/* roulang page: index */
:root {
  --primary: #2E6E9E;
  --primary-dark: #235C86;
  --primary-light: #E8F0F7;
  --accent: #C34E5A;
  --bg: #F7FAFC;
  --card-bg: #FFFFFF;
  --text: #20303E;
  --muted: #627B8C;
  --subtle: #9AA7B4;
  --border: #E4EAF0;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-card: 0 4px 20px rgba(20, 50, 80, 0.06);
  --shadow-hover: 0 10px 28px rgba(20, 50, 80, 0.10);
  --font-sans: "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

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

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.grid-container {
  max-width: 1200px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--text);
}

.section-sub {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
  max-width: 640px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  margin-bottom: 32px;
}

.more-link {
  font-size: 14px;
  color: var(--primary);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  white-space: nowrap;
}

.more-link:hover {
  border-bottom-color: var(--primary);
}

/* ---------- Header / Nav ---------- */
.site-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: relative;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.logo:hover {
  color: var(--text);
}

.logo-domain {
  display: inline-block;
  font-size: 12px;
  font-weight: 400;
  color: var(--subtle);
  margin-left: 6px;
  letter-spacing: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  padding: 6px 2px;
  position: relative;
  letter-spacing: 0.02em;
}

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

.main-nav a.active {
  color: var(--text);
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -4px;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

.btn-nav {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 8px 18px;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--text);
}

.menu-toggle svg {
  display: block;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 88px 0 64px;
  background: linear-gradient(180deg, rgba(255,255,255,0.94) 0%, rgba(255,255,255,0.97) 60%, rgba(247,250,252,0.98) 100%), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 40px;
}

.hero h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 20px 0 16px;
  color: var(--text);
}

.hero-sub {
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
  margin-bottom: 30px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(35, 92, 134, 0.22);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  padding: 12px 24px;
  border: 1px solid var(--primary);
  border-radius: 8px;
  transition: all 0.2s ease;
}

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

.text-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--primary);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.text-link:hover {
  color: var(--primary-dark);
  border-bottom-color: var(--primary);
}

.hero-media {
  position: relative;
}

.hero-media::before {
  content: "";
  position: absolute;
  bottom: -18px;
  right: -18px;
  width: 78%;
  height: 82%;
  background: var(--primary-light);
  border-radius: 12px;
  z-index: 0;
}

.hero-media img {
  position: relative;
  z-index: 1;
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  width: 100%;
  object-fit: cover;
}

.hero-mini {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 60px;
  border-top: 1px solid var(--border);
}

.mini-item {
  padding: 18px 20px 0 0;
  border-left: 1px solid var(--border);
  margin-left: 20px;
}

.mini-item:first-child {
  border-left: none;
  margin-left: 0;
}

.mini-item strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.mini-item span {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ---------- Questions ---------- */
.questions {
  padding: 96px 0;
}

.questions .section-head {
  align-items: flex-start;
}

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

.questions-list li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  line-height: 1.5;
}

.q-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  color: var(--accent);
}

/* ---------- Solutions ---------- */
.solutions {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 96px 0;
}

.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

.solution-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

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

.solution-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: background 0.2s ease;
}

.solution-card:hover .solution-icon {
  background: #dde9f2;
}

.solution-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--text);
}

.solution-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  margin: 0 0 16px;
}

.solution-link {
  font-size: 13px;
  color: var(--primary);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.solution-link:hover {
  border-bottom-color: var(--primary);
  color: var(--primary-dark);
}

/* ---------- Stats ---------- */
.stats-wrap {
  background: #EDF4F9;
  padding: 64px 0;
}

.stats-head {
  text-align: center;
  margin-bottom: 40px;
}

.stats-head .section-title {
  margin-bottom: 4px;
}

.stats-head p {
  color: var(--muted);
  font-size: 15px;
  margin: 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: 8px 24px;
  border-left: 1px solid rgba(46, 110, 158, 0.18);
}

.stat-item:first-child {
  border-left: none;
}

.stat-num {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--accent);
  letter-spacing: -0.01em;
}

.stat-unit {
  font-size: 14px;
  color: var(--muted);
  font-weight: 500;
  margin-left: 2px;
}

.stat-label {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

/* ---------- FAQ ---------- */
.faq-section {
  padding: 96px 0;
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
  align-items: start;
}

.faq-media img {
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  width: 100%;
  object-fit: cover;
}

.faq-note {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 16px;
}

.accordion {
  margin: 0;
  list-style: none;
}

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

.accordion-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  padding: 18px 0;
  line-height: 1.5;
  border: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
  position: relative;
}

.accordion-title:hover,
.accordion-title:focus,
.accordion-title[aria-expanded="true"] {
  color: var(--primary);
  background: transparent;
}

.accordion-item.is-active .accordion-title {
  border-left: 3px solid var(--accent);
  padding-left: 12px;
  color: var(--text);
}

.accordion-title::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--subtle);
  margin-left: 12px;
  line-height: 1;
  transition: transform 0.2s ease;
}

.accordion-item.is-active .accordion-title::after {
  content: "−";
  color: var(--primary);
}

.accordion-content {
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
  padding: 0 0 24px;
  border: none;
}

/* ---------- CTA ---------- */
.cta-section {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding: 72px 0;
  text-align: center;
}

.cta-inner {
  max-width: 640px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

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

.cta-note {
  font-size: 12px;
  color: var(--subtle);
  margin-top: 14px;
}

/* ---------- News List ---------- */
.news-section {
  padding: 96px 0;
}

.news-list .news-item {
  display: flex;
  gap: 20px;
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
  border-radius: 10px;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.news-list .news-item:hover {
  background: #F8FAFC;
  box-shadow: var(--shadow-card);
}

.news-item {
  color: inherit;
}

.news-item:hover {
  color: inherit;
}

.news-date {
  width: 64px;
  flex-shrink: 0;
  padding-top: 4px;
}

.news-date .day {
  display: block;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--primary);
  transition: color 0.2s ease;
}

.news-item:hover .day {
  color: var(--accent);
}

.news-date .month {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

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

.news-body .tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 6px;
}

.news-body h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 6px 0 6px;
  line-height: 1.45;
  color: var(--text);
  transition: color 0.2s ease;
}

.news-body h3:hover,
.news-item:hover .news-body h3 {
  color: var(--primary);
}

.news-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0 0 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more {
  font-size: 13px;
  color: var(--primary);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}

.news-item:hover .read-more {
  border-bottom-color: var(--primary);
}

.empty-state {
  padding: 40px 16px;
  text-align: center;
  color: var(--subtle);
  font-size: 15px;
  border-bottom: 1px solid var(--border);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.footer-about {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 8px;
  max-width: 330px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 12px;
  color: var(--text);
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--muted);
  padding: 4px 0;
}

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

.footer-contact {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

.copyright {
  text-align: center;
  font-size: 13px;
  color: var(--subtle);
}

/* ---------- Reveal / Form ---------- */
.reveal {
  border-radius: 12px;
  border: none;
  box-shadow: 0 20px 60px rgba(20, 50, 80, 0.18);
  padding: 28px;
  background: var(--card-bg);
}

.reveal .close-button {
  color: var(--muted);
  font-size: 24px;
}

.reveal h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 20px;
  color: var(--text);
}

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

.form-field label {
  font-size: 14px;
  font-weight: 500;
  display: block;
  margin-bottom: 4px;
  color: var(--text);
}

.form-field input,
.form-field select {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--border);
  background: transparent;
  padding: 10px 2px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  transition: border-color 0.2s ease, border-width 0.2s ease;
  box-shadow: none;
  margin: 0;
}

.form-field input:focus,
.form-field select:focus {
  outline: none;
  border-bottom: 2px solid var(--primary);
  background: transparent;
  box-shadow: none;
}

.form-field select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23627B8C' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 4px center;
}

.form-note {
  font-size: 12px;
  color: var(--subtle);
  margin-top: 12px;
  line-height: 1.6;
}

.form-success {
  font-size: 14px;
  color: var(--primary-dark);
  margin-top: 12px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid {
    gap: 32px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .faq-layout {
    gap: 32px;
  }

  .questions-list li {
    font-size: 20px;
  }
}

@media (max-width: 840px) {
  .menu-toggle {
    display: inline-flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: calc(100% + 18px);
    left: -24px;
    right: -24px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 16px 32px rgba(20, 50, 80, 0.08);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px 24px;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 4px;
    font-size: 16px;
    border-bottom: 1px solid var(--border);
  }

  .main-nav a:last-child {
    border-bottom: none;
  }

  .main-nav a.active::after {
    left: 0;
    transform: none;
    bottom: 6px;
  }

  .btn-nav {
    text-align: center;
    margin-top: 8px;
  }

  .hero {
    padding: 64px 0 56px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .hero-mini {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 40px;
  }

  .mini-item {
    border-left: none;
    margin-left: 0;
    padding: 0;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
  }

  .mini-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .questions,
  .solutions,
  .faq-section,
  .news-section {
    padding: 64px 0;
  }

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px 0;
  }

  .stat-item {
    border-left: none;
    padding: 8px 16px;
  }

  .faq-layout {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .logo {
    font-size: 17px;
  }

  .logo-domain {
    font-size: 11px;
  }

  .hero {
    padding: 48px 0 48px;
  }

  .hero h1 {
    font-size: 28px;
  }

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

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

  .btn-primary,
  .btn-secondary {
    text-align: center;
  }

  .section-title {
    font-size: 24px;
  }

  .questions-list li {
    font-size: 18px;
    line-height: 1.55;
    align-items: flex-start;
  }

  .q-icon {
    width: 24px;
    height: 24px;
    margin-top: 2px;
  }

  .solution-card {
    padding: 22px;
  }

  .stat-num {
    font-size: 34px;
  }

  .news-list .news-item {
    gap: 14px;
    padding: 16px 10px;
  }

  .news-date {
    width: 48px;
  }

  .news-date .day {
    font-size: 22px;
  }

  .news-body h3 {
    font-size: 16px;
  }

  .news-body p {
    font-size: 13px;
  }

  .reveal {
    width: 92% !important;
    padding: 22px;
  }

  .footer-grid {
    padding-bottom: 24px;
  }
}

/* roulang page: category1 */
:root{
  --primary:#2E6E9E;
  --primary-dark:#235C86;
  --primary-light:#E8F0F7;
  --accent:#C34E5A;
  --bg:#F7FAFC;
  --card-bg:#FFFFFF;
  --border:#E4EAF0;
  --text:#20303E;
  --text-secondary:#627B8C;
  --text-muted:#9AA7B4;
  --radius:10px;
  --shadow:0 4px 20px rgba(20,50,80,0.06);
  --shadow-hover:0 10px 28px rgba(20,50,80,0.10);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Source Han Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -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-dark);}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;}
.grid-container{max-width:1200px !important;padding-left:20px !important;padding-right:20px !important;}
.site-header{
  background:#fff;
  border-bottom:1px solid var(--border);
  position:sticky;
  top:0;
  z-index:100;
}
.header-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 0;
}
.logo{
  font-size:20px;
  font-weight:700;
  color:var(--text);
  display:flex;
  align-items:baseline;
  gap:8px;
  letter-spacing:-0.01em;
  line-height:1.2;
}
.logo .logo-domain{
  font-size:12px;
  color:var(--text-muted);
  font-weight:400;
}
.menu-toggle{
  display:none;
  background:none;
  border:none;
  width:34px;
  height:34px;
  padding:4px;
  position:relative;
  z-index:120;
}
.menu-toggle span{
  display:block;
  height:1.5px;
  background:var(--text);
  border-radius:1px;
  margin:5px 0;
  transition:transform .25s ease,opacity .25s ease;
}
.menu-toggle.menu-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.menu-toggle.menu-open span:nth-child(2){opacity:0;}
.menu-toggle.menu-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}
.main-nav{
  display:flex;
  align-items:center;
  gap:38px;
}
.main-nav a:not(.btn-nav){
  font-size:15px;
  color:var(--text-secondary);
  font-weight:500;
  padding:6px 2px;
  position:relative;
  background-image:linear-gradient(currentColor,currentColor);
  background-size:0 2px;
  background-repeat:no-repeat;
  background-position:left 100%;
  transition:background-size .3s ease,color .2s ease;
}
.main-nav a:not(.btn-nav):hover{
  color:var(--primary);
  background-size:100% 2px;
}
.main-nav a:not(.btn-nav).active{
  color:var(--primary);
  background-image:none;
}
.main-nav a:not(.btn-nav).active::after{
  content:'';
  position:absolute;
  bottom:-2px;
  left:50%;
  transform:translateX(-50%);
  width:20px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.btn{
  display:inline-block;
  padding:12px 28px;
  border-radius:8px;
  font-size:15px;
  font-weight:600;
  border:none;
  cursor:pointer;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease,color .2s ease;
  text-align:center;
}
.btn-primary{
  background:var(--primary);
  color:#fff;
}
.btn-primary:hover{
  background:var(--primary-dark);
  transform:translateY(-1px);
  box-shadow:0 8px 20px rgba(46,110,158,.22);
  color:#fff;
}
.btn-outline{
  background:#fff;
  border:1px solid var(--primary);
  color:var(--primary);
}
.btn-outline:hover{
  background:var(--primary-light);
  color:var(--primary-dark);
  transform:translateY(-1px);
}
.btn-nav{
  background:var(--primary);
  color:#fff;
  padding:9px 20px;
  font-size:14px;
  border-radius:6px;
}
.btn-nav:hover{
  background:var(--primary-dark);
  transform:translateY(-1px);
  color:#fff;
}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.section{padding:96px 0;}
.section-label{
  display:block;
  font-size:13px;
  color:var(--accent);
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:8px;
}
.section-title{
  font-size:28px;
  font-weight:700;
  color:var(--text);
  line-height:1.35;
  letter-spacing:-0.01em;
  margin-bottom:12px;
}
.section-desc{
  font-size:15px;
  color:var(--text-secondary);
  max-width:640px;
  margin-bottom:32px;
}
.section-divider{
  border:none;
  border-top:1px solid var(--border);
  margin:0 0 40px;
}
/* 分类页头 */
.category-hero{
  background:linear-gradient(rgba(255,255,255,.92),rgba(255,255,255,.92)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.category-hero-inner{
  padding:76px 0;
  max-width:800px;
}
.category-kicker{
  display:inline-block;
  font-size:13px;
  color:var(--accent);
  font-weight:600;
  letter-spacing:.05em;
  margin-bottom:12px;
  background:rgba(255,255,255,.6);
  padding:4px 12px;
  border-radius:4px;
  border:1px solid rgba(195,78,90,.2);
}
.category-hero h1{
  font-size:36px;
  font-weight:700;
  color:var(--text);
  line-height:1.3;
  letter-spacing:-0.02em;
  margin-bottom:16px;
}
.category-hero p{
  font-size:16px;
  color:var(--text-secondary);
  line-height:1.75;
  margin-bottom:8px;
}
/* 资讯列表 */
.news-section{}
.news-list{
  display:flex;
  flex-direction:column;
  gap:24px;
}
.news-item{
  display:flex;
  background:#fff;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease;
}
.news-item:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
}
.news-thumb{
  flex:0 0 280px;
  min-height:190px;
  overflow:hidden;
}
.news-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.news-item:hover .news-thumb img{transform:scale(1.03);}
.news-body{
  flex:1;
  padding:26px 30px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:10px;
  flex-wrap:wrap;
}
.tag{
  display:inline-block;
  background:var(--primary-light);
  color:var(--primary);
  font-size:13px;
  font-weight:500;
  padding:3px 10px;
  border-radius:4px;
  line-height:1.5;
}
.news-date{
  font-size:13px;
  color:var(--text-muted);
}
.news-title{
  font-size:18px;
  font-weight:600;
  margin-bottom:8px;
  line-height:1.45;
}
.news-title a{
  color:var(--text);
  transition:color .2s ease;
}
.news-title a:hover{color:var(--primary);}
.news-desc{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
  margin-bottom:12px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-link{
  font-size:13px;
  color:var(--primary);
  font-weight:500;
  display:inline-flex;
  align-items:center;
}
.news-link::after{
  content:'→';
  margin-left:4px;
  transition:margin-left .2s ease;
}
.news-link:hover::after{margin-left:8px;}
/* 卖点区 */
.value-section{
  background:#EDF4F9;
}
.value-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.value-card{
  background:#fff;
  border-radius:var(--radius);
  padding:28px;
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.value-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
}
.value-icon{
  width:46px;
  height:46px;
  border-radius:8px;
  background:var(--primary-light);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:16px;
}
.value-icon svg{
  width:22px;
  height:22px;
  stroke:var(--primary);
  fill:none;
  stroke-width:1.5;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.value-card h3{
  font-size:18px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.value-card p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
  margin-bottom:0;
}
/* 适用场景 */
.scenario-wrap{
  display:flex;
  align-items:center;
  gap:52px;
}
.scenario-media{
  flex:1;
  border-radius:12px;
  overflow:hidden;
  box-shadow:var(--shadow);
  background:var(--primary-light);
}
.scenario-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  min-height:320px;
}
.scenario-list{
  flex:1;
}
.scenario-item{
  position:relative;
  padding:22px 0 22px 34px;
  border-bottom:1px solid var(--border);
}
.scenario-item:last-child{border-bottom:none;}
.scenario-item::before{
  content:'';
  position:absolute;
  left:0;
  top:26px;
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(195,78,90,.15);
}
.scenario-item h3{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  margin-bottom:6px;
}
.scenario-item p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
  margin-bottom:0;
}
/* 流程 */
.process-wrap{
  max-width:720px;
}
.process-item{
  display:flex;
  align-items:flex-start;
  gap:20px;
  padding:22px 0;
  border-bottom:1px solid var(--border);
}
.process-item:last-child{border-bottom:none;}
.process-num{
  flex:0 0 48px;
  width:48px;
  height:48px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  font-size:18px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  line-height:1;
}
.process-body h3{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  margin-bottom:6px;
}
.process-body p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
  margin-bottom:0;
}
/* FAQ */
.faq-section{
  background:#fff;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.faq-wrap{
  max-width:800px;
}
.accordion{
  background:transparent !important;
  margin-left:0;
  margin-right:0;
}
.accordion-item{
  background:transparent !important;
  border:none !important;
  border-bottom:1px solid var(--border) !important;
  position:relative;
}
.accordion-item:last-child{border-bottom:none !important;}
.accordion-title{
  padding:20px 40px 20px 20px !important;
  font-size:16px !important;
  font-weight:600 !important;
  color:var(--text) !important;
  background:transparent !important;
  border:none !important;
  line-height:1.5 !important;
  position:relative;
}
.accordion-title::after{
  content:'+';
  position:absolute;
  right:4px;
  top:50%;
  transform:translateY(-50%);
  font-size:22px;
  font-weight:400;
  color:var(--text-muted);
  transition:transform .2s ease,color .2s ease;
  line-height:1;
}
.accordion-item.is-active .accordion-title::after{
  content:'−';
  color:var(--primary);
}
.accordion-item.is-active .accordion-title{
  color:var(--primary) !important;
}
.accordion-item.is-active .accordion-title::before{
  content:'';
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:3px;
  height:22px;
  background:var(--accent);
  border-radius:2px;
}
.accordion-content{
  background:transparent !important;
  border:none !important;
  color:var(--text-secondary) !important;
  font-size:15px;
  line-height:1.7;
  padding:0 0 26px 20px !important;
}
/* CTA */
.cta-section{
  background:#EDF4F9;
  text-align:center;
  padding:80px 0;
}
.cta-title{
  font-size:28px;
  font-weight:700;
  color:var(--text);
  margin-bottom:14px;
  letter-spacing:-0.01em;
}
.cta-desc{
  font-size:15px;
  color:var(--text-secondary);
  max-width:520px;
  margin:0 auto 36px;
  line-height:1.7;
}
.cta-privacy{
  font-size:12px;
  color:var(--text-muted);
  margin-top:16px;
}
/* 页脚 */
.site-footer{
  background:#fff;
  border-top:1px solid var(--border);
  padding:60px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:48px;
  margin-bottom:40px;
}
.footer-brand{
  font-size:18px;
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
}
.footer-about{
  font-size:14px;
  color:var(--text-secondary);
  max-width:300px;
  line-height:1.7;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:14px;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:var(--text-secondary);
  margin-bottom:10px;
}
.footer-col a:hover{
  color:var(--primary);
}
.footer-contact{
  font-size:13px;
  color:var(--text-secondary);
  line-height:1.7;
}
.copyright{
  text-align:center;
  font-size:13px;
  color:var(--text-muted);
  border-top:1px solid var(--border);
  padding-top:20px;
  margin-bottom:0;
}
/* Reveal 弹层 */
.reveal{
  background:#fff;
  border-radius:12px;
  padding:28px;
  box-shadow:0 24px 60px rgba(20,50,80,.18);
  max-width:520px;
}
.reveal .close-button{
  color:var(--text-muted);
  font-size:24px;
  line-height:1;
  width:32px;
  height:32px;
  border-radius:50%;
  transition:background .2s,color .2s;
}
.reveal .close-button:hover{
  color:var(--accent);
  background:var(--primary-light);
}
.modal-title{
  font-size:20px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.modal-subtitle{
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:20px;
}
.contact-form label{
  display:block;
  font-size:13px;
  color:var(--text-secondary);
  margin-bottom:14px;
  font-weight:500;
}
.contact-form input,
.contact-form textarea{
  width:100%;
  border:1px solid var(--border);
  border-radius:6px;
  padding:10px 14px;
  font-size:14px;
  color:var(--text);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
  margin-top:4px;
}
.contact-form input:focus,
.contact-form textarea:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(46,110,158,.12);
  outline:none;
}
.contact-form textarea{
  min-height:80px;
  resize:vertical;
}
.contact-form .btn{
  width:100%;
  margin-top:6px;
}
.privacy-note{
  font-size:12px;
  color:var(--text-muted);
  text-align:center;
  margin-top:12px;
}
/* 响应式 */
@media (max-width:1023px){
  .section{padding:72px 0;}
  .menu-toggle{display:block;}
  .main-nav{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    background:#fff;
    border-bottom:1px solid var(--border);
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
    padding:16px 24px 20px;
    box-shadow:0 16px 28px rgba(20,50,80,.08);
  }
  .main-nav.nav-open{display:flex;}
  .main-nav a:not(.btn-nav){
    width:100%;
    padding:11px 0;
    font-size:16px;
  }
  .main-nav .btn-nav{
    margin-top:12px;
    width:100%;
    text-align:center;
  }
  .scenario-wrap{
    flex-direction:column;
    gap:36px;
  }
  .scenario-media img{
    min-height:240px;
  }
}
@media (max-width:840px){
  .news-thumb{
    flex-basis:220px;
  }
}
@media (max-width:640px){
  .section{padding:56px 0;}
  .category-hero-inner{padding:44px 0;}
  .category-hero h1{
    font-size:27px;
  }
  .category-hero p{
    font-size:14px;
  }
  .section-title{
    font-size:24px;
  }
  .news-item{
    flex-direction:column;
  }
  .news-thumb{
    flex:auto;
    min-height:auto;
  }
  .news-thumb img{
    height:190px;
  }
  .news-body{
    padding:20px;
  }
  .value-grid{
    grid-template-columns:1fr;
    gap:16px;
  }
  .value-card{
    padding:22px;
  }
  .scenario-item{
    padding-left:28px;
  }
  .process-item{
    gap:14px;
  }
  .process-num{
    flex:0 0 40px;
    width:40px;
    height:40px;
    font-size:16px;
  }
  .accordion-title{
    font-size:15px !important;
    padding:16px 30px 16px 16px !important;
  }
  .accordion-content{
    font-size:14px;
    padding-left:16px !important;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .cta-section{
    padding:56px 0;
  }
  .cta-title{
    font-size:24px;
  }
  .grid-container{
    padding-left:16px !important;
    padding-right:16px !important;
  }
}

/* roulang page: article */
:root {
      --color-primary: #2E6E9E;
      --color-primary-dark: #235C86;
      --color-primary-light: #E8F0F7;
      --color-accent: #C34E5A;
      --color-bg: #F7FAFC;
      --color-card: #FFFFFF;
      --color-text: #20303E;
      --color-text-light: #627B8C;
      --color-muted: #9AA7B4;
      --color-border: #E4EAF0;
      --radius-card: 10px;
      --radius-btn: 8px;
      --radius-tag: 4px;
      --shadow-card: 0 4px 20px rgba(20, 50, 80, 0.06);
      --shadow-hover: 0 10px 28px rgba(20, 50, 80, 0.10);
      --space-section: 96px;
      --font-family: "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html,
    body {
      margin: 0;
      padding: 0;
      background: var(--color-bg);
      color: var(--color-text);
      font-family: var(--font-family);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: var(--color-primary);
      text-decoration: none;
      transition: color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, transform 0.2s ease;
    }

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

    a:focus,
    button:focus,
    input:focus,
    select:focus,
    textarea:focus {
      outline: 2px solid rgba(46, 110, 158, 0.40);
      outline-offset: 2px;
    }

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

    .grid-container {
      max-width: 1200px;
    }

    /* Header & navigation */
    .site-header {
      background: #FFFFFF;
      border-bottom: 1px solid var(--color-border);
      position: sticky;
      top: 0;
      z-index: 60;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 0;
      gap: 16px;
    }

    .logo {
      font-size: 20px;
      font-weight: 700;
      color: var(--color-text);
      letter-spacing: -0.01em;
      line-height: 1.2;
      white-space: nowrap;
    }

    .logo:hover {
      color: var(--color-text);
    }

    .logo-domain {
      font-size: 12px;
      font-weight: 400;
      color: var(--color-text-light);
      margin-left: 4px;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 2px;
    }

    .main-nav a {
      position: relative;
      display: inline-block;
      padding: 8px 14px;
      font-size: 15px;
      color: var(--color-text-light);
      letter-spacing: 0.01em;
      border-radius: 6px;
    }

    .main-nav a:hover {
      color: var(--color-primary);
      background: rgba(232, 240, 247, 0.60);
    }

    .main-nav a.active {
      color: var(--color-primary);
      font-weight: 500;
    }

    .main-nav a.active::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: -2px;
      width: 20px;
      height: 2px;
      background: var(--color-accent);
      border-radius: 2px;
      transform: translateX(-50%);
    }

    .btn-nav {
      background: var(--color-primary);
      color: #FFFFFF !important;
      border-radius: var(--radius-btn);
      padding: 10px 22px !important;
      margin-left: 10px;
      box-shadow: 0 2px 8px rgba(46, 110, 158, 0.14);
    }

    .btn-nav:hover {
      background: var(--color-primary-dark);
      color: #FFFFFF !important;
      transform: translateY(-1px);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 0;
      padding: 8px;
      cursor: pointer;
      flex-direction: column;
      gap: 5px;
    }

    .menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--color-text);
      border-radius: 2px;
      transition: transform 0.2s ease, opacity 0.2s ease;
    }

    /* Article page hero with background */
    .article-page-hero {
      position: relative;
      background-size: cover;
      background-position: center;
      padding: 48px 0 32px;
      border-bottom: 1px solid var(--color-border);
    }

    .article-page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(255, 255, 255, 0.92);
    }

    .article-page-hero .grid-container {
      position: relative;
      z-index: 1;
    }

    .page-breadcrumb {
      font-size: 13px;
      color: var(--color-text-light);
      margin-bottom: 28px;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 6px;
    }

    .page-breadcrumb a {
      color: var(--color-text-light);
      transition: color 0.2s ease;
    }

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

    .page-breadcrumb .sep {
      color: #B8C4CE;
      margin: 0 4px;
    }

    .page-breadcrumb .current {
      color: var(--color-text);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 380px;
      display: inline-block;
      vertical-align: bottom;
    }

    .article-head {
      max-width: 900px;
    }

    .article-title {
      font-size: 36px;
      line-height: 1.3;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin: 0 0 18px;
      color: var(--color-text);
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px 20px;
      font-size: 14px;
      color: var(--color-text-light);
    }

    .meta-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .article-cat-tag {
      background: var(--color-primary-light);
      color: var(--color-primary);
      border-radius: var(--radius-tag);
      padding: 3px 12px;
      font-size: 13px;
      font-weight: 500;
    }

    .article-excerpt {
      font-size: 16px;
      color: var(--color-text-light);
      line-height: 1.8;
      max-width: 760px;
      margin: 24px 0 0;
      padding: 18px 0 0;
      border-top: 1px solid var(--color-border);
    }

    /* Article content */
    .article-content {
      padding: 32px 0 0;
    }

    .article-wrapper {
      max-width: 780px;
      margin: 0 auto;
      padding-bottom: 56px;
    }

    .article-body {
      font-size: 16.5px;
      line-height: 1.8;
      color: var(--color-text);
      padding: 24px 0 40px;
    }

    .article-body p {
      margin-bottom: 24px;
    }

    .article-body h2 {
      font-size: 26px;
      font-weight: 700;
      line-height: 1.35;
      margin: 48px 0 16px;
      color: var(--color-text);
    }

    .article-body h3 {
      font-size: 20px;
      font-weight: 600;
      line-height: 1.4;
      margin: 32px 0 12px;
      color: var(--color-text);
    }

    .article-body blockquote {
      margin: 24px 0;
      padding: 18px 22px;
      border-left: 3px solid var(--color-primary);
      background: #F4F8FB;
      color: var(--color-text);
      border-radius: 0 8px 8px 0;
    }

    .article-body img {
      border-radius: 12px;
      border: 1px solid var(--color-border);
      margin: 24px 0;
    }

    .article-body ul,
    .article-body ol {
      padding-left: 24px;
      margin-bottom: 24px;
    }

    .article-body li {
      margin-bottom: 8px;
    }

    .article-empty {
      padding: 80px 0;
      text-align: center;
    }

    .article-empty p {
      font-size: 20px;
      color: var(--color-text-light);
      margin-bottom: 24px;
    }

    /* Buttons */
    .btn-primary {
      display: inline-block;
      background: var(--color-primary);
      color: #FFFFFF;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 500;
      border: 1px solid transparent;
      cursor: pointer;
      transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-primary:hover {
      background: var(--color-primary-dark);
      color: #FFFFFF;
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(46, 110, 158, 0.18);
    }

    .btn-block {
      width: 100%;
      text-align: center;
    }

    /* Article pager */
    .article-pager {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 0;
      border-top: 1px solid var(--color-border);
      border-bottom: 1px solid var(--color-border);
      margin-top: 8px;
    }

    .pager-link {
      font-size: 15px;
      color: var(--color-primary);
      padding: 6px 0;
    }

    .pager-link:hover {
      color: var(--color-primary-dark);
    }

    /* Related reading */
    .related-section {
      padding: 64px 0 var(--space-section);
      background: var(--color-bg);
    }

    .section-title {
      font-size: 28px;
      font-weight: 700;
      letter-spacing: -0.01em;
      margin: 0 0 4px;
      color: var(--color-text);
    }

    .section-line {
      border-top: 1px solid var(--color-border);
      margin: 12px 0 32px;
    }

    .related-card-wrap {
      margin-bottom: 24px;
    }

    .related-card {
      display: block;
      background: var(--color-card);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      height: 100%;
      transition: box-shadow 0.25s ease, transform 0.25s ease;
      border: 1px solid rgba(228, 234, 240, 0.60);
    }

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

    .related-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-bottom: 1px solid var(--color-border);
    }

    .card-body {
      padding: 20px;
    }

    .card-cat {
      display: inline-block;
      background: var(--color-primary-light);
      color: var(--color-primary);
      font-size: 12px;
      padding: 3px 10px;
      border-radius: var(--radius-tag);
      font-weight: 500;
    }

    .card-title {
      font-size: 17px;
      font-weight: 600;
      line-height: 1.55;
      margin: 10px 0 8px;
      color: var(--color-text);
      transition: color 0.2s ease;
    }

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

    .card-date {
      font-size: 13px;
      color: var(--color-text-light);
    }

    /* Footer */
    .site-footer {
      background: #FFFFFF;
      border-top: 1px solid var(--color-border);
      padding: 56px 0 24px;
    }

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

    .footer-brand {
      font-size: 20px;
      font-weight: 700;
      color: var(--color-text);
      letter-spacing: -0.01em;
    }

    .footer-about {
      font-size: 14px;
      color: var(--color-text-light);
      max-width: 300px;
      margin: 10px 0 0;
      line-height: 1.7;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: var(--color-text);
      margin: 0 0 12px;
    }

    .footer-col a {
      display: block;
      font-size: 14px;
      color: var(--color-text-light);
      padding: 4px 0;
    }

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

    .footer-contact {
      font-size: 14px;
      color: var(--color-text-light);
      line-height: 1.7;
      margin: 0;
    }

    .copyright {
      text-align: center;
      color: var(--color-text-light);
      font-size: 13px;
      border-top: 1px solid var(--color-border);
      padding-top: 24px;
      margin-top: 24px;
    }

    /* Reveal modal */
    .reveal {
      border-radius: 12px;
      border: 0;
      box-shadow: 0 20px 50px rgba(20, 50, 80, 0.18);
      padding: 32px;
      background: #FFFFFF;
    }

    .modal-title {
      font-size: 20px;
      font-weight: 600;
      margin: 0 0 6px;
      color: var(--color-text);
    }

    .modal-sub {
      font-size: 14px;
      color: var(--color-text-light);
      margin: 0 0 24px;
    }

    .modal-form .form-field {
      margin-bottom: 16px;
    }

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

    .form-field input,
    .form-field select,
    .form-field textarea {
      width: 100%;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-btn);
      padding: 10px 14px;
      font-size: 15px;
      background: #FFFFFF;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .form-field input:focus,
    .form-field select:focus,
    .form-field textarea:focus {
      outline: none;
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px rgba(46, 110, 158, 0.12);
    }

    .privacy-note {
      font-size: 12px;
      color: var(--color-muted);
      text-align: center;
      margin: 12px 0 0;
      line-height: 1.6;
    }

    .reveal .close-button {
      font-size: 28px;
      color: var(--color-text-light);
      line-height: 1;
    }

    .reveal .close-button:hover {
      color: var(--color-primary);
    }

    .reveal-overlay {
      background: rgba(32, 48, 62, 0.55);
    }

    /* Responsive */
    @media (max-width: 900px) {
      :root {
        --space-section: 72px;
      }

      .header-inner {
        flex-wrap: wrap;
        padding: 16px 0;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .main-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        padding: 14px 0 6px;
        border-top: 1px solid var(--color-border);
        margin-top: 10px;
        gap: 0;
      }

      .main-nav.open {
        display: flex;
      }

      .main-nav a {
        width: 100%;
        padding: 12px 8px;
        border-radius: 6px;
      }

      .main-nav a.active::after {
        left: 8px;
        transform: none;
        width: 4px;
        height: 18px;
        border-radius: 4px;
        bottom: auto;
        top: 50%;
        margin-top: -9px;
      }

      .btn-nav {
        width: auto;
        margin-left: 0;
        margin-top: 6px;
        text-align: center;
      }

      .article-title {
        font-size: 30px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 640px) {
      :root {
        --space-section: 56px;
      }

      .article-page-hero {
        padding: 36px 0 24px;
      }

      .article-title {
        font-size: 26px;
      }

      .article-meta {
        gap: 10px 14px;
        font-size: 13px;
      }

      .article-body {
        font-size: 16px;
        padding: 16px 0 32px;
      }

      .article-body h2 {
        font-size: 23px;
        margin-top: 36px;
      }

      .article-body h3 {
        font-size: 19px;
        margin-top: 28px;
      }

      .article-pager {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
      }

      .related-section {
        padding: 48px 0 64px;
      }

      .section-title {
        font-size: 24px;
      }

      .related-card img {
        height: 200px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        margin-bottom: 24px;
      }

      .footer-about {
        max-width: 100%;
      }

      .reveal {
        padding: 24px;
        width: 92%;
        max-height: 90vh;
        overflow-y: auto;
      }

      .page-breadcrumb .current {
        max-width: 220px;
      }
    }

/* roulang page: category2 */
:root{
  --primary:#2E6E9E;
  --primary-dark:#235C86;
  --primary-light:#E8F0F7;
  --accent:#C34E5A;
  --bg:#F7FAFC;
  --card-bg:#FFFFFF;
  --line:#E4EAF0;
  --text:#20303E;
  --text-sub:#627B8C;
  --text-muted:#9AA7B4;
  --radius:10px;
  --radius-img:12px;
  --shadow:0 4px 20px rgba(20,50,80,0.06);
  --shadow-hover:0 10px 28px rgba(20,50,80,0.10);
  --transition:all 0.25s ease;
  --font-family:"PingFang SC","Source Han Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-family);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}

/* 顶部导航 */
.site-header{
  background:#fff;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:18px 0;
  position:sticky;
  top:0;
  z-index:100;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
}
.brand{display:flex;align-items:baseline;gap:8px}
.brand-name{font-size:20px;font-weight:700;color:var(--text);letter-spacing:-0.01em}
.brand-name span{color:var(--primary)}
.brand-domain{font-size:12px;color:var(--text-muted);font-weight:400;letter-spacing:0.02em}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav a{
  font-size:14px;
  font-weight:500;
  color:var(--text-sub);
  letter-spacing:0.02em;
  padding:6px 2px;
  position:relative;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--primary);
  transition:width 0.25s ease;
}
.main-nav a:hover{color:var(--primary)}
.main-nav a:hover::after{width:100%}
.main-nav a.active{color:var(--text)}
.main-nav a.active::after{width:100%;background:var(--accent)}
.main-nav .btn-nav{
  background:var(--primary);
  color:#fff;
  padding:10px 22px;
  border-radius:8px;
  font-weight:600;
  letter-spacing:0.01em;
  box-shadow:0 4px 12px rgba(46,110,158,0.18);
}
.main-nav .btn-nav::after{display:none}
.main-nav .btn-nav:hover{background:var(--primary-dark);transform:translateY(-1px);color:#fff}
.nav-toggle{
  display:none;
  background:none;
  border:0;
  width:40px;
  height:40px;
  cursor:pointer;
  position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";
  position:absolute;
  left:9px;
  width:22px;
  height:1.5px;
  background:var(--text);
  transition:var(--transition);
}
.nav-toggle span{top:19px}
.nav-toggle span::before{top:-7px}
.nav-toggle span::after{top:7px}

/* 分类页头 */
.page-banner{
  position:relative;
  background:url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  padding:96px 0 80px;
  overflow:hidden;
}
.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(255,255,255,0.88);
}
.page-banner .grid-container{position:relative;z-index:2}
.banner-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  background:var(--primary-light);
  border:1px solid #d4e2ee;
  padding:6px 14px;
  border-radius:20px;
  margin-bottom:20px;
  letter-spacing:0.04em;
}
.banner-tag i{font-size:12px}
.page-banner h1{
  font-size:42px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-0.02em;
  color:var(--text);
  max-width:720px;
  margin-bottom:18px;
}
.page-banner h1 em{color:var(--accent);font-style:normal}
.banner-desc{
  font-size:17px;
  line-height:1.8;
  color:var(--text-sub);
  max-width:660px;
  margin-bottom:28px;
}
.banner-mini{
  display:flex;
  gap:0;
  border-top:1px solid var(--line);
  padding-top:22px;
  max-width:660px;
}
.banner-mini-item{
  display:flex;
  align-items:center;
  gap:10px;
  padding-right:32px;
  flex:0 0 auto;
}
.banner-mini-item + .banner-mini-item{
  padding-left:32px;
  border-left:1px solid var(--line);
}
.banner-mini-item i{font-size:18px;color:var(--accent)}
.banner-mini-item strong{font-size:14px;color:var(--text);display:block;line-height:1.3}
.banner-mini-item span{font-size:12px;color:var(--text-muted);display:block}

/* 服务方向筛选 */
.topic-strip{
  padding:40px 0 20px;
}
.topic-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px 28px;
  box-shadow:var(--shadow);
}
.topic-title{font-size:14px;font-weight:600;color:var(--text);display:flex;align-items:center;gap:10px}
.topic-title i{color:var(--accent)}
.topic-tags{display:flex;flex-wrap:wrap;gap:10px}
.topic-tags span{
  font-size:13px;
  color:var(--text-sub);
  background:var(--primary-light);
  padding:6px 14px;
  border-radius:16px;
  white-space:nowrap;
  transition:var(--transition);
  cursor:default;
}
.topic-tags span i{color:var(--primary);font-size:11px;margin-right:5px}

/* 区块通用 */
.section{padding:80px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  flex-wrap:wrap;
  margin-bottom:40px;
}
.section-head h2{
  font-size:30px;
  font-weight:700;
  letter-spacing:-0.01em;
  line-height:1.35;
}
.section-head p{
  font-size:15px;
  color:var(--text-sub);
  max-width:520px;
  margin-top:8px;
}
.section-more{
  font-size:14px;
  font-weight:500;
  color:var(--primary);
  border-bottom:2px solid var(--primary-light);
  padding-bottom:2px;
}
.section-more i{font-size:12px;margin-left:6px}
.section-head .head-line{
  width:100%;
  height:1px;
  background:var(--line);
  margin-top:20px;
}

/* 服务网格卡片 */
.service-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.service-card{
  background:var(--card-bg);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:var(--transition);
  border:1px solid rgba(228,234,240,0.6);
  display:flex;
  flex-direction:column;
}
.service-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.service-card .card-media{
  position:relative;
  height:220px;
  overflow:hidden;
}
.service-card .card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 0.4s ease;
}
.service-card:hover .card-media img{transform:scale(1.04)}
.card-badge{
  position:absolute;
  top:16px;
  left:16px;
  background:rgba(255,255,255,0.94);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  padding:5px 12px;
  border-radius:16px;
  letter-spacing:0.03em;
  box-shadow:0 2px 8px rgba(20,50,80,0.08);
}
.card-body{
  padding:26px 28px 24px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.card-body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.4;
  margin-bottom:10px;
}
.card-body p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.75;
  flex:1;
}
.card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:20px;
  padding-top:16px;
  border-top:1px solid var(--line);
}
.card-meta .tag{
  font-size:12px;
  color:var(--primary);
  background:var(--primary-light);
  padding:3px 10px;
  border-radius:4px;
  font-weight:500;
}
.card-meta .time{
  font-size:12px;
  color:var(--text-muted);
}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:500;
  color:var(--primary);
  margin-top:16px;
}
.card-link i{font-size:12px;transition:transform 0.25s ease}
.card-link:hover{color:var(--primary-dark)}
.card-link:hover i{transform:translateX(4px)}

/* 流程步骤 */
.steps-section{
  background:var(--primary-light);
  padding:80px 0;
  position:relative;
}
.steps-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:8px;
}
.step-item{
  background:#fff;
  border-radius:var(--radius);
  padding:28px 24px;
  box-shadow:var(--shadow);
  position:relative;
  transition:var(--transition);
}
.step-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
}
.step-num{
  font-size:36px;
  font-weight:700;
  color:var(--accent);
  line-height:1;
  letter-spacing:-0.02em;
  margin-bottom:14px;
}
.step-item h3{
  font-size:17px;
  font-weight:600;
  margin-bottom:8px;
}
.step-item p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}
.step-line{
  position:absolute;
  top:40px;
  right:-24px;
  width:24px;
  height:1px;
  background:var(--line);
}
.step-item:last-child .step-line{display:none}

/* FAQ */
.faq-section{padding:80px 0}
.faq-wrap{
  max-width:860px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid var(--line);
  position:relative;
}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-title{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:22px 0;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  transition:var(--transition);
  gap:20px;
}
.faq-title:hover{color:var(--primary)}
.faq-icon{
  flex:0 0 24px;
  width:24px;
  height:24px;
  position:relative;
  display:inline-block;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--primary);
  transition:var(--transition);
}
.faq-icon::before{width:14px;height:1.5px;top:11px;left:5px}
.faq-icon::after{width:1.5px;height:14px;top:5px;left:11px}
.faq-item.is-active .faq-icon::after{transform:scaleY(0)}
.faq-item.is-active .faq-title{
  color:var(--primary);
  border-left:3px solid var(--accent);
  padding-left:14px;
}
.faq-answer{
  display:none;
  padding:0 0 22px 17px;
  font-size:15px;
  color:var(--text-sub);
  line-height:1.75;
  max-width:780px;
}
.faq-answer.open{display:block}

/* CTA 区块 */
.cta-section{
  padding:60px 0 90px;
}
.cta-box{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:48px 40px;
  text-align:center;
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.cta-box::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:var(--primary);
}
.cta-box h2{
  font-size:28px;
  font-weight:700;
  margin-bottom:12px;
}
.cta-box p{
  font-size:15px;
  color:var(--text-sub);
  max-width:520px;
  margin:0 auto 28px;
}
.btn-primary{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary);
  color:#fff;
  font-size:15px;
  font-weight:600;
  padding:13px 32px;
  border-radius:8px;
  border:1px solid var(--primary);
  cursor:pointer;
  transition:var(--transition);
  letter-spacing:0.02em;
}
.btn-primary:hover{
  background:var(--primary-dark);
  border-color:var(--primary-dark);
  transform:translateY(-1px);
  box-shadow:0 8px 20px rgba(46,110,158,0.2);
  color:#fff;
}
.btn-outline{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:#fff;
  color:var(--primary);
  font-size:15px;
  font-weight:600;
  padding:12px 28px;
  border-radius:8px;
  border:1px solid var(--primary);
  cursor:pointer;
  transition:var(--transition);
}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark)}
.cta-note{
  font-size:12px;
  color:var(--text-muted);
  margin-top:14px;
}

/* 页脚 */
.site-footer{
  background:#fff;
  border-top:1px solid var(--line);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 0.8fr 1fr;
  gap:48px;
  padding-bottom:40px;
}
.footer-brand{
  font-size:20px;
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
}
.footer-about{
  font-size:14px;
  color:var(--text-sub);
  max-width:360px;
  line-height:1.7;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:14px;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:var(--text-sub);
  padding:5px 0;
}
.footer-col a:hover{color:var(--primary)}
.footer-contact{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}
.copyright{
  text-align:center;
  font-size:13px;
  color:var(--text-muted);
  border-top:1px solid var(--line);
  padding:20px 0;
}

/* Reveal 弹层 */
.reveal-overlay{
  background:rgba(16,30,45,0.5);
  backdrop-filter:blur(2px);
}
#contactModal{
  background:#fff;
  border-radius:12px;
  border:1px solid var(--line);
  box-shadow:0 20px 60px rgba(16,30,45,0.25);
  padding:36px 32px 32px;
  max-width:520px;
  width:92%;
}
.modal-title{
  font-size:22px;
  font-weight:700;
  margin-bottom:8px;
}
.modal-sub{
  font-size:14px;
  color:var(--text-sub);
  margin-bottom:24px;
}
.modal-label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--text);
  margin-bottom:6px;
}
.modal-input{
  width:100%;
  border:1px solid var(--line);
  border-radius:6px;
  padding:11px 14px;
  font-size:15px;
  background:#FDFEFF;
  transition:border-color 0.2s ease,box-shadow 0.2s ease;
  margin-bottom:18px;
  color:var(--text);
}
.modal-input:focus{
  border-color:var(--primary);
  border-width:1.5px;
  outline:none;
  box-shadow:0 0 0 3px rgba(46,110,158,0.10);
}
textarea.modal-input{min-height:90px;resize:vertical}
.btn-submit{
  width:100%;
  background:var(--primary);
  color:#fff;
  border:1px solid var(--primary);
  padding:13px 20px;
  border-radius:8px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:var(--transition);
  margin-top:4px;
}
.btn-submit:hover{background:var(--primary-dark)}
.modal-privacy{
  font-size:12px;
  color:var(--text-muted);
  text-align:center;
  margin-top:14px;
}
.reveal-close{
  position:absolute;
  top:16px;
  right:18px;
  font-size:20px;
  color:var(--text-muted);
  cursor:pointer;
  background:none;
  border:0;
  transition:var(--transition);
}
.reveal-close:hover{color:var(--accent);transform:rotate(90deg)}

/* 响应式 */
@media (max-width:1024px){
  .main-nav{gap:20px}
  .page-banner h1{font-size:36px}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .step-line{display:none}
  .footer-grid{gap:32px}
}
@media (max-width:768px){
  .nav-toggle{display:block}
  .main-nav{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 16px 30px rgba(20,50,80,0.08);
    flex-direction:column;
    align-items:flex-start;
    padding:20px 24px;
    gap:14px;
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 0;width:100%;font-size:16px}
  .main-nav .btn-nav{width:100%;text-align:center}
  .main-nav .btn-nav::after{display:none}
  .page-banner{padding:64px 0 52px}
  .page-banner h1{font-size:30px}
  .banner-desc{font-size:15px}
  .banner-mini{flex-wrap:wrap;gap:14px 0}
  .banner-mini-item{padding-right:20px}
  .banner-mini-item + .banner-mini-item{padding-left:20px}
  .section{padding:56px 0}
  .section-head h2{font-size:24px}
  .service-grid{grid-template-columns:1fr;gap:20px}
  .steps-grid{grid-template-columns:1fr;gap:16px}
  .cta-box{padding:40px 24px}
  .cta-box h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:520px){
  .grid-container{padding-left:16px;padding-right:16px}
  .brand-name{font-size:18px}
  .brand-domain{display:none}
  .page-banner h1{font-size:26px}
  .banner-tag{font-size:12px}
  .banner-mini{flex-direction:column;gap:10px}
  .banner-mini-item{padding:0;border-left:0!important}
  .topic-wrap{padding:16px}
  .card-media{height:180px}
  .card-body{padding:20px}
  .card-body h3{font-size:17px}
  .steps-grid{grid-template-columns:1fr}
  .cta-box{padding:36px 18px}
  .btn-primary{width:100%;justify-content:center}
  .footer-grid{gap:24px}
}