/* roulang page: index */
:root {
  --primary: #3A6B8C;
  --primary-dark: #1F435C;
  --primary-light: #EAF2F7;
  --accent: #E8A33D;
  --accent-dark: #C9862A;
  --bg: #F5F9FC;
  --surface: #FFFFFF;
  --text: #183244;
  --text-secondary: #334E61;
  --text-muted: #6B7F8D;
  --border: #DFE9F0;
  --success: #2E9E7B;
  --warning: #D97706;
  --error: #C93B3B;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(24, 50, 68, 0.06), 0 8px 24px rgba(24, 50, 68, 0.08);
  --shadow-md: 0 12px 32px rgba(24, 50, 68, 0.14);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-pad {
  padding: 80px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  letter-spacing: -0.01em;
}
.section-head p {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 15px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.section-title-left {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}
/* 双色标题点缀 */
.title-accent {
  color: var(--primary);
  position: relative;
}
.title-accent::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 8px;
  background: rgba(232, 163, 61, 0.25);
  z-index: -1;
  border-radius: 4px;
}
/* ===================== 双层导航 ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(24, 50, 68, 0.04);
}
.header-top {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}
.logo-mark::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -4px;
  width: 18px;
  height: 18px;
  background: var(--accent);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
}
.logo-text {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.02em;
}
.logo-text em {
  font-style: normal;
  color: var(--accent);
}
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  transition: all .2s ease;
}
.search-btn:hover {
  background: var(--primary);
  color: #fff;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 38px;
  padding: 0 18px;
  background: var(--accent);
  color: #1F2A30;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: background .2s ease, transform .2s ease;
}
.header-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  color: #fff;
}
.header-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  color: var(--primary);
  font-size: 18px;
}
.nav-tabs {
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.85);
}
.nav-list {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-list::-webkit-scrollbar {
  display: none;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all .2s ease;
}
.nav-link i {
  font-size: 15px;
}
.nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(58, 107, 140, 0.3);
}
/* 移动端下拉 */
.mobile-panel {
  display: none;
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 16px 24px;
  box-shadow: 0 12px 24px rgba(24, 50, 68, 0.08);
}
.mobile-panel.open {
  display: block;
}
.mobile-search {
  width: 100%;
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.mobile-search input {
  flex: 1;
}
/* ===================== 按钮 ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  transition: all .25s ease;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(58, 107, 140, 0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(31, 67, 92, 0.3);
}
.btn-accent {
  background: var(--accent);
  color: #1F2A30;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(232, 163, 61, 0.35);
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-sm {
  height: 34px;
  padding: 0 16px;
  font-size: 13px;
  border-radius: 6px;
}
/* ===================== Hero ===================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #EDF4F9 0%, #F7FAFC 45%, #F5F9FC 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(232, 163, 61, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(58, 107, 140, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
  padding: 80px 24px 90px;
  max-width: 1200px;
  margin: 0 auto;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  border: 1px solid rgba(58, 107, 140, 0.15);
}
.hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.hero h1 .highlight {
  color: var(--primary);
}
.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-visual {
  position: relative;
}
.hero-visual .hero-img {
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(24, 50, 68, 0.18);
  transform: rotate(1.5deg);
  transition: transform .3s ease;
}
.hero-visual:hover .hero-img {
  transform: rotate(0deg) scale(1.01);
}
.hero-visual::after {
  content: '';
  position: absolute;
  inset: -16px -16px -16px 16px;
  border: 2px dashed rgba(58, 107, 140, 0.18);
  border-radius: var(--radius-lg);
  z-index: -1;
}
/* ===================== 卖点三连 ===================== */
.features-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.features-grid {
  display: grid;
  gap: 24px;
}
.feature-item {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  gap: 20px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: box-shadow .25s ease, transform .25s ease;
  align-items: start;
}
.feature-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: rgba(58, 107, 140, 0.2);
}
.feature-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.35;
  line-height: 1;
}
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 18px;
}
.feature-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}
.feature-body p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}
.feature-meta {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
}
/* ===================== 场景演示 4步 ===================== */
.scenario-section {
  background: var(--bg);
}
.scenario-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.scenario-img-box {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.scenario-img-box img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  transition: transform .4s ease;
}
.scenario-img-box:hover img {
  transform: scale(1.03);
}
.scenario-overlay {
  position: absolute;
  left: 16px;
  bottom: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  border-left: 4px solid var(--accent);
  box-shadow: 0 8px 24px rgba(24, 50, 68, 0.15);
}
.scenario-overlay p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.scenario-overlay strong {
  color: var(--primary-dark);
  font-size: 15px;
}
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 24px;
}
.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 20px;
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: box-shadow .2s ease;
}
.step-item:hover {
  box-shadow: var(--shadow-sm);
}
.step-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  border-radius: 12px;
}
.step-content h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.step-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}
/* ===================== 社会认同 ===================== */
.stats-section {
  background: var(--primary-dark);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(45deg, transparent, transparent 40px, rgba(255, 255, 255, 0.02) 40px, rgba(255, 255, 255, 0.02) 80px);
}
.stats-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {
  padding: 20px 12px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: background .2s ease, transform .2s ease;
}
.stat-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}
.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  font-style: normal;
}
.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 4px;
}
/* 证言 */
.testimonial-section {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.testimonial-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 20px;
}
.testimonial-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  position: relative;
}
.testimonial-card.main {
  background: var(--primary-light);
  border-color: rgba(58, 107, 140, 0.2);
}
.testimonial-card .quote-mark {
  font-size: 40px;
  color: var(--accent);
  opacity: 0.6;
  font-family: Georgia, serif;
  line-height: 1;
  margin-bottom: 8px;
}
.testimonial-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}
.testimonial-card .author {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.testimonial-card .author span {
  display: block;
  font-weight: 400;
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 2px;
}
/* ===================== FAQ ===================== */
.faq-section {
  background: var(--bg);
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow .2s ease;
}
.faq-item:hover {
  box-shadow: var(--shadow-sm);
}
.faq-item.open {
  border-color: rgba(58, 107, 140, 0.3);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: none;
  border: none;
}
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  font-size: 18px;
  transition: transform .3s ease, background .2s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .3s ease;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}
.faq-answer p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px dashed var(--border);
  padding-top: 14px;
}
/* ===================== 最新资讯 CMS ===================== */
.news-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow .25s ease, transform .25s ease;
}
.news-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.news-card-img {
  position: relative;
  height: 170px;
  overflow: hidden;
}
.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.news-card:hover .news-card-img img {
  transform: scale(1.05);
}
.news-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(24, 50, 68, 0.3));
  pointer-events: none;
}
.news-tag {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 2;
  padding: 4px 12px;
  background: var(--accent);
  color: #1F2A30;
  font-size: 12px;
  font-weight: 700;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.news-card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.news-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 8px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.news-date {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-empty {
  text-align: center;
  padding: 48px 24px;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 15px;
  grid-column: 1 / -1;
}
/* ===================== CTA ===================== */
.cta-section {
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}
.cta-section::after {
  content: '';
  position: absolute;
  left: 40%;
  bottom: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(232, 163, 61, 0.08);
}
.cta-inner {
  position: relative;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  z-index: 2;
  padding: 0 24px;
}
.cta-inner h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 12px;
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 28px;
}
.cta-inner .btn-accent {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.cta-meta {
  margin-top: 18px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
/* ===================== 页脚 ===================== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .logo-text {
  color: #fff;
  font-size: 26px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color .2s ease;
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-contact li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.footer-bottom {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-links {
  display: flex;
  gap: 16px;
}
.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
}
.footer-links a:hover {
  color: var(--accent);
}
/* ===================== 固定底部转化条 ===================== */
.fixed-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 900;
  background: rgba(31, 67, 92, 0.95);
  backdrop-filter: blur(10px);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  border-top: 2px solid var(--accent);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
}
.fixed-bar-txt {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
}
.fixed-bar-txt span {
  color: var(--accent);
}
.fixed-bar .btn-accent {
  height: 38px;
  padding: 0 24px;
  font-size: 14px;
}
body.has-fixed-bar {
  padding-bottom: 64px;
}
/* ===================== 响应式 ===================== */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr 0.8fr;
    gap: 32px;
    padding: 60px 24px 70px;
  }
  .hero h1 {
    font-size: 34px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonial-grid {
    grid-template-columns: 1fr 1fr;
  }
  .testimonial-card.main {
    grid-column: 1 / -1;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}
@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  .section-pad {
    padding: 56px 0;
  }
  .header-top {
    height: 64px;
    padding: 0 20px;
  }
  .header-search {
    display: none;
  }
  .header-menu-btn {
    display: inline-flex;
  }
  .nav-tabs {
    display: block;
  }
  .nav-list {
    padding: 6px 16px;
    gap: 6px;
  }
  .nav-link {
    padding: 7px 14px;
    font-size: 13px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    padding: 48px 20px 56px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .hero-sub {
    font-size: 16px;
  }
  .hero-visual {
    max-width: 500px;
    margin: 0 auto;
  }
  .hero-visual .hero-img {
    max-height: 280px;
    width: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
  }
  .features-grid {
    gap: 16px;
  }
  .feature-item {
    grid-template-columns: 50px 1fr;
    gap: 14px;
    padding: 20px;
  }
  .scenario-wrap {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .scenario-img-box img {
    height: 300px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-num {
    font-size: 32px;
  }
  .news-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-bottom: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .fixed-bar {
    gap: 12px;
    padding: 10px 16px;
  }
  .fixed-bar-txt {
    font-size: 13px;
  }
  .fixed-bar .btn-accent {
    height: 34px;
    padding: 0 18px;
    font-size: 13px;
  }
  .cta-inner h2 {
    font-size: 26px;
  }
}
@media (max-width: 520px) {
  .hero h1 {
    font-size: 26px;
  }
  .feature-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .feature-num {
    display: none;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stat-num {
    font-size: 28px;
  }
  .fixed-bar-txt {
    display: block;
  }
  .fixed-bar {
    justify-content: space-between;
  }
}

/* roulang page: article */
:root{
  --primary:#3A6B8C;
  --primary-dark:#1F435C;
  --primary-light:#EAF2F7;
  --accent:#E8A33D;
  --accent-dark:#C9862A;
  --bg:#F5F9FC;
  --surface:#FFFFFF;
  --text-main:#183244;
  --text-sub:#334E61;
  --text-muted:#6B7F8D;
  --border:#DFE9F0;
  --radius:14px;
  --radius-sm:8px;
  --shadow:0 1px 3px rgba(24,50,68,.06),0 8px 24px rgba(24,50,68,.08);
  --shadow-hover:0 12px 32px rgba(24,50,68,.14);
  --container:1200px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text-main);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent-dark)}
button{font-family:var(--font);cursor:pointer}
input{font-family:var(--font)}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
@media(max-width:767px){.container{padding:0 20px}}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  box-shadow:0 2px 12px rgba(24,50,68,.04);
}
.header-top{padding:14px 0;border-bottom:1px solid var(--border)}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--text-main)}
.logo-mark{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;font-size:20px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(58,107,140,.3);
  position:relative;overflow:hidden;
}
.logo-mark::after{content:"";position:absolute;bottom:4px;left:6px;right:6px;height:3px;border-radius:2px;background:var(--accent)}
.logo-text{font-size:20px;font-weight:700;letter-spacing:.5px;color:var(--text-main)}
.logo-text em{font-style:normal;color:var(--primary);margin-left:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{
  width:220px;height:40px;padding:0 40px 0 16px;
  border:1px solid var(--border);border-radius:999px;
  background:var(--bg);font-size:14px;color:var(--text-main);
  outline:none;transition:all .25s ease;
}
.search-box input::placeholder{color:var(--text-muted)}
.search-box input:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(58,107,140,.12)}
.search-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:15px;color:var(--text-muted);pointer-events:none}
.search-toggle{display:none;width:40px;height:40px;border:1px solid var(--border);border-radius:10px;background:var(--surface);align-items:center;justify-content:center;font-size:18px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:none;border-radius:var(--radius-sm);font-weight:600;font-size:15px;transition:all .22s ease;cursor:pointer;text-decoration:none;padding:0 20px;height:44px;line-height:1}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(58,107,140,.25)}
.btn-accent{background:var(--accent);color:#183244}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(232,163,61,.35)}
.btn-outline{background:transparent;border:1px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-2px)}
.btn:focus-visible,.btn-outline:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.nav-tabs{border-bottom:1px solid var(--border);background:var(--surface)}
.nav-list{display:flex;gap:4px;overflow-x:auto;padding:0 24px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.nav-list::-webkit-scrollbar{display:none}
.nav-link{
  display:flex;align-items:center;gap:6px;
  padding:12px 18px;font-size:14px;font-weight:500;color:var(--text-sub);
  white-space:nowrap;border-radius:10px 10px 0 0;
  transition:all .2s ease;border-bottom:2px solid transparent;margin-bottom:-1px;
}
.nav-link i{font-style:normal;font-size:16px}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link.active{color:var(--primary);background:var(--primary-light);border-bottom-color:var(--primary);font-weight:600}
@media(max-width:767px){
  .search-box{display:none}
  .search-toggle{display:flex}
  .search-box.open{display:flex;position:absolute;top:100%;left:0;right:0;background:#fff;padding:10px 20px;border-bottom:1px solid var(--border);z-index:10}
  .search-box.open input{width:100%}
  .nav-list{padding:0 12px}
  .nav-link{padding:10px 14px;font-size:13px}
  .logo-text{font-size:18px}
}

/* ===== Breadcrumb ===== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:24px 0 8px;font-size:14px;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#B9C6CF}
.breadcrumb .current{color:var(--text-main);font-weight:500;max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(max-width:767px){.breadcrumb{padding-top:16px;font-size:13px}}

/* ===== Article Detail ===== */
.article-page{padding:8px 0 72px}
.article-card{
  background:var(--surface);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:44px 48px;
  max-width:840px;margin:0 auto;
  border:1px solid rgba(223,233,240,.6);
}
.article-header{margin-bottom:32px}
.article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.badge{
  display:inline-flex;align-items:center;gap:5px;
  background:var(--primary-light);color:var(--primary);
  font-size:13px;font-weight:600;padding:4px 12px;border-radius:999px;
}
.badge-accent{background:rgba(232,163,61,.14);color:var(--accent-dark)}
.article-meta time{font-size:13px;color:var(--text-muted)}
.article-meta .author{font-size:13px;color:var(--text-muted)}
.article-header h1{font-size:32px;line-height:1.3;font-weight:700;color:var(--text-main);margin-bottom:14px;letter-spacing:.3px}
.article-summary{font-size:15px;color:var(--text-sub);line-height:1.7;padding:14px 18px;background:var(--bg);border-left:3px solid var(--accent);border-radius:0 10px 10px 0}

.article-cover{margin:32px 0 36px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.article-cover img{width:100%;height:auto;object-fit:cover;aspect-ratio:16/7.5}
.article-cover figcaption{background:var(--surface);padding:10px 16px;font-size:13px;color:var(--text-muted);text-align:center;border-top:1px solid var(--border)}

.article-content{font-size:16px;line-height:1.8;color:var(--text-main)}
.article-content h2{font-size:24px;font-weight:700;color:var(--text-main);margin:36px 0 16px;padding-bottom:10px;border-bottom:1px solid var(--border);letter-spacing:.3px}
.article-content h3{font-size:19px;font-weight:600;color:var(--primary-dark);margin:28px 0 12px}
.article-content p{margin:0 0 18px;color:var(--text-main)}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--accent-dark)}
.article-content blockquote{margin:24px 0;padding:16px 22px;background:var(--primary-light);border-left:4px solid var(--accent);border-radius:0 10px 10px 0;color:var(--text-sub);font-style:normal}
.article-content ul,.article-content ol{margin:0 0 18px;padding-left:26px}
.article-content li{margin-bottom:6px;line-height:1.7}
.article-content img{border-radius:10px;margin:16px 0;box-shadow:var(--shadow)}
.article-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.article-content th{background:var(--primary);color:#fff;font-weight:600;padding:10px 14px;text-align:left}
.article-content td{padding:10px 14px;border-bottom:1px solid var(--border)}
.article-content tr:nth-child(even){background:var(--bg)}
.article-content code{background:var(--primary-light);color:var(--primary-dark);padding:2px 8px;border-radius:6px;font-size:14px;font-family:"SFMono-Regular",Consolas,monospace}
.article-content pre{background:var(--primary-dark);color:#dce8ef;padding:20px;border-radius:10px;overflow-x:auto;margin:20px 0;font-size:14px;line-height:1.6}
.article-content pre code{background:transparent;color:inherit;padding:0}

@media(max-width:767px){
  .article-card{padding:24px 20px;border-radius:12px}
  .article-header h1{font-size:24px;line-height:1.35}
  .article-summary{font-size:14px;padding:12px 14px}
  .article-content{font-size:15px}
  .article-content h2{font-size:20px;margin-top:28px}
  .article-content h3{font-size:17px}
  .article-cover{border-radius:10px}
}

/* ===== Tags / Share / PrevNext ===== */
.article-tags{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:36px 0 24px;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.article-tags .label{font-size:14px;color:var(--text-muted);margin-right:4px}
.tag{display:inline-block;padding:5px 14px;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:500;border-radius:999px;transition:all .2s}
.tag:hover{background:var(--primary);color:#fff;transform:translateY(-1px)}
.article-share{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:24px 0}
.article-share .share-label{font-size:14px;color:var(--text-muted)}
.share-btn{display:inline-flex;align-items:center;gap:4px;padding:8px 16px;background:var(--bg);border:1px solid var(--border);border-radius:8px;font-size:13px;color:var(--text-sub);cursor:pointer;transition:all .2s}
.share-btn:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.share-btn i{font-style:normal}
.article-pagination{display:flex;justify-content:space-between;gap:16px;margin-top:32px;flex-wrap:wrap}
.page-link{flex:1;min-width:180px;display:block;padding:16px 20px;background:var(--bg);border:1px solid var(--border);border-radius:10px;transition:all .25s}
.page-link:hover{background:var(--surface);border-color:var(--primary);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.page-link .dir{display:block;font-size:12px;color:var(--text-muted);margin-bottom:4px}
.page-link .ttl{display:block;font-size:14px;color:var(--text-main);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-link.next{text-align:right}
@media(max-width:767px){
  .article-pagination{flex-direction:column}
  .page-link{min-width:100%}
}

/* ===== Related ===== */
.related-section{max-width:840px;margin:56px auto 0}
.related-section h2{font-size:22px;font-weight:700;color:var(--text-main);margin-bottom:24px;display:flex;align-items:center;gap:10px}
.related-section h2::before{content:"";width:4px;height:22px;background:var(--accent);border-radius:2px;display:inline-block}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{
  background:var(--surface);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);border:1px solid rgba(223,233,240,.6);
  transition:all .25s ease;display:block;color:var(--text-main);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);color:var(--text-main)}
.related-card .thumb{height:120px;overflow:hidden;position:relative}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.related-card:hover .thumb img{transform:scale(1.05)}
.related-card .body{padding:16px 18px}
.related-card .body h3{font-size:15px;font-weight:600;line-height:1.4;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .body p{font-size:13px;color:var(--text-muted);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .meta{display:flex;align-items:center;gap:8px;margin-top:10px;font-size:12px;color:var(--text-muted)}
.related-card .meta .badge{font-size:11px;padding:2px 8px}
@media(max-width:767px){
  .related-grid{grid-template-columns:1fr;gap:16px}
}

/* ===== Not Found ===== */
.not-found{text-align:center;padding:100px 24px}
.not-found .nf-icon{font-size:56px;margin-bottom:16px;opacity:.5}
.not-found h2{font-size:28px;color:var(--text-main);margin-bottom:10px}
.not-found p{color:var(--text-muted);margin-bottom:24px}
.not-found .btn{display:inline-flex}

/* ===== Footer ===== */
.site-footer{background:var(--primary-dark);color:#B9C6CF;font-size:14px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding:56px 0 40px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand .logo-mark{background:rgba(255,255,255,.12);box-shadow:none}
.footer-brand .logo-text{color:#fff}
.footer-brand p{line-height:1.7;max-width:320px;color:#9FB2BF;margin-top:8px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.5px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:#9FB2BF;transition:color .2s;font-size:14px}
.footer-col ul a:hover{color:var(--accent)}
.footer-contact li{display:flex;align-items:center;gap:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:#7E95A3}
.footer-links{display:flex;gap:12px}
.footer-links a{color:#9FB2BF;font-size:13px}
.footer-links a:hover{color:var(--accent)}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr 1fr;gap:28px}}
@media(max-width:767px){
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:40px 0 24px}
  .footer-bottom{flex-direction:column;text-align:center}
}

/* ===== Back to Top ===== */
.back-top{
  position:fixed;bottom:24px;right:24px;width:44px;height:44px;
  background:var(--primary);color:#fff;border:none;border-radius:12px;
  font-size:20px;display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:all .3s ease;z-index:99;cursor:pointer;
  box-shadow:0 8px 24px rgba(58,107,140,.3);
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--primary-dark);transform:translateY(-3px)}

/* ===== Reading Progress ===== */
.reading-progress{position:fixed;top:0;left:0;height:3px;background:var(--accent);z-index:200;width:0;transition:width .1s linear}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #3A6B8C;
  --primary-dark: #1F435C;
  --primary-light: #EAF2F7;
  --accent: #E8A33D;
  --accent-dark: #C9862A;
  --bg: #F5F9FC;
  --surface: #FFFFFF;
  --text-main: #183244;
  --text-sub: #334E61;
  --text-muted: #6B7F8D;
  --border: #DFE9F0;
  --success: #2E9E7B;
  --warning: #D97706;
  --error: #C93B3B;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow: 0 1px 3px rgba(24, 50, 68, 0.06), 0 8px 24px rgba(24, 50, 68, 0.08);
  --shadow-hover: 0 12px 32px rgba(24, 50, 68, 0.14);
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --container: 1200px;
  --section-space: 80px;
}

/* ===== 基础重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a { color: var(--primary); text-decoration: none; transition: color .2s ease; }

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

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

ul, ol { list-style: none; }

h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.3; color: var(--text-main); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

/* ===== 按钮体系 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  border: 0;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all .22s ease;
  letter-spacing: .01em;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-accent {
  background: var(--accent);
  color: var(--primary-dark);
}

.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-sm { height: 36px; padding: 0 18px; font-size: 14px; }

.btn-lg { height: 52px; padding: 0 38px; font-size: 16px; }

/* ===== 标签 / 徽章 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid #D6E4EE;
  white-space: nowrap;
}

.badge-accent {
  background: #FDF1DE;
  color: var(--accent-dark);
  border-color: #F5DFB8;
}

.badge-success {
  background: #E5F5EF;
  color: var(--success);
  border-color: #BFE4D6;
}

.badge-gray {
  background: #EFF3F6;
  color: var(--text-muted);
  border-color: #E2E8EC;
}

.tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
  margin: 4px 6px 4px 0;
  border: 1px solid #D6E4EE;
  transition: all .2s ease;
}

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

/* ===== 头部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(24, 50, 68, 0.08);
}

.header-top {
  border-bottom: 1px solid rgba(223, 233, 240, .7);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}

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

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  border-radius: 9px;
  border-bottom-left-radius: 2px;
  position: relative;
}

.logo-mark::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -4px;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  border: 2px solid #fff;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: .02em;
  line-height: 1.2;
}

.logo-text em {
  font-style: normal;
  color: var(--accent-dark);
  font-size: 15px;
  margin-left: 4px;
  font-weight: 600;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  transition: all .2s ease;
  color: var(--text-sub);
}

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

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

.nav-tabs {
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.6);
}

.nav-list {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 8px 0;
}

.nav-list::-webkit-scrollbar { display: none; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  background: transparent;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: all .2s ease;
}

.nav-link i {
  font-style: normal;
  font-size: 15px;
}

.nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
  border-color: #D6E4EE;
}

.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
  border-color: #C9D9E5;
  box-shadow: inset 0 2px 0 rgba(58, 107, 140, .15);
}

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

/* ===== Hero 区 ===== */
.category-hero {
  position: relative;
  padding: 88px 0 76px;
  background: linear-gradient(135deg, #EAF2F7 0%, #F5F9FC 45%, #EDF3F7 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  background-blend-mode: overlay;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.category-hero::before {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(232, 163, 61, 0.16) 0%, transparent 65%);
}

.category-hero::after {
  content: '';
  position: absolute;
  left: -60px;
  bottom: -100px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(58, 107, 140, 0.12) 0%, transparent 60%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.category-hero h1 {
  font-size: 42px;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: .01em;
}

.category-hero h1 .highlight {
  color: var(--primary);
  position: relative;
}

.category-hero h1 .highlight::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 8px;
  background: rgba(232, 163, 61, 0.28);
  z-index: -1;
  border-radius: 4px;
}

.hero-desc {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 30px;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-metrics {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid rgba(223, 233, 240, .8);
}

.metric-item { padding-right: 20px; }

.metric-item .metric-num {
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  display: block;
}

.metric-item .metric-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: .02em;
}

/* ===== 板块通用 ===== */
.section {
  padding: var(--section-space) 0;
}

.section-alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 42px;
}

.section-head h2 {
  font-size: 30px;
  letter-spacing: .01em;
  line-height: 1.3;
  position: relative;
}

.section-head h2::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 24px;
  background: var(--accent);
  border-radius: 4px;
  margin-right: 12px;
  vertical-align: -3px;
}

.section-head .extra-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  padding: 8px 4px;
  border-bottom: 2px solid transparent;
  transition: border-color .2s ease;
  white-space: nowrap;
}

.section-head .extra-link:hover {
  border-bottom-color: var(--accent);
}

/* ===== 卖点编号卡片 ===== */
.feature-list {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 28px;
}

.feature-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease;
  position: relative;
  overflow: hidden;
}

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

.feature-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--primary);
  opacity: 0;
  transition: opacity .25s ease;
}

.feature-item:hover::before { opacity: 1; }

.feature-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .08em;
  margin-bottom: 12px;
  display: block;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 18px;
  border: 1px solid #D6E4EE;
}

.feature-item h3 {
  font-size: 19px;
  margin-bottom: 10px;
  font-weight: 600;
}

.feature-item p {
  font-size: 14.5px;
  color: var(--text-sub);
  line-height: 1.72;
}

/* ===== 精选专题卡片 ===== */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.featured-card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease;
}

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

.featured-card .cover-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-light) 0%, #E6EEF4 100%);
}

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

.featured-card:hover .cover-wrap img {
  transform: scale(1.05);
}

.cover-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(4px);
  padding: 4px 13px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(24, 50, 68, 0.10);
}

.featured-body {
  padding: 24px;
}

.featured-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 10px;
  transition: color .2s ease;
}

.featured-card:hover .featured-body h3 { color: var(--primary); }

.featured-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.68;
  margin-bottom: 16px;
}

.featured-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
}

.featured-meta .arrow-link {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap .2s ease;
}

.featured-meta .arrow-link:hover { gap: 8px; color: var(--accent-dark); }

/* ===== 时间线流程 ===== */
.process-wrap {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}

.process-lead h2 {
  font-size: 30px;
  margin-bottom: 18px;
}

.process-lead > p {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 26px;
}

.process-steps { position: relative; }

.process-step {
  display: flex;
  gap: 18px;
  margin-bottom: 24px;
  position: relative;
}

.process-step:last-child { margin-bottom: 0; }

.step-num {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-light);
  border: 2px solid var(--primary);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  z-index: 2;
  transition: all .25s ease;
}

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

.step-content h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
}

.process-visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  min-height: 320px;
  background: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}

.process-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
  min-height: 320px;
}

.process-visual-overlay {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-radius: 10px;
  padding: 18px 22px;
  border-left: 4px solid var(--accent);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.process-visual-overlay h4 {
  font-size: 15px;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.process-visual-overlay p {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
}

/* ===== 内容列表区块 ===== */
.content-list-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 28px;
}

.content-item {
  display: flex;
  gap: 18px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(24, 50, 68, 0.04);
  transition: all .22s ease;
}

.content-item:hover {
  border-color: #C9D9E5;
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.content-item .item-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
  border: 1px solid #D6E4EE;
}

.content-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
}

.content-item p {
  font-size: 13.5px;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 10px;
}

.content-item .item-meta {
  font-size: 12.5px;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
}

/* ===== 数据统计 ===== */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: var(--primary-dark);
  border-radius: var(--radius);
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
}

.stats-strip::before {
  content: '';
  position: absolute;
  right: -30px;
  top: -30px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(232, 163, 61, 0.2) 0%, transparent 70%);
}

.stats-strip .stat-item {
  position: relative;
  z-index: 1;
}

.stat-item .stat-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
  display: block;
}

.stat-item .stat-unit {
  font-size: 16px;
  color: var(--accent);
  font-weight: 600;
  margin-left: 2px;
}

.stat-item .stat-name {
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.72);
  margin-top: 8px;
  line-height: 1.5;
}

/* ===== FAQ 手风琴 ===== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow .25s ease, border-color .25s ease;
}

.faq-item:hover {
  border-color: #C9D9E5;
  box-shadow: var(--shadow);
}

.faq-question {
  width: 100%;
  background: none;
  border: 0;
  padding: 22px 24px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color .2s ease;
}

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

.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: transform .3s ease, background .3s ease;
  flex-shrink: 0;
}

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

.faq-item.open .faq-question .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}

.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--text-sub);
  line-height: 1.75;
  border-top: 1px solid transparent;
}

.faq-item.open .faq-answer-inner {
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

/* ===== CTA 区块 ===== */
.cta-section {
  padding: 76px 0;
  position: relative;
  overflow: hidden;
}

.cta-box {
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius);
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(232, 163, 61, 0.15);
}

.cta-box::after {
  content: '';
  position: absolute;
  right: 100px;
  bottom: 20px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.08);
}

.cta-content h2 {
  font-size: 28px;
  color: #fff;
  margin-bottom: 12px;
}

.cta-content p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
}

.cta-content .badge {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
  margin-bottom: 18px;
}

.cta-actions {
  flex-shrink: 0;
  display: flex;
  gap: 12px;
  position: relative;
  z-index: 2;
}

.cta-actions .btn-accent:hover { color: var(--primary-dark); }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 0;
  margin-top: 0;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}

.footer-brand .logo-text {
  color: #fff;
}

.footer-brand .logo-text em {
  color: var(--accent);
}

.footer-brand .logo-mark {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-brand .logo-mark::after {
  border-color: var(--primary-dark);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 16px;
  max-width: 280px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 18px;
  font-weight: 600;
}

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

.footer-col ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: color .2s ease, padding-left .2s ease;
  padding-left: 0;
}

.footer-col ul a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 12px;
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.45);
  font-size: 13px;
}

.footer-links a:hover {
  color: var(--accent);
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .feature-list { grid-template-columns: 1fr 1fr; }
  .featured-grid { grid-template-columns: 1fr 1fr; }
  .process-wrap { grid-template-columns: 1fr; gap: 32px; }
  .content-list-wrap { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 767px) {
  :root { --section-space: 52px; }

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

  .header-row { height: 58px; }

  .logo-mark { width: 34px; height: 34px; font-size: 16px; border-radius: 8px; }

  .logo-text { font-size: 19px; }

  .logo-text em { font-size: 13px; }

  .header-tools .btn { display: none; }

  .category-hero {
    padding: 56px 0 48px;
    background: linear-gradient(160deg, #EAF2F7 0%, #F5F9FC 60%);
  }

  .category-hero h1 { font-size: 30px; line-height: 1.22; }

  .hero-desc { font-size: 15px; }

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

  .hero-metrics { gap: 20px; justify-content: space-between; }

  .metric-item { padding-right: 0; }

  .metric-item .metric-num { font-size: 24px; }

  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; margin-bottom: 30px; }

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

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

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

  .process-visual { min-height: 240px; }

  .process-visual img { min-height: 240px; }

  .step-num { width: 36px; height: 36px; font-size: 14px; }

  .stats-strip { grid-template-columns: 1fr 1fr; padding: 32px 24px; gap: 24px; }

  .stat-item .stat-num { font-size: 28px; }

  .faq-question { font-size: 15px; padding: 18px 20px; }

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

  .cta-box { flex-direction: column; text-align: left; padding: 36px 28px; align-items: flex-start; }

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

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

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

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }

  .footer-bottom { flex-direction: column; text-align: center; }

  .footer-links { justify-content: center; gap: 14px; }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .container { padding-left: 28px; padding-right: 28px; }
}

/* 空态与通用状态 */
.empty-state {
  text-align: center;
  padding: 40px 24px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 14px;
}

.empty-state .empty-icon {
  font-size: 32px;
  display: block;
  margin-bottom: 8px;
  opacity: 0.5;
}

/* roulang page: category2 */
:root {
  --primary: #3A6B8C;
  --primary-dark: #1F435C;
  --primary-light: #EAF2F7;
  --accent: #E8A33D;
  --accent-dark: #C9862A;
  --bg: #F5F9FC;
  --surface: #FFFFFF;
  --text: #183244;
  --text-secondary: #334E61;
  --text-muted: #6B7F8D;
  --border: #DFE9F0;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(24, 50, 68, 0.06), 0 8px 24px rgba(24, 50, 68, 0.08);
  --shadow-hover: 0 12px 32px rgba(24, 50, 68, 0.14);
  --container: 1200px;
  --gap: 24px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }

/* ===== Header & Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(24, 50, 68, 0.04);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(58, 107, 140, 0.25);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}
.logo-text em {
  font-style: normal;
  color: var(--accent);
  font-weight: 700;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-btn {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.search-btn:hover { border-color: var(--primary); background: var(--primary-light); }
.hamburger {
  display: none;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.hamburger span {
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  display: block;
}
.nav-tabs {
  border-top: 1px solid rgba(223, 233, 240, 0.6);
}
.nav-list {
  display: flex;
  gap: 4px;
  padding: 8px 32px;
  max-width: var(--container);
  margin: 0 auto;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all 0.2s ease;
}
.nav-link i { font-style: normal; font-size: 15px; }
.nav-link:hover { background: var(--primary-light); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(58, 107, 140, 0.25); }
.search-panel {
  display: none;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.search-panel.open { display: block; }
.search-panel .inner { display: flex; gap: 10px; max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.search-panel input {
  flex: 1;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 16px;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border 0.2s ease;
}
.search-panel input:focus { border-color: var(--primary); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  min-width: 44px;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(31, 67, 92, 0.2); }
.btn-accent { background: var(--accent); color: #1F2E3A; }
.btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232, 163, 61, 0.25); }
.btn-outline { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 13px 30px; font-size: 15px; }
.btn:focus-visible, .search-btn:focus-visible, .hamburger:focus-visible, .faq-q:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, rgba(234, 242, 247, 0.96), rgba(245, 249, 252, 0.94)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 76px 0 64px;
  border-bottom: 1px solid var(--border);
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0.6;
}
.hero-inner { text-align: center; max-width: 820px; margin: 0 auto; }
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.breadcrumb a:hover { color: var(--primary); }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(24, 50, 68, 0.05);
  margin-bottom: 20px;
}
.hero-title {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
  margin: 0 0 16px;
}
.hero-title em { color: var(--primary); font-style: normal; }
.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.hero-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
.hero-cta-mini {
  margin-top: 28px;
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

/* ===== Section ===== */
.section { padding: 76px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.section-title { font-size: 30px; font-weight: 700; line-height: 1.3; color: var(--text); margin-bottom: 12px; }
.section-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.75; }

/* ===== Feature ===== */
.feature-list { display: flex; flex-direction: column; gap: 18px; max-width: 960px; margin: 0 auto; }
.feature-item {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(223, 233, 240, 0.6);
  transition: all 0.25s ease;
}
.feature-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.feature-num {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-light);
  line-height: 1;
  min-width: 48px;
  font-style: italic;
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.feature-body h3 { font-size: 18px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.feature-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== Featured Cards ===== */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}
.guide-card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(223, 233, 240, 0.7);
  box-shadow: var(--shadow);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}
.guide-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.guide-card-img {
  height: 170px;
  background: linear-gradient(135deg, var(--primary-light), var(--bg));
  position: relative;
  overflow: hidden;
}
.guide-card-img img { width: 100%; height: 100%; object-fit: cover; }
.guide-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(24, 50, 68, 0.2));
}
.guide-card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.94);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  z-index: 2;
  backdrop-filter: blur(4px);
}
.guide-card-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.guide-card-title { font-size: 19px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.guide-card-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; flex: 1; }
.guide-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  margin-top: 16px;
  transition: gap 0.2s ease;
}
.guide-card-link:hover { gap: 8px; color: var(--accent-dark); }

/* ===== Content Index ===== */
.content-index { background: var(--surface); border-top: 1px solid var(--border); }
.content-list { max-width: 960px; margin: 0 auto; }
.content-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 8px;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s ease;
}
.content-item:last-child { border-bottom: none; }
.content-item:hover { background: var(--primary-light); border-radius: 10px; padding-left: 14px; }
.content-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.content-main { flex: 1; }
.content-title { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 2px; }
.content-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.content-arrow { color: var(--text-muted); font-size: 18px; transition: transform 0.2s ease, color 0.2s ease; }
.content-item:hover .content-arrow { transform: translateX(4px); color: var(--primary); }

/* ===== Path ===== */
.path-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
}
.path-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--border) 0 8px, transparent 8px 16px);
  z-index: 0;
}
.path-item {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 26px 22px;
  text-align: center;
  position: relative;
  z-index: 1;
  transition: all 0.25s ease;
}
.path-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.path-step {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(58, 107, 140, 0.25);
}
.path-item:nth-child(2) .path-step { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); box-shadow: 0 6px 16px rgba(232, 163, 61, 0.3); }
.path-title { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.path-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.65; }

/* ===== FAQ ===== */
.faq-section { background: var(--surface); border-top: 1px solid var(--border); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 14px;
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.faq-item.open { border-color: var(--primary); box-shadow: 0 4px 16px rgba(58, 107, 140, 0.08); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 22px;
  cursor: pointer;
  background: transparent;
  border: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  gap: 16px;
}
.faq-q .faq-icon {
  font-size: 20px;
  color: var(--primary);
  font-weight: 400;
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a {
  padding: 0 22px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}
.faq-item.open .faq-a { padding: 0 22px 20px; max-height: 300px; }

/* ===== CTA ===== */
.cta-section { padding: 0 0 76px; }
.cta-box {
  background: linear-gradient(135deg, var(--primary-dark), #162F44);
  border-radius: 16px;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(232, 163, 61, 0.15);
}
.cta-box::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -30px;
  width: 200px;
  height: 100px;
  background: rgba(255, 255, 255, 0.03);
  transform: rotate(-12deg);
}
.cta-title { font-size: 26px; font-weight: 700; color: #fff; margin-bottom: 10px; position: relative; z-index: 1; }
.cta-desc { font-size: 15px; color: rgba(255, 255, 255, 0.75); margin-bottom: 28px; max-width: 480px; margin-left: auto; margin-right: auto; position: relative; z-index: 1; }
.cta-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; position: relative; z-index: 1; }

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.72);
  padding: 56px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}
.footer-brand .logo .logo-mark {
  background: var(--accent);
  color: #1F2E3A;
  box-shadow: none;
}
.footer-brand .logo .logo-text { color: #fff; }
.footer-brand .logo .logo-text em { color: var(--accent); }
.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.66);
  max-width: 300px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; font-size: 14px; }
.footer-col a { color: rgba(255, 255, 255, 0.66); transition: color 0.2s ease; }
.footer-col a:hover { color: var(--accent); }
.footer-contact li { color: rgba(255, 255, 255, 0.66); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.48);
  flex-wrap: wrap;
}
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: rgba(255, 255, 255, 0.48); transition: color 0.2s ease; }
.footer-links a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .path-grid { grid-template-columns: repeat(2, 1fr); }
  .path-grid::before { display: none; }
  .featured-grid { max-width: 720px; }
}
@media (max-width: 767px) {
  .container { padding: 0 20px; }
  .nav-list { padding: 8px 20px; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .nav-list::-webkit-scrollbar { display: none; }
  .nav-list.mobile-open { flex-direction: column; overflow: visible; }
  .hamburger { display: flex; }
  .header-top { height: 58px; }
  .logo-text { font-size: 18px; }
  .hero { padding: 48px 0 44px; }
  .hero-title { font-size: 30px; }
  .hero-desc { font-size: 15px; }
  .hero-actions .btn { width: 100%; max-width: 280px; }
  .section { padding: 52px 0; }
  .section-title { font-size: 24px; }
  .feature-item { flex-direction: row; align-items: flex-start; padding: 20px; gap: 14px; }
  .feature-num { font-size: 24px; min-width: 32px; }
  .featured-grid { grid-template-columns: 1fr; gap: 18px; }
  .guide-card-img { height: 140px; }
  .content-item { padding: 18px 12px; gap: 14px; }
  .content-icon { width: 38px; height: 38px; font-size: 17px; }
  .path-grid { grid-template-columns: 1fr; gap: 14px; }
  .path-item { padding: 20px; }
  .path-step { width: 48px; height: 48px; font-size: 16px; margin-bottom: 12px; }
  .cta-box { padding: 40px 24px; border-radius: 12px; }
  .cta-title { font-size: 22px; }
  .cta-actions .btn { width: 100%; max-width: 260px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; justify-content: center; text-align: center; }
  .search-panel .inner { padding: 0 20px; }
}