/* roulang page: index */
:root {
  --brand: #2A6CE8;
  --brand-dark: #1A4FC1;
  --brand-soft: #EAF2FD;
  --accent: #F6A822;
  --accent-soft: #FFF3D9;
  --bg-body: #F5F8FC;
  --bg-surface: #FFFFFF;
  --line: #E4EBF4;
  --text-title: #182742;
  --text-body: #4A5B72;
  --text-muted: #8495AA;
  --shadow-sm: 0 4px 12px rgba(45, 85, 165, 0.06);
  --shadow-md: 0 12px 28px rgba(45, 85, 165, 0.10);
  --shadow-lg: 0 24px 48px rgba(45, 85, 165, 0.15);
  --radius-lg: 18px;
  --radius-md: 12px;
  --section-space: 88px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: var(--bg-body);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: var(--brand);
  transition: color 0.25s ease;
}

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

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

button,
input {
  font-family: inherit;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-title);
  font-weight: 700;
  line-height: 1.35;
  margin-top: 0;
}

/* ==== 左侧固定导航 ==== */
.app-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 264px;
  height: 100vh;
  padding: 24px 18px;
  background: var(--bg-surface);
  border-right: 1px solid var(--line);
  z-index: 1040;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.brand-area {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 8px;
  margin-bottom: 22px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.brand-text {
  color: var(--text-title);
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-text small {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-top: 2px;
}

.nav-caption {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin: 12px 14px 8px;
  text-transform: uppercase;
}

.side-nav-item {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  margin-bottom: 4px;
  border-radius: var(--radius-md);
  color: var(--text-body);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  transition: background 0.25s ease, color 0.25s ease;
}

.side-nav-item:hover {
  background: #F0F5FB;
  color: var(--brand);
}

.side-nav-item.active {
  background: var(--brand-soft);
  color: var(--brand);
  font-weight: 600;
}

.side-nav-item.active::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 15px;
  bottom: 15px;
  width: 3px;
  background: var(--brand);
  border-radius: 0 4px 4px 0;
}

.side-download-card {
  margin-top: auto;
  padding: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.side-download-card .side-card__title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 6px;
}

.side-download-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

/* ==== 移动端顶部条 ==== */
.mobile-topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  padding: 0 16px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  z-index: 1050;
}

.mobile-topbar .brand-area {
  margin: 0;
  padding: 0;
  min-height: 44px;
}

.mobile-topbar .brand-text {
  font-size: 1.02rem;
  white-space: nowrap;
}

.mobile-topbar .brand-text small {
  font-size: 0.62rem;
}

.btn-menu {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius-md);
  color: var(--text-title);
}

.btn-menu:hover,
.btn-menu:focus {
  color: var(--brand);
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(42, 108, 232, 0.15);
}

.btn-menu svg {
  width: 22px;
  height: 22px;
}

.mobile-drawer {
  width: 300px !important;
  max-width: 88%;
}

.mobile-drawer .offcanvas-header {
  padding: 18px 18px 10px;
}

.mobile-drawer .offcanvas-body {
  padding: 0 18px 24px;
  display: flex;
  flex-direction: column;
}

.mobile-drawer .nav-caption {
  margin-top: 18px;
}

.mobile-drawer .side-download-card {
  margin-top: auto;
}

/* ==== 主内容布局 ==== */
.main-content {
  margin-left: 264px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-inner {
  flex: 1;
}

.content-wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 48px;
  padding-right: 48px;
}

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

/* ==== Hero ==== */
.hero-section {
  padding: 0;
  background: linear-gradient(135deg, rgba(234,242,253,0.9) 0%, rgba(255,255,255,0.6) 60%, rgba(234,242,253,0.35) 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.hero-wrap {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 48px;
  align-items: center;
  padding: 96px 0;
}

.hero-copy .eyebrow {
  display: inline-flex;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--brand);
  background: rgba(42, 108, 232, 0.1);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.hero-copy h1 {
  font-size: clamp(2rem, 3.2vw, 3.1rem);
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 22px;
  color: var(--text-title);
}

.hero-copy .hero-sub {
  font-size: 1.06rem;
  color: var(--text-body);
  max-width: 620px;
  line-height: 1.8;
  margin-bottom: 30px;
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.btn-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
  color: #fff !important;
  font-weight: 600;
  border: 0;
  box-shadow: 0 8px 20px rgba(42, 108, 232, 0.22);
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.btn-brand:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(42, 108, 232, 0.3);
  filter: brightness(1.05);
}

.btn-brand:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(42, 108, 232, 0.2);
}

.btn-outline-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  color: var(--brand);
  font-weight: 600;
  border: 1px solid #B9CEF5;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.btn-outline-brand:hover {
  transform: translateY(-3px);
  border-color: var(--brand);
  color: var(--brand);
  box-shadow: 0 8px 20px rgba(42, 108, 232, 0.1);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: rgba(255,255,255,0.9);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--text-body);
}

.hero-badge svg {
  flex-shrink: 0;
}

.hero-visual {
  position: relative;
}

.hero-visual-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 14px;
  box-shadow: var(--shadow-lg);
}

.hero-visual-card img {
  width: 100%;
  border-radius: 16px;
  object-fit: cover;
  aspect-ratio: 6 / 5;
}

.hero-float-chip {
  position: absolute;
  left: -18px;
  bottom: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 16px;
  box-shadow: var(--shadow-md);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  color: var(--text-title);
  font-weight: 600;
  max-width: 230px;
}

.hero-float-chip .chip-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(246,168,34,0.15);
}

/* ==== Section 标题 ==== */
.section-heading {
  margin-bottom: 38px;
}

.section-heading .section-kicker {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--brand);
  margin-bottom: 10px;
}

.section-heading h2 {
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.section-heading .section-desc {
  font-size: 1rem;
  color: var(--text-body);
  max-width: 720px;
  margin-bottom: 0;
}

.section-heading.text-center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* ==== 轮播区 ==== */
.screenshots-section {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--line);
}

.carousel-frame {
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--brand-soft);
}

.carousel-frame .carousel-item img {
  width: 100%;
  height: 520px;
  object-fit: cover;
}

.carousel-frame .carousel-inner {
  border-radius: var(--radius-lg);
}

.carousel-frame .carousel-control-prev,
.carousel-frame .carousel-control-next {
  width: 52px;
  height: 52px;
  top: 50%;
  transform: translateY(-50%);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 50%;
  opacity: 0.85;
  color: var(--text-title);
  font-size: 1.5rem;
  box-shadow: var(--shadow-md);
}

.carousel-frame .carousel-control-prev {
  left: 16px;
}

.carousel-frame .carousel-control-next {
  right: 16px;
}

.carousel-frame .carousel-control-prev:hover,
.carousel-frame .carousel-control-next:hover {
  opacity: 1;
  color: var(--brand);
  border-color: var(--brand);
  transform: translateY(-50%) scale(1.05);
}

.carousel-indicators {
  bottom: 18px;
}

.carousel-indicators [data-bs-target] {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.9);
  border: 0;
  opacity: 0.7;
  transition: width 0.25s ease, opacity 0.25s ease;
}

.carousel-indicators .active {
  width: 24px;
  opacity: 1;
  background: var(--brand);
}

/* ==== 系统要求 ==== */
.system-section {
  background: var(--bg-body);
}

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

.device-card {
  height: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

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

.device-card__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}

.device-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-soft);
  color: var(--brand);
  border-radius: 14px;
  flex-shrink: 0;
}

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

.device-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 3px;
}

.device-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.device-card h4 {
  font-size: 0.92rem;
  color: var(--brand);
  font-weight: 600;
  margin: 18px 0 8px;
}

.device-card h4:first-of-type {
  margin-top: 0;
}

.device-card p {
  margin-bottom: 12px;
}

.device-tip {
  display: flex;
  gap: 8px;
  margin-top: 18px;
  padding: 12px 14px;
  background: var(--brand-soft);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ==== 最新动态 ==== */
.latest-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.news-card {
  height: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.news-card__cover img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.news-card__body {
  padding: 20px 22px 16px;
}

.news-card__category {
  display: inline-flex;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--brand);
  background: var(--brand-soft);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.news-card__title {
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--text-title);
  margin-bottom: 10px;
}

.news-card__title a {
  color: inherit;
}

.news-card__title a:hover {
  color: var(--brand);
}

.news-card__summary {
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 16px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.news-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

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

.text-link:hover {
  color: var(--brand-dark);
}

.empty-state {
  background: rgba(234, 242, 253, 0.64);
  border: 1px dashed #B9CEF5;
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-body);
}

.empty-state p {
  margin-bottom: 0;
}

/* ==== 评价墙 ==== */
.review-section {
  background: var(--bg-body);
}

.review-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 28px;
}

.review-summary {
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  height: fit-content;
  box-shadow: var(--shadow-sm);
}

.review-score {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--text-title);
  line-height: 1;
}

.review-score .score-base {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 4px;
}

.review-stars {
  color: var(--accent);
  font-size: 0.95rem;
  letter-spacing: 2px;
  margin: 10px 0 8px;
}

.review-count {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.rating-bars {
  margin-top: 22px;
}

.rating-line {
  display: grid;
  grid-template-columns: 64px 1fr 40px;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.82rem;
  color: var(--text-body);
}

.rating-track {
  height: 8px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
}

.rating-track span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--accent);
}

.rating-line .rate {
  text-align: right;
  font-weight: 600;
  color: var(--text-title);
}

.review-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.review-card {
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.review-card__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-soft);
  color: var(--brand);
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.avatar.secondary {
  background: var(--accent-soft);
  color: #C47B05;
}

.review-name {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-title);
}

.review-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.review-body {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: 12px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.review-footnote {
  font-size: 0.76rem;
  color: var(--text-muted);
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

/* ==== FAQ ==== */
.faq-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--line);
}

.faq-content {
  max-width: 840px;
  margin: 0 auto;
}

.faq-accordion .accordion-item {
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
}

.faq-accordion .accordion-button {
  background: transparent;
  color: var(--text-title);
  font-size: 1rem;
  font-weight: 700;
  padding: 20px 28px;
  border-radius: 0 !important;
  box-shadow: none;
  border-left: 3px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.faq-accordion .accordion-button:hover {
  color: var(--brand);
}

.faq-accordion .accordion-button:not(.collapsed) {
  color: var(--brand);
  border-left-color: var(--brand);
  background: rgba(234, 242, 253, 0.5);
}

.faq-accordion .accordion-button:focus {
  box-shadow: none;
}

.faq-accordion .accordion-button::after {
  background-image: none;
  content: "+";
  width: 22px;
  height: 22px;
  font-size: 1.4rem;
  line-height: 1;
  text-align: center;
  color: var(--brand);
  transform: none;
  transition: transform 0.25s ease;
}

.faq-accordion .accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
}

.faq-accordion .accordion-body {
  padding: 4px 28px 28px 28px;
  color: var(--text-body);
  line-height: 1.8;
  font-size: 0.96rem;
}

/* ==== 下载区 ==== */
.download-section {
  padding-bottom: 96px;
  background: var(--bg-body);
}

.download-panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #EAF2FD 0%, #DCE9FB 100%);
  border: 1px solid #D5E5F8;
  border-radius: 28px;
  padding: 58px;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.download-panel h2 {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 800;
  margin-bottom: 10px;
}

.download-panel .section-desc {
  max-width: 640px;
  margin: 0 auto 36px;
}

.download-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.download-card {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid #fff;
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  min-height: 150px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.download-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.download-card svg {
  width: 34px;
  height: 34px;
  margin-bottom: 12px;
  color: var(--brand);
}

.download-card .platform-name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 4px;
}

.download-card .platform-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.download-card .download-entry {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 18px;
  border-radius: var(--radius-md);
  background: var(--brand-soft);
  color: var(--brand) !important;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background 0.25s ease, color 0.25s ease;
}

.download-card .download-entry:hover {
  background: var(--brand);
  color: #fff !important;
}

/* ==== Footer ==== */
.site-footer {
  background: #EDF3FB;
  border-top: 1px solid var(--line);
  padding: 48px 0 32px;
  margin-top: 0;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-title);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: var(--text-body);
  font-size: 0.9rem;
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  border-top: 1px solid #dae4f2;
  margin-top: 26px;
  padding-top: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==== 按钮通用 ==== */
.btn-sm-ghost {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--text-body);
  transition: all 0.25s ease;
}

.btn-sm-ghost:hover {
  color: var(--brand);
  border-color: var(--brand);
  background: var(--brand-soft);
}

.back-top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
}

/* ==== 响应式 ==== */
@media (max-width: 1199.98px) {
  .content-wrap {
    padding-left: 32px;
    padding-right: 32px;
  }

  .carousel-frame .carousel-item img {
    height: 420px;
  }

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

  .review-summary {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 18px;
  }
}

@media (max-width: 991.98px) {
  .app-sidebar {
    display: none !important;
  }

  .mobile-topbar {
    display: flex;
  }

  .main-content {
    margin-left: 0;
  }

  .main-inner {
    padding-top: 64px;
  }

  .content-wrap {
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero-wrap {
    grid-template-columns: 1fr;
    padding: 72px 0 80px;
    gap: 32px;
  }

  .hero-copy {
    text-align: left;
  }

  .hero-visual {
    max-width: 600px;
  }

  .requirements-grid,
  .review-list {
    grid-template-columns: 1fr;
  }

  .download-panel {
    padding: 40px 24px;
  }

  .download-cards {
    grid-template-columns: 1fr;
  }

  :root {
    --section-space: 64px;
  }
}

@media (max-width: 767.98px) {
  .content-wrap {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-wrap {
    padding: 56px 0;
  }

  .hero-visual-card {
    border-radius: 18px;
  }

  .hero-float-chip {
    left: 8px;
    bottom: 12px;
    padding: 8px 12px;
    font-size: 0.78rem;
    border-radius: 12px;
  }

  .carousel-frame {
    border-radius: var(--radius-md);
  }

  .carousel-frame .carousel-item img {
    height: 300px;
  }

  .carousel-frame .carousel-control-prev,
  .carousel-frame .carousel-control-next {
    display: none !important;
  }

  .carousel-indicators {
    bottom: 10px;
  }

  .download-panel {
    padding: 30px 14px;
  }

  :root {
    --section-space: 44px;
  }

  .device-card {
    padding: 22px 18px;
  }

  .review-summary {
    display: block;
  }
}

@media (max-width: 575.98px) {
  .hero-btns {
    flex-direction: column;
  }

  .hero-btns .btn-brand,
  .hero-btns .btn-outline-brand {
    width: 100%;
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

/* 留给移动端抽屉导航继承桌面侧栏样式 */
.mobile-drawer .side-nav-item.active::before {
  left: -18px;
}

.mobile-drawer .side-download-card {
  border-color: var(--line);
  background: #fff;
}

/* roulang page: article */
:root{
  --brand:#2A6CE8;
  --brand-dark:#1A4FC1;
  --brand-soft:#EAF2FD;
  --accent:#F6A822;
  --accent-soft:#FFF3D9;
  --bg-body:#F5F8FC;
  --bg-surface:#FFFFFF;
  --line:#E4EBF4;
  --text-title:#182742;
  --text-body:#4A5B72;
  --text-muted:#8495AA;
  --shadow-sm:0 4px 12px rgba(45,85,165,.06);
  --shadow-md:0 12px 28px rgba(45,85,165,.10);
  --shadow-lg:0 24px 48px rgba(45,85,165,.15);
  --radius-lg:24px;
  --radius-card:18px;
  --radius-btn:12px;
  --ease:.25s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-width:320px;
  background:var(--bg-body);
  color:var(--text-body);
  font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:1rem;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;vertical-align:middle}
a{color:var(--brand);text-decoration:none;transition:.2s ease}
a:hover{color:var(--brand-dark)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(42,108,232,.25);outline-offset:2px;border-radius:8px}
#page-top{scroll-margin-top:20px}
.content-wrap{width:min(1120px,calc(100% - 48px));margin:0 auto}
.app-shell{min-height:100vh}
.site-sidebar{
  position:fixed;
  inset:0 auto 0 0;
  width:264px;
  height:100vh;
  background:var(--bg-surface);
  border-right:1px solid var(--line);
  z-index:1040;
  display:flex;
  flex-direction:column;
  padding:28px 14px 18px;
  overflow-y:auto;
}
.sidebar-inner{display:flex;flex-direction:column;height:100%;min-height:600px}
.brand-area{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:52px;
  padding:6px 8px;
  border-radius:14px;
}
.brand-area:hover{background:var(--brand-soft)}
.brand-logo{width:44px;height:44px;flex:none}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.3;
  font-size:1.08rem;
  font-weight:800;
  color:var(--text-title);
}
.brand-text small{
  font-size:.74rem;
  font-weight:500;
  color:var(--text-muted);
  margin-top:4px;
  letter-spacing:.03em;
}
.sidebar-brand{margin-bottom:26px}
.side-nav{flex:1 1 auto;margin-top:4px}
.nav-label{
  display:block;
  font-size:13px;
  color:var(--text-muted);
  font-weight:600;
  letter-spacing:.14em;
  padding:0 12px;
  margin-bottom:10px;
}
.nav-list{display:grid;gap:6px}
.nav-item{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:46px;
  padding:0 14px;
  border-radius:12px;
  border-left:3px solid transparent;
  font-size:.95rem;
  font-weight:600;
  color:var(--text-body);
  position:relative;
}
.nav-item svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.nav-item:hover{background:#F0F5FB;color:var(--brand)}
.nav-item.active{
  background:var(--brand-soft);
  border-left-color:var(--brand);
  color:var(--brand);
  font-weight:700;
}
.sidebar-download{
  flex:none;
  margin-top:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px;
  background:linear-gradient(155deg,#F8FBFF,#FFFFFF);
  box-shadow:var(--shadow-sm);
  display:flex;
  align-items:center;
  gap:12px;
}
.sidebar-download-icon{
  width:42px;height:42px;
  border-radius:12px;
  background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);flex:none;
}
.sidebar-download-icon svg{width:22px;height:22px}
.sidebar-download-body{min-width:0;flex:1}
.sidebar-download-title{font-size:.9rem;font-weight:700;color:var(--text-title);line-height:1.4}
.sidebar-download-desc{font-size:.76rem;color:var(--text-muted);line-height:1.4}
.download-mini{
  flex:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:36px;
  padding:0 14px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;
  font-size:.82rem;
  font-weight:600;
  border-radius:10px;
  box-shadow:var(--shadow-sm);
  transition:var(--ease);
}
.download-mini:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.page-main{margin-left:264px;min-height:100vh;display:flex;flex-direction:column}
.mobile-topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:1020;
  height:64px;
  padding:0 16px;
  background:rgba(255,255,255,.95);
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
}
.mobile-topbar .brand-logo{width:38px;height:38px}
.mobile-topbar .brand-text{font-size:.98rem}
.mobile-topbar .brand-text small{display:none}
.btn-menu{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text-title);
  cursor:pointer;
  transition:var(--ease);
}
.btn-menu:hover{background:var(--brand-soft);color:var(--brand)}
.btn-menu svg{width:22px;height:22px}
.article-main{flex:1 0 auto;padding:50px 48px 88px}
.article-wrap{width:min(880px,100%);margin:0 auto;min-width:0}
.article-head{margin-bottom:26px}
.article-breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:.85rem;
  color:var(--text-muted);
  margin-bottom:20px;
}
.article-breadcrumb a{color:var(--text-body);display:inline-flex;align-items:center;gap:6px}
.article-breadcrumb a:hover{color:var(--brand)}
.article-breadcrumb .sep{color:#C7D4E4}
.article-breadcrumb .current{
  color:var(--brand);
  font-weight:600;
  max-width:340px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-lead{
  margin:0 0 26px;
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--line);
  background:#fff;
}
.article-lead img{width:100%;aspect-ratio:32/13;object-fit:cover}
.article-title-wrap{position:relative}
.article-badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-bottom:12px;
}
.badge-category{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  padding:0 14px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.02em;
}
.badge-site{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  padding:0 12px;
  border-radius:999px;
  background:var(--accent-soft);
  color:#8A5B00;
  font-size:.8rem;
  font-weight:600;
}
.article-title{
  font-size:clamp(1.7rem,3vw,2.7rem);
  line-height:1.32;
  font-weight:800;
  color:var(--text-title);
  margin:10px 0 14px;
  letter-spacing:-.01em;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px 20px;
  color:var(--text-muted);
  font-size:.86rem;
  padding:14px 0 6px;
  border-top:1px dashed var(--line);
  margin-top:8px;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{width:16px;height:16px}
.article-panel{
  background:var(--bg-surface);
  border:1px solid rgba(228,235,244,.8);
  box-shadow:var(--shadow-md);
  border-radius:var(--radius-lg);
  padding:32px;
}
.summary-block{
  background:#F7FAFF;
  border-left:4px solid var(--brand);
  border-radius:0 14px 14px 0;
  padding:18px 22px;
  margin-bottom:16px;
}
.summary-label{
  display:block;
  font-size:.82rem;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.1em;
  margin-bottom:6px;
}
.summary-text{margin:0;color:var(--text-body);line-height:1.9;font-size:.95rem}
.cms-rich{
  font-size:1rem;
  line-height:1.9;
  color:var(--text-body);
  overflow-wrap:break-word;
  min-width:0;
}
.cms-rich h2{
  font-size:clamp(1.4rem,2vw,1.9rem);
  line-height:1.35;
  color:var(--text-title);
  font-weight:800;
  margin:1.8em 0 .6em;
  padding-bottom:.35em;
  border-bottom:1px solid var(--line);
}
.cms-rich h3{
  font-size:1.3rem;
  color:var(--text-title);
  font-weight:750;
  margin:1.7em 0 .5em;
}
.cms-rich h4{
  font-size:1.15rem;
  color:var(--text-title);
  font-weight:700;
  margin:1.5em 0 .4em;
}
.cms-rich p{margin:1em 0}
.cms-rich img{border-radius:16px;box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.cms-rich ul,.cms-rich ol{
  margin:1em 0 1em 0;
  padding-left:22px;
}
.cms-rich ul{list-style:disc}
.cms-rich ol{list-style:decimal}
.cms-rich li{margin:.35em 0}
.cms-rich strong,.cms-rich b{color:var(--text-title);font-weight:700}
.cms-rich blockquote{
  margin:1.5em 0;
  padding:16px 22px;
  background:var(--brand-soft);
  border-left:4px solid var(--brand);
  border-radius:0 14px 14px 0;
  color:var(--text-body);
}
.cms-rich pre{
  background:#F2F5FA;
  border:1px solid var(--line);
  padding:18px;
  border-radius:14px;
  overflow-x:auto;
}
.cms-rich table{
  width:100%;
  border-collapse:collapse;
  background:#fff;
  border-radius:14px;
  overflow:hidden;
}
.cms-rich th,.cms-rich td{
  border:1px solid var(--line);
  padding:12px 14px;
  font-size:.92rem;
}
.cms-rich th{background:var(--brand-soft);color:var(--text-title);font-weight:700}
.article-tags{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:32px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.article-tags-label{font-size:.86rem;color:var(--text-muted)}
.tag-item{
  display:inline-flex;
  align-items:center;
  min-height:32px;
  padding:0 14px;
  background:#F5F8FC;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--text-body);
  font-size:.82rem;
  transition:var(--ease);
}
.tag-item:hover{background:var(--brand-soft);color:var(--brand);border-color:transparent}
.article-footer-nav{
  display:flex;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.article-cta-block{
  margin-top:28px;
  background:linear-gradient(120deg,#EAF2FD 0%,#F8FBFF 55%,#FFFFFF 100%);
  border:1px solid #D9E8F8;
  border-radius:var(--radius-lg);
  padding:30px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.cta-copy h2{font-size:clamp(1.2rem,2vw,1.7rem);font-weight:800;color:var(--text-title);margin:0 0 8px}
.cta-copy p{max-width:560px;margin:0;font-size:.92rem;color:var(--text-body);line-height:1.8}
.btn-brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:52px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  border:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;
  font-weight:700;
  cursor:pointer;
  box-shadow:var(--shadow-sm);
  transition:var(--ease);
}
.btn-brand:hover{color:#fff;transform:translateY(-3px);box-shadow:var(--shadow-md);filter:brightness(1.03)}
.btn-brand:active{transform:translateY(0);filter:brightness(.96)}
.btn-outline{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:52px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:#fff;
  color:var(--text-title);
  font-weight:700;
  transition:var(--ease);
}
.btn-outline:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft);transform:translateY(-3px)}
.btn-outline:active{transform:translateY(0)}
.article-return{
  margin-top:18px;
  text-align:center;
}
.article-return h2{
  font-size:clamp(1.2rem,2vw,1.7rem);
  font-weight:800;
  color:var(--text-title);
  margin:0 0 6px;
}
.article-return p{color:var(--text-muted);font-size:.92rem;margin:0 0 18px}
.empty-article-panel{
  position:relative;
  max-width:720px;
  margin:0 auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);
  overflow:hidden;
  text-align:center;
  padding:68px 28px 58px;
}
.empty-article-panel .cover-top{
  position:absolute;
  top:0;left:0;right:0;
  height:160px;
  background:linear-gradient(135deg,var(--brand-soft),#FDF6E6);
}
.empty-article-panel .cover-top img{
  width:100%;height:100%;object-fit:cover;opacity:.55;
}
.empty-panel-content{position:relative;z-index:1}
.empty-status{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:3rem;
  font-weight:800;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:24px;
  width:92px;height:92px;
  margin-bottom:20px;
}
.empty-panel-content h1{
  font-size:clamp(1.7rem,3vw,2.4rem);
  font-weight:800;
  color:var(--text-title);
  margin:0 0 12px;
}
.empty-panel-content p{color:var(--text-muted);font-size:.96rem;max-width:480px;margin:0 auto 24px}
.site-footer{
  flex:none;
  border-top:1px solid var(--line);
  background:#F7FAFF;
  padding:46px 0 30px;
}
.footer-content{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:18px;
  margin-bottom:22px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:1.05rem;
  font-weight:800;
  color:var(--text-title);
}
.footer-links{display:flex;align-items:center;flex-wrap:wrap;gap:6px 22px}
.footer-links a{
  color:var(--text-body);
  font-size:.9rem;
  font-weight:500;
  padding:6px 0;
}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:20px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 22px;
  color:var(--text-muted);
  font-size:.82rem;
}
.footer-bottom .back-top{margin-left:auto;display:inline-flex;align-items:center;gap:8px;color:var(--text-body)}
.footer-bottom .back-top:hover{color:var(--brand)}
.offcanvas{
  --bs-offcanvas-width:320px;
  background:#fff;
}
.offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:16px 16px 12px;
  display:flex;align-items:center;justify-content:space-between;
}
.offcanvas-body{
  padding:20px 16px;
  display:flex;
  flex-direction:column;
  min-height:0;
}
.offcanvas-navigation .nav-label{margin-bottom:8px}
.offcanvas-download{margin-top:24px}
.offcanvas-btn-close{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  background:transparent;
  border:0;
  color:var(--text-title);
  border-radius:12px;
}
.offcanvas-btn-close:hover{background:var(--brand-soft);color:var(--brand)}
.offcanvas-btn-close svg{width:22px;height:22px}
@media (max-width:1199.98px){
  .article-main{padding-left:32px;padding-right:32px}
}
@media (max-width:991.98px){
  .site-sidebar{display:none}
  .page-main{margin-left:0}
  .mobile-topbar{display:flex}
  .article-main{padding:30px 28px 70px}
  .article-panel{padding:28px}
}
@media (max-width:767.98px){
  .content-wrap{width:min(100% - 32px,1120px)}
  .article-main{padding:22px 16px 64px}
  .article-lead img{aspect-ratio:16/10}
  .article-panel{padding:22px 18px}
  .article-title{font-size:1.55rem;line-height:1.4}
  .article-meta{gap:8px 14px}
  .article-breadcrumb .current{max-width:180px}
  .summary-block{padding:15px 16px}
  .article-cta-block{flex-direction:column;align-items:flex-start;padding:22px}
  .article-footer-nav{justify-content:flex-start}
  .btn-brand,.btn-outline{width:100%;min-height:50px}
  .footer-content{flex-direction:column;gap:12px}
  .footer-links{gap:4px 16px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-bottom .back-top{margin-left:0}
  .empty-article-panel{padding:56px 20px 46px}
}

/* roulang page: category1 */
:root{
  --brand:#2A6CE8;
  --brand-dark:#1A4FC1;
  --brand-soft:#EAF2FD;
  --accent:#F6A822;
  --accent-soft:#FFF3D9;
  --bg-body:#F5F8FC;
  --bg-surface:#FFFFFF;
  --line:#E4EBF4;
  --text-title:#182742;
  --text-body:#4A5B72;
  --text-muted:#8495AA;
  --shadow-sm:0 4px 12px rgba(45,85,165,.06);
  --shadow-md:0 12px 28px rgba(45,85,165,.10);
  --shadow-lg:0 24px 48px rgba(45,85,165,.15);
  --radius-card:18px;
  --radius-btn:12px;
  --font-stack:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-stack);
  font-size:1rem;
  line-height:1.8;
  color:var(--text-body);
  background:var(--bg-body);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  color:var(--text-title);
  font-weight:700;
  line-height:1.3;
  margin:0 0 .5rem;
}
p{margin:0 0 1rem}
a{color:inherit;text-decoration:none;transition:color .2s ease, background .2s ease, box-shadow .2s ease, transform .25s ease}
img{max-width:100%;display:block}
ul{list-style:none;padding:0;margin:0}
button{font-family:inherit}
a:focus-visible,button:focus-visible{
  outline:3px solid rgba(42,108,232,.35);
  outline-offset:2px;
  border-radius:6px;
}
.app-shell{min-height:100vh;width:100%}
.app-main{margin-left:0;min-height:100vh;background:var(--bg-body);overflow:hidden}
.content-wrap{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding-left:28px;
  padding-right:28px;
}
.section{padding:76px 0}
.section-tight{padding:44px 0}
.section-head{
  margin-bottom:34px;
}
.section-head.more{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
}
.section-eyebrow{
  display:inline-block;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:.85rem;
  font-weight:600;
  letter-spacing:1px;
  padding:5px 14px;
  border-radius:999px;
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(1.4rem,2vw,2rem);
  letter-spacing:-.02em;
}
.section-head p{
  max-width:680px;
  color:var(--text-muted);
  margin-top:10px;
  margin-bottom:0;
}

/* 左侧固定导航 */
.app-sidebar{
  display:none;
  width:264px;
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  background:#fff;
  border-right:1px solid var(--line);
  z-index:1030;
  padding:22px 16px;
}
.sidebar-inner{
  height:100%;
  display:flex;
  flex-direction:column;
}
.sidebar-brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:52px;
  padding:6px 6px 16px;
}
.brand-logo{width:40px;height:40px;flex:0 0 auto}
.brand-text{
  display:block;
  font-size:16px;
  font-weight:800;
  color:var(--text-title);
  line-height:1.2;
}
.brand-text small{
  display:block;
  font-size:11px;
  font-weight:500;
  color:var(--text-muted);
  letter-spacing:.02em;
  margin-top:2px;
}
.side-nav-label{
  font-size:12px;
  font-weight:600;
  letter-spacing:2px;
  color:var(--text-muted);
  padding:10px 10px 8px;
  margin-top:14px;
}
.side-nav{
  display:flex;
  flex-direction:column;
  gap:6px;
}
.side-nav-link{
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 14px 12px 13px;
  border-radius:14px;
  color:var(--text-body);
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  border-left:3px solid transparent;
  position:relative;
}
.side-nav-link svg{width:18px;height:18px;color:var(--text-muted);transition:color .2s ease}
.side-nav-link:hover{
  background:#F0F5FB;
  color:var(--brand-dark);
  transform:translateX(2px);
}
.side-nav-link:hover svg{color:var(--brand)}
.side-nav-link.active{
  background:var(--brand-soft);
  color:var(--brand);
  border-left-color:var(--brand);
}
.side-nav-link.active svg{color:var(--brand)}
.sidebar-card{
  margin-top:auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-sm);
  padding:18px;
  margin-bottom:6px;
}
.sidebar-card-name{
  font-size:14px;
  font-weight:700;
  color:var(--text-title);
  margin-bottom:3px;
}
.sidebar-card-desc{
  font-size:12px;
  color:var(--text-muted);
  margin-bottom:14px;
}
.btn-sidebar{
  display:flex;
  justify-content:center;
  align-items:center;
  min-height:42px;
  font-size:14px;
  font-weight:700;
  background:var(--brand);
  color:#fff;
  border-radius:12px;
  gap:6px;
  transition:background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn-sidebar:hover{
  background:var(--brand-dark);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
}
.btn-sidebar:active{transform:translateY(0) scale(.98)}

/* 移动顶栏 */
.mobile-topbar{
  display:none;
  height:64px;
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  background:#fff;
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:1020;
  box-shadow:0 4px 12px rgba(45,85,165,.04);
}
.mobile-topbar .brand-area{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:44px;
}
.mobile-topbar .brand-text{
  font-size:15px;
  white-space:nowrap;
}
.mobile-topbar .brand-text small{
  font-size:10px;
  white-space:nowrap;
}
.btn-menu{
  width:44px;
  height:44px;
  border-radius:12px;
  background:var(--brand-soft);
  border:1px solid #d6e4f7;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
  transition:background .2s ease, transform .2s ease;
}
.btn-menu:hover{background:#dde9fb;color:var(--brand-dark)}
.btn-menu svg{width:22px;height:22px}

/* Bootstrap 抽屉定制 */
.mobile-sidebar{
  --bs-offcanvas-width:302px;
  background:#fff;
}
.mobile-sidebar .offcanvas-header{
  padding:16px 18px 8px;
}
.mobile-sidebar .offcanvas-header .brand-area{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1;
  min-width:0;
}
.mobile-sidebar .offcanvas-header .brand-text{
  font-size:14px;
  line-height:1.2;
}
.mobile-sidebar .offcanvas-header .brand-text small{
  font-size:10px;
}
.mobile-sidebar .btn-close{
  background:none;
  width:40px;
  height:40px;
  border-radius:12px;
  opacity:1;
  background-image:none;
  margin:0;
  padding:0;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--text-body);
  font-size:24px;
  line-height:1;
}
.mobile-sidebar .btn-close:hover{background:var(--bg-body)}
.mobile-sidebar .offcanvas-body{
  display:flex;
  flex-direction:column;
  padding:14px 18px 22px;
}
.mobile-sidebar .side-nav-link{
  margin-bottom:4px;
}

/* 横幅 */
.page-hero{
  padding-top:46px;
  padding-bottom:20px;
}
.breadcrumb-custom{
  margin-bottom:20px;
}
.breadcrumb-custom ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-muted);
}
.breadcrumb-custom a{
  color:var(--text-muted);
}
.breadcrumb-custom a:hover{color:var(--brand)}
.breadcrumb-custom .sep{display:inline-block;color:#bdc9db}
.banner-panel{
  position:relative;
  overflow:hidden;
  border-radius:28px;
  background:
    linear-gradient(118deg, rgba(234,242,253,.98) 0%, rgba(248,251,254,.95) 48%, rgba(255,255,255,.9) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  border:1px solid var(--line);
  box-shadow:var(--shadow-md);
  padding:56px;
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:34px;
  align-items:center;
}
.banner-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.85rem;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--brand);
  background:rgba(255,255,255,.7);
  border:1px solid #d4e4f9;
  padding:5px 14px;
  border-radius:999px;
  margin-bottom:18px;
}
.banner-kicker svg{width:16px;height:16px}
.banner-panel h1{
  font-size:clamp(2.2rem,3.6vw,3.5rem);
  font-weight:800;
  color:var(--text-title);
  letter-spacing:-.04em;
  margin-bottom:16px;
}
.banner-lead{
  max-width:620px;
  font-size:clamp(1rem,1.15vw,1.2rem);
  color:var(--text-body);
  line-height:1.9;
  margin-bottom:26px;
}
.banner-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  color:var(--text-muted);
  font-size:.9rem;
}
.banner-meta span{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.banner-meta svg{width:16px;height:16px;color:var(--brand)}
.banner-art{
  position:relative;
}
.art-frame{
  aspect-ratio:4/3;
  border-radius:20px;
  overflow:hidden;
  background:linear-gradient(150deg,#dbe8fb,#eaf1ff);
  box-shadow:var(--shadow-lg);
}
.art-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.art-pill{
  position:absolute;
  bottom:18px;
  left:-12px;
  background:var(--text-title);
  color:#fff;
  padding:8px 16px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  box-shadow:var(--shadow-md);
  letter-spacing:.02em;
}

/* 专题指引 */
.topics-section{background:#FBFCFE}
.topic-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.topic-card{
  display:flex;
  flex-direction:column;
  gap:12px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 22px 24px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.topic-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  border-color:#cde0f8;
}
.topic-icon{
  width:48px;
  height:48px;
  border-radius:16px;
  background:var(--brand-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
  margin-bottom:4px;
}
.topic-icon svg{width:22px;height:22px}
.topic-card h3{
  font-size:1.05rem;
  font-weight:700;
  margin:0;
}
.topic-card p{
  font-size:.9rem;
  color:var(--text-muted);
  margin:0;
  line-height:1.7;
}

/* 资讯卡片流 */
.news-section{
  background:var(--bg-body);
}
.news-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.news-card{
  background:var(--bg-surface);
  border:1px solid var(--line);
  border-radius:22px;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease, box-shadow .25s ease;
}
.news-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.news-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#dfe9f5;
}
.news-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.thumb-label{
  position:absolute;
  top:14px;
  left:14px;
  background:rgba(255,255,255,.92);
  color:var(--brand-dark);
  font-size:.78rem;
  font-weight:700;
  padding:4px 12px;
  border-radius:999px;
  backdrop-filter:blur(4px);
  letter-spacing:.03em;
}
.news-content{
  padding:22px 24px 24px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.news-tax{
  font-size:.78rem;
  color:var(--brand);
  background:var(--brand-soft);
  padding:3px 10px;
  border-radius:999px;
  align-self:flex-start;
  font-weight:600;
  margin-bottom:10px;
  letter-spacing:.03em;
}
.news-content h3{
  font-size:1.08rem;
  font-weight:700;
  line-height:1.5;
  margin-bottom:8px;
}
.news-content h3 a{
  color:var(--text-title);
}
.news-content h3 a:hover{
  color:var(--brand);
}
.news-content p{
  color:var(--text-muted);
  font-size:.92rem;
  line-height:1.7;
  margin-bottom:18px;
}
.news-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-top:1px solid #edf2f8;
  padding-top:14px;
  margin-top:auto;
}
.news-date{
  color:var(--text-muted);
  font-size:.85rem;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.news-date svg{width:14px;height:14px}
.news-open{
  font-size:.85rem;
  font-weight:700;
  color:var(--brand);
}
.news-open:hover{
  color:var(--brand-dark);
  transform:translateX(2px);
  display:inline-block;
}

/* 内容价值说明 */
.value-section{
  background:#FBFCFE;
}
.value-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:48px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:28px;
  padding:48px;
  box-shadow:var(--shadow-sm);
}
.value-media{
  border-radius:20px;
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--brand-soft);
  box-shadow:var(--shadow-md);
}
.value-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.value-copy .section-eyebrow{margin-bottom:12px}
.value-copy h2{
  font-size:clamp(1.45rem,2vw,2rem);
  margin-bottom:14px;
}
.value-copy p{
  color:var(--text-body);
  margin-bottom:18px;
}
.value-list{
  margin:18px 0 24px;
}
.value-list li{
  display:flex;
  gap:12px;
  margin-bottom:14px;
  align-items:flex-start;
  color:var(--text-body);
  font-size:.95rem;
}
.value-list .li-icon{
  width:26px;
  height:26px;
  flex:0 0 auto;
  border-radius:9px;
  background:var(--accent-soft);
  color:var(--accent);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:2px;
}
.value-list .li-icon svg{
  width:14px;
  height:14px;
}
.value-list strong{
  color:var(--text-title);
  font-weight:700;
}
.btn-primary-custom{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:54px;
  padding:0 28px;
  border-radius:var(--radius-btn);
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;
  font-weight:700;
  font-size:.95rem;
  letter-spacing:.02em;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease, box-shadow .25s ease, filter .25s ease;
}
.btn-primary-custom:hover{
  color:#fff;
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  filter:brightness(1.05);
}
.btn-primary-custom:active{
  transform:translateY(0) scale(.98);
}
.btn-ghost-custom{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:54px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  background:#fff;
  color:var(--brand-dark);
  font-weight:700;
  border:1px solid #cdddf2;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease;
}
.btn-ghost-custom:hover{
  background:var(--brand-soft);
  color:var(--brand-dark);
  transform:translateY(-3px);
  box-shadow:var(--shadow-sm);
}
.btn-ghost-custom:active{transform:translateY(0) scale(.98)}

/* FAQ */
.faq-section{
  background:var(--bg-body);
}
.faq-panel{
  max-width:880px;
  margin:0 auto;
}
.accordion-custom .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
}
.accordion-custom .accordion-item:first-child{
  border-top:1px solid var(--line);
}
.accordion-custom .accordion-header{
  background:transparent;
}
.accordion-custom .accordion-button{
  background:transparent;
  box-shadow:none;
  font-size:1.02rem;
  font-weight:700;
  color:var(--text-title);
  padding:1.35rem .6rem;
  position:relative;
}
.accordion-custom .accordion-button::after{
  display:none;
}
.accordion-custom .accordion-button::before{
  content:"";
  position:absolute;
  left:0;
  top:1.25rem;
  bottom:1.25rem;
  width:3px;
  border-radius:99px;
  background:transparent;
  transition:background .2s ease;
}
.accordion-custom .accordion-button:not(.collapsed){
  background:transparent;
  color:var(--brand);
}
.accordion-custom .accordion-button:not(.collapsed)::before{
  background:var(--brand);
}
.accordion-custom .accordion-button:hover{
  color:var(--brand);
  background:#fbfdff;
}
.accordion-custom .accordion-body{
  padding:.2rem 1.2rem 1.7rem;
  color:var(--text-body);
  font-size:.95rem;
  line-height:1.9;
}

/* 底部 CTA */
.cta-section{
  background:var(--bg-body);
  padding-top:28px;
}
.cta-panel{
  border-radius:28px;
  border:1px solid #d5e5f8;
  background:
    linear-gradient(115deg,var(--brand-soft),#F8FBFF 68%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  padding:54px 56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
  box-shadow:var(--shadow-md);
}
.cta-panel .cta-text{
  flex:1 1 360px;
}
.cta-panel .section-eyebrow{
  margin-bottom:12px;
}
.cta-panel h2{
  font-size:clamp(1.4rem,2vw,1.9rem);
  margin-bottom:12px;
}
.cta-panel p{
  color:var(--text-body);
  margin-bottom:0;
  max-width:650px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  flex:0 0 auto;
}

/* 页脚 */
.site-footer{
  background:var(--bg-body);
  border-top:1px solid var(--line);
  padding:44px 0 28px;
  margin-top:24px;
}
.footer-content{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  padding-bottom:30px;
  border-bottom:1px solid var(--line);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:17px;
  font-weight:800;
  color:var(--text-title);
}
.footer-brand svg{width:30px;height:30px;flex:0 0 auto}
.footer-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 26px;
}
.footer-links a{
  color:var(--text-muted);
  font-size:.92rem;
  position:relative;
}
.footer-links a:hover{
  color:var(--brand);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding-top:26px;
  color:var(--text-muted);
  font-size:.85rem;
}
.footer-bottom .back-top{
  color:var(--brand);
  font-weight:600;
  font-size:.85rem;
}
.footer-bottom .back-top:hover{
  color:var(--brand-dark);
}

/* 响应式 */
@media (min-width:992px){
  .app-sidebar{display:block}
  .app-main{margin-left:264px}
  .mobile-topbar{display:none}
}
@media (max-width:1199.98px){
  .topic-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .banner-panel{padding:44px}
}
@media (max-width:991.98px){
  .app-sidebar{display:none}
  .mobile-topbar{display:flex}
  .section{padding:60px 0}
  .value-wrap{grid-template-columns:1fr;gap:28px;padding:34px}
  .banner-panel{grid-template-columns:1fr;gap:26px;padding:38px}
  .cta-panel{padding:38px}
}
@media (max-width:767.98px){
  .content-wrap{padding-left:16px;padding-right:16px}
  .section{padding:44px 0}
  .section-head.more{align-items:flex-start;flex-direction:column}
  .news-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr 1fr}
  .cta-panel{padding:30px 22px}
  .banner-panel{padding:28px 22px;border-radius:22px}
  .banner-panel h1{font-size:2rem}
  .banner-meta{gap:8px 16px}
  .value-wrap{padding:24px}
  .footer-content{flex-direction:column;align-items:flex-start}
  .footer-links{gap:10px 18px}
  .footer-bottom{flex-direction:column;justify-content:flex-start;align-items:flex-start}
}
@media (max-width:575.98px){
  .topic-grid{grid-template-columns:1fr}
  .cta-actions{flex-direction:column}
  .cta-actions .btn-primary-custom,
  .cta-actions .btn-ghost-custom{justify-content:center}
}

/* roulang page: category2 */
:root {
            --brand: #2A6CE8;
            --brand-dark: #1A4FC1;
            --brand-soft: #EAF2FD;
            --accent: #F6A822;
            --accent-soft: #FFF3D9;
            --bg-body: #F5F8FC;
            --bg-surface: #FFFFFF;
            --bg-soft: #F0F5FB;
            --line: #E4EBF4;
            --text-title: #182742;
            --text-body: #4A5B72;
            --text-muted: #8495AA;
            --radius-card: 18px;
            --radius-btn: 12px;
            --shadow-sm: 0 4px 12px rgba(45, 85, 165, 0.06);
            --shadow-md: 0 12px 28px rgba(45, 85, 165, 0.10);
            --shadow-lg: 0 24px 48px rgba(45, 85, 165, 0.14);
            --sidebar-width: 264px;
            --transition-base: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

        h1, h2, h3, h4, h5, h6 {
            margin: 0;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            letter-spacing: 0;
        }

        p {
            margin: 0;
        }

        a {
            color: var(--brand);
            text-decoration: none;
            transition: color var(--transition-base);
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .content-wrap {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
        }

        /* ===== 桌面端侧边导航 ===== */
        .desktop-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1045;
            width: var(--sidebar-width);
            display: flex;
            flex-direction: column;
            background: var(--bg-surface);
            border-right: 1px solid var(--line);
            padding: 28px 16px 22px;
        }

        .brand-area {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            min-height: 44px;
            border-radius: var(--radius-btn);
            padding: 4px 8px;
        }

        .brand-logo {
            width: 38px;
            height: 38px;
            flex: 0 0 auto;
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            font-weight: 700;
            font-size: 17px;
            color: var(--text-title);
            line-height: 1.25;
            letter-spacing: 0.01em;
        }

        .brand-text small {
            font-weight: 400;
            font-size: 11px;
            color: var(--text-muted);
            letter-spacing: 0.02em;
            line-height: 1.5;
        }

        .sidebar-brand-wrap {
            padding: 0 8px 24px;
            border-bottom: 1px solid var(--line);
        }

        .sidebar-nav-area {
            flex: 1;
            overflow-y: auto;
            padding-top: 18px;
        }

        .side-nav-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            letter-spacing: 0.18em;
            padding: 0 14px;
            margin-bottom: 8px;
        }

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

        .side-link {
            position: relative;
            display: flex;
            align-items: center;
            min-height: 46px;
            padding: 10px 16px 10px 14px;
            border-radius: 12px;
            border-left: 3px solid transparent;
            color: var(--text-body);
            font-weight: 500;
            font-size: 15px;
            line-height: 1.4;
            transition: background var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
        }

        .side-link:hover {
            background: var(--bg-soft);
            color: var(--brand-dark);
        }

        .side-link.active {
            background: var(--brand-soft);
            border-left-color: var(--brand);
            color: var(--brand-dark);
            font-weight: 600;
        }

        .side-link .link-icon {
            width: 18px;
            height: 18px;
            margin-right: 12px;
            flex: 0 0 auto;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }

        .side-link:hover .link-icon,
        .side-link.active .link-icon {
            color: var(--brand);
        }

        .sidebar-download-card {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            padding: 18px 16px 16px;
            margin-top: 14px;
            text-align: left;
        }

        .sidebar-download-card .sd-title {
            display: block;
            font-weight: 700;
            font-size: 15px;
            color: var(--text-title);
        }

        .sidebar-download-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 4px 0 14px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 44px;
            padding: 10px 22px;
            border: 0;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            cursor: pointer;
            transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--brand), var(--brand-dark));
            color: #fff;
            box-shadow: 0 8px 18px rgba(42, 108, 232, 0.25);
        }

        .btn-primary-custom:hover {
            color: #fff;
            background: linear-gradient(135deg, #3c7bf2, #1857d8);
            box-shadow: 0 12px 24px rgba(42, 108, 232, 0.32);
            transform: translateY(-3px);
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid rgba(42, 108, 232, 0.45);
            color: var(--brand-dark);
        }

        .btn-outline-custom:hover {
            background: rgba(42, 108, 232, 0.08);
            color: var(--brand-dark);
            border-color: var(--brand);
            transform: translateY(-3px);
        }

        .btn-light-custom {
            background: #fff;
            color: var(--brand-dark);
            box-shadow: 0 10px 20px rgba(12, 45, 100, 0.12);
        }

        .btn-light-custom:hover {
            color: var(--brand-dark);
            background: #f5f9ff;
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .btn-sm-custom {
            min-height: 38px;
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 10px;
        }

        /* ===== 主内容区 ===== */
        .main-shell {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
        }

        .main-content {
            padding: 0 48px;
        }

        .category-banner {
            position: relative;
            margin: 34px 0 24px;
            padding: 40px 44px;
            min-height: 280px;
            border-radius: 24px;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-color: #dbe7fa;
            isolation: isolate;
            display: flex;
            align-items: center;
        }

        .category-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(240, 247, 255, 0.96) 0%, rgba(240, 247, 255, 0.86) 46%, rgba(240, 247, 255, 0.42) 100%);
            z-index: -1;
        }

        .category-banner-content {
            max-width: 640px;
            padding: 10px 0;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(42, 108, 232, 0.08);
            border: 1px solid rgba(42, 108, 232, 0.16);
            color: var(--brand-dark);
            font-weight: 600;
            font-size: 13px;
            padding: 5px 14px;
            border-radius: 100px;
            margin-bottom: 18px;
        }

        .eyebrow .dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
        }

        .category-banner h1 {
            font-size: clamp(2.25rem, 4vw, 3.25rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-title);
            margin-bottom: 16px;
        }

        .category-banner p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            max-width: 560px;
        }

        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .crumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 18px;
        }

        .crumb a {
            color: var(--muted, var(--text-muted));
            font-weight: 500;
        }

        .crumb a:hover {
            color: var(--brand);
        }

        .crumb .current {
            color: var(--text-body);
            font-weight: 600;
        }

        /* ===== 通用 section ===== */
        .section-block {
            padding: 56px 0 36px;
        }

        .section-heading {
            max-width: 720px;
            margin-bottom: 32px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--brand);
            background: var(--brand-soft);
            padding: 5px 14px;
            border-radius: 100px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-heading h2 {
            font-size: clamp(1.5rem, 2.2vw, 2.3rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .section-heading p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* ===== 步骤流程 ===== */
        .guide-section {
            background: var(--bg-surface);
            border-radius: 22px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            padding: 44px;
            margin-top: 20px;
        }

        .guide-list {
            list-style: none;
            padding: 0;
            margin: 0;
            position: relative;
        }

        .guide-list::before {
            content: "";
            position: absolute;
            left: 29px;
            top: 60px;
            bottom: 60px;
            width: 2px;
            background: linear-gradient(180deg, var(--brand-soft), var(--line), transparent);
        }

        .guide-item {
            position: relative;
            display: flex;
            gap: 24px;
            padding: 22px 0 26px;
        }

        .guide-number {
            position: relative;
            z-index: 1;
            width: 60px;
            height: 60px;
            flex: 0 0 auto;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--brand), var(--brand-dark));
            color: #fff;
            font-weight: 800;
            font-size: 17px;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 20px rgba(42, 108, 232, 0.22);
        }

        .guide-content {
            padding-top: 4px;
        }

        .guide-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .guide-content p {
            max-width: 720px;
            margin-bottom: 10px;
            color: var(--text-body);
        }

        .guide-note {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--brand-soft);
            color: var(--brand-dark);
            font-size: 13px;
            border-radius: 10px;
            padding: 5px 12px;
            font-weight: 500;
        }

        .guide-note .note-icon {
            color: var(--accent);
        }

        /* ===== 快捷检索 pill ===== */
        .topics-panel {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            margin: 44px 0 12px;
        }

        .topics-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 14px;
        }

        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-link {
            display: inline-flex;
            min-height: 38px;
            align-items: center;
            padding: 7px 16px;
            border-radius: 10px;
            background: var(--bg-body);
            border: 1px solid var(--line);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition-base);
        }

        .tag-link:hover {
            border-color: var(--brand);
            background: var(--brand-soft);
            color: var(--brand-dark);
            transform: translateY(-2px);
        }

        .tag-link i {
            font-style: normal;
            margin-right: 6px;
            color: var(--brand);
        }

        /* ===== 使用场景 ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr;
            gap: 20px;
        }

        .scenario-left-card {
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 28px;
        }

        .scenario-left-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .scenario-left-card p {
            color: var(--text-body);
            margin-bottom: 16px;
        }

        .check-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .check-list li {
            display: flex;
            gap: 8px;
            align-items: flex-start;
            color: var(--text-body);
            font-size: 15px;
        }

        .check-list .check-box {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background: var(--brand-soft);
            color: var(--brand);
            border-radius: 50%;
            margin-top: 2px;
        }

        .scenario-card-stack {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .mini-card {
            flex: 1;
            background: var(--bg-surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

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

        .mini-card .mini-number {
            font-size: 13px;
            font-weight: 800;
            color: var(--accent);
            background: var(--accent-soft);
            border-radius: 8px;
            padding: 3px 10px;
            display: inline-block;
            margin-bottom: 12px;
        }

        .mini-card h4 {
            font-size: 17px;
            margin-bottom: 8px;
        }

        .mini-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
        }

        .visual-block {
            margin-top: 22px;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
        }

        .visual-block img {
            width: 100%;
            height: 210px;
            object-fit: cover;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-surface);
            border-radius: 22px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            padding: 44px;
            margin-top: 56px;
        }

        .faq-accordion {
            border-top: 1px solid var(--line);
        }

        .accordion-item {
            background: transparent;
            border: 0;
            border-bottom: 1px solid var(--line);
        }

        .accordion-button {
            position: relative;
            background: transparent;
            color: var(--text-title);
            font-weight: 700;
            font-size: 16px;
            line-height: 1.6;
            padding: 20px 40px 20px 16px;
            border: 0;
            box-shadow: none;
        }

        .accordion-button::after {
            background-image: none;
            content: "+";
            font-size: 22px;
            font-weight: 400;
            line-height: 1;
            color: var(--brand);
            transition: transform 0.25s ease;
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
        }

        .accordion-button:not(.collapsed) {
            background: var(--brand-soft);
            color: var(--brand-dark);
            box-shadow: none;
            border-left: 3px solid var(--brand);
        }

        .accordion-button:not(.collapsed)::after {
            content: "−";
            transform: translateY(-50%) rotate(0deg);
        }

        .accordion-button:hover,
        .accordion-button:focus {
            background: var(--brand-soft);
            color: var(--brand-dark);
            box-shadow: none;
        }

        .accordion-button:focus {
            outline: none;
        }

        .accordion-body {
            padding: 6px 24px 24px 16px;
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.9;
            border-left: 3px solid transparent;
        }

        .accordion-body p {
            margin-bottom: 8px;
        }

        /* ===== CTA ===== */
        .cta-panel {
            margin: 56px 0 0;
            padding: 52px 48px 48px;
            border-radius: 26px;
            background: linear-gradient(120deg, var(--brand), #1749b3);
            color: #fff;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 32px;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::after {
            content: "";
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            position: absolute;
            right: -70px;
            top: -60px;
            pointer-events: none;
        }

        .cta-info {
            flex: 1 1 360px;
            z-index: 1;
        }

        .cta-info h2 {
            color: #fff;
            font-size: clamp(1.6rem, 2.6vw, 2.4rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .cta-info p {
            color: rgba(255, 255, 255, 0.88);
            max-width: 560px;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            min-width: 260px;
            flex: 0 0 auto;
            z-index: 1;
            margin-left: auto;
        }

        .cta-buttons .btn-light-custom {
            color: var(--brand-dark);
            min-height: 50px;
        }

        .cta-buttons .btn-ghost-custom {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.28);
            min-height: 50px;
        }

        .cta-buttons .btn-ghost-custom:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== 移动端顶栏与抽屉 ===== */
        .mobile-topbar {
            display: none;
            height: 64px;
            align-items: center;
            justify-content: space-between;
            padding: 0 18px;
            background: var(--bg-surface);
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 0;
            width: 100%;
            z-index: 1050;
        }

        .btn-menu {
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand-soft);
            color: var(--brand-dark);
            border: 0;
            border-radius: 12px;
            transition: background var(--transition-base);
        }

        .btn-menu:hover {
            background: #d9e7fb;
        }

        .btn-menu svg {
            width: 20px;
            height: 20px;
        }

        .mobile-drawer {
            width: 280px;
            background: var(--bg-surface);
            border-right: 1px solid var(--line);
        }

        .mobile-drawer .offcanvas-header {
            padding: 20px 20px 10px;
        }

        .mobile-drawer .brand-text small {
            font-size: 10px;
        }

        .mobile-drawer .side-nav-label {
            margin: 8px 8px 8px;
        }

        .mobile-drawer .side-link {
            font-size: 15px;
        }

        .mobile-drawer .sidebar-download-card {
            margin: 20px 16px;
        }

        .drawer-close {
            width: 36px;
            height: 36px;
            border: 0;
            border-radius: 10px;
            background: var(--bg-soft);
            color: var(--text-body);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-left: auto;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            margin-top: 56px;
            border-top: 1px solid var(--line);
            background: rgba(234, 242, 253, 0.44);
        }

        .site-footer .content-wrap {
            padding: 36px 12px 28px;
            margin-left: 0;
            max-width: 1140px;
        }

        .footer-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--line);
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 17px;
            color: var(--text-title);
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px 18px;
        }

        .footer-links a {
            color: var(--text-body);
            font-size: 14px;
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            padding-top: 22px;
            color: var(--text-muted);
            font-size: 13px;
        }

        .footer-bottom .back-top {
            color: var(--brand-dark);
            font-weight: 600;
            font-size: 13px;
            padding: 6px 12px;
            border-radius: 10px;
            background: var(--brand-soft);
        }

        .footer-bottom .back-top:hover {
            background: #dce9fa;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .site-footer .content-wrap {
                max-width: 100%;
                padding-left: 4px;
                padding-right: 4px;
            }
        }

        @media (max-width: 991px) {
            .desktop-sidebar {
                display: none;
            }

            .mobile-topbar {
                display: flex;
            }

            .main-shell {
                margin-left: 0;
            }

            .main-content {
                padding: 0 28px;
            }

            .category-banner {
                margin-top: 24px;
                min-height: 250px;
                padding: 32px 28px;
            }

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

            .cta-panel {
                padding: 40px 32px;
            }
        }

        @media (max-width: 767px) {
            .main-content {
                padding: 0 16px;
            }

            .category-banner {
                margin: 16px 0 16px;
                padding: 26px 20px;
                border-radius: 20px;
            }

            .category-banner h1 {
                font-size: 2rem;
            }

            .category-banner p {
                font-size: 15px;
            }

            .crumb {
                margin-bottom: 4px;
            }

            .section-block {
                padding: 40px 0 20px;
            }

            .guide-section,
            .faq-section {
                padding: 28px 20px;
                border-radius: 18px;
            }

            .guide-list::before {
                left: 20px;
            }

            .guide-item {
                gap: 16px;
            }

            .guide-number {
                width: 46px;
                height: 46px;
                border-radius: 14px;
                font-size: 15px;
            }

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

            .topics-panel,
            .scenario-left-card,
            .mini-card {
                padding: 20px;
            }

            .visual-block img {
                height: 180px;
            }

            .faq-accordion .accordion-button {
                font-size: 15px;
                padding-left: 10px;
                padding-right: 36px;
            }

            .faq-accordion .accordion-body {
                padding-left: 12px;
            }

            .cta-panel {
                margin-top: 40px;
                padding: 36px 22px;
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-buttons {
                margin-left: 0;
                width: 100%;
            }

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

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

            .sidebar-download-card {
                margin-top: 16px;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 15px;
            }

            .category-banner {
                padding: 22px 18px;
            }

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

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

            .visual-block img {
                height: 150px;
            }

            .btn-menu {
                width: 42px;
                height: 42px;
            }
        }

/* 兼容首页已生成 nav 的最小补充，保证整体统一 */
        .header-spacer {
            display: none;
        }
        .brand-logo-lg {
            display: none;
        }

/* roulang page: category3 */
:root {
  --brand: #2A6CE8;
  --brand-dark: #1A4FC1;
  --brand-soft: #EAF2FD;
  --accent: #F6A822;
  --accent-soft: #FFF3D9;
  --bg-body: #F5F8FC;
  --bg-surface: #FFFFFF;
  --line: #E4EBF4;
  --text-title: #182742;
  --text-body: #4A5B72;
  --text-muted: #8495AA;
  --font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
  --shadow-sm: 0 4px 12px rgba(45, 85, 165, 0.06);
  --shadow-md: 0 12px 28px rgba(45, 85, 165, 0.10);
  --shadow-lg: 0 24px 48px rgba(45, 85, 165, 0.15);
  --radius-card: 18px;
  --radius-btn: 12px;
  --sidebar-width: 264px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-body);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.page-category-version {
  background: var(--bg-body);
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

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

button,
input {
  font-family: inherit;
}

ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

:focus-visible {
  outline: 3px solid rgba(42, 108, 232, 0.35);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 2000;
}

.app-sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--sidebar-width);
  display: flex;
  background: var(--bg-surface);
  border-right: 1px solid var(--line);
  z-index: 1040;
}

.sidebar-inner {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 28px 16px 20px;
  overflow-y: auto;
}

.brand-area {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 0 8px;
  margin-bottom: 26px;
  flex-shrink: 0;
}

.brand-logo {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  font-weight: 800;
  font-size: 1.14rem;
  color: var(--text-title);
  white-space: nowrap;
}

.brand-text small {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 4px;
  white-space: nowrap;
}

.nav-caption {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 2px;
  padding: 0 14px 10px;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.side-nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 46px;
  padding: 0 14px;
  border-radius: 14px;
  color: var(--text-body);
  font-size: 0.95rem;
  font-weight: 500;
  overflow: hidden;
}

.side-nav-link svg {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  stroke: var(--text-muted);
  transition: stroke 0.25s ease;
}

.side-nav-link:hover {
  background: #F0F5FB;
  color: var(--brand-dark);
}

.side-nav-link:hover svg {
  stroke: var(--brand);
}

.side-nav-link.active {
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-weight: 700;
}

.side-nav-link.active svg {
  stroke: var(--brand-dark);
}

.side-nav-link.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14%;
  bottom: 14%;
  width: 3px;
  border-radius: 3px;
  background: var(--brand);
}

.sidebar-download-card {
  margin-top: auto;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow-sm);
}

.side-download-head {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}

.side-download-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--brand-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  flex: 0 0 auto;
}

.side-download-icon svg {
  width: 19px;
  height: 19px;
}

.side-download-text strong {
  display: block;
  color: var(--text-title);
  font-size: 0.93rem;
  line-height: 1.3;
}

.side-download-text span {
  display: block;
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.4;
}

.sidebar-download-card .btn {
  width: 100%;
  min-height: 40px;
  padding: 0 14px;
  font-size: 0.9rem;
}

.mobile-topbar {
  position: sticky;
  top: 0;
  z-index: 1020;
  min-height: 64px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
}

.mobile-topbar .brand-area {
  margin-bottom: 0;
  padding: 0;
}

.mobile-topbar .brand-logo {
  width: 38px;
  height: 38px;
}

.mobile-topbar .brand-text {
  font-size: 1.02rem;
}

.mobile-topbar .brand-text small {
  font-size: 0.68rem;
}

.btn-menu {
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 12px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.25s ease, transform 0.25s ease;
}

.btn-menu svg {
  width: 22px;
  height: 22px;
}

.btn-menu:hover {
  background: #DCECFF;
}

.btn-menu:active {
  transform: scale(0.95);
}

.mobile-offcanvas {
  width: min(320px, 85vw) !important;
  background: #FFFFFF !important;
}

.mobile-offcanvas .offcanvas-body {
  padding: 0;
  overflow: hidden;
  height: 100%;
}

.mobile-offcanvas .sidebar-inner {
  height: 100%;
  padding-top: 12px;
}

.offcanvas-close-wrap {
  display: flex;
  justify-content: flex-end;
  padding: 0 12px 10px;
}

.btn-close-custom {
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 10px;
  background: #F1F6FC;
  color: var(--text-body);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  line-height: 1;
}

.btn-close-custom:hover {
  background: var(--brand-soft);
  color: var(--brand-dark);
}

.app-main {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-main > main {
  flex: 1 0 auto;
}

.content-wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 48px;
  padding-right: 48px;
}

.section-block {
  padding: 88px 0;
}

.section-head {
  max-width: 760px;
  margin-bottom: 42px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-kicker,
.eyebrow-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.section-kicker.accent,
.eyebrow-badge.accent {
  background: var(--accent-soft);
  color: #B27106;
}

.section-head h2 {
  margin: 16px 0 12px;
  color: var(--text-title);
  font-size: clamp(1.4rem, 2vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
}

.section-head p {
  margin: 0;
  color: var(--text-body);
  font-size: 1rem;
  line-height: 1.8;
}

.page-banner {
  position: relative;
  padding: 92px 0 76px;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-position: center;
  background-size: cover;
  border-bottom: 1px solid rgba(228, 235, 244, 0.6);
}

.page-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(255, 255, 255, 0.98) 15%, rgba(250, 252, 255, 0.92) 48%, rgba(238, 245, 255, 0.45) 100%);
  z-index: 1;
}

.banner-inner {
  position: relative;
  z-index: 2;
  max-width: 820px;
  padding: 20px 0 8px;
}

.banner-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.banner-crumb a {
  color: var(--text-muted);
}

.banner-crumb a:hover {
  color: var(--brand);
}

.page-banner .page-title {
  margin: 0 0 14px;
  color: var(--text-title);
  font-size: clamp(2.2rem, 3vw, 3.1rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.banner-description {
  max-width: 680px;
  margin: 0 0 30px;
  font-size: 1.08rem;
  color: var(--text-body);
  line-height: 1.9;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 26px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  border: 1px solid transparent;
  transition: all 0.25s ease;
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn-brand {
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  border-color: var(--brand);
  color: #FFFFFF;
  box-shadow: 0 8px 18px rgba(42, 108, 232, 0.24);
}

.btn-brand:hover {
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(42, 108, 232, 0.32);
  filter: brightness(1.03);
}

.btn-brand:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 4px 10px rgba(42, 108, 232, 0.2);
}

.btn-outline-brand {
  background: #FFFFFF;
  border-color: #C5D5EE;
  color: var(--brand-dark);
}

.btn-outline-brand:hover {
  border-color: var(--brand);
  color: var(--brand-dark);
  background: var(--brand-soft);
  transform: translateY(-2px);
}

.btn-outline-light {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.55);
  color: #FFFFFF;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.18);
  color: #FFFFFF;
  border-color: #FFFFFF;
  transform: translateY(-2px);
}

.block-timeline {
  background: transparent;
}

.timeline-wrap {
  position: relative;
  padding-left: 22px;
}

.timeline-wrap::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 16px;
  bottom: 20px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand-soft), #CFE0F6);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 66px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: 0;
  top: 6px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid #D2E2F7;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  box-shadow: var(--shadow-sm);
  z-index: 2;
}

.timeline-marker svg {
  width: 22px;
  height: 22px;
}

.version-card {
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 28px 30px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.version-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin-bottom: 10px;
}

.version-name {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--brand-dark);
  letter-spacing: -0.3px;
}

.version-channel {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: #F8FAFD;
  border: 1px solid var(--line);
  padding: 3px 10px;
  border-radius: 999px;
}

.version-date {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.84rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
}

.tag-new {
  background: #E6F7EE;
  color: #18804F;
}

.tag-fix {
  background: var(--accent-soft);
  color: #A96C00;
}

.tag-perf {
  background: #EEF0FB;
  color: #5953B8;
}

.tag-ui {
  background: #F1F6FC;
  color: #45638A;
}

.version-card h3 {
  margin: 6px 0 8px;
  color: var(--text-title);
  font-size: 1.18rem;
  font-weight: 700;
}

.version-card > p {
  margin: 0 0 14px;
  color: var(--text-body);
  font-size: 0.96rem;
  line-height: 1.8;
}

.version-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 22px;
  border-top: 1px dashed #E4EBF4;
  padding-top: 14px;
}

.version-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.93rem;
  color: var(--text-body);
  line-height: 1.7;
}

.version-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
}

.block-features {
  background: var(--bg-surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.feature-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: #D4E3F7;
}

.feature-icon {
  flex: 0 0 auto;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: var(--brand-soft);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.feature-card h3 {
  margin: 0 0 6px;
  color: var(--text-title);
  font-size: 1.06rem;
  font-weight: 700;
}

.feature-card p {
  margin: 0;
  color: var(--text-body);
  font-size: 0.93rem;
  line-height: 1.75;
}

.block-preview {
  background: var(--bg-body);
}

.preview-grid {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 22px;
}

.media-frame {
  position: relative;
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #E6EDF6;
  border: 1px solid var(--line);
  min-height: 300px;
  box-shadow: var(--shadow-md);
}

.media-frame img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
  background-color: #E6EDF6;
}

.media-frame figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 40px 22px 14px;
  color: #FFFFFF;
  font-size: 0.86rem;
  background: linear-gradient(180deg, rgba(13, 31, 58, 0), rgba(13, 31, 58, 0.72));
}

.block-process {
  background: var(--bg-surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.step-card {
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all 0.25s ease;
}

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

.step-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--brand-soft));
  border-radius: 0 0 4px 4px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-weight: 800;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.step-card h3 {
  margin: 0 0 8px;
  color: var(--text-title);
  font-size: 1rem;
  font-weight: 700;
}

.step-card p {
  margin: 0;
  color: var(--text-body);
  font-size: 0.92rem;
  line-height: 1.75;
}

.block-faq {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--line);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-list .accordion-item {
  background: transparent;
  border: 0;
  border-bottom: 1px solid #E4EBF4;
}

.faq-list .accordion-item:last-child {
  border-bottom: 0;
}

.faq-list .accordion-button {
  position: relative;
  padding: 22px 4px 22px 18px;
  background: transparent;
  color: var(--text-title);
  font-weight: 600;
  font-size: 1rem;
  border-radius: 0;
  box-shadow: none;
  font-family: var(--font-family);
}

.faq-list .accordion-button::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 3px;
  border-radius: 3px;
  background: transparent;
}

.faq-list .accordion-button:not(.collapsed)::before {
  background: var(--brand);
}

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

.faq-list .accordion-button:hover {
  color: var(--brand);
  background: rgba(245, 249, 255, 0.5);
}

.faq-list .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(42, 108, 232, 0.12);
  border-radius: 8px;
}

.faq-list .accordion-button::after {
  content: "＋";
  width: 20px;
  height: 20px;
  background-image: none;
  color: var(--brand);
  font-size: 1.4rem;
  font-weight: 300;
  margin-left: auto;
  transform: none;
  transition: transform 0.25s ease;
}

.faq-list .accordion-button:not(.collapsed)::after {
  content: "－";
  transform: none;
  color: var(--brand-dark);
}

.faq-list .accordion-body {
  padding: 0 18px 24px;
  color: var(--text-body);
  font-size: 0.95rem;
  line-height: 1.8;
}

.block-cta {
  background: var(--bg-body);
}

.cta-panel {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  padding: 66px 64px;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-position: center;
  background-size: cover;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-lg);
}

.cta-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(24, 63, 137, 0.96), rgba(42, 108, 232, 0.82), rgba(42, 108, 232, 0.54));
  z-index: 1;
}

.cta-copy,
.cta-actions {
  position: relative;
  z-index: 2;
}

.cta-copy {
  color: #FFFFFF;
  max-width: 620px;
}

.cta-copy .section-kicker {
  background: rgba(255, 255, 255, 0.16);
  color: #FFFFFF;
}

.cta-copy h2 {
  margin: 16px 0 12px;
  color: #FFFFFF;
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
  font-weight: 800;
  line-height: 1.3;
}

.cta-copy p {
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
  line-height: 1.8;
}

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

.cta-panel .btn-brand-light {
  background: #FFFFFF;
  color: var(--brand-dark);
  border-color: #FFFFFF;
}

.cta-panel .btn-brand-light:hover {
  background: #EAF2FD;
  border-color: #FFFFFF;
  transform: translateY(-2px);
  color: var(--brand-dark);
}

.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--line);
  padding: 48px 0 24px;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 24px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-title);
}

.footer-brand:hover {
  color: var(--brand-dark);
}

.footer-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 10px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 8px;
  color: var(--text-body);
  font-size: 0.9rem;
  font-weight: 500;
}

.footer-links a:hover {
  background: var(--brand-soft);
  color: var(--brand-dark);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.back-top {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  color: var(--text-muted);
}

.back-top:hover {
  color: var(--brand);
}

@media (min-width: 992px) {
  .mobile-topbar {
    display: none;
  }
}

@media (max-width: 991.98px) {
  .app-sidebar {
    display: none;
  }

  .app-main {
    margin-left: 0;
  }

  .content-wrap {
    padding-left: 32px;
    padding-right: 32px;
  }

  .section-block {
    padding: 64px 0;
  }

  .page-banner {
    padding: 64px 0 52px;
  }

  .steps-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

  .media-frame,
  .media-frame img {
    min-height: 280px;
  }
}

@media (max-width: 767.98px) {
  .content-wrap {
    padding-left: 16px;
    padding-right: 16px;
  }

  .section-block {
    padding: 44px 0;
  }

  .section-head {
    margin-bottom: 28px;
  }

  .section-head h2 {
    margin-top: 12px;
  }

  .page-banner {
    padding: 40px 0 36px;
  }

  .page-banner .page-title {
    font-size: 2rem;
  }

  .banner-description {
    font-size: 0.98rem;
    line-height: 1.8;
  }

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

  .version-card {
    padding: 22px 20px;
  }

  .version-head {
    gap: 8px;
  }

  .version-date {
    margin-left: 0;
    width: 100%;
  }

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

  .timeline-wrap {
    padding-left: 16px;
  }

  .timeline-wrap::before {
    left: 17px;
  }

  .timeline-item {
    padding-left: 56px;
  }

  .timeline-marker {
    width: 42px;
    height: 42px;
  }

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

  .feature-card {
    padding: 20px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cta-panel {
    padding: 40px 24px;
  }

  .cta-actions {
    width: 100%;
  }

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

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 575.98px) {
  .mobile-topbar {
    padding: 10px 12px;
  }

  .brand-text small {
    display: none;
  }

  .banner-inner {
    padding-top: 4px;
  }

  .page-banner {
    background-position: 70% center;
  }

  .page-banner .page-title {
    font-size: 1.74rem;
  }

  .banner-crumb {
    font-size: 0.78rem;
  }

  .media-frame,
  .media-frame img {
    min-height: 220px;
  }

  .timeline-item {
    padding-left: 48px;
  }

  .timeline-marker {
    width: 38px;
    height: 38px;
  }
}

/* roulang page: category4 */
:root{
  --brand:#2A6CE8;
  --brand-dark:#1A4FC1;
  --brand-soft:#EAF2FD;
  --accent:#F6A822;
  --accent-soft:#FFF3D9;
  --bg-body:#F5F8FC;
  --bg-surface:#FFFFFF;
  --line:#E4EBF4;
  --text-title:#182742;
  --text-body:#4A5B72;
  --text-muted:#8495AA;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-sm:0 4px 12px rgba(45,85,165,.06);
  --shadow-md:0 12px 28px rgba(45,85,165,.10);
  --shadow-lg:0 24px 48px rgba(45,85,165,.15);
  --ease:.25s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  background:var(--bg-body);
  color:var(--text-body);
  -webkit-font-smoothing:antialiased;
  font-size:1rem;
  line-height:1.8;
}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dark)}
img{max-width:100%;display:block;height:auto}
button,input,textarea{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p{margin:0}
.visually-hidden-focused{
  position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden;
}
.skip-link{
  position:fixed;left:-999px;top:16px;z-index:2000;background:var(--brand);color:#fff;
  padding:10px 20px;border-radius:12px;
}
.skip-link:focus{left:16px}

.app-sidebar{
  width:264px;
  background:var(--bg-surface);
  border-right:1px solid var(--line);
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:1045;
  display:flex;
  flex-direction:column;
  padding:28px 18px 22px;
}
.sidebar-brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 10px;
  min-height:44px;
}
.sidebar-brand .brand-text{
  font-weight:800;
  color:var(--text-title);
  font-size:1.12rem;
  line-height:1.3;
  letter-spacing:.2px;
}
.sidebar-brand .brand-text small{
  display:block;
  font-size:.75rem;
  color:var(--text-muted);
  font-weight:400;
  letter-spacing:.1px;
}
.sidebar-brand svg, .footer-brand svg{flex:0 0 auto}

.side-nav{
  margin-top:28px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.nav-group-title{
  display:block;
  font-size:.8125rem;
  color:var(--text-muted);
  letter-spacing:2px;
  padding:0 12px 10px;
  font-weight:500;
}
.side-nav .nav-link{
  display:flex;
  align-items:center;
  gap:10px;
  height:45px;
  margin:2px 0;
  padding:0 14px;
  border-radius:13px;
  font-weight:600;
  color:var(--text-body);
  border-left:3px solid transparent;
  transition:var(--ease);
  font-size:.95rem;
}
.side-nav .nav-link:hover{
  background:#F0F5FB;
  color:var(--brand-dark);
}
.side-nav .nav-link.active{
  background:var(--brand-soft);
  color:var(--brand);
  border-left-color:var(--brand);
}
.side-nav .nav-link .nav-mini-num{
  margin-left:auto;
  font-size:.75rem;
  color:var(--text-muted);
  background:var(--bg-body);
  border-radius:20px;
  min-width:24px;
  height:20px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 5px;
}
.sidebar-download-card{
  background:var(--bg-surface);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow-sm);
  padding:16px;
}
.sidebar-download-card .sd-title{
  font-size:.875rem;
  font-weight:700;
  color:var(--text-title);
}
.sidebar-download-card .sd-desc{
  font-size:.75rem;
  color:var(--text-muted);
  margin:6px 0 12px;
  line-height:1.5;
}
.btn-side-mini{
  width:100%;
  height:40px;
  background:var(--brand-soft);
  color:var(--brand-dark);
  border:0;
  border-radius:10px;
  font-weight:700;
  font-size:.875rem;
  transition:var(--ease);
}
.btn-side-mini:hover{background:var(--brand);color:#fff}
.btn-side-mini:active{transform:translateY(1px)}

.app-main{
  margin-left:264px;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

.mobile-topbar{
  display:none;
}

.category-main{
  flex:1;
  width:100%;
}
.content-wrap{
  max-width:1280px;
  margin:0 auto;
  padding-left:48px;
  padding-right:48px;
}
.section-gap{
  padding-top:80px;
  padding-bottom:80px;
}

.breadcrumb-lite{
  display:flex;
  align-items:center;
  gap:6px;
  font-size:.8125rem;
  color:var(--text-muted);
  margin-bottom:24px;
  padding:0;
  background:transparent;
}
.breadcrumb-lite a{color:var(--text-muted)}
.breadcrumb-lite a:hover{color:var(--brand)}
.breadcrumb-lite .sep{opacity:.6}

.faq-hero{
  background:linear-gradient(115deg,rgba(234,242,253,.96) 10%,rgba(255,255,255,.82) 60%,#fff 100%),url('/assets/images/backpic/back-1.png') center/cover;
  border-bottom:1px solid var(--line);
  padding:86px 0 88px;
  position:relative;
  overflow:hidden;
}
.hero-main-content h1{
  font-size:clamp(2.125rem,3.5vw,3.1rem);
  line-height:1.2;
  font-weight:800;
  color:var(--text-title);
  letter-spacing:-.3px;
  margin:14px 0 18px;
}
.faq-hero-deck{
  max-width:620px;
  font-size:1.0625rem;
  color:var(--text-body);
  margin-bottom:26px;
}
.hero-tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.tag-chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--bg-surface);
  border:1px solid var(--line);
  color:var(--text-title);
  border-radius:999px;
  height:36px;
  padding:0 14px;
  font-size:.8125rem;
  font-weight:600;
  box-shadow:var(--shadow-sm);
}
.tag-chip::before{
  content:'';
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--brand);
  display:block;
}
.hero-media-wrap{
  position:relative;
  max-width:440px;
  margin-left:auto;
}
.hero-media-card{
  background:var(--bg-surface);
  border:1px solid #fff;
  border-radius:24px;
  padding:10px;
  box-shadow:var(--shadow-lg);
  transform:rotate(1deg);
}
.hero-media-card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:17px;
}
.hero-media-tag{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:12px;
  padding:0 4px 4px;
}
.hero-media-tag span{
  font-size:.8125rem;
  color:var(--text-muted);
}
.hero-media-tag b{
  font-size:.8125rem;
  color:var(--brand-dark);
  font-weight:700;
  background:var(--brand-soft);
  border-radius:20px;
  padding:4px 12px;
}
.hero-float-pill{
  position:absolute;
  right:-12px;
  top:-16px;
  background:var(--accent);
  color:#243A5A;
  border-radius:999px;
  font-weight:700;
  font-size:.8125rem;
  box-shadow:var(--shadow-md);
  padding:7px 16px;
  transform:rotate(2deg);
}

.faq-quick-block{
  padding-top:76px;
  padding-bottom:64px;
}
.section-label{
  color:var(--brand);
  font-size:.8125rem;
  letter-spacing:2px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
}
.section-label::before{
  content:'';
  width:18px;
  height:2px;
  background:var(--brand);
  border-radius:2px;
  display:inline-block;
}
.block-title{
  font-size:clamp(1.45rem,2vw,2rem);
  font-weight:800;
  color:var(--text-title);
  line-height:1.35;
  margin-bottom:12px;
}
.block-lead{
  max-width:680px;
  color:var(--text-body);
  font-size:1rem;
  margin-bottom:34px;
}
.quick-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.quick-card{
  background:var(--bg-surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-sm);
  padding:24px 22px;
  text-align:left;
  transition:all var(--ease);
  min-height:176px;
  display:flex;
  flex-direction:column;
  width:100%;
}
.quick-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  border-color:#C9D9F2;
}
.quick-card .qc-icon{
  width:40px;
  height:40px;
  background:var(--brand-soft);
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:16px;
  color:var(--brand);
  font-size:1.35rem;
  font-weight:700;
}
.quick-card h3{
  font-size:1.0625rem;
  color:var(--text-title);
  font-weight:700;
  margin-bottom:6px;
  line-height:1.45;
}
.quick-card p{
  font-size:.8125rem;
  color:var(--text-muted);
  line-height:1.7;
}
.quick-card .qc-target{
  margin-top:auto;
  color:var(--brand);
  font-size:.875rem;
  font-weight:600;
}
.quick-card:focus-visible,.btn:focus-visible,.accordion-button:focus-visible{
  outline:3px solid rgba(42,108,232,.3);
  outline-offset:2px;
}

.faq-list-section{
  background:var(--bg-surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:80px 0;
}
.faq-accordion-wrap{
  max-width:940px;
}
.accordion-item.faq-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
}
.accordion-item.faq-item:first-of-type{
  border-top:1px solid var(--line);
}
.faq-item .accordion-button{
  background:transparent;
  box-shadow:none;
  border-radius:0;
  min-height:68px;
  color:var(--text-title);
  font-size:1rem;
  font-weight:700;
  padding:20px 40px 20px 28px;
  position:relative;
  align-items:center;
  gap:12px;
  line-height:1.6;
}
.accordion-item.faq-item .accordion-button::before{
  content:'';
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:3px;
  height:20px;
  background:transparent;
  border-radius:3px;
}
.accordion-item.faq-item .accordion-button:not(.collapsed)::before{
  background:var(--brand);
}
.faq-item .accordion-button:not(.collapsed){
  background:transparent;
  color:var(--brand);
  box-shadow:none;
}
.faq-item .accordion-button::after{
  display:none;
}
.faq-q-icon{
  width:28px;
  height:28px;
  flex:0 0 28px;
  border-radius:9px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:.75rem;
  font-weight:800;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.faq-toggle-icon{
  position:absolute;
  right:8px;
  top:50%;
  width:28px;
  height:28px;
  transform:translateY(-50%);
  border-radius:8px;
  background:#F0F5FB;
  color:var(--text-body);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:var(--ease);
  font-weight:400;
}
.faq-item .accordion-button .faq-toggle-icon::before{
  content:'+';
  font-size:1.1rem;
  transition:var(--ease);
}
.faq-item .accordion-button:not(.collapsed) .faq-toggle-icon::before{
  content:'−';
  color:var(--brand);
}
.faq-item .accordion-collapse{
  border:0;
}
.faq-item .accordion-body{
  padding:0 36px 25px 40px;
  color:var(--text-body);
  font-size:1rem;
}
.faq-item .accordion-body p{
  max-width:720px;
}

.result-links-section{
  padding:80px 0;
}
.link-cards{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
}
.half-link-card{
  background:var(--bg-surface);
  border:1px solid var(--line);
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:all var(--ease);
  display:flex;
}
.half-link-card:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-3px);
}
.half-link-card .link-card-img{
  width:130px;
  min-height:170px;
  object-fit:cover;
  flex-shrink:0;
}
.half-link-card .link-card-body{
  padding:24px 24px 22px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.half-link-card .lc-kicker{
  font-size:.75rem;
  font-weight:700;
  color:var(--accent);
  letter-spacing:.6px;
  margin-bottom:8px;
}
.half-link-card h3{
  font-size:1.125rem;
  font-weight:700;
  color:var(--text-title);
  margin-bottom:8px;
}
.half-link-card p{
  font-size:.875rem;
  color:var(--text-muted);
  line-height:1.75;
  margin-bottom:15px;
}
.half-link-card .lc-btn{
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-weight:600;
  font-size:.875rem;
}
.half-link-card .lc-btn:hover{color:var(--brand-dark)}

.download-cta{
  padding:30px 0 84px;
}
.download-panel{
  background:linear-gradient(125deg,rgba(234,242,253,.92) 8%,rgba(255,255,255,.88) 60%),url('/assets/images/backpic/back-2.webp') center/cover;
  border-radius:28px;
  border:1px solid var(--line);
  padding:58px 56px;
  position:relative;
  overflow:hidden;
}
.download-panel .dp-kicker{
  color:var(--brand);
  font-weight:700;
  letter-spacing:1px;
  font-size:.8125rem;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.download-panel .dp-kicker::before{
  content:'';
  width:20px;
  height:2px;
  background:var(--brand);
  display:inline-block;
  border-radius:2px;
}
.download-panel h2{
  font-size:clamp(1.5rem,2vw,2rem);
  font-weight:800;
  color:var(--text-title);
  max-width:660px;
  margin:16px 0 14px;
  line-height:1.4;
}
.download-panel p{
  max-width:640px;
  margin-bottom:28px;
}
.btn-group-lite{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.btn-custom{
  height:54px;
  padding:0 24px;
  border-radius:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  font-size:1rem;
  font-weight:700;
  border:none;
  transition:all var(--ease);
  min-height:54px;
}
.btn-custom.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;
  box-shadow:0 8px 18px rgba(42,108,232,.25);
}
.btn-custom.btn-primary:hover{
  background:linear-gradient(135deg,#3f7dee,#1f55c9);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 14px 26px rgba(42,108,232,.28);
}
.btn-custom.btn-secondary{
  background:var(--bg-surface);
  color:var(--text-title);
  border:1px solid var(--line);
}
.btn-custom.btn-secondary:hover{
  border-color:var(--brand);
  color:var(--brand);
  background:var(--bg-surface);
  transform:translateY(-2px);
  box-shadow:var(--shadow-sm);
}
.btn-custom:active{
  transform:translateY(1px);
  box-shadow:none;
}

.site-footer{
  background:#EEF4FB;
  border-top:1px solid var(--line);
  padding:44px 0 30px;
}
.footer-content{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  margin-bottom:22px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  color:var(--text-title);
  font-size:1.05rem;
  min-height:40px;
}
.footer-links{
  display:flex;
  flex-wrap:wrap;
  gap:26px;
}
.footer-links a{
  color:var(--text-body);
  font-size:.875rem;
  font-weight:500;
}
.footer-links a:hover{
  color:var(--brand);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  padding-top:18px;
  border-top:1px solid #DCE6F2;
  font-size:.8125rem;
  color:var(--text-muted);
}
.back-top{
  margin-left:auto;
  color:var(--text-body);
  padding:4px 0;
}
.back-top:hover{color:var(--brand)}

.mobile-sidebar-panel{
  background:var(--bg-surface);
  height:100%;
  width:300px;
  border-right:1px solid var(--line);
}
.mobile-sidebar-panel .offcanvas-header{
  padding:20px 16px 8px;
  align-items:flex-start;
}
.mobile-sidebar-panel .offcanvas-body{
  padding:10px 14px 24px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.mobile-brand-lite{
  display:flex;
  align-items:center;
  gap:10px;
}
.mobile-brand-lite span{
  font-weight:800;
  color:var(--text-title);
}

@media (max-width:1199px){
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .content-wrap{padding-left:34px;padding-right:34px}
}

@media (min-width:992px){
  .mobile-topbar{display:none}
}

@media (max-width:991.98px){
  .app-sidebar{display:none}
  .app-main{margin-left:0}
  .mobile-topbar{
    height:64px;
    position:sticky;
    top:0;
    z-index:1040;
    background:var(--bg-surface);
    border-bottom:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:0 16px;
  }
  .mobile-topbar .brand-area{
    display:flex;
    align-items:center;
    gap:10px;
    min-height:44px;
  }
  .mobile-topbar .brand-area .brand-text{
    font-weight:800;
    color:var(--text-title);
    font-size:1rem;
    line-height:1.2;
  }
  .mobile-topbar .brand-area .brand-text small{
    display:block;
    font-size:.6875rem;
    color:var(--text-muted);
    font-weight:400;
  }
  .btn-menu{
    width:44px;
    height:44px;
    border-radius:12px;
    border:1px solid var(--line);
    background:var(--bg-surface);
    color:var(--text-title);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    transition:var(--ease);
  }
  .btn-menu:hover{background:var(--brand-soft);color:var(--brand)}
  .btn-menu svg{width:22px;height:22px}
  .content-wrap{padding-left:24px;padding-right:24px}
  .faq-hero{padding:56px 0 68px}
  .hero-media-wrap{margin:28px auto 0;max-width:460px}
  .section-gap{padding-top:60px;padding-bottom:60px}
  .footer-links{gap:16px}
  .back-top{margin-left:0}
}

@media (max-width:767.98px){
  body{line-height:1.75}
  .content-wrap{padding-left:16px;padding-right:16px}
  .faq-hero{
    padding-top:44px;
    padding-bottom:50px;
  }
  .hero-main-content h1{
    font-size:2rem;
  }
  .faq-hero-deck{font-size:.9375rem}
  .hero-media-wrap{
    margin-left:0;
    max-width:100%;
  }
  .hero-float-pill{
    right:2px;
    top:-10px;
    font-size:.75rem;
    padding:6px 13px;
  }
  .quick-grid{grid-template-columns:1fr;gap:12px}
  .quick-card{
    min-height:0;
    padding:20px;
  }
  .quick-card .qc-icon{width:36px;height:36px;margin-bottom:12px}
  .faq-list-section,.result-links-section,.section-gap{padding-top:52px;padding-bottom:52px}
  .block-lead{margin-bottom:24px}
  .link-cards{grid-template-columns:1fr}
  .half-link-card .link-card-img{
    width:100%;
    height:160px;
    min-height:0;
  }
  .half-link-card{
    flex-direction:column;
  }
  .download-panel{
    padding:36px 20px;
    border-radius:20px;
  }
  .download-panel h2{
    font-size:1.35rem;
    line-height:1.45;
  }
  .download-panel p{font-size:.9375rem}
  .btn-custom{
    width:100%;
    height:52px;
  }
  .faq-item .accordion-button{
    font-size:.9375rem;
    padding:18px 36px 18px 18px;
    min-height:64px;
  }
  .faq-item .accordion-body{
    padding:0 18px 22px 28px;
    font-size:.9375rem;
  }
  .footer-content{
    align-items:flex-start;
    flex-direction:column;
  }
  .footer-bottom{
    align-items:flex-start;
    flex-direction:column;
  }
  .footer-links{
    width:100%;
    gap:10px 16px;
  }
  .footer-links li{width:calc(50% - 10px)}
  .btn-group-lite{width:100%;flex-direction:column}
}
@media (max-width:520px){
  .quick-grid{grid-template-columns:1fr}
  .mobile-topbar .brand-text small{display:none}
  .breadcrumb-lite{margin-bottom:18px}
}