/* roulang page: index */
:root {
  --primary: #1E5AA8;
  --accent: #E8862E;
  --success: #0E9F8A;
  --bg: #F5F8FC;
  --surface: #FFFFFF;
  --text: #1E2A38;
  --muted: #64748B;
  --border: rgba(30, 42, 56, 0.08);
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-pill: 100px;
  --shadow: 0 4px 20px rgba(30, 42, 56, 0.06);
  --shadow-hover: 0 10px 30px rgba(30, 42, 56, 0.12);
  --space-section: 96px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .25s ease;
}
a:hover {
  color: var(--primary);
}
img {
  max-width: 100%;
  display: block;
}
button, input, textarea {
  font-family: inherit;
  outline: none;
}
.container {
  max-width: 1200px;
  padding-left: 20px;
  padding-right: 20px;
}
/* ============ Header 双层导航 ============ */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1030;
  box-shadow: 0 2px 12px rgba(30, 42, 56, 0.04);
}
.header-top {
  padding: 12px 0;
}
.header-top .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(30, 90, 168, 0.25);
}
.brand-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-primary {
  color: var(--primary);
}
.brand-secondary {
  color: #2D3A48;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  width: 250px;
  transition: border-color .25s, box-shadow .25s;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 90, 168, 0.15);
}
.search-box i {
  color: var(--primary);
  font-size: 14px;
  margin-right: 8px;
}
.search-box input {
  border: none;
  background: transparent;
  font-size: 14px;
  color: var(--text);
  width: 100%;
}
.search-box input::placeholder {
  color: var(--muted);
}
.btn-login {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  padding: 8px 22px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .25s, transform .2s, box-shadow .25s;
}
.btn-login:hover {
  background: #d9741f;
  transform: translateY(-1px);
  color: #fff;
  box-shadow: 0 6px 18px rgba(232, 134, 46, 0.28);
}
.btn-login:focus-visible {
  outline: 2px solid rgba(232, 134, 46, 0.5);
  outline-offset: 2px;
}
.mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
}
.header-nav {
  background: var(--surface);
  border-top: 1px solid rgba(30, 42, 56, 0.05);
}
.channel-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  padding: 6px 0;
  margin: 0;
}
.channel-nav li a {
  display: inline-block;
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  border-radius: var(--radius-pill);
  transition: background .25s, color .25s;
  white-space: nowrap;
}
.channel-nav li a:hover {
  background: rgba(30, 90, 168, 0.08);
  color: var(--primary);
}
.channel-nav li a.active {
  background: var(--primary);
  color: #fff;
}
.mobile-dropdown {
  display: none;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 10px 20px 16px;
}
.mobile-dropdown.show {
  display: block;
}
.mobile-dropdown a {
  display: block;
  padding: 10px 12px;
  color: var(--text);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
}
.mobile-dropdown a:hover {
  background: var(--bg);
  color: var(--primary);
}
.mobile-dropdown a.active {
  background: var(--primary);
  color: #fff;
}
/* ============ Hero ============ */
.hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding: 80px 0 100px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.85);
}
.hero .container {
  position: relative;
  z-index: 2;
}
.hero-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 56px;
  align-items: center;
}
.hero-content .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(14, 159, 138, 0.1);
  color: var(--success);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}
.hero-title {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  letter-spacing: 0.02em;
  margin-bottom: 18px;
}
.hero-title .highlight {
  color: var(--primary);
}
.hero-subtitle {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 28px;
}
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.btn-accent {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  padding: 12px 32px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background .25s, transform .2s, box-shadow .25s;
}
.btn-accent:hover {
  background: #d9741f;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 134, 46, 0.3);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-btn);
  padding: 12px 30px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background .25s, color .25s;
}
.btn-outline:hover {
  background: rgba(30, 90, 168, 0.08);
  color: var(--primary);
}
.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
}
.hero-trust span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-trust i {
  color: var(--success);
}
/* 登录面板 */
.login-panel {
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
  padding: 36px 34px;
  border: 1px solid rgba(30, 42, 56, 0.04);
}
.login-panel-header {
  text-align: center;
  margin-bottom: 24px;
}
.login-panel-header h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}
.login-panel-header p {
  font-size: 14px;
  color: var(--muted);
}
.login-panel .form-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 6px;
}
.login-panel .form-control {
  border-radius: var(--radius-btn);
  border: 1px solid rgba(30, 42, 56, 0.14);
  padding: 10px 14px;
  font-size: 15px;
  background: var(--bg);
  transition: border-color .25s, box-shadow .25s;
}
.login-panel .form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 90, 168, 0.15);
  background: #fff;
}
.login-panel .btn-login-panel {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  padding: 12px;
  font-size: 16px;
  font-weight: 600;
  margin-top: 8px;
  cursor: pointer;
  transition: background .25s, transform .2s;
}
.login-panel .btn-login-panel:hover {
  background: #d9741f;
  transform: translateY(-1px);
}
.login-panel-links {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  font-size: 14px;
}
.login-panel-links a {
  color: var(--muted);
}
.login-panel-links a:hover {
  color: var(--primary);
}
/* ============ Section 基础 ============ */
.section-padding {
  padding: var(--space-section) 0;
}
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.section-header .section-tag {
  display: inline-block;
  background: rgba(30, 90, 168, 0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
.section-header p {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.8;
}
/* ============ 服务区 2+1 ============ */
.service-section {
  background: var(--surface);
}
.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.service-card {
  background: var(--bg);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  border: 1px solid var(--border);
  transition: box-shadow .3s, transform .3s;
}
.service-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.service-card .icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.service-card .icon.green {
  background: var(--success);
}
.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}
.service-card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.service-card .text-link {
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.service-card .text-link i {
  transition: transform .25s;
}
.service-card .text-link:hover i {
  transform: translateX(4px);
}
.wide-card {
  grid-column: 1 / -1;
  background: var(--primary);
  border-radius: var(--radius-card);
  padding: 36px 40px;
  color: #fff;
  background-image: linear-gradient(135deg, #1E5AA8 0%, #2969bf 100%);
  position: relative;
  overflow: hidden;
}
.wide-card::after {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}
.wide-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
}
.steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
  z-index: 2;
}
.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step-item h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}
.step-item p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
}
/* ============ 优势数据 ============ */
.stats-section {
  background: #EFF4FA;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--success));
  opacity: 0.3;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
}
.stat-item .stat-num {
  font-size: 44px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.stat-item .stat-label {
  font-size: 14px;
  color: var(--muted);
  margin-top: 8px;
}
/* ============ 案例区 ============ */
.case-section {
  background: var(--surface);
}
.case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.case-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow .3s, transform .3s;
}
.case-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.case-card .cover {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg);
}
.case-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.case-card:hover .cover img {
  transform: scale(1.05);
}
.case-card .body {
  padding: 24px 28px 28px;
}
.case-card .body .badge {
  background: rgba(30, 90, 168, 0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}
.case-card .body h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}
.case-card .body p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}
/* ============ 方案区 Tab ============ */
.solution-section {
  background: var(--bg);
}
.solution-tabs {
  display: flex;
  justify-content: center;
  border-bottom: 2px solid var(--border);
  margin-bottom: 40px;
  gap: 8px;
}
.solution-tabs .nav-link {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 16px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 0;
  position: relative;
  transition: color .25s;
}
.solution-tabs .nav-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform .3s;
}
.solution-tabs .nav-link:hover {
  color: var(--primary);
}
.solution-tabs .nav-link.active {
  color: var(--primary);
  background: transparent;
}
.solution-tabs .nav-link.active::after {
  transform: scaleX(1);
}
.tab-panel-content {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 56px;
  align-items: center;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 40px;
  box-shadow: var(--shadow);
}
.tab-panel-content h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 16px;
}
.tab-panel-content .lead-text {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 20px;
}
.option-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.option-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 15px;
  color: var(--text);
}
.option-list li i {
  color: var(--success);
  width: 18px;
  text-align: center;
}
.tab-panel-content .image-wrap {
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--bg);
}
.tab-panel-content .image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
/* ============ 最新信息 ============ */
.latest-section {
  background: var(--surface);
}
.latest-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}
.latest-header h2 {
  font-size: 28px;
  font-weight: 700;
}
.latest-header .view-all {
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.latest-header .view-all i {
  transition: transform .25s;
}
.latest-header .view-all:hover i {
  transform: translateX(4px);
}
.content-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.content-card {
  display: flex;
  gap: 20px;
  background: var(--bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  padding: 20px;
  transition: box-shadow .3s, background .3s;
}
.content-card:hover {
  background: #fff;
  box-shadow: var(--shadow-hover);
}
.content-card .card-cover {
  width: 140px;
  height: 96px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg);
}
.content-card .card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.content-card .card-body {
  flex: 1;
  min-width: 0;
}
.content-card .card-body h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.content-card .card-body h3 a {
  color: var(--text);
}
.content-card .card-body h3 a:hover {
  color: var(--primary);
}
.content-card .card-body p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.content-card .card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
}
.content-card .card-meta .badge {
  background: rgba(30, 90, 168, 0.1);
  color: var(--primary);
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
}
.content-card .card-meta .text-link {
  color: var(--primary);
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
}
.content-card .card-meta .text-link i {
  transition: transform .25s;
}
.content-card .card-meta .text-link:hover i {
  transform: translateX(4px);
}
.empty-state {
  text-align: center;
  padding: 60px 24px;
  background: var(--bg);
  border-radius: var(--radius-card);
  border: 1px dashed var(--border);
  color: var(--muted);
}
.empty-state i {
  font-size: 32px;
  color: var(--muted);
  margin-bottom: 12px;
  opacity: 0.5;
}
/* ============ FAQ ============ */
.faq-section {
  background: var(--bg);
}
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}
.faq-container .accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-card) !important;
  margin-bottom: 14px;
  overflow: hidden;
  background: #fff;
}
.faq-container .accordion-header .accordion-button {
  padding: 16px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: #fff;
  box-shadow: none;
  border: none;
  position: relative;
  transition: color .25s;
}
.faq-container .accordion-header .accordion-button::after {
  background-image: none;
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  content: "\f078";
  font-size: 14px;
  color: var(--primary);
  transition: transform .3s;
}
.faq-container .accordion-header .accordion-button:not(.collapsed)::after {
  transform: rotate(180deg);
}
.faq-container .accordion-header .accordion-button:not(.collapsed) {
  color: var(--primary);
  background: #fff;
  box-shadow: inset 3px 0 0 var(--primary);
}
.faq-container .accordion-button:focus {
  box-shadow: none;
  border-color: var(--border);
}
.faq-container .accordion-button:hover {
  background: rgba(30, 90, 168, 0.03);
}
.faq-container .accordion-body {
  padding: 4px 24px 20px;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
}
/* ============ 联系 ============ */
.contact-section {
  background: var(--surface);
}
.contact-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
}
.contact-info-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.contact-info-item:last-child {
  border-bottom: none;
}
.contact-info-item .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(30, 90, 168, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-info-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}
.contact-info-item p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 0;
}
.contact-info-item a {
  color: var(--muted);
}
.contact-info-item a:hover {
  color: var(--primary);
}
.contact-form-wrap {
  background: var(--bg);
  border-radius: var(--radius-card);
  padding: 36px;
  border: 1px solid var(--border);
}
.contact-form-wrap .form-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}
.contact-form-wrap .form-control {
  border-radius: var(--radius-btn);
  border: 1px solid rgba(30, 42, 56, 0.14);
  padding: 10px 16px;
  font-size: 15px;
  background: #fff;
  transition: border-color .25s, box-shadow .25s;
}
.contact-form-wrap .form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 90, 168, 0.12);
}
.contact-form-wrap textarea.form-control {
  min-height: 120px;
  resize: vertical;
}
/* ============ 页脚 ============ */
.site-footer {
  background: #13253A;
  color: rgba(255, 255, 255, 0.85);
  padding-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 4fr 3fr 3fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .brand {
  margin-bottom: 16px;
}
.footer-brand .brand-primary {
  color: #fff;
}
.footer-brand .brand-secondary {
  color: rgba(255, 255, 255, 0.7);
}
.footer-brand .brand-icon {
  background: var(--accent);
  box-shadow: none;
}
.footer-brand p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 20px;
}
.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links ul li {
  margin-bottom: 10px;
}
.footer-links ul li a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 15px;
  transition: color .25s, padding-left .25s;
}
.footer-links ul li a:hover {
  color: #8fc4f0;
  padding-left: 4px;
}
.footer-contact p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact p i {
  width: 18px;
  color: var(--accent);
}
.footer-contact a {
  color: rgba(255, 255, 255, 0.65);
}
.footer-contact a:hover {
  color: #8fc4f0;
}
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}
/* ============ 响应式 ============ */
@media (max-width: 991px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero {
    padding: 60px 0 80px;
  }
  .hero-title {
    font-size: 34px;
  }
  .header-top .search-box {
    width: 180px;
  }
  .channel-nav {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .channel-nav::-webkit-scrollbar {
    display: none;
  }
  .channel-nav li a {
    padding: 8px 14px;
    font-size: 14px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .tab-panel-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .steps-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}
@media (max-width: 767px) {
  .section-padding {
    padding: 56px 0;
  }
  .mobile-toggle {
    display: inline-flex;
  }
  .header-right .search-box {
    display: none;
  }
  .btn-login {
    padding: 7px 14px;
    font-size: 13px;
  }
  .brand-name {
    font-size: 17px;
  }
  .brand-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
  .service-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .wide-card {
    padding: 28px 24px;
  }
  .case-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .solution-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .solution-tabs::-webkit-scrollbar {
    display: none;
  }
  .solution-tabs .nav-link {
    padding: 10px 18px;
    font-size: 14px;
    white-space: nowrap;
  }
  .tab-panel-content {
    padding: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .content-card {
    flex-direction: column;
    padding: 16px;
  }
  .content-card .card-cover {
    width: 100%;
    height: 180px;
  }
  .latest-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}
@media (max-width: 575px) {
  body {
    font-size: 15px;
  }
  .hero-title {
    font-size: 28px;
  }
  .hero {
    min-height: 80vh;
    padding: 48px 0 64px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .hero-cta {
    flex-direction: column;
  }
  .btn-accent,
  .btn-outline {
    width: 100%;
    justify-content: center;
  }
  .stat-item .stat-num {
    font-size: 34px;
  }
  .login-panel {
    padding: 28px 22px;
  }
  .contact-form-wrap {
    padding: 24px 20px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #1E5AA8;
  --accent: #E8862E;
  --success: #0E9F8A;
  --bg: #F5F8FC;
  --surface: #FFFFFF;
  --text: #1E2A38;
  --muted: #64748B;
  --border: rgba(30,42,56,0.08);
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-pill: 100px;
  --shadow: 0 4px 20px rgba(30,42,56,0.06);
  --shadow-hover: 0 10px 30px rgba(30,42,56,0.12);
  --space-section: 96px;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: #164a8a;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  padding: 10px 24px;
  border: none;
  transition: all .25s ease;
  cursor: pointer;
  line-height: 1.5;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: #d1731f;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(232,134,46,0.3);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(30,90,168,0.08);
  color: var(--primary);
}

.btn:focus-visible,
a:focus-visible {
  outline: 2px solid rgba(30,90,168,0.3);
  outline-offset: 2px;
}

/* ===== Header ===== */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 100;
}

.header-top {
  padding: 14px 0;
}

.header-top .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

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

.brand-icon {
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-primary {
  color: var(--primary);
}

.brand-secondary {
  color: var(--text);
}

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

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  width: 240px;
  border: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}

.search-box i {
  color: var(--primary);
  font-size: 14px;
  margin-right: 8px;
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  width: 100%;
  color: var(--text);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30,90,168,0.15);
}

.navbar-toggler {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 19px;
  cursor: pointer;
}

/* ===== Channel Nav ===== */
.header-nav {
  background: var(--surface);
  border-top: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 90;
}

.channel-nav {
  display: flex;
  list-style: none;
  gap: 4px;
  padding: 10px 0;
  margin: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.channel-nav li a {
  display: inline-block;
  padding: 8px 22px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  background: transparent;
  transition: all .25s ease;
  white-space: nowrap;
}

.channel-nav li a:hover {
  background: rgba(30,90,168,0.08);
  color: var(--primary);
}

.channel-nav li a.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

/* ===== Category Hero ===== */
.category-hero {
  background: linear-gradient(rgba(255,255,255,0.75), rgba(255,255,255,0.75)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding: 80px 0 70px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.category-hero .hero-badge {
  display: inline-block;
  background: rgba(30,90,168,0.12);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.category-hero h1 {
  font-size: 40px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
  line-height: 1.3;
  margin-bottom: 14px;
}

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

.category-hero .hero-desc {
  font-size: 16px;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 24px;
}

.hero-trust {
  display: flex;
  gap: 22px;
  font-size: 13px;
  color: var(--muted);
  flex-wrap: wrap;
}

.hero-trust i {
  color: var(--success);
  margin-right: 5px;
}

/* ===== Category Content ===== */
.category-content {
  padding: var(--space-section) 0;
}

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

.content-main {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.section-title-sm {
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  letter-spacing: 0.02em;
  position: relative;
  padding-left: 16px;
}

.section-title-sm::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: var(--primary);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 28px;
  padding-left: 16px;
}

/* ===== Article List Card ===== */
.article-list-card {
  display: flex;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  transition: box-shadow .3s ease, transform .2s ease;
  align-items: flex-start;
}

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

.article-list-card .thumb-wrap {
  flex-shrink: 0;
  width: 120px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.article-list-card .thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}

.article-list-card:hover .thumb-wrap img {
  transform: scale(1.05);
}

.article-list-card .card-body {
  flex: 1;
  min-width: 0;
}

.article-list-card .article-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s;
}

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

.article-list-card .article-excerpt {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 10px;
}

.article-list-card .card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  flex-wrap: wrap;
}

.article-list-card .card-meta .meta-time {
  white-space: nowrap;
}

.article-list-card .card-meta .pill {
  background: rgba(30,90,168,0.1);
  color: var(--primary);
  font-size: 12px;
  padding: 2px 12px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.article-list-card .card-meta .card-link {
  margin-left: auto;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap .2s;
  white-space: nowrap;
}

.article-list-card .card-meta .card-link:hover {
  gap: 8px;
}

/* ===== Sidebar ===== */
.content-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 26px;
  box-shadow: var(--shadow);
}

.sidebar-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.sidebar-card h3 i {
  color: var(--primary);
  margin-right: 8px;
}

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

.sidebar-links li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 14px;
  color: var(--text);
  transition: background .2s, color .2s;
  border: 1px solid transparent;
}

.sidebar-links li a i {
  color: var(--primary);
  font-size: 13px;
  width: 18px;
  text-align: center;
}

.sidebar-links li a:hover {
  background: rgba(30,90,168,0.06);
  color: var(--primary);
  border-color: rgba(30,90,168,0.1);
}

.sidebar-help {
  background: linear-gradient(135deg, var(--primary), #153d6f);
  border-radius: var(--radius-card);
  padding: 28px;
  color: #fff;
  border: none;
}

.sidebar-help h3 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 10px;
}

.sidebar-help p {
  font-size: 14px;
  opacity: 0.85;
  line-height: 1.7;
  margin-bottom: 18px;
}

.sidebar-help .btn-outline-light {
  border-color: rgba(255,255,255,0.6);
  color: #fff;
  background: transparent;
  border-radius: var(--radius-btn);
  padding: 8px 20px;
  font-size: 14px;
}

.sidebar-help .btn-outline-light:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}

/* ===== FAQ ===== */
.faq-section {
  padding: var(--space-section) 0;
  background: var(--surface);
}

.accordion {
  max-width: 800px;
  margin: 0 auto;
  --bs-accordion-border-color: var(--border);
  --bs-accordion-border-radius: var(--radius-card);
  --bs-accordion-inner-border-radius: var(--radius-card);
  --bs-accordion-bg: var(--surface);
  --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(30,90,168,0.12);
}

.accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-card) !important;
  margin-bottom: 14px;
  overflow: hidden;
}

.accordion-button {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  padding: 18px 24px;
  min-height: 48px;
  background: var(--surface);
  border: none;
}

.accordion-button:not(.collapsed) {
  background: rgba(30,90,168,0.04);
  color: var(--primary);
  box-shadow: inset 0 -1px 0 var(--border), inset 3px 0 0 var(--primary);
}

.accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(30,90,168,0.12);
}

.accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%231E5AA8' viewBox='0 0 16 16'%3E%3Cpath d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3E%3C/svg%3E");
  transition: transform .3s ease;
}

.accordion-button:not(.collapsed)::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23E8862E' viewBox='0 0 16 16'%3E%3Cpath d='M4 8a.5.5 0 0 1 .5-.5h7a.5.5 0 0 1 0 1h-7A.5.5 0 0 1 4 8z'/%3E%3C/svg%3E");
}

.accordion-body {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.8;
  padding: 16px 24px 20px;
  background: var(--surface);
  border-top: none;
}

/* ===== CTA ===== */
.cta-section {
  padding: 72px 0;
  background: var(--bg);
}

.cta-card {
  background: linear-gradient(135deg, var(--primary) 0%, #174a8f 100%);
  border-radius: 20px;
  padding: 64px 40px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -20px;
  width: 180px;
  height: 180px;
  border: 2px solid rgba(255,255,255,0.15);
  border-radius: 50%;
}

.cta-card::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: 20px;
  width: 140px;
  height: 140px;
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: 50%;
}

.cta-card h2 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.cta-card p {
  font-size: 16px;
  opacity: 0.85;
  margin-bottom: 28px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.cta-card .btn-cta {
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  padding: 14px 42px;
  border-radius: 10px;
  border: none;
  font-weight: 600;
  transition: all .25s ease;
}

.cta-card .btn-cta:hover {
  background: #d1731f;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232,134,46,0.35);
}

.cta-note {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 20px;
  font-size: 13px;
  opacity: 0.8;
  flex-wrap: wrap;
}

.cta-note i {
  margin-right: 5px;
}

/* ===== Footer ===== */
.site-footer {
  background: #13253A;
  color: rgba(255,255,255,0.85);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-brand .brand-icon {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

.footer-brand .brand-primary {
  color: #fff;
}

.footer-brand .brand-secondary {
  color: rgba(255,255,255,0.7);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  margin-top: 14px;
}

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

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

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

.footer-links ul li a {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  transition: color .2s;
}

.footer-links ul li a:hover {
  color: #7fb0f0;
}

.footer-contact p {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 10px;
}

.footer-contact p i {
  margin-right: 8px;
  color: rgba(255,255,255,0.4);
}

.footer-contact p a {
  color: rgba(255,255,255,0.65);
}

.footer-contact p a:hover {
  color: #7fb0f0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

/* ===== Responsive ===== */
@media (min-width: 992px) {
  .category-grid {
    grid-template-columns: 1fr 320px;
  }
}

@media (max-width: 991px) {
  .category-hero {
    padding: 60px 0;
  }
  .category-hero h1 {
    font-size: 32px;
  }
  .category-grid {
    grid-template-columns: 1fr;
  }
  .content-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 767px) {
  .header-top .container {
    flex-wrap: wrap;
  }
  .search-box {
    display: none;
  }
  .navbar-toggler {
    display: flex;
  }
  .header-actions .btn-accent {
    display: none;
  }
  .content-sidebar {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .category-hero {
    padding: 48px 0;
  }
  .category-hero h1 {
    font-size: 26px;
  }
  .cta-card {
    padding: 40px 24px;
  }
  .cta-card h2 {
    font-size: 24px;
  }
  .article-list-card {
    flex-direction: column;
  }
  .article-list-card .thumb-wrap {
    width: 100%;
    height: 160px;
  }
  .article-list-card .card-meta .card-link {
    margin-left: 0;
  }
  .hero-trust {
    gap: 12px;
    font-size: 12px;
  }
  :root {
    --space-section: 56px;
  }
  body {
    font-size: 15px;
  }
}

@media (max-width: 575px) {
  .category-hero h1 {
    font-size: 24px;
  }
  .category-hero .hero-desc {
    font-size: 14px;
  }
  .btn {
    padding: 8px 18px;
    font-size: 14px;
  }
  .section-title-sm {
    font-size: 20px;
  }
  .article-list-card .card-meta {
    gap: 6px;
  }
  .article-list-card .card-meta .meta-time {
    font-size: 12px;
  }
  .accordion-button {
    font-size: 15px;
    padding: 16px 18px;
  }
}

@media (min-width: 768px) {
  .navbar-toggler {
    display: none !important;
  }
}

/* roulang page: article */
:root {
      --primary: #1E5AA8;
      --accent: #E8862E;
      --accent-dark: #d97726;
      --success: #0E9F8A;
      --bg: #F5F8FC;
      --surface: #FFFFFF;
      --text: #1E2A38;
      --muted: #64748B;
      --border: rgba(30,42,56,0.08);
      --radius-card: 14px;
      --radius-btn: 8px;
      --radius-pill: 100px;
      --shadow: 0 4px 20px rgba(30,42,56,0.06);
      --shadow-hover: 0 10px 30px rgba(30,42,56,0.12);
      --space-section: 96px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      font-size: 16px;
      line-height: 1.8;
      color: var(--text);
      background: var(--bg);
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

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

    .section-padding {
      padding: var(--space-section) 0;
    }

    .btn-accent {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      background: var(--accent);
      color: #fff !important;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 15px;
      border: none;
      cursor: pointer;
      transition: all 0.25s ease;
      text-decoration: none;
      white-space: nowrap;
    }

    .btn-accent:hover {
      background: var(--accent-dark);
      transform: translateY(-1px);
      color: #fff !important;
      box-shadow: 0 6px 18px rgba(232,134,46,0.25);
    }

    .btn-accent:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
      box-shadow: 0 0 0 4px rgba(232,134,46,0.25);
    }

    .btn-outline-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      background: transparent;
      color: var(--primary) !important;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 15px;
      border: 1px solid var(--primary);
      cursor: pointer;
      transition: all 0.25s ease;
      text-decoration: none;
      white-space: nowrap;
    }

    .btn-outline-primary:hover {
      background: rgba(30,90,168,0.08);
      color: var(--primary) !important;
      border-color: var(--primary);
      transform: translateY(-1px);
    }

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

    .btn-primary-soft {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      background: rgba(30,90,168,0.1);
      color: var(--primary) !important;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 15px;
      border: none;
      cursor: pointer;
      transition: all 0.25s ease;
      text-decoration: none;
      white-space: nowrap;
    }

    .btn-primary-soft:hover {
      background: rgba(30,90,168,0.18);
      color: var(--primary) !important;
    }

    .badge-pill {
      display: inline-flex;
      align-items: center;
      background: rgba(30,90,168,0.1);
      color: var(--primary);
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.02em;
    }

    .badge-pill-success {
      display: inline-flex;
      align-items: center;
      background: rgba(14,159,138,0.12);
      color: var(--success);
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 600;
    }

    /* ===== Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: var(--surface);
      box-shadow: 0 2px 16px rgba(30,42,56,0.07);
    }

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

    .header-top-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 72px;
      gap: 16px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      flex-shrink: 0;
    }

    .brand-icon {
      width: 40px;
      height: 40px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #fff;
      border-radius: 10px;
      font-size: 18px;
      transform: skew(-6deg);
    }

    .brand-icon i {
      transform: skew(6deg);
    }

    .brand-name {
      font-size: 22px;
      font-weight: 700;
      letter-spacing: 0.02em;
      line-height: 1.2;
      white-space: nowrap;
    }

    .brand-primary {
      color: var(--primary);
    }

    .brand-secondary {
      color: #1E2A38;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-shrink: 0;
    }

    .header-search {
      position: relative;
    }

    .header-search input {
      width: 240px;
      border-radius: var(--radius-pill);
      border: 1px solid var(--border);
      padding: 8px 16px 8px 38px;
      font-size: 14px;
      background: var(--bg);
      transition: all 0.25s ease;
      outline: none;
    }

    .header-search input:focus {
      border-color: var(--primary);
      background: var(--surface);
      box-shadow: 0 0 0 3px rgba(30,90,168,0.18);
    }

    .header-search .search-icon {
      position: absolute;
      left: 14px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--muted);
      font-size: 14px;
      pointer-events: none;
    }

    .hamburger {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--border);
      background: var(--surface);
      border-radius: 8px;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      cursor: pointer;
      transition: all 0.2s ease;
    }

    .hamburger:hover {
      background: var(--bg);
    }

    .hamburger span {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--text);
      border-radius: 2px;
      transition: all 0.3s ease;
    }

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

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

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

    .header-nav {
      background: #EFF4FA;
      border-bottom: 1px solid var(--border);
    }

    .channel-nav {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 6px 0;
      gap: 4px;
      overflow-x: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }

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

    .channel-nav a {
      display: block;
      padding: 8px 18px;
      border-radius: var(--radius-pill);
      color: var(--muted);
      font-weight: 500;
      font-size: 14px;
      white-space: nowrap;
      text-decoration: none;
      transition: all 0.2s ease;
      letter-spacing: 0.02em;
    }

    .channel-nav a:hover {
      background: rgba(30,90,168,0.08);
      color: var(--primary);
    }

    .channel-nav a.active {
      background: var(--primary);
      color: #fff;
      font-weight: 600;
    }

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

    /* ===== Article Hero ===== */
    .article-hero {
      background: linear-gradient(180deg, rgba(255,255,255,0.92) 0%, rgba(245,248,252,0.96) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      padding: 56px 0 44px;
      border-bottom: 1px solid var(--border);
      position: relative;
    }

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

    .breadcrumb-nav a {
      color: var(--muted);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 5px;
      transition: color 0.2s ease;
    }

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

    .breadcrumb-sep {
      color: #c0c8d4;
      font-size: 11px;
    }

    .breadcrumb-current {
      color: var(--primary);
      font-weight: 600;
    }

    .article-heading {
      max-width: 820px;
    }

    .article-heading .category-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(30,90,168,0.1);
      color: var(--primary);
      padding: 5px 16px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 14px;
    }

    .article-heading h1 {
      font-size: 36px;
      font-weight: 600;
      line-height: 1.35;
      color: var(--text);
      letter-spacing: 0.02em;
      margin: 0 0 18px;
    }

    .article-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 18px;
      color: var(--muted);
      font-size: 14px;
    }

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

    .article-meta i {
      color: var(--primary);
      font-size: 13px;
    }

    /* ===== Article Content ===== */
    .article-section {
      padding: 56px 0 24px;
    }

    .article-content-wrap {
      max-width: 760px;
      margin: 0 auto;
    }

    .article-content {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 48px;
      box-shadow: var(--shadow);
    }

    .article-content h1,
    .article-content h2 {
      font-weight: 600;
      color: var(--text);
      margin-top: 40px;
      margin-bottom: 16px;
      letter-spacing: 0.02em;
    }

    .article-content h2 {
      font-size: 24px;
      line-height: 1.4;
      padding-bottom: 8px;
      border-bottom: 2px solid var(--border);
    }

    .article-content h3 {
      font-size: 20px;
      font-weight: 600;
      color: var(--text);
      margin-top: 32px;
      margin-bottom: 14px;
    }

    .article-content p {
      font-size: 17px;
      line-height: 1.9;
      color: #33415C;
      margin-bottom: 28px;
    }

    .article-content img {
      max-width: 100%;
      border-radius: 12px;
      margin: 24px 0;
      border: 1px solid var(--border);
    }

    .article-content figure {
      margin: 24px 0;
    }

    .article-content figure img {
      margin-bottom: 10px;
    }

    .article-content figcaption {
      font-size: 14px;
      color: var(--muted);
      text-align: center;
      margin-bottom: 24px;
    }

    .article-content blockquote {
      border-left: 3px solid var(--primary);
      background: #F0F4F9;
      padding: 16px 24px;
      border-radius: 0 8px 8px 0;
      margin: 28px 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.8;
    }

    .article-content ul,
    .article-content ol {
      margin-bottom: 28px;
      padding-left: 24px;
      color: #33415C;
      font-size: 17px;
      line-height: 1.9;
    }

    .article-content li {
      margin-bottom: 6px;
    }

    .article-content table {
      width: 100%;
      border-collapse: collapse;
      margin: 28px 0;
      background: var(--surface);
      border-radius: 8px;
      overflow: hidden;
      font-size: 15px;
    }

    .article-content table th,
    .article-content table td {
      padding: 12px 16px;
      border: 1px solid var(--border);
      text-align: left;
    }

    .article-content table th {
      background: #F0F4F9;
      font-weight: 600;
      color: var(--text);
    }

    .article-content code {
      background: #F0F4F9;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 14px;
      color: var(--primary);
      font-family: "SFMono-Regular", Consolas, monospace;
    }

    .article-content pre {
      background: #1E2A38;
      color: #D1D5DB;
      padding: 20px 24px;
      border-radius: 8px;
      overflow-x: auto;
      font-size: 14px;
      line-height: 1.7;
      margin: 28px 0;
    }

    .article-content pre code {
      background: transparent;
      color: inherit;
      padding: 0;
    }

    .article-content a {
      color: var(--primary);
      text-decoration: underline;
      text-underline-offset: 3px;
    }

    .article-content a:hover {
      color: var(--accent);
    }

    .article-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 36px;
      padding-top: 24px;
      border-top: 1px solid var(--border);
    }

    .article-tags .tag-pill {
      display: inline-flex;
      align-items: center;
      background: var(--bg);
      border: 1px solid var(--border);
      color: var(--muted);
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      transition: all 0.2s ease;
      text-decoration: none;
    }

    .article-tags .tag-pill:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(30,90,168,0.06);
    }

    .not-found {
      text-align: center;
      padding: 64px 24px;
      color: var(--muted);
    }

    .not-found i {
      font-size: 48px;
      color: #c0c8d4;
      margin-bottom: 16px;
      display: block;
    }

    .not-found p {
      font-size: 18px;
      font-weight: 500;
      margin-bottom: 20px;
    }

    /* ===== Article Pagination ===== */
    .article-pagination-section {
      padding: 32px 0 16px;
    }

    .article-pagination {
      max-width: 760px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }

    .article-pagination .prev-link,
    .article-pagination .next-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--muted);
      text-decoration: none;
      background: var(--surface);
      border: 1px solid var(--border);
      padding: 10px 18px;
      border-radius: var(--radius-btn);
      transition: all 0.25s ease;
      min-width: 180px;
    }

    .article-pagination .prev-link:hover,
    .article-pagination .next-link:hover {
      border-color: var(--primary);
      color: var(--primary);
      box-shadow: var(--shadow);
    }

    .article-pagination .next-link {
      justify-content: flex-end;
      text-align: right;
      margin-left: auto;
    }

    .btn-back-list {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: transparent;
      border: 1px solid var(--border);
      color: var(--muted) !important;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-size: 14px;
      font-weight: 500;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    .btn-back-list:hover {
      border-color: var(--primary);
      color: var(--primary) !important;
      background: rgba(30,90,168,0.04);
    }

    /* ===== Related Section ===== */
    .related-section {
      padding: 56px 0 var(--space-section);
    }

    .section-heading {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 32px;
    }

    .section-heading h2 {
      font-size: 28px;
      font-weight: 600;
      color: var(--text);
      margin: 0;
      letter-spacing: 0.02em;
      position: relative;
      padding-left: 16px;
    }

    .section-heading h2::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 4px;
      height: 24px;
      background: var(--accent);
      border-radius: 4px;
    }

    .section-heading a {
      font-size: 14px;
      color: var(--muted);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: color 0.2s ease;
    }

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

    .related-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      height: 100%;
      box-shadow: var(--shadow);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      text-decoration: none;
    }

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

    .related-card .card-img {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: #E9EFF6;
    }

    .related-card .card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .related-card:hover .card-img img {
      transform: scale(1.05);
    }

    .related-card .card-body {
      padding: 20px 20px 22px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .related-card .card-body h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 8px;
      line-height: 1.4;
      transition: color 0.2s ease;
    }

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

    .related-card .card-body p {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.7;
      margin-bottom: 16px;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .related-card .card-meta {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--muted);
    }

    .related-card .card-meta span {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 64px 0;
      background: linear-gradient(120deg, #13253A 0%, #1E3A5F 100%);
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      right: -60px;
      top: -60px;
      width: 240px;
      height: 240px;
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 50%;
    }

    .cta-section::after {
      content: '';
      position: absolute;
      right: 20px;
      bottom: -80px;
      width: 180px;
      height: 180px;
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 50%;
    }

    .cta-inner {
      position: relative;
      z-index: 1;
      text-align: center;
      max-width: 640px;
      margin: 0 auto;
    }

    .cta-inner h2 {
      font-size: 32px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 12px;
      letter-spacing: 0.02em;
    }

    .cta-inner p {
      font-size: 16px;
      color: rgba(255,255,255,0.7);
      margin-bottom: 28px;
      line-height: 1.8;
    }

    .cta-buttons {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 14px;
      flex-wrap: wrap;
    }

    .cta-buttons .btn-accent {
      background: var(--accent);
    }

    .cta-buttons .btn-accent:hover {
      background: #f09040;
    }

    .cta-buttons .btn-cta-ghost {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: transparent;
      border: 1px solid rgba(255,255,255,0.4);
      color: #fff !important;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 500;
      font-size: 15px;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    .cta-buttons .btn-cta-ghost:hover {
      border-color: #fff;
      background: rgba(255,255,255,0.1);
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #13253A;
      color: rgba(255,255,255,0.75);
      padding: 64px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1.2fr;
      gap: 48px;
      padding-bottom: 40px;
    }

    .footer-brand .brand {
      margin-bottom: 16px;
    }

    .footer-brand .brand-icon {
      background: rgba(255,255,255,0.12);
      color: #fff;
    }

    .footer-brand .brand-primary {
      color: #fff;
    }

    .footer-brand .brand-secondary {
      color: rgba(255,255,255,0.65);
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255,255,255,0.6);
      margin: 0;
      max-width: 320px;
    }

    .footer-links h4,
    .footer-contact h4 {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
      letter-spacing: 0.02em;
    }

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

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

    .footer-links a {
      color: rgba(255,255,255,0.6);
      text-decoration: none;
      font-size: 14px;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .footer-links a:hover {
      color: #8CC3FF;
      padding-left: 4px;
    }

    .footer-contact p {
      font-size: 14px;
      color: rgba(255,255,255,0.6);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .footer-contact i {
      color: var(--accent);
      width: 16px;
      text-align: center;
    }

    .footer-contact a {
      color: rgba(255,255,255,0.6);
      text-decoration: none;
    }

    .footer-contact a:hover {
      color: #8CC3FF;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding: 20px 0;
      text-align: center;
      font-size: 13px;
      color: rgba(255,255,255,0.4);
    }

    .footer-bottom .mx-2 {
      margin: 0 8px;
      color: rgba(255,255,255,0.2);
    }

    /* ===== Responsive ===== */
    @media (max-width: 991px) {
      :root {
        --space-section: 64px;
      }

      .header-search {
        display: none !important;
      }

      .hamburger {
        display: inline-flex;
      }

      .header-nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--surface);
        box-shadow: 0 16px 32px rgba(30,42,56,0.12);
        border-bottom: 1px solid var(--border);
        z-index: 999;
      }

      .header-nav.open {
        display: block;
      }

      .channel-nav {
        flex-direction: column;
        align-items: stretch;
        padding: 12px 0;
        overflow: visible;
      }

      .channel-nav a {
        border-radius: 8px;
        font-size: 15px;
        padding: 12px 20px;
        border-left: 3px solid transparent;
      }

      .channel-nav a:hover {
        border-left-color: var(--primary);
      }

      .channel-nav a.active {
        border-left-color: var(--accent);
      }

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

    @media (max-width: 767px) {
      :root {
        --space-section: 56px;
      }

      body {
        font-size: 15px;
      }

      .container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .header-top-inner {
        min-height: 64px;
      }

      .header-nav {
        top: 64px;
      }

      .brand-name {
        font-size: 19px;
      }

      .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 16px;
      }

      .header-actions .btn-accent {
        padding: 8px 16px;
        font-size: 14px;
      }

      .article-hero {
        padding: 36px 0 28px;
      }

      .article-heading h1 {
        font-size: 26px;
        line-height: 1.4;
      }

      .article-meta {
        gap: 12px;
        font-size: 13px;
        flex-direction: column;
        align-items: flex-start;
      }

      .article-section {
        padding: 32px 0 16px;
      }

      .article-content {
        padding: 24px 20px;
        border-radius: 10px;
      }

      .article-content p {
        font-size: 16px;
        line-height: 1.85;
      }

      .article-content h2 {
        font-size: 20px;
        margin-top: 32px;
      }

      .article-content h3 {
        font-size: 18px;
      }

      .article-pagination {
        flex-direction: column;
        align-items: stretch;
      }

      .article-pagination .prev-link,
      .article-pagination .next-link {
        min-width: 0;
        justify-content: center;
        text-align: center;
      }

      .article-pagination .next-link {
        margin-left: 0;
      }

      .btn-back-list {
        order: -1;
        justify-content: center;
        width: 100%;
      }

      .section-heading h2 {
        font-size: 22px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-bottom: 24px;
      }

      .cta-section {
        padding: 48px 0;
      }

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

      .cta-buttons {
        flex-direction: column;
      }

      .cta-buttons .btn-accent,
      .cta-buttons .btn-cta-ghost {
        width: 100%;
      }
    }

    @media (max-width: 575px) {
      .brand-name {
        font-size: 17px;
      }

      .brand-icon {
        width: 32px;
        height: 32px;
        font-size: 14px;
      }

      .header-actions .btn-accent {
        padding: 7px 12px;
        font-size: 13px;
      }

      .article-heading h1 {
        font-size: 22px;
      }

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

      .breadcrumb-nav {
        font-size: 13px;
      }
    }

/* roulang page: category2 */
:root {
      --primary: #1E5AA8;
      --accent: #E8862E;
      --success: #0E9F8A;
      --bg: #F5F8FC;
      --surface: #FFFFFF;
      --text: #1E2A38;
      --muted: #64748B;
      --border: rgba(30, 42, 56, 0.08);
      --radius-card: 14px;
      --radius-btn: 8px;
      --radius-pill: 100px;
      --shadow: 0 4px 20px rgba(30, 42, 56, 0.06);
      --shadow-hover: 0 10px 30px rgba(30, 42, 56, 0.12);
      --space-section: 96px;
      --dark: #13253A;
    }

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

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      font-size: 16px;
      line-height: 1.8;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.25s ease;
    }

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

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

    .container {
      max-width: 1200px;
      padding-left: 20px;
      padding-right: 20px;
    }

    .section-block {
      padding: var(--space-section) 0;
    }

    .section-head {
      margin-bottom: 32px;
    }

    .section-head h2 {
      font-size: 28px;
      font-weight: 600;
      letter-spacing: 0.02em;
      color: var(--text);
      margin-bottom: 8px;
    }

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

    .text-primary-custom {
      color: var(--primary);
    }

    /* ===== 双重导航 ===== */
    .site-header {
      position: relative;
      background: var(--surface);
      z-index: 100;
    }

    .header-top {
      background: #fff;
      border-bottom: 1px solid var(--border);
      box-shadow: 0 1px 8px rgba(30, 42, 56, 0.04);
    }

    .header-top-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 20px;
      flex-wrap: nowrap;
    }

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

    .brand-icon {
      width: 40px;
      height: 40px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #fff;
      font-size: 18px;
      border-radius: 10px;
      transform: skewX(-6deg);
    }

    .brand-icon i {
      transform: skewX(6deg);
    }

    .brand-name {
      font-size: 22px;
      font-weight: 700;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .brand-primary {
      color: var(--primary);
    }

    .brand-secondary {
      color: var(--text);
      font-weight: 600;
    }

    .header-search {
      flex: 1;
      max-width: 380px;
      min-width: 160px;
    }

    .search-form {
      display: flex;
      align-items: center;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-pill);
      overflow: hidden;
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
    }

    .search-form:focus-within {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(30, 90, 168, 0.15);
    }

    .search-form input {
      flex: 1;
      border: none;
      outline: none;
      background: transparent;
      padding: 8px 16px;
      font-size: 14px;
      color: var(--text);
    }

    .search-form input::placeholder {
      color: var(--muted);
    }

    .search-form button {
      border: none;
      background: transparent;
      color: var(--primary);
      padding: 8px 16px;
      cursor: pointer;
      font-size: 15px;
    }

    .btn-login-top {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent);
      color: #fff;
      border: none;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      font-weight: 500;
      font-size: 15px;
      white-space: nowrap;
      transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
    }

    .btn-login-top:hover {
      background: #d97726;
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(232, 134, 46, 0.3);
    }

    .header-nav {
      background: #fff;
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 72px;
      z-index: 90;
    }

    .channel-nav {
      list-style: none;
      display: flex;
      align-items: center;
      gap: 4px;
      margin: 0;
      padding: 10px 0;
      overflow-x: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }

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

    .channel-nav li {
      flex-shrink: 0;
    }

    .channel-nav a {
      display: block;
      padding: 8px 20px;
      border-radius: var(--radius-pill);
      font-size: 15px;
      font-weight: 500;
      color: var(--muted);
      background: transparent;
      transition: all 0.25s ease;
    }

    .channel-nav a:hover {
      background: rgba(30, 90, 168, 0.08);
      color: var(--primary);
    }

    .channel-nav a.active {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 12px rgba(30, 90, 168, 0.25);
    }

    /* ===== 分类横幅 ===== */
    .category-hero {
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      position: relative;
      padding: 80px 0 88px;
    }

    .category-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(255, 255, 255, 0.75);
    }

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

    .breadcrumb-wrap {
      margin-bottom: 16px;
    }

    .breadcrumb-wrap .breadcrumb {
      margin: 0;
      font-size: 13px;
      color: var(--muted);
    }

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

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

    .breadcrumb-wrap .breadcrumb .active {
      color: var(--primary);
      font-weight: 500;
    }

    .breadcrumb-wrap .breadcrumb-item + .breadcrumb-item::before {
      content: '>';
      color: var(--muted);
      opacity: 0.6;
    }

    .category-hero h1 {
      font-size: 40px;
      font-weight: 600;
      letter-spacing: 0.02em;
      color: var(--text);
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .category-hero .hero-lead {
      font-size: 17px;
      color: var(--muted);
      max-width: 680px;
      line-height: 1.7;
      margin: 0;
    }

    .hero-pills {
      margin-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(30, 90, 168, 0.1);
      color: var(--primary);
      padding: 6px 16px;
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 500;
    }

    /* ===== 登录准备步骤 ===== */
    .login-steps {
      background: var(--surface);
    }

    .step-card {
      background: var(--surface);
      border: 1px solid rgba(30, 42, 56, 0.04);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow);
      padding: 28px 24px;
      height: 100%;
      transition: box-shadow 0.3s ease, transform 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .step-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 3px;
      height: 42px;
      background: var(--primary);
      border-radius: 0 0 3px 0;
    }

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

    .step-number {
      font-size: 42px;
      font-weight: 700;
      color: var(--primary);
      opacity: 0.18;
      line-height: 1;
      margin-bottom: 14px;
    }

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

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

    /* ===== 内容两栏区 ===== */
    .content-area {
      background: var(--bg);
    }

    .list-card {
      display: flex;
      gap: 20px;
      background: var(--surface);
      border: 1px solid rgba(30, 42, 56, 0.04);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow);
      padding: 16px;
      margin-bottom: 16px;
      transition: box-shadow 0.3s ease, transform 0.3s ease;
    }

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

    .list-card .card-cover {
      width: 120px;
      height: 80px;
      object-fit: cover;
      border-radius: 10px;
      flex-shrink: 0;
    }

    .list-card .card-body {
      flex: 1;
      min-width: 0;
      padding: 0;
    }

    .list-card .card-body h3 {
      margin: 0 0 4px;
      font-size: 16px;
      font-weight: 600;
      line-height: 1.45;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .list-card .card-body h3 a {
      color: var(--text);
      transition: color 0.25s ease;
    }

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

    .list-card .card-body p {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.6;
      margin: 0 0 8px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .card-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 13px;
      color: var(--muted);
      flex-wrap: wrap;
    }

    .card-meta .meta-time {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .card-meta .meta-tag {
      display: inline-flex;
      align-items: center;
      padding: 2px 10px;
      background: rgba(30, 90, 168, 0.1);
      color: var(--primary);
      border-radius: var(--radius-pill);
      font-size: 12px;
      font-weight: 500;
    }

    .card-meta .meta-link {
      margin-left: auto;
      color: var(--primary);
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: gap 0.25s ease;
    }

    .card-meta .meta-link:hover {
      gap: 8px;
    }

    .sub-category-card {
      background: var(--surface);
      border: 1px solid rgba(30, 42, 56, 0.04);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow);
      padding: 24px;
    }

    .sub-category-card h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border);
    }

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

    .sub-category-list li {
      border-bottom: 1px dashed var(--border);
    }

    .sub-category-list li:last-child {
      border-bottom: none;
    }

    .sub-category-list a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 0;
      font-size: 15px;
      color: var(--text);
      transition: color 0.25s ease, padding-left 0.25s ease;
    }

    .sub-category-list a i {
      font-size: 12px;
      color: var(--muted);
      transition: transform 0.25s ease, color 0.25s ease;
    }

    .sub-category-list a:hover {
      color: var(--primary);
      padding-left: 6px;
    }

    .sub-category-list a:hover i {
      color: var(--primary);
      transform: translateX(3px);
    }

    .sub-category-tip {
      margin-top: 20px;
      background: rgba(14, 159, 138, 0.08);
      border-left: 3px solid var(--success);
      border-radius: 8px;
      padding: 12px 14px;
      font-size: 13px;
      color: var(--muted);
      line-height: 1.6;
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--surface);
    }

    .faq-accordion {
      max-width: 820px;
      margin: 0 auto;
      --bs-accordion-border-color: var(--border);
      --bs-accordion-border-radius: var(--radius-card);
      --bs-accordion-inner-border-radius: var(--radius-card);
      --bs-accordion-bg: var(--surface);
      --bs-accordion-active-bg: #fff;
      --bs-accordion-active-color: var(--primary);
      --bs-accordion-btn-focus-border-color: rgba(30, 90, 168, 0.4);
      --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(30, 90, 168, 0.15);
    }

    .faq-accordion .accordion-item {
      border: 1px solid var(--border);
      border-radius: var(--radius-card) !important;
      margin-bottom: 14px;
      box-shadow: 0 2px 8px rgba(30, 42, 56, 0.03);
      overflow: hidden;
    }

    .faq-accordion .accordion-button {
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      min-height: 52px;
      padding: 14px 20px;
      background: var(--surface);
      box-shadow: none;
      transition: color 0.25s ease, background 0.25s ease;
      position: relative;
    }

    .faq-accordion .accordion-button::after {
      background-image: none;
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      font-size: 14px;
      color: var(--muted);
      transition: transform 0.3s ease, color 0.3s ease;
      width: auto;
      height: auto;
    }

    .faq-accordion .accordion-button:not(.collapsed) {
      background: rgba(30, 90, 168, 0.04);
      color: var(--primary);
      box-shadow: none;
      border-left: 3px solid var(--primary);
    }

    .faq-accordion .accordion-button:not(.collapsed)::after {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-accordion .accordion-button:focus {
      outline: none;
      box-shadow: 0 0 0 3px rgba(30, 90, 168, 0.15);
    }

    .faq-accordion .accordion-body {
      font-size: 15px;
      color: var(--muted);
      line-height: 1.8;
      padding: 16px 24px 20px;
      background: rgba(245, 248, 252, 0.5);
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--dark);
      position: relative;
      overflow: hidden;
      padding: 72px 0;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      width: 360px;
      height: 360px;
      right: -120px;
      top: -120px;
      border-radius: 50%;
      background: rgba(30, 90, 168, 0.25);
      filter: blur(80px);
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 680px;
      margin: 0 auto;
    }

    .cta-inner h2 {
      color: #fff;
      font-size: 30px;
      font-weight: 600;
      margin-bottom: 12px;
      letter-spacing: 0.02em;
    }

    .cta-inner p {
      color: rgba(255, 255, 255, 0.72);
      font-size: 16px;
      margin-bottom: 28px;
      line-height: 1.7;
    }

    .cta-buttons {
      display: flex;
      justify-content: center;
      gap: 14px;
      flex-wrap: wrap;
    }

    .btn-accent {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent);
      color: #fff;
      border: none;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 500;
      font-size: 15px;
      transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
    }

    .btn-accent:hover {
      background: #d97726;
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(232, 134, 46, 0.35);
    }

    .btn-outline-light {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.55);
      padding: 11px 26px;
      border-radius: var(--radius-btn);
      font-weight: 500;
      font-size: 15px;
      transition: all 0.25s ease;
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
      border-color: #fff;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--dark);
      color: rgba(255, 255, 255, 0.85);
      padding: 64px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1.2fr;
      gap: 48px;
      padding-bottom: 40px;
    }

    .footer-brand .brand {
      margin-bottom: 16px;
    }

    .footer-brand .brand-icon {
      background: rgba(30, 90, 168, 0.9);
    }

    .footer-brand .brand-primary {
      color: #fff;
    }

    .footer-brand .brand-secondary {
      color: rgba(255, 255, 255, 0.85);
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.6);
      margin: 12px 0 0;
      max-width: 320px;
    }

    .footer-links h4,
    .footer-contact h4 {
      color: #fff;
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 20px;
      letter-spacing: 0.02em;
    }

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

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

    .footer-links a {
      color: rgba(255, 255, 255, 0.65);
      font-size: 14px;
      transition: color 0.25s ease, padding-left 0.25s ease;
      display: inline-block;
    }

    .footer-links a:hover {
      color: #fff;
      padding-left: 4px;
    }

    .footer-contact p {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.65);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .footer-contact i {
      color: var(--accent);
      width: 16px;
      text-align: center;
    }

    .footer-contact a {
      color: rgba(255, 255, 255, 0.65);
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 20px 0;
      text-align: center;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
    }

    .footer-bottom .mx-2 {
      opacity: 0.6;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 991px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }

      .footer-brand {
        grid-column: span 2;
      }

      .header-search {
        max-width: 280px;
      }
    }

    @media (max-width: 767px) {
      .section-block {
        padding: 56px 0;
      }

      .header-top-inner {
        height: 62px;
        gap: 10px;
      }

      .brand-icon {
        width: 34px;
        height: 34px;
        font-size: 15px;
      }

      .brand-name {
        font-size: 18px;
      }

      .header-search {
        display: none;
      }

      .btn-login-top {
        padding: 8px 16px;
        font-size: 14px;
      }

      .header-nav {
        top: 62px;
      }

      .channel-nav {
        padding: 8px 0;
      }

      .channel-nav a {
        padding: 7px 16px;
        font-size: 14px;
      }

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

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

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

      .list-card {
        flex-direction: column;
        gap: 12px;
      }

      .list-card .card-cover {
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 8;
      }

      .step-card {
        margin-bottom: 16px;
      }

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

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

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

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

    @media (max-width: 575px) {
      body {
        font-size: 15px;
      }

      .category-hero h1 {
        font-size: 24px;
      }

      .section-head h2 {
        font-size: 22px;
      }

      .brand-name {
        font-size: 16px;
      }

      .btn-login-top {
        padding: 7px 14px;
        font-size: 13px;
      }

      .header-top-inner {
        gap: 6px;
      }

      .channel-nav a {
        padding: 6px 14px;
        font-size: 13px;
      }

      .list-card .card-body h3 {
        font-size: 15px;
      }

      .faq-accordion .accordion-button {
        font-size: 15px;
        padding: 12px 16px;
      }

      .faq-accordion .accordion-body {
        font-size: 14px;
        padding: 14px 16px;
      }
    }