/* roulang page: index */
:root {
  --primary: #0b2545;
  --primary-dark: #061a33;
  --primary-light: #13315c;
  --accent: #c8a04e;
  --accent-light: #e8cf9a;
  --accent-dark: #a88436;
  --bg-light: #f5f7fa;
  --white: #ffffff;
  --text-main: #1c2b3a;
  --text-sub: #617086;
  --text-light: #8a99ac;
  --border: #e3e8ef;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 16px rgba(11, 37, 69, 0.06);
  --shadow-md: 0 10px 32px rgba(11, 37, 69, 0.10);
  --shadow-lg: 0 20px 48px rgba(11, 37, 69, 0.14);
  --transition: all 0.3s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-light);
  min-height: 100vh;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}
ul {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  border: 2px solid transparent;
  transition: var(--transition);
  text-align: center;
}
.btn i {
  font-size: 14px;
  transition: transform 0.3s ease;
}
.btn:hover i {
  transform: translateX(4px);
}
.btn-accent {
  background: var(--accent);
  color: var(--primary-dark);
}
.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(200, 160, 78, 0.35);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(11, 37, 69, 0.25);
}
.btn-lg {
  padding: 16px 44px;
  font-size: 18px;
}
.section {
  padding: 100px 0;
}
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 14px;
  padding: 6px 18px;
  border-radius: 999px;
  background: rgba(200, 160, 78, 0.1);
}
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--primary);
  margin-bottom: 14px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.8;
}
/* ============ Sidebar Navigation ============ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
  display: flex;
  flex-direction: column;
  z-index: 200;
  padding: 36px 24px 28px;
  overflow-y: auto;
  transition: transform 0.3s ease;
}
.nav-brand {
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 28px;
}
.brand-logo {
  display: block;
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  line-height: 1.35;
  letter-spacing: 0.02em;
}
.brand-logo:hover {
  color: var(--accent-light);
}
.brand-tagline {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.08em;
}
.nav-group-title {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0 14px;
  margin: 18px 0 10px;
}
.nav-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}
.nav-link .nav-icon {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 14px;
  transition: var(--transition);
}
.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}
.nav-link:hover .nav-icon {
  background: rgba(200, 160, 78, 0.25);
  color: var(--accent-light);
}
.nav-link.active {
  color: #fff;
  background: linear-gradient(90deg, rgba(200, 160, 78, 0.25), rgba(200, 160, 78, 0.08));
  font-weight: 600;
}
.nav-link.active .nav-icon {
  background: var(--accent);
  color: var(--primary-dark);
}
.nav-footer {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
}
.nav-footer p {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-footer i {
  color: var(--accent);
}
.site-main {
  margin-left: 260px;
  min-height: 100vh;
}
.mobile-topbar {
  display: none;
}
.site-overlay {
  display: none;
}
/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(115deg, rgba(6, 26, 51, 0.94) 0%, rgba(11, 37, 69, 0.82) 55%, rgba(19, 49, 92, 0.68) 100%),
    url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: #fff;
  padding: 110px 0;
}
.hero-inner {
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 999px;
  background: rgba(200, 160, 78, 0.18);
  border: 1px solid rgba(200, 160, 78, 0.4);
  color: var(--accent-light);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}
.hero-title {
  font-size: clamp(2.6rem, 5.5vw, 4.4rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: 0.02em;
  margin-bottom: 22px;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}
.hero-subtitle {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 44px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
}
.hero-meta li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}
.hero-meta li i {
  color: var(--accent);
  font-size: 15px;
}
/* ============ Features ============ */
.section-features {
  background: var(--white);
}
.feature-card {
  height: 100%;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  text-align: left;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 22px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  transform: rotate(-6deg) scale(1.05);
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}
.feature-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
}
/* ============ Showcase ============ */
.section-showcase {
  background: var(--bg-light);
}
.showcase-grid {
  display: flex;
  align-items: center;
  gap: 60px;
}
.showcase-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.showcase-img {
  width: 100%;
  min-height: 340px;
  object-fit: cover;
}
.showcase-float-card {
  position: absolute;
  left: 20px;
  bottom: 20px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-md);
}
.float-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(46, 160, 90, 0.12);
  color: #1fa75c;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.showcase-float-card strong {
  display: block;
  font-size: 15px;
  color: var(--primary);
}
.showcase-float-card p {
  font-size: 12px;
  color: var(--text-sub);
}
.showcase-content {
  padding: 20px 0;
}
.showcase-content .section-eyebrow {
  margin-bottom: 16px;
}
.showcase-content h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: 18px;
}
.showcase-content p {
  color: var(--text-sub);
  line-height: 1.9;
  margin-bottom: 24px;
}
.check-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
}
.check-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: var(--text-main);
  font-weight: 500;
}
.check-list li i {
  color: var(--accent);
  font-size: 16px;
  flex-shrink: 0;
}
/* ============ Categories ============ */
.section-categories {
  background: var(--white);
}
.category-card {
  display: block;
  height: 100%;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.category-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.category-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.category-card:hover .category-img-wrap img {
  transform: scale(1.08);
}
.category-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-sm);
}
.category-body {
  padding: 24px;
}
.category-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.category-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 18px;
}
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-dark);
}
.category-link i {
  transition: transform 0.3s ease;
}
.category-card:hover .category-link i {
  transform: translateX(5px);
}
/* ============ News Section ============ */
.section-news {
  background: var(--bg-light);
}
.news-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  border-left: 4px solid transparent;
}
.news-card:hover {
  box-shadow: var(--shadow-md);
  border-left-color: var(--accent);
  transform: translateY(-4px);
}
.news-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.news-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(200, 160, 78, 0.12);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.news-date {
  font-size: 13px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}
.news-more i {
  transition: transform 0.3s ease;
  font-size: 12px;
}
.news-card:hover .news-more i {
  transform: translateX(5px);
}
.news-empty {
  padding: 60px;
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  color: var(--text-sub);
  font-size: 16px;
}
/* ============ Process ============ */
.section-process {
  background: var(--white);
}
.process-step {
  position: relative;
  height: 100%;
  padding: 40px 28px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.process-step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.step-num {
  display: inline-block;
  font-size: 32px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.process-step h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
}
/* ============ Stats ============ */
.section-stats {
  background:
    linear-gradient(135deg, rgba(11, 37, 69, 0.93), rgba(6, 26, 51, 0.88)),
    url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  padding: 80px 0;
}
.stats-grid {
  display: flex;
  flex-wrap: wrap;
}
.stat-item {
  text-align: center;
  padding: 30px 20px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.stat-item:hover {
  background: rgba(255, 255, 255, 0.06);
}
.stat-num {
  display: block;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  color: var(--accent-light);
  line-height: 1.2;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
}
/* ============ FAQ ============ */
.section-faq {
  background: var(--white);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  box-shadow: var(--shadow-md);
  border-color: rgba(200, 160, 78, 0.4);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  text-align: left;
  transition: var(--transition);
}
.faq-question::after {
  content: '+';
  font-size: 24px;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}
.faq-answer {
  display: none;
  padding: 0 28px 22px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.85;
}
.faq-answer p {
  padding-top: 4px;
}
/* ============ CTA ============ */
.section-cta {
  background: var(--bg-light);
  padding: 80px 0;
}
.cta-box {
  position: relative;
  background:
    linear-gradient(120deg, var(--primary-dark) 0%, var(--primary) 70%, var(--primary-light) 100%);
  border-radius: 28px;
  padding: 72px 56px;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  opacity: 0.18;
  pointer-events: none;
}
.cta-box h2 {
  position: relative;
  color: #fff;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 18px;
}
.cta-box p {
  position: relative;
  color: rgba(255, 255, 255, 0.8);
  max-width: 640px;
  margin: 0 auto 36px;
  font-size: 16px;
  line-height: 1.85;
}
.cta-box .btn {
  position: relative;
}
/* ============ Footer ============ */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.72);
  padding: 70px 0 30px;
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 28px;
}
.footer-brand .footer-logo {
  display: inline-block;
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand .footer-logo:hover {
  color: var(--accent-light);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.6);
  max-width: 360px;
}
.site-footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--accent-light);
  padding-left: 5px;
}
.footer-tip {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.55);
}
.footer-tip i {
  color: var(--accent);
  margin-right: 6px;
}
.footer-bottom {
  text-align: center;
  padding-top: 24px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom a:hover {
  color: var(--accent-light);
}
/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .site-nav {
    width: 240px;
  }
  .site-main {
    margin-left: 240px;
  }
  .section {
    padding: 80px 0;
  }
}
@media (max-width: 900px) {
  .mobile-topbar {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    z-index: 300;
    background: var(--primary);
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    box-shadow: 0 4px 20px rgba(11, 37, 69, 0.2);
  }
  .mobile-brand {
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    white-space: nowrap;
  }
  .menu-toggle {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
  }
  .menu-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
  }
  .site-nav {
    width: 280px;
    transform: translateX(-100%);
    z-index: 400;
    box-shadow: 8px 0 32px rgba(0, 0, 0, 0.2);
  }
  .site-nav.open {
    transform: translateX(0);
  }
  .site-main {
    margin-left: 0;
    padding-top: 64px;
  }
  .site-overlay.show {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(6, 26, 51, 0.55);
    backdrop-filter: blur(2px);
    z-index: 350;
  }
  .hero {
    min-height: 500px;
    padding: 80px 0;
  }
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }
  .showcase-grid {
    gap: 40px;
    flex-direction: column;
  }
  .showcase-content {
    padding: 0;
  }
}
@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .section-header {
    margin-bottom: 40px;
  }
  .news-list {
    grid-template-columns: 1fr;
  }
  .cta-box {
    padding: 48px 24px;
    border-radius: 20px;
  }
  .cta-box .btn {
    width: 100%;
    max-width: 300px;
  }
  .stats-grid .cell {
    flex: 0 0 50%;
    max-width: 50%;
  }
  .stat-item {
    padding: 20px 12px;
  }
  .hero-title {
    font-size: clamp(2rem, 7vw, 2.8rem);
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .footer-grid {
    gap: 32px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .section {
    padding: 54px 0;
  }
  .hero {
    min-height: 460px;
    padding: 64px 0;
  }
  .hero-badge {
    font-size: 12px;
    padding: 6px 14px;
  }
  .hero-meta {
    gap: 16px;
  }
  .hero-meta li {
    font-size: 13px;
  }
  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }
  .faq-answer {
    padding: 0 20px 18px;
    font-size: 14px;
  }
  .cta-box {
    padding: 40px 20px;
  }
  .cta-box p {
    font-size: 15px;
  }
  .btn-lg {
    padding: 14px 32px;
    font-size: 16px;
  }
  .category-body {
    padding: 20px;
  }
  .footer-bottom {
    font-size: 13px;
  }
}

/* roulang page: category1 */
:root {
        --primary: #0a1a2f;
        --primary-light: #16294a;
        --accent: #c9a227;
        --accent-hover: #b8921f;
        --accent-light: rgba(201, 162, 39, .14);
        --bg: #f5f7fb;
        --surface: #ffffff;
        --text: #1c2430;
        --muted: #5f6b7a;
        --border: #dfe5ef;
        --radius: 16px;
        --radius-sm: 10px;
        --shadow: 0 12px 35px rgba(10, 26, 47, .08);
        --shadow-lg: 0 24px 60px rgba(10, 26, 47, .16);
        --transition: all .3s ease;
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.75;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: var(--transition);
    }
    img {
        max-width: 100%;
        display: block;
    }
    ul,
    ol {
        list-style: none;
    }
    button,
    input,
    textarea {
        font-family: inherit;
        font-size: inherit;
        border: none;
        background: none;
    }
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 32px;
    }
    .cell {
        margin-bottom: 24px;
    }
    .grid-margin-x>.cell {
        margin-bottom: 24px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        padding: 13px 30px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 15px;
        line-height: 1.4;
        cursor: pointer;
        transition: var(--transition);
        border: 2px solid transparent;
        white-space: nowrap;
    }
    .btn-primary {
        background: var(--accent);
        color: #0a1a2f;
        box-shadow: 0 8px 24px rgba(201, 162, 39, .3);
    }
    .btn-primary:hover {
        background: var(--accent-hover);
        transform: translateY(-2px);
        box-shadow: 0 12px 30px rgba(201, 162, 39, .4);
    }
    .btn-ghost {
        background: rgba(255, 255, 255, .08);
        color: #fff;
        border-color: rgba(255, 255, 255, .35);
        backdrop-filter: blur(6px);
    }
    .btn-ghost:hover {
        background: rgba(255, 255, 255, .18);
        transform: translateY(-2px);
    }
    .btn-outline {
        background: transparent;
        color: var(--primary);
        border-color: var(--primary);
    }
    .btn-outline:hover {
        background: var(--primary);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 10px 24px rgba(10, 26, 47, .2);
    }
    .btn-light {
        background: #fff;
        color: var(--primary);
        box-shadow: 0 8px 24px rgba(10, 26, 47, .14);
    }
    .btn-light:hover {
        transform: translateY(-2px);
        box-shadow: 0 14px 34px rgba(10, 26, 47, .22);
    }
    /* ===== Sidebar ===== */
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: 280px;
        background: linear-gradient(180deg, #0a1a2f 0%, #0d1f3a 100%);
        z-index: 1080;
        display: flex;
        flex-direction: column;
        transition: transform .4s cubic-bezier(.25, .8, .25, 1);
    }
    .sidebar-brand {
        padding: 36px 28px 24px;
        border-bottom: 1px solid rgba(255, 255, 255, .07);
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 14px;
        color: #fff;
    }
    .brand-icon {
        width: 46px;
        height: 46px;
        border-radius: 14px;
        background: linear-gradient(135deg, var(--accent), #e8c167);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        color: #0a1a2f;
        box-shadow: 0 8px 24px rgba(201, 162, 39, .28);
        flex-shrink: 0;
    }
    .brand-text {
        font-size: 17px;
        font-weight: 800;
        line-height: 1.35;
        letter-spacing: .5px;
    }
    .brand-desc {
        display: block;
        color: rgba(255, 255, 255, .45);
        font-size: 11px;
        letter-spacing: 3px;
        text-transform: uppercase;
        margin-top: 14px;
        padding-left: 60px;
    }
    .sidebar-nav {
        flex: 1;
        overflow-y: auto;
        padding: 20px 0;
    }
    .sidebar-nav::-webkit-scrollbar {
        width: 4px;
    }
    .sidebar-nav::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, .15);
        border-radius: 4px;
    }
    .nav-links {
        display: flex;
        flex-direction: column;
        gap: 4px;
        padding: 0 18px;
    }
    .nav-group-title {
        color: rgba(255, 255, 255, .32);
        font-size: 11px;
        letter-spacing: 3px;
        text-transform: uppercase;
        padding: 20px 14px 8px;
        font-weight: 700;
    }
    .nav-link {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 14px;
        border-radius: 12px;
        color: rgba(255, 255, 255, .66);
        font-size: 15px;
        font-weight: 500;
        transition: var(--transition);
        position: relative;
    }
    .nav-link:hover {
        background: rgba(255, 255, 255, .06);
        color: #fff;
        transform: translateX(3px);
    }
    .nav-link.active {
        background: var(--accent-light);
        color: #e8c167;
        font-weight: 600;
    }
    .nav-link.active::before {
        content: '';
        position: absolute;
        left: -18px;
        top: 12px;
        bottom: 12px;
        width: 4px;
        border-radius: 0 4px 4px 0;
        background: var(--accent);
    }
    .nav-icon {
        width: 24px;
        text-align: center;
        font-size: 16px;
        opacity: .9;
    }
    .sidebar-footer {
        padding: 22px 28px;
        border-top: 1px solid rgba(255, 255, 255, .06);
        color: rgba(255, 255, 255, .4);
        font-size: 13px;
        line-height: 1.7;
    }
    .sidebar-footer a {
        color: #e8c167;
    }
    .sidebar-footer a:hover {
        color: #fff;
    }
    /* ===== Mobile Topbar ===== */
    .mobile-topbar {
        display: none;
        position: sticky;
        top: 0;
        z-index: 1090;
        background: #0a1a2f;
        padding: 14px 20px;
        align-items: center;
        justify-content: space-between;
        box-shadow: 0 4px 20px rgba(0, 0, 0, .25);
    }
    .mobile-logo {
        color: #fff;
        font-size: 15px;
        font-weight: 800;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .mobile-logo i {
        color: var(--accent);
        font-size: 18px;
    }
    .mobile-menu-toggle {
        width: 42px;
        height: 42px;
        border-radius: 12px;
        background: rgba(255, 255, 255, .1);
        color: #fff;
        font-size: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: var(--transition);
    }
    .mobile-menu-toggle:hover {
        background: rgba(255, 255, 255, .2);
    }
    .sidebar-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, .5);
        z-index: 1070;
        opacity: 0;
        transition: opacity .3s;
    }
    .sidebar-backdrop.show {
        opacity: 1;
    }
    /* ===== Main Layout ===== */
    .main-wrapper {
        margin-left: 280px;
        min-height: 100vh;
    }
    /* ===== Hero ===== */
    .category-hero {
        position: relative;
        min-height: 62vh;
        display: flex;
        align-items: center;
        overflow: hidden;
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
        z-index: 0;
    }
    .hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(115deg, rgba(10, 26, 47, .92) 0%, rgba(10, 26, 47, .68) 50%, rgba(10, 26, 47, .35) 100%);
        z-index: 1;
    }
    .hero-content {
        position: relative;
        z-index: 2;
        padding: 80px 0;
        max-width: 640px;
    }
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(255, 255, 255, .12);
        border: 1px solid rgba(255, 255, 255, .2);
        color: #e8c167;
        font-size: 12px;
        font-weight: 700;
        letter-spacing: 3px;
        text-transform: uppercase;
        padding: 8px 18px;
        border-radius: 50px;
        margin-bottom: 24px;
        backdrop-filter: blur(8px);
    }
    .hero-content h1 {
        font-size: clamp(36px, 5vw, 56px);
        font-weight: 900;
        color: #fff;
        line-height: 1.2;
        letter-spacing: 2px;
        margin-bottom: 18px;
    }
    .hero-content h1 span {
        color: #e8c167;
    }
    .hero-content p {
        color: rgba(255, 255, 255, .75);
        font-size: 17px;
        line-height: 1.8;
        margin-bottom: 32px;
    }
    .hero-actions {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }
    /* ===== Info Bar ===== */
    .info-bar {
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        padding: 32px 0;
    }
    .info-bar .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        text-align: center;
    }
    .stat-item {
        padding: 12px 8px;
    }
    .stat-num {
        font-size: 34px;
        font-weight: 900;
        color: var(--primary);
        line-height: 1.1;
        letter-spacing: 1px;
    }
    .stat-num em {
        font-style: normal;
        color: var(--accent);
    }
    .stat-label {
        font-size: 14px;
        color: var(--muted);
        margin-top: 8px;
        letter-spacing: 1px;
    }
    /* ===== Section 通用 ===== */
    .section {
        padding: 90px 0;
    }
    .section-alt {
        background: var(--surface);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }
    .section-dark {
        background: linear-gradient(135deg, #0a1a2f 0%, #122a4a 100%);
        color: #fff;
    }
    .section-head {
        text-align: center;
        max-width: 680px;
        margin: 0 auto 56px;
    }
    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 12px;
        font-weight: 700;
        letter-spacing: 4px;
        text-transform: uppercase;
        color: var(--accent);
        background: var(--accent-light);
        padding: 6px 16px;
        border-radius: 50px;
        margin-bottom: 16px;
    }
    .section-head h2 {
        font-size: clamp(28px, 4vw, 40px);
        font-weight: 800;
        color: var(--text);
        line-height: 1.3;
        margin-bottom: 14px;
    }
    .section-head p {
        color: var(--muted);
        font-size: 16px;
    }
    .section-dark .section-head h2 {
        color: #fff;
    }
    .section-dark .section-head p {
        color: rgba(255, 255, 255, .6);
    }
    /* ===== Entry Cards ===== */
    .entry-card {
        background: var(--surface);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        border: 1px solid var(--border);
        transition: var(--transition);
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    .entry-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-lg);
    }
    .entry-image {
        height: 210px;
        overflow: hidden;
        position: relative;
    }
    .entry-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s ease;
    }
    .entry-card:hover .entry-image img {
        transform: scale(1.06);
    }
    .entry-image::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(10, 26, 47, .35), transparent 60%);
    }
    .entry-body {
        padding: 30px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .entry-tag {
        display: inline-flex;
        align-self: flex-start;
        background: var(--accent-light);
        color: var(--accent-hover);
        font-size: 12px;
        font-weight: 700;
        letter-spacing: 1px;
        padding: 4px 14px;
        border-radius: 50px;
        margin-bottom: 14px;
    }
    .entry-body h3 {
        font-size: 22px;
        font-weight: 800;
        color: var(--text);
        margin-bottom: 10px;
        line-height: 1.4;
    }
    .entry-body p {
        color: var(--muted);
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 18px;
        flex: 1;
    }
    .entry-list {
        margin-bottom: 20px;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    .entry-list li {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 14px;
        color: var(--text);
    }
    .entry-list li::before {
        content: '\f00c';
        font-family: 'Font Awesome 6 Free';
        font-weight: 900;
        font-size: 12px;
        color: var(--accent);
        background: var(--accent-light);
        width: 22px;
        height: 22px;
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }
    .entry-body .btn {
        align-self: flex-start;
        margin-top: auto;
    }
    /* ===== Steps ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 28px;
        position: relative;
    }
    .steps-grid::before {
        content: '';
        position: absolute;
        top: 32px;
        left: 10%;
        right: 10%;
        height: 2px;
        background: linear-gradient(90deg, var(--accent), rgba(201, 162, 39, .2));
        z-index: 0;
    }
    .step-item {
        position: relative;
        z-index: 1;
        text-align: center;
        padding: 0 8px;
    }
    .step-num {
        width: 64px;
        height: 64px;
        margin: 0 auto 20px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--accent), #e8c167);
        color: #0a1a2f;
        font-size: 24px;
        font-weight: 900;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 10px 30px rgba(201, 162, 39, .3);
        position: relative;
    }
    .step-num::after {
        content: '';
        position: absolute;
        inset: -6px;
        border-radius: 50%;
        border: 2px dashed rgba(201, 162, 39, .4);
        animation: spin 24s linear infinite;
    }
    @keyframes spin {
        to {
            transform: rotate(360deg);
        }
    }
    .step-item h4 {
        font-size: 18px;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 8px;
    }
    .step-item p {
        font-size: 14px;
        color: var(--muted);
        line-height: 1.6;
    }
    /* ===== Tips Section ===== */
    .tips-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .tip-card {
        background: rgba(255, 255, 255, .05);
        border: 1px solid rgba(255, 255, 255, .1);
        border-radius: var(--radius);
        padding: 28px 24px;
        text-align: center;
        transition: var(--transition);
    }
    .tip-card:hover {
        background: rgba(255, 255, 255, .09);
        transform: translateY(-5px);
        border-color: rgba(201, 162, 39, .35);
    }
    .tip-icon {
        width: 54px;
        height: 54px;
        margin: 0 auto 18px;
        border-radius: 16px;
        background: var(--accent-light);
        color: #e8c167;
        font-size: 22px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .tip-card h4 {
        font-size: 16px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 10px;
    }
    .tip-card p {
        font-size: 13px;
        color: rgba(255, 255, 255, .55);
        line-height: 1.6;
    }
    /* ===== FAQ ===== */
    .faq-list {
        max-width: 820px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    .faq-item {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover {
        border-color: rgba(201, 162, 39, .4);
        box-shadow: var(--shadow);
    }
    .faq-q {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 22px 28px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text);
        cursor: pointer;
        user-select: none;
    }
    .faq-q .faq-icon {
        width: 34px;
        height: 34px;
        border-radius: 50%;
        background: var(--accent-light);
        color: var(--accent-hover);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
        flex-shrink: 0;
        transition: var(--transition);
    }
    .faq-item.open .faq-icon {
        transform: rotate(45deg);
        background: var(--accent);
        color: #fff;
    }
    .faq-a {
        display: none;
        padding: 0 28px 24px;
        color: var(--muted);
        font-size: 15px;
        line-height: 1.8;
        border-top: 1px solid transparent;
    }
    .faq-item.open .faq-a {
        display: block;
        border-top-color: var(--border);
        padding-top: 20px;
    }
    /* ===== CTA ===== */
    .cta-section {
        padding: 0 0 90px;
    }
    .cta-box {
        position: relative;
        background: linear-gradient(135deg, #0a1a2f 0%, #152d50 100%);
        border-radius: 24px;
        padding: 60px 48px;
        overflow: hidden;
        text-align: center;
    }
    .cta-box::before {
        content: '';
        position: absolute;
        top: -80px;
        right: -80px;
        width: 260px;
        height: 260px;
        border-radius: 50%;
        border: 2px solid rgba(201, 162, 39, .2);
    }
    .cta-box::after {
        content: '';
        position: absolute;
        bottom: -60px;
        left: -60px;
        width: 180px;
        height: 180px;
        border-radius: 50%;
        border: 2px solid rgba(255, 255, 255, .08);
    }
    .cta-title {
        font-size: clamp(28px, 4vw, 38px);
        font-weight: 800;
        color: #fff;
        margin-bottom: 12px;
        position: relative;
        z-index: 2;
    }
    .cta-subtitle {
        color: rgba(255, 255, 255, .65);
        font-size: 16px;
        margin-bottom: 30px;
        position: relative;
        z-index: 2;
    }
    .cta-actions {
        display: flex;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
        position: relative;
        z-index: 2;
    }
    /* ===== Footer ===== */
    .site-footer {
        background: #081426;
        color: rgba(255, 255, 255, .7);
        padding: 64px 0 32px;
    }
    .footer-grid {
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, .08);
    }
    .footer-brand {
        padding-right: 30px;
    }
    .footer-logo {
        display: inline-block;
        font-size: 22px;
        font-weight: 800;
        color: #fff;
        letter-spacing: 1px;
        margin-bottom: 14px;
    }
    .footer-brand p {
        color: rgba(255, 255, 255, .5);
        font-size: 14px;
        line-height: 1.8;
        max-width: 360px;
    }
    .site-footer h4 {
        color: #fff;
        font-size: 15px;
        font-weight: 700;
        margin-bottom: 18px;
        letter-spacing: 1px;
    }
    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .footer-links a {
        color: rgba(255, 255, 255, .55);
        font-size: 14px;
    }
    .footer-links a:hover {
        color: #e8c167;
        padding-left: 4px;
    }
    .footer-tip {
        color: rgba(255, 255, 255, .5);
        font-size: 14px;
        line-height: 1.8;
        background: rgba(255, 255, 255, .04);
        padding: 14px 18px;
        border-radius: 12px;
        border-left: 3px solid var(--accent);
    }
    .footer-tip i {
        color: var(--accent);
        margin-right: 6px;
    }
    .footer-bottom {
        text-align: center;
        padding-top: 28px;
        color: rgba(255, 255, 255, .35);
        font-size: 13px;
    }
    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .sidebar {
            width: 240px;
        }
        .main-wrapper {
            margin-left: 240px;
        }
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .steps-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 36px;
        }
        .steps-grid::before {
            display: none;
        }
        .tips-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 768px) {
        .sidebar {
            transform: translateX(-100%);
            width: 280px;
        }
        .sidebar.sidebar-open {
            transform: translateX(0);
            box-shadow: 20px 0 60px rgba(0, 0, 0, .3);
        }
        .mobile-topbar {
            display: flex;
        }
        .sidebar-backdrop.show {
            display: block;
        }
        .main-wrapper {
            margin-left: 0;
        }
        .container {
            padding: 0 20px;
        }
        .section {
            padding: 60px 0;
        }
        .hero-content {
            padding: 60px 0;
        }
        .info-bar .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .cta-box {
            padding: 40px 28px;
        }
        .footer-grid {
            gap: 20px;
        }
    }
    @media (max-width: 520px) {
        .hero-content h1 {
            font-size: 32px;
        }
        .hero-content p {
            font-size: 15px;
        }
        .hero-actions {
            flex-direction: column;
            width: 100%;
        }
        .hero-actions .btn {
            width: 100%;
        }
        .steps-grid {
            grid-template-columns: 1fr;
        }
        .tips-grid {
            grid-template-columns: 1fr;
        }
        .stats-grid {
            grid-template-columns: 1fr 1fr;
        }
        .stat-num {
            font-size: 26px;
        }
        .section-head {
            margin-bottom: 40px;
        }
        .cta-actions {
            flex-direction: column;
        }
        .cta-actions .btn {
            width: 100%;
        }
    }

/* roulang page: article */
:root {
    --primary: #0f4c81;
    --primary-dark: #0a3558;
    --primary-light: #e8f0f9;
    --accent: #e8a13d;
    --accent-dark: #c7821f;
    --accent-light: #fdf3e3;
    --bg: #f5f8fc;
    --surface: #ffffff;
    --text: #17293d;
    --text-weak: #5d7089;
    --muted: #8b9bad;
    --border: #e0e9f2;
    --radius: 18px;
    --radius-sm: 12px;
    --shadow: 0 8px 24px rgba(15, 76, 129, 0.08);
    --shadow-lg: 0 20px 45px rgba(15, 76, 129, 0.15);
    --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}

/* ===== 按钮与徽章 ===== */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    line-height: 1.2;
    background: transparent;
    color: var(--text);
}
.button.primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.button.primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(15, 76, 129, 0.25);
    color: #fff;
}
.button.primary:active { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(15, 76, 129, 0.2); }
.button.outline {
    border-color: var(--border);
    color: var(--text);
    background: var(--surface);
}
.button.outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}
.button.outline:active { transform: translateY(-1px); }
.button.white {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}
.button.white:hover {
    background: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(255, 255, 255, 0.2);
    color: var(--primary-dark);
}
.button:focus-visible, .nav-link:focus-visible, .faq-question:focus-visible, .menu-toggle:focus-visible {
    outline: 3px solid rgba(232, 161, 61, 0.6);
    outline-offset: 2px;
}
.badge {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid rgba(15, 76, 129, 0.12);
    letter-spacing: 0.3px;
}
.badge.accent {
    background: var(--accent-light);
    color: var(--accent-dark);
    border-color: rgba(232, 161, 61, 0.2);
}

/* ===== 应用外壳 ===== */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: linear-gradient(180deg, #081f33 0%, #0f4c81 100%);
    color: #fff;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: 4px 0 24px rgba(8, 31, 51, 0.25);
}
.sidebar-inner { display: flex; flex-direction: column; height: 100%; padding: 28px 0 20px; }
.brand {
    padding: 0 24px;
    margin-bottom: 32px;
}
.brand-logo {
    display: inline-block;
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 1px;
    line-height: 1.5;
    position: relative;
    padding-bottom: 10px;
}
.brand-logo::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 42px;
    height: 3px;
    background: var(--accent);
    border-radius: 99px;
}
.brand-logo:hover { color: var(--accent); }
.brand-sub {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 8px;
    letter-spacing: 2px;
}
.sidebar .nav-links { flex: 1; padding: 0 16px; }
.nav-group-title {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.4);
    padding: 18px 12px 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 12px;
}
.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.92rem;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 4px;
}
.nav-link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    transform: translateX(4px);
}
.nav-link.active {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    font-weight: 600;
    box-shadow: inset 3px 0 0 var(--accent);
}
.nav-icon {
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9px;
    background: rgba(255, 255, 255, 0.08);
    font-size: 0.85rem;
    flex-shrink: 0;
}
.nav-link.active .nav-icon {
    background: var(--accent);
    color: #081f33;
}
.sidebar-footer {
    padding: 20px 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.45);
    line-height: 1.6;
}
.sidebar-footer p { margin-bottom: 4px; }

/* ===== 侧边栏遮罩 ===== */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(8, 20, 35, 0.5);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.sidebar-overlay.active { opacity: 1; visibility: visible; }

/* ===== 主内容区 ===== */
.main-wrapper {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===== 移动端顶栏 ===== */
.mobile-topbar {
    display: none;
    position: sticky;
    top: 0;
    z-index: 1030;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background: #081f33;
    box-shadow: 0 4px 16px rgba(8, 31, 51, 0.2);
}
.mobile-topbar .brand-logo {
    font-size: 1rem;
    padding-bottom: 6px;
    color: #fff;
}
.mobile-topbar .brand-logo::after { width: 28px; height: 2px; }
.menu-toggle {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.menu-toggle:hover { background: rgba(255, 255, 255, 0.2); }

/* ===== 文章头部 Hero ===== */
.article-hero {
    position: relative;
    padding: 90px 0 70px;
    background: linear-gradient(135deg, rgba(8, 31, 51, 0.92) 0%, rgba(15, 76, 129, 0.82) 100%),
        url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    color: #fff;
    border-bottom: 4px solid var(--accent);
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.82rem;
    margin-bottom: 22px;
    color: rgba(255, 255, 255, 0.6);
}
.breadcrumb a { color: rgba(255, 255, 255, 0.75); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(255, 255, 255, 0.35); }
.breadcrumb .current { color: rgba(255, 255, 255, 0.9); }
.article-heading .badge { margin-bottom: 16px; }
.article-heading h1 {
    font-size: 2.4rem;
    line-height: 1.3;
    font-weight: 800;
    margin-bottom: 18px;
    max-width: 800px;
    letter-spacing: 0.5px;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 22px;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.7);
}
.article-meta span { display: inline-flex; align-items: center; gap: 8px; }
.article-meta i { color: var(--accent); }

/* ===== 文章主体 ===== */
.article-layout { padding: 60px 0 30px; }
.article-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 44px 48px;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.article-card:hover { box-shadow: var(--shadow-lg); }

/* ===== 文章正文排版 ===== */
.article-content { font-size: 1rem; color: var(--text); }
.article-content p {
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 1.4em;
    color: #223850;
}
.article-content h2 {
    font-size: 1.55rem;
    font-weight: 700;
    margin: 1.8em 0 0.8em;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-light);
    color: var(--primary-dark);
}
.article-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 1.4em 0 0.6em;
    color: var(--text);
}
.article-content ul, .article-content ol {
    margin: 0 0 1.4em;
    padding-left: 22px;
}
.article-content ul li {
    list-style: disc;
    margin-bottom: 8px;
    line-height: 1.8;
}
.article-content ol li {
    list-style: decimal;
    margin-bottom: 8px;
    line-height: 1.8;
}
.article-content blockquote {
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    padding: 18px 24px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 1.5em 0;
    font-style: italic;
    color: var(--text);
}
.article-content img {
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    margin: 1.2em 0;
}
.article-content a { text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { text-decoration: none; color: var(--accent-dark); }
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 0.95rem;
}
.article-content table th, .article-content table td {
    border: 1px solid var(--border);
    padding: 12px 16px;
    text-align: left;
}
.article-content table th {
    background: var(--primary-light);
    color: var(--primary-dark);
    font-weight: 600;
}

/* ===== 未找到卡片 ===== */
.not-found-box {
    text-align: center;
    padding: 40px 20px;
}
.not-found-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary);
}
.not-found-box h2 { font-size: 1.6rem; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.not-found-box p { color: var(--text-weak); margin-bottom: 24px; }

/* ===== 侧栏组件 ===== */
.sidebar-widgets .widget {
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 28px;
    margin-bottom: 24px;
    transition: var(--transition);
}
.sidebar-widgets .widget:hover { box-shadow: var(--shadow-lg); }
.widget-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-light);
    display: flex;
    align-items: center;
    gap: 8px;
}
.widget-title i { color: var(--accent); }
.widget-list li { margin-bottom: 14px; }
.widget-list a {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text);
    font-size: 0.9rem;
    line-height: 1.5;
}
.widget-list a:hover { color: var(--primary); }
.widget-list .list-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
    margin-top: 2px;
}
.widget-list .w-title { font-weight: 600; }
.widget-list .w-date { font-size: 0.76rem; color: var(--muted); }
.widget-tip {
    background: var(--accent-light);
    border: 1px solid rgba(232, 161, 61, 0.2);
    border-radius: var(--radius-sm);
    padding: 18px;
    font-size: 0.9rem;
    color: #67502a;
    margin-top: 14px;
    line-height: 1.7;
}
.widget-tip i { color: var(--accent); margin-right: 6px; }
.widget-cta { text-align: center; }
.widget-cta .button { width: 100%; margin-top: 8px; }

/* ===== 板块间距与标题 ===== */
.section-block { padding: 70px 0; }
.section-head { margin-bottom: 44px; max-width: 720px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent-dark);
    background: var(--accent-light);
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.section-head h2 {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.35;
    color: var(--text);
    margin-bottom: 12px;
}
.section-head p {
    font-size: 1rem;
    color: var(--text-weak);
    line-height: 1.7;
}
.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    border: none;
    margin: 0;
}

/* ===== 入口指引卡 ===== */
.guide-section {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 70px 0;
}
.guide-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 34px 28px;
    height: 100%;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.guide-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.guide-card:hover::before { transform: scaleX(1); }
.guide-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgba(15, 76, 129, 0.2);
}
.guide-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.guide-card p { font-size: 0.92rem; color: var(--text-weak); line-height: 1.7; margin-bottom: 18px; }
.text-link {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}
.text-link:hover { gap: 12px; color: var(--accent-dark); }

/* ===== 相关文章 ===== */
.related-section { background: var(--bg); padding: 70px 0; }
.post-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.post-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.post-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.post-thumb {
    height: 190px;
    background-size: cover;
    background-position: center;
    position: relative;
}
.post-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(8, 31, 51, 0.6) 100%);
    opacity: 0.7;
    transition: var(--transition);
}
.post-card:hover .post-thumb::after { opacity: 1; }
.post-thumb .badge {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary);
}
.post-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.post-card-body h3 { font-size: 1.05rem; font-weight: 700; line-height: 1.5; margin-bottom: 10px; }
.post-card-body h3 a { color: var(--text); }
.post-card-body h3 a:hover { color: var(--primary); }
.post-card-body p { font-size: 0.88rem; color: var(--text-weak); line-height: 1.65; flex: 1; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-meta { font-size: 0.76rem; color: var(--muted); display: flex; justify-content: space-between; align-items: center; padding-top: 14px; border-top: 1px solid var(--border); }
.post-meta i { margin-right: 4px; color: var(--accent); }
.empty-tip {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-weak);
    font-size: 0.95rem;
    padding: 40px;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px dashed var(--border);
}

/* ===== FAQ ===== */
.faq-section {
    background: var(--surface);
    padding: 70px 0;
    border-top: 1px solid var(--border);
}
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover { border-color: rgba(15, 76, 129, 0.3); }
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 20px 24px;
    background: transparent;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
    font-family: inherit;
}
.faq-question i {
    color: var(--accent);
    font-size: 0.9rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}
.faq-item.active .faq-question i { transform: rotate(45deg); }
.faq-item.active { border-color: rgba(232, 161, 61, 0.4); box-shadow: var(--shadow); }
.faq-answer {
    display: none;
    padding: 0 24px 22px;
    color: var(--text-weak);
    font-size: 0.95rem;
    line-height: 1.8;
}
.faq-answer p { margin-bottom: 8px; }

/* ===== CTA ===== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(8, 31, 51, 0.95), rgba(15, 76, 129, 0.9)),
        url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    position: relative;
}
.cta-card {
    text-align: center;
    color: #fff;
    max-width: 760px;
    margin: 0 auto;
    padding: 30px;
}
.cta-card h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.cta-card p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 28px;
    line-height: 1.8;
}
.cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
}

/* ===== Footer ===== */
.site-footer {
    background: #081f33;
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
    border-top: 4px solid var(--accent);
}
.footer-grid { padding-bottom: 40px; }
.footer-brand .footer-logo {
    font-size: 1.2rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.5px;
    display: inline-block;
    margin-bottom: 16px;
}
.footer-brand .footer-logo:hover { color: var(--accent); }
.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.75;
    max-width: 380px;
    color: rgba(255, 255, 255, 0.6);
}
.site-footer h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: 1px;
    position: relative;
    padding-bottom: 10px;
}
.site-footer h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--accent);
    border-radius: 99px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.footer-links a:hover { color: var(--accent); transform: translateX(4px); }
.footer-tip {
    font-size: 0.88rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-tip i { color: var(--accent); margin-right: 8px; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 22px 0;
    text-align: center;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.4);
}
.footer-bottom p { margin-bottom: 0; }

/* ===== 响应式断点 ===== */
@media (max-width: 1100px) {
    .article-card { padding: 36px; }
    .post-grid { grid-template-columns: repeat(2, 1fr); }
    .article-heading h1 { font-size: 2rem; }
}

@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.35s ease;
        width: 280px;
    }
    .sidebar.open { transform: translateX(0); }
    .main-wrapper { margin-left: 0; }
    .mobile-topbar { display: flex; }
    .article-hero { padding: 60px 0 50px; }
    .article-hero h1 { font-size: 1.8rem; }
    .section-block, .guide-section, .related-section, .faq-section { padding: 55px 0; }
}

@media (max-width: 768px) {
    .article-layout { padding: 40px 0 20px; }
    .article-card { padding: 28px 24px; }
    .post-grid { grid-template-columns: 1fr; }
    .section-head h2 { font-size: 1.6rem; }
    .cta-card h2 { font-size: 1.6rem; }
    .cta-section { padding: 60px 0; }
    .footer-grid { display: block; }
    .site-footer .cell { margin-bottom: 28px; }
    .breadcrumb { font-size: 0.78rem; }
}

@media (max-width: 520px) {
    .container { padding-left: 18px; padding-right: 18px; }
    .article-card { padding: 22px 18px; border-radius: 14px; }
    .article-heading h1 { font-size: 1.5rem; }
    .article-meta { gap: 12px; font-size: 0.8rem; }
    .article-content p { font-size: 0.98rem; }
    .guide-card { padding: 26px 20px; }
    .section-head h2 { font-size: 1.4rem; }
    .cta-actions { flex-direction: column; align-items: stretch; }
    .cta-actions .button { width: 100%; }
    .not-found-box { padding: 24px 10px; }
}

/* roulang page: category2 */
:root {
  --primary: #0b1f3a;
  --primary-light: #16355a;
  --accent: #c9a05a;
  --accent-hover: #b8904a;
  --bg: #f7f5f2;
  --surface: #ffffff;
  --text: #1a2535;
  --text-weak: #6b7a90;
  --border: #e5e0d8;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(11, 31, 58, 0.08);
  --shadow-hover: 0 18px 40px rgba(11, 31, 58, 0.14);
  --space: 80px;
  --space-sm: 50px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
ul { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.site-layout { display: flex; min-height: 100vh; }
.side-nav {
  width: 272px;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  background: var(--primary);
  color: #fff;
  padding: 32px 22px 24px;
  display: flex;
  flex-direction: column;
  z-index: 200;
  overflow-y: auto;
  transition: box-shadow 0.3s;
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.08);
}
.side-nav::-webkit-scrollbar { width: 4px; }
.side-nav::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.15); border-radius: 4px; }
.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 10px 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 22px;
}
.brand-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), #e0c080);
  color: var(--primary);
  font-size: 20px;
  border-radius: 12px;
  box-shadow: 0 6px 16px rgba(201, 160, 90, 0.3);
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.5px;
  color: #fff;
}
.brand-text small { display: block; font-size: 12px; font-weight: 400; color: rgba(255, 255, 255, 0.5); margin-top: 2px; letter-spacing: 2px; }
.nav-group-title {
  display: block;
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
  padding: 20px 12px 8px;
  font-weight: 600;
}
.nav-links { display: flex; flex-direction: column; gap: 4px; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 12px 14px;
  border-radius: 12px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  font-weight: 500;
  transition: background 0.25s, color 0.25s, transform 0.25s;
}
.nav-link:hover { background: rgba(255, 255, 255, 0.07); color: #fff; transform: translateX(3px); }
.nav-link.active { background: var(--accent); color: var(--primary); font-weight: 700; box-shadow: 0 8px 20px rgba(201, 160, 90, 0.3); }
.nav-icon { width: 26px; text-align: center; font-size: 15px; }
.nav-toggle { display: none; }
.side-foot { margin-top: auto; padding: 20px 12px 0; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.side-stat { display: flex; align-items: center; gap: 10px; font-size: 13px; color: rgba(255, 255, 255, 0.55); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.15); }
.content-wrap { flex: 1; margin-left: 272px; min-width: 0; display: flex; flex-direction: column; }
.page-banner {
  position: relative;
  padding: 110px 0 90px;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  isolation: isolate;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11, 31, 58, 0.94) 0%, rgba(11, 31, 58, 0.72) 40%, rgba(11, 31, 58, 0.35) 100%);
  z-index: -1;
}
.page-banner::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg), transparent);
  z-index: 0;
}
.banner-content { position: relative; z-index: 1; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; font-size: 14px; color: rgba(255, 255, 255, 0.65); margin-bottom: 24px; }
.breadcrumb a { color: rgba(255, 255, 255, 0.65); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(255, 255, 255, 0.35); }
.breadcrumb .current { color: rgba(255, 255, 255, 0.95); }
.banner-eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.banner-title { font-size: 46px; font-weight: 800; line-height: 1.15; color: #fff; margin-bottom: 18px; letter-spacing: 1px; }
.banner-desc { font-size: 18px; line-height: 1.7; color: rgba(255, 255, 255, 0.8); max-width: 660px; }
.section { padding: var(--space) 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { text-align: center; margin-bottom: 50px; max-width: 720px; margin-left: auto; margin-right: auto; }
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 5px;
  color: var(--accent);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.section-title { font-size: 32px; font-weight: 800; color: var(--primary); line-height: 1.3; letter-spacing: 0.5px; }
.section-subtitle { font-size: 15px; color: var(--text-weak); margin-top: 10px; }
.section-head-left { text-align: left; margin-left: 0; margin-right: 0; }
.news-grid { row-gap: 30px; align-items: stretch; }
.news-col { margin-bottom: 0; }
.news-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s, box-shadow 0.35s;
  border: 1px solid rgba(255, 255, 255, 0.6);
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.news-cover-link { position: relative; display: block; overflow: hidden; aspect-ratio: 16/10; }
.news-cover { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.news-card:hover .news-cover { transform: scale(1.06); }
.news-tag {
  position: absolute;
  left: 16px;
  top: 16px;
  background: var(--accent);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 24px;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(201, 160, 90, 0.4);
}
.news-flap { position: absolute; right: 16px; top: 16px; width: 32px; height: 32px; background: rgba(11, 31, 58, 0.7); backdrop-filter: blur(6px); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 12px; }
.news-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; gap: 16px; font-size: 13px; color: var(--text-weak); margin-bottom: 12px; }
.news-meta span { display: inline-flex; align-items: center; gap: 5px; }
.news-title { font-size: 18px; font-weight: 700; line-height: 1.45; margin-bottom: 10px; color: var(--text); }
.news-title a:hover { color: var(--accent); }
.news-summary { font-size: 14px; color: var(--text-weak); margin-bottom: 18px; line-height: 1.75; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-more { font-size: 14px; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 8px; padding-top: 14px; border-top: 1px solid #f0ece6; }
.news-more:hover { gap: 14px; color: var(--accent); }
.notice-section { background: var(--primary); position: relative; overflow: hidden; }
.notice-section::before {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 160, 90, 0.16), transparent 70%);
  top: -120px;
  right: -80px;
}
.notice-panel { position: relative; z-index: 1; display: flex; gap: 50px; }
.notice-left { flex: 0 0 320px; }
.notice-left h2 { color: #fff; font-size: 28px; font-weight: 700; margin-bottom: 14px; line-height: 1.3; }
.notice-left p { color: rgba(255, 255, 255, 0.6); font-size: 15px; line-height: 1.7; }
.notice-list { flex: 1; }
.notice-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  margin-bottom: 10px;
  border-left: 3px solid var(--accent);
  transition: background 0.3s, transform 0.3s;
}
.notice-item:hover { background: rgba(255, 255, 255, 0.08); transform: translateX(4px); }
.notice-title { font-size: 15px; color: rgba(255, 255, 255, 0.9); }
.notice-date { font-size: 13px; color: rgba(255, 255, 255, 0.45); white-space: nowrap; margin-left: 20px; }
.topic-section { text-align: center; }
.tag-list { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 10px; }
.tag-item {
  padding: 11px 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 40px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  transition: all 0.3s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}
.tag-item:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-3px); box-shadow: 0 10px 24px rgba(11, 31, 58, 0.2); }
.tag-item .tag-count { font-size: 12px; opacity: 0.6; margin-left: 4px; }
.stats-section { background: linear-gradient(135deg, var(--primary-light), var(--primary)); padding: 70px 0; position: relative; overflow: hidden; }
.stats-section::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  top: -100px;
  left: -60px;
}
.stats-section::after {
  content: '';
  position: absolute;
  width: 160px;
  height: 160px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  bottom: -40px;
  right: 80px;
}
.stat-item { position: relative; text-align: center; padding: 20px 16px; }
.stat-item::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.stat-number {
  font-size: 44px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  font-family: Georgia, "Times New Roman", serif;
  letter-spacing: 2px;
}
.stat-label { font-size: 14px; color: rgba(255, 255, 255, 0.65); margin-top: 10px; letter-spacing: 1px; }
.faq-section { background: var(--surface); }
.faq-accordion { max-width: 860px; margin: 0 auto; }
.accordion-item { background: var(--bg) !important; border-radius: var(--radius-sm) !important; margin-bottom: 12px; border: 1px solid var(--border) !important; box-shadow: none !important; overflow: hidden; }
.accordion-item.is-active { border-color: var(--accent) !important; box-shadow: 0 8px 20px rgba(201, 160, 90, 0.12) !important; }
.accordion-title { background: transparent !important; color: var(--text) !important; font-size: 16px !important; font-weight: 600 !important; padding: 18px 22px !important; border-radius: 0 !important; line-height: 1.4 !important; }
.accordion-title::before { content: '\f078' !important; font-family: "Font Awesome 6 Free" !important; font-weight: 900; color: var(--accent) !important; font-size: 14px; }
.accordion-item.is-active .accordion-title { color: var(--primary) !important; }
.accordion-content { background: var(--surface) !important; border-top: 1px solid var(--border) !important; padding: 6px 22px 20px !important; color: var(--text-weak) !important; font-size: 15px !important; line-height: 1.8 !important; }
.cta-section { padding-bottom: var(--space); }
.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 28px;
  padding: 70px 60px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 160, 90, 0.25), transparent 70%);
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
}
.cta-title { font-size: 32px; font-weight: 800; letter-spacing: 1px; line-height: 1.4; position: relative; }
.cta-desc { color: rgba(255, 255, 255, 0.7); margin: 18px auto 36px; max-width: 560px; font-size: 16px; line-height: 1.8; position: relative; }
.cta-buttons { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; position: relative; }
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 15px;
  transition: all 0.3s;
}
.cta-btn-primary { background: var(--accent); color: var(--primary); }
.cta-btn-primary:hover { background: #e0c080; transform: translateY(-3px); box-shadow: 0 14px 30px rgba(201, 160, 90, 0.4); }
.cta-btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, 0.3); }
.cta-btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.6); transform: translateY(-3px); }
.site-footer { background: var(--primary); color: rgba(255, 255, 255, 0.7); padding: 60px 0 30px; margin-top: 0; }
.footer-brand .footer-logo { font-size: 24px; font-weight: 800; color: #fff; display: inline-flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-brand .footer-logo i { color: var(--accent); font-size: 22px; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 420px; }
.footer-links li a { color: rgba(255, 255, 255, 0.65); padding: 6px 0; display: inline-block; font-size: 14px; }
.footer-links li a:hover { color: var(--accent); padding-left: 4px; }
.footer-tip { font-size: 14px; line-height: 1.8; background: rgba(255, 255, 255, 0.04); padding: 16px 18px; border-radius: 12px; border-left: 2px solid var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); margin-top: 36px; padding-top: 24px; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.4); }
.footer-grid h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 14px; }
@media (max-width: 1024px) {
  :root { --space: 64px; }
  .side-nav { width: 220px; padding: 24px 16px; }
  .content-wrap { margin-left: 220px; }
  .brand-text { font-size: 18px; }
  .banner-title { font-size: 38px; }
  .notice-panel { flex-direction: column; gap: 30px; }
  .notice-left { flex: none; }
}
@media (max-width: 768px) {
  :root { --space: 56px; --space-sm: 36px; }
  .site-layout { flex-direction: column; }
  .side-nav {
    width: 100%;
    position: sticky;
    top: 0;
    height: auto;
    padding: 12px 20px;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    z-index: 300;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  }
  .brand-logo { padding: 0; margin: 0; border: none; }
  .brand-icon { width: 38px; height: 38px; font-size: 16px; border-radius: 10px; }
  .brand-text { font-size: 17px; }
  .brand-text small { display: none; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary);
    padding: 14px 20px 22px;
    flex-direction: column;
    gap: 2px;
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.2);
    border-radius: 0 0 16px 16px;
  }
  .nav-links.open { display: flex; }
  .nav-group-title { padding-top: 12px; }
  .nav-link:hover { transform: none; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: rgba(255, 255, 255, 0.08); border-radius: 10px; color: #fff; font-size: 18px; }
  .nav-toggle:hover { background: rgba(255, 255, 255, 0.15); }
  .side-foot { display: none; }
  .content-wrap { margin-left: 0; }
  .page-banner { padding: 80px 0 70px; }
  .banner-title { font-size: 32px; }
  .banner-desc { font-size: 16px; }
  .section-title { font-size: 26px; }
  .cta-box { padding: 50px 30px; border-radius: 20px; }
  .cta-title { font-size: 26px; }
  .stat-number { font-size: 34px; }
  .footer-grid h4 { font-size: 15px; }
}
@media (max-width: 520px) {
  .container { padding: 0 20px; }
  .page-banner { padding: 64px 0 56px; }
  .banner-title { font-size: 26px; }
  .banner-desc { font-size: 15px; }
  .banner-eyebrow { font-size: 12px; letter-spacing: 3px; }
  .section { padding: 44px 0; }
  .section-head { margin-bottom: 32px; }
  .section-title { font-size: 22px; }
  .news-body { padding: 20px; }
  .news-title { font-size: 16px; }
  .notice-item { flex-direction: column; align-items: flex-start; gap: 4px; padding: 14px 16px; }
  .notice-date { margin-left: 0; }
  .cta-box { padding: 40px 20px; }
  .cta-buttons { flex-direction: column; align-items: center; }
  .cta-btn { width: 100%; justify-content: center; }
  .stat-number { font-size: 30px; }
  .footer-grid .cell { margin-bottom: 24px; }
}

/* roulang page: category3 */
:root {
  --primary: #0b3d91;
  --primary-dark: #071f4a;
  --primary-light: #1a56c4;
  --accent: #d4a843;
  --accent-light: #e8c876;
  --bg-body: #f4f6fb;
  --bg-white: #ffffff;
  --bg-dark: #0d1b2a;
  --text-main: #1a2332;
  --text-muted: #5a6b7d;
  --text-light: #8899aa;
  --border: #e3e8ef;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(13,27,42,.06);
  --shadow-md: 0 6px 20px rgba(13,27,42,.08);
  --shadow-lg: 0 12px 32px rgba(13,27,42,.12);
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --transition: all .3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

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

/* ============ 侧边导航 ============ */
.nav-sidebar {
  width: 260px;
  min-height: 100vh;
  background: linear-gradient(180deg, #071f4a 0%, #0b3d91 55%, #0d4d9e 100%);
  position: fixed;
  left: 0; top: 0; bottom: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  padding: 28px 20px 20px;
  box-shadow: 4px 0 24px rgba(7,31,74,.25);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 4px 18px;
  border-bottom: 1px solid rgba(255,255,255,.12);
  margin-bottom: 18px;
}

.nav-logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #071f4a;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(212,168,67,.35);
}

.nav-logo-text {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.35;
}

.nav-group-title {
  color: rgba(255,255,255,.45);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 16px 14px 6px;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  color: rgba(255,255,255,.72);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .01em;
  transition: var(--transition);
}

.nav-link:hover {
  background: rgba(255,255,255,.08);
  color: #fff;
  transform: translateX(3px);
}

.nav-link.active {
  background: var(--accent);
  color: #071f4a;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(212,168,67,.4);
}

.nav-link.active .nav-icon { color: #071f4a; }

.nav-icon { width: 20px; text-align: center; font-size: 15px; }

.nav-sidebar-bottom {
  margin-top: auto;
  padding: 16px 14px 4px;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: 12px;
  color: rgba(255,255,255,.45);
  line-height: 1.6;
}

.sidebar-tip { display: flex; gap: 8px; align-items: flex-start; }
.sidebar-tip i { color: var(--accent); margin-top: 2px; }

/* ============ 主内容区域 ============ */
.main-area {
  flex: 1;
  margin-left: 260px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.page-content { flex: 1; }

/* ============ Hero ============ */
.help-hero {
  position: relative;
  padding: 90px 0 80px;
  background: linear-gradient(135deg, rgba(7,31,74,.88) 0%, rgba(11,61,145,.82) 50%, rgba(13,77,158,.72) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
}

.help-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,31,74,.2) 0%, rgba(7,31,74,.4) 100%);
  pointer-events: none;
}

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

.help-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212,168,67,.2);
  border: 1px solid rgba(212,168,67,.4);
  color: var(--accent-light);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 40px;
  margin-bottom: 22px;
  letter-spacing: .05em;
}

.help-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
  letter-spacing: .01em;
}

.help-hero h1 span { color: var(--accent); }

.help-hero p {
  font-size: 17px;
  color: rgba(255,255,255,.85);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.7;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  border: 2px solid transparent;
  line-height: 1.2;
}

.btn-primary {
  background: var(--accent);
  color: #071f4a;
  box-shadow: 0 4px 16px rgba(212,168,67,.35);
}
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(212,168,67,.5); color: #071f4a; }

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.5);
}
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,.1); transform: translateY(-2px); color: #fff; }

/* ============ 帮助分类卡片 ============ */
.section-block { padding: 74px 0; }

.section-block.bg-white { background: var(--bg-white); }
.section-block.bg-light { background: var(--bg-light); }
.section-block.bg-dark { background: var(--bg-dark); color: #fff; }

.section-header {
  text-align: center;
  margin-bottom: 46px;
}

.section-tag {
  display: inline-block;
  background: rgba(11,61,145,.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 30px;
  letter-spacing: .05em;
  margin-bottom: 14px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text-main);
}

.section-header p {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 620px;
  margin: 0 auto;
}

.section-header.light h2 { color: #fff; }
.section-header.light p { color: rgba(255,255,255,.7); }

/* 卡片网格 */
.category-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.help-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.help-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(11,61,145,.2);
}

.help-card-image {
  position: relative;
  height: 170px;
  overflow: hidden;
}

.help-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.help-card:hover .help-card-image img { transform: scale(1.06); }

.help-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(7,31,74,.35) 100%);
}

.help-card-icon {
  position: absolute;
  bottom: 12px;
  left: 18px;
  z-index: 2;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #071f4a;
  font-size: 17px;
  box-shadow: 0 4px 12px rgba(212,168,67,.4);
}

.help-card-body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.help-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.help-card-body p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

.card-link i { transition: transform .3s ease; }
.card-link:hover i { transform: translateX(4px); }

/* ============ 热门帮助主题 ============ */
.article-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.article-item {
  display: flex;
  gap: 18px;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 18px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.article-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(11,61,145,.15);
  transform: translateY(-2px);
}

.article-thumb {
  width: 110px;
  height: 90px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-light);
}

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

.article-info { flex: 1; }

.article-tag {
  display: inline-block;
  background: rgba(11,61,145,.08);
  color: var(--primary);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 6px;
  letter-spacing: .03em;
}

.article-info h3 {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 5px;
  color: var(--text-main);
}

.article-info h3 a { color: var(--text-main); }
.article-info h3 a:hover { color: var(--primary); }

.article-info p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 7px;
  font-size: 12px;
  color: var(--text-light);
}

/* ============ 使用流程 ============ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.step-card {
  text-align: center;
  padding: 32px 22px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.step-card:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(212,168,67,.4);
  transform: translateY(-4px);
}

.step-num {
  font-size: 38px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 14px;
  font-family: Georgia, serif;
  letter-spacing: -.02em;
}

.step-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}

.step-card p {
  font-size: 13px;
  color: rgba(255,255,255,.7);
  line-height: 1.6;
}

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

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover { border-color: rgba(11,61,145,.2); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  background: none;
  width: 100%;
  text-align: left;
  gap: 16px;
}

.faq-question:hover { color: var(--primary); }

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(11,61,145,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--primary);
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--accent); color: #071f4a; }

.faq-answer {
  padding: 0 22px 20px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  display: none;
  border-top: 1px dashed var(--border);
  padding-top: 16px;
}

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

/* ============ CTA 联系区域 ============ */
.contact-cta {
  background: linear-gradient(135deg, #0d1b2a 0%, #0b3d91 100%);
  border-radius: var(--radius-lg);
  padding: 50px 44px;
  position: relative;
  overflow: hidden;
  text-align: center;
  color: #fff;
}

.contact-cta::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -30%;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(212,168,67,.15);
  pointer-events: none;
}

.contact-cta::after {
  content: '';
  position: absolute;
  bottom: -70%;
  left: -20%;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(255,255,255,.05);
  pointer-events: none;
}

.contact-inner { position: relative; z-index: 1; }

.contact-cta h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
}

.contact-cta p {
  color: rgba(255,255,255,.75);
  font-size: 15px;
  max-width: 480px;
  margin: 0 auto 30px;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 720px;
  margin: 0 auto 34px;
}

.contact-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 16px;
  padding: 22px 18px;
  transition: var(--transition);
}

.contact-card:hover {
  background: rgba(255,255,255,.14);
  transform: translateY(-3px);
}

.contact-card i {
  font-size: 24px;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}

.contact-card h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  color: #fff;
}

.contact-card p {
  font-size: 12px;
  color: rgba(255,255,255,.65);
  margin: 0;
  line-height: 1.5;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,.7);
  padding: 52px 0 30px;
  font-size: 14px;
}

.footer-grid { display: flex; gap: 30px; flex-wrap: wrap; }

.footer-brand { max-width: 340px; }
.footer-logo {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .03em;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255,255,255,.55);
  margin-top: 12px;
}

.site-footer h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-links li { margin-bottom: 8px; }
.footer-links a { color: rgba(255,255,255,.6); font-size: 13px; }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }

.footer-tip {
  font-size: 13px;
  color: rgba(255,255,255,.55);
  line-height: 1.7;
  display: flex;
  gap: 8px;
}
.footer-tip i { color: var(--accent); margin-top: 2px; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 20px;
  margin-top: 40px;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,.4);
}

/* ============ 移动端导航按钮 ============ */
.mobile-nav-toggle {
  display: none;
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 300;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  box-shadow: var(--shadow-md);
  align-items: center;
  justify-content: center;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(7,31,74,.55);
  z-index: 150;
  backdrop-filter: blur(2px);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .category-cards { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .article-list { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-sidebar {
    width: 260px;
    transform: translateX(-100%);
    transition: transform .35s ease;
  }
  .nav-sidebar.open { transform: translateX(0); }
  .main-area { margin-left: 0; }
  .mobile-nav-toggle { display: flex; }
  .sidebar-overlay.show { display: block; }
  .help-hero { padding: 80px 0 60px; }
  .help-hero h1 { font-size: 30px; }
  .section-block { padding: 54px 0; }
  .section-header h2 { font-size: 26px; }
  .contact-cards { grid-template-columns: 1fr; }
  .footer-grid { flex-direction: column; gap: 24px; }
  .container { padding: 0 20px; }
}

@media (max-width: 520px) {
  .category-cards { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .article-item { flex-direction: column; }
  .article-thumb { width: 100%; height: 140px; }
  .help-hero h1 { font-size: 26px; }
  .hero-buttons { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .contact-cta { padding: 36px 22px; }
}