/* roulang page: index */
:root {
  --color-primary: #4A8FE4;
  --color-primary-dark: #2F6FB0;
  --color-primary-deeper: #25619B;
  --color-primary-soft: rgba(74, 143, 228, 0.08);
  --color-primary-mist: rgba(74, 143, 228, 0.05);
  --color-accent: #F0A500;
  --color-accent-deep: #D08E00;
  --color-bg: #F6F8FB;
  --color-card: #FFFFFF;
  --color-text: #1A2634;
  --color-text-secondary: #5E6E82;
  --color-text-muted: #9AA9B9;
  --color-border: #E6EDF5;
  --radius-card: 10px;
  --radius-btn: 6px;
  --radius-input: 8px;
  --shadow-sm: 0 1px 3px rgba(26, 38, 52, 0.08), 0 4px 12px rgba(26, 38, 52, 0.05);
  --shadow-hover: 0 8px 24px rgba(26, 38, 52, 0.10);
  --sidebar-w: 220px;
  --sidebar-w-tablet: 68px;
  --container-max: 1200px;
  --sp: 8px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

/* App Shell */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  position: fixed; left: 0; top: 0; bottom: 0; width: var(--sidebar-w);
  background: var(--color-card); border-right: 1px solid var(--color-border);
  display: flex; flex-direction: column; z-index: 100;
}
.sidebar-logo {
  height: 64px; display: flex; align-items: center; gap: 10px;
  padding: 0 20px; border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.logo-icon {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 16px; flex-shrink: 0;
}
.logo-text { font-weight: 700; font-size: 15px; color: var(--color-text); white-space: nowrap; }
.sidebar-nav { flex: 1; padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 12px; padding: 11px 14px;
  border-radius: 8px; color: var(--color-text-secondary); font-size: 14px; font-weight: 600;
  transition: background .2s, color .2s; position: relative; border-left: 3px solid transparent;
}
.nav-item i { width: 18px; text-align: center; font-size: 15px; }
.nav-item:hover { background: var(--color-primary-mist); color: var(--color-primary); text-decoration: none; }
.nav-item.active {
  background: var(--color-primary-soft); color: var(--color-primary);
  border-left-color: var(--color-primary);
}
.sidebar-bottom { padding: 16px 20px; border-top: 1px solid var(--color-border); }
.sidebar-cta {
  display: block; text-align: center; padding: 10px 16px; border-radius: var(--radius-btn);
  background: var(--color-primary); color: #fff; font-size: 14px; font-weight: 600;
  transition: background .2s; margin-bottom: 10px;
}
.sidebar-cta:hover { background: var(--color-primary-dark); color: #fff; text-decoration: none; }
.sidebar-contact { font-size: 12px; color: var(--color-text-muted); text-align: center; }

.content-wrapper { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; min-height: 100vh; }
.main-content { flex: 1; overflow: hidden; }

/* Mobile header - hidden on desktop */
.mobile-header {
  display: none; position: fixed; top: 0; left: 0; right: 0; height: 56px;
  background: var(--color-card); border-bottom: 1px solid var(--color-border);
  z-index: 1000; align-items: center; padding: 0 16px; gap: 12px;
}
.hamburger {
  width: 36px; height: 36px; border: none; background: none; border-radius: 6px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.hamburger span { display: block; width: 18px; height: 2px; background: var(--color-text); border-radius: 2px; }
.mobile-logo { font-weight: 700; font-size: 16px; color: var(--color-text); flex: 1; }
.mobile-cta {
  background: var(--color-primary); color: #fff; border-radius: var(--radius-btn);
  padding: 6px 14px; font-size: 13px; font-weight: 600; border: none;
}
.mobile-cta:hover { background: var(--color-primary-dark); color: #fff; text-decoration: none; }

.drawer-overlay {
  display: none; position: fixed; inset: 0; background: rgba(26, 38, 52, 0.45);
  z-index: 1100; opacity: 0; transition: opacity .3s;
}
.drawer-overlay.show { display: block; opacity: 1; }
.drawer {
  position: fixed; top: 0; left: 0; bottom: 0; width: 85%; max-width: 300px;
  background: var(--color-card); z-index: 1200; transform: translateX(-100%);
  transition: transform .3s ease; display: flex; flex-direction: column;
  padding: 20px; box-shadow: 4px 0 20px rgba(26, 38, 52, 0.08);
}
.drawer.open { transform: translateX(0); }
.drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.drawer-logo { font-weight: 700; font-size: 16px; }
.drawer-close { background: none; border: none; font-size: 24px; color: var(--color-text-muted); }
.drawer-nav { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.drawer-nav a {
  padding: 12px 14px; border-radius: 8px; font-size: 15px; font-weight: 600;
  color: var(--color-text-secondary); display: flex; align-items: center; gap: 10px;
}
.drawer-nav a i { width: 18px; }
.drawer-nav a.active { background: var(--color-primary-soft); color: var(--color-primary); }
.drawer-nav a:hover { background: var(--color-primary-mist); text-decoration: none; }
.drawer-cta {
  display: block; text-align: center; padding: 12px; border-radius: var(--radius-btn);
  background: var(--color-primary); color: #fff; font-weight: 600; font-size: 15px;
}

/* Hero */
.hero {
  position: relative; background: linear-gradient(135deg, rgba(74,143,228,0.10) 0%, #F6F8FB 60%);
  padding: 72px 24px 56px; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover; background-position: center;
  opacity: 0.06; z-index: 0; pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: var(--container-max); margin: 0 auto; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero-text h1 { font-size: 36px; font-weight: 700; line-height: 1.3; margin-bottom: 16px; color: var(--color-text); }
.hero-text h1 span { color: var(--color-primary); }
.hero-sub { font-size: 16px; color: var(--color-text-secondary); line-height: 1.7; margin-bottom: 28px; max-width: 540px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px;
  background: var(--color-primary); color: #fff; border-radius: var(--radius-btn);
  font-size: 15px; font-weight: 600; border: none; transition: all .2s;
}
.btn-primary i { transition: transform .2s; }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn-primary:hover i { transform: translateX(2px); }
.btn-primary:focus, .btn-secondary:focus { outline: 2px solid rgba(74, 143, 228, 0.4); outline-offset: 2px; }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px;
  background: var(--color-card); color: var(--color-primary); border: 1px solid var(--color-primary);
  border-radius: var(--radius-btn); font-size: 15px; font-weight: 600; transition: all .2s;
}
.btn-secondary:hover { background: var(--color-primary-mist); color: var(--color-primary-dark); text-decoration: none; }
.hero-badges { display: flex; gap: 12px; flex-wrap: wrap; }
.badge {
  display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px;
  background: var(--color-card); border: 1px solid var(--color-border); border-radius: 999px;
  font-size: 13px; color: var(--color-text-secondary); font-weight: 500;
  box-shadow: var(--shadow-sm);
}
.badge i { color: var(--color-primary); font-size: 12px; }
.hero-image {
  border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-hover);
  background: var(--color-card);
}
.hero-image img { width: 100%; height: auto; }

/* Section common */
.section { padding: 72px 24px; }
.section-alt { background: var(--color-card); }
.section-title { font-size: 28px; font-weight: 700; text-align: center; margin-bottom: 8px; color: var(--color-text); }
.section-desc { font-size: 15px; color: var(--color-text-secondary); text-align: center; margin-bottom: 48px; }

/* Steps */
.steps { padding: 72px 24px; }
.steps-row { display: flex; align-items: stretch; gap: 0; max-width: var(--container-max); margin: 0 auto; position: relative; }
.step-card {
  flex: 1; background: var(--color-card); border-radius: var(--radius-card);
  padding: 32px 24px; text-align: center; border: 1px solid var(--color-border);
  border-left: 3px solid transparent; box-shadow: var(--shadow-sm);
  transition: all .3s; position: relative;
}
.step-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-left-color: var(--color-primary); }
.step-num {
  width: 40px; height: 40px; border-radius: 50%; background: var(--color-primary);
  color: #fff; font-size: 16px; font-weight: 700; display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.step-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--color-text); }
.step-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }
.step-line {
  width: 60px; height: 2px; background: var(--color-primary); align-self: center;
  position: relative; flex-shrink: 0;
}
.step-line::after {
  content: ""; position: absolute; right: -2px; top: -3px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--color-primary);
}

/* News */
.news { padding: 72px 24px; background: var(--color-bg); }
.news-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  max-width: var(--container-max); margin: 0 auto;
}
.news-card {
  background: var(--color-card); border-radius: var(--radius-card); overflow: hidden;
  border: 1px solid var(--color-border); box-shadow: var(--shadow-sm);
  transition: all .3s; display: flex; flex-direction: column;
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); text-decoration: none; }
.news-thumb { height: 180px; background-size: cover; background-position: center; background-color: var(--color-border); }
.news-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.news-cat {
  align-self: flex-start; padding: 3px 10px; background: var(--color-primary-soft);
  color: var(--color-primary); border-radius: 999px; font-size: 12px; font-weight: 600;
  margin-bottom: 10px;
}
.news-body h3 { font-size: 16px; font-weight: 600; color: var(--color-text); margin-bottom: 8px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-body p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; flex: 1; }
.news-body time { font-size: 12px; color: var(--color-text-muted); }
.empty-state {
  grid-column: 1 / -1; display: flex; align-items: center; justify-content: center;
  padding: 60px 24px; border: 2px dashed var(--color-border); border-radius: var(--radius-card);
  background: var(--color-card);
}
.empty-state p { color: var(--color-text-muted); font-size: 14px; }

/* Cases */
.cases { padding: 72px 24px; background: var(--color-card); }
.cases-layout { max-width: var(--container-max); margin: 0 auto; display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 48px; align-items: start; }
.case-stats { display: flex; flex-direction: column; gap: 24px; }
.stat-item {
  background: var(--color-bg); border-radius: var(--radius-card); padding: 28px;
  border: 1px solid var(--color-border); text-align: center;
}
.stat-num { font-size: 36px; font-weight: 700; color: var(--color-primary); line-height: 1.2; }
.stat-label { font-size: 14px; color: var(--color-text-secondary); margin-top: 6px; }
.case-quotes { display: flex; flex-direction: column; gap: 20px; }
.case-item {
  background: var(--color-card); border-radius: var(--radius-card); padding: 24px;
  border: 1px solid var(--color-border); border-top: 4px solid var(--color-accent);
  box-shadow: var(--shadow-sm); transition: all .3s;
}
.case-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.case-text { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; margin-bottom: 16px; position: relative; padding-left: 16px; }
.case-text::before { content: "\201C"; position: absolute; left: 0; top: -4px; font-size: 24px; color: var(--color-accent); font-family: Georgia, serif; }
.case-user { display: flex; align-items: center; gap: 12px; }
.case-avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--color-primary-soft);
  display: flex; align-items: center; justify-content: center; color: var(--color-primary);
  font-size: 14px; font-weight: 600;
}
.case-name { font-size: 14px; font-weight: 600; color: var(--color-text); }
.case-role { font-size: 12px; color: var(--color-text-muted); }

/* FAQ */
.faq { padding: 72px 24px; background: var(--color-bg); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-card); margin-bottom: 12px; overflow: hidden; box-shadow: var(--shadow-sm); transition: box-shadow .3s; }
.faq-item.active { box-shadow: var(--shadow-hover); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 18px 20px; background: none; border: none; font-size: 15px; font-weight: 600;
  color: var(--color-text); text-align: left; gap: 16px;
}
.faq-q:hover { color: var(--color-primary); }
.faq-icon { font-size: 16px; color: var(--color-primary); flex-shrink: 0; transition: transform .3s; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a-inner { padding: 0 20px 18px; font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; border-top: 1px solid var(--color-border); padding-top: 14px; }

/* CTA */
.cta { padding: 72px 24px; background: linear-gradient(135deg, rgba(74,143,228,0.08), rgba(240,165,0,0.05)); }
.cta-box { max-width: 760px; margin: 0 auto; text-align: center; }
.cta-box h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; color: var(--color-text); }
.cta-box p { font-size: 15px; color: var(--color-text-secondary); margin-bottom: 28px; }
.cta-form { display: flex; gap: 12px; max-width: 460px; margin: 0 auto; }
.cta-form input {
  flex: 1; padding: 12px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-input);
  font-size: 15px; background: var(--color-card); transition: border-color .2s, box-shadow .2s;
}
.cta-form input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(74,143,228,0.15); }
.cta-form input::placeholder { color: var(--color-text-muted); }
.cta-secure { font-size: 12px; color: var(--color-text-muted); margin-top: 16px; display: flex; align-items: center; justify-content: center; gap: 6px; }

/* Footer */
.footer {
  background: var(--color-card); border-top: 1px solid var(--color-border);
  padding: 48px 24px 24px; flex-shrink: 0;
}
.footer-grid {
  max-width: var(--container-max); margin: 0 auto; display: grid;
  grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 32px;
}
.footer-brand .logo-text { font-size: 16px; }
.footer-brand p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.6; margin-top: 12px; }
.footer h4 { font-size: 14px; font-weight: 600; margin-bottom: 12px; color: var(--color-text); }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { font-size: 13px; color: var(--color-text-secondary); }
.footer-links a:hover { color: var(--color-primary); }
.footer-contact { font-size: 13px; color: var(--color-text-secondary); line-height: 1.8; }
.footer-contact i { color: var(--color-primary); width: 20px; }
.footer-bottom {
  max-width: var(--container-max); margin: 0 auto; border-top: 1px solid var(--color-border);
  padding-top: 16px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-size: 12px; color: var(--color-text-muted);
}

/* Responsive */
@media (max-width: 1199px) {
  .sidebar { width: var(--sidebar-w-tablet); }
  .sidebar-logo { justify-content: center; padding: 0; }
  .logo-text { display: none; }
  .nav-item { justify-content: center; padding: 12px 0; border-left: none; }
  .nav-item span { display: none; }
  .sidebar-bottom { padding: 12px 8px; }
  .sidebar-cta { font-size: 0; padding: 10px; }
  .sidebar-cta::after { content: "\f0e7"; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: 15px; }
  .sidebar-contact { font-size: 0; }
  .content-wrapper { margin-left: var(--sidebar-w-tablet); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-layout { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 767px) {
  .sidebar { display: none; }
  .content-wrapper { margin-left: 0; }
  .mobile-header { display: flex; }
  .main-content { padding-top: 56px; }
  .hero { padding: 48px 16px 40px; }
  .hero-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-text h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-secondary { justify-content: center; }
  .steps-row { flex-direction: column; gap: 12px; }
  .step-line { width: 2px; height: 40px; margin: 0 auto; }
  .step-line::after { display: none; }
  .section { padding: 48px 16px; }
  .section-title { font-size: 24px; }
  .news-grid { grid-template-columns: 1fr; }
  .cases-layout { grid-template-columns: 1fr; gap: 24px; }
  .stat-num { font-size: 30px; }
  .cta-form { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .hero-text h1 { font-size: 24px; }
  .badge { font-size: 12px; padding: 5px 10px; }
  .section-title { font-size: 22px; }
  .step-card { padding: 24px 16px; }
}

/* roulang page: article */
:root {
  --primary: #4A8FE4;
  --primary-dark: #3B7CBF;
  --primary-deep: #2F6FB0;
  --primary-bg: rgba(74, 143, 228, 0.08);
  --accent: #F0A500;
  --bg: #F6F8FB;
  --card: #FFFFFF;
  --text: #1A2634;
  --text-secondary: #5E6E82;
  --text-muted: #9AA9B9;
  --border: #E6EDF5;
  --radius-card: 10px;
  --radius-btn: 6px;
  --radius-input: 8px;
  --shadow-sm: 0 1px 3px rgba(26,38,52,0.08), 0 4px 12px rgba(26,38,52,0.05);
  --shadow-hover: 0 8px 24px rgba(26,38,52,0.10);
  --sidebar-width: 220px;
  --sidebar-width-tablet: 68px;
  --mobile-header-height: 56px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover {
  color: var(--primary-deep);
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 侧栏 ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 16px 12px 20px;
  z-index: 200;
  transition: width .25s ease;
}
.sidebar-logo {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  overflow: hidden;
  white-space: nowrap;
}
.logo-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  box-shadow: 0 2px 8px rgba(74, 143, 228, 0.3);
}
.logo-text {
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
  letter-spacing: .5px;
}
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  transition: background .2s ease, color .2s ease;
  position: relative;
  white-space: nowrap;
}
.nav-item i {
  width: 18px;
  text-align: center;
  font-size: 15px;
  flex-shrink: 0;
}
.nav-item:hover {
  background: rgba(74, 143, 228, 0.04);
  color: var(--primary);
}
.nav-item.active {
  background: var(--primary-bg);
  color: var(--primary);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}
.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: 12px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: all .2s ease;
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  box-shadow: 0 4px 14px rgba(74, 143, 228, 0.3);
}
.btn-primary:active {
  background: var(--primary-deep);
  transform: translateY(1px);
}
.btn-primary:focus-visible {
  outline: 2px solid rgba(74, 143, 228, 0.5);
  outline-offset: 2px;
}
.btn-secondary {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-secondary:hover {
  background: rgba(74, 143, 228, 0.05);
  color: var(--primary-deep);
}
.btn-secondary:active {
  background: rgba(74, 143, 228, 0.10);
}
.btn-secondary:focus-visible {
  outline: 2px solid rgba(74, 143, 228, 0.5);
  outline-offset: 2px;
}
.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
  border-radius: 6px;
}
.btn-block {
  width: 100%;
}
.btn i {
  font-size: 14px;
  transition: transform .2s ease;
}
.btn:hover i {
  transform: translateX(2px);
}

/* ===== 主内容容器 ===== */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}
.main {
  flex: 1;
  padding: 32px 24px 56px;
}
.article-wrap {
  max-width: 960px;
  margin: 0 auto;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: color .2s;
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  color: var(--text-muted);
}
.breadcrumb .current {
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 300px;
}

/* ===== 文章卡片 ===== */
.article-card {
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  padding: 40px 48px 48px;
  margin-bottom: 32px;
}
.article-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 28px;
  margin-bottom: 32px;
}
.article-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 18px;
  word-break: break-word;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  color: var(--text-secondary);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item i {
  color: var(--primary);
  font-size: 13px;
}

/* ===== 正文排版 ===== */
.article-body {
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.2px;
  color: var(--text);
  word-break: break-word;
}
.article-body p {
  margin: 0 0 1.5em;
}
.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 1.8em 0 0.8em;
  color: var(--text);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 1.5em 0 0.6em;
  color: var(--text);
  line-height: 1.4;
}
.article-body h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 1.4em 0 0.5em;
  color: var(--text);
}
.article-body img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1.2em 0;
}
.article-body figure {
  margin: 1.2em 0;
}
.article-body figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 6px;
}
.article-body blockquote {
  border-left: 3px solid var(--primary);
  background: #F0F4FA;
  padding: 16px 22px;
  margin: 1.5em 0;
  border-radius: 0 8px 8px 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-body blockquote p {
  margin: 0 0 0.4em;
}
.article-body blockquote p:last-child {
  margin-bottom: 0;
}
.article-body ul,
.article-body ol {
  margin: 0 0 1.5em;
  padding-left: 1.4em;
}
.article-body ul {
  list-style: disc;
}
.article-body ol {
  list-style: decimal;
}
.article-body li {
  margin-bottom: 0.6em;
}
.article-body a {
  color: var(--primary);
  text-decoration: underline;
  word-break: break-all;
}
.article-body a:hover {
  color: var(--primary-deep);
}
.article-body code {
  background: #F0F4FA;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.article-body pre {
  background: #F0F4FA;
  padding: 16px 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5em 0;
  font-size: 14px;
  line-height: 1.6;
}
.article-body pre code {
  background: none;
  padding: 0;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 15px;
}
.article-body th,
.article-body td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  text-align: left;
}
.article-body th {
  background: #F0F4FA;
  font-weight: 600;
}

/* ===== 相关推荐 ===== */
.related-section {
  margin-top: 8px;
}
.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 24px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease;
}
.related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.related-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #EDF2F8;
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.related-card:hover .related-thumb img {
  transform: scale(1.04);
}
.related-info {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 4px 12px;
  background: var(--primary-bg);
  color: var(--primary);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.related-info h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  margin: 10px 0 8px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.related-date {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

/* ===== 空态 ===== */
.empty-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}
.empty-box {
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-card);
  padding: 48px 56px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.empty-box i {
  font-size: 42px;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: block;
}
.empty-box p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* ===== CTA 条 ===== */
.article-cta {
  margin-top: 40px;
  background: linear-gradient(135deg, rgba(74, 143, 228, 0.10), rgba(74, 143, 228, 0.03));
  border-radius: var(--radius-card);
  padding: 40px 48px;
  text-align: center;
  border: 1px solid rgba(74, 143, 228, 0.12);
}
.article-cta h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.article-cta p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ===== 页脚 ===== */
.footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 48px 24px 0;
}
.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 14px;
  max-width: 360px;
}
.footer-nav h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.footer-contact i {
  color: var(--primary);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 0;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 移动端顶栏 ===== */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--mobile-header-height);
  background: #fff;
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 300;
}
.mobile-menu-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 18px;
  border-radius: 8px;
  transition: background .2s;
}
.mobile-menu-btn:hover {
  background: var(--primary-bg);
}
.mobile-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.mobile-cta {
  padding: 8px 16px;
  font-size: 13px;
}

/* ===== 抽屉菜单 ===== */
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(26, 38, 52, 0.45);
  z-index: 400;
  opacity: 0;
  transition: opacity .3s ease;
  pointer-events: none;
}
.drawer-overlay.show {
  opacity: 1;
  pointer-events: auto;
}
.drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 85%;
  max-width: 320px;
  height: 100vh;
  background: var(--card);
  z-index: 500;
  transform: translateX(-100%);
  transition: transform .3s ease;
  flex-direction: column;
  padding: 16px 16px 20px;
  overflow-y: auto;
}
.drawer.open {
  transform: translateX(0);
}
.drawer-header {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.drawer-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-secondary);
  border-radius: 8px;
}
.drawer-close:hover {
  background: var(--primary-bg);
  color: var(--primary);
}
.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}
.drawer-nav .nav-item {
  padding: 13px 14px;
  font-size: 15px;
}
.drawer-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: 12px;
}

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .sidebar {
    width: var(--sidebar-width-tablet);
    padding: 16px 8px 20px;
    align-items: center;
  }
  .sidebar-logo {
    padding: 0;
    justify-content: center;
  }
  .sidebar-logo .logo-text {
    display: none;
  }
  .sidebar-nav {
    width: 100%;
  }
  .nav-item {
    justify-content: center;
    padding: 12px 0;
  }
  .nav-item span {
    display: none;
  }
  .nav-item.active::before {
    left: -8px;
  }
  .sidebar-footer .btn span {
    display: none;
  }
  .sidebar-footer .btn {
    padding: 10px 0;
  }
  .main-wrapper {
    margin-left: var(--sidebar-width-tablet);
  }
}
@media (max-width: 767px) {
  .sidebar {
    display: none;
  }
  .main-wrapper {
    margin-left: 0;
  }
  .mobile-header {
    display: flex;
  }
  .drawer {
    display: flex;
  }
  .drawer-overlay {
    display: block;
  }
  .main {
    padding: 20px 16px 40px;
  }
  .article-card {
    padding: 24px 20px 32px;
    border-radius: 8px;
  }
  .article-title {
    font-size: 24px;
  }
  .article-meta {
    gap: 12px;
    flex-wrap: wrap;
  }
  .article-body {
    font-size: 15px;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .breadcrumb .current {
    max-width: 180px;
  }
  .article-cta {
    padding: 28px 20px;
  }
  .article-cta h2 {
    font-size: 20px;
  }
  .footer {
    padding: 36px 16px 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .article-actions {
    flex-direction: column;
  }
  .article-actions .btn {
    width: 100%;
  }
  .empty-box {
    padding: 36px 24px;
    width: 100%;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 12px;
  }
  .main {
    padding: 16px 12px 32px;
  }
  .article-card {
    padding: 20px 16px 28px;
  }
  .article-title {
    font-size: 22px;
  }
  .related-card {
    border-radius: 8px;
  }
  .related-info {
    padding: 14px 16px 16px;
  }
  .mobile-logo {
    font-size: 15px;
  }
  .mobile-cta {
    padding: 6px 12px;
    font-size: 12px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #4A8FE4;
  --primary-dark: #2F6FB0;
  --primary-deep: #1F5A94;
  --primary-light: #E8F1FB;
  --accent: #F0A500;
  --bg: #F6F8FB;
  --card: #FFFFFF;
  --text: #1A2634;
  --text-mid: #5E6E82;
  --text-weak: #9AA9B9;
  --border: #E6EDF5;
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(26,38,52,0.08), 0 4px 12px rgba(26,38,52,0.05);
  --shadow-hover: 0 8px 24px rgba(26,38,52,0.10);
  --sidebar-w: 220px;
  --sidebar-w-sm: 68px;
  --spacing: 80px;
  --transition: all 0.25s ease;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}
img {
  max-width: 100%;
  display: block;
}
ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
p, h1, h2, h3, h4, h5, h6 {
  margin: 0;
}
button, input {
  font-family: inherit;
}
:focus-visible {
  outline: 2px solid rgba(74,143,228,0.5);
  outline-offset: 2px;
}

/* ===== 布局框架 ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width 0.3s ease;
}
.sidebar-logo {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 22px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: 0.3px;
}
.sidebar-nav {
  padding: 16px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}
.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-mid);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 16px;
  flex-shrink: 0;
}
.nav-item:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  text-decoration: none;
}
.nav-item.active {
  background: rgba(74,143,228,0.08);
  color: var(--primary);
  font-weight: 700;
}
.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 22px;
  border-radius: 0 3px 3px 0;
  background: var(--primary);
}
.sidebar-bottom {
  padding: 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  line-height: 1.4;
}
.btn i {
  transition: transform 0.2s ease;
}
.btn:hover {
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  box-shadow: 0 8px 20px rgba(74,143,228,0.28);
}
.btn-primary:active {
  background: var(--primary-deep);
}
.btn-primary:focus-visible {
  outline: 2px solid rgba(74,143,228,0.5);
  outline-offset: 2px;
}
.btn-primary:hover i.fa-arrow-right {
  transform: translateX(3px);
}
.btn-outline {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: rgba(74,143,228,0.06);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
}
.btn-block {
  width: 100%;
}
.btn-lg {
  padding: 14px 34px;
  font-size: 17px;
}
.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 32px 64px;
  flex: 1;
}

/* ===== 移动端顶部栏 ===== */
.top-bar {
  display: none;
  position: sticky;
  top: 0;
  height: 60px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 200;
  box-shadow: 0 1px 4px rgba(26,38,52,0.04);
}
.hamburger {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text);
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.hamburger:hover {
  background: var(--primary-light);
}
.top-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
}
.top-logo .logo-icon {
  width: 28px;
  height: 28px;
  font-size: 13px;
}
.top-cta {
  background: var(--primary);
  color: #fff;
  border-radius: 6px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
}
.top-cta:hover {
  background: var(--primary-dark);
  color: #fff;
  text-decoration: none;
}

/* ===== 抽屉菜单 ===== */
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(26,38,52,0.42);
  z-index: 500;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.drawer-overlay.open {
  display: block;
  opacity: 1;
}
.drawer {
  position: fixed;
  top: 0;
  left: -85%;
  width: 85%;
  max-width: 320px;
  height: 100%;
  background: #fff;
  z-index: 600;
  transition: left 0.3s ease;
  display: flex;
  flex-direction: column;
  box-shadow: 4px 0 24px rgba(26,38,52,0.12);
}
.drawer.open {
  left: 0;
}
.drawer-header {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.drawer-header .logo-text {
  font-size: 15px;
}
.drawer-close {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  font-size: 18px;
  color: var(--text-mid);
  width: 34px;
  height: 34px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.drawer-close:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.drawer-nav {
  padding: 16px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.drawer-nav .nav-item {
  padding: 13px 14px;
  font-size: 15px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 48px 50px;
  background: linear-gradient(135deg, #EAF2FC 0%, #F6F8FB 58%);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: var(--spacing);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity: 0.07;
  z-index: 0;
}
.hero-breadcrumb {
  position: relative;
  z-index: 2;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-breadcrumb a {
  color: var(--text-weak);
}
.hero-breadcrumb a:hover {
  color: var(--primary);
}
.hero-breadcrumb .separator {
  color: var(--border);
}
.hero-breadcrumb .current {
  color: var(--text-mid);
}
.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.hero-title {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.28;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.hero-title em {
  font-style: normal;
  color: var(--primary);
}
.hero-desc {
  font-size: 16px;
  color: var(--text-mid);
  line-height: 1.75;
  margin-bottom: 28px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(74,143,228,0.08);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
}
.badge i {
  font-size: 12px;
}
.hero-media {
  position: relative;
}
.hero-img {
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  width: 100%;
  height: auto;
  object-fit: cover;
}
.hero-float-card {
  position: absolute;
  bottom: 18px;
  left: -18px;
  background: #fff;
  border-radius: 10px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-hover);
  border-left: 3px solid var(--accent);
}
.hero-float-card .float-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}
.hero-float-card strong {
  display: block;
  font-size: 13px;
  color: var(--text);
}
.hero-float-card small {
  font-size: 12px;
  color: var(--text-weak);
}

/* ===== 通用板块 ===== */
.section {
  margin-bottom: var(--spacing);
}
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 40px;
}
.section-header.left {
  text-align: left;
  margin: 0 0 26px;
}
.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 1px;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: 0.3px;
}
.section-desc {
  font-size: 15px;
  color: var(--text-mid);
  line-height: 1.7;
}

/* ===== 核心优势 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(230,237,245,0.6);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.feature-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.25s ease;
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.65;
}

/* ===== 适用场景 ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.scenario-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-top: 4px solid var(--accent);
}
.scenario-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.scenario-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(240,165,0,0.12);
  color: var(--accent);
  font-size: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.scenario-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}
.scenario-card p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.7;
}

/* ===== 内容手册（两栏） ===== */
.manual-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 28px;
  align-items: start;
}
.manual-main {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.manual-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(230,237,245,0.5);
}
.manual-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.manual-thumb {
  height: 130px;
  overflow: hidden;
  background: var(--primary-light);
}
.manual-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.manual-card:hover .manual-thumb img {
  transform: scale(1.04);
}
.manual-card-body {
  padding: 18px 18px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.manual-card-body h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.manual-card-body p {
  font-size: 13.5px;
  color: var(--text-mid);
  line-height: 1.65;
  flex: 1;
}
.manual-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.manual-link:hover i {
  transform: translateX(2px);
}
.manual-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.about-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
}
.about-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
}
.about-card p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.7;
}
.about-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about-img img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

/* ===== 流程步骤 ===== */
.steps-wrap {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}
.steps-list {
  display: flex;
  gap: 20px;
  position: relative;
}
.steps-list::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 6%;
  right: 6%;
  height: 2px;
  background: var(--border);
  z-index: 1;
}
.step-item {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 2;
}
.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  box-shadow: 0 6px 16px rgba(74,143,228,0.3);
}
.step-icon {
  font-size: 26px;
  color: var(--primary);
  margin: 12px 0 8px;
}
.step-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}
.step-item p {
  font-size: 13px;
  color: var(--text-mid);
  line-height: 1.6;
  padding: 0 8px;
}

/* ===== FAQ ===== */
.faq-section {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow);
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  text-align: left;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  transition: color 0.2s;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.2s ease;
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.75;
  padding: 0 4px;
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 4px 20px;
}

/* ===== CTA ===== */
.cta-section {
  margin-bottom: var(--spacing);
}
.cta-box {
  background: linear-gradient(135deg, #EAF2FC, rgba(240,165,0,0.06));
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity: 0.05;
}
.cta-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
}
.cta-desc {
  font-size: 15px;
  color: var(--text-mid);
  max-width: 520px;
  margin: 0 auto 28px;
  position: relative;
}
.cta-form {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 12px;
  position: relative;
}
.cta-input {
  width: 340px;
  max-width: 100%;
  height: 48px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 16px;
  font-size: 15px;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.cta-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(74,143,228,0.12);
}
.cta-input::placeholder {
  color: var(--text-weak);
}
.cta-note {
  font-size: 12px;
  color: var(--text-weak);
  position: relative;
}
.cta-note i {
  color: #4CAF50;
}

/* ===== 页脚 ===== */
.footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 48px 32px 24px;
  margin-left: var(--sidebar-w);
}
.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
}
.footer-brand .logo-text {
  font-size: 17px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-mid);
  margin-top: 14px;
  line-height: 1.7;
  max-width: 380px;
}
.footer-nav h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-mid);
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact p i {
  color: var(--primary);
  width: 16px;
}
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
}
.back-home-wrap {
  text-align: center;
  margin: 40px 0 0;
}

/* ===== 响应式 ===== */
@media (max-width: 1199px) and (min-width: 768px) {
  .sidebar {
    width: var(--sidebar-w-sm);
  }
  .sidebar .logo-text,
  .sidebar .nav-item span {
    display: none;
  }
  .sidebar-logo {
    justify-content: center;
    padding: 0;
  }
  .sidebar-nav {
    padding: 16px 8px;
  }
  .nav-item {
    justify-content: center;
    padding: 13px 0;
  }
  .nav-item::after {
    content: attr(data-label);
    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    background: var(--text);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 5px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 999;
  }
  .nav-item:hover::after {
    opacity: 1;
  }
  .sidebar-bottom .btn span {
    display: none;
  }
  .sidebar-bottom .btn {
    padding: 12px 0;
  }
  .main-content {
    margin-left: var(--sidebar-w-sm);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .manual-grid {
    grid-template-columns: 1fr;
  }
  .steps-list::before {
    display: none;
  }
  .footer {
    margin-left: var(--sidebar-w-sm);
  }
}
@media (max-width: 767px) {
  .sidebar {
    display: none;
  }
  .top-bar {
    display: flex;
  }
  .main-content {
    margin-left: 0;
  }
  .page-container {
    padding: 20px 16px 48px;
  }
  .footer {
    margin-left: 0;
    padding: 40px 20px 20px;
  }
  .hero {
    padding: 32px 22px;
    border-radius: 12px;
  }
  .hero-content {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .hero-title {
    font-size: 28px;
  }
  .hero-desc {
    font-size: 15px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-float-card {
    left: 12px;
    bottom: 12px;
  }
  .section {
    margin-bottom: 56px;
  }
  .section-title {
    font-size: 24px;
  }
  .features-grid,
  .scenario-grid,
  .manual-main {
    grid-template-columns: 1fr;
  }
  .manual-side {
    flex-direction: column;
  }
  .steps-wrap {
    padding: 24px;
  }
  .steps-list {
    flex-direction: column;
    gap: 32px;
  }
  .faq-section {
    padding: 24px 18px;
  }
  .cta-box {
    padding: 32px 20px;
  }
  .cta-form {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-input {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* roulang page: category2 */
:root {
  --primary: #4A8FE4;
  --primary-dark: #2F6FB0;
  --primary-deep: #276398;
  --primary-light: rgba(74, 143, 228, 0.08);
  --accent: #F0A500;
  --accent-light: rgba(240, 165, 0, 0.12);
  --bg: #F6F8FB;
  --card: #FFFFFF;
  --text: #1A2634;
  --text-secondary: #5E6E82;
  --text-muted: #9AA9B9;
  --border: #E6EDF5;
  --border-light: #EFF3F8;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 3px rgba(26, 38, 52, 0.08), 0 4px 12px rgba(26, 38, 52, 0.05);
  --shadow-hover: 0 8px 24px rgba(26, 38, 52, 0.10);
  --sidebar-width: 220px;
  --sidebar-collapsed: 68px;
  --section-gap: 80px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.7;
  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;
}
a:hover {
  color: var(--primary);
}
button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
}
input {
  font-family: inherit;
}
ul, ol {
  list-style: none;
}
.app-shell {
  display: flex;
  min-height: 100vh;
}
/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-width);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: transform 0.3s ease;
}
.sidebar-logo {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
}
.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, #6ba8e8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  box-shadow: 0 2px 8px rgba(74, 143, 228, 0.25);
}
.logo-text {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: 0.3px;
}
.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: background 0.2s, color 0.2s;
  position: relative;
  white-space: nowrap;
}
.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 16px;
  flex-shrink: 0;
}
.nav-item:hover {
  background: rgba(74, 143, 228, 0.04);
  color: var(--primary);
}
.nav-item.active {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 22px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}
.sidebar-cta {
  padding: 16px;
  border-top: 1px solid var(--border-light);
  flex-shrink: 0;
}
.sidebar-cta .btn-primary {
  width: 100%;
  justify-content: center;
}
/* ===== Mobile Header ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  z-index: 1100;
}
.hamburger {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text);
  border-radius: var(--radius-sm);
}
.hamburger:hover {
  background: var(--bg);
}
.mobile-logo {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
}
.mobile-logo .logo-icon {
  width: 28px;
  height: 28px;
  font-size: 12px;
}
.btn-xs {
  padding: 7px 16px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}
/* ===== Overlay ===== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(26, 38, 52, 0.4);
  z-index: 1050;
}
.sidebar-overlay.show {
  display: block;
}
/* ===== Main ===== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
  line-height: 1.4;
}
.btn-primary i {
  transition: transform 0.2s;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  box-shadow: 0 6px 16px rgba(74, 143, 228, 0.25);
}
.btn-primary:hover i {
  transform: translateX(2px);
}
.btn-primary:focus-visible {
  outline: 2px solid rgba(74, 143, 228, 0.5);
  outline-offset: 2px;
}
.btn-primary:active {
  background: var(--primary-deep);
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: #fff;
  color: var(--primary);
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary);
  transition: background 0.2s, box-shadow 0.2s;
}
.btn-secondary:hover {
  background: rgba(74, 143, 228, 0.05);
  color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(74, 143, 228, 0.12);
}
.btn-secondary:active {
  background: rgba(74, 143, 228, 0.1);
}
.btn-secondary:focus-visible {
  outline: 2px solid rgba(74, 143, 228, 0.5);
  outline-offset: 2px;
}
.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}
/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 72px 24px 64px;
  background: linear-gradient(135deg, rgba(74, 143, 228, 0.10) 0%, rgba(246, 248, 251, 0.85) 55%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border-light);
}
.page-hero .container {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--text-secondary);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  color: var(--text-muted);
}
.breadcrumb .current {
  color: var(--text-muted);
  font-weight: 500;
}
.page-hero h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}
.page-hero .hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: 28px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}
.badge i {
  color: var(--primary);
  font-size: 14px;
}
/* ===== Section Common ===== */
.section-block {
  padding: var(--section-gap) 0;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: 0.2px;
}
.section-header p {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.7;
}
/* ===== Overview Section ===== */
.overview-section {
  padding: var(--section-gap) 0 56px;
}
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
}
.ov-left {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-content: start;
}
.service-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--primary);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.service-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.service-card:nth-child(3) {
  grid-column: span 2;
}
.service-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  border: 1px solid rgba(74, 143, 228, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 16px;
}
.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.service-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
/* ===== Sidebar ===== */
.category-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.about-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.about-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.about-card h3 i {
  color: var(--primary);
  font-size: 16px;
}
.about-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 18px;
}
.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  display: inline-block;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 999px;
  border: 1px solid rgba(74, 143, 228, 0.12);
}
.tag-accent {
  color: #8a6a00;
  background: var(--accent-light);
  border-color: rgba(240, 165, 0, 0.2);
}
.sidebar-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.sidebar-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.sidebar-image:hover img {
  transform: scale(1.03);
}
/* ===== Process ===== */
.process-section {
  padding: 56px 0;
  background: #fff;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  margin-top: 8px;
}
.process-steps::before {
  content: "";
  position: absolute;
  top: 40px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, rgba(74, 143, 228, 0.25) 100%);
  z-index: 0;
}
.step-item {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  position: relative;
  z-index: 1;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.step-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.step-number {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 14px rgba(74, 143, 228, 0.3);
}
.step-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.step-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
}
/* ===== Scenario ===== */
.scenario-section {
  padding: var(--section-gap) 0 48px;
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.scenario-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--accent);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.scenario-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.scenario-card .scenario-icon {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 14px;
}
.scenario-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}
.scenario-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.scenario-tags-wrap {
  text-align: center;
  padding: 8px 0 0;
}
.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
/* ===== FAQ ===== */
.faq-section {
  padding: var(--section-gap) 0;
  background: #fff;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border-light);
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: transparent;
  transition: color 0.2s;
  line-height: 1.5;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question i {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg);
  color: var(--primary);
  font-size: 13px;
  transition: background 0.2s, transform 0.25s;
}
.faq-item.active .faq-question i {
  background: var(--primary);
  color: #fff;
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 4px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}
/* ===== CTA ===== */
.cta-section {
  padding: var(--section-gap) 0;
  background: linear-gradient(135deg, rgba(74, 143, 228, 0.08) 0%, rgba(240, 165, 0, 0.05) 100%);
}
.cta-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--card);
  border-radius: 14px;
  padding: 48px 40px;
  text-align: center;
  box-shadow: var(--shadow-hover);
  border: 1px solid var(--border-light);
}
.cta-card h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.cta-card > p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.7;
}
.cta-form {
  display: flex;
  gap: 12px;
  max-width: 520px;
  margin: 0 auto 16px;
}
.cta-form input {
  flex: 1;
  height: 48px;
  padding: 0 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.cta-form input::placeholder {
  color: var(--text-muted);
}
.cta-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(74, 143, 228, 0.15);
  background: #fff;
}
.cta-security {
  font-size: 13px;
  color: var(--text-muted);
}
.cta-security i {
  color: var(--primary);
  margin-right: 4px;
}
/* ===== Back Home ===== */
.back-home {
  padding: 32px 24px 8px;
  text-align: center;
}
/* ===== Footer ===== */
.footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 56px 24px 0;
  margin-top: 40px;
}
.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo-icon {
  width: 36px;
  height: 36px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-top: 16px;
  max-width: 320px;
}
.footer-nav h4,
.footer-contact h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact i {
  color: var(--primary);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid var(--border-light);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
/* ===== Media Queries ===== */
@media (max-width: 1199px) {
  .sidebar {
    width: var(--sidebar-collapsed);
  }
  .sidebar-logo {
    padding: 0;
    justify-content: center;
  }
  .logo-text {
    display: none;
  }
  .sidebar-nav {
    padding: 12px 8px;
    align-items: center;
  }
  .nav-item {
    justify-content: center;
    width: 48px;
    height: 48px;
    padding: 0;
  }
  .nav-item span {
    display: none;
  }
  .nav-item i {
    font-size: 18px;
  }
  .sidebar-cta {
    display: none;
  }
  .main-content {
    margin-left: var(--sidebar-collapsed);
  }
  .overview-grid {
    grid-template-columns: 1fr 280px;
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .process-steps::before {
    display: none;
  }
}
@media (max-width: 991px) {
  .overview-grid {
    grid-template-columns: 1fr;
  }
  .category-sidebar {
    flex-direction: row;
  }
  .about-card {
    flex: 1;
  }
  .sidebar-image {
    flex: 1;
  }
  .scenario-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 767px) {
  .sidebar {
    transform: translateX(-100%);
    width: 260px;
    box-shadow: 4px 0 24px rgba(26, 38, 52, 0.15);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-logo {
    padding: 0 20px;
    justify-content: flex-start;
  }
  .logo-text {
    display: inline;
  }
  .sidebar-nav {
    padding: 16px 12px;
    align-items: stretch;
  }
  .nav-item {
    width: auto;
    height: auto;
    justify-content: flex-start;
    padding: 12px 14px;
  }
  .nav-item span {
    display: inline;
  }
  .sidebar-cta {
    display: block;
  }
  .mobile-header {
    display: flex;
  }
  .main-content {
    margin-left: 0;
    padding-top: 56px;
  }
  .page-hero {
    padding: 56px 16px 48px;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
    justify-content: center;
  }
  .hero-badges {
    gap: 8px;
  }
  .container {
    padding: 0 16px;
  }
  .section-block,
  .overview-section,
  .cta-section {
    padding: 48px 0;
  }
  .process-section {
    padding: 48px 0;
  }
  .section-header {
    margin-bottom: 32px;
  }
  .section-header h2 {
    font-size: 22px;
  }
  .overview-grid {
    gap: 24px;
  }
  .ov-left {
    grid-template-columns: 1fr;
  }
  .service-card:nth-child(3) {
    grid-column: span 1;
  }
  .category-sidebar {
    flex-direction: column;
  }
  .process-steps {
    grid-template-columns: 1fr;
  }
  .step-item {
    padding: 24px;
    text-align: left;
    display: flex;
    align-items: flex-start;
    gap: 14px;
  }
  .step-number {
    position: static;
    width: auto;
    height: auto;
    border-radius: 6px;
    padding: 2px 10px;
  }
  .step-icon {
    margin: 0;
    flex-shrink: 0;
  }
  .step-item h3,
  .step-item p {
    margin-left: 0;
  }
  .cta-card {
    padding: 32px 20px;
    border-radius: 12px;
  }
  .cta-form {
    flex-direction: column;
  }
  .cta-form input {
    width: 100%;
  }
  .cta-form .btn-primary {
    width: 100%;
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}