/* roulang page: index */
:root {
  --primary: #146B9E;
  --primary-light: #EAF3FA;
  --primary-hover: #0F5A85;
  --accent: #E8703A;
  --accent-hover: #D15A28;
  --bg: #F4F8FB;
  --card-bg: #FFFFFF;
  --sidebar-bg: #FFFFFF;
  --text: #1F2A37;
  --text-secondary: #5B6B7C;
  --text-weak: #8A99A8;
  --border: #E3EAF0;
  --success: #1E8E5A;
  --warning: #D97706;
  --error: #DC2626;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(16,24,40,.06);
  --shadow-card-hover: 0 12px 32px rgba(16,24,40,.1);
  --shadow-btn: 0 1px 2px rgba(16,24,40,.06);
  --sidebar-width: 240px;
  --space-section: 80px;
  --container-max: 1200px;
  --footer-bg: #142433;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  min-height: 100vh;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color .2s ease;
}

ul {
  list-style: none;
}

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.app-wrapper {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 28px 16px 20px;
  transition: transform .3s ease;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.sidebar-logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary) 0%, #1E8FB4 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.sidebar-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
  line-height: 1.3;
}

.sidebar-nav {
  flex: 1;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 8px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 15px;
  margin-bottom: 6px;
  transition: background .2s ease, color .2s ease;
}

.sidebar-nav-item i {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.sidebar-nav-item:hover {
  background: #F0F5F9;
  color: var(--primary);
}

.sidebar-nav-item.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.6;
}

.sidebar-footer-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
}

.mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  z-index: 110;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.mobile-menu-btn {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text);
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.mobile-menu-btn:hover {
  background: var(--bg);
}

.mobile-topbar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
}

.mobile-topbar-logo .small-icon {
  width: 28px;
  height: 28px;
  font-size: 14px;
}

.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 36, 51, .5);
  z-index: 105;
  opacity: 0;
  transition: opacity .3s ease;
}

.mobile-overlay.show {
  opacity: 1;
}

/* Hero */
.hero-section {
  position: relative;
  padding: 48px 0 56px;
  background: linear-gradient(180deg, #F0F7FC 0%, var(--bg) 100%);
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(20, 107, 158, .03) 1px, transparent 1px), linear-gradient(90deg, rgba(20, 107, 158, .03) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 48px;
  align-items: center;
}

.hero-copy .badge-countdown {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFF7ED;
  border: 1px solid #FDE7D0;
  color: #B45A2A;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero-copy .badge-countdown i {
  font-size: 14px;
}

.hero-copy h1 {
  font-size: 36px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.hero-copy h1 .blue-text {
  color: var(--primary);
}

.hero-copy .hero-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 460px;
  margin-bottom: 28px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  padding: 12px 24px;
  cursor: pointer;
  border: none;
  transition: background .2s ease, color .2s ease, box-shadow .2s ease, transform .1s ease;
  box-shadow: var(--shadow-btn);
  line-height: 1.4;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 12px rgba(232, 112, 58, .25);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary:active {
  transform: scale(.98);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--primary-light);
}

.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-outline:active {
  transform: scale(.98);
}

.hero-visual {
  position: relative;
}

.hero-visual .hero-img-wrap {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card-hover);
}

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

.hero-stats {
  display: flex;
  gap: 20px;
  margin-top: 28px;
  padding: 16px 20px;
  background: var(--card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
}

.hero-stat-item {
  flex: 1;
  text-align: center;
}

.hero-stat-item .stat-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.hero-stat-item .stat-label {
  font-size: 12px;
  color: var(--text-weak);
  margin-top: 4px;
}

/* Countdown bar */
.countdown-bar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.countdown-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.countdown-label {
  display: flex;
  align-items: center;
  gap: 10px;
}

.countdown-label .tag {
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

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

.countdown-digits {
  display: flex;
  align-items: center;
  gap: 8px;
}

.countdown-digit-box {
  background: #FFF3EB;
  border-radius: 8px;
  padding: 6px 10px;
  min-width: 44px;
  text-align: center;
  border: 1px solid #FADCC7;
}

.countdown-digit-box .num {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.countdown-digit-box .unit {
  font-size: 11px;
  color: #B45A2A;
  margin-top: 2px;
}

.countdown-sep {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-weak);
}

/* Section common */
.section {
  padding: var(--space-section) 0;
}

.section-header {
  margin-bottom: 40px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.3;
}

.section-header p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 560px;
}

/* Feature Cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  transition: box-shadow .25s ease, transform .25s ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.feature-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.feature-card:nth-child(2) .feature-card-icon {
  background: #FFF3EB;
  color: var(--accent);
}

.feature-card:nth-child(3) .feature-card-icon {
  background: #E8F7EF;
  color: var(--success);
}

.feature-card:nth-child(4) .feature-card-icon {
  background: #F0ECFA;
  color: #6D4FC4;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

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

/* Gallery Wall */
.gallery-wall {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr;
  grid-template-rows: repeat(2, 220px);
  gap: 16px;
}

.gallery-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.gallery-item:hover img {
  transform: scale(1.03);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(20, 36, 51, .45) 100%);
  opacity: 0;
  transition: opacity .3s ease;
}

.gallery-item:hover::after {
  opacity: 1;
}

.gallery-item span {
  position: absolute;
  left: 16px;
  bottom: 14px;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  z-index: 2;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .3s ease, transform .3s ease;
  text-shadow: 0 1px 4px rgba(0,0,0,.3);
}

.gallery-item:hover span {
  opacity: 1;
  transform: translateY(0);
}

.gallery-item:first-child {
  grid-row: span 2;
}

/* CTA */
.cta-section {
  background: #FFF9F4;
}

.cta-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.cta-content .section-tag {
  background: #FDE7D0;
  color: #B45A2A;
}

.cta-content h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-content p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.8;
}

.cta-points {
  margin-bottom: 24px;
}

.cta-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  margin-bottom: 10px;
}

.cta-points li i {
  color: var(--success);
  font-size: 16px;
}

.cta-form {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-card-hover);
  border: 1px solid var(--border);
}

.cta-form h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.cta-form .form-tip {
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  font-size: 14px;
  background: #FAFDFF;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(20, 107, 158, .12);
}

.form-group input::placeholder {
  color: var(--text-weak);
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

.form-row .form-group:last-child {
  flex: 0 0 130px;
}

.form-submit {
  width: 100%;
  margin-top: 8px;
}

.form-error {
  color: var(--error);
  font-size: 12px;
  margin-top: 6px;
  display: none;
}

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

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow .2s ease;
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
}

.faq-question:hover {
  background: #F8FBFD;
}

.faq-question:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}

.faq-question .fa-chevron-down {
  font-size: 14px;
  color: var(--text-weak);
  transition: transform .3s ease;
  flex-shrink: 0;
}

.faq-item.open .fa-chevron-down {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-more {
  text-align: center;
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

.faq-more a {
  color: var(--primary);
  font-weight: 500;
}

.faq-more a:hover {
  text-decoration: underline;
}

/* News List */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.news-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  box-shadow: var(--shadow-card);
  transition: box-shadow .25s ease;
  min-height: 130px;
}

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

.news-card-badge {
  flex-shrink: 0;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.news-card-body {
  flex: 1;
  min-width: 0;
}

.news-card-body .news-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 6px;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.news-card-body .news-title:hover {
  color: var(--primary);
}

.news-card-body .news-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-weak);
}

.news-card-arrow {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-weak);
  transition: background .2s ease, color .2s ease;
}

.news-card:hover .news-card-arrow {
  background: var(--primary-light);
  color: var(--primary);
}

.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 20px;
  color: var(--text-weak);
  font-size: 15px;
  background: var(--card-bg);
  border-radius: var(--radius-card);
  border: 1px dashed var(--border);
}

/* Footer */
.site-footer {
  background: var(--footer-bg);
  color: #B6C2CE;
  padding: 48px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand .footer-logo span {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #9FB0C0;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: #9FB0C0;
}

.footer-col ul li a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: #7C8CA0;
}

/* Responsive */
@media (max-width: 1023px) {
  .sidebar {
    transform: translateX(-100%);
    width: 260px;
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .mobile-topbar {
    display: flex;
  }
  
  .main-content {
    padding-top: 56px;
  }
  
  .mobile-overlay.show {
    display: block;
  }
  
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cta-inner {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: repeat(3, 200px);
  }
  
  .gallery-item:first-child {
    grid-row: span 2;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  :root {
    --space-section: 56px;
  }
  
  .container {
    padding: 0 16px;
  }
  
  .hero-copy h1 {
    font-size: 28px;
  }
  
  .hero-stats {
    flex-wrap: wrap;
  }
  
  .hero-stat-item {
    flex: 1 1 40%;
  }
  
  .countdown-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  
  .countdown-digits {
    flex-wrap: wrap;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(4, 200px);
  }
  
  .gallery-item:first-child {
    grid-row: span 1;
  }
  
  .news-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-form {
    padding: 24px;
  }
  
  .form-row {
    flex-direction: column;
    gap: 0;
  }
  
  .form-row .form-group:last-child {
    flex: 1;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .section-header h2 {
    font-size: 24px;
  }
}

/* roulang page: article */
:root {
  --primary: #146B9E;
  --primary-dark: #0E4F73;
  --primary-light: #EAF3FA;
  --accent: #E8703A;
  --accent-light: #FDF0EA;
  --bg: #F4F8FB;
  --card: #FFFFFF;
  --text: #1F2A37;
  --text-2: #5B6B7C;
  --text-3: #8A99A8;
  --border: #E3EAF0;
  --success: #1E8E5A;
  --warning: #D97706;
  --danger: #DC2626;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow: 0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(16,24,40,.06);
  --shadow-hover: 0 12px 32px rgba(16,24,40,.1);
  --sidebar-w: 240px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: var(--primary); transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
button { font-family: inherit; border: none; cursor: pointer; background: none; }
ul, ol { list-style: none; }
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.no-scroll { overflow: hidden; }

/* ===== 侧边栏 ===== */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: #FFFFFF;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: transform .3s ease;
}
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 28px 24px 20px;
  border-bottom: 1px solid var(--border);
}
.sidebar-logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 1px;
  flex-shrink: 0;
}
.sidebar-logo span:last-child {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .5px;
  line-height: 1.3;
}
.sidebar-nav {
  flex: 1;
  padding: 20px 14px;
  overflow-y: auto;
}
.sidebar-nav ul { display: flex; flex-direction: column; gap: 4px; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 15px;
  font-weight: 500;
  transition: background .2s, color .2s;
}
.nav-link i { width: 20px; text-align: center; font-size: 16px; color: var(--text-3); transition: color .2s; }
.nav-link:hover { background: #F0F5F9; color: var(--primary); }
.nav-link:hover i { color: var(--primary); }
.nav-link.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.nav-link.active i { color: var(--primary); }
.sidebar-footer {
  padding: 20px 24px 24px;
  border-top: 1px solid var(--border);
}
.sidebar-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-3);
  padding: 4px 0;
}
.sidebar-info i { color: var(--primary); font-size: 14px; }

/* ===== 移动顶栏 ===== */
.mobile-topbar {
  display: none;
}

/* ===== 遮罩 ===== */
.sidebar-overlay {
  display: none;
}

/* ===== 主内容区 ===== */
.main-wrapper {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.main-wrapper .container {
  flex: 1;
  padding-bottom: 48px;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 28px 0 0;
  font-size: 13px;
  color: var(--text-3);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.breadcrumb a { color: var(--text-3); transition: color .2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #C6D2DB; }
.breadcrumb .current { color: var(--text-2); font-weight: 500; }

/* ===== 文章头图 ===== */
.article-hero {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin: 24px 0 32px;
}
.article-hero img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

/* ===== 文章主体 ===== */
.article-body {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 0 24px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-pill);
}
.meta-date {
  font-size: 13px;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-title {
  font-size: 36px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.article-summary {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: 28px;
  padding-left: 16px;
  border-left: 3px solid var(--primary);
}

/* ===== 文章正文排版 ===== */
.article-content {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.article-content h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--text);
}
.article-content p {
  margin-bottom: 16px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 18px 24px;
}
.article-content ul li {
  position: relative;
  padding-left: 4px;
  margin-bottom: 6px;
  list-style: disc;
}
.article-content ol li {
  list-style: decimal;
  margin-bottom: 6px;
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  padding: 18px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: var(--text-2);
  font-size: 14px;
}
.article-content blockquote p { margin-bottom: 0; }
.article-content img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 24px 0;
  width: auto;
  max-width: 100%;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover { color: var(--accent); }
.article-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

/* ===== 内容未找到 ===== */
.article-not-found {
  text-align: center;
  padding: 60px 24px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.article-not-found i {
  font-size: 48px;
  color: var(--text-3);
  margin-bottom: 16px;
}
.article-not-found h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.article-not-found p {
  color: var(--text-2);
  font-size: 15px;
  margin-bottom: 24px;
}
.article-not-found .btn {
  display: inline-flex;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  cursor: pointer;
  transition: background .2s, transform .15s, box-shadow .2s;
  text-decoration: none;
  border: 2px solid transparent;
}
.btn:focus-visible {
  outline: 3px solid rgba(20,107,158,.35);
  outline-offset: 2px;
}
.btn:active { transform: scale(.98); }
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: #D55A28;
  color: #fff;
  border-color: #D55A28;
  box-shadow: 0 4px 16px rgba(232,112,58,.25);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
}

/* ===== 相关推荐 ===== */
.related-section {
  max-width: 780px;
  margin: 40px auto 0;
  padding: 40px 0 0;
  border-top: 1px solid var(--border);
}
.related-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 24px;
}
.related-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  color: var(--text-3);
  text-align: center;
}
.related-empty i {
  font-size: 32px;
  margin-bottom: 12px;
  color: #C6D2DB;
}
.related-empty p { font-size: 14px; }

/* ===== 页脚 ===== */
.site-footer {
  background: #142433;
  color: #A3B3C2;
  padding: 48px 0 0;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo .sidebar-logo-icon {
  width: 36px;
  height: 36px;
  font-size: 16px;
  border-radius: 8px;
}
.footer-logo span:last-child {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #7C91A3;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
  font-size: 14px;
  color: #7C91A3;
}
.footer-col ul li a {
  color: #A3B3C2;
  font-size: 14px;
  transition: color .2s;
}
.footer-col ul li a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: #5D7085;
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .sidebar {
    transform: translateX(-100%);
    width: 280px;
    box-shadow: 4px 0 24px rgba(16,24,40,.12);
  }
  .sidebar.open { transform: translateX(0); }
  .main-wrapper { margin-left: 0; }
  .mobile-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    padding: 0 16px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 900;
  }
  .mobile-menu-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text);
    background: var(--bg);
    transition: background .2s;
  }
  .mobile-menu-btn:hover { background: var(--primary-light); }
  .mobile-topbar-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
  }
  .mobile-topbar-logo .small-icon {
    width: 30px;
    height: 30px;
    font-size: 14px;
    border-radius: 7px;
  }
  .sidebar-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(20,36,51,.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s, visibility .3s;
  }
  .sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
  }
  .article-hero img { height: 260px; }
  .article-title { font-size: 30px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .container { padding: 0 16px; }
  .breadcrumb { padding-top: 20px; }
  .article-hero { margin: 16px 0 24px; }
  .article-hero img { height: 200px; }
  .article-title { font-size: 24px; }
  .article-summary { font-size: 14px; padding-left: 12px; }
  .article-content { font-size: 14px; }
  .article-content h2 { font-size: 20px; }
  .article-content blockquote { padding: 14px 16px; }
  .related-section { padding-top: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

/* roulang page: category1 */
:root {
            --primary: #146B9E;
            --primary-dark: #0F567D;
            --primary-light: #EAF3FA;
            --secondary-light: #F0F5F9;
            --accent: #E8703A;
            --accent-dark: #D05A28;
            --accent-light: #FDF1EA;
            --bg: #F4F8FB;
            --card-bg: #FFFFFF;
            --text: #1F2A37;
            --text-secondary: #5B6B7C;
            --text-muted: #8A99A8;
            --border: #E3EAF0;
            --success: #1E8E5A;
            --warning: #D97706;
            --error: #DC2626;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-tag: 999px;
            --shadow-card: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .06);
            --shadow-hover: 0 12px 32px rgba(16, 24, 40, .1);
            --sidebar-width: 240px;
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --space-section: 72px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            font-size: 15px;
            line-height: 1.7;
            background: var(--bg);
            color: var(--text);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input {
            font-family: inherit;
            font-size: 14px;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }
        .app-layout {
            min-height: 100vh;
        }
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--card-bg);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 100;
            padding: 24px 16px;
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 8px 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 20px;
        }
        .sidebar-logo-icon {
            width: 36px;
            height: 36px;
            min-width: 36px;
            border-radius: 8px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
        }
        .sidebar-logo-icon.small-icon {
            width: 28px;
            height: 28px;
            min-width: 28px;
            font-size: 15px;
            border-radius: 6px;
        }
        .sidebar-logo-text {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: .5px;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 14px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: background .2s, color .2s;
        }
        .nav-item i {
            width: 18px;
            text-align: center;
            font-size: 15px;
            color: var(--text-muted);
            transition: color .2s;
        }
        .nav-item:hover {
            background: var(--secondary-light);
            color: var(--text);
        }
        .nav-item:hover i {
            color: var(--primary);
        }
        .nav-item.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-item.active i {
            color: var(--primary);
        }
        .sidebar-foot {
            background: var(--secondary-light);
            border-radius: 10px;
            padding: 14px 16px;
            margin-top: 12px;
        }
        .sidebar-foot .foot-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }
        .sidebar-foot .foot-value {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
        }
        .app-main {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
        }
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            z-index: 120;
            box-shadow: 0 2px 8px rgba(16, 24, 40, .04);
        }
        .mobile-topbar-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
        }
        .mobile-menu-btn {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text);
            transition: background .2s;
        }
        .mobile-menu-btn:hover {
            background: var(--secondary-light);
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(16, 24, 40, .45);
            z-index: 130;
            opacity: 0;
            transition: opacity .3s;
        }
        .mobile-overlay.visible {
            opacity: 1;
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            background: var(--card-bg);
            z-index: 140;
            padding: 24px 16px;
            flex-direction: column;
            transform: translateX(-100%);
            transition: transform .32s ease;
            box-shadow: 4px 0 24px rgba(16, 24, 40, .08);
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .drawer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 8px 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 16px;
        }
        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .drawer-foot {
            background: var(--secondary-light);
            border-radius: 10px;
            padding: 14px 16px;
        }
        .drawer-foot p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .page-hero {
            position: relative;
            padding: 72px 0 80px;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
            background: var(--primary-light);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: .24;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(244, 248, 251, .95) 0%, rgba(244, 248, 251, .78) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--text-secondary);
        }
        .page-hero h1 {
            font-size: 38px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .hero-sub {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 560px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            transition: background .2s, color .2s, border .2s, transform .15s, box-shadow .2s;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn:active {
            transform: scale(.98);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 18px rgba(20, 107, 158, .25);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 18px rgba(232, 112, 58, .25);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
        }
        .section {
            padding: var(--space-section) 0;
        }
        .section-head {
            margin-bottom: 40px;
        }
        .section-head h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: 8px;
        }
        .section-head p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .section-head.center {
            text-align: center;
        }
        .qa-layout {
            display: grid;
            grid-template-columns: 1fr 260px;
            gap: 32px;
            align-items: start;
        }
        .qa-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .qa-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 28px 24px 26px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(227, 234, 240, .5);
            transition: box-shadow .25s, transform .25s;
            position: relative;
        }
        .qa-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .qa-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 24px;
            right: 24px;
            height: 3px;
            border-radius: 3px 3px 0 0;
            background: var(--primary);
            opacity: 0;
            transition: opacity .25s;
        }
        .qa-card:hover::before {
            opacity: 1;
        }
        .qa-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .qa-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .qa-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .qa-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .qa-side img {
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            object-fit: cover;
            width: 100%;
            height: 190px;
        }
        .qa-note {
            background: var(--accent-light);
            border-radius: 12px;
            padding: 18px 20px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        .qa-note .note-icon {
            width: 34px;
            height: 34px;
            min-width: 34px;
            border-radius: 8px;
            background: var(--accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }
        .qa-note p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .value-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .value-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(227, 234, 240, .5);
            transition: box-shadow .25s, transform .25s;
        }
        .value-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .value-card .v-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            margin-bottom: 18px;
        }
        .value-card:nth-child(1) .v-icon {
            background: var(--primary);
        }
        .value-card:nth-child(2) .v-icon {
            background: var(--accent);
        }
        .value-card:nth-child(3) .v-icon {
            background: #4A90A4;
        }
        .value-card:nth-child(4) .v-icon {
            background: var(--success);
        }
        .value-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .value-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .events-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .event-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(227, 234, 240, .5);
            transition: box-shadow .25s, transform .25s;
        }
        .event-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .event-cover {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .event-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }
        .event-card:hover .event-cover img {
            transform: scale(1.04);
        }
        .event-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
        }
        .event-body {
            padding: 20px 22px 22px;
        }
        .event-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .event-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 14px;
        }
        .event-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }
        .event-meta span {
            font-size: 12px;
            color: var(--text-muted);
        }
        .event-meta a {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }
        .event-meta a:hover {
            color: var(--accent);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(227, 234, 240, .5);
            position: relative;
            transition: box-shadow .25s;
        }
        .process-step:hover {
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .process-step h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: 12px;
            border: 1px solid rgba(227, 234, 240, .5);
            box-shadow: var(--shadow-card);
            margin-bottom: 14px;
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            text-align: left;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            transition: background .2s;
        }
        .faq-question:hover {
            background: var(--secondary-light);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }
        .faq-toggle {
            width: 28px;
            height: 28px;
            min-width: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: transform .3s ease;
        }
        .faq-toggle i {
            transition: transform .3s ease;
        }
        .faq-item.active .faq-toggle i {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 22px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-answer p {
            border-left: 3px solid var(--primary-light);
            padding-left: 16px;
        }
        .faq-more {
            text-align: center;
            margin-top: 24px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .faq-more a {
            color: var(--primary);
            font-weight: 600;
        }
        .faq-more a:hover {
            color: var(--accent);
        }
        .cta-section {
            background: var(--primary-light);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-copy h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .cta-copy p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 440px;
        }
        .cta-form-card {
            background: var(--card-bg);
            border-radius: 16px;
            padding: 32px;
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--border);
        }
        .cta-form-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .cta-form-card .form-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .signup-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .signup-form input {
            width: 100%;
            height: 44px;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 0 16px;
            font-size: 14px;
            color: var(--text);
            background: #fff;
            transition: border-color .2s, box-shadow .2s;
        }
        .signup-form input::placeholder {
            color: var(--text-muted);
        }
        .signup-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(20, 107, 158, .12);
        }
        .captcha-row {
            display: flex;
            gap: 12px;
        }
        .captcha-row input {
            flex: 1;
        }
        .captcha-code {
            height: 44px;
            min-width: 96px;
            width: 96px;
            border: 1px dashed var(--border);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-light);
            cursor: pointer;
            user-select: none;
        }
        .captcha-code:hover {
            border-color: var(--accent);
        }
        .signup-form .btn {
            width: 100%;
            justify-content: center;
            margin-top: 4px;
        }
        .form-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 10px;
            text-align: center;
        }
        .site-footer {
            background: #142433;
            color: rgba(255, 255, 255, .78);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .footer-logo span:last-child {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .65);
            max-width: 420px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, .7);
            transition: color .2s;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .5);
        }
        @media (max-width: 1200px) {
            .value-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .qa-layout {
                grid-template-columns: 1fr;
            }
            .qa-side {
                display: grid;
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 1023px) {
            .app-sidebar {
                display: none;
            }
            .app-main {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .app-main {
                padding-top: 56px;
            }
            .mobile-overlay {
                display: block;
            }
            .mobile-drawer {
                display: flex;
            }
            .events-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 20px;
            }
            :root {
                --space-section: 56px;
            }
            .page-hero {
                padding: 48px 0 56px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                justify-content: center;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .qa-grid {
                grid-template-columns: 1fr;
            }
            .qa-side {
                grid-template-columns: 1fr;
            }
            .value-grid {
                grid-template-columns: 1fr;
            }
            .events-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .cta-form-card {
                padding: 24px 20px;
            }
            .captcha-row {
                flex-direction: column;
            }
            .captcha-code {
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .btn {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
            }
            .qa-card {
                padding: 22px 18px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #146B9E;
            --primary-dark: #0F547D;
            --primary-light: #EAF3FA;
            --accent: #E8703A;
            --accent-dark: #D55A28;
            --bg: #F4F8FB;
            --card-bg: #FFFFFF;
            --text: #1F2A37;
            --text-secondary: #5B6B7C;
            --text-helper: #8A99A8;
            --border: #E3EAF0;
            --success: #1E8E5A;
            --warning: #D97706;
            --error: #DC2626;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px rgba(16, 24, 40, .06);
            --shadow-hover: 0 12px 32px rgba(16, 24, 40, .1);
            --sidebar-width: 240px;
            --mobile-topbar-height: 56px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
            font-size: 15px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        summary::-webkit-details-marker {
            display: none;
        }

        summary {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 48px;
        }

        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            width: var(--sidebar-width);
            background: #FFFFFF;
            border-right: 1px solid var(--border);
            position: fixed;
            top: 0;
            bottom: 0;
            left: 0;
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 28px 16px 20px;
            overflow-y: auto;
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0 8px 24px;
            border-bottom: 1px solid var(--border);
        }

        .sidebar-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
        }

        .sidebar-logo span:last-child {
            font-weight: 600;
            font-size: 16px;
            color: var(--text);
            letter-spacing: .5px;
            line-height: 1.3;
        }

        .sidebar-logo-icon.small-icon {
            width: 28px;
            height: 28px;
            font-size: 14px;
            border-radius: 8px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-top: 24px;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: background .2s, color .2s;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            color: var(--text-helper);
            transition: color .2s;
        }

        .nav-item:hover {
            background: #F0F5F9;
            color: var(--text);
        }

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

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

        .nav-item.active i {
            color: var(--primary);
        }

        .nav-item:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -1px;
        }

        .sidebar-bottom {
            margin-top: auto;
            padding: 16px 14px;
            background: #F8FAFC;
            border-radius: 12px;
            font-size: 13px;
            color: var(--text-helper);
            display: flex;
            flex-direction: column;
            gap: 6px;
            line-height: 1.6;
        }

        .sidebar-bottom a {
            color: var(--primary);
            font-weight: 500;
        }

        .sidebar-bottom a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .main-wrapper {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .mobile-topbar {
            display: none;
            height: var(--mobile-topbar-height);
            align-items: center;
            padding: 0 20px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 90;
            gap: 12px;
        }

        .mobile-menu-btn {
            background: none;
            border: none;
            font-size: 20px;
            color: var(--text);
            width: 38px;
            height: 38px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background .2s;
        }

        .mobile-menu-btn:hover {
            background: #F0F5F9;
        }

        .mobile-topbar-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
        }

        .sidebar-overlay {
            position: fixed;
            inset: 0;
            background: rgba(16, 24, 40, .5);
            z-index: 99;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s;
        }

        .sidebar-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .page-hero {
            background: linear-gradient(135deg, rgba(20, 107, 158, .08), rgba(20, 107, 158, .02)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            padding: 88px 0 80px;
            position: relative;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-helper);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: var(--text-helper);
            transition: color .2s;
        }

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

        .page-hero .badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 4px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 14px;
        }

        .page-hero h1 .highlight {
            color: var(--primary);
        }

        .page-hero .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 600px;
            margin-bottom: 28px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 26px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: none;
            transition: transform .2s, box-shadow .2s, background .2s, color .2s;
        }

        .btn:active {
            transform: scale(.98);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(20, 107, 158, .35);
            outline-offset: 2px;
        }

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

        .btn-primary:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 16px rgba(232, 112, 58, .28);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 8px 24px;
        }

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

        .section {
            padding: 76px 0;
        }

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

        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 15px;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .timeline {
            position: relative;
            max-width: 940px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 2px;
            background: var(--border);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 20px 44px 20px 40px;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            padding-left: 44px;
        }

        .timeline-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 26px;
            text-align: left;
            display: inline-block;
            width: 100%;
            transition: box-shadow .3s, transform .3s;
        }

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

        .timeline-card:hover h3 {
            color: var(--primary);
        }

        .timeline-step {
            display: inline-block;
            font-size: 32px;
            font-weight: 700;
            color: #D6E5F0;
            line-height: 1;
            margin-bottom: 6px;
        }

        .timeline-date {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 3px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .timeline-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            transition: color .2s;
        }

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

        .timeline-card img {
            width: 100%;
            height: 160px;
            border-radius: 8px;
            margin-top: 16px;
            object-fit: cover;
        }

        .timeline-dot {
            position: absolute;
            top: 44px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px var(--border);
            z-index: 1;
        }

        .timeline-item:nth-child(odd) .timeline-dot {
            right: -8px;
        }

        .timeline-item:nth-child(even) .timeline-dot {
            left: -8px;
        }

        .reasons-section {
            background: #FBFDFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .reasons-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .reason-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px 28px;
            transition: box-shadow .3s, transform .3s;
            border-top: 3px solid var(--primary);
        }

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

        .reason-card:hover h3 {
            color: var(--primary);
        }

        .reason-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .reason-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 10px;
            transition: color .2s;
        }

        .reason-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

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

        .checklist-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 30px 24px;
            text-align: center;
            transition: box-shadow .3s, transform .3s;
        }

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

        .checklist-card:hover h3 {
            color: var(--primary);
        }

        .checklist-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin: 0 auto 18px;
        }

        .checklist-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 10px;
            transition: color .2s;
        }

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

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

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow .3s;
        }

        .faq-item[open] {
            box-shadow: var(--shadow-hover);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 22px 26px;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: background .2s;
        }

        .faq-question:hover {
            background: #F8FAFC;
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            border-radius: 12px;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: transform .3s;
        }

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

        .faq-answer {
            padding: 0 26px 22px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .faq-footer {
            text-align: center;
            margin-top: 32px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .faq-footer a {
            color: var(--primary);
            font-weight: 500;
        }

        .faq-footer a:hover {
            text-decoration: underline;
        }

        .cta-box {
            background: var(--primary-light);
            border-radius: 20px;
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .cta-box h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .cta-box p {
            max-width: 540px;
            margin: 0 auto 28px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: #142433;
            color: #A8B8C8;
            padding: 56px 48px 24px;
            margin-top: 16px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 12px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-logo .sidebar-logo-icon {
            background: var(--primary);
        }

        .footer-logo span:last-child {
            color: #fff;
            font-weight: 600;
            font-size: 16px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 16px;
            font-weight: 600;
        }

        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
            display: flex;
            align-items: center;
        }

        .footer-col a {
            transition: color .2s;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 20px;
            margin-top: 40px;
            text-align: center;
            font-size: 13px;
            color: #8195A8;
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        @media (max-width: 1023px) {
            .sidebar {
                transform: translateX(-100%);
                transition: transform .3s ease;
                box-shadow: 0 0 40px rgba(16, 24, 40, .12);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .main-wrapper {
                margin-left: 0;
            }

            .mobile-topbar {
                display: flex;
            }

            .page-hero {
                padding: 64px 24px;
            }

            .section {
                padding: 60px 0;
            }

            .container {
                padding: 0 24px;
            }

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

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

            .site-footer {
                padding: 48px 24px 24px;
            }

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

        @media (max-width: 767px) {
            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero .hero-desc {
                font-size: 15px;
            }

            .timeline::before {
                left: 18px;
                transform: none;
            }

            .timeline-item,
            .timeline-item:nth-child(odd),
            .timeline-item:nth-child(even) {
                width: 100%;
                left: 0;
                padding: 16px 0 16px 50px;
                text-align: left;
            }

            .timeline-dot,
            .timeline-item:nth-child(odd) .timeline-dot,
            .timeline-item:nth-child(even) .timeline-dot {
                left: 10px;
                right: auto;
                top: 40px;
            }

            .timeline-card img {
                height: 140px;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .cta-box {
                padding: 40px 24px;
            }

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

            .hero-buttons,
            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-buttons .btn,
            .cta-buttons .btn {
                justify-content: center;
                width: 100%;
            }

            .page-hero {
                padding: 48px 20px;
            }

            .site-footer {
                padding: 40px 20px 20px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #146B9E;
  --primary-dark: #0F5279;
  --primary-light: #EAF3FA;
  --accent: #E8703A;
  --accent-dark: #D45F2B;
  --bg: #F4F8FB;
  --card-bg: #FFFFFF;
  --text-main: #1F2A37;
  --text-muted: #5B6B7C;
  --text-light: #8A99A8;
  --border: #E3EAF0;
  --success: #1E8E5A;
  --warning: #D97706;
  --error: #DC2626;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-full: 999px;
  --shadow: 0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(16,24,40,.06);
  --shadow-hover: 0 12px 32px rgba(16,24,40,.10);
  --sidebar-width: 240px;
  --topbar-height: 56px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text-main);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
ul {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.app-shell {
  display: flex;
  min-height: 100vh;
}
.sidebar {
  width: var(--sidebar-width);
  background: var(--card-bg);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  transition: transform .3s ease, width .3s ease;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 24px;
  border-bottom: 1px solid var(--border);
  min-height: 60px;
}
.sidebar-logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 21px;
  font-weight: 700;
  flex-shrink: 0;
  letter-spacing: -.5px;
}
.sidebar-logo-icon.small-icon {
  width: 32px;
  height: 32px;
  font-size: 16px;
  border-radius: 8px;
}
.sidebar-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
}
.sidebar-brand-text strong {
  color: var(--text-main);
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}
.sidebar-brand-text span {
  color: var(--text-light);
  font-size: 12px;
  margin-top: 2px;
}
.sidebar-nav {
  flex: 1;
  padding: 24px 0 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-btn);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: background .2s ease, color .2s ease, transform .2s ease;
  outline: none;
}
.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 16px;
  color: var(--text-light);
  transition: color .2s ease;
}
.nav-item:hover {
  background: #F0F5F9;
  color: var(--text-main);
}
.nav-item:hover i {
  color: var(--primary);
}
.nav-item.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}
.nav-item.active i {
  color: var(--primary);
}
.nav-item:focus-visible {
  box-shadow: 0 0 0 3px rgba(20,107,158,.2);
}
.sidebar-foot {
  border-top: 1px solid var(--border);
  padding: 20px 8px 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sidebar-foot p {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  font-size: 13px;
  margin: 0;
}
.sidebar-foot p i {
  color: var(--primary);
  font-size: 14px;
  width: 18px;
  text-align: center;
}
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-height);
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  z-index: 1100;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}
.mobile-menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  color: var(--text-main);
  font-size: 18px;
  transition: background .2s ease;
}
.mobile-menu-btn:hover {
  background: #F0F5F9;
}
.mobile-menu-btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.mobile-topbar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--text-main);
  font-size: 15px;
}
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(16,24,40,.4);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
}
.sidebar-overlay.visible {
  opacity: 1;
  visibility: visible;
}
.main-content {
  flex: 1;
}
.section {
  padding: 72px 0;
}
.section-header {
  max-width: 720px;
  margin-bottom: 44px;
}
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 10px;
}
.section-header p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  transition: all .2s ease;
  outline: none;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff !important;
  border: 1px solid var(--accent);
}
.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: scale(.98);
}
.btn-primary:focus-visible {
  box-shadow: 0 0 0 4px rgba(232,112,58,.25);
}
.btn-outline {
  background: transparent;
  color: var(--primary) !important;
  border: 1px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}
.btn-outline:active {
  transform: scale(.98);
}
.btn-outline:focus-visible {
  box-shadow: 0 0 0 4px rgba(20,107,158,.18);
}
.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}
.page-hero {
  position: relative;
  padding: 96px 0 72px;
  background-color: var(--bg);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
}
.page-hero-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #F4F8FB 10%, rgba(244,248,251,.88) 50%, rgba(244,248,251,.35) 100%);
}
.page-hero .container {
  position: relative;
  z-index: 2;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 32px;
}
.breadcrumb a {
  color: var(--text-light);
  transition: color .2s ease;
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb-sep {
  color: var(--border);
}
.hero-badge {
  display: inline-block;
  padding: 5px 16px;
  background: rgba(20,107,158,.12);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 18px;
}
.page-hero h1 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-main);
  max-width: 640px;
  margin-bottom: 18px;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 28px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
  max-width: 720px;
}
.hero-stat-item {
  background: rgba(255,255,255,.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 18px 20px;
  backdrop-filter: none;
}
.hero-stat-item strong {
  display: block;
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
}
.hero-stat-item span {
  font-size: 13px;
  color: var(--text-muted);
}
.resource-index {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}
.index-group-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.index-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 26px;
  position: relative;
  transition: box-shadow .3s ease, transform .3s ease;
}
.index-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.index-card .index-num {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  opacity: .16;
  position: absolute;
  top: 18px;
  right: 22px;
  line-height: 1;
  font-family: "Arial", sans-serif;
}
.index-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}
.index-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  z-index: 1;
}
.index-card ul li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-muted);
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
  transition: color .2s ease, padding-left .2s ease;
}
.index-card ul li a i {
  font-size: 12px;
  color: var(--text-light);
  transition: color .2s ease, transform .2s ease;
}
.index-card ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.index-card ul li a:hover i {
  color: var(--primary);
  transform: translateX(2px);
}
.index-card.consult-card {
  background: linear-gradient(135deg, #FEF7F3, #FFFFFF);
  border-color: rgba(232,112,58,.25);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.index-card.consult-card h3 {
  color: var(--accent-dark);
}
.index-card.consult-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
}
.quick-rules {
  background: var(--bg);
}
.quick-rule-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.rule-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px 26px;
  transition: box-shadow .3s ease;
}
.rule-item:hover {
  box-shadow: var(--shadow-hover);
}
.rule-item .rule-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: var(--primary-light);
  color: var(--primary);
}
.rule-item .rule-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.rule-item .rule-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}
.docs-section {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}
.docs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.doc-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: box-shadow .3s ease, transform .3s ease;
}
.doc-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.doc-thumb {
  height: 180px;
  overflow: hidden;
  background: var(--bg);
}
.doc-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.doc-card:hover .doc-thumb img {
  transform: scale(1.03);
}
.doc-body {
  padding: 22px 24px 24px;
}
.doc-type {
  display: inline-block;
  padding: 3px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.doc-type.orange {
  background: rgba(232,112,58,.12);
  color: var(--accent-dark);
}
.doc-type.green {
  background: rgba(30,142,90,.12);
  color: var(--success);
}
.doc-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
}
.doc-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.doc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: color .2s ease, gap .2s ease;
}
.doc-link i {
  font-size: 13px;
}
.doc-link:hover {
  color: var(--accent);
  gap: 9px;
}
.cta-section {
  background: var(--bg);
}
.cta-card {
  background: linear-gradient(135deg, rgba(20,107,158,.06), rgba(232,112,58,.08));
  border: 1px solid rgba(20,107,158,.12);
  border-radius: 16px;
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-card-left h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.cta-card-left p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
  max-width: 520px;
}
.cta-card .btn {
  flex-shrink: 0;
}
.faq-section {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}
.faq-list {
  max-width: 860px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  transition: box-shadow .2s ease, border-color .2s ease;
}
.faq-item.active {
  border-color: rgba(20,107,158,.25);
  box-shadow: var(--shadow);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  transition: color .2s ease;
  border-radius: var(--radius-card);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}
.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform .3s ease, background .3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
  padding: 0 24px;
}
.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 4px 24px 22px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.more-section {
  background: var(--bg);
}
.more-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.more-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
  transition: box-shadow .3s ease, transform .3s ease;
}
.more-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.more-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.more-card h3 i {
  color: var(--primary);
}
.more-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 18px;
}
.more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: color .2s ease, gap .2s ease;
}
.more-link:hover {
  color: var(--accent);
  gap: 9px;
}
.site-footer {
  background: #142433;
  color: rgba(255,255,255,.72);
  padding: 56px 0 28px;
}
.site-footer .container {
  max-width: 1200px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.6);
  max-width: 420px;
  margin: 0;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255,255,255,.6);
}
.footer-col ul li a {
  color: rgba(255,255,255,.6);
  transition: color .2s ease;
}
.footer-col ul li a:hover {
  color: #fff;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}
.footer-bottom span {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
@media (max-width: 1023px) and (min-width: 768px) {
  .sidebar {
    width: 72px;
    padding: 24px 12px;
  }
  .sidebar-brand {
    justify-content: center;
    padding: 0 0 20px;
  }
  .sidebar-brand-text,
  .sidebar-foot p span,
  .nav-item span {
    display: none;
  }
  .nav-item {
    justify-content: center;
    padding: 12px;
  }
  .nav-item i {
    margin: 0;
    width: auto;
    font-size: 18px;
  }
  .sidebar-foot {
    align-items: center;
  }
  .sidebar-foot p i {
    width: auto;
    font-size: 16px;
  }
  .main-wrapper {
    margin-left: 72px;
    width: calc(100% - 72px);
  }
}
@media (max-width: 767px) {
  .sidebar {
    transform: translateX(-100%);
    width: 270px;
    padding: 20px 16px;
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 8px 0 40px rgba(16,24,40,.2);
  }
  .sidebar-brand-text {
    display: flex;
  }
  .nav-item span,
  .sidebar-foot p span {
    display: inline;
  }
  .main-wrapper {
    margin-left: 0;
    width: 100%;
  }
  .mobile-topbar {
    display: flex;
  }
  .main-content {
    padding-top: var(--topbar-height);
  }
  .page-hero {
    padding: 64px 0 48px;
  }
  .container {
    padding: 0 20px;
  }
  .section {
    padding: 56px 0;
  }
  .page-hero h1 {
    font-size: 30px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 32px;
  }
  .hero-stat-item {
    padding: 12px 14px;
  }
  .hero-stat-item strong {
    font-size: 21px;
  }
  .section-header h2 {
    font-size: 23px;
  }
  .index-group-grid {
    grid-template-columns: 1fr;
  }
  .quick-rule-grid {
    grid-template-columns: 1fr;
  }
  .docs-grid {
    grid-template-columns: 1fr;
  }
  .cta-card {
    padding: 32px 24px;
    flex-direction: column;
    align-items: flex-start;
  }
  .more-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .page-hero h1 {
    font-size: 26px;
  }
  .hero-stats {
    grid-template-columns: 1fr;
  }
}