottom: .75rem;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--bh-copper);
  display: inline-block;
}
.section-title {
  font-size: clamp(1.65rem, 3.2vw, 2.4rem);
  font-weight: 700;
  letter-spacing: .02em;
  margin-bottom: 1rem;
}
.section-lead {
  color: var(--bh-muted);
  max-width: 720px;
  margin-bottom: 0;
}
.text-highlight {
  color: var(--bh-copper-light);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--bh-border);
  backdrop-filter: blur(8px);
}
.site-header .navbar {
  padding: .75rem 0;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  white-space: nowrap;
}
.brand-logo .brand-mark {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bh-primary-deep);
  color: var(--bh-copper-light);
  border-radius: 10px;
  font-size: 1.2rem;
}
.brand-logo .brand-text {
  font-family: var(--bh-font-display);
  font-weight: 800;
  font-size: 1.28rem;
  color: var(--bh-primary-deep);
}
.site-header .navbar-nav {
  gap: .25rem;
}
.site-header .nav-link {
  position: relative;
  color: var(--bh-ink);
  font-weight: 500;
  font-size: .95rem;
  padding: .55rem .85rem;
  border-radius: 999px;
  white-space: nowrap;
}
.site-header .nav-link:hover,
.site-header .nav-link:focus {
  color: var(--bh-primary);
}
.site-header .nav-link.active {
  color: var(--bh-primary);
  background: rgba(20, 92, 76, 0.08);
}
.site-header .nav-link.active::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: .2rem;
  height: 2px;
  background: var(--bh-copper);
  border-radius: 2px;
}
.btn {
  border-radius: var(--bh-radius-sm);
  font-weight: 600;
  transition: all .3s ease;
}
.btn-gold {
  background: var(--bh-copper);
  border: 1px solid var(--bh-copper);
  color: #0A352C;
  padding: .55rem 1.1rem;
  border-radius: 999px;
}
.btn-gold:hover,
.btn-gold:focus {
  background: var(--bh-copper-light);
  border-color: var(--bh-copper-light);
  color: #0A352C;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(198, 160, 98, 0.25);
}
.btn-hero {
  background: var(--bh-copper-light);
  border: 1px solid var(--bh-copper-light);
  color: #0A352C;
  border-radius: 999px;
  padding: .75rem 1.45rem;
  font-weight: 700;
}
.btn-hero:hover,
.btn-hero:focus {
  background: var(--bh-copper);
  border-color: var(--bh-copper);
  color: #0A352C;
  transform: translateY(-2px);
}
.btn-hero-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.68);
  color: #fff;
  border-radius: 999px;
  padding: .75rem 1.45rem;
  font-weight: 600;
}
.btn-hero-outline:hover,
.btn-hero-outline:focus {
  background: #fff;
  border-color: #fff;
  color: var(--bh-primary-deep);
  transform: translateY(-2px);
}
.navbar-toggler {
  border: 1px solid var(--bh-border);
  border-radius: 8px;
}
.navbar-toggler:focus {
  box-shadow: 0 0 0 2px var(--bh-copper);
}
.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(10, 53, 44, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Hero */
.hero-section {
  position: relative;
  background: linear-gradient(105deg, rgba(6, 37, 30, 0.94) 0%, rgba(10, 53, 44, 0.9) 62%, rgba(20, 92, 76, 0.74) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: #fff;
  padding: clamp(4rem, 8vw, 6.8rem) 0 3.6rem;
}
.hero-section h1 {
  color: #fff;
  font-size: clamp(2.1rem, 4.8vw, 3.5rem);
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.22;
  margin-bottom: 1.25rem;
}
.hero-lead {
  color: rgba(255, 255, 255, 0.84);
  font-size: 1.08rem;
  max-width: 660px;
  margin-bottom: 2.2rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
}
.hero-note {
  font-size: .9rem;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: 0;
}
.hero-cover {
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
  max-height: 400px;
  object-fit: cover;
  width: 100%;
}
.hero-stats {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  margin-top: 3.2rem;
  padding-top: 2.2rem;
  padding-bottom: .6rem;
}
.hero-stat {
  padding: .35rem 0 .35rem 1.4rem;
  border-left: 1px solid rgba(255, 255, 255, 0.24);
}
.hero-stat .stat-num {
  font-family: var(--bh-font-display);
  font-size: 2.4rem;
  line-height: 1;
  font-weight: 800;
  color: var(--bh-copper-light);
}
.hero-stat .stat-unit {
  font-size: .95rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.68);
}
.hero-stat .stat-name {
  color: #fff;
  font-weight: 600;
  margin-top: .5rem;
}
.hero-stat .stat-desc {
  font-size: .86rem;
  color: rgba(255, 255, 255, 0.68);
  line-height: 1.6;
  margin: .2rem 0 0;
}

/* Catalog cards */
.catalog-section {
  background: var(--bh-paper);
}
.svc-card {
  position: relative;
  background: var(--bh-card);
  border: 1px solid var(--bh-border);
  border-radius: var(--bh-radius-md);
  overflow: hidden;
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease;
}
.svc-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--bh-copper), var(--bh-primary));
  transition: width .35s ease;
}
.svc-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(10, 53, 44, 0.1);
}
.svc-card:hover::before {
  width: 100%;
}
.svc-card__media {
  height: 170px;
  overflow: hidden;
  background: #e9e4d8;
}
.svc-card--wide .svc-card__media {
  height: 240px;
}
.svc-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .4s ease;
}
.svc-card:hover .svc-card__media img {
  transform: scale(1.04);
}
.svc-card__body {
  padding: 1.5rem 1.6rem 1.6rem;
  display: flex;
  flex-direction: column;
}
.svc-card__badge {
  display: inline-block;
  background: rgba(20, 92, 76, 0.08);
  color: var(--bh-primary);
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
  padding: .28rem .8rem;
  margin-bottom: .85rem;
  align-self: flex-start;
}
.svc-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: .8rem;
}
.svc-card p {
  color: var(--bh-muted);
  font-size: .94rem;
  line-height: 1.75;
  margin-bottom: 1.2rem;
}
.svc-card__link {
  margin-top: auto;
  font-weight: 600;
  color: var(--bh-primary);
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}
.svc-card__link i {
  transition: transform .3s ease;
}
.svc-card:hover .svc-card__link i {
  transform: translateX(4px);
}
.svc-card--dark {
  background: var(--bh-primary-deep);
  border-color: var(--bh-primary-deep);
  color: #fff;
}
.svc-card--dark h3 {
  color: #fff;
}
.svc-card--dark p {
  color: rgba(255, 255, 255, 0.74);
}
.svc-card--dark .svc-card__link {
  color: var(--bh-copper-light);
}

/* Process */
.process-section {
  background: #fff;
}
.step-item {
  position: relative;
  background: var(--bh-paper);
  border: 1px solid var(--bh-border);
  border-radius: var(--bh-radius-md);
  padding: 2rem 1.8rem;
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease;
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--bh-shadow);
}
.step-num {
  font-family: var(--bh-font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--bh-copper);
  display: block;
  margin-bottom: .55rem;
}
.step-item h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: .6rem;
}
.step-item p {
  color: var(--bh-muted);
  font-size: .94rem;
  margin-bottom: 0;
}

/* Compare */
.compare-section {
  background: var(--bh-paper);
}
.compare-card {
  border: 1px solid var(--bh-border);
  border-radius: var(--bh-radius-md);
  padding: 1.9rem 1.8rem;
  background: var(--bh-card);
  height: 100%;
  box-shadow: var(--bh-shadow);
}
.compare-card h3 {
  font-size: 1.2rem;
  margin-bottom: 1.4rem;
  font-weight: 700;
}
.compare-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.compare-list li {
  display: flex;
  gap: .7rem;
  margin-bottom: 1.25rem;
  font-size: .96rem;
  color: var(--bh-muted);
  line-height: 1.7;
}
.compare-list li:last-child {
  margin-bottom: 0;
}
.compare-list li i {
  color: #C6A062;
  flex-shrink: 0;
  line-height: 1.7;
}
.compare-card--new {
  background: var(--bh-primary-deep);
  border-color: var(--bh-primary-deep);
}
.compare-card--new h3 {
  color: #fff;
}
.compare-card--new .compare-list li {
  color: rgba(255, 255, 255, 0.88);
}
.compare-card--new .compare-list li i {
  color: var(--bh-copper-light);
}
.compare-note {
  font-size: .82rem;
  color: var(--bh-muted);
  margin-top: 1.4rem;
  line-height: 1.7;
}

/* News */
.news-section {
  background: #fff;
}
.news-feature {
  background: var(--bh-paper);
  border: 1px solid var(--bh-border);
  border-radius: var(--bh-radius-md);
  overflow: hidden;
  height: 100%;
  transition: box-shadow .3s ease, transform .3s ease;
}
.news-feature:hover {
  box-shadow: var(--bh-shadow);
  transform: translateY(-3px);
}
.news-feature__media {
  height: 220px;
  overflow: hidden;
}
.news-feature__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-feature__content {
  padding: 1.5rem 1.5rem 1.7rem;
}
.news-feature__content h3 {
  font-size: 1.28rem;
  font-weight: 700;
  margin: .7rem 0 .6rem;
}
.news-feature__content p {
  color: var(--bh-muted);
  font-size: .94rem;
  margin-bottom: .9rem;
}
.news-feature__meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  font-size: .83rem;
  color: var(--bh-muted);
}
.news-feature__meta i {
  color: var(--bh-copper);
}
.tag-badge {
  display: inline-block;
  background: rgba(20, 92, 76, 0.08);
  color: var(--bh-primary);
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
  padding: .28rem .75rem;
}
.news-mini {
  display: flex;
  gap: 1rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--bh-border);
  align-items: flex-start;
  transition: background-color .25s ease;
}
.news-mini:first-child {
  padding-top: 0;
}
.news-mini:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.news-mini__number {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(20, 92, 76, 0.08);
  color: var(--bh-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: .8rem;
  flex-shrink: 0;
}
.news-mini h4 {
  font-family: var(--bh-font-body);
  font-size: .98rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 0 0 .45rem;
}
.news-mini h4 a {
  color: var(--bh-ink);
}
.news-mini h4 a:hover {
  color: var(--bh-primary);
}
.news-mini p {
  color: var(--bh-muted);
  font-size: .86rem;
  margin: 0 0 .4rem;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-mini__meta {
  font-size: .8rem;
  color: var(--bh-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
}
.news-mini__meta i {
  color: var(--bh-copper);
}
.news-empty-state {
  border: 1px dashed var(--bh-border);
  border-radius: var(--bh-radius-md);
  padding: 3rem 1rem;
  text-align: center;
  color: var(--bh-muted);
  background: var(--bh-paper);
}

/* FAQ */
.faq-section {
  background: var(--bh-paper);
}
.bsh-accordion .accordion-item {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--bh-border);
  border-radius: 0;
}
.bsh-accordion .accordion-header {
  background: transparent;
}
.bsh-accordion .accordion-button {
  background: transparent;
  box-shadow: none;
  border: 0;
  font-family: var(--bh-font-display);
  color: var(--bh-primary-deep);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 1.25rem 1px;
}
.bsh-accordion .accordion-button:not(.collapsed) {
  background: transparent;
  color: var(--bh-primary);
}
.bsh-accordion .accordion-button::after {
  background-image: none;
  content: "+";
  font-family: var(--bh-font-body);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--bh-primary);
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transform: none;
  transition: transform .3s ease;
}
.bsh-accordion .accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  color: var(--bh-copper);
}
.bsh-accordion .accordion-body {
  padding: 0 2.2rem 1.4rem .15rem;
  color: var(--bh-muted);
  font-size: .96rem;
  line-height: 1.85;
}

/* Contact */
.contact-section {
  background: #fff;
}
.contact-wrap {
  background: linear-gradient(115deg, rgba(6, 37, 30, 0.93), rgba(10, 53, 44, 0.84) 70%), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  border-radius: 18px;
  padding: clamp(2.2rem, 4vw, 3.6rem);
  color: #fff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.1);
}
.contact-wrap h2 {
  color: #fff;
  font-weight: 800;
  margin-bottom: 1.1rem;
}
.contact-wrap .section-lead {
  color: rgba(255, 255, 255, 0.8);
}
.contact-point {
  display: flex;
  gap: .8rem;
  align-items: flex-start;
  color: rgba(255, 255, 255, 0.8);
  font-size: .95rem;
  line-height: 1.75;
  margin-bottom: 1.2rem;
}
.contact-point i {
  color: var(--bh-copper-light);
  font-size: 1.15rem;
  margin-top: .2rem;
}
.cta-form {
  background: #fff;
  border-radius: 14px;
  padding: 1.8rem;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.1);
}
.cta-form .form-label {
  font-weight: 600;
  color: var(--bh-primary-deep);
  margin-bottom: .4rem;
}
.cta-form .form-control,
.cta-form .form-select {
  border: 1px solid var(--bh-border);
  border-bottom: 2px solid transparent;
  border-radius: 8px;
  padding: .72rem .9rem;
  color: var(--bh-ink);
  background-color: #fbfaf7;
}
.cta-form .form-control:focus,
.cta-form .form-select:focus {
  border-color: var(--bh-border);
  border-bottom-color: var(--bh-primary);
  background-color: #fff;
  box-shadow: none;
}
.cta-form textarea.form-control {
  min-height: 110px;
}
.btn-submit {
  background: var(--bh-copper);
  border: 1px solid var(--bh-copper);
  color: #0A352C;
  border-radius: 8px;
  padding: .75rem 1.4rem;
  font-weight: 700;
  width: 100%;
  transition: background-color .3s ease, border-color .3s ease;
}
.btn-submit:hover,
.btn-submit:focus {
  background: var(--bh-copper-light);
  border-color: var(--bh-copper-light);
  color: #0A352C;
}
.form-note {
  color: var(--bh-muted);
  font-size: .82rem;
  margin-top: .75rem;
}

/* Footer */
.site-footer {
  background: var(--bh-primary-deep);
  color: rgba(255, 255, 255, 0.76);
}
.footer-top {
  padding: 3.2rem 0 2rem;
}
.footer-brand {
  font-family: var(--bh-font-display);
  color: #fff;
  font-size: 1.45rem;
  font-weight: 800;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.footer-brand i {
  color: var(--bh-copper-light);
}
.footer-desc {
  margin-top: 1rem;
  font-size: .9rem;
  color: rgba(255, 255, 255, 0.66);
  max-width: 360px;
}
.footer-title {
  color: #fff;
  font-size: .98rem;
  font-weight: 700;
  margin-bottom: .9rem;
}
.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-list li {
  margin-bottom: .55rem;
}
.footer-list a {
  color: rgba(255, 255, 255, 0.7);
  font-size: .9rem;
}
.footer-list a:hover {
  color: var(--bh-copper-light);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 1.2rem 0;
  font-size: .82rem;
  color: rgba(255, 255, 255, 0.5);
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.65);
}
.footer-bottom a:hover {
  color: #fff;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .4s ease, transform .4s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal,
  .reveal.revealed {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* Responsive */
@media (max-width: 991.98px) {
  .site-header .navbar-collapse {
    background: #fff;
    border: 1px solid var(--bh-border);
    border-radius: 16px;
    padding: 1rem;
    margin-top: .6rem;
    box-shadow: var(--bh-shadow);
  }
  .site-header .navbar-nav {
    gap: .1rem;
  }
  .site-header .nav-link {
    padding: .65rem 1rem;
  }
  .site-header .nav-link.active::after {
    left: 1.2rem;
    right: auto;
    width: 32px;
  }
  .navbar-toggler {
    display: block;
  }
  .hero-action-btn {
    width: 100%;
    justify-content: center;
  }
}
@media (max-width: 767.98px) {
  .section {
    padding: 2.7rem 0;
  }
  .catalog-section .row {
    row-gap: 1rem;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .compare-card {
    margin-bottom: 1rem;
  }
  .contact-wrap {
    padding: 1.5rem;
  }
  .cta-form {
    margin-top: 1.2rem;
    padding: 1.3rem;
  }
  .news-mini__number {
    display: none;
  }
  .footer-top .row > div {
    margin-bottom: 1.4rem;
  }
}

/* roulang page: category1 */
:root{
      --brand-green:#145C4C;
      --brand-green-deep:#0A352C;
      --brand-green-soft:#31796B;
      --brand-copper:#C6A062;
      --brand-copper-deep:#A9834B;
      --brand-paper:#F7F4EE;
      --brand-paper-deep:#EFEBE2;
      --brand-white:#FFFFFF;
      --brand-ink:#22231F;
      --brand-muted:#64645E;
      --brand-border:#E3DFD5;
      --brand-radius-lg:16px;
      --brand-radius-md:12px;
      --brand-radius-sm:8px;
      --brand-shadow:0 10px 30px rgba(10,53,44,.06);
      --brand-side-space:16px;
    }
    *{box-sizing:border-box;}
    html{scroll-behavior:smooth;}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
      background:var(--brand-paper);
      color:var(--brand-ink);
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:color .25s ease,border-color .25s ease,background-color .25s ease,box-shadow .25s ease;}
    a:hover{color:var(--brand-green);}
    img{max-width:100%;height:auto;display:block;}
    .container{max-width:1280px;}
    .section-space{padding:84px 0;}

    .btn{
      font-weight:600;
      border-radius:var(--brand-radius-sm);
      padding:.7rem 1.45rem;
      border:1px solid transparent;
      transition:transform .25s ease,background-color .25s ease,background-position .3s ease,box-shadow .25s ease,color .25s ease,border-color .25s ease;
    }
    .btn-gold{
      background:var(--brand-copper);
      border-color:var(--brand-copper);
      color:#1D2A25;
      box-shadow:0 6px 18px rgba(198,160,98,.22);
    }
    .btn-gold:hover{
      background:#D3B079;
      border-color:#D3B079;
      color:#10251F;
      transform:translateY(-2px);
      box-shadow:0 10px 24px rgba(198,160,98,.3);
    }
    .btn-green{
      background:var(--brand-green-deep);
      color:#F4EFE4;
      border-color:var(--brand-green-deep);
    }
    .btn-green:hover{
      background:var(--brand-green);
      color:#fff;
      transform:translateY(-2px);
    }
    .btn-light-outline{
      background:transparent;
      border-color:#D8D2C5;
      color:var(--brand-ink);
    }
    .btn-light-outline:hover{
      border-color:var(--brand-green);
      color:var(--brand-green);
    }
    .btn:focus-visible,.form-control:focus-visible,.form-select:focus-visible{
      outline:2px solid var(--brand-copper);
      outline-offset:3px;
      box-shadow:none;
    }

    .site-header{
      background:rgba(247,244,238,.96);
      border-bottom:1px solid var(--brand-border);
      position:relative;
      z-index:1050;
    }
    .navbar{
      min-height:74px;
      padding:.6rem 0;
    }
    .brand-logo{
      display:flex;
      align-items:center;
      gap:.7rem;
      font-weight:800;
      letter-spacing:.02em;
      color:var(--brand-green-deep) !important;
    }
    .brand-mark{
      width:42px;height:42px;
      border-radius:12px;
      background:var(--brand-green-deep);
      color:#F4D6A8;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      font-size:1.1rem;
      box-shadow:0 6px 16px rgba(10,53,44,.16);
    }
    .brand-text{
      font-size:1.3rem;
      white-space:nowrap;
      color:var(--brand-green-deep);
    }
    .navbar-nav .nav-item{margin:0 .15rem;}
    .navbar-nav .nav-link{
      font-weight:600;
      color:var(--brand-muted);
      padding:.55rem .85rem !important;
      position:relative;
      border-radius:8px;
      white-space:nowrap;
    }
    .navbar-nav .nav-link::after{
      content:"";
      position:absolute;
      left:.8rem;right:.8rem;bottom:.15rem;
      height:2px;
      background:var(--brand-copper);
      border-radius:20px;
      transform:scaleX(0);
      transform-origin:left center;
      transition:transform .25s ease;
    }
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link:focus{color:var(--brand-green-deep);}
    .navbar-nav .nav-link:hover::after{
      transform:scaleX(1);
    }
    .navbar-nav .nav-link.active{
      background:rgba(20,92,76,.1);
      color:var(--brand-green-deep);
    }
    .navbar-nav .nav-link.active::after{
      transform:scaleX(1);
    }
    .navbar-toggler{
      border:0;
      color:var(--brand-green-deep);
      padding:.35rem .55rem;
    }
    .navbar-toggler:focus{
      outline:none;
      box-shadow:0 0 0 3px rgba(20,92,76,.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='%23145C4C' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    @media (max-width:991.98px){
      .navbar-collapse{
        background:#FFF;
        border:1px solid var(--brand-border);
        border-radius:16px;
        margin-top:.8rem;
        padding:1rem 1.2rem 1.3rem;
        box-shadow:var(--brand-shadow);
      }
      .navbar-nav{gap:.25rem;}
      .navbar-nav .nav-link{
        display:inline-block;
        width:100%;
        margin:0;
      }
      .btn-gold.ms-lg-2{
        width:100%;
        margin-top:.6rem;
        text-align:center;
      }
    }

    .page-hero{
      position:relative;
      color:#F5FBF8;
      padding:86px 0 70px;
      overflow:hidden;
      background:
        linear-gradient(100deg,rgba(8,40,33,.95) 0%,rgba(15,77,64,.82) 58%,rgba(90,96,77,.62) 100%),
        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    }
    .page-hero::after{
      content:"";
      position:absolute;
      inset:auto 0 0 0;
      height:1px;
      background:linear-gradient(90deg,rgba(198,160,98,.7),rgba(198,160,98,0),rgba(198,160,98,.4));
    }
    .term-tag{
      display:inline-flex;
      align-items:center;
      gap:.4rem;
      background:rgba(198,160,98,.18);
      border:1px solid rgba(198,160,98,.45);
      color:#F5DDB3;
      border-radius:999px;
      padding:.32rem 1rem;
      font-size:.86rem;
      font-weight:600;
      letter-spacing:.16em;
      margin-bottom:1.4rem;
      backdrop-filter:blur(2px);
    }
    .page-hero h1{
      font-size:clamp(2rem,4.2vw,3.3rem);
      font-weight:800;
      letter-spacing:.02em;
      color:#FFFFFF;
      line-height:1.25;
      max-width:840px;
      margin:0 0 1.3rem;
      text-shadow:0 4px 20px rgba(0,0,0,.12);
    }
    .page-hero h1 span{
      color:#D9C090;
    }
    .hero-lead{
      font-size:1.08rem;
      line-height:1.85;
      color:rgba(240,247,242,.92);
      max-width:760px;
      margin-bottom:0;
    }
    .hero-breadcrumb{
      margin-top:2.2rem;
      display:flex;
      flex-wrap:wrap;
      gap:.45rem;
      align-items:center;
      color:rgba(255,255,255,.72);
      font-size:.9rem;
    }
    .hero-breadcrumb a{
      color:#F0E7D4;
      border-bottom:1px solid rgba(240,231,212,.35);
    }
    .hero-breadcrumb a:hover{color:#fff;border-bottom-color:#fff;}
    .hero-breadcrumb .bi{font-size:.75rem;color:#D9C090;}

    .category-main{
      padding:76px 0 72px;
    }
    .info-card{
      background:var(--brand-white);
      border:1px solid var(--brand-border);
      border-radius:var(--brand-radius-lg);
      padding:34px 34px 38px;
      margin-bottom:30px;
      box-shadow:0 6px 24px rgba(10,53,44,.04);
      transition:transform .25s ease,box-shadow .25s ease;
    }
    .info-card:hover{
      transform:translateY(-3px);
      box-shadow:0 12px 30px rgba(10,53,44,.09);
    }
    .card-index{
      display:inline-flex;
      align-items:center;
      gap:.5rem;
      color:var(--brand-copper-deep);
      font-weight:700;
      font-size:.85rem;
      letter-spacing:.12em;
      margin-bottom:1rem;
    }
    .card-index::after{
      content:"";
      width:42px;
      height:1px;
      background:var(--brand-copper);
    }
    .info-card h2{
      font-size:clamp(1.35rem,2.4vw,1.8rem);
      font-weight:700;
      color:var(--brand-green-deep);
      line-height:1.45;
      margin-bottom:.85rem;
    }
    .info-card .lead-text{
      color:var(--brand-muted);
      font-size:1rem;
      margin-bottom:1.1rem;
    }
    .info-card .art-image{
      border-radius:14px;
      object-fit:cover;
      width:100%;
      height:280px;
      margin:1.35rem 0;
    }
    .info-card p{
      color:#3E3F3A;
      margin-bottom:1.05rem;
    }
    .quote-block{
      border-left:3px solid var(--brand-copper);
      background:var(--brand-paper);
      border-radius:0 12px 12px 0;
      padding:1rem 1.4rem;
      margin:1.4rem 0;
      color:#42433D;
      font-size:1.02rem;
    }
    .check-list{
      list-style:none;
      margin:1.4rem 0 0;
      padding:0;
    }
    .check-list li{
      display:flex;
      gap:.7rem;
      align-items:flex-start;
      padding:.5rem 0;
      color:#3E3F3A;
    }
    .check-list li i{
      color:var(--brand-green);
      font-size:1.1rem;
      line-height:1.5;
    }

    .side-sticky{
      position:sticky;
      top:24px;
    }
    .side-card{
      background:var(--brand-paper);
      border:1px solid var(--brand-border);
      border-radius:var(--brand-radius-lg);
      padding:26px 26px 30px;
      margin-bottom:24px;
    }
    .side-symbol{
      width:42px;height:42px;
      background:var(--brand-green-deep);
      color:#F2D7A6;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:12px;
      font-size:1.1rem;
      margin-bottom:.9rem;
    }
    .side-card h3{
      font-size:1.18rem;
      font-weight:700;
      color:var(--brand-green-deep);
      margin-bottom:1rem;
    }
    .meta-line{
      display:flex;
      justify-content:space-between;
      gap:.8rem;
      border-bottom:1px dashed var(--brand-border);
      padding:.6rem 0;
      font-size:.95rem;
    }
    .meta-line .meta-label{
      color:var(--brand-muted);
    }
    .side-list{
      list-style:none;
      margin:0;
      padding:0;
    }
    .side-list li{
      border-bottom:1px dashed var(--brand-border);
    }
    .side-list li:last-child{border-bottom:0;}
    .side-list a{
      display:flex;
      gap:.65rem;
      align-items:flex-start;
      padding:.72rem .1rem;
      font-weight:500;
      color:#3E3F3A;
    }
    .side-list a i{
      color:var(--brand-copper-deep);
      line-height:1.6;
    }
    .side-list a:hover{
      color:var(--brand-green-deep);
    }
    .side-img-card{
      position:relative;
      border-radius:14px;
      overflow:hidden;
      min-height:170px;
      margin-top:.4rem;
      background:
        linear-gradient(160deg,rgba(8,40,33,.3),rgba(8,40,33,.78)),
        url('/assets/images/coverpic/cover-5.webp') center/cover no-repeat;
      display:flex;
      align-items:flex-end;
      padding:1rem;
    }
    .side-img-card span{
      color:#F6F3EA;
      font-size:.92rem;
      font-weight:600;
    }
    .side-note{
      background:#FFF;
      border:1px solid var(--brand-border);
      border-radius:14px;
      padding:1rem 1.1rem;
      font-size:.9rem;
      color:var(--brand-muted);
    }

    .principle-band{
      background:var(--brand-green-deep);
      color:rgba(255,255,255,.9);
      padding:82px 0 66px;
      position:relative;
      overflow:hidden;
    }
    .principle-band::before{
      content:"";
      position:absolute;
      width:400px;height:400px;
      border-radius:50%;
      background:rgba(198,160,98,.08);
      top:-180px;right:-100px;
    }
    .principle-head{
      margin-bottom:2.6rem;
    }
    .principle-head .pre-line{
      color:#D9C090;
      font-size:.88rem;
      letter-spacing:.18em;
      font-weight:600;
    }
    .principle-head h2{
      font-size:clamp(1.75rem,3vw,2.3rem);
      color:#FFF;
      font-weight:700;
      margin:.6rem 0 0;
    }
    .principle-item{
      border-top:1px solid rgba(255,255,255,.16);
      padding:1.4rem 0 .8rem;
    }
    .principle-item .step-num{
      color:#E1B977;
      font-weight:700;
      font-size:.9rem;
      letter-spacing:.1em;
    }
    .principle-item h3{
      font-size:1.2rem;
      margin:.5rem 0 .6rem;
      color:#FFF;
    }
    .principle-item p{
      margin:0;
      color:rgba(240,245,242,.78);
      font-size:.94rem;
    }

    .faq-panel{
      background:#FFF;
      border:1px solid var(--brand-border);
      border-left:5px solid var(--brand-green);
      border-radius:var(--brand-radius-md);
      padding:1.5rem 1.9rem;
    }
    .faq-panel h2{
      color:var(--brand-green-deep);
      font-size:clamp(1.5rem,2.6vw,2rem);
      font-weight:700;
    }
    .accordion-custom .accordion-item{
      background:transparent;
      border:0;
      border-bottom:1px solid var(--brand-border);
      border-radius:0;
    }
    .accordion-custom .accordion-button{
      background:transparent;
      box-shadow:none;
      border:0;
      font-weight:600;
      font-size:1rem;
      color:var(--brand-green-deep);
      padding:1rem .2rem;
      font-family:inherit;
    }
    .accordion-custom .accordion-button:not(.collapsed){
      color:var(--brand-green);
    }
    .accordion-custom .accordion-button::after{
      background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23C6A062'%3e%3cpath fill-rule='evenodd' d='M8 2a.5.5 0 0 1 .5.5v5h5a.5.5 0 0 1 0 1h-5v5a.5.5 0 0 1-1 0v-5h-5a.5.5 0 0 1 0-1h5v-5A.5.5 0 0 1 8 2Z'/%3e%3c/svg%3e");
      transition:transform .25s ease;
    }
    .accordion-custom .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='%23145C4C'%3e%3cpath fill-rule='evenodd' d='M8 2a.5.5 0 0 1 .5.5v5h5a.5.5 0 0 1 0 1h-5v5a.5.5 0 0 1-1 0v-5h-5a.5.5 0 0 1 0-1h5v-5A.5.5 0 0 1 8 2Z'/%3e%3c/svg%3e");
    }
    .accordion-custom .accordion-body{
      color:var(--brand-muted);
      line-height:1.85;
      padding:0 .2rem 1.2rem;
      font-size:.96rem;
    }
    .accordion-custom .accordion-button:focus{
      box-shadow:none;
      outline:none;
    }
    .accordion-custom .accordion-button:focus-visible{
      border-radius:6px;
      outline:2px solid var(--brand-copper);
      outline-offset:2px;
    }

    .contact-section{
      background:
        radial-gradient(circle at 85% 20%, rgba(198,160,98,.15), transparent 28%),
        url('/assets/images/backpic/back-3.png') center/cover no-repeat;
      background-color:var(--brand-green-deep);
      color:#F6F3EA;
      padding:84px 0;
    }
    .contact-head h2{
      color:#FFF;
      font-size:clamp(1.7rem,3vw,2.3rem);
      font-weight:800;
      margin:.2rem 0 .8rem;
    }
    .contact-head p{
      color:rgba(240,245,242,.83);
      max-width:680px;
    }
    .contact-feature-row{
      margin-top:2.2rem;
    }
    .contact-item{
      border-left:2px solid var(--brand-copper);
      padding:.2rem 0 .2rem 1.1rem;
      margin-bottom:1.1rem;
    }
    .contact-item .i-title{
      color:#E3CC9B;
      font-weight:600;
      font-size:.9rem;
      letter-spacing:.08em;
      margin-bottom:.25rem;
    }
    .contact-item p{
      margin:0;
      font-weight:600;
      color:#FFF;
      word-break:break-all;
    }
    .contact-item p a{
      color:#fff;
    }
    .contact-action{
      display:flex;
      flex-wrap:wrap;
      gap:.75rem;
      margin-top:1.8rem;
    }
    .btn-sm-gold{
      background:var(--brand-copper);
      border-color:var(--brand-copper);
      color:#18352B;
      font-weight:700;
      border-radius:10px;
      padding:.8rem 1.8rem;
    }
    .btn-sm-gold:hover{
      background:#E1BE7E;
      border-color:#E1BE7E;
      color:#10251F;
      transform:translateY(-2px);
      box-shadow:0 10px 24px rgba(198,160,98,.28);
    }
    .btn-sm-outline{
      border-color:rgba(198,160,98,.6);
      color:#F4E6CE;
      border-radius:10px;
      padding:.8rem 1.6rem;
    }
    .btn-sm-outline:hover{
      background:rgba(198,160,98,.16);
      color:#FFF;
      border-color:#D9C090;
    }
    .site-footer{
      background:#F1EDE4;
      border-top:1px solid var(--brand-border);
      padding-top:60px;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:.6rem;
      font-weight:800;
      font-size:1.25rem;
      color:var(--brand-green-deep);
      margin-bottom:.8rem;
    }
    .footer-brand i{
      color:var(--brand-copper-deep);
    }
    .footer-desc{
      color:var(--brand-muted);
      font-size:.94rem;
      line-height:1.8;
      max-width:340px;
    }
    .footer-title{
      color:#37574B;
      font-weight:700;
      font-size:.95rem;
      margin-bottom:.7rem;
      letter-spacing:.06em;
    }
    .footer-list{
      list-style:none;
      padding:0;
      margin:0;
    }
    .footer-list li{
      padding:.3rem 0;
    }
    .footer-list a{
      color:var(--brand-muted);
      font-size:.93rem;
    }
    .footer-list a:hover{
      color:var(--brand-green-deep);
    }
    .footer-bottom{
      border-top:1px solid rgba(20,92,76,.13);
      margin-top:42px;
      padding:1.15rem 0;
      font-size:.88rem;
      color:var(--brand-muted);
    }

    @media (max-width:991.98px){
      .side-sticky{
        position:static;
        margin-top:10px;
      }
      .info-card{
        padding:26px 24px 30px;
      }
    }
    @media (max-width:575.98px){
      .page-hero{padding:64px 0 54px;}
      .section-space{padding:52px 0;}
      .category-main{padding:48px 0;}
      .info-card{padding:22px 18px 26px;}
      .info-card .art-image{height:200px;}
      .card-index{letter-spacing:.06em;}
      .contact-section{padding:54px 0;}
    }
    @media (prefers-reduced-motion:reduce){
      *{
        transition-duration:.01ms!important;
        animation-duration:.01ms!important;
      }
      html{scroll-behavior:auto;}
    }

/* roulang page: article */
:root{
  --bsh-primary:#145C4C;
  --bsh-primary-deep:#0A352C;
  --bsh-copper:#C6A062;
  --bsh-copper-soft:#E4CBA2;
  --bsh-paper:#F7F4EE;
  --bsh-card-bg:#FFFFFF;
  --bsh-ink:#22231F;
  --bsh-muted:#6B6A63;
  --bsh-border:#E3DFD5;
  --bsh-border-dark:#CFC8B9;
  --bsh-shadow:0 10px 30px rgba(10,53,44,.06);
  --bsh-shadow-soft:0 4px 14px rgba(10,53,44,.05);
  --bsh-radius-lg:16px;
  --bsh-radius-base:10px;
  --bsh-radius-btn:8px;
  --bsh-serif:"Noto Serif SC","Songti SC","STSong",serif;
  --bsh-sans:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
html{scroll-behavior:smooth}
body{margin:0;padding:0;background:var(--bsh-paper);color:var(--bsh-ink);font-family:var(--bsh-sans);line-height:1.7;-webkit-font-smoothing:antialiased}
*,*::before,*::after{box-sizing:border-box}
a{color:inherit;text-decoration:none;outline:none;transition:color .25s,background .25s,border-color .25s,box-shadow .25s,transform .25s,opacity .25s}
img{max-width:100%;height:auto;display:inline-block}
button,input,select,textarea{font:inherit;outline:none;transition:border-color .25s,box-shadow .25s,background .25s}
h1,h2,h3,h4,h5,h6{font-family:var(--bsh-serif);line-height:1.35;font-weight:600;margin:0 0 1rem}
p{margin:0 0 1rem}
:focus-visible{outline:2px solid var(--bsh-copper);outline-offset:2px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,244,238,.95);
  border-bottom:1px solid rgba(227,223,213,.9);
  backdrop-filter:blur(12px);
}
.navbar{padding:.72rem 0}
.brand-logo{display:inline-flex;align-items:center;gap:.7rem;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px 12px 12px 5px;
  background:linear-gradient(145deg,var(--bsh-primary),var(--bsh-primary-deep));
  color:var(--bsh-copper-soft);font-size:1.28rem;box-shadow:0 6px 14px rgba(10,53,44,.18);
}
.brand-text{font-family:var(--bsh-serif);font-weight:700;font-size:1.28rem;letter-spacing:.02em;color:var(--bsh-ink)}
.navbar-nav .nav-link{
  position:relative;margin:0 .2rem;padding:.6rem 1rem;font-size:.95rem;font-weight:500;
  color:#49544E;white-space:nowrap;border-radius:999px;
}
.navbar-nav .nav-link::after{
  content:"";position:absolute;left:1.15rem;right:1.15rem;bottom:.35rem;height:2px;
  background:var(--bsh-copper);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .28s ease;
}
.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after{transform:scaleX(1)}
.navbar-nav .nav-link:hover{color:var(--bsh-primary)}
.navbar-nav .nav-link.active{color:var(--bsh-primary);font-weight:700;background:rgba(20,92,76,.08)}
.site-header .btn{padding:.62rem 1.4rem;border-radius:var(--bsh-radius-btn);font-weight:600}
.btn-gold{background:var(--bsh-copper);color:var(--bsh-primary-deep);border:1px solid var(--bsh-copper)}
.btn-gold:hover{background:#B38F56;border-color:#B38F56;color:#fff}
.btn-deep{background:var(--bsh-primary-deep);color:#fff;border:1px solid var(--bsh-primary-deep)}
.btn-deep:hover{background:var(--bsh-primary);border-color:var(--bsh-primary);color:#fff}
.btn-line{background:transparent;color:var(--bsh-primary-deep);border:1px solid var(--bsh-border-dark)}
.btn-line:hover{background:var(--bsh-primary-deep);border-color:var(--bsh-primary-deep);color:#fff}
.btn-line-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.65)}
.btn-line-light:hover{background:#fff;color:var(--bsh-primary-deep);border-color:#fff}
.navbar-toggler{border:0;padding:.4rem .5rem;box-shadow:none!important}
.navbar-toggler:focus{outline:2px solid rgba(198,160,98,.6);outline-offset:3px}
.navbar-toggler-icon{
  width:1.45em;height:1.45em;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23145C4C' stroke-width='2.4' stroke-linecap='round' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}
@media (max-width:991.98px){
  .navbar-collapse{
    margin-top:.9rem;border-top:1px solid var(--bsh-border);padding:1rem 0 .6rem;
    background:var(--bsh-paper);border-radius:0 0 14px 14px;
  }
  .navbar-nav .nav-link{display:block;padding:.7rem 1.1rem}
  .navbar-nav .nav-link::after{display:none}
  .site-header .btn{margin:.8rem 0 .2rem .2rem;width:calc(100% - .4rem)}
}

/* Article hero */
.article-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;padding:84px 0 104px;
}
.article-hero:before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(7,38,31,.96),rgba(20,92,76,.88),rgba(10,53,44,.74));
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb-wrap{
  display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;font-size:.9rem;
  color:rgba(255,255,255,.72);margin-bottom:1.4rem;
}
.breadcrumb-wrap a{color:rgba(255,255,255,.78)}
.breadcrumb-wrap a:hover{color:var(--bsh-copper-soft)}
.breadcrumb-wrap .crumb-active{color:#fff;opacity:.95}
.breadcrumb-icon{font-size:.8rem}
.hero-kicker{
  display:inline-flex;align-items:center;gap:.4rem;
  font-size:.78rem;letter-spacing:.2em;color:var(--bsh-copper-soft);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);
  padding:.3rem .9rem;border-radius:999px;margin-bottom:1.2rem;
}
.article-hero h1{
  color:#fff;font-size:clamp(2rem,4vw,3.2rem);line-height:1.35;max-width:960px;margin:0 0 1.2rem;letter-spacing:.01em;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:.6rem .9rem;align-items:center;
  color:rgba(255,255,255,.82);font-size:.93rem;
}
.meta-item{display:inline-flex;align-items:center;gap:.42rem}
.meta-item i{color:var(--bsh-copper-soft)}
.article-categ{
  display:inline-flex;align-items:center;padding:.2rem .75rem;border-radius:999px;
  background:rgba(198,160,98,.2);border:1px solid rgba(198,160,98,.35);
  color:var(--bsh-copper-soft);font-size:.85rem;
}

/* Article main */
.article-page-main{padding:0 0 64px;margin-top:-48px;position:relative;z-index:4}
.article-sheet{
  background:#fff;border-radius:var(--bsh-radius-lg);box-shadow:var(--bsh-shadow);
  border:1px solid rgba(227,223,213,.7);
}
.article-body{padding:56px 64px 60px;font-size:1.06rem}
.article-body p{font-size:1.06rem;line-height:1.9;margin:0 0 1.5rem;letter-spacing:.015em}
.article-body a{color:var(--bsh-primary);text-decoration:underline;text-underline-offset:4px}
.article-body a:hover{color:var(--bsh-copper)}
.article-body h2{font-size:1.85rem;padding-top:1.2rem;margin-top:2.2rem;border-top:2px solid var(--bsh-border)}
.article-body h3{font-size:1.45rem;margin-top:1.8rem;color:var(--bsh-primary-deep)}
.article-body h4{font-size:1.2rem;margin-top:1.5rem;color:var(--bsh-primary)}
.article-body img{
  border-radius:14px;margin:1.9rem 0;box-shadow:0 8px 28px rgba(10,53,44,.08);display:block;
}
.article-body blockquote{
  background:rgba(20,92,76,.05);border-left:4px solid var(--bsh-copper);
  padding:1.2rem 1.5rem;border-radius:0 12px 12px 0;margin:1.8rem 0;
  color:#3D4450;font-size:1.02rem;
}
.article-body blockquote p{margin-bottom:0}
.article-body ul,.article-body ol{margin:1.2rem 0 1.6rem;padding-left:1.6rem;color:var(--bsh-ink)}
.article-body li{margin:.35rem 0;line-height:1.85}
.article-body ul li{list-style:disc}
.article-body ul ul li{list-style:circle}
.article-body ol li{list-style:decimal}
.article-body pre{
  background:var(--bsh-primary-deep);color:#E8E2D2;padding:1.3rem 1.5rem;border-radius:12px;
  overflow-x:auto;line-height:1.7;font-size:.92rem;margin:1.8rem 0;
}
.article-body code{background:#ECE9E1;color:var(--bsh-primary);padding:.2rem .5rem;border-radius:6px;font-size:.94em}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:1.8rem 0;font-size:.96rem}
.article-body th,.article-body td{border:1px solid var(--bsh-border);padding:.85rem 1rem;text-align:left;vertical-align:top}
.article-body thead th{background:#F1EFE7;border-bottom:2px solid var(--bsh-border-dark);color:var(--bsh-primary-deep);font-weight:600}
@media (max-width:767.98px){
  .article-body table{display:block;width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .article-body{padding:32px 24px}
}

/* Related / empty state */
.related-section{padding:56px 0 14px;background:transparent}
.related-empty{
  background:#fff;border:1px solid var(--bsh-border);border-radius:var(--bsh-radius-lg);
  box-shadow:var(--bsh-shadow-soft);padding:34px 30px 30px;overflow:hidden;
}
.related-empty h2{font-size:1.6rem;margin-bottom:.7rem}
.rel-img{border-radius:14px;width:100%;object-fit:cover;box-shadow:0 8px 24px rgba(10,53,44,.1)}
.rdot{
  display:inline-block;width:44px;height:4px;border-radius:2px;background:var(--bsh-copper);margin-bottom:1rem;
}
.related-empty .btn{margin-top:.4rem}

/* CTA band */
.cta-band{
  position:relative;margin-top:64px;padding:0 0 64px;
}
.cta-panel{
  position:relative;overflow:hidden;border-radius:20px;background:var(--bsh-primary-deep);
  box-shadow:0 18px 40px rgba(10,53,44,.16);
}
.cta-panel .cta-img-wrap{position:relative;min-height:260px;height:100%;overflow:hidden}
.cta-panel .cta-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.cta-panel .cta-img-wrap:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,53,44,.6),transparent);z-index:1}
.cta-content{padding:48px 52px;color:#fff}
.cta-content .eyebrow{
  display:inline-block;font-size:.82rem;letter-spacing:.16em;color:var(--bsh-copper-soft);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  padding:.3rem .95rem;border-radius:999px;margin-bottom:1.15rem;
}
.cta-content h2{color:#fff;font-size:1.65rem}
.cta-content p{color:rgba(255,255,255,.78);font-size:.98rem}
@media(max-width:767.98px){
  .cta-content{padding:30px 24px}
  .cta-panel .cta-img-wrap{min-height:180px}
}

/* Empty state card */
.notfound-panel{background:#fff;border-radius:18px;box-shadow:var(--bsh-shadow);border:1px solid var(--bsh-border);padding:76px 24px}
.state-icon{
  width:70px;height:70px;margin:0 auto 20px;border-radius:50%;
  background:rgba(20,92,76,.08);color:var(--bsh-primary);display:flex;align-items:center;justify-content:center;font-size:2rem;
}
.state-card h2{font-size:1.7rem;margin-bottom:.6rem}

/* Footer */
.site-footer{background:#13352E;color:#D7E0DB;margin-top:64px}
.footer-top{padding:60px 0 34px}
.footer-brand{display:inline-flex;align-items:center;gap:.6rem;color:#fff;font-family:var(--bsh-serif);font-size:1.28rem;font-weight:700;margin-bottom:1.1rem}
.footer-brand i{color:var(--bsh-copper-soft)}
.footer-desc{color:rgba(230,235,230,.72);font-size:.93rem;line-height:1.85;max-width:340px}
.footer-title{
  color:#fff;font-weight:600;font-size:.98rem;margin-bottom:1rem;
  padding-bottom:.6rem;border-bottom:1px solid rgba(255,255,255,.14);position:relative;
}
.footer-title:after{content:"";position:absolute;left:0;bottom:-1px;width:34px;height:2px;background:var(--bsh-copper)}
.footer-list a{display:inline-block;color:rgba(230,235,230,.7);padding:.24rem 0;font-size:.92rem}
.footer-list a:hover{color:var(--bsh-copper-soft);transform:translateX(3px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;font-size:.88rem;color:rgba(230,235,230,.62)}
.footer-bottom a{color:var(--bsh-copper-soft)}
.footer-bottom a:hover{color:#fff}

/* misc */
.rgap{height:22px;width:100%}
@media(max-width:991.98px){
  .article-page-main{margin-top:-24px}
  .site-footer{margin-top:44px}
  .brand-text{font-size:1.12rem}
}
@media(max-width:767.98px){
  .article-hero{padding:50px 0 84px}
  .article-hero h1{font-size:1.9rem}
  .article-body p{font-size:1.01rem}
  .related-empty{padding:24px 20px}
  .related-empty h2{font-size:1.35rem}
  .footer-bottom{gap:.5rem;text-align:center}
}

.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .4s ease,transform .4s ease}
.js .reveal.visible{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .reveal,.js .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root {
  --bsh-primary: #145C4C;
  --bsh-primary-deep: #0A352C;
  --bsh-primary-soft: rgba(20,92,76,.08);
  --bsh-copper: #C6A062;
  --bsh-copper-light: #D8B989;
  --bsh-paper: #F7F4EE;
  --bsh-paper-deep: #EFEADF;
  --bsh-card-bg: #FFFFFF;
  --bsh-ink: #22231F;
  --bsh-muted: #6B6A63;
  --bsh-border: #E3DFD5;
  --bsh-white: #FFFFFF;
  --bsh-radius-lg: 24px;
  --bsh-radius-md: 16px;
  --bsh-radius-sm: 10px;
  --bsh-radius-pill: 999px;
  --bsh-shadow-sm: 0 6px 20px rgba(10,53,44,.05);
  --bsh-shadow-md: 0 14px 40px rgba(10,53,44,.08);
  --bsh-shadow-copper: 0 10px 28px rgba(198,160,98,.22);
  --bsh-transition: all .28s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--bsh-ink);
  background: var(--bsh-paper);
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color .25s ease;
}

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

.container {
  max-width: 1280px;
}

.section {
  padding: 72px 0;
}

/* 全站导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(255,253,249,.96);
  border-bottom: 1px solid var(--bsh-border);
  backdrop-filter: blur(10px);
}

.navbar {
  min-height: 74px;
  padding-top: .55rem;
  padding-bottom: .55rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  outline: none;
}

.brand-logo:focus-visible,
.brand-logo:focus {
  outline: 2px solid var(--bsh-copper);
  outline-offset: 6px;
  border-radius: 10px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: var(--bsh-primary-deep);
  color: var(--bsh-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  box-shadow: 0 6px 16px rgba(10,53,44,.16);
}

.brand-text {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--bsh-ink);
  white-space: nowrap;
}

.site-header .navbar-nav {
  gap: .1rem;
}

.navbar-nav .nav-link {
  padding: .6rem 1rem;
  font-size: .96rem;
  font-weight: 500;
  color: var(--bsh-ink);
  border-radius: 999px;
  position: relative;
  transition: var(--bsh-transition);
  white-space: nowrap;
}

.navbar-nav .nav-link::after {
  content: "";
  position: absolute;
  right: 1rem;
  left: 1rem;
  bottom: .05rem;
  height: 2px;
  border-radius: 2px;
  background: var(--bsh-copper);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus-visible,
.navbar-nav .nav-link.active {
  color: var(--bsh-primary-deep);
  background: var(--bsh-primary-soft);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  transform: scaleX(1);
}

.navbar-nav .nav-link:focus-visible {
  outline: 2px solid var(--bsh-copper);
  outline-offset: 2px;
}

.site-header .btn-gold,
.btn-gold {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--bsh-copper);
  border: 1px solid var(--bsh-copper);
  color: var(--bsh-white);
  padding: .6rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--bsh-transition);
  box-shadow: var(--bsh-shadow-copper);
  white-space: nowrap;
}

.site-header .btn-gold:hover,
.site-header .btn-gold:focus,
.btn-gold:hover,
.btn-gold:focus {
  background: var(--bsh-copper-light);
  border-color: var(--bsh-copper-light);
  color: var(--bsh-white);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(198,160,98,.3);
}

.site-header .btn-gold:focus-visible,
.btn-gold:focus-visible {
  outline: 2px solid var(--bsh-primary);
  outline-offset: 3px;
}

.navbar-toggler {
  border: 1px solid var(--bsh-border);
  border-radius: 10px;
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.navbar-toggler:focus,
.navbar-toggler:focus-visible {
  box-shadow: 0 0 0 3px rgba(198,160,98,.3);
  outline: none;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(10,53,44,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  width: 1.2em;
  height: 1.2em;
}

/* Page Hero */
.page-hero {
  position: relative;
  color: var(--bsh-white);
  background: url("/assets/images/backpic/back-1.png") center center / cover no-repeat var(--bsh-primary-deep);
  isolation: isolate;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(100deg, rgba(10,53,44,.92) 0%, rgba(10,53,44,.76) 58%, rgba(20,92,76,.52) 100%);
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -110px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(198,160,98,.16);
  filter: blur(2px);
  z-index: -1;
}

.page-hero .hero-wrap {
  padding: 88px 0 92px;
}

.page-hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.22);
  color: #F3E7D4;
  padding: .4rem 1rem;
  border-radius: 999px;
  font-size: .84rem;
  font-weight: 500;
  letter-spacing: .02em;
  margin-bottom: 1.25rem;
}

.page-hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: .01em;
  max-width: 920px;
}

.page-hero .hero-lead {
  max-width: 720px;
  color: rgba(255,255,255,.86);
  font-size: 1.06rem;
  margin-top: 1rem;
  line-height: 1.9;
}

.page-hero .hero-breadcrumb {
  font-size: .9rem;
  color: rgba(255,255,255,.68);
  margin-bottom: 1rem;
}

.page-hero .hero-breadcrumb a {
  color: rgba(255,255,255,.9);
  border-bottom: 1px solid rgba(255,255,255,.35);
}

.page-hero .hero-breadcrumb a:hover {
  color: var(--bsh-copper-light);
}

/* 通用区块标题 */
.section-head {
  margin-bottom: 32px;
}

.section-head .sec-flag {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .82rem;
  letter-spacing: .08em;
  color: var(--bsh-primary);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: .5rem;
}

.section-head .sec-flag i {
  color: var(--bsh-copper);
}

.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--bsh-ink);
  margin-bottom: .6rem;
}

.section-head .sec-desc {
  color: var(--bsh-muted);
  max-width: 760px;
  line-height: 1.85;
}

/* 内容区 / 卡片 */
.content-card {
  background: var(--bsh-card-bg);
  border: 1px solid rgba(227,223,213,.8);
  border-radius: var(--bsh-radius-md);
  box-shadow: var(--bsh-shadow-sm);
  padding: 30px;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  height: 100%;
}

.content-card:hover {
  transform: translateY(-4px);
  border-color: rgba(198,160,98,.45);
  box-shadow: var(--bsh-shadow-md);
}

.card-media {
  border-radius: 14px;
  overflow: hidden;
  background: var(--bsh-paper-deep);
  height: 100%;
  min-height: 240px;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}

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

.card-tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: var(--bsh-primary-soft);
  color: var(--bsh-primary-deep);
  border-radius: 999px;
  padding: .26rem .9rem;
  font-size: .8rem;
  font-weight: 600;
  margin-bottom: .8rem;
}

.content-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: .8rem;
}

.content-card p {
  color: var(--bsh-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.mini-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 .2rem;
}

.mini-list li {
  display: flex;
  gap: .55rem;
  padding: .35rem 0;
  color: var(--bsh-muted);
  font-size: .95rem;
  line-height: 1.7;
}

.mini-list li i {
  color: var(--bsh-copper);
  margin-top: .3rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-weight: 600;
  color: var(--bsh-primary);
}

.text-link i {
  transition: transform .25s ease;
}

.text-link:hover {
  color: var(--bsh-copper);
}

.text-link:hover i {
  transform: translateX(4px);
}

/* 右侧信息组件 */
.aside-group {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.side-card {
  background: var(--bsh-paper);
  border: 1px solid var(--bsh-border);
  border-radius: var(--bsh-radius-md);
  padding: 26px;
  box-shadow: var(--bsh-shadow-sm);
}

.side-card .side-title {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--bsh-ink);
}

.side-card .side-title i {
  color: var(--bsh-primary);
  border-radius: 8px;
  font-size: .95rem;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bsh-primary-soft);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

.tag-cloud a {
  background: var(--bsh-white);
  border: 1px solid var(--bsh-border);
  border-radius: 999px;
  padding: .42rem 1rem;
  font-size: .85rem;
  color: var(--bsh-muted);
  transition: var(--bsh-transition);
}

.tag-cloud a:hover {
  color: var(--bsh-white);
  background: var(--bsh-primary);
  border-color: var(--bsh-primary);
}

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

.quick-list li + li {
  border-top: 1px dashed var(--bsh-border);
}

.quick-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem .15rem;
  font-size: .95rem;
  font-weight: 500;
  color: var(--bsh-ink);
  transition: var(--bsh-transition);
}

.quick-list a i {
  color: var(--bsh-copper);
  transition: transform .25s ease;
}

.quick-list a:hover {
  color: var(--bsh-primary);
}

.quick-list a:hover i {
  transform: translateX(5px);
}

.side-photo {
  border-radius: 14px;
  overflow: hidden;
  min-height: 180px;
}

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

.sticky-side {
  position: sticky;
  top: 100px;
}

/* 服务价值卡片 */
.feature-strip {
  background: var(--bsh-white);
  border-top: 1px solid var(--bsh-border);
  border-bottom: 1px solid var(--bsh-border);
}

.feature-card {
  background: var(--bsh-paper);
  border: 1px solid transparent;
  border-radius: var(--bsh-radius-md);
  padding: 28px 26px;
  height: 100%;
  transition: var(--bsh-transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--bsh-primary), var(--bsh-copper));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s ease;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  background: var(--bsh-white);
  border-color: rgba(198,160,98,.35);
  box-shadow: var(--bsh-shadow-md);
  transform: translateY(-4px);
}

.feature-card .feat-icon {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bsh-primary-deep);
  color: var(--bsh-white);
  border-radius: 16px;
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: .55rem;
}

.feature-card p {
  color: var(--bsh-muted);
  font-size: .96rem;
  line-height: 1.8;
  margin: 0;
}

/* 流程区 */
.process-section {
  background: var(--bsh-paper);
  position: relative;
}

.process-card {
  text-align: center;
  position: relative;
  padding: 16px 10px;
  height: 100%;
}

.process-card .step-no {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--bsh-primary-deep);
  color: var(--bsh-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 0 0 8px rgba(20,92,76,.12);
  margin-bottom: 1.1rem;
}

.process-card h3 {
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: .55rem;
}

.process-card p {
  color: var(--bsh-muted);
  font-size: .95rem;
  line-height: 1.8;
  margin: 0;
  max-width: 260px;
  margin-inline: auto;
}

.process-arrow {
  display: none;
}

@media (min-width: 992px) {
  .process-card {
    position: relative;
  }

  .process-card:not(:last-child)::after {
    content: "\F138";
    font-family: "bootstrap-icons";
    position: absolute;
    top: 28px;
    right: -18px;
    color: var(--bsh-copper);
    font-size: 1.25rem;
    z-index: 2;
  }
}

/* FAQ */
.faq-list .accordion-item {
  background: transparent;
  border: 0;
}

.faq-list .accordion-button {
  background: var(--bsh-white);
  border-radius: 14px !important;
  box-shadow: none;
  color: var(--bsh-ink);
  font-weight: 600;
  font-size: 1.02rem;
  padding: 1.25rem 1.5rem;
  transition: var(--bsh-transition);
  position: relative;
}

.faq-list .accordion-button:hover {
  color: var(--bsh-primary-deep);
  background: #fffefb;
}

.faq-list .accordion-button:not(.collapsed) {
  background: var(--bsh-primary-deep);
  color: var(--bsh-white);
}

.faq-list .accordion-button:focus,
.faq-list .accordion-button:focus-visible {
  box-shadow: 0 0 0 3px rgba(198,160,98,.4);
  outline: none;
}

.faq-list .accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23C6A062'%3e%3cpath fill-rule='evenodd' d='M8 0a1 1 0 0 1 1 1v6h6a1 1 0 1 1 0 2H9v6a1 1 0 1 1-2 0V9H1a1 1 0 0 1 0-2h6V1a1 1 0 0 1 1-1z'/%3e%3c/svg%3e");
  background-size: 1rem;
  transition: transform .3s ease;
}

.faq-list .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='%23fff'%3e%3cpath fill-rule='evenodd' d='M0 8a1 1 0 0 1 1-1h14a1 1 0 1 1 0 2H1a1 1 0 0 1-1-1z'/%3e%3c/svg%3e");
}

.faq-list .accordion-body {
  background: var(--bsh-white);
  color: var(--bsh-muted);
  border-radius: 0 0 14px 14px;
  padding: 1.1rem 1.5rem 1.35rem;
  line-height: 1.85;
}

/* CTA */
.cta-section {
  padding: 76px 0;
  position: relative;
  background: url("/assets/images/backpic/back-2.png") center center / cover no-repeat var(--bsh-primary-deep);
  isolation: isolate;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10,53,44,.94) 0%, rgba(10,53,44,.82) 55%, rgba(20,92,76,.62) 100%);
  z-index: -1;
}

.cta-card {
  background: var(--bsh-white);
  border-radius: 28px;
  padding: 32px;
  color: var(--bsh-ink);
  box-shadow: var(--bsh-shadow-md);
}

.cta-card .cta-caption {
  font-size: .84rem;
  color: var(--bsh-copper);
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.cta-card h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 700;
  line-height: 1.35;
  margin-top: .7rem;
}

.cta-card .cta-desc {
  color: var(--bsh-muted);
  margin-top: .6rem;
  line-height: 1.85;
}

.contact-meta {
  margin-top: 1.3rem;
  display: flex;
  flex-direction: column;
  gap: .65rem;
}

.contact-meta div {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: var(--bsh-muted);
  font-size: .96rem;
}

.contact-meta div i {
  color: var(--bsh-primary);
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bsh-primary-soft);
  border-radius: 50%;
}

.form-control,
.form-select {
  background-color: #FAF8F2;
  border: 1px solid transparent;
  border-bottom: 2px solid var(--bsh-border);
  border-radius: 12px 12px 4px 4px;
  padding: .85rem 1rem;
  color: var(--bsh-ink);
  transition: var(--bsh-transition);
}

.form-control:focus,
.form-select:focus {
  background-color: var(--bsh-white);
  border: 1px solid rgba(198,160,98,.3);
  border-bottom: 2px solid var(--bsh-primary);
  box-shadow: 0 6px 18px rgba(10,53,44,.06);
  outline: none;
}

.form-label {
  font-weight: 600;
  font-size: .92rem;
  color: var(--bsh-ink);
  margin-bottom: .35rem;
}

.btn-submit {
  background: var(--bsh-primary-deep);
  color: var(--bsh-white);
  padding: .9rem 1.5rem;
  border-radius: 999px;
  border: 0;
  font-weight: 600;
  transition: var(--bsh-transition);
  position: relative;
  overflow: hidden;
  width: 100%;
}

.btn-submit:hover {
  background: var(--bsh-primary);
  color: var(--bsh-white);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(20,92,76,.22);
}

.btn-submit:focus-visible {
  outline: 2px solid var(--bsh-copper);
  outline-offset: 4px;
}

.btn-submit::before {
  content: "";
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(198,160,98,.45), transparent);
  transform: skewX(-20deg);
  transition: left .5s ease;
}

.btn-submit:hover::before {
  left: 120%;
}

.form-note {
  font-size: .84rem;
  color: rgba(255,255,255,.7);
  text-align: center;
  margin-top: .75rem;
}

@media (min-width: 768px) {
  .cta-section .cta-card {
    padding: 50px;
  }
}

/* 页脚 */
.site-footer {
  background: var(--bsh-primary-deep);
  color: rgba(255,255,255,.78);
  border-top: 4px solid var(--bsh-copper);
}

.footer-top {
  padding: 60px 0 38px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--bsh-white);
  margin-bottom: .8rem;
}

.footer-brand i {
  width: 40px;
  height: 40px;
  background: var(--bsh-copper);
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--bsh-primary-deep);
}

.footer-desc {
  color: rgba(255,255,255,.72);
  font-size: .92rem;
  line-height: 1.85;
  max-width: 360px;
  margin: 0;
}

.footer-title {
  color: var(--bsh-white);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.footer-list a {
  color: rgba(255,255,255,.7);
  font-size: .93rem;
  transition: var(--bsh-transition);
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}

.footer-list a:hover {
  color: var(--bsh-copper-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 18px 0;
  font-size: .88rem;
  color: rgba(255,255,255,.55);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .65s ease, transform .65s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* 响应式 */
@media (max-width: 991.98px) {
  .navbar-nav {
    padding-top: .8rem;
    gap: .2rem;
  }

  .site-header .navbar-nav .nav-link {
    padding: .6rem 1rem;
  }

  .site-header .btn-gold {
    margin-top: .8rem;
    width: 100%;
    justify-content: center;
  }

  .navbar-collapse {
    background: #FFFDF9;
    border-radius: 0 0 16px 16px;
    padding: 0 12px 18px;
    border-bottom: 1px solid var(--bsh-border);
  }

  .section {
    padding: 56px 0;
  }

  .aside-group {
    margin-top: 8px;
  }

  .contact-meta {
    margin-bottom: 12px;
  }
}

@media (max-width: 767.98px) {
  .page-hero .hero-wrap {
    padding: 60px 0 68px;
  }

  .content-card {
    padding: 22px;
  }

  .card-media {
    min-height: 200px;
    max-height: 320px;
  }

  .footer-top {
    padding-top: 44px;
  }
}

@media (max-width: 575.98px) {
  .section {
    padding: 44px 0;
  }

  .footer-top .col-6 {
    padding-bottom: 1rem;
  }

  .cta-card {
    padding: 24px;
  }

  .content-card h3 {
    font-size: 1.15rem;
  }

  .page-hero h1 {
    font-size: 1.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* roulang page: category3 */
:root {
  --bsh-primary: #145C4C;
  --bsh-primary-deep: #0A352C;
  --bsh-copper: #C6A062;
  --bsh-copper-deep: #A98345;
  --bsh-paper: #F7F4EE;
  --bsh-card-bg: #FFFFFF;
  --bsh-ink: #22231F;
  --bsh-muted: #6B6A63;
  --bsh-border: #E3DFD5;
  --bsh-shadow: 0 10px 30px rgba(10, 53, 44, 0.06);
  --bsh-shadow-hover: 0 18px 40px rgba(10, 53, 44, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  overflow-x: hidden;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--bsh-paper);
  color: var(--bsh-ink);
  line-height: 1.75;
}

img {
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 1280px;
}

.font-serif {
  font-family: Georgia, "Noto Serif SC", "Songti SC", "SimSun", serif;
}

.text-muted {
  color: var(--bsh-muted) !important;
}

.btn {
  border-radius: var(--bsh-radius-sm);
  padding: 0.7rem 1.5rem;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-gold {
  background: var(--bsh-copper);
  border: 1px solid var(--bsh-copper);
  color: #fff;
}

.btn-gold:hover {
  background: var(--bsh-copper-deep);
  border-color: var(--bsh-copper-deep);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(166, 133, 71, 0.25);
}

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

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

.btn-outline-light {
  border: 1px solid rgba(255, 255, 255, 0.7);
  color: #fff;
  border-radius: 999px;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border-color: #fff;
}

.btn:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible {
  outline: 2px solid var(--bsh-copper);
  outline-offset: 2px;
  box-shadow: none;
}

/* ========== Header 导航 ========== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--bsh-border);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  padding: 0.55rem 0;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--bsh-primary-deep);
  letter-spacing: -0.02em;
}

.brand-logo:hover {
  color: var(--bsh-primary);
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--bsh-primary-deep);
  color: var(--bsh-copper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.navbar-nav .nav-link {
  font-weight: 600;
  color: var(--bsh-ink);
  padding: 0.6rem 0.9rem;
  margin: 0 0.2rem;
  position: relative;
  border-radius: 999px;
  font-size: 1rem;
}

.navbar-nav .nav-link:hover {
  background: rgba(20, 92, 76, 0.06);
  color: var(--bsh-primary);
}

.navbar-nav .nav-link.active {
  color: var(--bsh-primary);
  background: rgba(20, 92, 76, 0.09);
}

.navbar-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 22px;
  height: 2px;
  background: var(--bsh-copper);
  border-radius: 999px;
  transform: translateX(-50%);
}

.navbar-toggler {
  border-color: transparent;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(10,53,44,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ========== 分类页 Hero ========== */
.category-hero {
  position: relative;
  padding: 112px 0 96px;
  background:
    linear-gradient(135deg, rgba(10, 53, 44, 0.72) 0%, rgba(20, 92, 76, 0.55) 60%, rgba(20, 92, 76, 0.32) 100%),
    url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  color: #fff;
  text-align: center;
  border-bottom: 4px solid var(--bsh-copper);
}

.category-hero .hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 0.42rem 1.1rem;
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  color: #F5E8D5;
  margin-bottom: 1.5rem;
}

.category-hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.22;
  margin-bottom: 1.2rem;
  letter-spacing: -0.02em;
}

.category-hero .hero-lead {
  max-width: 720px;
  margin: 0 auto 24px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.06rem;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
}

.btn-media {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* ========== 指标带 ========== */
.stats-band {
  position: relative;
  z-index: 4;
  margin-top: -42px;
  margin-bottom: 20px;
}

.stats-card {
  background: #fff;
  border: 1px solid rgba(227, 223, 213, 0.8);
  border-radius: 16px;
  box-shadow: var(--bsh-shadow);
  padding: 1.35rem 1rem;
  text-align: center;
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease;
}

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

.stats-number {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--bsh-primary);
  line-height: 1.2;
}

.stats-label {
  color: var(--bsh-muted);
  font-size: 0.9rem;
  margin-top: 0.2rem;
}

/* ========== 分类主体 ========== */
.category-content {
  padding: 88px 0 60px;
}

.card-case {
  background: #fff;
  border: 1px solid rgba(227, 223, 213, 0.7);
  border-radius: 18px;
  overflow: hidden;
  margin-bottom: 30px;
  box-shadow: var(--bsh-shadow);
}

.card-case .case-image {
  height: 100%;
  min-height: 240px;
}

.card-case .case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 240px;
}

.case-body {
  padding: 32px;
}

.eyebrow-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--bsh-copper-deep);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.7rem;
}

.card-case h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--bsh-ink);
  margin-bottom: 0.9rem;
  line-height: 1.4;
}

.card-case .lead-text {
  color: var(--bsh-muted);
  margin-bottom: 1.2rem;
}

.bar-group {
  margin-top: 18px;
}

.bar-group .bar-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.93rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.bar-track {
  height: 8px;
  background: #EDEBE4;
  border-radius: 999px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--bsh-primary), #2A7A68);
}

.bar-fill.bar-copper {
  background: linear-gradient(90deg, var(--bsh-copper), #D9BE8B);
}

.bar-fill.bar-dark {
  background: var(--bsh-primary-deep);
}

/* 对照模块 */
.compare-list .compare-item {
  margin-bottom: 0.95rem;
}

.compare-list .compare-head {
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--bsh-ink);
}

.compare-list .compare-head span {
  color: var(--bsh-primary);
  font-weight: 800;
}

/* ========== 侧栏 ========== */
.aside-card {
  background: #fff;
  border: 1px solid rgba(227, 223, 213, 0.5);
  border-radius: 16px;
  box-shadow: var(--bsh-shadow);
  padding: 26px;
  margin-bottom: 28px;
}

.aside-card .aside-kicker {
  font-size: 0.82rem;
  color: var(--bsh-copper-deep);
  font-weight: 700;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 4px;
}

.aside-card h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

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

.side-links li {
  margin-bottom: 6px;
}

.side-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.58rem 0.85rem;
  border: 1px solid var(--bsh-border);
  border-radius: 10px;
  color: var(--bsh-ink);
  font-weight: 600;
  transition: all .25s ease;
}

.side-links a:hover {
  background: rgba(20, 92, 76, 0.06);
  color: var(--bsh-primary);
  border-color: var(--bsh-primary);
}

.side-links a.active-side {
  background: var(--bsh-primary-deep);
  color: #fff;
  border-color: var(--bsh-primary-deep);
}

.aside-card .aside-list {
  padding-left: 1.1rem;
  margin-bottom: 0;
}

.aside-card .aside-list li {
  color: var(--bsh-muted);
  margin-bottom: 0.4rem;
  font-size: 0.95rem;
}

.aside-card .aside-img {
  width: 100%;
  border-radius: 12px;
  height: 140px;
  object-fit: cover;
  margin-bottom: 0.8rem;
}

.note-panel {
  background: var(--bsh-paper);
  border-left: 3px solid var(--bsh-copper);
  padding: 1rem 1.2rem;
  border-radius: 0 12px 12px 0;
  font-size: 0.93rem;
  color: var(--bsh-muted);
}

/* ========== FAQ ========== */
.faq-section {
  padding: 90px 0 90px;
  background: #F1EEE6;
  border-top: 1px solid var(--bsh-border);
  border-bottom: 1px solid var(--bsh-border);
}

.section-heading h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}

.section-heading .heading-sub {
  color: var(--bsh-muted);
  max-width: 720px;
}

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

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

.accordion-button {
  background: transparent;
  border-radius: 0 !important;
  padding: 1.25rem 2.5rem 1.25rem 0.2rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--bsh-ink);
  box-shadow: none !important;
  position: relative;
}

.accordion-button::after {
  content: "+";
  background: none;
  font-size: 1.9rem;
  font-weight: 400;
  width: auto;
  height: auto;
  margin-left: auto;
  color: var(--bsh-primary);
  line-height: 1;
}

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

.accordion-button:not(.collapsed)::after {
  content: "−";
  font-size: 1.9rem;
  color: var(--bsh-primary);
}

.accordion-body {
  padding: 0 0.2rem 1.5rem;
  color: var(--bsh-muted);
  max-width: 880px;
}

/* ========== CTA ========== */
.cta-wrap {
  padding: 96px 0;
}

.cta-panel {
  background:
    linear-gradient(120deg, rgba(10, 53, 44, 0.96) 0%, rgba(15, 71, 59, 0.88) 55%, rgba(20, 92, 76, 0.82) 100%),
    url('/assets/images/backpic/back-1.png') right center / cover no-repeat;
  border-radius: 20px;
  color: #fff;
  padding: 56px;
  box-shadow: 0 24px 60px rgba(10, 53, 44, 0.28);
  position: relative;
  overflow: hidden;
}

.cta-panel h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.cta-panel p {
  color: rgba(255, 255, 255, 0.78);
}

.contact-methods i {
  color: var(--bsh-copper);
  margin-right: 0.5rem;
}

.contact-methods .method-line {
  margin-bottom: 0.55rem;
}

.cta-form {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  padding: 26px;
  backdrop-filter: blur(4px);
}

.cta-form .form-label {
  color: #E9E1D3;
  font-weight: 600;
}

.cta-form .form-control,
.cta-form .form-select {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: #fff;
  padding: 0.7rem 1rem;
}

.cta-form .form-control::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.cta-form .form-control:focus,
.cta-form .form-select:focus {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.55);
  color: #fff;
}

.cta-form .form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23ffffff'%3e%3cpath fill-rule='evenodd' d='M1.647 4.697a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.cta-form .form-select option {
  color: var(--bsh-ink);
  background: #fff;
}

.cta-form .btn-gold {
  width: 100%;
  padding: 0.85rem 1.5rem;
  font-size: 1.02rem;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--bsh-primary-deep);
  color: rgba(255, 255, 255, 0.65);
}

.footer-top {
  padding: 64px 0 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #fff;
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.footer-brand i {
  color: var(--bsh-copper);
}

.footer-desc {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.94rem;
  margin-bottom: 1.4rem;
}

.footer-title {
  color: #fff;
  font-weight: 700;
  margin-bottom: 1rem;
  position: relative;
  padding-bottom: 0.4rem;
}

.footer-title::after {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--bsh-copper);
  display: block;
  margin-top: 0.35rem;
  border-radius: 999px;
}

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

.footer-list li {
  margin-bottom: 0.55rem;
}

.footer-list a {
  color: rgba(255, 255, 255, 0.58);
  transition: color .25s ease;
  display: inline-block;
}

.footer-list a:hover {
  color: var(--bsh-copper);
  transform: translateX(3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.3rem 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.45);
}

/* ========== Reveal ========== */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: none;
}

/* ========== Responsive ========== */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: #FFFFFF;
    border-radius: 14px;
    padding: 18px 16px;
    margin-top: 12px;
    box-shadow: 0 14px 30px rgba(10, 53, 44, 0.1);
  }

  .navbar-nav .nav-link {
    border-radius: 8px;
  }

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

@media (max-width: 767.98px) {
  .category-hero {
    padding: 80px 0 72px;
  }

  .category-hero h1 {
    font-size: 1.85rem;
  }

  .stats-band {
    margin-top: -28px;
  }

  .category-content {
    padding-top: 60px;
  }

  .case-body {
    padding: 24px;
  }

  .faq-section,
  .cta-wrap {
    padding: 70px 0;
  }

  .site-footer .footer-list {
    margin-bottom: 1.2rem;
  }
}

@media (max-width: 575.98px) {
  .category-hero .hero-lead {
    font-size: 0.98rem;
  }

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

  .cta-form {
    margin-top: 2rem;
  }
}

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

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* roulang page: category4 */
:root {
  --bsh-primary: #145C4C;
  --bsh-primary-deep: #0A352C;
  --bsh-primary-soft: #DCEAE4;
  --bsh-copper: #C6A062;
  --bsh-copper-light: #E8D5B2;
  --bsh-paper: #F7F4EE;
  --bsh-card-bg: #FFFFFF;
  --bsh-ink: #22231F;
  --bsh-muted: #6B6A63;
  --bsh-border: #E3DFD5;
  --bsh-radius-sm: 10px;
  --bsh-radius-lg: 16px;
  --bsh-shadow: 0 10px 30px rgba(10, 53, 44, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bsh-paper);
  color: var(--bsh-ink);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--bsh-primary);
  text-decoration: none;
  transition: color .25s ease;
}

a:hover,
a:focus-visible {
  color: var(--bsh-primary-deep);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--bsh-copper);
  outline-offset: 3px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Noto Serif SC", "Songti SC", serif;
  color: var(--bsh-ink);
  line-height: 1.35;
}

.section {
  padding: 76px 0;
}

.section-head {
  margin-bottom: 34px;
}

.eyebrow {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--bsh-primary);
  background: var(--bsh-primary-soft);
  padding: .3rem .8rem;
  border-radius: 999px;
  margin-bottom: 12px;
  font-weight: 700;
}

h2.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  margin-bottom: .5rem;
}

.text-lead {
  color: var(--bsh-muted);
  font-size: 1rem;
  max-width: 640px;
}

/* Buttons */
.btn {
  border-radius: 8px;
  font-weight: 600;
  letter-spacing: .02em;
  transition: all .3s ease;
}

.btn-gold {
  background: var(--bsh-copper);
  color: #fff;
  border: 1px solid var(--bsh-copper);
  padding: .58rem 1.35rem;
  border-radius: 999px;
}

.btn-gold:hover,
.btn-gold:focus {
  background: var(--bsh-primary-deep);
  border-color: var(--bsh-primary-deep);
  color: #fff;
}

.btn-deep {
  background: var(--bsh-primary-deep);
  color: #fff;
  border: 1px solid var(--bsh-primary-deep);
  padding: .62rem 1.5rem;
  position: relative;
  overflow: hidden;
}

.btn-deep:hover {
  background: var(--bsh-primary);
  color: #fff;
}

.btn-outline-ink {
  background: transparent;
  border: 1px solid var(--bsh-primary);
  color: var(--bsh-primary-deep);
  padding: .58rem 1.35rem;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background: rgba(247, 244, 238, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(227, 223, 213, .8);
}

.site-header .navbar {
  padding-top: .8rem;
  padding-bottom: .8rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  font-weight: 700;
  color: var(--bsh-primary-deep);
}

.brand-mark {
  width: 38px;
  height: 38px;
  background: var(--bsh-primary-deep);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 1.05rem;
  transform: rotate(-4deg);
}

.brand-text {
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-size: 1.07rem;
  font-weight: 700;
  letter-spacing: .02em;
}

.navbar .nav-link {
  position: relative;
  color: var(--bsh-ink);
  font-weight: 500;
  padding: .55rem 1rem;
  margin: 0 .1rem;
  border-radius: 999px;
  white-space: nowrap;
}

.navbar .nav-link.active {
  color: var(--bsh-primary-deep);
  background: rgba(20, 92, 76, .1);
}

.navbar .nav-link.active::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: .28rem;
  height: 2px;
  border-radius: 99px;
  background: var(--bsh-copper);
}

.navbar .nav-link:hover {
  color: var(--bsh-primary);
  background: rgba(20, 92, 76, .06);
}

.navbar-toggler {
  border: 1px solid var(--bsh-border);
  border-radius: 10px;
  padding: .35rem .6rem;
}

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

/* Help Hero */
.help-hero {
  color: #fff;
  padding: 84px 0 90px;
  background:
    linear-gradient(112deg, rgba(10, 53, 44, .96) 0%, rgba(20, 92, 76, .84) 52%, rgba(20, 92, 76, .66) 100%),
    url('/assets/images/backpic/back-1.png') center / cover no-repeat;
}

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

.hero-breadcrumb {
  font-size: .9rem;
  color: rgba(255, 255, 255, .7);
  margin-bottom: 24px;
}

.hero-breadcrumb a {
  color: rgba(255, 255, 255, .85);
  text-decoration: none;
}

.hero-breadcrumb a:hover {
  color: var(--bsh-copper-light);
}

.hero-breadcrumb span {
  margin: 0 .35rem;
  color: rgba(255, 255, 255, .45);
}

.hero-mini-label {
  display: inline-block;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .14em;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .22);
  padding: .25rem .95rem;
  border-radius: 999px;
  margin-bottom: 18px;
}

.help-hero h1 {
  color: #fff;
  font-size: clamp(1.85rem, 4vw, 2.9rem);
  font-weight: 700;
  max-width: 860px;
  margin-bottom: 18px;
}

.help-hero .hero-lead {
  color: rgba(255, 255, 255, .84);
  font-size: 1.08rem;
  max-width: 720px;
  margin-bottom: 30px;
}

.hero-tip-line {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-tip-line span {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(255, 255, 255, .1);
  padding: .42rem .8rem;
  border-radius: 999px;
  font-size: .86rem;
  color: rgba(255, 255, 255, .9);
}

/* Quick card */
.quick-card {
  background: var(--bsh-card-bg);
  border: 1px solid var(--bsh-border);
  border-radius: 14px;
  padding: 26px 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform .35s ease, box-shadow .35s ease;
}

.quick-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(10, 53, 44, .07);
}

.quick-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bsh-primary-soft);
  color: var(--bsh-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 15px;
}

.quick-card h3 {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: .35rem;
}

.quick-card p {
  color: var(--bsh-muted);
  font-size: .93rem;
  line-height: 1.7;
  margin-bottom: 1rem;
  flex: 1;
}

.quick-card a {
  font-weight: 600;
  font-size: .9rem;
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  border-bottom: 1px solid transparent;
}

.quick-card a:hover {
  border-color: var(--bsh-copper);
  color: var(--bsh-primary-deep);
}

.section-help-main {
  background: #fff;
  border-top: 1px solid var(--bsh-border);
  border-bottom: 1px solid var(--bsh-border);
}

/* Help doc card */
.help-doc-card {
  background: var(--bsh-card-bg);
  border: 1px solid var(--bsh-border);
  border-radius: var(--bsh-radius-lg);
  overflow: hidden;
  box-shadow: var(--bsh-shadow);
  margin-bottom: 32px;
}

.help-doc-media {
  overflow: hidden;
  max-height: 250px;
}

.help-doc-media img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.help-doc-body {
  padding: 30px;
}

.help-doc-body .eyebrow {
  margin-bottom: 10px;
}

.help-doc-body h3 {
  font-size: 1.32rem;
  margin-bottom: 10px;
  font-weight: 700;
}

.help-doc-body p {
  color: var(--bsh-muted);
}

.check-list-mini {
  list-style: none;
  padding-left: 0;
  margin: 18px 0 0;
}

.check-list-mini li {
  display: flex;
  gap: .6rem;
  align-items: flex-start;
  padding: .45rem 0;
  color: var(--bsh-ink);
  font-size: .95rem;
}

.check-list-mini li i {
  color: var(--bsh-primary);
  padding-top: .2rem;
}

.chip-list .chip {
  display: inline-block;
  border-radius: 999px;
  background: var(--bsh-primary-soft);
  color: var(--bsh-primary-deep);
  font-size: .83rem;
  padding: .28rem .9rem;
}

/* Aside */
.aside-card {
  background: var(--bsh-card-bg);
  border: 1px solid var(--bsh-border);
  border-radius: var(--bsh-radius-sm);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 6px 20px rgba(10, 53, 44, .03);
}

.aside-card-title {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--bsh-primary-deep);
  margin-bottom: .8rem;
}

.aside-card p {
  color: var(--bsh-muted);
  font-size: .93rem;
}

.aside-card ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.aside-card ul li {
  padding: .4rem 0;
  border-bottom: 1px solid rgba(227, 223, 213, .5);
  font-size: .92rem;
}

.aside-card ul li:last-child {
  border-bottom: 0;
}

.aside-card ul li a {
  color: var(--bsh-ink);
}

.aside-card ul li a:hover {
  color: var(--bsh-primary);
}

.support-time {
  display: flex;
  gap: .6rem;
  align-items: flex-start;
}

.support-time i {
  color: var(--bsh-copper);
  font-size: 1.05rem;
  line-height: 1.6;
}

.support-time strong {
  color: var(--bsh-ink);
}

.support-time p {
  color: var(--bsh-muted);
  font-size: .9rem;
}

/* checklist */
.diy-checklist {
  background:
    linear-gradient(90deg, rgba(247,244,238,.98) 0%, rgba(247,244,238,.92) 100%),
    radial-gradient(circle at 90% 20%, rgba(198,160,98,.16), transparent 320px);
}

.checklist-card {
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--bsh-border);
  padding: 24px;
  box-shadow: var(--bsh-shadow);
}

.checklist-card h3 {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--bsh-ink);
  margin-bottom: 14px;
}

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

.checklist-card ul li {
  position: relative;
  padding: .45rem 0 .55rem 34px;
  border-bottom: 1px dashed rgba(227, 223, 213, .85);
  color: var(--bsh-ink);
  font-size: .94rem;
  line-height: 1.65;
}

.checklist-card ul li:last-child {
  border-bottom: 0;
}

.checklist-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55rem;
  width: 20px;
  height: 20px;
  border: 1px solid var(--bsh-primary);
  border-radius: 6px;
  background: var(--bsh-primary-soft);
  opacity: .8;
}

.checklist-card ul li::after {
  content: "\2713";
  position: absolute;
  left: 4px;
  top: .44rem;
  color: var(--bsh-primary);
  font-weight: 700;
  font-size: .9rem;
}

/* FAQ */
.faq-panel {
  background: #fff;
  border: 1px solid var(--bsh-border);
  border-radius: var(--bsh-radius-lg);
  padding: 10px 28px;
}

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

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

.accordion-button {
  background: transparent;
  color: var(--bsh-ink);
  font-weight: 700;
  font-size: 1rem;
  padding: 1.15rem 0;
  box-shadow: none;
}

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

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

.accordion-button::after {
  background-image: none;
  content: "+";
  font-family: "Noto Sans SC", sans-serif;
  font-size: 1.7rem;
  line-height: 1;
  color: var(--bsh-copper);
  font-weight: 400;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .25s ease;
}

.accordion-body {
  padding: 0 0 1.25rem;
  color: var(--bsh-muted);
  line-height: 1.85;
}

/* CTA Section */
.cta-card {
  border-radius: var(--bsh-radius-lg);
  background:
    linear-gradient(0deg, rgba(10, 53, 44, .93), rgba(10, 53, 44, .88)),
    url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  color: #fff;
  padding: 3rem;
}

.cta-card .eyebrow {
  background: rgba(255,255,255,.14);
  color: var(--bsh-copper-light);
}

.cta-card h2 {
  color: #fff;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  margin-bottom: .9rem;
}

.cta-card .help-copy {
  color: rgba(255, 255, 255, .86);
  font-size: 1rem;
  max-width: 430px;
  line-height: 1.8;
}

.contact-info-line {
  display: flex;
  align-items: center;
  gap: .7rem;
  color: rgba(255,255,255,.9);
  font-size: .95rem;
  margin-bottom: .65rem;
}

.contact-info-line i {
  color: var(--bsh-copper);
}

.cta-widget {
  background: #fff;
  border-radius: 14px;
  padding: 24px;
}

.cta-widget .form-label {
  color: var(--bsh-ink);
  font-weight: 600;
  font-size: .9rem;
}

.cta-widget .form-control,
.cta-widget .form-select {
  border: 1px solid var(--bsh-border);
  border-radius: 10px;
  padding: .65rem .9rem;
  color: var(--bsh-ink);
  font-size: .92rem;
  transition: border-color .25s ease, box-shadow .25s ease;
}

.cta-widget .form-control:focus,
.cta-widget .form-select:focus {
  border-color: var(--bsh-primary);
  box-shadow: none;
  outline: 0;
}

textarea.form-control {
  min-height: 108px;
}

/* Footer */
.site-footer {
  background: var(--bsh-primary-deep);
  color: rgba(255,255,255,.8);
  margin-top: 0;
}

.footer-top {
  padding: 58px 0 40px;
}

.site-footer .footer-brand {
  font-size: 1.08rem;
  font-weight: 700;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.site-footer .footer-brand i {
  color: var(--bsh-copper);
  font-size: 1.2rem;
}

.footer-desc {
  color: rgba(255,255,255,.65);
  font-size: .92rem;
  margin-top: 16px;
  max-width: 330px;
}

.footer-title {
  color: var(--bsh-copper-light);
  font-size: .88rem;
  font-weight: 700;
  letter-spacing: .08em;
  margin-bottom: 14px;
}

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

.footer-list li + li {
  margin-top: .35rem;
}

.footer-list a {
  color: rgba(255,255,255,.75);
  font-size: .9rem;
  display: inline-block;
  padding: .12rem 0;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.footer-list a:hover {
  color: #fff;
  border-color: var(--bsh-copper);
}

.footer-bottom {
  background: rgba(0,0,0,.14);
  padding: 14px 0;
  border-top: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.55);
  font-size: .82rem;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .5s ease, transform .5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Tablet */
@media (max-width: 991px) {
  .site-header .navbar-collapse {
    background: #fff;
    border: 1px solid var(--bsh-border);
    border-radius: 14px;
    padding: 12px;
    margin-top: 14px;
    box-shadow: 0 14px 30px rgba(10,53,44,.08);
  }

  .site-header .nav-link.active::after {
    left: .6rem;
    right: auto;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    bottom: .55rem;
  }

  .navbar .nav-link {
    padding-left: .7rem;
  }

  .section {
    padding: 58px 0;
  }

  .help-hero {
    padding: 62px 0 70px;
  }

  .cta-card {
    padding: 2rem;
  }
}

/* Phone */
@media (max-width: 768px) {
  .help-doc-body {
    padding: 20px;
  }

  .faq-panel {
    padding: 4px 16px;
  }

  .cta-card {
    padding: 1.5rem;
  }
}

@media (max-width: 576px) {
  .section {
    padding: 48px 0;
  }

  .help-hero h1 {
    font-size: 1.7rem;
  }

  .brand-text {
    font-size: .97rem;
  }

  .site-header .navbar {
    padding-top: .5rem;
    padding-bottom: .5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}