/* roulang page: index */
:root {
  --bs-primary: #2B6EE2;
  --bs-primary-hover: #1D4FC4;
  --bs-primary-light: #E8F1FE;
  --bs-accent: #0F9F8F;
  --bs-gold: #E8A33D;
  --bg-body: #F7F9FC;
  --bg-card: #FFFFFF;
  --text-main: #1E293B;
  --text-sub: #64748B;
  --text-weak: #94A3B8;
  --border-color: #E2E8F0;
  --footer-bg: #0F172A;
  --footer-text: #94A3B8;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --radius-modal: 24px;
  --shadow-1: 0 2px 8px rgba(30,64,175,0.06);
  --shadow-2: 0 8px 30px rgba(30,64,175,0.10);
  --shadow-3: 0 16px 40px rgba(30,64,175,0.14);
  --section-space: 84px;
  --container-w: 1280px;

  --bs-link-color: var(--bs-primary);
  --bs-link-hover-color: var(--bs-primary-hover);
  --bs-btn-primary-bg: var(--bs-primary);
  --bs-btn-primary-border: var(--bs-primary);
  --bs-btn-primary-hover-bg: var(--bs-primary-hover);
  --bs-btn-primary-hover-border: var(--bs-primary-hover);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--bs-primary);
  text-decoration: none;
  transition: color .25s ease;
}

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

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

ul,
ol {
  list-style: none;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: 100%;
  line-height: 1.15;
}

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

/* ===== 通用按钮 ===== */
.btn-main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 30px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: #fff;
  background: var(--bs-primary);
  border: 1px solid var(--bs-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all .3s ease;
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-main:focus {
  outline: 2px solid rgba(43,110,226,.4);
  outline-offset: 2px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 30px;
  font-size: 16px;
  font-weight: 600;
  color: var(--bs-primary);
  background: transparent;
  border: 1.5px solid var(--bs-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all .3s ease;
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-outline:focus {
  outline: 2px solid rgba(43,110,226,.4);
  outline-offset: 2px;
}

.btn-block {
  width: 100%;
}

/* ===== 标签 ===== */
.badge-cat {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--bs-primary);
  background: var(--bs-primary-light);
  border-radius: 6px;
  line-height: 1.5;
}

/* ===== 区块标题 ===== */
.section-header {
  margin-bottom: 48px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--bs-primary);
  background: var(--bs-primary-light);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  letter-spacing: .5px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 12px;
  position: relative;
  padding-left: 16px;
}

.section-header h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 4px;
  background: var(--bs-primary);
}

.section-header p {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 560px;
  margin-bottom: 0;
}

/* ===== 导航栏 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #fff;
  border-bottom: 1px solid var(--border-color);
  transition: box-shadow .3s ease, background .3s ease;
}

.site-header.header-scrolled {
  background: rgba(255,255,255,.95);
  box-shadow: var(--shadow-3);
}

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

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

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

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bs-primary);
  color: #fff;
  border-radius: 10px;
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: .5px;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-actions .btn-main {
  padding: 9px 22px;
  font-size: 15px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  cursor: pointer;
  gap: 5px;
  transition: background .25s ease;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}

.nav-toggle:hover {
  background: var(--bs-primary-light);
}

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

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

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

.header-channels {
  border-top: 1px solid var(--border-color);
  background: #fff;
  padding: 8px 0;
}

.channel-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 2px 0;
}

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

.channel-link {
  display: inline-flex;
  align-items: center;
  padding: 7px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  background: transparent;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  transition: all .25s ease;
}

.channel-link:hover {
  background: var(--bs-primary-light);
  color: var(--bs-primary);
}

.channel-link.active {
  background: var(--bs-primary-light);
  color: var(--bs-primary);
  font-weight: 600;
  border-color: transparent;
  box-shadow: inset 0 -2px 0 var(--bs-primary);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 96px 0 80px;
  background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,.72);
}

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

.hero-inner {
  display: flex;
  align-items: center;
  gap: 56px;
}

.hero-content {
  flex: 1;
}

.hero-content h1 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: .5px;
}

.hero-sub {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-sub);
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.trust-item svg {
  width: 20px;
  height: 20px;
  color: var(--bs-accent);
  flex-shrink: 0;
}

.hero-image {
  flex: 0 0 420px;
}

.hero-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  object-fit: cover;
}

/* ===== 方案卡片区 ===== */
.solutions-section {
  padding: var(--section-space) 0;
  background: var(--bg-body);
}

.solution-flow {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px 0 0;
}

.solution-flow::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #D7E6FB;
  transform: translateX(-50%);
}

.solution-item {
  width: 50%;
  position: relative;
  padding: 0 48px 48px 0;
}

.solution-item:nth-child(odd) {
  align-self: flex-start;
}

.solution-item:nth-child(even) {
  align-self: flex-end;
  padding: 0 0 48px 48px;
}

.solution-item:last-child {
  padding-bottom: 0;
}

.solution-num {
  position: absolute;
  top: 16px;
  right: -26px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--bs-primary);
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  box-shadow: 0 4px 14px rgba(43,110,226,.25);
}

.solution-item:nth-child(even) .solution-num {
  right: auto;
  left: -26px;
}

.solution-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  padding: 32px;
  transition: all .35s ease;
}

.solution-card:hover {
  box-shadow: var(--shadow-2);
  transform: translateY(-4px);
}

.solution-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--bs-primary-light);
  color: var(--bs-primary);
  margin-bottom: 20px;
}

.solution-icon svg {
  width: 24px;
  height: 24px;
}

.solution-card h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.solution-card p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-sub);
  margin-bottom: 18px;
}

.solution-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--bs-primary);
  text-decoration: none;
  transition: gap .25s ease, color .25s ease;
}

.solution-link:hover {
  color: var(--bs-primary-hover);
  gap: 10px;
}

/* ===== 成功数据区 ===== */
.stats-section {
  padding: 64px 0;
  background: var(--bs-primary-light);
}

.stats-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.stat-item {
  flex: 1 1 200px;
  text-align: center;
  padding: 24px 16px;
  position: relative;
}

.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  bottom: 20%;
  width: 1px;
  background: #D7E6FB;
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--bs-accent);
  margin-bottom: 10px;
}

.stat-label {
  font-size: 15px;
  color: var(--text-sub);
}

/* ===== 最新资讯区 ===== */
.news-section {
  padding: var(--section-space) 0;
  background: var(--bg-body);
}

.news-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}

.news-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--bs-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.news-more:hover {
  color: var(--bs-primary-hover);
  gap: 10px;
}

.news-layout {
  display: flex;
  gap: 32px;
}

.featured-post {
  flex: 0 0 46%;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow .3s ease;
}

.featured-post:hover {
  box-shadow: var(--shadow-2);
}

.featured-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bs-primary-light);
}

.featured-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}

.featured-post:hover .featured-thumb img {
  transform: scale(1.03);
}

.featured-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.featured-body .badge-cat {
  align-self: flex-start;
  margin-bottom: 12px;
}

.featured-body h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
}

.featured-body h3 a {
  color: var(--text-main);
  text-decoration: none;
}

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

.featured-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.featured-body .post-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.post-time {
  font-size: 13px;
  color: var(--text-weak);
}

.read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--bs-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.read-more:hover {
  color: var(--bs-primary-hover);
}

.news-side-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.news-side-item {
  display: block;
  text-decoration: none;
  padding: 4px 10px;
  border-radius: var(--radius-md);
  border-left: 3px solid transparent;
  transition: all .3s ease;
}

.news-side-item:hover {
  border-left-color: var(--bs-primary);
  background: var(--bs-primary-light);
}

.news-side-item:hover h4 {
  color: var(--bs-primary);
}

.side-item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}

.side-item-top .badge-cat {
  font-size: 11px;
  padding: 3px 10px;
}

.side-time {
  font-size: 12px;
  color: var(--text-weak);
}

.news-side-item h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 4px;
  transition: color .25s ease;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-side-item p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 空态 */
.empty-state {
  width: 100%;
  padding: 60px 40px;
  text-align: center;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.empty-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  color: var(--text-weak);
  opacity: .6;
}

.empty-icon svg {
  width: 100%;
  height: 100%;
}

.empty-state p {
  font-size: 15px;
  color: var(--text-sub);
  margin: 0;
}

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

.faq-layout {
  display: flex;
  gap: 64px;
}

.faq-intro {
  flex: 0 0 300px;
}

.faq-intro h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  position: relative;
  padding-left: 16px;
}

.faq-intro h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 4px;
  background: var(--bs-primary);
}

.faq-intro p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 0;
}

.faq-accordion {
  flex: 1;
}

.faq-accordion .accordion-item {
  border: none;
  border-bottom: 1px solid var(--border-color);
  background: transparent;
  border-radius: 0 !important;
}

.faq-accordion .accordion-item:first-child {
  border-top: 1px solid var(--border-color);
}

.faq-accordion .accordion-header {
  position: relative;
}

.faq-accordion .accordion-button {
  position: relative;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  background: transparent;
  padding: 22px 44px 22px 12px;
  text-align: left;
  border: none;
  box-shadow: none;
  transition: all .3s ease;
}

.faq-accordion .accordion-button::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) scaleY(.3);
  width: 3px;
  height: 60%;
  border-radius: 3px;
  background: var(--bs-primary);
  opacity: 0;
  transition: all .3s ease;
}

.faq-accordion .accordion-button:not(.collapsed) {
  color: var(--bs-primary);
  background: transparent;
  box-shadow: none;
}

.faq-accordion .accordion-button:not(.collapsed)::before {
  opacity: 1;
  transform: translateY(-50%) scaleY(1);
}

.faq-accordion .accordion-button::after {
  background-image: none;
  width: 20px;
  height: 20px;
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%) rotate(0deg);
  border-right: 2px solid var(--text-weak);
  border-bottom: 2px solid var(--text-weak);
  transition: transform .3s ease, border-color .3s ease;
}

.faq-accordion .accordion-button:not(.collapsed)::after {
  transform: translateY(-50%) rotate(45deg);
  border-color: var(--bs-primary);
}

.faq-accordion .accordion-button:focus {
  box-shadow: none;
  outline: 2px solid rgba(43,110,226,.3);
  outline-offset: -2px;
  border-radius: 8px;
}

.faq-accordion .accordion-body {
  padding: 0 12px 22px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ===== CTA区 ===== */
.cta-section {
  padding: 72px 0;
  background: var(--bs-primary-light);
  text-align: center;
}

.cta-section h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.cta-section p {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 560px;
  margin: 0 auto 32px;
}

/* ===== 隐私说明区 ===== */
.privacy-section {
  padding: 48px 0;
  background: var(--bg-body);
}

.privacy-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
}

.privacy-item {
  flex: 1 1 260px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.privacy-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--bg-card);
  color: var(--bs-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-1);
}

.privacy-icon svg {
  width: 18px;
  height: 18px;
}

.privacy-item h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.privacy-item p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-weak);
  margin: 0;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding-top: 56px;
  font-size: 14px;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(148,163,184,.15);
}

.footer-brand {
  flex: 1 1 280px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  margin-bottom: 16px;
}

.footer-logo .logo-icon {
  width: 34px;
  height: 34px;
  font-size: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 300px;
  margin-bottom: 0;
}

.footer-links {
  flex: 1 1 160px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links ul,
.footer-contact ul {
  padding: 0;
  margin: 0;
}

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

.footer-links a {
  color: var(--footer-text);
  text-decoration: none;
  transition: color .25s ease;
}

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

.footer-contact {
  flex: 1 1 220px;
}

.footer-contact li {
  font-style: normal;
  color: var(--footer-text);
  line-height: 1.6;
}

.footer-about {
  padding: 24px 0;
  border-bottom: 1px solid rgba(148,163,184,.15);
}

.footer-about p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--footer-text);
  max-width: 880px;
  margin: 0;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 0;
  font-size: 13px;
  color: var(--footer-text);
}

.footer-bottom a {
  color: var(--footer-text);
  text-decoration: none;
}

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

/* ===== 表单弹层 ===== */
.modal-custom .modal-content {
  border: none;
  border-radius: var(--radius-modal);
  box-shadow: var(--shadow-3);
  padding: 32px;
}

.modal-custom .modal-body {
  padding: 0;
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-body);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-sub);
  transition: all .25s ease;
  z-index: 2;
}

.modal-close-btn:hover {
  background: var(--bs-primary-light);
  color: var(--bs-primary);
}

.modal-close-btn svg {
  width: 16px;
  height: 16px;
}

.modal-title-main {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.modal-subtitle {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 28px;
  line-height: 1.6;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

.form-group .form-control,
.form-group .form-select {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-main);
  background: var(--bg-body);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all .25s ease;
}

.form-group .form-control:focus,
.form-group .form-select:focus {
  background: #fff;
  border-color: var(--bs-primary);
  box-shadow: 0 0 0 3px rgba(43,110,226,.12);
  outline: none;
}

.form-group .form-control.is-valid,
.form-group .form-select.is-valid {
  border-color: var(--bs-accent);
}

.form-group .form-control.is-invalid,
.form-group .form-select.is-invalid {
  border-color: #DC3545;
}

.privacy-line {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-weak);
  text-align: center;
  line-height: 1.6;
}

.privacy-line a {
  color: var(--bs-primary);
  text-decoration: underline;
}

/* ===== 响应式 ===== */
@media (min-width: 1200px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (min-width: 992px) and (max-width: 1199px) {
  :root {
    --section-space: 64px;
  }

  .hero {
    padding: 72px 0 64px;
  }

  .hero-image {
    flex-basis: 360px;
  }

  .solution-flow::before {
    left: 50%;
  }

  .solution-item {
    padding-right: 36px;
  }

  .solution-item:nth-child(even) {
    padding-left: 36px;
  }

  .solution-num {
    right: -22px;
  }

  .solution-item:nth-child(even) .solution-num {
    left: -22px;
  }
}

@media (max-width: 991.98px) {
  .header-channels {
    overflow: hidden;
  }

  .channel-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero-inner {
    flex-direction: column;
    gap: 40px;
  }

  .hero-image {
    flex: 0 0 auto;
    width: 100%;
    max-width: 560px;
  }

  .solution-flow::before {
    left: 26px;
  }

  .solution-item,
  .solution-item:nth-child(even) {
    width: calc(100% - 56px);
    align-self: flex-end;
    padding: 0 0 40px 0;
    margin-left: auto;
    margin-right: 0;
  }

  .solution-item {
    margin-left: auto;
  }

  .solution-num,
  .solution-item:nth-child(even) .solution-num {
    left: -56px;
    right: auto;
  }

  .news-layout {
    flex-direction: column;
  }

  .featured-post {
    flex: 0 0 auto;
  }

  .faq-layout {
    flex-direction: column;
    gap: 40px;
  }

  .faq-intro {
    flex: 0 0 auto;
  }
}

@media (max-width: 767.98px) {
  :root {
    --section-space: 48px;
  }

  body {
    font-size: 15px;
  }

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

  .header-top {
    padding: 10px 0;
  }

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

  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 15px;
    border-radius: 8px;
  }

  .header-actions .btn-main {
    padding: 8px 14px;
    font-size: 13px;
  }

  .nav-toggle {
    display: flex;
    width: 36px;
    height: 36px;
  }

  .hero {
    padding: 56px 0 48px;
  }

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

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

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

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

  .hero-trust {
    gap: 16px;
  }

  .trust-item {
    font-size: 13px;
  }

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

  .section-header p {
    font-size: 14px;
  }

  .stats-grid {
    gap: 16px;
  }

  .stat-item {
    flex: 1 1 calc(50% - 16px);
  }

  .stat-item + .stat-item::before {
    display: none;
  }

  .stat-number {
    font-size: 36px;
  }

  .news-header {
    align-items: center;
  }

  .featured-post {
    flex-direction: column;
  }

  .featured-thumb {
    width: 100%;
  }

  .featured-body {
    padding: 20px;
  }

  .featured-body h3 {
    font-size: 18px;
  }

  .news-side-list {
    margin-top: 8px;
  }

  .faq-intro h2 {
    font-size: 24px;
  }

  .faq-accordion .accordion-button {
    font-size: 15px;
    padding: 18px 40px 18px 10px;
  }

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

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

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

  .cta-section p {
    font-size: 15px;
  }

  .cta-section .btn-main {
    width: 100%;
  }

  .privacy-grid {
    flex-direction: column;
    gap: 20px;
  }

  .footer-top {
    flex-direction: column;
    gap: 32px;
  }

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

  .footer-about p {
    font-size: 12px;
  }

  .modal-custom .modal-content {
    padding: 24px 20px;
    border-radius: 16px;
  }

  .modal-title-main {
    font-size: 20px;
  }

  .form-group .form-control,
  .form-group .form-select {
    padding: 11px 14px;
    font-size: 14px;
  }
}

@media (max-width: 575.98px) {
  .solution-item,
  .solution-item:nth-child(even) {
    width: 100%;
    padding-left: 0;
    padding-right: 0;
    align-self: flex-start;
  }

  .solution-flow::before {
    display: none;
  }

  .solution-card {
    padding: 24px 20px;
  }

  .solution-num,
  .solution-item:nth-child(even) .solution-num {
    position: static;
    display: inline-flex;
    margin-bottom: 14px;
    border-radius: 0 12px 12px 0;
    width: auto;
    height: auto;
    padding: 6px 16px;
    font-size: 15px;
  }

  .hero-image {
    max-width: 100%;
  }
}

/* roulang page: category1 */
:root {
  --bs-primary: #2B6EE2;
  --bs-primary-hover: #1D4FC4;
  --bs-primary-light: #E8F1FE;
  --bs-accent: #0F9F8F;
  --bs-gold: #E8A33D;
  --bs-body-bg: #F7F9FC;
  --bs-card-bg: #FFFFFF;
  --bs-text: #1E293B;
  --bs-text-secondary: #64748B;
  --bs-text-muted: #94A3B8;
  --bs-border: #E2E8F0;
  --bs-footer-bg: #0F172A;
  --bs-footer-text: #94A3B8;
  --bs-radius-lg: 20px;
  --bs-radius-md: 12px;
  --bs-radius-sm: 10px;
  --bs-shadow-1: 0 2px 8px rgba(30,64,175,0.06);
  --bs-shadow-2: 0 8px 30px rgba(30,64,175,0.10);
  --bs-shadow-3: 0 16px 40px rgba(30,64,175,0.14);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bs-body-bg);
  color: var(--bs-text);
  font-size: 16px;
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; transition: all .3s ease; }
ul { list-style: none; margin: 0; padding: 0; }
.container { max-width: 1280px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

.btn-main {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bs-primary); color: #fff;
  border: 1px solid var(--bs-primary);
  border-radius: var(--bs-radius-sm);
  padding: 10px 24px;
  font-size: 15px; font-weight: 600;
  transition: all .3s ease;
  text-decoration: none; cursor: pointer;
}
.btn-main:hover { background: var(--bs-primary-hover); border-color: var(--bs-primary-hover); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(43,110,226,.25); }
.btn-main:focus { outline: 2px solid rgba(43,110,226,.4); outline-offset: 2px; }
.btn-outline {
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; color: var(--bs-primary);
  border: 1px solid var(--bs-primary);
  border-radius: var(--bs-radius-sm);
  padding: 10px 24px;
  font-size: 15px; font-weight: 600;
  transition: all .3s ease;
  text-decoration: none; cursor: pointer;
}
.btn-outline:hover { background: var(--bs-primary-light); color: var(--bs-primary); transform: translateY(-2px); }
.btn-outline:focus { outline: 2px solid rgba(43,110,226,.4); outline-offset: 2px; }

.site-header { position: sticky; top: 0; z-index: 1050; background: #fff; border-bottom: 1px solid var(--bs-border); transition: box-shadow .3s ease, background .3s ease; }
.site-header.scrolled { background: rgba(255,255,255,.92); box-shadow: var(--bs-shadow-3); }
.header-top-inner { display: flex; justify-content: space-between; align-items: center; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--bs-primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700;
}
.logo-text { font-size: 20px; font-weight: 700; color: var(--bs-text); letter-spacing: .5px; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 42px; height: 42px; border: 1px solid var(--bs-border); border-radius: 10px; background: #fff; cursor: pointer; padding: 10px; }
.nav-toggle span { display: block; height: 2px; background: var(--bs-text); border-radius: 2px; transition: all .3s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.header-channels { border-top: 1px solid var(--bs-border); background: #fff; }
.channel-nav { display: flex; align-items: center; gap: 8px; padding: 12px 0; }
.channel-link {
  display: inline-block; padding: 8px 20px;
  border-radius: 999px; font-size: 15px; font-weight: 500;
  color: var(--bs-text); white-space: nowrap;
  transition: all .25s ease; position: relative;
}
.channel-link:hover { background: var(--bs-primary-light); color: var(--bs-primary); }
.channel-link.active { background: var(--bs-primary-light); color: var(--bs-primary); font-weight: 600; }
.channel-link.active::after { content: ''; position: absolute; left: 20px; right: 20px; bottom: 0; height: 2px; background: var(--bs-primary); border-radius: 2px; }

.category-hero { position: relative; padding: 80px 0 72px; background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat; }
.category-hero::before { content: ''; position: absolute; inset: 0; background: rgba(255,255,255,.72); }
.category-hero .container { position: relative; z-index: 1; }
.breadcrumb-custom { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--bs-text-secondary); margin-bottom: 20px; }
.breadcrumb-custom a { color: var(--bs-text-secondary); }
.breadcrumb-custom a:hover { color: var(--bs-primary); }
.breadcrumb-custom .separator { color: var(--bs-text-muted); }
.breadcrumb-custom .current { color: var(--bs-primary); font-weight: 600; }
.category-hero h1 { font-size: 38px; font-weight: 700; line-height: 1.2; color: var(--bs-text); margin: 0 0 16px; letter-spacing: .5px; }
.category-hero p { font-size: 16px; color: var(--bs-text-secondary); max-width: 640px; line-height: 1.8; margin: 0; }

.section-block { padding: 80px 0; }
.section-head { margin-bottom: 48px; }
.section-label { display: inline-block; font-size: 13px; font-weight: 600; color: var(--bs-primary); background: var(--bs-primary-light); border-radius: 999px; padding: 4px 14px; margin-bottom: 12px; }
.section-title { font-size: 30px; font-weight: 700; color: var(--bs-text); margin: 0 0 12px; line-height: 1.3; letter-spacing: .5px; }
.section-desc { font-size: 16px; color: var(--bs-text-secondary); max-width: 560px; line-height: 1.7; }

.value-section { background: #fff; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.value-card { background: var(--bs-card-bg); border: 1px solid var(--bs-border); border-radius: var(--bs-radius-lg); padding: 36px 32px; transition: all .3s ease; }
.value-card:hover { box-shadow: var(--bs-shadow-2); transform: translateY(-4px); border-color: #C9DCFC; }
.value-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--bs-primary-light); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; color: var(--bs-primary); font-size: 24px; font-weight: 700; }
.value-card h3 { font-size: 20px; font-weight: 600; color: var(--bs-text); margin: 0 0 10px; }
.value-card p { font-size: 15px; color: var(--bs-text-secondary); line-height: 1.75; margin: 0; }

.news-section { background: var(--bs-body-bg); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
  background: var(--bs-card-bg); border-radius: var(--bs-radius-lg);
  overflow: hidden; border: 1px solid var(--bs-border);
  transition: all .3s ease; display: flex; flex-direction: column;
}
.news-card:hover { box-shadow: var(--bs-shadow-2); transform: translateY(-4px); border-color: #C9DCFC; }
.news-card-img { width: 100%; aspect-ratio: 16 / 9; overflow: hidden; position: relative; background: var(--bs-primary-light); }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.news-card:hover .news-card-img img { transform: scale(1.03); }
.news-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.badge-cat { display: inline-block; background: var(--bs-primary-light); color: var(--bs-primary); font-size: 12px; font-weight: 600; border-radius: 6px; padding: 3px 10px; }
.news-date { font-size: 13px; color: var(--bs-text-muted); }
.news-card h3 { font-size: 18px; font-weight: 600; color: var(--bs-text); line-height: 1.45; margin: 0 0 10px; transition: color .3s ease; }
.news-card:hover h3 { color: var(--bs-primary); }
.news-card p { font-size: 14px; color: var(--bs-text-secondary); line-height: 1.7; margin: 0 0 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-footer { margin-top: auto; display: flex; align-items: center; justify-content: space-between; }
.news-read { font-size: 14px; font-weight: 500; color: var(--bs-primary); }
.news-read:hover { color: var(--bs-primary-hover); }
.news-views { font-size: 13px; color: var(--bs-text-muted); }

.stats-section { background: var(--bs-primary-light); padding: 72px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-item { text-align: center; padding: 16px 24px; position: relative; }
.stat-item + .stat-item { border-left: 1px solid #D7E6FB; }
.stat-num { font-size: 52px; font-weight: 700; color: var(--bs-accent); line-height: 1.2; letter-spacing: -1px; }
.stat-label { font-size: 15px; color: var(--bs-text-secondary); margin-top: 6px; font-weight: 500; }

.process-section { background: #fff; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; counter-reset: process; }
.process-item { text-align: center; padding: 32px 24px; border-radius: var(--bs-radius-lg); background: var(--bs-body-bg); border: 1px solid var(--bs-border); transition: all .3s ease; position: relative; }
.process-item:hover { box-shadow: var(--bs-shadow-2); transform: translateY(-4px); }
.process-num { font-size: 36px; font-weight: 700; color: var(--bs-primary); margin-bottom: 12px; line-height: 1; }
.process-item h3 { font-size: 18px; font-weight: 600; color: var(--bs-text); margin: 0 0 10px; }
.process-item p { font-size: 14px; color: var(--bs-text-secondary); line-height: 1.7; margin: 0; }

.faq-section { background: var(--bs-body-bg); }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.accordion-item { background: transparent; border: none; border-bottom: 1px solid var(--bs-border); border-radius: 0; }
.accordion-item:first-child { border-top: 1px solid var(--bs-border); }
.accordion-header { border: none; }
.accordion-button {
  background: transparent; color: var(--bs-text);
  font-size: 17px; font-weight: 600; padding: 24px 48px 24px 20px;
  border: none; box-shadow: none; position: relative;
  transition: color .3s ease;
}
.accordion-button::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 3px; height: 0; background: var(--bs-primary); border-radius: 3px; transition: height .3s ease; }
.accordion-button:not(.collapsed) { color: var(--bs-primary); background: transparent; box-shadow: none; }
.accordion-button:not(.collapsed)::before { height: 24px; }
.accordion-button:focus { box-shadow: none; border: none; }
.accordion-button::after {
  background-image: none; width: auto; height: auto;
  content: ''; position: absolute; right: 16px; top: 50%;
  transform: translateY(-50%) rotate(0deg);
  border-right: 2px solid var(--bs-primary); border-bottom: 2px solid var(--bs-primary);
  width: 10px; height: 10px; transition: transform .3s ease;
}
.accordion-button:not(.collapsed)::after { transform: translateY(-50%) rotate(45deg); }
.accordion-button.collapsed::after { transform: translateY(-50%) rotate(-45deg); }
.accordion-body { padding: 0 20px 24px; font-size: 15px; color: var(--bs-text-secondary); line-height: 1.75; }

.cta-section { background: var(--bs-footer-bg); padding: 72px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: 0; right: 0; width: 300px; height: 300px; background: rgba(43,110,226,.15); border-radius: 50%; transform: translate(100px, -100px); }
.cta-inner { position: relative; z-index: 1; text-align: center; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { color: #fff; font-size: 30px; font-weight: 700; margin: 0 0 12px; }
.cta-inner p { color: #94A3B8; font-size: 16px; margin: 0 0 28px; }
.cta-inner .btn-main { background: var(--bs-primary); border-color: var(--bs-primary); }
.cta-inner .btn-main:hover { background: var(--bs-primary-hover); border-color: var(--bs-primary-hover); }

.site-footer { background: var(--bs-footer-bg); color: var(--bs-footer-text); padding: 64px 0 0; font-size: 14px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(148,163,184,.15); }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.footer-logo:hover { color: #fff; }
.footer-brand p { color: var(--bs-footer-text); line-height: 1.7; margin: 0; }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul li a { color: var(--bs-footer-text); }
.footer-links ul li a:hover { color: var(--bs-primary); }
.footer-contact ul li { margin-bottom: 10px; }
.footer-about { padding: 24px 0; border-bottom: 1px solid rgba(148,163,184,.15); }
.footer-about p { margin: 0; color: var(--bs-footer-text); line-height: 1.7; max-width: 860px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; flex-wrap: wrap; gap: 8px; }

.modal-content { border: none; border-radius: 24px; box-shadow: var(--bs-shadow-3); }
.modal-body { padding: 32px; position: relative; }
.modal-close-btn {
  position: absolute; top: 16px; right: 16px;
  width: 36px; height: 36px; border-radius: 50%;
  background: #F1F5F9; border: none; color: var(--bs-text);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; cursor: pointer; transition: all .3s ease;
  z-index: 2;
}
.modal-close-btn:hover { background: var(--bs-primary-light); color: var(--bs-primary); }
.modal-title-area { margin-bottom: 24px; }
.modal-title-area h3 { font-size: 22px; font-weight: 700; color: var(--bs-text); margin: 0 0 8px; }
.modal-title-area p { font-size: 14px; color: var(--bs-text-secondary); margin: 0; }
.form-label { font-size: 14px; font-weight: 600; color: var(--bs-text); margin-bottom: 6px; }
.form-control {
  border: 1px solid var(--bs-border); border-radius: var(--bs-radius-md);
  padding: 11px 16px; font-size: 15px; color: var(--bs-text);
  transition: border-color .3s ease, box-shadow .3s ease;
}
.form-control:focus { border-color: var(--bs-primary); box-shadow: 0 0 0 3px rgba(43,110,226,.12); }
.form-control.is-invalid { border-color: #dc3545; box-shadow: none; }
.form-control.is-valid { border-color: var(--bs-accent); box-shadow: none; }
.form-select {
  border: 1px solid var(--bs-border); border-radius: var(--bs-radius-md);
  padding: 11px 16px; font-size: 15px; color: var(--bs-text);
  transition: border-color .3s ease, box-shadow .3s ease;
}
.form-select:focus { border-color: var(--bs-primary); box-shadow: 0 0 0 3px rgba(43,110,226,.12); }
.privacy-note { font-size: 12px; color: var(--bs-text-muted); margin-top: 14px; line-height: 1.6; }
.privacy-note a { color: var(--bs-primary); }

@media (max-width: 1199.98px) {
  .section-block { padding: 64px 0; }
  .category-hero { padding: 64px 0 56px; }
  .value-grid, .news-grid { gap: 24px; }
}
@media (max-width: 991.98px) {
  .nav-toggle { display: flex; }
  .header-channels { overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none; }
  .header-channels::-webkit-scrollbar { display: none; }
  .channel-nav { display: flex; flex-wrap: nowrap; padding: 12px 24px; gap: 8px; }
  .channel-link { flex-shrink: 0; }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 32px 0; }
  .stat-item:nth-child(3) { border-left: none; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767.98px) {
  body { font-size: 15px; }
  .container { padding-left: 16px; padding-right: 16px; }
  .logo-text { font-size: 17px; }
  .header-top-inner { height: 64px; }
  .btn-main { padding: 8px 16px; font-size: 14px; }
  .category-hero { padding: 48px 0 40px; }
  .category-hero h1 { font-size: 28px; }
  .category-hero p { font-size: 15px; }
  .section-block { padding: 48px 0; }
  .section-title { font-size: 24px; }
  .section-desc { font-size: 15px; }
  .value-grid { grid-template-columns: 1fr; }
  .value-card { padding: 24px; }
  .news-grid { gap: 20px; }
  .news-card-body { padding: 20px; }
  .stats-section { padding: 48px 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-num { font-size: 40px; }
  .stat-item { padding: 12px; }
  .stat-item:nth-child(2) { border-left: none; }
  .process-grid { grid-template-columns: 1fr; gap: 20px; }
  .accordion-button { padding: 20px 40px 20px 16px; font-size: 15px; }
  .cta-section { padding: 48px 0; }
  .cta-inner h2 { font-size: 24px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .modal-body { padding: 24px; }
  .modal-dialog { margin: 16px; }
}

/* roulang page: article */
:root {
            --bs-primary: #2B6EE2;
            --bs-primary-hover: #1D4FC4;
            --bs-primary-light: #E8F1FE;
            --bs-accent: #0F9F8F;
            --bs-gold: #E8A33D;
            --bs-body-bg: #F7F9FC;
            --bs-card-bg: #FFFFFF;
            --bs-text: #1E293B;
            --bs-text-secondary: #64748B;
            --bs-text-muted: #94A3B8;
            --bs-border: #E2E8F0;
            --bs-footer-bg: #0F172A;
            --bs-footer-text: #94A3B8;
            --bs-radius-xl: 24px;
            --bs-radius-lg: 20px;
            --bs-radius-md: 12px;
            --bs-radius-sm: 10px;
            --bs-shadow-sm: 0 2px 8px rgba(30,64,175,0.06);
            --bs-shadow-md: 0 8px 30px rgba(30,64,175,0.10);
            --bs-shadow-lg: 0 16px 40px rgba(30,64,175,0.14);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--bs-body-bg);
            color: var(--bs-text);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--bs-primary);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--bs-primary-hover);
        }

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

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== Header 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            box-shadow: none;
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: var(--bs-shadow-lg);
        }

        .header-top {
            padding: 14px 0;
            background: #fff;
        }
        .header-top-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--bs-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
        }
        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--bs-text);
            letter-spacing: 0.5px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--bs-primary);
            color: #fff;
            border: 1px solid var(--bs-primary);
            border-radius: var(--bs-radius-sm);
            padding: 11px 26px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-main:hover {
            background: var(--bs-primary-hover);
            border-color: var(--bs-primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--bs-shadow-md);
        }
        .btn-main:focus,
        .btn-main:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(43, 110, 226, 0.25);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--bs-primary);
            border: 1px solid var(--bs-primary);
            border-radius: var(--bs-radius-sm);
            padding: 11px 26px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-outline:hover {
            background: var(--bs-primary-light);
            color: var(--bs-primary);
            border-color: var(--bs-primary);
            transform: translateY(-2px);
            box-shadow: var(--bs-shadow-md);
        }
        .btn-outline:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(43, 110, 226, 0.25);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--bs-border);
            border-radius: var(--bs-radius-sm);
            background: #fff;
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            padding: 0;
            transition: all 0.3s ease;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--bs-text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle:hover {
            border-color: var(--bs-primary);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .header-channels {
            border-top: 1px solid var(--bs-border);
            background: #fff;
        }
        .channel-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 0;
            flex-wrap: wrap;
        }
        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--bs-text);
            background: transparent;
            border: 1px solid transparent;
            text-decoration: none;
            white-space: nowrap;
            transition: all 0.3s ease;
            position: relative;
        }
        .channel-link:hover {
            background: var(--bs-primary-light);
            color: var(--bs-primary);
        }
        .channel-link.active {
            background: var(--bs-primary-light);
            color: var(--bs-primary);
            border-color: transparent;
            position: relative;
        }
        .channel-link.active::after {
            content: "";
            position: absolute;
            left: 20px;
            right: 20px;
            bottom: -1px;
            height: 2px;
            background: var(--bs-primary);
            border-radius: 2px;
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--bs-text-muted);
            margin-bottom: 20px;
        }
        .breadcrumb-nav a {
            color: var(--bs-text-secondary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .breadcrumb-nav a:hover {
            color: var(--bs-primary);
        }
        .breadcrumb-nav .sep {
            color: var(--bs-text-muted);
            font-size: 12px;
        }
        .breadcrumb-nav .current {
            color: var(--bs-text);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 320px;
        }

        /* ========== 文章头部 ========== */
        .article-hero {
            background: #fff;
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--bs-border);
        }
        .article-hero h1 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--bs-text);
            margin: 0 0 18px;
            max-width: 820px;
            letter-spacing: 0.2px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 14px;
            color: var(--bs-text-secondary);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item i {
            color: var(--bs-text-muted);
            font-size: 13px;
        }
        .category-badge {
            display: inline-block;
            background: var(--bs-primary-light);
            color: var(--bs-primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 6px;
            line-height: 1.4;
        }

        /* ========== 正文区 ========== */
        .article-body-section {
            padding: 48px 0 64px;
        }
        .article-body-card {
            background: #fff;
            border-radius: var(--bs-radius-lg);
            padding: 48px;
            box-shadow: var(--bs-shadow-sm);
            max-width: 760px;
            margin: 0 auto;
        }

        .article-content-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--bs-text);
        }
        .article-content-body h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 40px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--bs-primary);
            line-height: 1.4;
        }
        .article-content-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 32px 0 12px;
            line-height: 1.5;
        }
        .article-content-body h4 {
            font-size: 17px;
            font-weight: 700;
            margin: 24px 0 10px;
            line-height: 1.5;
        }
        .article-content-body p {
            margin: 0 0 20px;
            line-height: 1.8;
        }
        .article-content-body blockquote {
            background: var(--bs-primary-light);
            border-left: 4px solid var(--bs-primary);
            border-radius: 0 var(--bs-radius-md) var(--bs-radius-md) 0;
            padding: 20px 24px;
            margin: 24px 0;
            color: var(--bs-text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .article-content-body ul,
        .article-content-body ol {
            padding-left: 24px;
            margin: 0 0 20px;
        }
        .article-content-body li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .article-content-body img {
            max-width: 100%;
            border-radius: var(--bs-radius-md);
            box-shadow: var(--bs-shadow-sm);
            margin: 24px 0;
        }
        .article-content-body a {
            color: var(--bs-primary);
            text-decoration: underline;
        }
        .article-content-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--bs-radius-md);
            overflow: hidden;
            font-size: 15px;
        }
        .article-content-body table th {
            background: var(--bs-primary-light);
            color: var(--bs-text);
            font-weight: 600;
            padding: 12px 16px;
            border: 1px solid var(--bs-border);
        }
        .article-content-body table td {
            padding: 12px 16px;
            border: 1px solid var(--bs-border);
        }
        .article-content-body pre {
            background: #0F172A;
            color: #E2E8F0;
            border-radius: var(--bs-radius-md);
            padding: 20px 24px;
            overflow: auto;
            margin: 24px 0;
            font-size: 14px;
            line-height: 1.6;
        }
        .article-content-body code {
            background: var(--bs-primary-light);
            color: var(--bs-primary);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
        }
        .article-content-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        /* 内容未找到 */
        .article-not-found {
            text-align: center;
            padding: 60px 20px;
            color: var(--bs-text-secondary);
        }
        .article-not-found i {
            font-size: 56px;
            color: var(--bs-text-muted);
            margin-bottom: 20px;
            display: block;
        }
        .article-not-found p {
            font-size: 18px;
            margin-bottom: 24px;
            color: var(--bs-text);
            font-weight: 600;
        }

        /* ========== 相关推荐 ========== */
        .related-section {
            padding: 64px 0;
            background: var(--bs-body-bg);
        }
        .section-title-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
        }
        .section-title-wrap h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--bs-text);
            margin: 0;
            position: relative;
            padding-left: 14px;
        }
        .section-title-wrap h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--bs-primary);
            border-radius: 4px;
        }

        .related-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--bs-shadow-sm);
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--bs-shadow-md);
            transform: translateY(-4px);
        }
        .related-card .related-img {
            width: 100%;
            height: 190px;
            overflow: hidden;
            background: var(--bs-primary-light);
            flex-shrink: 0;
        }
        .related-card .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-img img {
            transform: scale(1.03);
        }
        .related-card .related-body {
            padding: 22px 22px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-card .related-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--bs-text);
            line-height: 1.5;
            margin: 0 0 10px;
        }
        .related-card .related-body h3 a {
            color: var(--bs-text);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .related-card .related-body h3 a:hover {
            color: var(--bs-primary);
        }
        .related-card .related-date {
            font-size: 13px;
            color: var(--bs-text-muted);
            margin-top: auto;
            padding-top: 8px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-footer {
            text-align: center;
            margin-top: 40px;
        }

        /* ========== CTA 区块 ========== */
        .cta-section {
            padding: 48px 0 80px;
            background: var(--bs-body-bg);
        }
        .cta-inner {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            border-radius: var(--bs-radius-xl);
            overflow: hidden;
            padding: 72px 40px;
            text-align: center;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: rgba(255, 255, 255, 0.88);
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--bs-text);
            margin-bottom: 14px;
        }
        .cta-content p {
            font-size: 16px;
            color: var(--bs-text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bs-footer-bg);
            color: var(--bs-footer-text);
            padding: 64px 0 0;
            font-size: 14px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.2);
        }
        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            text-decoration: none;
            margin-bottom: 16px;
        }
        .footer-logo .logo-icon {
            background: var(--bs-primary);
        }
        .footer-brand p {
            color: var(--bs-footer-text);
            line-height: 1.7;
            margin: 0;
            max-width: 360px;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-links ul,
        .footer-contact ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li,
        .footer-contact li {
            margin-bottom: 10px;
            line-height: 1.6;
        }
        .footer-links a {
            color: var(--bs-footer-text);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-about {
            padding: 24px 0;
            border-bottom: 1px solid rgba(148, 163, 184, 0.2);
        }
        .footer-about p {
            margin: 0;
            color: var(--bs-text-muted);
            font-size: 13px;
            line-height: 1.7;
            max-width: 720px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding: 20px 0 28px;
            font-size: 13px;
            color: var(--bs-text-muted);
        }
        .footer-bottom span:first-child {
            color: var(--bs-footer-text);
        }

        /* ========== Modal ========== */
        .modal-content {
            border-radius: var(--bs-radius-xl);
            border: none;
            padding: 32px;
            box-shadow: var(--bs-shadow-lg);
        }
        .modal-header {
            border-bottom: none;
            padding: 0;
            margin-bottom: 8px;
        }
        .modal-body {
            padding: 0;
        }
        .modal-title {
            font-size: 22px;
            font-weight: 800;
            color: var(--bs-text);
        }
        .modal-subtitle {
            font-size: 14px;
            color: var(--bs-text-secondary);
            margin-bottom: 20px;
            line-height: 1.6;
        }
        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #F1F5F9;
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--bs-text-secondary);
            cursor: pointer;
            transition: all 0.3s ease;
            z-index: 10;
        }
        .modal-close:hover {
            background: var(--bs-primary-light);
            color: var(--bs-primary);
        }
        .modal-close i {
            font-size: 14px;
        }

        .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--bs-text);
            margin-bottom: 6px;
        }
        .form-control,
        .form-select {
            border-radius: var(--bs-radius-md);
            border: 1px solid var(--bs-border);
            padding: 12px 16px;
            font-size: 15px;
            background: #F7F9FC;
            color: var(--bs-text);
            transition: all 0.3s ease;
        }
        .form-control:focus,
        .form-select:focus {
            border-color: var(--bs-primary);
            box-shadow: 0 0 0 3px rgba(43, 110, 226, 0.15);
            background: #fff;
            outline: none;
        }
        .form-control.is-invalid {
            border-color: #dc3545;
        }
        .form-control.is-valid {
            border-color: var(--bs-accent);
        }

        .privacy-note {
            font-size: 12px;
            color: var(--bs-text-muted);
            text-align: center;
            margin-top: 16px;
            margin-bottom: 0;
            line-height: 1.6;
        }
        .privacy-note a {
            color: var(--bs-text-secondary);
            text-decoration: underline;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1199.98px) {
            .article-hero h1 {
                font-size: 32px;
            }
            .article-body-card {
                padding: 40px;
            }
        }

        @media (max-width: 991.98px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .header-channels {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .header-channels::-webkit-scrollbar {
                display: none;
            }
            .channel-nav {
                flex-wrap: nowrap;
                padding: 10px 0;
                min-width: max-content;
            }
            .channel-link {
                padding: 8px 18px;
            }
            .channel-link.active::after {
                left: 18px;
                right: 18px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .article-hero h1 {
                font-size: 30px;
            }
            .cta-inner {
                padding: 60px 28px;
            }
            .cta-content h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 767.98px) {
            body {
                font-size: 15px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-top {
                padding: 10px 0;
            }
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 17px;
                border-radius: 10px;
            }
            .header-actions .btn-main {
                padding: 9px 16px;
                font-size: 14px;
            }
            .nav-toggle {
                display: flex;
            }

            .article-hero {
                padding: 36px 0 32px;
            }
            .article-hero h1 {
                font-size: 26px;
                line-height: 1.35;
                margin-bottom: 14px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
                flex-wrap: wrap;
            }
            .breadcrumb-nav .current {
                max-width: 180px;
            }

            .article-body-section {
                padding: 24px 0 48px;
            }
            .article-body-card {
                padding: 24px 20px;
                border-radius: 16px;
            }
            .article-content-body h2 {
                font-size: 22px;
            }
            .article-content-body h3 {
                font-size: 18px;
            }

            .related-section {
                padding: 48px 0;
            }
            .section-title-wrap h2 {
                font-size: 24px;
            }
            .related-card .related-img {
                height: 160px;
            }

            .cta-section {
                padding: 32px 0 56px;
            }
            .cta-inner {
                padding: 48px 20px;
                border-radius: 18px;
            }
            .cta-content h2 {
                font-size: 24px;
            }
            .cta-content p {
                font-size: 14px;
                margin-bottom: 20px;
            }

            .btn-main,
            .btn-outline {
                width: 100%;
                text-align: center;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .modal-content {
                padding: 24px 20px;
                border-radius: 18px;
                margin: 16px;
            }
            .modal-title {
                font-size: 20px;
            }
            .modal-dialog {
                align-items: center;
            }
            .modal-dialog-centered {
                min-height: calc(100% - 32px);
            }
        }

        @media (max-width: 575.98px) {
            .breadcrumb-nav {
                font-size: 13px;
                gap: 6px;
            }
            .breadcrumb-nav .current {
                max-width: 130px;
            }
            .related-card .related-img {
                height: 140px;
            }
            .article-body-card {
                padding: 20px 16px;
            }
            .cta-inner {
                padding: 40px 16px;
            }
        }

/* roulang page: category2 */
:root{
  --bs-primary:#2B6EE2;
  --bs-primary-hover:#1D4FC4;
  --bs-primary-light:#E8F1FE;
  --bs-accent:#0F9F8F;
  --bs-gold:#E8A33D;
  --bg-body:#F7F9FC;
  --bg-card:#FFFFFF;
  --text-main:#1E293B;
  --text-sub:#64748B;
  --text-weak:#94A3B8;
  --border-color:#E2E8F0;
  --footer-bg:#0F172A;
  --footer-text:#94A3B8;
  --radius-lg:20px;
  --radius-md:12px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-1:0 2px 8px rgba(30,64,175,0.06);
  --shadow-2:0 8px 30px rgba(30,64,175,0.10);
  --shadow-3:0 16px 40px rgba(30,64,175,0.14);
  --font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --container-w:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-family);
  background:var(--bg-body);
  color:var(--text-main);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--bs-primary);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--bs-primary-hover)}
ul,ol{margin:0;padding:0;list-style:none}
button:focus, a:focus, input:focus, select:focus, textarea:focus{
  outline:2px solid rgba(43,110,226,.45);
  outline-offset:2px;
}
.container{max-width:var(--container-w)}
.btn{
  border-radius:var(--radius-sm);
  font-weight:600;
  font-size:15px;
  padding:.72rem 1.6rem;
  transition:all .3s ease;
  border:2px solid transparent;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
}
.btn-main{
  background:var(--bs-primary);
  color:#fff;
  border-color:var(--bs-primary);
}
.btn-main:hover{
  background:var(--bs-primary-hover);
  border-color:var(--bs-primary-hover);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
}
.btn-outline{
  background:transparent;
  color:var(--bs-primary);
  border-color:var(--bs-primary);
}
.btn-outline:hover{
  background:var(--bs-primary-light);
  border-color:var(--bs-primary);
  color:var(--bs-primary-hover);
}
.btn-light-outline{
  background:rgba(255,255,255,.15);
  color:#fff;
  border-color:rgba(255,255,255,.5);
}
.btn-light-outline:hover{
  background:rgba(255,255,255,.25);
  color:#fff;
  border-color:#fff;
}

/* Header */
.site-header{
  position:relative;
  z-index:1050;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border-color);
  transition:box-shadow .3s ease, background .3s ease;
}
.site-header.is-sticky{
  position:fixed;
  top:0;left:0;right:0;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow-3);
}
.header-top{
  padding:.85rem 0;
  border-bottom:1px solid #f1f4f9;
}
.header-top-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}
.logo{
  display:flex;
  align-items:center;
  gap:.6rem;
}
.logo-icon{
  width:38px;height:38px;
  background:var(--bs-primary);
  color:#fff;
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:18px;
  box-shadow:0 4px 12px rgba(43,110,226,.25);
}
.logo-text{
  font-size:20px;
  font-weight:800;
  color:var(--text-main);
  letter-spacing:.02em;
  white-space:nowrap;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:.8rem;
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  background:var(--bg-body);
  border:1px solid var(--border-color);
  border-radius:10px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--text-main);
  border-radius:2px;
  transition:transform .3s ease, opacity .3s ease;
}
.nav-toggle.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.header-channels{
  position:relative;
  background:transparent;
}
.channel-nav{
  display:flex;
  align-items:center;
  gap:1.2rem;
  padding:.6rem 0;
  flex-wrap:nowrap;
  overflow-x:auto;
  -ms-overflow-style:none;
  scrollbar-width:none;
}
.channel-nav::-webkit-scrollbar{display:none}
.channel-link{
  flex-shrink:0;
  display:inline-flex;
  align-items:center;
  padding:.45rem 1.15rem;
  border-radius:var(--radius-pill);
  font-size:14px;
  font-weight:600;
  color:var(--text-main);
  background:transparent;
  transition:background .25s ease, color .25s ease, box-shadow .25s ease;
  white-space:nowrap;
}
.channel-link:hover{
  background:var(--bs-primary-light);
  color:var(--bs-primary);
}
.channel-link.active{
  background:var(--bs-primary-light);
  color:var(--bs-primary);
  box-shadow:inset 0 -2px 0 0 var(--bs-primary);
}

/* Page Banner */
.page-banner{
  position:relative;
  padding:72px 0 60px;
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(255,255,255,.88);
}
.page-banner-inner{
  position:relative;
  z-index:1;
  max-width:820px;
}
.breadcrumb-line{
  display:flex;
  align-items:center;
  gap:.4rem;
  font-size:13px;
  color:var(--text-sub);
  margin-bottom:1rem;
  flex-wrap:wrap;
}
.breadcrumb-line a{color:var(--text-sub)}
.breadcrumb-line a:hover{color:var(--bs-primary)}
.breadcrumb-line .separator{color:var(--text-weak)}
.breadcrumb-line .current{color:var(--bs-primary);font-weight:600}
.page-banner h1{
  font-size:38px;
  font-weight:800;
  line-height:1.2;
  color:var(--text-main);
  margin:0 0 .8rem;
}
.page-banner .banner-desc{
  font-size:16px;
  color:var(--text-sub);
  line-height:1.8;
  margin-bottom:1.6rem;
  max-width:680px;
}
.banner-actions{
  display:flex;
  gap:.8rem;
  flex-wrap:wrap;
}

/* Stats */
.stats-section{
  padding:56px 0;
  background:var(--bs-primary-light);
}
.stats-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:2rem;
  text-align:center;
}
.stat-item{
  position:relative;
  padding:1rem 1.5rem;
}
.stat-item:not(:first-child)::before{
  content:"";
  position:absolute;
  left:-1rem;top:50%;
  transform:translateY(-50%);
  width:1px;height:56px;
  background:#D7E6FB;
}
.stat-num{
  font-size:48px;
  font-weight:800;
  color:var(--bs-accent);
  line-height:1.2;
  font-family:var(--font-family);
  font-variant-numeric:tabular-nums;
}
.stat-label{
  font-size:14px;
  color:var(--text-sub);
  margin-top:.4rem;
}

/* Section base */
.section-block{padding:72px 0}
.section-head{
  margin-bottom:2.5rem;
}
.section-head .section-kicker{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  font-size:13px;
  font-weight:700;
  color:var(--bs-primary);
  background:var(--bs-primary-light);
  padding:.35rem .9rem;
  border-radius:var(--radius-pill);
  margin-bottom:.9rem;
}
.section-head h2{
  font-size:30px;
  font-weight:800;
  line-height:1.3;
  color:var(--text-main);
  margin:0 0 .6rem;
}
.section-head p{
  font-size:15px;
  color:var(--text-sub);
  max-width:640px;
  margin:0;
}
.section-head.text-center p{margin-left:auto;margin-right:auto}
.section-head.text-center{text-align:center}

/* Feature Cards */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1.5rem;
}
.feature-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  padding:2rem 1.8rem;
  box-shadow:var(--shadow-1);
  border:1px solid #f0f3f8;
  transition:transform .3s ease, box-shadow .3s ease;
}
.feature-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-2);
}
.feature-icon{
  width:48px;height:48px;
  background:var(--bs-primary-light);
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:1.2rem;
}
.feature-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--text-main);
  margin:0 0 .5rem;
}
.feature-card p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
  margin:0;
}

/* Guide Cards */
.guide-cards-section{
  background:var(--bg-body);
}
.guide-cards-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1.5rem;
}
.guide-card{
  background:var(--bg-card);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  border:1px solid #f0f3f8;
  transition:transform .3s ease, box-shadow .3s ease;
  display:flex;
  flex-direction:column;
}
.guide-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-2);
}
.guide-card:hover .guide-card-cover img{
  transform:scale(1.03);
}
.guide-card-cover{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:#e9eef6;
}
.guide-card-cover img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.card-tag{
  position:absolute;
  top:12px;left:12px;
  background:rgba(255,255,255,.92);
  color:var(--bs-primary);
  font-size:12px;
  font-weight:700;
  padding:.25rem .7rem;
  border-radius:var(--radius-pill);
  backdrop-filter:blur(6px);
}
.guide-card-body{
  padding:1.4rem 1.5rem 1.3rem;
  display:flex;
  flex-direction:column;
  flex:1;
}
.guide-card-body h3{
  font-size:17px;
  font-weight:700;
  color:var(--text-main);
  margin:0 0 .6rem;
  line-height:1.45;
  transition:color .25s ease;
}
.guide-card:hover .guide-card-body h3{color:var(--bs-primary)}
.guide-card-body p{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
  margin:0 0 1rem;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--text-weak);
  border-top:1px solid #f1f4f9;
  padding-top:.8rem;
}
.card-meta .read-link{
  color:var(--bs-primary);
  font-weight:600;
  font-size:13px;
  display:inline-flex;
  align-items:center;
  gap:.2rem;
}
.card-meta .read-link:hover{color:var(--bs-primary-hover)}

/* Process Steps */
.process-section{
  background:var(--bg-card);
}
.process-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1.5rem;
  counter-reset:step;
}
.process-step{
  counter-increment:step;
  position:relative;
  padding:1.8rem 1.4rem 1.4rem;
  border-radius:var(--radius-lg);
  background:var(--bg-body);
  border:1px solid #f0f3f8;
  transition:transform .3s ease, box-shadow .3s ease;
}
.process-step:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-1);
}
.step-num{
  font-size:32px;
  font-weight:800;
  color:var(--bs-primary);
  opacity:.35;
  line-height:1;
  margin-bottom:.8rem;
  font-variant-numeric:tabular-nums;
}
.process-step h3{
  font-size:16px;
  font-weight:700;
  color:var(--text-main);
  margin:0 0 .45rem;
}
.process-step p{
  font-size:13px;
  color:var(--text-sub);
  line-height:1.6;
  margin:0;
}
.step-arrow{
  position:absolute;
  top:50%;
  right:-1rem;
  transform:translateY(-50%);
  color:var(--bs-primary-light);
  font-size:22px;
  display:flex;
  z-index:2;
}
.process-steps .col-step:last-child .step-arrow{display:none}

/* FAQ */
.faq-section{
  background:var(--bg-body);
}
.faq-layout{
  display:grid;
  grid-template-columns:1fr 1.2fr;
  gap:3rem;
  align-items:start;
}
.faq-intro h2{
  font-size:30px;
  font-weight:800;
  color:var(--text-main);
  line-height:1.3;
  margin:0 0 1rem;
}
.faq-intro p{
  font-size:15px;
  color:var(--text-sub);
  line-height:1.8;
  margin:0;
}
.faq-accordion .accordion-item{
  background:transparent;
  border:none;
  border-top:1px solid var(--border-color);
  border-radius:0;
}
.faq-accordion .accordion-item:last-child{
  border-bottom:1px solid var(--border-color);
}
.faq-accordion .accordion-button{
  font-family:var(--font-family);
  font-size:16px;
  font-weight:600;
  color:var(--text-main);
  background:transparent;
  box-shadow:none;
  padding:1.1rem 1.1rem 1.1rem 1.4rem;
  border-left:3px solid transparent;
  transition:color .25s ease, border-color .25s ease;
  display:flex;
  align-items:center;
}
.faq-accordion .accordion-button::after{
  content:"";
  background-image:none;
  width:10px;height:10px;
  border-right:2px solid var(--text-sub);
  border-bottom:2px solid var(--text-sub);
  transform:rotate(-45deg);
  transition:transform .3s ease;
  margin-left:auto;
  flex-shrink:0;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  border-color:var(--bs-primary);
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--bs-primary);
  border-left-color:var(--bs-primary);
  background:transparent;
  box-shadow:none;
}
.faq-accordion .accordion-button:focus{
  box-shadow:none;
  border-left-color:var(--bs-primary);
}
.faq-accordion .accordion-body{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.8;
  padding:0 1.4rem 1.3rem 1.4rem;
}

/* CTA */
.cta-section{
  padding:56px 0 72px;
  background:var(--bg-card);
}
.cta-box{
  background:var(--bs-primary);
  border-radius:var(--radius-lg);
  padding:3rem 3rem 3.2rem;
  text-align:center;
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow-2);
}
.cta-box::before{
  content:"";
  position:absolute;
  width:260px;height:260px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
  top:-80px;right:-60px;
}
.cta-box::after{
  content:"";
  position:absolute;
  width:160px;height:160px;
  border-radius:50%;
  background:rgba(255,255,255,.06);
  bottom:-50px;left:80px;
}
.cta-box h2{
  color:#fff;
  font-size:28px;
  font-weight:800;
  margin:0 0 .8rem;
  position:relative;z-index:1;
}
.cta-box p{
  color:rgba(255,255,255,.85);
  font-size:15px;
  max-width:560px;
  margin:0 auto 1.6rem;
  position:relative;z-index:1;
}
.cta-box .btn{
  background:#fff;
  color:var(--bs-primary);
  border-color:#fff;
  position:relative;z-index:1;
}
.cta-box .btn:hover{
  background:var(--bs-primary-light);
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(0,0,0,.15);
}

/* Footer */
.site-footer{
  background:var(--footer-bg);
  color:var(--footer-text);
  padding:72px 0 0;
  font-size:14px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr;
  gap:3rem;
  padding-bottom:2.5rem;
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:.6rem;
  font-size:19px;
  font-weight:800;
  color:#fff;
  margin-bottom:1rem;
}
.footer-logo:hover{color:#fff}
.footer-brand p{
  margin:0;
  font-size:14px;
  color:var(--footer-text);
  line-height:1.7;
  max-width:320px;
}
.footer-links h4,
.footer-contact h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin:0 0 1rem;
}
.footer-links ul,
.footer-contact ul{
  display:flex;
  flex-direction:column;
  gap:.55rem;
}
.footer-links a{
  color:var(--footer-text);
  font-size:14px;
  transition:color .25s ease, padding-left .25s ease;
}
.footer-links a:hover{
  color:#fff;
  padding-left:4px;
}
.footer-contact li{
  color:var(--footer-text);
  font-size:14px;
}
.footer-about{
  border-top:1px solid rgba(255,255,255,.08);
  padding:1.4rem 0;
  font-size:13px;
  color:var(--footer-text);
}
.footer-about p{margin:0;line-height:1.7}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:1.2rem 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--footer-text);
  flex-wrap:wrap;
  gap:.5rem;
}

/* Modal */
.modal-content{
  border:none;
  border-radius:24px;
  box-shadow:var(--shadow-3);
  padding:0;
  overflow:hidden;
}
.modal-header{
  border-bottom:none;
  padding:2rem 2rem 0;
  position:relative;
}
.modal-title{
  font-size:20px;
  font-weight:800;
  color:var(--text-main);
}
.modal-subtitle{
  font-size:14px;
  color:var(--text-sub);
  margin-top:.4rem;
  padding-right:2rem;
}
.btn-close{
  background:var(--bg-body);
  border-radius:50%;
  width:38px;height:38px;
  border:1px solid var(--border-color);
  opacity:1;
  display:flex;
  align-items:center;
  justify-content:center;
  margin:0;
  transition:background .25s ease, transform .25s ease;
}
.btn-close:hover{
  background:var(--bs-primary-light);
  transform:rotate(90deg);
}
.modal-body{
  padding:1.4rem 2rem 2rem;
}
.form-label{
  font-size:14px;
  font-weight:600;
  color:var(--text-main);
  margin-bottom:.4rem;
}
.form-control{
  border-radius:var(--radius-md);
  border:1px solid var(--border-color);
  padding:.7rem 1rem;
  font-size:15px;
  font-family:var(--font-family);
  color:var(--text-main);
  transition:border-color .3s ease, box-shadow .3s ease;
}
.form-control:focus{
  border-color:var(--bs-primary);
  box-shadow:0 0 0 3px rgba(43,110,226,.12);
}
.form-control.is-invalid{
  border-color:#dc3545;
  box-shadow:none;
}
.form-control.is-valid{
  border-color:var(--bs-accent);
}
.form-select{
  border-radius:var(--radius-md);
  border:1px solid var(--border-color);
  padding:.7rem 1rem;
  font-size:15px;
  font-family:var(--font-family);
  color:var(--text-main);
}
.form-select:focus{
  border-color:var(--bs-primary);
  box-shadow:0 0 0 3px rgba(43,110,226,.12);
}
.modal-footer{
  border-top:1px solid var(--border-color);
  padding:1.2rem 2rem 2rem;
  justify-content:center;
}
.modal-footer .btn{
  width:100%;
}
.privacy-note{
  font-size:12px;
  color:var(--text-weak);
  text-align:center;
  margin-top:.8rem;
  line-height:1.6;
}
.privacy-note a{
  color:var(--bs-primary);
}

/* Responsive */
@media(min-width:1200px){
  .container{max-width:1280px}
}
@media(max-width:1199px){
  .feature-grid,.guide-cards-grid{gap:1.2rem}
  .section-block{padding:64px 0}
}
@media(max-width:991px){
  .nav-toggle{
    display:flex;
  }
  .header-channels{
    position:absolute;
    top:100%;left:0;right:0;
    background:#fff;
    display:none;
    box-shadow:var(--shadow-2);
    border-bottom:1px solid var(--border-color);
    z-index:1040;
  }
  .header-channels.open{
    display:block;
  }
  .channel-nav{
    flex-wrap:nowrap;
    overflow-x:auto;
    padding:.8rem 1rem;
    gap:.6rem;
  }
  .header-top{
    border-bottom:none;
  }
  .page-banner{
    padding:56px 0 48px;
  }
  .page-banner h1{
    font-size:30px;
  }
  .feature-grid{
    grid-template-columns:1fr;
  }
  .guide-cards-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .process-steps{
    grid-template-columns:repeat(2,1fr);
  }
  .step-arrow{display:none}
  .faq-layout{
    grid-template-columns:1fr;
    gap:2rem;
  }
  .footer-top{
    grid-template-columns:1fr 1fr;
    gap:2rem;
  }
  .stats-row{
    grid-template-columns:repeat(2,1fr);
    row-gap:2rem;
  }
  .stat-item:nth-child(3)::before{
    display:none;
  }
  .stat-item:nth-child(n+3){
    padding-top:1.5rem;
    border-top:1px solid #D7E6FB;
  }
  .stat-item:nth-child(3)::before,.stat-item:nth-child(4)::before{
    left:-1rem;
    top:0;
    transform:none;
    width:1px;height:40px;
  }
}
@media(max-width:767px){
  body{
    font-size:15px;
  }
  .section-block{
    padding:48px 0;
  }
  .section-head h2{
    font-size:24px;
  }
  .logo-text{
    font-size:17px;
  }
  .page-banner{
    padding:44px 0 40px;
  }
  .page-banner h1{
    font-size:27px;
  }
  .page-banner .banner-desc{
    font-size:15px;
  }
  .banner-actions .btn{
    width:100%;
  }
  .guide-cards-grid{
    grid-template-columns:1fr;
  }
  .guide-card-cover{
    aspect-ratio:16/8;
  }
  .process-steps{
    grid-template-columns:1fr;
  }
  .process-step{
    padding:1.4rem 1.2rem 1.2rem;
  }
  .stats-row{
    grid-template-columns:repeat(2,1fr);
    gap:1rem;
  }
  .stat-num{
    font-size:36px;
  }
  .stat-item{
    padding:1rem .5rem;
  }
  .cta-box{
    padding:2.4rem 1.5rem 2.6rem;
    border-radius:var(--radius-lg);
  }
  .cta-box h2{
    font-size:22px;
  }
  .footer-top{
    grid-template-columns:1fr;
    gap:2rem;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
    gap:.4rem;
    padding:1.4rem 0;
  }
  .modal-dialog{
    margin:.5rem;
  }
  .modal-content{
    border-radius:20px;
  }
  .modal-header,.modal-body,.modal-footer{
    padding-left:1.2rem;
    padding-right:1.2rem;
  }
  .sub-page-header{
    padding:1rem 0;
  }
  .faq-intro h2{
    font-size:24px;
  }
}
@media(max-width:520px){
  .header-actions .btn-main{
    font-size:13px;
    padding:.5rem 1rem;
  }
  .page-banner h1{
    font-size:24px;
  }
  .guide-card-body h3{
    font-size:16px;
  }
  .stats-row{
    grid-template-columns:repeat(2,1fr);
  }
  .stat-num{
    font-size:32px;
  }
  .stat-label{
    font-size:13px;
  }
  .process-steps{
    grid-template-columns:1fr;
  }
  .btn-close{
    width:34px;height:34px;
  }
}

/* roulang page: category3 */
:root{
  --primary:#2B6EE2;
  --primary-hover:#1D4FC4;
  --primary-light:#E8F1FE;
  --accent:#0F9F8F;
  --gold:#E8A33D;
  --bg:#F7F9FC;
  --card-bg:#FFFFFF;
  --text:#1E293B;
  --text-secondary:#64748B;
  --text-muted:#94A3B8;
  --border:#E2E8F0;
  --footer-bg:#0F172A;
  --footer-text:#94A3B8;
  --radius-lg:20px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-1:0 2px 8px rgba(30,64,175,0.06);
  --shadow-2:0 8px 30px rgba(30,64,175,0.10);
  --shadow-3:0 16px 40px rgba(30,64,175,0.14);
  --font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-family);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;}
a{text-decoration:none;color:var(--primary);transition:color .2s ease;}
a:hover{color:var(--primary-hover);}
img{max-width:100%;display:block;}
ul,ol{list-style:none;padding:0;margin:0;}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;}
.container{max-width:1280px;padding-left:24px;padding-right:24px;}
@media (max-width:991.98px){.container{padding-left:20px;padding-right:20px;}}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(8px);
  box-shadow:var(--shadow-1);
  transition:box-shadow .3s ease;
}
.site-header.header-scrolled{box-shadow:var(--shadow-3);}
.header-top{border-bottom:1px solid var(--border);}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;height:72px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-icon{
  width:40px;height:40px;background:var(--primary);color:#fff;
  border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;letter-spacing:0;
  box-shadow:0 4px 12px rgba(43,110,226,0.25);
}
.logo-text{font-size:20px;font-weight:800;color:var(--text);letter-spacing:0.5px;}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;border:1px solid transparent;
  padding:10px 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;transition:all .25s ease;
  cursor:pointer;
}
.btn-main:hover{background:var(--primary-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-main:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:10px;cursor:pointer;border-radius:8px;transition:background .2s;}
.nav-toggle:hover{background:var(--primary-light);}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:all .3s;}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.active span:nth-child(2){opacity:0;}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.header-channels{background:#fff;border-bottom:1px solid var(--border);}
.channel-nav{display:flex;gap:8px;padding:14px 0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;padding:8px 20px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text);
  background:transparent;border:1px solid transparent;
  white-space:nowrap;transition:all .25s ease;
}
.channel-link:hover{background:var(--primary-light);color:var(--primary);}
.channel-link.active{background:var(--primary-light);color:var(--primary);font-weight:700;}
.channel-link.active::after{
  content:'';position:absolute;left:20px;right:20px;bottom:5px;
  height:2px;background:var(--primary);border-radius:2px;
}
.channel-link:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
@media (max-width:991.98px){
  .nav-toggle{display:flex;}
  .header-channels{display:none;}
  .header-channels.open{display:block;border-top:1px solid var(--border);}
  .channel-nav{padding:12px 0;}
}

/* ===== Page Hero ===== */
.category-hero{
  position:relative;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding:88px 0 80px;
}
.category-hero::before{
  content:'';position:absolute;inset:0;
  background:rgba(255,255,255,0.72);
}
.category-hero .container{position:relative;z-index:1;}
.hero-row{display:flex;align-items:center;gap:48px;}
.hero-content{flex:1;}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary-light);color:var(--primary);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
  margin-bottom:18px;letter-spacing:0.5px;
}
.hero-title{font-size:36px;line-height:1.25;font-weight:800;color:var(--text);margin-bottom:18px;}
.hero-desc{font-size:16px;color:var(--text-secondary);max-width:580px;margin-bottom:30px;line-height:1.8;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;color:var(--primary);border:1.5px solid var(--primary);
  padding:10px 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;transition:all .25s ease;cursor:pointer;
}
.btn-outline:hover{background:var(--primary-light);color:var(--primary);}
.btn-outline:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.hero-media{flex:1;}
.hero-media img{
  width:100%;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-2);object-fit:cover;
  border:4px solid #fff;
}
.hero-trust{
  display:flex;gap:24px;margin-top:32px;flex-wrap:wrap;
  font-size:13px;color:var(--text-secondary);
}
.hero-trust span{display:inline-flex;align-items:center;gap:6px;}
.hero-trust i{color:var(--accent);}
@media (max-width:991.98px){
  .category-hero{padding:56px 0 48px;}
  .hero-row{flex-direction:column;gap:32px;}
  .hero-media{width:100%;max-width:560px;}
  .hero-title{font-size:30px;}
}
@media (max-width:575.98px){
  .hero-title{font-size:28px;}
  .hero-desc{font-size:15px;}
  .hero-actions .btn-main,.hero-actions .btn-outline{width:100%;}
}

/* ===== Section Base ===== */
.section{padding:84px 0;}
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--primary);
  letter-spacing:2px;text-transform:uppercase;margin-bottom:10px;
}
.section-label::before{content:'';width:4px;height:18px;background:var(--primary);border-radius:2px;}
.section-title{font-size:31px;font-weight:800;line-height:1.3;color:var(--text);margin-bottom:14px;}
.section-desc{font-size:15px;color:var(--text-secondary);max-width:680px;line-height:1.75;}
.section-head{margin-bottom:44px;}
.section-head.center{text-align:center;}
.section-head.center .section-desc{margin-left:auto;margin-right:auto;}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .section-title{font-size:24px;}
}

/* ===== Feature Flow (timeline) ===== */
.feature-section{background:#fff;}
.feature-flow-list{position:relative;padding-top:8px;}
.feature-flow-list::before{
  content:'';position:absolute;left:50%;top:40px;bottom:40px;
  width:2px;background:#D7E6FB;transform:translateX(-50%);
}
.flow-item{
  position:relative;width:calc(50% - 48px);
  background:var(--card-bg);border-radius:16px;
  box-shadow:var(--shadow-1);border:1px solid var(--border);
  padding:32px 30px;margin-bottom:32px;
  transition:box-shadow .3s ease,transform .3s ease;
}
.flow-item:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);}
.flow-item:nth-child(odd){margin-right:auto;}
.flow-item:nth-child(even){margin-left:auto;}
.flow-num{
  position:absolute;top:26px;font-size:36px;font-weight:800;
  color:var(--primary);line-height:1;
  background:var(--bg);padding:4px 5px;border-radius:8px;
  z-index:1;
}
.flow-item:nth-child(odd) .flow-num{right:-46px;}
.flow-item:nth-child(even) .flow-num{left:-46px;}
.flow-icon{
  width:48px;height:48px;background:var(--primary-light);
  color:var(--primary);border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:20px;margin-bottom:16px;
}
.flow-item h3{font-size:21px;font-weight:700;margin-bottom:10px;color:var(--text);}
.flow-item p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:14px;}
.flow-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.flow-link i{transition:transform .25s;}
.flow-link:hover i{transform:translateX(4px);}
@media (max-width:991.98px){
  .feature-flow-list::before{left:20px;transform:none;}
  .flow-item,.flow-item:nth-child(odd),.flow-item:nth-child(even){width:calc(100% - 48px);margin-left:48px;margin-right:0;}
  .flow-item .flow-num{left:-58px !important;right:auto !important;}
}
@media (max-width:575.98px){
  .feature-flow-list::before{left:14px;}
  .flow-item,.flow-item:nth-child(odd),.flow-item:nth-child(even){width:calc(100% - 40px);margin-left:36px;padding:24px 20px;}
  .flow-item .flow-num{left:-50px !important;font-size:28px;}
}

/* ===== Scene Cards ===== */
.scene-section{background:var(--bg);}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.scene-card{
  background:var(--card-bg);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);border:1px solid var(--border);
  transition:all .3s ease;
}
.scene-card:hover{box-shadow:var(--shadow-2);transform:translateY(-5px);}
.scene-thumb{position:relative;overflow:hidden;}
.scene-thumb img{width:100%;height:190px;object-fit:cover;transition:transform .3s ease;}
.scene-card:hover .scene-thumb img{transform:scale(1.03);}
.scene-meta{
  position:absolute;left:16px;bottom:14px;z-index:2;
  display:flex;gap:8px;align-items:center;
}
.badge-cat{
  background:var(--primary-light);color:var(--primary);
  font-size:12px;font-weight:600;padding:4px 12px;
  border-radius:999px;display:inline-flex;align-items:center;gap:4px;
}
.scene-body{padding:26px 24px 24px;}
.scene-body h3{font-size:20px;font-weight:700;margin-bottom:8px;color:var(--text);transition:color .2s;}
.scene-card:hover .scene-body h3{color:var(--primary);}
.scene-body p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:16px;}
.scene-info{display:flex;gap:16px;font-size:13px;color:var(--text-muted);align-items:center;}
.scene-info i{color:var(--accent);font-size:13px;}
.scene-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
  margin-top:14px;
}
.scene-link i{transition:transform .25s;}
.scene-link:hover i{transform:translateX(4px);}
@media (max-width:991.98px){
  .scene-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
}
@media (max-width:575.98px){
  .scene-grid{grid-template-columns:1fr;}
  .scene-thumb img{height:170px;}
}

/* ===== Process Steps ===== */
.process-section{background:#fff;}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.process-step{
  background:var(--bg);border-radius:var(--radius-lg);
  padding:34px 22px 30px;text-align:center;
  border:1px solid var(--border);transition:all .3s ease;
  position:relative;
}
.process-step:hover{background:#fff;box-shadow:var(--shadow-2);transform:translateY(-4px);}
.step-num{
  width:48px;height:48px;background:var(--primary-light);color:var(--primary);
  border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;margin-bottom:18px;
  box-shadow:0 0 0 6px rgba(43,110,226,0.08);
}
.process-step h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--text);}
.process-step p{font-size:13px;color:var(--text-secondary);line-height:1.65;}
.step-arrow{display:none;}
@media (max-width:991.98px){
  .process-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
}
@media (max-width:575.98px){
  .process-grid{grid-template-columns:1fr;}
}

/* ===== FAQ ===== */
.faq-section{background:var(--bg);}
.faq-layout{display:flex;gap:48px;align-items:flex-start;}
.faq-info{flex:0 0 300px;position:sticky;top:140px;}
.faq-info .section-title{margin-bottom:12px;}
.faq-info p{font-size:14px;color:var(--text-secondary);line-height:1.7;}
.faq-wrap{flex:1;}
.accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--border);
  border-radius:0 !important;position:relative;
}
.accordion-item:first-child{border-top:1px solid var(--border);}
.accordion-button{
  background:transparent !important;color:var(--text);
  font-size:17px;font-weight:600;padding:22px 18px 22px 0;
  box-shadow:none !important;border-radius:0 !important;
  display:flex;align-items:center;gap:14px;
}
.accordion-button:not(.collapsed){color:var(--primary);}
.accordion-button:focus{box-shadow:none !important;outline:2px solid var(--primary);outline-offset:-2px;}
.accordion-button::after{display:none;}
.arrow-icon{
  margin-left:auto;width:28px;height:28px;flex-shrink:0;
  background:var(--primary-light);color:var(--primary);
  border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;transition:all .3s ease;
}
.accordion-button:not(.collapsed) .arrow-icon{transform:rotate(90deg);background:var(--primary);color:#fff;}
.accordion-item:has(.accordion-collapse.show)::before{
  content:'';position:absolute;left:0;top:22px;bottom:22px;
  width:3px;background:var(--primary);border-radius:3px;
}
.accordion-body{padding:0 28px 24px 0;color:var(--text-secondary);font-size:15px;line-height:1.75;}
@media (max-width:991.98px){
  .faq-layout{flex-direction:column;gap:32px;}
  .faq-info{flex:1 1 auto;position:static;}
}

/* ===== CTA ===== */
.cta-section{padding:80px 0 90px;}
.cta-box{
  background:var(--primary);border-radius:var(--radius-lg);
  padding:60px 48px;text-align:center;color:#fff;
  position:relative;overflow:hidden;
}
.cta-box::before{
  content:'';position:absolute;right:-60px;top:-60px;
  width:220px;height:220px;background:rgba(255,255,255,0.08);
  border-radius:50%;
}
.cta-box::after{
  content:'';position:absolute;left:-40px;bottom:-80px;
  width:180px;height:180px;background:rgba(255,255,255,0.05);
  border-radius:50%;
}
.cta-box h2{color:#fff;font-size:31px;font-weight:800;margin-bottom:14px;position:relative;z-index:1;}
.cta-box p{color:rgba(255,255,255,0.85);font-size:15px;max-width:560px;margin:0 auto 32px;line-height:1.7;position:relative;z-index:1;}
.cta-btn{
  display:inline-flex;align-items:center;justify-content:center;
  background:#fff;color:var(--primary);border:1px solid transparent;
  padding:13px 36px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:700;transition:all .25s ease;position:relative;z-index:1;cursor:pointer;
}
.cta-btn:hover{background:var(--primary-light);color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-3);}
.cta-btn:focus-visible{outline:2px solid #fff;outline-offset:3px;}
@media (max-width:575.98px){
  .cta-box{padding:44px 22px;}
  .cta-box h2{font-size:24px;}
  .cta-btn{width:100%;}
}

/* ===== Footer ===== */
.site-footer{background:var(--footer-bg);color:var(--footer-text);padding:64px 0 0;}
.footer-top{
  display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08);
}
.footer-logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:800;margin-bottom:16px;}
.footer-logo:hover{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.7;max-width:320px;}
.footer-links h4,.footer-contact h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;}
.footer-links li,.footer-contact li{margin-bottom:10px;font-size:14px;}
.footer-links a{color:var(--footer-text);font-size:14px;transition:color .2s;}
.footer-links a:hover{color:#fff;}
.footer-contact li i{color:var(--primary);margin-right:8px;width:16px;}
.footer-about{
  padding:24px 0;font-size:13px;line-height:1.7;
  color:rgba(148,163,184,0.65);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.footer-bottom{
  padding:22px 0;display:flex;justify-content:space-between;
  font-size:13px;color:rgba(148,163,184,0.55);flex-wrap:wrap;gap:8px;
}
@media (max-width:991.98px){
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1/-1;}
}
@media (max-width:575.98px){
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;text-align:center;}
}

/* ===== Modal ===== */
.modal-content{
  border-radius:24px;padding:20px 28px 28px;
  border:none;box-shadow:var(--shadow-3);
}
.modal-header{border:none;padding:12px 0 6px;}
.modal-title{font-size:22px;font-weight:800;color:var(--text);}
.modal-subtitle{color:var(--text-secondary);font-size:14px;margin-bottom:22px;line-height:1.6;}
.btn-close-custom{
  width:36px;height:36px;border-radius:50%;border:none;
  background:#F1F5F9;color:var(--text-muted);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;cursor:pointer;transition:all .2s ease;margin-left:auto;
}
.btn-close-custom:hover{background:var(--primary-light);color:var(--primary);}
.form-label{font-size:14px;font-weight:600;color:var(--text);margin-bottom:6px;}
.form-control,.form-select{
  border-radius:var(--radius-md);border:1px solid var(--border);
  padding:12px 16px;font-size:15px;color:var(--text);background:#fff;
  transition:border-color .2s,box-shadow .2s;
}
.form-control:focus,.form-select:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(43,110,226,0.15);
}
.form-control.error{border-color:#dc3545;}
.form-control.valid{border-color:var(--accent);}
.btn-block{width:100%;padding:13px 24px;font-size:16px;border:none;margin-top:8px;}
.privacy-note{font-size:12px;color:var(--text-muted);text-align:center;margin-top:16px;line-height:1.6;}
.privacy-note a{color:var(--text-muted);text-decoration:underline;}
.privacy-note a:hover{color:var(--primary);}
@media (max-width:575.98px){
  .modal-dialog{margin:16px;}
  .modal-content{padding:16px 20px 24px;}
}