/* roulang page: index */
:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #EFF6FF;
  --secondary: #F59E0B;
  --ink: #0F172A;
  --body: #334155;
  --muted: #64748B;
  --faint: #94A3B8;
  --line: #E2E8F0;
  --surface: #F8FAFC;
  --surface-alt: #F1F5F9;
  --footer: #0F172A;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-badge: 6px;
  --radius-img: 12px;
  --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
  --shadow-card-hover: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-btn: 0 2px 8px rgba(37, 99, 235, 0.3);
  --space-section: 96px;
  --space-section-mobile: 64px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--surface);
  color: var(--body);
  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);
}
input, button {
  font-family: inherit;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  box-shadow: var(--shadow-btn);
  border: 1px solid transparent;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.3);
  outline-offset: 2px;
}
.btn-primary.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}
.btn-primary.btn-lg {
  height: 52px;
  padding: 0 36px;
  font-size: 16px;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  background: #fff;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 1px solid var(--primary);
  transition: background .2s ease, transform .2s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-1px);
}
.btn-outline:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.25);
  outline-offset: 2px;
}
.btn-outline.btn-lg {
  height: 52px;
  padding: 0 36px;
  font-size: 16px;
}
.btn-block {
  display: flex;
  width: 100%;
  max-width: 420px;
  height: 56px;
  margin: 0 auto;
  font-size: 16px;
  border-radius: 12px;
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 4px rgba(15,23,42,0.06);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 34px;
  height: 34px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}
.logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  border-radius: 8px;
  position: relative;
  transition: color .2s ease;
}
.nav-link:hover {
  color: var(--primary);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}
.search-box {
  display: flex;
  align-items: center;
  width: 220px;
  height: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 14px;
  gap: 8px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.search-box svg {
  width: 16px;
  height: 16px;
  stroke: var(--faint);
  flex-shrink: 0;
}
.search-box input {
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  font-size: 13px;
  color: var(--ink);
}
.search-box input::placeholder {
  color: var(--faint);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.mobile-toggle span {
  width: 20px;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  transition: transform .25s ease, opacity .25s ease;
}
.mobile-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-menu {
  display: none;
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 16px 24px 24px;
  box-shadow: 0 12px 24px rgba(15,23,42,.08);
}
.mobile-menu.open {
  display: block;
  animation: fadeInDown .2s ease;
}
.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}
.mobile-menu .nav-link {
  padding: 12px 8px;
  font-size: 15px;
  border-radius: 8px;
}
.mobile-menu .nav-link.active {
  background: var(--primary-light);
}
.mobile-search {
  margin-bottom: 16px;
  width: 100%;
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 倒计时条 ===== */
.countdown-bar {
  background: #1E3A8A;
  color: #fff;
  padding: 16px 0;
}
.countdown-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.countdown-label {
  font-size: 15px;
  font-weight: 500;
  color: #DBEAFE;
}
.countdown-timer {
  display: flex;
  align-items: center;
  gap: 12px;
}
.cd-block {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,.12);
  border-radius: 10px;
  padding: 8px 12px;
}
.cd-num {
  font-family: Inter, "Helvetica Neue", sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  background: #fff;
  border-radius: 8px;
  width: 48px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.cd-unit {
  font-size: 13px;
  letter-spacing: 1px;
  color: #BFDBFE;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding-top: 64px;
  padding-bottom: 72px;
}
.hero-content {
  padding-right: 8px;
}
.hero-content h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 24px;
}
.hero-subtitle {
  font-size: 16px;
  color: var(--body);
  margin-bottom: 32px;
  max-width: 420px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-visual {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--surface-alt);
}
.hero-visual img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

/* ===== Section ===== */
.section {
  padding: var(--space-section) 0;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 40px;
}

/* ===== 活动卖点 2×2 ===== */
.features-section {
  background: #fff;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.feature-item {
  display: flex;
  gap: 28px;
  padding: 42px 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background .3s ease;
}
.feature-item:hover {
  background: var(--surface);
}
.feature-num {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  color: #CBD5E1;
  flex-shrink: 0;
  min-width: 60px;
}
.feature-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}
.feature-body p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.7;
}

/* ===== 新闻列表 ===== */
.latest-section {
  background: var(--surface);
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-card {
  display: flex;
  gap: 24px;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 16px;
  box-shadow: var(--shadow-card);
  border: 1px solid transparent;
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}
.news-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: var(--line);
}
.news-thumb {
  width: 160px;
  height: 96px;
  flex-shrink: 0;
  border-radius: var(--radius-img);
  overflow: hidden;
  background: var(--surface-alt);
  display: block;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .25s ease;
}
.news-card:hover .news-thumb img {
  transform: scale(1.02);
}
.news-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-badge);
}
.news-date {
  font-size: 13px;
  color: var(--faint);
}
.news-info h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  margin-bottom: 6px;
}
.news-info h3 a {
  color: var(--ink);
  transition: color .2s ease;
}
.news-info h3 a:hover {
  color: var(--primary);
}
.news-info > p {
  font-size: 14px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.empty-state {
  background: var(--surface-alt);
  border-radius: var(--radius-card);
  padding: 48px;
  text-align: center;
  color: var(--muted);
  font-size: 15px;
}

/* ===== 亮点图墙 ===== */
.gallery-section {
  background: #fff;
}
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.gallery-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--surface-alt);
  margin: 0;
}
.gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform .4s ease;
}
.gallery-item:hover img {
  transform: scale(1.02);
}
.gallery-main img {
  height: 100%;
  min-height: 464px;
}
.date-badge {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(245, 158, 11, .92);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  letter-spacing: .03em;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--surface);
}
.cta-box {
  position: relative;
  background: #F1F5F9;
  border-radius: var(--radius-card);
  padding: 64px 32px;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--secondary);
  border-radius: 0 0 4px 4px;
}
.cta-box h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 32px;
}

/* ===== FAQ ===== */
.faq-section {
  background: #fff;
}
.faq-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 48px;
}
.status-card {
  background: #FEF3C7;
  border-radius: var(--radius-card);
  padding: 32px 28px;
  position: sticky;
  top: 96px;
}
.status-badge {
  display: inline-block;
  background: var(--secondary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-badge);
  margin-bottom: 20px;
}
.status-date {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
}
.status-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}
.faq-list h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq-item:hover {
  border-color: #CBD5E1;
}
.faq-item[open] {
  box-shadow: var(--shadow-card);
}
.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  user-select: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary .q-mark {
  width: 24px;
  height: 24px;
  background: var(--primary);
  color: #fff;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}
.faq-item summary::after {
  content: '+';
  margin-left: auto;
  font-size: 24px;
  font-weight: 400;
  color: var(--primary);
  transition: transform .3s ease;
  line-height: 1;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 24px 20px 62px;
  font-size: 14px;
  color: #475569;
  line-height: 1.7;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--footer);
  color: #94A3B8;
}
.footer-main {
  padding: 64px 0 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
}
.footer-brand .logo-text {
  color: #fff;
  font-size: 18px;
}
.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  max-width: 320px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-col a {
  color: #94A3B8;
  font-size: 14px;
  transition: color .2s ease;
}
.footer-col a:hover {
  color: #fff;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
}
.footer-contact span {
  color: #E2E8F0;
}
.footer-middle {
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,.1);
  border-bottom: 1px solid rgba(255,255,255,.1);
  display: flex;
  justify-content: center;
  gap: 16px;
}
.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: #94A3B8;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .2s ease, color .2s ease;
}
.social-icon:hover {
  background: rgba(255,255,255,.2);
  color: #fff;
}
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #64748B;
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }
  .header-actions {
    display: none;
  }
  .mobile-toggle {
    display: inline-flex;
  }
  .faq-layout {
    grid-template-columns: 1fr;
  }
  .status-card {
    position: static;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    padding-top: 48px;
    padding-bottom: 56px;
  }
  .hero-content {
    padding-right: 0;
  }
  .hero-visual img {
    height: 320px;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .gallery-main img {
    min-height: 320px;
  }
}
@media (max-width: 767px) {
  .section {
    padding: var(--space-section-mobile) 0;
  }
  .section-title {
    font-size: 24px;
    margin-bottom: 28px;
  }
  .hero-content h1 {
    font-size: 32px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn-primary,
  .hero-actions .btn-outline {
    width: 100%;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .feature-item {
    padding: 28px 20px;
  }
  .feature-num {
    font-size: 44px;
    min-width: 48px;
  }
  .news-card {
    flex-direction: column;
    gap: 16px;
  }
  .news-thumb {
    width: 100%;
    height: 140px;
  }
  .cta-box {
    padding: 48px 20px;
  }
  .cta-box h2 {
    font-size: 24px;
  }
  .countdown-inner {
    justify-content: center;
    text-align: center;
  }
  .countdown-timer {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }
  .cd-block {
    flex-direction: column;
    gap: 4px;
    padding: 6px 8px;
  }
  .cd-num {
    font-size: 22px;
    width: 40px;
    height: 36px;
  }
  .cd-unit {
    font-size: 12px;
  }
  .faq-item summary {
    padding: 16px;
    font-size: 14px;
  }
  .faq-answer {
    padding: 0 16px 16px 54px;
  }
  .footer-main {
    padding-top: 48px;
  }
  .container {
    padding: 0 16px;
  }
}

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --secondary: #F59E0B;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --alt-bg: #F1F5F9;
            --footer-bg: #0F172A;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --text-placeholder: #94A3B8;
            --border: #E2E8F0;
            --border-hover: #CBD5E1;
            --success: #10B981;
            --radius: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
            --shadow-hover: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-btn: 0 2px 8px rgba(37, 99, 235, 0.3);
            --space: 96px;
            --space-mobile: 64px;
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: Inter, "Helvetica Neue", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        .section {
            padding-top: var(--space);
            padding-bottom: var(--space);
        }

        @media (max-width: 767px) {
            .section {
                padding-top: var(--space-mobile);
                padding-bottom: var(--space-mobile);
            }
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-head .overline {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--secondary);
            background: rgba(245, 158, 11, 0.12);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        @media (max-width: 767px) {
            .section-head h2 {
                font-size: 24px;
            }
        }

        .section-head p {
            margin-top: 12px;
            color: var(--text-muted);
            font-size: 16px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            height: 48px;
            padding: 0 28px;
            cursor: pointer;
            transition: all 0.2s ease;
            line-height: 1.2;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
        }

        .btn-primary:focus-visible {
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
        }

        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-secondary:hover {
            background: #EFF6FF;
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .btn-secondary:focus-visible {
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
        }

        .btn-sm {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn-lg {
            height: 56px;
            padding: 0 40px;
            font-size: 16px;
            border-radius: 12px;
            width: 100%;
            max-width: 360px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 6px;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
        }

        .badge-secondary {
            background: rgba(245, 158, 11, 0.14);
            color: #B45309;
        }

        /* ===== Header ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(15, 23, 42, 0.06);
            position: relative;
            z-index: 50;
        }

        .header-inner {
            display: flex;
            align-items: center;
            height: 76px;
            gap: 32px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            font-family: var(--font-num);
            letter-spacing: 0;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        .main-nav .nav-link {
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            position: relative;
            transition: color 0.2s ease;
        }

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

        .main-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: 8px;
        }

        .search-box {
            position: relative;
            width: 220px;
        }

        .search-box .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            width: 16px;
            height: 16px;
            color: var(--text-placeholder);
            pointer-events: none;
        }

        .search-box input {
            width: 100%;
            height: 40px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: var(--bg);
            padding: 0 16px 0 40px;
            font-size: 14px;
            color: var(--text-heading);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .search-box input::placeholder {
            color: var(--text-placeholder);
        }

        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
            background: #fff;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            border: 1px solid var(--border);
            background: #fff;
        }

        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-heading);
            border-radius: 2px;
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

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

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

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

        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 20px 16px 28px;
            box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
        }

        .mobile-menu.open {
            display: block;
            animation: fadeInDrop 0.2s ease;
        }

        @keyframes fadeInDrop {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .mobile-menu .m-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 20px;
        }

        .mobile-menu .m-nav a {
            padding: 12px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-heading);
            border-radius: 10px;
        }

        .mobile-menu .m-nav a:hover {
            background: var(--bg);
            color: var(--primary);
        }

        .mobile-menu .m-nav a.active {
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-menu .m-search {
            margin-bottom: 16px;
        }

        .mobile-menu .m-search input {
            width: 100%;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--bg);
            padding: 0 16px;
            font-size: 14px;
        }

        .mobile-menu .m-search input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
            background: #fff;
        }

        .mobile-menu .btn {
            width: 100%;
        }

        @media (max-width: 1023px) {
            .header-inner {
                gap: 16px;
            }

            .main-nav .nav-link {
                padding: 10px 12px;
                font-size: 14px;
            }

            .search-box {
                width: 160px;
            }
        }

        @media (max-width: 767px) {
            .header-inner {
                height: 64px;
                gap: 12px;
            }

            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 17px;
            }

            .main-nav,
            .header-actions {
                display: none;
            }

            .nav-toggle {
                display: flex;
                margin-left: auto;
            }
        }

        /* ===== 分类页 Hero ===== */
        .category-hero {
            background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
            padding: 72px 0 64px;
            border-bottom: 1px solid var(--border);
        }

        @media (max-width: 767px) {
            .category-hero {
                padding: 48px 0 40px;
            }
        }

        .category-hero .badge-route {
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            font-size: 13px;
            padding: 6px 14px;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .category-hero h1 span {
            color: var(--primary);
        }

        .category-hero .hero-subtitle {
            font-size: 17px;
            color: var(--text-body);
            max-width: 620px;
            line-height: 1.6;
        }

        @media (max-width: 767px) {
            .category-hero h1 {
                font-size: 32px;
            }

            .category-hero .hero-subtitle {
                font-size: 15px;
            }
        }

        /* ===== 平台概览正文区 ===== */
        .overview-layout {
            display: grid;
            grid-template-columns: 6fr 4fr;
            gap: 56px;
            align-items: start;
        }

        @media (max-width: 767px) {
            .overview-layout {
                grid-template-columns: 1fr;
                gap: 48px;
            }
        }

        .content-list {
            display: flex;
            flex-direction: column;
            gap: 48px;
        }

        .topic-item {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 28px;
            border: 1px solid var(--border);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }

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

        .topic-item .thumb {
            width: 100%;
            height: 220px;
            border-radius: 12px;
            background: var(--alt-bg);
            overflow: hidden;
        }

        .topic-item .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

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

        .topic-item p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 0;
        }

        @media (max-width: 767px) {
            .topic-item {
                padding: 20px;
            }

            .topic-item .thumb {
                height: 180px;
            }
        }

        /* ===== 侧边栏 ===== */
        .sidebar {
            position: sticky;
            top: 24px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
        }

        .sidebar-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .sidebar-card ul {
            list-style: none;
        }

        .sidebar-card ul li {
            border-bottom: 1px solid var(--border);
        }

        .sidebar-card ul li:last-child {
            border-bottom: none;
        }

        .sidebar-card ul a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            font-size: 15px;
            color: var(--text-body);
            font-weight: 500;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .sidebar-card ul a::after {
            content: "›";
            font-size: 18px;
            color: var(--text-placeholder);
            transition: color 0.2s ease, transform 0.2s ease;
        }

        .sidebar-card ul a:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        .sidebar-card ul a:hover::after {
            color: var(--primary);
            transform: translateX(3px);
        }

        .sidebar-cta {
            background: #EFF6FF;
            border: 1px solid rgba(37, 99, 235, 0.16);
            border-radius: var(--radius);
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }

        .sidebar-cta .cta-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(37, 99, 235, 0.08);
            padding: 4px 10px;
            border-radius: 999px;
        }

        .sidebar-cta p {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.5;
            margin: 0;
        }

        .sidebar-cta .btn {
            width: 100%;
            margin-top: 4px;
        }

        @media (max-width: 767px) {
            .sidebar {
                position: static;
            }
        }

        /* ===== 数据条 ===== */
        .stats-section {
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding-top: 72px;
            padding-bottom: 72px;
        }

        @media (max-width: 767px) {
            .stats-section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-item .stat-num {
            font-family: var(--font-num);
            font-size: 44px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            letter-spacing: -0.02em;
        }

        .stat-item .stat-label {
            margin-top: 10px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        @media (max-width: 767px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px 24px;
            }

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

        /* ===== 服务保障 ===== */
        .assure-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        @media (max-width: 1023px) {
            .assure-list {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            .assure-list {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .assure-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            display: flex;
            gap: 20px;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }

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

        .assure-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .assure-icon svg {
            width: 22px;
            height: 22px;
        }

        .assure-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

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

        @media (max-width: 767px) {
            .assure-item {
                padding: 24px 20px;
            }
        }

        /* ===== 常用服务保障 ===== */
        .service-quote {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .service-quote::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--secondary);
        }

        .service-quote blockquote {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.6;
            max-width: 680px;
            margin: 0 auto 24px;
            letter-spacing: -0.01em;
        }

        .service-quote .quote-author {
            font-size: 14px;
            color: var(--text-muted);
        }

        @media (max-width: 767px) {
            .service-quote {
                padding: 32px 20px;
            }

            .service-quote blockquote {
                font-size: 18px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 24px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

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

        .faq-q {
            display: flex;
            align-items: center;
            gap: 16px;
            cursor: pointer;
        }

        .faq-q .q-mark {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-family: var(--font-num);
        }

        .faq-q h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            flex: 1;
            line-height: 1.4;
            margin: 0;
        }

        .faq-q .faq-icon {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
        }

        .faq-q .faq-icon::before,
        .faq-q .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--text-muted);
            border-radius: 2px;
            transition: transform 0.3s ease, background 0.2s ease;
        }

        .faq-q .faq-icon::before {
            width: 14px;
            height: 2px;
            top: 9px;
            left: 3px;
        }

        .faq-q .faq-icon::after {
            width: 2px;
            height: 14px;
            top: 3px;
            left: 9px;
        }

        .faq-item.active .faq-icon::before {
            transform: rotate(180deg);
            background: var(--primary);
        }

        .faq-item.active .faq-icon::after {
            transform: rotate(90deg);
            opacity: 0;
        }

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

        .faq-a p {
            padding-top: 16px;
            font-size: 14px;
            color: #475569;
            line-height: 1.7;
            margin: 0;
            border-top: 1px solid var(--border);
        }

        @media (max-width: 767px) {
            .faq-item {
                padding: 16px;
            }

            .faq-q {
                gap: 12px;
            }

            .faq-q h3 {
                font-size: 15px;
            }
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--card-bg);
            border-radius: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 72px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--secondary);
        }

        .cta-block h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .cta-block p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 40px;
            line-height: 1.6;
        }

        @media (max-width: 767px) {
            .cta-block {
                padding: 48px 20px;
            }

            .cta-block h2 {
                font-size: 24px;
            }

            .cta-block p {
                font-size: 14px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            color: #CBD5E1;
            padding-top: 64px;
            margin-top: var(--space);
        }

        @media (max-width: 767px) {
            .site-footer {
                margin-top: var(--space-mobile);
            }
        }

        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1.4fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
        }

        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col ul a {
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.2s ease;
        }

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

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.6;
        }

        .footer-middle {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            display: flex;
            justify-content: center;
            gap: 16px;
        }

        .social-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #CBD5E1;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .social-icon:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: #64748B;
            margin: 0;
        }

        @media (max-width: 1023px) {
            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 767px) {
            .footer-main {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

/* roulang page: article */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --secondary: #F59E0B;
  --bg: #F8FAFC;
  --card-bg: #FFFFFF;
  --alt-bg: #F1F5F9;
  --footer-bg: #0F172A;
  --title: #0F172A;
  --text: #334155;
  --muted: #64748B;
  --placeholder: #94A3B8;
  --border: #E2E8F0;
  --border-hover: #CBD5E1;
  --success: #10B981;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 3px rgba(15,23,42,0.06), 0 4px 12px rgba(15,23,42,0.04);
  --shadow-hover: 0 8px 24px rgba(15,23,42,0.08);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: Inter, "Helvetica Neue", sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
}
button,
input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #FFFFFF;
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 20px;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}
.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--title);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 999px;
  transition: color 0.2s, background 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--primary);
  background: #EFF6FF;
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
  background: #EFF6FF;
  box-shadow: inset 0 -2px 0 var(--primary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.search-wrap {
  display: flex;
  align-items: center;
  width: 220px;
  height: 40px;
  background: var(--alt-bg);
  border-radius: 999px;
  padding: 0 14px;
  gap: 8px;
  border: 1px solid transparent;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.search-wrap:focus-within {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.search-wrap svg {
  width: 16px;
  height: 16px;
  color: var(--placeholder);
  flex-shrink: 0;
}
.search-wrap input {
  flex: 1;
  background: transparent;
  font-size: 14px;
  color: var(--text);
  min-width: 0;
}
.search-wrap input::placeholder {
  color: var(--placeholder);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  border: 1px solid transparent;
  font-family: var(--font);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  height: 48px;
  padding: 0 28px;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}
.btn-secondary {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
  height: 48px;
  padding: 0 28px;
}
.btn-secondary:hover {
  background: #EFF6FF;
}
.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
  box-shadow: none;
}
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--alt-bg);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--title);
  transition: background 0.2s;
}
.menu-toggle:hover {
  background: #E2E8F0;
}
.nav-mobile-actions {
  display: none;
}
.breadcrumb-bar {
  background: var(--alt-bg);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--muted);
}
.breadcrumb-list a {
  color: var(--muted);
  transition: color 0.2s;
}
.breadcrumb-list a:hover {
  color: var(--primary);
}
.breadcrumb-list .sep {
  width: 1px;
  height: 14px;
  background: #CBD5E1;
  margin: 0 14px;
  display: inline-block;
}
.breadcrumb-list .current {
  color: var(--title);
  font-weight: 500;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-hero {
  background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
  padding: 60px 0 48px;
  border-bottom: 1px solid var(--border);
}
.article-hero-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.article-hero h1 {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--title);
  letter-spacing: -0.02em;
}
.article-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 28px;
  margin-top: 24px;
  font-size: 14px;
  color: var(--muted);
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-divider {
  width: 64px;
  height: 1px;
  background: #CBD5E1;
  margin: 28px auto 0;
}
.article-body {
  padding: 64px 0 32px;
  background: #fff;
}
.article-content {
  max-width: 760px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}
.article-content h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--title);
  margin: 48px 0 20px;
  letter-spacing: -0.02em;
  line-height: 1.4;
}
.article-content h3 {
  font-size: 21px;
  font-weight: 600;
  color: var(--title);
  margin: 36px 0 16px;
  line-height: 1.5;
}
.article-content p {
  margin: 0 0 24px;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-content a:hover {
  color: var(--primary-hover);
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: #EFF6FF;
  padding: 18px 24px;
  border-radius: 0 12px 12px 0;
  margin: 28px 0;
  color: #475569;
  font-size: 15px;
}
.article-content img {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 28px 0;
  height: auto;
}
.article-content ul,
.article-content ol {
  margin: 0 0 24px;
  padding-left: 24px;
}
.article-content li {
  margin-bottom: 10px;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  border-radius: 12px;
  overflow: hidden;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-content th {
  background: var(--alt-bg);
  font-weight: 600;
}
.article-content pre {
  background: var(--alt-bg);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin: 28px 0;
  font-size: 14px;
  line-height: 1.6;
}
.article-content code {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 14px;
  background: #EEF2F7;
  padding: 2px 6px;
  border-radius: 4px;
}
.not-found {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  padding: 64px 0;
}
.not-found h2 {
  font-size: 28px;
  color: var(--title);
  margin-bottom: 12px;
}
.not-found p {
  color: var(--muted);
  margin-bottom: 28px;
}
.article-tools {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 0;
  border-top: 1px solid var(--border);
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: var(--alt-bg);
  color: var(--muted);
  font-size: 13px;
  border-radius: 999px;
  text-decoration: none;
  transition: all 0.2s;
  font-weight: 500;
}
.tag:hover {
  background: #E0E7FF;
  color: var(--primary);
}
.share-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.share-label {
  font-size: 14px;
  color: var(--muted);
  margin-right: 4px;
}
.share-btn {
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s;
}
.share-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: #EFF6FF;
}
.related-section {
  background: var(--bg);
  padding: 72px 0;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--title);
  letter-spacing: -0.02em;
  margin-bottom: 36px;
  line-height: 1.3;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  text-decoration: none;
  display: block;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}
.related-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-hover);
}
.related-thumb {
  width: 100%;
  height: 160px;
  overflow: hidden;
  background: var(--alt-bg);
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.25s;
}
.related-card:hover .related-thumb img {
  transform: scale(1.02);
}
.related-info {
  padding: 20px 24px 24px;
}
.related-info h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--title);
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 54px;
}
.related-date {
  font-size: 13px;
  color: var(--placeholder);
}
.return-cta {
  padding: 48px 0 72px;
  text-align: center;
  background: var(--bg);
}
.site-footer {
  background: var(--footer-bg);
  padding: 64px 0 32px;
  color: #94A3B8;
}
.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo-text {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-text::before {
  content: "H";
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: #94A3B8;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 12px;
}
.footer-col ul a {
  color: #94A3B8;
  font-size: 14px;
  transition: color 0.2s;
}
.footer-col ul a:hover {
  color: #fff;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
  color: #94A3B8;
}
.footer-middle {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  justify-content: center;
  gap: 16px;
}
.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #94A3B8;
  transition: background 0.2s, color 0.2s;
}
.social-icon:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: #64748B;
}
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (max-width: 1024px) {
  .header-inner {
    gap: 16px;
  }
  .search-wrap {
    width: 180px;
  }
  .nav-link {
    padding: 10px 14px;
    font-size: 14px;
  }
}
@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .header-inner {
    height: 60px;
  }
  .brand-name {
    font-size: 18px;
  }
  .brand-icon {
    width: 36px;
    height: 36px;
    font-size: 17px;
  }
  .header-actions {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px 24px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
    display: none;
    gap: 6px;
  }
  .main-nav.open {
    display: flex;
    animation: fadeInDown 0.2s ease;
  }
  .main-nav .nav-link {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 15px;
  }
  .nav-mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
  }
  .nav-mobile-actions .search-wrap {
    width: 100%;
  }
  .nav-mobile-actions .btn {
    width: 100%;
  }
  .article-hero {
    padding: 44px 0 36px;
  }
  .article-hero h1 {
    font-size: 30px;
  }
  .article-meta {
    gap: 8px 18px;
    font-size: 13px;
  }
  .article-body {
    padding: 40px 0 24px;
  }
  .article-content h2 {
    font-size: 23px;
  }
  .article-content h3 {
    font-size: 19px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .return-cta {
    padding: 40px 0 56px;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-bottom: 32px;
  }
  .footer-middle {
    flex-wrap: wrap;
  }
  .breadcrumb-list .current {
    max-width: 200px;
  }
}
@media (max-width: 520px) {
  .article-hero h1 {
    font-size: 26px;
  }
  .article-content {
    font-size: 15px;
  }
  .article-content blockquote {
    padding: 14px 18px;
  }
}

/* roulang page: category2 */
:root {
            --primary: #2563EB;
            --primary-hover: #1D4ED8;
            --secondary: #F59E0B;
            --page-bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --alt-bg: #F1F5F9;
            --footer-bg: #0F172A;
            --heading: #0F172A;
            --body-text: #334155;
            --muted-text: #64748B;
            --placeholder: #94A3B8;
            --border: #E2E8F0;
            --border-hover: #CBD5E1;
            --success: #10B981;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-badge: 6px;
            --radius-img: 12px;
            --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
            --shadow-hover: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-btn: 0 2px 8px rgba(37, 99, 235, 0.3);
            --section-gap: 96px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--page-bg);
            color: var(--body-text);
            font-size: 16px;
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--heading);
            margin: 0;
            letter-spacing: -0.02em;
        }
        p {
            margin: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* ============ Header / Nav ============ */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(15, 23, 42, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--heading);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0 18px;
            height: 72px;
            font-size: 15px;
            font-weight: 500;
            color: #334155;
            border-bottom: 2px solid transparent;
            transition: color 0.2s ease, border-color 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-box svg {
            position: absolute;
            left: 14px;
            width: 16px;
            height: 16px;
            color: var(--muted-text);
            pointer-events: none;
        }
        .search-box input {
            width: 220px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 0 18px 0 40px;
            font-size: 14px;
            color: var(--heading);
            background: var(--page-bg);
            outline: none;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .search-box input::placeholder {
            color: var(--placeholder);
        }
        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
            background: #fff;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all 0.2s ease;
            line-height: 1.2;
            font-size: 15px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            height: 48px;
            padding: 0 28px;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
        }
        .btn-sm {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
        }
        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
            height: 48px;
            padding: 0 28px;
        }
        .btn-secondary:hover {
            background: #EFF6FF;
            color: var(--primary-hover);
            border-color: var(--primary-hover);
        }
        .btn-light {
            background: rgba(255, 255, 255, 0.12);
            color: #F8FAFC;
            border: 1px solid rgba(255, 255, 255, 0.35);
            height: 48px;
            padding: 0 28px;
        }
        .btn-light:hover {
            background: rgba(255, 255, 255, 0.22);
            color: #fff;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            border-radius: 8px;
        }
        .menu-toggle span {
            width: 22px;
            height: 2px;
            background: var(--heading);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .menu-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* ============ 分类页 Hero ============ */
        .category-hero {
            background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
            border-bottom: 1px solid var(--border);
            padding: 64px 0 56px;
        }
        .category-hero-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
        }
        .category-hero-content {
            flex: 1 1 auto;
        }
        .category-hero h1 {
            font-size: 40px;
            line-height: 1.2;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .category-hero h1 span {
            color: var(--primary);
        }
        .category-hero .subtitle {
            font-size: 16px;
            color: var(--body-text);
            max-width: 600px;
            margin-bottom: 24px;
        }
        .category-hero .badge-line {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            border-radius: var(--radius-badge);
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
        }
        .badge-secondary {
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
        }
        .category-hero-media {
            flex: 0 0 360px;
            max-width: 360px;
        }
        .category-hero-media img {
            width: 100%;
            height: 240px;
            border-radius: var(--radius-img);
            object-fit: cover;
            box-shadow: var(--shadow-card);
        }
        /* ============ 分类页正文两栏 ============ */
        .category-body {
            padding: var(--section-gap) 0;
        }
        .category-grid {
            display: grid;
            grid-template-columns: 6fr 4fr;
            gap: 56px;
            align-items: start;
        }
        .category-content {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .guide-item {
            display: grid;
            grid-template-columns: 200px 1fr;
            gap: 24px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
            scroll-margin-top: 90px;
        }
        .guide-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .guide-item .item-thumb {
            width: 100%;
            height: 140px;
            border-radius: var(--radius-img);
            object-fit: cover;
            background: var(--alt-bg);
        }
        .guide-item .item-content {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .guide-item .item-tag {
            font-size: 13px;
            color: var(--primary);
            background: rgba(37, 99, 235, 0.06);
            padding: 4px 10px;
            border-radius: 999px;
            align-self: flex-start;
        }
        .guide-item h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
        }
        .guide-item p {
            font-size: 14px;
            color: var(--muted-text);
            line-height: 1.7;
        }
        .guide-item .item-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 4px;
        }
        /* 侧边栏 */
        .category-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 96px;
        }
        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-nav {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav a {
            display: block;
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--body-text);
            font-weight: 500;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .sidebar-nav a:hover {
            background: #EFF6FF;
            color: var(--primary);
        }
        .sidebar-cta {
            background: linear-gradient(135deg, #EFF6FF 0%, #FFFFFF 100%);
            border: 1px solid rgba(37, 99, 235, 0.15);
            border-radius: var(--radius-card);
            padding: 28px;
            text-align: center;
        }
        .sidebar-cta .icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 20px;
        }
        .sidebar-cta h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .sidebar-cta p {
            font-size: 14px;
            color: var(--muted-text);
            margin-bottom: 20px;
        }
        .sidebar-cta .btn {
            width: 100%;
        }
        /* ============ FAQ ============ */
        .faq-section {
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 96px 0;
        }
        .faq-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .faq-header h2 {
            font-size: 32px;
            font-weight: 700;
        }
        .faq-header p {
            color: var(--muted-text);
            font-size: 16px;
            margin-top: 8px;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .faq-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            cursor: pointer;
            user-select: none;
        }
        .faq-q-icon {
            width: 26px;
            height: 26px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .faq-question-text {
            flex: 1;
            font-size: 15px;
            font-weight: 600;
            color: var(--heading);
        }
        .faq-toggle {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
        }
        .faq-toggle::before,
        .faq-toggle::after {
            content: "";
            position: absolute;
            background: var(--muted-text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .faq-toggle::before {
            width: 2px;
            height: 18px;
            top: 1px;
            left: 9px;
        }
        .faq-toggle::after {
            width: 18px;
            height: 2px;
            top: 9px;
            left: 1px;
        }
        .faq-item.open .faq-toggle::before {
            transform: rotate(90deg);
            opacity: 0;
        }
        .faq-item.open .faq-toggle::after {
            background: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            font-size: 14px;
            color: #475569;
            line-height: 1.7;
            padding-left: 40px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 12px;
            padding-bottom: 4px;
        }
        /* ============ CTA ============ */
        .cta-section {
            padding: 96px 0 0;
        }
        .cta-inner {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-top: 4px solid var(--secondary);
            border-radius: var(--radius-card);
            padding: 64px 48px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .cta-inner h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-inner p {
            color: var(--muted-text);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-inner .btn {
            min-width: 280px;
            height: 56px;
            font-size: 16px;
            border-radius: 12px;
        }
        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--footer-bg);
            color: #94A3B8;
            padding: 64px 0 0;
            margin-top: 96px;
        }
        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #94A3B8;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.6;
        }
        .footer-middle {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            display: flex;
            justify-content: center;
            gap: 16px;
        }
        .social-icon {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #94A3B8;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .social-icon:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: #64748B;
        }
        /* ============ 响应式 ============ */
        @media (max-width: 1023px) {
            .category-hero-media {
                flex: 0 0 280px;
                max-width: 280px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 48px;
            }
            .category-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .sidebar-card {
                flex: 1 1 calc(50% - 12px);
            }
            .footer-main {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-inner {
                height: 64px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px 20px;
                box-shadow: 0 12px 24px rgba(15, 23, 42, 0.1);
                border-bottom: 1px solid var(--border);
                animation: navDropdown 0.2s ease;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-link {
                height: auto;
                padding: 14px 8px;
                border-bottom: none;
                border-left: 3px solid transparent;
                font-size: 16px;
            }
            .nav-link.active {
                border-left-color: var(--primary);
                border-bottom: none;
            }
            .header-actions {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .category-hero {
                padding: 40px 0 32px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero-inner {
                flex-direction: column;
                gap: 24px;
            }
            .category-hero-media {
                flex: 0 0 auto;
                max-width: 100%;
                width: 100%;
            }
            .category-hero-media img {
                height: 180px;
            }
            .category-body {
                padding: 64px 0;
            }
            .guide-item {
                grid-template-columns: 1fr;
                gap: 16px;
                padding: 16px;
            }
            .guide-item .item-thumb {
                height: 160px;
            }
            .sidebar-card {
                flex: 1 1 100%;
            }
            .faq-section {
                padding: 64px 0;
            }
            .faq-header h2 {
                font-size: 24px;
            }
            .faq-answer {
                padding-left: 0;
            }
            .cta-section {
                padding: 64px 0 0;
            }
            .cta-inner {
                padding: 40px 24px;
            }
            .cta-inner .btn {
                min-width: 100%;
                width: 100%;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @keyframes navDropdown {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #EFF6FF;
            --secondary: #F59E0B;
            --secondary-light: #FEF3C7;
            --bg: #F8FAFC;
            --surface: #FFFFFF;
            --bg-alt: #F1F5F9;
            --heading: #0F172A;
            --text: #334155;
            --text-muted: #64748B;
            --text-faint: #94A3B8;
            --border: #E2E8F0;
            --border-hover: #CBD5E1;
            --success: #10B981;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-md: 12px;
            --shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .04);
            --shadow-hover: 0 8px 24px rgba(15, 23, 42, .08);
            --shadow-primary: 0 2px 8px rgba(37, 99, 235, .3);
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: Inter, "Helvetica Neue", sans-serif;
            --container: 1200px;
            --space: 96px;
            --space-mob: 64px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

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

        .section {
            padding: 96px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--heading);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .section-head p {
            margin-top: 12px;
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.7;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 24px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            transition: all .2s ease;
            line-height: 1.2;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, .35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(37, 99, 235, .3);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(37, 99, 235, .35);
            outline-offset: 2px;
        }
        .btn-outline {
            background: var(--surface);
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-block {
            width: 100%;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: var(--surface);
            box-shadow: 0 1px 4px rgba(15, 23, 42, .06);
            border-bottom: 1px solid var(--border);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--heading);
            font-weight: 700;
            font-size: 20px;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--heading);
        }
        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
            letter-spacing: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 8px;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            transition: color .2s, background .2s;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            position: relative;
        }
        .search-box svg {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            width: 16px;
            height: 16px;
            color: var(--text-faint);
            pointer-events: none;
        }
        .search-box input {
            height: 40px;
            width: 220px;
            border-radius: 999px;
            border: 1px solid var(--border);
            padding: 0 16px 0 38px;
            font-size: 14px;
            outline: none;
            background: var(--bg);
            transition: border-color .2s, box-shadow .2s, width .2s, background .2s;
            color: var(--text);
        }
        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
            width: 260px;
            background: #fff;
        }
        .search-box input::placeholder {
            color: var(--text-faint);
        }
        .nav-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: var(--shadow-primary);
            transition: background .2s, transform .2s, box-shadow .2s;
            white-space: nowrap;
        }
        .nav-btn:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, .35);
        }
        .nav-btn:active {
            transform: translateY(0);
        }
        .burger {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            background: var(--surface);
        }
        .burger svg {
            width: 22px;
            height: 22px;
            stroke: var(--heading);
        }
        .mobile-panel {
            display: none;
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 16px 0 24px;
        }
        .mobile-panel.open {
            display: block;
            animation: slideIn .2s ease;
        }
        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .mobile-search input {
            width: 100%;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--bg);
            padding: 0 16px;
            font-size: 14px;
            outline: none;
            color: var(--text);
            transition: border-color .2s, box-shadow .2s;
        }
        .mobile-search input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
        }
        .mobile-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-top: 14px;
        }
        .mobile-nav a {
            padding: 12px 8px;
            border-radius: 8px;
            font-size: 15px;
            color: var(--text);
            font-weight: 500;
            transition: background .2s, color .2s;
        }
        .mobile-nav a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .mobile-nav a.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }
        .mobile-cta {
            display: flex;
            margin-top: 16px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 15px;
            transition: background .2s;
        }
        .mobile-cta:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        .cat-hero {
            background: linear-gradient(180deg, #EFF6FF 0%, #F8FAFC 100%);
            border-bottom: 1px solid var(--border);
        }
        .cat-hero-inner {
            padding: 72px 0 64px;
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--secondary-light);
            color: #B45309;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 6px;
            margin-bottom: 20px;
        }
        .cat-hero h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 700;
            color: var(--heading);
            letter-spacing: -0.02em;
        }
        .cat-hero h1 span {
            color: var(--primary);
            white-space: nowrap;
        }
        .hero-lead {
            margin-top: 20px;
            font-size: 16px;
            color: var(--text-muted);
            max-width: 520px;
            line-height: 1.75;
        }
        .hero-search {
            margin-top: 28px;
            display: flex;
            gap: 10px;
        }
        .hero-search input {
            flex: 1;
            height: 48px;
            border-radius: 10px;
            border: 1px solid var(--border);
            padding: 0 16px;
            font-size: 15px;
            outline: none;
            background: #fff;
            transition: border-color .2s, box-shadow .2s;
            color: var(--text);
        }
        .hero-search input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
        }
        .hero-search input::placeholder {
            color: var(--text-faint);
        }
        .hero-visual {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            min-height: 300px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            box-shadow: var(--shadow-hover);
        }
        .hero-visual::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, .06) 0%, rgba(15, 23, 42, .32) 100%);
        }
        .hero-visual-card {
            position: absolute;
            left: 20px;
            bottom: 20px;
            right: 20px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(6px);
            border-radius: 14px;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: 0 4px 16px rgba(15, 23, 42, .12);
        }
        .hero-visual-card .pulse {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--success);
            flex-shrink: 0;
            box-shadow: 0 0 0 4px rgba(16, 185, 129, .18);
        }
        .hero-visual-card p {
            font-size: 14px;
            color: var(--heading);
            font-weight: 600;
        }

        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .topic-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: transform .25s, box-shadow .25s, border-color .25s;
        }
        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }
        .topic-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .topic-icon svg {
            width: 22px;
            height: 22px;
        }
        .topic-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .topic-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .faq-wrap {
            display: grid;
            grid-template-columns: 1.2fr .8fr;
            gap: 48px;
            align-items: start;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color .2s, box-shadow .2s;
        }
        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .faq-toggle {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            text-align: left;
        }
        .faq-q {
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .faq-question {
            flex: 1;
            font-size: 16px;
            font-weight: 600;
            color: var(--heading);
            line-height: 1.4;
        }
        .faq-icon {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--primary);
            border-radius: 2px;
        }
        .faq-icon::before {
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            transform: translateX(-50%);
        }
        .faq-icon::after {
            top: 50%;
            left: 0;
            right: 0;
            height: 2px;
            transform: translateY(-50%);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text);
            line-height: 1.7;
        }
        .faq-aside {
            position: sticky;
            top: 90px;
            border-radius: 16px;
            background: var(--secondary-light);
            border: 1px solid #FDE68A;
            padding: 28px;
        }
        .faq-aside h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--heading);
            line-height: 1.4;
        }
        .faq-aside p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 12px 0 20px;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .step-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 28px 24px;
            position: relative;
            transition: transform .25s, box-shadow .25s;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            display: block;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        .support-grid {
            display: grid;
            grid-template-columns: .9fr 1.1fr;
            gap: 48px;
            align-items: center;
        }
        .support-media {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .support-media img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        .support-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .support-item {
            display: flex;
            gap: 16px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 20px;
            transition: border-color .2s, box-shadow .2s;
        }
        .support-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow);
        }
        .support-item-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .support-item-icon svg {
            width: 20px;
            height: 20px;
        }
        .support-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--heading);
            line-height: 1.4;
        }
        .support-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-top: 2px;
        }

        .cta-section {
            padding-top: 48px;
        }
        .cta-block {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 20px;
            text-align: center;
            padding: 64px 24px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 96px;
            height: 4px;
            border-radius: 0 0 4px 4px;
            background: var(--secondary);
        }
        .cta-block h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--heading);
            letter-spacing: -0.02em;
            line-height: 1.3;
        }
        .cta-block p {
            margin-top: 14px;
            color: var(--text-muted);
            font-size: 16px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: #0F172A;
            color: #CBD5E1;
            padding: 64px 0 0;
        }
        .footer-main {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }
        .footer-brand p {
            color: #94A3B8;
            font-size: 14px;
            margin-top: 14px;
            max-width: 340px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 15px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a,
        .footer-contact span {
            color: #94A3B8;
            font-size: 14px;
            transition: color .2s;
            line-height: 1.6;
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-middle {
            display: flex;
            justify-content: center;
            gap: 16px;
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, .1);
        }
        .social-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #CBD5E1;
            transition: background .2s, color .2s;
        }
        .social-icon:hover {
            background: rgba(255, 255, 255, .2);
            color: #fff;
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-bottom p {
            color: #64748B;
            font-size: 13px;
        }

        @media (max-width: 1023px) {
            .cat-hero-inner {
                grid-template-columns: 1fr;
            }
            .hero-visual {
                min-height: 240px;
            }
            .main-nav {
                display: none;
            }
            .burger {
                display: inline-flex;
            }
            .mobile-panel.open {
                display: block;
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-wrap {
                grid-template-columns: 1fr;
            }
            .faq-aside {
                position: static;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .support-grid {
                grid-template-columns: 1fr;
            }
            .footer-main {
                grid-template-columns: 1fr 1fr;
            }
            .search-box input {
                width: 180px;
            }
            .search-box input:focus {
                width: 200px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 64px 0;
            }
            .container {
                padding: 0 16px;
            }
            .nav-inner {
                height: 64px;
            }
            .search-box {
                display: none;
            }
            .nav-btn {
                display: none;
            }
            .cat-hero-inner {
                padding: 48px 0 40px;
                gap: 32px;
            }
            .cat-hero h1 {
                font-size: 32px;
            }
            .hero-lead {
                font-size: 15px;
            }
            .hero-search {
                flex-direction: column;
            }
            .hero-search .btn {
                width: 100%;
            }
            .section-head h2,
            .cta-block h2 {
                font-size: 24px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .support-grid {
                gap: 32px;
            }
            .support-media img {
                height: 240px;
            }
            .cta-block {
                padding: 48px 20px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .mobile-panel {
                padding: 16px 0 20px;
            }
        }