/* roulang page: index */
:root {
  --brand: #4A90D9;
  --brand-dark: #1E4E79;
  --brand-light: #EDF4FB;
  --accent: #E8924A;
  --accent-hover: #D97E30;
  --bg: #F7FAFC;
  --card-bg: #FFFFFF;
  --text: #2C3E50;
  --text-muted: #6B7A8C;
  --border: #E2E9F0;
  --success: #38A169;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 6px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 3px rgba(30,78,121,0.08);
  --shadow-card-hover: 0 8px 24px rgba(30,78,121,0.10);
  --shadow-nav: 0 4px 20px rgba(0,0,0,0.08);
  --sidebar-width: 260px;
  --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

.grid-margin-x { margin-left: -12px; margin-right: -12px; }
.grid-margin-x > .cell { padding-left: 12px; padding-right: 12px; }
.grid-x { display: flex; flex-wrap: wrap; }
.cell { flex: 0 0 auto; }

/* 左侧导航 */
.side-nav {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width);
  background: #fff;
  border-right: 1px solid #E7EDF3;
  display: flex;
  flex-direction: column;
  z-index: 1000;
}
.brand-area {
  height: 72px;
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
}
.brand-link { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-dark);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin-top: 2px;
}
.nav-list {
  flex: 1;
  padding-top: 16px;
  display: flex;
  flex-direction: column;
}
.nav-item {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 16px;
  font-size: 15px;
  color: var(--text);
  border-left: 3px solid transparent;
  transition: background 0.2s ease, color 0.2s ease;
}
.nav-item i {
  width: 20px;
  font-size: 16px;
  margin-right: 12px;
  text-align: center;
  color: var(--text-muted);
  transition: color 0.2s ease;
}
.nav-item:hover {
  background: #F2F7FC;
  color: var(--brand-dark);
}
.nav-item:hover i { color: var(--brand); }
.nav-item.active {
  background: var(--brand-light);
  border-left-color: var(--brand);
  color: var(--brand-dark);
  font-weight: 600;
}
.nav-item.active i { color: var(--brand); }
.nav-footer {
  border-top: 1px solid var(--border);
  padding: 16px 16px 20px;
  font-size: 12px;
  color: var(--text-muted);
}
.nav-footer-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}
.nav-footer-item i { font-size: 13px; }
.nav-footer-copy { margin-top: 8px; font-size: 11px; opacity: 0.8; }

/* 移动端头部 */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 1100;
  height: 60px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  align-items: center;
  justify-content: space-between;
}
.mobile-brand {
  font-size: 16px;
  font-weight: 700;
  color: var(--brand-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 70%;
}
.hamburger {
  width: 40px;
  height: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  transition: background 0.2s ease;
}
.hamburger:hover { background: var(--brand-light); }
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--brand-dark);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 60px;
  left: 0; right: 0;
  bottom: 0;
  background: #fff;
  z-index: 1050;
  padding: 32px 24px;
  flex-direction: column;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 32px;
  text-align: center;
}
.drawer-link {
  display: block;
  font-size: 18px;
  color: var(--text);
  padding: 16px 8px;
  border-bottom: 1px solid var(--border);
  text-align: center;
  transition: color 0.2s ease, background 0.2s ease;
}
.drawer-link:hover { color: var(--brand); background: var(--brand-light); }
.drawer-link.active { color: var(--brand); font-weight: 600; }
.drawer-footer {
  margin-top: auto;
  padding-top: 32px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* 主内容 */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.main-content {
  flex: 1;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 56px;
}

/* 倒计时条 */
.countdown-bar {
  position: sticky;
  top: 0;
  height: 48px;
  background: var(--brand-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 900;
  font-size: 14px;
}
.countdown-text {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.countdown-text i { color: var(--accent); }
.countdown-timer {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  font-weight: 500;
  flex-shrink: 0;
}
.countdown-close {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  transition: background 0.2s ease, opacity 0.2s ease;
  flex-shrink: 0;
}
.countdown-close:hover { background: rgba(255,255,255,0.15); opacity: 0.7; }

/* Hero */
.hero {
  min-height: 600px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 80px 56px;
  margin: 0 -56px;
  background: linear-gradient(90deg, rgba(255,255,255,0.92) 20%, rgba(237,244,251,0.65) 80%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  position: relative;
}
.hero h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 700;
  color: var(--brand-dark);
  line-height: 1.25;
  letter-spacing: 0.02em;
  max-width: 760px;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 20px;
  max-width: 600px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-trust {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  font-size: 14px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.hero-trust span { display: flex; align-items: center; gap: 6px; }
.hero-trust i { color: var(--success); font-size: 15px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn i { margin-right: 8px; }
.btn-primary {
  background: var(--brand);
  color: #fff;
}
.btn-primary:hover {
  background: var(--brand-dark);
  box-shadow: 0 4px 14px rgba(30,78,121,0.25);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  border: 1px solid var(--brand);
  color: var(--brand);
  background: transparent;
}
.btn-secondary:hover {
  background: var(--brand-light);
  color: var(--brand-dark);
}
.btn-secondary:active { transform: translateY(0); }
.btn-accent {
  background: var(--accent);
  color: #fff;
  height: 48px;
  padding: 0 32px;
  font-size: 16px;
}
.btn-accent:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 16px rgba(232,146,74,0.35);
  transform: translateY(-1px);
}
.btn-accent:active { transform: translateY(0); }

/* 通用区块 */
.section {
  padding: 56px 0;
}
.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}
.section-header::before {
  content: '';
  width: 4px;
  height: 28px;
  background: var(--brand);
  border-radius: 2px;
  flex-shrink: 0;
}
.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}
.section-header .section-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-left: auto;
  max-width: 400px;
  text-align: right;
}

/* 卖点卡片 */
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.3s ease, transform 0.2s ease;
  border: 1px solid rgba(226,233,240,0.4);
}
.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--brand-light);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
  transition: background 0.3s ease, color 0.3s ease;
}
.feature-card:hover .feature-icon {
  background: var(--accent);
  color: #fff;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0;
}

/* 图墙 */
.gallery-card {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  padding-top: 75%;
  background: var(--brand-light);
  transition: box-shadow 0.3s ease;
}
.gallery-card:hover {
  box-shadow: var(--shadow-card-hover);
}
.gallery-card img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.gallery-card:hover img {
  transform: scale(1.04);
}
.gallery-cover {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
  padding: 24px 16px 12px;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  z-index: 2;
}
.gallery-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255,255,255,0.9);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: var(--radius-badge);
  z-index: 2;
  backdrop-filter: none;
}

/* CTA 区块 */
.cta-section {
  background: var(--brand-light);
  border-radius: var(--radius-card);
  padding: 48px 32px;
  text-align: center;
  margin: 24px 0 56px;
}
.cta-section h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.cta-section p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.cta-trust {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-top: 24px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-muted);
}
.cta-trust span { display: flex; align-items: center; gap: 6px; }
.cta-trust i { color: var(--success); }

/* FAQ */
.faq-list {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child { border-bottom: none; }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: background 0.2s ease, color 0.2s ease;
}
.faq-question:hover {
  background: var(--brand-light);
  color: var(--brand-dark);
}
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand-light);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 24px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  padding-bottom: 16px;
}

/* 资讯列表 */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 16px;
  transition: box-shadow 0.3s ease, transform 0.2s ease;
  border: 1px solid rgba(226,233,240,0.4);
}
.news-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.news-card-link {
  display: flex;
  gap: 16px;
}
.news-cover {
  width: 120px;
  height: 84px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--brand-light);
}
.news-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.news-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 6px;
  transition: color 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-card:hover .news-body h3 {
  color: var(--brand);
}
.news-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  font-size: 13px;
  color: var(--text-muted);
}
.badge {
  display: inline-flex;
  align-items: center;
  background: var(--brand-light);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 500;
  padding: 2px 12px;
  border-radius: var(--radius-badge);
}
.news-arrow {
  margin-left: auto;
  color: var(--brand);
  font-size: 16px;
  transition: transform 0.2s ease;
}
.news-card:hover .news-arrow {
  transform: translateX(4px);
}
.news-empty {
  background: #F2F7FC;
  border-radius: var(--radius-card);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
  border: 1px dashed var(--border);
}

/* 页脚 */
.footer {
  background: var(--brand-dark);
  color: rgba(255,255,255,0.9);
  padding: 48px 0 0;
  margin-top: 32px;
}
.footer .container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 56px;
}
.footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
}
.footer h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}
.footer ul li {
  margin-bottom: 8px;
}
.footer ul li a,
.footer ul li {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  transition: color 0.2s ease;
}
.footer ul li a:hover {
  color: var(--accent);
}
.footer-contact i {
  width: 18px;
  color: var(--accent);
  margin-right: 8px;
}
.footer-bottom {
  margin-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

/* 响应式 */
@media (max-width: 1279px) {
  .main-content { padding: 0 40px; }
  .hero { margin: 0 -40px; padding: 60px 40px; }
  .footer .container { padding: 0 40px; }
}
@media (max-width: 1024px) {
  .side-nav { display: none; }
  .mobile-header { display: flex; }
  .mobile-drawer { display: flex; }
  .main-wrapper { margin-left: 0; }
  .main-content { padding: 0 20px; }
  .hero { margin: 0 -20px; padding: 48px 24px; min-height: 480px; }
  .footer .container { padding: 0 20px; }
}
@media (max-width: 768px) {
  .main-content { padding: 0 20px; }
  .section { padding: 40px 0; }
  .section-header h2 { font-size: 24px; }
  .section-header .section-desc { display: none; }
  .hero { min-height: 400px; padding: 40px 20px; margin: 0 -20px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .hero-actions { flex-direction: column; gap: 12px; }
  .hero-actions .btn { width: 100%; }
  .feature-card { padding: 16px; }
  .cta-section { padding: 32px 20px; }
  .cta-trust { gap: 16px; }
  .news-card-link { flex-direction: column; }
  .news-cover { width: 100%; height: 140px; }
  .footer .grid-x > .cell { margin-bottom: 24px; }
}
@media (max-width: 640px) {
  .countdown-text { display: none; }
  .countdown-bar { justify-content: flex-end; padding: 0 12px; }
  .countdown-timer { font-size: 13px; }
  .hero { min-height: 360px; }
  .gallery-card { padding-top: 75%; }
  .footer-bottom { font-size: 11px; padding: 16px 8px; }
}

/* roulang page: article */
:root {
  --primary: #4A90D9;
  --primary-dark: #1E4E79;
  --primary-light: #EDF4FB;
  --accent: #E8924A;
  --accent-hover: #D97E30;
  --bg: #F7FAFC;
  --card-bg: #FFFFFF;
  --text: #2C3E50;
  --text-muted: #6B7A8C;
  --border: #E2E9F0;
  --success: #38A169;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 6px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 3px rgba(30,78,121,0.08);
  --shadow-hover: 0 8px 24px rgba(30,78,121,0.10);
  --sidebar-width: 260px;
  --content-padding-lg: 56px;
  --content-padding-md: 40px;
  --content-padding-sm: 20px;
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary-dark); }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }

/* 按钮 */
.btn-primary,
.btn-secondary,
.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 32px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 500;
  border: none;
  transition: all 0.2s ease;
  line-height: 1;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: #3B7BC0;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(74,144,217,0.25);
}
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-secondary {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-secondary:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(232,146,74,0.25);
}
.btn-primary:focus,
.btn-secondary:focus,
.btn-accent:focus {
  outline: 2px solid rgba(74,144,217,0.4);
  outline-offset: 2px;
}

/* 左侧竖向导航 */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: #fff;
  border-right: 1px solid #E7EDF3;
  display: flex;
  flex-direction: column;
  z-index: 1000;
}
.sidebar-brand {
  height: 72px;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.4;
  letter-spacing: 0.01em;
}
.brand-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}
.nav-list {
  flex: 1;
  padding: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav-item {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 16px;
  margin: 0 12px;
  font-size: 15px;
  font-weight: 400;
  color: var(--text);
  border-radius: 8px;
  transition: all 0.2s ease;
  position: relative;
}
.nav-item i {
  width: 20px;
  font-size: 16px;
  margin-right: 12px;
  color: var(--text-muted);
  text-align: center;
  transition: color 0.2s ease;
}
.nav-item:hover {
  background: #F2F7FC;
  color: var(--primary-dark);
}
.nav-item:hover i { color: var(--primary); }
.nav-item.active {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 600;
}
.nav-item.active i { color: var(--primary); }
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.sidebar-footer p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 移动端顶部导航 */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  z-index: 1100;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  box-shadow: 0 1px 4px rgba(30,78,121,0.06);
}
.mobile-brand {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
}
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  padding: 8px;
  border-radius: 6px;
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--primary-dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger:hover span { background: var(--primary); }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: #fff;
  z-index: 1050;
  padding: 80px 32px 40px;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer .drawer-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}
.mobile-drawer .drawer-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 32px;
}
.mobile-drawer .nav-item {
  display: flex;
  align-items: center;
  height: 56px;
  font-size: 18px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  margin: 0;
  padding: 0 8px;
}
.mobile-drawer .nav-item i {
  width: 28px;
  font-size: 18px;
  margin-right: 12px;
  color: var(--primary);
}
.mobile-drawer .nav-item.active {
  color: var(--primary-dark);
  font-weight: 700;
  background: transparent;
}
.mobile-drawer .nav-item.active::before { display: none; }
.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(30,78,121,0.35);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}
.drawer-overlay.show { opacity: 1; visibility: visible; }

/* 右侧主内容区 */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.main-content {
  flex: 1;
  padding: 40px var(--content-padding-lg) 64px;
}

/* 文章容器 */
.article-container {
  max-width: 1080px;
  margin: 0 auto;
}

/* 面包屑 */
.breadcrumb {
  max-width: 720px;
  margin: 0 auto 32px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-muted);
  gap: 6px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .separator { color: #C0C9D4; }
.breadcrumb .current {
  color: var(--text);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 280px;
}

/* 文章头部 */
.article-header {
  max-width: 720px;
  margin: 0 auto 32px;
  text-align: left;
}
.article-header h1 {
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--primary-dark);
  letter-spacing: 0.01em;
  margin-bottom: 16px;
}
.article-excerpt {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 20px;
  border-left: 3px solid var(--primary);
  padding-left: 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  font-size: 14px;
  color: var(--text-muted);
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta i { color: var(--primary); font-size: 14px; }
.meta-badge {
  display: inline-block;
  padding: 2px 14px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: var(--radius-badge);
  font-size: 13px;
  font-weight: 500;
}

/* 封面图 */
.article-cover {
  max-width: 720px;
  margin: 0 auto 40px;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.article-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* 正文排版 */
.article-content {
  max-width: 720px;
  margin: 0 auto 48px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}
.article-content p {
  margin-bottom: 24px;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-dark);
  margin: 40px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary-dark);
  margin: 32px 0 12px;
  line-height: 1.5;
}
.article-content h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin: 24px 0 10px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 24px 24px;
}
.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-content blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 8px 8px 0;
  font-size: 15px;
  color: var(--primary-dark);
  line-height: 1.7;
}
.article-content blockquote p { margin-bottom: 0; }
.article-content pre {
  margin: 28px 0;
  padding: 20px 24px;
  background: #1E2A38;
  color: #E8F1F8;
  border-radius: var(--radius-card);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.article-content code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-content img {
  border-radius: var(--radius-card);
  margin: 28px 0;
  box-shadow: var(--shadow-card);
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover { color: var(--primary-dark); }
.article-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}
.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;
}
.article-content table tr:nth-child(even) td {
  background: #FAFCFE;
}

/* 正文空态 */
.content-empty {
  padding: 48px 24px;
  text-align: center;
  background: #F2F7FC;
  border-radius: var(--radius-card);
}
.content-empty p {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.content-empty a {
  color: var(--primary);
  font-weight: 500;
}

/* 相关推荐 */
.related-section {
  margin-top: 24px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.related-section h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 24px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.related-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.related-card:hover .related-img img { transform: scale(1.05); }
.related-img {
  width: 100%;
  height: 140px;
  overflow: hidden;
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.related-body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.related-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 8px;
  transition: color 0.2s ease;
}
.related-card:hover .related-body h3 { color: var(--primary); }
.related-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: auto;
}
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
  font-size: 15px;
  font-weight: 500;
  color: var(--primary);
  transition: all 0.2s ease;
  padding: 8px 0;
}
.back-btn:hover {
  color: var(--primary-dark);
  transform: translateX(-4px);
}
.back-btn i { font-size: 14px; }

/* 文章底部 CTA */
.article-cta {
  margin-top: 56px;
  background: var(--primary-light);
  border-radius: var(--radius-card);
  padding: 48px 32px;
  text-align: center;
}
.article-cta h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.article-cta p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* 空态 */
.empty-state {
  max-width: 720px;
  margin: 80px auto;
  text-align: center;
  padding: 48px 32px;
  background: #fff;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}
.empty-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 24px;
}
.empty-state h1 {
  font-size: 26px;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.empty-state p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* 页脚 */
.footer {
  background: var(--primary-dark);
  color: #fff;
  padding: 48px 0 0;
}
.footer .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-brand {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.75);
  margin-bottom: 0;
}
.footer h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  transition: all 0.2s ease;
}
.footer ul li a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer ul li a i {
  font-size: 12px;
  margin-right: 6px;
  color: var(--accent);
}
.footer-contact li {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact i {
  width: 16px;
  color: var(--accent);
}
.footer-bottom {
  margin-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding: 16px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
}

/* 响应式 */
@media (max-width: 1279px) {
  .main-content {
    padding: 36px 40px 56px;
  }
}
@media (max-width: 1024px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .main-wrapper { margin-left: 0; }
  .main-content {
    padding: 80px 40px 48px;
  }
  .article-cover {
    margin-bottom: 32px;
  }
}
@media (max-width: 768px) {
  .main-content {
    padding: 76px 20px 40px;
  }
  .breadcrumb {
    margin-bottom: 20px;
    font-size: 13px;
  }
  .breadcrumb .current { max-width: 180px; }
  .article-header h1 {
    font-size: 28px;
    line-height: 1.35;
  }
  .article-excerpt {
    font-size: 15px;
  }
  .article-meta {
    gap: 12px;
    font-size: 13px;
  }
  .article-content {
    font-size: 15px;
  }
  .article-content h2 {
    font-size: 21px;
  }
  .article-content h3 {
    font-size: 18px;
  }
  .related-section h2 {
    font-size: 24px;
  }
  .related-body {
    padding: 16px;
  }
  .related-body h3 {
    font-size: 16px;
  }
  .related-body p {
    font-size: 13px;
  }
  .article-cta {
    padding: 36px 20px;
  }
  .article-cta h2 {
    font-size: 22px;
  }
  .footer .container {
    padding: 0 20px;
  }
  .footer-bottom {
    margin-top: 24px;
    padding: 14px 0;
  }
}
@media (max-width: 520px) {
  .article-meta {
    flex-wrap: wrap;
    gap: 10px 14px;
  }
  .article-meta span {
    font-size: 13px;
  }
  .breadcrumb .current { max-width: 120px; }
  .article-header h1 {
    font-size: 24px;
  }
  .article-content blockquote {
    padding: 16px;
  }
  .btn-primary,
  .btn-secondary,
  .btn-accent {
    width: 100%;
    max-width: 320px;
  }
  .footer h4 {
    margin-top: 24px;
  }
}

/* roulang page: category2 */
:root {
            --primary: #4A90D9;
            --primary-dark: #1E4E79;
            --primary-light: #EDF4FB;
            --accent: #E8924A;
            --accent-hover: #D97E30;
            --bg: #F7FAFC;
            --card-bg: #FFFFFF;
            --text: #2C3E50;
            --text-muted: #6B7A8C;
            --border: #E2E9F0;
            --success: #38A169;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 6px;
            --radius-badge: 999px;
            --shadow-card: 0 1px 3px rgba(30, 78, 121, 0.08);
            --shadow-hover: 0 8px 24px rgba(30, 78, 121, 0.10);
            --shadow-drawer: 0 4px 20px rgba(0, 0, 0, 0.08);
            --sidebar-width: 260px;
            --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
        }

        ul {
            list-style: none;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 56px;
            padding-right: 56px;
        }

        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--card-bg);
            border-right: 1px solid #E7EDF3;
            display: flex;
            flex-direction: column;
            z-index: 100;
        }

        .sidebar-brand {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            border-bottom: 1px solid var(--border);
            padding: 0 16px;
        }

        .sidebar-brand .brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.4;
            letter-spacing: 0.02em;
            text-align: center;
        }

        .sidebar-brand .brand-sub {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
            letter-spacing: 0.05em;
        }

        .nav-list {
            flex: 1;
            padding: 24px 0;
            overflow-y: auto;
        }

        .nav-item {
            display: flex;
            align-items: center;
            height: 44px;
            padding-left: 16px;
            font-size: 15px;
            color: var(--text);
            margin-bottom: 4px;
            position: relative;
            transition: background 0.2s ease;
        }

        .nav-item i {
            width: 20px;
            margin-right: 12px;
            color: var(--text-muted);
            font-size: 16px;
            text-align: center;
            transition: color 0.2s ease;
        }

        .nav-item:hover {
            background: #F2F7FC;
            color: var(--primary-dark);
        }

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

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

        .nav-item.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 3px;
            background: var(--primary);
            border-radius: 0 3px 3px 0;
        }

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

        .sidebar-bottom {
            padding: 16px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: var(--text-muted);
        }

        .sidebar-bottom p {
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .mobile-header {
            display: none;
            height: 60px;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            position: sticky;
            top: 0;
            z-index: 99;
        }

        .mobile-brand {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-dark);
        }

        .hamburger {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-btn);
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s ease;
        }

        .hamburger:hover {
            background: var(--primary);
            color: #fff;
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            inset: 0;
            background: var(--card-bg);
            z-index: 200;
            flex-direction: column;
            padding: 20px;
            overflow-y: auto;
        }

        .mobile-drawer.open {
            display: flex;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
            font-size: 18px;
            font-weight: 700;
            color: var(--primary-dark);
        }

        .drawer-close {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-btn);
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .drawer-nav {
            padding: 40px 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .drawer-item {
            font-size: 20px;
            height: 52px;
            display: flex;
            align-items: center;
            padding: 0 16px;
            border-radius: var(--radius-card);
            color: var(--text);
            transition: background 0.2s ease;
        }

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

        .main-content {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .breadcrumb {
            padding: 24px 0 0;
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .breadcrumb span {
            color: var(--text-muted);
        }

        .category-hero {
            background: linear-gradient(rgba(255, 255, 255, 0.88), rgba(237, 244, 251, 0.65)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-radius: var(--radius-card);
            padding: 64px 48px;
            margin-top: 24px;
            min-height: 360px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: flex-start;
            box-shadow: var(--shadow-card);
        }

        .category-hero h1 {
            font-size: clamp(32px, 4.5vw, 48px);
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.25;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }

        .category-desc {
            font-size: 18px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 28px;
            max-width: 620px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 32px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            line-height: 44px;
            white-space: nowrap;
        }

        .btn i {
            margin-right: 8px;
        }

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

        .btn-primary:hover {
            background: #3B7BC0;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(74, 144, 217, 0.25);
        }

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

        .btn-outline {
            border: 1px solid var(--primary);
            color: var(--primary);
            background: transparent;
        }

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

        .btn-accent {
            background: var(--accent);
            color: #fff;
            height: 48px;
            line-height: 48px;
            padding: 0 36px;
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(232, 146, 74, 0.3);
        }

        .section {
            margin-top: 56px;
        }

        .section h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.4;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            margin-bottom: 32px;
        }

        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 24px;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }

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

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: background 0.3s ease, color 0.3s ease;
        }

        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: #fff;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .banner-section {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .banner-section img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-card);
        }

        .scene-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scene-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--primary);
            transition: box-shadow 0.3s ease;
        }

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

        .scene-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .scene-item h3 i {
            color: var(--primary);
            font-size: 16px;
        }

        .scene-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }

        .step-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 24px 16px;
            text-align: center;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
        }

        .step-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
            margin: 0;
        }

        .step-arrow {
            position: absolute;
            right: -14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--accent);
            font-size: 14px;
            z-index: 2;
            background: var(--bg);
            border-radius: 50%;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .tag-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .tag-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-badge);
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .tag-link i {
            margin-right: 6px;
            font-size: 12px;
        }

        .tag-link:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(74, 144, 217, 0.3);
            transform: translateY(-2px);
        }

        .faq-list {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: background 0.2s ease;
        }

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

        .faq-icon {
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 16px;
        }

        .cta-section {
            background: var(--primary-light);
            border-radius: var(--radius-card);
            padding: 48px 32px;
            text-align: center;
            box-shadow: var(--shadow-card);
            margin-bottom: 56px;
        }

        .cta-section h2 {
            border-left: none;
            padding-left: 0;
            font-size: 24px;
            margin-bottom: 12px;
        }

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

        .trust-points {
            display: flex;
            justify-content: center;
            gap: 24px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .trust-points span {
            display: inline-flex;
            align-items: center;
            font-size: 14px;
            color: var(--primary-dark);
        }

        .trust-points i {
            color: var(--success);
            margin-right: 6px;
        }

        .footer {
            background: var(--primary-dark);
            color: #fff;
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin: 0;
        }

        .footer h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 12px;
            color: #fff;
        }

        .footer ul {
            padding: 0;
            margin: 0;
        }

        .footer ul li {
            margin-bottom: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }

        .footer ul li a {
            color: rgba(255, 255, 255, 0.75);
            transition: color 0.2s ease;
        }

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

        .footer ul li i {
            margin-right: 6px;
            color: var(--accent);
            font-size: 12px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            margin-top: 32px;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

        @media (max-width: 1279px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        @media (max-width: 1024px) {
            .sidebar {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

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

            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .category-hero {
                padding: 48px 28px;
                min-height: 320px;
            }

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

            .step-arrow {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .section {
                margin-top: 40px;
            }

            .section h2 {
                font-size: 24px;
                margin-bottom: 24px;
            }

            .scene-list {
                grid-template-columns: 1fr;
            }

            .steps {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .category-hero {
                padding: 36px 20px;
                min-height: 280px;
            }

            .category-hero h1 {
                font-size: 32px;
            }

            .category-desc {
                font-size: 16px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

            .cta-section {
                padding: 32px 20px;
            }

            .trust-points {
                flex-direction: column;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .breadcrumb {
                font-size: 13px;
            }

            .feature-card {
                padding: 16px;
            }

            .scene-item {
                padding: 20px 16px;
            }

            .faq-question {
                padding: 16px;
                font-size: 15px;
            }

            .faq-answer {
                padding-left: 16px;
                padding-right: 16px;
            }

            .faq-item.open .faq-answer {
                padding-left: 16px;
                padding-right: 16px;
            }

            .btn {
                width: 100%;
                padding: 0 24px;
            }

            .footer {
                padding: 40px 0 16px;
            }

            .footer-bottom p {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
      --color-primary: #4A90D9;
      --color-primary-dark: #1E4E79;
      --color-primary-light: #EDF4FB;
      --color-accent: #E8924A;
      --color-accent-dark: #D97E30;
      --color-page-bg: #F7FAFC;
      --color-card-bg: #FFFFFF;
      --color-text: #2C3E50;
      --color-text-secondary: #6B7A8C;
      --color-border: #E2E9F0;
      --color-success: #38A169;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 6px;
      --radius-badge: 999px;
      --shadow-card: 0 1px 3px rgba(30, 78, 121, 0.08);
      --shadow-card-hover: 0 8px 24px rgba(30, 78, 121, 0.10);
      --shadow-drawer: 0 4px 20px rgba(0, 0, 0, 0.08);
      --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-family);
      font-size: 16px;
      line-height: 1.75;
      font-weight: 400;
      color: var(--color-text);
      background: var(--color-page-bg);
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    button {
      font-family: var(--font-family);
    }

    .container {
      max-width: 1320px;
      margin: 0 auto;
      padding: 0 56px;
    }

    .grid-margin-x {
      margin-left: -12px;
      margin-right: -12px;
    }

    .grid-margin-x > .cell {
      padding-left: 12px;
      padding-right: 12px;
    }

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

    .section-header {
      max-width: 680px;
      margin-bottom: 36px;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 14px;
      font-weight: 600;
      color: var(--color-primary);
      letter-spacing: 0.08em;
      margin-bottom: 8px;
    }

    .section-header h2 {
      font-size: 28px;
      font-weight: 700;
      line-height: 1.3;
      color: var(--color-primary-dark);
      margin: 0 0 12px;
      position: relative;
      padding-left: 14px;
    }

    .section-header h2::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 4px;
      height: 22px;
      background: var(--color-primary);
      border-radius: 2px;
    }

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

    /* 侧边栏 */
    .site-sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: 260px;
      height: 100vh;
      background: #fff;
      border-right: 1px solid #E7EDF3;
      display: flex;
      flex-direction: column;
      z-index: 300;
    }

    .sidebar-brand {
      height: 92px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 0 20px;
      border-bottom: 1px solid #E7EDF3;
    }

    .brand-link {
      text-decoration: none;
    }

    .brand-name {
      font-size: 18px;
      font-weight: 700;
      color: var(--color-primary-dark);
      letter-spacing: 0.02em;
      line-height: 1.35;
    }

    .brand-sub {
      font-size: 12px;
      color: var(--color-text-secondary);
      margin-top: 2px;
    }

    .sidebar-nav {
      flex: 1;
      padding: 20px 12px;
      overflow-y: auto;
    }

    .nav-list {
      display: flex;
      flex-direction: column;
      gap: 4px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .nav-item {
      display: flex;
      align-items: center;
      gap: 12px;
      height: 44px;
      padding: 0 16px;
      border-radius: 8px;
      color: var(--color-text);
      font-size: 15px;
      font-weight: 500;
      text-decoration: none;
      transition: background 0.2s ease, color 0.2s ease;
      position: relative;
    }

    .nav-item i {
      width: 20px;
      text-align: center;
      font-size: 16px;
      color: var(--color-text-secondary);
      transition: color 0.2s ease;
    }

    .nav-item:hover {
      background: #F2F7FC;
      color: var(--color-primary-dark);
    }

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

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

    .nav-item.active::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 3px;
      height: 20px;
      background: var(--color-primary);
      border-radius: 0 3px 3px 0;
    }

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

    .sidebar-footer {
      padding: 16px 20px;
      border-top: 1px solid #E7EDF3;
    }

    .sidebar-info {
      font-size: 13px;
      color: var(--color-text-secondary);
      line-height: 1.6;
      margin: 0;
    }

    .sidebar-info i {
      margin-right: 6px;
      color: var(--color-primary);
      width: 14px;
    }

    .sidebar-copy {
      font-size: 12px;
      color: var(--color-text-secondary);
      margin-top: 12px;
      padding-top: 10px;
      border-top: 1px solid #E7EDF3;
    }

    /* 移动端顶部栏 */
    .mobile-topbar {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 60px;
      background: #fff;
      border-bottom: 1px solid #E7EDF3;
      padding: 0 20px;
      align-items: center;
      justify-content: space-between;
      z-index: 400;
      box-shadow: 0 2px 8px rgba(30, 78, 121, 0.06);
    }

    .mobile-brand {
      font-size: 16px;
      font-weight: 700;
      color: var(--color-primary-dark);
      text-decoration: none;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 72%;
    }

    .hamburger {
      width: 40px;
      height: 40px;
      border: none;
      background: transparent;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 5px;
      cursor: pointer;
      border-radius: 8px;
      transition: background 0.2s ease;
    }

    .hamburger:hover {
      background: #F2F7FC;
    }

    .hamburger span {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--color-text);
      border-radius: 2px;
      transition: transform 0.2s ease, opacity 0.2s ease;
    }

    .hamburger.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .hamburger.active span:nth-child(2) {
      opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    /* 移动端抽屉 */
    .mobile-drawer {
      display: none;
      position: fixed;
      top: 60px;
      left: 0;
      right: 0;
      background: #fff;
      box-shadow: var(--shadow-drawer);
      padding: 16px 20px 24px;
      z-index: 390;
      transform: translateY(-120%);
      opacity: 0;
      transition: transform 0.3s ease, opacity 0.3s ease;
      visibility: hidden;
    }

    .mobile-drawer.open {
      transform: translateY(0);
      opacity: 1;
      visibility: visible;
    }

    .drawer-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 14px 8px;
      color: var(--color-text);
      font-size: 16px;
      font-weight: 500;
      text-decoration: none;
      border-bottom: 1px solid #E7EDF3;
    }

    .drawer-item:last-child {
      border-bottom: none;
    }

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

    .drawer-item i {
      width: 20px;
      text-align: center;
      color: var(--color-text-secondary);
    }

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

    .drawer-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.35);
      z-index: 380;
      opacity: 0;
      transition: opacity 0.3s ease;
      pointer-events: none;
    }

    .drawer-overlay.show {
      opacity: 1;
      pointer-events: auto;
    }

    /* 主内容 */
    .site-main {
      margin-left: 260px;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      background: var(--color-page-bg);
    }

    .main-content {
      flex: 1;
    }

    /* 按钮 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 44px;
      padding: 0 28px;
      border-radius: var(--radius-btn);
      font-size: 16px;
      font-weight: 500;
      text-decoration: none;
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.2s ease;
      line-height: 1;
    }

    .btn i {
      font-size: 16px;
    }

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

    .btn-primary:hover {
      background: #3B7BC0;
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(74, 144, 217, 0.25);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: none;
    }

    .btn-outline {
      background: transparent;
      color: var(--color-primary);
      border: 1px solid var(--color-primary);
    }

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

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

    .btn-accent:hover {
      background: var(--color-accent-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(232, 146, 74, 0.3);
    }

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

    .btn-lg {
      height: 48px;
      padding: 0 36px;
      font-size: 16px;
    }

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

    /* 分类 Hero */
    .category-hero {
      position: relative;
      min-height: 460px;
      display: flex;
      align-items: center;
      overflow: hidden;
      background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    }

    .category-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(255, 255, 255, 0.94) 0%, rgba(255, 255, 255, 0.78) 45%, rgba(237, 244, 251, 0.5) 100%);
    }

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

    .hero-content {
      max-width: 720px;
      padding: 48px 0;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-bottom: 20px;
    }

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

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

    .breadcrumb .bc-current {
      color: var(--color-primary-dark);
      font-weight: 500;
    }

    .hero-label {
      display: inline-block;
      padding: 6px 14px;
      background: var(--color-primary-light);
      color: var(--color-primary-dark);
      font-size: 13px;
      font-weight: 600;
      border-radius: var(--radius-badge);
      margin-bottom: 20px;
    }

    .category-hero h1 {
      font-size: clamp(32px, 4.5vw, 48px);
      font-weight: 700;
      color: var(--color-primary-dark);
      line-height: 1.25;
      letter-spacing: 0.02em;
      margin: 0 0 16px;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--color-text);
      line-height: 1.7;
      margin: 0 0 32px;
      max-width: 600px;
    }

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

    /* 价值卡片 */
    .value-card {
      background: #fff;
      border-radius: var(--radius-card);
      padding: 24px;
      box-shadow: var(--shadow-card);
      height: 100%;
      display: flex;
      flex-direction: column;
      border: 1px solid var(--color-border);
      transition: box-shadow 0.3s ease, transform 0.3s ease;
    }

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

    .value-icon {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: var(--color-primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      transition: background 0.3s ease;
    }

    .value-icon i {
      font-size: 22px;
      color: var(--color-primary);
      transition: color 0.3s ease;
    }

    .value-card:hover .value-icon {
      background: var(--color-accent);
    }

    .value-card:hover .value-icon i {
      color: #fff;
    }

    .value-card h3 {
      font-size: 20px;
      font-weight: 600;
      color: var(--color-text);
      margin-bottom: 10px;
      line-height: 1.4;
    }

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

    /* 场景区块 */
    .scene-section {
      background: #fff;
    }

    .scene-card {
      background: #fff;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      height: 100%;
      display: flex;
      flex-direction: column;
      border: 1px solid var(--color-border);
      transition: box-shadow 0.3s ease, transform 0.3s ease;
    }

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

    .scene-media {
      position: relative;
      aspect-ratio: 4 / 3;
      overflow: hidden;
    }

    .scene-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

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

    .scene-tag {
      position: absolute;
      left: 14px;
      bottom: 14px;
      padding: 4px 12px;
      background: rgba(30, 78, 121, 0.85);
      color: #fff;
      font-size: 12px;
      font-weight: 500;
      border-radius: var(--radius-badge);
      letter-spacing: 0.02em;
    }

    .scene-card h3 {
      padding: 20px 20px 8px;
      margin: 0;
      font-size: 20px;
      font-weight: 600;
      color: var(--color-text);
      line-height: 1.4;
    }

    .scene-card p {
      padding: 0 20px 22px;
      margin: 0;
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.7;
      flex: 1;
    }

    /* 流程区块 */
    .process-section {
      background: var(--color-page-bg);
    }

    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-bottom: 28px;
    }

    .process-step {
      position: relative;
      padding: 28px 24px;
      background: #fff;
      border-radius: var(--radius-card);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-card);
      transition: box-shadow 0.3s ease, transform 0.3s ease;
    }

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

    .step-num {
      display: inline-block;
      font-size: 28px;
      font-weight: 700;
      color: var(--color-primary);
      font-variant-numeric: tabular-nums;
      line-height: 1;
      margin-bottom: 16px;
    }

    .process-step h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--color-primary-dark);
      margin: 0 0 10px;
      line-height: 1.4;
    }

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

    .process-tags {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      padding: 20px 24px;
      background: var(--color-primary-light);
      border-radius: var(--radius-card);
    }

    .process-tags-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--color-primary-dark);
      margin-right: 4px;
    }

    .process-tag {
      display: inline-block;
      padding: 6px 16px;
      background: #fff;
      border: 1px solid #cfddea;
      color: var(--color-primary);
      font-size: 14px;
      border-radius: var(--radius-badge);
      text-decoration: none;
      transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    }

    .process-tag:hover {
      background: var(--color-primary);
      border-color: var(--color-primary);
      color: #fff;
    }

    /* 横幅图 */
    .banner-card {
      position: relative;
      border-radius: 16px;
      overflow: hidden;
      height: 320px;
      box-shadow: 0 8px 24px rgba(30, 78, 121, 0.12);
    }

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

    .banner-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(30, 78, 121, 0.80) 0%, rgba(30, 78, 121, 0.30) 65%, rgba(30, 78, 121, 0.08) 100%);
    }

    .banner-text {
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      padding: 0 48px;
      max-width: 580px;
      color: #fff;
    }

    .banner-text h2 {
      font-size: 28px;
      font-weight: 700;
      line-height: 1.3;
      margin: 0 0 12px;
      color: #fff;
    }

    .banner-text p {
      font-size: 15px;
      line-height: 1.7;
      margin: 0 0 24px;
      color: rgba(255, 255, 255, 0.92);
    }

    /* FAQ */
    .faq-section {
      background: #fff;
    }

    .faq-list {
      background: #fff;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      border: 1px solid var(--color-border);
      overflow: hidden;
    }

    .faq-item {
      border-bottom: 1px solid var(--color-border);
    }

    .faq-item:last-child {
      border-bottom: none;
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 24px;
      background: transparent;
      border: none;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text);
      cursor: pointer;
      text-align: left;
      transition: background 0.2s ease;
      font-family: var(--font-family);
    }

    .faq-question:hover {
      background: #F7FAFC;
    }

    .faq-question i {
      font-size: 20px;
      color: var(--color-primary);
      transition: transform 0.3s ease;
      flex-shrink: 0;
    }

    .faq-item.active .faq-question i {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
    }

    .faq-answer p {
      padding: 0 64px 22px 24px;
      margin: 0;
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.7;
    }

    /* CTA */
    .cta-section {
      padding: 72px 0;
    }

    .cta-inner {
      background: var(--color-primary-light);
      border-radius: 16px;
      padding: 56px 48px;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
      box-shadow: var(--shadow-card);
    }

    .cta-inner h2 {
      font-size: 28px;
      font-weight: 700;
      color: var(--color-primary-dark);
      margin: 0 0 12px;
    }

    .cta-inner > p {
      font-size: 15px;
      color: var(--color-text-secondary);
      margin: 0 0 28px;
    }

    .cta-action {
      margin-bottom: 28px;
    }

    .cta-trust {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 24px;
    }

    .cta-trust span {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--color-text);
    }

    .cta-trust i {
      color: var(--color-accent);
      font-size: 16px;
    }

    /* 页脚 */
    .footer {
      background: var(--color-primary-dark);
      color: rgba(255, 255, 255, 0.9);
      padding: 48px 0 0;
      margin-top: auto;
    }

    .footer-brand {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-desc {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.72);
      line-height: 1.7;
      margin: 0;
    }

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

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

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

    .footer ul li a {
      color: rgba(255, 255, 255, 0.76);
      font-size: 14px;
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

    .footer ul li a i {
      margin-right: 6px;
      font-size: 12px;
      color: var(--color-accent);
    }

    .footer ul li i {
      margin-right: 8px;
      color: var(--color-accent);
      width: 16px;
    }

    .footer-contact li {
      color: rgba(255, 255, 255, 0.76);
      font-size: 14px;
    }

    .footer-bottom {
      margin-top: 40px;
      padding: 20px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
    }

    .footer-bottom p {
      margin: 0;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.72);
      text-align: center;
    }

    /* 响应式 */
    @media (max-width: 1279px) {
      .container {
        padding: 0 40px;
      }
    }

    @media (max-width: 1024px) {
      .container {
        padding: 0 20px;
      }

      .site-sidebar {
        display: none;
      }

      .mobile-topbar {
        display: flex;
      }

      .mobile-drawer {
        display: block;
      }

      .drawer-overlay {
        display: block;
      }

      .site-main {
        margin-left: 0;
        padding-top: 60px;
      }

      .section-block {
        padding: 40px 0;
      }

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

      .category-hero h1 {
        font-size: 38px;
      }
    }

    @media (max-width: 768px) {
      .section-block {
        padding: 32px 0;
      }

      .category-hero {
        min-height: 400px;
      }

      .category-hero h1 {
        font-size: 34px;
      }

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

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

      .banner-card {
        height: 260px;
      }

      .banner-text {
        padding: 0 24px;
      }

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

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

      .value-card {
        padding: 20px;
      }

      .faq-question {
        padding: 18px 20px;
      }

      .faq-answer p {
        padding: 0 52px 20px 20px;
      }
    }

    @media (max-width: 640px) {
      .category-hero {
        min-height: 360px;
      }

      .category-hero h1 {
        font-size: 32px;
      }

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

      .hero-actions {
        flex-direction: column;
        width: 100%;
      }

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

      .process-tags {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }

      .banner-card {
        height: 240px;
      }

      .banner-text h2 {
        font-size: 20px;
      }

      .cta-inner {
        padding: 36px 20px;
      }

      .cta-trust {
        flex-direction: column;
        gap: 12px;
      }

      .section-header h2 {
        font-size: 24px;
      }
    }

/* roulang page: category3 */
:root {
  --primary: #4A90D9;
  --primary-dark: #1E4E79;
  --primary-light: #EDF4FB;
  --accent: #E8924A;
  --accent-hover: #D97E30;
  --bg: #F7FAFC;
  --card-bg: #FFFFFF;
  --text: #2C3E50;
  --text-secondary: #6B7A8C;
  --border: #E2E9F0;
  --success: #38A169;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --shadow: 0 1px 3px rgba(30,78,121,0.08);
  --shadow-hover: 0 8px 24px rgba(30,78,121,0.10);
  --shadow-drawer: 0 4px 20px rgba(0,0,0,0.08);
  --sidebar-width: 260px;
  --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
button { font-family: inherit; border: none; cursor: pointer; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.fa, .fas, .far { font-family: "Font Awesome 6 Free"; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  gap: 8px;
  white-space: nowrap;
  line-height: 1;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #3B7BC0; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(74,144,217,0.3); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary-light); }
.btn-outline:active { background: #dce8f4; }
.btn-accent { background: var(--accent); color: #fff; height: 48px; padding: 0 40px; }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(232,146,74,0.3); }
.btn-accent:active { transform: translateY(0); }
.btn:focus-visible { outline: 3px solid rgba(74,144,217,0.4); outline-offset: 2px; }

/* Sidebar Left Nav */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--card-bg);
  border-right: 1px solid #E7EDF3;
  display: flex;
  flex-direction: column;
  z-index: 1000;
}
.sidebar-brand {
  height: 72px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
}
.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.35;
  letter-spacing: 0.01em;
}
.brand-sub {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  margin-top: 2px;
}
.nav-list {
  flex: 1;
  padding: 16px 0;
  overflow-y: auto;
}
.nav-item {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 16px;
  font-size: 15px;
  color: var(--text);
  border-left: 3px solid transparent;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  position: relative;
}
.nav-item i {
  width: 20px;
  margin-right: 12px;
  font-size: 16px;
  text-align: center;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav-item:hover { background: #F2F7FC; color: var(--primary-dark); }
.nav-item:hover i { color: var(--primary); }
.nav-item.active {
  background: var(--primary-light);
  border-left-color: var(--primary);
  color: var(--primary-dark);
  font-weight: 600;
}
.nav-item.active i { color: var(--primary); }
.sidebar-bottom {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}
.sidebar-contact p {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-contact i { width: 14px; text-align: center; }
.sidebar-copy {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Mobile Header */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 60px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: 0 20px;
  align-items: center;
  justify-content: space-between;
}
.mobile-brand {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.3;
}
.hamburger {
  width: 40px; height: 40px;
  background: transparent;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary-dark);
  transition: background 0.2s;
}
.hamburger:hover { background: var(--primary-light); }

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(30,78,121,0.5);
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.mobile-menu-overlay.open { opacity: 1; visibility: visible; }
.mobile-menu-panel {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 85%;
  max-width: 340px;
  background: #fff;
  padding: 80px 32px 32px;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  box-shadow: var(--shadow-drawer);
}
.mobile-menu-overlay.open .mobile-menu-panel { transform: translateX(0); }
.mobile-menu-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 40px; height: 40px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary-dark);
}
.mobile-nav-list { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav-item {
  display: block;
  padding: 14px 16px;
  font-size: 18px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
  transition: background 0.2s, color 0.2s;
}
.mobile-nav-item:hover { background: var(--primary-light); color: var(--primary-dark); }
.mobile-nav-item.active { background: var(--primary-light); color: var(--primary-dark); font-weight: 700; }

/* Main Content */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
}

/* Hero */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  padding: 56px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255,255,255,0.94) 30%, rgba(237,244,251,0.72) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1.25;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 620px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Section */
.section {
  padding: 56px 24px;
}
.section-header {
  margin-bottom: 40px;
  max-width: 720px;
}
.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-dark);
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  margin-bottom: 8px;
  line-height: 1.4;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-top: 8px;
}

/* Model Cards */
.model-section { background: var(--bg); }
.model-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  height: 100%;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  border: 1px solid transparent;
}
.model-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--primary-light);
}
.model-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 16px;
  transition: background 0.3s, color 0.3s;
}
.model-card:hover .model-icon {
  background: var(--accent);
  color: #fff;
}
.model-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.model-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Stats Section */
.stats-section {
  background: var(--primary-dark);
  border-radius: 0;
  margin: 0;
}
.stats-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 32px;
  max-width: 1100px;
  margin: 0 auto;
}
.stats-item {
  text-align: center;
  flex: 1;
  min-width: 180px;
}
.stat-number {
  font-size: 40px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-top: 6px;
}
.stat-divider {
  width: 1px;
  background: rgba(255,255,255,0.2);
  align-self: stretch;
}

/* Process */
.process-section { background: var(--bg); }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process-step {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.3s;
  position: relative;
}
.process-step:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.step-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-variant-numeric: tabular-nums;
}
.process-step:hover .step-circle {
  background: var(--primary);
  color: #fff;
}
.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.process-arrow {
  position: absolute;
  top: 50%;
  right: -18px;
  color: var(--border);
  font-size: 20px;
  transform: translateY(-50%);
  z-index: 2;
}

/* Scenario */
.scenario-section { background: var(--bg); }
.scenario-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.3s;
  height: 100%;
}
.scenario-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.scenario-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.scenario-card:hover img { transform: scale(1.03); }
.scenario-body {
  padding: 20px 24px 24px;
}
.scenario-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.scenario-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.scenario-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
  font-weight: 500;
}

/* FAQ */
.faq-section { background: var(--bg); }
.faq-wrapper {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  max-width: 860px;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child { border-bottom: none; }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: transparent;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: background 0.2s;
}
.faq-question:hover { background: var(--primary-light); }
.faq-question i {
  font-size: 20px;
  color: var(--primary);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.active .faq-question i { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
}
.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* CTA */
.cta-section {
  background: var(--primary-light);
  border-radius: 0;
  padding: 64px 24px;
  text-align: center;
}
.cta-inner {
  max-width: 700px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 12px;
  line-height: 1.3;
}
.cta-inner p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}
.cta-inner .btn { margin-bottom: 28px; }
.cta-trust {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-trust span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-secondary);
}
.cta-trust i { color: var(--success); }

/* Footer */
.footer {
  margin-left: var(--sidebar-width);
  background: var(--primary-dark);
  color: #fff;
  padding: 48px 0 0;
}
.footer .container { max-width: 1200px; }
.footer h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: #fff;
}
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 8px; }
.footer ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  transition: color 0.2s;
}
.footer ul li a:hover { color: #fff; }
.footer ul li a i { margin-right: 4px; font-size: 12px; }
.footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.4;
}
.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  max-width: 300px;
}
.footer-contact li {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.footer-contact i { width: 16px; text-align: center; color: var(--accent); }
.footer-bottom {
  margin-top: 40px;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.15);
  text-align: center;
}
.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 1024px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; }
  .mobile-header { display: flex; }
  .footer { margin-left: 0; }
  .main-content { padding-top: 60px; }
  .hero { min-height: 480px; padding: 40px; }
  .section { padding: 40px 20px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .process-arrow { display: none; }
  .stats-inner { gap: 24px; }
  .stat-number { font-size: 32px; }
}

@media (max-width: 768px) {
  .hero { min-height: 420px; padding: 28px 20px; }
  .hero h1 { font-size: 32px; }
  .hero-subtitle { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .section { padding: 32px 16px; }
  .section-header h2 { font-size: 24px; }
  .process-grid { grid-template-columns: 1fr; }
  .stats-inner { flex-direction: column; align-items: center; text-align: center; }
  .stat-divider { display: none; }
  .scenario-card img { height: 180px; }
  .cta-trust { gap: 16px; flex-direction: column; align-items: center; }
  .footer .grid-x > .cell { margin-bottom: 24px; }
  .footer-bottom { padding: 16px 20px; }
}

@media (max-width: 520px) {
  .mobile-brand { font-size: 14px; }
  .hero { padding: 24px 16px; }
  .model-card { padding: 20px; }
  .faq-question { font-size: 15px; padding: 16px 16px; }
  .faq-answer p { font-size: 13px; }
  .btn { width: 100%; }
  .cta-inner h2 { font-size: 24px; }
}

@media (min-width: 1280px) {
  .section { padding: 56px 56px; }
}